Three-speed power output mechanism of tractor

Abstract

The utility model discloses a three-speed power output mechanism of a tractor, which relates to the field of power output of tractors and comprises an input shaft and a first gear arranged on the left side of the surface of the input shaft, a meshing sleeve and a seat are arranged at the middle end of the output shaft and are driven by a gear shift lever gear shifting fork, and the gear shift lever gear shifting fork is arranged on the first gear. And the power output speed of the tractor is adjusted by adjusting the meshing sleeve and the seat. According to the three-speed power output mechanism of the tractor, three-speed power output is achieved under the condition that gears do not need to be replaced, materials and cost are saved, the application range is wider, when the meshing sleeve and base move rightwards, transmission force is transmitted from the input shaft to the fifth gear, the fifth gear drives the sixth gear, the sixth gear drives the output shaft, transmission of the third rotating speed is achieved, and the transmission efficiency is improved. When the meshing sleeve and the base move leftwards by a first gear, transmission force is transmitted from the input shaft to the third gear, the third gear drives the fourth gear to move, the fourth gear drives the output shaft to output, transmission of the second rotating speed is achieved, and when the meshing sleeve and the base move leftwards by a second gear, transmission force is transmitted from the input shaft to the first gear.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor power output, in particular to a three-speed power output mechanism for a tractor. Background Art

[0002] The power take-off mechanism of a tractor is the key part responsible for transmitting the power generated by the engine to the working device and travel system of the tractor. Its main function is to convert mechanical energy into a form that can be used for agricultural operations or other work.

[0003] In the prior art, the output can be driven by the meshing of gears, but the output is relatively loose and the stability is poor;

[0004] To overcome these shortcomings, a Chinese patent (publication number CN103182933A) discloses a power take-off device for an agricultural tractor, comprising a speed sensor, a hydraulic motor, a speed controller, an electromagnetic actuator, an electro-hydraulic servo valve, a hydraulic oil tank, a hydraulic pump, and an engine. This power take-off device for an agricultural tractor uses a speed controller to set the operating speed of the hydraulic motor and automatically and continuously adjusts its speed according to actual operating conditions, allowing the hydraulic motor to maintain the required constant operating speed. This allows it to adapt to agricultural implements with different speed requirements and has a wide range of applications. Furthermore, the hydraulic pump and hydraulic motor are connected by piping, which is equivalent to a flexible connection. This flexible location and diverse styles facilitate the layout and maintenance of the engine and even the entire tractor.

[0005] Although the existing technology can overcome the above-mentioned shortcomings, other problems still exist during its operation, such as: when the tractor outputs power, the speed adjustment is inconvenient, which is not conducive to the user to adjust the speed of the tractor, the use stability is poor, and the material cost consumed during manufacturing is high. Utility Model Content

[0006] The purpose of the utility model is to provide a three-speed power output mechanism for a tractor, so as to solve the problems raised in the above-mentioned background technology, namely, that the speed adjustment is inconvenient when the tractor power is output, it is not conducive to the user to adjust the speed of the tractor, the use stability is poor, and the material cost consumed during manufacturing is high.

[0007] To achieve the above object, the present invention provides the following technical solution: a three-speed power output mechanism for a tractor, comprising an input shaft and a gear 1 disposed on the left side of the input shaft surface, a gear 3 disposed at the middle end of the input shaft, and a gear 5 disposed on the right side of the input shaft;

[0008] An output shaft is provided at the lower end of the input shaft, and gear 2 is provided on the left side of the output shaft, gear 4 is provided at the middle end of the output shaft, and gear 6 is provided on the right side of the output shaft. An engaging sleeve and a seat are provided at the middle end of the output shaft, and the engaging sleeve and the seat are driven by the gear shift fork of the gear shift lever, and the power output speed of the tractor is adjusted by adjusting the engaging sleeve and the seat.

[0009] Furthermore, a bearing 1 is provided on the left side of the input shaft, a bearing 2 is provided on the right side of the input shaft, and a wet clutch is connected to the right end of the input shaft. A bearing 3 is provided on the left side of the output shaft, and a bearing 4 is provided on the right side of the output shaft. The transmission of the input shaft and the output shaft is stabilized by the sleeve arrangement of the bearings.

[0010] Furthermore, the gear two is arranged corresponding to the gear one, the gear four is arranged corresponding to the gear three, and the gear six is ​​arranged corresponding to the gear five.

[0011] Furthermore, a fixing part is fixedly installed on the lower end of the right side shell of the input shaft, and an oil storage tank is provided at the upper end of the fixing part, and a one-way guide pipe is installed through the lower end of the oil storage tank, a positioning tank is fixedly installed on the lower end of the fixing part, and a water bag is provided inside the positioning tank, and the water bag and the oil storage tank are connected through the one-way guide pipe, and a one-way valve is provided inside the one-way guide pipe.

[0012] Furthermore, a lifting and lowering pressure block is nested inside the positioning bin, and the bottom of the lifting and lowering pressure block is in a convex block shape, and a cam is fixedly installed on the right side of the output shaft, and the cam is corresponding to the bottom of the lifting and lowering pressure block.

[0013] Furthermore, return springs are fixedly installed on the left and right ends of the lifting and lowering pressure blocks, and the lower ends of the return springs are fixedly installed on the left and right upper ends of the positioning bin, and damping rods are installed through the left and right lower ends of the positioning bin, and the upper ends of the damping rods are fixedly installed on the left and right lower ends of the lifting and lowering pressure blocks, a connecting pipe is installed through the left side of the water bag, and a nozzle is provided on the left side of the connecting pipe, and the upper end of the nozzle is provided at the lower end of the wet clutch, and the output end of the nozzle is aligned with the sixth surface of the gear.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. An input shaft is provided to drive the output shaft. The input shaft drives the output shaft through gears. The compact structure can make the output mechanism transmission stable;

[0016] Furthermore, the mechanism has a compact structure and can achieve three-speed power output without changing gears, thus saving materials and costs and having a wider range of applications.

[0017] 2. The oil storage tank at the upper end of the fixing part adds a certain amount of lubricating oil to the inside of the water bag through the one-way guide pipe when in use. The rotation of the output shaft drives the cam to rotate, and the nozzle is aimed at the inside of gear six to spray the lubricating oil, which can achieve the effect of automatic lubrication and lubrication, and is convenient for the staff to use;

[0018] Furthermore, when the cam stops squeezing the lifting pressure block, the lifting pressure block is reset under the action of the reset spring, thereby achieving the effect of stable lifting of the lifting pressure block. Under the protection of buffering and shock absorption, the lifting pressure block is avoided from being damaged, thereby improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the power output of the utility model;

[0021] Figure 3 This is a schematic diagram of the front cross-sectional structure of the positioning bin of the utility model;

[0022] Figure 4 For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0023] Figure 5 This is a schematic diagram of the cam side cross-sectional structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the bottom view of the lifting and lowering pressure block of the utility model.

[0025] In the figure: 1. Input shaft; 2. Output shaft; 3. Gear 1; 4. Gear 2; 5. Gear 3; 6. Gear 4; 7. Gear 5; 8. Gear 6; 9. Wet clutch; 10. Engaging sleeve and seat; 11. Bearing 1; 12. Bearing 2; 13. Bearing 3; 14. Bearing 4; 15. Cam; 16. Fixing part; 17. Oil storage tank; 18. One-way guide pipe; 19. Positioning tank; 20. Water bag; 21. Lifting and lowering pressure block; 22. Return spring; 23. Damping rod; 24. Connecting pipe; 25. Nozzle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example 1: Figure 1、 Figure 2 and Figure 3 The technical solution shown in the figure, in order to solve the problems of unstable transmission and inconvenient speed adjustment of the device, discloses: an input shaft 1 and a gear 1 3 arranged on the left side of the surface of the input shaft 1, a gear 3 5 is arranged at the middle end of the input shaft 1, and a gear 5 7 is arranged on the right side of the input shaft 1, an output shaft 2 is arranged at the lower end of the input shaft 1, and a gear 2 4 is arranged on the left side of the output shaft 2, and a gear 4 6 is arranged at the middle end of the output shaft 2, and a gear 6 8 is arranged on the right side of the output shaft 2, and a meshing sleeve and a seat 10 are arranged at the middle end of the output shaft 2, and the meshing sleeve and the seat 10 are engaged by the gear lever. The shift fork is driven, and the power output speed of the tractor is adjusted by adjusting the engagement sleeve and seat 10. Bearing 1 11 is provided on the left side of input shaft 1, and bearing 2 12 is provided on the right side of input shaft 1. The right end of input shaft 1 is connected to a wet clutch 9. Bearing 3 13 is provided on the left side of output shaft 2, and bearing 4 14 is provided on the right side of output shaft 2. The arrangement of the bearings ensures stable transmission between input shaft 1 and output shaft 2. Gear 2 4 is provided correspondingly to gear 1 3, gear 4 6 is provided correspondingly to gear 3 5, and gear 6 8 is provided correspondingly to gear 5 7.

[0028] In the embodiment, an input shaft 1 is provided that can drive the output shaft 2. The input shaft 1 drives the output shaft 2 through the gear. The compact structural setting can make the transmission of the output mechanism stable and realize three-speed power output without changing the gear, saving materials and costs, and having a wider range of applications. When the meshing sleeve and the seat 10 move to the right, the transmission force is from the input shaft 1 to the gear five 7, the gear five 7 drives the gear six 8, and the gear six 8 drives the output shaft 2 to realize the transmission of the speed three. When the meshing sleeve and the seat 10 move to the left for the first gear, the transmission force is from the input shaft 1 to the gear three 5, the gear three 5 drives the gear four 6 to move, and the gear four 6 drives the output shaft 2 to output, realizing the transmission of the speed two. When the meshing sleeve and the seat 10 move to the left for the second gear, from the input shaft 1 to the gear one 3, the gear one 3 drives the gear two 4 to transmit, and the gear two 4 drives the output shaft 2 to output, realizing the transmission of the speed one.

[0029] Example 2: Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6The technical solution shown is based on implementation 2. In order to solve the problem of inconvenience in adding lubricating oil, it is disclosed that: a fixing part 16 is fixedly installed at the lower end of the right side housing of the input shaft 1, and an oil storage tank 17 is provided at the upper end of the fixing part 16, and a one-way guide pipe 18 is installed through the lower end of the oil storage tank 17, a positioning tank 19 is fixedly installed at the lower end of the fixing part 16, and a water bag 20 is provided inside the positioning tank 19, and the water bag 20 is connected to the oil storage tank 17 through the one-way guide pipe 18, and a one-way valve is provided inside the one-way guide pipe 18, a lifting and lowering block 21 is nested inside the positioning tank 19, and the bottom of the lifting and lowering block 21 is a convex block, and the output shaft 2 is fixedly installed with a cam 15, and the cam 15 is corresponding to the bottom of the lifting pressure block 21. The left and right ends of the lifting pressure block 21 are fixedly installed with return springs 22, and the lower ends of the return springs 22 are fixedly installed on the left and right upper ends of the positioning chamber 19, and the left and right lower ends of the positioning chamber 19 are penetrated by damping rods 23, and the upper ends of the damping rods 23 are fixedly installed on the left and right lower ends of the lifting pressure block 21. A connecting pipe 24 is penetrated on the left side of the water bag 20, and a nozzle 25 is provided on the left side of the connecting pipe 24, and the upper end of the nozzle 25 is provided at the lower end of the wet clutch 9, and the output end of the nozzle 25 is aligned with the surface of the gear six 8;

[0030] When the cam 15 stops squeezing the lifting and pressing block 21, the lifting and pressing block 21 is prevented from being damaged and the service life of the device is improved.

[0031] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-speed power output mechanism for a tractor, comprising an input shaft (1) and a gear one (3) provided on the left side of the surface of the input shaft (1), a gear three (5) provided at the middle end of the input shaft (1), and a gear five (7) provided on the right side of the input shaft (1); Its characteristics are: An output shaft (2) is provided at the lower end of the input shaft (1), and a gear 2 (4) is provided on the left side of the output shaft (2), and a gear 4 (6) is provided at the middle end of the output shaft (2), and a gear 6 (8) is provided on the right side of the output shaft (2). A meshing sleeve and a seat (10) are provided at the middle end of the output shaft (2), and the meshing sleeve and the seat (10) are driven by a shift lever shift fork, and the power output speed of the tractor is adjusted by adjusting the meshing sleeve and the seat (10).

2. A three-speed power take-off mechanism for a tractor according to claim 1, characterized in that: The left side of the input shaft (1) is provided with a bearing 1 (11), and the right side of the input shaft (1) is provided with a bearing 2 (12), and the right end of the input shaft (1) is connected to a wet clutch (9), the left side of the output shaft (2) is provided with a bearing 3 (13), and the right side of the output shaft (2) is provided with a bearing 4 (14), and the transmission of the input shaft (1) and the output shaft (2) is stable through the sleeve arrangement of the bearings.

3. The three-speed power take-off mechanism for a tractor according to claim 1, characterized in that: The gear two (4) is arranged correspondingly to the gear one (3), the gear four (6) is arranged correspondingly to the gear three (5), and the gear six (8) is arranged correspondingly to the gear five (7).

4. A three-speed power take-off mechanism for a tractor according to claim 1, characterized in that: A fixing member (16) is fixedly mounted on the lower end of the right side housing of the input shaft (1), and an oil storage tank (17) is provided at the upper end of the fixing member (16), and a one-way guide pipe (18) is installed through the lower end of the oil storage tank (17), a positioning tank (19) is fixedly mounted on the lower end of the fixing member (16), and a water bag (20) is provided inside the positioning tank (19), and the water bag (20) and the oil storage tank (17) are communicated through the one-way guide pipe (18), and a one-way valve is provided inside the one-way guide pipe (18).

5. A three-speed power take-off mechanism for a tractor according to claim 4, characterized in that: A lifting and lowering pressure block (21) is nested and installed inside the positioning chamber (19), and the bottom of the lifting and lowering pressure block (21) is in a convex block shape. A cam (15) is fixedly installed on the right side of the output shaft (2), and the cam (15) is correspondingly arranged to the bottom of the lifting and lowering pressure block (21).

6. A three-speed power take-off mechanism for a tractor according to claim 5, characterized in that: The left and right ends of the lifting and lowering pressure block (21) are fixedly installed with return springs (22), and the lower ends of the return springs (22) are fixedly installed on the left and right upper ends of the positioning chamber (19), and the left and right lower ends of the positioning chamber (19) are penetrated with damping rods (23), and the upper ends of the damping rods (23) are fixedly installed on the left and right lower ends of the lifting and lowering pressure block (21), and the left side of the water bag (20) is penetrated with a connecting pipe (24), and the left side of the connecting pipe (24) is provided with a nozzle (25), and the upper end of the nozzle (25) is provided at the lower end of the wet clutch (9), and the output end of the nozzle (25) is aligned with the surface of gear six (8).

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