阅读说明：本技术 一种挂车牵引钩结构 (Trailer towing hook structure ) 是由 李源 于 2021-10-20 设计创作，主要内容包括：本发明提供一种应用于挂车技术领域的挂车牵引钩结构,所述的挂车牵引钩结构的引车连接柱(1)布置在牵引车后部(4),挂车连接柱(2)布置在挂车前部(5),牵引车后部(4)设置第一伸缩气缸(8),牵引车连接柱(1)表面沿牵引车连接柱(1)表面一周设置第一环形槽(10),穿过第一伸缩气缸(8)的第一伸缩杆(9)的第一定位螺杆(11)设置为能够穿过连接柱套件(3)上的第一螺纹孔延伸到第一环形槽(10)内的结构,本发明所述的挂车牵引钩结构,结构简单,成本低,能够方便快捷实现牵引车和挂车的钩挂连接,并且牵引车牵引挂车行驶时受力可靠,不易脱落,牵引车和挂车分离时牵引钩方便取下,提高使用中的便利性和安全性。(The invention provides a trailer towing hook structure applied to the technical field of trailers, wherein a towing connecting post (1) of the trailer towing hook structure is arranged at the rear part (4) of a towing vehicle, a trailer connecting post (2) is arranged at the front part (5) of the trailer, a first telescopic cylinder (8) is arranged at the rear part (4) of the towing vehicle, a first annular groove (10) is arranged on the surface of the towing vehicle connecting post (1) along the surface of the towing vehicle connecting post (1) in a circle, a first positioning screw rod (11) of a first telescopic rod (9) penetrating through the first telescopic cylinder (8) is arranged into a structure capable of penetrating through a first threaded hole in a connecting post sleeve (3) and extending into the first annular groove (10). The tractor hook is not easy to fall off, the tractor hook is convenient to take off when the tractor and the trailer are separated, and convenience and safety in use are improved.)

1. A trailer towing hook structure which is characterized in that: trailer towing hook structure include tractor spliced pole (1), trailer spliced pole (2), spliced pole external member (3), draw car spliced pole (1) and arrange at tractor rear portion (4), trailer spliced pole (2) are arranged at trailer front portion (5), set up tractor spliced pole trepanning (6) and trailer spliced pole trepanning (7) on towing hook external member (3), tractor rear portion (4) set up first telescopic cylinder (8), tractor spliced pole (1) surface sets up first ring channel (10) along tractor spliced pole (1) surface a week, first positioning screw (11) of first telescopic link (9) of passing first telescopic cylinder (8) set up to the structure that can pass the first screw hole on spliced pole external member (3) and extend to in first ring channel (10).

2. Trailer tow hitch hook construction according to claim 1, characterized in that: trailer traction couple structure hang rear portion (5) still set up second telescopic cylinder (12), trailer spliced pole (2) surface sets up second ring channel (14) along trailer spliced pole (2) surface a week, second positioning screw (15) of second telescopic link (13) that pass second telescopic cylinder (12) set up to the structure that can pass the second screw hole on spliced pole external member (3) and extend to in second ring channel (14).

3. A trailer hitch structure as claimed in claim 1 or 2, wherein: the towing connecting column (1) of the trailer towing hook structure is vertically arranged at the frame position of the rear part (4) of the towing vehicle, and the trailer connecting column (2) is vertically arranged at the frame position of the front part (5) of the trailer.

4. A trailer hitch structure as claimed in claim 1 or 2, wherein: the tractor connecting column sleeve hole (6) and the trailer connecting column sleeve hole (7) are arranged in parallel.

5. A trailer hitch structure as claimed in claim 1 or 2, wherein: the outer ring of the tractor connecting column (1) is provided with a first bearing (16).

6. A trailer hitch structure as claimed in claim 1 or 2, wherein: and a second bearing (17) is arranged on the outer ring of the trailer connecting column (2).

7. A trailer hitch structure as claimed in claim 1 or 2, wherein: the first telescopic cylinder (8) is arranged in parallel with the tractor positioning column (1).

8. The trailer hitch structure of claim 2, wherein: and the second telescopic cylinder (12) is arranged in parallel with the trailer positioning column (2).

9. A trailer hitch structure as claimed in claim 1 or 2, wherein: the tractor connecting column (1) and the tractor rear part (4) are of an integrated structure.

10. The trailer hitch structure of claim 2, wherein: the trailer connecting column (2) and the front part (5) of the trailer are of an integrated structure.

Technical Field

The invention belongs to the technical field of trailers, and particularly relates to a trailer towing hook structure.

Background

In the field of large vehicles such as trucks, trailers are required, and the connection of the trailer to a tractor requires the use of a towing hook. The towing hook in the prior art is complex in structure and high in cost, is simple in structure, is poor in bearing force, is easy to fall off, is inconvenient to disassemble and cannot meet requirements.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the tractor traction hook structure is simple in structure, low in cost, capable of conveniently and quickly achieving connection of a tractor and a trailer hook, reliable in stress when the tractor pulls the trailer to run, not prone to falling off, convenient to take down when the tractor and the trailer are separated, and capable of improving convenience in use and safety.

To solve the technical problems, the invention adopts the technical scheme that:

the invention relates to a trailer traction hook structure which comprises a tractor connecting post, a trailer connecting post and a connecting post kit, wherein the tractor connecting post is arranged at the rear part of a tractor, the trailer connecting post is arranged at the front part of the trailer, a tractor connecting post sleeve hole and a trailer connecting post sleeve hole are arranged on the traction hook kit, a first telescopic cylinder is further arranged at the rear part of the tractor, a first annular groove is formed in the surface of the tractor connecting post along the periphery of the surface of the tractor connecting post, and a first positioning screw rod of a first telescopic rod penetrating through the first telescopic cylinder is arranged in a structure capable of penetrating through a first threaded hole in the connecting post kit and extending into the first annular groove.

The trailer rear portion of trailer traction couple structure still set up the flexible cylinder of second, trailer spliced pole surface sets up the second ring channel along trailer spliced pole surface a week, the second positioning screw of the second telescopic link that passes the flexible cylinder of second sets up to the structure that can pass the second screw hole on the spliced pole external member and extend to in the second ring channel.

The trailer towing hook structure is characterized in that a towing connecting column of the trailer towing hook structure is vertically arranged at the rear frame position of the towing vehicle, and a trailer connecting column is vertically arranged at the front frame position of the trailer.

The tractor connecting column sleeve hole and the trailer connecting column sleeve hole are arranged in parallel.

And the outer ring of the connecting column of the tractor is provided with a first bearing.

And the outer ring of the trailer connecting column is provided with a second bearing.

The first telescopic cylinder is arranged in parallel with the tractor positioning column.

And the second telescopic cylinder is arranged in parallel with the trailer positioning column.

The tractor connecting column and the rear part of the tractor are of an integrated structure.

The trailer connecting column and the front part of the trailer are of an integrated structure.

By adopting the technical scheme of the invention, the following beneficial effects can be obtained:

the trailer towing hook structure provided by the invention is characterized in that a towing vehicle and a trailer are connected through a connecting column kit. When in connection, the tractor connecting column trepanning of the connecting column kit is sleeved on the tractor connecting column, and the trailer connecting column trepanning is sleeved on the trailer connecting column. Then, first positioning bolt passes the spliced pole external member and extends to in the first ring channel, at this moment, effectively prevent tractor spliced pole and spliced pole external member at upper and lower direction relative motion, meanwhile, second positioning bolt passes the spliced pole external member and extends to in the second ring channel, at this moment, effectively prevent trailer spliced pole and spliced pole external member at upper and lower direction relative motion, thus, realize the reliable connection of spliced pole external member, and, do not influence the relative rotation of tractor spliced pole and spliced pole external member, do not influence the relative rotation of trailer spliced pole and spliced pole external member yet, satisfy vehicle user demand. And when the connecting column external member needs to be disassembled and the tractor and the trailer are separated, the first positioning screw rod is unscrewed firstly, so that the first positioning screw rod exits from the first annular groove, the second positioning screw rod is unscrewed, so that the second positioning screw rod exits from the second annular groove, at the moment, the first telescopic cylinder and the second telescopic cylinder are controlled by the control part to synchronously extend out, the connecting column external member is driven to move upwards, the connecting column of the tractor and the connecting column of the trailer are separated until the connecting column and the trailer completely exit, then the cushion block is arranged at the lower part of the connecting column external member, the first positioning screw rod and the second positioning screw rod are loosened at the moment, the connecting column external member can be lifted away at the moment, and the dismantling of the connecting column external member is completed. When the device is installed, the reverse steps are adopted. The structure is convenient to use and high in reliability. The trailer towing hook structure provided by the invention has the advantages that the structure is simple, the cost is low, the hooking connection of the towing vehicle and the trailer can be conveniently and quickly realized, the towing vehicle towing the trailer runs reliably under stress and is not easy to fall off, the towing hook is convenient to take down when the towing vehicle and the trailer are separated, and the convenience and the safety in use are improved.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic structural view of a trailer hitch structure according to the present invention;

in the drawings, the reference numbers are respectively: 1. a tractor connecting column; 2. a trailer connecting column; 3. a connecting column kit; 4. a rear of the tractor; 5. the front part of the trailer; 6. a tractor connecting column trepanning; 7. a trailer connecting column trepanning; 8. a first telescopic cylinder; 9. a first telescopic rod; 10. a first annular groove; 11. a first positioning screw; 12. a second telescopic cylinder; 13. a second telescopic rod; 14. a second annular groove; 15. a second positioning screw; 16. a first bearing; 17. a second bearing.

Detailed Description

The following detailed description of the embodiments of the present invention, such as the shapes and structures of the components, the mutual positions and connection relations among the components, the functions and operation principles of the components, will be made by referring to the accompanying drawings and the description of the embodiments:

as shown in fig. 1, the invention relates to a trailer towing hook structure, which comprises a towing vehicle connecting column 1, a trailer connecting column 2 and a connecting column set 3, wherein the towing vehicle connecting column 1 is arranged at the rear part 4 of a towing vehicle, the trailer connecting column 2 is arranged at the front part 5 of a trailer, a towing vehicle connecting column sleeve hole 6 and a trailer connecting column sleeve hole 7 are arranged on the towing hook set 3, a first telescopic cylinder 8 is further arranged at the rear part 4 of the towing vehicle, a first annular groove 10 is arranged on the surface of the towing vehicle connecting column 1 along a circumference of the surface of the towing vehicle connecting column 1, and a first positioning screw rod 11 of a first telescopic rod 9 penetrating through the first telescopic cylinder 8 is arranged to be a structure capable of penetrating through a first threaded hole in the connecting column set 3 and extending into the first annular groove 10. The trailer rear portion 4 of trailer traction couple structure still set up second telescopic cylinder 12, trailer spliced pole 2 surface sets up second ring channel 14 along trailer spliced pole 2 surface a week, the second positioning screw 15 that passes second telescopic rod 13 of second telescopic cylinder 12 sets up to the structure that can pass the second screw hole on the spliced pole external member 3 and extend to in the second ring channel 14. The tractor and the trailer are connected through the connecting column kit 3. When in connection, the tractor connecting column trepanning 6 of the connecting column kit 3 is sleeved on the tractor connecting column, and the trailer connecting column trepanning 7 is sleeved on the trailer connecting column. Then, first positioning bolt passes the spliced pole external member and extends to in the first ring channel, at this moment, effectively prevent tractor spliced pole and spliced pole external member at upper and lower direction relative motion, meanwhile, second positioning bolt passes the spliced pole external member and extends to in the second ring channel, at this moment, effectively prevent trailer spliced pole and spliced pole external member at upper and lower direction relative motion, thus, realize the reliable connection of spliced pole external member, and, do not influence the relative rotation of tractor spliced pole and spliced pole external member, do not influence the relative rotation of trailer spliced pole and spliced pole external member yet, satisfy vehicle user demand. And when the connecting column external member needs to be disassembled and the tractor and the trailer are separated, the first positioning screw rod is unscrewed firstly, so that the first positioning screw rod exits from the first annular groove, the second positioning screw rod is unscrewed, so that the second positioning screw rod exits from the second annular groove, at the moment, the first telescopic cylinder and the second telescopic cylinder are controlled by the control part to synchronously extend out, the connecting column external member is driven to move upwards, the connecting column of the tractor and the connecting column of the trailer are separated until the connecting column and the trailer completely exit, then the cushion block is arranged at the lower part of the connecting column external member, the first positioning screw rod and the second positioning screw rod are loosened at the moment, the connecting column external member can be lifted away at the moment, and the dismantling of the connecting column external member is completed. When the device is installed, the reverse steps are adopted. The trailer towing hook structure provided by the invention has the advantages that the structure is simple, the cost is low, the hooking connection of the towing vehicle and the trailer can be conveniently and quickly realized, the towing vehicle towing the trailer runs reliably under stress and is not easy to fall off, the towing hook is convenient to take down when the towing vehicle and the trailer are separated, and the convenience and the safety in use are improved.

The towing connecting column 1 of the trailer towing hook structure is vertically arranged at the position of a frame 4 at the rear part of the towing vehicle, and the trailer connecting column 2 is vertically arranged at the position of a frame 5 at the front part of the trailer.

The tractor connecting column sleeve hole 6 and the trailer connecting column sleeve hole 7 are arranged in parallel.

The outer ring of the tractor connecting column 1 is provided with a first bearing 16. The inner ring fixed mounting of first bearing can set up the two-stage boss of diameter difference on the tractor spliced pole from the bottom up on the tractor spliced pole on, installs the different first bearing of an inner ring diameter on every stage boss respectively, and the outer lane diameter size of two first bearings is the same to adaptation tractor spliced pole trepanning 6.

And a second bearing 17 is arranged on the outer ring of the trailer connecting column 2. The inner ring of the second bearing is fixedly arranged on the trailer connecting column, two stages of bosses with different diameters can be arranged on the trailer connecting column from bottom to top, the second bearing with the different inner ring diameters is arranged on each stage of boss, and the outer ring diameters of the two second bearings are the same in size so as to adapt to the sleeve hole 7 of the trailer connecting column.

The first telescopic cylinder 8 is arranged in parallel with the tractor positioning column 1.

And the second telescopic cylinder 12 is arranged in parallel with the trailer positioning column 2.

The tractor connecting column 1 and the tractor rear part 4 are of an integrated structure. Above-mentioned structure for tractor spliced pole 1 preparation is convenient, and bulk strength is high moreover, ensures the security of connecting.

The trailer connecting column 2 and the front part 5 of the trailer are of an integrated structure. Above-mentioned structure for trailer spliced pole 2 preparation is convenient, and bulk strength is high moreover, ensures the security of connecting.

The trailer towing hook structure provided by the invention is characterized in that a towing vehicle and a trailer are connected through a connecting column kit. When in connection, the tractor connecting column trepanning of the connecting column kit is sleeved on the tractor connecting column, and the trailer connecting column trepanning is sleeved on the trailer connecting column. Then, first positioning bolt passes the spliced pole external member and extends to in the first ring channel, at this moment, effectively prevent tractor spliced pole and spliced pole external member at upper and lower direction relative motion, meanwhile, second positioning bolt passes the spliced pole external member and extends to in the second ring channel, at this moment, effectively prevent trailer spliced pole and spliced pole external member at upper and lower direction relative motion, thus, realize the reliable connection of spliced pole external member, and, do not influence the relative rotation of tractor spliced pole and spliced pole external member, do not influence the relative rotation of trailer spliced pole and spliced pole external member yet, satisfy vehicle user demand. And when the connecting column external member needs to be disassembled and the tractor and the trailer are separated, the first positioning screw rod is unscrewed firstly, so that the first positioning screw rod exits from the first annular groove, the second positioning screw rod is unscrewed, so that the second positioning screw rod exits from the second annular groove, at the moment, the first telescopic cylinder and the second telescopic cylinder are controlled by the control part to synchronously extend out, the connecting column external member is driven to move upwards, the connecting column of the tractor and the connecting column of the trailer are separated until the connecting column and the trailer completely exit, then the cushion block is arranged at the lower part of the connecting column external member, the first positioning screw rod and the second positioning screw rod are loosened at the moment, the connecting column external member can be lifted away at the moment, and the dismantling of the connecting column external member is completed. When the device is installed, the reverse steps are adopted. The structure is convenient to use and high in reliability. The trailer towing hook structure provided by the invention has the advantages that the structure is simple, the cost is low, the hooking connection of the towing vehicle and the trailer can be conveniently and quickly realized, the towing vehicle towing the trailer runs reliably under stress and is not easy to fall off, the towing hook is convenient to take down when the towing vehicle and the trailer are separated, and the convenience and the safety in use are improved.

The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, changes and equivalents of the embodiments of the invention, and its application to other applications without departing from the spirit and scope of the invention.