CN215762063U - Swash plate structure of oil film lubrication and floating support - Google Patents
Swash plate structure of oil film lubrication and floating support Download PDFInfo
- Publication number
- CN215762063U CN215762063U CN202121410835.6U CN202121410835U CN215762063U CN 215762063 U CN215762063 U CN 215762063U CN 202121410835 U CN202121410835 U CN 202121410835U CN 215762063 U CN215762063 U CN 215762063U
- Authority
- CN
- China
- Prior art keywords
- swash plate
- oil
- pressure
- oil groove
- rotating surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a swash plate structure with oil film lubrication and floating support, which comprises a swash plate, wherein the bottom of the swash plate is provided with a rotating surface; the surface of the swash plate is a working surface and is divided into a high-pressure area and a low-pressure area; the high-pressure area is provided with a high-pressure oil inlet, the bottom of the rotating surface below the high-pressure area is provided with a first oil groove along the arc direction, and the high-pressure oil inlet is communicated with the first oil groove through a first oil way; and a second oil groove is formed in the bottom of the rotating surface below the low-pressure area along the arc direction, and is communicated with the high-pressure oil inlet hole through a second oil way. According to the swash plate structure, along with the stress change of the swash plate, the force and the moment born by the swash plate are always in dynamic balance, so that the unbalance loading problem is avoided; and secondly, under the action of oil film lubrication and supporting, the friction coefficient of the rotating surface of the swash plate is small enough, and the bearing capacity and the rotating flexibility of the swash plate are effectively improved. The swash plate is simple in structure, low in manufacturing cost, long in service life and easy to install and maintain.
Description
Technical Field
The utility model relates to the technical field of aviation variable plunger pumps or variable plunger motors, in particular to a swash plate structure with oil film lubrication and floating support.
Background
In the existing aviation variable plunger pump or variable plunger motor, a swash plate generally adopts bearings to support trunnions at two sides of a high-pressure area and a low-pressure area of the swash plate. Because the swash plates in the high pressure area and the low pressure area are stressed differently, the bearing loads on two sides are different, and the unbalance loading phenomenon occurs, so that the service life of the bearing and the flexibility of a rotating surface are seriously influenced. The bearing is generally a sliding bearing or a rolling bearing, the friction coefficient of the sliding bearing is large, and the swash plate is more easily inflexible to rotate due to the unbalance loading problem; although the friction coefficient of the rolling bearing is small, the bearing capacity of the rolling bearing in a limited space is low, and the bearing is easy to fail due to unbalance loading.
Disclosure of Invention
The utility model aims to provide a swash plate structure with oil film lubrication and floating support, which is used for solving the problems of poor bearing capacity, large friction coefficient and unbalance load of a swash plate support structure in the prior art.
In order to realize the task, the utility model adopts the following technical scheme:
a swash plate structure with oil film lubrication and floating support comprises a swash plate, wherein a rotating surface is arranged at the bottom of the swash plate;
the surface of the swash plate is a working surface and is divided into a high-pressure area and a low-pressure area; the high-pressure area is provided with a high-pressure oil inlet, the bottom of the rotating surface below the high-pressure area is provided with a first oil groove along the arc direction, and the high-pressure oil inlet is communicated with the first oil groove through a first oil way; and a second oil groove is formed in the bottom of the rotating surface below the low-pressure area along the arc direction, and is communicated with the high-pressure oil inlet hole through a second oil way.
Furthermore, the high-pressure area and the low-pressure area are symmetrically arranged on two sides of the working surface on the swash plate.
Further, the width of first oil groove and along arc to length all be not less than the second oil groove to make the active area of first oil groove be greater than the active area of second oil groove.
Furthermore, the first oil groove and the second oil groove are arc-shaped grooves formed in the surface of the rotating surface.
Furthermore, the bottom of the rotating surface is of a circular arc structure and is used for movably assembling the swash plate in the plunger pump.
Furthermore, the swash plate is assembled on a support in the plunger pump through a rotating surface, and a slipper of the plunger pump performs circular motion on a working surface of the swash plate;
the surface of the support is provided with an arc groove matched with the rotating surface; and high-pressure oil in a plunger in the plunger pump enters the high-pressure oil inlet through the oil hole on the sliding shoe.
Further, the plunger pump comprises a main shaft, a support, a variable displacement mechanism, a cylinder body, a valve plate, a plunger and a sliding shoe, wherein:
the main shaft penetrates through the support and the swash plate and is connected with the cylinder body to transmit the torque of the engine to the cylinder body; the plunger is arranged in the cylinder body and moves in a reciprocating linear way, and the lower end of the plunger penetrates through the cylinder body and is connected with the sliding shoe in a spherical hinge mode; the valve plate is fixed on the rear cover of the plunger pump through a positioning pin, and the surface of the valve plate is in contact with the top surface of the cylinder body.
Compared with the prior art, the utility model has the following technical characteristics:
according to the swash plate structure designed by the utility model, along with the stress change of the swash plate, the force and the moment born by the swash plate are always in dynamic balance, so that the problem of unbalance loading is avoided; and secondly, under the action of oil film lubrication and supporting, the friction coefficient of the rotating surface of the swash plate is small enough, and the bearing capacity and the rotating flexibility of the swash plate are effectively improved. The swash plate is simple in structure, low in manufacturing cost, long in service life and easy to install and maintain.
Description of the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the present invention installed in a plunger pump;
the reference numbers in the figures illustrate: the variable displacement hydraulic pump comprises a main shaft 1, a support 2, a variable displacement mechanism 3, a cylinder 4, a valve plate 5, a plunger 6, a slipper 7, a swash plate 8, a high-pressure oil inlet hole 81, a first oil groove 82, a second oil groove 83 and a rotating surface 84.
Detailed Description
Referring to fig. 1, the utility model discloses a swash plate structure with oil film lubrication and floating support, which comprises a swash plate 8, wherein a rotating surface 84 is arranged at the bottom of the swash plate 8; the surface of the swash plate 8 is a working surface and is divided into a high-pressure area and a low-pressure area; wherein, a high-pressure oil inlet hole 81 is arranged on the high-pressure area, a first oil groove 82 is arranged at the bottom of the rotating surface 84 below the high-pressure area along the arc direction, and the high-pressure oil inlet hole 81 is communicated with the first oil groove 82 through a first oil way; a second oil groove 83 is formed in the bottom of the rotating surface 84 below the low-pressure area along the arc direction, and the second oil groove 83 is communicated with the high-pressure oil inlet hole 81 through a second oil path; alternatively, the first oil groove 82 and the second oil groove 83 are arc-shaped grooves formed on the surface of the rotating surface 84; the high-pressure area and the low-pressure area are symmetrically arranged on two sides of the working surface on the swash plate 8.
The design idea of the utility model is that high-pressure oil is introduced into the first oil groove 82 and the second oil groove 83 on the rotating surface 84 of the swash plate 8, and the acting area of the oil grooves is adjusted according to the stress conditions of the high-pressure area and the low-pressure area, so that the stress of the swash plate 8 is in static pressure balance, the oil film lubrication and floating support functions of the swash plate 8 are realized, the generation of unbalance loading phenomenon is avoided, the friction coefficient is reduced, and the flexibility of rotation is improved; the rotating surface 84 at the bottom of the swash plate 8 is of a semicircular structure, the acting area and the supporting rigidity are large, the bearing capacity is improved under the condition of oil film lubrication and supporting, and the problems that the friction coefficient of the traditional sliding bearing is large and the bearing capacity of the rolling bearing is insufficient are solved.
In order to more clearly explain the structure and features of the present invention, a description will be given below of a case where the swash plate 8 structure of the present invention is applied to a plunger pump, in conjunction with a specific example.
Fig. 2 is a schematic structural view of the plunger pump; the swash plate 8 is arranged in a plunger pump, and the plunger pump comprises a main shaft 1, a support 2, a variable mechanism 3, a cylinder block 4, a port plate 5, a plunger 6 and a sliding shoe 7;
the swash plate 8 is arranged on the support 2, the surface of the swash plate 8 is a working surface of the slipper 7, and the slipper 7 performs circular motion on the working surface of the swash plate 8; the main shaft 1 penetrates through the support 2 and the swash plate 8 and is connected with the cylinder block 4, the torque of an engine is transmitted to the cylinder block 4 to drive the cylinder block 4 to rotate, the plunger 6 is installed in the cylinder block 4 to do reciprocating linear motion, and the lower end of the plunger 6 penetrates through the cylinder block 4 and is connected with the sliding shoe 7 in a spherical hinge mode; the valve plate 5 is fixed on the rear cover of the plunger pump through a positioning pin, and the surface of the valve plate 5 is contacted with the top surface of the cylinder body 4; high-pressure oil in the plunger 6 enters the high-pressure oil inlet hole 81 through the oil hole on the sliding shoe 7, and the variable mechanism 3 is connected to the edge of the swash plate 8; the working principle of the plunger pump part is the prior art and is not described in detail herein.
An arc groove is formed in the support 2, the bottom of the swash plate 8 is a rotating surface 84, the rotating surface 84 is of an arc structure, and the rotating surface 84 is assembled in the arc groove in the support 2 and can rotate in the arc groove.
In this embodiment, the swash plate 8 has a disc-shaped structure, and a through hole for passing through the main shaft 1 is formed in the middle of the swash plate.
The width of first oil groove 82 and the length along the arc are all not less than second oil groove 83 to guarantee that the area of action of first oil groove 82 is greater than the area of action of second oil groove 83.
The working principle of the utility model is as follows:
the high-pressure region first oil groove 82 has a large area of action and the low-pressure region second oil groove 83 has a small area of action, and the purpose is to balance the large force in the high-pressure region and the small force in the low-pressure region, and to place the swash plate 8 in a floating support state. High-pressure oil in the high-pressure area first oil groove 82 and the low-pressure area second oil groove 83 leaks from the edges of the oil grooves and enters the rotating surface 84 on the high-pressure side and the rotating surface 84 on the low-pressure side, so that oil film lubrication is realized on the rotating surfaces 84 on the high-pressure side and the low-pressure side, the friction coefficient is reduced, and the bearing capacity and the rotation flexibility are improved.
The above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the preferred embodiments, the scope of the present invention is not limited thereto, and any person skilled in the art can modify the detailed embodiments of the present invention or make equivalent substitutions for some technical features within the technical scope of the present invention disclosed by the present invention without departing from the spirit of the technical solution of the present invention, and the modifications or substitutions should be covered within the technical scope of the present invention claimed.
Claims (7)
1. A swash plate structure with oil film lubrication and floating support is characterized by comprising a swash plate (8), wherein the bottom of the swash plate (8) is provided with a rotating surface (84);
the surface of the swash plate (8) is a working surface and is divided into a high-pressure area and a low-pressure area; the high-pressure area is provided with a high-pressure oil inlet hole (81), the bottom of a rotating surface (84) below the high-pressure area is provided with a first oil groove (82) along the arc direction, and the high-pressure oil inlet hole (81) is communicated with the first oil groove (82) through a first oil way; and a second oil groove (83) is formed in the bottom of the rotating surface (84) below the low-pressure area along the arc direction, and the second oil groove (83) is communicated with the high-pressure oil inlet hole (81) through a second oil way.
2. The oil film lubricated floating supported swash plate structure of claim 1, wherein the high pressure zone and the low pressure zone are symmetrically located on both sides of the upper working surface of the swash plate (8).
3. The oil film lubricated and floatingly supported swash plate structure of claim 1, wherein the width and the length in the arc direction of said first oil groove (82) are not smaller than those of said second oil groove (83), so that the active area of said first oil groove (82) is larger than that of said second oil groove (83).
4. The oil film lubrication and floating support swash plate structure of claim 1, wherein the first oil groove (82) and the second oil groove (83) are arc-shaped grooves opened on the surface of the rotating surface (84).
5. The oil film lubrication and floating support swash plate structure according to claim 1, wherein the bottom of the rotating surface (84) is in a circular arc shape for movably fitting the swash plate (8) in the plunger pump.
6. The oil film lubrication and floating supported swash plate structure of claim 1, wherein the swash plate (8) is mounted on a support (2) in a plunger pump through a rotating surface (84), and a slipper (7) of the plunger pump makes a circular motion on a working surface of the swash plate (8);
the surface of the support (2) is provided with an arc groove matched with the rotating surface (84); high-pressure oil in a plunger (6) in the plunger pump enters the high-pressure oil inlet hole (81) through an oil hole in the sliding shoe (7).
7. The oil film lubricated and floatingly supported swash plate structure of claim 1, wherein said plunger pump comprises a main shaft (1), a support (2), a variable mechanism (3), a cylinder block (4), a port plate (5), a plunger (6) and a slipper (7), wherein:
the swash plate (8) is arranged on the support (2), and the main shaft (1) penetrates through the support (2) and the swash plate (8) to be connected with the cylinder body (4) and transmit the torque of the engine to the cylinder body (4); the plunger (6) is arranged in the cylinder body (4) to do reciprocating linear motion, and the lower end of the plunger (6) penetrates through the cylinder body (4) to be connected with the sliding shoe (7) in a spherical hinge mode; the valve plate (5) is fixed on the rear cover of the plunger pump through a positioning pin, the surface of the valve plate (5) is contacted with the top surface of the cylinder body (4), and the variable mechanism (3) is connected to the edge of the swash plate (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121410835.6U CN215762063U (en) | 2021-06-23 | 2021-06-23 | Swash plate structure of oil film lubrication and floating support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121410835.6U CN215762063U (en) | 2021-06-23 | 2021-06-23 | Swash plate structure of oil film lubrication and floating support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215762063U true CN215762063U (en) | 2022-02-08 |
Family
ID=80102016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121410835.6U Active CN215762063U (en) | 2021-06-23 | 2021-06-23 | Swash plate structure of oil film lubrication and floating support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215762063U (en) |
-
2021
- 2021-06-23 CN CN202121410835.6U patent/CN215762063U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109236598B (en) | Plunger pump swash plate valve plate assembly | |
| CN111692063B (en) | Floating swash plate follow-up spherical hinge hinged conical plunger variable pump/motor rotating assembly | |
| JPS644072B2 (en) | ||
| CN101451516A (en) | 50Mpa self complementing electro-hydraulic proportional controlled axial direction plunger variable displacement pump | |
| CN215762063U (en) | Swash plate structure of oil film lubrication and floating support | |
| CN201096061Y (en) | 50Mpa self complementing type electrohydraulic proportional control axial plunger variable pump | |
| US6368071B1 (en) | High pressure fuel pump | |
| US7553085B2 (en) | Fluid bearing and method of operation | |
| CN114934886A (en) | Ultrahigh-pressure high-speed swash plate type axial plunger variable displacement pump | |
| CN2299182Y (en) | Swinging-cylinder hydraulic motor | |
| CN114263584A (en) | Tandem piston pump | |
| JPH09209920A (en) | Variable displacement swash plate type hydraulic machine, and static hydraulic pressure transmission device | |
| KR101979027B1 (en) | Variable Displacement Swash Plate Type Compressor | |
| CN114641612B (en) | Inclined shaft plunger type variable hydraulic motor pump | |
| CN110761977A (en) | Oil suspension type cylinder seat bearing structure | |
| CN2821203Y (en) | Inclined disc type axial plunger pump | |
| CN211343282U (en) | Oil suspension type cylinder seat bearing structure | |
| CN2688933Y (en) | Volumetric vortex fluid compressor with radial compensating mechanism | |
| CN114607577B (en) | Symmetrically arranged synchronous quantitative axial plunger pump and motor | |
| CN216198726U (en) | Full static pressure floating supporting sliding disc pair and sliding disc type plunger pump comprising same | |
| CN215170747U (en) | Compressor oil supply structure and scroll compressor | |
| CN114382672B (en) | Swash plate sliding shoe compression structure in hydraulic plunger pump and plunger pump with same | |
| CN213743645U (en) | Pump device and vehicle | |
| CN214007502U (en) | Scroll compressor, air conditioning equipment and vehicle | |
| CN117006010A (en) | Floating swash plate type axial plunger pump based on return disc rotation driving |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |