Side shift structure

Abstract

The utility model discloses a lateral gear shifting structure which comprises a gear shifting sliding rod penetrating through the side wall of a rear axle housing, a main body of the gear shifting sliding rod is arranged in a lateral gear shifting seat in a penetrating mode, and the lateral gear shifting seat is fixedly connected to the outer wall of the rear axle housing in the transverse direction. A main gear shifting handle is installed at the outer end of the gear shifting sliding rod, and a gear selecting operation rod perpendicular to the gear shifting sliding rod is installed in the side gear shifting base. A gear selecting shifting arm I is installed at the inner end of the gear engaging sliding rod, and an annular shifting groove is formed in a main body of the gear engaging sliding rod. A gear selecting shifting arm II is installed on a main body of the gear selecting operating rod and connected with the gear selecting operating rod through a spline, and the free end of the gear selecting shifting arm II is located in the annular shifting groove of the gear engaging sliding rod. The side-mounted type design is adopted, a driver can conveniently and rapidly conduct gear shifting operation through cooperation of the gear selecting operation rod and the main speed change handle, and operability and use efficiency of the tractor are improved; the structure is more compact, and the overall layout is more reasonable.

Description

Technical Field

[0001] The utility model relates to a side-mounted shifting structure, belonging to the technical field of shifting mechanisms. Background Art

[0002] A wheeled tractor, a type of tractor, that is, a tractor with a wheeled walking device, has various forms such as two-wheel (walking tractor) and four-wheel. To meet the requirements of wheeled tractors for supporting loaders and other engineering operations, the tractor is required to have the function of fast forward and reverse main speed change. The main speed change configuration is an important component for realizing the fast forward and reverse shifting of wheeled tractors. The main speed change configuration of the tractor facilitates the user to quickly switch between the 12 / 34 gears of the tractor, improves labor efficiency, and is increasingly favored by users.

[0003] The main speed change control is a special shifting mechanism, and its core components include a shifting handle assembly, a shifting shaft, a shifting support, etc. Generally, the operating position of the main speed change shifter is set directly above the tractor chassis, which affects the operating space of the user, causes difficult shifting, and has a large number of accessories, affecting the smoothness of the tractor's gear shifting.

[0004] In summary, it is obvious that the existing technology has inconveniences and defects in actual use, so it is necessary to improve. Content of the Utility Model

[0005] In view of the deficiencies in the background art, the utility model provides a side-mounted shifting structure. With a side-mounted design, the driver can conveniently and quickly perform shifting operations through the cooperation of the gear selection operating rod and the main speed change handle, improving the operability and use efficiency of the tractor; the structure is more compact, making the overall layout more reasonable.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A side-mounted shifting structure includes a shifting slide rod penetrating through the side wall of the rear axle housing. The main body of the shifting slide rod is arranged in a side-mounted shifting seat, and the side-mounted shifting seat is fixedly connected to the outer wall of the rear axle housing along the transverse direction; a main speed change handle is installed at the outer end of the shifting slide rod, and a gear selection operating rod perpendicular to the shifting slide rod is installed in the side-mounted shifting seat; a gear selection arm I is installed at the inner end of the shifting slide rod, and an annular dial groove is provided on the main body of the shifting slide rod; a gear selection arm II is installed on the main body of the gear selection operating rod, the gear selection arm II is connected to the gear selection operating rod through a spline, and the free end of the gear selection arm II is located in the annular dial groove of the shifting slide rod.

[0008] Further, the gear selection arm I is connected to the shifting slide rod through a spline and fastened by bolts.

[0009] Further, the free ends of the shifting lever I are respectively engaged with the first and second gear shift heads and the third and fourth gear shift heads. The first and second gear shift heads and the third and fourth gear shift heads are respectively fixed on the shift fork shafts. Shift forks are respectively installed on the shift fork shafts. The first and second gear shift fork is installed on one of the shift fork shafts, and the third and fourth gear shift fork is installed on the other shift fork shaft.

[0010] Further, an oil seal I is installed at the opening of the connection position between the side-mounted shift seat and the shift operating lever.

[0011] Further, an oil seal II is installed inside the end of the side-mounted shift seat away from the rear axle housing.

[0012] Further, the main transmission handle is connected to the shift rod by splines.

[0013] Further, a circlip, a snap ring and a cylindrical helical compression spring are successively installed at the outer end of the shift rod.

[0014] Further, the inner ring of the circlip is fastened to the end of the shift rod by bolts, and the outer ring of the circlip is embedded in the main transmission handle.

[0015] Further, a bowl-shaped plug is buckled on the outer end of the main transmission handle.

[0016] After the present utility model adopts the above technical solutions, compared with the prior art, it has the following advantages:

[0017] By operating the shift operating lever, the shift lever II drives the shift rod and the shift lever I to move left and right. The shift lever I further cooperates with the first and second gear shift heads or the third and fourth gear shift heads. By operating the main transmission handle, the shift rod and the shift lever I swing back and forth, thereby driving the first and second gear shift heads or the third and fourth gear shift heads to swing. The swinging of the first and second gear shift heads and the third and fourth gear shift heads can cause the shift fork shafts and the shift forks to move correspondingly, realizing different gear shifts;

[0018] The present utility model adopts a side-mounted design, enabling the driver to perform gear shifting operations conveniently and quickly, improving the operability and service efficiency of the tractor. At the same time, due to its relatively compact structure, it also saves the space of the tractor, making the overall layout more reasonable.

[0019] The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. Description of the Drawings

[0020] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0021] Figure 2 is a three-dimensional structure diagram of the present utility model in another direction;

[0022] Figure 3It is a structural sectional view of the present utility model;

[0023] Figure 4 is Figure 3 the structural sectional view at A-A in

[0024] In the figure, 1 - main speed change handle, 2 - side shift gear seat, 3 - shift sliding rod, 4 - shift selection lever I, 5 - first and second gear shift head, 6 - third and fourth gear shift head, 7 - shift selection lever II, 8 - shift selection operating rod, 9 - oil seal I, 10 - bowl-shaped plug, 11 - snap ring, 12 - circlip, 13 - cylindrical helical compression spring, 14 - shift fork shaft, 15 - oil seal II, 16 - rear axle housing. Specific embodiments

[0025] For a clearer understanding of the technical features, objectives, and effects of the present utility model, the specific embodiments of the present utility model will now be described with reference to the accompanying drawings.

[0026] As Figures 1-4 collectively shown, the present utility model provides a side shift gear structure, including a shift sliding rod 3 penetrating through the side wall of the rear axle housing 16. The main body of the shift sliding rod 3 is arranged inside the side shift gear seat 2, and the side shift gear seat 2 is fixedly connected to the outer wall of the rear axle housing 16 in the transverse direction.

[0027] A main speed change handle 1 is installed at the outer end of the shift sliding rod 3, and the main speed change handle 1 can drive the shift sliding rod 3 to rotate; a shift selection operating rod 8 perpendicular to the shift sliding rod 3 is installed inside the side shift gear seat 2, and the shift selection operating rod 8 can drive the shift sliding rod 3 to slide left and right inside the side shift gear seat 2.

[0028] A shift selection lever I 4 is installed at the inner end of the shift sliding rod 3. The shift selection lever I 4 is connected to the shift sliding rod 3 through a spline and fastened by a bolt. The shift sliding rod 3 can drive the shift selection lever I 4 to swing back and forth and also drive the shift selection lever I 4 to move left and right.

[0029] The free ends of the shift selection lever I 4 respectively cooperate with the first and second gear shift head 5 and the third and fourth gear shift head 6. The first and second gear shift head 5 and the third and fourth gear shift head 6 are respectively fixed on the shift fork shaft 14, and shift forks are respectively installed on the shift fork shaft 14. One of the shift fork shafts 14 is installed with a first and second gear shift fork, and the other shift fork shaft 14 is installed with a third and fourth gear shift fork.

[0030] An annular shift groove is provided on the main body of the shift sliding rod 3.

[0031] A shift selection lever II 7 is installed on the main body of the shift selection operating rod 8. The shift selection lever II 7 is connected to the shift selection operating rod 8 through a spline. The free end of the shift selection lever II 7 is located in the annular shift groove of the shift sliding rod 3, and the shift selection operating rod 8 drives the shift sliding rod 3 to move left and right through the shift selection lever II 7.

[0032] An oil seal I 9 is installed at the opening of the connection position between the side shift gear seat 2 and the gear selection operating lever 8.

[0033] An oil seal II 15 is installed inside the end of the side shift gear seat 2 away from the rear axle housing 16.

[0034] The main transmission handle 1 is connected to the gear shifting slide rod 3 by splines. A circlip 12, a spring retaining ring 11, and a cylindrical helical compression spring 13 are sequentially installed at the outer end of the gear shifting slide rod 3. The inner ring of the circlip 12 is fastened to the end of the gear shifting slide rod 3 by bolts, and the outer ring of the circlip 12 is embedded in the main transmission handle 1.

[0035] A bowl-shaped plug 10 is buckled on the outer end of the main transmission handle 1.

[0036] The specific working principle of the present utility model:

[0037] By operating the gear selection operating lever 8, the gear selection arm II 7 drives the gear shifting slide rod 3 and the gear selection arm I 4 to move left and right. The gear selection arm I 4 then cooperates with the first and second gear selector head 5 or the third and fourth gear selector head 6. By operating the main transmission handle 1, the gear shifting slide rod 3 and the gear selection arm I 4 swing back and forth, thereby driving the first and second gear selector head 5 or the third and fourth gear selector head 6 to swing. The swinging of the first and second gear selector head 5 and the third and fourth gear selector head 6 can cause the shift fork shaft 14 and the shift fork to move correspondingly. Finally, the shift fork will push the shift engagement sleeve to engage with different gears, thus realizing different gear shifts.

[0038] The side shift gear structure provided by the present utility model enables the driver to perform gear shifting operations conveniently and quickly, improving the operability and use efficiency of the tractor. At the same time, due to its relatively compact structure, it also saves the space of the tractor, making the overall layout more reasonable.

[0039] The above is an example of the best implementation mode of the present utility model. The parts not described in detail are all common general knowledge of those skilled in the art. The protection scope of the present utility model is subject to the content of the claims. Any equivalent transformation based on the technical inspiration of the present utility model is also within the protection scope of the present utility model.

Claims

1. A side shifting structure, characterized in that: The invention comprises a gear-engaging slide rod (3) which is arranged to penetrate the side wall of a rear axle housing (16); the main body of the gear-engaging slide rod (3) is arranged to penetrate the side shifting seat (2); the side shifting seat (2) is fixedly connected to the outer wall of the rear axle housing (16) in the transverse direction; a main speed change handle (1) is installed on the outer end of the gear-engaging slide rod (3); a gear selection operating rod (8) which is arranged perpendicular to the gear-engaging slide rod (3) is installed in the side shifting seat (2); a gear selection lever arm I (4) is installed on the inner end of the gear-engaging slide rod (3); an annular shifting groove is arranged on the main body of the gear-engaging slide rod (3); a gear selection lever arm II (7) is installed on the main body of the gear selection operating rod (8); the gear selection lever arm II (7) is connected to the gear selection operating rod (8) by a spline; the free end of the gear selection lever arm II (7) is located in the annular shifting groove of the gear-engaging slide rod (3).

2. A side shifting structure according to claim 1, characterized in that: The gear selection lever arm I (4) and the gear engaging slide rod (3) are connected via a spline and fastened via bolts.

3. A side shifting structure according to claim 1, characterized in that: The free ends of the gear selection lever arm I (4) respectively cooperate with the first and second gear shift heads (5) and the third and fourth gear shift heads (6), and the first and second gear shift heads (5) and the third and fourth gear shift heads (6) are respectively fixed on the fork shafts (14), and the fork shafts (14) are respectively equipped with shift forks, one of the fork shafts (14) is equipped with the first and second gear shift forks, and the other fork shaft (14) is equipped with the third and fourth gear shift forks.

4. A side shifting structure according to claim 1, characterized in that: An oil seal I (9) is installed at the opening of the connection position between the side shift seat (2) and the gear selection operating lever (8).

5. A side shifting structure according to claim 1, characterized in that: An oil seal II (15) is installed in the end of the side shifting seat (2) away from the rear axle housing (16).

6. A side shifting structure according to claim 1, characterized in that: The main speed change handle (1) and the gear shifting slide rod (3) are connected via a spline.

7. A side shifting structure according to claim 6, characterized in that: The outer end of the gear-engaging slide rod (3) is sequentially mounted with a retaining spring (12), a spring retaining ring (11) and a cylindrical helical compression spring (13).

8. A side shifting structure according to claim 7, characterized in that: The inner ring of the retaining spring (12) is fastened to the end of the gear-engaging slide rod (3) by means of bolts, and the outer ring of the retaining spring (12) is embedded in the main speed-changing handle (1).

9. A side shifting structure according to claim 1, characterized in that: A bowl-shaped plug (10) is buckled onto the outer end of the main speed change handle (1).

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