CN2116114U - Closed oil-way hydraulic control device - Google Patents
Closed oil-way hydraulic control device Download PDFInfo
- Publication number
- CN2116114U CN2116114U CN 92212432 CN92212432U CN2116114U CN 2116114 U CN2116114 U CN 2116114U CN 92212432 CN92212432 CN 92212432 CN 92212432 U CN92212432 U CN 92212432U CN 2116114 U CN2116114 U CN 2116114U
- Authority
- CN
- China
- Prior art keywords
- oil circuit
- mouth
- hydraulic control
- hydraulic
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 238000009825 accumulation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 11
- 230000035939 shock Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
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- Control Of Positive-Displacement Pumps (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
Closed oil circuit hydraulic control device relates to the hydraulic pressure technique for control the closed oil circuit working process of high-pressure plunger pump two-way variable in the concrete pump, the utility model discloses a hydraulic control device [2], solenoid directional valve [12], servo cylinder [13], check valve device [3] etc. that will constitute by B type hydraulic pressure half-bridge constitute the hydraulic control oil circuit together to control oil pump switching-over process initiative feedback low pressure, make the control oil circuit simple, reliable, the switching-over process response is fast, the switching-over is steady, no impact, can not produce and inhale sky, hydraulic shock, overflow phenomenon of generating heat, thereby make oil circuit reliable operation, efficient, the energy consumption is low.
Description
The closed oil circuit hydraulic control unit relates to hydraulics, is used for concrete pump the closed oil circuit working procedure of high-pressure plunger pump bidirectional variable is controlled.
The closed oil circuit of existing high-pressure plunger pump bidirectional variable, its hydraulic control device are comparatively complicated, and the commutation speed of response is slower, can not avoid suction sky, hydraulic shock and overflow heating phenomenon in the oil pump commutation process.
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of closed oil circuit hydraulic control unit is provided.
Feature of the present utility model is: a of the solenoid directional control valve of 3-position 4-way (12), b mouth are connected with the two ends of servocylinder (13) respectively.Hydraulic control unit (2) is made up of the Type B half-bridge, its P, P
1Mouth is communicated with the pressure oil circuit of suction booster (11), solenoid directional control valve (12) respectively.One-way valve (31) in the check valve apparatus (3), two ends of (32) respectively with the X of servocylinder (13)
1, X
3Mouth and X
2, X
4Mouth connects.The O of unloading valve (41) in the accumulation of energy oil circuit control gear (4)
4Mouth is communicated with the A of bidirectional variable high-pressure plunger pump (1) with the pressure oil circuit G mouth of suction booster (11)
1, B
1Mouth respectively with a of oil circuit Rinsing unit (5)
5, b
5Mouth is communicated with.
Accompanying drawing is a hydraulic system principle figure of the present utility model.
Now in conjunction with the accompanying drawings working procedure of the present utility model is described below:
Solenoid directional control valve (12) energising, closed oil circuit is started working, hydraulic pressure in hydraulic control unit (2) the regulation and control servocylinders (13), thus the inclination angle of swash plate (14) changes in the control bidirectional variable high-pressure plunger pump (1), reaches the purpose of control bidirectional variable high-pressure plunger pump (1) output flow.Bidirectional variable high-pressure plunger pump (1) is when commutation process begins, and electro-hydraulic reversing valve (43) commutation in the accumulation of energy oil circuit control gear (4) makes accumulator (42) discharge the O of unloading valve (41)
4Mouthful close, flow sharply descends in the pressure oil circuit of suction booster (11) thereby make, and forms low pressure in short-term; This low pressure feeds back to servocylinder (13) rapidly through hydraulic control unit (2), solenoid directional control valve (12) and check valve apparatus (3), forms the low voltage control in short-term to servocylinder (13); Meanwhile, solenoid directional control valve (12) commutation, thus servocylinder (13) is commutated under low voltage control, commutation is rapid, steady, nothing is impacted.Then, at distributing valve oil cylinder (6) execution, accumulator (42) once more after the pressurising, the O of unloading valve (41)
4Mouth is opened once more, and flow and pressure in suction booster (11) the pressure oil circuit rise to normally once more, thereby finish the commutation process of bidirectional variable high-pressure plunger pump (1).Oil circuit Rinsing unit (5) can be changed the A of bidirectional variable high-pressure plunger pump (1) of flowing through, the oil of B mouth automatically.
The hydraulic control unit (2) that the utility model will be made up of the Type B half-bridge, solenoid directional control valve (12), servocylinder (13), check valve apparatus (3) etc. are formed the hydraulic control oil circuit together, and to the commutation process active feedback low pressure of servocylinder (13), make it under low voltage control, finish commutation, the hydraulic control oil circuit is simple, the commutation process speed of response is fast, commutation is steady, nothing is impacted, can not produce and inhale empty, hydraulic shock and overflow heating phenomenon, make closed oil circuit reliable performance, efficient height, energy consumption low.
Claims (1)
1, closed oil circuit hydraulic control unit comprises band suction booster [11], solenoid directional control valve [12], bidirectional variable high-pressure plunger pump [1], hydraulic control unit [2], check valve apparatus [3], accumulation of energy oil circuit control gear [4], oil circuit Rinsing unit [5], it is characterized in that:
1. a of the solenoid directional control valve of 3-position 4-way [12], b mouth are connected with the two ends of servocylinder [13] respectively;
2. hydraulic control unit [2] is made up of the Type B half-bridge, its P, P
1Mouth is communicated with the pressure oil circuit of suction booster [11], solenoid directional control valve [12] respectively;
3. two ends of the one-way valve [31] in the check valve apparatus [3], [32] respectively with the X of servocylinder [13]
1, X
3Mouth and X
2, X
4Mouth connects;
4. the O of unloading valve [41] in the accumulation of energy oil circuit control gear [4]
4Mouth is communicated with the A of bidirectional variable high-pressure plunger pump [1] with the pressure oil circuit G mouth of suction booster [11]
1, B
1Mouth respectively with a of oil circuit Rinsing unit [5]
5, b
5Mouth is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92212432 CN2116114U (en) | 1992-03-21 | 1992-03-21 | Closed oil-way hydraulic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92212432 CN2116114U (en) | 1992-03-21 | 1992-03-21 | Closed oil-way hydraulic control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2116114U true CN2116114U (en) | 1992-09-16 |
Family
ID=4957320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92212432 Granted CN2116114U (en) | 1992-03-21 | 1992-03-21 | Closed oil-way hydraulic control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2116114U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971068B (en) * | 2005-10-28 | 2010-07-21 | 贺尔碧格自动化技术控股有限公司 | Hydraulic pressure supply unit and electro-hydraulic work unit |
| CN101614228B (en) * | 2008-06-27 | 2012-01-04 | 扬州威奥重工机械有限公司 | Hydraulic controlling system for mining concrete pump |
| CN103089757A (en) * | 2013-01-29 | 2013-05-08 | 三一重工股份有限公司 | Closed hydraulic loop hot oil displacement system and concrete pumping device |
-
1992
- 1992-03-21 CN CN 92212432 patent/CN2116114U/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971068B (en) * | 2005-10-28 | 2010-07-21 | 贺尔碧格自动化技术控股有限公司 | Hydraulic pressure supply unit and electro-hydraulic work unit |
| CN101614228B (en) * | 2008-06-27 | 2012-01-04 | 扬州威奥重工机械有限公司 | Hydraulic controlling system for mining concrete pump |
| CN103089757A (en) * | 2013-01-29 | 2013-05-08 | 三一重工股份有限公司 | Closed hydraulic loop hot oil displacement system and concrete pumping device |
| CN103089757B (en) * | 2013-01-29 | 2015-03-18 | 三一汽车制造有限公司 | Closed hydraulic loop hot oil displacement system and concrete pumping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |