An off-road walking mechanism for a trailer

Abstract

The utility model discloses a kind of off-road walking mechanisms of trailer, including frame and wheel frame the wheel frame is installed in the frame bottom, the wheel frame includes fixed frame, movable frame and connecting seat, the fixed frame is fixedly installed in the frame bottom, the connecting seat is fixedly installed in the middle part of the fixed frame, the middle part of the movable frame is movably matched with the connecting seat and forms rotating fulcrum, the front and rear ends of the movable frame are rotatably installed with wheel respectively, the beneficial effects of the utility model are as follows: movable frame is rotatably installed on connecting seat, so that movable frame can rotate around rotating center after front wheel meets obstacle, so that front wheel is raised upwards, and movable frame resets under the action of gravity after front wheel overcomes obstacle, and rear wheel contacts with obstacle, so that rear wheel is raised upwards, and movable frame resets under the action of gravity after rear wheel overcomes obstacle, so as to improve the off-road walking ability of trailer.

Description

Technical Field

[0001] This utility model relates to the field of trailer chassis technology, and in particular to an off-road walking mechanism for a trailer. Background Technology

[0002] Trailers are a type of transportation tool that is widely used in forestry, agriculture, and logistics.

[0003] A search revealed a Chinese invention patent (application publication number: CN119037360A) that discloses a timber trailer and its braking control method, including a traveling wheel mechanism. The traveling wheel mechanism comprises a mounting frame, mounting axles, and tires. The mounting frame is rotatably mounted on a connecting beam. Two mounting axles are telescopically mounted on either side of the mounting axles, with the sliding direction of the mounting axles perpendicular to the traveling direction of the timber trailer. The number of tires corresponds one-to-one with the number of mounting axles and is rotatably mounted on the mounting axles.

[0004] It can be seen that the existing technology lacks off-road capability. When encountering mountainous or uneven terrain, the trailer will experience a bumpy ride, which will cause the cargo inside the trailer to vibrate, and may even cause the cargo to fall out of the trailer. Therefore, this shortcoming urgently needs to be improved. Utility Model Content

[0005] The purpose of this invention is to address the above problems by providing a trailer off-road walking mechanism that has the advantages of obstacle crossing and off-road capability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an off-road walking mechanism for a trailer, comprising a frame and a wheel frame, wherein the wheel frame is installed at the bottom of the frame, and the wheel frame includes a fixed frame, a movable frame and a connecting seat. The fixed frame is fixedly installed at the bottom of the frame, and the connecting seat is fixedly installed in the middle of the fixed frame. The middle of the movable frame is movably engaged with the connecting seat to form a rotation fulcrum, and wheels are rotatably installed at both the front and rear ends of the movable frame.

[0007] Preferably, the connecting seat has a connecting hole, a connecting shaft is installed in the connecting hole, and a sleeve is provided in the middle of the movable frame. The sleeve is sleeved on the outer periphery of the connecting shaft, and the sleeve is rotatably engaged with the connecting shaft.

[0008] Preferably, the movable frame further includes a front connecting frame and a rear connecting frame, the ends of the front connecting frame and the rear connecting frame that are close to each other are fixedly connected to the sleeve, and the lower surfaces of the front connecting frame and the rear connecting frame are set at an angle, and the wheels are rotatably mounted on the ends of the front connecting frame and the rear connecting frame that are far from each other.

[0009] Preferably, a reinforcing plate is fixedly installed on the outer periphery of the sleeve. The reinforcing plate has a first supporting surface and a second supporting surface, and the first supporting surface and the second supporting surface respectively abut against the lower surface of the front connecting frame and the lower surface of the rear connecting frame.

[0010] Preferably, the fixing frame includes a front fixing post and a rear fixing post. The ends of the front fixing post and the rear fixing post that are close to each other are fixedly connected to the connecting seat, and the ends of the front fixing post and the rear fixing post that are far from each other are fixedly connected to the bottom of the vehicle frame. The front fixing post and the rear fixing post form a triangle after being connected to the vehicle frame.

[0011] Preferably, the wheel is an off-road tire.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The present invention provides an off-road walking mechanism for a trailer. The movable frame is rotatably mounted on the connecting seat. Therefore, when the front wheel encounters an obstacle, the movable frame can rotate around the rotation center, thereby causing the front wheel to tilt upward. After the front wheel passes the obstacle, the movable frame returns to its original position under the action of gravity. When the rear wheel comes into contact with an obstacle, it lifts up, and the movable frame returns to its original position under gravity after the rear wheel clears the obstacle, thus improving the trailer's off-road capability. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a first-view perspective three-dimensional structural diagram of the wheel frame of this utility model; Figure 4 This is a two-dimensional structural diagram of the wheel frame of this utility model from a second perspective; Figure 5 This is a three-dimensional structural diagram of the connecting seat, sleeve, and connecting shaft of this utility model; Figure 6 This is a cross-sectional structural diagram of the connecting seat, sleeve, and connecting shaft of this utility model; Figure 7 This is a three-dimensional structural diagram of the reinforcing plate of this utility model.

[0014] Figure descriptions: 1. Frame; 2. Wheel frame; 21. Fixed frame; 211. Front fixed post; 212. Rear fixed post; 22. Movable frame; 221. Front connecting frame; 222. Rear connecting frame; 23. Connecting seat; 231. Connecting plate; 24. Connecting shaft; 25. Sleeve; 26. Reinforcing plate; 261. First support surface; 262. Second support surface; 3. Wheel. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1-7 As shown, an off-road walking mechanism for a trailer includes a frame 1 and wheel frames 2 mounted on the bottom of the frame 1. In this application, at least two wheel frames 2 are mounted on the bottom of the frame 1, and the wheel frames 2 are respectively mounted on the left and right ends of the bottom of the frame 1. Each wheel frame 2 includes a fixed frame 21, a movable frame 22, and a connecting seat 23. The fixed frame 21 is fixedly mounted on the bottom of the frame 1, and the connecting seat 23 is fixedly mounted on the middle of the fixed frame 21. The middle of the movable frame 22 is movably engaged with the connecting seat 23 to form a rotation fulcrum. Wheels 3 are rotatably mounted on both the front and rear ends of the movable frame 22. When the front wheel encounters an obstacle, the movable frame 22 can rotate around the rotation fulcrum as the rotation center, thereby causing the front wheel to tilt upward. After the front wheel overcomes the obstacle, the movable frame 22 returns to its original position under the action of gravity. When the rear wheel comes into contact with an obstacle, it lifts up, and the movable frame 22 returns to its original position under the action of gravity after the rear wheel clears the obstacle, thereby improving the trailer's off-road capability.

[0017] The connecting seat 23 includes two connecting plates 231, which are fixedly connected to the left and right ends of the fixed frame 21. Each connecting plate 231 has a corresponding connecting hole, and a connecting shaft 24 is installed in the connecting hole. The connecting shaft 24 is the upper rotation fulcrum. A sleeve 25 is provided in the middle of the movable frame 22. The sleeve 25 is sleeved on the outer periphery of the connecting shaft 24. The sleeve 25 and the connecting shaft 24 are rotatably engaged. In this application, the connecting shaft 24 is a rivet, and the connecting shaft 24 is riveted into the connecting hole.

[0018] The movable frame 22 is movably installed between the two connecting plates 231, and the movable frame 22 also includes a front connecting frame 221 and a rear connecting frame 222. The ends of the front connecting frame 221 and the rear connecting frame 222 that are close to each other are fixedly connected to the sleeve 25, and the lower surfaces of the front connecting frame 221 and the rear connecting frame 222 are set at an angle. In this application, the angle is an obtuse angle, which can improve the stability during off-road driving. The wheels 3 are rotatably installed at the ends of the front connecting frame 221 and the rear connecting frame 222 that are far from each other.

[0019] A reinforcing plate 26 is fixedly installed on the outer periphery of the sleeve 25. The reinforcing plate 26 has a first supporting surface 261 and a second supporting surface 262. The first supporting surface 261 and the second supporting surface 262 respectively abut against the lower surface of the front connecting frame 221 and the lower surface of the rear connecting frame 222. The reinforcing plate 26 is fixedly connected to the lower surface of the front connecting frame 221 and the lower surface of the rear connecting frame 222 by welding. In further optimization, there are two reinforcing plates 26 in this application, which can further improve the connection strength between the front connecting frame 221, the rear connecting frame 222 and the sleeve 25.

[0020] The mounting bracket 21 includes a front mounting post 211 and a rear mounting post 212. The ends of the front mounting post 211 and the rear mounting post 212 that are close to each other are fixedly connected to the connecting seat 23, and the ends of the front mounting post 211 and the rear mounting post 212 that are far from each other are fixedly connected to the bottom of the vehicle frame 1. The front mounting post 211 and the rear mounting post 212 form a triangle after being connected to the vehicle frame 1, thereby improving the stability of the trailer.

[0021] The wheel 3 is an off-road tire, thereby improving the trailer's off-road capability.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An off-road walking mechanism for a trailer, comprising a frame (1) and wheel frames (2), wherein the wheel frames (2) are mounted on the bottom of the frame (1), characterized in that: The wheel frame (2) includes a fixed frame (21), a movable frame (22), and a connecting seat (23). The fixed frame (21) is fixedly installed at the bottom of the frame (1). The connecting seat (23) is fixedly installed in the middle of the fixed frame (21). The middle of the movable frame (22) is movably engaged with the connecting seat (23) to form a rotation fulcrum. Wheels (3) are rotatably installed at both the front and rear ends of the movable frame (22).

2. The off-road walking mechanism for a trailer according to claim 1, characterized in that: The connecting seat (23) has a connecting hole, and a connecting shaft (24) is installed in the connecting hole. A sleeve (25) is provided in the middle of the movable frame (22). The sleeve (25) is sleeved on the outer periphery of the connecting shaft (24), and the sleeve (25) and the connecting shaft (24) are rotatably engaged.

3. The off-road walking mechanism for a trailer according to claim 2, characterized in that: The movable frame (22) also includes a front connecting frame (221) and a rear connecting frame (222). The ends of the front connecting frame (221) and the rear connecting frame (222) that are close to each other are fixedly connected to the sleeve (25). The lower surfaces of the front connecting frame (221) and the rear connecting frame (222) are set at an angle. The ends of the front connecting frame (221) and the rear connecting frame (222) that are far apart from each other are respectively rotatably mounted with the wheels (3).

4. The off-road walking mechanism for a trailer according to claim 3, characterized in that: A reinforcing plate (26) is fixedly installed on the outer periphery of the sleeve (25). The reinforcing plate (26) has a first supporting surface (261) and a second supporting surface (262). The first supporting surface (261) and the second supporting surface (262) respectively abut against the lower surface of the front connecting frame (221) and the lower surface of the rear connecting frame (222).

5. The off-road walking mechanism for a trailer according to claim 1, characterized in that: The fixing frame (21) includes a front fixing post (211) and a rear fixing post (212). The ends of the front fixing post (211) and the rear fixing post (212) that are close to each other are fixedly connected to the connecting seat (23). The ends of the front fixing post (211) and the rear fixing post (212) that are far from each other are fixedly connected to the bottom of the frame (1). The front fixing post (211) and the rear fixing post (212) form a triangle after being connected to the frame (1).

6. The off-road walking mechanism for a trailer according to claim 1, characterized in that: The wheel (3) is an off-road tire.

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