CN101839260A - Step-down multipath reversing valve with two-position two-way hydraulic control valve - Google Patents
Step-down multipath reversing valve with two-position two-way hydraulic control valve Download PDFInfo
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- CN101839260A CN101839260A CN 201010134475 CN201010134475A CN101839260A CN 101839260 A CN101839260 A CN 101839260A CN 201010134475 CN201010134475 CN 201010134475 CN 201010134475 A CN201010134475 A CN 201010134475A CN 101839260 A CN101839260 A CN 101839260A
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- valve
- hydraulic control
- control valve
- way hydraulic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention relates to a step-down multipath reversing valve with a two-position two-way hydraulic control valve, comprising a maneuvering valve and the two-position two-way hydraulic control valve, wherein the two-position two-way hydraulic control valve is connected to a reversing valve plate of a fifth support leg of the maneuvering valve by bolts, and connecting oil ports (C and D) on the two-position two-way hydraulic control valve are respectively communicated with oil ducts (a2 and a3) on the maneuvering valve; the maneuvering valve comprises a valve body, and an overflow valve, a selection valve, an overload valve, a hydraulic-control one-way valve, 5 groups of reversing valves and 5 groups of one-way valves are sequentially arranged on the valve body; the two-position two-way hydraulic control valve comprises a valve body, and a two-position two-way hydraulic control valve core and a damping rod are arranged in the valve body. The invention has the advantages that: the step-down multipath reversing valve has circular control function on the retraction of five support legs as the two-position two-way hydraulic control valve is arranged, that is to say, the fifth support leg is retracted within the first time under any circumstances, therefore, the accident of frequent damage of the fifth support leg due to asynchronous operation is avoided generating, and the safety operation performance of a truck crane is greatly enhanced.
Description
Technical field
The present invention relates to a kind of valve, relate generally to the supporting leg action control valve that is used for truck system under the hydraulic hoist, promptly with the step-down multi-path reversing valve of two-position two-way hydraulic control valve.
Background technique
Along with domestic develop rapidly in manufacturing technology aspect the engineering mechanical devices such as hydraulic mobile crane, the large-tonnage hydraulic mobile crane is developed successively and is put goods on the market, can import substitutes, and in quantity and all advance by leaps and bounds qualitatively.In the market, five hydraulic pressure withstand leg on the hydraulic mobile crane of 20t and above tonnage, have all been adopted, increased by the 5th supporting leg load-bearing at headstock, under the situation that constantly alleviates relative deadweight and simplified structure and do not influence carrying capacity, the safety when guaranteeing lift heavy.That get off selector valve such as the Chinese patent ZL01244646.7 that adopts on the existing domestic hydraulic hoist discloses is a kind of " novel automobile crane get off hydraulic multitandem valve ", solve the truck crane supporting leg horizontal hydraulic pressure cylinder piston rod bending deflection problem of getting off, and reduced complete machine leakage of oil link.Chinese patent ZL200520049716.7 discloses a kind of " integral multi-way reversing valve ", provides that a kind of integrated type cast form oil duct, compact structure, processing are simple, low cost of manufacture, the pressure loss are little, have energy-saving and cost-reducing effect and the integral multi-way reversing valve that can prevent the auto-lock function that horizontal cylinder is stretched out voluntarily.Though the corresponding controller energy valve block that has increased by the 5th supporting leg of above-mentioned two kinds of inventions, but all there is a serious safety operation hidden danger, promptly ordered control is not implemented in the folding and unfolding of five supporting legs, when applying the family use, asynchronous operation behavior often appears, the 5th supporting leg is lagged behind pack up, independent weight bearing and be out of shape impairedly, even security incident takes place.
Summary of the invention
Technical problem solved by the invention is to overcome the above-mentioned problem of hydraulic multitandem valve to five unordered controls of withstand leg of getting off, provide a kind of folding and unfolding to be controlled in proper order to five supporting legs, when the user uses, asynchronous operation will not occur and make the 5th supporting leg independent weight bearing and be out of shape impairedly, can prevent the step-down multi-path reversing valve that security incident takes place.
The technological scheme that technical solution problem of the present invention is adopted is as follows: the step-down multi-path reversing valve of band two-position two-way hydraulic control valve, comprise a control valve and a two-position two-way hydraulic control valve, it is characterized in that: the two-position two-way hydraulic control valve is connected by bolt on the Reversing valve plate of the 5th supporting leg of control valve, and connection hydraulic fluid port C, the D on the two-position two-way hydraulic control valve is connected with oil duct a2, a3 on the control valve respectively.
Control valve comprises valve body, and valve body surface has outside hydraulic fluid port P, T, V, H, E, A and the B of connecting, and valve inner has cast form oil pocket and oil duct, and relief valve, selector valve, overload valve, Pilot operated check valve, 5 groups of selector valves, 5 groups of one-way valves are housed on it successively.
The two-position two-way hydraulic control valve comprises valve body, and valve body surface has outside hydraulic fluid port C, D, K, O and the inner machine of connecting to add shaping oil pocket and oil duct, and the valve body of two-position two-way hydraulic control valve is that machine adds shaping chip valve body, and two-position two-way hydraulic control spool and damper rod are housed in the valve body.
The invention has the advantages that:
The two-position two-way hydraulic control valve is set, make the hydraulic multitandem valve of getting off have the function of control in proper order to the folding and unfolding of five supporting legs, in any case promptly, the 5th supporting leg all is retracted in the very first time, avoided because of asynchronous operation, the impaired accident of the 5th supporting leg is taken place, greatly strengthened the safety operation performance of truck crane.
Description of drawings
Fig. 1 is an outline drawing of the present invention
Fig. 2 is the F-F sectional view of Fig. 1 of the present invention
Fig. 3 is the outline drawing of two-position two-way hydraulic control valve
Fig. 4 is a schematic diagram of the present invention
Among the figure: 1, control valve, 2, valve body, 3, relief valve, 4, selector valve, 5, overload valve, 6, Pilot operated check valve, 7, the two-position two-way hydraulic control valve, 8, valve body, 9, selector valve, 10, one-way valve, 11, screw plug, 12, damper rod, 13, O RunddichtringO, 14, bolt, 15, the two-position two-way hydraulic control spool, 16, spring seat, 17, spring, 18, sealing gasket, 19, spring seat, 20, changeover valve core, 21, changement.
Embodiment
Below in conjunction with accompanying drawing embodiment the present invention is made into one one detailed description:
In Fig. 1: the valve body 2 of control valve 1 adopts the design of integrated type casting oil duct, and relief valve 3, selector valve 4, overload valve 5,9,5 groups of one-way valves 10 of 6,5 groups of selector valves of Pilot operated check valve are housed on it successively; The valve body 8 of two-position two-way hydraulic control valve 7 is equipped with two-position two-way hydraulic control spool 15 and damper rod 12 for machine adds shaping chip valve body in the valve body 8, valve body 8 is connected on the valve body 2 by bolt; P is the pressure oil-source interface, and T is the oil return interface, and H is a supporting leg cylinder rod chamber interface, and V is the pressure oil-source interface of getting on the bus, E, A
(1,2,3,4), B
(1,2,3,4)Be supporting leg cylinder rodless cavity interface.
In Fig. 2: two-position two-way hydraulic control valve 7 has valve body 8, and screw plug 11, damper rod 12, O RunddichtringO 13, bolt 14, two-position two-way hydraulic control spool 15, spring seat 16, spring 17, sealing gasket 18, spring seat 19 are installed in the valve body 8; Oil duct b1, b2, b4, b5 are arranged in valve body 8; Two-position two-way hydraulic control spool 15 left ends and screw plug 11 offset, and right-hand member offsets by spring on the spring seat 16 17 and spring seat 19; Damper rod 12 has oil duct b3 by among the oil duct b4 that is threaded into valve body 8 on the damper rod 12; Selector valve 9 comprises valve body 2, and changeover valve core 20 and changement 21 are installed on the valve body 2; Hydraulic fluid port E, oil duct a1, a2, a3 are arranged on the valve body 2; Oil duct a4, a5, a6 are arranged on the changeover valve core 20.
When the valve rod of selector valve 4 inwardly pushes away, the valve rod of selector valve 9 is in meta, control oil sources by hydraulic fluid port K through oil duct b3 to oil duct b2, promote two-position two-way hydraulic control spool 15 and move right, the 5th supporting leg rodless cavity fluid from hydraulic fluid port E through oil duct a1, oil duct a6, oil duct a5, oil duct a4, oil duct a3, oil duct b2, oil duct b1, oil duct a2 to hydraulic fluid port T oil sump tank.
When the valve rod of selector valve 4 inwardly pushes away, selector valve 9 valve rods are pulled outwardly, and promptly the valve rod of selector valve 9 moves right, the 5th supporting leg rodless cavity fluid from hydraulic fluid port E through oil duct a1, oil duct a2 to hydraulic fluid port T oil sump tank.
In Fig. 3: valve body 8 outer surfaces of two-position two-way hydraulic control valve 7 have hydraulic fluid port C, D, K, O, communicate with oil duct a2, oil duct a3, oil duct b4, hydraulic fluid port T respectively.
Fig. 4 is that the present invention is applied in the hydraulic schematic diagram on the truck system under the hydraulic hoist.The hydraulic fluid port P of this valve connects pressure oil-source, and hydraulic fluid port T takes back fuel tank; Hydraulic fluid port V connects vehicle control; Hydraulic fluid port H meets supporting leg cylinder and horizontal cylinder rod chamber, hydraulic fluid port A
(1,2,3,4)Connect supporting leg cylinder rodless cavity, hydraulic fluid port B
(1,2,3,4)Connect the horizontal cylinder rodless cavity, hydraulic fluid port E connects the 5th supporting leg cylinder rodless cavity.
The work control procedure of this valve is as follows:
1, relief valve 3 guarantees that its pressure peak of pressure oil-source of each actuator port output of this valve is a rating value, plays the safety protection effect.
2, to guarantee to import its pressure peak of pressure oil-source of each supporting leg cylinder rodless cavity be a rating value to overload valve 5, plays overload protective function.
3, selector valve 4 is a three position four-way directional control valve.When the valve rod of selector valve 4 was in meta, the pressure oil-source of oil pocket P led to vehicle control through oil pocket V; When the valve rod of selector valve 4 pulled outward, oil pocket P provided pressure oil-source to five groups of selector valves 9; When the valve rod of selector valve 4 pushed away inward, oil pocket P provided pressure oil-source to oil pocket H, and simultaneously, pressure oil-source promotes two-position two-way hydraulic control spool 15, and the pressure oil of oil pocket E is got back to oil sump tank through hydraulic fluid port T.
4, selector valve 9 is totally five groups, 3-position 4-way, oil circuit in parallel; When the valve rod of selector valve 4 pulled outward, the pressure oil-source of oil pocket P was given five groups of selector valve 9 fuel feeding, and at this moment, when the valve rod of selector valve 9 pulled outward, working oil chamber B pressure oil output was to the rodless cavity of support oil cylinder; When the valve rod of selector valve 9 pushed away inward, working oil chamber E, A pressure oil output arrived the rodless cavity of support oil cylinder.
Claims (3)
1. be with the step-down multi-path reversing valve of two-position two-way hydraulic control valve, comprise a control valve and a two-position two-way hydraulic control valve, it is characterized in that: the two-position two-way hydraulic control valve is connected by bolt on the Reversing valve plate of the 5th supporting leg of control valve, and connection hydraulic fluid port C, the D on the two-position two-way hydraulic control valve is connected with oil duct a2, a3 on the control valve respectively.
2. the step-down multi-path reversing valve of band two-position two-way hydraulic control valve according to claim 1, it is characterized in that, control valve comprises valve body, valve body surface has outside hydraulic fluid port P, T, V, H, E, A and the B of connecting, valve inner has cast form oil pocket and oil duct, and relief valve, selector valve, overload valve, Pilot operated check valve, 5 groups of selector valves, 5 groups of one-way valves are housed on it successively.
3. the step-down multi-path reversing valve of band two-position two-way hydraulic control valve according to claim 1, it is characterized in that, the two-position two-way hydraulic control valve comprises valve body, valve body surface has outside hydraulic fluid port C, D, K, O and the inner machine of connecting to add shaping oil pocket and oil duct, the valve body of two-position two-way hydraulic control valve is that machine adds shaping chip valve body, and two-position two-way hydraulic control spool and damper rod are housed in the valve body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101344751A CN101839260B (en) | 2010-03-21 | 2010-03-21 | Step-down multipath reversing valve with two-position two-way hydraulic control valve |
| PCT/CN2011/072018 WO2011116677A1 (en) | 2010-03-21 | 2011-03-21 | Control loop and unloading multipath reversing valve for multi support legs of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101344751A CN101839260B (en) | 2010-03-21 | 2010-03-21 | Step-down multipath reversing valve with two-position two-way hydraulic control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101839260A true CN101839260A (en) | 2010-09-22 |
| CN101839260B CN101839260B (en) | 2011-11-23 |
Family
ID=42742854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101344751A Expired - Fee Related CN101839260B (en) | 2010-03-21 | 2010-03-21 | Step-down multipath reversing valve with two-position two-way hydraulic control valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101839260B (en) |
| WO (1) | WO2011116677A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011116677A1 (en) * | 2010-03-21 | 2011-09-29 | 长沙中联重工科技发展股份有限公司 | Control loop and unloading multipath reversing valve for multi support legs of crane |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267148A (en) * | 2013-05-31 | 2013-08-28 | 张立 | Hydraulic excavator moving arm lift |
| CN117450126B (en) * | 2023-12-20 | 2024-03-15 | 中联重科土方机械有限公司 | Hydraulic system, oil return control method and related equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006092274A2 (en) * | 2005-02-28 | 2006-09-08 | Hycos S.R.L. | Hydraulic valve |
| CN201057181Y (en) * | 2007-10-27 | 2008-05-07 | 常德信诚液压有限公司 | Balancing brake valve |
| CN101265927A (en) * | 2008-05-04 | 2008-09-17 | 南通启重润滑设备有限公司 | Automatic hydraulic change-over valve |
| CN201317637Y (en) * | 2008-12-23 | 2009-09-30 | 常德信诚液压有限公司 | Turning control assembly of hydraulic truck crane |
| CN201636103U (en) * | 2010-03-21 | 2010-11-17 | 常德中联重科液压有限公司 | Debarkation multiple reversing valve with two-position and two-way hydraulic control valve |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3792779A (en) * | 1968-10-24 | 1974-02-19 | Us Railway Mfg Co | Gantry cranes |
| US3550506A (en) * | 1969-05-09 | 1970-12-29 | Grove Mfg Co | Controls for outrigger assemblies of mobile cranes and the like |
| US3814265A (en) * | 1973-08-20 | 1974-06-04 | Harnischfeger Corp | Hydraulic crane control system having means for deactivating control valves when operating limit is exceeded |
| US4449734A (en) * | 1982-07-07 | 1984-05-22 | Hydra-Jack, Inc. | Mechanical locking outrigger hydraulic jack for an outrigger assembly |
| DE3482463D1 (en) * | 1983-04-22 | 1990-07-19 | Fmc Corp | HYDRAULIC SYSTEM FOR A SELF-LIFTING CRANE. |
| CN2504157Y (en) * | 2001-07-02 | 2002-08-07 | 温州市液压件厂 | Hydraulic multiroute valve of crane truck |
| CN2601238Y (en) * | 2003-01-13 | 2004-01-28 | 安徽省三色照明股份有限公司 | Hydraulic controller for crane level supporting and upright support sequential extension action |
| CN2761929Y (en) * | 2005-04-06 | 2006-03-01 | 常德信诚液压有限公司 | Integral multipass reversal valve |
| CN2809300Y (en) * | 2005-06-02 | 2006-08-23 | 竺仲鸣 | Integral multi-way reversing valve |
| CN101839260B (en) * | 2010-03-21 | 2011-11-23 | 常德中联重科液压有限公司 | Step-down multipath reversing valve with two-position two-way hydraulic control valve |
-
2010
- 2010-03-21 CN CN2010101344751A patent/CN101839260B/en not_active Expired - Fee Related
-
2011
- 2011-03-21 WO PCT/CN2011/072018 patent/WO2011116677A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006092274A2 (en) * | 2005-02-28 | 2006-09-08 | Hycos S.R.L. | Hydraulic valve |
| CN201057181Y (en) * | 2007-10-27 | 2008-05-07 | 常德信诚液压有限公司 | Balancing brake valve |
| CN101265927A (en) * | 2008-05-04 | 2008-09-17 | 南通启重润滑设备有限公司 | Automatic hydraulic change-over valve |
| CN201317637Y (en) * | 2008-12-23 | 2009-09-30 | 常德信诚液压有限公司 | Turning control assembly of hydraulic truck crane |
| CN201636103U (en) * | 2010-03-21 | 2010-11-17 | 常德中联重科液压有限公司 | Debarkation multiple reversing valve with two-position and two-way hydraulic control valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011116677A1 (en) * | 2010-03-21 | 2011-09-29 | 长沙中联重工科技发展股份有限公司 | Control loop and unloading multipath reversing valve for multi support legs of crane |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011116677A1 (en) | 2011-09-29 |
| CN101839260B (en) | 2011-11-23 |
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Granted publication date: 20111123 Termination date: 20200321 |
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| CF01 | Termination of patent right due to non-payment of annual fee |