High strength heavy duty dolly arm

Abstract

The utility model provides high strength heavy -duty double ball trailer arm. High strength heavy -duty double ball trailer arm includes: base, two butt joint, two butt joint respectively set up in the top and bottom of base, the front and back of base are installed with steel frame structure through two first reinforcing components respectively, the opposite side of two steel frame structures all sets up the fixed mouth, all sets up the fixed hole between two fixed mouth, first ball head structure, first ball head structure installs in the position of the top of base near one end, the position of the bottom of base near one end is installed with second ball head structure. High strength heavy -duty double ball trailer arm provided by the utility model, through the design increases the welding area, strengthens the stability that first ball head structure and second ball head structure are connected with base, further improves the connecting strength through the butt block and first reinforcing component, lays the foundation for promoting the overall load, can effectively improve the load upper limit of trailer arm.

Description

Technical Field

[0001] This utility model relates to the field of double-ball trailer arm technology, and in particular to a high-strength, heavy-duty double-ball trailer arm. Background Technology

[0002] A double-ball trailer boom is a type of car towing accessory, mainly used to connect a tractor and a trailer. It is usually made of high-strength steel, with the front end fixed to the rear bumper or chassis tow hook seat of the vehicle by bolts, and the rear end equipped with two towing ball heads of different sizes, which can be adapted to different sizes of trailer couplers. The double-ball design allows the driver to switch between different types of trailers without replacing the entire trailer boom, improving the flexibility of use.

[0003] The heavy-duty double ball trailer boom is a high-strength traction component used for trailer connection. It mainly consists of a base, ball joint, and square steel frame. The base, ball joint, and square steel frame are connected and reinforced by welding to increase load-bearing capacity.

[0004] The area where the ball joint and base are connected by weld in a traditional double-ball trailer boom is limited, and the connection method is relatively simple, which affects the connection strength of the double-ball trailer boom and restricts the improvement of load capacity.

[0005] Therefore, it is necessary to provide a high-strength, heavy-duty double-ball trailer boom to solve the above-mentioned technical problems. Summary of the Invention

[0006] This utility model provides a high-strength, heavy-duty double-ball trailer arm, which solves the problems that the limited welding area of ​​the traditional ball head and base and the relatively simple connection method affect the strength of the double-ball trailer arm and restrict its load-bearing capacity.

[0007] To solve the above-mentioned technical problems, the high-strength heavy-duty double-ball trailer boom provided by this utility model includes: a base; Two mating interfaces are respectively opened at the top and bottom of the base. The front and back of the base are respectively equipped with steel frame structures by two first reinforcing components. Fixing openings are opened on the opposite sides of the two steel frame structures, and fixing holes are opened between the two sets of fixing openings. The first ball head structure is installed at the top of the base near one end, and the second ball head structure is installed at the bottom of the base near one end. The first ball head structure and the second ball head structure are both fixedly connected to a mating block at their adjacent ends. One side of the mating block is provided with a through hole. The diameter of the bottom end of the first ball head structure and the second ball head structure is 44-49mm. The mating interface is located at one end of the top and bottom of the base, and the fixing holes penetrate the front and back of the two steel frame structures and the base. The fixing holes correspond to the mating interface and the through hole positions.

[0008] Preferably, the first ball head structure includes a chassis and a ball head, the ball head is installed at one end of the chassis, and a welding groove is formed on the outer surface of the other end of the chassis; The side of the chassis with the welding groove contacts the base, making it easy to weld the chassis to the base with welding rods, which can increase the welding strength. The base has inclined grooves on all four sides.

[0009] Preferably, the steel frame structure includes a horizontal steel plate, a vertical steel plate, and mounting holes, wherein the vertical steel plate is fixedly connected to one end of the horizontal steel plate, and the mounting holes are opened on one side of the vertical steel plate; The vertical and horizontal steel plates are formed as one piece and are distributed in a T-shape.

[0010] Preferably, the first reinforcement component includes a reinforcement rod and a limiting structure, wherein the reinforcement rod passes through a steel frame structure on one side and exits through a steel frame structure on the other side, and the limiting structure is threaded onto the outer surface of the reinforcement rod; One end of the reinforcing rod has a soil block, which, together with the limiting structure, acts as a bolt fastener.

[0011] Preferably, a connecting block is installed between the two steel frame structures near one end via a second reinforcing component.

[0012] Preferably, a rotating frame is fixedly connected to one side of the connecting block, and two rotating openings are provided on the other side of the rotating frame; The rotating frame and the connecting block are connected by welding.

[0013] Preferably, the other side of the rotating frame is rotatably connected to a docking frame via an adjusting component, and the docking frame has multiple connection holes on both the front and back sides.

[0014] Preferably, the adjustment assembly includes a fixed plate and two rotating structures, the fixed plate being mounted on one side of the docking frame, and the two rotating structures being fixed on the other side of the fixed plate; The rotating structure includes a rotating block, bearings, and a shaft.

[0015] Compared with related technologies, the high-strength heavy-duty double-ball trailer boom provided by this utility model has the following beneficial effects: This utility model provides a high-strength, heavy-duty double-ball trailer arm. To improve the connection strength and load capacity of the double-ball trailer arm, the original ball joints are replaced with a first ball joint structure and a second ball joint structure with a bottom diameter of 44-49mm. This increases the contact area between the first and second ball joint structures and the base, thereby increasing the welding area and connection strength. Simultaneously, a mating interface is provided at both the top and bottom of the base to facilitate the insertion of the mating blocks at the bottom of the first and second ball joint structures. In conjunction with a first reinforcing component passing through the fixing hole into the base and mating block, the connection strength between the ball joints and the base is further improved, while simultaneously increasing the upper limit of the load capacity. This design increases the welding area, enhances the stability of the connection between the first and second ball joint structures and the base, and further improves the connection strength through the mating block and the first reinforcing component, laying the foundation for increasing the overall load capacity and effectively raising the upper limit of the trailer arm's load capacity. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the first embodiment of the high-strength heavy-duty double-ball trailer boom provided by this utility model; Figure 2 A schematic diagram of the docking block is provided for this utility model; Figure 3 Provided for this utility model Figure 2 An enlarged view of point A shown; Figure 4 Provided for this utility model Figure 2 An enlarged view of point B shown; Figure 5 A schematic diagram of the structure of the second embodiment of the high-strength heavy-duty double-ball trailer boom provided by this utility model; Figure 6 Provided for this utility model Figure 5 A magnified view of point C shown.

[0017] Labels in the diagram: 1. Base; 2. First ball joint structure, 201, chassis, 202, ball joint; 3. First reinforcing component, 301, reinforcing rod, 302, limiting structure; 4. Steel frame structure, 401. Horizontal steel plate, 402. Vertical steel plate, 403. Mounting holes; 5. Second ball head structure; 6. Butt block; 7. Welding groove; 8. Through hole; 9. Fixing hole; 10. Butt joint; 11. Second reinforcing component; 12. Fixing port; 13. Butt bracket; 14. Connection hole. 15. Adjustment component; 151. Fixing plate; 152. Rotating structure; 16. Rotating frame, 17. Rotating opening, 18. Connecting block. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0019] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the structure of the first embodiment of the high-strength heavy-duty double-ball trailer boom provided by this utility model; Figure 2 A schematic diagram of the docking block is provided for this utility model; Figure 3 Provided for this utility model Figure 2 An enlarged view of point A shown; Figure 4 Provided for this utility model Figure 2 The enlarged view at point B is shown. The high-strength, heavy-duty double-ball trailer boom includes: base 1; Two interfaces 10 are respectively opened at the top and bottom of the base 1. The front and back of the base 1 are respectively equipped with steel frame structures 4 through two first reinforcing components 3. Fixing openings 12 are opened on the opposite sides of the two steel frame structures 4, and fixing holes 9 are opened between the two sets of fixing openings 12. A first ball head structure 2 is installed at the top of the base 1 near one end. A second ball head structure 5 is installed at the bottom of the base 1 near one end. A docking block 6 is fixedly connected to the adjacent ends of the first ball head structure 2 and the second ball head structure 5. A through hole 8 is opened on one side of the docking block 6. The diameter of the bottom end of the first ball head structure 2 and the second ball head structure 5 is 44-49mm. The interface 10 is located at the top and bottom of the base 1 near one end. The fixing hole 9 penetrates the front and back of the two steel frame structures 4 and the base 1. The fixing hole 9 corresponds to the interface 10 and the through hole 8. The first reinforcing component 3 passes through the steel frame structure 4, the base 1 and the docking block 6 through the fixing hole 9 and the through hole 8. The base 1, the ball head structure and the steel frame structure 4 are directly connected and reinforced by welding. The docking block 6 is inserted into the interface 10. The fixing port 12 is used to ensure the flatness of the surface of the first reinforcing component 3 and the steel frame structure 4.

[0020] Please refer to Figure 1 and Figure 2 The first ball head structure 2 includes a chassis 201 and a ball head 202. The ball head 202 is installed at one end of the chassis 201, and a welding groove 7 is provided at the other end of the chassis 201 on the outer surface. The side of the chassis 201 with the welding groove 7 contacts the base 1, which facilitates the welding of the chassis 201 to the base 1 with the welding rod, thereby increasing the welding strength. The four sides of the base 1 are provided with inclined grooves to increase the welding strength between the steel frame structure 4 and the base 1. The ball head 202 and the chassis 201 are also integrally formed.

[0021] Please refer to Figure 1 and Figure 2 The steel frame structure 4 includes a horizontal steel plate 401, a vertical steel plate 402, and a mounting hole 403. The vertical steel plate 402 is fixedly connected to one end of the horizontal steel plate 401, and the mounting hole 403 is opened on one side of the vertical steel plate 402. The vertical steel plate 402 and the horizontal steel plate 401 are integrally formed and are distributed in a T-shape.

[0022] Please refer to Figure 1 , Figure 2 and Figure 3 The first reinforcement component 3 includes a reinforcement rod 301 and a limiting structure 302. The reinforcement rod 301 passes through the steel frame structure 4 on one side and exits through the steel frame structure 4 on the other side. The limiting structure 302 is threaded onto the outer surface of the reinforcement rod 301. One end of the reinforcing rod 301 has a soil block, which, together with the limiting structure 302, acts as a bolt fastener.

[0023] The working principle of the high-strength, heavy-duty double-ball trailer boom provided by this utility model is as follows: The original ball joints are replaced with a first ball joint structure 2 and a second ball joint structure 5 with a bottom diameter of 44-49mm. This increases the contact area between the first ball joint structure 2 and the second ball joint structure 5 and the base 1, thereby increasing the welding area and connection strength. At the same time, a mating interface 10 is opened at the top and bottom of the base 1 to facilitate the insertion of the mating blocks 6 at the bottom of the first ball joint structure 2 and the second ball joint structure 5. With the first reinforcing component 3 passing through the fixing hole 9 through the base 1 and the mating block 6, the connection strength between the ball joint and the base 1 is further improved, and the upper limit of the load-bearing capacity is increased. In actual use, the mating blocks 6 at the bottom of the first ball joint structure 2 and the second ball joint structure 5 are first inserted into the mating interfaces 10 at the top and bottom of the base 1 and fixed by the first reinforcing component 3. Then, the two steel frame structures 4 are welded to the two sides of the base 1 by a welding structure, and the contact positions of the first ball joint structure 2 and the second ball joint structure 5 with the base 1 are welded by a welding structure, thus completing the overall assembly.

[0024] Compared with related technologies, the high-strength heavy-duty double-ball trailer boom provided by this utility model has the following beneficial effects: To improve the connection strength and load capacity of the double ball joint trailer arm, the original ball joints are replaced with a first ball joint structure 2 and a second ball joint structure 5 with a bottom diameter of 44-49mm. This increases the contact area between the first ball joint structure 2 and the second ball joint structure 5 and the base 1, thereby increasing the welding area and connection strength. Simultaneously, a mating interface 10 is provided at both the top and bottom of the base 1 to facilitate the insertion of the mating blocks 6 at the bottom of the first ball joint structure 2 and the second ball joint structure 5. In conjunction with the first reinforcing component 3 passing through the fixing hole 9 through the base 1 and the mating block 6, the connection strength between the ball joints and the base 1 is further improved, while simultaneously increasing the upper limit of the load capacity. This design increases the welding area, enhances the stability of the connection between the first ball joint structure 2 and the second ball joint structure 5 and the base 1, and further improves the connection strength through the mating block 6 and the first reinforcing component 3, laying the foundation for increasing the overall load capacity and effectively raising the upper limit of the trailer arm's load capacity. Example

[0025] Please refer to the following: Figures 5-6 , Figure 5 A schematic diagram of the structure of the second embodiment of the high-strength heavy-duty double-ball trailer boom provided by this utility model; Figure 6 Provided for this utility model Figure 5 The enlarged view at point C shows a high-strength, heavy-duty double-ball trailer boom based on the first embodiment of this application. The second embodiment of this application proposes another high-strength, heavy-duty double-ball trailer boom. The second embodiment is merely a preferred embodiment of the first embodiment, and its implementation will not affect the independent implementation of the first embodiment.

[0026] Specifically, the difference in the high-strength heavy-duty double-ball trailer boom provided in the second embodiment of this application is that, please refer to... Figure 5 A connecting block 18 is installed between the two steel frame structures 4 near one end via a second reinforcing component 11; The second reinforcing component 11 penetrates the steel frame structure 4 and the connecting block 18.

[0027] Please refer to Figure 5 A rotating frame 16 is fixedly connected to one side of the connecting block 18, and two rotating openings 17 are provided on the other side of the rotating frame 16. The rotating frame 16 and the connecting block 18 are connected by welding.

[0028] Please refer to Figure 5 The other side of the rotating frame 16 is rotatably connected to the docking frame 13 via the adjusting component 15. The docking frame 13 has multiple connecting holes 14 on both the front and back sides. The connecting hole 14 is used to fix the docking bracket 13 in the corresponding position.

[0029] Please refer to Figure 5 and Figure 6 The adjustment assembly 15 includes a fixed plate 151 and two rotating structures 152. The fixed plate 151 is installed on one side of the docking frame 13, and the two rotating structures 152 are fixed on the other side of the fixed plate 151. The rotating structure 152 includes a rotating block, a bearing, and a shaft, and is rotatably connected inside the rotating port 17.

[0030] Compared with related technologies, the high-strength heavy-duty double-ball trailer boom provided by this utility model has the following beneficial effects: To facilitate angle adjustment of the double-ball trailer boom under complex working conditions, a connecting block 18 is fixed between two steel frame structures 4 by a second reinforcing component 11 and welding. A rotating frame 16 with a rotating port 17 is installed on one side of the connecting block 18. Then, the docking frame 13 and the rotating frame 16 are connected by the adjusting component 15. Under complex working conditions, the double-ball trailer boom can adjust its angle left and right as needed. This design greatly improves the vehicle's passability under complex road conditions, reduces safety hazards such as trailer tail swing and rollover caused by connection angle issues, and reduces the frequency of component damage.

[0031] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-strength, heavy-duty double-ball trailer boom, characterized in that, include: Base; Two mating interfaces are respectively opened at the top and bottom of the base. The front and back of the base are respectively equipped with steel frame structures by two first reinforcing components. Fixing openings are opened on the opposite sides of the two steel frame structures, and fixing holes are opened between the two sets of fixing openings. A first ball-head structure is installed at the top of the base near one end, and a second ball-head structure is installed at the bottom of the base near one end. A mating block is fixedly connected to the adjacent ends of the first and second ball-head structures, and a through hole is opened on one side of each mating block. The diameter of the bottom end of the first and second ball-head structures is 44-49mm.

2. The high-strength heavy-duty double-ball trailer boom according to claim 1, characterized in that, The first ball head structure includes a chassis and a ball head. The ball head is installed at one end of the chassis, and a welding groove is formed on the outer surface of the other end of the chassis.

3. The high-strength heavy-duty double-ball trailer boom according to claim 1, characterized in that, The steel frame structure includes horizontal steel plates, vertical steel plates, and mounting holes. The vertical steel plates are fixedly connected to one end of the horizontal steel plates, and the mounting holes are opened on one side of the vertical steel plates.

4. The high-strength heavy-duty double-ball trailer boom according to claim 1, characterized in that, The first reinforcement component includes a reinforcement rod and a limiting structure. The reinforcement rod passes through a steel frame structure on one side and exits through a steel frame structure on the other side. The limiting structure is threaded onto the outer surface of the reinforcement rod.

5. The high-strength heavy-duty double-ball trailer boom according to claim 1, characterized in that, A connecting block is installed between the two steel frame structures near one end via a second reinforcing component.

6. The high-strength heavy-duty double-ball trailer boom according to claim 5, characterized in that, A rotating frame is fixedly connected to one side of the connecting block, and two rotating openings are provided on the other side of the rotating frame.

7. The high-strength heavy-duty double-ball trailer boom according to claim 6, characterized in that, The other side of the rotating frame is rotatably connected to a docking frame via an adjustment assembly. The docking frame has multiple connection holes on both its front and back sides.

8. The high-strength heavy-duty double-ball trailer boom according to claim 7, characterized in that, The adjustment assembly includes a fixed plate and two rotating structures. The fixed plate is installed on one side of the docking frame, and the two rotating structures are fixed on the other side of the fixed plate.

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