Connecting mechanism and wire harness transfer trolley

Abstract

The utility model discloses a connecting mechanism and a wire harness transfer trolley, the connecting mechanism comprises a fixed assembly, a movable assembly and a locking assembly, the fixed assembly is fixedly connected with a frame; the movable assembly is rotationally connected with the fixed assembly, the movable assembly is provided with a bearing face, the bearing face is fixedly connected with the supporting plate, and in the process that the movable assembly rotates around a rotating shaft of the movable assembly in a reciprocating mode, the gradient of the bearing face is changed, and the bearing face can be alternately located at a first dip angle or a second dip angle; the locking assembly is connected with the fixed assembly and used for being connected with or separated from the movable assembly in a clamped mode so that the movable assembly can be in a locked or unlocked state. The connecting mechanism has the advantages that the frame and the supporting plate of the transfer trolley are movably connected through the connecting mechanism, the supporting plate can be in an unfolded state or a folded state, and when the connecting mechanism is not used, the supporting plate is folded, and limited operation space in a workshop cannot be occupied.

Description

Technical Field

[0001] This utility model relates to the field of wire harness transportation technology, and in particular to a connection mechanism and a wire harness transfer vehicle. Background Technology

[0002] Wire harnesses are used to connect input and output terminals for electrical or signal transmission and are widely used in various live devices and equipment. To facilitate connection, wire harnesses are usually crimped with terminals at the ends. After the terminals are crimped, the wire harnesses are transported in batches to the next processing step via a transfer trolley.

[0003] Existing transfer trolleys (such as a new type of transfer trolley disclosed in application number 201220452298.6) generally include a frame, wheel set and pallet, etc. The pallet is fixedly connected to the frame and cannot be folded, which results in the transfer trolley occupying a large space and taking up limited operating space in the workshop when not in use. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a connecting mechanism and wire harness transfer vehicle to solve the technical problem that the pallet of the transfer trolley in the prior art cannot be folded, occupies a large space, and occupies the limited operating space in the workshop when idle.

[0005] To achieve the above-mentioned technical objectives, the present invention provides a connecting mechanism for movably connecting the frame and pallet of a transfer vehicle, so that the pallet can be in an unfolded or folded state, comprising:

[0006] A fixing component, which is fixedly connected to the vehicle frame;

[0007] A movable component is rotatably connected to the fixed component. The movable component has a bearing surface, which is fixedly connected to the support plate. During the reciprocating rotation of the movable component around its axis of rotation, the inclination of the bearing surface changes and can alternately be at a first inclination angle or a second inclination angle.

[0008] A locking component, which is connected to the fixed component and is used to engage or disengage with the movable component to put the movable component into a locked or unlocked state.

[0009] Furthermore, the fixing assembly includes a fixing plate, two guide plates, two fixing shafts, and multiple mounting rings. The fixing plate is vertically arranged and extends horizontally, with one side of the fixing plate detachably fixedly connected to the vehicle frame. The two guide plates are opposite each other and vertically arranged on the other side of the fixing plate, and are respectively fixedly connected to both ends of the fixing plate. The two fixing shafts are opposite each other and horizontally arranged on the outer sides of the two guide plates, with one end of each fixing shaft fixedly connected to one of the two guide plates. Each mounting ring is disposed between the two guide plates and spaced apart along the length of the fixing plate, and is fixedly connected to the fixing plate. The movable component is rotatably connected to the two fixing shafts.

[0010] Furthermore, the movable component includes two movable semi-rings and two support rods. The two movable semi-rings are vertically arranged opposite each other on the outside of the two guide plates, and the two movable semi-rings are coaxially rotatably sleeved on the two fixed shafts. The two support rods are fixedly connected to the planes of the two movable semi-rings, and the sidewalls of the two support rods away from the movable semi-rings form the support surface. The locking component is used to engage or disengage with the arc surfaces of the two movable semi-rings to keep the two movable semi-rings in a locked or unlocked state.

[0011] Furthermore, a first slot and a second slot are provided on the arc surface of each of the two movable semi-rings. When the bearing surface is at the first tilt angle, the tilt angle of the bearing surface is 0°, and the locking component is engaged in the two first slots. When the bearing surface is at the second tilt angle, the tilt angle of the bearing surface is 60°-90°, and the locking component is engaged in the two second slots.

[0012] Furthermore, both guide plates are provided with a first guide groove and a second guide groove from top to bottom. The first guide groove is vertically arranged, and its upper end is located on the rotation path of the first and second slots. The second guide groove is inclined, and its upper end is away from the fixed plate and corresponds to the first guide groove. The lower end of the second guide groove is close to the fixed plate. The locking assembly includes a snap-fit ​​shaft, a sliding shaft, two connecting rods, and multiple elastic elements. The snap-fit ​​shaft is horizontally arranged and slides through the two first guide grooves. The sliding shaft is horizontally arranged and slides through the two second guide grooves. The groove, the two connecting rods are both disposed between the two guide plates and abut against the two guide plates one by one, and one end of the two connecting rods is connected to the snap-fit ​​shaft, and the other end of the two connecting rods is connected to the sliding shaft. One end of each elastic element is connected to each mounting ring one by one, and the other end of each elastic element is connected to the snap-fit ​​shaft, so that the snap-fit ​​shaft is located at the upper end of the first guide groove. When the first snap-fit ​​groove corresponds to the first guide groove, the snap-fit ​​shaft is snapped into the first snap-fit ​​groove. When the second snap-fit ​​groove corresponds to the first guide groove, the snap-fit ​​shaft is snapped into the second snap-fit ​​groove.

[0013] Furthermore, the opening of the second card slot near the side wall of the first card slot has an arc-shaped structure.

[0014] Furthermore, two first threads are formed on both ends of the locking shaft, and the locking assembly also includes two first nuts. One end of each of the two connecting rods is rotatably sleeved on the locking shaft. The two first nuts are both disposed between the two connecting rods and are both sleeved on the locking shaft. The two first nuts are screwed into the two first threads one by one and abut against the two connecting rods one by one.

[0015] Furthermore, two second threads are formed on both ends of the sliding shaft, and the locking assembly also includes two second nuts. The other ends of the two connecting rods are rotatably sleeved on the sliding shaft. The two second nuts are both disposed between the two connecting rods and sleeved on the sliding shaft. The two second nuts are screwed into the two second threads one by one and abut against the two connecting rods one by one.

[0016] On the other hand, this utility model also provides a wire harness transfer vehicle, including a frame, multiple trays, multiple connecting mechanisms as described above, and multiple wheels. Each tray is arranged from bottom to top on one side of the frame. Each connecting mechanism corresponds to each tray. The wheel frame of each wheel is connected to the bottom of the frame. The rollers of each wheel are used for walking along the ground.

[0017] Furthermore, the frame includes a bottom beam, an upright plate, and a counterweight. The upright plate is vertically arranged and fixedly connected to the bottom beam. The counterweight is fixedly connected to the bottom beam. The support plate is located on one side of the upright plate. The wheel frame of the wheel body is connected to the bottom of the bottom beam.

[0018] Compared with the prior art, the beneficial effects of this utility model include: when using the wire harness transfer cart, the bearing surface is at the first tilt angle, at which time the pallet is in the unfolded state. Then, the locking component is engaged with the movable component, which can lock the movable component, thereby keeping the bearing surface at the first tilt angle and the pallet in the unfolded state. When the wire harness transfer cart is idle, the locking component is first separated from the movable component, which can unlock the movable component. The movable component is then rotated, making the bearing surface at the second tilt angle, at which time the pallet is in the folded state. Then, the locking component is engaged with the movable component, which can lock the movable component, thereby keeping the bearing surface at the second tilt angle and the pallet in the folded state. The connection mechanism of this utility model can movably connect the frame and the pallet of the transfer cart, allowing the pallet to be in the unfolded or folded state. When idle, the pallet is folded, which does not occupy the limited operating space in the workshop. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a wire harness transfer vehicle provided by this utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of a connecting mechanism provided by this utility model when the bearing surface is at the first tilt angle;

[0021] Figure 3 This is a three-dimensional structural diagram of the bearing surface of a connecting mechanism provided by this utility model during the process of changing from the first tilt angle to the second tilt angle;

[0022] Figure 4 This is a three-dimensional structural diagram of a connecting mechanism provided by this utility model when the bearing surface is at the second tilt angle;

[0023] In the diagram: 100 - frame, 110 - bottom beam, 120 - upright plate, 200 - support plate, 300 - fixed component, 310 - fixed plate, 320 - guide plate, 321 - first guide groove, 322 - second guide groove, 330 - fixed shaft, 340 - mounting ring, 400 - movable component, 410 - bearing surface, 420 - movable half ring, 421 - first slot, 422 - second slot, 430 - bearing rod, 500 - locking component, 510 - snap-fit ​​shaft, 511 - first thread, 520 - sliding shaft, 521 - second thread, 530 - connecting rod, 540 - elastic element, 550 - first nut, 560 - second nut, 600 - wheel body. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0025] This utility model provides a connecting mechanism for movably connecting the frame 100 and the pallet 200 of a transfer vehicle, so that the pallet 200 can be in an unfolded or folded state. Its structure is as follows: Figure 1 - Figure 2 As shown, the assembly includes a fixed component 300, a movable component 400, and a locking component 500. The fixed component 300 is fixedly connected to the frame 100. The movable component 400 is rotatably connected to the fixed component 300. The movable component 400 has a bearing surface 410, which is fixedly connected to the support plate 200. During the reciprocating rotation of the movable component 400 around its axis of rotation, the inclination of the bearing surface 410 changes, and it can alternately be at a first inclination angle or a second inclination angle. The locking component 500 is connected to the fixed component 300 and is used to engage or disengage with the movable component 400 to keep the movable component 400 in a locked or unlocked state.

[0026] When using the wire harness transfer cart, the bearing surface 410 is positioned at the first tilt angle. At this time, the tray 200 is in the unfolded state. Then, the locking component 500 is engaged with the movable component 400, which locks the movable component 400, thus maintaining the bearing surface 410 at the first tilt angle and the tray 200 in the unfolded state. When the wire harness transfer cart is not in use, the locking component 500 is first disengaged from the movable component 400, unlocking the movable component 400. Rotating the movable component 400 allows the... When the bearing surface 410 is at the second tilt angle, the pallet 200 is in a folded state. Then, by engaging the locking component 500 with the movable component 400, the movable component 400 can be locked, thereby keeping the bearing surface 410 at the second tilt angle and the pallet 200 in a folded state. This connecting mechanism is used to connect the frame 100 of the transfer vehicle and the pallet 200, allowing the pallet 200 to be in an unfolded or folded state. When not in use, the pallet 200 is folded, which does not occupy the limited operating space in the workshop.

[0027] As a preferred embodiment, please refer to Figure 2 and Figure 4The fixing assembly 300 includes a fixing plate 310, two guide plates 320, two fixing shafts 330, and multiple mounting rings 340. The fixing plate 310 is vertically arranged and extends horizontally, with one side of the fixing plate 310 detachably fixedly connected to the vehicle frame 100. The two guide plates 320 are opposite each other and vertically arranged on the other side of the fixing plate 310, and are respectively fixedly connected to both ends of the fixing plate 310. The two fixing shafts 330 are opposite each other and horizontally arranged on the outer sides of the two guide plates 320, with one end of each fixing shaft 330 fixedly connected to one of the two guide plates 320. The mounting rings 340 are all disposed between the two guide plates 320 and are spaced apart along the length of the fixed plate 310. Each mounting ring 340 is fixedly connected to the fixed plate 310. The movable component 400 is rotatably connected to the two fixed shafts 330. During the rotation of the movable component 400 around the two fixed shafts 330, the inclination of the bearing surface 410 will change. The bearing surface 410 can alternately be in the first inclination angle or the second inclination angle. When the bearing surface 410 is in the first inclination angle, the support plate 200 is in the unfolded state. When the bearing surface 410 is in the second inclination angle, the support plate 200 is in the folded state.

[0028] As a preferred embodiment, please refer to Figure 2 and Figure 4The movable component 400 includes two movable semi-rings 420 and two support rods 430. The two movable semi-rings 420 are vertically arranged opposite each other on the outer sides of the two guide plates 320, and are coaxially rotatably sleeved on the two fixed shafts 330. The two support rods 430 are fixedly connected to the planes of the two movable semi-rings 420, and the sidewalls of the two support rods 430 away from the movable semi-rings 420 form the support surface 410. The locking component 500 is used to engage or disengage with the arc surface of the two movable semi-rings 420 to lock or unlock the two movable semi-rings 420. When using the wire harness transfer cart, the two support rods 430 are at a first tilt angle, that is, the support surface 410 is at a first tilt angle. At this time, the tray 200 is in the unfolded state, and then the locking component 500 engages with the arc surface of the two movable semi-rings 420. The two movable semi-rings 420 can be locked, thereby keeping the two supporting rods 430 at a first tilt angle, that is, keeping the supporting surface 410 at a first tilt angle, and keeping the tray 200 in an unfolded state. When the wire harness transfer vehicle is idle, firstly, the locking component 500 is separated from the arc surface of the two movable semi-rings 420, which can unlock the two movable semi-rings 420. Then, the movable component 400 is rotated, so that the two supporting rods 430 are at a second tilt angle, that is, the supporting surface 410 is at a second tilt angle. At this time, the tray 200 is in a folded state. Then, the locking component 500 is engaged with the two movable semi-rings 420, which can lock the two movable semi-rings 420, thereby keeping the two supporting rods 430 at a second tilt angle, that is, keeping the supporting surface 410 at a second tilt angle, and keeping the tray 200 in a folded state.

[0029] As a preferred embodiment, please refer to the figure. Each of the two movable semi-rings 420 has a first slot 421 and a second slot 422 on its arc surface. When the bearing surface 410 is at a first tilt angle (0°), the locking component 500 engages with the two first slots 421. When the bearing surface 410 is at a second tilt angle (60°–90°), the locking component 500 engages with the two second slots 422. When the locking component 500 engages with the two first slots 421... The locking component 500 can lock the two movable semi-rings 420, thereby keeping the two bearing rods 430 at the first tilt angle, that is, keeping the bearing surface 410 at the first tilt angle, and keeping the tray 200 in the unfolded state. When the locking component 500 is engaged in the two second slots 422, the two movable semi-rings 420 can be locked, thereby keeping the two bearing rods 430 at the second tilt angle, that is, keeping the bearing surface 410 at the second tilt angle, and keeping the tray 200 in the folded state.

[0030] As a preferred embodiment, please refer to Figure 3 and Figure 4Each of the two guide plates 320 has a first guide groove 321 and a second guide groove 322 formed from top to bottom. The first guide groove 321 is vertically arranged, and its upper end is located on the rotation path of the first slot 421 and the second slot 422. The second guide groove 322 is inclined, and its upper end is away from the fixed plate 310 and corresponds to the first guide groove 321. The lower end of the second guide groove 322 is close to the fixed plate 310. The locking assembly 500 includes a snap-fit ​​shaft 510, a sliding shaft 520, two connecting rods 530, and multiple elastic elements 540. The snap-fit ​​shaft 510 is horizontally arranged and slides through the two first guide grooves 321. The sliding shaft 520 is horizontally positioned and slides through the two second guide grooves 322. Two connecting rods 530 are positioned between the two guide plates 320 and abut against each guide plate 320. One end of each connecting rod 530 is connected to the locking shaft 510, and the other end is connected to the sliding shaft 522. One end of each elastic element 540 is connected to each mounting ring 340, and the other end is connected to the locking shaft 510, so that the locking shaft 510 is located at the upper end of the first guide groove 321. When the first locking groove 421 corresponds to the first guide groove 321, the locking shaft 510 engages. When the second slot 422 corresponds to the first guide groove 321, the snap-fit ​​shaft 510 snaps into the second slot 422. When using the wire harness transfer cart, the two movable semi-rings 420 are rotated in the reverse direction so that the first slot 421 corresponds to the first guide groove 321. At this time, the two bearing rods 430 are at the first tilt angle, that is, the bearing surface 410 is at the first tilt angle, the tilt angle of the bearing surface 410 is 0°, the tray 200 is horizontal and in the unfolded state, the snap-fit ​​shaft 510 moves upward under the upward elastic force of each elastic element 540, and the two ends of the snap-fit ​​shaft 510 are respectively snapped into the two first slots 421, the two movable semi-rings 420 are engaged in the first slot 421, and the two movable semi-rings 420 are engaged in the first guide groove 321. With the semi-ring 420 locked, the two supporting rods 430 are held at the first tilt angle, which also means the supporting surface 410 is held at the first tilt angle, and the tray 200 is held in the unfolded state. When the wire harness transfer vehicle is idle, a downward force is manually applied to the locking shaft 510, causing both ends of the locking shaft 510 to move out of the two first locking slots 421, thus unlocking the two movable semi-rings 420. Then, the two movable semi-rings 420 are rotated clockwise, so that the second locking slot 422 corresponds to the first guide slot 321. At this time, the two supporting rods 430 are at the second tilt angle, which also means the supporting surface 410 is at the second tilt angle, which is 90°.The tray 200 is vertical and in an unfolded state. The locking shaft 510 moves upward under the elastic force of each elastic element 540. Both ends of the locking shaft 510 are respectively engaged in the two second locking slots 422, and the two movable semi-rings 420 are locked. This allows the two bearing rods 430 to be held at the second tilt angle, which in turn allows the bearing surface 410 to be held at the second tilt angle. The tray 200 remains in a folded state. The locking assembly 500 provides a simple and efficient locking and unlocking process for the two movable semi-rings 420.

[0031] As a preferred embodiment, please refer to Figure 2 The opening of the second slot 422 near the side wall of the first slot 421 is an arc-shaped structure. When a person applies an upward rotational force to the tray 200, which is greater than the upward elastic force applied by each elastic element 540 to the locking shaft 510, the locking slot can slide out from the second slot 422 without the person applying a downward force to the locking shaft 510 to move the locking shaft 510 out from the second slot 422.

[0032] As a preferred embodiment, please refer to Figure 2 The elastic element 540 is a spring with appropriate elastic force.

[0033] As a preferred embodiment, please refer to Figure 2 The locking assembly 500 includes two first threads 511 formed on both ends of the locking shaft 510. One end of each of the two connecting rods 530 is rotatably sleeved on the locking shaft 510. The two first nuts 550 are disposed between the two connecting rods 530 and sleeved on the locking shaft 510. The two first nuts 550 are screwed into the two first threads 511 in a one-to-one correspondence and abut against the two connecting rods 530 in a one-to-one correspondence, which facilitates the disassembly and assembly of the locking shaft 510 and the two connecting rods 530.

[0034] As a preferred embodiment, please refer to Figure 2 The sliding shaft 520 has two second threads 521 formed on both ends. The locking assembly 500 also includes two second nuts 560. The other ends of the two connecting rods 530 are rotatably sleeved on the sliding shaft 520. The two second nuts 560 are both disposed between the two connecting rods 530 and sleeved on the sliding shaft 520. The two second nuts 560 are screwed one-to-one with the two second threads 521 and abut against the two connecting rods 530 one-to-one, which facilitates the disassembly and assembly of the sliding shaft 520 and the two connecting rods 530.

[0035] Please refer to Figure 1Based on the above-mentioned connecting mechanism, this utility model also provides a wire harness transfer vehicle, including a frame 100, multiple trays 200, multiple of the above-mentioned connecting mechanisms, and multiple wheels 600. Each tray 200 is arranged from bottom to top on one side of the frame 100. Each of the above-mentioned connecting mechanisms corresponds one-to-one with each tray 200. The wheel frame of each wheel 600 is connected to the bottom of the frame 100. The rollers of each wheel 600 are used for walking along the ground. The arrangement of multiple trays 200 can increase the number of wire harnesses that can be transferred by this wire harness transfer vehicle, thereby improving the transfer efficiency of this wire harness transfer vehicle.

[0036] As a preferred embodiment, please refer to Figure 1 The frame 100 includes a bottom beam 110, an upright plate 120, and a counterweight. The upright plate 120 is vertically arranged and fixedly connected to the bottom beam 110. The counterweight is fixedly connected to the bottom beam 110. The support plate 200 is located on one side of the upright plate 120. The fixing assembly 300 is fixedly connected to the upright plate 120. The wheel frame of the wheel body 600 is connected to the bottom of the bottom beam 110. The counterweight can increase the weight of the bottom beam 110 and prevent the wire harness transport vehicle from tipping over.

[0037] To better understand this utility model, the following is combined with... Figure 1 - Figure 4 The working principle of the technical solution of this utility model will be described in detail below:

[0038] When using the wire harness transfer cart, rotate the two movable semi-rings 420 in the reverse direction so that the first slot 421 corresponds to the first guide slot 321. At this time, the two bearing rods 430 are at the first tilt angle, that is, the bearing surface 410 is at the first tilt angle, the tilt angle of the bearing surface 410 is 0°, the tray 200 is horizontal and in the unfolded state, the snap-fit ​​shaft 510 moves upward under the upward elastic force of each elastic element 540, and the two ends of the snap-fit ​​shaft 510 are respectively snapped into the two first slots 421, the two movable semi-rings 420 are in the locked state, so that the two bearing rods 430 can be kept at the first tilt angle, that is, the bearing surface 410 can be kept at the first tilt angle, and the tray 200 can be kept in the unfolded state. When the wire harness transfer cart is idle, manually apply a downward force to the snap-fit ​​shaft 510 so that the two ends of the snap-fit ​​shaft 510 are moved out of the two first slots 421, so that the two movable semi-rings 420 are unlocked. In the first state, rotate the two movable semi-rings 420 forward so that the second slot 422 corresponds to the first guide slot 321. At this time, the two bearing rods 430 are at the second tilt angle, that is, the bearing surface 410 is at the second tilt angle, the tilt angle of the bearing surface 410 is 90°, the pallet 200 is vertical and in the unfolded state, the snap-fit ​​shaft 510 moves upward under the upward elastic force of each elastic element 540, the two ends of the snap-fit ​​shaft 510 are respectively snapped into the two second slots 422, the two movable semi-rings 420 are in the locked state, so that the two bearing rods 430 can be kept at the second tilt angle, that is, the bearing surface 410 can be kept at the second tilt angle, and the pallet 200 is kept in the folded state. The frame 100 of the transfer vehicle and the pallet 200 are connected by this connecting mechanism, which can make the pallet 200 be in the unfolded state or the folded state. When idle, the pallet 200 is folded, which will not occupy the limited operating space in the workshop.

[0039] The connection mechanism and wire harness transfer cart provided by this utility model have the following beneficial effects:

[0040] (1) The locking component 500 has a simple and efficient locking and unlocking process for the two movable half-rings 420;

[0041] (2) The arrangement of multiple trays 200 can increase the number of wire harnesses that can be transported by this wire harness transport vehicle, thereby improving the transport efficiency of this wire harness transport vehicle;

[0042] (3) The frame 100 and the pallet 200 of the transfer vehicle are connected by this connecting mechanism, which can make the pallet 200 either unfolded or folded. When idle, the pallet 200 is folded and will not occupy the limited operating space in the workshop.

[0043] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A connecting mechanism for movably connecting the frame and pallet of a transfer vehicle, such that the pallet can be in an unfolded or folded state, characterized in that, include: A fixing component, which is fixedly connected to the vehicle frame; A movable component is rotatably connected to the fixed component. The movable component has a bearing surface, which is fixedly connected to the support plate. During the reciprocating rotation of the movable component around its axis of rotation, the inclination of the bearing surface changes and can alternately be at a first inclination angle or a second inclination angle. A locking component, which is connected to the fixed component and is used to engage or disengage with the movable component to put the movable component into a locked or unlocked state.

2. The connecting mechanism according to claim 1, characterized in that, The fixing assembly includes a fixing plate, two guide plates, two fixing shafts, and multiple mounting rings. The fixing plate is vertically arranged and extends horizontally, with one side of the fixing plate detachably fixed to the vehicle frame. The two guide plates are opposite each other and vertically arranged on the other side of the fixing plate, and are respectively fixedly connected to both ends of the fixing plate. The two fixing shafts are opposite each other and horizontally arranged on the outer sides of the two guide plates, with one end of each fixing shaft fixedly connected to one of the two guide plates. Each mounting ring is disposed between the two guide plates and spaced apart along the length of the fixing plate, and is fixedly connected to the fixing plate. The movable component is rotatably connected to the two fixing shafts.

3. The connecting mechanism according to claim 2, characterized in that, The movable component includes two movable semi-rings and two support rods. The two movable semi-rings are vertically arranged opposite each other on the outside of the two guide plates, and the two movable semi-rings are coaxially rotatably sleeved on the two fixed shafts. The two support rods are fixedly connected to the planes of the two movable semi-rings, and the sidewalls of the two support rods away from the movable semi-rings form the support surface. The locking component is used to engage or disengage with the arc surfaces of the two movable semi-rings to put the two movable semi-rings in a locked or unlocked state.

4. The connecting mechanism according to claim 3, characterized in that, Both of the two movable semi-rings have a first slot and a second slot on their arc surfaces. When the bearing surface is at the first tilt angle, the tilt angle of the bearing surface is 0°, and the locking component is engaged in the two first slots. When the bearing surface is at the second tilt angle, the tilt angle of the bearing surface is 60°-90°, and the locking component is engaged in the two second slots.

5. The connecting mechanism according to claim 4, characterized in that, Both guide plates are provided with a first guide groove and a second guide groove from top to bottom. The first guide groove is vertically arranged, and its upper end is located on the rotation path of the first and second slots. The second guide groove is inclined, and its upper end is away from the fixed plate and corresponds to the first guide groove. The lower end of the second guide groove is close to the fixed plate. The locking assembly includes a locking shaft, a sliding shaft, two connecting rods, and multiple elastic elements. The locking shaft is horizontally arranged and slides through the two first guide grooves. The sliding shaft is horizontally arranged and slides through the two second guide grooves. Each of the connecting rods is disposed between the two guide plates and abuts against each of the two guide plates. One end of each of the two connecting rods is connected to the snap-fit ​​shaft, and the other end of each of the two connecting rods is connected to the sliding shaft. One end of each of the elastic elements is connected to each of the mounting rings, and the other end of each of the elastic elements is connected to the snap-fit ​​shaft, so that the snap-fit ​​shaft is located at the upper end of the first guide groove. When the first snap-fit ​​groove corresponds to the first guide groove, the snap-fit ​​shaft is snapped into the first snap-fit ​​groove. When the second snap-fit ​​groove corresponds to the first guide groove, the snap-fit ​​shaft is snapped into the second snap-fit ​​groove.

6. The connecting mechanism according to claim 5, characterized in that, The opening of the second card slot near the side wall of the first card slot has an arc-shaped structure.

7. The connecting mechanism according to claim 5, characterized in that, Two first threads are formed on both ends of the locking shaft. The locking assembly also includes two first nuts. One end of each of the two connecting rods is rotatably sleeved on the locking shaft. The two first nuts are both disposed between the two connecting rods and sleeved on the locking shaft. The two first nuts are screwed into the two first threads one by one and abut against the two connecting rods one by one.

8. The connecting mechanism according to claim 5, characterized in that, Two second threads are formed on both ends of the sliding shaft. The locking assembly also includes two second nuts. The other ends of the two connecting rods are rotatably sleeved on the sliding shaft. The two second nuts are both disposed between the two connecting rods and sleeved on the sliding shaft. The two second nuts are screwed into the two second threads one by one and abut against the two connecting rods one by one.

9. A wire harness transfer vehicle, characterized in that, The vehicle includes a frame, multiple pallets, multiple connecting mechanisms as described in any one of claims 1-8, and multiple wheels. Each of the pallets is disposed on one side of the frame from bottom to top. Each of the aforementioned connecting mechanisms corresponds to each of the pallets. The wheel frames of each of the wheels are connected to the bottom of the frame, and the rollers of each of the wheels are used for walking along the ground.

10. The wire harness transfer vehicle according to claim 9, characterized in that, The frame includes a bottom beam, a vertical plate, and a counterweight. The vertical plate is vertically arranged and fixedly connected to the bottom beam. The counterweight is fixedly connected to the bottom beam. The support plate is located on one side of the vertical plate. The wheel frame of the wheel body is connected to the bottom of the bottom beam.

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