Drive axle for agricultural machinery

Abstract

The utility model discloses a drive axle for agricultural machinery, and belongs to the technical field of agricultural machinery. A drive axle for agricultural machinery comprises a shaft A, a shaft B and a shaft C, the shaft A is a power input shaft and is fixedly connected with a first gear; the shaft B is rotationally connected with a second gear, the second gear is in meshed connection with the first gear, a clutch is fixedly installed on the shaft B, the second gear is in clutch connection with the shaft B through the clutch, and a third gear is fixedly installed on the shaft B; the shaft C is a power output shaft, and a fourth gear is installed on the shaft C and connected with the third gear in a meshed mode. By installing the clutch on the shaft B, when the device is used as a driven axle, the shaft B is controlled to be separated from the second gear through the clutch, so that power transmitted by tires is not transmitted to the front end any more, the rotating speed of the shaft A and the motor or the motor basically tends to zero, and noise, vibration and temperature rise are effectively controlled.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural machinery, and more specifically, to a drive axle for agricultural machinery. Background Art

[0002] The power transmission system of domestic agricultural machinery basically adopts the route of engine + gearbox + drive axle. The transmission route is long and requires a large space when arranging the whole vehicle. In order to obtain the appropriate vehicle speed and power, frequent gear shifting is required, which leads to gear shifting shock, thereby reducing driving comfort.

[0003] After searching, the existing patent document with publication number CN201231678Y provides a drive axle for a corn combine harvester. When the device is working in the field, if it encounters embankments, ditches, bad road conditions or large changes in the density of crops, it is not necessary to frequently change the travel gear. It only needs to operate the handle on the harvester to properly adjust the continuously variable transmission mechanism to meet the appropriate feeding amount. When walking on the road, the travel speed can also be changed by operating the continuously variable transmission handle. This effectively reduces the labor intensity of the harvester operator and improves the humanization and comfort of the whole machine operation.

[0004] However, when the drive axle is used as a driven axle, there is no power release device inside the drive axle, so the tires drag the transmission system to rotate, resulting in adverse effects such as reduced efficiency, high noise, high vibration, and increased temperature.

[0005] In view of this, we propose a drive axle for agricultural machinery. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the present application is to provide a drive axle for agricultural machinery to solve the problems raised in the above-mentioned background technology.

[0008] 2. Technical solution

[0009] This application is implemented through the following technical solutions:

[0010] A driving axle for agricultural machinery, comprising an axis A, an axis B and an axis C;

[0011] The shaft A is a power input shaft, and a first gear is fixedly connected to the shaft A;

[0012] The shaft B is rotatably connected with a second gear, the second gear is meshed with the first gear, a clutch is fixedly mounted on the shaft B, the second gear is clutched with the shaft B through the clutch, and a third gear is fixedly mounted on the shaft B;

[0013] The shaft C is a power output shaft, and a fourth gear is mounted on the shaft C. The fourth gear is meshed and connected with the third gear.

[0014] As an optional solution to the technical solution of the present application document, a speed limiter is installed on the shaft B, and the speed limiter is connected to the shaft B in a clutch.

[0015] As an optional solution of the technical solution of this application document, the speed limiter includes a brake wheel, a rocker arm, a friction plate and a brake disc;

[0016] The brake wheel is rotatably mounted on shaft B, the brake wheel is clutch-connected to shaft B, the rocker arm is rotatably connected to the brake wheel, the rocker arm and the brake wheel are elastically connected via an elastic element, the friction plate is fixedly mounted on the movable end of the rocker arm, the friction plate is in frictional contact with the brake disc, and the brake disc is rotatably connected to shaft B.

[0017] As an optional solution of the technical solution of this application document, the clutch is a double clutch, and the shaft B is connected to the brake wheel through a clutch.

[0018] As an optional solution of the technical solution of the present application document, the shaft C includes a left half shaft, a right half shaft and a differential, the left half shaft and the right half shaft are connected through the differential, and the differential is fixedly connected to the fourth gear.

[0019] As an optional solution of the technical solution of the present application document, wheel-side reduction gear sets are installed on both the left half shaft and the right half shaft.

[0020] As an optional solution of the technical solution of the present application document, the wheel-side reduction gear set includes a sun gear, a planetary gear, a planetary gear carrier and an inner ring gear, the sun gear is fixedly connected to the left half shaft or the right half shaft, the planetary gear is meshingly connected to the sun gear, the planetary gear is meshingly connected to the inner ring gear, and the planetary gear carrier is rotatably connected to the planetary gear.

[0021] 3. Beneficial effects

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] 1. The present application installs a clutch on shaft B. When the present device is used as a driven bridge, the clutch controls shaft B to separate from the second gear, so that the power transmitted by the tire is no longer transmitted to the front end, and the rotation speed of shaft A and the motor or motor basically approaches 0, so that noise, vibration and temperature rise are effectively controlled.

[0024] 2. The present application realizes the clutch control of shaft B and the brake wheel by utilizing a clutch. When the clutch controls shaft B to separate from the second gear, shaft B is combined with the brake wheel. When the rotation speed of shaft B is too fast, the rocker arm is acted upon by centrifugal force to overcome the traction force of the elastic element. At this time, the friction plate is combined with the brake disc to increase the resistance to the rotation of shaft B, thereby preventing the tire from rotating too fast and increasing the difficulty of controlling the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a drive axle for agricultural machinery;

[0026] Figure 2 It is an enlarged schematic diagram of the structure at point A of a drive axle for agricultural machinery;

[0027] In the figure: 1. Shaft A; 101. First gear; 2. Shaft B; 201. Second gear; 202. Third gear; 3. Shaft C; 301. Left half shaft; 302. Right half shaft; 303. Differential; 304. Fourth gear; 4. Clutch; 5. Speed ​​limiter; 501. Brake wheel; 502. Rocker arm; 503. Friction plate; 504. Brake disc; 505. Elastic element; 6. Wheel-side reduction gear set. DETAILED DESCRIPTION

[0028] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.

[0029] See also Figure 1 and Figure 2 ,The present application provides a drive axle for agricultural machinery, including an axis A1, an axis B2 and an axis C3;

[0030] The shaft A1 is a power input shaft, and a first gear 101 is fixedly connected to the shaft A1;

[0031] The shaft B2 is rotatably connected with a second gear 201, which is meshed with the first gear 101. The shaft B2 is fixedly mounted with a clutch 4, through which the second gear 201 is clutched with the shaft B2. The shaft B2 is fixedly mounted with a third gear 202.

[0032] The shaft C3 is a power output shaft. A fourth gear 304 is mounted on the shaft C3 . The fourth gear 304 is meshed and connected with the third gear 202 .

[0033] As a preferred embodiment of the present application, a speed limiter 5 is installed on the shaft B2, and the speed limiter 5 is clutch-connected with the shaft B2.

[0034] As a preferred embodiment of the present application, the speed limiter 5 includes a brake wheel 501, a rocker arm 502, a friction plate 503 and a brake disc 504;

[0035] The brake wheel 501 is rotatably mounted on the shaft B2, the brake wheel 501 is clutch-connected to the shaft B2, the rocker arm 502 is rotatably connected to the brake wheel 501, the rocker arm 502 and the brake wheel 501 are elastically connected via an elastic element 505, the friction plate 503 is fixedly mounted on the movable end of the rocker arm 502, the friction plate 503 is in frictional contact with the brake disc 504, and the brake disc 504 is rotatably connected to the shaft B2.

[0036] As a preferred embodiment of the present application, the clutch 4 is a double clutch, and the shaft B2 is connected to the brake wheel 501 through the clutch 4.

[0037] As a preferred embodiment of the present application, the shaft C3 includes a left half shaft 301 , a right half shaft 302 and a differential 303 . The left half shaft 301 and the right half shaft 302 are connected via the differential 303 , and the differential 303 is fixedly connected to the fourth gear 304 .

[0038] As a preferred embodiment of the present application, a wheel-side reduction gear set 6 is installed on both the left half shaft 301 and the right half shaft 302 .

[0039] As a preferred embodiment of the present application, the wheel-side reduction gear set 6 includes a sun gear, a planetary gear, a planetary gear carrier and an inner ring gear. The sun gear is fixedly connected to the left half shaft 301 or the right half shaft 302, the planetary gears are meshingly connected to the sun gear, the planetary gears are meshingly connected to the inner ring gear, and the planetary gear carrier is rotatably connected to the planetary gears.

[0040] Working principle: The power of the device is output by the motor or motor through the shaft A1, through the first gear 101, the second gear 201, the third gear 202, the fourth gear 304, the differential 303, the left half shaft 301 and the right half shaft 302, the wheel side reduction gear set 6, and finally output by the planetary wheel carrier.

[0041] The first gear 101 is connected to the shaft A1 or is made into an integral gear shaft; the third gear 202 is connected to the shaft B2 or is made into an integral gear shaft; a bearing is provided between the second gear 201 and the shaft B2, and the two can rotate relative to each other. At the same time, a clutch 4 is provided on the shaft B2, and the clutch 4 controls the separation or combination of the second gear 201 and the shaft B2; the third gear 202 is connected to the differential 303 case; one end of the left half shaft 301 and the right half shaft 302 is connected to the half shaft bevel gear in the differential 303, and the other end is connected to the sun gear in the wheel side reduction gear set 6 or is made into an integral gear shaft; in the wheel side reduction gear NGW type, the inner ring gear is fixed, the sun gear is used as input, and the planetary gear is used as output.

[0042] When used as a drive axle, the clutch 4 is controlled to make the second gear 201 engage with the shaft B2 and the brake wheel 501 separate from the shaft B2. The power is input from the input end and finally transmitted to the output end.

[0043] When used as a driven bridge, the clutch 4 is controlled to separate the second gear 201 from the shaft B2 and the brake wheel 501 from the shaft B2. At this time, no power is input to the input end. When the vehicle is running, the tires drag the wheel-side reduction gear set 6 to rotate, and the power is transmitted in reverse to the left half shaft 301 and the right half shaft 302, the differential 303, the fourth gear 304, the third gear 202, and the shaft B2. Because the second gear 201 is separated from the shaft B2, the power is no longer transmitted to the front end, and the speed of the shaft A1 and the motor or motor is basically close to 0, so that the noise, vibration and temperature rise are reduced. Effective control; at this time, the shaft B2 is combined with the brake wheel 501, and the brake wheel 501 rotates with the shaft B2. The rocker arm 502 rotating on the brake wheel 501 is pulled by the elastic element 505, so that the friction plate 503 is separated from the brake disc 504, and the rotation of the shaft B2 will not be hindered; however, when the rotation speed of the shaft B2 is too fast, the rocker arm 502 is affected by the centrifugal force to overcome the traction force of the elastic element 505. At this time, the friction plate 503 is combined with the brake disc 504, which increases the resistance to the rotation of the shaft B2, avoids the tire rotating too fast, and increases the difficulty of controlling the vehicle.

Claims

1. A drive axle for agricultural machinery, characterized in that: It includes an axis A (1), an axis B (2) and an axis C (3); The shaft A (1) is a power input shaft, and a first gear (101) is fixedly connected to the shaft A (1); A second gear (201) is rotatably connected to the shaft B (2), the second gear (201) is meshedly connected to the first gear (101), a clutch (4) is fixedly mounted on the shaft B (2), the second gear (201) is clutched and connected to the shaft B (2) via the clutch (4), and a third gear (202) is fixedly mounted on the shaft B (2); The shaft C (3) is a power output shaft, and a fourth gear (304) is mounted on the shaft C (3), and the fourth gear (304) is meshedly connected with the third gear (202).

2. The drive axle for agricultural machinery according to claim 1, characterized in that: A speed limiter (5) is installed on the shaft B (2), and the speed limiter (5) is clutch-connected with the shaft B (2).

3. The driving axle for agricultural machinery according to claim 2, characterized in that: The speed limiter (5) comprises a brake wheel (501), a rocker arm (502), a friction plate (503) and a brake disc (504); The brake wheel (501) is rotatably mounted on the shaft B (2), the brake wheel (501) is clutch-connected to the shaft B (2), the rocker arm (502) is rotatably connected to the brake wheel (501), the rocker arm (502) and the brake wheel (501) are elastically connected via an elastic element (505), the friction plate (503) is fixedly mounted on the movable end of the rocker arm (502), the friction plate (503) is in frictional contact with a brake disc (504), and the brake disc (504) is rotatably connected to the shaft B (2).

4. The driving axle for agricultural machinery according to claim 3, characterized in that: The clutch (4) is a double clutch, and the shaft B (2) is connected to the brake wheel (501) through the clutch (4).

5. The driving axle for agricultural machinery according to claim 1, characterized in that: The shaft C (3) comprises a left half shaft (301), a right half shaft (302) and a differential (303); the left half shaft (301) and the right half shaft (302) are connected via the differential (303); and the differential (303) is fixedly connected to a fourth gear (304).

6. The driving axle for agricultural machinery according to claim 5, characterized in that: Wheel-side reduction gear sets (6) are installed on both the left half shaft (301) and the right half shaft (302).

7. The driving axle for agricultural machinery according to claim 6, characterized in that: The wheel-side reduction gear set (6) comprises a sun gear, planetary gears, a planetary gear carrier and an inner gear ring, wherein the sun gear is fixedly connected to the left half shaft (301) or the right half shaft (302), the planetary gears are meshingly connected to the sun gear, the planetary gears are meshingly connected to the inner gear ring, and the planetary gear carrier is rotatably connected to the planetary gears.

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