Cylindrical trailer arm

Abstract

The utility model discloses a cylindrical trailer arm, and belongs to the field of vehicle auxiliary equipment. The cylindrical trailer arm comprises a receiver supporting arm, an adjusting assembly, a support and a traction column, one end of the receiver supporting arm is connected with a trailer, the other end of the receiver supporting arm is connected with the adjusting assembly, and the adjusting assembly is connected with the support, bears the traction column and is connected with the receiver supporting arm through the adjusting assembly. The adjusting assembly is used for movably connecting the bracket and the receiver support arm; the adjusting assembly can rotate around the adjusting rod and support the traction column to be folded inwards, and therefore the trailer arm is compact in structure and convenient to store. Meanwhile, through the design that the support can slide along the adjusting rod, the height adjusting function is matched, and different operation requirements are met.

Description

Technical Field

[0001] The utility model relates to a trailer arm, in particular to a cylindrical trailer arm, belonging to the field of vehicle auxiliary equipment. Background Art

[0002] Existing trailer arms primarily utilize a fixed structure, connected to the towing equipment via bolts and pins. This design is commonly found in construction machinery, transport vehicles, and military equipment. While this type of trailer arm has a simple structure and can meet the needs of conventional towing operations, it has significant functional limitations, making it difficult to adapt to complex operating scenarios and the ever-changing demands of flexible use.

[0003] Traditional trailer arms are typically fixed in height, unable to accommodate height differences between different towing equipment or towed objects, resulting in difficult or unstable connections. Furthermore, fixed-length trailer arms cannot be folded or compressed, taking up a lot of storage space and making them inconvenient to carry and transport.

[0004] In view of the above situation, in order to overcome the above technical problems, the utility model designs a cylindrical trailer arm to solve the above technical problems. Summary of the Invention

[0005] The technical purpose to be achieved by the present utility model is: by setting a cylindrical adjustment connecting column, the traction end is movably connected to the trailer arm, and the whole is connected and installed by a pin shaft, thereby achieving the effect of height adjustment and rapid storage, and solving the technical problems of the existing trailer arm with single applicability and complex structure.

[0006] In order to achieve the above technical objectives, the present invention provides the following technical solutions:

[0007] The cylindrical trailer arm provided by the utility model comprises a receiver arm, an adjustment component, a bracket and a traction column. One end of the receiver arm is connected to the trailer and the other end is connected to the adjustment component. The adjustment component is connected to the bracket, which carries the traction column and is connected to the receiver arm through the adjustment component.

[0008] The adjustment assembly flexibly connects the bracket and the receiver arm. The adjustment assembly rotates horizontally about the adjustment rod and is positioned via a pin. It also supports the inward folding of the towing column, thereby achieving a compact and easily stowable trailer arm. Furthermore, the bracket slides axially along the adjustment rod, enabling height adjustment to accommodate varying operational needs. Furthermore, the entire assembly utilizes a pin connection, facilitating assembly and disassembly, improving operational efficiency.

[0009] The adjustment assembly includes an adjustment rod, an arm pin hole, a trailer lock, an adjustment pin hole, an adjustment pin shaft and a matching pin hole. The adjustment rod is cylindrical and is connected to the receiver arm through the arm pin hole opened on it. The cylindrical structure facilitates the rotation of the bracket around the axis and supports axial sliding to adapt to different height requirements.

[0010] The trailer lock passes through the arm pin hole and is locked by a key; the locking design ensures a secure connection and anti-theft, thereby improving safety.

[0011] The adjusting rod is also provided with a plurality of adjusting pin holes, and the bracket is provided with a matching pin hole. The adjusting pin shaft passes through the matching pin hole and the adjusting pin hole, thereby connecting the bracket and the adjusting rod to each other.

[0012] The number of the matching pin holes is at least two, and the number of the adjusting pin holes is at least three.

[0013] A limit retaining ring is installed at the lower end of the adjusting rod, and the limit retaining ring is used to limit the bracket from sliding down and falling off the adjusting rod; further, the limit retaining ring can prevent the bracket from sliding out accidentally to avoid injuring staff.

[0014] A locking pin is inserted at the front end of the adjusting pin shaft; the locking pin is used to further lock the pin shaft to prevent it from loosening, thereby improving safety during the traction process.

[0015] There are two towing posts, each symmetrically mounted on the bracket via bracket pins. This symmetrical structure effectively distributes stress during towing, reducing the risk of component wear or deformation caused by excessive stress at a single point. The dual towing posts also provide greater lateral support, ensuring the trailer remains stable during towing.

[0016] One end of the bracket is provided with an opening for installing the adjusting rod, the connecting pin is inserted into the inner side of the opening of the bracket and locks the traction column, and then the connecting pin is limited by inserting the adjusting rod.

[0017] The beneficial effects of the utility model are as follows:

[0018] 1. The utility model connects various components through a pin shaft, and connects the bracket and the receiver arm through a cylindrical adjustment rod, so that the bracket can rotate and slide axially on the adjustment rod, so that the towing column on the bracket can adapt to trailers of different heights and can also rotate inward for storage, greatly improving the applicability and convenience of the trailer arm.

[0019] 2. The utility model provides a limit retaining ring under the adjusting rod. When the operator adjusts the position of the bracket on the adjusting rod, since the bracket has a certain weight and can slide on the adjusting rod, in order to prevent the bracket from sliding out of the adjusting rod and hitting the operator, the limit retaining ring is used to limit the sliding of the bracket, thereby improving the safety of the trailer arm during adjustment.

[0020] 3. The utility model locks the receiver arm through multiple trailer locks. At the same time, under the restriction of the limit ring, it prevents someone from easily stealing the bracket by removing the R-shaped pin. In addition, through the hidden connecting pin assembly, the connecting pin is inserted into one end of the bracket installation adjustment rod, and the adjustment rod is used to hide and limit it, thereby realizing the overall anti-theft of the bracket and the connecting column. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This utility model Figure 1 Exploded diagram;

[0025] Figure 3 It is a schematic diagram of the installation process of each component of the utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the trailer arm and the trailer of the utility model;

[0027] Figure 5 It is a schematic diagram of the trailer arm height adjustment of the utility model;

[0028] Figure 6 It is a schematic diagram of the rotary storage of the utility model.

[0029] In the figure: 1. Receiver arm; 2. Adjustment assembly; 21. Adjustment rod; 211. Limit ring; 22. Arm pin hole; 23. Trailer lock; 24. Adjustment pin hole; 25. Adjustment pin shaft; 251. Locking pin; 26. Matching pin hole; 3. Bracket; 31. Connecting pin shaft; 4. Towing column. DETAILED DESCRIPTION

[0030] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] like Figure 1-6 As shown, the cylindrical trailer arm provided by the present invention includes a receiver arm 1, an adjustment component 2, a bracket 3 and a towing post 4. One end of the receiver arm 1 is connected to the trailer and the other end is connected to the adjustment component 2. The adjustment component 2 is connected to the bracket 3, and the bracket 3 is connected to the towing post 4.

[0032] The adjustment assembly 2 is used to flexibly connect the bracket 3 and the receiver arm 1 .

[0033] The bracket 3 can be rotated horizontally around the adjusting rod 21 and positioned; the bracket 3 can also be axially slid along the adjusting rod 21 and positioned.

[0034] like Figure 2 As shown, the adjustment assembly 2 includes an adjustment rod 21, an arm pin hole 22, a trailer lock 23, an adjustment pin hole 24, an adjustment pin shaft 25 and a matching pin hole 26. The adjustment rod 21 is cylindrical and is connected to the receiver arm 1 through the arm pin hole 22 provided thereon. The trailer lock 23 passes through the arm pin hole 22 and is locked by a key.

[0035] The adjusting rod 21 is further provided with a plurality of adjusting pin holes 24 , and the bracket 3 is provided with a matching pin hole 26 . The adjusting pin shaft 25 passes through the matching pin hole 26 and the adjusting pin hole 24 , thereby connecting the bracket 3 and the adjusting rod 21 to each other.

[0036] like Figure 2 As shown, in this embodiment, the number of the matching pin holes 26 is two, and the number of the adjustment pin holes 24 is five.

[0037] In this embodiment, a limit retaining ring 211 is installed at the lower end of the adjusting rod 21 , and the limit retaining ring 211 is used to limit the bracket 3 from sliding down and falling off the adjusting rod 21 .

[0038] In this embodiment, a locking pin 251 is inserted into the front end of the adjusting pin shaft 25 .

[0039] In this embodiment, there are two traction columns 4 , which are symmetrically mounted on the bracket 3 via connecting pins 31 .

[0040] like Figure 3 As shown, when installing the present invention, first install the two traction columns 4 into the cylindrical holes at one end of the bracket 3, align the pin holes on the traction columns 4 and the bracket 3 with each other, and then insert the connecting pin shaft 31 into the pin hole to complete the installation of the traction columns 4.

[0041] Next, vertically insert the adjusting rod 21 into the cylindrical hole at the other end of the bracket 3, and align the adjusting pin hole 24 on the adjusting rod 21 with the matching pin hole 26 on the bracket 3. Then adjust the appropriate height and align the pin holes of the corresponding height. Pass the adjusting pin shaft 25 through the adjusting pin hole 24 and the matching pin hole 26, and insert the locking pin 251 at the end of the adjusting pin shaft 25 to complete the installation of the adjusting rod 21.

[0042] The receiver arm 1 is further installed by placing one end of the receiver arm 1 on the upper end of the adjustment rod 21, aligning the pin hole on the receiver arm 1 with the arm pin hole 22 on the adjustment rod 21, and inserting the trailer lock 23 through the pin hole and locking it, thereby completing the installation of the receiver arm 1.

[0043] Finally, if Figure 4 As shown, the other end of the receiver arm 1 is inserted into the connecting arm of the trailer, and then inserted into the trailer lock 23 to complete the connection between the trailer arm and the trailer.

[0044] like Figure 5 As shown, the present invention unlocks the sliding of the bracket 3 on the adjustment rod 21 by pulling out the adjustment pin 25. The staff can adjust the height of the bracket 3 by sliding the bracket 3 up and down, and then lock it again by adjusting the pin 25.

[0045] like Figure 6 As shown, after pulling out the adjustment pin 25, the staff can rotate the bracket 3 toward the inside of the adjustment rod 21 to rotate the bracket 3 180 degrees, and then insert the adjustment pin 25 to complete the locking when the trailer arm is stored.

[0046] Although one or more exemplary embodiments of the present disclosure have been described with reference to the drawings, persons skilled in the art will understand that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the following claims.

[0047] The foregoing description is merely a glimpse into the modifications that may be made to the present invention in light of the above detailed description. The terms used in the appended claims should not be construed to limit the present invention to the specific embodiments disclosed in the specification. Instead, the scope of the present invention is to be determined entirely by the appended claims, which are to be construed in accordance with established doctrines of claim interpretation.

Claims

1. A cylindrical trailer arm, characterized in that: It comprises a receiver arm (1), an adjustment assembly (2), a bracket (3) and a traction column (4), wherein one end of the receiver arm (1) is used for connecting to a trailer and the other end is connected to the adjustment assembly (2), and the traction column (4) is connected to the bracket (3); The adjustment assembly (2) is used to movably connect the bracket (3) and the receiver arm (1); The bracket (3) can be horizontally rotated and positioned around the adjustment component (2), and can also be axially slid and positioned along the adjustment component (2); The adjustment assembly (2) includes an adjustment rod (21), an arm pin hole (22), a trailer lock (23), an adjustment pin hole (24), an adjustment pin shaft (25) and a matching pin hole (26), wherein the adjustment rod (21) is cylindrical and is connected to the receiver arm (1) through the arm pin hole (22) provided thereon, and the trailer lock (23) passes through the arm pin hole (22) and can be locked; The adjusting rod (21) is further provided with a plurality of adjusting pin holes (24), the bracket (3) is provided with a matching pin hole (26), and the adjusting pin shaft (25) passes through the matching pin hole (26) and the adjusting pin hole (24), thereby connecting the bracket (3) and the adjusting rod (21) to each other.

2. The cylindrical trailer arm according to claim 1, characterized in that: The number of the matching pin holes (26) is at least two, and the number of the adjusting pin holes (24) is at least three.

3. The cylindrical trailer arm according to claim 1, characterized in that: A limit retaining ring (211) is installed at the lower end of the adjusting rod (21), and the limit retaining ring (211) is used to limit the bracket (3) from sliding down and falling off the adjusting rod (21); The traction column (4) and the bracket (3) are locked under the restriction of the trailer lock (23) and the limit ring (211).

4. The cylindrical trailer arm according to claim 1, characterized in that: A locking pin (251) is inserted into the front end of the adjusting pin shaft (25).

5. The cylindrical trailer arm according to claim 1, characterized in that: There are two traction columns (4), which are symmetrically mounted on the bracket (3) via connecting pins (31).

6. The cylindrical trailer arm according to claim 5, characterized in that: The connecting pin (31) is inserted from the side of the bracket (3) and is limited by the adjustment component (2).

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