Adjustable trailer assembly

Abstract

The invention relates to the field of trailer assemblies, in particular to an adjustable trailer assembly which comprises a trailer arm connecting rod used for installing a traction vehicle and a traction ball connecting rod used for installing a trailer, the traction ball connecting rod is fixedly connected with the trailer arm connecting rod through an adjusting assembly, and a traction ball seat is fixed to the end of the traction ball connecting rod. The trailer traction device has the advantages that the trailer traction device has the function of connecting a traction vehicle and a trailer, the vertical height of the traction ball connecting rod and the vertical height of the trailer arm connecting rod can be conveniently adjusted, and therefore the trailer traction device can be well suitable for different trailer traction operations and is wide in application range; and the traction ball is convenient to assemble and suitable for popularization and use.

Description

Technical Field

[0001] The present invention relates to the field of trailer components, and more particularly to adjustable trailer components. Background Art

[0002] Trailer components are an important part of a trailer (or tractor), and are widely used in the field of transportation, especially in long-distance transportation, cargo handling, and commercial vehicles. Through these components, a trailer can be safely and effectively connected to a towing vehicle to achieve the transportation of loads.

[0003] Existing trailer components usually have fixed positions and cannot adjust the vertical height between the towing ball connecting rod and the trailer arm connecting rod in the trailer components according to the usage situation. Different trailers often require towing ball connecting rods of different heights for connection. Therefore, the existing trailer components are not yet convenient enough to use.

[0004] Therefore, it is necessary to invent an adjustable trailer component. Summary of the Invention

[0005] For this purpose, the present invention provides an adjustable trailer component to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An adjustable trailer component includes a trailer arm connecting rod for installing a towing vehicle and a towing ball connecting rod for installing a trailer. The towing ball connecting rod is fixedly connected to the trailer arm connecting rod through an adjusting component. A towing ball seat is fixed at the end of the towing ball connecting rod, and a towing ball connection component is detachably installed on the towing ball seat.

[0007] The adjusting component includes two clamping pieces. The trailer arm connecting rod is rotatably connected to the tops of the two clamping pieces through a first pin shaft. The towing ball connecting rod is rotatably connected to the bottoms of the two clamping pieces through a second pin shaft. A plurality of adjusting holes are formed in the upper and lower parts of the two clamping pieces, and corresponding angle value marks are provided on one side of each adjusting hole. The end of the trailer arm connecting rod is fixedly connected to the upper parts of the two clamping pieces through a first plug pin, and the end of the towing ball connecting rod is fixedly connected to the lower parts of the two clamping pieces through a second plug pin. The trailer arm connecting rod and the towing ball connecting rod are arranged in parallel.

[0008] Preferably, the first plug pin can be inserted into any adjusting hole in the upper part of the clamping piece, and the second plug pin can be inserted into any adjusting hole in the lower part of the clamping piece. When the trailer arm connecting rod and the towing ball connecting rod are arranged in parallel, the first plug pin and the second plug pin are respectively inserted into the adjusting holes in the upper and lower parts of the clamping piece with the same angle value marks.

[0009] Preferably, the towing ball connection assembly includes a connection perforation vertically opened in the middle of the towing ball seat, and a first cylindrical keyway is vertically opened on one side of the wall of the connection perforation.

[0010] Preferably, the towing ball connection assembly further includes an upper towing ball and a lower towing ball. Towing ball shafts are fixed at the opposite ends of the upper towing ball and the lower towing ball, and the upper towing ball, the lower towing ball and the towing ball shafts are set as an integral structure.

[0011] Preferably, the lower towing ball and the towing ball shaft penetrate through the connection perforation, the surface of the towing ball shaft fits against the wall of the connection perforation, a second cylindrical keyway is opened on the side of the towing ball bearing, a metal column block is embedded in the second cylindrical keyway, and the metal column block is inserted into the first cylindrical keyway.

[0012] Preferably, an upper cover is fixed at the top end of the towing ball shaft, a movable bottom cover is threadedly connected to the bottom of the towing ball shaft, a circular accommodating groove is opened at the center of the bottom of the towing ball seat, the circular accommodating groove communicates with the connection perforation, and the diameter of the circular accommodating groove is larger than the diameter of the connection perforation.

[0013] Preferably, the bottom end of the upper cover abuts against the top end of the towing ball seat, the top end of the movable bottom cover is located in the circular accommodating groove, and the movable bottom cover abuts against the bottom end of the towing ball seat.

[0014] The beneficial effects of the present invention are as follows: By the combined use of the trailer arm connecting rod, the towing ball connecting rod, the adjusting assembly, the towing ball seat and the towing ball connection assembly, while having the function of connecting the towing vehicle and the trailer, the vertical height between the towing ball connecting rod and the trailer arm connecting rod can be conveniently adjusted, so that it can be well applicable to different trailer towing operations, with a wide application range, and the towing ball is convenient to assemble, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structure diagram provided by the present invention;

[0016] Figure 2 is an exploded structure diagram provided by the present invention;

[0017] Figure 3 is an exploded structure diagram provided by the present invention;

[0018] Figure 4 is a schematic structural diagram provided by the present invention when the towing ball connecting rod is in the lowest position;

[0019] Figure 5 is a schematic structural diagram provided by the present invention when the towing ball connecting rod is in the highest position.

[0020] In the figure: 1. Trailer arm connecting rod; 2. Towing ball connecting rod; 3. Towing ball seat; 4. Clip; 5. First pin shaft; 6. Second pin shaft; 7. Adjusting hole; 8. Angle value marking; 9. First plug pin; 10. Second plug pin; 11. Connecting perforation; 12. First cylindrical keyway; 13. Upper towing ball; 14. Lower towing ball; 15. Towing ball shaft body; 16. Second cylindrical keyway; 17. Metal column block; 18. Upper cover; 19. Movable bottom cover; 20. Circular accommodating groove. Detailed implementation manner

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0022] Please refer to the attached Figures 1-5 drawing. The adjustable trailer assembly provided by the present invention includes a trailer arm connecting rod 1 for installing a towing vehicle and a towing ball connecting rod 2 for installing a trailer. The towing ball connecting rod 2 is fixedly connected to the trailer arm connecting rod 1 through an adjusting assembly. A towing ball seat 3 is fixed at the end of the towing ball connecting rod 2, and a towing ball connection assembly is detachably installed on the towing ball seat 3;

[0023] The adjusting assembly includes two clamping pieces 4. The trailer arm connecting rod 1 is rotatably connected to the tops of the two clamping pieces 4 through a first pin shaft 5, and the towing ball connecting rod 2 is rotatably connected to the bottoms of the two clamping pieces 4 through a second pin shaft 6. It should be noted that a fixing hole position (not marked in the figure) is provided at both the top and the bottom of the two clamping pieces 4, and this fixing hole position is used to install the first pin shaft 5 and the second pin shaft 6. A number of adjusting holes 7 are provided in both the upper and lower parts of the two clamping pieces 4, and corresponding angle value marks 8 are provided on one side of each adjusting hole 7. It should be noted that in the present invention, the number of adjusting holes 7 is divided into four groups, and the four groups of adjusting holes 7 are respectively located in the upper and lower parts of the two clamping pieces 4. The number of each group of adjusting holes 7 is preferably set to 8. The angle value marks 8 provided on one side of the 8 adjusting holes 7 in the same group are respectively preferably set to 0°, 7.5°, 15°, 22.5°, 30°, 37.5°, 45°, 52.5°. Moreover, the 0° hole position in the upper part of the clamping piece 4 corresponds to the 0° hole position in the lower part of the clamping piece 4, the 47.5° hole position in the upper part of the clamping piece 4 corresponds to the 7.5° hole position in the lower part of the clamping piece 4, the 15° hole position in the upper part of the clamping piece 4 corresponds to the 15° hole position in the lower part of the clamping piece 4, the 22.5° hole position in the upper part of the clamping piece 4 corresponds to the 22.5° hole position in the lower part of the clamping piece 4, the 30° hole position in the upper part of the clamping piece 4 corresponds to the 30° hole position in the lower part of the clamping piece 4, the 37.5° hole position in the upper part of the clamping piece 4 corresponds to the 37.5° hole position in the lower part of the clamping piece 4, the 45° hole position in the upper part of the clamping piece 4 corresponds to the 45° hole position in the lower part of the clamping piece 4, and the 52.5° hole position in the upper part of the clamping piece 4 corresponds to the 52.5° hole position in the lower part of the clamping piece 4. The end of the trailer arm connecting rod 1 is fixedly connected to the upper parts of the two clamping pieces 4 by inserting a first pin 9, and the end of the towing ball connecting rod 2 is fixedly connected to the lower parts of the two clamping pieces 4 by inserting a second pin 10. The trailer arm connecting rod 1 and the towing ball connecting rod 2 are arranged in parallel;

[0024] The first pin 9 can be inserted into any adjusting hole 7 in the upper part of the clamping piece 4, and the second pin 10 can be inserted into any adjusting hole 7 in the lower part of the clamping piece 4. When the trailer arm connecting rod 1 and the towing ball connecting rod 2 are arranged in parallel, the first pin 9 and the second pin 10 are respectively inserted into the adjusting holes 7 in the upper and lower parts of the clamping piece 4 with the same angle value mark 8. Specifically, as Figure 4 shown, when the first pin 9 and the second pin 10 are respectively inserted into the adjusting holes 7 on one side of the upper and lower parts of the clamping piece 4 with the angle value mark 8 of 52.5°, at this time, the trailer arm connecting rod 1 and the towing ball connecting rod 2 are parallel, and at this time, the towing ball connecting rod 2 is in the lowest position. As Figure 5As shown, when the first bolt 9 and the second bolt 10 are respectively inserted into the adjustment holes 7 at the side where the angular value markings 8 at the upper and lower parts of the clamping piece 4 are 0°, at this time, the trailer arm connecting rod 1 and the towing ball connecting rod 2 are parallel, and at this time, the towing ball connecting rod 2 is at the highest position. Therefore, the user can adjust by arranging the hole positions from the 0° adjustment hole 7 to the 52.5 adjustment hole 7 in sequence. In this way, the height of the towing ball connecting rod 2 will be one inch away from its original position, that is, as the angular value marking increases, the height of the towing ball connecting rod 2 decreases, so as to adjust the different heights of the towing ball connecting rod 2. Moreover, the trailer arm connecting rod 1 and the towing ball connecting rod 2 can be connected in the correct orientation or in the reverse orientation. When connected in the correct orientation, that is, when the trailer arm connecting rod 1 is installed at the top of the clamping piece 4 and the towing ball connecting rod 2 is installed at the bottom of the clamping piece 4, at this time, as the angular value marking increases, the height of the towing ball connecting rod 2 decreases downward. When connected in the reverse orientation, that is, when the trailer arm connecting rod 1 is installed at the bottom of the clamping piece 4 and the towing ball connecting rod 2 is installed at the top of the clamping piece 4, at this time, as the angular value marking increases, the height of the towing ball connecting rod 2 increases upward;

[0025] To sum up, while the adjustable component has the function of connecting the towing vehicle and the trailer, the user only needs to insert two bolts, namely the first bolt 9 and the second bolt 10, into the corresponding positions for adjustment, without disassembling the two clamping pieces 4 and the trailer arm connecting rod 1 and the towing ball connecting rod 2, and can conveniently adjust the vertical height between the towing ball connecting rod 2 and the trailer arm connecting rod 1, so as to be well applicable to different trailer towing operations and has a wide range of applications;

[0026] The towing ball connection component includes a connecting through hole 11 which is vertically opened in the middle of the towing ball seat 3. One side of the hole wall of the connecting through hole 11 is vertically provided with a first cylindrical keyway 12. The towing ball connection component further includes an upper towing ball 13 and a lower towing ball 14. The opposite ends of the upper towing ball 13 and the lower towing ball 14 are fixed with a towing ball shaft body 15. The upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 are set as an integral structure. The lower towing ball 14 and the towing ball shaft body 15 pass through the connecting through hole 11. The surface of the towing ball shaft body 15 is in contact with the hole wall of the connecting through hole 11. A second cylindrical keyway 16 is opened on the side of the towing ball bearing 15, and a metal column block 17 is embedded in the second cylindrical keyway 16. The metal column block 17 is inserted into the first cylindrical keyway 12. Specifically, under the action of the metal column block 17, the towing ball shaft body 15 can be effectively prevented from rotating in the connecting through hole 11;

[0027] A top cover 18 is fixed to the top end of the towing ball shaft body 15. A movable bottom cover 19 is threadedly connected to the bottom of the towing ball shaft body 15. A circular accommodating groove 20 is provided at the center of the bottom of the towing ball seat 3. The circular accommodating groove 20 communicates with the connecting through hole 11. The diameter of the circular accommodating groove 20 is larger than the aperture of the connecting through hole 11. The bottom end of the top cover 18 abuts against the top end of the towing ball seat 3. The top end of the movable bottom cover 19 is located within the circular accommodating groove 20. The movable bottom cover 19 abuts against the bottom end of the towing ball seat 3. Specifically, under the action of the top cover 18, the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure cannot move downward. Under the action of the movable bottom cover 19, the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure cannot move upward. With the use of the metal column block 17, the stability of the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure when assembled on the towing ball seat 3 can be effectively ensured. Moreover, the movable bottom cover 19 is convenient for disassembly and assembly, so that the user can quickly disassemble and assemble the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure, that is, it is convenient to assemble the towing ball.

[0028] The using process of the present invention is as follows: The user adjusts the height of the towing ball connecting rod 2 according to the docking height between the actual required trailer and the upper towing ball 13 and the lower towing ball 14. During adjustment, the user can adjust in the order of the hole positions from the 0° adjustment hole 7 to the 52.5° adjustment hole 7, that is, insert the first pin 9 and the second pin 10 into the adjustment holes 7 with different angle value markings on the upper and lower parts of the clip 4 respectively, but it is necessary to make the first pin 9 and the second pin 10 inserted into the adjustment holes 7 with the same angle value markings, so that the trailer arm connecting rod 1 and the towing ball connecting rod 2 always remain parallel. Therefore, while having the function of connecting the towing vehicle and the trailer, this adjustable component can also conveniently adjust the vertical height between the towing ball connecting rod 2 and the trailer arm connecting rod 1, so as to be well applicable to different trailer towing operations and have a wide application range;

[0029] After the height adjustment of the towing ball connecting rod 2 is completed, the user takes out the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure, embeds the metal column block 17 into the second cylindrical keyway 16, and passes the lower towing ball 14 and the towing ball shaft body 15 through the connection perforation 11 on the towing ball seat 3. When passing through, align the metal column block 17 with the first cylindrical keyway 12 so that the metal column block 17 can be smoothly inserted into the first cylindrical keyway 12. Then, take out the movable bottom cover 19 and threadedly install it at the bottom of the towing ball shaft body 15. At this time, under the action of the upper cover 18, the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure cannot move downwards. Under the action of the movable bottom cover 19, the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure cannot move upwards. With the use of the metal column block 17, the stability of the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure assembled on the towing ball seat 3 can be effectively guaranteed, and the movable bottom cover 19 is convenient for disassembly and assembly, so that the user can quickly disassemble and assemble the upper towing ball 13, the lower towing ball 14 and the towing ball shaft body 15 of the integrated structure, that is, it is convenient to assemble the towing ball.

[0030] The above are only the preferred embodiments of the present invention. Any person skilled in the art can modify the present invention by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention falls within the scope of protection required by the present invention.

Claims

1. An adjustable trailer assembly, comprising a trailer arm connecting rod (1) for mounting a towing vehicle and a towing ball connecting rod (2) for mounting a trailer, characterized in that: The towing ball connecting rod (2) is fixedly connected to the trailer arm connecting rod (1) via an adjustment assembly, a towing ball seat (3) is fixed to the end of the towing ball connecting rod (2), and a towing ball connecting assembly is detachably mounted on the towing ball seat (3); The adjustment assembly comprises two clips (4), the trailer arm connecting rod (1) is rotatably connected to the top of the two clips (4) via a first pin shaft (5), the towing ball connecting rod (2) is rotatably connected to the bottom of the two clips (4) via a second pin shaft (6), a plurality of adjustment holes (7) are provided at the upper and lower parts of the two clips (4), and corresponding angle value marks (8) are provided on one side of the adjustment holes (7), the end of the trailer arm connecting rod (1) is plugged and fixed to the upper parts of the two clips (4) via a first latch (9), and the end of the towing ball connecting rod (2) is plugged and fixed to the lower parts of the two clips (4) via a second latch (10), and the trailer arm connecting rod (1) and the towing ball connecting rod (2) are arranged in parallel.

2. The adjustable trailer assembly according to claim 1, characterized in that: The first latch (9) can be inserted into any adjustment hole (7) located at the upper part of the clip (4), and the second latch (10) can be inserted into any adjustment hole (7) located at the lower part of the clip (4). When the trailer arm connecting rod (1) and the towing ball connecting rod (2) are arranged in parallel, the first latch (9) and the second latch (10) are respectively inserted into the adjustment holes (7) located at the upper and lower parts of the clip (4) with the same angle value mark (8).

3. The adjustable trailer assembly according to claim 1, characterized in that: The traction ball connection assembly comprises a connection through hole (11), the connection through hole (11) is vertically opened in the middle of the traction ball seat (3), and a first columnar key groove (12) is vertically opened on one side of the hole wall of the connection through hole (11).

4. The adjustable trailer assembly according to claim 3, characterized in that: The traction ball connection assembly further comprises an upper traction ball (13) and a lower traction ball (14), and a traction ball shaft body (15) is fixed to the opposite ends of the upper traction ball (13) and the lower traction ball (14), and the upper traction ball (13), the lower traction ball (14) and the traction ball shaft body (15) are arranged as an integrated structure.

5. The adjustable trailer assembly according to claim 4, characterized in that: The lower traction ball (14) and the traction ball shaft body (15) pass through the connecting through hole (11), the surface of the traction ball shaft body (15) fits with the hole wall of the connecting through hole (11), and the side of the traction ball bearing (15) is provided with a second cylindrical keyway (16), and a metal column block (17) is embedded in the second cylindrical keyway (16), and the metal column block (17) is inserted into the first cylindrical keyway (12).

6. The adjustable trailer assembly according to claim 5, characterized in that: An upper cover (18) is fixed to the top of the traction ball shaft body (15), a movable bottom cover (19) is threadedly connected to the bottom of the traction ball shaft body (15), a circular receiving groove (20) is opened at the center of the bottom of the traction ball seat (3), the circular receiving groove (20) is connected to the connecting through hole (11), and the diameter of the circular receiving groove (20) is larger than the hole diameter of the connecting through hole (11).

7. The adjustable trailer assembly according to claim 6, characterized in that: The bottom end of the upper cover (18) abuts against the top end of the traction ball seat (3), the top end of the movable bottom cover (19) is located in the circular receiving groove (20), and the movable bottom cover (19) abuts against the bottom end of the traction ball seat (3).

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