Multi-station circulating and intermittent motion RGV carrier

Abstract

The application discloses a multi-station circulating and intermittent motion RGV carrier and belongs to the technical field of intelligent parking equipment. The application comprises a circulating transmission mechanism, a vehicle carrying plate and a wheel rail, wherein the circulating transmission mechanism comprises a driving wheel and a driven wheel which are connected through a horizontally arranged circulating chain transmission type link, further comprises a steering wheel for steering the circulating chain, and N pairs of guide wheels for guiding the left chain segment of the circulating chain into N levels; the upper surface of the circulating chain is fixedly connected with the horizontally arranged upper rollers through connecting shafts; the upper rollers are inserted into the sliding grooves in the bottom of the sliding blocks above the upper rollers; the vehicle carrying plate is fixedly connected to the upper surface of the sliding block; the vehicle carrying plate is rollingly connected to the parallel arranged double wheel rails on the two sides of the vehicle carrying plate through the support wheels fixedly connected to the two sides of the vehicle carrying plate, and the outer sides of the wheel rails are provided with parking spaces. When the circulating chain drives the upper rollers to move transversely, the upper rollers roll in the sliding grooves, and at this time, the sliding blocks remain stationary, so that enough time is provided for the motor vehicles to get on and off without frequently starting and stopping the motor.

Description

Technical Field

[0001] This invention relates to the field of intelligent parking equipment technology, and more specifically, to an RGV transport vehicle with multiple workstations and intermittent movement. Background Technology

[0002] RGV is an abbreviation for Rail Guided Vehicle, also known as a rail shuttle. RGV vehicles can be used in warehouses with various high-density storage methods. The vehicle aisles can be designed to be of any length, which can increase the overall storage capacity of the warehouse.

[0003] With the increasing number of cars on the road, but the decreasing number of parking spaces, we need to accommodate more vehicles within the same area. This necessitates increasing the number of floors in parking garages to meet the growing parking demand. Among various types of parking garages, mechanical parking equipment offers advantages such as wide variety, strong site adaptability, low cost, small footprint, and high floor area ratio, making it the most direct and effective means of solving the "urban parking difficulty" problem.

[0004] Currently, when RGVs are used in intelligent parking systems, their automatic scheduling is not intelligent enough. The coordination between circulating and shuttle RGVs complicates the scheduling of production line logistics and cannot achieve seamless connection between circulating and shuttle RGVs within the same parking garage. Existing RGV automated parking systems require a moving frame to move steel cables during lateral movement of parking spaces, thus allowing the vehicle platform to move laterally. Parking garages using this principle experience swaying and instability of the vehicle platform during lateral movement, which can easily create safety hazards.

[0005] A search revealed Chinese Patent Publication No. CN108678464A; Publication Date: October 19, 2018; which discloses a stable lifting and lateral sliding type of automated parking system. This lifting and lateral sliding type of automated parking system includes a lateral sliding frame set on a steel frame structure, a car platform located below the lateral sliding frame and connected to the lifting transmission mechanism via steel wire ropes, and a lifting anti-sway mechanism set on the same side at the top and bottom between the lateral sliding frame and the car platform to limit the upward movement of the car platform, as well as a lifting anti-sway mechanism set on one side on the longitudinal beam of the lateral sliding frame and retractably connected to the car platform on the other side. Although this application can reduce the sway amplitude of the car platform during the lifting process and increase the stability of the car platform during the lifting process by setting the lifting anti-sway mechanism, it still cannot effectively overcome the defect of lateral movement, and the structure is complex with low lateral transmission efficiency. Summary of the Invention

[0006] 1. The technical problem that the invention aims to solve

[0007] The purpose of this invention is to address the safety hazard caused by the instability of the vehicle platform during lateral transfer of vehicles in existing RGV transport vehicles in garages. This invention proposes a multi-station, cyclical, and intermittently moving RGV transport vehicle. It fully utilizes the cyclical rotation characteristic of a horizontally placed circulating chain, and through the coordinated action of the driving wheel, driven wheel, steering wheel, and guide wheel that work in conjunction with the rotating circulating chain, the upper roller fixed to the circulating chain acts as the drive wheel to move the vehicle on the platform to any horizontal parking position. This eliminates the need for steel cables, ensures stable vehicle transport, has a simple structure, and high lateral transfer efficiency. Furthermore, when the circulating chain drives the slider to move laterally, the slider remains stationary, providing sufficient time for loading and unloading without frequent motor starts and stops. The structure is simple and the transfer efficiency is high.

[0008] 2. Technical Solution

[0009] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0010] This invention discloses a multi-station cyclic and intermittent motion RGV transport vehicle, comprising a cyclic transmission mechanism, a vehicle platform, and wheel rails. The cyclic transmission mechanism includes a driving wheel and a driven wheel connected by a horizontally placed cyclic chain, a steering wheel for turning the cyclic chain, and N pairs of guide wheels for guiding the left segment of the cyclic chain into N stages. If there are three stages, three pairs of guide wheels are required; theoretically, any number of guide wheels can be used to guide the left chain into any number of stages. A horizontally placed upper roller is fixedly connected to the upper surface of the cyclic chain via a connecting shaft. The upper roller is inserted into the rectangular groove at the bottom of the slider above it, and the upper roller is the drive wheel. The car carrier plate is fixedly connected to the upper surface of the slider. The car carrier plate is tumbled on the parallel double-wheel rails on both sides of the car carrier plate through support wheels fixedly connected to its two sides. The outer side of the wheel rails is provided with parking spaces. In actual use, the motor drives the drive wheel and the driven wheel, usually the drive sprocket and the driven sprocket, to circulate the circulating chain under tension. The upper roller on the circulating chain then acts as the drive wheel to drive the car carrier plate on the slider, and the vehicle on the car carrier plate moves horizontally. By carrying the vehicle on the car carrier plate, and cooperating with the upper roller, interference in any direction of the slider in the horizontal state can be avoided. When the circulating chain drives the upper roller to move laterally, the upper roller rolls in the groove. At this time, the slider remains stationary. If there are 3 stages, there are 3 short intermittent pauses. When the cycle returns, there is 1 long intermittent pause. This provides sufficient time for loading and unloading without the need for frequent motor starts and stops.

[0011] Furthermore, the parking spaces are symmetrically arranged in multiple pairs, distributed within the length of the circulation area of ​​the circulating transmission mechanism; there is only one upper roller. Since the vehicle is large, larger than the width of both sides of the circulating chain, multiple vehicles driven by upper rollers are prone to interference. By using only one upper roller to drive a single vehicle, interference is avoided; the steering wheels are left and right steering wheels symmetrically arranged on the inner side of the circulating chain; the guide wheels are inner and outer guide wheels symmetrically arranged in pairs on the inner and outer sides of the left chain. There can be multiple pairs of inner and outer guide wheels. If N intermittent stops are required in the direction of vehicle movement, (N-1) pairs of inner and outer guide wheels are needed. Of course, the left and right steering wheels can also be understood as the last pair of inner and outer guide wheels.

[0012] Furthermore, the circulating chain is laid flat on the support platform to protect the chain; the motor driving the drive wheel, as well as the support base supporting the driven wheel, steering wheel and guide wheel, are all fixed below the support platform, and the height of the motor and the support base is as consistent as possible.

[0013] Furthermore, the parallel double-wheel rails are fixedly connected by connecting rods. There can be multiple parallel connecting rods, which not only serve as a connection but also as a support, supporting the chain under the support platform. The support platform is an annular groove that adapts to the rotation area of ​​the circulating chain, allowing the circulating chain to rotate within a limited area and providing a certain degree of protection for the chain.

[0014] Furthermore, the upper roller is fixedly connected to the upper surface of one of the links of the circulating chain. If it is fixed between two links, interference will occur when the circulating chain moves to the sprocket, resulting in a jamming situation. This achieves the technical effect of avoiding jamming. The width of the groove is adapted to the diameter of the upper roller, allowing the upper roller to slide within a limited area, avoiding interference forces while protecting the upper roller.

[0015] Furthermore, the upper roller is tightly fitted or keyed onto the connecting shaft. Since the upper roller needs to bear weight, the tight fit or keyed connection can prevent the upper roller from coming off the shaft. The lower roller is fixedly connected to the lower surface of the circulating chain, which changes sliding friction into rolling friction. This not only improves work efficiency but also supports the chain.

[0016] Furthermore, both the upper and lower rollers are bearings, which generate less rolling friction compared to other types, such as rubber or plastic rollers. The diameter of the lower roller is matched to the width of the annular groove, further improving work efficiency.

[0017] Furthermore, the bearing sleeve is fitted with a shaft retaining ring, and flat bearings need to be made even more careful to prevent the intrusion of impurities.

[0018] Furthermore, the vertical cross-section of the chute is "T" shaped to prevent the slider from dislodging when the vehicle is unloaded.

[0019] Furthermore, by placing motor vehicles on a carrier plate for a continuous, cyclical transfer, they can be transferred to any parking space outside the cyclical movement area generated by the circulating chain.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0022] (1) The multi-station cyclic and intermittent motion RGV transport vehicle of the present invention can circulate the circulating chain in a tensioned state under the action of the driving sprocket, driven sprocket, steering wheel and guide wheel driven by the motor. The upper roller on the circulating chain acts as the driving wheel to drive the motor vehicle on the slider to rotate in a horizontal state; the motor vehicle can be transferred to any parking position in the cyclic motion area generated by the circulating chain.

[0023] (2) The multi-station cyclic and intermittent motion RGV transport vehicle of the present invention has N pairs of guide wheels that guide the left chain into N stages. The left steering wheel and the right steering wheel are regarded as the guide wheels at the farthest end of the circulating chain. When the upper roller moves laterally, the upper roller rolls laterally in the slide groove. At this time, the slider remains stationary. If there are N stages, there are N short intermittent pauses. When returning in a cycle, there is one long intermittent pause. The motor does not need to be frequently started and stopped to provide enough time for getting on and off the vehicle. Theoretically speaking, under the premise of uniform speed movement of the circulating chain, the time of the long intermittent pause is the sum of the times of the N short intermittent pauses.

[0024] (3) The multi-station cyclic and intermittent motion RGV transport vehicle of the present invention, when driven by a single upper roller, drives a single slider to rotate, thereby avoiding interference between sliders;

[0025] (4) The multi-station cyclic and intermittent motion RGV transport vehicle of the present invention is adapted to the support platform of the rotating area of ​​the circulating chain, so that the circulating chain can rotate within a limited area and play a certain protective role for the chain.

[0026] (5) The RGV transport vehicle with multi-station cyclic and intermittent motion of the present invention has a lower roller fixedly connected to the lower surface of the circulating chain, which changes the sliding friction into rolling friction, thereby improving work efficiency and supporting the chain.

[0027] (6) The multi-station cyclic and intermittent motion RGV transport vehicle of the present invention, under the synergistic effect of the cyclic motion of the circulating chain, the upper roller can cancel interference and the slider can carry the motor vehicle, is applied to the flow of motor vehicles in the horizontal state, forming an assembly line operation, and is transferred to any parking position in the horizontal direction. The flow is smooth, the structure is simple and the transfer efficiency is high. Attached Figure Description

[0028] Figure 1 This is a top view of the RGV transport vehicle with multi-station cyclic and intermittent motion according to the present invention;

[0029] Figure 2 This is a side view of the RGV transport vehicle with multi-station cyclic and intermittent motion according to the present invention.

[0030] Figure 3 This is a top view of the support platform in this invention;

[0031] Figure 4 This is an enlarged schematic diagram of the upper roller structure in this invention;

[0032] Figure 5 for Figure 4 A schematic diagram of the side view structure;

[0033] Figure 6 This is a schematic diagram of the structure in which the upper roller is fixed to a single link in this invention.

[0034] Figure 7 for Figure 6 Side view sectional view;

[0035] Figure 8 for Figure 7 Sectional view along axis AA;

[0036] Figure 9 This is a perspective view of the link portion in the present invention;

[0037] Figure 10 This is a schematic diagram of the longitudinal section structure of the slider in this invention;

[0038] Figure 11 This is a side view schematic diagram of the slider structure in the invention;

[0039] Figure 12 A top view of the RGV transport vehicle with multi-station cyclic and intermittent motion according to Embodiment 6 of the present invention.

[0040] The labels in the schematic diagram are as follows: 1. Circulating transmission mechanism; 2. Car platform; 3. Wheel and rail; 4. Lower roller; 5. Car position; 6. Connecting rod; 7. Support platform; 8. Connecting shaft; 11. Circulating chain; 12. Upper roller; 13. Left steering wheel; 14. Right steering wheel; 15. Driving wheel; 16. Driven wheel; 17. Inner guide wheel; 18. Slider; 19. Outer guide wheel; 20. Motor; 21. Support wheel; 22. Support; 100. Chain link; 101. Sliding joint connecting piece; 102. Sliding joint connecting rod; 103. Cotter pin; 121. Shaft retaining ring; 181. Slide groove; 200. Intermittent section I; 300. Intermittent section II; 400. Intermittent section III; 500. Long intermittent section. Detailed Implementation

[0041] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0042] Example 1

[0043] This embodiment of an RGV transport vehicle with multi-station cyclic and intermittent motion includes a cyclic transmission mechanism 1, a vehicle platform 2, and wheel rails 3. The cyclic transmission mechanism 1 includes a driving wheel 15 and a driven wheel 16 connected by a horizontally placed cyclic chain 11, a steering wheel for turning the cyclic chain 11, and N pairs of guide wheels for dividing the left segment of the cyclic chain 11 into N stages (3 pairs of guide wheels are required if there are 3 stages). A horizontally placed upper roller 12 is fixedly connected to the upper surface of the cyclic chain 11 via a connecting shaft 3. The upper roller 12 is inserted into... The upper roller 12 serves as the drive wheel within the rectangular groove 181 at the bottom of the upper slider 18. The vehicle platform 2 is fixedly connected to the upper surface of the slider 18. The vehicle platform 2 is rotatably connected to the parallel double-wheel rails 3 on both sides of the vehicle platform 2 via support wheels 21 fixedly connected to its two sides. The support wheels 21 are generally a pair symmetrically arranged on each side, bearing the entire weight of the vehicle and the vehicle platform 2. The circulating chain 1 and the upper roller 12 do not bear the weight of the vehicle and the vehicle platform 2. The upper roller 12 drives the vehicle platform 2 to perform horizontal cyclic movement. Parking spaces 5 are provided on the outer side of the wheel rails 3. Multiple parking spaces 5 are symmetrically arranged and distributed within the length of the circulating area of ​​the circulating transmission mechanism 1.

[0044] In practical use, the motor drives the driving wheel 15 and the driven wheel 16, typically a driving sprocket and a driven sprocket, and also drives the steering wheel and guide wheel, causing the circulating chain 11 to circulate under tension. The upper roller 12 on the circulating chain 11 then acts as a drive wheel, driving the vehicle carrier plate 2 on the slider 18, and the vehicle on the vehicle carrier plate 2 to rotate horizontally. The vehicle carrier plate 2 carries the vehicle. When the circulating chain 11 drives the upper roller 12 to move laterally, the upper roller 12 rolls within the groove 181, while the slider 18 remains stationary. Figure 1As shown, when N pairs of guide wheels are 3, there are 3 segments, resulting in 3 short intermittent pauses: segment I (intermittent pause II 200), segment III (intermittent pause III 300), and segment IV 400. Each intermittent pause corresponds to two symmetrical positions 5 on the outer side of the corresponding symmetrical circulating chain 11. At the closest end, shown in the diagram, is the lower end of the circulating chain 11, which is a long intermittent pause 500. The return cycle consists of one long intermittent pause, providing sufficient time for boarding and alighting without frequent motor starts and stops. Theoretically, under the premise of uniform speed movement of the circulating chain 11, the time of one long intermittent pause is the sum of the times of N short intermittent pauses. The times of the short intermittent pauses are not necessarily the same and depend on the length of the segments.

[0045] Example 2

[0046] The RGV transport vehicle with multi-station cyclic and intermittent movement in this embodiment has the same basic structure as Embodiment 1, but the difference or improvement is that: there is only one upper roller. The vehicle volume is relatively large, larger than the width of both sides of the circulating chain 11. Multiple upper rollers 12 driving the vehicle can easily cause interference. By using only one upper roller, a single vehicle is driven to rotate, thus avoiding interference. The steering wheels are the left steering wheel 13 and the right steering wheel 14, which are symmetrically arranged on the inner side of the circulating chain 11. The guide wheels are the inner guide wheel 17 and the outer guide wheel 19, which are symmetrically arranged in pairs on the inner and outer sides of the left chain. There can be multiple pairs of inner guide wheels 17 and outer guide wheels 19. If N intermittent stops are required in the direction of vehicle movement, (N-1) pairs of inner guide wheels 17 and outer guide wheels 19 are needed. That is, if 3 intermittent stops are required, corresponding to 3 pairs of parking spaces, 2 pairs of inner guide wheels 17 and outer guide wheels 19 are needed. Of course, the left steering wheel 13 and the right steering wheel 14 can also be understood as the last pair of inner guide wheels 17 and outer guide wheels 19. The circulating chain 11 is laid flat on the support platform 7, serving as a protective chain. The motor 20 driving the drive wheel 15, and the support platform 22 supporting the driven wheel 16, steering wheel, and guide wheel are all fixed below the support platform 7. The height of the motor and the support platform are as consistent as possible. Of course, if it is necessary to transfer the motor vehicle to a certain height, the height of some supports 22 can be greater than that of the motor 17. The upper roller 12 and the slider 18 are both single. The slider 18 carries the motor vehicle and works in conjunction with the upper roller 12. The upper roller 12 can rotate at any angle in the horizontal direction, eliminating interference. During vertical movement, the upper roller 12 drives the slider 18 to move in a straight line, while the slider 18 remains stationary.

[0047] The application of the multi-station cyclic and intermittently moving RGV transport vehicle in this embodiment involves the following specific steps:

[0048] S1. Stop: When the circulating chain 11 drives the slider 18 and the vehicle platform 2 to run in the long intermittent section 500, that is... Figure 1 When the vehicle reaches the bottom as shown, place it on the vehicle carrier 2.

[0049] S2. Disembarking: When the circulating chain 11 drives the vehicle platform 2 to the I interval 200, the first vehicle enters the first row of garages 5; when the vehicle platform 2 moves to the II interval 300, the second vehicle enters the second row of garages 5; when the vehicle platform 2 moves to the III interval 300, the third vehicle enters the third row of garages 5. Vehicles that have not yet entered the garage return to the long interval 500 with the circulating chain 11.

[0050] S3. Cycle: Repeat the above steps to transfer the motor vehicle to the garage corresponding to Interval I 200, Interval II 300 and Interval III 300 respectively. When there are 3 pairs of inner guide wheels 17 and outer guide wheels 19, it can also be transferred to Interval IV, and so on. Any number of pairs can be set as needed.

[0051] Of course, a motor vehicle can also be placed on the vehicle carrier 2 alone and parked in any parking space 5 as the circulating chain 11 runs; or at each interval, while parking down from one side of the vehicle carrier 2, the vehicle can be loaded from the other side of the vehicle carrier 2 and transferred to other parking spaces 5 or the initial parking space before leaving the garage.

[0052] The RGV transport vehicle with multi-station cyclic and intermittent movement in this embodiment, with the cyclic movement of the circulating chain 11, the upper roller 12 which can cancel interference, the slider 18 which can carry the vehicle, and the steering wheel and guide wheel guiding, is applied to the assembly line transfer of vehicles. It can be transferred to any parking position 5 in the horizontal direction. The transfer is smooth, the structure is simple, the transfer efficiency is high, and there is no need to frequently start the motor 20 to achieve sufficient time for loading and unloading during the intermittent period.

[0053] Example 3

[0054] The multi-station cyclic and intermittently moving RGV transport vehicle in this embodiment has the same basic structure as in embodiment 2, with the following differences or improvements: Figure 3 As shown, the support platform 7 is an annular groove adapted to the rotation area of ​​the circulating chain 11, allowing the circulating chain 11 to rotate within a limited area, thus providing a certain degree of protection for the chain. Figure 5 , 6 As shown in Figures 7, 8, and 9, the upper roller 12 is fixedly connected to the upper surface of one of the links 100 of the circulating chain 11. If it is fixed between two links 100, interference will occur when the circulating chain 11 moves to the arc-shaped area of ​​the driving or driven sprocket, resulting in wheel jamming. This achieves the technical effect of avoiding wheel jamming. The structure of the link 100 is existing technology, such as... Figure 8 , 9 As shown in Figure 10, it is composed of two hinged connecting pieces 101 and two hinged connecting rods 102 connected to each other, and the links 100 are connected to each other by a cotter pin 103.

[0055] Example 4

[0056] The multi-station cyclic and intermittently moving RGV transport vehicle of this embodiment has the same basic structure as Embodiment 3, with the difference or improvement being that the upper roller 12 is tightly fitted or keyed to the connecting shaft 3. Since the upper roller 12 needs to bear weight, the tight fit or keyed connection prevents the upper roller 12 from detaching from the shaft under load. The upper roller 12 is preferably a bearing upper roller, as bearings generate the least rolling friction compared to other upper rollers, such as rubber wheels or plastic wheels. Figure 4 , 7 As shown in Figure 8, a shaft retaining ring 21 is fitted onto the bearing sleeve of the bearing. For horizontally mounted bearings, it is even more important to prevent the intrusion of impurities. Figure 1 , 10 As shown in Figure 11, the bottom of the slider 18 is provided with a groove 181 that is adapted to the diameter of the upper roller 12, so that the upper roller 12 can slide within a limited area, avoiding interference forces while protecting the upper roller 12.

[0057] Example 5

[0058] The multi-station cyclic and intermittently moving RGV transport vehicle of this embodiment has the same basic structure as Embodiment 4, with the difference or improvement being that the bearing is embedded in the slider 18 above the bearing. The slider 18 carries the vehicle and works in conjunction with the bearing to avoid interference in any direction in the horizontal state. More importantly, when the slider 18 is driven by the circulating chain 11 in a linear motion, the bearing normally does not move in the groove 181 of the slider 18. When it changes to an arc motion to drive the vehicle, that is, when the bearing moves to the semi-circular area at both ends of the circulating chain 11, the bearing moves in the groove 181 to transmit the driving force of the circulating chain 11. Figure 10 , 11 As shown, the groove 181 is rectangular in shape with a T-shaped vertical cross-section. When the upper roller 12 requires a large operating area, such as when the length of the vehicle is greater than the width of the circulating chain 11, it is designed to be square. The T-shaped vertical cross-section prevents the slider 18 from dislodging. A lower roller 4 is fixedly connected to the lower surface of the circulating chain 11. The lower roller 4 can be placed horizontally or vertically. When horizontal, it rolls on the inner wall of the support platform 7; when vertical, it rolls on the surface of the support platform 7. This transforms sliding friction into rolling friction, improving work efficiency while also supporting the chain. The diameter of the lower roller 4 is matched to the width of the annular groove, further improving work efficiency.

[0059] Example 6

[0060] The multi-station cyclic and intermittently moving RGV transport vehicle in this embodiment has the same basic structure as in embodiment 5, with the following differences or improvements: Figure 12 As shown, one inner guide wheel 17 of intermittent segment 200 can be omitted. That is, the drive wheel 15 can also serve the role of the inner guide wheel 17 of intermittent segment 200, providing guidance without affecting the cyclic rotation of the circulating chain 11. Moreover, in specific implementations, one parking space 5 can be selected from multiple parking spaces 5 as a vehicle parking space as needed. Generally, a parking space 5 near the turning area of ​​the circulating chain 11 is selected as the vehicle parking space, serving as the start and end point for vehicle entry and exit from the parking space.

[0061] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A multi-station cyclic and intermittent motion RGV transport vehicle, characterized in that: The system includes a circulating transmission mechanism (1), a vehicle platform (2), and wheel rails (3), wherein: the circulating transmission mechanism (1) includes a driving wheel (15) and a driven wheel (16) connected by a horizontally placed circulating chain (11), a steering wheel that turns the circulating chain (11), and N pairs of guide wheels that guide the left chain of the circulating chain (11) into N stages; the upper surface of the circulating chain (11) is fixedly connected to a horizontally placed upper roller (12) by a connecting shaft (8); the upper roller (12) is inserted into a rectangular groove (181) at the bottom of the slider (18) above it, and the upper roller (12) is a drive wheel; the vehicle platform (2) is fixedly connected to the upper surface of the slider (18); the vehicle platform (2) is tumbled on the parallel double wheel rails (3) on both sides of the vehicle platform (2) by support wheels (21) fixedly connected to both sides of the vehicle platform (2), and a vehicle position (5) is provided on the outer side of each wheel rail (3); The parking spaces (5) are multiple symmetrically arranged and distributed within the length of the circulation area of ​​the circulation transmission mechanism (1); the upper roller (12) is one; the steering wheels are the left steering wheel (13) and the right steering wheel (14) symmetrically arranged on the inner side of the circulation chain (11); the guide wheels are the inner guide wheel (17) and the outer guide wheel (19) symmetrically arranged on the inner and outer sides of the left chain. The circulating chain (11) is laid flat on the support platform (7); the motor (20) that drives the driving wheel (15), and the support (22) that supports the driven wheel (16), steering wheel and guide wheel are all fixed below the support platform (7); the vertical section of the chute (181) is "T" shaped.

2. The RGV transport vehicle with multi-station cyclic and intermittent movement according to claim 1, characterized in that: The parallel double-wheel rails (3) are fixedly connected by a connecting rod (6); the support platform (7) is an annular groove adapted to the rotation area of ​​the circulating chain (11).

3. The RGV transport vehicle with multi-station cyclic and intermittent movement according to claim 1, characterized in that: The upper roller (12) is fixedly connected to the upper surface of one of the links (100) of the circulating chain (11); the width of the groove (181) is adapted to the diameter of the upper roller (12).

4. The RGV transport vehicle with multi-station cyclic and intermittent movement according to claim 2, characterized in that: The upper roller (12) is tightly fitted or keyed and tightly fitted onto the connecting shaft (8); the lower roller (4) is fixedly connected to the lower surface of the circulating chain (11).

5. The RGV transport vehicle with multi-station cyclic and intermittent movement according to claim 4, characterized in that: Both the upper roller (12) and the lower roller (4) are bearings; the diameter of the lower roller (4) is adapted to the width of the annular groove.

6. The RGV transport vehicle with multi-station cyclic and intermittent movement according to claim 5, characterized in that: The bearing is fitted with a shaft retaining ring (121).

7. The RGV transport vehicle with multi-station cyclic and intermittent movement according to any one of claims 1 to 6, characterized in that: Motor vehicles are placed on the vehicle carrier (2) and transported intermittently in a circulating assembly line.

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