Semitrailer traction device

Abstract

The utility model provides a semitrailer traction device, and relates to the technical field of traction devices, the semitrailer traction device comprises a headstock connecting seat and a tailstock connecting seat, and a connecting assembly is arranged between the headstock connecting seat and the tailstock connecting seat; the connecting assembly comprises an insertion opening and a lantern ring, the insertion opening is located in the middle of the inner side of the headstock connecting base, and threaded holes are formed in the middles of the upper end and the lower end of the insertion opening and are in threaded connection with a spindle. The limiting assembly is arranged between the semitrailer head connecting base and the semitrailer tail connecting base, when the semitrailer is driven by the power semitrailer head to steer, the limiting column slides in the limiting groove, the effect of limiting the semitrailer tail connecting base is achieved, steering torsion borne by the semitrailer tail connecting base can be relieved, and steering stability of the semitrailer is improved. And in addition, a damping spring is arranged in the middle of the bottom end of a limiting column, abrasion generated when the limiting column slides in a limiting groove can be reduced, and the service life of the traction device is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of traction devices, in particular to a traction device for a semitrailer. Background Art

[0002] A semitrailer is a trailer whose axle is placed behind the center of gravity of the vehicle and is equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. The trailer traction device is a traction part used by a cargo tractor to pull the semitrailer. The semitrailer traction device can be used to connect the power unit and the semitrailer unit, thereby realizing the traction of the semitrailer unit by the power unit.

[0003] The semi-trailer traction device is generally connected together by a traction ring and a traction shaft to achieve traction of the power unit and the semi-trailer. However, when the power unit turns, the traction ring and the traction shaft will not only be subjected to lateral tension, but also to a certain degree of torque, which will cause easy wear and even deformation of the connection parts, affecting the stability of the traction device during use.

[0004] In order to solve the above problems, we propose a semi-trailer traction device to solve the above problems. Utility Model Content

[0005] In order to solve the problems in the background technology, the utility model provides a semitrailer traction device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A semi-trailer traction device comprises a front connecting seat and a rear connecting seat, characterized in that a connecting assembly is arranged between the front connecting seat and the rear connecting seat; the connecting assembly comprises a socket and a collar, the socket is located at the inner middle part of the front connecting seat, the middle parts of the upper and lower ends of the socket are provided with threaded holes, the threaded holes are threadedly connected with a main shaft, and the collar is located at the head end of the rear connecting seat; wherein, when the collar is inserted into the socket and is in a vertical line with the center points of the two groups of threaded holes, the main shaft passes through the collar to limit the connection between the front connecting seat and the rear connecting seat, thereby improving the stability of the connection between the front connecting seat and the rear connecting seat, wherein the front connecting seat is fixedly installed at the rear of the power locomotive, and the rear connecting seat is fixedly installed at the traction position of the semi-trailer to be towed, and the power locomotive is driven to provide driving force, so that the front connecting seat pulls the rear connecting seat to achieve traction of the semi-trailer.

[0008] A limiting assembly is also arranged between the front connecting seat and the rear connecting seat; the limiting assembly comprises a limiting groove and a limiting column, the limiting groove is semicircular and is located in the middle of the outer side of the threaded hole, the limiting column is located in the middle of both ends of the rear connecting seat, the limiting column is movably installed in the middle of the inner side of the limiting groove, and the limiting column slides in the limiting groove to limit the rear connecting seat, which can alleviate the steering torque on the rear connecting seat and improve the stability when the front connecting seat and the rear connecting seat are connected. A shock-absorbing spring is arranged in the middle of the bottom end of the limiting column, and the shock-absorbing spring can reduce the wear caused by the limiting column sliding in the limiting groove, thereby effectively improving the service life of the traction device.

[0009] Preferably, slots are provided in the middle of both ends of the socket, and the ends of the slots are connected to the middle of the limiting groove, so as to facilitate the insertion of the ring into the socket.

[0010] Preferably, a sleeve is provided in the middle of the bottom end of the limiting column, the sleeve is fixedly mounted in the middle of both ends of the rear connecting seat, the limiting column is movably mounted in the inner middle of the sleeve, the bottom end of the shock-absorbing spring is fixedly mounted in the inner middle of the sleeve, and the limiting column is slid vertically in the inner middle of the sleeve through the shock-absorbing spring.

[0011] Preferably, fixing seats are provided at the bottom of both ends of the vehicle head connecting seat, and a plurality of fixing holes are provided at the inner middle part of the fixing seats.

[0012] Preferably, reinforcing ribs are provided at the middle of both ends of the rear vehicle connecting seat to improve the hardness of the rear vehicle connecting seat and enhance the stability of the rear vehicle connecting seat during installation, and a mounting plate is provided at the end of the rear vehicle connecting seat.

[0013] Preferably, a turntable is provided at the middle of the top end of the main shaft, and the main shaft can be driven to rotate by rotating the turntable, so that the main shaft is threadedly connected with the two groups of threaded holes, thereby achieving the limitation of the collar.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In this solution, by rotating the turntable, the end of the main shaft passes through the collar, thereby limiting the connection between the front connecting seat and the rear connecting seat, thereby improving the stability of the connection between the front connecting seat and the rear connecting seat, so that the power locomotive can tow the semi-trailer;

[0016] In addition, by arranging a limiting assembly between the front connecting seat and the rear connecting seat, when the power front drives the semi-trailer to turn, the limiting column slides in the limiting groove to limit the rear connecting seat, which can alleviate the steering torque on the rear connecting seat, thereby improving the stability when the front connecting seat and the rear connecting seat are connected, and by arranging a shock-absorbing spring in the middle of the bottom end of the limiting column, the wear of the limiting column when sliding in the limiting groove can be reduced, effectively improving the service life of the traction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a top plan view of the vehicle head connecting seat in the utility model;

[0019] Figure 3 It is an exploded view of the limit column and the shock absorbing spring in the utility model.

[0020] In the figure: 1. front connecting seat; 11. socket; 12. threaded hole; 13. limit groove; 14. slot; 2. rear connecting seat; 21. collar; 22. limit column; 23. shock-absorbing spring; 24. seat; 25. reinforcing rib; 26. mounting plate; 3. fixing seat; 31. fixing hole; 4. spindle; 41. turntable. DETAILED DESCRIPTION

[0021] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0022] Example: Refer to Figure 1-3 As shown, a semi-trailer traction device of this embodiment includes a front connecting seat 1 and a rear connecting seat 2, and a connecting component is provided between the front connecting seat 1 and the rear connecting seat 2;

[0023] The connecting component includes a socket 11 and a ring 21, wherein the socket 11 is located in the middle of the inner side of the front connecting seat 1, threaded holes 12 are provided in the middle of the upper and lower ends of the socket 11, the threaded holes 12 are threadedly connected with the main shaft 4, a turntable 41 is provided in the middle of the top end of the main shaft 4, and the ring 21 is located at the head end of the rear connecting seat 2; wherein, when the ring 21 is inserted into the socket 11 and is in a vertical line with the center points of the two groups of threaded holes 12, the main shaft 4 passes through the ring 21 to limit the connection between the front connecting seat 1 and the rear connecting seat 2.

[0024] The installation process is as follows: first, the front connecting seat 1 is installed on the power locomotive, and the rear connecting seat 2 is installed on the semi-trailer to be towed, and then the rear connecting seat 2 is pushed so that the ring 21 at the head end is inserted into the socket 11 and is located on a vertical line with the center points of the two groups of threaded holes 12. At this time, it is only necessary to rotate the turntable 41 so that the end of the main shaft 4 passes through the ring 21 and is threadedly connected with the two groups of threaded holes 12, thereby realizing a limited connection between the front connecting seat 1 and the rear connecting seat 2. At this time, the power locomotive drives the front connecting seat 1, and the semi-trailer can be towed and driven under the pull of the rear connecting seat 2.

[0025] In addition, a limit position assembly is provided between the front connecting seat 1 and the rear connecting seat 2;

[0026] The limiting assembly includes a limiting groove 13 and a limiting column 22. The limiting groove 13 is semicircular and is located in the middle of the outer side of the threaded hole 12. The limiting column 22 is located in the middle of both ends of the rear connecting seat 2. The limiting column 22 is movably installed in the middle of the inner side of the limiting groove 13. When the power front drives the semi-trailer to turn, the limiting column 22 slides in the limiting groove 13 to limit the rear connecting seat 2, which can alleviate the steering torque on the rear connecting seat 2, thereby improving the stability when the front connecting seat 1 is connected to the rear connecting seat 2. In addition, by arranging a shock-absorbing spring 23 in the middle of the bottom end of the limiting column 22, the wear caused by the limiting column 22 sliding in the limiting groove 13 can be reduced, effectively improving the service life of the traction device.

[0027] Slots 14 are provided in the middle of both ends of the socket 11 , and the ends of the slots 14 are connected to the middle of the limiting groove 13 , so as to facilitate the sliding installation of the limiting column 22 into the limiting groove 13 for limiting.

[0028] A sleeve 24 is provided in the middle of the bottom end of the limiting column 22, and the sleeve 24 is fixedly installed in the middle of the two ends of the rear connecting seat 2. The limiting column 22 is movably installed in the middle of the inner side of the sleeve 24, and the bottom end of the shock-absorbing spring 23 is fixedly installed in the middle of the inner side of the sleeve 24. The limiting column 22 slides vertically in the middle of the inner side of the sleeve 24 through the shock-absorbing spring 23. The sleeve 24 plays a role of limiting and stabilizing the installation of the limiting column 22, and the shock-absorbing spring 23 plays a role of elastic shock absorption. When the semi-trailer is subjected to force and bumps, the elastic shock absorption by the shock-absorbing spring 23 can alleviate the force on the limiting column 22 and reduce the wear of the limiting column 22.

[0029] A fixing seat 3 is provided at the bottom of both ends of the front connecting seat 1, and a plurality of fixing holes 31 are provided in the inner middle part of the fixing seat 3. By installing fixing bolts in the fixing holes 31, the front connecting seat 1 can be installed at the tail of the power front for traction.

[0030] Reinforcing ribs 25 are provided at the middle of both ends of the rear connecting seat 2 to improve the strength of the rear connecting seat 2. A mounting plate 26 is provided at the end of the rear connecting seat 2, and the rear connecting seat 2 can be fixedly installed on the front end of the semi-trailer through the mounting plate 26 to realize the towing work of the semi-trailer.

[0031] The working principle of the utility model is:

[0032] When it is needed to be used, firstly the front connecting seat 1 is fixedly installed on the tail of the power locomotive through the fixing seat 3, and the rear connecting seat 2 is fixedly installed on the towing part of the semi-trailer through the mounting plate 26.

[0033] At this time, by inserting the front end of the rear connecting seat 2 into the front connecting seat 1, the ring 21 is inserted into the socket 11 and is on the same straight line with the center points of the two groups of threaded holes 12, so that it is convenient for the staff to rotate the main shaft 4, so that the main shaft 4 passes through the ring 21, and then is threadedly connected with the two groups of threaded holes 12. The connection between the front connecting seat 1 and the rear connecting seat 2 can be limited by the main shaft 4, thereby improving the stability of the connection between the front connecting seat 1 and the rear connecting seat 2, so that the power head can tow the semi-trailer.

[0034] In addition, by providing a limiting assembly between the front connecting seat 1 and the rear connecting seat 2, when the power front drives the semi-trailer to turn, the limiting column 22 slides in the limiting groove 13 to limit the rear connecting seat 2, which can alleviate the steering torque on the rear connecting seat 2, thereby improving the stability when the front connecting seat 1 and the rear connecting seat 2 are connected, and by providing a shock-absorbing spring 23 in the middle of the bottom end of the limiting column 22, the wear caused by the limiting column 22 sliding in the limiting groove 13 can be reduced, effectively improving the service life of the traction device.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A semitrailer traction device, comprising a front connecting seat (1) and a rear connecting seat (2), characterized in that: A connecting component is provided between the front connecting seat (1) and the rear connecting seat (2); The connection assembly comprises a socket (11) and a collar (21), wherein the socket (11) is located at the middle of the inner side of the front connecting seat (1), threaded holes (12) are provided at the middle of the upper and lower ends of the socket (11), the threaded holes (12) are threadedly connected to the main shaft (4), and the collar (21) is located at the head end of the rear connecting seat (2); When the collar (21) is inserted into the socket (11) and is in a vertical line with the center points of the two sets of threaded holes (12), the main shaft (4) passes through the collar (21) to limit the connection between the front connecting seat (1) and the rear connecting seat (2); A limit position component is also provided between the front connecting seat (1) and the rear connecting seat (2); The limiting assembly comprises a limiting groove (13) and a limiting column (22); the limiting groove (13) is semicircular and is located at the middle of the outer side of the threaded hole (12); the limiting column (22) is located at the middle of both ends of the rear connecting seat (2); the limiting column (22) is movably mounted at the middle of the inner side of the limiting groove (13); and a shock absorbing spring (23) is arranged at the middle of the bottom end of the limiting column (22).

2. A semitrailer traction device according to claim 1, characterized in that: Slots (14) are provided in the middle of both ends of the socket (11), and the ends of the slots (14) are connected to the middle of the limiting groove (13).

3. A semitrailer traction device according to claim 1, characterized in that: A sleeve (24) is provided at the middle of the bottom end of the limiting column (22); the sleeve (24) is fixedly mounted at the middle of both ends of the vehicle rear connecting seat (2); the limiting column (22) is movably mounted at the middle of the inner side of the sleeve (24); the bottom end of the shock absorbing spring (23) is fixedly mounted at the middle of the inner side of the sleeve (24); the limiting column (22) is vertically slidable at the middle of the inner side of the sleeve (24) through the shock absorbing spring (23).

4. A semitrailer traction device according to claim 1, characterized in that: A fixing seat (3) is provided at the bottom of both ends of the vehicle head connecting seat (1), and a plurality of groups of fixing holes (31) are provided at the inner middle portion of the fixing seat (3).

5. A semitrailer traction device according to claim 3, characterized in that: Reinforcing ribs (25) are provided at the middle of both ends of the rear vehicle connection seat (2), and a mounting plate (26) is provided at the end of the rear vehicle connection seat (2).

6. A semitrailer traction device according to claim 1, characterized in that: A rotating disk (41) is provided at the middle of the top end of the main shaft (4).

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