CN201196146Y - Cambered axle type spherical surface valve axial plunger variable displacement pump - Google Patents
Cambered axle type spherical surface valve axial plunger variable displacement pump Download PDFInfo
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- CN201196146Y CN201196146Y CNU2008201126651U CN200820112665U CN201196146Y CN 201196146 Y CN201196146 Y CN 201196146Y CN U2008201126651 U CNU2008201126651 U CN U2008201126651U CN 200820112665 U CN200820112665 U CN 200820112665U CN 201196146 Y CN201196146 Y CN 201196146Y
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Abstract
The utility model discloses a bend shaft sphere port axial plunger variable pump for resolving the easy damage problem of the port plate of the prior high pressure axial plunger variable pumps, which comprises a shell, an inclined disc, a rotor, plungers, a port plate and a pump cover to form an enclosed working capacity, wherein the inclined disc is integrated with a transmission shaft to be arranged on a ball bearing and a cone bearing in the shell, the inclined disc has a tilt angle gamma with the central plunger, the plunger holes of the rotor are provided with 7 plungers whose ball heads are fit with the ball cups on the inclined disc and are connected with the inclined disc via a return disc, the central hole of the rotor is provided with the central plunger whose bottom is provided with a pre-compression spring, the port plate is arranged on the pump cover connected with the shell, a variable mechanism is provided in the pump cover whose two side surfaces are provided with an oil inlet and an oil outlet, the surface of the port plate is provided with a static pressure groove provided with a hole which is communicated with a high pressure window via an adjustable damper. The bend shaft sphere port axial plunger variable pump has small volume, high pressure, low noise, long service life and high working efficiency.
Description
Technical field
The utility model relates to hydraulic pressure, machinery, electron controls technology field, a kind of specifically bent shaft type sphere ported axial plunger variable displacement pump.
Background technique
There is the bent shaft type shaft orientation plunger variable pump in two units that have only at present German BOSCH-REXROTH company both at home and abroad and introduce with BOSCH-REXROTH company, it belongs to the high-pressure large-displacement shaft orientation plunger variable pump, its structure characteristic and the key technical indexes are: volume is little, compact structure is simple, manufacturability is relatively good, pressure can reach 32Mpa to 35Mpa, rotating speed is 2500rpm, noise is 84dB, total efficiency is 86%, life-span is 4500 to 5000 hours, is that the world today is more advanced, a kind of shaft orientation plunger variable 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 some countries of the countries in the world such as the U.S., Britain, Japan, India, China and Europe are most of from the import of German BOSCH-REXROTH company, machinery such as China's engineering machinery such as excavator, bulldozer, crane all are badly in need of a large amount of this power sources, especially Petro-Chemical Machinery, metal forming machinery, steel rolling equipment, mining machinery etc., annual import volume is high about 20,000, and quick growth trend is arranged.At present its technical performance index of similar products of producing of China does not also reach requirements such as steel industry, engineering machinery, also wants long-term dependence on import, because the import cycle reached more than half a year, and the import price height, has a strong impact on and produces and development.
Domestic and international existing high pressure shaft orientation plunger variable pump all has the problem of thrust plate burning dish.During as rotor and thrust plate friction, because rotor is excessive to the impacting force of thrust plate, can not control again, cause thrust plate serious wear and burning dish, also cause the backhaul adjustment debit bad, the plunger ball piston shoes constantly change at the stator surface elliptic motion trace, cause plunger ball connecting rod piston shoes to the stator surface quick abrasion, it is unreasonable to add on piston shoes plenum chamber and the plunger ball resistance device design of leading to piston shoes, and the piston shoes head pushes away minimizing to plunger ball counter, makes piston shoes faster to the stator surface wearing and tearing.Defectives such as in addition, because the thrust plate eccentric wear causes plunger ball movement process in plunger hole poor to neutrality, cause plunger ball and plunger hole lateral force excessive, make the inner chamber fastness quick abrasion of entire pump, volumetric efficiency reduces, and the life-span is short.
The model utility content
The purpose of this utility model provides a kind of bent shaft type sphere ported axial plunger variable displacement pump, to solve the easily problem of burning dish of thrust plate that existing high pressure shaft orientation plunger variable pump exists.
The utility model is by housing, swash plate, rotor, plunger, thrust plate and pump cover are formed the seal operation volume, swash plate and transmission shaft are made of one, be installed on the ball bearing and cone bearing in the housing, swash plate and newel are plugged with a tilt angle gamma, 7 plungers are housed in the plunger hole of rotor, the bulb of plunger cooperates with ball-and-socket on the swash plate, the bulb of plunger connects with swash plate by the backhaul dish, the center plunger is housed in the centre of rotor hole, the center plunger base is equipped with gives the impacting force spring, and thrust plate is installed on the pump cover, and pump cover is connected with housing, be provided with stroking mechanism in the pump cover, the bi-side of pump cover are provided with filler opening and oil outlet; Have the static pressure groove on plane valving surface, be provided with the hole on the static pressure groove, the hole communicates with the high pressure window by adjustable damper.
The utility model is for the main fastness of pump, rotor and thrust plate have been taked static balance technology and pressure and gap compensation method, make rotor thrust plate and rotor surface of contact film lubrication all the time in rotary course, reduced the lateral force of rotor and plunger ball simultaneously, added circular hole at the two triangular grooves of thrust plate high low pressure window two ends design simultaneously and reduce noise and buffering technology.Its basic mechanical design feature index can reach: pressure 35Mpa-40Mpa, rotor 1500rpm-2500rpm, noise 81dB, total efficiency 86%, life-span is more than 6000 hours, dynamic response time (50-80) ms reaches the advanced level that is higher than external like product with part index number with external like product than technical performance index.The long working life of pump not only, and system works efficient is improved, so the application is more extensive, crane, bulldozer, heavy machinery, steel rolling and forging equipment and oil, chemical engineering industry etc. all are badly in need of this shaft orientation plunger variable pump.According to statistics, China will produce 2-3 ten thousand every year can save more than 800,000,000 yuan of foreign exchange, and occupying inter-national market gradually, and development prospect is wide.
The utility model compact structure, volume is little, pressure is high, noise is low and the life-span is long, high working efficiency, and the application is extensive.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the utility model pump general structure schematic representation;
Fig. 2 is a port plate structure schematic representation in the utility model;
Fig. 3 is the A-A sectional view among Fig. 2;
Fig. 4 is the B-B sectional view among Fig. 2;
Fig. 5 is a piston structure schematic representation in the utility model.
Embodiment
The utility model is by housing 5, swash plate 7, rotor 10, plunger 9, thrust plate 12 and pump cover 11 are formed the seal operation volume, swash plate 7 and transmission shaft 1 are made of one, be installed on the ball bearing 6 and cone bearing 15 in the housing 5, swash plate 7 has a tilt angle gamma with center plunger 14,7 plungers 9 are housed in the plunger hole of rotor 10, the bulb of plunger 9 cooperates with ball-and-socket on the swash plate 7, the bulb of plunger connects with swash plate 7 by backhaul dish 8, center plunger 14 is housed in the center hole of rotor 10, plunger 14 bottoms in center are equipped with and are given impacting force spring 13, spring 13 is pressed in the bulb of center plunger 14 and 7 plungers in the ball-and-socket on the swash plate, also an end sphere of rotor 10 tightly is pressed on the ball surface of thrust plate 12 simultaneously.Thrust plate 12 is installed on the pump cover 11, and pump cover 11 is connected with housing 5, is provided with stroking mechanism 16 in the pump cover 11, and the bi-side of pump cover 11 are provided with filler opening 17 and oil outlet 18; Have 0.6 * 0.5 static pressure groove 12.3 as shown in Figure 2 on thrust plate 12 surfaces, be provided with hole 12.5 as shown in Figure 3 on static pressure groove 12.3, hole 12.5 communicates with high pressure window 19 by adjustable damper 12.4.High pressure oil enters circular groove from the flow window by damper, the may command thrust plate is to the reaction thrust of rotor thus, to reach comparatively ideal impacting force coefficient, this carries out pressure and gap compensation to crucial fastness to rotor and thrust plate like this, and remaining has certain film lubrication between the fastness.Rotor and thrust plate are reduced wear and generate heat, improve the life-span of pump, and reach this pump high performance technology index request.
Work as rotor 10 in the course of the work like this, during outer load variations, rotor 10 and thrust plate 12 this to the reaction thrust of fastness with regard to may command, promptly outer load variations reaction thrust is respective change also, for this reason rotor 10 and thrust plate 12 this fastness is obtained pressure and gap compensation, remaining certain film lubrication, not only realize high pressure, big discharge capacity and the life-span of pump can be mentioned (external Related product 5000 hours) more than 6000 hours, and significantly reduce the heating of the noise and the pump of pump, and even reduce the temperature of work system.
As shown in Figure 5. on plunger 9, establish a φ 6 endoporus 9.4 and lead to the plunger ball center, make a call to a φ 1.6mm to the bulb end from the plunger ball center, length is fixing damper 9.1 for the 7mm aperture, pressure oil is by φ 6 endoporus 9.4 of plunger 9 like this, enter in the ball-and-socket on the swash plate 7 by damper 9.1 again, bulb to plunger 9 has formed certain reaction thrust, balance the impacting force of a big chunk plunger ball to ball-and-socket on the swash plate, be provided with circular groove 9.2 in the upper end portion, bulb center of plunger 9 (promptly with ball-and-socket surface of contact lower half portion), in groove, be arranged with the plunger aperture 9.3 of two φ 0.5, plunger aperture 9.3 communicates with fixing damper 9.1
Hydraulic oil is by plunger 9 endoporus and damper 9.1 holes, the plunger aperture 9.3 that passes through again enters in the circular groove 9.2, so not only increase the reaction thrust of plunger ball, and can make the area of contact of this pair of ball-and-socket fastness on whole plunger 9 and the swash plate 7 that oil lubrication is arranged all the time, reduced this to wearing and tearing in the fastness working procedure and heating, and the response time is fast, effectively improves the working life of pump.
When the utility model transmission shaft 1 and swash plate 7 rotations, drive rotor 10 rotations by plunger 9, when plunger 9 stretches out, the bottom that the low pressure window 20 of fluid by filler opening 17 and thrust plate 12 enters plunger 9 is the pump oil suction, when transmission shaft 1 and swash plate 7 continuation rotations, the fluid of plunger 9 bottoms by thrust plate 12 high pressure window 19 and pump cover 11 on oil drain out 18 discharge, oil extraction for pump, when rotor 10 rotates a circle, just form like this and inhale, oil extraction respectively once, promptly be this pump delivery g, the flow of this pump is Q=nq, and stroking mechanism 16 can be realized the adjusting of the flow size of pump by regulating the pivot angle of 10 pairs of swash plates of rotor.
The main fastness material of the utility model has:
1, the end face of rotor adopts naval's copper sintering technology high abrasion resisting material;
2, plane valving surface adopts plasma to annotate carburized tungsten material;
3, plunger ball adopts the 3Cr2W8V material;
4, transmission shaft and swash plate adopt 18Cr2Ni4W, and adopt plasma to annotate carburized tungsten material in ball-and-socket.
Claims (4)
1. bent shaft type sphere ported axial plunger variable displacement pump, by housing, swash plate, rotor, plunger, thrust plate and pump cover are formed the seal operation volume, swash plate and transmission shaft are made of one, be installed on the ball bearing and cone bearing in the housing, swash plate and newel are plugged with a tilt angle gamma, 7 plungers are housed in the plunger hole of rotor, the bulb of plunger cooperates with ball-and-socket on the swash plate, the bulb of plunger connects with swash plate by the backhaul dish, and the center plunger is housed in the centre of rotor hole, and the center plunger base is equipped with gives the impacting force spring, thrust plate is installed on the pump cover, pump cover is connected with housing, is provided with stroking mechanism in the pump cover, and the bi-side of pump cover are provided with filler opening and oil outlet; It is characterized in that: have static pressure groove (12.3) on thrust plate (12) surface, be provided with hole (12.5) on static pressure groove (12.3), hole (12.5) communicate with high pressure window (19) by adjustable damper (12.4).
2. bent shaft type sphere ported axial plunger variable displacement pump according to claim 1, it is characterized in that: high pressure window (19) on described thrust plate (12) and low pressure window (20) two ends have triangular groove (12.1), have aperture (12.2) in triangular groove (12.1) tip, aperture (12.2) communicates with high pressure window (19) and low pressure window (20) respectively.
3. bent shaft type sphere ported axial plunger variable displacement pump according to claim 1, it is characterized in that: described triangular groove (12.1) is ditrigon.
4. bent shaft type sphere ported axial plunger variable displacement pump according to claim 1, it is characterized in that: establish an endoporus (9.4) on the described plunger (9) and lead to the plunger ball center, make a call to an aperture from the plunger ball center to the bulb end and be fixing damper (9.1), upper end portion, bulb center at plunger (9) is provided with circular groove (9.2), be arranged with two plunger aperture (9.3) in groove, plunger aperture (9.3) communicates with fixing damper (9.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201126651U CN201196146Y (en) | 2008-04-18 | 2008-04-18 | Cambered axle type spherical surface valve axial plunger variable displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201126651U CN201196146Y (en) | 2008-04-18 | 2008-04-18 | Cambered axle type spherical surface valve axial plunger variable displacement pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201196146Y true CN201196146Y (en) | 2009-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201126651U Expired - Fee Related CN201196146Y (en) | 2008-04-18 | 2008-04-18 | Cambered axle type spherical surface valve axial plunger variable displacement pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201196146Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438336A (en) * | 2016-10-28 | 2017-02-22 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Plunger pair structure used for ultra-high-pressure axial plunger pump |
| CN107387350A (en) * | 2017-09-01 | 2017-11-24 | 杭州力龙液压有限公司 | Plunger assembly and inclined plunger motor for inclined plunger motor |
| CN107781157A (en) * | 2017-10-24 | 2018-03-09 | 徐州工业职业技术学院 | A kind of hydraulic pump plunger for reducing flow pulsation |
| CN110067720A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of bearing bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure |
| CN115306665A (en) * | 2022-07-29 | 2022-11-08 | 北京精密机电控制设备研究所 | Spherical floating flow distribution type high-rotation-speed servo motor pump |
| CN110067720B (en) * | 2018-05-22 | 2024-05-31 | 上海强田驱动技术有限公司 | Bearing support slide plate pair structure and swash plate type plunger pump or motor comprising same |
-
2008
- 2008-04-18 CN CNU2008201126651U patent/CN201196146Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438336A (en) * | 2016-10-28 | 2017-02-22 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Plunger pair structure used for ultra-high-pressure axial plunger pump |
| CN107387350A (en) * | 2017-09-01 | 2017-11-24 | 杭州力龙液压有限公司 | Plunger assembly and inclined plunger motor for inclined plunger motor |
| CN107781157A (en) * | 2017-10-24 | 2018-03-09 | 徐州工业职业技术学院 | A kind of hydraulic pump plunger for reducing flow pulsation |
| CN107781157B (en) * | 2017-10-24 | 2018-11-16 | 徐州工业职业技术学院 | A kind of hydraulic pump plunger reducing flow pulsation |
| CN110067720A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of bearing bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure |
| CN110067720B (en) * | 2018-05-22 | 2024-05-31 | 上海强田驱动技术有限公司 | Bearing support slide plate pair structure and swash plate type plunger pump or motor comprising same |
| CN115306665A (en) * | 2022-07-29 | 2022-11-08 | 北京精密机电控制设备研究所 | Spherical floating flow distribution type high-rotation-speed servo motor pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20130418 |