Plane static pressure driving structure and inclined shaft plunger pump or motor comprising same

A technology of driving structure and driving spindle, which is applied in the direction of variable displacement pump parts, parts of pumping devices for elastic fluid, pumps, etc., can solve the problem of short service life, large pump or motor size, bearing machining accuracy and assembly accuracy Advanced problems, to achieve the effect of improving work reliability and working life, increasing working pressure and working speed, and improving the ratio of power per unit mass

Pending Publication Date: 2019-07-30
钟彪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inclined axis pump or motor also has its disadvantages: 1. It is difficult to change the variable. Because the swing cylinder or shell is used to realize the variable, the variable is more difficult and the response time of the variable is slow; 2. The service life is short, mainly due to the The service life of the drive spindle support bearing is generally 2,000 to 5,000 hours, which is far less than the life of the sliding shoe swash plate axial piston pump or motor (generally 5,000 to 10,000 hours)
[0004] Regardless of the use of radial thrust bearings or tapered roller bearings, there are the following technical difficulties: 1. Due to the large axial and radial forces on the bearings, especially the axial component force of the hydraulic pressure has a greater impact on the bearings, Therefore, problems such as surface peeling, wear, ablation, and creep often occur in bearings, w

Method used

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  • Plane static pressure driving structure and inclined shaft plunger pump or motor comprising same
  • Plane static pressure driving structure and inclined shaft plunger pump or motor comprising same
  • Plane static pressure driving structure and inclined shaft plunger pump or motor comprising same

Examples

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Example Embodiment

[0041] Example 1:

[0042] Such as Figure 2-7 Shown is an embodiment of the planar hydrostatic drive structure of the inclined axis plunger pump of the present invention. In the preferred embodiment shown, the inclined axis plunger pump or motor includes a driving spindle 10, a bearing 20, The housing 30, the lining plate 40, the drive plate 50, the pressure plate 60, the plunger 70, the cylinder 80, the central shaft 90, and the valve plate 100. The drive spindle axis 10C and the central axis axis 90C are at a certain angle, and the drive spindle 10 is supported by the housing 30 via a bearing 20 in a state where one end is provided inside the housing 30 and can rotate around its own axis. The other end surface of the drive spindle 10 is coaxially connected with the drive disc 50. A plurality of plunger support ball sockets 58 and a central shaft support ball socket 59 are provided on the end surface of the drive disc 50 facing the cylinder 80. The plunger support ball sockets...

Example Embodiment

[0067] Example 2:

[0068] Such as Figure 8-10 As shown, the inclined axis plunger pump or motor of the second embodiment of the present invention is shown. The difference from the first embodiment is the structure of the hydrostatic bearing surface of the drive plate 50 on the side connected to the drive spindle 10 and the clamping arrangement For the structure of the lining plate 40 between the drive disk 50 and the housing 30, other reference may be made to the structure described in the first embodiment.

[0069] Such as Figure 8 with 9 As shown, the structure of the liner 40 sandwiched between the drive disc 50 and the housing 30 is shown. At least one liner 40 is provided on the end face 41 of the liner that faces the drive disc 50 and faces the static pressure support surface of the drive disc. The high-pressure oil chamber 42, that is, only the high-pressure oil chamber 42 is provided. The high-pressure oil chamber 42 is intermittently communicated with the corresponding...

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Abstract

The invention discloses a plane static pressure driving structure and an inclined shaft plunger pump or a motor comprising the same. The plane static pressure driving structure comprises a driving main shaft and a driving disc, a static pressure supporting plane perpendicular to the axis of the driving main shaft is arranged on the end surface of one side, connected with the driving main shaft, ofthe driving disc, a lining plate used for supporting the driving disc is clamped between the static pressure supporting plane and a shell, the driving disc is provided with oil through holes which are in communication with plunger support ball sockets and static pressure supporting plane on the driving disc, and the oil through holes are used for introducing oil liquid into the part between the static pressure supporting plane and the end surface of the lining plate, so that the static pressure supporting plane and the lining plate end face form a static pressure oil film support in clearancefit, and the axial component force of hydraulic force is transmitted to the shell through the plane static pressure driving structure. According to the plane static pressure driving structure, the axial component force of the plunger hydraulic force can be transferred to the shell of the pump or the motor, so that the axial load of a bearing structure is greatly reduced, the technical requirements of a bearing are reduced, and the working reliability and the working life of the inclined shaft plunger pump or the motor are improved.

Description

technical field [0001] The invention belongs to the technical field of hydraulic transmission and control, and in particular relates to a planar static pressure drive structure and an inclined-axis plunger pump or motor comprising the structure. Background technique [0002] Axial piston pumps and motors are one of the most widely used hydraulic components in modern hydraulic transmission, among which hingeless inclined shaft pumps or motors and sliding shoe swash plate axial piston pumps or motors are the most widely used and the most widely used at present. There are two main types of axial piston pumps. These two pumps or motors are still in competition, and each is constantly improving and developing. Compared with sliding shoe swash plate axial piston pumps or motors, inclined shaft pumps or motors have the following advantages: 1. The shaft inclination angle is large, and the maximum inclination angle can reach 40°, so the displacement is increased and the power quali...

Claims

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Application Information

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IPC IPC(8): F04B1/20F04B1/24F04B53/00F03C1/253
CPCF03C1/0642F03C1/0644F04B1/2014F04B1/24
Inventor 钟彪
Owner 钟彪
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