Chain conveying device

Abstract

The utility model relates to the technical field of workshop conveyors, in particular to a chain conveying device. The chain conveying device comprises a trolley, an upstream conveying chain mechanism and a downstream conveying chain mechanism, the upstream conveying chain mechanism and the downstream conveying chain mechanism are arranged in the advancing direction of the trolley, an upstream mechanism matching push block and a downstream mechanism matching push block are arranged on the trolley, and an upstream mechanism push head used for pushing the upstream mechanism matching push block is arranged on a chain of the upstream conveying chain mechanism. A downstream mechanism pushing head used for pushing the downstream mechanism matched pushing block is arranged on a chain of the downstream conveying chain mechanism, and the downstream mechanism pushing head is provided with a connecting position used for pushing the downstream mechanism matched pushing block when the upstream mechanism pushing head is separated from the upstream mechanism matched pushing block in the moving stroke of the downstream mechanism pushing head. The trolley is directly transferred from the upstream conveying chain mechanism to the downstream conveying chain mechanism, close-range hinging can be achieved, the handover time is shortened, and the conveying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workshop conveyors, and particularly relates to a chain conveying device. Background Art

[0002] In an automobile painting workshop, a white body is carried by a trolley into the painting process stage, and the trolley moves on a conveying track driven by a chain conveyor. A vertical chain conveying system of a painting production line is disclosed in a Chinese invention patent with the authorization announcement number of CN110124907B. The chain conveying system includes a conveying slide rail and a transport trolley sliding on the conveying slide rail. The conveying slide rail constitutes a conveying track. A chain drive mechanism is arranged on one side outside the conveying slide rail. The chain drive mechanism is a conveying chain mechanism. The chain drive mechanism includes a support seat. Two vertically arranged sprockets are arranged at both ends of the support seat. An endless chain is arranged on the two sprockets. A motor drive mechanism connected to one of the sprockets is arranged outside one end of the support seat. A slidable frame and a tensioning mechanism connected to the frame are arranged at the other end of the support seat. The other sprocket is installed on the frame. Chain guide rails adapted to the upper and lower parts of the endless chain are arranged on the support seat. The chain guide rails extend along the extension direction of the conveying slide rail. The chain guide rails are parallel to the extension track line of the conveying slide rail. Guide grooves adapted to the upper and lower parts of the endless chain are respectively arranged at the top and bottom of the chain guide rails. The endless chain can be tensioned through the tensioning mechanism so that both ends of the endless chain are kept meshed with the sprockets. Chain push heads capable of being clamped with the transport trolley are arranged on the endless chain. A hanging block capable of being limited with the chain push head protrudes downward from one side of the transport trolley. The hanging block constitutes a push block. The chain push head at the top of the endless chain squeezes the hanging block on the transport trolley to make the transport trolley move.

[0003] The painting process involves many procedures, and each procedure has its corresponding conveying chain mechanism. When the trolley travels along the conveying track and enters the next procedure from the previous one, it is necessary to transfer the trolley from the conveying chain mechanism of the upstream procedure to the conveying chain mechanism of the downstream procedure. Currently, for the transition from the upstream conveying chain mechanism to the downstream conveying chain mechanism, a friction-driven conveying mechanism is adopted. A friction-driven conveying mechanism is arranged between the upstream conveying chain mechanism and the downstream conveying chain mechanism arranged at intervals. The chain push head of the upstream conveying chain mechanism pushes the push block on the trolley forward and moves the trolley onto the friction-driven conveying mechanism. The chain push head of the upstream conveying chain mechanism turns down and returns to disengage from the push block on the trolley. Then, the friction-driven conveying mechanism drives the trolley forward and moves the trolley to the downstream conveying chain mechanism. Then, the chain push head of the downstream conveying chain mechanism forms a pushing and matching with the push block on the trolley to drive the trolley to continue to travel. This handover method requires the use of a friction-driven conveying mechanism for intermediate transition, which affects the conveying efficiency. Moreover, in order to have space for arranging the friction-driven conveying mechanism, the length of the corresponding production line chamber is also relatively long, thereby reducing the conveying beat. Moreover, for the friction-driven conveying mechanism, an explosion-proof motor and a paint mist pollution prevention device need to be used, and the structure is relatively complex, increasing the cost and maintenance difficulty. Summary of the Invention

[0004] The purpose of the present invention is to provide a chain conveying device to solve the problem of relatively low structural conveying efficiency of the current chain conveying device that uses a friction-driven conveying mechanism to realize the handover and transition of the trolley from the upstream conveying chain mechanism to the downstream conveying chain mechanism.

[0005] The technical solution of the chain conveying device of the present invention is as follows:

[0006] A chain conveying device includes a trolley, an upstream conveying chain mechanism and a downstream conveying chain mechanism arranged along the traveling direction of the trolley. The trolley is provided with an upstream mechanism matching push block and a downstream mechanism matching push block. The chain of the upstream conveying chain mechanism is provided with an upstream mechanism push head for pushing the upstream mechanism matching push block. The chain of the downstream conveying chain mechanism is provided with a downstream mechanism push head for pushing the downstream mechanism matching push block. The downstream mechanism push head has a handover position on its moving stroke for pushing the downstream mechanism matching push block when the upstream mechanism push head disengages from the upstream mechanism matching push block.

[0007] Further, it is defined that the trolley travels from the back to the front. The upstream conveying chain mechanism and the downstream conveying chain mechanism are arranged in a staggered manner front and back. The front end of the upstream conveying chain mechanism has a staggered section whose projection in the left-right direction overlaps with the rear end of the downstream conveying chain mechanism.

[0008] Further, the upstream mechanism push head has a disengaging position on the staggered section when it disengages from the upstream mechanism matching push block on its moving stroke.

[0009] Further, the upstream mechanism mating push block and the downstream mechanism mating push block are directly opposite in the left - right direction.

[0010] Further, the chain conveying device includes a main conveying track for supporting the trolley, and the upstream conveying chain mechanism and the downstream conveying chain mechanism are respectively arranged on the left and right sides of the main conveying track.

[0011] Further, side conveying tracks for supporting the trolley are respectively arranged on the left and right sides of the main conveying track, and the chains of the upstream conveying chain mechanism and the downstream conveying chain mechanism are arranged between the left and right side conveying tracks in the left - right direction.

[0012] Further, the chain of the upstream conveying chain mechanism is the upstream mechanism chain. The upstream conveying chain mechanism includes an upstream mechanism sprocket and an upstream chain guide rail adapted to the upstream mechanism chain. The upstream chain guide rail has an upper track adapted to the part of the upstream mechanism chain that winds around the upper side of the upstream mechanism sprocket. One end of the upper track close to the downstream conveying chain mechanism is provided with a first ramp for disengaging the upstream mechanism push head from the trolley when the upstream mechanism push head passes by.

[0013] Further, the upstream mechanism push head includes a rear push claw and a front stop claw arranged at intervals along the traveling direction of the trolley. The rear push claw is used to push the trolley forward, and the front stop claw is used to cooperate with the rear push claw to limit the upstream mechanism mating push block. The height of the front stop claw is lower than that of the rear push claw. One end of the upper track close to the downstream conveying chain mechanism is provided with a second ramp on the rear side of the first ramp for disengaging the front stop claw from the trolley when the upstream mechanism push head passes by, and the first ramp is used to disengage the rear push claw from the trolley when the upstream mechanism push head passes by.

[0014] Further, the upper track has a horizontal section between the first ramp and the second ramp, and the upstream mechanism push head is on the horizontal section when the downstream mechanism push head is in the hand - over position.

[0015] Further, the downstream mechanism push head includes a rear push claw and a front stop claw arranged at intervals along the traveling direction of the trolley. The rear push claw is used to push the trolley forward, and the front stop claw is used to cooperate with the rear push claw to limit the downstream mechanism mating push block. The height of the front stop claw is lower than that of the rear push claw.

[0016] Beneficial effects: The utility model pioneeringly provides a chain conveying device for directly transferring a trolley from an upstream conveying chain mechanism to a downstream conveying chain mechanism. When the chain conveying device operates, the upstream conveying chain mechanism drives the trolley to move forward by the upstream mechanism push head of the upstream conveying chain mechanism pushing against the mating push block of the trolley. When it moves to the position where the upstream mechanism push head disengages from the mating push block of the upstream mechanism, the downstream mechanism push head of the downstream conveying chain mechanism pushes against the mating push block of the downstream mechanism on the trolley, and the downstream conveying chain mechanism drives the trolley to continue moving forward, enabling the trolley to be directly transferred from the upstream conveying chain mechanism to the downstream conveying chain mechanism. Short-distance articulation can be achieved, reducing the transfer time and being beneficial to improving the conveying efficiency. Description of the Drawings

[0017] Figure 1 Schematic diagram of the chain conveying device (the trolley is not shown) of the embodiment of the utility model;

[0018] Figure 2 Cross-sectional schematic diagram of the chain conveying device of the embodiment of the utility model at the driving wheel assembly of the upstream conveying chain mechanism;

[0019] Figure 3 Cross-sectional schematic diagram of the chain conveying device of the embodiment of the utility model at the tensioning wheel assembly of the downstream conveying chain mechanism;

[0020] Figure 4 Schematic diagram of the upstream mechanism push head of the chain conveying device of the embodiment of the utility model pushing the mating push block of the upstream mechanism to move;

[0021] Figure 5 Schematic diagram of the downstream mechanism push head of the chain conveying device of the embodiment of the utility model pushing the mating push block of the downstream mechanism to move;

[0022] Figure 6 Schematic diagram of the structure at the junction of the upstream conveying chain mechanism and the downstream conveying chain mechanism of the chain conveying device of the embodiment of the utility model;

[0023] Figure 7 For Figure 4 Schematic diagram of the cooperation between the upstream mechanism push head and the mating push block of the upstream mechanism in

[0024] In the figure:

[0025] 10. Base; 101. Main conveying track; 102. Side conveying track; 103. Upstream chain guide rail; 1031. First ramp; 1032. Second ramp; 1033. Horizontal section; 104. Downstream chain guide rail; 1041. Lifting ramp;

[0026] 20. Tensioning wheel assembly; 30. Driving wheel assembly; 40. Driving motor assembly;

[0027] 50. Upstream mechanism chain; 51. Upstream mechanism pusher; 511. Rear pusher claw of upstream pusher; 512. Front retaining claw of upstream pusher;

[0028] 60. Downstream mechanism chain; 61. Downstream mechanism pusher;

[0029] 70. Detection component for pusher of conveying chain; 80. Robot signal control component;

[0030] 90. Trolley; 91. Matching pusher block for upstream mechanism; 92. Matching pusher block for downstream mechanism. Detailed implementation mode

[0031] The utility model provides a chain conveying device for directly transferring a trolley from an upstream conveying chain mechanism to a downstream conveying chain mechanism. When the chain conveying device operates, the upstream conveying chain mechanism drives the trolley to move forward by pushing the matching pusher block of the upstream mechanism of the trolley through the upstream mechanism pusher of the upstream conveying chain mechanism. When it moves to the position where the upstream mechanism pusher disengages from the matching pusher block of the upstream mechanism, the downstream mechanism pusher of the downstream conveying chain mechanism pushes the matching pusher block of the downstream mechanism on the trolley, and the downstream conveying chain mechanism drives the trolley to continue moving forward, enabling the trolley to be directly transferred from the upstream conveying chain mechanism to the downstream conveying chain mechanism, realizing a short-distance hinge connection, reducing the transfer time, and being beneficial to improving the conveying efficiency.

[0032] An embodiment of the chain conveying device of the utility model:

[0033] As Figure 1 , Figure 2 , Figure 3 shown, the chain conveying device includes a base 10, a trolley 90, and an upstream conveying chain mechanism and a downstream conveying chain mechanism arranged along the traveling direction of the trolley 90. The upstream conveying chain mechanism and the downstream conveying chain mechanism have the same composition structure but different arrangement positions on the base 10. Both the upstream conveying chain mechanism and the downstream conveying chain mechanism include a chain, a tensioning wheel assembly 20, a driving wheel assembly 30, and a driving motor assembly 40. The chain of the upstream conveying chain mechanism is the upstream mechanism chain 50, and the chain of the downstream conveying chain mechanism is the downstream mechanism chain 60. The base 10 is provided with an upstream chain guide rail 103 for cooperating with the upstream mechanism chain 50 and a downstream chain guide rail 104 for cooperating with the downstream mechanism chain 60, so that the chain can move along the guide rail. The base 10 is provided with a main conveying track 101 and a side conveying track 102 extending in the front-rear direction. The main conveying track 101 and the side conveying track 102 are used to support the trolley 90 to move forward, and the trolley 90 moves forward from the rear to the front under the drive of the upstream conveying chain mechanism and the downstream conveying chain mechanism.

[0034] On the trolley 90, there are an upstream mechanism mating push block 91 and a downstream mechanism mating push block 92. On the upstream mechanism chain 50, there is an upstream mechanism push head 51 for pushing the upstream mechanism mating push block 91. On the downstream mechanism chain 60, there is a downstream mechanism push head 61 for pushing the downstream mechanism mating push block 92. The downstream mechanism push head 61 has a handover position on its moving stroke for pushing the downstream mechanism mating push block 92 when the upstream mechanism push head 51 disengages from the upstream mechanism mating push block 91. When the chain conveying device is running, the upstream mechanism chain 50 of the upstream conveying chain mechanism drives the upstream mechanism push head 51 forward. The upstream mechanism push head 51 pushes the upstream mechanism mating push block 91 of the trolley 90 to drive the trolley 90 forward. When it moves to the position where the upstream mechanism push head 51 disengages from the upstream mechanism mating push block 91, the downstream mechanism push head 61 of the downstream conveying chain mechanism pushes the downstream mechanism mating push block 92 on the trolley 90, and the downstream conveying chain mechanism drives the trolley 90 to continue moving forward, enabling the trolley 90 to directly transfer from the upstream conveying chain mechanism to the downstream conveying chain mechanism, achieving a short-distance hinge, reducing the handover time, and being beneficial to improving the conveying efficiency.

[0035] The upstream conveying chain mechanism and the downstream conveying chain mechanism are arranged staggered front and back. The front end of the upstream conveying chain mechanism has an overlapping section with the rear end of the downstream conveying chain mechanism in the left-right direction. The projections of the upstream mechanism chain 50 and the downstream mechanism chain 60 in the left-right direction have an overlapping part. The driving wheel assembly 30 of the upstream conveying chain mechanism is located on the front side of the tensioning wheel assembly 20 of the downstream conveying chain mechanism, making the upstream conveying chain mechanism and the downstream conveying chain mechanism staggered front and back, saving the layout space and facilitating the connection between the upstream conveying chain mechanism and the downstream conveying chain mechanism. The upstream mechanism push head 51 has a disengaging position on the overlapping section when it disengages from the upstream mechanism mating push block 91 on its moving stroke. When the upstream mechanism push head 51 is at the disengaging position, the downstream mechanism push head 61 is at the handover position. Using the overlapping part of the upstream conveying chain mechanism and the downstream conveying chain mechanism for handover is beneficial to the smooth transition of the handover and is convenient for adapting to the size of the trolley 90. The upstream mechanism mating push block 91 and the downstream mechanism mating push block 92 are of the same height, and the upstream mechanism mating push block 91 and the downstream mechanism mating push block 92 on the trolley 90 are directly opposite in the left-right direction, making the positions of the upstream mechanism push head 51 and the downstream mechanism push head 61 in the front-back direction the same when pushing the trolley 90, facilitating the maintenance of the relative position relationship between the push head and the push block and being beneficial to the positioning of the trolley 90.

[0036] The bottom of the frame of the trolley 90 is provided with a main support wheel and side support wheels. Side support wheels are respectively arranged on the left and right sides of the main support wheel. The height of the main support wheel is lower than that of the side support wheels. The main support wheel rolls and supports on the main conveying track 101. Side conveying tracks 102 for supporting the trolley 90 are respectively arranged on the left and right sides of the main conveying track 101. The side support wheels roll and support on the corresponding side conveying tracks 102. The side conveying tracks 102 are higher than the main conveying track 101. The main conveying track 101, the side conveying tracks 102, the upstream chain guide 103 and the downstream chain guide 104 are all arranged in the inner cavity of the base 10. The upstream conveying chain mechanism and the downstream conveying chain mechanism are respectively arranged on the left and right sides of the main conveying track 101, which is convenient for arranging the conveying chain mechanism by using the inner space of the base 10, and the structure is compact. The upstream mechanism chain 50 and the downstream mechanism chain 60 are arranged between the left and right side conveying tracks 102 in the left-right direction, which is beneficial to making full use of the inner space of the base 10 and adapting to the size of the trolley 90. The upstream mechanism cooperating push block 91 and the downstream mechanism cooperating push block 92 are respectively arranged on the left and right sides of the main support wheel of the trolley 90 to respectively correspond to and cooperate with the push heads on the upstream mechanism chain 50 and the downstream mechanism chain 60.

[0037] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 shown, the upstream mechanism push head 51 and the downstream mechanism push head 61 have the same structure. Combining Figure 7 the upstream mechanism push head 51 as an example to illustrate the structure of the push head, the upstream mechanism push head 51 includes a front base body and a rear base body installed on the upstream mechanism chain 50. An upstream push head front retaining claw 512 is provided on the front base body, and an upstream push head rear pushing claw 511 is provided on the rear base body. The upstream push head rear pushing claw 511 and the upstream push head front retaining claw 512 are arranged at intervals front and rear. The upstream push head rear pushing claw 511 is used to push the trolley 90 forward, and the upstream push head front retaining claw 512 is used to cooperate with the upstream push head rear pushing claw 511 to limit the upstream mechanism cooperating push block 91. The push heads of the upstream conveying chain mechanism and the downstream conveying chain mechanism both have a front retaining claw and a rear pushing claw. The height of the front retaining claw is lower than that of the rear pushing claw. After the push block is stuck between the front retaining claw and the rear pushing claw of the push head, the trolley 90 can be kept relatively fixed with the chain, which is convenient for ensuring the position of the trolley 90 when it stops.

[0038] The tension wheel of the tension wheel assembly 20 and the drive wheel of the drive wheel assembly 30 respectively constitute the sprockets of the conveyor chain mechanism. The chain is wound around the sprockets. The sprockets of the upstream conveyor chain mechanism are the upstream mechanism sprockets, and the sprockets of the downstream conveyor chain mechanism are the downstream mechanism sprockets. The sprockets are arranged vertically. The chain has an upper portion that bypasses the sprocket upward and a lower portion that bypasses the sprocket downward. The chain guide has an upper track that cooperates with the upper portion of the chain and a lower track that cooperates with the lower portion of the chain. The front end of the upstream chain guide 103 is close to the downstream conveyor chain mechanism, and the rear end of the downstream chain guide 104 is close to the upstream conveyor chain mechanism. The front end of the upstream chain guide 103 is provided with the drive wheel of the corresponding drive wheel assembly 30, and the rear end of the downstream chain guide 104 is provided with the tension wheel of the corresponding tension wheel assembly 20. Combined with Figure 3 As shown, when the trolley 90 is carried by the upstream conveyor chain mechanism and moves along the conveying track to the tension wheel at the rear end of the downstream chain guide 104 of the downstream conveyor chain mechanism, the downstream mechanism push head 61 and the downstream mechanism mating block 92 are not in contact. At this time, the upstream mechanism push head 51 still pushes the upstream mechanism mating block 91 to make the trolley 90 move forward. Combined with Figure 2 As shown, when the trolley 90 moves to the drive wheel at the front end of the upstream chain guide 103 of the upstream conveyor chain mechanism, the upstream mechanism push head 51 and the upstream mechanism mating block 91 are in a separated state. At this time, the downstream mechanism push head 61 pushes the downstream mechanism mating block 92 to make the trolley 90 move forward.

[0039] The front end of the upper track of the upstream chain guide 103 is provided with a first ramp 1031, a second ramp 1032 and a horizontal section 1033. The upper track of the upstream chain guide 103 includes an upstream main section located behind the second ramp 1032. The upstream main section, the second ramp 1032, the horizontal section 1033 and the first ramp 1031 are connected in sequence from back to front. The upstream main section extends linearly in the front-rear direction, the second ramp 1032 extends obliquely downward, the horizontal section 1033 extends linearly in the front-rear direction, and the first ramp 1031 extends obliquely downward. Combined with Figure 4 The cooperation process of the upstream mechanism push head 51 and the upstream mechanism mating block 91 will be described. On the movement trajectory of the upstream mechanism push head 51 Figure 4There are corresponding positions A1, A2, A3, A4, A5, and A6. When the upstream mechanism pusher 51 is at position A1, the upstream mechanism pusher 51 is at the upstream main body section of the upper track of the upstream chain guide 103. At this time, the upstream mechanism cooperating push block 91 is clamped between the front retaining claw and the rear pushing claw of the upstream mechanism pusher 51. As the upstream mechanism pusher 51 moves and passes through the second ramp 1032, the height of the upstream mechanism pusher 51 decreases. When the upstream mechanism pusher 51 is at position A2, the upstream mechanism pusher 51 is at the horizontal section 1033 of the upper track of the upstream chain guide 103. Since the height of the front retaining claw is relatively low, at this time, the front retaining claw disengages from the upstream mechanism cooperating push block 91, and the rear pushing claw continues to push the upstream mechanism cooperating push block 91. When the upstream mechanism pusher 51 moves along the horizontal section 1033 to position A3, the downstream conveying chain mechanism intervenes, and its downstream mechanism pusher 61 forms a pushing and matching with the downstream mechanism cooperating push block 92 of the trolley 90. When the upstream mechanism pusher 51 moves to position A4, the upstream mechanism pusher 51 is at the first ramp 1031 section, and the height of the upstream mechanism pusher 51 is reduced again by using the first ramp 1031 section, so that the rear pushing claw of the upstream mechanism pusher 51 disengages from the upstream mechanism cooperating push block 91. At this time, the downstream mechanism pusher 61 is correspondingly at the handover position, and the upstream conveying chain mechanism no longer pushes the trolley 90, but only relies on the downstream conveying chain mechanism to push the trolley 90 forward. As the upstream mechanism chain 50 operates, the upstream mechanism pusher 51 moves over the driving wheel of the corresponding driving wheel assembly 30 to position A5, and moves from position A5 to position A6 to reach the lower track main body of the upstream chain guide 103, and then performs a cyclic operation driven by the chain.

[0040] The rear end of the downstream chain guide 104 is provided with a lifting ramp 1041, and the lifting ramp 1041 extends obliquely upward from the rear to the front. The downstream chain guide 104 has a transition section located on the rear side of the lifting ramp 1041 and a downstream main body section located on the front side of the lifting ramp 1041. Combining Figure 5 To illustrate the cooperation process between the downstream mechanism pusher 61 and the downstream mechanism cooperating push block 92, on the movement trajectory of the downstream mechanism pusher 61 Figure 5There are corresponding positions B1, B2, B3, and B4. When the downstream mechanism push head 61 is in the B1 position, the downstream mechanism push head 61 is on the lower track body of the downstream chain guide 104; as the chain runs, the downstream mechanism push head 61 is driven to move to the B2 position, gradually approaching the tensioning wheel of the corresponding tensioning wheel assembly 20; after the downstream mechanism push head 61 flips over the tensioning wheel, it moves to the upper track of the downstream chain guide 104. When the downstream mechanism push head 61 is in the B3 position, the downstream mechanism push head 61 is in the transition section of the downstream chain guide 104. The B3 position of the downstream mechanism push head 61 corresponds to the A3 position of the upstream mechanism push head 51, that is, the upstream mechanism push head When 51 moves to the A3 position, the downstream mechanism push head 61 moves to the B3 position, and the rear push claw of the downstream mechanism push head 61 forms a push fit with the downstream mechanism matching push block 92 on the trolley 90. At this time, the front stop claw of the downstream mechanism push head 61 has not yet blocked the front side of the downstream mechanism matching push block 92; as the downstream mechanism push head 61 continues to move and passes through the lifting ramp 1041 to reach the B4 position, the height of the downstream mechanism push head 61 increases, and the front stop claw of the downstream mechanism push head 61 blocks the front side of the downstream mechanism matching push block 92, so that the downstream mechanism matching push block 92 is stuck between the rear push claw and the front stop claw of the downstream mechanism push head 61, keeping the trolley 90 in position, and then entering the next process.

[0041] The first ramp 1031 at the front end of the upstream chain guide 103 is used to facilitate the upstream mechanism push head 51 to be separated from the trolley 90 when the upstream mechanism push head 51 passes by, which is conducive to a smooth separation process. The second ramp 1032 and the first ramp 1031 are used to cooperate to make the front block and the rear block of the upstream mechanism push head 51 separate from the trolley 90 in sequence, which can avoid the front block of the upstream mechanism push head 51 from being stuck to the upstream mechanism matching push block 91 of the trolley 90 during the handover, which is safe and reliable. The upstream mechanism chain 50 and the downstream mechanism chain 60 have the same running speed. When the downstream mechanism push head 61 is in the handover position, the upstream mechanism push head 51 is on the horizontal section 1033. The upstream mechanism push head 51 moves on the horizontal section 1033 and continues to push the trolley 90, which is conducive to transition buffering of the handover process and ensuring stability. The lifting ramp 1041 is used to make the rear push claw and the front stop claw of the downstream mechanism push head 61 cooperate with the downstream mechanism matching push block 92 in turn, avoiding the front stop claw of the downstream mechanism push head 61 from colliding with the downstream mechanism matching push block 92 and being damaged, which is conducive to the safe and reliable handover process.

[0042] The chain conveyor device in this embodiment is used for the painting process and is arranged in the painting workshop. The driving motor assembly 40 is pulled out of the production line chamber by means of a universal drive shaft without considering explosion-proof issues, and the driving motor assembly 40 has dual motors, which can achieve the function of one in use and one in reserve, improving the reliability of the equipment. A conveying chain pusher detection assembly 70 and a robot signal control assembly 80 are also provided at the driving motor assembly 40. The conveying chain pusher detection assembly 70 detects the number of turns of the transmission gear of the driving motor assembly 40 through an encoder to detect the position of the pusher on the chain, and then uses the position information to trigger the robot beside the production line by the robot signal control assembly 80 to perform relevant actions.

[0043] In other embodiments, the upstream conveying chain mechanism and the downstream conveying chain mechanism can also be arranged at intervals in the front and back. At this time, the upstream mechanism mating blocks on the trolley and the downstream mechanism mating blocks are arranged at intervals in the front and back. The downstream mechanism mating block is located in front of the upstream mechanism mating block. The positions of the upstream mechanism mating block and the downstream mechanism mating block only need to meet the condition that when the upstream mechanism pusher disengages from the upstream mechanism mating block, the downstream mechanism pusher can push the downstream mechanism mating block.

[0044] In other embodiments, the disengagement position when the upstream mechanism pusher disengages from the upstream mechanism mating block can also be set before entering the staggered section. At this time, the upstream mechanism mating blocks and the downstream mechanism mating blocks on the trolley are arranged at intervals in the front and back. The downstream mechanism mating block is located in front of the upstream mechanism mating block. The positions of the upstream mechanism mating block and the downstream mechanism mating block only need to meet the condition that when the upstream mechanism pusher disengages from the upstream mechanism mating block, the downstream mechanism pusher can push the downstream mechanism mating block in front.

[0045] In other embodiments, the positions of the upstream mechanism mating block and the downstream mechanism mating block can also be staggered in the left-right direction.

[0046] In other embodiments, when space permits, both the upstream conveying chain mechanism and the downstream conveying chain mechanism can also be arranged on the same side of the main conveying track.

[0047] In other embodiments, the upper track of the upstream chain guide rail can also be provided without the first ramp, and the upstream mechanism pusher can directly bypass the driving wheel and turn downward to disengage from the upstream mechanism mating block of the trolley.

[0048] In other embodiments, the second ramp can also be omitted, and both the front retaining claw and the rear pusher claw of the upstream mechanism pusher can use the first ramp to reduce the height and disengage from the corresponding mating blocks.

[0049] In other embodiments, the running speeds of the chains of the upstream conveying chain mechanism and the downstream conveying chain mechanism can also be made different. When the running speed of the chain of the upstream conveying chain mechanism is less than that of the chain of the downstream conveying chain mechanism, when the pusher of the upstream mechanism disengages from the mating pusher of the upstream mechanism and the pusher of the downstream mechanism is at the handover position, the upstream conveying chain mechanism no longer pushes the trolley, but the trolley is driven forward by the downstream conveying chain mechanism with a faster running speed.

[0050] In other embodiments, the running speeds of the chains of the upstream conveying chain mechanism and the downstream conveying chain mechanism can also be made different. When the running speed of the chain of the upstream conveying chain mechanism is greater than that of the chain of the downstream conveying chain mechanism, the upper track of the upstream chain guide rail no longer has a horizontal section. When the pusher of the downstream mechanism pushes against the mating pusher of the downstream mechanism, the pusher of the upstream mechanism disengages from the mating pusher of the upstream mechanism at the same time. The upstream conveying chain mechanism no longer pushes the trolley, but the trolley is driven forward by the downstream conveying chain mechanism.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A chain conveyor device, characterized in that, It includes a trolley, an upstream conveying chain mechanism and a downstream conveying chain mechanism arranged along the traveling direction of the trolley. There are an upstream mechanism mating push block and a downstream mechanism mating push block on the trolley. An upstream mechanism push head for pushing the upstream mechanism mating push block is provided on the chain of the upstream conveying chain mechanism, and a downstream mechanism push head for pushing the downstream mechanism mating push block is provided on the chain of the downstream conveying chain mechanism. The downstream mechanism push head has a handover position on its moving stroke for pushing the downstream mechanism mating push block when the upstream mechanism push head disengages from the upstream mechanism mating push block.

2. The chain conveyor device according to claim 1, characterized in that, It is defined that the trolley travels from the rear to the front. The upstream conveying chain mechanism and the downstream conveying chain mechanism are arranged in a front-back staggered manner, and the front end of the upstream conveying chain mechanism has a staggered section whose projection in the left-right direction overlaps with the rear end of the downstream conveying chain mechanism.

3. The chain conveyor device according to claim 2, characterized in that, The upstream mechanism push head has a disengaging position on the staggered section when it disengages from the upstream mechanism mating push block on its moving stroke.

4. The chain conveyor device according to claim 3, characterized in that The upstream mechanism mating push block and the downstream mechanism mating push block are directly opposite in the left-right direction.

5. The chain conveyor device according to any one of claims 2-4, characterized in that, The chain conveying device includes a main conveying track for supporting the trolley, and the upstream conveying chain mechanism and the downstream conveying chain mechanism are respectively arranged on the left and right sides of the main conveying track.

6. The chain conveyor device according to claim 5, characterized in that, Side conveying tracks for supporting the trolley are respectively provided on the left and right sides of the main conveying track, and the chains of the upstream conveying chain mechanism and the downstream conveying chain mechanism are arranged between the left and right side conveying tracks in the left-right direction.

7. The chain conveyor device according to any one of claims 1-4, characterized in that, The chain of the upstream conveying chain mechanism is the upstream mechanism chain. The upstream conveying chain mechanism includes an upstream mechanism sprocket and an upstream chain guide rail adapted to the upstream mechanism chain. The upstream chain guide rail has an upper track adapted to the part of the upstream mechanism chain wound around the upper side of the upstream mechanism sprocket. One end of the upper track close to the downstream conveying chain mechanism is provided with a first ramp for disengaging the upstream mechanism push head from the trolley when the upstream mechanism push head passes by.

8. The chain conveyor device according to claim 7, characterized in that, The upstream mechanism push head includes a rear push claw and a front stop claw arranged at intervals along the traveling direction of the trolley. The rear push claw is used for pushing the trolley to move forward, and the front stop claw is used for cooperating with the rear push claw to limit the upstream mechanism mating push block. The height of the front stop claw is lower than that of the rear push claw. A second ramp is provided on the rear side of the first ramp at one end of the upper track close to the downstream conveying chain mechanism for disengaging the front stop claw from the trolley when the upstream mechanism push head passes by, and the first ramp is used for disengaging the rear push claw from the trolley when the upstream mechanism push head passes by.

9. The chain conveyor device according to claim 8, characterized in that, The upper track has a horizontal section between the first ramp and the second ramp, and the upstream mechanism push head is on the horizontal section when the downstream mechanism push head is at the handover position.

10. The chain conveyor device according to any one of claims 1-4, characterized in that, The downstream mechanism push head includes a rear push claw and a front stop claw arranged at intervals along the traveling direction of the trolley. The rear push claw is used for pushing the trolley to move forward, and the front stop claw is used for cooperating with the rear push claw to limit the downstream mechanism mating push block. The height of the front stop claw is lower than that of the rear push claw.

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