Annular shuttle vehicle system based on straight track switching device

Abstract

The utility model discloses an annular shuttle vehicle system based on a straight track switching device, the annular shuttle vehicle system is provided with a first straight track and a second straight track, and the first straight track switching device is arranged between the left end part of the first straight track and the left end part of the second straight track; a second straight track switching device is arranged between each maintenance straight track on the periphery of the first straight track and the first straight track; third straight track switching devices are arranged between the low-efficiency obstacle avoidance straight tracks on the periphery of the second straight track and the second straight track, and fourth straight track switching devices are arranged at the right end of the first straight track, the right end of the second straight track and among the low-efficiency obstacle avoidance straight tracks. The straight rail replacing device is used for replacing rails, the manufacturing difficulty of the rails is reduced, the mechanical failure rate of the vehicle body is effectively reduced, one drive can be reduced for the annular shuttle vehicle, the manufacturing cost is lower, and electrical debugging is easier.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of three -dimensional storage, especially relates to a kind of annular shuttle vehicle system based on straight rail rail changer. BACKGROUND

[0002] Annular shuttle vehicle is widely applied in the automatic three-dimensional warehouse industry due to the advantages of strong expansibility, high transfer efficiency and flexible transfer.

[0003] For the convenience of description, the two straight rails, cross braces, several adjusting footings and the like constituting a whole body for the annular shuttle vehicle to travel are referred to as track. The annular shuttle vehicle system has two main tracks: a first straight track and a second straight track. The two ends of the first straight track and the second straight track are connected by arc-shaped curved tracks. In addition, corresponding switches are combined to realize the expansion of other process functions such as low-energy obstacle avoidance area, automatic maintenance area and high-speed track. However, the curved track production is extremely difficult, and it is difficult to ensure the circularity and the distortion of the track itself. Therefore, the annular shuttle vehicle will be subjected to more abnormal forces when passing through the curve, which will cause damage to the guide wheels, rotating mechanisms and rotating rail changing mechanisms of the annular shuttle vehicle. In addition, the arc lengths of the inner curved track and the outer curved track in the curved track are different, so the annular shuttle vehicle needs to use two sets of walking driving devices. The synchronization of the two sets of walking driving devices is difficult to ensure, especially when turning, which will cause the annular shuttle vehicle to be subjected to abnormal forces and abnormal damage. SUMMARY

[0004] The technical problem to be solved by the utility model is to provide an annular shuttle vehicle system based on straight rail rail changer, which has compact layout, long service life and low cost.

[0005] In view of the use defects of the annular shuttle vehicle system in the background art, the present scheme provides an annular shuttle vehicle system based on straight rail rail changer, which cancels the curved track and the switch and uses the straight rail rail changer to change the rail. The entire annular shuttle vehicle system is arranged without curved track, which greatly reduces the manufacturing difficulty of the track and avoids the abnormal damage of the guide wheels, steering mechanisms and steering track changing mechanisms of the annular shuttle vehicle due to the abnormal forces when passing through the curve, and reduces the mechanical failure rate of the vehicle body. In addition, the annular shuttle vehicle can reduce one drive and adopt a single drive form, which is lower in cost and avoids the out-of-sync problem during electrical debugging, making electrical debugging easier and more competitive in the market.

[0006] The ring-shaped shuttle vehicle system based on the straight rail track switching device improves the original traditional ring-shaped shuttle vehicle system, removes the curved rail track between the left end of the first straight rail track and the left end of the second straight rail track, and replaces it with a straight rail track switching device, which is referred to as a first straight rail track switching device. The ring-shaped shuttle vehicle can switch from the first straight rail track to the second straight rail track or from the second straight rail track to the first straight rail track through the first straight rail track switching device, achieving the purpose of track switching.

[0007] The first straight rail track is improved in overall layout according to space. The maintenance area is placed on the left segment of the first straight rail track, and the turnout in the traditional ring-shaped shuttle vehicle system is cancelled. The straight rail track switching device is still used to achieve track switching. The automated storage and retrieval system is placed on the right side of the maintenance area. The overall improvement is as follows: the first straight rail track is composed of a left first straight rail track and a right first straight rail track. At least one maintenance straight rail track is arranged on the periphery of the left first straight rail track. Straight rail track switching devices, referred to as second straight rail track switching devices, are arranged between the right end of each maintenance straight rail track, the right end of the left first straight rail track, and the left end of the right first straight rail track. The ring-shaped shuttle vehicle can switch between each maintenance straight rail track, the left first straight rail track, and the right first straight rail track through the second straight rail track switching device. That is, the ring-shaped shuttle vehicle can switch from any maintenance straight rail track to another maintenance straight rail track through the second straight rail track switching device. The ring-shaped shuttle vehicle can also switch from any maintenance straight rail track to the left first straight rail track or vice versa through the second straight rail track switching device. The ring-shaped shuttle vehicle can also switch from any maintenance straight rail track to the right first straight rail track or vice versa through the second straight rail track switching device. The ring-shaped shuttle vehicle can also switch from the left first straight rail track to the right first straight rail track or vice versa through the second straight rail track switching device.

[0008] An automated storage and retrieval system is arranged on the periphery of the right first straight rail track. The automated storage and retrieval system usually stores finished products, supplies empty pallets, packaging materials, etc. to the production line. A plurality of first conveyors are arranged between the right first straight rail track and the automated storage and retrieval system from left to right. The connection between the automated storage and retrieval system, each first conveyor, and the first straight rail track still follows the traditional way, and this part is not improved.

[0009] The second straight track periphery improves the overall layout according to space, places the low-efficiency obstacle avoidance area at the right periphery of the second straight track, cancels the turnout in the traditional ring-shaped shuttle vehicle system, still uses the straight track switching device to realize the switching of the track, places the production line area on the left side of the low-efficiency obstacle avoidance area, and overall improves the specific as follows: the second straight track is composed of a left second straight track and a right second straight track, at least one low-efficiency obstacle avoidance straight track is arranged at the periphery of the right second straight track, a straight track switching device is arranged between the left end of each low-efficiency obstacle avoidance straight track, the right end of the left second straight track, and the left end of the right second straight track, and is recorded as a third straight track switching device; the ring-shaped shuttle vehicle can switch between each low-efficiency obstacle avoidance straight track, the left second straight track, and the right second straight track through the third straight track switching device, that is, the ring-shaped shuttle vehicle can switch from any low-efficiency obstacle avoidance straight track to any other low-efficiency obstacle avoidance straight track through the third straight track switching device, the ring-shaped shuttle vehicle can also switch from any low-efficiency obstacle avoidance straight track to the left second straight track or vice versa through the third straight track switching device, the ring-shaped shuttle vehicle can also switch from any low-efficiency obstacle avoidance straight track to the right second straight track or vice versa through the third straight track switching device, and the ring-shaped shuttle vehicle can also switch from the left second straight track to the right second straight track or vice versa through the third straight track switching device.

[0010] A production line area is arranged at the periphery of the left second straight track, and the production line area usually produces finished products, requires empty pallets, and produces materials such as packaging materials. A plurality of second conveyors are arranged between the left second straight track and the production line area from left to right, and the connection between the production line area, each second conveyor, and the second straight track still uses the traditional mode, and this part is not improved.

[0011] The curved track between the right end of the original first straight track and the right end of the second straight track is removed, a straight track switching device is arranged between the right end of the first straight track, the right end of the second straight track, and the right end of each low-efficiency obstacle avoidance straight track, and is recorded as a fourth straight track switching device; the ring-shaped shuttle vehicle can switch between each low-efficiency obstacle avoidance straight track, the first straight track, and the second straight track through the fourth straight track switching device, that is, the ring-shaped shuttle vehicle can switch from any low-efficiency obstacle avoidance straight track to any other low-efficiency obstacle avoidance straight track through the fourth straight track switching device, the ring-shaped shuttle vehicle can also switch from any low-efficiency obstacle avoidance straight track to the right second straight track or vice versa through the fourth straight track switching device, the ring-shaped shuttle vehicle can also switch from any low-efficiency obstacle avoidance straight track to the right first straight track or vice versa through the fourth straight track switching device, and the ring-shaped shuttle vehicle can also switch from the right second straight track to the right first straight track or vice versa through the fourth straight track switching device.

[0012] Further, the aforementioned ring-shaped shuttle vehicle system based on the straight rail track switching device, wherein at least one intermediate track switching rapid passage is arranged between the right first straight rail track and the left second straight rail track, the intermediate track switching rapid passage is that a first gap is arranged on the right first straight rail track, a second gap is arranged on the left second straight rail track, and a straight rail track switching device is arranged between the first gap and the second gap, which is a fifth straight rail track switching device, and the ring-shaped shuttle vehicle can switch tracks on the right first straight rail track and the left second straight rail track through the fifth straight rail track switching device to achieve the purpose of rapid track switching.

[0013] The structure and working principle of the first straight rail track switching device, the second straight rail track switching device, the third straight rail track switching device, the fourth straight rail track switching device, and the fifth straight rail track switching device are the same, and the present scheme can be collectively referred to as a straight rail track switching device, and the structure thereof is referred to the vehicle body type ring track switching device disclosed in the invention patent with the patent number 2023110690182.

[0014] At present, the ring-shaped shuttle vehicle system in the industry mostly adopts the form of centralized power supply along the entire path, which causes the selection of the slide wire to be relatively large, resulting in a certain waste. In addition, the power supply state and the running state of the slide wire are not monitored, and the running state of the slide wire and the power consumption of the entire ring-shaped shuttle vehicle cannot be monitored in a timely manner. In view of the above defects, the present scheme adopts the form of separate power supply along the long path and the auxiliary electric meter mode, which reduces the selection of the slide wire while monitoring the state of each section of the slide wire, facilitating the timely discovery of slide wire abnormalities. In addition, this mode can control the on-off of the slide wire power in sections, which facilitates the completion of the corresponding maintenance work without affecting the use of other functional areas. The specific scheme is as follows: the slide wire on the first straight rail track is composed of a plurality of first slide wires, and the outer end portions of the first slide wires at the beginning and the end and between every two adjacent first slide wires are provided with first connectors; the slide wire on the second straight rail track is composed of a plurality of second slide wires, and the outer end portions of the second slide wires at the beginning and the end and between every two adjacent second slide wires are provided with second connectors; each first slide wire and each second slide wire is independently supplied with power by a corresponding separate power supply line, and an electric meter is arranged on the corresponding separate power supply line, that is, each slide wire has a corresponding electric meter for monitoring.

[0015] Further, the aforementioned ring-shaped shuttle vehicle system based on the straight rail track switching device, wherein the first straight rail track is divided from left to right into a left adjustment section area, a standard section and a telescopic section alternating arrangement area, and a right adjustment section area; the left adjustment section area and the right adjustment section area are both single adjustment sections; in the standard section and telescopic section alternating arrangement area, at least one standard section is arranged between every two adjacent telescopic sections, and the leftmost section and the rightmost section in the standard section and telescopic section alternating arrangement area are both standard sections; the second straight rail track is divided from left to right into areas that are completely consistent with the division of the first straight rail track from left to right. The track is modularized into several fixed-length track components: adjustment sections, standard sections, and telescopic sections. The fixed-length track and the foot in each track component can be assembled into a whole in the factory in advance, so that it is not necessary to transport and assemble on site, simplifying the on-site assembly operation, shortening the on-site assembly time and assembly workload.

[0016] Since the ring-shaped shuttle vehicle will queue up and wait for the corresponding straight rail track switching device in the adjustment section, the ring-shaped shuttle vehicle stays in the adjustment section for a long time, and the running speed is relatively slow, so the number of supporting legs at the bottom of the adjustment section is greater than the number of supporting legs at the bottom of the standard section. The number of supporting legs at the bottom of the standard section is consistent with the number of supporting legs at the bottom of the telescopic section.

[0017] Each straight guide rail of the telescopic section is composed of two spliced straight guide rails with the same length, and the two spliced straight guide rails have a telescopic joint. The telescopic joint is provided to reserve the thermal expansion and contraction allowance to avoid the influence caused by thermal expansion and contraction of the guide rail.

[0018] Further, the aforementioned ring-shaped shuttle vehicle system based on the straight rail track switching device, wherein the gap of the telescopic joint between the two spliced straight guide rails in any straight guide rail of the telescopic section is 1-3 mm; the length of the adjustment section is less than or equal to the length of the single standard section; the length of the single standard section is 6 meters; and the length of the single telescopic section is 6 meters.

[0019] Generally, a telescopic section is arranged every 30 meters, that is, in the standard section and telescopic section alternating arrangement area, five standard sections are arranged between every two adjacent telescopic sections, and five standard sections are arranged in the left part of the leftmost telescopic section in the standard section and telescopic section alternating arrangement area.

[0020] The beneficial effects of the present invention are as follows: 1) a straight track track changing device is adopted for track changing, and the entire circular shuttle system is arranged without curved tracks, which will greatly reduce the difficulty of track manufacturing, avoid abnormal damage to the guide wheels, steering mechanism, and steering track spacing changing mechanism caused by the abnormal force exerted on the circular shuttle when turning, and the mechanical failure rate of the vehicle body will also be reduced; in addition, the circular shuttle can reduce one drive and adopt a single drive form, which has a lower cost and avoids the problem of asynchrony during electrical debugging, making electrical debugging easier and more competitive in the market; 2) a long path separate power supply and auxiliary electric meter are adopted, which reduces the selection of the busbar while monitoring the status of each section of the busbar, making it easy to detect busbar abnormalities in time; in addition, this method can control the on and off of the busbar electricity in sections, making it easy to complete the corresponding maintenance work without affecting the use of other functional areas; 3) the track is modularized into several fixed-length track components: adjustment section, standard section, and telescopic section, which is convenient for reducing the number of track joints, can reduce the influence of thermal expansion and contraction, and facilitates standardized track design and construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a circular shuttle system based on a straight track track changing device described in the utility model.

[0022] Figure 2 yes Figure 1 Schematic diagram of the partially enlarged structure of the left section.

[0023] Figure 3 yes Figure 1 Schematic diagram of the locally enlarged structure of part A.

[0024] Figure 4 yes Figure 1 Schematic diagram of the partially enlarged structure of the middle right section.

[0025] Figure 5 yes Figure 1 Schematic diagram of the area division of the two main tracks on the central ring shuttle system.

[0026] Figure 6 yes Figure 5 Schematic diagram of the structure of one of the telescopic sections.

[0027] Figure 7 yes Figure 6 Schematic diagram of the locally enlarged structure of part B.

[0028] in:

[0029] 1, first straight track; 11, left first straight track; 12, right first straight track; 2, second straight track; 21, left second straight track; 22, right second straight track; 31, first straight track rail changing device; 32, second straight track rail changing device; 33, third straight track rail changing device; 34, fourth straight track rail changing device; 35, fifth straight track rail changing device; 4, ring shuttle vehicle; 5, maintenance straight track; 61, automatic three-dimensional warehouse; 62, production line area; 63, maintenance area; 64, low-efficiency obstacle avoidance area; 71, first conveyor; 72, second conveyor; 8, low-efficiency obstacle avoidance straight track; 91, left adjustment section area; 92, alternating arrangement area of standard section and telescopic section; 93, right adjustment section area; 10, adjustment section; 20, standard section; 30, telescopic section; 301, spliced straight guide rail; 302, expansion joint. DETAILED DESCRIPTION

[0030] The technical scheme of the utility model will be described in further detail below in combination with the drawings and preferred embodiments. Embodiment one

[0031] As shown in Figure 1 and Figure 2 , the ring shuttle vehicle system based on the straight track rail changing device in the embodiment comprises a ring shuttle vehicle system, the ring shuttle vehicle system has two main tracks: a first straight track 1 and a second straight track 2, a first straight track rail changing device 31 is arranged between the left end of the first straight track 1 and the left end of the second straight track 2, and the ring shuttle vehicle 4 can change tracks between the first straight track 1 and the second straight track 2 through the first straight track rail changing device 31.

[0032] As shown in Figure 1 and Figure 2 , the first straight track 1 is composed of a left first straight track 11 and a right first straight track 12, a maintenance area 63 is arranged on the periphery of the left first straight track 11, at least one maintenance straight track 5 is installed in the maintenance area 63, a second straight track rail changing device 32 is arranged between the right end of each maintenance straight track 5, the right end of the left first straight track 11 and the left end of the right first straight track 12, and the ring shuttle vehicle 4 can change tracks between each maintenance straight track 5, the left first straight track 11 and the right first straight track 12 through the second straight track rail changing device 32. An automatic three-dimensional warehouse 61 is arranged on the periphery of the right first straight track 12, and a plurality of first conveyors 71 are arranged between the right first straight track 12 and the automatic three-dimensional warehouse 61 from left to right.

[0033] As shown in Figure 1 and Figure 4As shown, the second straight track 2 is composed of a left second straight track 21 and a right second straight track 22, a low-efficiency obstacle avoidance area 64 is arranged on the periphery of the right second straight track 22, at least one low-efficiency obstacle avoidance straight track 8 is installed in the low-efficiency obstacle avoidance area 64, a third straight track switching device is arranged between the left end of each low-efficiency obstacle avoidance straight track 8, the right end of the left second straight track 21, and the left end of the right second straight track 22, and the loop shuttle vehicle 4 can switch tracks between each low-efficiency obstacle avoidance straight track 8, the left second straight track 21, and the right second straight track 22 through the third straight track switching device; a production line area 62 is arranged on the periphery of the left second straight track 21, and a plurality of second conveyors 72 are arranged between the left second straight track 21 and the production line area 62 at intervals from left to right.

[0034] As shown in Figure 1 and Figure 4 A fourth straight track switching device 34 is arranged between the right end of the first straight track 1, the right end of the second straight track 2, and the right end of each low-efficiency obstacle avoidance straight track 8 in the loop shuttle vehicle system, and the loop shuttle vehicle 4 can switch tracks between each low-efficiency obstacle avoidance straight track 8, the first straight track 1, and the second straight track 2 through the fourth straight track switching device 34.

[0035] The embodiment adopts straight track switching devices to switch tracks, and the entire loop shuttle vehicle system is arranged without curved tracks, which greatly reduces the manufacturing difficulty of the tracks and avoids abnormal damage to the guide wheels, steering mechanisms, and steering track spacing mechanisms of the loop shuttle vehicle 4 caused by abnormal forces when the loop shuttle vehicle 4 passes through curves, and reduces the mechanical failure rate of the vehicle body; in addition, the loop shuttle vehicle 4 can reduce one drive and adopt a single drive form, which is lower in cost and avoids the problem of different steps during electrical debugging, making electrical debugging easier and more competitive in the market.

[0036] As shown in Figure 1 and Figure 3 At least one intermediate track switching rapid passage is arranged between the right first straight track 11 and the left second straight track 21, the intermediate track switching rapid passage is that a first gap is arranged on the right first straight track 12, a second gap is arranged on the left second straight track 21, and a fifth straight track switching device 35 is arranged between the first gap and the second gap, and the loop shuttle vehicle 4 can switch tracks between the right first straight track 12 and the left second straight track 21 through the fifth straight track switching device 35.

[0037] Among them, the structures and working principles of the first straight track track changing device 31, the second straight track track changing device 32, the third straight track track changing device 33, the fourth straight track track changing device 34, and the fifth straight track track changing device 35 are the same. This scheme can be collectively referred to as a straight track track changing device. Its structure refers to the car body type circular track changing device disclosed in the invention patent No. 2023110690182. This belongs to an existing structure that has been disclosed. This embodiment applies this structure rather than innovates this structure, so it will not be elaborated here. Example 2

[0038] This embodiment is based on the first embodiment, and changes the traditional circular shuttle system from using a centralized power supply along the long path to a separate power supply along the long path and an auxiliary electric meter. This reduces the selection of busbars and can monitor the status of each section of the busbar, making it easy to detect busbar anomalies in a timely manner. In addition, this method can control the on and off of the busbar electricity in sections, making it easy to complete the corresponding maintenance work without affecting the use of other functional areas. The specific scheme is as follows: the busbar on the first straight track 1 is composed of several sections of first busbars, and the outer ends of the first busbars at the head and tail and between two adjacent first busbars are provided with a first connector; the busbar on the second straight track 2 is composed of several sections of second busbars, and the outer ends of the second busbars at the head and tail and between two adjacent second busbars are provided with a second connector; each section of the first busbar and each section of the second busbar are independently powered by their corresponding separate power supply lines, and an electric meter is provided on the corresponding separate power supply lines. In addition, the busbars on each straight track track changing device are also powered by a corresponding separate power supply line, while the track changing trolley on the straight track track changing device is powered by a pull wire. Example 3

[0039] like Figure 5 As shown, this embodiment is designed based on either Example 1 or Example 2 for two main tracks: a first straight track 1 and a second straight track 2. The first straight track 1 is divided, from left to right, into a left adjustment section area 91, an area 92 where standard and telescopic sections are alternately arranged, and a right adjustment section area 93. Both the left adjustment section area 91 and the right adjustment section area 93 contain single adjustment sections 10. Within the area 92 where standard and telescopic sections are alternately arranged, at least one standard section 20 is arranged between two adjacent telescopic sections 30. Both the leftmost and rightmost sections within the area 92 where standard and telescopic sections are alternately arranged are standard sections 20. The left-to-right divisions of the second straight track 2 are identical to those of the first straight track 1. This solution modularizes the track into several fixed-length track assemblies: an adjustment section 10, a standard section 20, and a telescopic section 30. The fixed-length tracks and anchors within each track assembly can be pre-assembled into a single unit at the factory.

[0040] Because the loop shuttle 4 in the adjustment section 10 will exist in the queuing and straight rail track switching device on the track switching trolley, the loop shuttle 4 stays in the adjustment section 10 for a long time, and the running speed is also relatively slow, so the number of support legs at the bottom of the adjustment section 10 is greater than the number of support legs at the bottom of the standard section 20. The number of support legs at the bottom of the standard section 20 and the number of support legs at the bottom of the telescopic section 30 are consistent.

[0041] As shown in Figure 6 and Figure 7 Each straight guide rail of the telescopic section 30 is composed of two spliced straight guide rails 301 with the same length, and the two spliced straight guide rails 301 have a telescopic joint 302. The existence of the telescopic joint 302 is to reserve the thermal expansion and contraction allowance to avoid the influence caused by thermal expansion and contraction of the track. The gap H between the two spliced straight guide rails 301 in any straight guide rail of the telescopic section 30 is 1-3mm.

[0042] The length of the adjustment section 10 is less than or equal to the length of the single standard section 20. The length of the single standard section 20 is 6 meters. The length of the single telescopic section 30 is 6 meters. The optimal scheme is to set a telescopic section 30 every 30 meters, so that in the standard section and telescopic section alternating arrangement area 92, five standard sections 20 are arranged between every two adjacent telescopic sections 30, and five standard sections 20 are arranged at the left of the leftmost telescopic section 30 in the standard section and telescopic section alternating arrangement area 92.

[0043] The track is modularized into several track assemblies with fixed lengths: adjustment section 10, standard section 20, and telescopic section 30, which facilitates reducing the number of track joints, reducing the influence of thermal expansion and contraction, and facilitating standardized design and construction of the track.

[0044] The above is only the preferred embodiment of the present application, not any other form of limitation on the present application, and any modification or equivalent change made according to the technical essence of the present application still belongs to the scope of protection required by the present application.

Claims

1. A looped shuttle vehicle system based on straight track switching device, comprising: The application discloses a ring-shaped shuttle vehicle system, characterized in that: a first straight track switching device is arranged between the left end of the first straight track and the left end of the second straight track in the ring-shaped shuttle vehicle system, and the ring-shaped shuttle vehicle can switch between the first straight track and the second straight track through the first straight track switching device. The first straight track is composed of a left first straight track and a right first straight track, at least one maintenance straight track is arranged on the periphery of the left first straight track, a second straight track switching device is arranged between the right end of each maintenance straight track, the right end of the left first straight track and the left end of the right first straight track, and the ring-shaped shuttle vehicle can switch between each maintenance straight track, the left first straight track and the right first straight track through the second straight track switching device; an automated three-dimensional warehouse is arranged on the periphery of the right first straight track, and a plurality of first conveyors are arranged between the right first straight track and the automated three-dimensional warehouse from left to right at intervals. The second straight track is composed of a left second straight track and a right second straight track, at least one low-efficiency obstacle avoidance straight track is arranged on the periphery of the right second straight track, a third straight track switching device is arranged between the left end of each low-efficiency obstacle avoidance straight track, the right end of the left second straight track and the left end of the right second straight track, and the ring-shaped shuttle vehicle can switch between each low-efficiency obstacle avoidance straight track, the left second straight track and the right second straight track through the third straight track switching device; a production line area is arranged on the periphery of the left second straight track, and a plurality of second conveyors are arranged between the left second straight track and the production line area from left to right at intervals. A fourth straight track switching device is arranged between the right end of the first straight track, the right end of the second straight track and the right end of each low-efficiency obstacle avoidance straight track in the ring-shaped shuttle vehicle system, and the ring-shaped shuttle vehicle can switch between each low-efficiency obstacle avoidance straight track, the first straight track and the second straight track through the fourth straight track switching device.

2. The looped shuttle vehicle system based on straight track rail switching device according to claim 1, characterized in that: At least one intermediate track switching rapid channel is arranged between the right first straight track and the left second straight track, the intermediate track switching rapid channel is that a first gap is arranged on the right first straight track, a second gap is arranged on the left second straight track, and a fifth straight track switching device is arranged between the first gap and the second gap, and the ring-shaped shuttle vehicle can switch between the right first straight track and the left second straight track through the fifth straight track switching device.

3. The looped shuttle vehicle system based on straight rail rail-changing device according to claim 1 or 2, characterized in that: The slide wire on the first straight track is composed of a plurality of first slide wires, a first connector is arranged between the outer end of the first slide wire at the head and tail and between every two adjacent first slide wires; the slide wire on the second straight track is composed of a plurality of second slide wires, a second connector is arranged between the outer end of the second slide wire at the head and tail and between every two adjacent second slide wires; each first slide wire and each second slide wire is powered by a corresponding separate power supply line, and an electric meter is arranged on the corresponding separate power supply line.

4. The looped shuttle vehicle system based on straight rail rail-changing device according to claim 1 or 2, characterized in that: The first straight track is divided into left adjustment section area, standard section and expansion section alternating arrangement area, and right adjustment section area from left to right; the left adjustment section area and the right adjustment section area are single adjustment sections; the standard section and expansion section alternating arrangement area is arranged with at least one standard section between every two adjacent expansion sections, and the leftmost section and the rightmost section in the standard section and expansion section alternating arrangement area are standard sections; The second straight track is divided into areas from left to right, which are completely consistent with the areas divided from left to right in the first straight track; The number of support legs at the bottom of the adjustment section is greater than the number of support legs at the bottom of the standard section, and the number of support legs at the bottom of the standard section is consistent with the number of support legs at the bottom of the expansion section; Each straight guide rail of the expansion section is composed of two spliced straight guide rails with consistent lengths, and the two spliced straight guide rails have expansion joints therebetween.

5. The looped shuttle vehicle system based on straight track rail switching device according to claim 4, characterized in that: The expansion joint gap between the two spliced straight guide rails in any straight guide rail of the expansion section is 1-3 mm; The length of the adjustment section is less than or equal to the length of the single standard section; the length of the single standard section is 6 meters; and the length of the single expansion section is 6 meters.

6. The looped shuttle vehicle system based on straight track rail switching device according to claim 4, characterized in that: The standard section and expansion section alternating arrangement area is arranged with five standard sections between every two adjacent expansion sections, and the left part of the leftmost expansion section in the standard section and expansion section alternating arrangement area is arranged with five standard sections.

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