Connection device and transfer system

Abstract

The utility model relates to vehicle automation assembly technical field discloses connecting device and transfer system, wherein, connecting device includes base, fixed unit, drive unit, compression structure, detection unit and lock unit, when the rear car turns, under the drive of material, detection unit detects that the rear car will turn, controls lock unit to be in first state, the base passes through drive unit and drives first sliding structure to approach first fixed structure and slides, drives second sliding structure to approach second fixed structure and slides simultaneously, makes each compression structure adjust from the relaxation state to the compression state, when the rear car completes the turning and carries out the linear transportation, each compression structure loses the external force, then adjusts from the compression state to the relaxation state, makes the extension direction of base can adapt to the extension direction of material quickly, thereby reaches the technical effect that improves the cooperation between the rear car after turning and the front car, and the material transportation reliability.

Description

Technical Field

[0001] This utility model relates to the field of vehicle automated assembly technology, specifically to a connecting device and a transfer system. Background Technology

[0002] As the length of transported materials increases, the transport capacity of a single Automated Guided Vehicle (AGV) can no longer meet the requirements of the material length. Therefore, two AGVs need to work together to transport materials.

[0003] When two AGVs need to turn, a corresponding angle is generated between the front and rear vehicles. After the turn is completed, the rear vehicle needs to automatically return to the correct position to ensure the stability of material transportation.

[0004] The system includes a connecting device between the rear vehicle and the material. This device consists of a connecting plate and a tension spring. The top of the connecting plate holds the material, and the bottom of the connecting plate is connected to the rear vehicle via the tension spring. When a turn is required, the connecting plate turns relative to the rear vehicle as the material turns. This relative movement between the connecting plate and the rear vehicle causes the tension spring to adjust from its original length to a bent, stretched state. After the turn, the front and rear vehicles travel in a straight line. The tension spring, now free from external force, returns to its original length and provides a restoring force to the connecting plate, aligning its direction of travel with that of the rear vehicle. This ensures that the extension direction of the connecting plate is consistent with the running direction of the rear vehicle, meaning that the material, the front vehicle, and the rear vehicle all transport the material in a straight line, allowing for stable material transport through coordinated operation between the front and rear vehicles.

[0005] However, during this process, when the external force on the tension spring is large, the tension spring is prone to excessive stretching and failure. This causes the tension spring to fail and cease to provide spring force, thus affecting the service life of the connecting device. Simultaneously, during transportation, when the following vehicle or materials are subjected to impact, the tension spring is prone to excessive bending and failure, leading to displacement between the connecting plate and the following vehicle, or even causing the connecting plate to detach from the following vehicle, affecting the efficiency of material transportation. Utility Model Content

[0006] This utility model provides a connecting device and a transfer system to address the issue of a connecting device between a rear vehicle and materials. The connecting device includes a connecting plate and a tension spring. The top of the connecting plate holds the materials, and the bottom of the connecting plate is connected to the rear vehicle via the tension spring. When a turn is required, the connecting plate turns along with the rear vehicle, causing the tension spring to adjust from its original length to a bent, stretched state. After the turn is completed, the front and rear vehicles travel in a straight line. The tension spring, having lost external force, returns to its original length and provides a restoring force to the connecting plate, aligning the connecting plate with the travel direction of the rear vehicle. This ensures that the extension direction of the connecting plate is consistent with the travel direction of the rear vehicle, allowing the connecting plate to cooperate with the front vehicle and align the extension direction of the materials with the travel directions of both vehicles, enabling stable material transport. However, during this process, if the external force on the tension spring is large, the tension spring may become excessively stretched and fail, causing it to lose its spring force and affecting the service life of the connecting device. Meanwhile, during transportation, when the vehicle or materials are subjected to impact, the tension spring may become excessively bent and fail, causing displacement between the connecting plate and the vehicle, or even causing the connecting plate to fall off the vehicle, thus affecting the efficiency of material transportation.

[0007] In a first aspect, this utility model provides a connecting device for mounting on a rear vehicle, the connecting device comprising: The base has one end for supporting materials and the other end for connecting to the rear vehicle. The fixing unit includes a first fixing structure, a second fixing structure, a first sliding structure, and a second sliding structure disposed on the rear vehicle; the first fixing structure and the second fixing structure are fixedly connected to the rear vehicle at intervals along the direction from the front to the rear of the rear vehicle; the first sliding structure is slidably connected to the rear vehicle and disposed within the interval between the first fixing structure and the second fixing structure, and the first sliding structure is used to move towards or away from the first fixing structure; the second sliding structure is slidably connected to the rear vehicle and disposed within the interval between the first sliding structure and the second fixing structure, and the second sliding structure is used to move towards or away from the second fixing structure. The driving unit has one end connected to the fixed unit and the other end rotatably connected to the rear vehicle. The driving unit is in contact with the first sliding structure and the second sliding structure and is used to drive the movement of the first sliding structure and the second sliding structure. At least two compression structures are provided. The compression structure is a compression spring. At least one end of the compression structure is connected to the first fixed structure and the other end is connected to the first sliding structure. At least one end of the compression structure is connected to the second fixed structure and the other end is connected to the second sliding structure. A detection unit is disposed on the base or the rear vehicle, and the detection unit is used to detect the rotation angle of the base; The locking unit has one end connected to the rear vehicle and the other end detachably connected to the base. The locking unit is communicatively connected to the detection unit and is used to adjust its own state according to the detection result of the detection unit, so that the locking unit has a first state when the rear vehicle turns and is separated from the base, and a second state when the rear vehicle moves in a straight line and is connected to the base.

[0008] Beneficial effects: By setting up a base, fixing unit, driving unit, compression structure, detection unit, and locking unit, when the rear vehicle turns, driven by the material, the detection unit detects that the rear vehicle is about to turn and controls the locking unit to be in the first state. The base drives the first sliding structure to slide close to the first fixing structure through the driving unit, and at the same time drives the second sliding structure to slide close to the second fixing structure. This adjusts each compression structure from a relaxed state to a compressed state, so that the extension direction of the base can adapt to the extension direction of the material, thereby improving the coordination between the front and rear vehicles and the reliability of material bearing.

[0009] When the following vehicle completes a turn and begins straight-line transport, the compression structures lose external force and transition from a compressed to a relaxed state. This allows the base's extension direction to quickly adapt to the material's extension direction, thereby improving the coordination between the following vehicle and the preceding vehicle after a turn, thus enhancing the reliability of material transport. Furthermore, the detection unit controls the locking unit to be in a second state, further improving the relative positional reliability between the base and the following vehicle, thereby enhancing the stability of material transport.

[0010] Meanwhile, by defining the compression structure as a compression spring, compared to the tension springs in related technologies, the compression spring has a limited compression displacement and can provide a larger spring force. Furthermore, since the compression spring only moves along its own axis, compared to related technologies, the compression spring of this invention has a longer lifespan, thereby achieving the technical effect of improving the reliability of the connecting device.

[0011] In one optional implementation, the drive unit includes: The first driving structure has one end fixedly connected to one end of the base, and the other end of the first driving structure passes through the base and is fixedly connected to the other end of the base; The second driving structure is fixedly connected to the first driving structure. The second driving structure is disposed between the first sliding structure and the second sliding structure, and is fitted to both the first sliding structure and the second sliding structure.

[0012] Beneficial effects: By setting a first driving structure and a second driving structure, the first driving structure rotates with the base so that the extension direction of the base adapts to the extension direction of the material and does not affect the transportation of the vehicle behind. The second driving structure rotates with the first driving structure to drive the first sliding structure to move closer to the first fixed structure, and at the same time drive the second sliding structure to move closer to the second fixed structure, further driving the compression of the compression structure.

[0013] In one optional embodiment, the second driving structure is provided, and the second driving structure is coaxially arranged with the first driving structure, and the second driving structure is provided as a cylinder with an elliptical cross-section.

[0014] In one alternative embodiment, there are two second drive structures, each of which is eccentrically positioned relative to the axis of the first drive structure.

[0015] In one alternative implementation, the second driving structure is a cylinder.

[0016] In one optional implementation, the detection unit includes: The first rotating structure is located at the other end of the base and is fixedly connected to the first driving structure coaxially. The second rotating structure is located at the other end of the base and is rotatably connected to the base or the rear vehicle. The second rotating structure is drively connected to the first rotating structure. A detection structure is located at one end of the second rotating structure and is connected to the rear vehicle. The detection structure is used to detect the rotation angle of the second rotating structure.

[0017] Beneficial effects: By setting up a first rotating structure, a second rotating structure, and a detection structure, the first rotating structure can rotate with the base, and the second rotating structure can rotate with the first rotating structure and have the same rotation angle as the first rotating structure, that is, the same rotation angle as the base. The detection structure can know the rotation angle of the base by detecting the rotation angle of the second rotating structure, and use the rotation angle as an indicator to drive the locking unit.

[0018] Specifically, before the base changes from a non-rotating state to a rotating state, the detection structure drives the locking unit to change from the second state to the first state. When the base changes from a rotating state to a non-rotating state, the detection structure drives the locking unit to change from the first state to the second state, thereby achieving the locking between the base and the rear vehicle and thus achieving the technical effect of ensuring the reliability of transported materials.

[0019] In one alternative implementation, the locking unit includes: A connecting structure is provided on the base, and the connecting structure is provided with a connecting hole; A telescopic structure, one end of which is fixedly connected to the rear vehicle, the telescopic structure having a first state in which it is separated from the connecting hole, and a second state in which it is disposed within the connecting hole.

[0020] Beneficial effects: By incorporating a connecting structure and a telescopic structure, the telescopic structure can extend and retract, adjusting its connection with the connecting structure. Specifically, when the following vehicle turns, the telescopic structure separates from the connecting structure, allowing the base to rotate relative to the following vehicle. When the following vehicle completes its turn, the telescopic structure reconnects with the connecting structure, ensuring the base is parallel to the following vehicle, thus improving the stability of the connecting device for material transport.

[0021] In one alternative implementation, the telescopic structure includes: The telescopic component is fixed at one end to the rear vehicle; The guide member has one end connected to the telescopic member, and the other end of the guide member has the first state and the second state.

[0022] In one alternative embodiment, a cross-section is made along the radial direction of the first drive structure, and the cross-section is in the shape of an "I".

[0023] Beneficial effect: By defining a cross section along the radial direction of the first drive structure, the cross section is in the shape of an "I" to fix the first drive structure to one end of the base through the top of the "I" shape, and the bottom of the "I" shape is used to fix the first rotating structure.

[0024] Secondly, this utility model also provides a transfer system, comprising: The aforementioned connecting device; The rear vehicle is connected to the connecting device.

[0025] Beneficial effects: Since the transfer system includes a connecting device, it has the same effect as the connecting device, which will not be elaborated here. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the connection device in this embodiment; Figure 2 for Figure 1 Top view of the connecting device shown; Figure 3 for Figure 1 The bottom view of the connecting device shown; Figure 4 for Figure 1 Side view of the connecting device shown.

[0028] Explanation of reference numerals in the attached figures: 1. Base; 2. Fixed unit; 201. First fixed structure; 202. Second fixed structure; 203. First sliding structure; 204. Second sliding structure; 3. Drive unit; 301. First drive structure; 302. Second drive structure; 4. Compression structure; 5. Detection unit; 501. First rotating structure; 502. Second rotating structure; 503. Detection structure; 6. Locking unit; 601. Connection structure; 602. Telescopic structure; 6021. Telescopic component; 6022. Guide component; 7. Guiding structure. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] The following is combined Figures 1 to 4 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, in one aspect, a connecting device is provided for mounting on a rear vehicle, the connecting device comprising: Base 1, one end is used to support materials, and the other end of base 1 is used to connect to the rear vehicle; The fixing unit 2 includes a first fixing structure 201, a second fixing structure 202, a first sliding structure 203, and a second sliding structure 204 disposed on the rear vehicle. Along the direction from the front to the rear of the rear vehicle, the first fixing structure 201 and the second fixing structure 202 are fixedly connected to the rear vehicle at intervals. The first sliding structure 203 is slidably connected to the rear vehicle and disposed within the interval between the first fixing structure 201 and the second fixing structure 202, and is used to move towards or away from the first fixing structure 201. The second sliding structure 204 is slidably connected to the rear vehicle and disposed within the interval between the first sliding structure 203 and the second fixing structure 202, and is used to move towards or away from the second fixing structure 202. The drive unit 3 is connected to the fixed unit 2 at one end and to the rear vehicle at the other end. The drive unit 3 is in contact with the first sliding structure 203 and the second sliding structure 204 and is used to drive the movement of the first sliding structure 203 and the second sliding structure 204. Compression structure 4, at least two of them are provided. Compression structure 4 is a compression spring. One end of at least one compression structure 4 is connected to the first fixed structure 201 and the other end is connected to the first sliding structure 203. One end of at least one compression structure 4 is connected to the second fixed structure 202 and the other end is connected to the second sliding structure 204. The detection unit 5 is located on the base 1 or the rear vehicle and is used to detect the rotation angle of the base 1. The locking unit 6 has one end for connecting to the rear vehicle and the other end for detaching from the base 1. The locking unit 6 is communicatively connected to the detection unit 5 and is used to adjust its own state according to the detection result of the detection unit 5, so that the locking unit 6 has a first state of being separated from the base 1 when the rear vehicle turns, and a second state of being connected to the base 1 when the rear vehicle moves in a straight line.

[0032] In the connection device of this embodiment, by setting a base 1, a fixing unit 2, a driving unit 3, a compression structure 4, a detection unit 5, and a locking unit 6, when the rear vehicle turns, under the drive of the material, when the detection unit 5 detects that the rear vehicle is about to turn, it controls the locking unit 6 to be in the first state. The base 1 drives the first sliding structure 203 to slide close to the first fixing structure 201 through the driving unit 3, and at the same time drives the second sliding structure 204 to slide close to the second fixing structure 202, so that each compression structure 4 is adjusted from the relaxed state to the compressed state, so that the extension direction of the base 1 can adapt to the extension direction of the material, thereby achieving the technical effect of improving the coordination between the front and rear vehicles and the reliability of material bearing.

[0033] When the following vehicle completes its turn and begins straight-line transport, each compression structure 4 loses external force and transitions from a compressed state to a relaxed state. This allows the extension direction of the base 1 to quickly adapt to the extension direction of the material, thereby improving the coordination between the following vehicle and the preceding vehicle after the turn, thus enhancing the reliability of material transport. Furthermore, the detection unit 5 controls the locking unit 6 to be in a second state, which further improves the relative positional reliability between the base 1 and the following vehicle, thereby enhancing the stability of material transport.

[0034] Meanwhile, by defining the compression structure 4 as a compression spring, compared to the tension spring in related technologies, the compression spring has a limited compression displacement and can provide a larger spring force. Furthermore, since the compression spring only moves along its own axis, compared to related technologies, the compression spring in this embodiment has a longer lifespan, thereby achieving the technical effect of improving the reliability of the connecting device.

[0035] Among them, combined Figure 3 As shown, in this embodiment, there are four compression structures 4, two of which are located between the first fixed structure 201 and the first sliding structure 203, i.e., along... Figure 2 In the horizontal direction, two compression structures 4 are spaced apart. Two structures are provided between the second fixed structure 202 and the second sliding structure 204, i.e., along... Figure 2 In the horizontal direction, two compression structures 4 are spaced apart. Based on this, the number of connection points between the first fixed structure 201 and the first sliding structure 203, and between the second fixed structure 202 and the second sliding structure 204, can be increased, thereby achieving the technical effect of improving the sliding reliability of the first sliding structure 203 and the second sliding structure 204.

[0036] Furthermore, combined Figure 3 As shown, the two compression structures 4 between the first fixed structure 201 and the first sliding structure 203 are eccentrically positioned relative to the rotation axis of the fixed unit 2. Similarly, the two compression structures 4 between the second fixed structure 202 and the second sliding structure 204 are eccentrically positioned relative to the rotation axis of the fixed unit 2. Based on this, it can be ensured that each compression structure 4 is compressed as driven by the drive unit 3, thereby achieving the technical effect of improving the turning reliability of the connecting device.

[0037] Of course, in other embodiments, the number of compression structures 4 may be adjusted depending on the design of the connecting device. Alternatively, the position of each compression structure 4 may be adjusted.

[0038] Preferably, combined with Figure 3 As shown, the connecting device includes: The guide structure 7 is configured as a guide rod, and there are two guide structures 7. The two guide structures 7 are located on the left and right sides of the compression structure 4. One end of the guide structure 7 is fixedly connected to the first fixed structure 201, and the other end of the guide structure 7 is fixedly connected to the second fixed structure 202. The first sliding structure 203 and the second sliding structure 204 are both sleeved on the guide structure 7. The guide structure 7 improves the movement stability of the first sliding structure 203 and the second sliding structure 204, thereby improving the reliability of the compression structure 4 moving only along its own axial direction.

[0039] Alternatively, the connecting device may not include the guide structure 7.

[0040] Of course, in other embodiments, the number of guide structures 7 may be adjusted depending on the design of the connecting device.

[0041] In addition, combined Figure 2 and Figure 3 As shown, in this embodiment, the driving unit 3 includes: The first drive structure 301 has one end fixedly connected to one end of the base 1, and the other end of the first drive structure 301 passes through the base 1 and is fixedly connected to the other end of the base 1. The second driving structure 302 is fixedly connected to the first driving structure 301. The second driving structure 302 is located between the first sliding structure 203 and the second sliding structure 204, and is fitted to both the first sliding structure 203 and the second sliding structure 204.

[0042] By setting a first driving structure 301 and a second driving structure 302, the first driving structure 301 rotates with the base 1 so that the extension direction of the base 1 adapts to the extension direction of the material and does not affect the transportation of the vehicle behind. The second driving structure 302 rotates with the first driving structure 301 so as to drive the first sliding structure 203 to move closer to the first fixed structure 201, and at the same time drive the second sliding structure 204 to move closer to the second fixed structure 202, further driving the compression structure 4 to compress.

[0043] Among them, combined Figure 3 As shown, in this embodiment, two second drive structures 302 are provided, and each second drive structure 302 is eccentrically positioned relative to the axis of the first drive structure 301. Based on this, the rotation of the first drive structure 301 can drive each second drive structure 302 to rotate around the axis of the first drive structure 301, thereby achieving the technical effect of improving the rotational reliability of the second drive structure 302.

[0044] Preferably, the second driving structure 302 is a cylinder. Based on this, the smoothness of the movement of the first sliding structure 203 along the surface of the second driving structure 302 and the second sliding structure 204 along the surface of the second driving structure 302 can be improved, reducing vibration to the material, thereby achieving the technical effect of improving the reliability of the connecting device.

[0045] Of course, in other embodiments, the number of second drive structures 302 can be adjusted according to the design of the connecting device. When there is only one second drive structure 302, the second drive structure 302 is coaxially arranged with the first drive structure 301, and the second drive structure 302 is a cylinder with an elliptical cross-section. At this time, the second drive structure 302 rotates with the first drive structure 301, and through its elliptical shape, it can drive the first sliding structure 203 to move closer to the first fixed structure 201, while simultaneously driving the second sliding structure 204 to move closer to the second fixed structure 202.

[0046] In other embodiments, the structure of the driving unit 3 can be adjusted according to the different designs of the connecting device. As long as the structure can drive the first sliding structure 203 and the second sliding structure 204 to move, it is within the protection scope of this utility model.

[0047] In addition, in this embodiment, a cross section is made along the radial direction of the first drive structure 301, and the cross section is in the shape of an "I" to fix the first drive structure 301 to one end of the base 1 through the top of the "I" shape, and the bottom of the "I" shape is used to fix the first rotating structure 501.

[0048] Preferably, the base 1 has a through hole so that the other end of the first driving structure 301 passes through the base 1 through the through hole. As an alternative implementation, the base 1 may also have a clearance hole directly on its model, eliminating the need for an additional through hole, both of which are within the protection scope of this utility model.

[0049] Of course, in other embodiments, depending on the design of the connecting device, a cross section is made along the radial direction of the first driving structure 301, and the shape of the cross section is adjusted.

[0050] In addition, combined Figure 4 As shown, in this embodiment, the detection unit 5 includes: The first rotating structure 501 is located at the other end of the base 1 and is coaxially fixedly connected to the first driving structure 301. The second rotating structure 502 is located at the other end of the base 1 and is rotatably connected to the rear vehicle. The second rotating structure 502 is connected to the first rotating structure 501 in a transmission manner. The detection structure 503 is located at one end of the second rotating structure 502 and is connected to the rear vehicle. It is used to detect the rotation angle of the second rotating structure 502.

[0051] The second rotating structure 502 is provided with a fixed seat and is rotatably connected to the fixed seat via a rotating shaft. The second rotating structure 502 is also fixedly connected to the rear vehicle via the fixed seat. Furthermore, a detection structure 503 is disposed on the fixed seat and spaced apart from the second rotating structure 502. The detection structure 503 is connected to the rear vehicle via the fixed seat. Alternatively, the detection structure 503 can be directly connected to the rear vehicle.

[0052] By setting a first rotating structure 501, a second rotating structure 502, and a detection structure 503, the first rotating structure 501 can rotate with the base 1, and the second rotating structure 502 can rotate with the first rotating structure 501 and at the same rotation angle as the first rotating structure 501, that is, at the same rotation angle as the base 1. The detection structure 503 can know the rotation angle of the base 1 by detecting the rotation angle of the second rotating structure 502, and use the rotation angle as an indicator to drive the locking unit 6.

[0053] Specifically, before the base 1 changes from a non-rotating state to a rotating state, the detection structure 503 drives the locking unit 6 to change from a second state to a first state. When the base 1 changes from a rotating state to a non-rotating state, the detection structure 503 drives the locking unit 6 to change from a first state to a second state, thereby achieving the locking between the base 1 and the rear vehicle and thus achieving the technical effect of ensuring the reliability of transported materials.

[0054] Preferably, both the first rotating structure 501 and the second rotating structure 502 are gears, and the first rotating structure 501 and the second rotating structure 502 mesh with each other to realize the transmission connection between the first rotating structure 501 and the second rotating structure 502.

[0055] Meanwhile, the detection structure 503 is an encoder used to detect the rotation angle of the second rotating structure 502.

[0056] As an alternative implementation, the fixed base may not be provided, and the second rotating structure 502 may be directly rotatably connected to the rear vehicle, all of which are within the protection scope of this utility model.

[0057] Of course, in other embodiments, the specific types of the first rotating structure 501, the second rotating structure 502, and the detection structure 503 can be adjusted according to the different designs of the connecting device. For example, the first rotating structure 501 and the second rotating structure 502 can be pulleys, and the transmission connection between the first rotating structure 501 and the second rotating structure 502 can be realized by a belt. The detection structure 503 can be an angle sensor. All of these are within the protection scope of this utility model.

[0058] In addition, combined Figure 1 As shown, in this embodiment, the locking unit 6 includes: A connecting structure 601 is provided on the base 1, and the connecting structure 601 is provided with a connecting hole; wherein, the connecting hole passes through one end and the other end of the base 1; The telescopic structure 602 is fixedly connected to the rear vehicle at one end. The telescopic structure 602 has a first state of being separated from the connection hole and a second state of being disposed in the connection hole.

[0059] By setting up a connecting structure 601 and a telescopic structure 602, the telescopic structure 602 can extend and retract, thereby adjusting the connection state between it and the connecting structure 601. When the following vehicle turns, the telescopic structure 602 separates from the connecting structure 601, allowing the base 1 to rotate relative to the following vehicle. When the following vehicle completes its turn, the telescopic structure 602 reconnects with the connecting structure 601, so that the base 1 is set parallel to the following vehicle, thereby achieving the technical effect of improving the stability of the connecting device for material transportation.

[0060] Of course, in other embodiments, the structure of the locking unit 6 may be adjusted according to the design of the connecting device, for example, the connecting hole may be located on the side of the base 1, all of which are within the protection scope of this utility model.

[0061] As an alternative implementation, the structure of the locking unit 6 can be adjusted. For example, a magnet can be provided on the base 1 and an electromagnet can be provided on the rear vehicle. The state of the locking unit 6 can be adjusted by energizing and de-energizing the electromagnet.

[0062] In addition, combined Figure 1 As shown, in this embodiment, the telescopic structure 602 includes: Telescopic component 6021, one end of which is fixed to the rear vehicle; The guide member 6022 is connected to the telescopic member 6021 at one end, and the other end of the guide member 6022 has a first state and a second state.

[0063] Among them, the telescopic component 6021 is a hydraulic cylinder, the guide component 6022 is a positioning pin, and the connecting structure 601 is a cylindrical connecting component with a positioning pin hole.

[0064] Of course, in other embodiments, the types of telescopic member 6021 and guide member 6022 can be adjusted according to the different designs of the connecting device. For example, telescopic member 6021 is an electric telescopic rod, guide member 6022 is a common rod-shaped structure, and connecting structure 601 is a block-shaped connector with a positioning pin hole.

[0065] As an alternative implementation, the guide member 6022 may not be provided on the telescopic member 6021.

[0066] Furthermore, in this embodiment, the connecting device includes: The control unit is communicatively connected to both the detection unit 5 and the locking unit 6. The control unit controls the locking unit 6 to be in either the first state or the second state based on the detection result of the detection unit 5.

[0067] In this embodiment, the control unit is a programmable logic controller (PLC). In a variant embodiment, the control unit can be a host computer, such as a PC.

[0068] Of course, in other embodiments, depending on the design of the connecting device, the connecting device may not include a control unit, and the detection unit 5 may have a control function to directly control the state of the locking unit 6.

[0069] According to an embodiment of the present invention, another aspect provides a transfer system, comprising: The connection device in this embodiment; The rear vehicle connects to the connecting device.

[0070] The specific working process of the transfer system in this embodiment is as follows: When the following vehicle is about to turn, the detection unit 5 detects that the second rotating structure 502 has a rotational tendency. Alternatively, the detection unit 5 can detect the rotational tendency of the material. That is, the control unit controls the locking unit 6 to be in the first state, and the base 1 rotates with the rotation of the material, and the compressor structure is in a compression state.

[0071] After the following vehicle completes the turning operation, the compression structure 4 loses external force and immediately returns to its original position, driving the base 1 to immediately return to the center. The detection unit 5 detects that the second rotating structure 502 has returned to its original position, that is, the control unit controls the locking unit 6 to adjust from the first state to the second state, so that the relative position between the base 1 and the following vehicle is stable, thereby achieving the technical effect of improving the stability of material transportation.

[0072] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connecting device for mounting on a rear vehicle, characterized in that, The connecting device includes: The base (1) has one end for supporting materials and the other end for connecting to the rear vehicle; The fixing unit (2) includes a first fixing structure (201), a second fixing structure (202), a first sliding structure (203), and a second sliding structure (204) disposed on the rear vehicle; along the direction from the front to the rear of the rear vehicle, the first fixing structure (201) and the second fixing structure (202) are fixedly connected to the rear vehicle at intervals; the first sliding structure (203) is slidably connected to the rear vehicle and disposed within the interval between the first fixing structure (201) and the second fixing structure (202), and the first sliding structure (203) is used to move towards or away from the first fixing structure (201); the second sliding structure (204) is slidably connected to the rear vehicle and disposed within the interval between the first sliding structure (203) and the second fixing structure (202), and the second sliding structure (204) is used to move towards or away from the second fixing structure (202); The driving unit (3) is connected at one end to the fixed unit (2) and at the other end to the rear vehicle. The driving unit (3) is in contact with the first sliding structure (203) and the second sliding structure (204) and is used to drive the movement of the first sliding structure (203) and the second sliding structure (204). Compression structure (4), at least two of them are provided. The compression structure (4) is a compression spring. At least one end of the compression structure (4) is connected to the first fixed structure (201) and the other end is connected to the first sliding structure (203). At least one end of the compression structure (4) is connected to the second fixed structure (202) and the other end is connected to the second sliding structure (204). A detection unit (5) is provided on the base (1) or the rear vehicle, and the detection unit (5) is used to detect the rotation angle of the base (1); The locking unit (6) has one end connected to the rear vehicle and the other end detached from the base (1). The locking unit (6) is communicatively connected to the detection unit (5) and is used to adjust its own state according to the detection result of the detection unit (5) so that the locking unit (6) has a first state when the rear vehicle turns and is separated from the base (1), and a second state when the rear vehicle moves in a straight line and is connected to the base (1).

2. The connecting device according to claim 1, characterized in that, The driving unit (3) includes: The first drive structure (301) has one end fixedly connected to one end of the base (1), and the other end of the first drive structure (301) passes through the base (1) and is fixedly connected to the other end of the base (1). The second driving structure (302) is fixedly connected to the first driving structure (301). The second driving structure (302) is located between the first sliding structure (203) and the second sliding structure (204), and is fitted to both the first sliding structure (203) and the second sliding structure (204).

3. The connecting device according to claim 2, characterized in that, The second driving structure (302) is provided, and the second driving structure (302) is coaxially arranged with the first driving structure (301). The second driving structure (302) is provided as a cylinder with an elliptical cross section.

4. The connecting device according to claim 2, characterized in that, There are two second drive structures (302), and each second drive structure (302) is eccentrically positioned relative to the axis of the first drive structure (301).

5. The connecting device according to claim 4, characterized in that, The second driving structure (302) is a cylinder.

6. The connecting device according to any one of claims 2-5, characterized in that, The detection unit (5) includes: The first rotating structure (501) is located at the other end of the base (1) and is coaxially fixedly connected to the first driving structure (301); The second rotating structure (502) is located at the other end of the base (1) and is rotatably connected to the rear vehicle. The second rotating structure (502) is connected to the first rotating structure (501) in a transmission manner. A detection structure (503) is disposed at one end of the second rotating structure (502). The detection structure (503) is connected to the rear vehicle and is used to detect the rotation angle of the second rotating structure (502).

7. The connecting device according to any one of claims 1-5, characterized in that, The locking unit (6) includes: A connecting structure (601) is provided on the base (1), and the connecting structure (601) is provided with a connecting hole; The telescopic structure (602) is fixedly connected to the rear vehicle at one end. The telescopic structure (602) has a first state in which it is separated from the connection hole, and a second state in which it is disposed within the connection hole.

8. The connecting device according to claim 7, characterized in that, The telescopic structure (602) includes: The telescopic component (6021) is fixed at one end to the rear vehicle; The guide (6022) is connected at one end to the telescopic member (6021), and the other end of the guide (6022) has the first state and the second state.

9. The connecting device according to any one of claims 2-5, characterized in that, A cross section is made along the radial direction of the first driving structure (301), and the cross section is in the shape of an "I".

10. A transfer system, characterized in that, include: The connecting device according to any one of claims 1-9; The rear vehicle is connected to the connecting device.

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