Vehicle body connecting structure and transport vehicle

Abstract

The utility model discloses a car body connecting structure, relates to the field of car coupler connection, overcomes the defects of troublesome connection and complex structure between car couplers in the prior art, and adopts the technical scheme that the car body connecting structure comprises two car couplers which are respectively connected with two car bodies, each car coupler comprises a shell and an elastic element, each shell is provided with a connecting groove, a connecting block and a movably-installed clamping piece, each clamping piece is provided with a locking position and an unlocking position, the elastic elements drive the clamping pieces to be kept in the locking positions, and when the connecting block on one shell is inserted into the connecting groove in the other shell, the clamping pieces are locked in the unlocking positions. The connecting block drives the clamping piece to be switched from the locking position to the unlocking position so as to avoid the connecting block, and when the clamping piece is located at the locking position, the connecting block is blocked so as to prevent the connecting block from being disengaged from the connecting groove. The utility model is mainly used for solving the problems of troublesome connection and complex structure between car couplers.

Description

Technical Field

[0001] The utility model relates to a connecting coupler, in particular to a vehicle body connecting structure and a transport vehicle. Background Art

[0002] Rail vehicles are currently widely used in agriculture. Through rail vehicles, some agricultural equipment and fruits and vegetables can be transported and carried. For example, in some large vegetable planting bases, a rail vehicle system is laid. The rail vehicle is used to quickly transport the freshly picked vegetables from the field to the packaging and storage area, improving the transportation efficiency and reducing the damage of vegetables during transportation. Another example is in some mountain orchards. Due to the complex terrain, it is inconvenient for vehicles to pass. Rail vehicles are installed to transport fruits, fertilizers and farm tools. The rail vehicle runs smoothly along the preset track, can adapt to the slope of the mountain, and solves the transportation problem. There are also some flower plantations that use rail vehicles to carry watering, fertilizing and pruning equipment, and perform precise maintenance operations on the flowers along the track, improving the work efficiency and maintenance quality. And in some large modern farms, rail vehicles are used to transport feed to the livestock breeding area, which is convenient and fast, and reduces the labor intensity of manual work.

[0003] However, the existing agricultural rail vehicle couplers have some deficiencies. For example, when connecting the couplers of the rail vehicle and the trailer, manual connection and fixation are required, and it is also necessary to check whether the connection between the couplers is firm; moreover, the structure of the coupler is complex, and the manufacturing and maintenance costs of the coupler are relatively high; the couplers are connected by the "handshake" method of the movable claws, and the movable claws are fixed after connection, which puts relatively high requirements on the fixed part of the movable claws and also increases the difficulty of manufacturing and maintenance. Content of the Utility Model

[0004] In order to overcome the deficiencies of the troublesome connection and complex structure between the existing couplers, the utility model provides a vehicle body connecting structure, which can solve the problems of troublesome connection and complex structure between the couplers.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: a vehicle body connecting structure, including two couplers respectively connected to two vehicle bodies. Each coupler includes a housing and an elastic element. The housing is provided with a connection groove, a connection block and a snap member movably installed. The snap member has a locking position and an unlocking position. The elastic element drives the snap member to stay in the locking position. During the connection process of the two couplers, when the connection block of one coupler inserts into the connection groove of the other coupler, the connection block drives the snap member on the other coupler to switch from the locking position to the unlocking position to avoid the connection block. When the connection block is inserted into the connection groove of the other coupler in place, the elastic elements on the two couplers drive their respective snap members to switch to the locking position to prevent the connection block from disengaging from the connection groove of the other coupler.

[0006] After adopting the above technical solution, the utility model has the following advantages: when it is necessary to connect two couplers to each other, only need to bring the two couplers closer to each other, and the clamping parts on the two couplers will simultaneously abut against the connecting blocks of the other coupler. At this time, the clamping parts overcome the elastic force of the elastic elements on the couplers, so that the clamping parts can be switched from the locked position to the unlocked position, so that the connecting blocks can enter the connecting grooves of the other coupler. When the connecting blocks enter the connecting grooves of the other coupler, the clamping parts will be switched to the locked position by the elastic force of the elastic elements, and the clamping parts in the locked position will prevent the connecting blocks from disengaging from the connecting grooves of the other coupler, so that the two couplers are kept connected. Thus, the connection between the car bodies is completed, and there is no need to manually re-fix and connect the two couplers. And because the movably connected clamping parts and the fixedly connected connecting blocks are connected to each other, compared with the traditional connection of two movably connected connecting claws, the stability is higher. And only one movably connected clamping part and an elastic element are used, and the rest of the components are fixedly connected, so the structure is very simple and the operation is also very simple, reducing the manufacturing and design costs, and also reducing the risk of damage and the subsequent maintenance and replacement costs.

[0007] Further, the clamping part is rotatably connected to the housing.

[0008] Adopting the foregoing technical solution, when the clamping part is rotatably connected to the housing, there is a positioning cavity in the housing for the clamping part to rotate in. When the two couplers are connected, both clamping parts are in the locked position. The clamping parts in the locked position will prevent the connecting blocks in the connecting grooves from disengaging from the connecting position. The clamping parts are more convenient to unlock when rotatably connected, and the structure is simple, only need to design a rotation axis between the clamping part and the housing.

[0009] Further, a handle is fixedly connected to the clamping part, and both ends of the elastic element are fixedly connected to the handle and the housing or the elastic element is fixedly connected to the clamping part and the housing.

[0010] Adopting the foregoing technical solution, by fixedly connecting a handle to the clamping part, it is convenient to manually operate to unlock the two clamping parts, and by fixedly connecting the elastic element to the handle and the housing, the installation is simpler, only need to directly fixedly connect both ends of the elastic element to the handle and the housing respectively.

[0011] Further, a limiting hole is provided on the housing, and one end of the handle extends into the housing through the limiting hole to be connected to the clamping part, and the hole wall of the limiting hole limits the rotation angle of the handle.

[0012] Adopting the foregoing technical solution, the rotation of the handle is limited by the hole wall of the limiting hole, so that the handle will not rotate excessively due to the elastic force of the elastic element, preventing the misalignment of the handle.

[0013] Further, the clamping part is a semi-circular ring, and the rotation axis of the clamping part is a semi-cylindrical body fixedly arranged on the housing.

[0014] With the foregoing technical solution, since the clamping member is a semi-circular ring and the rotation axis of the clamping member is a semi-cylindrical shape fixedly arranged on the housing, the two clamping members and the rotation axis can form a complete circle after the couplers are connected. Due to the strong impact resistance of the complete circle, when the couplers displace relative to each other, the two connecting blocks abut against the complete circle, dispersing the impact force into two component forces, thereby withstanding a stronger impact force and making the connection between the two couplers more stable.

[0015] Furthermore, during the connection process of the two couplers, when the clamping members in the two couplers are in the locked position, the docking surfaces of the two semi-circular rings and the docking surfaces of the two semi-cylinders are arranged in a staggered manner.

[0016] With the foregoing technical solution, when the clamping member is in the locked position, by arranging the docking surfaces of the two semi-circular rings and the docking surfaces of the two semi-cylinders in a staggered manner, the two semi-circular rings will not easily separate. Only when the docking surfaces of the two semi-circular rings rotate to be coplanar with the docking surfaces of the two semi-cylinders can the two semi-circular rings be separated in the radial direction when they are coplanar, causing the two clamping members to separate and avoiding the connecting block so that the connecting block can be disengaged from the connecting groove.

[0017] Furthermore, an installation groove is provided in the housing, the clamping member is slidably installed in the installation groove, and an elastic element is arranged between the bottom of the installation groove and the clamping member.

[0018] With the foregoing technical solution, by providing an installation groove in the housing, the clamping member is slidably installed in the installation groove, and an elastic element is arranged between the bottom of the installation groove and the clamping member. When the couplers are connected, the connecting block is slidably connected to the housing through the sliding of the clamping member in the installation groove. After the connecting block enters the connecting groove of the other coupler, the connecting block is restricted by the clamping member, making the connecting block unable to disengage from the connecting groove of the other party, completing the connection between the couplers. Moreover, the movement mode of the sliding connection is relatively simpler. The movement mode is simple and can be designed such that the sliding direction of the clamping member is perpendicular to the connection direction of the couplers, so that the relative movement between the couplers after the clamping member enters the clamping position will not affect the connection situation of the connecting block. Only by manually unlocking the clamping member along the sliding direction first can the two connecting blocks be switched from the connected position to the disengaged position.

[0019] Furthermore, the coupler further includes a fixing member and a reset element. The fixing member is fixedly connected to the vehicle body, the housing is rotatably connected to the fixing member, and the reset element is used to drive the housing to rotate and reset.

[0020] With the foregoing technical solution, through the rotational connection between the fixing member and the housing, the connection between the two couplers can be kept stable when the rail vehicle turns, the front vehicle can pull the rear vehicle to turn smoothly, and a reset element is arranged therebetween to help the housing return to the correct position after the two couplers pass through the curve.

[0021] Further, the reset element is a reset torsion spring. When the reset element is a reset torsion spring, one end of the reset torsion spring is fixed to the housing, and the other end is fixed to the fixing member; the reset element is a reset spring. When using a reset spring, at least two reset springs need to be used. One part of the reset springs is fixed in one rotation direction of the housing and connected to the fixing member, and the other part of the reset springs is fixed in the other rotation direction of the housing and connected to the fixing member.

[0022] With the foregoing technical solution, when the reset element is a reset torsion spring, one end of the reset torsion spring is fixed to the housing, and the other end is fixed to the fixing member. When the housing rotates relative to the fixing member in two directions, the reset torsion spring will deform and generate an elastic force, enabling the torsion spring to drive the housing to rotate and reset; when using a reset spring, at least two reset springs need to be used. One part of the reset springs is fixed in one rotation direction of the housing and connected to the fixing member, and the other part of the reset springs is fixed in the other rotation direction of the housing and connected to the fixing member, so that the elastic force of the reset springs ensures that after the rail vehicle passes through a curve, the housing can only rotate and reset in two directions.

[0023] Further, the cross-section of the connecting block gradually decreases in the direction away from the housing to which it is fixed, and is generally pyramid-shaped.

[0024] With the foregoing technical solution, for the coupler of the prior art, during each connection process, the couplers of the rail vehicle and the trailer need to be manually aligned. Moreover, the docking requirements are high. It is necessary to align in height and also in the horizontal direction to be able to connect, and the requirements for the track are also relatively high, with insufficient applicability. In this solution, by designing the cross-section of the connecting block in the up-down direction and the front-back direction to be tapered, the rail vehicle can allow a certain degree of height difference in the up-down direction and distance difference in the front-back direction, facilitating the connection between the two couplers, and increasing the applicability and practicality of the coupler connection.

[0025] Based on the same concept, the present utility model also provides a transport vehicle, including at least two vehicle bodies and at least one vehicle body connection structure in any of the foregoing technical solutions. Among them, a vehicle body connection mechanism is connected between every two vehicle bodies.

[0026] With the foregoing technical solution, the connection process of the transport vehicle using this vehicle body connection structure can achieve automatic locking, so it is more convenient and efficient. Moreover, fewer components are used and the structure is simple, making the connection between the two vehicle bodies more firm, not easily damaged, and having a longer service life than traditional couplers. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following further describes the present utility model with reference to the drawings:

[0028] Figure 1Schematic diagram of butt joint for Embodiment 1 of a vehicle body connection structure of the present utility model;

[0029] Figure 2 Schematic diagram of disengagement for Embodiment 1 of a vehicle body connection structure of the present utility model;

[0030] Figure 3 Overall application schematic diagram for Embodiment 1 of a vehicle body connection structure of the present utility model;

[0031] Figure 4 It is Figure 3 A - A cross - sectional view of;

[0032] Figure 5 Overall butt - joint schematic diagram for Embodiment 1 of a vehicle body connection structure of the present utility model;

[0033] Figure 6 Schematic diagram of butt joint for Embodiment 2 of a vehicle body connection structure of the present utility model;

[0034] Figure 7 Schematic diagram of disengagement for Embodiment 2 of a vehicle body connection structure of the present utility model;

[0035] Figure 8 Overall butt - joint schematic diagram for Embodiment 3 of a vehicle body connection structure of the present utility model.

[0036] Description of the drawings: 1. Coupler; 11. Connection groove; 12. Housing; 13. Fixing part; 2. Clamping part; 3. Elastic element; 4. Connection block; 5. Handle; 6. Reset element; 6A. Reset torsion spring; 6B. Reset spring; 7. Rotating shaft; 8. Reset rod. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0038] In the description and claims of the present utility model, terms such as "first", "second", etc. (if any) are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used before a certain technical feature for distinction, it does not necessarily imply the existence of "first". It should be understood that in the present utility model, "including" and "having" and any of their variants are intended to cover non-exclusive inclusion. It should be understood that in the present utility model, "a plurality of" means two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships may exist. For example, X and / or Y may represent: X exists alone, X and Y exist simultaneously, and Y exists alone. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "Including X, Y, and Z" and "including X, Y, Z" mean that X, Y, and Z are all included. "Including X, Y, or Z" means including any one of X, Y, and Z. "Including X, Y, and / or Z" means including any one or any two or all three of X, Y, and Z.

[0039] The technical solution of the present utility model will be described in detail below with specific embodiments. These specific embodiments can be combined or replaced according to the actual situation. For the same or similar concepts or processes, they may not be described again in some embodiments.

[0040] Embodiment 1:

[0041] As Figures 1 to 5 shown, the present utility model provides a vehicle body connection structure, including two couplers 1 respectively connected to two vehicle bodies. Each coupler 1 includes a housing 12 and an elastic element 3. The housing 12 is provided with a connection groove 11, a connection block 4, and a clamping member 2 movably installed. The clamping member 2 has a locking position and an unlocking position. The elastic element 3 drives the clamping member 2 to remain in the locking position. During the connection process of the two couplers 1, when the connection block 4 of one coupler 1 is inserted into the connection groove 11 of the other coupler 1, the connection block 4 on one coupler 1 drives the clamping member 2 on the other coupler 1 to switch from the locking position to the unlocking position to avoid the connection block 4. After the connection block 4 is inserted into the connection groove 11 of the other coupler 1 in place, the elastic elements 3 on the two couplers 1 drive their respective clamping members 2 to switch to the locking position to prevent the connection block 4 from disengaging from the connection groove of the other coupler.

[0042] After adopting the above technical solution, the utility model has the following advantages: when it is necessary to connect two couplers to each other, only need to bring the two couplers closer to each other, and the clamping members 2 on the two couplers will simultaneously abut against the connecting blocks 4 of the other coupler. At this time, the clamping member 2 overcomes the elastic force of the elastic element 3 on the coupler, so that the clamping member 2 can be switched from the locked position to the unlocked position, so that the connecting block 4 can enter the connecting groove 11 of the other coupler. After the connecting block 4 enters the connecting groove 11 of the other coupler, the clamping member 2 will be switched to the locked position by the elastic force of the elastic element 3, and the clamping member 2 in the locked position will prevent the connecting block 4 from disengaging from the connecting groove 11 of the other coupler, so that the two couplers remain connected. Thus, the connection is completed, and there is no need to manually re-fix and connect the two couplers again. And because the movably connected clamping member 2 and the fixedly connected connecting block 4 are connected to each other, compared with the traditional connection of two movably connected connecting claws, the stability is higher, and only one movably connected clamping member 2 and an elastic element 3 are used, and the rest of the components are fixedly connected, so the structure is very simple, and the operation is also very simple, reducing the manufacturing and design costs, and also reducing the risk of damage and the subsequent maintenance and replacement costs.

[0043] Further, the cross-section of the connecting block 4 gradually decreases in the direction away from its fixed housing 12, and is generally pyramidal in shape.

[0044] By adopting the foregoing technical solution, it solves the problems in the prior art that in each connection process of the coupler, it is necessary to manually align the couplers of the rail vehicle and the trailer, and the docking requirements are high, and it is necessary to align in height and also in the horizontal direction to be able to connect, and the requirements for the track are also relatively high, and the applicability is insufficient, etc. In this solution, by designing the cross-section of the connecting block 4 in the up-down direction and the front-back direction to be tapered, the rail vehicle can allow a certain degree of up-down height difference and front-back distance difference, which is convenient for the connection between the two couplers, and increases the applicability and practicality of the coupler connection.

[0045] Embodiment 2:

[0046] As Figures 1 to 2 shown: on the basis of Embodiment 1, the clamping member 2 is rotatably connected to the housing 12.

[0047] By adopting the foregoing technical solution, when the clamping member 2 is rotatably connected to the housing 12, there is a positioning cavity in the housing 12 for the clamping member 2 to rotate in. When the two couplers 1 are connected, both clamping members 2 are in the locked position. The clamping member 2 in the locked position will prevent the connecting block 4 in the connecting groove 11 from disengaging from the connection position. The rotation connection of the clamping member 2 is more convenient when unlocking, and the structure is simple, and only a rotation axis needs to be designed between the clamping member 2 and the housing 12.

[0048] Further, the clamping member 2 is a semi-circular ring, and the rotating shaft of the clamping member 2 is a semi-cylindrical shape fixedly arranged on the housing 12.

[0049] With the foregoing technical solution, since the clamping member 2 is a semi-circular ring and the rotating shaft of the clamping member 2 is a semi-cylindrical shape fixedly arranged on the housing 12, two clamping members 2 and two rotating shafts can form a complete circle after the couplers are connected. Since the complete circle has strong anti-impact performance, when the couplers displace relative to each other, the two connecting blocks 4 abut against the complete circle, dispersing the impact force into two component forces, thereby withstanding stronger impact forces and making the connection between the two couplers more stable.

[0050] Further, during the connection process of the two couplers 1, when the clamping members 2 in the two couplers 1 are in the locked position, the butt joint surfaces of the two semi-circular rings are arranged staggered with the butt joint surfaces of the two semi-cylinders.

[0051] With the foregoing technical solution, when the clamping member 2 is in the locked position, by arranging the butt joint surfaces of the two semi-circular rings staggered with the butt joint surfaces of the two semi-cylinders, the two semi-circular rings will not easily separate. Only when the butt joint surfaces of the two semi-circular rings rotate to be coplanar with the butt joint surfaces of the two semi-cylinders, the two semi-circular rings can be disengaged in the radial direction when they are coplanar, causing the two clamping members 2 to separate and avoiding the connecting block 4 so that the connecting block 4 disengages from the connecting groove 11.

[0052] Specifically, the butt joint surface of the semi-circular ring refers to the axial plane facing each other of the two semi-circular rings after the two couplers are connected, and the butt joint surface of the semi-cylinder refers to the axial circular ring plane facing each other of the two semi-cylinders after the two couplers are connected.

[0053] Embodiment 3:

[0054] On the basis of Embodiment 2, a handle 5 is fixedly connected to the clamping member 2, and both ends of the elastic element 3 are fixedly connected to the handle 5 and the housing 12.

[0055] With the foregoing technical solution, by fixedly connecting the handle 5 to the clamping member 2, it is convenient to manually operate to unlock the two clamping members 2, and by fixedly connecting the elastic element 3 to the handle 5 and the housing 12, the installation is made simpler, and only the two ends of the elastic element 3 need to be directly fixedly connected to the handle 5 and the housing 12 respectively.

[0056] Further, a limiting hole is provided on the housing 12, and one end of the handle 5 extends into the housing 12 through the limiting hole and is connected to the clamping member 2, and the hole wall of the limiting hole restricts the rotation angle of the handle 5.

[0057] With the foregoing technical solution, the rotation of the handle 5 is restricted by the hole wall of the limiting hole, so that the handle 5 will not rotate excessively due to the elastic force of the elastic element 3, preventing the misalignment of the handle 5.

[0058] Embodiment 4:

[0059] like Figures 6 to 7 As shown, on the basis of embodiment 1, a mounting groove is provided in the housing 12, the clamping member 2 is slidably installed in the mounting groove, and the elastic element 3 is provided between the groove bottom of the mounting groove and the clamping member 2.

[0060] By adopting the above-mentioned technical scheme, a mounting groove is provided in the shell 12, so that the clamping part 2 is slidably installed in the mounting groove, and the elastic element 3 is provided between the groove bottom of the mounting groove and the clamping part 2, so that when the couplers 1 are connected, the sliding of the clamping part 2 in the mounting groove makes the clamping part 2 slidably connected relative to the shell 12, and after the connecting block 4 enters the connecting groove 11 of the other coupler 1, the connecting block 4 is restricted by the clamping part 2, so that the connecting block 4 cannot be separated from the connecting groove 11 of the other coupler, thereby completing the connection between the couplers 1, and the movement mode of the sliding connection is relatively simpler, and the movement mode is simple, and can be designed so that the sliding direction of the clamping part 2 is perpendicular to the connection direction of the coupler 1, so that the relative movement between the couplers 1 after the clamping part 2 enters the clamping position will not affect the connection of the connecting block 4, and only by manually unlocking the clamping part 2 along the sliding direction can the two connecting blocks 4 be switched from the connection position to the disengagement position.

[0061] Specifically, the elastic element 3 is installed in the installation groove, and the thrust of the elastic element 3 is used to keep the clamp 2 in the locked position; the opening direction of the installation groove is the up and down direction. When the connection direction of the coupler 1 is to the right, the opening direction of the installation groove is downward, and when the connection direction of the coupler is to the right, the opening direction of the installation groove is upward.

[0062] Embodiment 5:

[0063] On the basis of Example 1, the coupler 1 further comprises a fixing member 13 and a reset element 6, the fixing member 13 is fixedly connected to the vehicle body, the housing 12 is rotatably connected to the fixing member 13, and the reset element 6 is used to drive the housing 12 to rotate and reset.

[0064] By adopting the above-mentioned technical solution, through the rotational connection between the fixing member 13 and the shell 12, the connection between the two couplers 1 can be kept stable when the rail vehicle turns, the front vehicle can pull the rear vehicle to turn smoothly, and the reset element 6 is arranged therebetween to enable the two couplers 1 to help the shell 12 return to the correct position after passing the curve.

[0065] Specifically, the fixing member 13 and the housing 12 are rotatably connected together via the rotating shaft 7 .

[0066] Further, such as Figures 3 to 5 As shown, the reset element 6 is a reset torsion spring 6A. When the reset element 6 uses the reset torsion spring 6A, one end of the reset torsion spring 6A is fixed to the housing 12 , and the other end is fixed to the fixing member 13 .

[0067] With the foregoing technical solution, when the reset element 6 is a reset torsion spring 6A, one end of the reset torsion spring 6A is fixed on the housing 12, and the other end is fixed on the fixing member 13, which helps the housing 12 to return to the correct position after the rail vehicle passes through a curve.

[0068] Specifically, the telescopic amount of the used reset torsion spring 6A is large enough, that is, the number of turns of the corresponding reset torsion spring 6A is large enough, or the wire diameter of the reset torsion spring 6A is thick enough, which can provide a restoring torque when the housing 12 rotates in two rotational directions, so as to help the housing 12 return to the correct position. In actual use, a reset rod 8 extending to the fixing member 13 is fixedly arranged on the housing 12, and the reset rod 8 is connected to the reset torsion spring 6A on the fixing member 13 to achieve the effect of resetting the housing 12.

[0069] Embodiment 6:

[0070] As Figure 8 shown, the difference from Embodiment 5 is that: the reset element 6 is a reset spring 6B. When using the reset spring 6B, two reset springs 6B are required. One part is fixed in one rotational direction of the housing 12 and connected to the fixing member 13, and the other part is fixed in the other rotational direction of the housing 12 and connected to the fixing member 13.

[0071] With the foregoing technical solution, when using the reset spring 6B, two reset springs 6B are required. One part is fixed in one rotational direction of the housing 12 and connected to the fixing member 13, and the other part is fixed in the other rotational direction of the housing 12 and connected to the fixing member 13, so that the elastic forces of the two reset springs 6B ensure that the housing 12 returns to the correct position after the rail vehicle passes through a curve.

[0072] Embodiment 7:

[0073] The present utility model further provides a transport vehicle, including at least two vehicle bodies and the vehicle body connection structure in any one of the foregoing embodiments, wherein a vehicle body connection mechanism is connected between every two vehicle bodies. The transport vehicle can be an agricultural rail transport vehicle, a small workshop transport vehicle, etc.

[0074] With the foregoing technical solution, the connection process of the transport vehicle using this vehicle body connection structure can achieve automatic locking, so it is more convenient and efficient. Moreover, the used components are few and the structure is simple, making the connection between the two vehicle bodies more firm, not easily damaged, and having a relatively longer service life compared with traditional couplers.

[0075] It should be noted that the two vehicle bodies can be the same vehicle bodies, such as two carriages of a rail vehicle, or different vehicle bodies, such as a trailer and a towed carriage.

[0076] In addition to the above preferred embodiments, the present utility model has other implementation manners. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection claimed by the present utility model.

Claims

1. A vehicle body connection structure, comprising two couplers (1) respectively connected to two vehicle bodies, characterized in that, Each of the couplers (1) includes a housing (12) and an elastic element (3). The housing (12) is provided with a connection groove (11), a connection block (4), and a snap member (2) movably installed. The snap member (2) has a locked position and an unlocked position. The elastic element (3) urges the snap member (2) to remain in the locked position. During the connection process of two couplers (1), when the connection block (4) of one coupler (1) inserts into the connection groove (11) of the other coupler (1), the connection block (4) urges the snap member (2) on the other coupler (1) to switch from the locked position to the unlocked position to avoid the connection block (4). After the connection block (4) is inserted into the connection groove (11) of the other coupler (1) in place, the elastic elements (3) on the two couplers (1) urge their respective snap members (2) to switch to the locked position to prevent the connection block (4) from disengaging from the connection groove (11) of the other coupler.

2. The vehicle body connection structure according to claim 1, wherein The snap member (2) is rotatably connected to the housing (12).

3. A vehicle body connection structure according to claim 1, characterized in that, A handle (5) is fixedly connected to the snap member (2). Both ends of the elastic element (3) are fixedly connected to the handle (5) and the housing (12); the cross-section of the connection block (4) gradually decreases in the direction away from the housing (12) to which it is fixed, and is overall pyramid-shaped.

4. A vehicle body connection structure according to claim 3, characterized in that, A limiting hole is provided on the housing (12). One end of the handle (5) extends into the housing (12) through the limiting hole and is connected to the snap member (2). The hole wall of the limiting hole restricts the rotation angle of the handle (5).

5. The body connection structure according to claim 2, characterized in that, The snap member (2) is a semi-circular ring, and the rotation axis of the snap member (2) is a semi-cylindrical body fixedly provided on the housing (12).

6. A vehicle body connection structure according to claim 5, characterized in that, During the connection process of two couplers (1), when the snap members (2) in the two couplers are in the locked position, the docking surfaces of the two semi-circular rings and the docking surfaces of the two semi-cylindrical bodies are arranged in a staggered manner.

7. A vehicle body connection structure according to claim 1, characterized in that, An installation groove is provided in the housing (12). The snap member (2) is slidably installed in the installation groove, and the elastic element (3) is provided between the bottom of the installation groove and the snap member (2).

8. A vehicle body connection structure according to claim 1, characterized in that The coupler (1) further includes a fixing member (13) and a reset element (6). The fixing member (13) is fixedly connected to the vehicle body, the housing (12) is rotatably connected to the fixing member (13), and the reset element (6) is used to urge the housing (12) to rotate and reset.

9. The body connection structure according to claim 8, wherein, The reset element (6) is a reset torsion spring (6A). When the reset element (6) uses the reset torsion spring (6A), one end of the reset torsion spring (6A) is fixed on the housing (12), and the other end is fixed on the fixing member (13); or, the reset element (6) is a reset spring (6B), and at least two reset springs (6B) are used. One part of the reset springs (6B) is fixed in one rotation direction of the housing (12) and is connected to the fixing member (13), and the other part of the reset springs (6B) is fixed in the other rotation direction of the housing (12) and is connected to the fixing member (13).

10. A transport vehicle, comprising at least two vehicle bodies and at least one vehicle body connection structure as described in any one of claims 1-9, wherein, One of the vehicle body connection mechanisms is connected between every two vehicle bodies.

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