CN204300036U - Super high pressure hydraulic can fast automatic off-load shock mitigation system - Google Patents
Super high pressure hydraulic can fast automatic off-load shock mitigation system Download PDFInfo
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- CN204300036U CN204300036U CN201420670023.9U CN201420670023U CN204300036U CN 204300036 U CN204300036 U CN 204300036U CN 201420670023 U CN201420670023 U CN 201420670023U CN 204300036 U CN204300036 U CN 204300036U
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Abstract
The utility model discloses the fast automatic off-load shock mitigation system of a kind of super high pressure hydraulic energy, comprise tapping valve, the z interface of tapping valve is communicated with master cylinder pressure relief pipe, the k interface of tapping valve is communicated with control oil pipe road, the x interface of tapping valve is communicated with drain line, the h interface of tapping valve is communicated with return line, and master cylinder pressure relief pipe is communicated with topping up case with master cylinder respectively simultaneously.System of the present utility model, by arranging an electric-hydraulic proportion tapping valve on Main cylinder, valve opening is utilized to carry out the adjustment of conic section ratio, the valve port opening degree of adjustment two periods of pressure leak process and opening time, meet master cylinder high-speed smooth releasing pressure automatically, novel structure, be easy to realize, fundamentally eliminate hydraulic vibration, significantly improve equipment validity and security reliability.
Description
Technical field
The utility model belongs to forging and calendering formation technical field, and for the fast automatic off-load damping in the backhaul of large hydraulic press master cylinder, being specifically related to a kind of super high pressure hydraulic can fast automatic off-load shock mitigation system.
Background technology
Subject of implementation is the 50MN master cylinder hydraulic pressure circuit system of 50MN hydraulic pressure press, can be super high pressure hydraulic for the Hydraulic scale of 50MN rank by power.
When hydraulic pressure press works, master cylinder pressurization, on workpiece steel plate, makes it to surrender and produces permanent deformation, makes steel plate smooth by force.When master cylinder returns, arrange the pre-unloader of small-sized bypass in master cylinder return conduits and carry out pressure release in advance, then master cylinder returns.Further, usually one group of accumulator is arranged in parallel for absorbing hydraulic shock during master cylinder work, protection press main frame and hydraulic system at main pipeline.Therefore, large discharge, high pressure (30Mpa) master cylinder work and quick pressure releasing backhaul time, just there will be the compression shock energy that a large amount of accumulator valve group carries out balancing master cylinder generation, but high-quality accumulator is expensive both at home and abroad, mate completely required accumulator valve group will hundreds of thousands unit, and from source, impact shock problem can not be solved comparatively thoroughly, make impact shock cause component life to reduce, equipment cost is high.This just needs a kind of means to solve the practical problem brought thus.
Utility model content
The purpose of this utility model is to provide the fast automatic off-load shock mitigation system of a kind of super high pressure hydraulic energy, and under solving prior art condition, large-tonnage master cylinder is difficult to satisfied steady quick pressure releasing requirement, makes impact shock cause component life to reduce, the problem that equipment cost is high.
The technical scheme that the utility model adopts is, the fast automatic off-load shock mitigation system of a kind of super high pressure hydraulic energy, comprise tapping valve, the z interface of tapping valve is communicated with master cylinder pressure relief pipe, the k interface of tapping valve is communicated with control oil pipe road, the x interface of tapping valve is communicated with drain line, and the h interface of tapping valve is communicated with return line, and master cylinder pressure relief pipe is communicated with topping up case with master cylinder respectively simultaneously.
The fast automatic off-load shock mitigation system of super high pressure hydraulic energy of the present utility model, its feature is also:
Tapping valve selects loop proportional flow tapping valve, comprises main valve and the pilot valve of control connection, the b outlet of pilot valve and the d orifice of main valve, the c outlet of main valve and a orifice of pilot valve.
The beneficial effects of the utility model are, by arranging an electric-hydraulic proportion tapping valve on Main cylinder, utilize valve opening to carry out the adjustment of conic section ratio, the valve port opening degree of adjustment two periods of pressure leak process and opening time, meet master cylinder high-speed smooth releasing pressure automatically, this novel structure, loop is simply easy to realize, and eliminates loaded down with trivial details accumulator valve group and the pre-unloader group of bypass, decreases unloading time, fundamentally eliminate hydraulic vibration, and system is simple and direct, cost is little; Circuit behavior is reliable rapidly, and unloading is steadily impacted without pipeline, not pipe pressure size, venting duration length, can meet unit and produce, significantly improve equipment validity and security reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fast automatic off-load shock mitigation system of the utility model;
Fig. 2 is the principle schematic of the loop proportional flow tapping valve in the utility model;
Fig. 3 the utility model tests the loop stream discharge curve obtained.
In figure, 1. master cylinder pressure relief pipe, 2. control oil pipe road, 3. loop proportional flow tapping valve, 4. drain line, 5. return line, 6. master cylinder, 7. topping up case, the 8. fast automatic off-load shock mitigation system of super high pressure hydraulic energy, 9. main valve, 10. pilot valve.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
With reference to Fig. 1, Fig. 2, the structure of the utility model super high pressure hydraulic fast automatic off-load shock mitigation system of energy (referred to as quick pressure releasing loop) is, comprise tapping valve 3, tapping valve 3 selects loop proportional flow tapping valve, comprise main valve 9 and the pilot valve 10 of control connection, the b outlet of pilot valve 10 and the d orifice of main valve 9, the c outlet of main valve 9 and a orifice of pilot valve 10, pilot valve 10 solenoid is connected with controller, accepts control signal and realizes controlling the oil circuit break-make of main valve 9;
In tapping valve 3, the z interface of main valve 9 is communicated with master cylinder pressure relief pipe 1, and in tapping valve 3, the h interface of main valve 9 is communicated with return line 5; In tapping valve 3, the k interface of pilot valve 10 is communicated with control oil pipe road 2, and in tapping valve 3, the x interface of pilot valve 10 is communicated with drain line 4, and above-mentioned structure is called that super high pressure hydraulic can fast automatic off-load shock mitigation system 8.
Super high pressure hydraulic can fast automatic off-load shock mitigation system 8 be communicated with topping up case 7 with master cylinder 6 by master cylinder pressure relief pipe 1 respectively simultaneously, and topping up case 7 is filled with super high pressure hydraulic energy in advance, and topping up case 7 supplements and oil return fast for the liquid of master cylinder 6.When the k interface Access Control oil of tapping valve 3, tapping valve 3 just can normally work, and after control fluid flows through control oil pipe road 2, a part enters the valve inner of tapping valve 3, and a part gets back to fuel tank by x interface.When the oil return openings of sizes of tapping valve 3 just can be controlled in tapping valve 3 during electromagnet energising, control the speed of quick relief.The super high pressure hydraulic of master cylinder 6 flows through tapping valve 3 by master cylinder pressure relief pipe 1, then flows back to fuel tank by the h interface of tapping valve 3, thus realizes the fast automatic off-load of super high pressure hydraulic energy to master cylinder 6.
With reference to Fig. 3, for present system tests the flow curve figure obtained.In use procedure, carry out two-stage pressure release segmentation according to this flow curve to system, one-level is wherein 0-4V voltage pressure release 50-1500ms, and secondary is 4-10V voltage pressure release 50-500ms.Voltage number and venting duration can be adjusted respectively according to the test case at scene, control the release of whole loop hydraulic energy.
The operation principle of the utility model device is,
Have employed the tapping valve 3 with the fast automatic draining function of ultra-high pressure high flow; this loop can within 0.5-2 second by the master cylinder pressure pressure release of 30Mpa to about 5Mpa; during to ensure master cylinder backhaul, each adjacent element is not hit, protection press main body and hydraulic system.
Claims (2)
1. the fast automatic off-load shock mitigation system of super high pressure hydraulic energy, its feature is: comprise tapping valve (3), the z interface of tapping valve (3) is communicated with master cylinder pressure relief pipe (1), the k interface of tapping valve (3) is communicated with control oil pipe road (2), the x interface of tapping valve (3) is communicated with drain line (4), the h interface of tapping valve (3) is communicated with return line (5), and master cylinder pressure relief pipe (1) is communicated with topping up case (7) with master cylinder (6) respectively simultaneously.
2. the fast automatic off-load shock mitigation system of super high pressure hydraulic energy according to claim 1, its feature is: described tapping valve (3) selects loop proportional flow tapping valve, comprise main valve (9) and the pilot valve (10) of control connection, the b outlet of pilot valve (10) and the d orifice of main valve (9), the c outlet of main valve (9) and a orifice of pilot valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670023.9U CN204300036U (en) | 2014-11-11 | 2014-11-11 | Super high pressure hydraulic can fast automatic off-load shock mitigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420670023.9U CN204300036U (en) | 2014-11-11 | 2014-11-11 | Super high pressure hydraulic can fast automatic off-load shock mitigation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204300036U true CN204300036U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420670023.9U Active CN204300036U (en) | 2014-11-11 | 2014-11-11 | Super high pressure hydraulic can fast automatic off-load shock mitigation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281874A (en) * | 2018-12-05 | 2019-01-29 | 恒天九五重工有限公司 | A kind of the major loop Load Relief System and pile press machine of guide's hydraulic control |
-
2014
- 2014-11-11 CN CN201420670023.9U patent/CN204300036U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281874A (en) * | 2018-12-05 | 2019-01-29 | 恒天九五重工有限公司 | A kind of the major loop Load Relief System and pile press machine of guide's hydraulic control |
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| GR01 | Patent grant |