Swash plate and supporting ball lubricating structure, hydraulic motor and vehicle

Abstract

The utility model relates to the technical field of hydraulic motors, in particular to a swash plate and supporting ball lubricating structure, a hydraulic motor and a vehicle. A spherical hole is formed in the end face of the side, facing the supporting ball, of the swash plate, a ball socket positioning hole is formed in the center of the spherical hole, and the supporting ball is partially embedded into the spherical hole and used for supporting the swash plate to swing. The swash plate is provided with an oil channel, one end of the oil channel is communicated with the ball socket positioning hole, and the other end of the oil channel penetrates through the side face of the swash plate and is used for guiding hydraulic oil in the shell into the ball socket positioning hole. According to the utility model, the problem of abrasion of the swash plate and the supporting ball is solved, and abnormal abrasion between parts and the shell and interference on variable control of the motor are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic motors, in particular to a lubrication structure for a swash plate and a support ball, a hydraulic motor and a vehicle. Background Art

[0002] A hydraulic motor is a key actuating element in a hydraulic system, which converts hydraulic pressure energy into mechanical energy and outputs torque and speed. In a hydraulic system, a swash plate is a key component for controlling the output speed and torque of the motor, and its working principle is realized through the flow of hydraulic oil and the change of the swash plate angle. The swash plate support ball (i.e., the swash plate seat) is located between the housing and the swash plate, and is used to support the swash plate and allow it to swing. Therefore, the cooperation between the swash plate and the support ball is crucial for the performance and service life of the motor. When the oil film between the swash plate and the support ball is unstable, hard contact may occur, especially when the motor is running at high speed, the pressure increases, and the swash plate is subjected to rapidly changing lateral forces, resulting in insufficient oil film formation speed and abnormal wear.

[0003] To solve this problem, in the prior art, an oil passage is added to the housing, and high-pressure oil is introduced through the swash plate seat, and then an oil film is established on the slideway between the swash plate and the swash plate seat to achieve lubrication and reduce wear. However, this solution requires machining new oil passages at the bottom of the housing and the swash plate seat, and at the same time ensuring the stability of the oil film between the swash plate and the swash plate seat. There are two problems:

[0004] 1. Due to problems such as machining and assembly, it is difficult to ensure that the oil passage at the bottom of the housing is completely aligned with the oil passage of the swash plate seat. When the oil enters the swash plate seat, it is easy to impact the bottom of the swash plate seat, resulting in abnormal wear between the side of the swash plate seat and the inner wall of the housing. This problem is more serious when the support seat is spherical (i.e., the support ball).

[0005] 2. The new oil passages machined at the bottom of the housing and the swash plate seat are connected to the high-pressure oil passage. The oil pressure is high, and after entering the oil passage of the swash plate seat, it generates an upward force on the swash plate, causing the swash plate angle to tilt and the variable to change, affecting the variable control of the motor, and the piston pump cannot operate effectively. Summary of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the purpose of the embodiments of the present utility model is to provide a lubrication structure for a swash plate and a support ball to solve the wear problem of the swash plate and the support ball, and avoid abnormal wear between parts and the housing and interference with the variable control of the motor.

[0007] To achieve the above purpose, the embodiments of the present utility model provide the following technical solutions:

[0008] A swash plate and support ball lubrication structure, wherein a spherical hole is provided on the end surface of the swash plate facing the support ball, a ball socket positioning hole is provided at the center of the spherical hole, and a portion of the support ball is embedded in the spherical hole to support the swing of the swash plate; an oil channel is provided on the swash plate, one end of the oil channel is connected to the ball socket positioning hole, and the other end of the oil channel passes through the side of the swash plate, so as to introduce the hydraulic oil in the housing into the ball socket positioning hole.

[0009] Optionally, the swash plate includes a top surface and a bottom surface, the bottom surface includes a first bottom surface and a second bottom surface, and the first bottom surface and the second bottom surface intersect in a straight line.

[0010] Optionally, the spherical hole is provided on the intersection line of the first bottom surface and the second bottom surface, and the supporting ball is supported on the intersection line to make the swash plate produce an angular swing.

[0011] Optionally, there are two support balls, both of which are installed on the intersection line of the first bottom surface and the second bottom surface and are respectively located on both sides of the center of the swash plate. Two oil passages are also provided, and each oil passage corresponds to a support ball.

[0012] Optionally, the ball and socket positioning hole includes a cylindrical hole and a conical hole, the outer end of the cylindrical hole is connected to the spherical hole, the diameter of the cylindrical hole is smaller than the diameter of the spherical hole, the conical hole is located at the inner end of the cylindrical hole, and the inner end of the oil channel is connected to the conical hole.

[0013] Optionally, the side surface of the swash plate has a recessed platform, and the outer end of the oil passage is connected to the recessed platform.

[0014] The embodiment of the utility model further provides a hydraulic motor, comprising a swash plate, supporting balls, and the swash plate and supporting ball lubrication structure as described above.

[0015] Optionally, it further comprises a housing, the swash plate and the supporting balls are mounted in the housing, and the lubrication structure introduces the lubricating oil in the housing into the ball socket positioning hole of the swash plate.

[0016] Optionally, the hydraulic motor further comprises a plunger, wherein the plunger abuts against an end surface of the swash plate on a side away from the supporting ball.

[0017] An embodiment of the utility model further provides a vehicle, comprising the hydraulic motor as described above.

[0018] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0019] 1. This lubrication structure adds an oil passage inside the swash plate. When the motor runs, the oil in the housing will flow. The oil enters the ball socket positioning ball through the oil passage on the swash plate, and then seeps out to the gap between the swash plate and the support ball at the edge of the support ball, forming an oil film, reducing the wear between the swash plate and the support ball, and avoiding the generation of wear impurities that may affect the normal operation of other components. This lubrication method not only improves the operating efficiency of the motor but also extends the service life of each component.

[0020] 2. This lubrication structure uses hydraulic oil to enter the mating part between the support ball and the swash plate through the oil passage in the swash plate, preventing abnormal wear at the mating part and causing damage to the support ball and the swash plate. Compared with the method of opening oil passages in the housing and the swash plate seat, this lubrication structure has the following advantages: 1. The oil passage is not designed on the housing and the swash plate seat but directly in the swash plate, reducing the processing and assembly difficulty and avoiding abnormal wear between components and the housing. 2. This oil passage is not connected to the high-pressure oil passage, so there is no oil impact phenomenon, avoiding interference with the variable control of the motor.

[0021] 3. There is a remaining space in the swash plate ball socket positioning hole to store oil after mating with the support ball, ensuring the continuity of oil lubrication. Moreover, the ball socket space is the position of the positioning hole during processing and does not require additional processing.

[0022] The advantages of additional aspects of the present utility model will be given in the following description, some of which will become obvious from the following description or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In addition, the distances or dimensions between each part are exaggerated for showing the positions, and the schematic diagrams are only for illustration.

[0024] Figure 1 is a cross-sectional view of the walking motor provided by an embodiment of the present utility model;

[0025] Figure 2 is a schematic diagram of the mating of the swash plate and the support ball provided by an embodiment of the present utility model;

[0026] In the figure: 1. Housing; 2. Support ball; 3. Swash plate; 4. Ball socket positioning hole; 5. Oil passage; 6. Plunger; 7. Top surface; 8. First bottom surface; 9. Second bottom surface; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] It should be noted that the following detailed description is illustrative and aims to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Term Explanation:

[0029] Traveling motor: That is, a hydraulic motor, which is an actuator in a hydraulic system. It converts the hydraulic pressure energy provided by the hydraulic pump into the mechanical energy (torque and speed) of its output shaft.

[0030] Swash plate: The working principle of the swash plate is to control the output speed and torque of the motor by the flow of hydraulic oil and the change of the swash plate angle.

[0031] As introduced in the background art, in order to reduce the wear between the swash plate seat and the swash plate, the prior art adds an oil passage on the housing, introduces high-pressure oil through the swash plate seat, and forms an oil film between the swash plate and the swash plate seat to reduce wear. However, this solution has two main problems: First, it is difficult to completely align the oil passage at the bottom of the housing with the oil passage of the swash plate seat, resulting in the oil fluid being likely to impact the bottom of the swash plate seat when entering the swash plate seat, causing abnormal wear; Second, the newly processed oil passage connecting the bottom of the housing and the swash plate seat is a high-pressure oil passage, and the oil fluid pressure is high. After entering the oil passage of the swash plate seat, it generates an upward force on the swash plate, causing the swash plate angle to tilt, affecting the variable control of the motor.

[0032] To solve the above technical problems, the present utility model proposes a lubrication structure for the swash plate and the support ball, changing the current way that the oil film formed between the swash plate and the support ball is unstable and occasionally has hard contact. A hole is machined from the side of the swash plate to the center of the ball socket positioning hole of the swash plate, forming an oil passage. The appearance of the oil passage enables the support ball and the swash plate to form a stable oil film, reducing the wear of both, improving the service life of the components, and thus ensuring the product performance.

[0033] As Figure 1 shown, on the end face of the swash plate 3 facing the support ball 2, a spherical hole is provided, and the center of the spherical hole has a ball socket positioning hole 4. A part of the support ball 2 is embedded in the spherical hole to support the swing of the swash plate 3; an oil passage 5 is provided on the swash plate 3. One end of the oil passage 5 communicates with the ball socket positioning hole 4, and the other end of the oil passage 5 penetrates through the side face of the swash plate 3 for introducing the hydraulic oil in the housing 1 into the ball socket positioning hole 4.

[0034] This lubrication structure adds an oil passage 5 inside the swash plate 3. When the motor runs, the oil in the housing 1 will flow. The oil enters the ball socket positioning ball through the oil passage 5 on the swash plate 3, and then seeps out to the gap between the swash plate 3 and the supporting ball 2 at the edge of the supporting ball 2 to form an oil film, reducing the wear between the swash plate 3 and the supporting ball 2, and avoiding the generation of wear impurities that may affect the normal operation of other components. This lubrication method not only improves the operating efficiency of the motor but also extends the service life of each component.

[0035] Compared with the method of opening the oil passage 5 in the housing 1 and the swash plate seat, this lubrication structure has the following advantages: 1. The oil passage 5 is not designed on the housing 1 and the swash plate seat, but directly in the swash plate 3, reducing the processing and assembly difficulty and preventing abnormal wear between the components and the housing 1. 2. This oil passage 5 is not connected to the high-pressure oil passage 5, avoiding the phenomenon of oil impact and preventing interference with the variable control of the motor. 3. There is a remaining space for storing oil after the ball socket positioning hole 4 of the swash plate 3 cooperates with the supporting ball 2, ensuring the continuity of oil lubrication. Moreover, the ball socket space is the position of the positioning hole during processing and does not require additional processing.

[0036] As Figure 2 shown, the swash plate 3 includes a top surface 7 and a bottom surface. The bottom surface includes a first bottom surface 8 and a second bottom surface 9. The first bottom surface 8 and the second bottom surface 9 intersect at a straight line, making the mechanical properties of the swash plate 3 more stable. The design of the swash plate 3 enables it to effectively withstand the pressure from the supporting ball 2 during operation and produce an appropriate angular swing. The design of this structure not only helps to improve the load-bearing capacity of the swash plate 3 but also optimizes the mating relationship with the supporting ball 2. Since the intersection line of the force-bearing surface of the supporting ball 2 and the swash plate 3 is on the intersection line, the swash plate 3 can make more effective use of the supporting force of the supporting ball 2 to ensure a smooth and efficient movement process of the swash plate 3.

[0037] The spherical hole is opened on the intersection line of the first bottom surface 8 and the second bottom surface 9. The supporting ball 2 supports on the intersection line to cause the swash plate 3 to have an angular swing. The force-bearing point of the supporting ball 2 is on the intersection line, enabling the swash plate 3 to move with a relatively fixed supporting point during swinging and avoiding imbalance caused by tilting. This design not only ensures a reasonable swinging angle of the swash plate 3 but also greatly improves the working efficiency of the swash plate 3. The combination of the spherical hole and the supporting ball 2 provides a good support and lubrication interface, helping to form a stable oil film when the oil passage 5 flows into the ball socket positioning hole 4 and reducing wear.

[0038] There are two support balls 2, both of which are installed on the intersection line of the first bottom surface 8 and the second bottom surface 9, and are symmetrically arranged on both sides of the center of the swash plate 3. There are also two oil channels 5, and each oil channel 5 corresponds to one support ball 2. This design of double support balls 2 can further improve the stability of the swash plate 3, making it more balanced during operation. Moreover, each support ball 2 corresponds to one oil channel 5, and this design ensures that each support ball 2 has an independent lubrication channel, providing a more uniform oil distribution. In this way, the design of the oil channel 5 enhances the lubrication effect, ensuring that the hydraulic oil can flow quickly and effectively into each ball socket position, thereby improving the overall lubrication performance and reducing wear. This combination of double oil channels 5 and double support balls 2 effectively improves the matching accuracy and efficiency between the swash plate 3 and the support balls 2, making the performance of the hydraulic motor more stable and reliable.

[0039] The ball socket positioning hole 4 includes a cylindrical hole and a conical hole. The outer end of the cylindrical hole is connected to the spherical hole, and the diameter of the cylindrical hole is smaller than that of the spherical hole. The conical hole is located at the inner end of the cylindrical hole, and the inner end of the oil channel 5 is communicated with the conical hole. The ball socket positioning hole 4 of the swash plate 3 can be used to store oil, ensuring the continuity of oil lubrication, thereby forming a continuous and uniform oil film and improving the lubrication effect.

[0040] The side surface of the swash plate 3 has a concave platform, and the outer end of the oil channel 5 is communicated with the concave platform. This design enables the inlet of the oil channel 5 to introduce hydraulic oil more conveniently, improving the flow efficiency of the oil. By optimizing the way of introducing the oil, the lubrication effect is improved.

[0041] Based on the above lubrication structure, this embodiment also provides a hydraulic motor, which is composed of a swash plate 3, support balls 2 and a lubrication structure. The design of the lubrication structure ensures that when the motor is working, the hydraulic oil inside the housing 1 can be effectively introduced into the ball socket positioning hole 4 of the swash plate 3. This design ensures that the hydraulic motor can quickly form an oil film during operation, thereby reducing friction and wear. By introducing this optimized lubrication structure into the hydraulic motor, more efficient lubrication can be achieved during the operation of the hydraulic motor, improving the overall working efficiency. This structure not only improves the performance of the motor, but also extends its service life, ensuring the stability and reliability of the hydraulic motor under high load conditions.

[0042] The swash plate 3 and the support balls 2 are installed inside the housing 1, and the lubrication structure introduces the lubricating oil inside the housing 1 onto the ball socket positioning hole 4 of the swash plate 3. The design of the lubrication structure enables the hydraulic oil to flow smoothly from inside the housing 1 into the ball socket positioning hole 4 of the swash plate 3, ensuring stable lubrication conditions during the operation of the motor.

[0043] The hydraulic motor further includes a plunger 6, which abuts against the end surface of the swash plate 3 on the side away from the support ball 2. In the hydraulic motor, the connection between the plunger 6 and the swash plate 3 is crucial. The plunger 6 is arranged on the end surface of the swash plate 3 on the side away from the support ball 2, and can effectively apply pressure to the swash plate 3. This design allows the plunger 6 to accurately control the angle and speed of the swash plate 3 through the changing hydraulic oil pressure, thereby adjusting the output characteristics of the motor.

[0044] Based on the above hydraulic motor, this embodiment also proposes a vehicle, the high efficiency performance and good lubrication structure of the hydraulic motor provide guarantee for the power output of the vehicle. By applying the hydraulic motor to the vehicle, the power response and operation efficiency of the vehicle can be improved and the energy consumption can be reduced.

[0045] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the protection scope of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.

Claims

1. An inclined disk and support ball lubrication structure, characterized in that, The end surface of the swash plate facing the supporting ball is provided with a spherical hole, the center of the spherical hole has a ball socket positioning hole, and part of the supporting ball is embedded in the spherical hole to support the swing of the swash plate; The swash plate is provided with an oil passage, one end of which is connected to the ball socket positioning hole, and the other end of which passes through the side of the swash plate, for introducing the hydraulic oil in the housing into the ball socket positioning hole.

2. The swash plate and support ball lubrication structure according to claim 1, characterized in that The swash plate includes a top surface and a bottom surface, the bottom surface includes a first bottom surface and a second bottom surface, and the first bottom surface and the second bottom surface intersect in a straight line.

3. The swash plate and support ball lubrication structure according to claim 2, characterized in that, The spherical hole is formed on the intersection line of the first bottom surface and the second bottom surface, and the supporting ball is supported on the intersection line to make the swash plate produce an angular swing.

4. The swash plate and support ball lubrication structure according to claim 2, characterized in that, There are two support balls, both of which are installed on the intersection line of the first bottom surface and the second bottom surface and are respectively located on both sides of the center of the swash plate. There are also two oil passages, each of which corresponds to a support ball.

5. The swash plate and support ball lubrication structure according to claim 1, wherein, The ball and socket positioning hole includes a cylindrical hole and a conical hole. The outer end of the cylindrical hole is connected to the spherical hole. The diameter of the cylindrical hole is smaller than the diameter of the spherical hole. The conical hole is located at the inner end of the cylindrical hole. The inner end of the oil channel is connected to the conical hole.

6. The swash plate and support ball lubrication structure according to claim 1, characterized in that, The side surface of the swash plate has a concave platform, and the outer end of the oil passage is communicated with the concave platform.

7. A hydraulic motor, characterized in that, It comprises a slanted plate, supporting balls and a lubricating structure for the slanted plate and supporting balls as described in any one of claims 1 to 6.

8. The hydraulic motor according to claim 7, wherein It also includes a housing, the swash plate and the supporting balls are installed in the housing, and the lubrication structure introduces the lubricating oil in the housing into the ball socket positioning hole of the swash plate.

9. The hydraulic motor according to claim 7, characterized in that, The hydraulic motor further includes a plunger, the plunger abutting against an end surface of the swash plate on a side away from the support ball.

10. A vehicle, characterized in that, Comprising a hydraulic motor as described in any one of claims 7-9.

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