CN203048520U - Hydraulic circuit of working arm retractor device of overhead working truck - Google Patents
Hydraulic circuit of working arm retractor device of overhead working truck Download PDFInfo
- Publication number
- CN203048520U CN203048520U CN 201220576225 CN201220576225U CN203048520U CN 203048520 U CN203048520 U CN 203048520U CN 201220576225 CN201220576225 CN 201220576225 CN 201220576225 U CN201220576225 U CN 201220576225U CN 203048520 U CN203048520 U CN 203048520U
- Authority
- CN
- China
- Prior art keywords
- control valve
- directional control
- solenoid directional
- communicated
- hydraulic cylinder
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a hydraulic circuit of a working arm retractor device of an overhead working truck. The hydraulic circuit comprises a proportional flow valve and a differential induction valve which are arranged on an oil inlet pipeline in series, wherein the outlet of the differential induction valve is communicated with the port P of a magnetic exchange valve, the port R of the magnetic exchange valve is communicated with the rodless cavity of a retractable hydraulic cylinder, the rod-containing cavity of the retractable hydraulic cylinder is communicated with two ports W of the magnetic exchange valve, two balance valves are arranged on a pipeline between the rodless cavity of the retractable hydraulic cylinder and the rod-containing cavity of the retractable hydraulic cylinder in parallel, two ports S of the magnetic exchange valve are communicated with the port P of the magnetic exchange valve, two ports T of the magnetic exchange valve are communicated with the port R of the magnetic exchange valve, and the port Q of the magnetic exchange valve is connected with an oil return pipeline. The hydraulic circuit has the following characteristics of stability and reliability in operation, long service life, obvious energy-saving effect, reasonable design, simple structure, high automation degree and high working efficiency.
Description
Technical field
The utility model belongs to technical field of engineering machinery, relates to a kind of hydraulic circuit, is specifically related to a kind of aerial platform work jibs retractor device hydraulic circuit.
Background technology
Aerial platform is the advanced special-purpose special aloft work machinery that a kind of air position that staff, power tool etc. are transported to appointment by job platform carries out operations such as installation, maintenance.Aerial platform is a kind of special-use vehicle, belongs to construction machinery and equipment again simultaneously, is a kind of very important high-altitude preparation of construction.At present, domestic is the folding arm of the many employings of work jibs of aerial platform, and folding arm volume is big and heavy, is difficult to adapt to the job requirements in some narrow relatively places in the city.Reach same height, telescopic boom can be realized job requirements under the drive of its hydraulic circuit, can dwindle own vol greatly again.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, provides a kind of aerial platform work jibs retractor device hydraulic circuit, its stable and reliable operation, long service life, energy-saving effect is remarkable, and is reasonable in design, simple in structure, degree of automation height, high efficiency.
For achieving the above object, the technical solution adopted in the utility model 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 the 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 the 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 have been arranged in parallel on the pipeline of described telescopic hydraulic cylinder rodless cavity and described telescopic hydraulic cylinder rod chamber, 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, and 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: described solenoid directional control valve one R mouth pipeline is provided with accumulator.
Above-mentioned aerial platform work jibs retractor device hydraulic circuit, it is characterized in that: described solenoid directional control valve one and described solenoid directional control valve two are the two-bit triplet solenoid directional control valve.
The utility model 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 keep system pressure for a long time, and energy-saving effect is remarkable.
(3) this aerial platform work jibs retractor device Hydraulic Circuit Design is reasonable, when finishing required action, makes the structure of telescopic boom more simple, and volume is littler, and weight is lighter.
(4) this aerial platform work jibs retractor device hydraulic circuit degree of automation height, high efficiency.
Below by drawings and Examples, the utility model is described in further detail.
Description of drawings
Fig. 1 is hydraulic control principle schematic of the present utility model.
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-two 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 the 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 have been arranged in parallel on the pipeline of described telescopic hydraulic cylinder 7 rodless cavities and described telescopic hydraulic cylinder 7 rod chambers, 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, and the Q mouth of described solenoid directional control valve 1 connects oil return line.
As shown in Figure 1, the R mouth pipeline of described solenoid directional control valve 1 is provided with accumulator 4.
As shown in Figure 1, described solenoid directional control valve 1 and described solenoid directional control valve 25 are the two-bit triplet solenoid directional control valve.
The working process of the utility model aerial platform work jibs retractor device hydraulic circuit is:
In the time will realizing the action that work jibs is stretched out, solenoid directional control valve one 3 energisings are in position, a left side, solenoid directional control valve 25 outages are in right position, hydraulic oil passes through the position, a left side of solenoid directional control valve 1 and the rodless cavity of two balance cocks 6 inflow telescopic hydraulic cylinders 7, the hydraulic oil of telescopic hydraulic cylinder 7 rod chambers is gone into telescopic hydraulic cylinder 7 rodless cavities by the right bit stream of solenoid directional control valve 25 simultaneously, increase the flow that flows into telescopic hydraulic cylinder 7 rodless cavity hydraulic oil, realized differential connection.In the time will realizing the withdrawal action of work jibs, solenoid directional control valve one 3 outages are in right position, solenoid directional control valve 25 energisings are in position, a left side, hydraulic oil flows into telescopic hydraulic cylinder 7 rod chambers by position, a left side 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.Energy storage 4 produces back pressure in the hydraulic circuit, plays buffer action.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; every according to the utility model technical spirit to any simple modification, change and equivalent structure transformation that above embodiment does, all still belong in the protection domain of technical solutions of the utility model.
Claims (3)
1. 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 the 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 solenoid directional control valve two (5) W mouths, two balance cocks (6) have been arranged in parallel on the pipeline of described telescopic hydraulic cylinder (7) rodless cavity and described telescopic hydraulic cylinder (7) rod chamber, 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, and described solenoid directional control valve one (3) Q mouth connects oil return line.
2. according to the described aerial platform work jibs of claim 1 retractor device hydraulic circuit, it is characterized in that: described solenoid directional control valve one (3) R mouth pipeline is provided with accumulator (4).
3. according to the described aerial platform work jibs of claim 1 retractor device hydraulic circuit, it is characterized in that: described solenoid directional control valve one (3) and described solenoid directional control valve two (5) are the two-bit triplet solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220576225 CN203048520U (en) | 2012-11-04 | 2012-11-04 | Hydraulic circuit of working arm retractor device of overhead working truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220576225 CN203048520U (en) | 2012-11-04 | 2012-11-04 | Hydraulic circuit of working arm retractor device of overhead working truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203048520U true CN203048520U (en) | 2013-07-10 |
Family
ID=48731499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220576225 Expired - Fee Related CN203048520U (en) | 2012-11-04 | 2012-11-04 | Hydraulic circuit of working arm retractor device of overhead working truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203048520U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387012A (en) * | 2015-11-04 | 2016-03-09 | 徐州工业职业技术学院 | Control valve block for balance valve |
-
2012
- 2012-11-04 CN CN 201220576225 patent/CN203048520U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387012A (en) * | 2015-11-04 | 2016-03-09 | 徐州工业职业技术学院 | Control valve block for balance valve |
| CN105387012B (en) * | 2015-11-04 | 2017-05-03 | 徐州工业职业技术学院 | Control valve block for balance valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206035914U (en) | Four jar synchronous hydraulic system of automobile elevator | |
| CN201580012U (en) | Hydraulic control system for hydraulic press | |
| CN203222299U (en) | Hydraulic tensioning device of belt conveyor | |
| CN102562686A (en) | Hydraulic system for double-acting supercharger | |
| CN205013408U (en) | Differential hydraulic control device is entirely cut to steel scrap | |
| CN202988660U (en) | Variation amplitude and rotary hydraulic circuit for operation arm of high-altitude operation car | |
| CN203548390U (en) | Hydraulic pumping system and concrete pumping equipment | |
| CN202988661U (en) | Hydraulic circuit for high-altitude operation car leveling device | |
| CN103787243A (en) | Hydraulic circuit for aerial work vehicle operating arm telescoping devices | |
| CN203048520U (en) | Hydraulic circuit of working arm retractor device of overhead working truck | |
| CN102616700B (en) | Oil and air hybrid driven lifting control device | |
| CN206329561U (en) | mine hydraulic bracket control system | |
| CN102536924A (en) | Single-hydraulic cylinder single-acting hydraulic system of supercharger | |
| CN205277983U (en) | Differential pneumatic cylinder | |
| CN103849751A (en) | Crankshaft induction quenching machine tool hydraulic system | |
| CN203558742U (en) | Remote hydraulic control system for ship crane | |
| CN203214470U (en) | Hydraulic manifold lifting control valve bank for hopper of heavy truck | |
| CN105605000A (en) | Hydraulic drive circuit for adjusting telescopic arm of aerial work platform | |
| CN105605020A (en) | Hydraulic drive circuit for leveling aerial work platform | |
| CN203362682U (en) | Differential oil supplementing hydraulic control device of electro-hydraulic proportional cartridge valve | |
| CN203173770U (en) | Hydraulic loop of telescopic operating arm of high-altitude operation vehicle | |
| CN202251191U (en) | Integrated reversing control valve block of main oil circuit | |
| CN202767158U (en) | Hydraulic excavator flow out of valve regenerating device | |
| CN201989356U (en) | Hydraulic system of single-face machine | |
| CN206035949U (en) | Three jar synchronous hydraulic system of plate shearing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20131104 |