Snowmobile anti-slip belt tensioning mechanism

Abstract

This utility model discloses a snowmobile anti-derailment track tensioning mechanism, including a snowmobile frame and a track mounted on the frame. The frame also includes a tensioning mechanism comprising an abutment wheel assembly mounted at the rear end of the frame. A movable groove is provided on the frame. A screw sleeve is provided on each of the left and right sides of the frame, and a screw rod is screwed into each screw sleeve. The abutment wheel assembly includes a connecting shaft with a wheel body that abuts against the track. A connecting seat is provided at each of the left and right ends of the connecting shaft, a first locking seat is provided on each connecting seat. An installation groove is provided on the frame for the first locking seat to pass through. A pressure seat is provided on the frame outside each connecting seat, and a second locking seat is provided on each pressure seat. The pressure seat and the connecting seat are connected by bolts. The advantage is that this design facilitates the disassembly and assembly of the abutment wheel assembly, thereby facilitating the disassembly and assembly of the track tensioning mechanism.

Description

Technical Field

[0001] This utility model relates to a tensioning mechanism, and more particularly to a snowmobile anti-derailment track tensioning mechanism. Background Technology

[0002] Snowmobiles are special vehicles widely used for snow exploration, transportation, and rescue. They are driven by tracks to provide buoyancy and traction. The tracks are typically supported by drive wheels, driven wheels, guide wheels, and tension wheels, and are kept at a certain tension to ensure transmission efficiency. In order to improve the reliability of the tracks during operation, a tensioning mechanism is usually installed in the snowmobile frame to adjust the track tension.

[0003] Because of the limited space in the frame, the installation process for the tensioning mechanism is quite complicated. This not only reduces the production efficiency of snowmobiles but also increases the difficulty of maintaining the tensioning mechanism. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a snowmobile anti-derailment track tensioning mechanism that is easy to disassemble and assemble.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: a snowmobile anti-derailment track tensioning mechanism, including a snowmobile frame and a track mounted on the frame. The frame also includes a tensioning mechanism for adjusting the track tension. The tensioning mechanism includes an abutment wheel assembly mounted at the rear end of the frame. The frame has a moving groove for the abutment wheel assembly to move. A screw sleeve is provided on each of the left and right sides of the frame, and a screw rod with one end abutting against the abutment wheel assembly is screwed into each screw sleeve. The abutment wheel assembly includes a connecting shaft mounted in the frame, and two wheels rotatably mounted on the connecting shaft that abut against the track. Two connecting seats are also provided. The screw rods are installed at the left and right ends of the connecting shaft, respectively. The screw rods abut against the connecting seats. Each connecting seat has a first retaining seat at the end away from the connecting shaft that engages with the moving slot. Each moving slot has an installation slot on the frame at the top for the first retaining seat to pass through. Each connecting seat has a first screw hole on the end face near the frame. There are two pressure seats, which are installed on the frame outside the connecting seat. The pressure seats and the connecting seats are coaxial. Each pressure seat has a second retaining seat on the side wall near the frame that engages with the moving slot. Each pressure seat has a through hole aligned with the first screw hole. Each through hole has a bolt, which passes through the through hole and is screwed into the first screw hole.

[0006] A further preferred embodiment of this utility model is as follows: each of the screw sleeves is provided with a connecting plate connected to the frame on the side near the frame, the connecting plate is detachably connected to the frame by screws, and the screw sleeve is fixedly connected to the connecting plate.

[0007] A further preferred embodiment of this utility model is as follows: a locking nut is screwed onto each screw, and a hexagonal adjusting block is provided at the end of the screw away from the connecting seat. The locking nut is located on the side of the screw away from the connecting seat.

[0008] A further preferred embodiment of this utility model is as follows: the first card holder has a plurality of limiting holes evenly formed on the side wall near the second card holder, and the second card holder has a plurality of plug rods that are inserted into the limiting holes on the side wall near the first card holder.

[0009] A further preferred embodiment of this utility model is that the connecting seat has a limiting groove on the side wall near the screw end for limiting the screw position.

[0010] A further preferred embodiment of this utility model is that an elastic washer is provided between the pressure seat and the bolt.

[0011] A further preferred embodiment of this utility model is as follows: the connecting shaft is hollow, and a second screw hole is provided at each of the left and right ends of the connecting shaft. The connecting seat is provided with a threaded tube that is screwed into the second screw hole on the side near the connecting shaft.

[0012] A further preferred embodiment of this utility model is as follows: a bearing is provided at each of the left and right ends of the connecting shaft, the inner ring of the bearing is fixedly connected to the connecting shaft, and the outer ring of the bearing is fixedly connected to the wheel body.

[0013] Compared with the prior art, the advantages of this utility model are that it facilitates the disassembly and assembly of the abutment wheel assembly, thereby facilitating the disassembly and assembly of the track tensioning mechanism. This not only improves the production efficiency of snowmobiles but also reduces the maintenance difficulty of the tensioning mechanism. Attached Figure Description

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0015] Figure 1 This is a front view of the present invention; Figure 2This is a three-dimensional structural schematic diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the abutment wheel assembly installed on the vehicle frame in this utility model; Figure 4 This is an enlarged 3D view of the abutment wheel assembly installed on the vehicle frame in this utility model; Figure 5 This is an exploded view of the abutment wheel assembly and the vehicle frame in this utility model; Figure 6 This is a three-dimensional structural diagram of the wheel body connected to the connecting shaft and connecting seat in this utility model; Figure 7 This is a schematic diagram of the structure of the wheel body connected together with the connecting shaft and the connecting seat in this utility model; Figure 8 for Figure 7 Enlarged view of part A in the middle.

[0016] In the diagram: 1. Frame; 2. Track; 3. Abutment wheel assembly; 31. Wheel body; 32. Pressure seat; 321. Second mounting seat; 322. Insert rod; 323. Elastic washer; 324. Bolt; 325. Through hole; 33. Connecting seat; 331. First mounting seat; 332. First screw hole; 333. Limiting hole; 334. Limiting groove; 34. Connecting shaft; 35. Bearing; 36. Second screw hole; 37. Threaded pipe; 4. Moving groove; 41. Mounting groove; 5. Screw; 6. Screw sleeve; 7. Locking nut; 8. Adjusting block. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0018] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0019] This embodiment mainly describes the structure of a snowmobile anti-slip track tensioning mechanism, as detailed below: like Figures 1-8As shown, a snowmobile anti-slip track tensioning mechanism includes a snowmobile frame 1 and a track 2 mounted on the frame 1. The frame 1 also includes a tensioning mechanism for adjusting the tension of the track 2. The tensioning mechanism includes an abutment wheel assembly 3 mounted at the rear end of the frame 1. A moving groove 4 is provided on the frame 1 for the abutment wheel assembly 3 to move. A screw sleeve 6 is provided on each of the left and right sides of the frame 1, and a rod with one end connected to the abutment wheel assembly 3 is screwed into each screw sleeve 6. When adjusting the tension of the track 2 by using the abutting screw 5, first loosen the abutting wheel assembly 3, and then the operator can turn the screw 5. For example, when the operator unscrews the screw 5 from the screw sleeve 6, the screw 5 can push the abutting wheel assembly 3 to move backward in the moving groove 4, which can increase the tension of the track 2. When the operator screws the screw 5 back into the screw sleeve 6, the track 2 can push the abutting wheel assembly 3 to move forward in the moving groove 4, which can decrease the tension of the track 2. The abutment wheel assembly 3 includes a connecting shaft 34 installed in the frame 1, and two wheels 31 rotatably mounted on the connecting shaft 34 to abut against the track 2. A connecting seat 33 is provided at each of the left and right ends of the connecting shaft 34, and the screw 5 abuts against the connecting seat 33. A first locking seat 331 is provided at the end of the connecting seat 33 away from the connecting shaft 34 to engage with the moving groove 4. An installation groove 41 is opened on the frame 1 at the top of the moving groove 4 to allow the first locking seat 331 to pass through. In this way, when installing the connecting shaft 34, the wheels 31 and the connecting seat 33 into the frame 1, the first locking seat 331 is first inserted into the installation groove 41, and then the operator controls the first locking seat 331 to move along the installation groove 41 toward the moving groove 4 until the first locking seat 331 enters the moving groove 4. This makes it convenient to install the connecting shaft 34, the wheels 31 and the connecting seat 33 into the frame 1. Then, a first screw hole 332 is provided on the end face of the connecting seat 33 near the frame 1. A pressure seat 32 is provided on the frame 1 outside the two connecting seats 33. The pressure seat 32 and the connecting seat 33 are coaxial. A second locking seat 321 is provided on the side wall of the pressure seat 32 near the frame 1 to engage with the moving groove 4. At the same time, a through hole 325 is provided on the pressure seat 32, which is aligned with the first screw hole 332. A bolt 324 is provided in the through hole 325. The bottom of the bolt 324 can pass through the through hole 325 and be screwed into the first screw hole 332. So when the abutment wheel assembly 3 is loosened, only the bolt 324 needs to be loosened and removed, and then the pressure seat 32 can be removed from the frame 1. Therefore, when installing the abutment wheel assembly 3 into the frame 1, firstly, the connecting shaft 34, along with the connecting seat 33 and the wheel body 31, is installed into the frame 1, and the first locking seat 331 on the connecting seat 33 is engaged with the moving groove 4 on the frame 1. The first locking seat 331 can move in the moving groove 4. Then, the pressure seat 32 is installed on the frame 1, and the second locking seat 321 on the pressure seat 32 is engaged into the moving groove 4. At the same time, the through hole 325 on the pressure seat 32 is aligned with the first screw hole 332 on the connecting seat 33. Then, the bolt 324 is inserted into the through hole 325 and screwed into the first screw hole 332 until the bolt 324 is tightened. In this way, the pressure seat 32 and the connecting seat 33 can clamp the frame 1, thus completing the installation of the abutment wheel assembly 3. When the wheel assembly 3 is removed from the frame 1, the bolt 324 is first removed from the pressure seat 32, and the pressure seat 32 is removed from the frame 1. Then, the connecting shaft 34, together with the connecting seat 33 and the wheel body 31, is moved in the frame 1 until the first locking seat 331 moves to the bottom of the mounting groove 41 in the moving groove 4. Then, the operator controls the connecting shaft 34, together with the connecting seat 33 and the wheel body 31, to move the first locking seat 331 out of the mounting groove 41 until the first locking seat 331 is disengaged from the mounting groove 41. This completes the disassembly of the abutment wheel assembly 3, which facilitates the disassembly and assembly of the abutment wheel assembly 3, and in turn facilitates the disassembly and assembly of the track 2 tensioning mechanism. This not only improves the production efficiency of the snowmobile, but also reduces the maintenance difficulty of the tensioning mechanism.

[0020] Furthermore, to facilitate the installation of the screw sleeve 6, a connecting plate is provided on the side of the screw sleeve 6 near the frame 1 to connect with the frame 1. The connecting plate is detachably connected to the frame 1 by screws, while the screw sleeve 6 is fixedly connected to the connecting plate. In this way, when installing the screw sleeve 6, the screw sleeve 6 together with the connecting plate is installed on the frame 1 by screws, which facilitates the installation of the screw sleeve 6.

[0021] Furthermore, to improve the reliability of the screw 5 during use, a locking nut 7 is screwed onto each screw 5, and the locking nut 7 is on the side of the screw 5 away from the connecting seat 33. In this way, when the locking nut 7 is tightened and abuts against the side wall of the screw sleeve 6, the screw 5 can be locked, thus preventing the screw 5 from rotating in the screw sleeve 6, thereby improving the reliability of the screw 5 during use. At the same time, to facilitate the operation of the screw 5 by the operator, a hexagonal adjusting block 8 is provided at the end of the screw 5 away from the connecting seat 33, so that the screw 5 can be tightened by using a wrench.

[0022] Furthermore, in order to avoid removing the pressure seat 32 from the frame 1 when loosening the abutment wheel assembly 3, multiple limiting holes 333 are evenly provided on the side wall of the first card seat 331 near the second card seat 321. At the same time, multiple insertion rods 322 that are inserted into the limiting holes 333 are provided on the side wall of the second card seat 321 near the first card seat 331. Thus, when the bolt 324 is removed from the pressure seat 32, the pressure seat 32 is pulled to move the insertion rods 322 outward in the limiting holes 333. In this way, the pressure seat 32 no longer presses against the frame 1. Therefore, it is not necessary to remove the pressure seat 32 from the frame 1 when loosening the abutment wheel assembly 3, thereby improving the convenience of loosening the abutment wheel assembly 3.

[0023] Furthermore, in order to improve the reliability of the screw 5 when it abuts against the connecting seat 33, a limiting groove 334 for limiting the screw 5 is provided on the side wall of the connecting seat 33 near the end of the screw 5. In this way, when the screw 5 abuts against the connecting seat 33, the screw 5 is located in the limiting groove 334.

[0024] Furthermore, in order to improve the fixing effect of bolt 324 on pressure seat 32, an elastic washer 323 (such as a rubber washer) is provided between pressure seat 32 and bolt 324.

[0025] Furthermore, in order to reduce the weight of the connecting shaft 34, the connecting shaft 34 is hollow. In addition, in order to facilitate the disassembly and assembly of the connecting shaft 34 and the connecting seat 33, a second screw hole 36 is provided at each of the left and right ends of the connecting shaft 34, and a threaded tube 37 that is screwed into the second screw hole 36 is provided on the side of the connecting seat 33 near the connecting shaft 34.

[0026] Furthermore, in order to improve the smoothness of the wheel body 31 during rotation, a bearing 35 is provided at each of the left and right ends of the connecting shaft 34, and the inner ring of the bearing 35 is fixedly connected to the connecting shaft 34, and the outer ring of the bearing 35 is fixedly connected to the wheel body 31.

[0027] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The above provides a detailed description of a snowmobile anti-derailment track tensioning mechanism. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand this utility model and its core concepts. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A snowmobile anti-derailment track tensioning mechanism, comprising a snowmobile frame and tracks mounted on the frame, wherein the frame further comprises a tensioning mechanism for adjusting the track tension, characterized in that: The tensioning mechanism includes an abutment wheel assembly installed at the rear end of the frame. The frame has a moving groove for the abutment wheel assembly to move. A screw sleeve is provided on the left and right sides of the frame, and a screw rod with one end abutting against the abutment wheel assembly is screwed into each screw sleeve. The abutment wheel assembly includes A connecting shaft is mounted in the vehicle frame, and two wheels that rotatably abut against the tracks are mounted on the connecting shaft. The connecting seat has two parts, which are respectively installed on the left and right ends of the connecting shaft. The screw abuts against the connecting seat. Each connecting seat has a first locking seat that engages with the moving slot at the end away from the connecting shaft. Each moving slot has an installation slot on the frame at the top of the frame for the first locking seat to pass through. Each connecting seat has a first screw hole on the end face near the frame. The pressure seat is provided in two parts, and the two pressure seats are respectively installed on the frame outside the connecting seat. The pressure seat and the connecting seat are coaxial. Each pressure seat has a second locking seat on the side wall near the frame that engages with the moving slot. Each pressure seat has a through hole aligned with the first screw hole. A bolt is installed in each through hole and screwed into the first screw hole.

2. The snowmobile anti-derailment track tensioning mechanism according to claim 1, characterized in that: Each of the threaded sleeves has a connecting plate on the side near the frame that is connected to the frame. The connecting plate is detachably connected to the frame by screws, and the threaded sleeve is fixedly connected to the connecting plate.

3. The snowmobile anti-derailment track tensioning mechanism according to claim 1, characterized in that: Each screw is screwed with a locking nut. A hexagonal adjusting block is provided at the end of the screw away from the connecting seat. The locking nut is on the side of the screw away from the connecting seat.

4. The snowmobile anti-derailment track tensioning mechanism according to claim 1, characterized in that: The first card holder has multiple limiting holes evenly distributed on the side wall near the second card holder, and the second card holder has multiple insertion rods that are inserted into the limiting holes on the side wall near the first card holder.

5. A snowmobile anti-derailment track tensioning mechanism according to claim 1, characterized in that: The connecting seat has a limiting groove on the side wall near the screw end for limiting the screw position.

6. The snowmobile anti-derailment track tensioning mechanism according to claim 1, characterized in that: An elastic washer is provided between the pressure seat and the bolt.

7. A snowmobile anti-derailment track tensioning mechanism according to claim 1, characterized in that: The connecting shaft is hollow, and a second screw hole is opened at each of the left and right ends of the connecting shaft. The connecting seat is provided with a threaded tube that is screwed into the second screw hole on the side near the connecting shaft.

8. A snowmobile anti-derailment track tensioning mechanism according to claim 1, characterized in that: A bearing is provided at each of the left and right ends of the connecting shaft. The inner ring of the bearing is fixedly connected to the connecting shaft, and the outer ring of the bearing is fixedly connected to the wheel body.

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