Connecting structure of crawler-type snowmobile and trailer

Abstract

The utility model provides a connecting structure of a crawler-type snowmobile and a trailer, and belongs to the technical field of crawler-type snowmobile. The problem that a buffer structure is not arranged at the joint of an existing trailer and a snowmobile is solved. The damping device comprises a guide sleeve fixedly connected to the trailer and a connecting rod arranged in the guide sleeve in a sliding mode, the guide sleeve extends in the front-back direction, the connecting rod is sleeved with a rear damping spring with the front end acting on the guide sleeve and a front damping spring with the rear end acting on the guide sleeve, and the rear end of the rear damping spring acts on the connecting rod. The front end of the front damping spring acts on the connecting rod, and the front end of the connecting rod is provided with a connecting assembly used for being movably connected with the snowmobile. And due to the arrangement of the front damping spring and the rear damping spring, the front-back movement of the guide sleeve can be buffered, so that the front-back movement of the trailer is buffered, the impact force is reduced, and the guide sleeve and the connecting rod are protected.

Description

Technical Field

[0001] This utility model belongs to the technical field of tracked snowmobiles and relates to a connection structure between a tracked snowmobile and a trailer. Background Technology

[0002] A snowmobile is a vehicle capable of gliding on snow or ice. Its design features and functions enable it to travel efficiently and stably in these special environments. Snowmobiles are widely used in ski resorts, snow rescue, transportation, and many other applications.

[0003] For example, a Chinese patent discloses a multi-functional quick-change sled [authorization announcement number CN222157573U], which includes a front structure and a traction mechanism. The traction mechanism includes a connecting assembly connected to the front structure at one end, as well as a seat and a travel assembly disposed on the connecting assembly. The connecting assembly includes a connecting rod and movable joints and mounting brackets respectively connected to both ends of the connecting rod. The movable joint includes an intermediate arm and a traction arm pivotally connected to the end of the connecting rod in sequence. The intermediate arm is located between the traction arm and the connecting rod. The end of the traction arm away from the intermediate arm is a ring-shaped end, and a traction post is sleeved inside the ring-shaped end. The traction post is connected to a reinforcing rib.

[0004] The traction mechanism (trailer) in the aforementioned sled is connected to the front structure by a connecting component, but no buffer structure is provided. When starting, the traction force applied by the sled is directly transmitted to the trailer, generating a large impact, which may damage the connecting component. When stopping, the trailer continues to move forward due to inertia, which may also cause damage to the connection. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a connection structure between a tracked snowmobile and its trailer that provides a cushioning effect.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] The connection structure between the tracked snowmobile and the trailer includes a guide sleeve fixed to the trailer and a connecting rod slidably disposed within the guide sleeve. The guide sleeve extends in a front-to-back direction. A rear shock-absorbing spring with its front end acting on the guide sleeve and a front shock-absorbing spring with its rear end acting on the guide sleeve are fitted on the connecting rod. The rear end of the rear shock-absorbing spring acts on the connecting rod, and the front end of the front shock-absorbing spring acts on the connecting rod. The front end of the connecting rod is provided with a connecting component for movable connection with the snowmobile.

[0008] The guide sleeve and connecting rod extend horizontally along the front-to-back direction of the snowmobile. When the snowmobile starts or stops, the connecting rod can slide relative to the sleeve. Because it is equipped with front and rear shock-absorbing springs, the front-to-back movement of the guide sleeve can be buffered, thereby buffering the front-to-back movement of the trailer, reducing impact force, and protecting the guide sleeve and connecting rod.

[0009] In the above-mentioned connection structure between the tracked snowmobile and the trailer, the rear end of the connecting rod is provided with a rear limiting stop, the rear end of the rear shock absorber spring abuts against the rear limiting stop, and the front end of the rear shock absorber spring abuts against the rear end of the guide sleeve.

[0010] The rear limit stop and guide sleeve axially limit the rear shock absorber spring.

[0011] In the aforementioned connection structure between the tracked snowmobile and the trailer, the rear limiting stop is a locking nut threaded onto the connecting rod. To facilitate the installation of the connecting rod, rear shock absorber spring, and front shock absorber spring, an external thread is provided on the rear end of the connecting rod, and the locking nut mates with this external thread. During installation, the front shock absorber spring is fitted onto the connecting rod, the connecting rod is inserted into the guide sleeve from front to back, the rear shock absorber spring is fitted onto the connecting rod, and finally the locking nut is threaded onto the connecting rod.

[0012] In the above-mentioned connection structure between the tracked snowmobile and the trailer, a forward-extending support frame is fixedly connected to the trailer, and the guide sleeve is fixedly connected to the support frame.

[0013] In the above-mentioned connection structure between the tracked snowmobile and the trailer, the front end of the connecting rod is provided with a front limiting stop, the front end of the front shock absorber spring abuts against the front limiting stop, and the rear end of the front shock absorber spring abuts against the front end of the guide sleeve.

[0014] The front limit stop and guide sleeve axially limit the front shock absorber spring.

[0015] In the aforementioned connection structure between the tracked snowmobile and the trailer, the guide sleeve is centrally positioned relative to the trailer. Because there is only one connecting rod, centrally positioning the guide sleeve relative to the trailer prevents the traction force on the trailer from generating a lateral component.

[0016] In the above-mentioned connection structure between the tracked snowmobile and the trailer, the connecting component includes a collar located at the front end of the connecting rod, and the collar is circular.

[0017] The snowmobile is equipped with a hook or other similar structure such as a pin. The hook or other similar structure is centered relative to the snowmobile. When connecting, the collar at the front end of the connecting rod is put onto the hook or other similar structure. The collar, once in place, extends vertically through the center line of its circle and can rotate around the hook, thus realizing the movable connection between the trailer and the snowmobile.

[0018] Compared with existing technologies, the connection structure between this tracked snowmobile and the trailer has the following advantages: due to the presence of front and rear shock-absorbing springs, the forward and backward movement of the guide sleeve can be buffered, thereby buffering the forward and backward movement of the trailer, reducing impact force, protecting the guide sleeve and connecting rod, enhancing safety, and improving riding comfort. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection structure provided by this utility model.

[0020] Figure 2 This is a schematic diagram of the connection structure provided by this utility model.

[0021] In the diagram, a) snowmobile; a1) hook; b) trailer; 1) guide sleeve; 2) connecting rod; 21) rear limit stop; 22) front limit stop; 3) rear shock absorber spring; 4) front shock absorber spring; 5) support frame; 6) collar. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figure 1 and Figure 2 The connection structure shown is for connecting the tracked snowmobile a and the trailer b. This connection structure includes a guide sleeve 1 fixed to the trailer b and a connecting rod 2 slidably disposed within the guide sleeve 1. The guide sleeve 1 and the connecting rod 2 extend horizontally along the front-rear direction of the snowmobile a. A forward-extending support frame 5 is fixedly connected to the front of the trailer b, with the support frame 5 centrally located. The guide sleeve 1 is fixed to the support frame 5 and is centered relative to the trailer b. The support frame 5 is V-shaped, clamping the guide sleeve 1 in the middle.

[0024] The front end of connecting rod 2 is provided with a connecting component for movably connecting with snowmobile a, specifically, as follows: Figure 1 and Figure 2 As shown, the connecting assembly includes a ring 6 located at the front end of the connecting rod 2. The ring 6 is circular. A hook a1 is provided on the snowmobile a, and the hook a1 is centered relative to the snowmobile a. During connection, the ring 6 at the front end of the connecting rod 2 is put onto the hook a1. The ring 6, once in place, extends vertically through the center line of its circle. The ring 6 can rotate around the hook a1, realizing the movable connection between the trailer b and the snowmobile a.

[0025] like Figure 1 and Figure 2As shown, a rear damping spring 3 with its front end acting on the guide sleeve 1 and a front damping spring 4 with its rear end acting on the guide sleeve 1 are fitted onto the connecting rod 2. The rear end of the rear damping spring 3 acts on the connecting rod 2, and the front end of the front damping spring 4 acts on the connecting rod 2.

[0026] In order to limit the position of the rear shock absorber spring 3, such as Figure 2 As shown, the rear end of the connecting rod 2 is provided with a rear limiting stop 21, the rear end of the rear damping spring 3 abuts against the rear limiting stop 21, and the front end of the rear damping spring 3 abuts against the rear end of the guide sleeve 1.

[0027] To facilitate the installation of connecting rod 2, rear shock absorber spring 3, and front shock absorber spring 4, an external thread is provided on the rear end of connecting rod 2. The rear limiting stop 21 is a locking nut threaded onto connecting rod 2, and the locking nut mates with the external thread. During installation, the front shock absorber spring 4 is fitted onto connecting rod 2, connecting rod 2 is inserted into guide sleeve 1 from front to back, the rear shock absorber spring 3 is fitted onto connecting rod 2, and finally the locking nut is threaded onto connecting rod 2.

[0028] In order to limit the movement of the front shock absorber spring 4, such as Figure 2 As shown, the front end of the connecting rod 2 is provided with a front limiting stop 22, the front end of the front damping spring 4 abuts against the front limiting stop 22, and the rear end of the front damping spring 4 abuts against the front end of the guide sleeve 1.

[0029] When the snowmobile a starts or stops, the connecting rod 2 can slide relative to the sleeve of the guide sleeve. Because it is equipped with a front shock absorber spring 4 and a rear shock absorber spring 3, it can buffer the forward and backward movement of the guide sleeve 1, thereby buffering the forward and backward movement of the trailer b, reducing the impact force, and protecting the guide sleeve 1 and the connecting rod 2.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A connection structure of a snowmobile and a drag, characterized by, The device comprises a guide sleeve (1) fixed on a towed container (b) and a connecting rod (2) slidingly arranged in the guide sleeve (1), the guide sleeve (1) extends in the front-rear direction, a rear shock spring (3) is arranged on the connecting rod (2) and acts on the guide sleeve (1) at the front end, a front shock spring (4) is arranged on the connecting rod (2) and acts on the guide sleeve (1) at the rear end, the rear end of the rear shock spring (3) acts on the connecting rod (2), the front end of the front shock spring (4) acts on the connecting rod (2), and the front end of the connecting rod (2) is provided with a connecting assembly for movably connecting with a snowmobile (a).

2. The connection structure of a snowmobile and a drag according to claim 1, characterized in that, The rear end of the connecting rod (2) is provided with a rear limiting stop (21), the rear end of the rear shock spring (3) abuts against the rear limiting stop (21), and the front end of the rear shock spring (3) abuts against the rear end of the guide sleeve (1).

3. The connection structure between the snowmobile and the drag according to claim 2, characterized in that, The rear limiting stop (21) is a locking nut threadedly connected on the connecting rod (2).

4. The connection structure between the snowmobile and the drag according to claim 1, characterized in that, The towed container (b) is provided with a support frame (5) extending forward, and the guide sleeve (1) is fixed on the support frame (5).

5. The connection structure between the snowmobile and the drag according to claim 1, characterized in that, The front end of the connecting rod (2) is provided with a front limiting stop (22), the front end of the front shock spring (4) abuts against the front limiting stop (22), and the rear end of the front shock spring (4) abuts against the front end of the guide sleeve (1).

6. The connection structure between the snowmobile and the drag according to claim 1, characterized in that, The guide sleeve (1) is centrally arranged relative to the towed container (b).

7. The connection structure between the snowmobile and the drag according to claim 1, characterized in that, The connecting assembly comprises a collar (6) arranged at the front end of the connecting rod (2), and the collar (6) is in the shape of a circular ring.

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