Power and free conveying device

Abstract

The utility model discloses a power and free conveying device, belongs to the technical field of battery packaging and conveying tools, and aims to solve the problem that a heavy-load roller way is damaged due to continuous friction between a tray and a roller. The utility model discloses a power and free conveying device which comprises a track assembly. The driven roller assembly comprises a driven wheel shaft, a driven roller, a track driven belt wheel and a frictional resistance adjusting module; when the friction force acting on the driven roller exceeds a set value, the driven wheel shaft does not synchronously rotate along with the track driven belt wheel; the driving roller assembly comprises a driving wheel shaft, a driving roller and a track driving belt wheel which can rotate synchronously, and the track driving belt wheel is connected to the track driven belt wheel through a transmission belt; and a drive assembly. According to the power and free conveying device, when the friction force on the driven idler wheel exceeds a set value, the friction resistance adjusting module enables the driven wheel shaft not to synchronously rotate along with the track driven belt wheel any more, invalid friction between the driven idler wheel and the tray is reduced, and operation noise is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery package packing and conveying tool technical field especially relates to accumulative and placing conveying device. BACKGROUND

[0002] The battery pack is composed of a plurality of components including the battery cell, and in the process of assembling the battery pack, the battery pack is usually conveyed to each process station to perform the corresponding process. The main method to realize the conveying of the battery pack is to use a conveying device, and the specific type of the conveying device is not limited. Some existing manufacturers use heavy-duty roller as the conveying device.

[0003] The heavy-duty roller mainly includes a support and a plurality of rollers arranged on the support. At least one of the rollers can rotate around its own axis under the action of a driving device, and the other rollers rotate synchronously with the roller. The tray carrying the battery pack is placed on the roller, and there is friction between the tray and the roller. With the rotation of the roller, the tray and the battery pack can be conveyed forward.

[0004] The defects of the existing heavy-duty roller include that when a separator or a stopper is encountered, the tray is forcibly stopped, and at this time, the continuous friction between the tray and the roller will cause damage to the heavy-duty roller, and even the service life of the heavy-duty roller may be shortened. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an accumulative and placing conveying device to solve the problem of damage to the heavy-duty roller caused by continuous friction between the tray and the roller, and prolong the service life of the device.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The accumulative and placing conveying device comprises a track assembly, a driven roller assembly arranged on the track assembly, the driven roller assembly comprising a driven axle, a driven roller, a track driven pulley and a friction resistance adjusting module, the driven roller being capable of rotating synchronously with the driven axle, the friction resistance adjusting module being used to adjust the maximum friction force that the driven roller can withstand when maintaining a rotating state, the driven axle no longer rotating synchronously with the track driven pulley when the friction force acting on the driven roller exceeds a set value, a driving roller assembly arranged on the track assembly, the driving roller assembly comprising a driving axle capable of synchronous rotation, a driving roller, a track driving pulley, the track driving pulley being connected to the track driven pulley through a transmission belt, and a driving assembly directly or indirectly connected to the driving axle to drive the driving axle to rotate around its own axis.

[0008] In one preferred embodiment, the driving assembly comprises a driving motor, a motor driving pulley, a motor driven pulley and a synchronous belt, the motor driving pulley is connected to the output end of the driving motor, the driving motor can drive the motor driving pulley to rotate around its own axis; one end of the synchronous belt is sleeved on the motor driving pulley, and the other end is sleeved on the motor driven pulley, the motor driving pulley can drive the motor driven pulley to rotate synchronously through the synchronous belt.

[0009] In one preferred embodiment, the friction resistance adjusting module comprises a first friction piece, a second friction piece, an elastic piece and a locking piece, one of the first friction piece and the second friction piece is arranged on the driven wheel shaft, and the other of the first friction piece and the second friction piece is connected to the track driven pulley; one end of the elastic piece is abutted on one of the first friction piece and the second friction piece, and the other end of the elastic piece is abutted on the locking piece, the locking piece can move along the axis direction of the driven wheel shaft to change the elastic force on the elastic piece.

[0010] In one preferred embodiment, one of the first friction piece and the second friction piece is matched to form a friction assembly, and the track driven pulley is connected with the friction assembly at both ends.

[0011] In one preferred embodiment, the track driven pulley and / or the track driving pulley is a double-row synchronous pulley, and the two parallel transmission belts are connected.

[0012] In one preferred embodiment, a roller friction bushing made of non-metallic material is sleeved on the driving wheel shaft, and the driving roller is sleeved on the outside of the roller friction bushing; and / or a pulley sliding bushing made of non-metallic material is sleeved on the driven wheel shaft, and the track driven pulley is sleeved on the outside of the pulley sliding bushing.

[0013] In one preferred embodiment, the track assembly comprises a positioning groove in the shape of U, a positioning through hole is formed in the side wall of the positioning groove, the driven roller and / or the driving roller are equidistantly distributed in the positioning groove, and the driven wheel shaft and / or the driving wheel shaft are arranged in the positioning through hole.

[0014] In one preferred embodiment, the accumulator conveying device further comprises a base assembly, the base assembly comprises a supporting seat and a footing connected together, the track assembly is connected to the top surface of the supporting seat, and the supporting seat is fixedly connected to the base surface through the footing.

[0015] In one preferred embodiment, the supporting seat is a frame structure made of square tubes.

[0016] In one preferred embodiment, the track assembly comprises two positioning grooves arranged in parallel, each of the positioning grooves is provided with the driven roller assembly; and / or, each of the positioning grooves is provided with the driving roller assembly, and the driving roller assemblies in the two positioning grooves are connected through a connecting shaft structure.

[0017] The utility model discloses a stack and send device, through track driving pulley, transmission belt and track driven pulley, the rotation of driving axle is transmitted to driven axle, and the simple and reasonable structure is stable in transmission, and convenient to use, when the friction on driven roller exceeds the set value, and the friction resistance adjusting module makes driven axle no longer rotate synchronously with track driven pulley, and driven roller stops with driven axle, and the tray on driven roller no longer continues to go forward, realizes the stack and send of the tray loaded with battery pack, reduces the invalid friction between driven roller and tray, and the running noise is smaller, prolongs the service life of driven roller assembly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the stack and send device provided by the utility model specific embodiment, and the stack and send device comprises track assembly, driving assembly, base assembly and connecting shaft structure.

[0019] Figure 2 It is the structure schematic diagram of the track assembly provided by the utility model specific embodiment, and the track assembly comprises two positioning grooves arranged in parallel.

[0020] Figure 3 It is the structure schematic diagram of the driven roller assembly provided by the utility model specific embodiment, and the driven roller assembly comprises driven roller, driven pulley and driven pulley bearing.

[0021] Figure 4 It is the structure schematic diagram of the driving roller assembly provided by the utility model specific embodiment, and the driving roller assembly comprises driving roller, driving pulley and driving pulley bearing.

[0022] Figure 5 It is the structure schematic diagram of the driving assembly provided by the utility model specific embodiment, and the driving assembly comprises driving motor, driving motor bearing and driving motor shaft.

[0023] Figure 6 It is the structure schematic diagram of the base assembly provided by the utility model specific embodiment, and the base assembly comprises base, base bearing and base shaft.

[0024] Figure 7 It is the schematic diagram of the connecting shaft structure provided by the utility model specific embodiment.

[0025] In the drawing:

[0026] 1, track assembly; 2, driven roller assembly; 3, driving roller assembly; 4, driving assembly; 5, base assembly; 6, connecting shaft structure; 11, positioning groove; 12, positioning through hole; 13, protective cover; 14, cross rod; 21, driven axle; 22, driven roller; 23, track driven pulley; 24, first friction piece; 25, second friction piece; 26, elastic piece; 27, locking piece; 28, pulley sliding bushing; 29, split pin; 31, driving axle; 32, driving roller; 33, track driving pulley; 34, roller friction bushing; 41, driving motor; 42, motor driving pulley; 43, motor driven pulley; 44, synchronous belt; 51, support seat; 52, ground foot; 61, connecting shaft; 62, universal coupling. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the drawings. In the following description, many specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways other than those described herein, and skilled persons in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0028] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] This embodiment discloses an accumulation and conveying device for transporting battery packs between different processes on an assembly line. For example... Figures 1 to 4 As shown, the accumulation and conveying device includes a track assembly 1, a driven roller assembly 2, a driving roller assembly 3, and a drive assembly 4. The driven roller assembly 2 and the driving roller assembly 3 are respectively mounted on the track assembly 1.

[0034] The driven roller assembly 2 includes a driven wheel shaft 21, a driven roller 22, a track driven pulley 23, and a friction resistance adjustment module. The driven roller 22 and the track driven pulley 23 can rotate synchronously with the driven wheel shaft 21. The friction resistance adjustment module is used to adjust the maximum friction force that the driven roller 22 can withstand when maintaining its rotation state.

[0035] The driving assembly 4 is directly or indirectly connected to the driving axle 31 to drive the driving axle 31 to rotate around its own axis. The rotation of the driving axle 31 is transmitted to the driven axle 21 through the track driving pulley 33, the transmission belt and the track driven pulley 23, which is simple and reasonable in structure, stable in transmission and convenient to use.

[0036] When the tray loaded with the battery pack is forced to stop by the separator or the stopper, the frictional force acting on the driven roller 22 by the tray increases. When the frictional force exceeds a set value, the driven axle 21 no longer rotates synchronously with the track driven pulley 23, that is, the driven pulley 23 continues to rotate but the driven axle 21 stops (or slips), the driven roller 22 synchronously stops with the driven axle 21, and the tray located on the driven roller 22 no longer continues to move forward, thereby achieving the accumulation and conveying of the tray loaded with the battery pack.

[0037] When the tray loaded with the battery pack is blocked, the setting of the friction resistance adjusting module reduces the invalid friction between the driven roller 22 and the tray, reduces the running noise, prolongs the service life of the driven roller assembly 2, is low in manufacturing cost and convenient to maintain and replace. When the driven axle 21 stops, the driving assembly 4 still drives the driving axle 31 to rotate, without affecting the normal movement of the tray on the driving roller 32.

[0038] The maximum load of the accumulation and conveying device is 1000 Kg / m, the maximum moving speed is 18 m / min, the tray is conveyed more stably and efficiently, can be accumulated and conveyed as needed, adapts to different process time requirements, avoids a large number of battery packs to be processed to be accumulated on the same process, and has a better use experience.

[0039] The specific structure of the track assembly 1 is not limited, which can provide support for the driven roller assembly 2 and the driving roller assembly 3. Figures 1 to 4 As shown in the figure, the track assembly 1 includes a positioning groove 11 in the shape of U, and positioning through holes 12 are respectively arranged on the two side walls of the positioning groove 11. The driven roller 22 and / or the driving roller 32 are equidistantly distributed in the positioning groove 11 to provide uniform support force for the tray; the driven axle 21 and / or the driving axle 31 are arranged in the positioning through holes 12, the positioning through holes 12 provide support for the driven axle 21 and / or the driving axle 31 and limit the driven axle 21 and / or the driving axle 31, the driven axle 21 and / or the driving axle 31 can only rotate around its own axis but cannot move in the radial direction. When the driven axle 21 and / or the driving axle 31 rotates around its own axis, the driven roller 22 and / or the driving roller 32 can drive the tray to move in the extension direction of the positioning groove 11.

[0040] In order to make the tray move more smoothly, the track assembly 1 comprises two positioning grooves 11 arranged in parallel, the two positioning grooves 11 are connected together through the cross bar 14, and the positioning groove 11 and the cross bar 14 form a H-shaped structure. In order to protect the positioning groove 11, a protective cover 13 is arranged on the side of the positioning groove 11 away from the cross bar 14. The protective cover 13 is attached to the positioning groove 11, which can avoid the impact of the object on the positioning groove 11, and the use is safer.

[0041] Due to the different distances between different processes of the assembly line, the track assembly 1 can be composed of a plurality of positioning grooves 11 connected end to end, and two, three or more groups of positioning grooves 11 can be arranged according to the needs to form a length-adjustable track assembly 1, which has a wide range of applications and is convenient to adjust the length.

[0042] Each positioning groove 11 is provided with a driven roller assembly 2, and each positioning groove 11 is provided with a driving roller assembly 3, and the driving roller assemblies 3 in the two positioning grooves 11 are connected through a connecting shaft structure 6. Figure 7 As shown in the figure, the connecting shaft structure 6 comprises a connecting shaft 61 and a universal coupling 62 arranged at both ends of the connecting shaft 61, and each universal coupling 62 is connected to a positioning groove 11 which is provided with a driven roller assembly 2 or a driving roller assembly 3, so that the driven roller assemblies 2 or the driving roller assemblies 3 on both sides rotate synchronously, and the conveying process of the tray is more stable.

[0043] On the basis of the above structure, a pulley sliding bushing 28 made of non-metallic material is sleeved on the driven wheel shaft 21, and the track driven pulley 23 is sleeved on the outside of the pulley sliding bushing 28, which enhances the wear resistance of the track driven pulley 23 and does not need to be lubricated, which is more convenient to use. The specific material of the pulley sliding bushing 28 is not limited, which can increase the wear resistance of the track driven pulley 23 without affecting its normal use.

[0044] In addition, the driven roller assembly 2 also comprises auxiliary components such as bearings, retaining rings and fixing rings, and other auxiliary components in the existing structure can also be applied to the driven roller assembly 2, which will not be described here. The specific connection mode of the driven wheel shaft 21 and the driven roller 22 is not limited, and in the present embodiment, the driven roller 22 is connected to the driven wheel shaft 21 through a split pin 29, which has a more firm installation structure and is convenient to disassemble and assemble.

[0045] The specific structure of the friction resistance adjusting module is not limited, which can adjust the maximum friction that the driven roller 22 can withstand when maintaining a rotating state. As shown in the figure, the friction resistance adjusting module comprises a first friction piece 24, a second friction piece 25, an elastic piece 26 and a locking piece 27. Figure 3 Among them, one of the first friction piece 24 and the second friction piece 25 is arranged on the driven wheel shaft 21, and the other of the first friction piece 24 and the second friction piece 25 is connected to the track driven pulley 23.

[0046] In the embodiment, the first friction member 24 and the second friction member 25 are matched friction plates; the two second friction members 25 are respectively fixed on the two ends of the track driven pulley 23 through buckles, and can prevent slipping; the first friction member 24 is fixedly connected with the driven pulley shaft 21, and the overall structure is more stable; the elastic member 26 can be but is not limited to a spring, and the locking member 27 can be but is not limited to a locking nut. The end of the driven pulley shaft 21 is provided with an external thread matched with the locking nut, and rotating the locking nut can make it move along the axial direction of the driven pulley shaft 21, so as to change the elastic length of the spring.

[0047] In order to improve stability, one first friction member 24 and one second friction member 25 are matched to form a friction assembly, and the two ends of the track driven pulley 23 are connected with the friction assembly. The two ends of the track driven pulley 23 are more balanced in stress, and the acting force between the track driven pulley 23 and the driven pulley shaft 21 will not be motionally locked between them.

[0048] One end of the elastic member 26 abuts against one of the first friction member 24 and the second friction member 25, and the other end of the elastic member 26 abuts against the locking member 27. The locking member 27 can move along the axial direction of the driven pulley shaft 21 to change the elastic force on the elastic member 26. The elastic force on the elastic member 26 will make the first friction member 24 and the second friction member 25 abut together, and the size of the elastic force determines the tightness of the abutment of the first friction member 24 and the second friction member 25. The greater the elastic force, the tighter the abutment of the first friction member 24 and the second friction member 25, and the more difficult the driven pulley shaft 21 slips; on the contrary, the smaller the elastic force, the looser the abutment of the first friction member 24 and the second friction member 25, and the easier the driven pulley shaft 21 slips.

[0049] On the basis of the above structure, the roller friction bushing 34 made of non-metallic material is sleeved on the driving pulley shaft 31, and the driving roller 32 is sleeved on the outside of the roller friction bushing 34, so as to improve the wear resistance of the driving roller 32, without the need for lubrication, and the use is more convenient. The specific material for preparing the roller friction bushing 34 is not limited, which can increase the wear resistance of the driving roller 32 without affecting the normal use of the driving roller 32.

[0050] In order to enhance the stability of the transmission between the pulleys, the track driven pulley 23 and / or the track driving pulley 33 is a double-row synchronous pulley, which is connected through two parallel transmission belts, and the stress is more balanced; even if one transmission belt is loose, the other transmission belt can also be used normally, avoiding that the rotation of the track driving pulley 33 cannot be transmitted to the track driven pulley 23 due to the loosening of the transmission belt, and the working state of the accumulation and conveying device is more stable.

[0051] On the basis of the above structure, as shown in FIG. 6, the roller friction bushing 34 is provided with a plurality of roller friction grooves 341, and the driving roller 32 is provided with a plurality of roller friction protrusions 321 matched with the roller friction grooves 341. Figure 5As shown, the driving assembly 4 comprises a driving motor 41, a motor driving pulley 42, a motor driven pulley 43, a synchronous belt 44, a protective cover and a mounting base. The motor driving pulley 42 is connected to the output end of the driving motor 41, and the driving motor 41 can drive the motor driving pulley 42 to rotate around its own axis; one end of the synchronous belt 44 is sleeved with the motor driving pulley 42, and the other end is sleeved with the motor driven pulley 43, and the motor driving pulley 42 can drive the motor driven pulley 43 to rotate synchronously through the synchronous belt 44.

[0052] As shown in the drawings, Figures 2 to 5 The driving assembly 4 is connected to the positioning groove 11 or the protective cover 13 of the track assembly 1 through the mounting base, and the connection structure is more stable. The motor driving pulley 42 is directly or indirectly connected to the driving shaft 31, and can drive the driving shaft 31 to rotate. The rotation of the output end of the driving motor 41 is transmitted to the motor driving pulley 42 through the combination structure of the pulley and the synchronous belt, and then to the driving shaft 31, so that the transmission efficiency is high and the response speed is fast.

[0053] In order to make the driven roller assembly 2 and the driving roller assembly 3 at a height convenient for placing the tray, as shown in the drawings, Figure 1 and Figure 6 The accumulation and conveying device further comprises a base assembly 5. Specifically, the base assembly 5 comprises a support base 51 and a ground foot 52 connected together, and the lower surface of the track assembly 1 is fixedly connected to the top surface of the support base 51, and the support base 51 is fixedly connected to the ground surface (for example, the ground surface of the factory building) through the ground foot 52.

[0054] The specific shape of the support base 51 is not limited, and it can stably support the track assembly 1. In this embodiment, the support base 51 is a frame structure made of square tubes, and has higher overall strength. The side surface of the support base 51 is provided with a wire slot mounting bracket, which facilitates integrated wiring. A profiled connecting strip is arranged on the top surface of the support base 51, and the track assembly 1 is connected to the support base 51 through the profiled connecting strip, so that the connection structure is more stable.

[0055] It should be noted that the above is only a preferred embodiment of the present application and the technical principles used. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. Accumulation and transport device, characterized in that, The application relates to a track assembly (1), a driven roller assembly (2) arranged on the track assembly (1), the driven roller assembly (2) comprising a driven roller shaft (21), a driven roller (22) capable of synchronous rotation with the driven roller shaft (21), a track driven pulley (23) and a friction resistance adjusting module, the friction resistance adjusting module being used for adjusting the maximum friction that the driven roller (22) can bear when maintaining a rotating state, and when the friction acting on the driven roller (22) exceeds a set value, the driven roller shaft (21) no longer rotates synchronously with the track driven pulley (23); a driving roller assembly (3) arranged on the track assembly (1), the driving roller assembly (3) comprising a driving roller shaft (31) capable of synchronous rotation, a driving roller (32) and a track driving pulley (33), the track driving pulley (33) being connected to the track driven pulley (23) through a transmission belt; and a driving assembly (4) directly or indirectly connected to the driving roller shaft (31) to drive the driving roller shaft (31) to rotate around its own axis. The driving assembly (4) comprises a driving motor (41), a motor driving pulley (42), a motor driven pulley (43) and a synchronous belt (44), the motor driving pulley (42) being connected to the output end of the driving motor (41), the driving motor (41) being capable of driving the motor driving pulley (42) to rotate around its own axis, one end of the synchronous belt (44) being sleeved on the motor driving pulley (42) and the other end being sleeved on the motor driven pulley (43), and the motor driving pulley (42) being capable of driving the motor driven pulley (43) to synchronously rotate through the synchronous belt (44). The friction resistance adjusting module comprises a first friction piece (24), a second friction piece (25), an elastic piece (26) and a locking piece (27), one of the first friction piece (24) and the second friction piece (25) being arranged on the driven roller shaft (21), the other of the first friction piece (24) and the second friction piece (25) being connected to the track driven pulley (23), one end of the elastic piece (26) abutting against one of the first friction piece (24) and the second friction piece (25), the other end of the elastic piece (26) abutting against the locking piece (27), and the locking piece (27) being capable of moving along the axis direction of the driven roller shaft (21) to change the elastic force on the elastic piece (26). One first friction piece (24) and one second friction piece (25) are attached to form a friction assembly, and the track driven pulley (23) is connected with the friction assembly at both ends. The track driven pulley (23) and / or the track driving pulley (33) are double-row synchronous pulleys and are connected through two parallel transmission belts.

2. The accumulation conveyor according to claim 1, characterized in that ​ 3. The stocker according to claim 1, wherein ​ 4. The accumulation conveyor of claim 3, wherein, ​ 5. The stocker according to claim 1, wherein ​ 6. The stock delivery device according to claim 1, wherein A roller friction bushing (34) made of non-metallic material is sleeved on the driving axle (31), and the driving roller (32) is sleeved outside the roller friction bushing (34); and / or, A belt wheel sliding bushing (28) made of non-metallic material is sleeved on the driven axle (21), and the track driven belt wheel (23) is sleeved outside the belt wheel sliding bushing (28).

7. The accumulation conveyor according to any one of claims 1 to 6, characterized in that The track assembly (1) comprises a positioning groove (11) in a U shape, a positioning through hole (12) is formed in the side wall of the positioning groove (11), the driven roller (22) and / or the driving roller (32) are equidistantly distributed in the positioning groove (11), and the driven axle (21) and / or the driving axle (31) passes through the positioning through hole (12).

8. The accumulation conveyor according to any one of claims 1 to 6, characterized in that The accumulation and delivery device further comprises a base assembly (5) comprising a support base (51) and a footing (52) connected together, the track assembly (1) is connected to the top surface of the support base (51), and the support base (51) is fixedly connected to the base surface through the footing (52).

9. The accumulation conveyor of claim 8, wherein, The support base (51) is a frame structure made of a square tube.

10. The accumulation conveyor according to any one of claims 1 to 6, characterized in that The track assembly (1) comprises two parallel positioning grooves (11), and the driven roller assembly (2) is arranged in each of the positioning grooves (11); and / or, The driving roller assembly (3) is arranged in each of the positioning grooves (11), and the driving roller assemblies (3) in the two positioning grooves (11) are connected through a connecting shaft structure (6).

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