CN2421426Y - Double-oil-way double-flow band hydraulic pump - Google Patents
Double-oil-way double-flow band hydraulic pump Download PDFInfo
- Publication number
- CN2421426Y CN2421426Y CN 00231675 CN00231675U CN2421426Y CN 2421426 Y CN2421426 Y CN 2421426Y CN 00231675 CN00231675 CN 00231675 CN 00231675 U CN00231675 U CN 00231675U CN 2421426 Y CN2421426 Y CN 2421426Y
- Authority
- CN
- China
- Prior art keywords
- pump
- valve
- pump core
- double
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a double-oil-way double-flow hand hydraulic pump used by matching a hydraulic oil cylinder, which is mainly composed of an oil tank, a valve body, a pump body, a handle, etc., wherein a big pump core is arranged in the pump body; a small pump core is arranged in the valve body; the big pump core is connected with the small pump core by a steel wire retainer ring through a hole; the handle is movably connected with the big pump core by a press handle; an adjusting valve, a safety valve and four unidirectional valves are arranged on the valve body. The utility model has the advantages of small size, light weight and convenient operation. The utility model can realize the rise and fall and the direction change of the hydraulic oil cylinder when used by matching the hydraulic oil cylinder in double-way operation without an additional changeover valve, and the flow quantity can be changed with the load fluctuation of the hydraulic oil cylinder so as to enlarge the application field of the hand hydraulic pump and conspicuously improve work efficiency.
Description
The utility model relates to a kind of and the matching used oil hydraulic pump of hydraulic jack, specifically is meant a kind of pair of oil circuit double fluid amount hydraulic hand-pump.
Hydraulic hand-pump is a kind of simple hydraulic power supply, forms simple lifting gear with hydraulic jack is supporting, is widely used in building, machinery, electric power and automobile maintenance industry.In the prior art, hydraulic hand-pump is single oil circuit, firm discharge, can only with the supporting use of the hydraulic jack of one-way only operation, and can only under a kind of flow status, work.That is to say, existing hydraulic hand-pump can not with the supporting use of the hydraulic jack of two-way working, and when hydraulic jack zero load or load were very little, hydraulic jack also can't be worked fast.
The purpose of this utility model is at the deficiencies in the prior art, a kind of pair of oil circuit double fluid amount hydraulic hand-pump is provided, it is rational in infrastructure, easy to use, can with the supporting use of the hydraulic jack of one-way only operation, again can with the supporting use of the hydraulic jack of two-way working, and when hydraulic jack zero load or load are very little, can work fast again.
The purpose of this utility model is achieved through the following technical solutions: this pair of oil circuit double fluid amount hydraulic hand-pump mainly is made up of fuel tank, valve body, the pump housing, handle etc., the pump housing is connected with valve body, be equiped with large pump core in the pump housing, be equiped with small pump core in the valve body, connect with the steel wire ring washer by the hole between large pump core and the small pump core, handle flexibly connects by pressing hand and large pump core; Be equiped with modulating valve and safety valve on the valve body, and be provided with four one- way valves 9,10,11,12, each one-way valve links to each other with the transport pipe of hydraulic jack respectively, and wherein one- way valve 9,10 and one-way valve 11,12 constitute two groups of fuel feeding and return line respectively.
In the technical solution of the utility model, owing to designed two groups of one-way valves and replace selector valve, so its fuel feeding process and oil return process can be undertaken by two pipeline roads, promptly realizes the function of hydraulic jack lifting commutation by two oil circuit designs; Simultaneously, large pump core flexibly connects with the steel wire ring washer by the hole with small pump core and is in the same place in the utility model, in two chambers that do not communicate, work respectively, when hydraulic jack zero load or load less (less than setting load), large and small pump core co-operation on the oil hydraulic pump, the flow of oil hydraulic pump is increased, hydraulic jack is worked fast; When the work loads of hydraulic jack met or exceeded setting load, the working oil that large pump core is discharged in the pump housing cavity leaked into fuel tank by modulating valve, had only small pump core work this moment, and the flow of oil hydraulic pump reduces, and hydraulic jack enters normal working automatically.
The utility model has the advantages that:
1, oil hydraulic pump has adopted two oil circuit designs, when with the supporting use of the hydraulic jack of two-way working, does not need to dispose the lifting commutation that selector valve can be realized hydraulic jack in addition, has enlarged the application of hydraulic hand-pump;
2, the fluid flow can change with the load change of hydraulic jack, and working efficiency is significantly improved;
3, volume is little, and is in light weight, easy to use.
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the structural representation of valve body among Fig. 1.
Among the embodiment of the present utility model that accompanying drawing provided, be equiped with large pump core 1 in the pump housing 2 of hydraulic hand-pump, be equiped with small pump core 4 in the valve body 5, the lower end of large pump core and the upper end of small pump core flexibly connect together with steel wire ring washer 3 by the hole, handle 7 flexibly connects by the upper end of pressing hand 8 and large pump core, and handle 7 can drive the upper and lower motion of large and small pump core.Figure 2 shows that the structure of oil hydraulic pump valve body 5, in valve body, be equiped with the modulating valve 13 and the safety valve 14 that communicate with transport pipe respectively, the work loads that modulating valve can the regulator solution compressing cylinder.Be equiped with four one- way valves 9,10,11,12 on the valve body, wherein, one- way valve 9,10 constitutes one group of fuel feeding and return line, and one-way valve 11,12 constitutes another group fuel feeding and return line, and each one-way valve communicates with transport pipe respectively.
With the supporting use of hydraulic jack of of the present utility model pair of oil circuit double fluid amount hydraulic hand-pump and two-way working, lift handle 7, to press hand 8 drive large pump cores 1 and small pump core 4 and move upward together, the working solution in the fuel tank 6 is sucked the cavity of the pump housing 2 and valve body 5 respectively; When pressing lower handle 7, large and small pump core moves downward under the effect of pressing hand 8 simultaneously, and working oil is injected fuel supply line, and promotes the piston rod movement of hydraulic jack, and the working oil of another chamber of hydraulic jack enters fuel tank 6 by return tube simultaneously.Four one- way valves 9,10,11,12 on the valve body replace selector valve to realize the lifting commutation of hydraulic jack, during work, unscrew one-way valve 9,11 counterclockwise, screw one- way valve 10,12 clockwise, perhaps unscrew one- way valve 10,12 counterclockwise, screw one-way valve 9,11 clockwise, just can realize the lifting commutation of hydraulic jack.When the work loads of hydraulic jack when setting load, large pump core 1 on the oil hydraulic pump and small pump core 4 co-operation increase the flow of oil hydraulic pump, at this moment, hydraulic jack will be in quick working state.When the work loads of hydraulic jack meets or exceeds setting load, though large pump core 1 still moves up and down with small pump core 4, but because pressure increases in the cavity, modulating valve 13 is opened under setting load automatically, working oil in the pump housing cavity does not enter fuel supply line, but leaks into fuel tank 6 by modulating valve, at this moment, the flow of oil hydraulic pump reduces, and hydraulic jack is in normal working.Therefore, flow can change with the load change of hydraulic jack.
In the ordinary course of things, setting load does not need to adjust separately.When setting load can not satisfy user's needs, can set load by 14 pairs of rotating regulation valves and adjust, when turning clockwise modulating valve, set load and increase, otherwise then reduce.
Claims (1)
1, a kind of pair of oil circuit double fluid amount hydraulic hand-pump, mainly form by fuel tank (6), valve body (5), the pump housing (2), handle (7) etc., it is characterized in that: the pump housing (2) is connected with valve body (5), be equiped with large pump core (1) in the pump housing (2), be equiped with small pump core (4) in the valve body (5), connect with steel wire ring washer (3) by the hole between large pump core and the small pump core, handle (7) flexibly connects with large pump core (1) by pressing hand (8); Be equiped with modulating valve (13) and safety valve (14) on the valve body (5), and be provided with four one-way valves (9), (10), (11), (12), each one-way valve links to each other with the transport pipe of hydraulic jack respectively, and wherein one-way valve (9), (10) and one-way valve (11), (12) constitute two groups of fuel feeding and return line respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00231675 CN2421426Y (en) | 2000-03-31 | 2000-03-31 | Double-oil-way double-flow band hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00231675 CN2421426Y (en) | 2000-03-31 | 2000-03-31 | Double-oil-way double-flow band hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2421426Y true CN2421426Y (en) | 2001-02-28 |
Family
ID=33594512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00231675 Expired - Fee Related CN2421426Y (en) | 2000-03-31 | 2000-03-31 | Double-oil-way double-flow band hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2421426Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837730A (en) * | 2017-02-28 | 2017-06-13 | 长治市神马科技有限公司 | Mining hand pump |
| CN109605814A (en) * | 2018-12-24 | 2019-04-12 | 浙江力得孚液压工具有限公司 | A kind of separate type pressure pump of single lever-type Regulation Control |
-
2000
- 2000-03-31 CN CN 00231675 patent/CN2421426Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837730A (en) * | 2017-02-28 | 2017-06-13 | 长治市神马科技有限公司 | Mining hand pump |
| CN109605814A (en) * | 2018-12-24 | 2019-04-12 | 浙江力得孚液压工具有限公司 | A kind of separate type pressure pump of single lever-type Regulation Control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201531483U (en) | Single-acting fast closing/double-acting boosting hydraulic cylinder | |
| CN212738265U (en) | Independent oil supply system for suspension mechanism and steering mechanism of agricultural tractor | |
| CN1326050A (en) | Linear reciprocating compressor | |
| CN201027153Y (en) | High-speed manual hydraulic jack | |
| CN2421426Y (en) | Double-oil-way double-flow band hydraulic pump | |
| US20030056508A1 (en) | Multilevel speed regulation jack and method of operation | |
| CN210795619U (en) | Jack hydraulic system suitable for heavy load | |
| CN2224944Y (en) | Hydraulic multi-channel switching valve | |
| CN207750302U (en) | A kind of lorry-mounted crane multi-way reversing device | |
| CN201908814U (en) | Two-stage pump cylinder and two-stage plunger piston combined pump cylinder pipe type pump | |
| CN202441833U (en) | Double-effect double-stage gas-liquid supercharging transmission apparatus | |
| CN2544114Y (en) | Double-action double-displacement hydraulic manual pump | |
| CN205370884U (en) | Many hydraulic cylinders of plunger type combination slush pump | |
| CN2285322Y (en) | Top pressing type machine for drawing out joint pipe | |
| CN201730894U (en) | Pneumatic and hydraulic cylinder with oil delivering and air storage functions | |
| CN2484418Y (en) | Double-cylinder hand-driven water-suction pump | |
| CN2310759Y (en) | Sleeve double-plunger hydraulic jack | |
| CN2182889Y (en) | Double direction and pressure-increasing cylinder | |
| CN2666875Y (en) | High pressure hydraulic jack for vehicle | |
| CN218542516U (en) | Single-plunger hydraulic pump | |
| CN2514171Y (en) | Hydraulic transmission oil pumping unit | |
| CN220060065U (en) | Valve-inserted type lifting hydraulic station with rapid and slow functions | |
| CN216381331U (en) | Motor auxiliary device for oil pumping unit | |
| CN2500868Y (en) | Energy-saving changeable section hydro-cylinder | |
| CN2330633Y (en) | Pneumatic hydraulic jack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |