CN103787243A - Hydraulic circuit for aerial work vehicle operating arm telescoping devices - Google Patents
Hydraulic circuit for aerial work vehicle operating arm telescoping devices Download PDFInfo
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- CN103787243A CN103787243A CN201210435286.7A CN201210435286A CN103787243A CN 103787243 A CN103787243 A CN 103787243A CN 201210435286 A CN201210435286 A CN 201210435286A CN 103787243 A CN103787243 A CN 103787243A
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- control valve
- directional control
- solenoid directional
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- 239000010720 hydraulic oil Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a hydraulic circuit for aerial work vehicle operating arm telescoping devices. The hydraulic circuit comprises a proportional flow valve and a differential sensor valve serially connected to an oil incoming pipeline. An outlet of the differential sensor valve is communicated with a port P of a first electromagnetic reversing valve. A port R of the first electromagnetic reversing valve is communicated with a rodless cavity of a telescoping hydraulic cylinder. A rod cavity of the telescoping hydraulic cylinder is communicated with a port W of a second electromagnetic reversing valve. A double balance valve is parallelly disposed on the pipeline for the rodless cavity of the telescoping hydraulic cylinder and the rod cavity of the telescoping hydraulic cylinder. A port S of the second electromagnetic reversing valve is communicated with a port P of the first electromagnetic reversing valve. A port T of the second electromagnetic reversing valve is communicated with a port R of the first electromagnetic reversing valve. A port Q of the first electromagnetic reversing valve is communicated with a return oil pipeline. The hydraulic circuit has the advantages of operational stability and reliability, long service life, significant effect of energy saving, reasonable design, simple structure, high automation level and high operating 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 aerial platform work jibs retractor device hydraulic circuit.
Background technology
Aerial platform is a kind of staff, power tool etc. to be transported to the special special aloft work machinery of advanced person that the air position of appointment carries out the operations such as installation, maintenance by job platform.Aerial platform is a kind of special-use vehicle, belongs to again construction machinery and equipment simultaneously, is a kind of very important high-altitude preparation of construction.At present, domestic is that the work jibs of aerial platform adopts folding arm more, and folding arm volume is large and heavy, is difficult to adapt to the job requirements in some relatively narrow places in city.Reach same height, telescopic boom can be realized job requirements under the drive of its hydraulic circuit, can greatly dwindle again own vol.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, provide a kind of aerial platform work jibs retractor device hydraulic circuit, its stable and reliable operation, long service life, energy-saving effect is remarkable, reasonable in design, simple in structure, degree of automation is high, and work efficiency is high.
For achieving the above object, the technical solution used in the present invention is: a kind of aerial platform work jibs retractor device hydraulic circuit, it is characterized in that: comprise that series connection is arranged on proportional flow control valve and the difference Inductance valve on chargine line, described difference Inductance valve outlet is communicated with solenoid directional control valve one P mouth, described solenoid directional control valve one R mouth is communicated with telescopic hydraulic cylinder rodless cavity, described telescopic hydraulic cylinder rod chamber is communicated with described solenoid directional control valve two W mouths, two balance cocks on the pipeline of described telescopic hydraulic cylinder rodless cavity and described telescopic hydraulic cylinder rod chamber, are arranged in parallel, described solenoid directional control valve two S mouths are communicated with described solenoid directional control valve one P mouth, described solenoid directional control valve two T mouths are communicated with described solenoid directional control valve one R mouth, described solenoid directional control valve one Q mouth connects oil return line.
Above-mentioned aerial platform work jibs retractor device hydraulic circuit, is characterized in that: on described solenoid directional control valve one R mouth pipeline, be provided with accumulator.
Above-mentioned aerial platform work jibs retractor device hydraulic circuit, is characterized in that: described solenoid directional control valve one and described solenoid directional control valve two are two-bit triplet solenoid directional control valve.
The present invention compared with prior art has the following advantages:
(1) this aerial platform work jibs retractor device hydraulic circuit has two balance cocks, can make this system stability in operational process very high, long service life.
(2) this aerial platform work jibs retractor device hydraulic circuit has closed-center system, after Hydraulic Pump quits work, also can maintain for a long time system pressure, and energy-saving effect is remarkable.
(3) this aerial platform work jibs retractor device Hydraulic Circuit Design is reasonable, in completing required action, makes the structure of telescopic boom more simple, and volume is less, and weight is lighter.
(4) this aerial platform work jibs retractor device hydraulic circuit degree of automation is high, and work efficiency is high.
Below by drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is hydraulic control principle schematic of the present invention.
Description of reference numerals:
1-proportional flow control valve; 2-difference Inductance valve; 3-solenoid directional control valve one;
4-accumulator; 5-solenoid directional control valve two; 6-bis-balance cocks;
7-telescopic hydraulic cylinder.
The specific embodiment
A kind of aerial platform work jibs retractor device hydraulic circuit as shown in Figure 1, comprise that series connection is arranged on proportional flow control valve 1 and the difference Inductance valve 2 on chargine line, described difference Inductance valve 2 outlets are communicated with the P mouth of solenoid directional control valve 1, the R mouth of described solenoid directional control valve 1 is communicated with telescopic hydraulic cylinder 7 rodless cavities, described telescopic hydraulic cylinder 7 rod chambers are communicated with the W mouth of described solenoid directional control valve 25, two balance cocks 6 on the pipeline of described telescopic hydraulic cylinder 7 rodless cavities and described telescopic hydraulic cylinder 7 rod chambers, are arranged in parallel, the S mouth of described solenoid directional control valve 25 is communicated with the P mouth of described solenoid directional control valve 1, the T mouth of described solenoid directional control valve 25 is communicated with the R mouth of described solenoid directional control valve 1, the Q mouth of described solenoid directional control valve 1 connects oil return line.
As shown in Figure 1, on the R mouth pipeline of described solenoid directional control valve 1, be provided with accumulator 4.
As shown in Figure 1, described solenoid directional control valve 1 and described solenoid directional control valve 25 are two-bit triplet solenoid directional control valve.
The working process of aerial platform work jibs retractor device hydraulic circuit of the present invention is:
In the time will realizing the action that work jibs stretches out, solenoid directional control valve one 3 energisings are in left position, solenoid directional control valve 25 power-off are in right position, the left position of hydraulic oil by solenoid directional control valve 1 and two balance cocks 6 flow into the rodless cavity of telescopic hydraulic cylinder 7, the hydraulic oil of simultaneous retractable hydraulic actuating cylinder 7 rod chambers enters telescopic hydraulic cylinder 7 rodless cavities by the right bit stream of solenoid directional control valve 25, increase the flow that flows into telescopic hydraulic cylinder 7 rodless cavity hydraulic oil, realized differential connection.In the time will realizing the retract action of work jibs, solenoid directional control valve one 3 power-off are in right position, solenoid directional control valve 25 energisings are in left position, hydraulic oil flows into telescopic hydraulic cylinder 7 rod chambers by left position and two balance cock 6 of solenoid directional control valve 25, and the hydraulic oil of telescopic hydraulic cylinder 7 rodless cavities goes out by the right bit stream of solenoid directional control valve 1.In hydraulic circuit, energy storage 4 produces back pressure, plays buffer action.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification, change and equivalent structure transformation of above embodiment being done according to the technology of the present invention essence, all still belongs in the protection domain of technical solution of the present invention.
Claims (3)
1. an aerial platform work jibs retractor device hydraulic circuit, it is characterized in that: comprise that series connection is arranged on proportional flow control valve (1) and the difference Inductance valve (2) on chargine line, described difference Inductance valve (2) outlet is communicated with solenoid directional control valve one (3) P mouth, described solenoid directional control valve one (3) R mouth is communicated with telescopic hydraulic cylinder (7) rodless cavity, described telescopic hydraulic cylinder (7) rod chamber is communicated with described solenoid directional control valve two (5) W mouths, two balance cocks (6) on the pipeline of described telescopic hydraulic cylinder (7) rodless cavity and described telescopic hydraulic cylinder (7) rod chamber, are arranged in parallel, described solenoid directional control valve two (5) S mouths are communicated with described solenoid directional control valve one (3) P mouth, described solenoid directional control valve two (5) T mouths are communicated with described solenoid directional control valve one (3) R mouth, described solenoid directional control valve one (3) Q mouth connects oil return line.
2. according to aerial platform work jibs retractor device hydraulic circuit claimed in claim 1, it is characterized in that: on described solenoid directional control valve one (3) R mouth pipeline, be provided with accumulator (4).
3. according to aerial platform work jibs retractor device hydraulic circuit claimed in claim 1, it is characterized in that: described solenoid directional control valve one (3) and described solenoid directional control valve two (5) are two-bit triplet solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435286.7A CN103787243A (en) | 2012-11-04 | 2012-11-04 | Hydraulic circuit for aerial work vehicle operating arm telescoping devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435286.7A CN103787243A (en) | 2012-11-04 | 2012-11-04 | Hydraulic circuit for aerial work vehicle operating arm telescoping devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103787243A true CN103787243A (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210435286.7A Pending CN103787243A (en) | 2012-11-04 | 2012-11-04 | Hydraulic circuit for aerial work vehicle operating arm telescoping devices |
Country Status (1)
| Country | Link |
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| CN (1) | CN103787243A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041745A (en) * | 2015-06-29 | 2015-11-11 | 南阳二机石油装备(集团)有限公司 | Differential control system of double-acting single-stage piston hydraulic cylinder |
| CN105822615A (en) * | 2016-04-29 | 2016-08-03 | 泰富重工制造有限公司 | Hydraulic control system of engineering machinery amplitude change mechanism |
| CN112283961A (en) * | 2020-11-11 | 2021-01-29 | 上海电气液压气动有限公司 | Double-pump joint control solar photo-thermal tracking device |
-
2012
- 2012-11-04 CN CN201210435286.7A patent/CN103787243A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041745A (en) * | 2015-06-29 | 2015-11-11 | 南阳二机石油装备(集团)有限公司 | Differential control system of double-acting single-stage piston hydraulic cylinder |
| CN105822615A (en) * | 2016-04-29 | 2016-08-03 | 泰富重工制造有限公司 | Hydraulic control system of engineering machinery amplitude change mechanism |
| CN105822615B (en) * | 2016-04-29 | 2017-10-03 | 泰富重工制造有限公司 | The hydraulic control system of engineering machinery jib lubbing mechanism |
| CN112283961A (en) * | 2020-11-11 | 2021-01-29 | 上海电气液压气动有限公司 | Double-pump joint control solar photo-thermal tracking device |
| CN112283961B (en) * | 2020-11-11 | 2022-06-21 | 上海电气液压气动有限公司 | Double-pump joint control solar photo-thermal tracking device |
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| C06 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |