CN202545420U - Hydraulic loop for useful work measurement for continuous working stroke of crank press - Google Patents
Hydraulic loop for useful work measurement for continuous working stroke of crank press Download PDFInfo
- Publication number
- CN202545420U CN202545420U CN 201120428278 CN201120428278U CN202545420U CN 202545420 U CN202545420 U CN 202545420U CN 201120428278 CN201120428278 CN 201120428278 CN 201120428278 U CN201120428278 U CN 201120428278U CN 202545420 U CN202545420 U CN 202545420U
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- China
- Prior art keywords
- useful work
- valve
- crank press
- continuous operation
- hydraulic circuit
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- Expired - Lifetime
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Abstract
The utility model relates to a hydraulic loop for a useful work measurement for a continuous working stroke of a crank press, comprising a motor (3) and a pump (2), wherein a check valve I (5) is connected to the output end of the pump (2), an oil cylinder (13) for the useful work measurement, which is internally arranged with a displacement sensor (14), is connected to the output end of the check valve I (5), and an overflow valve II (9), an energy accumulator (10), an oil release valve (11) and a pressure sensor (12) are bypassed at the output end of the check valve I (5). The hydraulic loop disclosed by the utility model is used for adjusting the pressure of the oil cylinder via the overflow valve, so as to prevent the too high pressure of the hydraulic loop, realizing the normal operation of the oil path of the hydraulic loop via the coordination of the energy accumulator, the oil release valve and the oil cylinder for the useful work measurement, and detecting the associated data via the coordination of the pressure sensor and the displacement sensor, so as to realize calculation for useful work.
Description
Technical field
The utility model relates to a kind of crank press continuous operation stroke useful work and measures oil hydraulic circuit, belongs to the hydraulic system technical field.
Background technique
General crank press is used for technologies such as stamping-out, stretching, die forging and extruding; Different processes, workpiece deformation energy needed are also different, and workpiece deformation power changes in working stroke; Usually press machine is as design considerations with the load chart of sheet metal thickness stamping-out; But according to measured result, plate is fractured into 0.4 ~ 0.5 o'clock plate that drift gets into sheet thickness and has just ruptured, but the size of this numerical value changes with the size in the plasticity of plate and punch die gap.Normally our calculating pressure machine workpiece deformation merit is nominal pressure stroke useful work: W=0.315Pg.h0; Pg is the press machine nominal pressure in the formula; H0 is a sheet thickness; This is an empirical correlation, and the better way of neither one is come the more accurately device of measuring pressure machine continuous operation stroke useful work at present.
The model utility content
The utility model is to above-mentioned defective, and it is a kind of simple in structure that purpose is to provide, and easy-operating a kind of crank press continuous operation stroke useful work is measured oil hydraulic circuit.
The technological scheme of the utility model employing is for this reason: the utility model comprises motor (3), pump (2); Pump (2) output terminal connects one-way valve one (5), the useful work mensuration oil cylinder (13) of the output terminal connection inbuilt displacement sensor (14) of one-way valve one (5) and vent relief valve two (9), accumulator (10), fuel outlet valve (11), pressure transducer (12).
Said one-way valve one (5) and useful work are measured between the oil cylinder (13) and are established the one-way valve two (8) that is in relief valve two (9) front ends, vent relief valve one (6) and pressure gauge (7) between said one-way valve one (5), the one-way valve two (8).
Bypass vent valve (4) between said pump (2) and the one-way valve one (5).
Said pump (2) front end is established filter (1).
Said fuel outlet valve (11) is the bi-bit bi-pass Solenoid ball valve.
Said relief valve one (6), relief valve two (9) are pilot operated compound relief valve.
The utility model has the advantages that: the utility model prevents that through relief valve adjustment oil cylinder working-pressure oil hydraulic circuit pressure is excessive; The utility model is realized the normal operation of oil hydraulic circuit oil circuit through the cooperation of accumulator, fuel outlet valve and useful work mensuration oil cylinder simultaneously; And the utility model detects related data through the cooperation of pressure transducer, displacement transducer, realizes the calculating of useful work.
Description of drawings
Fig. 1 is the structural representation of the utility model.
1 is that to measure oil cylinder, 13 for pressure transducer, 12 for useful work for fuel outlet valve, 12 for accumulator, 11 for relief valve two, 10 for one-way valve two, 9 for pressure gauge, 8 for relief valve one, 7 for one-way valve one, 6 for outlet valve, 5 for hydraulic electric motor, 4 for gear pump, 3 be displacement transducer to filter, 2 among the figure.
Embodiment
The utility model adopts high-pressure low-flow quantitative gear pump 2 as power source; Be used for crank press continuous operation stroke useful work and measure hydraulic pressure installation; Gear pump 2 installation forms both can horizontally be installed, and also can vertically install, and all control valves of this oil hydraulic circuit all adopted screw-in cartridge valve; They are assembled on the same valve plate, and structure is very compact.The principle that the crank press continuous operation stroke useful work of the utility model is measured circuit apparatus for hydraulic is: hydraulic electric motor 3 energisings; High-pressure gear pump 2 work; Gear pump 2 is through the oil suction in the fuel tank of inlet port filters 1, and gear pump 2 outlets are divided into two-way: roadside automatic control pressure vent 4 air in the automatic discharge tube when system oil pressure is lower than 0.2MPa that stimulates the menstrual flow, reduce the noise of gear pump 2; Automatic control pressure vent 4 cuts out automatically when system oil pressure is higher than 0.2MPa, makes system oil pressure energy fast rise; Another road is through being further divided into two-way behind the one-way valve 1: the pressure of logical pilot operated compound relief valve one 6 adjust system in a roadside is shown by pressure gauge 7; Another road arrives one-way valve 28; Bypass overload relief valve 29 (setting maximum service pressure), accumulator 10 (be used for press ram when descending the bump oil cylinder descend; Absorb the high pressure oil of discharging in the oil cylinder), fuel outlet valve 11, electronic type digital display pressure transducer 12 (two kinds of functions are arranged: the one, show in-oil cylinder real-time pressure; The 2nd, through the actual pressure value of analog signal transmission) to PLC real time record position; Arrive useful work at last and measure oil cylinder 13 (in adorn built-in displacement transducer 13, be used for the nominal pressure stroke of accurate detected pressures machine).
1, measures the method for press machine continuous operation stroke useful work: the piston rod portion of clashing into oil cylinder with the press machine center of press ram; The setting of oil cylinder internal pressure is adjusted by relief valve 29; Detected by electronic type digital display pressure transducer 12 and to output to PLC, the built-in displacement transducers 14 that the nominal pressure stroke leans on useful work to detect in the oil cylinder 13 detect.
2, the computational methods of press machine continuous operation stroke useful work:
W=P.A.Sg
W----press machine continuous operation stroke useful work, unit: J (joule);
The detected oil cylinder internal pressure of P-----electronic type digital display pressure transducer, unit: Pa;
A-----oil cylinder piston area, unit:;
The nominal pressure stroke of the press machine that Sg----oil cylinder intrinsic displacement sensor goes out, unit: m.
Claims (1)
1. a crank press continuous operation stroke useful work is measured oil hydraulic circuit; It is characterized in that; Comprise motor (3), pump (2); Pump (2) output terminal connects one-way valve one (5), the useful work mensuration oil cylinder (13) of the output terminal connection inbuilt displacement sensor (14) of one-way valve one (5) and vent relief valve two (9), accumulator (10), fuel outlet valve (11), pressure transducer (12).
2, a kind of crank press continuous operation stroke useful work according to claim 1 is measured oil hydraulic circuit; It is characterized in that; Said one-way valve one (5) and useful work are measured between the oil cylinder (13) and are established the one-way valve two (8) that is in relief valve two (9) front ends, vent relief valve one (6) and pressure gauge (7) between said one-way valve one (5), the one-way valve two (8).
3, a kind of crank press continuous operation stroke useful work according to claim 1 is measured oil hydraulic circuit, it is characterized in that bypass vent valve (4) between said pump (2) and the one-way valve one (5).
4, a kind of crank press continuous operation stroke useful work according to claim 1 is measured oil hydraulic circuit, it is characterized in that pump (2) front end is established filter (1).
5, a kind of crank press continuous operation stroke useful work according to claim 1 is measured oil hydraulic circuit, it is characterized in that said fuel outlet valve (11) is the bi-bit bi-pass Solenoid ball valve.
6, a kind of crank press continuous operation stroke useful work according to claim 1 is measured oil hydraulic circuit, it is characterized in that said relief valve two (9) is a pilot operated compound relief valve.
7, a kind of crank press continuous operation stroke useful work according to claim 2 is measured oil hydraulic circuit, it is characterized in that said relief valve one (6) is a pilot operated compound relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120428278 CN202545420U (en) | 2011-11-02 | 2011-11-02 | Hydraulic loop for useful work measurement for continuous working stroke of crank press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120428278 CN202545420U (en) | 2011-11-02 | 2011-11-02 | Hydraulic loop for useful work measurement for continuous working stroke of crank press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202545420U true CN202545420U (en) | 2012-11-21 |
Family
ID=47166062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120428278 Expired - Lifetime CN202545420U (en) | 2011-11-02 | 2011-11-02 | Hydraulic loop for useful work measurement for continuous working stroke of crank press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202545420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104728582A (en) * | 2015-03-03 | 2015-06-24 | 江苏扬力集团有限公司 | Hydraulic lubrication synthetic system of closed type four-point mechanical press |
| CN105508327A (en) * | 2014-10-08 | 2016-04-20 | 罗伯特·博世有限公司 | A machine with a mechanical safety device for covering a structural device |
-
2011
- 2011-11-02 CN CN 201120428278 patent/CN202545420U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508327A (en) * | 2014-10-08 | 2016-04-20 | 罗伯特·博世有限公司 | A machine with a mechanical safety device for covering a structural device |
| CN105508327B (en) * | 2014-10-08 | 2018-11-30 | 罗伯特·博世有限公司 | Machine with the mechanical protective device for covering structure space |
| CN104728582A (en) * | 2015-03-03 | 2015-06-24 | 江苏扬力集团有限公司 | Hydraulic lubrication synthetic system of closed type four-point mechanical press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |