一种挂车拖钩缓冲减震装置

Abstract

本实用新型公开了一种挂车拖钩缓冲减震装置，包括装置本体，装置本体包括螺栓底座、主缓冲臂、缓冲装置和拖车臂，螺栓底座与主缓冲臂为平滑过渡且一体加工成型结构，螺栓底座位于主缓冲臂顶部，主缓冲臂内部与底部为贯通式结构，缓冲装置安装在主缓冲臂内部顶端，拖车臂套接在主缓冲臂底部且顶部位于主缓冲臂内；缓冲装置包括减震座、减震弹簧、大导向限位筒、缓冲导向柱和缓冲块，大导向限位筒焊机在减震座底部，减震弹簧通过螺丝固定在减震座上且位于大导向限位筒外侧。该种装置可以通过多级缓冲设计缓解急刹冲击力，一体成型及加强结构提升稳定性，解决现有拖车钩易损、稳定性差的问题，更便于用户使用。

Claims

1. A trailer tow hitch shock absorber apparatus, characterized by: The device includes a main body (1), which includes a bolt base (2), a main buffer arm (3), a buffer device (4), and a trailer arm (5). The bolt base (2) and the main buffer arm (3) are smoothly connected and integrally formed. The bolt base (2) is located at the top of the main buffer arm (3). The inside and bottom of the main buffer arm (3) are connected in a through structure. The buffer device (4) is installed at the top inside the main buffer arm (3). The trailer arm (5) is sleeved at the bottom of the main buffer arm (3) and its top is located inside the main buffer arm (3). The buffer device (4) includes a shock absorber seat (6), a shock absorber spring (7), a large guide limiting cylinder (8), a buffer guide post (9), and a buffer block (10). The large guide limiting cylinder (8) is welded to the bottom of the shock absorber seat (6). The shock absorber spring (7) is fixed to the shock absorber seat (6) by screws and is located outside the large guide limiting cylinder (8). One end of the buffer guide post (9) is sleeved inside the large guide limiting cylinder (8). The buffer block (10) is welded to the bottom of the buffer guide post (9). The bottom of the buffer block (10) is provided with an insertion port (11). The insertion port (11) has a cylindrical structure. A large buffer pad (12) is pasted on the bottom of the buffer block (10). A small buffer pad (13) is pasted inside the insertion port (11).

2. A trailer tow hitch shock absorber device as claimed in claim 1 wherein: The trailer boom (5) includes a main boom body (14), a trailer hook (15), and a trailer outer block (16). The main boom body (14), the trailer hook (15), and the trailer outer block (16) are all smoothly transitioned and integrally formed structures. The trailer hook (15) has a circular structure and is located at the bottom of the main boom body (14). The trailer outer block (16) is located at the upper outer end of the main boom body (14).

3. A trailer tow hitch shock absorber device as claimed in claim 2, wherein: The main arm body (14) is provided with a guide column (17) at the top. The guide column (17) has a cylindrical structure and a small buffer pad (13) is also provided at the top of the guide column (17).

4. A trailer tow hitch shock absorber device as claimed in claim 2, wherein: The trailer hook ring (15) has a connecting ring (18) in the middle, and a ring groove (19) is provided at the bottom of the connecting ring (18). The ring groove (19) has a rectangular structure. The surface of the trailer hook ring (15) has a number of reinforcing structure holes (20). The reinforcing structure holes (20) have a number of secondary reinforcing grooves (21) distributed in a ring-shaped equidistant manner inside the reinforcing structure holes (20). The secondary reinforcing grooves (21) have a rectangular structure.

5. A trailer tow hitch shock absorber device as claimed in claim 2, characterised in that: Both the large buffer pad (12) and the small buffer pad (13) include a bottom pad (22), a middle pad (23) and an upper pad (24). The bottom pad (22), the middle pad (23) and the upper pad (24) are all smoothly transitioned and integrally formed structures. The middle pad (23) is located on top of the bottom pad (22), and the upper pad (24) is located on top of the middle pad (23). The middle pad (23) has an X-shaped structure.

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