CN203623017U - Hydraulic machine main cylinder upper cavity safety protecting system - Google Patents
Hydraulic machine main cylinder upper cavity safety protecting system Download PDFInfo
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- CN203623017U CN203623017U CN201320688012.9U CN201320688012U CN203623017U CN 203623017 U CN203623017 U CN 203623017U CN 201320688012 U CN201320688012 U CN 201320688012U CN 203623017 U CN203623017 U CN 203623017U
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- valve
- inserted valve
- epicoele
- solenoid directional
- outlet
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Abstract
The utility model relates to a hydraulic machine main cylinder upper cavity safety protecting system. A fifth cartridge valve inlet is connected with an inlet of an upper cavity safety module. A fifth cartridge valve outlet is connected with an outlet of the upper cavity safety module through an inner outlet channel which is connected with an inlet of a third cartridge valve and an inlet of a fourth cartridge valve through two bypass pipelines, and outlets of the two cartridge valves are connected with an oil tank. The inner outlet channel is connected with liquid control openings of the third cartridge valve and the fourth cartridge valve through a third solenoid directional valve and a fourth solenoid directional valve respectively. Inlet pipelines of the third cartridge valve and the fourth cartridge valve are connected with a third pressure sensor and a fourth pressure sensor respectively. Signals of the two pressure sensors are provided for the third solenoid directional valve and the fourth solenoid directional valve respectively. Inlets at the two ends of a shuttle valve are connected with an inlet and an outlet of a fifth cartridge valve respectively. An outlet of the shuttle valve is connected with a liquid control opening of the fifth cartridge valve through a fifth solenoid directional valve. According to the system, pressure maintaining can be achieved, oil and is provided for a main cylinder upper cavity, or oil is discharged to the oil tank.
Description
Technical field
The utility model relates to a kind of hydraulic press, particularly a kind of hydraulic press master cylinder epicoele safety system.
Background technology
High-speed, high precision hydraulic press generally adopts whole steel sheet welding integral formula structure fuselage body, comprises entablature, column, workbench and slide block, and entablature, column, slide block form the fuselage body of sealing.Column is provided with vertical guide rail structure, slide block is between entablature and workbench, master cylinder is fixed in the centre bore of entablature, and main cylinder piston-rod lower end is connected with upper end of slide block with locknut or screw, and slide block can move up and down along column guide rail under the driving of master cylinder.Master cylinder cylinder bottom has macropore, and the topping up pressure valve that oil filling capacity is large is installed.Master cylinder hydraulic pressure chamber is divided into epicoele and cavity of resorption by master cylinder piston, will promote descent of piston to epicoele pump oil, drives slide block down simultaneously, and cavity of resorption is to tank drainback; To promote piston stroking upward to cavity of resorption pump oil, and be with movable slider backhaul up simultaneously, epicoele through prefill valve to tank drainback; Epicoele and cavity of resorption be fuel cut-off or oil return all, and slide block is in stopping or packing state.
The epicoele of servo hydraulic machine master cylinder is directly connected with the oil-out of the epicoele gear pump of driven by servomotor, by the forward or reverse of servomotor, drive epicoele gear pump to master cylinder epicoele fuel feeding, or to tank drainback, between master cylinder epicoele hydraulic fluid port and epicoele gear pump oil-out, need to increase safety valve piece, when master cylinder epicoele superpressure, pressure is discharged to fuel tank by safety valve piece.
Utility model content
The purpose of this utility model is; overcome problems of the prior art; a kind of hydraulic press master cylinder epicoele safety system is provided, hydraulic oil sealing can be realized to pressurize in master cylinder epicoele, the oil of epicoele gear pump can be sent into master cylinder epicoele or released again.
For solving above technical problem, a kind of hydraulic press master cylinder epicoele safety system provided by the utility model, comprise the 3rd inserted valve C3, the 4th inserted valve C4 and the 5th inserted valve C5, the entrance of the 5th inserted valve C5 is connected with the entrance P1 of epicoele security module CF2, the outlet of the 5th inserted valve C5 is connected with the outlet of epicoele security module CF2 by the inside exit passageway of epicoele security module CF2, this inside exit passageway is also provided with two bypass ducts, described in two, bypass duct is connected with the entrance of described the 3rd inserted valve C3 and the 4th inserted valve C4 respectively, the outlet of described the 3rd inserted valve C3 and the 4th inserted valve C4 is connected with fuel tank respectively.
With respect to prior art, the utility model has been obtained following beneficial effect: when use, the entrance P1 of epicoele security module CF2 is connected with epicoele gear delivery side of pump, and the outlet of epicoele security module CF2 is connected with master cylinder epicoele; The 3rd inserted valve C3, the 4th inserted valve C4 and the 5th inserted valve C5 default conditions are for opening, and the hydraulic oil of epicoele gear pump B2 outlet is released to fuel tank by the 3rd inserted valve C3 or the 4th inserted valve C4 by default; When the 5th inserted valve C5 opens, when the 3rd inserted valve C3 and the 4th inserted valve C4 close, the hydraulic oil of epicoele gear pump B2 outlet enters master cylinder epicoele; When the 3rd inserted valve C3, the 4th inserted valve C4 and the 5th inserted valve C5 close, hydraulic oil is closed in master cylinder epicoele, realizes pressure holding function.
As further preferred version of the present utility model, the inside exit passageway of described epicoele security module CF2 is connected with the hydraulic control mouth of the 3rd inserted valve C3 and the 4th inserted valve C4 with the 4th solenoid directional control valve YV4 by the 3rd solenoid directional control valve YV3 respectively; On the entrance pipe of the 3rd inserted valve C3 and the 4th inserted valve C4, be respectively equipped with pressure sensor interface and be separately installed with the 3rd pressure sensor E3 and the 4th pressure sensor E4, the signal of the 3rd pressure sensor E3 and the 4th pressure sensor E4 offers respectively the 3rd solenoid directional control valve YV3 and the 4th solenoid directional control valve YV4; The import at shuttle valve D5 two ends is connected with the import and export of the 5th inserted valve C5 respectively, and the centre exit of shuttle valve D5 is connected with the hydraulic control mouth of the 5th inserted valve C5 by the 5th solenoid directional control valve YV5.The 3rd pressure sensor E3 or the 4th pressure sensor E4 detect the outlet pressure of the 5th inserted valve C5 when normal compared with setting value, control the 3rd solenoid directional control valve YV3 or the 4th solenoid directional control valve YV4 obtains electric, the hydraulic control mouth of the 3rd inserted valve C3 or the 4th inserted valve C4 is built pressure, the 3rd inserted valve C3 or the 4th inserted valve C4 close, and the hydraulic oil of epicoele gear pump B2 outlet enters master cylinder epicoele by the 5th inserted valve C5; The 3rd inserted valve C3 and the 4th inserted valve C4 are two Safety Redundancy designs, and one breaks down, an other normal job; Shuttle valve D5 is equivalent to the valve of two check valve combinations, and its effect is equivalent to disjunction gate, and the import or export of the 5th inserted valve C5 exists oil pressure, and shuttle valve D5 all can build pressure at the hydraulic control mouth of the 5th inserted valve C5 by the 5th solenoid directional control valve YV5; The 5th solenoid directional control valve YV5 not when electric, the hydraulic control mouth of the 5th inserted valve C5 communicates with fuel tank, the 5th inserted valve C5 opens; When pressurize, the 5th solenoid directional control valve YV5 obtains electric, the hydraulic control mouth of the 5th inserted valve C5 is built to press the 5th inserted valve C5 is closed, the 3rd inserted valve C3 and the 4th inserted valve C4 also close simultaneously, hydraulic oil is closed in master cylinder epicoele, realize pressure holding function, avoid hydraulic oil long duration of action on gear pump, infringement pump.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, accompanying drawing only provides reference and explanation use, non-in order to limit the utility model.
Fig. 1 is the hydraulic schematic diagram of the utility model hydraulic press master cylinder epicoele safety system.
In figure: CF2. epicoele security module; C3. the 3rd inserted valve; C4. the 4th inserted valve; C5. the 5th inserted valve; E3. the 3rd pressure sensor; E4. the 4th pressure sensor; YV3. the 3rd solenoid directional control valve; YV4. the 4th solenoid directional control valve; YV5. the 5th solenoid directional control valve.
The specific embodiment
As shown in Figure 1, the utility model hydraulic press master cylinder epicoele safety system, comprise the 3rd inserted valve C3, the 4th inserted valve C4 and the 5th inserted valve C5, the entrance of the 5th inserted valve C5 is connected with the entrance P1 of epicoele security module CF2, the outlet of the 5th inserted valve C5 is connected with the outlet of epicoele security module CF2 by the inside exit passageway of epicoele security module CF2, this inside exit passageway is also provided with two bypass ducts, two bypass ducts are connected with the entrance of the 3rd inserted valve C3 and the 4th inserted valve C4 respectively, the outlet of the 3rd inserted valve C3 and the 4th inserted valve C4 is connected with fuel tank respectively.
The inside exit passageway of epicoele security module CF2 is connected with the hydraulic control mouth of the 3rd inserted valve C3 and the 4th inserted valve C4 with the 4th solenoid directional control valve YV4 by the 3rd solenoid directional control valve YV3 respectively; On the entrance pipe of the 3rd inserted valve C3 and the 4th inserted valve C4, be respectively equipped with pressure sensor interface and be separately installed with the 3rd pressure sensor E3 and the 4th pressure sensor E4, the signal of the 3rd pressure sensor E3 and the 4th pressure sensor E4 offers respectively the 3rd solenoid directional control valve YV3 and the 4th solenoid directional control valve YV4; The import at shuttle valve D5 two ends is connected with the import and export of the 5th inserted valve C5 respectively, and the centre exit of shuttle valve D5 is connected with the hydraulic control mouth of the 5th inserted valve C5 by the 5th solenoid directional control valve YV5.
The entrance P1 of epicoele security module CF2 is connected with epicoele gear delivery side of pump, and the outlet of epicoele security module CF2 is connected with master cylinder epicoele.The 3rd inserted valve C3, the 4th inserted valve C4 and the 5th inserted valve C5 default conditions are for opening, and the hydraulic oil of epicoele gear pump B2 outlet is released to fuel tank by the 3rd inserted valve C3 or the 4th inserted valve C4 by default; When the 5th inserted valve C5 opens, when the 3rd inserted valve C3 and the 4th inserted valve C4 close, the hydraulic oil of epicoele gear pump B2 outlet enters master cylinder epicoele.The 3rd pressure sensor E3 or the 4th pressure sensor E4 detect the outlet pressure of the 5th inserted valve C5 when normal compared with setting value, control the 3rd solenoid directional control valve YV3 or the 4th solenoid directional control valve YV4 obtains electric, the hydraulic control mouth of the 3rd inserted valve C3 or the 4th inserted valve C4 is built pressure, the 3rd inserted valve C3 or the 4th inserted valve C4 close, and the hydraulic oil of epicoele gear pump B2 outlet enters master cylinder epicoele by the 5th inserted valve C5; The 3rd inserted valve C3 and the 4th inserted valve C4 are two Safety Redundancy designs, and one breaks down, an other normal job.
Shuttle valve D5 is equivalent to the valve of two check valve combinations, and its effect is equivalent to disjunction gate, and the import or export of the 5th inserted valve C5 exists oil pressure, and shuttle valve D5 all can build pressure at the hydraulic control mouth of the 5th inserted valve C5 by the 5th solenoid directional control valve YV5; The 5th solenoid directional control valve YV5 not when electric, the hydraulic control mouth of the 5th inserted valve C5 communicates with fuel tank, the 5th inserted valve C5 opens; When pressurize, the 5th solenoid directional control valve YV5 obtains electric, the hydraulic control mouth of the 5th inserted valve C5 is built to press the 5th inserted valve C5 is closed, the 3rd inserted valve C3 and the 4th inserted valve C4 also close simultaneously, hydraulic oil is closed in master cylinder epicoele, realize pressure holding function, avoid hydraulic oil long duration of action on gear pump, infringement pump.
The foregoing is only the better possible embodiments of the utility model, non-ly therefore limit to scope of patent protection of the present utility model.In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.The utility model can pass through or adopt existing techniques in realizing without the technical characterictic of describing, and does not repeat them here.
Claims (2)
1. a hydraulic press master cylinder epicoele safety system, it is characterized in that: comprise the 3rd inserted valve (C3), the 4th inserted valve (C4) and the 5th inserted valve (C5), the entrance of the 5th inserted valve (C5) is connected with the entrance (P1) of epicoele security module (CF2), the outlet of the 5th inserted valve (C5) is connected with the outlet of epicoele security module (CF2) by the inside exit passageway of epicoele security module (CF2), this inside exit passageway is also provided with two bypass ducts, described in two, bypass duct is connected with the entrance of described the 3rd inserted valve (C3) and the 4th inserted valve (C4) respectively, described the 3rd inserted valve (C3) is connected with fuel tank respectively with the outlet of the 4th inserted valve (C4).
2. hydraulic press master cylinder epicoele safety system according to claim 1, it is special, and the inside exit passageway of described epicoele security module (CF2) is connected with the hydraulic control mouth of the 3rd inserted valve (C3) and the 4th inserted valve (C4) with the 4th solenoid directional control valve (YV4) by the 3rd solenoid directional control valve (YV3) respectively; On the entrance pipe of the 3rd inserted valve (C3) and the 4th inserted valve (C4), be respectively equipped with pressure sensor interface and be separately installed with the 3rd pressure sensor (E3) and the 4th pressure sensor (E4), the signal of the 3rd pressure sensor (E3) and the 4th pressure sensor (E4) offers respectively the 3rd solenoid directional control valve (YV3) and the 4th solenoid directional control valve (YV4); The import at shuttle valve (D5) two ends is connected with the import and export of the 5th inserted valve (C5) respectively, and the centre exit of shuttle valve (D5) is connected with the hydraulic control mouth of the 5th inserted valve (C5) by the 5th solenoid directional control valve (YV5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688012.9U CN203623017U (en) | 2013-11-04 | 2013-11-04 | Hydraulic machine main cylinder upper cavity safety protecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688012.9U CN203623017U (en) | 2013-11-04 | 2013-11-04 | Hydraulic machine main cylinder upper cavity safety protecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203623017U true CN203623017U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320688012.9U Expired - Fee Related CN203623017U (en) | 2013-11-04 | 2013-11-04 | Hydraulic machine main cylinder upper cavity safety protecting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203623017U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799213A (en) * | 2018-07-27 | 2018-11-13 | 佛山市恒力泰机械有限公司 | A kind of security system and method for refractory brick automatic hydraulic press |
| CN111550459A (en) * | 2020-05-20 | 2020-08-18 | 宁波华美达机械制造有限公司 | Safety protection oil circuit system of servo pump |
-
2013
- 2013-11-04 CN CN201320688012.9U patent/CN203623017U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799213A (en) * | 2018-07-27 | 2018-11-13 | 佛山市恒力泰机械有限公司 | A kind of security system and method for refractory brick automatic hydraulic press |
| CN108799213B (en) * | 2018-07-27 | 2023-11-28 | 佛山市恒力泰机械有限公司 | Safety system and method of automatic hydraulic press for refractory bricks |
| CN111550459A (en) * | 2020-05-20 | 2020-08-18 | 宁波华美达机械制造有限公司 | Safety protection oil circuit system of servo pump |
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| 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: 20140604 Termination date: 20211104 |