Crawler-type walking mechanism of sleigh car

Abstract

The utility model provides a crawler-type walking mechanism of a sleigh car, and belongs to the technical field of sleigh cars. The problem that an existing sled car is poor in damping effect is solved. The crawler-type walking mechanism of the sleigh car comprises two oppositely-arranged mounting plates, a driving shaft rotationally arranged between the two mounting plates, a driven shaft parallel to the driving shaft and a crawler belt, the driving shaft is provided with a driving wheel in transmission connection with the crawler belt, and the driven shaft is provided with a driven wheel in transmission connection with the crawler belt. A mounting shaft parallel to the driving shaft is arranged between the two mounting plates, a front wheel carrier and a rear wheel carrier are rotationally arranged on the mounting shaft, a front thrust wheel is arranged on the front wheel carrier, a rear thrust wheel is arranged on the rear wheel carrier, and a damping structure for damping the front thrust wheel and the rear thrust wheel is arranged on the mounting shaft. Due to the fact that the damping structure is arranged, damping can be conducted on the front thrust wheel and the rear thrust wheel, and the comfort of the sleigh car is improved.

Description

Technical Field

[0001] This utility model belongs to the field of sled technology and relates to a walking mechanism, particularly a tracked walking mechanism for sleds. Background Technology

[0002] A sled 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. Sleds are widely used in ski resorts, snow rescue, transportation, and many other applications. 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 connected to it. The traction mechanism includes a connecting component connected to the front structure at one end, and a seat and a driving component mounted on the connecting component. The driving component is detachably connected to the connecting component and includes sleds or wheels.

[0003] The aforementioned sled's front and rear tension wheels are mounted on the same tension frame. Due to the lack of a shock-absorbing structure, the sled's comfort is poor. To address this, patent application number 201410557660.X discloses a sled track guide wheel frame. This sled track guide wheel frame uses shock absorbers for vibration reduction. However, due to space limitations and installation constraints, the shock absorbers are relatively short, resulting in poor vibration damping performance and consequently, poor sled comfort. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a tracked walking mechanism for a sled with good shock absorption.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] The tracked running mechanism of the sled includes two oppositely arranged mounting plates, a drive shaft rotatably disposed between the two mounting plates, a driven shaft parallel to the drive shaft, and a track. The drive shaft is provided with a drive wheel that is connected to the track drive, and the driven shaft is provided with a driven wheel that is connected to the track drive. A mounting shaft parallel to the drive shaft is disposed between the two mounting plates. A front wheel frame and a rear wheel frame are rotatably disposed on the mounting shaft. A front support roller is disposed on the front wheel frame, and a rear support roller is disposed on the rear wheel frame. A shock-absorbing structure is provided on the mounting shaft for damping the front and rear support rollers.

[0007] The tracks are tensioned between the drive sprocket and the driven sprocket, with the front and rear track rollers pressing against the tracks. Due to the shock-absorbing structure, the front and rear track rollers can be damped, improving the comfort of the sled.

[0008] In the tracked running mechanism of the above-mentioned sled, the shock absorption structure includes at least one torsion spring sleeved on the mounting shaft. One end of the torsion spring acts on the front wheel frame, and the other end of the torsion spring acts on the rear wheel frame. The front support wheel and the rear support wheel press downward against the track under the elastic force of the torsion spring.

[0009] The torsion spring causes the front wheel frame to swing downward and backward, and the rear wheel frame to swing downward and forward, pressing the front and rear track rollers against the track. When the track passes over uneven surfaces, the front and rear wheel frames are compressed by the road surface, allowing the front and rear track rollers to adapt to the road surface.

[0010] In the tracked walking mechanism of the aforementioned sled, the front wheel frame includes a front wheel axle parallel to the mounting shaft and a front mounting tube rotatably sleeved on the mounting shaft. The front wheel axle is fixedly connected to the front mounting tube via a front connecting tube, and the front support rollers are rotatably mounted on the front wheel axle. There are two front support rollers, each located at one end of the front wheel axle, and preferably the front connecting tube is perpendicular to the front wheel axle.

[0011] In the tracked walking mechanism of the aforementioned sled, the front wheel axle is fixedly connected to the front mounting tube via two front connecting tubes, and a front limiting plate is provided between the two front connecting tubes. One end of the torsion spring acts on the front limiting plate. Each front connecting tube corresponds to one front mounting tube.

[0012] In the tracked walking mechanism of the above-mentioned sled, the front limiting plate is provided with a front limiting hole corresponding to the torsion spring, and one end of the torsion spring passes through the front limiting hole.

[0013] In the tracked walking mechanism of the aforementioned sled, the rear wheel frame includes a rear wheel axle parallel to the mounting shaft and a rear mounting tube rotatably sleeved on the mounting shaft. The rear wheel axle is fixedly connected to the rear mounting tube via a rear connecting tube, and the rear support rollers are rotatably mounted on the rear wheel axle. There are two rear support rollers, each located at one end of the rear wheel axle, and preferably the rear connecting tube is perpendicular to the rear wheel axle.

[0014] In the tracked walking mechanism of the aforementioned sled, the rear wheel axle is fixedly connected to the rear mounting tube via two rear connecting tubes, and a rear limiting plate is provided between the two rear connecting tubes. The other end of the torsion spring acts on the rear limiting plate. Each rear connecting tube corresponds to one rear mounting tube.

[0015] In the tracked walking mechanism of the above-mentioned sled, the rear limiting plate is provided with a rear limiting hole corresponding to the torsion spring, and the other end of the torsion spring passes through the rear limiting hole.

[0016] In the tracked walking mechanism of the above-mentioned sled, the two front mounting tubes are located between the two rear mounting tubes, and there are three torsion springs. The middle torsion spring is located between the two front connecting tubes, the left torsion spring is located between one of the front connecting tubes and the rear connecting tube, and the right torsion spring is located between the other front connecting tube and the rear connecting tube.

[0017] Compared with existing technologies, the tracked running gear of this sled has the following advantages:

[0018] Because of the shock-absorbing structure, the front and rear support wheels can be damped, resulting in good shock absorption and improved comfort of the sled. The shock-absorbing structure includes a torsion spring, one end of which acts on the front wheel frame and the other end on the rear wheel frame. This simplifies the shock absorption structure while still achieving the desired shock absorption effect, thus reducing costs. The overall structure is reasonably arranged and easy to assemble. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the tracked walking mechanism.

[0020] Figure 2 This is a schematic diagram of the internal structure of this tracked walking mechanism.

[0021] Figure 3 This is a schematic diagram of the shock absorption structure in this tracked walking mechanism.

[0022] In the diagram, 1. Mounting plate; 2. Drive shaft; 3. Driven shaft; 4. Track; 5. Drive wheel; 6. Driven wheel; 7. Mounting shaft; 8. Front wheel frame; 81. Front wheel axle; 82. Front mounting tube; 83. Front connecting tube; 9. Rear wheel frame; 91. Rear wheel axle; 92. Rear mounting tube; 93. Rear connecting tube; 10. Front track roller; 11. Rear track roller; 12. Torsion spring; 13. Front limit plate; 131. Front limit hole; 14. Rear limit plate; 141. Rear limit hole. Detailed Implementation

[0023] 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.

[0024] like Figure 1 The tracked walking mechanism of the sled shown includes two oppositely arranged mounting plates 1, a drive shaft 2 rotatably disposed between the two mounting plates 1, a driven shaft 3 parallel to the drive shaft 2, and a track 4. The drive shaft 2 extends in the left-right direction. The mounting plates 1 are fixed to the sled body. The drive shaft 2 is located at the front end of the mounting plates 1, and the driven shaft 3 is located at the rear end of the mounting plates 1. Two drive wheels 5, which are connected to the track 4, are fixed to the drive shaft 2. Two driven wheels 6, which are connected to the track 4, are rotatably disposed on the driven shaft 3. The track 4 is wound between the drive wheels 5 and the driven wheels 6.

[0025] like Figure 2 As shown, a mounting shaft 7 parallel to the drive shaft 2 is provided between the two mounting plates 1. A front wheel frame 8 and a rear wheel frame 9 are rotatably mounted on the mounting shaft 7, meaning the front wheel frame 8 and rear wheel frame 9 can rotate independently relative to the mounting shaft 7. A front support roller 10 is rotatably mounted on the front wheel frame 8, and a rear support roller 11 is rotatably mounted on the rear wheel frame 9. The front support roller 10 and rear support roller 11 press against the track 4. The mounting shaft 7 is provided with a shock-absorbing structure for damping the front support roller 10 and rear support roller 11. Due to the shock-absorbing structure, the front support roller 10 and rear support roller 11 can be damped, improving the comfort of the sled. In this embodiment, as... Figure 2 As shown, two mounting shafts 7 are provided between the two mounting plates 1, and each mounting shaft 7 is provided with a front wheel bracket 8 and a rear wheel bracket 9.

[0026] In this embodiment, as Figure 2 and Figure 3 As shown, the shock absorption structure includes three torsion springs 12 sleeved on the mounting shaft 7. One end of the torsion spring 12 acts on the front wheel frame 8, and the other end of the torsion spring 12 acts on the rear wheel frame 9. The front support roller 10 and the rear support roller 11 are pressed downward against the track 4 by the elastic force of the torsion springs 12. The torsion springs 12 cause the front wheel frame 8 to swing downward and backward, and the rear wheel frame 9 to swing downward and forward, pressing the front support roller 10 and the rear support roller 11 against the track 4. When the track 4 passes over an uneven road surface, the front wheel frame 8 and the rear wheel frame 9 are squeezed by the road surface, allowing the front support roller 10 and the rear support roller 11 to adapt to the road surface.

[0027] like Figure 3 As shown, the front wheel frame 8 includes a front wheel axle 81 parallel to the mounting shaft 7 and a front mounting tube 82 rotatably sleeved on the mounting shaft 7. The front wheel axle 81 is fixedly connected to the front mounting tube 82 through a front connecting tube 83. The front support rollers 10 are rotatably mounted on the front wheel axle 81. There are two front support rollers 10, which are respectively located at both ends of the front wheel axle 81. Preferably, the front connecting tube 83 is perpendicular to the front wheel axle 81.

[0028] like Figure 3 As shown, the front wheel axle 81 is fixedly connected to the front mounting tube 82 through two front connecting tubes 83. A front limiting plate 13 is provided between the two front connecting tubes 83. The front limiting plate 13 is provided with a front limiting hole 131 corresponding to the torsion spring 12. One end of the torsion spring 12 passes through the front limiting hole 131.

[0029] like Figure 3 As shown, the rear wheel frame 9 includes a rear wheel axle 91 parallel to the mounting shaft 7 and a rear mounting tube 92 rotatably sleeved on the mounting shaft 7. The rear wheel axle 91 is fixedly connected to the rear mounting tube 92 via a rear connecting tube 93. The rear support rollers 11 are rotatably mounted on the rear wheel axle 91. There are two rear support rollers 11, which are respectively located at both ends of the rear wheel axle 91. Preferably, the rear connecting tube 93 is perpendicular to the rear wheel axle 91.

[0030] like Figure 3 As shown, the rear wheel axle 91 is fixedly connected to the rear mounting tube 92 through two rear connecting tubes 93. A rear limiting plate 14 is provided between the two rear connecting tubes 93. The rear limiting plate 14 is provided with a rear limiting hole 141 corresponding to the torsion spring 12. The other end of the torsion spring 12 passes through the rear limiting hole 141.

[0031] like Figure 2 , 3 As shown, the two front mounting tubes 82 are located between the two rear mounting tubes 92, the torsion spring 12 in the middle is located between the two front connecting tubes 83, the torsion spring 12 on the left is located between one of the front connecting tubes 83 and the rear connecting tube 93, and the torsion spring 12 on the right is located between the other front connecting tube 83 and the rear connecting tube 93.

[0032] 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 caterpillar (4) type walking mechanism of a snowmobile, comprising two oppositely arranged mounting plates (1), a driving shaft (2) rotatably arranged between the two mounting plates (1), a driven shaft (3) parallel to the driving shaft (2), and a caterpillar (4), wherein the driving shaft (2) is provided with a driving wheel (5) in driving connection with the caterpillar (4), the driven shaft (3) is provided with a driven wheel (6) in driving connection with the caterpillar (4), and a mounting shaft (7) parallel to the driving shaft (2) is arranged between the two mounting plates (1), characterized in that, The mounting shaft (7) is provided with a front wheel frame (8) and a rear wheel frame (9) rotatably arranged thereon, the front wheel frame (8) is provided with a front supporting wheel (10), the rear wheel frame (9) is provided with a rear supporting wheel (11), and the mounting shaft (7) is provided with a damping structure for damping the front supporting wheel (10) and the rear supporting wheel (11).

2. The track (4) type running gear of a snowmobile vehicle according to claim 1, characterized in that The damping structure comprises at least one torsion spring (12) sleeved on the mounting shaft (7), one end of the torsion spring (12) acts on the front wheel frame (8), and the other end of the torsion spring (12) acts on the rear wheel frame (9), and the front supporting wheel (10) and the rear supporting wheel (11) are respectively downwardly abutted against the track (4) under the elastic force of the torsion spring (12).

3. A track (4) type running gear for a snowmobile vehicle according to claim 2, characterized in that The front wheel frame (8) comprises a front wheel shaft (81) parallel to the mounting shaft (7) and a front mounting pipe (82) rotatably sleeved on the mounting shaft (7), the front wheel shaft (81) is fixedly connected with the front mounting pipe (82) through a front connecting pipe (83), and the front supporting wheel (10) is rotatably arranged on the front wheel shaft (81).

4. A track (4) type running gear for a snowmobile vehicle according to claim 3, characterized in that The front wheel shaft (81) is fixedly connected with the front mounting pipe (82) through two front connecting pipes (83), a front limiting plate (13) is arranged between the two front connecting pipes (83), and one end of the torsion spring (12) acts on the front limiting plate (13).

5. A track (4) type running gear for a snowmobile vehicle according to claim 4, characterized in that The front limiting plate (13) is provided with a front limiting hole (131) corresponding to the torsion spring (12), and one end of the torsion spring (12) is arranged in the front limiting hole (131).

6. The track (4) type running gear of a snowmobile vehicle according to claim 3, characterized in that The rear wheel frame (9) comprises a rear wheel shaft (91) parallel to the mounting shaft (7) and a rear mounting pipe (92) rotatably sleeved on the mounting shaft (7), the rear wheel shaft (91) is fixedly connected with the rear mounting pipe (92) through a rear connecting pipe (93), and the rear supporting wheel (11) is rotatably arranged on the rear wheel shaft (91).

7. A track (4) type running gear for a snowmobile vehicle according to claim 6, characterized in that The rear wheel shaft (91) is fixedly connected with the rear mounting pipe (92) through two rear connecting pipes (93), a rear limiting plate (14) is arranged between the two rear connecting pipes (93), and the other end of the torsion spring (12) acts on the rear limiting plate (14).

8. A track (4) type running gear for a snowmobile vehicle according to claim 7, characterized in that The rear limiting plate (14) is provided with a rear limiting hole (141) corresponding to the torsion spring (12), and the other end of the torsion spring (12) is arranged in the rear limiting hole (141).

9. The track (4) type running gear of a snowmobile vehicle according to claim 6, characterized in that, The two front mounting pipes (82) are located between the two rear mounting pipes (92), the torsion spring (12) is three, the torsion spring (12) located in the middle is located between the two front connecting pipes (83), the torsion spring (12) located on the left side is located between one of the front connecting pipes (83) and the rear connecting pipe (93), and the torsion spring (12) located on the right side is located between the other front connecting pipe (83) and the rear connecting pipe (93).

Images