Traction device and vehicle

Abstract

The utility model relates to the technical field of vehicle components, in particular to a traction device and a vehicle. The traction device comprises a traction pin, a first connecting piece and a locking assembly; the traction pin is suitable for being connected with one of a tractor and a towed object, the first connecting piece is suitable for being connected with the other one of the tractor and the towed object, and the traction pin is suitable for being inserted into the first connecting piece; the traction device has a connection state; in the connecting state, the locking assembly is connected with the first connecting piece and the traction pin so as to lock the traction pin and the first connecting piece. The traction device comprises a traction pin, a first connecting piece and a locking assembly, and the structure of the traction device is simple; in the connecting state, the locking assembly is connected with the first connecting piece and the traction pin so that the traction pin and the first connecting piece can be locked, and the traction device can be firmly connected through the locking assembly. Therefore, the traction device has the advantages of simple structure and firm connection.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle components, and particularly relates to a towing device and a vehicle. Background Art

[0002] A vehicle is a means of transportation for transporting people or goods. When in use, a vehicle usually uses a towing device, which is a device used to connect a towing vehicle (such as a car, a truck, etc.) and an object to be towed (such as a trailer, a semi-trailer, a motorhome, a ship, etc.). The functions of the towing device mainly include transmitting traction force and braking force and adapting to rotation. Currently, the existing towing device has the defect of complex structure. Content of the Utility Model

[0003] In view of this, the utility model aims to provide a towing device and a vehicle to solve or partially solve the problem that the existing towing device has a complex structure.

[0004] In a first aspect, an embodiment of the utility model provides a towing device adapted to be connected between a towing vehicle and an object to be towed; the towing device includes a towing pin, a first connecting member, and a locking assembly; the towing pin is adapted to be connected to one of the towing vehicle and the object to be towed, the first connecting member is adapted to be connected to the other of the towing vehicle and the object to be towed, and the towing pin is adapted to be inserted into the first connecting member; the towing device has a connected state; in the connected state, the locking assembly is respectively connected to the first connecting member and the towing pin to lock the towing pin and the first connecting member.

[0005] Optionally, the first connecting member is provided with a first installation cavity, and the towing pin is adapted to be inserted into the first installation cavity; the locking assembly includes a locking tongue and a locking ring; the locking tongue is penetrated through the first connecting member, one end of the locking tongue is located on the outer periphery of the first connecting member, and the other end of the locking tongue is adapted to be inserted into the first installation cavity to be connected to the towing pin; the locking ring is disposed around the outer periphery of the first connecting member, and in the connected state, the locking ring abuts against one end of the locking tongue to limit the locking tongue in the first installation cavity to keep connected with the towing pin, so as to lock the towing pin and the first connecting member.

[0006] Optionally, an annular groove is provided at an end of the towing pin inserted into the first installation cavity, and the annular groove is disposed around the axis of the towing pin; an end of the locking tongue inserted into the first installation cavity is adapted to be inserted into the annular groove.

[0007] Optionally, there are a plurality of locking tongues, and the plurality of locking tongues are spaced apart around the axis of the towing pin.

[0008] Optionally, the locking assembly further includes a cover plate, which is connected to the outer periphery of the first connecting member; the cover plate is provided with a cover plate through hole, and the first connecting member is provided with a connecting member through hole, and the cover plate through hole and the connecting member through hole are correspondingly arranged; the locking tongue is inserted through the cover plate through hole and the connecting member through hole, one end of the locking tongue is located on the side of the cover plate away from the first connecting member, and the other end of the locking tongue is adapted to move within the connecting member through hole and the first connecting member.

[0009] Optionally, the traction device further includes a driving assembly, which is respectively connected to the first connecting member and the locking ring, and the driving assembly pushes the locking ring to move, so that the locking ring moves to the end face of the locking tongue away from the traction pin to limit the locking tongue.

[0010] Optionally, the first connecting member is provided with a second installation cavity, and the second installation cavity and the first installation cavity are arranged along the axis direction of the traction pin; the driving assembly includes a driving member and an actuating member, the driving member and the actuating member are respectively arranged in the second installation cavity, the driving member is connected to the first connecting member, the actuating member is connected to the locking ring, and the driving member drives the actuating member to move to drive the locking ring to move.

[0011] Optionally, the driving member is a solenoid and the actuating member is an iron core.

[0012] Optionally, the first connecting member is provided with a strip-shaped through hole, and the strip-shaped through hole is arranged along the axis direction of the traction pin; the traction device further includes a third connecting member, the third connecting member is inserted through the strip-shaped through hole, one end of the third connecting member is connected to the locking ring, and the other end of the third connecting member is connected to the actuating member.

[0013] Optionally, the traction device further includes a second connecting member; the second connecting member is connected between the traction pin and the object to be towed, and the second connecting member is respectively rotatably connected to the traction pin and the object to be towed.

[0014] Optionally, the traction device has a first rotation axis and a second rotation axis; the second connecting member and the traction pin rotate relative to each other around the first rotation axis, and the second connecting member and the object to be towed rotate relative to each other around the second rotation axis; one of the first rotation axis and the second rotation axis is parallel to the horizontal direction, and the other of the first rotation axis and the second rotation axis is parallel to the vertical direction.

[0015] Optionally, the towing device further includes a first elastic member and a second elastic member; the first elastic member is connected between the second connecting member and the towing pin, and the second elastic member is connected between the second connecting member and the towed object. The first elastic member and the second elastic member keep the towing pin in an initial position, and the towing pin in the initial position is adapted to be inserted into the first connecting member.

[0016] Optionally, there are two first elastic members, and the two first elastic members are respectively located on the upper and lower sides of the towing pin, and the two first elastic members keep the axis of the towing pin parallel to the horizontal direction; and / or, the second connecting member is arranged in the vertical direction, and there are two second elastic members, and the two second elastic members are respectively located on both sides of the towing pin in the horizontal direction, and the two second elastic members keep the second connecting member at a preset angle so that the towing pin extends away from the towed object.

[0017] In a second aspect, an embodiment of the present invention further provides a vehicle, which includes a towing vehicle, a towed object and the above-mentioned towing device. The first connecting member of the towing device is connected to one of the towing vehicle and the towed object, and the towing pin of the towing device is connected to the other of the towing vehicle and the towed object.

[0018] Optionally, the towed object is a trailer.

[0019] A towing device disclosed by the present invention includes a towing pin, a first connecting member and a locking assembly. The structure of the towing device is relatively simple; in the connected state, the locking assembly is respectively connected to the first connecting member and the towing pin to lock the towing pin and the first connecting member, and the locking assembly also makes the connection of the towing device firm. Therefore, the towing device has the advantages of simple structure and firm connection.

[0020] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other objects, features and advantages of the present invention more obvious and understandable, the following specifically describes the specific embodiments of the present invention. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1Schematic three-dimensional structure diagram of the vehicle according to the present utility model;

[0023] Figure 2 Schematic structure diagram of the separation state of the traction device according to the present utility model;

[0024] Figure 3 Schematic structure diagram of the connected state of the traction device according to the present utility model;

[0025] Figure 4 Schematic structure diagram of the sectional view of the connected state of the traction device according to the present utility model;

[0026] Figure 5 is Figure 4 Schematic structure diagram of the A-A sectional view in

[0027] Figure 6 Schematic structure diagram of the second fixed cylinder according to the present utility model;

[0028] Figure 7 Schematic structure diagram of the locking tongue according to the present utility model;

[0029] Figure 8 Schematic structure diagram of the cover plate according to the present utility model.

[0030] Reference numerals:

[0031] 10 - Traction pin; 11 - Annular groove;

[0032] 20 - First connecting member; 21 - First installation cavity; 22 - Connecting member through hole; 23 - Second installation cavity; 24 - Strip-shaped through hole; 25 - First fixed cylinder; 26 - Second fixed cylinder; 261 - Cylinder side wall groove; 27 - First installation hole; 28 - Second installation hole;

[0033] 30 - Locking assembly; 31 - Locking tongue; 311 - Contact surface; 312 - Guide slope; 32 - Locking ring; 33 - Cover plate; 331 - Cover plate through hole; 332 - Cover plate groove; 333 - Cover plate installation hole; 34 - Locking tongue hanging pin;

[0034] 40 - Driving assembly; 41 - Driving member; 42 - Actuating member;

[0035] 50 - Second connecting member;

[0036] 61 - First elastic member; 62 - Second elastic member;

[0037] 71 - Third connecting member; 72 - First spring hanger; 73 - Second spring hanger;

[0038] 81 - Tractor; 82 - Trailer; 83 - Traction arm; 84 - Traction device. Detailed Implementation Modes

[0039] Exemplary embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be understood more thoroughly and the scope of the present utility model can be fully conveyed to those skilled in the art.

[0040] In this application, the term "parallel" not only includes the case of absolute parallelism, but also includes the generally parallel situation conventionally recognized in engineering. For example, "parallel" means that the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is in the state of -1° to 1°. At the same time, "perpendicular" not only includes the case of absolute perpendicularity, but also includes the generally perpendicular situation conventionally recognized in engineering. For example, "perpendicular" means that the angle formed by a straight line and a straight line, a straight line and a plane, or a plane and a plane is in the state of 89° to 91°. Equal distance or equal angle not only includes the case of absolute equality, but also includes the generally equal situation conventionally recognized in engineering, that is, there may be a certain error, such as the tolerance range is in the state of -1% to 1%.

[0041] An embodiment of this application discloses a traction device, which is adapted to be connected between a towing vehicle 81 and an object to be towed to connect the towing vehicle 81 and the object to be towed.

[0042] Refer to Figures 1 to 8 As shown, the traction device includes a draw pin 10, a first connecting member 20, and a locking assembly 30; the draw pin 10 is adapted to be connected to one of the towing vehicle 81 and the object to be towed, the first connecting member 20 is adapted to be connected to the other of the towing vehicle 81 and the object to be towed, and the draw pin 10 is adapted to be inserted into the first connecting member 20; the traction device has a connected state; in the connected state, the locking assembly 30 is respectively connected to the first connecting member 20 and the draw pin 10 to lock the draw pin 10 and the first connecting member 20.

[0043] The traction device has a connected state and a separated state. In the connected state, the locking assembly 30 is respectively connected to the first connecting member 20 and the draw pin 10 to lock the draw pin 10 and the first connecting member 20. In the separated state, the first connecting member 20 and the draw pin 10 are separated from each other, and then the towing vehicle 81 and the object to be towed are separated from each other.

[0044] The traction device according to the embodiment of the present application includes a traction pin 10, a first connecting member 20, and a locking assembly 30. The structure of the traction device is relatively simple. In the connected state, the locking assembly 30 is respectively connected to the first connecting member 20 and the traction pin 10 to lock the traction pin 10 and the first connecting member 20, and the locking assembly 30 also makes the connection of the traction device firm. Therefore, the traction device has the advantages of simple structure and firm connection.

[0045] In some embodiments, the first connecting member 20 is provided with a first installation cavity 21, and the traction pin 10 is adapted to be inserted into the first installation cavity 21. The locking assembly 30 includes a locking tongue 31 and a locking ring 32. The locking tongue 31 is inserted through the first connecting member 20. One end of the locking tongue 31 is located on the outer periphery of the first connecting member 20, and the other end of the locking tongue 31 is adapted to be inserted into the first installation cavity 21 to be connected to the traction pin 10. The locking ring 32 is disposed around the outer periphery of the first connecting member 20. In the connected state, the locking ring 32 abuts against one end of the locking tongue 31 to limit the locking tongue 31 in the first installation cavity 21 and keep it connected to the traction pin 10.

[0046] In the embodiment of the present application, in the connected state, the locking ring 32 abuts against one end of the locking tongue 31 to limit the locking tongue 31 in the first installation cavity 21 and keep it connected to the traction pin 10. The traction pin 10 will not come out of the first installation cavity 21. The locking ring 32 and the locking tongue 31 can lock the traction pin 10 and the first connecting member 20, thereby realizing the connection function of the traction device.

[0047] In some embodiments, the first connecting member 20 includes a first fixing cylinder 25 and a second fixing cylinder 26. The first fixing cylinder 25 and the second fixing cylinder 26 are arranged along the axis direction of the traction pin 10. One end of the first fixing cylinder 25 is connected to the tractor 81 through a second installation hole 28, and the other end of the first fixing cylinder 25 is connected to one end of the second fixing cylinder 26 through fasteners such as bolts. The first installation cavity 21 is provided at the end of the second fixing cylinder 26 facing away from the first fixing cylinder 25. The first connecting member 20 including the first fixing cylinder 25 and the second fixing cylinder 26 has the advantage of convenient assembly.

[0048] In some embodiments, an annular groove 11 is provided at the end of the traction pin 10 inserted into the first installation cavity 21. The annular groove 11 is arranged around the axis of the traction pin 10. The end of the locking tongue 31 inserted into the first installation cavity 21 is adapted to be inserted into the annular groove 11.

[0049] When the traction device is in the connected state, the end of the locking tongue 31 inserted into the first installation cavity 21 is inserted into the annular groove 11, then the traction pin 10 will not come out of the first installation cavity 21 under the action of the pulling force of the object to be towed, thereby realizing the connection function of the traction device.

[0050] In some embodiments, there are multiple locking tongues 31, and the multiple locking tongues 31 are arranged at intervals around the axis of the traction pin 10. The arrangement of multiple locking tongues 31 can increase the stability and reliability of the connection between the locking tongue 31 and the traction pin 10, thereby improving the connection function of the traction device.

[0051] In some embodiments, the locking assembly 30 also includes a cover plate 33, which is connected to the outer periphery of the first connecting member 20; the cover plate 33 is provided with a cover plate through hole 331, and the first connecting member 20 is provided with a connecting member through hole 22, and the cover plate through hole 331 and the connecting member through hole 22 are correspondingly arranged; the lock tongue 31 is passed through the cover plate through hole 331 and the connecting member through hole 22, one end of the lock tongue 31 is located on the side of the cover plate 33 away from the first connecting member 20, and the other end of the lock tongue 31 is suitable for moving in the connecting member through hole 22 and the first connecting member 20.

[0052] In the embodiment of the present application, the cover plate 33 can be used to assemble the lock tongue 31, so that one end of the lock tongue 31 is located on the side of the cover plate 33 facing away from the first connecting member 20, and the other end of the lock tongue 31 is located on the other side of the cover plate 33 facing the first connecting member 20. The cover plate 33 can prevent the lock tongue 31 from falling from the first connecting member 20 and completely entering the first installation cavity 21.

[0053] In the traction device, during the insertion of the traction pin 10 into the first installation cavity 21, the traction pin 10 pushes the lock tongue 31 to move out of the first installation cavity 21 along the diameter direction of the traction pin 10, and the lock tongue 31 can be partially or completely moved into the connecting member through hole 22 to avoid the traction pin 10. The traction pin 10 continues to be inserted into the first installation cavity 21, and when the annular groove 11 corresponds to the lock tongue 31, the lock tongue 31 is inserted into the annular groove 11 under the action of gravity. The other end of the lock tongue 31 is suitable for moving in the connecting member through hole 22 and the first connecting member 20, which can save the width of the traction device along the diameter direction of the traction pin 10, making the structure of the traction device compact.

[0054] In some embodiments, the traction device also includes a drive assembly 40, which is respectively connected to the first connecting member 20 and the locking ring 32. The drive assembly 40 pushes the locking ring 32 to move so that the locking ring 32 moves to the end face where the locking tongue 31 is away from the traction pin 10 and the upper limit locking tongue 31 is moved.

[0055] The traction device of the embodiment of the present application uses a driving assembly 40 to push the locking ring 32 to move, so that the locking ring 32 moves to the end surface where the locking tongue 31 is away from the traction pin 10 and the upper limit locking tongue 31 is moved. The traction device can automatically realize the hooking and locking of the first connecting member 20 and the traction pin 10, reducing the involvement of personnel.

[0056] The driving assembly 40 pushes the locking ring 32 to move, so that the locking ring 32 moves away from the end surface of the locking tongue 31 away from the traction pin 10. After the locking ring 32 is separated from the locking tongue 31, the locking ring 32 releases the limit of the locking tongue 31 along the diameter direction of the traction pin 10. The traction device can also automatically unlock the first connecting member 20 and the traction pin 10. Therefore, the traction device has the advantage of being simple and convenient to operate.

[0057] In some embodiments, the first connecting member 20 is provided with a second installation cavity 23, and the second installation cavity 23 and the first installation cavity 21 are arranged along the axial direction of the traction pin 10; the driving assembly 40 includes a driving member 41 and an actuator 42, and the driving member 41 and the actuator 42 are respectively arranged in the second installation cavity 23, the driving member 41 is connected to the first connecting member 20, and the actuator 42 is connected to the locking ring 32, and the driving member 41 drives the actuator 42 to move to drive the locking ring 32 to move.

[0058] In the traction device of the embodiment of the present application, the second installation cavity 23 and the first installation cavity 21 are arranged along the axial direction of the traction pin 10, and may be connected or not connected. Figure 4 As shown, it is a schematic structural diagram that the second installation cavity 23 is connected to the first installation cavity 21.

[0059] The driving member 41 drives the actuator 42 to move to drive the locking ring 32 to move. When the locking ring 32 moves to the end face of the locking tongue 31 away from the traction pin 10, it will limit the locking tongue 31, so that the locking tongue 31 remains connected to the traction pin 10, and the traction pin 10 will not fall out of the first installation cavity 21. The locking ring 32 and the locking tongue 31 can lock the traction pin 10 and the first connecting member 20, thereby realizing the connection function of the traction device.

[0060] In some embodiments, the driving member 41 is a solenoid and the actuator 42 is an iron core. The solenoid is a tubular structure surrounded by a coil. When current passes through the coil, the coil generates a magnetic field, which attracts the iron core to move inside the coil, thereby generating a mechanical action, so that the iron core drives the locking ring 32 to move.

[0061] Further, see Figure 2 As shown, one end of the driving member 41 along the axial direction of the traction pin 10 is fixedly connected to the traction vehicle 81 through the first mounting hole 27 .

[0062] The positional relationship between the solenoid and the core can be set according to the usage requirements. For example, refer to Figure 4 As shown, a avoidance chamber is provided in the solenoid for the reciprocating movement of the iron core.

[0063] In some embodiments, the first connecting member 20 is provided with a strip-shaped through hole 24, and the strip-shaped through hole 24 is arranged along the axial direction of the towing pin 10; the towing device further includes a third connecting member 71, the third connecting member 71 is inserted into the strip-shaped through hole 24, one end of the third connecting member 71 is connected to the locking ring 32, and the other end of the third connecting member 71 is connected to the actuating member 42.

[0064] In the embodiments of the present application, the third connecting member 71 is connected between the locking ring 32 and the actuating member 42 and is inserted into the strip-shaped through hole 24. The third connecting member 71 can realize the connection between the locking ring 32 and the actuating member 42, so that the movement of the actuating member 42 can drive the locking ring 32 to move.

[0065] In some embodiments, referring to Figure 2 , Figure 4 and Figure 7 , a cross-section is made through the axis of the towing pin 10. The end of the locking tongue 31 located in the connecting member through hole 22 and the first installation cavity 21 is trapezoidal. The upper base of the trapezoid is located on the end face of the locking tongue 31 facing away from the locking ring 32. The two waists of the trapezoid are respectively arranged on both sides of the locking tongue 31 along the axial direction of the towing pin 10, and the waist of the trapezoid is located on the guiding slope 312. The two groove walls of the annular groove 11 along the axial direction of the towing pin 10 are inclined from the groove bottom of the annular groove 11 to both sides of the annular groove 11 along the axial direction of the towing pin 10. The guiding slope 312 and the two groove walls of the annular groove 11 along the axial direction of the towing pin 10 are used for guiding, so that the locking tongue 31 can be smoothly inserted into the annular groove 11 and removed from the annular groove 11.

[0066] Furthermore, the end of the locking tongue 31 located in the connecting member through hole 22 and the first installation cavity 21 cannot pass through the cover plate through hole 331. A locking tongue hanging pin 34 is arranged on the end of the locking tongue 31 facing away from the first installation cavity 21. The locking tongue hanging pin 34 prevents the locking tongue 31 from passing through the cover plate through hole 331, and the locking tongue 31 can be stably connected to the cover plate 33. Referring to Figure 8 shown, the cover plate 33 is provided with a cover plate groove 332 for the locking tongue hanging pin 34 to be placed in. The cover plate 33 is fixedly connected to the second fixed cylinder 26, for example, by welding, for example, by using fasteners such as bolts to pass through the cover plate installation holes 333 for connection, etc.

[0067] In some embodiments, in order to reduce the requirement for the driving force of the driving assembly 40, there is an included angle between the end face of the locking tongue 31 facing away from the towing pin 10 and the axial direction of the towing pin 10, that is, there is an included angle between the abutting surface 311 of the locking tongue 31 and the axial direction of the towing pin 10, and the abutting surface 311 is inclined in a direction away from the locking ring 32 and the axis of the towing pin 10. Similarly, the inner wall of the locking ring 32 connected to the locking tongue 31 is also an inclined surface, and this inclined surface cooperates with the abutting surface 311.

[0068] In some embodiments, the included angle between the abutting surface 311 of the locking tongue 31 and the axial direction of the traction pin 10 is 1° - 5°, which is specifically set according to the usage requirements. For example, the included angle between the abutting surface 311 of the locking tongue 31 and the axial direction of the traction pin 10 is 1°, 1.5°, 2°, 2.5°, 3°, 3.5°, 4°, 4.5°, 5°, and the values between the above point values.

[0069] In some embodiments, a cylindrical side wall groove 261 is provided on the outer periphery of the connecting member through hole 22 of the second fixing cylinder 26. The cover plate 33 is arranged in the cylindrical side wall groove 261. The surface of the cover plate 33 facing away from the second fixing cylinder 26 is an arc surface. The surface of the cover plate 33 facing away from the second fixing cylinder 26 and the outer peripheral surface of the second fixing cylinder 26 enclose a cylindrical side wall. Correspondingly, the locking ring 32 encloses a cylindrical through cavity adapted to the above cylindrical side wall.

[0070] In some embodiments, the traction device further includes a second connecting member 50; the second connecting member 50 is connected between the traction pin 10 and the object to be towed. The second connecting member 50 is rotatably connected to the traction pin 10 and the object to be towed respectively, so that the traction device can adapt to various road conditions such as turning, going uphill and downhill, and tilting during the driving of the tractor 81 driving the trailer 82.

[0071] In some embodiments, the traction device has a first rotation axis and a second rotation axis; the second connecting member 50 and the traction pin 10 rotate relative to each other around the first rotation axis, and the second connecting member 50 and the object to be towed rotate relative to each other around the second rotation axis; one of the first rotation axis and the second rotation axis is parallel to the horizontal direction, and the other of the first rotation axis and the second rotation axis is parallel to the vertical direction.

[0072] In the embodiments of the present application, the traction device can achieve a large-angle rotation through the traction pin 10 and the second connecting member 50, so as to better adapt to various road conditions such as turning, going uphill and downhill, and tilting during the driving of the tractor 81 driving the trailer 82.

[0073] In some embodiments, the traction device further includes a first elastic member 61 and a second elastic member 62; the first elastic member 61 is connected between the second connecting member 50 and the traction pin 10, and the second elastic member 62 is connected between the second connecting member 50 and the object to be towed. The first elastic member 61 and the second elastic member 62 keep the traction pin 10 in an initial position, and the traction pin 10 in the initial position is adapted to be inserted into the first connecting member 20.

[0074] Wherein, the initial position is the position where the traction pin 10 is in a free state, and the traction pin 10 in the initial position is adapted to be inserted into the first connecting member 20. That is, when the tractor 81 is aligned with the object to be towed and ready to insert the traction pin 10 into the first installation cavity 21, the axis of the traction pin 10 coincides with the axis of the first connecting member 20.

[0075] In some embodiments, there are two first elastic members 61, and the two first elastic members 61 are respectively located on the upper and lower sides of the towing pin 10. The two first elastic members 61 make the axis of the towing pin 10 parallel to the horizontal direction. With the arrangement of the two first elastic members 61, when the towing device is in the separated state, the two first elastic members 61 make the axis of the towing pin 10 parallel to the horizontal direction, so as to achieve correspondence with the first installation cavity 21.

[0076] To facilitate the connection between the first elastic member 61 and the second elastic member 62, an appropriate component can also be used for auxiliary connection. For example, referring to Figure 3 as shown, one end of the first elastic member 61 located on the upper side of the towing pin 10 is connected to the towing pin 10 through a raised column, and the other end of the first elastic member 61 is connected to the second connecting member 50 through a first spring hanger 72. One end of the first elastic member 61 located on the lower side of the towing pin 10 is connected to the towing pin 10 through another raised column, and the other end of the first elastic member 61 is connected to the second connecting member 50 through a second spring hanger 73 and a towing arm 83; moreover, the first elastic member 61 located on the lower side of the towing pin 10 is connected to the second connecting member 50 through the towing arm 83, and the first elastic member 61 can also pull the towing pin 10 to make the second connecting member 50 at a preset angle, so that the towing pin 10 extends in a direction away from the towed object.

[0077] In some embodiments, the second connecting member 50 is arranged in the vertical direction. There are two second elastic members 62, and the two second elastic members 62 are respectively located on both sides of the towing pin 10 in the horizontal direction. The two second elastic members 62 make the second connecting member 50 at a preset angle, so that the towing pin 10 extends in a direction away from the towed object. With the arrangement of the two second elastic members 62, when the towing device is in the separated state, the two second elastic members 62 make the second connecting member 50 at a preset angle, so that the towing pin 10 extends in a direction away from the towed object, so as to achieve correspondence with the first installation cavity 21.

[0078] The towing device according to the embodiment of the present application includes two separable parts. The first part includes a first connecting member 20, a locking assembly 30 and a driving assembly 40. The second part includes a towing pin 10, a second connecting member 50, a first elastic member 61 and a second elastic member 62. The first part is connected to the towing vehicle 81, and the second part is connected to the towing arm 83 on the trailer 82.

[0079] Referring to Figure 2As shown, when the first part and the second part are separated, the two second elastic members 62 cause the second connecting member 50 to be at a preset angle, so that the towing pin 10 extends in a direction away from the towed object. The two first elastic members 61 stretch the towing pin 10 in the up-and-down direction of the towing pin 10, so that the axis of the towing pin 10 is parallel to the horizontal direction. At this time, the towing pin 10 is in the initial position.

[0080] After the tractor 81 completes the alignment and positioning with the trailer 82, the tractor 81 drives the first part to advance along the axis direction of the towing pin 10 towards the towing pin 10. The towing pin 10 will be inserted into the first installation cavity 21 of the second fixed cylinder 26, and the locking tongue 31 will be snapped into the annular groove 11 of the towing pin 10. The driving member 41 drives the actuating member 42 to move towards the towing pin 10. The actuating member 42 will drive the locking ring 32 to move towards the locking tongue 31 and move to the end face of the locking tongue 31 away from the towing pin 10, realizing the limit of the locking tongue 31 in the diameter direction of the towing pin 10, so that the locking tongue 31 is kept in the annular groove 11, thus completing the hitching action.

[0081] In the towing device, the second connecting member 50 is respectively rotatably connected to the towing pin 10 and the towed object, and the locking tongue 31 also has a swinging space in the annular groove 11. Therefore, it can adapt to various road conditions such as turning, going uphill and downhill, and tilting during the driving of the tractor 81 driving the trailer 82.

[0082] When the tractor 81 drives the trailer 82 to a predetermined position and is ready to lower the trailer 82, the driving member 41 is started first. The driving member 41 drives the actuating member 42 to retract. The actuating member 42 simultaneously drives the locking ring 32 to move away from the end face of the locking tongue 31 away from the towing pin 10. After the locking ring 32 is separated from the locking tongue 31, the locking ring 32 releases the limit of the locking tongue 31 in the diameter direction of the towing pin 10. Thereafter, the tractor 81 travels, and under the action of inertia force of the trailer 82, the locking tongue 31 is pushed outwards by the towing pin 10 in the diameter direction of the towing pin 10, thereby realizing the separation of the first part and the second part.

[0083] The towing device of the embodiment of the present application includes a towing pin 10, a first connecting member 20 and a locking assembly 30. The structure of the towing device is relatively simple; in the connected state, the locking assembly 30 is respectively connected to the first connecting member 20 and the towing pin 10 to lock the towing pin 10 and the first connecting member 20, and the locking assembly 30 also makes the connection of the towing device firm. Therefore, the towing device has the advantages of simple structure and firm connection. The towing device can realize automatic hitching and automatic disconnection.

[0084] Furthermore, only one driving component 40 is used in the towing device to achieve automatic connection and automatic disconnection, making the towing device more concise. The components in the towing device are all relatively mature components, which can increase the reliability of the towing device. By changing the size specifications and other parameters of the various components in the towing device, the towing device can be adapted to trailers 82 of various weights, with a wider range of applications.

[0085] An embodiment of the present application further provides a vehicle, which includes a towing vehicle 81, an object to be towed, and the towing device 84 as described above. The first connecting member 20 of the towing device 84 is connected to one of the towing vehicle 81 and the object to be towed, and the towing pin 10 of the towing device 84 is connected to the other of the towing vehicle 81 and the object to be towed.

[0086] When the towing vehicle 81 and the object to be towed of the vehicle are connected by the towing device, it has the advantages of simple structure and firm connection. Moreover, automatic connection and automatic disconnection can be achieved through the towing device, reducing the participation of personnel and making the operation simpler.

[0087] In some embodiments, referring to Figure 1 as shown, the object to be towed is a trailer 82.

[0088] Furthermore, the object to be towed can also be a semi-trailer, a recreational vehicle, a boat, a piece of equipment, etc.

[0089] In the embodiments of the present application, the towing device and the vehicle can be referred to each other, and have the same or similar beneficial effects as any of the foregoing towing devices. To avoid repetition, they will not be elaborated here.

[0090] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0091] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. For the embodiments of the device, electronic device, computer-readable storage medium, and computer program product containing instructions, since they are basically similar to the method embodiments, the description is relatively simple. For the relevant parts, reference can be made to the partial description of the method embodiments.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A traction device, adapted to be connected between a towing vehicle (81) and an object to be towed; characterized in that, The traction device comprises a traction pin (10), a first connecting member (20) and a locking assembly (30); The traction pin (10) is suitable for connecting with one of the traction vehicle (81) and the towed object, the first connecting member (20) is suitable for connecting with the other of the traction vehicle (81) and the towed object, and the traction pin (10) is suitable for being inserted into the first connecting member (20); The traction device has a connected state; in the connected state, the locking assembly (30) is respectively connected to the first connecting member (20) and the traction pin (10) to lock the traction pin (10) and the first connecting member (20).

2. The traction device according to claim 1, characterized in that, The first connecting member (20) is provided with a first installation cavity (21), and the traction pin (10) is suitable for being inserted into the first installation cavity (21); the locking assembly (30) comprises a locking tongue (31) and a locking ring (32); the locking tongue (31) is passed through the first connecting member (20), one end of the locking tongue (31) is located at the outer periphery of the first connecting member (20), and the other end of the locking tongue (31) is suitable for being inserted into the first installation cavity (21) and connected with the traction pin (10); The locking ring (32) is arranged around the outer circumference of the first connecting member (20). In the connected state, the locking ring (32) abuts against one end of the locking tongue (31), and the locking tongue (31) is limited in the first installation cavity (21) to maintain connection with the traction pin (10), so as to lock the traction pin (10) and the first connecting member (20).

3. The traction device according to claim 2, characterized in that, An annular groove (11) is provided at the end of the traction pin (10) inserted into the first mounting cavity (21), and the annular groove (11) is arranged around the axis of the traction pin (10); The end of the locking tongue (31) inserted into the first installation cavity (21) is suitable for being inserted into the annular groove (11).

4. The traction device according to claim 3, characterized in that, The locking tongues (31) are multiple, and the multiple locking tongues (31) are arranged at intervals around the axis of the traction pin (10).

5. The traction device according to claim 2, characterized in that, The locking assembly (30) further comprises a cover plate (33), wherein the cover plate (33) is connected to the outer periphery of the first connecting member (20); the cover plate (33) is provided with a cover plate through hole (331), the first connecting member (20) is provided with a connecting member through hole (22), and the cover plate through hole (331) and the connecting member through hole (22) are arranged correspondingly; The locking tongue (31) is inserted through the cover plate through hole (331) and the connecting member through hole (22); one end of the locking tongue (31) is located on a side of the cover plate (33) away from the first connecting member (20); and the other end of the locking tongue (31) is suitable for moving in the connecting member through hole (22) and the first connecting member (20).

6. The traction device according to claim 2, wherein, The traction device further includes a driving assembly (40). The driving assembly (40) is respectively connected to the first connecting member (20) and the locking ring (32). The driving assembly (40) pushes the locking ring (32) to move, so that the locking ring (32) moves to the end face of the locking tongue (31) away from the traction pin (10) to limit the locking tongue (31).

7. The traction device according to claim 6, characterized in that, The first connecting member (20) is provided with a second installation cavity (23). The second installation cavity (23) and the first installation cavity (21) are arranged along the axial direction of the traction pin (10). The driving assembly (40) includes a driving member (41) and an actuating member (42). The driving member (41) and the actuating member (42) are respectively arranged in the second installation cavity (23). The driving member (41) is connected to the first connecting member (20), and the actuating member (42) is connected to the locking ring (32). The driving member (41) drives the actuating member (42) to move to drive the locking ring (32) to move.

8. The traction device according to claim 7, characterized in that, The driving member (41) is a solenoid, and the actuating member (42) is an iron core.

9. The traction device according to claim 7, characterized in that, The first connecting member (20) is provided with a strip-shaped through hole (24). The strip-shaped through hole (24) is arranged along the axial direction of the traction pin (10). The traction device further includes a third connecting member (71). The third connecting member (71) is inserted into the strip-shaped through hole (24). One end of the third connecting member (71) is connected to the locking ring (32), and the other end of the third connecting member (71) is connected to the actuating member (42).

10. The traction device according to claim 1, characterized in that, The traction device further includes a second connecting member (50). The second connecting member (50) is connected between the traction pin (10) and the object to be towed. The second connecting member (50) is respectively rotatably connected to the traction pin (10) and the object to be towed.

11. The traction device according to claim 10, wherein, The traction device has a first rotation axis and a second rotation axis. The second connecting member (50) and the traction pin (10) rotate relative to each other around the first rotation axis, and the second connecting member (50) and the object to be towed rotate relative to each other around the second rotation axis. One of the first rotation axis and the second rotation axis is parallel to the horizontal direction, and the other of the first rotation axis and the second rotation axis is parallel to the vertical direction.

12. The traction device according to claim 10, characterized in that, The traction device further includes a first elastic member (61) and a second elastic member (62). The first elastic member (61) is connected between the second connecting member (50) and the traction pin (10), and the second elastic member (62) is connected between the second connecting member (50) and the object to be towed. The first elastic member (61) and the second elastic member (62) make the traction pin (10) in an initial position. The traction pin (10) in the initial position is adapted to be inserted into the first connecting member (20).

13. The traction device according to claim 12, characterized in that, There are two of the first elastic members (61), and the two first elastic members (61) are respectively located on the upper and lower sides of the draw pin (10), and the two first elastic members (61) make the axis of the draw pin (10) parallel to the horizontal direction; and / or, The second connecting member (50) is arranged in the vertical direction. There are two of the second elastic members (62), and the two second elastic members (62) are respectively located on both sides of the draw pin (10) in the horizontal direction. The two second elastic members (62) make the second connecting member (50) at a preset angle so that the draw pin (10) extends in a direction away from the towed object.

14. A vehicle, characterized in that, It includes a towing vehicle (81), a towed object, and a towing device as described in any one of claims 1 to 13. The first connecting member (20) of the towing device is connected to one of the towing vehicle (81) and the towed object, and the draw pin (10) of the towing device is connected to the other of the towing vehicle (81) and the towed object.

15. The vehicle according to claim 14, wherein The towed object is a trailer (82).

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