CN105156291A - Rotary multi-plunger hydraulic oil pump - Google Patents
Rotary multi-plunger hydraulic oil pump Download PDFInfo
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- CN105156291A CN105156291A CN201510528116.7A CN201510528116A CN105156291A CN 105156291 A CN105156291 A CN 105156291A CN 201510528116 A CN201510528116 A CN 201510528116A CN 105156291 A CN105156291 A CN 105156291A
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- plunger
- bearing
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- swash plate
- oil
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Abstract
The invention relates to the technical field of hydraulic engineering and provides a rotary multi-plunger hydraulic oil pump. The rotary multi-plunger hydraulic oil pump is mainly applied to hydraulic ascending and descending of a cab of a large forward control automobile in the maintenance process. A transmission shaft is driven to drive a swash plate through a flat key to conduct transmission, and the swash plate drives plungers to move in a reciprocating manner through matching action of a first thrust bearing and compression springs. The plungers are evenly distributed in the circumferential direction. The compression springs are arranged at the bottoms of plunger holes in a plunger base. The axial force borne by the plungers is transmitted to a front cover through a second thrust bearing, the swash plate and the first thrust bearing, so that a transmission shaft does not bear axial force, oil inlet and outlet one-way valves are opened or closed according to the preset settings, and oil is sucked and discharged so that the oil cylinder can ascend or descend. The working time is shortened, and working efficiency is doubled. If the working time is the same, the lead of the swash plate can be shortened, the pressure angle is reduced, the radial force on the swash plate of the plungers is lowered, and thus the labor intensity can be lowered in the operation process.
Description
Technical field
The present invention relates to oilhydraulic engineering technical field, particularly one is used for hydraulically powered rotary multi-plunger hydraulic-pressure pump, is mainly used in hydraulic pressure lift and the falling of large-scale flat fronted vehicle operator cabin in maintenance or servicing operations.
Technical background
At present, in the hydraulic pressure lift of large-scale cab over type automobile operator cabin in maintenance process simulation process and falling system, lever reciprocating formula single plunger hydraulic-pressure pump is all adopted to be that power source is to drive hydraulic jack work (see accompanying drawing 1), in lifting process, press down handle B5 drive swing arm B2 to carry out actuating cam to press down spring force that piston B3 overcomes hydraulic coupling and Compress Spring B4 and complete force feed action and make oil cylinder increase, backhaul carries out oil suction action under the spring-back force effect of spring B 4, and oil pump completes a work cycle.In working procedure there are following three large shortcomings in this pump: 1, lifting process effort, and arm downforce is up to 44 kilograms, and labor intensity is large; 2, there is idle stroke in single reciprocating motion of the pistons, and working efficiency only has 50%, needs the to-and-fro motion of more than 100 time just can complete and once promote generally about 100-120 seconds consuming time.3, because this pump exists idle stroke so operator cabin in lifting or fall the motion of process discontinuous after rise, makes operator cabin produce vibrations.
Summary of the invention
The object of the invention is to be to overcome above-mentioned technical deficiency, provide a kind of for hydraulically powered rotary multi-plunger hydraulic-pressure pump.
The technological scheme of technical solution problem of the present invention is: adopt rotary multi-plunger hydraulic-pressure pump.This pump relies on swash plate centering rotation to realize multi-plunger substep reciprocal axial motion, and the switch through one-way valve realizes the input and output of hydraulic oil continuous print, drives operating cylinder to complete lifting and the falling of operator cabin.Detailed technology scheme is as follows: comprise protecgulum, DU bearing, thrust-bearing, flat key, swash plate, plunger, Compress Spring, in line check valve, oil outlet one-way valve, bonnet, limiting locking bolt, oil inlet and outlet, selector valve, thrust plate, plunger mat, pump case, DU bearing, thrust-bearing, transmission shaft, nut, bolt, oil filler, basic structure as shown in Figure 4: in line check valve, oil outlet one-way valve are placed in the hydraulic fluid port of thrust plate; The hole that thrust plate, plunger mat are connected with bonnet by limiting locking bolt, DU bearing is placed in plunger mat; The built-in thrust-bearing of protecgulum, DU bearing; Drive shaft cartridge is in the hole of DU bearing and DU bearing, and swash plate is fixed on transmission shaft by flat key, thrust-bearing is arranged on swash plate; 8 plungers uniform in plunger mat are pressed in thrust-bearing left end under corresponding Compress Spring active force, and thrust-bearing contacts with thrust bearing left end with swash plate; Selector valve is placed in the valve opening of bonnet, with screw bolt and nut, each assembly is fastenedly connected, it is characterized in that: drive transmission shaft to drive swash plate to rotate by flat key, swash plate is by making multi-plunger to-and-fro motion under thrust-bearing and Compress Spring mating reaction, adopt multi-plunger circumference uniform distribution, Compress Spring is placed in the piston bore bottom of plunger mat, axial force suffered by plunger by swash plate, thrust bearing pass to protecgulum then transmission shaft not by axial force, enter oil outlet one-way valve to open or close (predetermined lifting) by predetermined concrete setting, realize suction oil and make oil cylinder lifting or decline.Rotary multi-plunger hydraulic-pressure pump circular-rotation, can adopt manual rocking handle manual drive, mechanical pneumatic or electric wrench to drive.Selector valve along inverse bidirectional rotation, can realize oil cylinder lifting or decline.
Advantage of the present invention is:
(1) the rotary multi-plunger hydraulic-pressure pump of the design adopts a fixed-axis rotation swash plate to promote 9 plunger continuous axial to-and-fro motion in order, the manner of execution that lever reciprocating formula single plunger pump swings up and down is transformed to the working method of circular-rotation, not only achieve crank manually-operable and also can utilize pneumatic (electronic) wrench operated simultaneously, make operation hommization more.
(2) because rotary multi-plunger hydraulic-pressure pump contrast lever reciprocating formula single plunger pump can realize continuous oil supply, thus under the prerequisite of equal discharge capacity, accelerate oil cylinder rising or falling speed, shorten the operating time, working efficiency is doubled.If the operating time, the identical swash plate helical pitch that makes shortened reduction pressure angle, reduce plunger to the radial force of swash plate, and then the labor intensity of operating process can be reduced.
(3) lever reciprocating formula single plunger pump is in cab lift and falling process, and by lifting pressure lever, hydraulic oil interval is discharged, impact endurance test shock when causing cab lift or fall after rise.And rotary multi-plunger hydraulic-pressure pump is because of the continuity of multi-plunger work oil transportation, operator cabin continuous and stable friction in lifting or falling process can be made.
(4) under discharge capacity same case, owing to adopting multi-plunger geometries shrink axial dimension, multi-plunger reduces radial dimension around running shaft circumference uniform distribution, and rotary multi-plunger hydraulic-pressure pump volume is little, lightweight and easy for installation.
The invention of the present invention's rotary multi-plunger hydraulic-pressure pump fundamentally solves the shortcoming that labor intensity is large, the operating time is long, efficiency is low and lifting decline interval is impacted of existing product existence.
Accompanying drawing explanation
Fig. 1 is existing Lever type single plunger pump schematic diagram.
In figure: A1-handle assembly, A2-plunger pump assembly, A3-oil outlet one-way valve, A4-in line check valve, A5-selector valve, A6-operating cylinder.
Fig. 2 is existing Lever type single plunger pump structural representation.
In figure: B1-cam, B2-swing arm, B3-plunger, B4-Compress Spring, B5-handle.
Fig. 3 is hydraulic system principle figure of the present invention.
In figure: C1-live axle, C2-plunger pump assembly, C3-in line check valve, C4-oil outlet one-way valve, C5-selector valve, C6-operating cylinder.
Fig. 4 is structural representation of the present invention.
Fig. 5 is the A direction view (this pump can bidirectional rotation) of Fig. 4.
Fig. 6 is oil filler, go out, return opening schematic diagram.
Fig. 7 is the mounting point schematic diagram of Compress Spring 7.
In figure: 1-protecgulum, 2-DU bearing, 3-thrust-bearing, 4-flat key, 5-swash plate, 6-plunger, 7-Compress Spring, 8-in line check valve, 9-oil outlet one-way valve, 10-bonnet, 11-limiting locking bolt, 12-oil inlet and outlet, 13-selector valve, 14-thrust plate, 15-plunger mat, 16-pump case, 17-DU bearing, 18-thrust-bearing, 19-transmission shaft, 20-nut, 21-bolt, 22-oil filler.
Embodiment
Basic structure of the present invention: in line check valve 8, oil outlet one-way valve 9 are placed in the hydraulic fluid port of thrust plate 14; The hole that thrust plate 14, plunger mat 15 are connected with bonnet 10 by limiting locking bolt 11, DU bearing 17 is placed in plunger mat 15; The built-in thrust-bearing 3 of protecgulum, DU bearing 2; Transmission shaft 19 is loaded in the hole of DU bearing 2 and DU bearing 17, and swash plate 5 is fixed on transmission shaft 19 by flat key 4, thrust-bearing 18 is arranged on swash plate 5; 9 plunger 6(or n plungers uniform in plunger mat, are arranged as required) under corresponding Compress Spring 7 active force, be pressed in thrust-bearing 18 left end, thrust-bearing 18 contacts with thrust bearing 3 left end with swash plate 5; Selector valve 13 is placed in the valve opening of bonnet 10, is fastenedly connected by each assembly with bolt 21 and nut 20.
Working principle of the present invention
Lifting process: rotate selector valve 13 and the rodless cavity of oil outlet one-way valve 9 oil duct and operating cylinder B6 is connected, cylinder rod chamber communicates with return opening.Transmission shaft 19 is driven to drive swash plate 5 to rotate, the flowed friction of the spring force and fluid that overcome Compress Spring 7 due to plunger 6 in the effect lift process of swash plate 5 helical pitch under the pressure effect of swash plate 5 is moved to the left a helical pitch, under oil liquid pressure effect, filler opening one-way valve 8 is closed, and oil outlet one-way valve 9 is opened and made fluid export oil cylinder rodless cavity to.Plunger 6 simultaneously in return stroke moves to right under the effect of Compress Spring 7, and make the corresponding plunger bottom outlet on valve seat 15 produce negative pressure in line check valve 8 and open, under induced pressure effect, oil outlet one-way valve 9 is closed and achieved oil-absorbing process.Swash plate 5 rotate a circle 12 plungers 6 respectively to-and-fro motion once complete a suction oil process.Swash plate 5 rotates continuously and achieves lifting process.Move selector valve 13 when oil cylinder declines and change oil circuit direction, oil outlet one-way valve 9 and oil cylinder B6 rod chamber are connected, and oil cylinder rodless cavity communicates with return opening.Driving transmission shaft 19(working principle is the same) realize oil cylinder decline.
Claims (3)
1. a rotary multi-plunger hydraulic-pressure pump, comprises protecgulum (1), DU bearing (2), thrust-bearing (3), flat key (4), swash plate (5), plunger (6), Compress Spring (7), in line check valve (8), oil outlet one-way valve (9), bonnet (10), limiting locking bolt (11), oil inlet and outlet (12), selector valve (13), thrust plate (14), plunger mat (15), pump case (16), DU bearing (17), thrust-bearing (18), transmission shaft (19), nut (20), bolt (21), oil filler (22), in line check valve (8), oil outlet one-way valve (9) are placed in the hydraulic fluid port of thrust plate (14), the hole that thrust plate (14), plunger mat (15) are connected with bonnet (10) by limiting locking bolt (11), DU bearing (17) is placed in plunger mat (15), the built-in thrust-bearing of protecgulum (3), DU bearing (2), transmission shaft (19) is loaded in the hole of DU bearing (2) and DU bearing (17), and swash plate (5) is fixed on transmission shaft (19) by flat key (4), thrust-bearing (18) is arranged on swash plate (5), plunger (6) uniform in plunger mat is pressed in thrust-bearing (18) left end under corresponding Compress Spring (7) active force, and thrust-bearing (18) contacts with thrust bearing (3) left end with swash plate (5), selector valve (13) is placed in the valve opening of bonnet (10), with bolt (21) and nut (20), each assembly is fastenedly connected, it is characterized in that: drive transmission shaft (19) to drive swash plate (5) to rotate by flat key (4), swash plate (5) is by thrust-bearing (18) and Compress Spring (7) mating reaction plunger (6) to-and-fro motion, adopt multiple plunger circumference uniform distribution, Compress Spring (7) is placed in the piston bore bottom of plunger mat (15), the suffered axial force of plunger (6) is by thrust-bearing (18), swash plate (5) and thrust-bearing (3) pass to protecgulum (1) then transmission shaft not by axial force, enter oil outlet one-way valve I (8), enter oil outlet one-way valve II (9) to open or close by predetermined set, realize suction oil and make oil cylinder lifting or decline.
2. rotary multi-plunger hydraulic-pressure pump according to claim 1, is characterized in that: rotary multi-plunger hydraulic-pressure pump circular-rotation, and manual rocking handle manual drive, mechanical pneumatic or electric wrench can be adopted to drive.
3. rotary multi-plunger hydraulic-pressure pump according to claim 1, is characterized in that: selector valve (13) along inverse bidirectional rotation, can realize oil cylinder lifting or decline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510528116.7A CN105156291A (en) | 2015-11-03 | 2015-11-03 | Rotary multi-plunger hydraulic oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510528116.7A CN105156291A (en) | 2015-11-03 | 2015-11-03 | Rotary multi-plunger hydraulic oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105156291A true CN105156291A (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510528116.7A Pending CN105156291A (en) | 2015-11-03 | 2015-11-03 | Rotary multi-plunger hydraulic oil pump |
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| CN (1) | CN105156291A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500270A (en) * | 2019-08-23 | 2019-11-26 | 重庆微液科技有限公司 | A kind of bidirectional high speed Small Plunger Pump inserting hydraulic fluid port |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2342127Y (en) * | 1998-05-06 | 1999-10-06 | 王松凯 | Axial valve type oil pump |
| EP1074734A2 (en) * | 1999-08-04 | 2001-02-07 | Pierburg Aktiengesellschaft | Axial piston pump |
| CN1982140A (en) * | 2005-12-15 | 2007-06-20 | 宜昌迅达车用技术有限责任公司 | Electric and manual return oil pump for driver's cab |
| CN201696244U (en) * | 2010-05-28 | 2011-01-05 | 常州协力汽车零部件有限公司 | Lifting oil pump used in driving cabs |
| CN203067262U (en) * | 2012-12-31 | 2013-07-17 | 上海亿力电器有限公司 | Swash plate type plunger pump transmission system |
| CN203864823U (en) * | 2014-05-06 | 2014-10-08 | 浙江科力车辆控制系统有限公司 | Cab hydraulic turnover device having double functions |
| CN104373314A (en) * | 2014-11-13 | 2015-02-25 | 常州市华贤五金厂 | Axial piston pump |
| CN104405606A (en) * | 2014-10-20 | 2015-03-11 | 浙江大学 | Axial plunger pump |
| CN104960584A (en) * | 2015-07-10 | 2015-10-07 | 实用动力(中国)工业有限公司 | Integrated hydraulic cab tilting power unit for heavy-load truck |
| CN205101185U (en) * | 2015-11-03 | 2016-03-23 | 阜新北鑫星液压有限公司 | Rotation type multicolumn stopper hydraulic oil pump |
-
2015
- 2015-11-03 CN CN201510528116.7A patent/CN105156291A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2342127Y (en) * | 1998-05-06 | 1999-10-06 | 王松凯 | Axial valve type oil pump |
| EP1074734A2 (en) * | 1999-08-04 | 2001-02-07 | Pierburg Aktiengesellschaft | Axial piston pump |
| CN1982140A (en) * | 2005-12-15 | 2007-06-20 | 宜昌迅达车用技术有限责任公司 | Electric and manual return oil pump for driver's cab |
| CN201696244U (en) * | 2010-05-28 | 2011-01-05 | 常州协力汽车零部件有限公司 | Lifting oil pump used in driving cabs |
| CN203067262U (en) * | 2012-12-31 | 2013-07-17 | 上海亿力电器有限公司 | Swash plate type plunger pump transmission system |
| CN203864823U (en) * | 2014-05-06 | 2014-10-08 | 浙江科力车辆控制系统有限公司 | Cab hydraulic turnover device having double functions |
| CN104405606A (en) * | 2014-10-20 | 2015-03-11 | 浙江大学 | Axial plunger pump |
| CN104373314A (en) * | 2014-11-13 | 2015-02-25 | 常州市华贤五金厂 | Axial piston pump |
| CN104960584A (en) * | 2015-07-10 | 2015-10-07 | 实用动力(中国)工业有限公司 | Integrated hydraulic cab tilting power unit for heavy-load truck |
| CN205101185U (en) * | 2015-11-03 | 2016-03-23 | 阜新北鑫星液压有限公司 | Rotation type multicolumn stopper hydraulic oil pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500270A (en) * | 2019-08-23 | 2019-11-26 | 重庆微液科技有限公司 | A kind of bidirectional high speed Small Plunger Pump inserting hydraulic fluid port |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |