阅读说明：本技术 一种浮动支撑装置、轴向柱塞泵摆盘及轴向柱塞泵 (Floating support device, axial plunger pump wobble plate and axial plunger pump ) 是由 高雪松 李瀚赓 焦玲 杨广文 李跃军 曹明 张丽丽 于 2021-06-18 设计创作，主要内容包括：本申请实施例提供了一种浮动支撑装置、轴向柱塞泵摆盘及轴向柱塞泵,浮动支撑装置(1)包括支撑座(2),弹簧(3)和钢球(4)；浮动支撑装置(1)设置于摆盘(5)的底端；摆盘(5)设置有与所述支撑座(2)对应的第一凹槽(6),第一凹槽(6)用于固定支撑座(2)；浮动支撑装置(1)通过钢球(4)与泵体相抵触。根据本申请实施例的轴向柱塞泵摆盘,通过设置的浮动支撑装置,改善了现有的轴向柱塞泵摆盘,在高压力工况下的高受力状态,减小了其工作中的摩擦损耗。(The embodiment of the application provides a floating support device, an axial plunger pump wobble plate and an axial plunger pump, wherein the floating support device (1) comprises a support seat (2), a spring (3) and a steel ball (4); the floating support device (1) is arranged at the bottom end of the swinging plate (5); the swing disc (5) is provided with a first groove (6) corresponding to the supporting seat (2), and the first groove (6) is used for fixing the supporting seat (2); the floating support device (1) is abutted against the pump body through a steel ball (4). According to the axial plunger pump swinging plate provided by the embodiment of the application, the high stress state of the existing axial plunger pump swinging plate under a high pressure condition is improved through the arranged floating supporting device, and the friction loss in the working process is reduced.)

1. The floating support device is characterized in that the floating support device (1) comprises a support seat (2), a spring (3) and a steel ball (4); the floating support device (1) is arranged at the bottom end of the swinging plate (5); the swing disc (5) is provided with a first groove (6) corresponding to the supporting seat (2), and the first groove (6) is used for fixing the supporting seat (2); the floating support device (1) is abutted against the pump body through the steel ball (4).

2. The floating support device according to claim 1, characterized in that the support base (2) of the floating support device (1) is provided with an anti-drop mechanism (7) for preventing the steel balls (4) from dropping off.

3. An axial plunger pump wobble plate comprising a floating support arrangement according to any of claims 1-2.

4. The axial plunger pump wobble plate according to claim 3, characterized in that the lower half part of the wobble plate (5) is a half cylinder (8), a second groove (9) for fixing the support base (2) is formed in the bottom of the half cylinder (8), and the floating support device (1) is fixed to the bottom of the half cylinder (8) through the second groove (9) and abuts against the pump body through the steel ball (4).

5. An axial piston pump comprising a pump body and a wobble plate mounted in the pump body, characterized in that the axial piston pump comprises an axial piston pump wobble plate according to any of claims 3-4.

6. The axial plunger pump according to claim 5, characterized in that the pump body is further provided with a third groove (10) for fixing the support seat (2), and the floating support device (2) is fixed on the pump body through the third groove (10) and is abutted against the wobble plate (5) through the steel ball (4).

Technical Field

The application relates to the field of hydraulic pumps, in particular to a floating support device, an axial plunger pump wobble plate and an axial plunger pump.

Background

The hydraulic pump is a power element and a core element of the pressure system, and therefore has extremely important significance for the design and research of the hydraulic pump. The hydraulic axial plunger pump is mainly composed of a transmission shaft, a shell, a wobble plate (swash plate), a plunger, a cylinder body, a spring, a bearing, a port plate, a rear cover and the like. The angle of the wobble plate (swash plate) is related to the displacement of the pump.

When the cylinder surface of the wobble plate (the swash plate) reciprocates on the sliding or rolling matching piece, the wobble plate is influenced by the gravity of the wobble plate and the gravity of the cylinder body, the plunger piston shoe and the like superposed on the wobble plate, the friction force of the wobble plate during sliding or rolling is increased, the abrasion is intensified, and the service life and the variable precision of the wobble plate are influenced.

Therefore, how to reduce the high stress state of the wobble plate and reduce the abrasion is a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

The embodiment of the application provides a floating support device, an axial plunger pump wobble plate and an axial plunger pump.

In a first aspect, the embodiment of the application provides an axial plunger pump wobble plate, and a floating support device is characterized in that a floating support device (1) comprises a support seat (2), a spring (3) and a steel ball (4); the floating support device (1) is arranged at the bottom end of the swinging plate (5); the swinging plate (5) is provided with a first groove (6) corresponding to the supporting seat (2), and the first groove (6) is used for fixing the supporting seat (2); the floating support device (1) is abutted against the pump body through a steel ball (4).

Furthermore, the supporting seat (2) of the floating supporting device (1) is provided with an anti-falling mechanism (7) for preventing the steel ball (4) from falling off.

In a second aspect, embodiments of the present application provide an axial plunger pump wobble plate, including a floating support device as described above.

Furthermore, the lower half part of the swinging plate (5) is a semi-cylinder (8), a second groove (9) for fixing the supporting seat (2) is formed in the bottom of the semi-cylinder (8), and the floating supporting device (1) is fixed to the bottom of the semi-cylinder (8) through the second groove (9) and is abutted to the pump body through the steel ball (4).

In a third aspect, embodiments of the present application provide an axial plunger pump, including a pump body and a wobble plate installed in the pump body, where the axial plunger pump includes the axial plunger pump wobble plate described above.

Furthermore, the pump body is further provided with a third groove (10) for fixing the supporting seat (2), and the floating supporting device (2) is fixed on the pump body through the third groove (10) and is abutted to the swinging disc (5) through the steel ball (4).

According to the embodiment of the application, the floating support device is arranged, so that the high stress state of the existing axial plunger pump swinging plate, particularly the swinging plate with the semi-column type unilateral push-pull structure under the high-pressure working condition, under the self gravity and the gravity of the cylinder body, the plunger sliding shoes and the like superposed on the self gravity is improved, and the friction loss in the working process is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 and fig. 2 are schematic structural diagrams of a wobble plate of an axial plunger pump provided in an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a floating support device provided in an embodiment of the present application;

fig. 4 and 5 are schematic structural diagrams of an axial plunger pump provided in an embodiment of the present application.

Reference numerals: 1. the device comprises a floating supporting device, 2, a supporting seat, 3, a spring, 4, a steel ball, 5, a swinging disc, 6, a first groove, 7, an anti-falling mechanism, 8, a semi-column body, 9, a second groove, 10, a third groove, 11, a pump body, 12, a main shaft, 13, a plunger, 14, an adjustable swinging disc piston, 15 and a single-side push-pull structure.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The variable piston pump is mainly applied to a through-shaft type variable piston pump with an adjustable axial swing disc, and the variable piston pump adopts a semi-cylindrical single-side push-pull structure swing disc, so that when the cylindrical surface of the swing disc reciprocates on a sliding or rolling matching piece, the swing disc is influenced by self gravity and gravity of a cylinder body, a plunger piston shoe pair and the like superposed on the self gravity, the friction force received by the swing disc in a sliding or rolling mode is increased, the abrasion is aggravated, and the service life and the variable precision are influenced.

Therefore, the embodiment of the present application provides a floating support device, an axial plunger pump wobble plate and an axial plunger pump, and the embodiment of the present invention is further described with reference to fig. 1 to 5.

Firstly, the floating support device provided by the embodiment of the application is introduced, and the floating support device (1) comprises a support seat (2), a spring (3) and a steel ball (4); the floating support device (1) is arranged at the bottom end of the swinging plate (5); the swinging plate (5) is provided with a first groove (6) corresponding to the supporting seat (2), and the first groove (6) is used for fixing the supporting seat (2); the floating support device (1) is abutted against the pump body through a steel ball (4).

In the embodiment, the floating support device (1) is arranged at the bottom end of the swinging plate, the bottom end of the swinging plate is provided with a first groove (6), and the support seat (2) of the floating support device is fixed (arranged) at the bottom end of the swinging plate through the first groove. The steel ball (4) is abutted to the pump body (11), and then the steel ball supports the swinging disc through the elasticity of the spring, so that when the angle of the swinging disc is changed, the friction coefficient between the bottom end of the swinging disc and the pump body is reduced, namely, the stress state of the swinging disc in work is changed, and the friction force of the swinging disc in the swinging process is reduced. In addition, the supporting device is arranged inside the swinging plate, the swinging plate is more compact in size and more flexible in swinging, so that the abrasion of the swinging plate is reduced, the service life is prolonged, and the efficiency is improved. The specific number of the floating supporting devices (1), the elastic coefficient of the spring (3), the material of the steel ball (4) and the like can be adjusted according to actual requirements.

In one embodiment of the application, the support base (2) of the floating support device (1) is provided with an anti-falling mechanism (7) for preventing the steel ball (4) from falling off. The anti-falling mechanism can be a circular ring fixedly connected with the opening of the supporting seat (2), and the inner diameter of the circular ring is smaller than the diameter of the steel ball, so that the steel ball can be prevented from falling off. Under the condition that the steel ball is not interfered with the contact surface of the steel ball by the elastic force of the spring, the steel ball can be prevented from falling off.

The embodiment of the application also provides an axial plunger pump wobble plate which comprises the floating support device. In an axial plunger pump balance provided in the embodiment of this application, be applied to through-shaft type axial balance adjustable variable piston pump, this kind of variable piston pump adopts half-cylinder type unilateral push-and-pull structure balance, the lower half of balance (5) is half cylinder (8), (or be called half cylinder), the bottom of half cylinder (8) is provided with second recess (9) that are used for fixed support seat (2), floating support device (1) is fixed in the bottom of half cylinder (8) through second recess (9), and it is inconsistent with the pump body through steel ball (4).

For the plunger pump adopting the semi-cylindrical single-side push-pull structure wobble plate, the cylindrical surface (semi-cylindrical surface) of the wobble plate reciprocates on a sliding or rolling matching piece to control the wobble angle and further control the displacement of the pump, and the plunger pump has the advantage of relatively small volume. Because the gravity of devices such as the wobble plate, the cylinder body, the plunger piston shoes and the like is superposed on the semi-cylindrical surface, the friction force applied to the device during sliding or rolling is increased, and the abrasion is intensified, so that the service life of the device is influenced, and the variable precision of the device is also influenced. Therefore, in the embodiment, the floating support device is arranged on the semi-cylindrical surface, and the steel ball supports the wobble plate through the elastic force of the spring, so that when the angle of the wobble plate is changed, the friction coefficient between the bottom end of the wobble plate and the pump body is reduced, the friction force of the wobble plate during swinging is reduced, the abrasion of the wobble plate is reduced, and the service life is prolonged. Meanwhile, the plunger pump to which the floating support device and the axial plunger pump wobble plate provided by the present application can be applied includes, but is not limited to, the plunger pump provided in the present embodiment that employs a wobble plate of a semi-cylindrical single-side push-pull structure.

The embodiment of the application also provides an axial plunger pump, which comprises the axial plunger pump wobble plate, and the pump can be a variable displacement piston pump.

In the axial plunger pump provided by one embodiment of the application, the floating support device (1) can be arranged on the pump body (11) and is abutted against the wobble plate (5) through the steel ball (4). Specifically, the pump body is provided with a third groove (10) for fixing the supporting seat (2), and the floating supporting device (1) is fixed on the pump body through the third groove (10). The working principle is the same as the situation that the floating support device (1) is arranged on the swinging plate.

In addition, the pump body below the swinging plate is generally a flange cover, and the floating support device (1) is arranged on the flange cover, so that the friction between the swinging plate and the flange cover (pump body) can be reduced, and the disassembly and maintenance of the floating support device are facilitated.

According to the floating support device, the axial plunger pump wobble plate and the axial plunger pump provided by the application, the friction coefficient and the friction force between the semi-cylindrical surface and the pump body can be reduced when the cylindrical surface of the wobble plate reciprocates on a sliding or rolling matching piece, so that the wear of the wobble plate is reduced, the service life is prolonged, and the efficiency is improved. Meanwhile, the floating supporting device is arranged inside the swinging plate or the pump body, so that the swinging plate is more compact integrally and more flexible in swinging.

As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.