CN105605000A - Hydraulic drive circuit for adjusting telescopic arm of aerial work platform - Google Patents
Hydraulic drive circuit for adjusting telescopic arm of aerial work platform Download PDFInfo
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- CN105605000A CN105605000A CN201410686137.7A CN201410686137A CN105605000A CN 105605000 A CN105605000 A CN 105605000A CN 201410686137 A CN201410686137 A CN 201410686137A CN 105605000 A CN105605000 A CN 105605000A
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- control valve
- mouth
- opening
- solenoid directional
- directional control
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- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic drive circuit for adjusting a telescopic arm of an aerial work platform. The hydraulic drive circuit comprises a hydraulic cylinder, wherein a none rod chamber of the hydraulic cylinder is communicated with an L opening of a magnetic exchange valve I; an M opening and an N opening of the magnetic exchange valve I are respectively communicated with an oil returning opening and an oil outlet opening; a rod chamber of the hydraulic cylinder is communicated with a D opening of a magnetic exchange valve II; an E opening and an F opening of the magnetic exchange valve II are respectively communicated with the oil returning opening and the oil outlet opening; a flow control valve I is arranged on a pipeline between the none rod chamber of the hydraulic cylinder and the oil returning opening; an S opening and an R opening of a magnetic exchange valve III are respectively communicated with an A opening and a B opening of a hydraulic motor; a flow control valve II is arranged between a pipeline between a P opening of the magnetic exchange valve III and the oil returning opening. The hydraulic drive circuit disclosed by the invention has the characteristics of wide range of variable amplitude angel, stable and reliable operation, long service life, reasonable design, simple structure, high degree of automation, and high work efficiency.
Description
Technical field
The invention belongs to technical field of engineering machinery, relate to a kind of hydraulic circuit, be specifically related to a kind of forAdjust the hydraulic drive circuit of aerial work platform telescopic arm.
Background technology
Aerial work platform is that one is transported to finger by staff, power tool etc. by job platformFixed air position carries out the special special work high above the ground machinery of advanced person of the operations such as installation, maintenance. OrderBefore, domestic is that the work jibs of aerial work platform adopts folding arm more, folding arm volume is large and heavy,Be difficult to adapt to the job requirements in some relatively narrow places in city. Reach same height, flexibleArm can be realized job requirements under the drive of its luffing and revolution hydraulic circuit, can greatly dwindle again certainlyHealth is long-pending.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, provide a kind of work high above the ground flatPlatform telescopic arm adjustment hydraulic drive circuit, its change angle scope is large, and stable and reliable operation is usedLife-span is long, reasonable in design, simple in structure, and automaticity is high, and operating efficiency is high.
For achieving the above object, the technical solution used in the present invention is: a kind of aerial work platform is flexibleArm adjustment hydraulic drive circuit, comprises for driving telescopic arm luffing and rotating hydraulic cylinder and being instituteStating hydraulic cylinder provides the hydraulic motor of high pressure liquid force feed, it is characterized in that: also comprise by proportional flowValve and difference Inductance valve are connected in series the flow control valve one and the flow control valve two that form; Described hydraulic cylinderRodless cavity is communicated with the L mouth of solenoid directional control valve one, and the M mouth of described solenoid directional control valve one and N mouth are respectivelyBe communicated with oil return opening and oil-out, the rod chamber of described hydraulic cylinder is communicated with the D mouth of solenoid directional control valve two,The E mouth of described solenoid directional control valve two and F mouth are communicated with oil return opening and oil-out respectively, described hydraulic cylinderRodless cavity and oil return opening between pipeline on be provided with described flow control valve one; Described electromagnetic switchThe S mouth of valve three and R mouth are communicated with A mouth and the B mouth of described hydraulic motor respectively, described electromagnetic switchOn pipeline between P mouth and the oil return opening of valve three, be provided with described flow control valve two, described electromagnetism changesQ mouth to valve three is communicated with oil-out.
Above-mentioned aerial work platform telescopic arm adjustment hydraulic drive circuit, is characterized in that: described inHydraulic motor is circumscribed with brake, and described brake is by oil circuit control and the A that is connected in parallel on hydraulic motorShuttle valve between mouth and B mouth is communicated with.
Above-mentioned aerial work platform telescopic arm adjustment hydraulic drive circuit, is characterized in that: described inBetween the rod chamber of hydraulic cylinder and rodless cavity, be provided with two balanced valves one, the A mouth of described hydraulic motor andBetween B mouth, be provided with two balanced valves two.
Above-mentioned aerial work platform telescopic arm adjustment hydraulic drive circuit, is characterized in that: described inSolenoid directional control valve one and described solenoid directional control valve two are two position, three-way electromagnetic change valve, and described electromagnetism changesBe 3-position 4-way solenoid directional control valve to valve three.
Above-mentioned aerial work platform telescopic arm adjustment hydraulic drive circuit, is characterized in that: described inHydraulic cylinder is piston type double-acting hydraulic cylinder.
The present invention compared with prior art has the following advantages:
(1) this aerial work platform telescopic arm adjustment can make the luffing of telescopic arm by hydraulic drive circuitAngular range is large, can within the scope of-15 °-75 °, freely convert.
(2) this aerial work platform telescopic arm adjustment has two two balanced valves by hydraulic drive circuit,Can make system stability in running very high, service life large leap ahead.
(3) this aerial work platform telescopic arm adjustment is reasonable in design by hydraulic drive circuit, completesWhen required action, make the structure of telescopic arm more simple, volume is less, and weight is lighter.
(4) this aerial work platform telescopic arm adjustment is high by hydraulic drive circuit automaticity, workMake efficiency high.
Below by drawings and Examples, the present invention is described in further detail.
Brief description of the drawings
Fig. 1 is hydraulic control principle schematic of the present invention.
Description of reference numerals:
1-hydraulic cylinder; 2-solenoid directional control valve one; 3-solenoid directional control valve two;
4-flow control valve one; 5-flow control valve two; 6-solenoid directional control valve three;
7-shuttle valve; 8-brake; 9-bis-balanced valves one;
10-bis-balanced valves two; 11-hydraulic motor.
Detailed description of the invention
A kind of aerial work platform telescopic arm adjustment hydraulic drive circuit as shown in Figure 1, comprises useIn driving telescopic arm luffing and rotating hydraulic cylinder 1 and providing high pressure liquid force feed for described hydraulic cylinder 1Hydraulic motor 11, also comprises by proportional flow control valve and difference Inductance valve and is connected in series the flow control valve formingOne 4 and flow control valve 25; The L mouth of the rodless cavity of described hydraulic cylinder 1 and solenoid directional control valve 1Be communicated with, the M mouth of described solenoid directional control valve 1 and N mouth are communicated with oil return opening and oil-out respectively, instituteState the rod chamber of hydraulic cylinder 1 and the D mouth of solenoid directional control valve 23 is communicated with, described solenoid directional control valve 23E mouth and F mouth be communicated with oil return opening and oil-out respectively, the rodless cavity of described hydraulic cylinder 1 and oil returnOn pipeline between mouthful, be provided with described flow control valve 1; The S mouth of described solenoid directional control valve 36Be communicated with respectively described solenoid directional control valve 36 with A mouth and the B mouth of described hydraulic motor 11 with R mouthP mouth and oil return opening between pipeline on be provided with described flow control valve 25, described electromagnetic switchThe Q mouth of valve 36 is communicated with oil-out.
In the present embodiment, described hydraulic motor 11 is circumscribed with brake 8, and described brake 8 is by controlLiquefaction road is communicated with the shuttle valve 7 being connected in parallel between A mouth and the B mouth of hydraulic motor 11.
In the present embodiment, between the rod chamber of described hydraulic cylinder 1 and rodless cavity, be provided with two balanced valves one9, between the A mouth of described hydraulic motor 11 and B mouth, be provided with two balanced valves 2 10.
In the present embodiment, described solenoid directional control valve 1 and described solenoid directional control valve 23 are two threeElectric change valve, described solenoid directional control valve 36 is 3-position 4-way solenoid directional control valve.
In the present embodiment, described hydraulic cylinder 1 is piston type double-acting hydraulic cylinder.
The above, be only preferred embodiment of the present invention, not the present invention imposed any restrictions, allAny simple modification, change and the equivalence of above embodiment being done according to the technology of the present invention essenceStructural Transformation, all still belongs in the protection domain of technical solution of the present invention.
Claims (5)
1. an aerial work platform telescopic arm adjustment hydraulic drive circuit, comprises for driving flexibleArm luffing and rotating hydraulic cylinder (1) and provide the hydraulic pressure of high pressure liquid force feed for described hydraulic cylinder (1)Motor (11), is characterized in that: also comprise by proportional flow control valve and difference Inductance valve serial connection and formingFlow control valve one (4) and flow control valve two (5); The rodless cavity of described hydraulic cylinder (1)Be communicated with the M mouth of described solenoid directional control valve one (2) and N mouth with the L mouth of solenoid directional control valve one (2)Be communicated with respectively the rod chamber of described hydraulic cylinder (1) and solenoid directional control valve two with oil return opening and oil-out(3) D mouth is communicated with, the E mouth of described solenoid directional control valve two (3) and F mouth respectively with oil return opening andOil-out is communicated with, and on the pipeline between rodless cavity and the oil return opening of described hydraulic cylinder (1), arranges to some extentState flow control valve one (4); The S mouth of described solenoid directional control valve three (6) and R mouth are respectively with describedThe A mouth of hydraulic motor (11) and B mouth are communicated with, the P mouth of described solenoid directional control valve three (6) with returnOn pipeline between hydraulic fluid port, be provided with described flow control valve two (5), described solenoid directional control valve three (6)Q mouth be communicated with oil-out.
2. according to aerial work platform telescopic arm adjustment hydraulic drive circuit claimed in claim 1,It is characterized in that: described hydraulic motor (11) is circumscribed with brake (8) described brake (8)Connect by oil circuit control and the shuttle valve (7) that is connected in parallel between A mouth and the B mouth of hydraulic motor (11)Logical.
3. according to aerial work platform telescopic arm adjustment hydraulic drive circuit claimed in claim 1,It is characterized in that: between the rod chamber of described hydraulic cylinder (1) and rodless cavity, be provided with two balanced valves one(9), between the A mouth of described hydraulic motor (11) and B mouth, be provided with two balanced valves two (10).
4. according to aerial work platform telescopic arm adjustment hydraulic drive circuit claimed in claim 1,It is characterized in that: described solenoid directional control valve one (2) and described solenoid directional control valve two (3) are twoThree-way solenoid valve, described solenoid directional control valve three (6) is 3-position 4-way solenoid directional control valve.
5. return by hydraulic-driven according to the aerial work platform telescopic arm adjustment described in claim 1 or 3Road, is characterized in that: described hydraulic cylinder (1) is piston type double-acting hydraulic cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410686137.7A CN105605000A (en) | 2014-11-22 | 2014-11-22 | Hydraulic drive circuit for adjusting telescopic arm of aerial work platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410686137.7A CN105605000A (en) | 2014-11-22 | 2014-11-22 | Hydraulic drive circuit for adjusting telescopic arm of aerial work platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105605000A true CN105605000A (en) | 2016-05-25 |
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ID=55985226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410686137.7A Pending CN105605000A (en) | 2014-11-22 | 2014-11-22 | Hydraulic drive circuit for adjusting telescopic arm of aerial work platform |
Country Status (1)
| Country | Link |
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| CN (1) | CN105605000A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151148A (en) * | 2016-08-31 | 2016-11-23 | 徐州徐工随车起重机有限公司 | A kind of hydraulic control system of folding-jib high-altitude operation vehicle |
| CN109026885A (en) * | 2018-09-30 | 2018-12-18 | 中国船舶重工集团公司第七〇九研究所 | Double Acting Telescopic Hydraulic Cylinder balances valve group |
| CN116733798A (en) * | 2023-08-16 | 2023-09-12 | 湖南星邦智能装备股份有限公司 | Aerial working platform and floating control system thereof |
-
2014
- 2014-11-22 CN CN201410686137.7A patent/CN105605000A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151148A (en) * | 2016-08-31 | 2016-11-23 | 徐州徐工随车起重机有限公司 | A kind of hydraulic control system of folding-jib high-altitude operation vehicle |
| CN109026885A (en) * | 2018-09-30 | 2018-12-18 | 中国船舶重工集团公司第七〇九研究所 | Double Acting Telescopic Hydraulic Cylinder balances valve group |
| CN116733798A (en) * | 2023-08-16 | 2023-09-12 | 湖南星邦智能装备股份有限公司 | Aerial working platform and floating control system thereof |
| CN116733798B (en) * | 2023-08-16 | 2023-11-07 | 湖南星邦智能装备股份有限公司 | Aerial working platform and floating control system thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160525 |
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| WD01 | Invention patent application deemed withdrawn after publication |