Gear transmission structure of beach motorcycle

Abstract

The utility model belongs to the technical field of beach motorcycles, and particularly relates to a gear transmission structure of a beach motorcycle. An input gear is arranged on the input shaft, a first intermediate gear and a second intermediate gear are arranged on the intermediate shaft, a forward gear, a reverse gear and a third intermediate gear are arranged on the gear shifting shaft, a gear shifting moving wheel is arranged on the gear shifting shaft between the forward gear and the reverse gear, and the gear shifting moving wheel is in spline connection with the intermediate shaft. An input gear is arranged on the input shaft, an output gear is arranged on the output shaft, the input gear is in meshing transmission with a first intermediate gear, the first intermediate gear is in meshing transmission with the forward gear when the gear shifting moving wheel is connected with the forward gear, and the second intermediate gear is in meshing transmission with the reverse gear when the gear shifting moving wheel is connected with the reverse gear. The third intermediate gear is in meshing transmission with the output gear; the automobile steering system is compact in structure, convenient to switch and beneficial to improving the driving experience feeling of a driver.

Description

Technical field:

[0001] The utility model belongs to the technical field of beach motorcycles, in particular to a gear transmission structure of a beach motorcycle. Background technology:

[0002] Beach motorcycles are motorcycles that are ridden on the beach and are often seen on beaches in some scenic spots. During the riding of beach motorcycles, it is necessary to move forward and backward. In order to achieve a quick switch between the two states, it is necessary to provide a compact and easy-to-switch gear transmission structure to facilitate the driver's driving. Summary of the invention:

[0003] The utility model aims to provide a gear transmission structure of a beach motorcycle which has a compact structure and is convenient to switch.

[0004] The utility model is achieved in this way:

[0005] A gear transmission structure of a beach motorcycle comprises an input shaft, an intermediate shaft, a shift shaft and an output shaft, wherein an input gear is arranged on the input shaft, a first intermediate gear and a second intermediate gear are arranged on the intermediate shaft, a forward gear, a reverse gear and a third intermediate gear are arranged on the shift shaft, a shift moving wheel is arranged on the shift shaft between the forward gear and the reverse gear, the shift moving wheel is spline-connected to the intermediate shaft, an output gear is arranged on the output shaft, the input gear is meshed with the first intermediate gear for transmission, the first intermediate gear is meshed with the forward gear for transmission when the shift moving wheel is connected to the forward gear, the second intermediate gear is meshed with the reverse gear for transmission when the shift moving wheel is connected to the reverse gear, and the third intermediate gear is meshed with the output gear for transmission.

[0006] In the above-mentioned gear transmission structure of a beach motorcycle, the shifting and moving wheel includes a cylindrical wheel body, an annular groove is arranged in the middle of the wheel body, and more than two first connecting protrusions are evenly distributed circumferentially on one end surface of the wheel body, and a first plug-in groove is arranged on the side surface adjacent to the shifting and moving wheel on the forward gear, and the position and number of the first connecting protrusions correspond one-to-one to the first plug-in groove, and more than two second connecting protrusions are evenly distributed circumferentially on the other end surface of the wheel body, and a second plug-in groove is arranged on the side surface adjacent to the shifting and moving wheel on the reverse gear, and the position and number of the second connecting protrusions correspond one-to-one to the second plug-in groove.

[0007] In the above-mentioned gear transmission structure of an ATV motorcycle, the number of the first connecting protrusion, the first plugging slot, the second connecting protrusion and the second plugging slot are all three.

[0008] In the above-mentioned gear transmission structure of a beach motorcycle, a first through hole is provided on the forward gear, the intermediate shaft passes through the first through hole, and a first sleeve is provided on the inner wall of the first through hole.

[0009] In the above-mentioned gear transmission structure of a beach motorcycle, a plurality of oil storage grooves are arranged on the inner hole wall of the first sleeve.

[0010] In the above-mentioned gear transmission structure of a beach motorcycle, a second through hole is provided on the reverse gear, the intermediate shaft passes through the second through hole, and a second sleeve is provided on the inner hole wall of the second through hole.

[0011] In the above-mentioned gear transmission structure of a beach motorcycle, a plurality of oil storage grooves are arranged on the inner hole wall of the second sleeve.

[0012] In the above-mentioned gear transmission structure of a beach motorcycle, the intermediate shaft includes a first shaft section, a second shaft section, a third shaft section, a fourth shaft section, a fifth shaft section and a sixth shaft section; the third intermediate gear and the second shaft section are an integrated structure; the reverse gear is mounted on the third shaft section, an elastic retaining ring is clamped on the third shaft section, a first flat washer is arranged between the reverse gear and the third intermediate gear, and a second flat washer is arranged between the reverse gear and the elastic retaining ring; the fourth shaft section is a spline shaft, and the shift moving wheel is mounted on the fourth shaft section; the diameter of the fifth shaft section is smaller than the diameter of the fourth shaft section, and a step surface is formed between the fifth shaft section and the fourth shaft section, the reverse gear is mounted on the fifth shaft section, a thrust washer is mounted on the sixth shaft section, and third flat washers are respectively arranged between the reverse gear and the step surface and between the reverse gear and the thrust washer.

[0013] The outstanding advantages of the utility model compared with the prior art are:

[0014] 1. The utility model realizes the switching between forward and reverse driving modes by setting a shift shaft, and setting a forward gear, a reverse gear and a shift moving wheel on the shift shaft. The utility model has a compact structure and convenient switching, which is conducive to improving the driving experience of the driver;

[0015] 2. The utility model provides a first sleeve and a second sleeve on the inner hole wall of the forward gear and the reverse gear, respectively, and provides an oil storage groove on the first sleeve and the second sleeve, respectively, which can improve the wear resistance and lubricity of the forward gear and the reverse gear, and extend the service life of the forward gear and the reverse gear;

[0016] 3. The forward gear of the utility model is limited between the third intermediate gear and the elastic retaining ring by the elastic retaining ring, and the reverse gear is limited between the step surface between the fifth shaft section and the fourth shaft section and the thrust washer, which is convenient for disassembly and assembly. Description of the drawings:

[0017] Figure 1 It is a schematic diagram of the utility model;

[0018] Figure 2It is a schematic diagram of the connection between the shift moving wheel and the forward gear of the utility model;

[0019] Figure 3 It is a schematic diagram of the shifting moving wheel of the utility model;

[0020] Figure 4 It is a schematic diagram of the reverse gear of the utility model;

[0021] Figure 5 It is a cross-sectional view of the utility model in which the shift moving wheel is not connected to the forward gear and the reverse gear.

[0022] In the figure: 1, input shaft; 2, intermediate shaft; 3, shift shaft; 4, output shaft; 5, input gear; 6, first intermediate gear; 7, second intermediate gear; 8, forward gear; 9, reverse gear; 10, third intermediate gear; 11, shift moving wheel; 12, output gear; 13, wheel body; 14, annular groove; 15, first connecting protrusion; 16, first plug-in groove; 17, second connecting protrusion; 18, second plug-in groove; 19, spline hole; 20, first bushing; 21, second bushing; 22, oil storage groove; 23, first shaft section; 24, third shaft section; 25, fourth shaft section; 26, fifth shaft section; 27, sixth shaft section; 28, circlip; 29, first flat washer; 30, second flat washer; 31, thrust washer; 32, third flat washer. Specific implementation method:

[0023] The present invention is further described below with reference to specific embodiments. Figure 1 —5:

[0024] The utility model provides a gear transmission structure of a beach motorcycle. The gear transmission structure of the beach motorcycle comprises an input shaft 1, an intermediate shaft 2, a shift shaft 3 and an output shaft 4. An input gear 5 is arranged on the input shaft 1, a first intermediate gear 6 and a second intermediate gear 7 are arranged on the intermediate shaft 2, a forward gear 8, a reverse gear 9 and a third intermediate gear 10 are arranged on the shift shaft 3, a shift moving wheel 11 is arranged on the shift shaft 3 between the forward gear 8 and the reverse gear 9, the shift moving wheel 11 is spline-connected with the shift shaft 3, an output gear 12 is arranged on the output shaft 4, the input gear 5 is meshed with the first intermediate gear 6 for transmission, the first intermediate gear 6 is meshed with the forward gear 8 for transmission when the shift moving wheel 11 is connected to the forward gear 8, the second intermediate gear 6 is meshed with the reverse gear 9 for transmission when the shift moving wheel 11 is connected to the reverse gear 9, and the third intermediate gear 10 is meshed with the output gear 12 for transmission.

[0025] When the forward gear is engaged, the shift fork drives the shift moving wheel 11 to move and connect with the forward gear 8. At this time, the first intermediate gear 6 is meshed with the forward gear 8 to drive the shift shaft 3 to rotate, and the reverse gear 9 is idling on the shift shaft 3. The third intermediate gear 10 which is an integral structure with the shift shaft 3 is meshed with the output gear 12 to drive the output shaft 4 to rotate forward, thereby realizing the forward movement of the beach motorcycle.

[0026] When engaging the reverse gear, the shift fork drives the shift moving wheel 11 to move and connect with the reverse gear 9. At this time, the second intermediate gear 7 is meshed with the reverse gear 9 to drive the shift shaft 3 to rotate, and the forward gear 8 is idling on the shift shaft 3. The third intermediate gear 10 which is an integral structure with the shift shaft 3 is meshed with the output gear 12 to drive the output shaft 4 to reverse, thereby realizing the reverse gear of the beach motorcycle.

[0027] When the shift fork is located between the forward gear 8 and the reverse gear 9, the forward gear 8 and the reverse gear 9 both idle on the shift shaft 3, and the beach motorcycle is in neutral.

[0028] Further, the shift moving wheel 11 includes a cylindrical wheel body 13, a spline hole 19 is provided in the middle of the wheel body 13, and an annular groove 14 is provided in the middle of the wheel body 13 for connecting with a part that drives the shift moving wheel 11 to move, such as a shift fork. Two or more first connecting protrusions 15 are evenly distributed circumferentially on one end surface of the wheel body 13, and a first plug-in groove 16 whose position and number correspond to the first connecting protrusion 15 is provided on the side surface of the forward gear 8 adjacent to the shift moving wheel 11, and two or more second connecting protrusions 17 are evenly distributed circumferentially on the other end surface of the wheel body 13, and a second plug-in groove 18 whose position and number correspond to the second connecting protrusion 17 is provided on the side surface of the reverse gear 9 adjacent to the shift moving wheel 11.

[0029] In this embodiment, there are three first connection protrusions 15 , three first insertion slots 16 , three second connection protrusions 17 and three second insertion slots 18 .

[0030] Since the forward gear 8 idles on the shift shaft 3 in reverse gear, in order to improve wear resistance, a first through hole is provided on the forward gear 8, the intermediate shaft 2 passes through the first through hole, and a first sleeve 20 is provided on the inner wall of the first through hole.

[0031] The utility model also provides a plurality of oil storage grooves on the inner hole wall of the first sleeve 20. Specifically, the oil storage grooves are hemispherical grooves, and lubricating oil can be stored in the oil storage grooves to improve the lubrication between the shift shaft 3 and the forward gear 8.

[0032] Similarly, the utility model provides a second through hole on the reverse gear 9, the intermediate shaft 2 passes through the second through hole, and a second sleeve 21 is provided on the inner hole wall of the second through hole. A plurality of oil storage grooves 22 are provided on the inner hole wall of the second sleeve 21.

[0033] It should be noted that the intermediate shaft 2 of the utility model includes a first shaft section 23, a second shaft section, a third shaft section 24, a fourth shaft section 25, a fifth shaft section 26 and a sixth shaft section 27; the third intermediate gear 10 and the second shaft section are an integrated structure; the reverse gear 9 is sleeved on the third shaft section 24, an elastic ring 28 is clamped on the third shaft section 24, a first flat washer 29 is arranged between the reverse gear 9 and the third intermediate gear 10, and a first flat washer 29 is arranged between the reverse gear 9 and the elastic ring 28. A second flat washer 30 is provided; the fourth shaft segment 25 is a spline shaft, and the shift moving wheel 11 is mounted on the fourth shaft segment 25; the diameter of the fifth shaft segment 26 is smaller than the diameter of the fourth shaft segment 25, and a step surface is formed between the fifth shaft segment 26 and the fourth shaft segment 25, the reverse gear 9 is mounted on the fifth shaft segment 26, and a thrust washer 31 is mounted on the sixth shaft segment 27, and a third flat washer 32 is respectively arranged between the reverse gear 9 and the step surface and between the reverse gear 9 and the thrust washer 31.

[0034] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A gear transmission structure for a beach motorcycle, characterized in that: The invention comprises an input shaft (1), an intermediate shaft (2), a shift shaft (3) and an output shaft (4); an input gear (5) is arranged on the input shaft (1); a first intermediate gear (6) and a second intermediate gear (7) are arranged on the intermediate shaft (2); a forward gear (8), a reverse gear (9) and a third intermediate gear (10) are arranged on the shift shaft (3); a shift moving wheel (11) is arranged on the shift shaft (3) between the forward gear (8) and the reverse gear (9); the shift moving wheel (11) is arranged on the shift shaft (3) ) is spline-connected to the intermediate shaft (2); an output gear (12) is arranged on the output shaft (4); the input gear (5) is meshed with the first intermediate gear (6) for transmission; the first intermediate gear (6) is meshed with the forward gear (8) when the shift moving wheel (11) is connected to the forward gear (8); the second intermediate gear (7) is meshed with the reverse gear (9) when the shift moving wheel (11) is connected to the reverse gear (9); and the third intermediate gear (10) is meshed with the output gear (12) for transmission.

2. The gear transmission structure of a beach motorcycle according to claim 1, characterized in that: The shift moving wheel (11) comprises a columnar wheel body (13), an annular groove (14) is arranged in the middle of the wheel body (13), two or more first connecting protrusions (15) are evenly distributed circumferentially on one end surface of the wheel body (13), a first plugging groove (16) whose position and number correspond to the first connecting protrusions (15) is arranged on the side surface of the forward gear (8) adjacent to the shift moving wheel (11), two or more second connecting protrusions (17) are evenly distributed circumferentially on the other end surface of the wheel body (13), and a second plugging groove (18) whose position and number correspond to the second connecting protrusions (17) is arranged on the side surface of the reverse gear (9) adjacent to the shift moving wheel (11).

3. The gear transmission structure of a beach motorcycle according to claim 2, characterized in that: There are three of each of the first connection protrusion (15), the first insertion groove (16), the second connection protrusion (17) and the second insertion groove (18).

4. A gear transmission structure for a beach motorcycle according to claim 1, 2 or 3, characterized in that: The forward gear (8) is provided with a first through hole, the intermediate shaft (2) passes through the first through hole, and a first shaft sleeve (20) is provided on the inner wall of the first through hole.

5. The gear transmission structure of a beach motorcycle according to claim 4, characterized in that: A plurality of oil storage grooves are arranged on the inner hole wall of the first shaft sleeve (20).

6. The gear transmission structure of a beach motorcycle according to claim 1, 2 or 3, characterized in that: The reverse gear (9) is provided with a second through hole, the intermediate shaft (2) passes through the second through hole, and a second shaft sleeve (21) is provided on the inner hole wall of the second through hole.

7. The gear transmission structure of a beach motorcycle according to claim 6, characterized in that: A plurality of oil storage grooves (22) are provided on the inner hole wall of the second shaft sleeve (21).

8. The gear transmission structure of a beach motorcycle according to claim 1, characterized in that: The intermediate shaft (2) comprises a first shaft section (23), a second shaft section, a third shaft section (24), a fourth shaft section (25), a fifth shaft section (26) and a sixth shaft section (27); the third intermediate gear (10) and the second shaft section are an integrated structure; the reverse gear (9) is sleeved on the third shaft section (24), an elastic retaining ring (28) is clamped on the third shaft section (24), a first flat washer (29) is arranged between the reverse gear (9) and the third intermediate gear (10), and a second flat washer is arranged between the reverse gear (9) and the elastic retaining ring (28). The fourth shaft section (25) is a spline shaft, and the gear shift moving wheel (11) is sleeved on the fourth shaft section (25); the diameter of the fifth shaft section (26) is smaller than the diameter of the fourth shaft section (25), and a step surface is formed between the fifth shaft section (26) and the fourth shaft section (25); the reverse gear (9) is sleeved on the fifth shaft section (26), and a thrust washer (31) is sleeved on the sixth shaft section (27); and a third flat washer (32) is respectively arranged between the reverse gear (9) and the step surface and between the reverse gear (9) and the thrust washer (31).

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