CN203579138U - Press-fitting equipment hydraulic system - Google Patents
Press-fitting equipment hydraulic system Download PDFInfo
- Publication number
- CN203579138U CN203579138U CN201320745067.9U CN201320745067U CN203579138U CN 203579138 U CN203579138 U CN 203579138U CN 201320745067 U CN201320745067 U CN 201320745067U CN 203579138 U CN203579138 U CN 203579138U
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- press
- valve
- fitting
- loop
- branch road
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Abstract
The utility model discloses a press-fitting equipment hydraulic system. The press-fitting equipment hydraulic system comprises a press-fitting loop, a supporting loop and a pumping source, and the press-fitting loop and the supporting loop are connected between an oil outlet branch and an oil return branch of the pumping source. According to the press-fitting equipment hydraulic system, a constant-pressure variable-displacement piston pump is adopted as the pumping source, the swashplate angle of the constant-pressure variable-displacement piston pump can be changed automatically to make the flow rate be zero once the pressure of the whole hydraulic system reaches the pressure needed by operation, and therefore overflow loss is avoided; the press-fitting loop is provided with solenoid throttle valves in an overlaid mode, and when a press-fitting solenoid directional valve is powered on and the press-fitting solenoid throttle valve is powered on, the descending speed of a press-fitting cylinder is regulated through the two one-way solenoid throttle valves; when the press-fitting solenoid directional valve is powered off, the press-fitting speed of the press-fitting cylinder is regulated through the press-fitting solenoid throttle valve. The descending speed and the press-fitting speed of press-fitting equipment in the prior art are equal, while according to the technical scheme of the press-fitting equipment hydraulic system, the descending speed and the press-fitting speed are respectively set and regulated.
Description
Technical field
The utility model belongs to hydraulic test technical field, is a kind of press-loading device hydraulic system.
Background technology
The press-loading device hydraulic system of using on domestic automobile assembly line at present can only arrange a kind of speed that press-fits in press-fiting process, and Speed Setting can produce very large impact to press-fiting product too soon, and Speed Setting is crossed the production efficiency that will reduce slowly whole production line.In addition, the pressurize of the shoring in hydraulic system generally adopt hydraulic control one-way valve or electromagnet long charged, hydraulic control one-way valve has leakage pressurize for a long time, the long charged easy heating of electromagnet and not energy-conservation.
Summary of the invention
Problem to be solved in the utility model is: provide a kind of simple in structure, press-fiting speed can regulate by secondary, the hydraulic system of shoring pressure stability.
The technical solution of the utility model is: a kind of press-loading device hydraulic system, comprise press-fiting loop, supporting loop and pumping source, and press-fit loop and support loop and be connected between the fuel-displaced branch road and oil return branch road of pumping source, wherein
Pumping source comprises fuel tank, constant pressure variable plunger pump and motor, and fuel-displaced branch road is connected fuel tank with oil return branch road, and constant pressure variable plunger pump is arranged on fuel-displaced branch road, and motor drives constant pressure variable plunger pump;
Support loop and comprise shoring, bag type accumulator, support solenoid directional control valve and support hydraulic control one-way valve, the fluid of fuel-displaced branch road flows into bag type accumulator and shoring through supporting solenoid directional control valve, and shoring connects oil return branch road through supporting hydraulic control one-way valve;
Press-fiting loop comprises and press-fits cylinder, press-fits solenoid directional control valve, two unidirectional electromagnetic throttle valve, press-fits electromagnetic throttle valve and hydraulic control one-way valve, the fluid of fuel-displaced branch road through press-fiting solenoid directional control valve, hydraulic control one-way valve, press-fit electromagnetic throttle valve, two unidirectional electromagnetic throttle valve flows into and press-fits cylinder epicoele, press-fit cylinder cavity of resorption fluid through two unidirectional electromagnetic throttle valves and press-fit electromagnetic throttle valve and flow back to fuel tank by oil return branch road.
The fuel tank of pumping source is provided with liquid level relay, liquid level thermometer and air filter, on fuel-displaced branch road, set gradually oil absorption filter, constant pressure variable plunger pump, fuel-displaced Pressure gauge, oil circuit overflow valve, oil circuit solenoid directional control valve and oil circuit check valve, oil return branch road is provided with return filter and Air cooler.
Support in loop, before support solenoid directional control valve, be provided with and support pressure-reducing valve and abutment pressure table, between shoring and support hydraulic control one-way valve, be provided with and support overflow valve and abutment pressure relay.Described support overflow valve is Superimposed relief valve structure.
Press-fit in loop, press-fit before solenoid directional control valve and be provided with and press-fit pressure-reducing valve and press-fit Pressure gauge.
In the utility model, pumping source adopts constant pressure variable plunger pump, once whole hydraulic system pressure reaches the pressure of need of work, constant pressure variable plunger pump can change swashplate angle automatically, and flow vanishing, has so just avoided spill losses.
In order to realize, to press-fit cylinder descending fast, and low speed press-fits.Press-fit the loop electromagnetic throttle valve that superposeed, charged when press-fiting solenoid directional control valve, press-fit electromagnetic throttle valve charged, press-fit cylinder and press-fit cylinder downstream rate by two unidirectional electromagnetism throttle valve adjustment; In order to raise the efficiency, descending fast while press-fiting, then low speed press-fits, and when press-fiting electromagnetic throttle valve dead electricity, press-fits cylinder and press-fits speed by press-fiting electromagnetic throttle valve adjusting.
Press-loading device of the prior art, downstream rate and to press-fit speed be a speed, corresponding Production requirement is controlled respectively, and the utility model scheme is downstream rate and press-fit speed and carried out arranging respectively, regulates.
In order to guarantee in press-fiting process, shoring keeps constant support force in addition, and the utility model adopts bag type accumulator and supports hydraulic control one-way valve and carry out pressurize, and arranges and support overflow valve and carry out pressure protect, prevents supporting circuit pressure too high.
Accompanying drawing explanation
Fig. 1 is the utility model hydraulic system structure schematic diagram.
Fig. 2 is parts action sequence diagram in the utility model.
Fig. 3 is the structural representation that the utility model supports overflow valve.
The specific embodiment
As shown in Figure 1, the utility model comprises and press-fits loop 300, supports loop 200 and pumping source 100, press-fits loop 300 and support loop 200 to be connected between the fuel-displaced branch road and oil return branch road of pumping source 100, wherein
Supporting loop 200 comprises shoring, bag type accumulator 15, supports solenoid directional control valve 19.1 and supports hydraulic control one-way valve 18, the fluid of fuel-displaced branch road flows into bag type accumulator 15 and shoring through supporting solenoid directional control valve 19.1, and shoring connects oil return branch road through supporting hydraulic control one-way valve 18; Further, before support solenoid directional control valve 19.1, be provided with and support pressure-reducing valve 17.1 and abutment pressure table 11.2, between shoring and support hydraulic control one-way valve 18, be provided with and support overflow valve 20 and abutment pressure relay 16.Pressure oil enters support solenoid directional control valve 19.1 through supporting pressure-reducing valve 17.1, support 19.1 right electromagnet Y2 of solenoid directional control valve charged, pressure oil is by supporting the right position of solenoid directional control valve 19.1 to bag type accumulator 15 topping ups, and enters shoring cavity of resorption, produces support force.Now support 19.1 right electromagnet Y2 dead electricity of solenoid directional control valve, support 19.1 times metas of solenoid directional control valve, shoring relies on support hydraulic control one-way valve 18 and 15 pairs of shorings of bag type accumulator to carry out pressurize, 16 pairs of abutment pressures of abutment pressure relay are monitored in real time, support overflow valve 20 and prevent shoring hypertonia.Press-fit 19.1 left electromagnet Y3 of rear support solenoid directional control valve charged, support 19.1 left conductings of solenoid directional control valve, pressure oil is opened supporting hydraulic control one-way valve 18 through oil circuit, supports loop pressure release.
Press-fiting loop 300 comprises and press-fits cylinder, press-fits solenoid directional control valve 19.2, two unidirectional electromagnetic throttle valve 21, press-fits electromagnetic throttle valve 22 and hydraulic control one-way valve 23, the fluid of fuel-displaced branch road through press-fiting solenoid directional control valve 19.2, hydraulic control one-way valve 23, press-fit electromagnetic throttle valve 22, two unidirectional electromagnetic throttle valve 21 flows into and press-fits cylinder epicoele, press-fit cylinder cavity of resorption fluid through two unidirectional electromagnetic throttle valves 21 and press-fit electromagnetic throttle valve 22 and flow back to fuel tank 1 by oil return branch road, press-fit before solenoid directional control valve 19.2 and be provided with and press-fit pressure-reducing valve 17.2 and press-fit Pressure gauge 11.3.During work, pressure oil enters and press-fits solenoid directional control valve 19.2 through press-fiting pressure-reducing valve 17.2, press-fit 19.2 left electromagnet Y5 of solenoid directional control valve charged, the left position of reversal valve, the electromagnet Y6 that press-fits electromagnetic throttle valve 22 is charged, press-fit the left position of electromagnetic throttle valve 22, pressure oil is through hydraulic control one-way valve 23, the unidirectional valve pocket of two unidirectional electromagnetic throttle valves 21, enter and press-fit cylinder epicoele, press-fit 19.2 right electromagnet Y4 of solenoid directional control valve charged, press-fit cylinder cavity of resorption fluid through two unidirectional electromagnetic throttle valves 21 throttling chambeies, press-fit electromagnetic throttle valve 22 through oil return branch road oil return case 1, press-fiting speed regulates by two unidirectional electromagnetic throttle valves 21.When press-fiting the electromagnet Y6 dead electricity of electromagnetic throttle valve 22, press-fiting cylinder cavity of resorption fluid not only will be through two unidirectional electromagnetic throttle valves 21 throttling chamber, also will be through press-fiting electromagnetic throttle valve 22 throttling chamber oil return casees, now press-fit speed, main pressured dress electromagnetic throttle valve 22 regulates, and concrete electromagnet sequence of movement table is referring to Fig. 2.Wherein Y1～Y6 represents the electromagnet that hydraulic valve is different, Y1 is the electromagnet of oil circuit solenoid directional control valve 13, Y2 is for supporting 19.1 right electromagnet of solenoid directional control valve, Y3 is for supporting 19.1 left electromagnet of solenoid directional control valve, Y4 is for press-fiting 19.2 right electromagnet of solenoid directional control valve, Y5 is for press-fiting 19.2 left electromagnet of solenoid directional control valve, and Y6 is the electromagnet that press-fits electromagnetic throttle valve 22.
The hydraulic oil process Air cooler 9 of last oil return branch road, return filter 8 oil return casees 1, return filter 8 has bypass circulation, and when filter core stops up, oil return can be passed through check valve oil return case.
The support overflow valve 20 that the utility model preferably supports loop is Superimposed relief valve structure, Superimposed relief valve is prior art, no longer describe in detail, its internal structure is fairly simple, it is the combination of carrying out with plug-in mounting overflow valve and safety valve piece according to actual condition, as shown in Figure 3, be the Superimposed relief valve structure that a kind of overflow valve 201 and overflow valve piece 202 form, this design makes the utility model more convenient when integral valve piece is installed.
Claims (5)
1. a press-loading device hydraulic system, it is characterized in that comprising and press-fit loop (300), support loop (200) and pumping source (100), press-fit loop (300) and support loop (200) and be connected between the fuel-displaced branch road and oil return branch road of pumping source (100), wherein
Pumping source (100) comprises fuel tank (1), constant pressure variable plunger pump (6) and motor (7), fuel-displaced branch road is connected fuel tank (1) with oil return branch road, constant pressure variable plunger pump (6) is arranged on fuel-displaced branch road, and motor (7) drives constant pressure variable plunger pump (6);
Supporting loop (200) comprises shoring, bag type accumulator (15), supports solenoid directional control valve (19.1) and supports hydraulic control one-way valve (18), the fluid of fuel-displaced branch road flows into bag type accumulator (15) and shoring through supporting solenoid directional control valve (19.1), and shoring connects oil return branch road through supporting hydraulic control one-way valve (18);
Press-fiting loop (300) comprises and press-fits cylinder, press-fit solenoid directional control valve (19.2), two unidirectional electromagnetic throttle valve (21), press-fits electromagnetic throttle valve (22) and hydraulic control one-way valve (23), the fluid of fuel-displaced branch road through press-fiting solenoid directional control valve (19.2), hydraulic control one-way valve (23), press-fit electromagnetic throttle valve (22), two unidirectional electromagnetic throttle valve (21) flows into and press-fits cylinder epicoele, press-fit cylinder cavity of resorption fluid through two unidirectional electromagnetic throttle valves (21) and press-fit electromagnetic throttle valve (22) and flow back to fuel tank (1) by oil return branch road.
2. a kind of press-loading device hydraulic system according to claim 1, the fuel tank that it is characterized in that pumping source (100) is provided with liquid level relay (2), liquid level thermometer (3) and air filter (5), on fuel-displaced branch road, set gradually oil absorption filter (4), constant pressure variable plunger pump (6), fuel-displaced Pressure gauge (11.1), oil circuit overflow valve (12), oil circuit solenoid directional control valve (13) and oil circuit check valve (14), oil return branch road is provided with return filter (8) and Air cooler (9).
3. a kind of press-loading device hydraulic system according to claim 1, it is characterized in that supporting in loop (200), support front being provided with of solenoid directional control valve (19.1) and support pressure-reducing valve (17.1) and abutment pressure table (11.2), between shoring and support hydraulic control one-way valve (18), be provided with and support overflow valve (20) and abutment pressure relay (16).
4. a kind of press-loading device hydraulic system according to claim 3, is characterized in that described support (20) is for Superimposed relief valve structure.
5. a kind of press-loading device hydraulic system according to claim 1, is characterized in that press-fiting in loop (300), press-fits front being provided with of solenoid directional control valve (19.2) and press-fits pressure-reducing valve (17.2) and press-fit Pressure gauge (11.3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745067.9U CN203579138U (en) | 2013-11-22 | 2013-11-22 | Press-fitting equipment hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320745067.9U CN203579138U (en) | 2013-11-22 | 2013-11-22 | Press-fitting equipment hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203579138U true CN203579138U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320745067.9U Withdrawn - After Issue CN203579138U (en) | 2013-11-22 | 2013-11-22 | Press-fitting equipment hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203579138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586675A (en) * | 2013-11-22 | 2014-02-19 | 南京埃尔法电液技术有限公司 | Hydraulic system of press fitting device |
-
2013
- 2013-11-22 CN CN201320745067.9U patent/CN203579138U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586675A (en) * | 2013-11-22 | 2014-02-19 | 南京埃尔法电液技术有限公司 | Hydraulic system of press fitting device |
| CN103586675B (en) * | 2013-11-22 | 2015-12-16 | 南京埃斯顿自动化股份有限公司 | A kind of press-loading device hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151019 Address after: 211100, No. 155, general road, Jiangning Development Zone, Nanjing, Jiangsu Patentee after: Nanjing Estun Automation Co., Ltd. Address before: 211102 No. 178 Yan Hu Road, Jiangning Development Zone, Jiangsu, Nanjing, China Patentee before: Aierfa Electrohydraulic Technology Co., Ltd., Nanjing City Patentee before: Nanjing Estun Automation Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20151216 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |