CN202685338U - Hydraulic system of high-speed hydraulic stretcher - Google Patents
Hydraulic system of high-speed hydraulic stretcher Download PDFInfo
- Publication number
- CN202685338U CN202685338U CN 201220367342 CN201220367342U CN202685338U CN 202685338 U CN202685338 U CN 202685338U CN 201220367342 CN201220367342 CN 201220367342 CN 201220367342 U CN201220367342 U CN 201220367342U CN 202685338 U CN202685338 U CN 202685338U
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- way valve
- hydraulic
- outlet
- quick cylinder
- oil tank
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic system of a high-speed hydraulic stretcher, and the hydraulic system comprises an oil pump, an oil tank, a main oil tank, a fast oil cylinder and relevant hydraulic parts, which are connected with one another through oil pipes, and the hydraulic system is characterized in that the hydraulic parts include a three-position two-way valve, a two-position two-way valve and a supercharger, wherein an inlet a of the three-position two-way valve is connected with an outlet of the oil pump, an inlet b of the three-position two-way valve is connected with the oil tank through a pressure regulating valve, an outlet c of the three-position two-way valve is connected with an upper cavity of the fast oil tank, an outlet d of the three-position two-way valve is connected with an inlet e of the two-position two-way valve, an inlet f of the two-position two-way valve is connected with the oil tank, an outlet of the two-position two-way valve is connected with a lower cavity of the fast oil tank through a retaining valve, and an outlet h of the two-position two-way valve is connected with the lower cavity of the fast oil tank through the supercharger. Due to adopting the hydraulic system, the fast action of the fast oil tank can be realized, the working efficiency of the stretcher can be improved, and the fast oil tank can be miniaturized.
Description
Technical field
The utility model relates to a kind of hydraulic test, is specifically related to a kind of hydraulic system of high-speed hydraulic stretching-machine.
Background technology
The high-speed hydraulic stretching-machine belongs to a kind of hydraulic test, extensive use on the drawing and forming of electric machine casing, filter case etc.The maximum characteristics of high-speed hydraulic stretching-machine are that it has master cylinder and Quick cylinder simultaneously, and the effect of master cylinder is for the stretching implementation process provides power, and the effect of Quick cylinder is the advance and retreat speed of accelerating the stretching-machine idle stroke, thereby improves the stretching-machine operating efficiency.The quick return initial period of high-speed hydraulic stretching-machine after finishing the workpiece drawing and forming, owing to also not yet throwing off between workpiece and the mould, Quick cylinder has very large resistance, for overcoming above-mentioned resistance, to increase the oil cylinder pulling force by the sectional area that strengthens Quick cylinder, but after strengthening the sectional area of Quick cylinder, under the prerequisite of same oil inlet quantity, will reduce the responsiveness of Quick cylinder conversely, and then affect the hydraulic tensioner operating efficiency.
Summary of the invention
In view of the deficiencies in the prior art, the technical problems to be solved in the utility model is to be to provide a kind of high-speed hydraulic stretching-machine hydraulic system that can increase work efficiency and make the Quick cylinder miniaturization.
For solving the problems of the technologies described above, the utility model takes following technical scheme to finish:
The hydraulic system of high-speed hydraulic stretching-machine, comprise the oil pump, fuel tank, master cylinder, Quick cylinder and the relevant hydraulic part that connect by oil pipe line, it is characterized in that: hydraulic part comprises three two-port valves, two position two-way valve and boosters, the a import of three two-port valves connects the outlet of oil pump, the b import connects fuel tank through pressure regulator valve, the c outlet connects the epicoele of Quick cylinder, the d outlet connects the e import of two position two-way valve, the f import of two position two-way valve connects fuel tank, the g outlet connects the cavity of resorption of Quick cylinder through check valve, the h outlet connects the cavity of resorption of Quick cylinder through booster.The design of above-mentioned hydraulic system, make Quick cylinder pass through the booster fuel feeding at the backhaul initial period, so the resistance when producing larger pulling force and overcoming workpiece and mould and throw off is (although this process speed is slower, but the time is very short, generally about 0.5 second), after workpiece and mould are thrown off fully, Quick cylinder recovers by the oil pump DFF Direct Fuel Feed, rapidly backhaul of Quick cylinder owing to having solved the technical problem that overcomes resistance, is amassed so Quick cylinder can have small cross sections, make the Quick cylinder miniaturization, under the prerequisite of same oil inlet quantity, the responsiveness of Quick cylinder gets a promotion, and improves the operating efficiency of hydraulic tensioner.
Three other hydraulic control one-way valves that are provided with of pipeline L1 that two-port valve c outlet connects the Quick cylinder epicoele, pipeline L1 is connected in the import of hydraulic control one-way valve, and the connecting line L2 of check valve and Quick cylinder cavity of resorption is connected in outlet.Descending differential fuel feeding, the speed that the lifting Quick cylinder moves downwards, operating efficiency of raising hydraulic tensioner of providing of Quick cylinder is provided for this.
Description of drawings
The utility model has following accompanying drawing:
Fig. 1 is structure principle chart of the present utility model.
The specific embodiment
As shown in the figure, the hydraulic system of high-speed hydraulic stretching-machine of the present utility model, comprise the oil pump 9 that connects by oil pipe line, fuel tank 10, master cylinder 1, Quick cylinder 2 and relevant hydraulic part, hydraulic part comprises three two-port valves 7, two position two-way valve 5 and booster 6, the a import of three two-port valves 7 connects the outlet of oil pump 9, the b import connects fuel tank 10 through pressure regulator valve 8, the c outlet connects the epicoele of Quick cylinder 2, the d outlet connects the e import of two position two-way valve 5, the f import of two position two-way valve 5 connects fuel tank 10, the g outlet connects the cavity of resorption of Quick cylinder 2 through check valve 4, the h outlet connects the cavity of resorption of Quick cylinder 2 through booster 6, three other hydraulic control one-way valves 3 that are provided with of pipeline L1 that two-port valve c outlet connects the Quick cylinder epicoele, pipeline L1 is connected in the import of hydraulic control one-way valve 3, and the connecting line L2 of check valve and Quick cylinder cavity of resorption is connected in outlet.
The utility model is like this work: at first oil pump 9 starts, the F1 energising of three two-port valves 7, the fuel-displaced epicoele that directly enters Quick cylinder 2 of oil pump, promoting Quick cylinder moves downwards, this moment, hydraulic control one-way valve 3 was owing to oil pressure is opened, so most of oil return meeting of Quick cylinder 2 returns the epicoele of Quick cylinder 2 by hydraulic control one-way valve 3, realize differential fuel feeding, promote the Quick cylinder speed of action downwards, after the downward action of Quick cylinder puts in place, master cylinder 1 is devoted oneself to work workpiece is carried out drawing and forming, after the workpiece drawing and forming is finished, Quick cylinder 2 beginning backhauls, this moment three two-port valves 7 F2, the F13 of two position two-way valve 5 switches on simultaneously, the cavity of resorption fuel feeding of the backward Quick cylinder 2 of the fuel-displaced supercharging through booster 6 of oil pump, make Quick cylinder produce larger resistance when overcoming workpiece with the mould disengagement to upper pulling force (although this process speed is slower, but the time is very short, generally about 0.5 second), after workpiece and mould are thrown off fully, the F13 dead electricity of two position two-way valve, the cavity of resorption of Quick cylinder 2 recovers by the oil pump DFF Direct Fuel Feed, so the rapid backhaul of Quick cylinder.Owing to having realized the fast advance and retreat of idle stroke, so greatly improved the operating efficiency of high-speed hydraulic stretching-machine.
Claims (2)
1. the hydraulic system of high-speed hydraulic stretching-machine, comprise the oil pump, fuel tank, master cylinder, Quick cylinder and the relevant hydraulic part that connect by oil pipe line, it is characterized in that: hydraulic part comprises three two-port valves, two position two-way valve and boosters, the a import of three two-port valves connects the outlet of oil pump, the b import connects fuel tank through pressure regulator valve, the c outlet connects the epicoele of Quick cylinder, the d outlet connects the e import of two position two-way valve, the f import of two position two-way valve connects fuel tank, the g outlet connects the cavity of resorption of Quick cylinder through check valve, the h outlet connects the cavity of resorption of Quick cylinder through booster.
2. the hydraulic system of high-speed hydraulic stretching-machine according to claim 1, it is characterized in that: three other hydraulic control one-way valves that are provided with of pipeline L1 that two-port valve c outlet connects the Quick cylinder epicoele, pipeline L1 is connected in the import of hydraulic control one-way valve, and the connecting line L2 of check valve and Quick cylinder cavity of resorption is connected in outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367342 CN202685338U (en) | 2012-07-27 | 2012-07-27 | Hydraulic system of high-speed hydraulic stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367342 CN202685338U (en) | 2012-07-27 | 2012-07-27 | Hydraulic system of high-speed hydraulic stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202685338U true CN202685338U (en) | 2013-01-23 |
Family
ID=47541004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367342 Expired - Fee Related CN202685338U (en) | 2012-07-27 | 2012-07-27 | Hydraulic system of high-speed hydraulic stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202685338U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277356A (en) * | 2013-05-27 | 2013-09-04 | 河北汉智数控机械有限公司 | Oil hydraulic system of machining equipment |
| CN104329304A (en) * | 2014-10-10 | 2015-02-04 | 中国重型机械研究院股份公司 | Multi-level pressure adjusting device of stretching straightener pincer mechanism |
-
2012
- 2012-07-27 CN CN 201220367342 patent/CN202685338U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277356A (en) * | 2013-05-27 | 2013-09-04 | 河北汉智数控机械有限公司 | Oil hydraulic system of machining equipment |
| CN104329304A (en) * | 2014-10-10 | 2015-02-04 | 中国重型机械研究院股份公司 | Multi-level pressure adjusting device of stretching straightener pincer mechanism |
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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: 20130123 Termination date: 20130727 |