CN205013413U - Hydraulic system of pipe pushing jack - Google Patents
Hydraulic system of pipe pushing jack Download PDFInfo
- Publication number
- CN205013413U CN205013413U CN201520766630.XU CN201520766630U CN205013413U CN 205013413 U CN205013413 U CN 205013413U CN 201520766630 U CN201520766630 U CN 201520766630U CN 205013413 U CN205013413 U CN 205013413U
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- CN
- China
- Prior art keywords
- relief valve
- valve
- electromagnetic relief
- mouth
- main top
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- Expired - Fee Related
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Abstract
Hydraulic system of pipe pushing jack relates to the hydraulic system field. Including oil tank, oil pump, first electromagnetic relief valve, second electromagnetic relief valve, third electromagnetic relief valve, magenetic exchange valve, overflow valve and many main top hydro -cylinders, the oil tank is connected to the input of oil pump, and the output of oil pump passes through the check valve and connects the P mouth of first electromagnetic relief valve and magenetic exchange valve's P mouth, what magenetic exchange valve's actuator port A connected overflow valve and many main top hydro -cylinders respectively has a pole chamber, the no pole chamber of main top hydro -cylinder is provided with three oil inlet, and magenetic exchange valve's actuator port B is connected to an oil inlet, and a second electromagnetic relief valve is connected respectively to two other oil inlets. The utility model discloses a no pole chamber of main top hydro -cylinder is provided with three oil inlet, has shortened the time of hydro -cylinder withdrawal return stroke greatly, provides work efficiency, avoids the unnecessary wasting of resources.
Description
Technical field
The utility model relates to hydraulic system field, is specially a kind of hydraulic system of push-bench.
Background technique
Existing push-bench is double pump fuel feeding hydraulic system, working pressure 31.5MPa, flow 80L/Min, can simultaneously for thrust multistage main top oil cylinder (first order cylinder diameter Φ 280mm such as 10 200T, bar footpath Φ 270mm, stroke 1880mm, second level cylinder diameter Φ 230mm, bar footpath Φ 220mm, cylinder diameter Φ 180mm, bar footpath 110mm, stroke 1620mm) use, its defect be push-bench in jack-in process when pushed up one joint cement pipe carry out second section jacking again time, due to the relation of cavity area ratio before and after oil cylinder, oil cylinder is retracted slowly, thus reduce working efficiency, waste time resource.
Model utility content
The purpose of this utility model is to provide a kind of hydraulic system of push-bench, and this system can shorten the time of main top oil cylinder retraction backhaul, increases work efficiency, avoids the unnecessary wasting of resources.
The technological scheme realizing above-mentioned purpose is: the hydraulic system of push-bench, it is characterized in that: comprise fuel tank, oil pump, first electromagnetic relief valve, second electromagnetic relief valve, 3rd electromagnetic relief valve, solenoid directional control valve, relief valve and multiple stage main top oil cylinder, the input end of described oil pump connects fuel tank, oil delivery side of pump connects the P mouth of the first electromagnetic relief valve and the P mouth of solenoid directional control valve by one-way valve, the T mouth of described first electromagnetic relief valve and the T mouth of solenoid directional control valve all connect fuel tank, the actuator port A of described solenoid directional control valve connects the rod chamber of relief valve and multiple stage main top oil cylinder respectively, outlet end on relief valve connects fuel tank, the rodless cavity of described main top oil cylinder is provided with the first filler opening, the second filler opening and the 3rd filler opening, first filler opening connects the actuator port B of solenoid directional control valve respectively by a high pressure manual ball valve, the P mouth of rear connection second electromagnetic relief valve is connect between second filler opening of described main top oil cylinder, 3rd filler opening of described main top oil cylinder also connects the P mouth of rear connection the 3rd electromagnetic relief valve, and the T mouth of the second electromagnetic relief valve and the T mouth of the 3rd electromagnetic relief valve connect fuel tank respectively.
The T mouth of the first electromagnetic relief valve, the outlet end of relief valve all connect fuel tank through return filter.
Working principle of the present utility model:
During jacking first segment cement pipe, solenoid directional control valve DT2 obtains electric, the first electromagnetic relief valve DT3 and obtains electric, the second solenoid valve DT4 and the equal dead electricity of the 3rd solenoid valve DT5, start oil pump, hydraulic oil enters the rodless cavity of jacking oil cylinder through the P mouth of solenoid directional control valve, B mouth, starts jacking.
After completing jacking first segment cement pipe, solenoid directional control valve DT1 obtain electric, the first electromagnetic relief valve DT3 dead electricity, the second solenoid valve DT4, the 3rd solenoid valve DT5 all electric, hydraulic oil enters the rod chamber of jacking oil cylinder through the P mouth of solenoid directional control valve, A mouth, and oil cylinder bounces back.
During jacking second section cement pipe, solenoid directional control valve DT2 obtains electric, the first electromagnetic relief valve DT3 and obtains electric, the second solenoid valve DT4 and the equal dead electricity of the 3rd solenoid valve DT5, start oil pump, hydraulic oil enters the rodless cavity of jacking oil cylinder through the P mouth of solenoid directional control valve, B mouth, start jacking, when needing pressurize in jack-in process, meta selected by solenoid directional control valve, first electromagnetic relief valve 8DT3 dead electricity, hydraulic oil is through the first electromagnetic relief valve oil sump tank.
The utility model adds the second filler opening and the 3rd filler opening at the rodless cavity of main top oil cylinder, the second filler opening increased is connected the second electromagnetic relief valve respectively with the 3rd filler opening and the 3rd electromagnetic relief valve leads directly to fuel tank, when main top oil cylinder stretches out, second electromagnetic relief valve and the equal dead electricity of the 3rd electromagnetism overflow, need to retract when having pushed up a joint cement pipe jacking oil cylinder, during commutation, second electromagnetic relief valve and the 3rd electromagnetism overflow electric, oil return is not directly by solenoid directional control valve oil return, to be overflow direct oil sump tank by the second electromagnetic relief valve and the 3rd electromagnetism, substantially reduce the time of oil cylinder retraction backhaul, provide working efficiency, avoid the unnecessary wasting of resources.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises fuel tank 1, two oil pump 2, first electromagnetic relief valve 3, second electromagnetic relief valves 4, the 3rd electromagnetic relief valve 5, solenoid directional control valve 6, relief valve 10, return filter 7 and multiple stage main top oil cylinders 8.
The input end of two oil pumps 2 all connects fuel tank 1, the output terminal of two oil pumps 2 also connects the P mouth of the first electromagnetic relief valve 3 and the P mouth of solenoid directional control valve 6 by one-way valve 9 after connecing, the P mouth of the first electromagnetic relief valve 3 is also other is connected to pressure gauge 15, the T mouth of the first electromagnetic relief valve 3 and the T mouth of solenoid directional control valve 6 all connect fuel tank 1, and the actuator port A of solenoid directional control valve 6 connects the rod chamber of relief valve 10 and multiple stage main top oil cylinder 8 respectively.
The rodless cavity of main top oil cylinder 8 is provided with the first filler opening 11, second filler opening 12 and the 3rd filler opening 13, first filler opening 11 connects the actuator port B of solenoid directional control valve 6 respectively by a high pressure manual ball valve 14, the P mouth of rear connection second electromagnetic relief valve 4 is connect between second filler opening 12 of main top oil cylinder 8,3rd filler opening 13 of main top oil cylinder 8 also connects the P mouth of rear connection the 3rd electromagnetic relief valve 5, and the T mouth of the second electromagnetic relief valve 4 and the T mouth of the 3rd electromagnetic relief valve 5 connect fuel tank 1 respectively.
The T mouth of the first electromagnetic relief valve 3, the outlet end of relief valve 10 all connect fuel tank through return filter 7.
Claims (2)
1. the hydraulic system of push-bench, it is characterized in that: comprise fuel tank, oil pump, first electromagnetic relief valve, second electromagnetic relief valve, 3rd electromagnetic relief valve, solenoid directional control valve, relief valve and multiple stage main top oil cylinder, the input end of described oil pump connects fuel tank, oil delivery side of pump connects the P mouth of the first electromagnetic relief valve and the P mouth of solenoid directional control valve by one-way valve, the T mouth of described first electromagnetic relief valve and the T mouth of solenoid directional control valve all connect fuel tank, the actuator port A of described solenoid directional control valve connects the rod chamber of relief valve and multiple stage main top oil cylinder respectively, outlet end on relief valve connects fuel tank, the rodless cavity of described main top oil cylinder is provided with the first filler opening, the second filler opening and the 3rd filler opening, first filler opening connects the actuator port B of solenoid directional control valve respectively by a high pressure manual ball valve, the P mouth of rear connection second electromagnetic relief valve is connect between second filler opening of described main top oil cylinder, 3rd filler opening of described main top oil cylinder also connects the P mouth of rear connection the 3rd electromagnetic relief valve, and the T mouth of the second electromagnetic relief valve and the T mouth of the 3rd electromagnetic relief valve connect fuel tank respectively.
2. the hydraulic system of push-bench according to claim 1, is characterized in that: the T mouth of the first electromagnetic relief valve, the outlet end of relief valve all connect fuel tank through return filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766630.XU CN205013413U (en) | 2015-09-30 | 2015-09-30 | Hydraulic system of pipe pushing jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520766630.XU CN205013413U (en) | 2015-09-30 | 2015-09-30 | Hydraulic system of pipe pushing jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013413U true CN205013413U (en) | 2016-02-03 |
Family
ID=55212022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520766630.XU Expired - Fee Related CN205013413U (en) | 2015-09-30 | 2015-09-30 | Hydraulic system of pipe pushing jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139617A (en) * | 2018-10-19 | 2019-01-04 | 安徽卓科智能装备有限公司 | A kind of novel high-pressure electric oil pump |
-
2015
- 2015-09-30 CN CN201520766630.XU patent/CN205013413U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139617A (en) * | 2018-10-19 | 2019-01-04 | 安徽卓科智能装备有限公司 | A kind of novel high-pressure electric oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20160930 |