Roller conveying device

Abstract

The utility model discloses a roller conveying device, and belongs to the technical field of battery conveying. The roller conveying device comprises a conveying assembly and a blocking assembly; two conveying assemblies are oppositely arranged along the Y axis, each conveying assembly comprises a support and a plurality of driving wheel pieces, the support is provided with the driving wheel pieces at intervals along the X axis, each driving wheel piece comprises a wheel body and a rolling wheel arranged on the wheel body, and each rolling wheel is used for supporting and rotating a conveying material disc; the blocking assembly is arranged between the two supports and can block a material disc containing a to-be-conveyed piece from moving along the X axis, so that the rotating friction force generated by the wheel body is smaller than the abutting friction force, borne by the rolling wheels, of the material disc, and the rolling wheels do not rotate. According to the idler wheel conveying device, when the blocking assembly is started to block the material disc, the idler wheels are in the stop state, so that rolling friction generated between the idler wheels and the material disc can be avoided to generate dust, and the performance of a piece to be conveyed and the machining environment are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery conveying technical field especially relates to a roller conveying device. BACKGROUND

[0002] In the current roller conveying device, a number of rollers on opposite sides support and convey a tray with batteries placed thereon to realize the conveying of the batteries. When the batteries are conveyed to a processing station, a blocking mechanism blocks the tray to prevent the rollers from continuously conveying the tray in the conveying direction, thereby ensuring stable processing of the batteries at the processing station.

[0003] However, during the process of blocking the tray at the processing station, the rollers do not stop rotating, resulting in rolling friction between the rollers and the tray and generating dust, which affects the performance of the batteries and the processing environment. SUMMARY

[0004] The utility model aims at providing a roller conveying device that can stop the rollers while the blocking assembly is activated to block the tray, thereby avoiding rolling friction between the rollers and the tray and generating dust, and ensuring the performance of the conveyed parts and the processing environment.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A roller conveying device comprises:

[0007] A conveying assembly is oppositely arranged along the Y-axis. The conveying assembly comprises a support and a driving wheel part. The support is spaced apart along the X-axis and comprises a number of driving wheel parts. The driving wheel part comprises a wheel body and a roller arranged on the wheel body. Each roller is used to support and rotate the tray. The X-axis is parallel to the conveying direction of the tray.

[0008] A blocking assembly is arranged between the two supports. The blocking assembly can block the tray with the conveyed parts from moving along the X-axis, so that the rolling friction generated by the wheel body is less than the pressing friction of the tray on the roller, and the roller does not rotate.

[0009] As an optional solution, the wheel body comprises:

[0010] A support shaft is spaced apart and comprises a first key, a second key, and a limiting boss. The roller is sleeved on the support shaft. The support shaft is used to drive the rotation of the roller.

[0011] A first sprocket is movably sleeved on the support shaft. The first sprocket is located between the first key and the second key. The first sprocket can drive the rotation of the support shaft.

[0012] A first friction sheet is sleeved on the support shaft and located between the first key and the first sprocket;

[0013] An elastic limiting member is connected to one end of the support shaft which is not provided with the roller and elastically abuts against the first friction sheet;

[0014] A second friction sheet is clamped on the second key, and one end of the second friction sheet away from the first friction sheet abuts against the limiting boss.

[0015] As an optional solution, the wheel body further comprises:

[0016] A first bearing, the support shaft is movably arranged in the inner ring of the first bearing, and the first sprocket is sleeved on the outer ring of the first bearing.

[0017] As an optional solution, the elastic limiting member comprises:

[0018] A locking member is locked to one end of the support shaft which is not provided with the roller;

[0019] An elastic member is sleeved on the support shaft, one end of the elastic member abuts against the locking member, and the other end of the elastic member abuts against the first friction sheet.

[0020] As an optional solution, the wheel body further comprises:

[0021] A second bearing, the outer ring of the second bearing is arranged in the bracket, and the support shaft is arranged in the inner ring of the second bearing.

[0022] As an optional solution, the roller conveying device further comprises:

[0023] A connecting shaft, the connecting shaft is sleeved with an intermediate wheel at opposite ends along the Y axis, a conveying chain is connected between the intermediate wheels and the rollers located on the same side, and a linkage chain is connected between each roller located on the same side.

[0024] As an optional solution, the roller conveying device further comprises:

[0025] A driving assembly, the driving assembly is used to drive each first sprocket located on the same side to rotate.

[0026] As an optional solution, the driving assembly comprises:

[0027] A driving member is arranged between the two brackets;

[0028] A second sprocket is connected to the output shaft of the driving member, and a driving chain is connected between the second sprocket and each first sprocket on the same side.

[0029] As an option, the blocking assembly comprises:

[0030] A sensor is arranged on the bracket, and the sensor is used to detect the conveying position of the conveying piece along the X axis.

[0031] The blocking member comprises a blocking cylinder and a baffle, the blocking cylinder is in communication connection with the sensor, the fixed end of the blocking cylinder is arranged between the two brackets, the driving end of the blocking cylinder is connected with the baffle, and the blocking cylinder is used to drive the baffle to move along the Z axis, so that the baffle can resist the tray along the Z axis.

[0032] As an option, the blocking member is provided with at least two, and each blocking member is arranged along the Y axis.

[0033] The beneficial effects of the present application are as follows:

[0034] In the roller conveying device, the blocking assembly and the two conveying assemblies are arranged in cooperation, the conveying assembly comprises a bracket and a driving wheel member, a plurality of driving wheel members are arranged on the bracket along the X axis, and the rollers of each driving wheel member support and rotate the conveying tray; when the conveying piece on the tray is conveyed to the machining station, the blocking assembly is started to block the tray from moving along the X axis, so that the conveying piece can be stably machined at the machining station; during the blocking process of the blocking assembly, the rotating friction of the wheel body of the driving wheel member is less than the pressing friction of the tray on the roller under the blocking force of the blocking assembly and the pressing force of the conveying piece, so that the wheel body cannot drive the roller to rotate, that is, the conveying piece, the tray and the roller are all in a stopped state, so that the rolling friction between the roller and the tray can be avoided, dust caused by the rolling friction can be avoided, and the performance of the conveying piece and the machining environment can be better ensured. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a top view of the roller conveying device provided by the present application;

[0036] Figure 2 is a front view of the roller conveying device provided by the present application;

[0037] Figure 3 is a structural schematic view of the driving wheel member provided by the present application;

[0038] Figure 4 is a structural schematic view of the wheel body provided by the present application.

[0039] Explanation of reference signs:

[0040] 10 - conveying assembly; 11 - bracket; 12 - driving wheel member; 121 - wheel body; 1211 - support shaft; 12111 - plastic protrusion; 1212 - first key; 1213 - second key; 1214 - limiting boss; 1215 - first sprocket; 1216 - first friction plate; 1217 - elastic limiting member; 12171 - locking member; 12172 - elastic member; 1218 - second friction plate; 1219 - first bearing; 1210 - second bearing; 122 - roller; 123 - linkage chain;

[0041] 21 - sensor; 22 - blocking member;

[0042] 31 - driving member; 32 - second sprocket; 33 - driving chain; 34 - support wheel; 35 - tension adjusting structure;

[0043] 40 - tray; 50 - conveying member; 60 - connecting shaft. DETAILED DESCRIPTION

[0044] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of such features and / or steps are mutually exclusive.

[0045] Any of the features disclosed in this specification, unless explicitly stated otherwise, can be replaced by alternative features serving the same, or a similar, purpose.

[0046] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model is further illustrated below by combining with the drawings and through specific implementation manners.

[0047] The roller conveying device can convey the conveying member to each machining station along the conveying direction for machining, and can ensure stable machining of the conveying member at each machining station, thereby ensuring the performance of the conveying member and a relatively clean machining environment. The conveying member is placed on the tray for conveying and machining. In this embodiment, the conveying member can be a battery. The specific structure of the conveying member is not limited.

[0048] Specifically, as Figures 1 to 4As shown, the roller conveying device comprises a conveying assembly 10 and a blocking assembly; wherein two conveying assemblies 10 are oppositely arranged along the Y axis, the conveying assembly 10 comprises a support 11 and a driving wheel component 12, the support 11 is spaced apart along the X axis and provided with a plurality of driving wheel components 12, the driving wheel component 12 comprises a wheel body 121 and a roller 122 arranged on the wheel body 121, each roller 122 is used to support and rotate the conveying tray 40; the blocking assembly is arranged between the two supports 11, the blocking assembly can block the tray 40 on which the conveying piece 50 is placed from continuing to move along the X axis, so that the rotating friction generated by the wheel body 121 is less than the pressing friction of the tray 40 on the roller 122, so that the roller 122 does not rotate. Wherein the X axis is parallel to the conveying direction of the tray 40, and the specific conveying direction of the tray 40 is shown by the arrow A in Figure 1 and Figure 2 .

[0049] By arranging the blocking assembly and the two conveying assemblies 10 in cooperation, the conveying assembly 10 comprises the support 11 and the driving wheel component 12, and a plurality of driving wheel components 12 are arranged on the support 11 along the X axis, so that each driving wheel component 12 supports and rotates the conveying tray 40; when the conveying piece 50 on the tray 40 is conveyed to the machining station, the blocking assembly is started to block the tray 40 from continuing to move along the X axis, so as to ensure that the conveying piece 50 is stably machined at the machining station.

[0050] The roller conveying device in the embodiment can adjust the relative size of the rotating friction generated by the wheel body 121 itself and the pressing friction of the tray 40 on the roller 122, relative to the prior art; during the process of starting the blocking assembly to block the tray 40, because at this time the blocking force of the blocking assembly and the pressing force of the conveying piece 50, the rotating friction generated by the wheel body 121 itself of the driving wheel component 12 is less than the pressing friction of the tray 40 on the roller 122, so that the wheel body 121 cannot drive the roller 122 to rotate, that is, at this time, the conveying piece 50, the tray 40 and the roller 122 are all in a stopped state, so as to ensure that there is no rolling friction between the roller 122 and the tray 40, avoid dust due to rolling friction, and thus better ensure the performance of the conveying piece 50 and the processing environment.

[0051] Specifically, as shown in Figures 1 to 4As shown, the wheel body 121 comprises a supporting shaft 1211, a first sprocket wheel 1215, a first friction plate 1216, an elastic limiting piece 1217 and a second friction plate 1218; wherein, the first key 1212, the second key 1213 and the limiting boss 1214 are arranged on the supporting shaft 1211 in intervals, and the roller 122 is sleeved on the supporting shaft 1211, and the supporting shaft 1211 is used to drive the roller 122 to rotate; the first sprocket wheel 1215 is movably sleeved on the supporting shaft 1211, and the first sprocket wheel 1215 is located between the first key 1212 and the second key 1213, and the first sprocket wheel 1215 can drive the supporting shaft 1211 to rotate; the first friction plate 1216 is sleeved on the supporting shaft 1211 and located between the first key 1212 and the first sprocket wheel 1215; one end of the elastic limiting piece 1217 is connected to the end of the supporting shaft 1211 which is not provided with the roller 122, and the other end of the elastic limiting piece 1217 elastically abuts against the first friction plate 1216; the second friction plate 1218 is clamped to the second key 1213, and the end of the second friction plate 1218 away from the first friction plate 1216 abuts against the limiting boss 1214, that is, the position of the second friction plate 1218 on the supporting shaft 1211 remains unchanged, and the positions of the first friction plate 1216 and the first sprocket wheel 1215 on the supporting shaft 1211 can change.

[0052] Specifically, as shown in Figure 3 and Figure 4 The wheel body 121 further comprises a first bearing 1219, the supporting shaft 1211 movably penetrates the inner ring of the first bearing 1219, and the first sprocket wheel 1215 is sleeved on the outer ring of the first bearing 1219, so that the first sprocket wheel 1215 moves synchronously with the outer ring of the first bearing 1219, thereby achieving the movably sleeving between the first sprocket wheel 1215 and the supporting shaft 1211.

[0053] Further, as shown in Figure 3 The elastic limiting piece 1217 comprises a locking piece 12171 and an elastic piece 12172; wherein, the locking piece 12171 is locked to the end of the supporting shaft 1211 which is not provided with the roller 122; the elastic piece 12172 is sleeved on the supporting shaft 1211, one end of the elastic piece 12172 abuts against the locking piece 12171, and the other end of the elastic piece 12172 abuts against the first friction plate 1216, so that the elastic piece 12172 can provide elastic pressing action for the first friction plate 1216. In the embodiment, the locking piece 12171 can be a locking nut, so that the locking nut is threadedly locked to the end of the supporting shaft 1211 which is not provided with the roller 122; and the elastic piece 12172 can be a compression spring.

[0054] Specifically, when each roller 122 is in an empty state without the tray 40 placed thereon, the first sprocket 1215 is rotated, and under the frictional force between the inner ring of the first bearing 1219 and the support shaft 1211, the first sprocket 1215 can drive the support shaft 1211 to rotate, and further drive the rollers 122 on the support shaft 1211 to rotate, thereby realizing the synchronous rotation of each roller 122.

[0055] When the tray 40 provided with the to-be-transported piece 50 is placed on each roller 122, at this time, the tray 40 increases the pressing friction force on the roller 122 under the gravity of the to-be-transported piece 50, when the pressing friction force on the roller 122 is greater than the frictional force between the inner ring of the first bearing 1219 and the support shaft 1211, the first bearing 1219 and the first sprocket 1215 will appear linear slip on the support shaft 1211, and at this time, the elastic member 12172 generates elastic pressure under the locking action of the locking member 12171, so that the elastic pressure of the elastic member 12172 presses the first friction plate 1216 towards the second friction plate 1218, so that the first bearing 1219 and the first sprocket 1215 are tightly attached between the first friction plate 1216 and the second friction plate 1218, and at this time, the rotating friction force generated by the first friction plate 1216 and the second friction plate 1218 tightly attached to the first bearing 1219 and the first sprocket 1215 is greater than the pressing friction force on the roller 122, so that the first sprocket 1215 can still drive the support shaft 1211 to rotate at this time, so that the support shaft 1211 drives the roller 122 to rotate to transport the tray 40 and the to-be-transported piece 50 thereon along the X-axis.

[0056] When the to-be-transported piece 50 is transported along the X-axis by each roller 122 to a machining station, the blocking assembly is started to block the tray 40 from continuing to move along the X-axis, so as to facilitate the machining operation on the to-be-transported piece 50 at the machining station; due to the blocking force of the blocking assembly on the tray 40, the pressing friction force of the tray 40 on the roller 122 continues to increase at this time, so that the rotating friction force generated by the first friction plate 1216 and the second friction plate 1218 tightly attached to the first bearing 1219 and the first sprocket 1215 is less than the pressing friction force on the roller 122, so that the first sprocket 1215 cannot drive the support shaft 1211 to rotate at this time, that is, the to-be-transported piece 50, the tray 40 and the roller 122 are all in a stopped state at this time, so as to ensure that there is no rolling friction between the tray 40 and the roller 122 at the machining station.

[0057] Further, as shown in FIG. 6, the first sprocket 1215 is provided with a plurality of first teeth 12151, and the support shaft 1211 is provided with a plurality of second teeth 12111, and the first teeth 12151 and the second teeth 12111 are in meshing engagement. Figure 1 and Figure 3As shown, the wheel body 121 further comprises a second bearing 1210, the outer ring of the second bearing 1210 is arranged in the support 11, the support shaft 1211 is arranged in the inner ring of the second bearing 1210, so as to realize the rotation connection of the support shaft 1211 in the support 11. Among them, the number of second bearings 1210 can be set to multiple, in the embodiment, as shown in Figure 3 Two second bearings 1210 are arranged, and the two second bearings 1210 are respectively located on the opposite sides of the roller 122, so as to better ensure the stability of the rotation connection of the support shaft 1211 in the support 11. Here, the specific number of the second bearing 1210 is not limited.

[0058] Specifically, as shown in Figure 3 and Figure 4 The support shaft 1211 is further provided with a plastic protrusion 12111, and the roller 122 is sleeved on the plastic protrusion 12111, so as to increase the friction between the roller 122 and the plastic protrusion 12111, ensure the installation stability of the roller 122 on the plastic protrusion 12111, and avoid the problem that the roller 122 is loose or even falls off from the support shaft 1211.

[0059] Further, as shown in Figure 1 and Figure 2 The roller conveying device further comprises a connecting shaft 60, the length of the connecting shaft 60 extends along the Y axis, the connecting shaft 60 is sleeved with an intermediate wheel at opposite ends along the Y axis, a conveying chain is connected between the intermediate wheel and the roller 122 on the same side, and a linkage chain 123 is connected between each roller 122 on the same side.

[0060] Specifically, the roller conveying device further comprises a driving assembly, the driving assembly is used for driving each first sprocket 1215 on the same side to rotate synchronously, ensuring that the rotation of each first sprocket 1215 is synchronous, and further ensuring that the conveying stability and reliability of each roller 122 to the tray 40 is high, and ensuring that the tray 40 does not deviate during conveying.

[0061] Specifically, as shown in Figure 1 and Figure 2 The driving assembly comprises a driving member 31 and a second sprocket 32; wherein the driving member 31 is arranged between the two supports 11; the second sprocket 32 is connected to the output shaft of the driving member 31, and the second sprocket 32 and each first sprocket 1215 on the same side are connected by a driving chain 33, so as to drive the second sprocket 32 to rotate by the driving member 31, so that the second sprocket 32 drives each first sprocket 1215 on the same side to rotate at the same time, thereby realizing the synchronous rotation of each roller 122 on the same side. In the embodiment, the driving member 31 can be a roller wire motor.

[0062] By setting a driving member 31, synchronous rotation of each roller 122 on the opposite sides along the Y axis can be realized, so that the structure is relatively simple, the cost is relatively low, and the stability of the conveying of the material tray 40 by each roller 122 is good.

[0063] Further, as shown in Figure 1 and Figure 2 , a support wheel 34 is arranged between the adjacent two rollers 122 along the Y axis, the support wheel 34 is rotationally arranged on the support 11 and located in the linkage chain 123, so as to provide a supporting action on the material tray 40 by each support wheel 34, and better ensure the stability of the material tray 40 during the entire conveying process; and a tension adjusting structure 35 is arranged between the second sprocket 32 and the first sprocket 1215, the tension adjusting structure 35 is used for adjusting the tension degree of the driving chain 33. The tension adjusting structure 35 in the embodiment can adopt the common tension adjusting structure in the prior art.

[0064] Specifically, as shown in Figure 1 , the blocking assembly includes a sensor 21 and a blocking member 22; the sensor 21 is arranged on the support 11, and is used for detecting the conveying position of the to-be-conveyed member 50 along the X axis; the blocking member 22 includes a blocking cylinder and a baffle, the blocking cylinder is in communication connection with the sensor 21, so that the blocking cylinder starts and stops according to the detection signal of the sensor 21; the fixed end of the blocking cylinder is arranged between the two supports 11, the driving end of the blocking cylinder is connected with the baffle, and the blocking cylinder is used for driving the baffle to move along the Z axis, so that the baffle can resist the material tray 40 along the Z axis upward, thereby realizing the blocking action on the material tray 40. The sensor 21 in the embodiment can be a photoelectric sensor 21.

[0065] Further, as shown in Figure 1 , the blocking member 22 is arranged at least two, each blocking member 22 is arranged along the Y axis, so that the material tray 40 can be blocked by the baffle of each blocking member 22 at the same time, and the blocking reliability and stability of the material tray 40 are ensured. In the embodiment, the blocking member 22 is arranged two. Here, the specific number of the blocking member 22 is not limited.

[0066] The specific working process of the roller conveying device in the embodiment is as follows:

[0067] First, when the material tray 40 is not placed on the roller 122, the driving member 31 drives the second sprocket 32 to rotate, and the second sprocket 32 drives each first sprocket 1215 on the same side to rotate through the driving chain 33. At this time, under the frictional force between the inner ring of the first bearing 1219 and the support shaft 1211, the first sprocket 1215 can drive the support shaft 1211 to rotate, and in turn drive the roller 122 on the support shaft 1211 to rotate. The rotating roller 122 drives each roller 122 on the other side to rotate through the transmission chain, the intermediate wheel and the connecting shaft 60, thereby realizing the synchronous rotation of each roller 122 on the opposite sides along the Y axis.

[0068] Then, when the material tray 40 with the to-be-transported member 50 is placed on each roller 122, at this time, the material tray 40 increases the pressing friction force on the roller 122 under the gravity of the to-be-transported member 50. When the pressing friction force on the roller 122 is greater than the frictional force between the inner ring of the first bearing 1219 and the support shaft 1211, the elastic pressure of the elastic member 12172 presses the first friction plate 1216 towards the second friction plate 1218, so that the rotating friction force generated by the first friction plate 1216 and the second friction plate 1218 abutting against the first bearing 1219 and the first sprocket 1215 is greater than the pressing friction force on the roller 122. At this time, the first sprocket 1215 can still drive the support shaft 1211 to rotate, so that the support shaft 1211 drives the roller 122 to rotate to transport the material tray 40 and the to-be-transported member 50 on it along the X axis.

[0069] After that, when the sensor 21 detects that the to-be-transported member 50 is transported to the machining station, the blocking cylinder is started to drive the baffle to move upwards along the Z axis to block the material tray 40, so as to facilitate the machining operation on the to-be-transported member 50 in the machining station. Due to the blocking force of the baffle on the material tray 40, the pressing friction force of the material tray 40 on the roller 122 continues to increase, so that the rotating friction force generated by the first friction plate 1216 and the second friction plate 1218 abutting against the first bearing 1219 and the first sprocket 1215 is less than the pressing friction force on the roller 122. At this time, the first sprocket 1215 cannot drive the support shaft 1211 to rotate, that is, the to-be-transported member 50, the material tray 40 and the roller 122 are all in a stopped state. The driving member 31 is always in a working state.

[0070] Finally, after the machining operation on the conveying piece 50 is completed in the machining station, the blocking cylinder drives the blocking plate to move downward along the Z axis to disengage from the tray 40, so as to eliminate the blocking force of the blocking plate on the tray 40, thereby reducing the pressing friction force of the tray 40 on the rollers 122, so that the rotational friction force generated by the first friction plate 1216 and the second friction plate 1218 tightly abutting against the first bearing 1219 and the first sprocket 1215 is greater than the pressing friction force received by the rollers 122, so that the first sprocket 1215 drives the support shaft 1211 to continue to rotate, that is, the conveying piece 50, the tray 40 and the rollers 122 are all in the conveying state at this time, so as to convey the conveying piece 50 along the X axis to the next machining station for machining through the rollers 122.

[0071] Wherein, since the driving piece 31 is always in the working state, when the blocking force of the blocking plate on the tray 40 is eliminated, the driving piece 31 drives the rollers 122 to instantaneously rotate through the first sprocket 1215, so that each roller 122 can immediately continue to convey the tray 40, thereby saving time and improving the conveying efficiency of the conveying piece 50.

[0072] The roller conveying device in the embodiment can make the first bearing 1219 and the first sprocket 1215 produce linear skidding when the tray 40 encounters a larger blocking force, so as to temporarily stop the rotation of the rotating roller 122, thereby reducing the dust generated between the roller 122 and the tray 40 due to rolling friction, maintaining the performance of the conveying piece 50, and protecting the machining environment.

[0073] The above is only a preferred embodiment of the present application, and for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the content of the specification should not be understood as limiting the present application.

Claims

1. A roller conveyor device, characterized in that The utility model relates to a kind of conveying assembly (10), two described conveying assembly (10) are oppositely provided along Y axis, the conveying assembly (10) includes support (11) and drive wheel component (12), the support (11) is spaced apart and is provided with several drive wheel component (12) along X axis, the drive wheel component (12) includes wheel body (121) and is arranged on the roller (122) of wheel body (121), each roller (122) is used to support and rotate conveying tray (40), X axis is parallel with the conveying direction of the tray (40); Blocking component is arranged between two support (11), the blocking component can block the tray (40) placed with to-be-conveyed piece (50) moves along X axis, so that the rotating friction generated by the wheel body (121) is less than the pressing friction force of the tray (40) received by the roller (122), so that the roller (122) does not rotate. The wheel body (121) includes:

2. The roller conveyor of claim 1, wherein, Supporting shaft (1211), first key (1212), second key (1213) and limiting boss (1214) are spaced apart on the supporting shaft (1211), and the roller (122) is sleeved on the supporting shaft (1211), and the supporting shaft (1211) is used to drive the roller (122) to rotate; First sprocket (1215) movably sleeved on the supporting shaft (1211), the first sprocket (1215) is located between the first key (1212) and the second key (1213), and the first sprocket (1215) can drive the supporting shaft (1211) to rotate; First friction plate (1216) is sleeved on the supporting shaft (1211) and located between the first key (1212) and the first sprocket (1215); Elastic limiting part (1217), one end of the elastic limiting part (1217) is connected to the end of the supporting shaft (1211) without the roller (122), and the other end is elastically abutted to the first friction plate (1216); Second friction plate (1218) is clamped on the second key (1213), and one end of the second friction plate (1218) away from the first friction plate (1216) is abutted to the limiting boss (1214). The wheel body (121) further includes:

3. The roller conveyor of claim 2, wherein, First bearing (1219), the supporting shaft (1211) movably penetrates the inner ring of the first bearing (1219), and the first sprocket (1215) is sleeved on the outer ring of the first bearing (1219). The elastic limiting part (1217) includes:

4. The roller conveyor of claim 2, wherein, Locking part (12171) is locked to the end of the supporting shaft (1211) without the roller (122); Elastic member (12172) is sleeved on the supporting shaft (1211), one end of the elastic member (12172) is abutted to the locking part (12171), and the other end of the elastic member (12172) is abutbed to the first friction plate (1216). The wheel body (121) further includes:

5. The roller conveyor of claim 2, wherein, ​ A second bearing (1210) is arranged in the bracket (11), and the support shaft (1211) is arranged in the inner ring of the second bearing (1210).

6. A roller conveyor as claimed in any one of claims 2 to 5, wherein, The roller conveying device further comprises: A connecting shaft (60) is sleeved with an intermediate wheel at opposite ends along the Y axis, and the intermediate wheels on the same side are connected with the roller (122) through a transmission chain.

7. The roller conveyor of any one of claims 2-5, wherein, The roller conveying device further comprises: A driving assembly is arranged for driving the first sprocket (1215) on the same side to rotate.

8. The roller conveyor of claim 7, wherein, The driving assembly comprises: A driving member (31) is arranged between the two brackets (11); A second sprocket (32) is connected to the output shaft of the driving member (31), and the second sprocket (32) is connected with the first sprocket (1215) on the same side through a driving chain (33).

9. The roller conveyor of any one of claims 1-5, wherein, The blocking assembly comprises: A sensor (21) is arranged on the bracket (11), and the sensor (21) is used for detecting the conveying position of the conveying object (50) along the X axis; A blocking member (22) comprises a blocking cylinder and a baffle, the blocking cylinder is in communication connection with the sensor (21), the fixed end of the blocking cylinder is arranged between the two brackets (11), the driving end of the blocking cylinder is connected with the baffle, and the blocking cylinder is used for driving the baffle to move along the Z axis, so that the baffle can resist the tray (40) upward along the Z axis.

10. The roller conveyor of claim 9, wherein, The blocking member (22) is provided with at least two, and each blocking member (22) is arranged along the Y axis.

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