CN212155137U

CN212155137U - Radial plunger pump capable of switching high-pressure output

Info

Publication number: CN212155137U
Application number: CN202020802718.3U
Authority: CN
Inventors: 刘之明
Original assignee: Shandong Taizhan Mechanical And Electrical Technology Co ltd
Current assignee: Shandong Taizhan Mechanical And Electrical Technology Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2020-12-15
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a can switch radial plunger pump of high-pressure output belongs to varactor formula pump technical field, and it includes pump case and working chamber, the motor is installed to the one end of pump case, characterized in that: the pump is characterized in that an adapter plate is arranged in the pump shell and fixed on a rotating shaft of the motor, the adapter plate is connected with a valve plate, the valve plate is eccentrically arranged in a working cavity, more than two plunger holes are formed in the valve plate, the inner ends of the plunger holes are communicated with the valve plate, the outer ends of the plunger holes are communicated with the working cavity, and plungers are arranged in the plunger holes; the fixed shaft is arranged in the valve plate and coaxially arranged with the rotating shaft, the valve cavity is divided into a first valve cavity and a second valve cavity which are equal to each other by the fixed shaft, the equal surfaces of the first valve cavity and the second valve cavity are overlapped with the symmetrical surface of the working cavity, a first liquid hole and a second liquid hole are formed in the fixed shaft, the first liquid hole is communicated with the first valve cavity, and the second liquid hole is communicated with the second valve cavity. This changes the pressure of the first port chamber and the second port chamber by the change of the rotational direction.

Description

Radial plunger pump capable of switching high-pressure output

Technical Field

The utility model belongs to the technical field of the varactor formula pump, concretely relates to radial plunger pump that can switch high-pressure output.

Background

With the continuous improvement of living standard of people, the automobile becomes a tool for most people to go out, thereby promoting the unprecedented development of automobile technology. Therefore, the electric skylight and the electric window swinging technology emerge, and a more comfortable and convenient riding environment is brought to people. In automotive applications, people often store items to be carried, particularly large items, in a trunk, making the trunk door (also known as a tailgate) a component that is used more frequently.

At present, a tail gate is basically opened manually. Thus, it is assumed that the automatic opening and closing of the tailgate is realized as in the case of the power window. Chinese patent application 201610409660.4 discloses a control mechanism for opening and closing a tailgate of a vehicle, in which when a hydraulic pump outputs hydraulic oil to an oil chamber of a strut cylinder through an oil outlet, the strut cylinder performs an extension action to jack up the tailgate; when the hydraulic oil in the oil cavity of the stay bar oil cylinder flows back to the oil return opening, the stay bar oil cylinder contracts to pull the tail gate back. Therefore, the oil outlet and the oil return port of the hydraulic cylinder are communicated with the oil cavity of the supporting oil cylinder, and the work is extremely unreliable.

The applicant imagines that two oil ports of the hydraulic cylinder are correspondingly connected with a rod cavity and a rodless cavity of the support oil cylinder, so that the two oil ports alternately realize high-pressure output, and not only can the working reliability of the support oil cylinder be improved, but also the working efficiency of the support oil cylinder can be improved. In order to manufacture the hydraulic cylinder, a hydraulic source for alternately outputting high pressure is the technical problem to be solved firstly.

Disclosure of Invention

The utility model aims to solve the technical problem that a can switch high-pressure output's radial plunger pump is provided, can realize the switching of same hydraulic pressure mouth high-low pressure operating condition.

In order to solve the technical problem, the technical scheme of the utility model is that: the design one kind can switch the radial piston pump of the high-pressure output, including pump case and working chamber, the one end installation motor of the pump case, its characterized in that: the pump is characterized in that an adapter plate is arranged in the pump shell and fixed on a rotating shaft of a motor, the adapter plate is connected with a valve plate, the valve plate is eccentrically arranged in a working cavity, a valve cavity is formed in the valve plate, a fixed shaft is arranged in the valve cavity and coaxially arranged with the rotating shaft, the fixed shaft divides the valve cavity into a first valve cavity and a second valve cavity which are equal, the opposite surfaces of the first valve cavity and the second valve cavity are overlapped with the symmetrical surface of the working cavity, a first liquid hole and a second liquid hole are formed in the fixed shaft, the first liquid hole is communicated with the first valve cavity, and the second liquid hole is communicated with the second valve cavity;

more than two plunger holes are also formed in the valve plate, the inner ends of the plunger holes are communicated with the valve chamber, the outer ends of the plunger holes are communicated with the working chamber, and plungers are assembled in the plunger holes.

Preferably, the adapter plate is provided with a connecting hole, the valve plate is fixed with a pin shaft, and the pin shaft is arranged in the connecting hole.

Preferably, the pin shaft is provided with an elastic body, and the pin shaft is arranged in the connecting hole through the elastic body.

Preferably, the elastic body is a spring.

Preferably, the adapter plate is provided with more than two connecting holes which are uniformly distributed along the circumferential direction of the rotating shaft.

Preferably, the working chamber is provided with a bearing, and the bearing is positioned at the corresponding position of the plunger hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the valve plate is arranged in the working cavity in an eccentric manner, so that the working cavity except the valve plate forms an eccentric cavity, the first valve cavity and the second valve cavity are arranged in an equivalent state relative to the symmetrical surface of the eccentric cavity, the pressure balance state of the first valve cavity and the pressure balance state of the second valve cavity are broken through the rotation of the valve plate, the pressure of the first valve cavity and the pressure of the second valve cavity are changed through the change of the rotation direction, and then the flow direction and the pressure state of liquid in the first liquid hole and the second liquid hole are switched.

2. The adapter plate is provided with the connecting hole, the valve plate is fixed with the pin shaft, the pin shaft is installed in the connecting hole, and the valve plate is driven to rotate through the pin shaft.

3. The pin shaft is provided with the elastic body and is arranged in the connecting hole through the elastic body, so that the assembly and the disassembly between the adapter plate and the port plate are convenient on one hand; on the other hand, the connection between the two is changed into soft connection, so that the transmission noise between the two is reduced, the hard abrasion is reduced, and the service life of the two is prolonged.

4. Because the adapter plate is provided with more than two connecting holes which are uniformly distributed along the circumferential direction of the rotating shaft, the pin shaft can be connected into any connecting hole, the installation range of the adapter plate is enlarged, if the connecting hole is damaged, only another connecting hole needs to be replaced, the whole adapter plate does not need to be replaced, and consumable materials are saved.

5. Because the bearing is assembled in the working cavity and is positioned at the corresponding position of the plunger hole, the wear resistance of the peripheral wall of the working cavity can be increased, and the standard bearing is selected, so that the cost performance is high.

6. The utility model discloses simple structure can realize the switching of same hydraulic pressure mouth high-low pressure operating condition, then supports the reliable telescoping control of support cylinder, accomplishes the automatic reliable switch of tail-gate, is convenient for in industry popularize and apply.

Drawings

FIG. 1 is an exploded perspective view of the present invention;

FIG. 2 is a view in the direction A of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 2;

FIG. 4 is an enlarged cross-sectional view of C-C of FIG. 2;

FIG. 5 is a cross-sectional view taken along line D-D of FIG. 4;

fig. 6 is a cross-sectional view E-E of fig. 4.

The labels in the figure are: 1. a motor; 2. a pump housing; 3. a rotating shaft; 4. a switching disk; 5. connecting holes; 6. a bearing; 7. a valve plate; 8. a first liquid hole; 9. a fixed shaft; 10. an elastomer; 11. a working chamber; 12. a pin shaft; 13. a second liquid hole; 14. a plunger; 15. a second port chamber; 16. a first port chamber.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model discloses to be close to 3 central one sides definitions of pivot for the inboard, will keep away from 3 central opposite sides definitions of pivot for the outside correspondingly.

As shown in fig. 1 and 2, the utility model discloses at one end installation motor 1 of pump case 2, set up switching dish 4 in the pump case 2, switching dish 4 is fixed in motor 1's pivot 3, has seted up eight connecting holes 5 on the switching dish 4, and eight connecting holes 5 are along the circumference evenly distributed of pivot 3. As shown in fig. 6, a pin 12 is fixed to the port plate 7, an elastic body 10 is fitted to the pin 12, and the pin 12 is fitted into the coupling hole 5 through the elastic body 10. As shown in fig. 3, 4 and 5, a port chamber is opened in the port plate 7, a fixed shaft 9 is installed in the port chamber, the fixed shaft 9 is coaxially arranged with the rotating shaft 3, and the fixed shaft 9 divides the port chamber into a first port chamber 16 and a second port chamber 15 which are opposite. A first liquid hole 8 and a second liquid hole 13 are formed in the fixed shaft 9, the first liquid hole 8 is communicated with a first flow distribution cavity 16, and the second liquid hole 13 is communicated with a second flow distribution cavity 15. The port plate 7 is eccentrically arranged in the working chamber 11 of the plunger pump, so that the working chamber outside the port plate 7 forms an eccentric chamber, and the equivalent plane of the first port chamber 16 and the second port chamber 15 coincides with the symmetry plane of the eccentric chamber. Five plunger holes which are uniformly distributed along the circumferential direction of the fixed shaft 9 are formed in the valve plate 7, the axial direction of each plunger hole is consistent with the radial direction of the valve plate 7, the inner end of each plunger hole is communicated with the valve chamber, the outer end of each plunger hole is communicated with the working chamber 11, and a plunger 14 is assembled in each plunger hole.

In order to increase the wear resistance of the peripheral wall of the working chamber 11, a bearing 6 is fitted in the working chamber 11, the bearing 6 being located at a corresponding position of the plunger bore.

The working process of the utility model is as follows:

when the motor 1 rotates clockwise, the switching disc 4 drives the valve plate 7 to rotate, under the action of centrifugal force, the outer end of the plunger 14 is close to the inner wall of the bearing 6, so that the first valve chamber 16 is gradually reduced, the second valve chamber 15 is gradually increased, liquid in the first valve chamber 16 is compressed, the pressure is increased, the liquid is extruded from the first liquid hole 8, and high pressure is output from the first liquid hole 8; at the same time, the liquid in the second port chamber 15 is released, and a negative pressure is relatively formed, and the liquid is sucked in, and a low pressure is inputted from the second liquid hole 13, thus completing the pressurization of the liquid. When the motor 1 rotates anticlockwise, the working conditions of the first port chamber 16 and the second port chamber 15 are just opposite to the above, so that the low pressure is input into the first liquid hole 8, the high pressure is output from the second liquid hole 13, and the switching of the high pressure and the low pressure is completed.

The elastic body 10 may be a spring, or may be a member having an elastic function such as rubber, as long as it has elasticity, and the structure thereof is not particularly limited.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a can switch radial plunger pump of high-pressure output, includes pump case and working chamber, the one end installation motor of pump case, its characterized in that: the pump is characterized in that an adapter plate is arranged in the pump shell and fixed on a rotating shaft of a motor, the adapter plate is connected with a valve plate, the valve plate is eccentrically arranged in a working cavity, a valve cavity is formed in the valve plate, a fixed shaft is arranged in the valve cavity and coaxially arranged with the rotating shaft, the fixed shaft divides the valve cavity into a first valve cavity and a second valve cavity which are equal, the opposite surfaces of the first valve cavity and the second valve cavity are overlapped with the symmetrical surface of the working cavity, a first liquid hole and a second liquid hole are formed in the fixed shaft, the first liquid hole is communicated with the first valve cavity, and the second liquid hole is communicated with the second valve cavity;

2. The radial piston pump capable of switching high pressure output according to claim 1, wherein: the adapter plate is provided with a connecting hole, the valve plate is fixed with a pin shaft, and the pin shaft is arranged in the connecting hole.

3. The radial piston pump capable of switching high pressure output according to claim 2, wherein: the pin shaft is provided with an elastic body and is arranged in the connecting hole through the elastic body.

4. The radial piston pump capable of switching high pressure output according to claim 3, wherein: the elastic body is a spring.

5. The radial piston pump capable of switching high pressure output according to claim 2, wherein: the adapter plate is provided with more than two connecting holes which are uniformly distributed along the circumferential direction of the rotating shaft.

6. The radial plunger pump capable of switching a high pressure output according to any one of claims 1 to 5, wherein: and a bearing is assembled in the working cavity and is positioned at the corresponding position of the plunger hole.