CN104533782A - Variable plunger hydraulic pump body - Google Patents
Variable plunger hydraulic pump body Download PDFInfo
- Publication number
- CN104533782A CN104533782A CN201410849243.2A CN201410849243A CN104533782A CN 104533782 A CN104533782 A CN 104533782A CN 201410849243 A CN201410849243 A CN 201410849243A CN 104533782 A CN104533782 A CN 104533782A
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- pump body
- pump housing
- groove
- bearing
- servovalve
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Abstract
The invention relates to a variable plunger hydraulic pump body. The variable plunger hydraulic pump body comprises a main pump body, a servo valve installation screw hole and a valve body installation screw hole are formed in the main pump body, a left control oil way and a right control oil way are formed in the upper portion of the main pump body, a servo valve oil return channel is formed between the left control oil way and the right control oil way, a first-stage oil inlet channel, a second-stage oil inlet channel and a third-stage oil inlet channel which are sequentially communicated are formed in the main pump body, the third-stage oil inlet channel is communicated with the left control oil way and the right control oil way, the left control oil way and the right control oil way are each communicated with the servo valve oil return channel, dual-direction oil entering can be achieved, and the work efficiency is better improved. A servo valve feedback installation hole is further formed in the main pump body, and a feedback rod on a servo valve extends into the main pump body from the servo valve feedback installation hole and is matched with an installation groove in a variable cylinder to accordingly achieve fixed-point control. A variable cylinder containing cavity is formed in the main pump body, a left suspension supporting groove and a right suspension supporting groove are formed in the two sides of the variable cylinder containing cavity, the integration degree of the main pump body is high, and convenience is brought to integrated application.
Description
Technical field
The present invention relates to oil hydraulic pump technical field, particularly relate to a kind of variable piston hydraulic pump body.
Background technique
Oil hydraulic pump is the dynamical element of hydraulic system, its effect converts mechanical energy to hydraulic energy, compared with other pumps, has that working efficiency is high, pressure is high, long service life, Flow-rate adjustment are convenient, the feature that weight per unit power is little, is therefore used widely in technical field of mechanical equipment.But in the variable piston hydraulic pump body used at present, pump housing volume is large, and level of integration is low, the needs of Modern hydraulic integrated system can not be met, can not effectively be combined with the servo variable displacement in modern times, and unidirectional oil-feed and fuel-displaced, not only inefficiency, can't meet the need of work of system.
Summary of the invention
Technical problem solved by the invention is to provide a kind of variable piston hydraulic pump body, to solve the shortcoming in above-mentioned background technology.
Technical problem solved by the invention realizes by the following technical solutions:
Variable piston hydraulic pump body, comprise the pump housing, wherein, the pump housing is provided with the servovalve mounting screw holes for installing servovalve and the valve body mounting screw holes for installing large valve body, and control oil duct and right side control oil duct on the left of being provided with on pump housing top, servovalve drainback passage is arranged on left side control oil duct and right side controls between oil duct, and in the pump housing, be provided with one-level oil inlet passage, two-stage oil feeding passage and three grades of oil inlet passages, and one-level oil inlet passage, two-stage oil feeding passage and three grades of oil inlet passages are communicated with successively, three grades of oil inlet passages and left side control oil duct, right side controls oil duct and is communicated with, left side controls oil duct, right side controls oil duct and is communicated with servovalve drainback passage respectively, the pump housing is also provided with the servovalve feedback mounting hole for installing servovalve feedback rod, feedback rod on servovalve feeds back mounting hole by servovalve and stretches in the pump housing, and coordinate with the mounting groove in variable cylinder, the operation of variable cylinder is fed back to servovalve, thus plays the effect of position control, the variable cylinder body cavity volume for holding variable cylinder body is also provided with in the pump housing, and variable cylinder body cavity volume both sides are provided with for supporting the left side suspension support groove and right side suspension support groove that hold up whole variable cylinder body, on the pump housing, be provided with the bottom bearing mounting groove for installing crescent moon bearing and top bearing mounting groove simultaneously, and above the bearing mounting groove of top, be provided with bearing installation endoporus, bearing is installed in endoporus and is provided with roller bearing, end ring groove is arranged on bearing and installs above endoporus, roller bearing is by being arranged on the retainer ring spacing in end ring groove, shaft seal is installed endoporus and is arranged on above end ring groove, in it, outside framework oil seal is installed, and by being arranged on the retainer ring spacing in shaft seal circlip groove.
In the present invention, the pump housing is provided with positioning pin hole, and servovalve is installed on the pump housing, is located by the locating stud inserted in positioning pin hole.
In the present invention, in left side suspension support groove and right side suspension support groove, wear ring being installed, holding up whole variable cylinder body for supporting.
In the present invention, variable cylinder body cavity volume is provided with left side seal groove and right side seal groove, and is separately installed with this spy in left side seal groove and right side seal groove and seals, for the sealing to variable cylinder body cavity volume.
In the present invention, the left side end cap that seal groove periphery in left side is provided with for installing end cover coordinates endoporus, and end cover is fastening by head bolts hole.
In the present invention, the right side end cap that seal groove periphery in right side is provided with for installing end cover coordinates endoporus, and end cover is fastening by head bolts hole.
In the present invention, bearing mounting groove in top is provided with for carrying out spacing top bearing positioning pin hole to crescent moon bearing.
In the present invention, bottom bearing mounting groove is provided with for carrying out spacing bottom bearing positioning pin hole to crescent moon bearing.
In the present invention, pump housing top is provided with the riveted holes for riveting pump nameplate.
In the present invention, the pump housing is also provided with the pump housing and location cylindrical and pump housing installation gap are installed, by the pump housing, location cylindrical is installed and coordinates location, and by the fastening installation of pump housing installation gap.
In the present invention, hydraulic control oil in valve body is successively through one-level oil inlet passage, two-stage oil feeding passage and three grades of oil inlet passages are delivered to servovalve, and control by left side control oil duct or right side the two ends that hydraulic control oil is delivered to oil hydraulic cylinder by oil duct respectively after servovalve transition, the side-to-side movement of controlled variable cylinder, when hydraulic oil controls oil duct oil-feed through left side, during controlled variable cylinder right lateral, hydraulic oil on the right side of variable cylinder controls oil duct and is back to servovalve through right side, and flow out off-load through servovalve drainback passage, the hydraulic oil simultaneously flowed out covers on relative motion parts, play the effect of lubrication, when hydraulic oil controls oil duct oil-feed through right side, during controlled variable cylinder left lateral, the hydraulic oil on the left of variable cylinder controls oil duct and is back to servovalve through left side, and flows out off-load through servovalve drainback passage, the hydraulic oil simultaneously flowed out covers on relative motion parts, plays the effect of lubrication.
Beneficial effect: the hydraulic control oil in the present invention in valve body is delivered to servovalve through one-level oil inlet passage, two-stage oil feeding passage and three grades of oil inlet passages successively, the two ends that hydraulic control oil is delivered to oil hydraulic cylinder by oil duct are respectively controlled by left side control oil duct or right side, control to realize servo variable displacement, simultaneously left side control oil duct or right side control oil duct can two-way oil-feed, be conducive to increasing work efficiency, and pump housing level of integration, be convenient to the application of integrated system.
Accompanying drawing explanation
Fig. 1 is the plan view of preferred embodiment of the present invention.
Fig. 2 is the plan view of preferred embodiment of the present invention.
Fig. 3 is A-A place sectional view in Fig. 2.
Fig. 4 is C-C place sectional view in Fig. 2.
Fig. 5 is the right elevation of preferred embodiment of the present invention.
Fig. 6 is B-B place sectional view in Fig. 2.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
See the variable piston hydraulic pump body of Fig. 1 ~ Fig. 6, comprise spiro pluging hole 1, left side controls oil duct 2, servovalve mounting screw holes 3, servovalve drainback passage 4, servovalve feedback mounting hole 5, right side controls oil duct 6, two-stage oil feeding passage 7, one-level oil inlet passage 8, pump housing installation gap 9, bottom bearing positioning pin hole 10, valve body mounting screw holes 11, bottom bearing mounting groove 12, top bearing mounting groove 13, top bearing positioning pin hole 14, head bolts hole 15, location cylindrical 16 installed by the pump housing, left side suspension support groove 17, left side seal groove 18, variable cylinder body cavity volume 19, right side seal groove 20, right side suspension support groove 21, right side end cap coordinates endoporus 22, shaft seal circlip groove 23, endoporus 24 installed by bearing, shaft seal installs endoporus 25, end ring groove 26, riveted holes 27, positioning pin hole 28, three grades of oil inlet passages 29 and left side end cap coordinate endoporus 30.
In the present embodiment, spiro pluging hole 1 is auxiliary hole, plug for seal after getting through for oil duct, servovalve is installed on the pump housing, located by the locating stud inserted in positioning pin hole 28, and by the fastening installation of servovalve mounting screw holes 3, large valve body is installed on the pump housing by valve body mounting screw holes 11 is fastening, hydraulic control oil in valve body is successively through one-level oil inlet passage 8, two-stage oil feeding passage 7 and three grades of oil inlet passages 29 are delivered to servovalve, and control by left side control oil duct 2 or right side the two ends that hydraulic control oil is delivered to oil hydraulic cylinder by oil duct 6 respectively after servovalve transition, the side-to-side movement of controlled variable cylinder, when hydraulic oil controls oil duct 2 oil-feed through left side, during controlled variable cylinder right lateral, hydraulic oil on the right side of variable cylinder controls oil duct 6 and is back to servovalve through right side, and flow out off-load through servovalve drainback passage 4, the hydraulic oil simultaneously flowed out covers on relative motion parts, play the effect of lubrication, feedback rod on servovalve feeds back mounting hole 5 by servovalve and stretches in the pump housing, and coordinate with the mounting groove in variable cylinder, the operation of variable cylinder is fed back to servovalve, thus play the effect of position control,
Left side suspension support groove 17 and right side suspension support groove 21 are built with wear ring, whole variable cylinder body is held up for supporting, this special envelope is installed in left side seal groove 18 and right side seal groove 20, for the sealing to variable cylinder pressure chamber, right side end cap cooperation endoporus 22 and left side end cap cooperation endoporus 30 are respectively used to cooperation when installing end cover, and end cover is fastening by head bolts hole 15; Bottom bearing mounting groove 12 and top bearing mounting groove 13 are respectively used to install crescent moon bearing, and on the bottom bearing positioning pin hole 10 of design on bottom bearing mounting groove 12 and top bearing mounting groove 13, the top bearing positioning pin hole 14 of design carries out spacing to the crescent moon bearing installed respectively; Bearing is installed in endoporus 24 and is provided with roller bearing, and the retainer ring spacing by installing in end ring groove 26, shaft seal is installed in endoporus 25 and is provided with outside framework oil seal, and the retainer ring spacing by installing in shaft seal circlip groove 23; The riveted holes 27 of pump housing top design is for riveting the nameplate of pump, and cylindrical 16 cooperation location, location installed by the pump housing that is fitted through of the pump housing, and by the fastening installation of pump housing installation gap 9.
More than show and describe basic principle of the present invention and 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 above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (10)
1. variable piston hydraulic pump body, comprise the pump housing, it is characterized in that, the pump housing is provided with the servovalve mounting screw holes for installing servovalve and the valve body mounting screw holes for installing large valve body, and control oil duct and right side control oil duct on the left of being provided with on pump housing top, servovalve drainback passage is arranged on left side control oil duct and right side controls between oil duct, and in the pump housing, be provided with one-level oil inlet passage, two-stage oil feeding passage and three grades of oil inlet passages, and one-level oil inlet passage, two-stage oil feeding passage and three grades of oil inlet passages are communicated with successively, three grades of oil inlet passages and left side control oil duct, right side controls oil duct and is communicated with, left side controls oil duct, right side controls oil duct and is communicated with servovalve drainback passage respectively, the pump housing is also provided with the servovalve feedback mounting hole for installing servovalve feedback rod, the feedback rod on servovalve feeds back mounting hole by servovalve and stretches in the pump housing, and coordinates with the mounting groove in variable cylinder, the variable cylinder body cavity volume for holding variable cylinder body is also provided with in the pump housing, and variable cylinder body cavity volume both sides are provided with for supporting the left side suspension support groove and right side suspension support groove that hold up whole variable cylinder body, on the pump housing, be provided with the bottom bearing mounting groove for installing crescent moon bearing and top bearing mounting groove simultaneously, and above the bearing mounting groove of top, be provided with bearing installation endoporus, bearing is installed in endoporus and is provided with roller bearing, end ring groove is arranged on bearing and installs above endoporus, shaft seal is installed endoporus and is arranged on above end ring groove, in it, outside framework oil seal is installed.
2. variable piston hydraulic pump body according to claim 1, is characterized in that, the pump housing is provided with positioning pin hole.
3. variable piston hydraulic pump body according to claim 1, is characterized in that, is provided with wear ring in left side suspension support groove and right side suspension support groove.
4. variable piston hydraulic pump body according to claim 1, is characterized in that, variable cylinder body cavity volume is provided with left side seal groove and right side seal groove, and is separately installed with this spy in left side seal groove and right side seal groove and seals.
5. variable piston hydraulic pump body according to claim 4, is characterized in that, the left side end cap that seal groove periphery in left side is provided with for installing end cover coordinates endoporus.
6. variable piston hydraulic pump body according to claim 4, is characterized in that, the right side end cap that seal groove periphery in right side is provided with for installing end cover coordinates endoporus.
7. variable piston hydraulic pump body according to claim 1, is characterized in that, top bearing mounting groove is provided with for carrying out spacing top bearing positioning pin hole to crescent moon bearing.
8. variable piston hydraulic pump body according to claim 1, is characterized in that, bottom bearing mounting groove is provided with for carrying out spacing bottom bearing positioning pin hole to crescent moon bearing.
9. variable piston hydraulic pump body according to claim 1, is characterized in that, pump housing top is provided with the riveted holes for riveting pump nameplate.
10. variable piston hydraulic pump body according to claim 1, is characterized in that, the pump housing is also provided with the pump housing and installs location cylindrical and pump housing installation gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410849243.2A CN104533782B (en) | 2014-12-30 | 2014-12-30 | Variable plunger hydraulic pump body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410849243.2A CN104533782B (en) | 2014-12-30 | 2014-12-30 | Variable plunger hydraulic pump body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104533782A true CN104533782A (en) | 2015-04-22 |
| CN104533782B CN104533782B (en) | 2017-01-11 |
Family
ID=52849371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410849243.2A Active CN104533782B (en) | 2014-12-30 | 2014-12-30 | Variable plunger hydraulic pump body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104533782B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286276A (en) * | 2016-08-26 | 2017-01-04 | 宁波市鄞州唯达汽车配件厂（普通合伙） | The aluminum casting pump housing |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090304531A1 (en) * | 2008-06-05 | 2009-12-10 | Dana Canada Corporation | Integrated coolant pumping module |
| CN202040036U (en) * | 2011-04-26 | 2011-11-16 | 济南镇海机械厂 | Power-adjustable variable piston pump |
| CN102352839A (en) * | 2011-07-08 | 2012-02-15 | 哈尔滨飞机工业集团有限责任公司 | Integrated hydraulic packet |
| US20140017110A1 (en) * | 2011-03-24 | 2014-01-16 | Rotorcomp Verdichter Gmbh | Screw compressor system |
| CN104214090A (en) * | 2014-08-08 | 2014-12-17 | 宁波雪隆王液压科技有限公司 | An integral structure of a gear pump and a jet flow valve |
| CN204371655U (en) * | 2014-12-30 | 2015-06-03 | 南京萨伯工业设计研究院有限公司 | Variable piston hydraulic pump body |
-
2014
- 2014-12-30 CN CN201410849243.2A patent/CN104533782B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090304531A1 (en) * | 2008-06-05 | 2009-12-10 | Dana Canada Corporation | Integrated coolant pumping module |
| US20140017110A1 (en) * | 2011-03-24 | 2014-01-16 | Rotorcomp Verdichter Gmbh | Screw compressor system |
| CN202040036U (en) * | 2011-04-26 | 2011-11-16 | 济南镇海机械厂 | Power-adjustable variable piston pump |
| CN102352839A (en) * | 2011-07-08 | 2012-02-15 | 哈尔滨飞机工业集团有限责任公司 | Integrated hydraulic packet |
| CN104214090A (en) * | 2014-08-08 | 2014-12-17 | 宁波雪隆王液压科技有限公司 | An integral structure of a gear pump and a jet flow valve |
| CN204371655U (en) * | 2014-12-30 | 2015-06-03 | 南京萨伯工业设计研究院有限公司 | Variable piston hydraulic pump body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286276A (en) * | 2016-08-26 | 2017-01-04 | 宁波市鄞州唯达汽车配件厂（普通合伙） | The aluminum casting pump housing |
| CN106286276B (en) * | 2016-08-26 | 2018-05-08 | 宁波华源精特金属制品有限公司 | Aluminium casts the pump housing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104533782B (en) | 2017-01-11 |
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