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Conveyor information that you should know

Conveyor information that you should know

Analysis of Structure and Control Mode of Two Stacking Roller Conveyors

As an integrated conveying device that integrates the functions of equal spacing and temporary storage, the drum conveyor is widely used in automated logistics systems. With the continuous advancement and innovation of modern logistics technology, the automation and flexibility of the logistics conveyor line are getting higher and higher. While the application of the roller conveyor is more common in the conveyor system, the user also puts higher requirements on the performance, cost, maintenance and service life of the equipment. This paper analyzes and explains the structure and control mode of two common stacking roller conveyors, and then explains the advantages and disadvantages of the two stacking roller conveyors.1. Main structure The equipment is mainly composed of frame, legs, transmission device, swinging body, air control device, photoelectric detecting device and electronic control device. The mechanical brake is a swinging body and the whole structure(1) Rack: The frame is assembled from special aluminum alloy profiles and strut assemblies, and is the main part of the load bearing materials and other components. (2) Outriggers: The legs are assembled from special profiles and adjustable feet. The function is to support the frame and ensure the level of the conveying surface. (3) Transmission device: The transmission device is composed of a reducer, a transmission belt, a pulley, a roller, etc. Its main function is to drive the transmission belt through the reducer, and the transmission belt friction roller rotates to realize the horizontal conveyance of the material thereon.(4) Swing body: The oscillating body is composed of a connecting rod, a pulley, a swinging rod, a brake block, etc., and its function is to lift the belt when the pulley is lifted, and the brake block is disengaged from the roller, and the material is in a normal conveying state; When the wheel releases the belt and the brake block contacts the roller, when the roller is braked in the area, the material comes to the station and is immediately stopped.(5) Air control device: The air control device is mainly composed of a solenoid valve, a cylinder and various pneumatic components. The external control signal or the detection signal of the dedicated photoelectric sensor is transmitted to the solenoid valve, and the solenoid valve is reversed to make the cylinder move, thereby driving the swinging body to obtain power or disengage power between the belt and the roller assembly to realize the material. Pneumatic schematic diagram of conveying and stopping, accumulating function(6) Photoelectric detection device: The photoelectric detection device is divided into a line-controlled photoelectric detection device and a dedicated photoelectric detection device. The wire-controlled photoelectric detecting device is mainly composed of a photoelectric switch, a connecting plug and a photoelectric switch bracket. Its function is to detect the position of the material and feed back the signal to the electronic control system to achieve the control requirements required by the system. The dedicated photoelectric detecting device for accumulating is composed of a dedicated photoelectric sensor, a cable branching device and a connecting plug. A dedicated photoelectric sensor integrates a photoelectric sensor and corresponding logic components. The sensor is equipped with an input signal filter to eliminate interference from surrounding components or surrounding objects. When n dedicated photoelectric sensors are connected in series, the logic function integrated in each dedicated photoelectric sensor can ensure that the transported materials can be transported or stored in a single collision-free sequence.(7) Electronic control device: The electronic control device is composed of junction box, operation box and other electrical components, mainly to realize the electrical connection of the conveyor, so that it can operate normally.

How to solve the chain chain failure of the chain conveyor?

    With the rapid development of industrial production, the chain conveyor has been widely used. The chain conveyor has the characteristics of simple structure, convenient maintenance and long service life. It has been recognized by customers in practical production applications. However, the failure of any conveying equipment is inevitable, so how to solve the conveyor chain failure of the chain conveyor, let us take a look at it.    When transporting materials, the chain conveyor first sends out the operation signal, first jogs twice and then officially starts normally. After the chain conveyor runs for half a week, it stops, checks the scraper chain that has been turned over to the chute, and simultaneously detects The degree of tightness of the traction chain, whether it is beating, scraping, deviation, drifting chain, etc., no problem after no-load operation, and then load test operation.    When the chain conveyor is in operation, it is necessary to pay attention to the operation of the motor of the head of the conveying equipment. If the temperature of the motor rises and the noise increases, the inspection should be carried out carefully, the operation center should be reported, and the lowering funnel should be closed. Stop the inspection. When the chain conveyor is in operation, it should also pay attention to the lubrication condition of the head star wheel at all times. If the bearing lacks oil, it should be refueled immediately with the manual oil pump.    During the use of the chain conveyor, the operation of the chain belt should be paid attention to at any time. If the chain rail is adjusted in time, when the machine speed is slowed down, the funnel should be adjusted to prevent the material from being pressed. When the chain conveyor is running, attention should be paid to the unloading of the head funnel. If the nylon conveyor belt is found to block the material, the power switch should be cut off immediately, and the operation should be stopped to prevent the chain conveyor head funnel from blocking the chain. To check if the chain is too long, if it is too long, adjust the tail tensioning device. If the blade has a blade at the end or the chain wheel and the hopper are not flexible, the head and tail blade need to be removed; It is necessary to add thin lubricating oil to the chain conveyor chain wheel to make the chain plate wheel rotate; the third is to replace and process the inactive hopper to avoid the chain chain failure during the operation of the chain plate conveyor.    In addition, to ensure the normal operation of the chain conveyor, it is necessary to regularly check the equipment and equipment maintenance. After the chain conveyor is inspected, it must be strictly checked and accepted according to the acceptance criteria to ensure that the chain conveyor can be put into production in time after inspection. There is no failure in production.    Above, we understand the solutions and preventive measures for the chain conveyor chain failure, and are ready to ensure the smooth production of the enterprise.

How to determine the conveyor chain is scrapped?

Mechanical equipment plays an important role in the work, and the conveyor chain is one of the most important parts in the equipment. The plate chain is also a type of chain and also plays an important role. If the plate chain takes too long, it will cause such problems. Then how to judge the scrapping of the transmission line chain?The general rule of the plate chain is mainly judged from the following aspects: First, the operator should be clear that the wear value allowed by the plate chain is limited. Generally speaking, it cannot be higher than the diameter of the ring chain bar. Tenth. The second point is to see the degree of distortion of the main ring of the main chain of the plate chain. If it is greater than 10 degrees, it will be scrapped. Of course, this should start from the uncurved plane above the main ring. If the chain of the plate chain is used for a long time, cracks, bends, etc. will occur. If it cannot be removed after being excluded, it can no longer be used, and it is counted as scrap.Once there is a problem with the plate chain, it will cause a lot of trouble for production. Then we must do daily maintenance and maintenance in our lives, and strive to reduce equipment damage. Jin Hengli usually does this. First of all, when installing the sprocket on the shaft, make sure that there is no swing and inclination. When the same drive assembly is not used, the rotary shaft should be in the same horizontal plane. If there is deviation, it will be Let the professional technicians carry out the repairs.The tightness of the plate chain should be appropriate. It should not be too tight or too loose. If the chain is too tight, the power of the device will increase and the consumption will be excessive. If it is too loose, the device will easily jump or even be unchained. Chains that have been used for a long time should not be mixed with new ones to avoid impact when used and to break the chain.

What are the anti-static methods for safe use of metal mesh belt conveyors?

    In the metal mesh belt conveyor grounding electrostatic hazard prevention method, grounding is an effective and economical method. During the process, static electricity is generated by friction, induction, or conduction. If the charge accumulates on a metal device, a conductive product, or a person's body that is insulated from the ground, the accumulated charge will release the energy in one discharge. Such electrostatic discharges are the main cause of electrostatic hazards. The metal mesh belt conveyor control method is to ground all the objects and maintain a low grounding resistance, and the electric charge accumulated on the metal equipment, the conductive products or the human body is quickly dissipated to the earth to avoid metal mesh belt transportation. Machine electrostatic hazard accident.    Precautions for the safe use of metal mesh belt conveyors:    1. The metal mesh belt conveyor equipment should be started at no load. After the operation is normal, it can be loaded, and it is forbidden to start after loading.    2. After the metal mesh belt conveyor is turned on, it will be idle for 3~5min. Check whether the parts are normal. The net has no slack and slippage. If there is any adjustment, the M20 tightening bolts at both ends of the driven roller can be adjusted and locked. ;    3. The metal mesh belt conveyor strictly controls the conveying capacity of the equipment, prohibiting the use of overload, and causing premature failure of components;    4. The metal mesh belt conveyor checks whether the driving roller, the driven roller, the bearing housing, and the transmission sprocket (gear) have abnormal noise. If the tightness of the chain is slack, adjust the adjusting bolt of the motor board to measure the tension and tighten it. Add grease to the bearing housing and the chain once a week, and tighten the sprocket stop screw to prevent the sprocket from moving;    5. The metal mesh belt conveyor regularly inspects the mesh belt bracket, the idler roller, the motor, the bearing seat and the connecting bolts of various parts, and finds that the looseness is timely tightened.

How can we extend the service life of flexible chain conveyors?

    Nowadays people are very efficient, and the same equipment, low efficiency will be eliminated. Flexible chain conveyors are now very popular and have a good market. However, many bosses also hope that the flexible chain conveyor has a longer use time, so that it will not lose money, which requires more maintenance, and no mistakes in operation. So how can we extend the service life of the flexible chain conveyor?    1. Check whether the joints of the flexible chain conveyor are normal, whether the screws are tight, and the looseness is found to be treated immediately.    2. Pay attention to the condition of the traction chain at all times during operation. When the tightness changes, adjust the tensioning device to return to normal.    3, pay attention to the use of lubricating oil between the various equipment, the reducer should be replaced with new lubricant after 7-14 days of use, and can be replaced after 3-6 months according to the actual situation.    4, the operation should be regular, the feeding is evenly guaranteed within the scope of control, it is forbidden to stop or start under full load conditions, and can not drive back.    We also need to cooperate with the daily operation and maintenance according to the instruction manual of the flexible chain conveyor, so as to extend the service life of the flexible chain conveyor.

How to avoid the dryness of the flexible chain conveyor during the turning process?

     When the flexible chain conveyor is turning, it is actually possible to select the ultra-high molecular weight polyethylene wear strip when selecting the wear strip. His wear resistance is several times that of the ordinary wear strip. This is because the flexible chain plate When turning, the two sides of the shaft are tightly attached to the wear strip, so that we can achieve our turning effect.     When conveying straight and turning, we can observe that in order to avoid dryness when turning the conveyor, the span between the chain plate and the chain plate will be very large with the guardrail. The flexible chain conveyor is more suitable for conveying. Light-loaded products such as beverages, toilet paper, etc., when the flexible chain conveyor is transported, if the difference between the width of the material and the standard width of the chain plate is large, the guiding member can be used to guide and restrain the material to achieve the transportation of materials of different sizes.

Drive mode design of chain conveyor

The chain conveyor is a conveying mechanism driven by an electric motor, and its conveying member is a chain plate, and the transmission mechanism transmits power to the conveying member.At present, there are two basic transmission forms of chain conveyors, one is sprocket chain transmission, and the other is direct coupling transmission of RV reducer.The chain conveyor has large load capacity, stable transportation and good material adaptability. It is widely used in heavy industry, automobile manufacturing, parts sorting and other fields.In general, there are some problems with the conveyor of the plastic chain plate, and if there is a problem, it needs to be dealt with immediately. Otherwise, the use of the device will become very unfavorable. Especially the plastic chain conveyor for the speed reducer, what are the requirements? Do a good explanation in the future.The neural network of the original plastic chain conveyor will vary depending on the way the neurons are linked. If the middle layer is composed of several layers, each layer of neurons can only receive the output of the previous layer of neurons. In the mutual connection network, any two neurons can be connected, and the input signal needs to be repeatedly transmitted and reciprocated between the neurons. If the change is several times, the plastic chain conveyor tends to be in a state of no disorder or enter the cycle. Shock and other conditions.The interface that provides the sensor device changes before it has failed. Therefore, the plastic chain conveyors of different working faces use reducers and different motor models. It is also necessary to fully determine the position of the reducer sensor device after the investigation. Due to the special environment in which the plastic chain conveyor of the working surface is located, the sensor can not prevent collision or damage. In order to ensure the damage of the sensor, sparks are generated, which will generate explosive gas and cause environmental explosion. The power supply and signal transmission from the sensor must meet the requirements.On the plastic chain conveyor, when the detailed operation, the reducer will definitely be used, and the use of the reducer, especially the conveyor such as the plastic chain plate, the speed reducer can often play a good role. . Therefore, there must be some requirements for its use, in order to be better to use.

Do you knnow the basic information and maintenance of stainless steel chain plates?

   We will give you more information about the basic information and parameters of the classification of the chain plates on the water line. The classification of the conveyor chain plates has been mentioned in the past few days. There are many, we try our best to make each series Each model is analyzed, but we mainly focus on the analysis of some of the more types of chain plates used in the usual conveyor equipment. The purpose of this is to make everyone have a very good chain line product for the conveyor line. Intuitive feelings.    The classification of stainless steel chain plates can be carried out according to the shape and application range. According to the shape, we can divide them into: non-punched stainless steel chain plates, punched stainless steel chain plates, and raised stainless steel chain plates.    The main materials of stainless steel chain plates are: carbon steel, 1cr13 stainless steel, 316 stainless steel, 304 stainless steel, 201 stainless steel.    Stainless steel chain plates are widely used, mainly in the production of frozen food, food processing industry, dehydrated vegetables, glass products and other products.    There are some faults in the process of installation and use of stainless steel chain plates. Below our technicians use some exclusion methods for some common fault problems to analyze for everyone:    1: If the chain transmission type stainless steel chain plate has jump chain and is unstable, check whether the sprocket at both ends of the drive shaft is synchronized and whether the tooth end is excessively worn.    2: If the stainless steel chain plate is shaken, check whether the conveyor and the roller in the conveying tunnel have rust and refuse to turn, and adjust them one by one.    3: If the stainless steel chain plate appears to be biased, the tensioning shaft at one end of the driven shaft should be adjusted slowly. Remember to adjust quickly and cause the edge of the chain to be scratched.

What should be paid attention to in the purchase chain?

     There are a lot of things to pay attention to when buying a chain. Many professionals are not very familiar with the method in the purchase chain. There are actually many functions in the chain. Look at what is in the chain. Pay attention to things?     The appearance of the chain is detected whether the inner/outer chain is deformed, cracked, embroidered; whether the pin is deformed or rotated, embroidered; whether the roller is cracked or broken. Excessive wear; whether the joint is loose or deformed; whether there is abnormal sound or abnormal vibration during operation, and the chain lubrication condition is good.     The detection method of the chain is to measure the front chain after cleaning; the chain to be tested is placed on the two sprockets, and the upper and lower sides of the tested chain should be supported; the chain before the measurement should be under the condition of applying the three-point minimum tensile load. Stay 1 min; when measuring, apply the specified measurement load on the chain to tension the upper and lower chains. The chain should ensure normal toothing on the sprocket; measure the center distance of the two sprocket wheels.

What are the four major mechanical devices for belt conveyors?

The belt conveyor is a modern automation equipment, mainly through the development of automatic control, digital, networked controllers and sensors to achieve the delivery of various materials. The assembly line generally includes a traction member, a carrier member, a driving device, a tensioning device, a redirecting device, a support member, and the like. The belt conveyor can also be used to form a space conveyor line, which is generally fixed. The belt conveyor has a large conveying capacity and a long transportation distance. It can also complete several process operations simultaneously in the conveying process, and is widely used.    The four major devices of the belt conveyor are the drive unit, the brake unit, the brake unit and the reversing unit. We will give a detailed introduction below. The first is the drive unit, which is undoubtedly the core of the entire belt conveyor. It has just been mentioned that the working principle of the belt conveyor is mainly realized by the friction transmission force, and the friction between the belt and the drum is generated by the motor and the speed reducer. The function of the drive device is to transmit friction to the conveyor belt, which in turn affects the transmission distance and the transport direction.    Common brake devices include roller backstops, belt backstops, and tile brakes. This is a flexible addition based on the actual needs of the user. Its main function is to prevent the conveyor belt of the inclined upward movement from moving under the action of the cargo weight, causing the material to flow backward. Therefore, we say that the brake device under the belt conveyor parameters is very intelligent, especially suitable for material conveying at large dip angles.    The belt conveyor is continuously and smoothly operated according to the friction transmission principle. When purchasing the belt conveyor, the customer will have a detailed understanding of the belt conveyor parameters according to the production needs of the relevant enterprises. Belt width, conveying length, conveying speed and conveying volume are all closely related to the belt conveyor parameters. The production capacity of the equipment is different depending on the parameters.    Next we will talk about the tensioning device, which is divided into horizontal tension and vertical tension. The function of the tensioning device is to maintain the necessary initial tension of the conveyor belt to avoid slipping on the drive drum and to ensure that the sag of the conveyor belt is within the specified range. This is also to ensure the balance and continuity of the transfer process. The fourth important device of the belt conveyor, which we can see very clearly on the belt conveyor picture, is a roller set. The reversing device is generally at the end of the belt conveyor, and the belt is transported at different angles to reduce the transport pressure of the belt. The angle of the redirecting device is closely related to the diameter of the drum and needs to be adjusted on site according to the specific situation.

Do You know the design parameters of these roller conveyors and the motor failure solution?

The roller conveyor has a simple structure, high reliability, and convenient use and maintenance. Applicable to the transportation of all kinds of boxes, bags, pallets, etc., bulk materials, small items or irregular items must be placed on the pallet or in the tote. The roller conveyor is capable of transporting a single piece of material that is very heavy or subject to large impact loads. The structure of the roller conveyor is divided into two types according to the driving method: a non-powered roller conveyor and a power roller conveyor. When selecting the roller conveyor, the food industry should give priority to the all-stainless steel body and stainless steel drum.    Before customizing the roller conveyor, we first need to determine the following roller conveyor parameters:    (1) the length, width and height of the object conveyed by the roller conveyor;    (2) the weight of each conveying unit of the roller conveyor;    (3) the bottom condition of the conveyor conveyed by the roller conveyor;    (4) Whether there are requirements for special working conditions;    (5) The roller conveyor belongs to the unpowered or motor driven type.    The most common fault of the roller conveyor is the problem of the motor. The motor is the heart of the whole mechanical equipment. A slight carelessness will cause the roller conveyor to be difficult to operate for normal operation. The failure to deal with it is on the one hand, on the other hand. It is necessary to carry out regular maintenance and maintenance in order to make the life of the roller conveyor longer, and bring better economic benefits to the production enterprise.    The most common failure of a roller conveyor during operation is that the motor cannot start or slow down immediately after a normal start. There are generally four reasons for this:    (1) May be caused by a line fault. Solution: Perform line inspection of the roller conveyor at the first time;    (2) It may also be caused by a drop in voltage. Solution: Check the roller conveyor voltage to ensure normal;    (3) There may also be a failure of the roller conveyor contactor. Solution: At this time, it is necessary to check the overloaded electrical appliance for timely replacement;    (4) Another possibility is that the roller conveyor is continuously operated for a short time in a short time. Solution: At this time, we only need to reduce the number of operations to return the roller conveyor to normal start-up.

Do you know the structural and practical technology of conveyor equipment?

    In the industrial technology of the round tube rubber belt in the accessories of the conveyor equipment, we use the forming die and the round pipe pressing technology to rapidly shape the conveyor belt into a round pipe structure by heat vulcanization, and increase the conveying of the multi-layer fabric core inside. With a canvas layer, it can be seen from the analysis of the force at each point that such a structure has a higher level of resistance to flexing, and adopts a scientific manufacturing process to comprehensively improve the overall external resistance of the rubber conveyor belt, and is mainly used in industrial and mining production applications. It is used in the matching of round tube belt conveyors with different inclination angles;    In addition, in the practical technology of the conveyor roller with clamping function, the structure is mainly composed of a clamping washer, a steel supporting piece and a connecting rod, and the protruding point is mainly to quickly press the rubber into a plurality of cushioning rubber rings. A clamping steel ring is installed at both ends of the drum, and a strong supporting frame is mounted on the main shaft, and the buffer rubber ring, the clamping bracket and the support frame are connected in series through the quenched connecting rod, in this way The belt drive roller is manufactured to ensure the satisfactory use of the special clamping type wear-resistant roller matched with the heat-resistant conveyor belt;    Furthermore, how to make the endless conveyor belt have more precise correction technology, the transportation equipment manufacturer gives a more reasonable solution, the specific implementation method is: installing a sliding support at the bottom position of the beam on the belt conveyor frame. And the bearing set of the offset bearing type is welded on the main bearing mounting seat, the bearing seat can realize the smooth sliding of the front and rear, and then the rubber conveyor belt is penetrated in the inner groove of the adjusting roller set, and at the same time in the bearing One side of the seat is equipped with a large stroke cylinder, the cylinder joint is flexibly connected with the bearing seat, and a speed control valve is arranged at the outer edge of the nylon rubber belt. Through the design improvement of the above scheme, the heat resistant belt can be effectively controlled during the work process. The central deflection phenomenon enhances the comprehensive performance of the industrial belt machine;    Finally, in the belt conveyor roller and its bracket interchange device, the manufacturing principle is mainly to machine two rectangular slots on the mating surface of the belt conveyor bracket fixing plate to make them perpendicular to each other. The straight slot is designed as a groove with an arc structure along the width direction of the fixing plate to start from the bolt mounting hole at the rightmost side of the fixing plate, and extends in an arc direction until the edge is penetrated into position, and the sound is heard By designing the product in this way, the manufacturer can completely improve the comprehensive interchange efficiency of the belt conveyor roller and its bracket, and fully meet the user's need for efficient operation in the field.

What are the common types of chains?

The transmission of the equipment is generally based on the chain, which everyone should know. Different types of chains will appear in different types of needs, and the role played will be different. So today, we will introduce the common types of chains.    Stainless steel chain: The parts are made of stainless steel. This type of chain is suitable for use in the food industry and susceptible to chemical and pharmaceutical erosion. It can also be used in high and low temperature applications.    Nickel-plated chain, galvanized chain, chrome-plated chain: All carbon steel materials can be surface treated. The surface of the parts is nickel-plated, galvanized or chrome-plated. It can be used in outdoor rain erosion, but it can not prevent thick Chemical liquid corrosion.    Self-lubricating chain: Some parts are made of a sintered metal impregnated with lubricating oil. This chain has excellent wear resistance and corrosion resistance, no maintenance (maintenance-free) and long service life. Widely used in high-force, wear-resistant requirements, and can not be often maintained, such as food industry automated production lines, high-end bicycle racing, less maintenance high-precision transmission machinery.    O-ring chain: O-ring seals are installed between the inner and outer chain plates of the roller chain to prevent dust from entering and the grease flowing out of the hinge. The chain is strictly pre-lubricated. Because the chain has superior parts and reliable lubrication, it can be used in open drives such as motorcycles.    Rubber chain: This type of chain is a U-shaped attachment plate on the outer link of the A and B series chains. Rubber is attached to the attachment plate (such as natural rubber NR, silicone rubber SI, etc.) to increase wear resistance and reduce Noise, increase shock resistance. For transport.    Sharp chain: This chain is widely used in the wood industry, such as the feeding and output of wood, cutting, conveyor transport and so on.    Agricultural machinery chain: Agricultural machinery chain is suitable for field working machinery such as walking tractors, threshers, combine harvesters, etc. This type of chain requires low cost but can withstand impact and wear. In addition, the chain should be greased or automatically lubricated.    High-strength chain: It is a special roller chain. It can improve the tensile strength by 15~30% and improve the impact performance by improving the shape of the chain plate, thickening chain plate, fine-punching chain plate hole and pin shaft heat treatment. Fatigue performance.    Side Bend Chain: This chain has a large hinge clearance and chain plate clearance, so it has greater flexibility for bending drive and conveying.    Escalator chain: used for escalators and automatic walkways. Due to the long working hours of the escalator, the safety requirements are high and the operation is stable. Therefore, it is required that the step chain must reach the specified smaller ultimate tensile load, the total length deviation of the two paired chains, and the step distance deviation.    Motorcycle chain: defined by the purpose of the chain, from the structure of the chain, there are two types of roller chain and sleeve chain, from the part used on the motorcycle, it has two types of use inside the engine and outside the engine. Most of the chains used in the engine are sleeve chain structures. The chain used outside the engine is the drive chain for driving the rear wheels, and most of them use roller chains. Such chains should pay special attention to ensure fatigue performance.    Agricultural clamping conveyor chain: suitable for walking wheat, rice harvesters and fixed motorized rice and wheat threshers, as well as semi-feeding combine harvesters

Improvement of the belt conveyor tail wheel

    In order to help the belt conveyor user solve some related defects, such as the outer surface of the tail roller is smooth, the belt conveyor is not easy to slip when starting and heavy loading; the tail roller is round, no anti-belt The function of deviation, the service life of the bearing is short; Hongjiang technicians have absorbed advanced experience at home and abroad, and combined with years of work experience in the industry, the structure of the traditional tail wheel part has been comprehensively improved, and the belt conveyor has been designed. The wing-shaped tail wheel part.    The wing-shaped tail wheel part of the PU belt conveyor is mainly composed of a wing-shaped drum, a shaft, a conical expansion sleeve, an outer spherical bearing with a slider seat, a bearing bracket, a tension adjusting screw and the like. Compared with the traditional tail wheel, the wing-shaped tail wheel has the following remarkable features:    1. The PU PVC belt conveyor bearing and bearing housing are of integral structure. This structure is extremely convenient in installation, use and maintenance, occupies small installation space, and reduces the process of machining the bearing seat in the production process. The wing roller and the shaft are connected by a conical expansion sleeve; the bearing is a spherical bearing with a slider outer ball, which can slide on a standard shaft, and the bearing and the shaft are fixed by a set screw;    2. The belt conveyor adopts the radial ball bearing with the outer ball of the slider. Compared with the ordinary bearing, it adopts the integral casting seat. The bearing has high manufacturing precision, good self-aligning performance, large load bearing capacity, especially the sealing performance is particularly good. The service life of the bearing is greatly prolonged; in the traditional tail wheel part, the sand dust easily enters the bearing from the gap between the bearing cover and the shaft, which seriously shortens the service life of the bearing.    3. The belt conveyor tension adjustment mechanism consists of only one screw and four nuts. The two upper nuts of the bearing seat are locked for a long time. Loosen the nut on the inner side of the bearing bracket and tighten the nut on the outer side of the bearing bracket. The belt is tightened, and the belt is loosened. The traditional adjustment mechanism of the tail wheel is composed of the adjusting screw, the upper cover and the lower bottom plate. The upper cover needs to be bent and drilled. It is necessary to drill and tap the teeth after welding, and the connecting bolts that need to be placed on the lower bottom plate of the upper and lower bottom plates are easily loosened. Therefore, the tension adjustment mechanism of the wing-shaped tail wheel portion is simpler and more convenient than the tension adjustment mechanism of the conventional tail wheel portion in the composition, the manufacturing process, and the assembly and disassembly, and the use is more reliable.    4. The surface friction coefficient of the belt conveyor wing roller is large, and the belt is not easy to slip when starting and heavy loading. The outer circumference of the airfoil drum is distributed in the circumferential direction, and the gap between the wings of the width of 35-40 mm is 40-45 mm. Therefore, during the operation of the belt conveyor, the friction coefficient between the belt and the drum is very large and it is not easy to slip.    5. The belt conveyor wing roller has self-cleaning effect. The flaps on the outer surface of the drum are connected to the mother pipe seamless steel pipe through the web, and the webs are separated by a partition plate, and the partition plate forms an angle of three to five degrees with the seamless steel pipe. During the use of the belt conveyor, if there is material scattered, the material will slide along the partition, so as to avoid the material being pulled between the belt and the roller with the return belt, which damages the belt and damages the drum.    6. The intermediate diameter of the belt conveyor's wing-shaped roller is 5~10mm larger than the diameter of the end, which has the function of preventing the belt from running off.    7. Since the surface friction coefficient of the belt conveyor wing roller is large, the diameter of the drum is significantly smaller than that of the conventional tail roller. Taking the B1000 belt conveyor as an example, the diameter of the conventional smooth roller is generally 500m, and the diameter of the airfoil roller is generally 300m-350m, which greatly saves raw materials.    8. Since the belt of the wing-shaped roller is not easy to slip on the drum, the belt damage caused by the material being pulled between the belt and the drum can be avoided, and the belt is prevented from being deflected, so the service life of the belt is greatly improved.