Half-shaft driving shell of rear axle of tractor

Abstract

The utility model relates to the technical field of half-shaft driving shell assembly, and discloses a tractor rear axle half-shaft driving shell which comprises a half-shaft driving shell body, a cover plate, four connecting plates and two fixing blocks, and the cover plate is located at the top of the half-shaft driving shell body. The two fixing blocks are located on the front side and the rear side of the half-shaft driving shell correspondingly and fixedly connected with the surface of the half-shaft driving shell, and the four connecting plates are located on the left side and the right side of the front side and the rear side of the bottom of the cover plate correspondingly and fixedly connected with the bottom of the cover plate. The problems that after a plurality of parts of the half-shaft driving shell are assembled, the top of the half-shaft driving shell needs to be sealed through a cover plate, and the cover plate and the top of the half-shaft driving shell are assembled and connected through a plurality of connecting pieces and fixing pieces, so that it is inconvenient for a user to assemble and connect the cover plate and the half-shaft driving shell are solved. And the maintenance convenience of a plurality of parts in the inner cavity of the half shaft driving shell is reduced, so that the use by a user is inconvenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of half - shaft drive housing assembly, and particularly relates to a half - shaft drive housing of a tractor rear axle. Background Technique

[0002] The half - shaft drive housing of a tractor rear axle, also known as the drive axle housing, is an important part of the tractor rear axle. The drive axle housing is the core structure of the tractor rear axle, playing the role of supporting and protecting key components such as the central transmission, differential, final drive, and half - shaft. It bears the overall weight of the tractor and transmits the road surface reaction force and reaction torque transmitted from the wheels. As one of the core components of the tractor, one of the main functions of the drive axle housing is to transmit loads, ensuring that the tractor can work stably and effectively under various working conditions. The drive axle housing is also the assembly matrix for components such as the main reducer, differential, and half - shaft, providing a stable installation platform for these components. In addition, according to different manufacturing processes, the drive axle housing can be divided into two types: stamping - welding bridge housing and casting (cast iron, cast steel) bridge housing. The traditional casting bridge housing has the advantages of high stiffness, small deformation, and low cost, but has a long manufacturing cycle, complex process, and low efficiency. The stamping - welding bridge housing has the advantages of good appearance, light weight, high cleanliness, and low failure rate, and has gradually become the mainstream technology in modern tractor manufacturing. Inside the half - shaft drive housing of a tractor rear axle, key components such as a differential are usually installed, and these components work together to ensure that the tractor can maintain good performance and stability under complex and changeable working conditions.

[0003] The half-axle drive housing of a tractor plays an important role in the tractor. The half-axle drive housing of the rear axle supports and protects key components in the tractor's transmission system, such as the central drive, differential, final drive, and half-axle. These components are crucial for the normal operation of the tractor, so the protective role of the housing cannot be ignored. When the tractor is working, it needs to withstand various complex and harsh road conditions. The half-axle drive housing of the rear axle can effectively transmit these loads, ensuring the stable operation of the tractor under various working conditions. The main reducer housing and the half-axle housing are connected by bolts and positioning pins. The installation position of the main reducer housing above the half-axle can be changed to adjust the ground clearance of the tractor and the axle distance between the left and right wheels. This enables the tractor to better adapt to different working environments and requirements. Self-tightening oil seals are installed on the half-axle drive housing of the rear axle. These oil seals can effectively prevent the lubricating oil in the main reducer from entering the half-axle housing, and at the same time prevent impurities such as mud and water from infiltrating, ensuring the normal operation of the transmission system. In some designs, the half-axle drive housing of the rear axle is matched with an independent suspension, and the half-axle section between the differential and the wheel is connected by a universal joint to meet the need for the independent up and down movement of the driving wheels. In summary, the half-axle drive housing of the tractor's rear axle not only plays a role in supporting and protecting key components in the tractor, but also ensures the stable operation and efficient operation of the tractor under various working conditions by transmitting loads, adjusting the ground clearance and axle distance, preventing oil leakage and the infiltration of mud and water, and connecting the independent suspension. The problems existing in the above technology are as follows: After assembling multiple components on the half-axle drive housing, it is necessary to seal the top of the housing with a cover plate. The cover plate and the top of the half-axle drive housing are assembled and connected through multiple connecting parts and fixing parts. Therefore, it is not convenient for users to assemble and connect the cover plate and the half-axle drive housing, and the maintenance convenience of multiple components in the inner cavity of the half-axle drive housing is reduced, so it is not convenient for users to use. Utility Model Content

[0004] In view of the problems existing in the prior art, the present utility model provides a tractor rear axle half-axle drive housing that can overcome or at least partially solve the above problems.

[0005] The present utility model is realized as follows: A tractor rear axle half-axle drive housing includes a half-axle drive housing, a cover plate, four connecting plates, and two fixing blocks. The cover plate is located at the top of the half-axle drive housing. The two fixing blocks are respectively located at the front and rear sides of the half-axle drive housing and are fixedly connected to the surface of the half-axle drive housing. The four connecting plates are respectively located on the left and right sides of the front and rear sides of the bottom of the cover plate and are fixedly connected to the bottom of the cover plate. The left and right sides of the fixing blocks are in contact with the surface of the connecting plates. A placement groove is opened in the inner cavity of the fixing block; a positioning mechanism for cooperating with the cover plate is arranged in the inner cavity of the placement groove; a transmission mechanism for cooperating with the positioning mechanism is arranged in the inner cavity of the placement groove.

[0006] To improve the assembly convenience of the cover plate and the half - shaft drive housing, preferably, the positioning mechanism includes two positioning rods, two traction rods, and four tension springs. The two positioning rods are respectively located on the left and right sides inside the placement groove. The two traction rods are respectively located at the opposite ends of the two positioning rods and are fixedly connected to the surfaces of the positioning rods. The four tension springs are respectively located at the top and bottom on the opposite sides of the two traction rods and are fixedly connected to the surfaces of the traction rods. The side of the tension spring close to the inner wall of the placement groove is fixedly connected to the inner wall of the placement groove. By setting the positioning mechanism, the positioning rod can, through the mutual cooperation of the fixing block and the connecting plate, achieve the effect of quickly assembling and fixing the cover plate to the half - shaft drive housing, avoiding the situation where the cover plate cannot be quickly fixed after being butted with the half - shaft drive housing.

[0007] To improve the movement convenience of the positioning mechanism, preferably, the transmission mechanism includes a rotary motor, a turntable, and two rotating rods. The rotary motor is located inside the placement groove. The turntable is located at the output end behind the rotary motor and is fixedly connected to the output end of the rotary motor. The two rotating rods are respectively located on the left and right sides of the turntable and are fixedly connected to the surface of the turntable. The protruding end at the rear of the rotating rod contacts the inner wall of the traction rod. By setting the transmission mechanism, the rotary motor can, through the mutual cooperation of the turntable and the rotating rods, achieve the effect of quickly driving the positioning rod to move its position through the traction rod, avoiding the situation where the cover plate cannot be quickly disengaged from the fixed state when it is necessary to remove the cover plate to maintain the components inside the half - shaft drive housing.

[0008] To improve the movement stability of the transmission mechanism, preferably, the rear side of the turntable is movably connected to a support plate through a rotating shaft. The top of the support plate is fixedly connected to the inner wall of the placement groove. By setting the support plate, the support plate can, through the connection point with the rotating shaft of the turntable, achieve the effect of assisting the turntable and the traction rod to rotate stably, avoiding the situation of instability during the use of the turntable and the traction rod.

[0009] To improve the movement stability of the positioning mechanism, preferably, moving rods are fixedly connected to both the top and bottom of the traction rod. A limiting rod is movably connected to the inner cavity of the moving rod. The side of the limiting rod close to the inner wall of the placement groove is fixedly connected to the inner wall of the placement groove. By setting the moving rod and the limiting rod, the limiting rod can, through the mutual cooperation with the moving rod, achieve the effect of limiting the traction rod and the positioning rod, avoiding the problem of deviation when the traction rod and the positioning rod move.

[0010] In order to improve the docking effect of the positioning rod, preferably, connection holes are provided on both the left and right sides of the fixed block, positioning grooves are provided at the relative ends of the two connecting plates, and the relative ends of the two positioning rods pass through the connection holes and extend into the inner cavity of the positioning grooves. By providing the connection holes and the positioning grooves, the connection holes play a role in enabling the positioning rod to be quickly docked with the positioning groove.

[0011] In order to improve the installation convenience of the rotating motor, preferably, a fixing plate is fixedly connected to the bottom of the rotating motor, and the bottom of the fixing plate is fixedly connected to the inner wall of the placement groove. By providing the fixing plate, the fixing plate plays a role in facilitating the user to quickly install and fix the rotating motor.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] In the present utility model, by providing a half-axis drive housing, a cover plate, a connecting plate, a fixed block, a placement groove, a positioning mechanism, and a transmission mechanism, when the rotating motor is started, the rotating motor will drive the turntable to rotate through its output end. During the rotation of the turntable, the two side rotating rods will be driven to rotate. During the rotation of the rotating rods, they will contact the inner wall of the traction rod and drive the traction rod to move. During the movement of the traction rod, the tension spring will be stretched and the positioning rod will be driven to move. After the positioning rod moves out of the inner cavity of the positioning groove, the cover plate can be removed to repair and maintain the components inside the half-axis drive housing. After the repair and maintenance are completed, the cover plate is docked with the top of the half-axis drive housing again. During the docking process, the two connecting plates need to be fitted to the surface of the fixed block. After the docking is completed, when the rotating motor is turned off, the turntable and the rotating rods will lose the rotation torque. After the turntable and the rotating rods lose the rotation torque, the tension of the tension spring will contract, and it will quickly drive the positioning rod to insert into the inner cavity of the positioning groove through the traction rod. After the positioning rod inserts into the inner cavity of the positioning groove, through the mutual cooperation of the fixed block and the connecting plate, the effect of quickly assembling and fixing the cover plate to the half-axis drive housing can be achieved. Description of the Drawings

[0014] Figure 1 is a three-dimensional structure schematic diagram provided by an embodiment of the present utility model;

[0015] Figure 2 is a three-dimensional sectional view provided by an embodiment of the present utility model;

[0016] Figure 3 is an assembly decomposition schematic diagram of a three-dimensional structure provided by an embodiment of the present utility model;

[0017] Figure 4 is a connection schematic diagram of the internal structure of the placement groove provided by an embodiment of the present utility model;

[0018] Figure 5This is provided by an embodiment of the present utility model Figure 2 The partial enlarged view of part A in

[0019] In the figure: 1, half shaft drive housing; 2, cover plate; 3, connecting plate; 4, fixing block; 5, placing groove; 6, positioning mechanism; 7, transmission mechanism; 601, positioning rod; 602, traction rod; 603, tension spring; 701, rotating motor; 702, turntable; 703, rotating rod; 8, support plate; 9, moving rod; 10, limiting rod; 11, connecting hole; 12, positioning groove; 13, fixing plate. Specific embodiments

[0020] To further understand the inventive content, features and effects of the present utility model, the following embodiments are cited and detailed as follows in conjunction with the accompanying drawings.

[0021] The structure of the present utility model will be described in detail below with reference to the accompanying drawings.

[0022] As Figures 1 to 5As shown in the figure, a half - shaft drive housing for a tractor rear axle provided by an embodiment of the present utility model includes a half - shaft drive housing 1, a cover plate 2, four connecting plates 3, and two fixing blocks 4. The cover plate 2 is located at the top of the half - shaft drive housing 1. The two fixing blocks 4 are respectively located at the front side and the rear side of the half - shaft drive housing 1 and are fixedly connected to the surface of the half - shaft drive housing 1. The four connecting plates 3 are respectively located on the left and right sides of the front and rear sides of the bottom of the cover plate 2 and are fixedly connected to the bottom of the cover plate 2. The left and right sides of the fixing block 4 are in contact with the surface of the connecting plate 3. A placement groove 5 is provided in the inner cavity of the fixing block 4; a positioning mechanism 6 for cooperating with the cover plate 2 is provided in the inner cavity of the placement groove 5; a transmission mechanism 7 for cooperating with the positioning mechanism 6 is provided in the inner cavity of the placement groove 5. The positioning mechanism 6 includes two positioning rods 601, two traction rods 602, and four tension springs 603. The two positioning rods 601 are respectively located on the left and right sides of the inner cavity of the placement groove 5. The two traction rods 602 are respectively located at the opposite ends of the two positioning rods 601 and are fixedly connected to the surface of the positioning rods 601. The four tension springs 603 are respectively located at the top and bottom on the opposite sides of the two traction rods 602 and are fixedly connected to the surface of the traction rods 602. The side of the tension spring 603 close to the inner wall of the placement groove 5 is fixedly connected to the inner wall of the placement groove 5. By setting the positioning mechanism 6, the positioning rod 601 can, through the mutual cooperation of the fixing block 4 and the connecting plate 3, achieve the effect of quickly assembling and fixing the cover plate 2 to the half - shaft drive housing 1, avoiding the situation that the cover plate 2 cannot be quickly fixed after being docked with the half - shaft drive housing 1. The transmission mechanism 7 includes a rotating motor 701, a turntable 702, and two rotating rods 703. The rotating motor 701 is located in the inner cavity of the placement groove 5. The turntable 702 is located at the output end at the rear side of the rotating motor 701 and is fixedly connected to the output end of the rotating motor 701. The two rotating rods 703 are respectively located on the left and right sides of the turntable 702 and are fixedly connected to the surface of the turntable 702. The protruding end at the rear side of the rotating rod 703 is in contact with the inner wall of the traction rod 602. By setting the transmission mechanism 7, the rotating motor 701 can, through the mutual cooperation of the turntable 702 and the rotating rods 703, achieve the function of quickly driving the positioning rod 601 to move its position through the traction rod 602, avoiding the situation that when it is necessary to remove the cover plate 2 to maintain the parts in the inner cavity of the half - shaft drive housing 1, the cover plate 2 cannot be quickly disengaged from the fixed state. A support plate 8 is movably connected to the rear side of the turntable 702 through a rotating shaft. The top of the support plate 8 is fixedly connected to the inner wall of the placement groove 5. By setting the support plate 8, the support plate 8 can, through the connection point with the rotating shaft of the turntable 702, achieve the role of assisting the turntable 702 and the traction rod 602 to rotate stably, avoiding the situation that the turntable 702 and the traction rod 602 are unstable during use. A moving rod 9 is fixedly connected to the top and bottom of the traction rod 602. A limiting rod 10 is movably connected to the inner cavity of the moving rod 9. The side of the limiting rod 10 close to the inner wall of the placement groove 5 is fixedly connected to the inner wall of the placement groove 5. By setting the moving rod 9 and the limiting rod 10,The limiting rod 10 can cooperate with the moving rod 9 to limit the traction rod 602 and the positioning rod 601, avoiding the problem of deviation of the traction rod 602 and the positioning rod 601 during movement. Connecting holes 11 are provided on both the left and right sides of the fixed block 4, positioning grooves 12 are provided at the relative ends of the two connecting plates 3, and the relative ends of the two positioning rods 601 pass through the connecting holes 11 and extend into the inner cavity of the positioning grooves 12. By providing the connecting holes 11 and the positioning grooves 12, the connecting holes 11 can quickly dock the positioning rods 601 with the positioning grooves 12. The bottom of the rotating motor 701 is fixedly connected with a fixing plate 13, and the bottom of the fixing plate 13 is fixedly connected with the inner wall of the placement groove 5. By providing the fixing plate 13, the fixing plate 13 can facilitate the user to quickly install and fix the rotating motor 701.,

[0023] The working principle of the present utility model:

[0024] During use, start the rotating motor 701. The rotating motor 701 will drive the turntable 702 to rotate through its output end. During the rotation of the turntable 702, the two side rotating rods 703 will be driven to rotate. During the rotation of the rotating rods 703, they will contact the inner wall of the traction rod 602 and drive the traction rod 602 to move. During the movement of the traction rod 602, the tension spring 603 will be stretched and the positioning rod 601 will be driven to move. After the positioning rod 601 moves out of the inner cavity of the positioning groove 12, the cover plate 2 can be removed to repair and maintain the components inside the half shaft drive housing 1. After the repair and maintenance are completed, the cover plate 2 is docked with the top of the half shaft drive housing 1 again. During the docking process, the two connecting plates 3 need to be fitted with the surface of the fixed block 4. After the docking is completed, turn off the rotating motor 701, and the turntable 702 and the rotating rods 703 will lose the rotation torque. After the turntable 702 and the rotating rods 703 lose the rotation torque, the tension of the tension spring 603 will contract, and the positioning rod 601 will be quickly driven by the traction rod 602 to insert into the inner cavity of the positioning groove 12. After the positioning rod 601 is inserted into the inner cavity of the positioning groove 12, through the cooperation of the fixed block 4 and the connecting plate 3, the cover plate 2 can be quickly assembled and fixed with the half shaft drive housing 1.,

[0025] For the specific model specifications of the half shaft drive housing 1 and the rotating motor 701 proposed in this application, they need to be selected and determined according to the actual specifications of the device. The specific selection calculation method, circuit connection method and its control method all adopt the existing technologies in the field, so they will not be described in detail here.,

[0026] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, within the scope of the technical solution of the present utility model.

Claims

1. A tractor rear axle half-axle drive housing, comprising a half-axle drive housing (1), a cover plate (2), four connecting plates (3) and two fixing blocks (4), characterized in that: The cover plate (2) is located at the top of the half-axle drive housing (1); the two fixing blocks (4) are respectively located at the front side and the rear side of the half-axle drive housing (1) and are fixedly connected to the surface of the half-axle drive housing (1); the four connecting plates (3) are respectively located at the left and right sides of the front side and the rear side of the bottom of the cover plate (2) and are fixedly connected to the bottom of the cover plate (2); the left and right sides of the fixing block (4) are both in contact with the surface of the connecting plate (3); and the inner cavity of the fixing block (4) is provided with a placement groove (5); The inner cavity of the placement groove (5) is provided with a positioning mechanism (6) used in conjunction with the cover plate (2); The inner cavity of the placement groove (5) is provided with a transmission mechanism (7) used in conjunction with the positioning mechanism (6).

2. A tractor rear axle half-shaft drive housing as claimed in claim 1, characterized in that: The positioning mechanism (6) comprises two positioning rods (601), two traction rods (602) and four tension springs (603); the two positioning rods (601) are respectively located on the left and right sides of the inner cavity of the placement groove (5); the two traction rods (602) are respectively located at the opposite ends of the two positioning rods (601) and are fixedly connected to the surfaces of the positioning rods (601); the four tension springs (603) are respectively located at the top and bottom of the opposite sides of the two traction rods (602) and are fixedly connected to the surfaces of the traction rods (602); and the tension spring (603) is fixedly connected to the inner wall of the placement groove (5) on the side close to the inner wall of the placement groove (5).

3. A tractor rear axle half-shaft drive housing as claimed in claim 2, characterized in that: The transmission mechanism (7) comprises a rotating motor (701), a rotating disk (702) and two rotating rods (703); the rotating motor (701) is located in the inner cavity of the placement slot (5); the rotating disk (702) is located at the output end of the rotating motor (701) at the rear side and is fixedly connected to the output end of the rotating motor (701); the two rotating rods (703) are respectively located on the left and right sides of the rotating disk (702) and are fixedly connected to the surface of the rotating disk (702); and the protruding ends of the rotating rods (703) at the rear sides are in contact with the inner wall of the traction rod (602).

4. A tractor rear axle half-shaft drive housing as claimed in claim 3, characterized in that: The rear side of the rotating disk (702) is movably connected to a support plate (8) via a rotating shaft, and the top of the support plate (8) is fixedly connected to the inner wall of the placement groove (5).

5. A tractor rear axle half-shaft drive housing as claimed in claim 2, characterized in that: The top and bottom of the traction rod (602) are both fixedly connected to a moving rod (9), the inner cavity of the moving rod (9) is movably connected to a limiting rod (10), and the limiting rod (10) is fixedly connected to the inner wall of the placement groove (5) on one side close to the inner wall of the placement groove (5).

6. A tractor rear axle half-shaft drive housing as claimed in claim 2, characterized in that: The fixing block (4) is provided with connecting holes (11) on both left and right sides, the two connecting plates (3) are provided with positioning grooves (12) at opposite ends, and the two positioning rods (601) are provided with positioning grooves (12) at opposite ends through the connecting holes (11) and extend to the inner cavity of the positioning grooves (12).

7. A tractor rear axle half-shaft drive housing as claimed in claim 3, characterized in that: A fixing plate (13) is fixedly connected to the bottom of the rotating motor (701), and the bottom of the fixing plate (13) is fixedly connected to the inner wall of the placement groove (5).

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