CN101539130B - Hydraulic clino-axial piston pump or motor - Google Patents
Hydraulic clino-axial piston pump or motor Download PDFInfo
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- CN101539130B CN101539130B CN2009100499146A CN200910049914A CN101539130B CN 101539130 B CN101539130 B CN 101539130B CN 2009100499146 A CN2009100499146 A CN 2009100499146A CN 200910049914 A CN200910049914 A CN 200910049914A CN 101539130 B CN101539130 B CN 101539130B
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Abstract
The invention relates to an improved hydraulic clino-axial piston pump or a motor, comprising a sealing working volume which is composed of a shell, a plunger piston land, a cylinder body, plunger pistons, a valve plate and a pump cover. The plunger piston land is integrated with a transmission shaft which is arranged at a ball bearing and a cone bearing in the shell, an inclination is formed between the plunger piston land and a center plunger piston, seven plunger pistons are arranged in plunger piston holes of the cylinder body, the balls of the plunger pistons match with ball sockets of the plunger piston land, the balls are connected with the plunger piston land by a set plate, the valve plate is arranged on the pump cover and the pump cover is connected with the shell; the plunger piston of the invention is provided with a cone section, the forward part of the cone section is a ball, grooves are arranged on the back part of the cone section to place plunger rings, and the side inclination of the cone section is 3 degrees 20' to 3 degrees 21'30''. The invention reduces noises (the measured value of the noise is less than 80dB), the overall efficiency of the invention reaches 90% and the lifetime of the invention is above 6000 hours.
Description
Technical field
The present invention relates to hydraulic pressure, machinery, electron controls technology field, relate in particular to a kind of hydraulic clino-axial piston pump or motor.
Background technique
Hydraulic axial piston pump or motor, because that it has a volume is little, in light weight, specific power is big, is easy to advantages such as control, is widely used at present in the various hydraulic systems.
In hydraulic axial piston pump or motor, the inclined shaft axial piston pump is a kind of high-pressure large-displacement axial piston pump, its structure characteristic and the key technical indexes are: volume is little, compact structure is simple, manufacturability is relatively good, and pressure reaches as high as 40Mpa, and rotating speed reaches as high as 6300rpm, the total efficiency height, life-span is about 5000 hours, is that the world today is more advanced, a kind of axial piston pump of reliable performance.Owing to have wide range of applications, be again to make the running mechanism integral device reduce the power source of volume, so this inclined shaft axial piston pumps of a large amount of employings of some countries of the countries in the world such as the U.S., Japan, India, China and Europe.
Present inclined shaft axial piston pump is mainly by housing, the plunger land, cylinder body, plunger, thrust plate and pump cover are formed the seal operation volume, plunger land and transmission shaft are made of one, be installed on the ball bearing and cone bearing in the housing, the plunger land has an inclination angle with the plunger that is contained in the cylinder body center hole, 7 plungers are housed in the plunger hole of cylinder body, the bulb of plunger cooperates with ball-and-socket on the plunger land, the bulb of plunger connects with the plunger land by the backhaul dish, in the center hole of cylinder body, plunger is housed, prefastening force spring is equipped with in the bottom that is contained in the plunger in the cylinder body center hole, thrust plate is installed on the pump cover, pump cover is connected with housing, and the bi-side of pump cover are provided with filler opening and oil outlet; On housing, offer discharge orifice.
But plunger is in the plunger hole of cylinder body in the fore and aft motion process in the existing inclined shaft axial piston pump, plunger can't remain and the hole wall of plunger hole between tangent, thereby cause the resistance of plunger fore and aft motion to increase, cause the delivery efficiency of inclined shaft axial piston pump to descend, noise increases, the lost of life.
Summary of the invention
Technical problem to be solved by this invention is that the defective that overcomes prior art provides a kind of delivery efficiency height, noise to reduce hydraulic clino-axial piston pump or motor that the life-span prolongs.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of hydraulic clino-axial piston pump or motor, by housing, the plunger land, cylinder body, plunger, thrust plate and pump cover are formed the seal operation volume, plunger land and transmission shaft are made of one, be installed on the ball bearing and cone bearing in the housing, the plunger land has an inclination angle with the plunger that is contained in the cylinder body center hole, 7 plungers are housed in the plunger hole of cylinder body, the bulb of plunger cooperates with ball-and-socket on the plunger land, the bulb of plunger connects with the plunger land by the backhaul dish, in the center hole of cylinder body, plunger is housed, the plunger base that is contained in the cylinder body center hole is equipped with prefastening force spring, thrust plate is installed on the pump cover, pump cover is connected with housing, and the bi-side of pump cover are provided with filler opening and oil outlet; On housing, offer discharge orifice; Described plunger comprises a conical section, and the front end of conical section is a bulb, and the rear end of conical section has groove, is used to place plunger ring, it is characterized in that, the laterally inclined degree of described conical section be 3 ° 20 ' to 3 ° 21 ' 30 ".
Beneficial effect of the present invention is:
Plunger of the present invention all the time can be tangent with the plunger hole of cylinder body in the telescopic slide process, makes the resistance of telescopic slide reduce, thereby reduced noise (measured value is less than 80dB), and total efficiency reaches 90%, and the life-span is more than 6000 hours.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of hydraulic clino-axial piston pump of the present invention or motor.
Fig. 2 is the piston structure schematic representation of hydraulic clino-axial piston pump of the present invention or motor.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, the seal operation volume that hydraulic clino-axial piston pump or motor are made up of housing 1, plunger land 2, cylinder body 3, plunger 4, thrust plate 5 and pump cover 6, plunger land 2 is made of one with transmission shaft 7, is installed on the ball bearing 13 and cone bearing 14 in the housing 1.Plunger land 2 has an inclination angle with the plunger 8 that is contained in the cylinder body center hole, and 7 plungers 4 are housed in the plunger hole 9 of cylinder body 3, and the bulb of plunger 4 cooperates with ball-and-socket on the plunger land 2, and connects with plunger land 2 by backhaul dish 11.Plunger 8 is housed in the center hole of cylinder body 3, prefastening force spring 12 is equipped with in the bottom that is contained in the plunger 8 in the cylinder body center hole, the bulb that spring 12 will be contained in plunger 8 in the cylinder body center hole and 7 plungers 4 is pressed in the ball-and-socket on the plunger land 2, says that also an end sphere of cylinder body 3 tightly is pressed on the ball surface of thrust plate 5 simultaneously.Thrust plate 5 is installed on the pump cover 6, and pump cover 6 is connected with housing 1.Be provided with filler opening and oil outlet (not shown) in the bi-side of pump cover 6, on housing 1, have discharge orifice 15.Thrust plate 5 is designed to the sphere distributing construction with the surface of contact of cylinder body 3.
As shown in Figure 2, plunger 4 comprises a conical section 16, and the front end of conical section 16 is a bulb 17, and the rear end of conical section 16 has groove 18, is used to place plunger ring, the laterally inclined degree of conical section be 3 ° 20 ' to 3 ° 21 ' 30 ".Plunger 4 all the time can be tangent with the plunger hole 9 of cylinder body 3 in the telescopic slide process like this, makes the resistance of telescopic slide reduce, thereby reduced noise (measured value is less than 80dB), and total efficiency reaches 90%, and the life-span is more than 6000 hours.
Be provided with stair-stepping damping hole 10 at the center of plunger 4, the damping hole 10 of pressure oil by plunger 4 enters in the ball-and-socket on the plunger land 2 like this, bulb 17 to plunger 9 has formed certain reaction thrust, balances the impacting force of ball-and-socket on 17 pairs of plunger lands 2 of a big chunk bulb.
When transmission shaft 7 of the present invention and 2 rotations of plunger land, drive cylinder body 3 rotations by plunger 4, when plunger 4 stretches out, it is the pump oil suction that the low pressure window of fluid by filler opening and thrust plate 5 enters plunger 4 bottoms, and when transmission shaft 7 and plunger land 2 continue rotation, the fluid of plunger 4 bottoms is discharged by the high pressure window and the oil outlet on the pump cover 6 of thrust plate 5, oil extraction for pump, just forming suction, oil extraction respectively once like this when cylinder body rotates a circle, promptly is this pump delivery g, and the flow of this pump is Q=nq.The working principle of hydraulic axial piston motor is opposite with said process.
More than show and described basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in the foregoing description and the specification is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (1)
1. hydraulic clino-axial piston pump or motor, by housing, the plunger land, cylinder body, plunger, thrust plate and pump cover are formed the seal operation volume, plunger land and transmission shaft are made of one, be installed on the ball bearing and cone bearing in the housing, the plunger land has an inclination angle with the plunger that is contained in the cylinder body center hole, 7 plungers are housed in the plunger hole of cylinder body, the bulb of these 7 plungers cooperates with ball-and-socket on the plunger land respectively and connects with the plunger land by the backhaul dish, prefastening force spring is equipped with in the bottom that is contained in the plunger in the cylinder body center hole, thrust plate is installed on the pump cover, pump cover is connected with housing, and the bi-side of pump cover are provided with filler opening and oil outlet; On housing, offer discharge orifice; Plunger in the plunger hole of described cylinder body comprises a conical section, the front end of conical section is a bulb, the rear end of conical section has groove, be used to place plunger ring, it is characterized in that, the laterally inclined degree of described conical section be 3 ° 20 ' to 3 ° 21 ' 30 ", the center of the plunger in the plunger hole of described cylinder body is provided with stair-stepping damping hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100499146A CN101539130B (en) | 2009-04-24 | 2009-04-24 | Hydraulic clino-axial piston pump or motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100499146A CN101539130B (en) | 2009-04-24 | 2009-04-24 | Hydraulic clino-axial piston pump or motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101539130A CN101539130A (en) | 2009-09-23 |
| CN101539130B true CN101539130B (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100499146A Active CN101539130B (en) | 2009-04-24 | 2009-04-24 | Hydraulic clino-axial piston pump or motor |
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| CN (1) | CN101539130B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286314B (en) * | 2016-08-11 | 2018-06-26 | 武汉船用机械有限责任公司 | Latent liquid ballast pump |
| CN107701385A (en) * | 2017-09-07 | 2018-02-16 | 广州市华欣液压有限公司 | A kind of electric-hydraulic proportion formula plunger pump |
| CN110067723A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of sphere static pressure driving structure and bent axis type axial piston pump or motor comprising the structure |
| CN110067717B (en) * | 2018-05-22 | 2024-07-12 | 上海强田驱动技术有限公司 | Synchronous self-compensating flow distribution pair structure and swash plate type plunger pump or motor comprising same |
| CN110067721A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of hydrostatic driving structure and bent axis type axial piston pump or motor comprising the structure |
| CN110617190B (en) * | 2019-10-22 | 2022-10-11 | 朱荣辉 | Rotary piston type high-pressure pump with energy recovery function |
| CN111365208A (en) * | 2020-04-01 | 2020-07-03 | 辽宁工程技术大学 | Permanent magnet synchronous motor directly-driven oblique shaft type axial plunger pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201433866Y (en) * | 2009-04-24 | 2010-03-31 | 上海电气液压气动有限公司 | Inclined-shaft hydraulic plunger pump or a motor |
-
2009
- 2009-04-24 CN CN2009100499146A patent/CN101539130B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201433866Y (en) * | 2009-04-24 | 2010-03-31 | 上海电气液压气动有限公司 | Inclined-shaft hydraulic plunger pump or a motor |
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| CN101539130A (en) | 2009-09-23 |
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