Stepless speed regulation type mower drive axle assembly

Abstract

The utility model provides a stepless speed regulation type mower drive axle assembly. The mower gearbox solves the problem that an existing mower gearbox is inconvenient to use. The device comprises a shell arranged on a machine body, a generator, a brushless motor and a controller are fixedly arranged in the shell, the generator is connected with an engine on the machine body, an output gear is fixedly arranged on a main shaft of the brushless motor, a differential mechanism is rotatably arranged in the shell, and the controller is connected with the output gear. The two ends of the differential mechanism are each movably provided with an output shaft, when the differential mechanism is used, redundant power is supplied to a generator through an engine for power generation, then the redundant power is output through a brushless motor, advancing, retreating and stepless speed regulation are achieved, the structure is simple, the failure rate is low, energy is saved, and environment friendliness is achieved; when the resistance is too large and the brushless motor outputs too large torque, the clutch device enables the first gear to be separated from the second gear, so that idling of the second gear is achieved, and damage to equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a stepless speed regulation type lawn mower drive axle assembly. Background Art

[0002] With the increasing market share of ride-on lawn mowers, the core component gearbox is the most important part of the whole vehicle except the engine. Currently, there are two general types on the market. One is hydraulic stepless speed change, which has high cost, high precision, high maintenance cost and small load capacity. The other is manual speed change, which has a complex structure, cumbersome operation and is relatively inconvenient to use. There are areas for improvement in the prior art. Summary of the Invention

[0003] The device of the utility model aims at the above-mentioned existing situation and provides a stepless speed regulation type lawn mower drive axle assembly, which includes a housing fixedly arranged on the machine body. It is characterized in that a generator, a brushless motor and a controller are fixedly arranged in the housing. The generator is connected to the engine on the machine body. An output gear is fixedly arranged on the main shaft of the brushless motor. A differential is rotatably arranged in the housing. Output shafts are respectively movably arranged at both ends of the differential. A rotating shaft is movably arranged between the differential and the output gear. A first gear that is always meshed with the above-mentioned differential is fixedly arranged on the rotating shaft. A second gear that is always meshed with the above-mentioned output gear is rotatably arranged on the rotating shaft. The diameter of the second gear is larger than that of the first gear. A clutch device is arranged on the rotating shaft to make the second gear abut against the first gear and drive the first gear to rotate.

[0004] Preferably, the clutch device is a spring sleeved on the rotating shaft to drive the second gear to move towards the first gear. The second gear is located between the spring and the first gear. A first face gear is fixedly arranged on the end face of the first gear facing the second gear. A second face gear that is matched with the first face gear is fixedly arranged on the end face of the second gear facing the first gear.

[0005] Preferably, a retaining ring is fixedly arranged on the rotating shaft. The spring is located between the retaining ring and the second gear.

[0006] Preferably, a plain bearing is arranged on the side of the second gear facing the spring. One end of the plain bearing abuts against the second gear, and the other end of the plain bearing abuts against the spring.

[0007] Compared with the prior art, when in use, the utility model supplies the excess power to the generator for power generation through the engine, and then outputs through the brushless motor, realizing forward and backward movement and stepless speed regulation. It has a simple structure, low failure rate, energy conservation and environmental protection. And through the clutch device arranged on the rotating shaft, when the equipment encounters too much resistance during operation and the brushless motor outputs too large torque, the first gear and the second gear are disengaged through the clutch device to realize the idling of the second gear and avoid damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic structural diagram of the utility model;

[0009] Figure 2 is a schematic structural diagram at the rotating shaft;

[0010] Figure 3 is a schematic structural diagram of the second gear;

[0011] Figure 4 is a schematic structural diagram of the first gear.

[0012] Reference numerals in the drawings: 1, housing; 2, generator; 3, brushless motor; 4, controller; 5, main shaft; 6, output gear; 7, differential; 8, output shaft; 9, rotating shaft; 10, first gear; 11, second gear; 12, clutch device; 13, spring; 14, first face gear; 15, second face gear; 16, retaining ring; 17, plain bearing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following further describes the utility model in conjunction with the embodiments shown in the drawings:

[0014] As Figures 1-4 shown, a stepless speed regulation type mower drive axle assembly includes a housing 1 fixedly arranged on the machine body. A generator 2, a brushless motor 3 and a controller 4 are fixedly arranged in the housing 1. The generator 2 is connected to the engine on the machine body. An output gear 6 is fixedly arranged on the main shaft 5 of the brushless motor 3. A differential 7 is rotatably arranged in the housing 1. An output shaft 8 is movably arranged at both ends of the differential 7. A rotating shaft 9 is movably arranged between the differential 7 and the output gear 6. A first gear 10 that is always meshed with the differential 7 is fixedly arranged on the rotating shaft 9. A second gear 11 that is always meshed with the output gear 6 is rotatably arranged on the rotating shaft 9. The diameter of the second gear 11 is larger than that of the first gear 10. A clutch device 12 is arranged on the rotating shaft 9 to make the second gear 11 abut against the first gear 10 and drive the first gear 10 to rotate.

[0015] In use, after the engine supplies excess power to the generator 2 for power generation, it is output through the brushless motor 3 to achieve forward and reverse movement and stepless speed regulation. The structure is simple, the failure rate is low, it is energy-saving and environmentally friendly, and through the clutch device 12 arranged on the rotating shaft 9, when the equipment encounters excessive resistance during operation and the brushless motor 3 outputs excessive torque, the first gear 10 is disengaged from the second gear 11 through the clutch device 12 to achieve the idling of the second gear 11 and avoid damage to the equipment.

[0016] The clutch device 12 is sleeved on the rotating shaft 9 with a spring 13 that drives the second gear 11 to move towards the first gear 10. The second gear 11 is located between the spring 13 and the first gear 10. A first face gear 14 is fixedly arranged on the end face of the first gear 10 facing the second gear 11. A second face gear 15 that mates with the first face gear 14 is fixedly arranged on the end face of the second gear 11 facing the first gear 10. A retaining ring 16 is fixedly arranged on the rotating shaft 9, and the spring 13 is located between the retaining ring 16 and the second gear 11. A plain bearing 17 is arranged on the side of the second gear 11 facing the spring 13. One end of the plain bearing 17 abuts against the second gear 11, and the other end of the plain bearing 17 abuts against the spring 13. When the torque is excessive, the output gear 6 drives the second gear 11 to rotate, the first face gear 14 is disengaged from the second face gear 15, the spring 13 is compressed, the second gear 11 moves towards the spring 13, the output gear 6 drives the second gear 11 to idle, and the plain bearing 17 is used to prevent the spring 13 from directly rubbing against the second gear 11 during the idling of the second gear 11, further reducing wear.

[0017] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A stepless speed regulating lawn mower drive axle assembly, comprising a housing (1) fixedly mounted on a machine body, characterized in that: A generator (2), a brushless motor (3) and a controller (4) are fixedly arranged in the housing (1); the generator (2) is connected to the engine on the body; an output gear (6) is fixedly arranged on the main shaft (5) of the brushless motor (3); a differential (7) is rotatably arranged in the housing (1); an output shaft (8) is movably arranged at each end of the differential (7); a rotating shaft (9) is movably arranged between the differential (7) and the output gear (6); a first gear (10) which is always meshed with the differential (7) is fixedly arranged on the rotating shaft (9); a second gear (11) which is always meshed with the output gear (6) is rotatably arranged on the rotating shaft (9); the diameter of the second gear (11) is larger than the diameter of the first gear (10); and a clutch device (12) which makes the second gear (11) abut against the first gear (10) and drives the first gear (10) to rotate is arranged on the rotating shaft (9).

2. The stepless speed regulating lawn mower drive axle assembly according to claim 1, characterized in that: The clutch device (12) is sleeved on a spring (13) on the rotating shaft (9) for driving the second gear (11) to move in the direction of the first gear (10); the second gear (11) is located between the spring (13) and the first gear (10); a first face gear (14) is fixedly arranged on the end face of the first gear (10) facing the second gear (11); and a second face gear (15) matching the first face gear (14) is fixedly arranged on the end face of the second gear (11) facing the first gear (10).

3. The stepless speed regulating lawn mower drive axle assembly according to claim 1, characterized in that: A retaining ring (16) is fixedly disposed on the rotating shaft (9), and the spring (13) is located between the retaining ring (16) and the second gear (11).

4. The stepless speed regulating lawn mower drive axle assembly according to claim 3, characterized in that: A plane bearing (17) is provided on the side of the second gear (11) facing the spring (13), one end of the plane bearing (17) abuts against the second gear (11), and the other end of the plane bearing (17) abuts against the spring (13).

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