Corn silage machine drive axle

Abstract

The utility model relates to gear drive device technical field, concretely relates to a corn green storage machine drive axle, the utility model discloses drive axle that is symmetrically arranged, is provided with the following components on drive axle: differential lock assembly, is integrated on main drive assembly, including differential mechanism casing, and the internal engagement cover and outer engagement cover at differential mechanism casing, wheel side speed reducer assembly includes wheel side speed reducer, and the input end of wheel side speed reducer is connected with differential mechanism casing through half axle, the utility model is when normal driving, differential mechanism realizes both sides wheel differential rotation, turns flexibly, when one side wheel skids, differential lock assembly makes both sides wheel synchronous rotation, and the wheel side speed reducer is reduced and is increased in torsion, and the driving force is enhanced, makes the vehicle get out of the predicament, adapts complex road condition, and main speed reducer reduces the transmission shaft rotating speed, and increases the torque, and the power is reasonably distributed to differential mechanism casing, and the wheel side speed reducer is reduced and is increased in torsion, and the wheel side rotating speed is reduced, and the wheel wear is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gear transmission device technology, specifically to a drive axle for a corn silage harvester. Background Technology

[0002] Corn silage harvesters, as crucial pieces of agricultural machinery, play a key role in corn silage operations. The performance of their drive axles directly affects the machine's stability and operational efficiency. Currently, existing drive axles lack adequate regulation of the drive shaft's speed and torque during power transmission, failing to provide sufficient and appropriate driving force to the wheels according to different loads and road conditions. This makes it difficult for the vehicle to navigate complex road conditions, as exemplified by the rear drive axle assembly disclosed in Chinese Patent No. CN202703132U. Most current corn silage harvester drive axles do not have differential locks installed. While the differential allows the wheels on both sides to rotate at different speeds to adapt to turning during normal driving and turning, when one tire slips, a large amount of power flows to the slipping wheel, preventing the vehicle from moving normally. This severely impacts the continuity of operations and may even damage the equipment due to prolonged stagnation, limiting the corn silage harvester's operating range and efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a drive axle for a corn silage harvester.

[0004] The technical solution adopted in this utility model is as follows: A drive axle for a corn silage harvester includes symmetrically arranged drive axles, and the drive axles are provided with the following components: The main drive assembly, located in the middle front of the drive axle, includes a drive shaft for power input; The differential lock assembly, integrated into the main drive assembly, includes a differential housing, and an inner engagement sleeve and an outer engagement sleeve located in the differential housing. The inner engagement sleeve is connected to the differential housing via a spline, and the outer engagement sleeve is connected to the drive shaft via a spline. The inner and outer engagement sleeves mesh with each other, and power is transmitted from the drive shaft to the differential housing. The wheel-side reducer assembly is located at both ends of the drive axle. It includes the wheel-side reducer, the input end of which is connected to the differential housing via a half-shaft, and the output end of which is connected to the wheel of the corn silage harvester.

[0005] This technical solution achieves rational power distribution and transmission by installing a main drive assembly, a differential lock assembly, and wheel-side reducer assemblies on the drive axle. This allows the corn silage harvester to turn flexibly during normal operation and continue moving even when one tire slips, ensuring continuous operation. Specifically, the drive shaft of the main drive assembly inputs power. During normal operation, the planetary gear mechanism inside the differential housing operates, causing the two wheels to rotate at different speeds to adapt to turning and other working conditions. When one tire slips, the inner and outer engagement sleeves of the differential lock assembly engage under the action of a hydraulic cylinder, locking the drive shaft and differential housing together. Power is then transmitted without differential speed to the wheel-side reducers on both sides, and then drives the wheels through the half-shafts, allowing the vehicle to escape from difficult situations. The wheel-side reducers reduce speed and increase torque, enhancing the driving force of the wheels.

[0006] In addition, the drive axle of the corn silage harvester proposed above according to this utility model may also have the following additional technical features: According to one embodiment of this utility model, the differential lock assembly further includes a hydraulic cylinder connected to an inner engagement sleeve and an outer engagement sleeve. When one wheel slips, the hydraulic cylinder actuates to engage the inner and outer engagement sleeves, causing the differential housing and drive shaft to rotate synchronously. The hydraulic cylinder is connected to the hydraulic system of the corn silage harvester via hydraulic lines, and the hydraulic system provides power to the hydraulic cylinder to achieve the engagement and disengagement of the inner and outer engagement sleeves.

[0007] In this technical solution, when the corn silage harvester is in operation, under normal conditions, the differential allows the wheels on both sides to rotate at different speeds to adapt to situations such as turning. When one wheel slips, under normal conditions, a large amount of power will flow to the slipping wheel, causing the vehicle to be unable to move normally. However, the hydraulic cylinder in the differential lock assembly comes into play. Power is provided by the hydraulic system of the corn silage harvester. The hydraulic cylinder actuates to push the inner and outer engagement sleeves to engage with each other, connecting the differential housing and the drive shaft as one unit. This cuts off the power distribution to the slipping wheel, allowing power to be transmitted synchronously to both wheels, enabling the vehicle to get out of the slippage predicament and restore normal driving ability.

[0008] According to one embodiment of the present invention, the main drive assembly further includes a main reducer disposed between the drive shaft and the differential housing. The main reducer is used to reduce the rotational speed of the drive shaft and increase the torque, and then transmit the power to the differential housing. The main reducer includes a drive gear and a driven gear. The drive gear is connected to the drive shaft, and the driven gear is connected to the differential housing. The drive gear and the driven gear mesh with each other to achieve the function of speed reduction and torque increase.

[0009] In this technical solution, when the corn silage harvester is working, power is input from the drive shaft. The main reducer in the main drive assembly plays a role, with its driving gear connected to the drive shaft and its driven gear connected to the differential housing. The driving gear rotates with the drive shaft. Due to the meshing of the driving and driven gears, the driving gear drives the driven gear to rotate, achieving speed reduction and torque increase. After being processed by the main reducer, the power is transmitted to the differential housing at a suitable speed and with greater torque. The power is then distributed to the wheels on both sides through the differential housing, enabling the vehicle to obtain sufficient driving force to adapt to different loads and road conditions.

[0010] According to one embodiment of this utility model, a planetary gear mechanism is provided inside the differential housing. When the corn silage harvester is running normally, the planetary gear mechanism causes the two half-shafts to rotate at different speeds, realizing the differential function. When the inner and outer meshing sleeves are engaged, the planetary gear mechanism is locked, and the two half-shafts rotate synchronously, realizing differential-free operation. The planetary gear mechanism includes planetary gears, a planet carrier, and a sun gear. The planetary gears are mounted on the planet carrier and mesh with the sun gear and the internal gear ring on the differential housing, respectively. The differential function is realized through the rotation of the planetary gears.

[0011] In this technical solution, when the corn silage harvester is in motion, power is transmitted to the differential housing. Under normal driving and turning conditions, the differential housing drives the internal gear ring to rotate. The planetary gears, constrained by the planet carrier, both rotate around their own axis and revolve around the sun gear. Because the planetary gears mesh with the sun gear and the internal gear ring, a speed difference is generated between the two half-shafts, realizing the differential function and allowing the inner and outer wheels to rotate at different speeds. When the inner and outer meshing sleeves mesh, the differential housing and the drive shaft are synchronized, the planetary gears are locked and cannot rotate or revolve, and the two half-shafts rotate synchronously, realizing differential-free operation, so that the vehicle can obtain stable driving force in special situations such as slippage.

[0012] According to one embodiment of the present invention, the wheel-side reducer is a planetary wheel-side reducer, including a wheel-side sun gear, a wheel-side planetary gear, a wheel-side planetary carrier, and a wheel-side internal gear ring. The wheel-side sun gear is connected to the half-shaft, the wheel-side planetary gear is mounted on the wheel-side planetary carrier, and the wheel-side planetary gear meshes with the wheel-side sun gear and the wheel-side internal gear ring respectively. The wheel-side planetary carrier is connected to the wheel.

[0013] In this technical solution, when the corn silage harvester is working, power is transmitted from the half-shaft to the sun gear on the wheel rim. The rotation of the sun gear drives the planetary gear meshing with it. Since the planetary gear is mounted on the planetary carrier and meshes with the internal gear ring, according to the principle of planetary gear transmission, the planetary gear rotates on its own axis while also revolving around the sun gear, thus driving the planetary carrier to rotate. The planetary carrier is connected to the wheel, ultimately transmitting power to the wheel, causing it to rotate.

[0014] Compared with the prior art, this utility model has the following advantages: (1) During normal driving, the differential enables the wheels on both sides to rotate at different speeds, making turning flexible; when one wheel slips, the differential lock assembly makes the wheels on both sides rotate synchronously, and works with the wheel-side reducer to reduce speed and increase torque, thereby enhancing driving force, allowing the vehicle to get out of trouble and adapt to complex road conditions.

[0015] (2) The main reducer reduces the speed of the drive shaft and increases the torque, and reasonably distributes the power to the differential housing; the wheel-side reducer reduces speed and increases torque, reduces wheel-side speed, and reduces wheel wear. Attached Figure Description

[0016] Figure 1 This is the front view of this utility model.

[0017] Figure 2 This is a top view of the present invention.

[0018] In the diagram: 1. Main drive assembly; 2. Differential lock assembly; 3. Wheel-side reducer assembly. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1 like Figure 1 and Figure 2 As shown, this embodiment provides a drive axle for a corn silage harvester, including symmetrically arranged drive axles, and the drive axles are provided with the following components: The main drive assembly 1, located at the middle front side of the drive axle, includes a drive shaft for power input; The differential lock assembly 2 is integrated on the main drive assembly 1. It includes a differential housing, and an inner engagement sleeve and an outer engagement sleeve located in the differential housing. The inner engagement sleeve is connected to the differential housing via a spline, and the outer engagement sleeve is connected to the drive shaft via a spline. The inner engagement sleeve and the outer engagement sleeve mesh with each other, and power is transmitted from the drive shaft to the differential housing. The wheel-side reducer assembly 3 is located at both ends of the drive axle and includes a wheel-side reducer. The input end of the wheel-side reducer is connected to the differential housing through a half-shaft, and the output end of the wheel-side reducer is connected to the wheel of the corn silage harvester.

[0021] like Figure 1 and Figure 2As shown, this technical solution achieves reasonable power distribution and transmission by setting up a main drive assembly 1, a differential lock assembly 2, and a wheel-side reducer assembly 3 on the drive axle. This allows the corn silage harvester to turn flexibly during normal operation and continue moving even when one tire slips, ensuring the continuity of operation. Specifically, the drive shaft of the main drive assembly 1 receives power. During normal operation, the planetary gear mechanism inside the differential housing operates, causing the two wheels to rotate at different speeds to adapt to turning and other working conditions. When one tire slips, the inner and outer engagement sleeves of the differential lock assembly 2 engage under the action of a hydraulic cylinder, locking the drive shaft and differential housing together. Power is transmitted without differential speed to the wheel-side reducers on both sides, and then drives the wheels through the half-shafts, allowing the vehicle to get out of trouble. The wheel-side reducers reduce speed and increase torque, enhancing the driving force of the wheels.

[0022] In addition, the drive axle of the corn silage harvester proposed above according to this utility model may also have the following additional technical features: According to one embodiment of this utility model, the differential lock assembly 2 further includes a hydraulic cylinder connected to an inner engagement sleeve and an outer engagement sleeve. When one wheel slips, the hydraulic cylinder actuates to engage the inner and outer engagement sleeves, causing the differential housing and drive shaft to rotate synchronously. The hydraulic cylinder is connected to the hydraulic system of the corn silage harvester via hydraulic lines, and the hydraulic system provides power to the hydraulic cylinder to achieve the engagement and disengagement of the inner and outer engagement sleeves.

[0023] In this technical solution, when the corn silage harvester is in operation, under normal conditions, the differential allows the wheels on both sides to rotate at different speeds to adapt to situations such as turning. When one wheel slips, under normal conditions, a large amount of power will flow to the slipping wheel, causing the vehicle to be unable to move normally. However, the hydraulic cylinder in the differential lock assembly 2 comes into play. Power is provided by the hydraulic system of the corn silage harvester. The hydraulic cylinder actuates to push the inner and outer meshing sleeves to mesh with each other, connecting the differential housing and the drive shaft as one unit, cutting off the power distribution to the slipping wheel, and allowing power to be transmitted synchronously to both wheels, allowing the vehicle to get out of the slipping predicament and restore normal driving ability.

[0024] According to one embodiment of the present invention, the main drive assembly 1 further includes a main reducer disposed between the drive shaft and the differential housing. The main reducer is used to reduce the rotational speed of the drive shaft and increase the torque, and then transmit the power to the differential housing. The main reducer includes a driving gear and a driven gear. The driving gear is connected to the drive shaft, and the driven gear is connected to the differential housing. The driving gear and the driven gear mesh with each other to achieve the function of speed reduction and torque increase.

[0025] In this technical solution, when the corn silage harvester is working, power is input from the drive shaft. The main reducer in the main drive assembly 1 plays a role, with its driving gear connected to the drive shaft and its driven gear connected to the differential housing. The driving gear rotates with the drive shaft. Since the driving gear and driven gear mesh with each other, the driving gear drives the driven gear to rotate, achieving speed reduction and torque increase. After being processed by the main reducer, the power is transmitted to the differential housing at a suitable speed and with greater torque. Then, through the differential housing, it is distributed to the wheels on both sides, enabling the vehicle to obtain sufficient driving force to adapt to different loads and road conditions.

[0026] According to one embodiment of this utility model, a planetary gear mechanism is provided inside the differential housing. When the corn silage harvester is running normally, the planetary gear mechanism causes the two half-shafts to rotate at different speeds, realizing the differential function. When the inner and outer meshing sleeves are engaged, the planetary gear mechanism is locked, and the two half-shafts rotate synchronously, realizing differential-free operation. The planetary gear mechanism includes planetary gears, a planet carrier, and a sun gear. The planetary gears are mounted on the planet carrier and mesh with the sun gear and the internal gear ring on the differential housing, respectively. The differential function is realized through the rotation of the planetary gears.

[0027] In this technical solution, when the corn silage harvester is in motion, power is transmitted to the differential housing. Under normal driving and turning conditions, the differential housing drives the internal gear ring to rotate. The planetary gears, constrained by the planet carrier, both rotate around their own axis and revolve around the sun gear. Because the planetary gears mesh with the sun gear and the internal gear ring, a speed difference is generated between the two half-shafts, realizing the differential function and allowing the inner and outer wheels to rotate at different speeds. When the inner and outer meshing sleeves mesh, the differential housing and the drive shaft are synchronized, the planetary gears are locked and cannot rotate or revolve, and the two half-shafts rotate synchronously, realizing differential-free operation, so that the vehicle can obtain stable driving force in special situations such as slippage.

[0028] According to one embodiment of the present invention, the wheel-side reducer is a planetary wheel-side reducer, including a wheel-side sun gear, a wheel-side planetary gear, a wheel-side planetary carrier, and a wheel-side internal gear ring. The wheel-side sun gear is connected to the half-shaft, the wheel-side planetary gear is mounted on the wheel-side planetary carrier, and the wheel-side planetary gear meshes with the wheel-side sun gear and the wheel-side internal gear ring respectively. The wheel-side planetary carrier is connected to the wheel.

[0029] In this technical solution, when the corn silage harvester is working, power is transmitted from the half-shaft to the sun gear on the wheel rim. The rotation of the sun gear drives the planetary gear meshing with it. Since the planetary gear is mounted on the planetary carrier and meshes with the internal gear ring, according to the principle of planetary gear transmission, the planetary gear rotates on its own axis while also revolving around the sun gear, thus driving the planetary carrier to rotate. The planetary carrier is connected to the wheel, ultimately transmitting power to the wheel, causing it to rotate.

[0030] The usage process of the above embodiments is as follows: like Figure 1 and Figure 2 As shown, when the corn silage harvester is working, power is input to the main transmission assembly 1 from the drive shaft; the driving gear of the main reducer rotates with the drive shaft, driving the driven gear to achieve speed reduction and torque increase, and transmitting power to the differential housing; during normal driving, the differential housing drives the internal gear ring to rotate, and the planetary gears, constrained by the planetary carrier, both rotate on their own axis and revolve around the sun, creating a speed difference between the two half-shafts, allowing the vehicle to turn flexibly; when one wheel slips, the hydraulic system provides power to the hydraulic cylinder, pushing the inner and outer meshing sleeves to engage, synchronizing the differential housing with the drive shaft, locking the planetary gears, and causing the two half-shafts to rotate synchronously, cutting off the power to the slipping wheel and synchronizing the power to both sides; the power is transmitted through the half-shaft to the wheel-side sun gear of the wheel-side reducer, driving the wheel-side planetary gears to rotate, which in turn drives the wheel-side planetary carrier to rotate, ultimately transmitting power to the wheels, and the wheel-side reducer reduces speed and increases torque, enhancing the wheel driving force and ensuring stable vehicle driving.

[0031] Although the present invention has been described in detail with reference to the accompanying drawings and preferred embodiments, it is not limited thereto. Various equivalent modifications or substitutions can be made to the embodiments of the present invention by those skilled in the art without departing from the spirit and essence of the present invention, and such modifications or substitutions should all be within the scope of the present invention. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should also be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A drive axle for a corn silage harvester, characterized in that, The drive axles are symmetrically arranged, and the drive axles are equipped with the following components: The main drive assembly (1), located at the middle front side of the drive axle, includes a drive shaft for power input; The differential lock assembly (2) is integrated on the main drive assembly (1) and includes a differential housing, and an inner engagement sleeve and an outer engagement sleeve located in the differential housing. The inner engagement sleeve is connected to the differential housing by a spline, and the outer engagement sleeve is connected to the drive shaft by a spline. The inner engagement sleeve and the outer engagement sleeve mesh with each other, and power is transmitted from the drive shaft to the differential housing. The wheel-side reducer assembly (3) is located at both ends of the drive axle and includes a wheel-side reducer. The input end of the wheel-side reducer is connected to the differential housing through a half shaft, and the output end of the wheel-side reducer is connected to the wheel of the corn silage harvester.

2. The drive axle for a corn silage harvester as described in claim 1, characterized in that, The differential lock assembly (2) also includes a hydraulic cylinder, which is connected to the inner engagement sleeve and the outer engagement sleeve. When one wheel slips, the hydraulic cylinder moves to make the inner engagement sleeve and the outer engagement sleeve engage with each other, and the differential housing and the drive shaft rotate synchronously.

3. The drive axle for a corn silage harvester as described in claim 2, characterized in that, The hydraulic cylinder is connected to the hydraulic system of the corn silage machine through hydraulic pipelines. The hydraulic system provides power to the hydraulic cylinder to realize the engagement and disengagement of the inner and outer engagement sleeves.

4. The drive axle for a corn silage harvester as described in claim 1, characterized in that, The main drive assembly (1) also includes a main reducer disposed between the drive shaft and the differential housing. The main reducer is used to reduce the speed of the drive shaft and increase the torque, and then transmit the power to the differential housing.

5. The drive axle for a corn silage harvester as described in claim 4, characterized in that, The main reducer includes a driving gear and a driven gear. The driving gear is connected to the drive shaft, and the driven gear is connected to the differential housing. The driving gear and the driven gear mesh with each other to achieve the function of speed reduction and torque increase.

6. The drive axle of the corn silage harvester as described in claim 1, characterized in that, The differential housing is equipped with a planetary gear mechanism. When the corn silage harvester is running normally, the planetary gear mechanism causes the two half-shafts to rotate at different speeds, thus achieving differential function. When the inner and outer meshing sleeves are engaged, the planetary gear mechanism is locked, and the two half-shafts rotate synchronously, thus achieving differential-free operation.

7. The drive axle for a corn silage harvester as described in claim 6, characterized in that, The planetary gear mechanism includes planetary gears, a planetary carrier, and a sun gear. The planetary gears are mounted on the planetary carrier and mesh with the sun gear and the internal gear ring on the differential housing, respectively. The differential function is achieved by the rotation of the planetary gears.

8. The drive axle for a corn silage harvester as described in claim 1, characterized in that, The wheel-side reducer is a planetary wheel-side reducer, including a wheel-side sun gear, a wheel-side planetary gear, a wheel-side planetary carrier, and a wheel-side internal gear ring. The wheel-side sun gear is connected to the half-shaft, the wheel-side planetary gear is mounted on the wheel-side planetary carrier, and the wheel-side planetary gear meshes with the wheel-side sun gear and the wheel-side internal gear ring respectively. The wheel-side planetary carrier is connected to the wheel.

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