Transfer car for testing

By designing a body of a transit vehicle with a locking position and an unlocking position, and setting a locking piece on the movable part, the problems of easy slipping out and complicated operation of the traditional transit vehicle fixture are solved, and the synchronous locking and unlocking of the fixture is realized , improves operational convenience.

CN222432370UActive Publication Date: 2025-02-07SHENZHEN DINGTAI JIACHANG TECH CO LTD
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Patent Information

Application Number
CN202421356755.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-13
Publication Date
2025-02-07
Estimated Expiration
2034-06-13

AI Technical Summary

Technical Problem

The fixtures of traditional transit vehicles lack locking structures, which makes the fixtures easy to slide out and require manual operation of the locking structure, which is cumbersome and inconvenient.

Method used

A test transit car was designed, with locking positions and unlocking positions on the vehicle body. The movable part is fixed to these positions through the adjustment part, and the movable part is provided with locking parts, locking parts and fixtures. The locking holes correspond one by one, and the locking member can be locked or unlocked synchronously by moving the adjusting part.

Benefits of technology

Synchronous locking or unlocking of fixtures is realized, avoiding individual locking of each fixture, simplifying the operation process, and improving operation convenience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a transfer car for testing. The transfer car comprises a car body; the jigs are arranged on the vehicle body, and each jig is provided with a locking hole; the locking assembly comprises a movable part and an adjusting part, the vehicle body is provided with a locking position and an unlocking position, the movable part is fixed to the locking position or the unlocking position of the vehicle body through the adjusting part, the movable part is provided with a plurality of locking pieces matched with the locking holes in a locking mode, and the locking pieces correspond to the locking holes one to one. When the movable part is located at the locking position, all the locking pieces synchronously enter the locking holes to complete locking of the jigs, when the movable part is located at the unlocking position, all the locking pieces retreat from the locking holes to unlock the jigs, independent unlocking of each jig is avoided, synchronous locking or unlocking of all the jigs is achieved, and the beneficial effect of being convenient and fast to operate is achieved.
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Description

Technical Field

[0001] The utility model relates to the field of PCB board assembly and processing, in particular to a transfer vehicle for testing. Background Art

[0002] After the RF antenna PCB board is assembled, the trays with PCB boards are automatically collected on the transfer cart and put into the aging cabinet. The powered communication cables are manually plugged in and out to complete the functional test in batches. After the test is completed, the transfer cart returns to the automatic tray collection area, automatically lowers the tray fixture, manually removes the PCB board that has been tested, and then loads the product to be tested.

[0003] In a traditional transfer vehicle, multiple jigs are arranged side by side in the vertical direction. PCB boards are placed in the jigs and then transferred. However, each jig does not have a locking structure or each jig is provided with a corresponding locking structure, wherein the locking structure is used to lock the position of the jig to prevent the jig from sliding out. A jig without a locking structure is easy to slide out of the transfer vehicle. A transfer vehicle in which each jig is provided with a locking structure requires manual operation of the locking structure on each jig to lock each jig on the transfer vehicle. This locking method requires repeated locking of each jig, which has the disadvantage of cumbersome operation. Utility Model Content

[0004] In order to overcome the disadvantage of the prior art that each fixture needs to be repeatedly locked, which results in cumbersome operation, the utility model provides a test transfer vehicle, including:

[0005] Vehicle body;

[0006] A plurality of jigs are mounted on the vehicle body, each of which is provided with a locking hole;

[0007] The locking assembly includes a movable part and an adjusting part. The vehicle body is provided with a locking position and an unlocking position. The movable part is fixed to the locking position or the unlocking position of the vehicle body through the adjusting part. The movable part is provided with a plurality of locking pieces that lock with the locking holes, and the locking pieces correspond to the locking holes one by one.

[0008] Optionally, the adjusting part includes an adjusting block, on which a latch is provided; a fixing seat, mounted on the vehicle body, having two pin holes, the positions of the two pin holes respectively corresponding to a locking position and an unlocking position on the vehicle body; the movable part includes a first movable rod, the locking member is mounted on the first movable rod, and the first movable rod is mounted on the adjusting block.

[0009] Optionally, a limit plate is provided on the vehicle body, a through hole is provided on the limit plate, the first movable rod passes through the limit plate, a first spring is provided on the limit plate, the first spring is sleeved on the first movable rod, one end of the first spring is connected to the limit plate, and the other end of the first spring is connected to the locking member.

[0010] Optionally, the movable part further includes a second movable rod, the first movable rod is hinged to the second movable rod, a bearing seat is provided on the vehicle body, the second movable rod is fixed to the vehicle body through the bearing seat, and an elastic component is provided on the second movable rod.

[0011] Optionally, the elastic component includes a second spring and an adjusting ring, the adjusting ring is mounted on the second movable rod, the second spring is sleeved on the second movable rod, one end of the second spring is connected to the bearing seat, and the other end of the second spring is connected to the adjusting ring.

[0012] Optionally, the vehicle body comprises:

[0013] The vehicle frame is provided with a trailer handle, and the trailer handle is provided with an anti-collision member;

[0014] A plurality of wheels are mounted on the bottom of the frame, and a support member is provided on one side of the bottom of the frame corresponding to each wheel.

[0015] Optionally, the wheel is mounted on the bottom of the frame via an adjustment plate, and the adjustment plate is fixed to the bottom of the frame via screws.

[0016] Optionally, the vehicle body is provided with a plurality of positioning mechanisms, each of which has the same structure and includes a clamping head, a mounting seat, and a third spring. The mounting seat is provided with a slide groove, the clamping head is arranged in the slide groove, one end of the third spring is connected to the mounting seat, and the other end of the third spring is connected to the clamping head, and the fixture is provided with a clamping groove that cooperates with the clamping head.

[0017] Optionally, the vehicle body is provided with a plurality of guide rails, each of which has the same structure, and the guide rails include side panels installed on both sides of the vehicle body, each side panel is provided with a plurality of rollers, each roller is equidistantly arranged side by side on the side panel, and a fixture is placed on each guide rail.

[0018] Optionally, a pressure plate is provided on the side plate.

[0019] The beneficial effect of the utility model is as follows: the jig is placed on the vehicle body jig, the PCB board is placed on the jig, and after the PCB board is assembled, the movable part is installed to the unlocking position of the vehicle body through the adjusting part. When the movable part is in the unlocking position of the vehicle body, the locking piece on the movable part is not inserted into the locking hole of the jig. At this time, the jig can be taken out and the PCB board is placed. After the placement is completed, the movable part is transferred and installed to the locking position of the vehicle body through the adjusting part. At this time, the locking piece on the movable part moves synchronously with the movable part and then is inserted into the jig. When the movable part is in the locking position, all the locking parts enter the locking hole to complete the locking of the fixture. When the movable part is in the unlocking position, all the locking parts exit the locking hole to release the lock of the fixture, thus avoiding the need to unlock each fixture separately and realizing the synchronous locking or unlocking of all fixtures. The operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 is a schematic diagram of the assembly of a transfer vehicle for testing in some embodiments;

[0022] Figure 2 yes Figure 1 A partial enlarged view of the middle A part;

[0023] Figure 3 is an exploded view of a transfer vehicle for testing in some embodiments;

[0024] Figure 4 yes Figure 3 A partial enlarged view of the middle B part;

[0025] Figure 5 is a schematic diagram of the structure of the fixture in some embodiments;

[0026] Figure 6 Schematic diagram of the structure of the locking mechanism in some embodiments.

[0027] Explanation of the accompanying drawings: 1. Vehicle body; 101. Limit plate; 102. Guide shaft; 103. Vehicle frame; 104. Trailer handle; 105. Anti-collision member; 106. Wheel; 107. Support member; 108. Adjustment plate; 109. Positioning mechanism; 110. Clamp; 111. Mounting seat; 112. Third spring; 113. Guide rail; 114. Side plate; 115. Roller; 116. Press plate; 2. Jig; 201. Locking hole; 202. Slot; 3. Locking mechanism; 301. Locking member; 302. First movable rod; 303. Adjustment block; 304. Fixed seat; 305. Latch; 306. Pin hole; 307. Adjustment handle; 308. First spring; 309. Second movable rod; 310. Bearing seat; 311. Second spring; 312. Adjustment ring. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0029] The utility model provides a test transfer vehicle, comprising: a vehicle body 1; a plurality of jigs 2, mounted on the vehicle body 1, each jig 2 being provided with a locking hole 201; a locking mechanism 3, comprising a movable part and an adjusting part, the vehicle body 1 being provided with a locking position and an unlocking position, the movable part being fixed at the locking position or the unlocking position of the vehicle body 1 through the adjusting part, the movable part being provided with a plurality of locking members 301, and the locking members 301 and the locking holes 201 being in one-to-one correspondence. Among them, the vehicle body 1 is the main structure of the test transfer vehicle, and is used to carry other auxiliary components, the jig 2 is used to place a radio frequency antenna PCB board, the locking mechanism 3 is used to lock the jig 2 on the vehicle body 1, the movable part is used to move on the vehicle body 1, and the adjusting part is used to adjust the position of the movable part on the vehicle body 1; the locking members 301 and the locking holes 201 are in one-to-one correspondence, and the corresponding relationship includes the correspondence between position and quantity.

[0030] During implementation, the jig 2 is placed on the jig 2 of the vehicle body 1, and the PCB board is placed on the jig 2. After the PCB board is assembled, the movable part is installed to the unlocking position of the vehicle body 1 through the adjustment part. When the movable part is in the unlocking position of the vehicle body 1, the locking piece 301 on the movable part is not inserted into the locking hole 201 of the jig 2. At this time, the jig 2 can be taken out and the PCB board is placed. After the placement is completed, the movable part is transferred and installed to the locking position of the vehicle body 1 through the adjustment part. At this time, the locking piece 301 on the movable part moves synchronously with the movable part and then is inserted into the locking hole 201 of the jig 2 to complete the locking. Tight; when the movable part is fixed in the locking position of the vehicle body 1, each locking member 301 passes through the locking hole 201 of the fixture 2 to lock the fixture 2 in the vehicle body 1, and the locking member 301 synchronously follows the switching of the locking position and the unlocking position of the vehicle body 1. When the movable part is in the locking position, all the locking members 301 synchronously enter the locking hole 201 to complete the locking of the fixture 2. When the movable part is in the unlocking position, all the locking members 301 exit the locking hole 201 to release the lock of the fixture 2, avoiding the unlocking of each fixture 2 separately, and realizing the synchronous locking or unlocking of all fixtures 2, which has the advantage of convenient operation.

[0031] Specifically, the position correspondence between the locking piece 301 and the locking hole 201 refers to that the unlocking position on the vehicle body 1 is above the locking position. When the movable part is installed in the unlocking position through the adjusting part, the locking piece 301 on the movable part is located above the locking hole 201. The movable part is transferred to the locking position of the vehicle body 1 through the adjusting part, and the locking piece 301 on the movable part moves downward into the locking hole 201 to complete the locking of the fixture 2; conversely; in some cases, the unlocking position of the vehicle body 1 is below the locking position. When the movable part is installed in the unlocking position through the adjusting part, the locking piece 301 on the movable part is located below the locking hole 201. The movable part is transferred to the locking position of the vehicle body 1 through the adjusting part, and the locking piece 301 on the movable part moves upward into the locking hole 201 to complete the locking of the fixture 2.

[0032] In some embodiments, the movable part includes a first movable rod 302, the locking member 301 is installed on the first movable rod 302, the adjusting part includes an adjusting block 303 and a fixing seat 304, which are installed on the first movable rod 302, and the adjusting block 303 is provided with a pin 305; the fixing seat 304 is installed on the vehicle body 1 and has two pin holes 306, and the positions of the two pin holes 306 correspond to the locking position and the unlocking position on the vehicle body 1 respectively.

[0033] During implementation, the latch 305 on the adjusting block 303 is inserted into the pin hole 306 of the fixing seat 304 corresponding to the unlocking position of the vehicle body 1, so that the adjusting block 303 is fixed to the locking position of the vehicle body 1 by the latch 305, and the first movable rod 302 is fixed to the locking position along with the adjusting block 303. At this time, the locking member 301 on the first movable rod 302 is located in the locking hole 201 of the fixture 2 to lock the fixture 2. The fixing seat 304 is in the pin hole 306 of the unlocking position of the vehicle body 1, so that the adjusting block 303 is fixed in the unlocking position of the vehicle body 1, and the first movable rod 302 is fixed in the unlocking position of the vehicle body 1 along with the adjusting block 303. At this time, the locking piece 301 on the first movable rod 302 withdraws from the locking hole 201 of the fixture 2, and the fixture 2 is unlocked; the adjusting blocks 303 are respectively fixed in different pin holes 306 of the fixing seat 304, thereby realizing the adjustment of the first movable rod 302.

[0034] Specifically, a plurality of limit plates 101 are provided on the vehicle body 1, and each limit plate 101 has the same structure. A through hole is provided on the limit plate 101, and the first movable rod 302 passes through the through hole of each limit plate 101. The limit plate 101 serves to limit the first movable rod 302. The adjustment block 303 is arranged between the two limit plates 101, and a guide shaft 102 is provided between the two limit plates 101 above and below the adjustment block 303. A bearing is provided on the adjustment block 303, and the guide shaft 102 passes through the bearing of the adjustment block 303. The guide shaft 102 serves to guide the adjustment block 303. An adjustment handle 307 is also provided on the adjustment block 303, and the position of the adjustment block 303 is adjusted by adjusting the handle 307, wherein the limit plate above the adjustment block 303 A first spring 308 is provided on 101, and the first spring 308 is sleeved on the first movable rod 302. One end of the first spring 308 is connected to a locking piece 301 on the first movable rod 302, and the other end of the first spring 308 is connected to the limiting plate 101. When the pin 305 on the adjusting block 303 is not inserted into the pin 305 hole of the fixing seat 304, the first spring 308 will push the locking piece 301 on the first movable rod 302 to move the first movable rod 302 upward, so that the first movable rod 302 can be pushed to the unlocking position by the first spring 308 when it is not fixed in the unlocking position of the vehicle body 1 by the adjusting block 303. The locking piece 301 on the first movable rod 302 can also be withdrawn from the locking hole 201 on the fixture 2 to complete the unlocking of the fixture 2.

[0035] In some embodiments, the movable part also includes a second movable rod 309, the first movable rod 302 is hinged to the second movable rod 309, a bearing seat 310 is provided on the vehicle body 1, the second movable rod 309 is fixed on the vehicle body 1 through the bearing seat 310, and an elastic component is provided on the second movable rod 309.

[0036] During implementation, the second movable rod 309 moves in the bearing seat 310, and the elastic component on the second movable rod 309 can push the second movable rod 309. The second movable rod 309 pushes the first movable rod 302 under the push of the elastic component. When the first movable rod 302 is not fixed in the locked position by the adjustment block 303, the second movable rod 309 can push the first movable rod 302 to the unlocked position under the push of the elastic component, so that the locking piece 301 on the first movable rod 302 withdraws from the locking hole 201 of the fixture 2, so that the first movable rod 302 is kept in the unlocked position. When the test transfer vehicle provided in this embodiment is docked with an external automatic collector, the induction detection device in the automatic collection mechanism can detect The position of the second movable rod 309 is used to determine whether the fixture 2 is unlocked, that is, when the second movable rod 309 pushes the first movable rod 302 to make the first movable rod 302 reach the unlocking position, the position of the second movable rod 309 at this time is the first position, and when the first movable rod 302 is fixed in the locking position by the fixing seat 304, the second movable rod 309 will also be pushed to a position by the first movable rod 302, and this position is the second position. The induction detection device of the automatic collection mechanism can detect whether the second movable rod 309 is in the first position or the second position, thereby determining whether the first movable rod 302 is in the locking position or the unlocking position, and finally detecting whether the fixture 2 is unlocked. After detecting that it is unlocked, the fixture 2 is pulled out to take out the internal PCB board.

[0037] Specifically, the first movable rod 302 is vertically arranged on the vehicle body 1 , and the second movable rod 309 is horizontally arranged on the vehicle body 1 . The first movable rod 302 and the second movable rod 309 are perpendicular to each other, and the second movable rod 309 is hinged to the first movable rod 302 at both ends.

[0038] In some embodiments, the elastic component includes a second spring 311 and an adjusting ring 312. The adjusting ring 312 is installed on the second movable rod 309. The second spring 311 is sleeved on the second movable rod 309. One end of the second spring 311 is connected to the bearing seat 310, and the other end of the second spring 311 is connected to the adjusting ring 312.

[0039] During implementation, the second spring 311 serves as an elastic member and can push the adjusting ring 312 to move the second movable rod 309. To ensure the accuracy of the second movable rod 309 pushing the first movable rod 302 to the unlocked position, the compression amount of the second spring 311 can be adjusted by changing the position of the adjusting ring 312 on the second movable rod 309, thereby changing the moving distance of the second movable rod 309 pushing the first movable rod 302, until the first movable rod 302 is exactly in the unlocked position under the natural pushing state of the second spring 311.

[0040] In some embodiments, the vehicle body 1 includes: a frame 103, provided with a trailer handle 104, and an anti-collision member 105 on the trailer handle 104; a plurality of wheels 106 installed at the bottom of the frame 103, and a support member 107 is provided on one side of the bottom of the frame 103 corresponding to each wheel 106.

[0041] During implementation, a trailer handle 104 is installed on the frame 103, and then an anti-collision member 105 is installed on the door handle. When the test transfer vehicle provided in this embodiment needs to be transferred, the trailer handle 104 can be manually held to drag the frame 103. The anti-collision member 105 can prevent the trailer handle 104 from hitting a wall or other structures to avoid damage to the trailer handle 104 due to the impact. Wheels 106 are installed at the bottom of the frame 103 to facilitate movement of the frame 103. The support member 107 is used to support the frame 103. When the wheel 106 is damaged, the support member 107 can replace the wheel 106 to support the frame 103.

[0042] Specifically, four wheels 106 are provided at the bottom of the frame 103. The frame 103 is a square frame. The four wheels 106 are respectively distributed and installed at the four corners of the bottom of the frame 103. Two wheels 106 on the same side are universal wheels with brake pads, and the other two wheels 106 are fixed wheels. The frame 103 is also provided with a block, which is used to prevent the frame 103 from being too close to other equipment.

[0043] In some embodiments, the wheel 106 is mounted on the bottom of the frame 103 via an adjustment plate 108 , and the adjustment plate 108 is fixed to the bottom of the frame 103 via screws.

[0044] During implementation, the position of the adjustment plate 108 at the bottom of the frame 103 can be adjusted by turning the screws, thereby adjusting the position of the wheel 106; because the application scenario environment may be different, for example, in different factories, the heights of the automatic collection mechanisms that need to be docked are different, so in order to adapt to the height of the automatic collection mechanisms, the height of the frame 103 on the wheel 106 can be adjusted by changing the height of the adjustment plate 108. At the same time, when facing complex ground, the height of a single adjustment plate 108 can be adjusted to adapt to the complex ground.

[0045] In some embodiments, a plurality of positioning mechanisms 109 are provided on the vehicle body 1, and each of the positioning mechanisms 109 has the same structure and includes a clamping head 110, a mounting seat 111, and a third spring 112. The mounting seat 111 is provided with a slide groove, and the clamping head 110 is arranged in the slide groove. One end of the third spring 112 is connected to the mounting seat 111, and the other end of the third spring 112 is connected to the clamping head 110. The fixture 2 is provided with a clamping groove 202 that cooperates with the clamping head 110.

[0046] During implementation, the positioning mechanism 109 is used to assist the positioning of the jig 2 in the vehicle body 1, and the clamping head 110 can move in the slide groove of the mounting seat 111. When the jig 2 is pushed into the vehicle body 1, the side of the jig 2 will contact the clamping head 110, and the clamping head 110 will compress the third spring 112 and move to one end of the slide groove. When the clamping groove 202 of the jig 2 reaches the position of the clamping head 110, the clamping head 110 will be pushed into the clamping groove 202 of the jig 2 under the elastic force of the third spring 112, thereby achieving the clamping position limitation of the jig 2.

[0047] In some embodiments, the vehicle body 1 is provided with a plurality of guide rails 113, each guide rail 113 has the same structure, the guide rails 113 include side panels 114 installed on both sides of the vehicle body 1, each side panel 114 is provided with a plurality of rollers 115, each roller 115 is equidistantly arranged side by side on the side panel 114, and a fixture 2 is placed on each guide rail 113.

[0048] During implementation, the guide rail 113 is used to assist the jig 2 in being pulled out and put in the vehicle body 1. When the jig 2 is located in the vehicle body 1, the bottoms of both sides of the jig 2 abut against the rollers 115 of the side panels 114. Multiple rollers 115 are arranged side by side to keep the jig 2 balanced. When the jig 2 is pulled out or put in, the bottom of the jig 2 abuts against the rollers 115, and the rollers 115 roll to assist the movement of the jig 2.

[0049] In some cases, the guide rail 113 may also include side panels 114 on both sides of the vehicle body 1, each side panel 114 is provided with a slide groove, and sliders are correspondingly provided on both sides of the jig 2. When the jig 2 is in the vehicle body 1, the slider on the jig 2 is located in the slide groove of the side panel 114, and when the jig 2 is pulled out or sent in, the slider on the jig 2 moves in the slide groove of the side panel 114.

[0050] In some embodiments, a pressing plate 116 is disposed on each side plate 114 .

[0051] During implementation, installing the limiting plates 101 on the side plates 114 can prevent the two sides of the fixture 2 from tilting up from the guide rails 113 , thereby improving the stability of the fixture 2 in the vehicle body 1 .

[0052] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A transfer vehicle for testing, characterized in that: include: Vehicle body; A plurality of jigs are mounted on the vehicle body, each of which is provided with a locking hole; The locking assembly includes a movable part and an adjusting part. The vehicle body is provided with a locking position and an unlocking position. The movable part is fixed to the locking position or the unlocking position of the vehicle body through the adjusting part. The movable part is provided with a plurality of locking pieces that lock with the locking holes, and the locking pieces correspond to the locking holes one by one.

2. The test transfer vehicle according to claim 1, characterized in that: The adjusting part comprises an adjusting block, on which a latch is arranged; a fixing seat, which is mounted on the vehicle body and has two pin holes, the positions of which respectively correspond to a locking position and an unlocking position on the vehicle body; the movable part comprises a first movable rod, on which the locking member is mounted, and the first movable rod is mounted on the adjusting block.

3. The test transfer vehicle according to claim 2, characterized in that: A limit plate is provided on the vehicle body, a through hole is provided on the limit plate, the first movable rod passes through the limit plate, a first spring is provided on the limit plate, the first spring is sleeved on the first movable rod, one end of the first spring is connected to the limit plate, and the other end of the first spring is connected to the locking member.

4. The test transfer vehicle according to claim 2, characterized in that: The movable part also includes a second movable rod, the first movable rod is hinged to the second movable rod, a bearing seat is provided on the vehicle body, the second movable rod is fixed on the vehicle body through the bearing seat, and an elastic component is provided on the second movable rod.

5. The test transfer vehicle according to claim 4, characterized in that: The elastic component includes a second spring and an adjusting ring. The adjusting ring is mounted on the second movable rod. The second spring is sleeved on the second movable rod. One end of the second spring is connected to the bearing seat, and the other end of the second spring is connected to the adjusting ring.

6. The test transfer vehicle according to claim 1, characterized in that: The vehicle body comprises: The vehicle frame is provided with a trailer handle, and the trailer handle is provided with an anti-collision member; A plurality of wheels are mounted on the bottom of the frame, and a support member is provided on one side of the bottom of the frame corresponding to each wheel.

7. The test transfer vehicle according to claim 6, characterized in that: The wheel is mounted on the bottom of the frame through an adjustment plate, and the adjustment plate is fixed to the bottom of the frame through screws.

8. The test transfer vehicle according to claim 1, characterized in that: The vehicle body is provided with a plurality of positioning mechanisms, each of which has the same structure and includes a clamping head, a mounting seat, and a third spring. The mounting seat is provided with a slide groove, the clamping head is arranged in the slide groove, one end of the third spring is connected to the mounting seat, and the other end of the third spring is connected to the clamping head, and the fixture is provided with a clamping groove that cooperates with the clamping head.

9. The test transfer vehicle according to claim 1, characterized in that: The vehicle body is provided with a plurality of guide rails, each of which has the same structure. The guide rails include side panels mounted on both sides of the vehicle body, each of which is provided with a plurality of rollers, each of which is equidistantly arranged side by side on the side panel, and a fixture is placed on each guide rail.

10. The test transfer vehicle according to claim 9, characterized in that: A pressing plate is arranged on the side plate.