CN201273253Y - Push-pull type hydraulic pump - Google Patents
Push-pull type hydraulic pump Download PDFInfo
- Publication number
- CN201273253Y CN201273253Y CNU2008201630380U CN200820163038U CN201273253Y CN 201273253 Y CN201273253 Y CN 201273253Y CN U2008201630380 U CNU2008201630380 U CN U2008201630380U CN 200820163038 U CN200820163038 U CN 200820163038U CN 201273253 Y CN201273253 Y CN 201273253Y
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- China
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- cylinder
- oil
- hydraulic
- handle
- way valve
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- Expired - Fee Related
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Abstract
The utility model relates to a push-pull hydraulic pump belonging to the technical field of hydraulic hoisting apparatuses, which is characterized in that a pneumatic piston which is engaged with a hydraulic pump cylinder in a sliding way is arranged in the hydraulic pump cylinder to form an upper pump cylinder and a lower pump cylinder, the pneumatic piston is connected with a handle through a connecting bar, the upper pump cylinder respectively establishes oil way connection with an oil tank and a hydraulic cylinder through an upper cylinder oil-inlet one-way valve and an upper cylinder oil-discharge one-way valve, and the lower pump cylinder respectively establishes oil way connection with the oil tank and the hydraulic cylinder through a lower cylinder oil-inlet one-way valve and a lower cylinder oil-discharge one-way valve, and the hydraulic cylinder and the oil tank establish oil way connection through a stop valve. The push-pull hydraulic pump has novel design and reasonable concept, which achieves oil injection and pressure boost to the hydraulic cylinder to lift weight in the process of uplifting and pushing down a hydraulic handle, saves time and labor, improves working efficiency, and is particularly suitable for hydraulic fork trucks.
Description
Technical field
The utility model belongs to Hydraulic for lifting load device technique field, is specifically related to a kind of push-pull mode oil hydraulic pump.
Background technique
Conventional hydraulic holder car, hydraulic pressure fork truck etc. utilizes hydraulic principle to carry out the device of lifting, the gravity that forces piston to carve the clothes weight by pressing down of hydraulic handle when handling goods rises and does work, propose the effect of just playing oil suction on the hydraulic handle, press down ability oil extraction in the process and force weight to raise in hydraulic handle, just carry on the hydraulic handle, press down one and could produce the oil extraction weight that raises back and forth, and hydraulic pressure fork truck lifting weight generally needs bigger climb, this just needs back and forth the quantity of pressure-raising hydraulic handle more, time and effort consuming, working efficiency is low.
The model utility content
The utility model aims to provide a kind of push-pull mode oil hydraulic pump technological scheme up, that can both carry out the oiling supercharging by process down, to overcome problems of the prior art.
Described push-pull mode oil hydraulic pump, it is characterized in that the built-in pneumaticpiston that is slidingly matched with it of hydraulic pump cylinder constitutes upward pumping cylinder, following pumping cylinder, pneumaticpiston is connected with handle by connecting rod, last pumping cylinder is set up oil circuit with fuel tank, oil hydraulic cylinder and is connected by upper cylinder half in line check valve, upper cylinder half oil extraction one-way valve respectively, following pumping cylinder is set up oil circuit with fuel tank, oil hydraulic cylinder and is connected by following cylinder in line check valve, following cylinder oil extraction one-way valve respectively, and oil hydraulic cylinder is set up oil circuit with fuel tank by stop valve and is connected.
Described push-pull mode oil hydraulic pump is characterized in that described connecting rod and handle are slidingly matched, and handle swings up and down around fulcrum.
Above-mentioned push-pull mode design of hydraulic pump novelty, reasonable idea, time saving and energy saving, increase work efficiency by carrying on the hydraulic handle, all realize oil hydraulic cylinder oiling supercharging and the lifting weight down by process, be particularly suitable for using in the hydraulic pressure fork truck.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1-handle, 2-connecting rod, 3-hydraulic pump cylinder, 3a-last pumping cylinder, 3b-following pumping cylinder, 4-pneumaticpiston, 5-upper cylinder half in line check valve, 6-following cylinder in line check valve, 7-following cylinder oil extraction one-way valve, 8-upper cylinder half oil extraction one-way valve, 9-oil hydraulic cylinder, 10-hydraulic piston, 11-weight, 12-stop valve, 13-fuel tank.
Embodiment
Now, describe embodiment of the present utility model in detail in conjunction with Figure of description:
Be illustrated in figure 1 as the push-pull mode oil hydraulic pump, the hydraulic pump cylinder 3 built-in pneumaticpistons that are slidingly matched with it 4 constitute goes up pumping cylinder 3a, following pumping cylinder 3b, and pneumaticpiston 4 is connected with handle 1 by connecting rod 2, and connecting rod 2 is slidingly matched with handle 1, handle 1 swings up and down around fulcrum 14, saves working space.Last pumping cylinder 3a sets up oil circuit by upper cylinder half in line check valve 5, upper cylinder half oil extraction one-way valve 8 with fuel tank 13, oil hydraulic cylinder 9 respectively and is connected.Following pumping cylinder 3b sets up oil circuit with fuel tank 13, oil hydraulic cylinder 9 and is connected by following cylinder in line check valve 6, following cylinder oil extraction one-way valve 7 respectively, and oil hydraulic cylinder 9 is set up oil circuit with fuel tank 13 by stop valve 12 and is connected.Handle 1 drives when carrying on the pneumaticpiston 4, and following pumping cylinder 3b volume enlarges and vacuum occurs, and following cylinder oil extraction one-way valve 7 is closed, cylinder in line check valve 6 is opened down, the hydraulic oil atmospheric effect lower fuel tank 13 in through under cylinder in line check valve 6 enter under in the pumping cylinder 3b; Handle 1 drives when carrying on the pneumaticpiston 4, upper cylinder half in line check valve 5 is closed, and upper cylinder half oil extraction one-way valve 8 is opened, and the hydraulic oil among the last pumping cylinder 3a enters oil hydraulic cylinder 9 through upper cylinder half oil extraction one-way valve 8, hydraulic piston 10 jack-up that oil hydraulic cylinder 9 is built-in place weight 11 on the hydraulic piston 10 by jack-up.When handle 1 drive pneumaticpiston 4 presses down, upper cylinder half oil extraction one-way valve 8 is closed, upper cylinder half in line check valve 5 is opened, vacuum appears in last pumping cylinder 3a volume expansion, hydraulic oil in atmospheric effect lower fuel tank 13 is in upper cylinder half in line check valve 5 enters pumping cylinder 3a, when handle 1 drive pneumaticpiston 4 presses down, following cylinder in line check valve 6 is closed, following cylinder oil extraction one-way valve 7 is opened, hydraulic oil warp among following pumping cylinder 3b cylinder oil extraction one-way valve 7 down enters oil hydraulic cylinder 9, hydraulic piston 10 jack-up that oil hydraulic cylinder 9 is built-in place weight 11 on the hydraulic piston 10 by jack-up.When needs during in a certain position, only need stop to swing up and down of handle 1 with weight 11 jackings, the hydraulic couplings in the oil hydraulic cylinder 9 make upper cylinder half oil extraction one-way valve 8, cylinder oil extraction one-way valve 7 is closed down, and the hydraulic piston 10 of oil hydraulic cylinder 9 is motionless with regard to self-locking.Stop valve 12 is closed during jacking work, in the time the hydraulic piston 10 of oil hydraulic cylinder 9 need being put down, opens stop valve 12, and the hydraulic oil in the oil hydraulic cylinder 9 is discharged into fuel tank 13 through stop valve 12.
Claims (2)
1. push-pull mode oil hydraulic pump, it is characterized in that pumping cylinder (3a) on the built-in pneumaticpiston that is slidingly matched with it of hydraulic pump cylinder (3) (4) formation, following pumping cylinder (3b), pneumaticpiston (4) is connected with handle (1) by connecting rod (2), last pumping cylinder (3a) is respectively by upper cylinder half in line check valve (5), upper cylinder half oil extraction one-way valve (8) and fuel tank (13), oil hydraulic cylinder (9) is set up oil circuit and is connected, following pumping cylinder (3b) passes through cylinder in line check valve (6) down respectively, following cylinder oil extraction one-way valve (7) and fuel tank (13), oil hydraulic cylinder (9) is set up oil circuit and is connected, and oil hydraulic cylinder (9) is set up oil circuit with fuel tank (13) by stop valve (12) and is connected.
2. push-pull mode oil hydraulic pump as claimed in claim 1 is characterized in that described connecting rod (2) and handle (1) are slidingly matched, and handle (1) swings up and down around fulcrum (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201630380U CN201273253Y (en) | 2008-08-21 | 2008-08-21 | Push-pull type hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201630380U CN201273253Y (en) | 2008-08-21 | 2008-08-21 | Push-pull type hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201273253Y true CN201273253Y (en) | 2009-07-15 |
Family
ID=40883601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201630380U Expired - Fee Related CN201273253Y (en) | 2008-08-21 | 2008-08-21 | Push-pull type hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201273253Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482532A (en) * | 2013-05-14 | 2014-01-01 | 京山县杰美实业有限责任公司 | Novel differential type hydraulic loading and unloading vehicle |
| CN110836721A (en) * | 2019-11-28 | 2020-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | Static frequency testing device and method for blades of blisk of aircraft engine |
| CN112012900A (en) * | 2020-08-28 | 2020-12-01 | 中国水利水电科学研究院 | Manual hydraulic pump |
-
2008
- 2008-08-21 CN CNU2008201630380U patent/CN201273253Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482532A (en) * | 2013-05-14 | 2014-01-01 | 京山县杰美实业有限责任公司 | Novel differential type hydraulic loading and unloading vehicle |
| CN110836721A (en) * | 2019-11-28 | 2020-02-25 | 中国航发沈阳黎明航空发动机有限责任公司 | Static frequency testing device and method for blades of blisk of aircraft engine |
| CN112012900A (en) * | 2020-08-28 | 2020-12-01 | 中国水利水电科学研究院 | Manual hydraulic pump |
| CN112012900B (en) * | 2020-08-28 | 2021-11-19 | 中国水利水电科学研究院 | Manual hydraulic 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: 20090715 Termination date: 20110821 |