CN102674210A - Lift converging multiway valve - Google Patents
Lift converging multiway valve Download PDFInfo
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- CN102674210A CN102674210A CN2012101476514A CN201210147651A CN102674210A CN 102674210 A CN102674210 A CN 102674210A CN 2012101476514 A CN2012101476514 A CN 2012101476514A CN 201210147651 A CN201210147651 A CN 201210147651A CN 102674210 A CN102674210 A CN 102674210A
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Abstract
A lift converging multiway valve belongs to the technical field of forklift multiway valves, and comprises an oil inlet and return valve plate and an oil inlet valve plate, wherein a lift converging valve plate, an inclined valve plate and an accessory valve plate are coordinately arranged between the oil inlet and return valve plate and the oil inlet valve plate, the oil inlet and return valve plate and the lift converging valve plate are arranged into an integral structure, a speed limit valve is arranged on the oil inlet and return valve plate, a lift valve rod is coordinately arranged in the lift converging valve plate, an oil channel and a group of oil ports are coordinately arranged in the multiway valve, an oil inlet check valve is coordinately arranged on the oil channel, and a safety valve is coordinately arranged at one side of the oil inlet and return valve plate. The double-pump working state is only applied when a forklift doorframe is lifted, for other motions of the doorframe, only one pump is required to work, the other pump unloads at low pressure, the normal lift motion of a forklift is ensured, the energy consumption loss of an engine or a motor is also decreased, the use of an oil pipe of a system is reduced, the lift converging multiway valve has a simple structure, the utilization rate of a valve body is improved, the manufacture costs of the valve and a pipeline can be saved, the pressure loss of the valve body can also be reduced, so an energy-saving effect is realized.
Description
Technical field
The invention belongs to fork truck multiway valve technical field, the multiway valve that is specifically related to that a kind of structure is advanced, through-current capacity is big, relative cost low and the interflow of good energy-conserving effect hoists.
Background technology
At present; The fork truck multiway valve overwhelming majority below domestic 6～25T collaborates quantitative open multiway valve for double pump; Required flow is a maxim because forklift door frame rises, and selects the double pump interflow so maximum flow is pressed in system design, and used driving engine or motor power (output) also are the maxim type selecting.And when door frame inclination or sidesway; Required flow is merely 30%～45% of maximum flow; But multiway valve also is the interflow state, to the flow of dump ram and sidesway oil cylinder much larger than required flow (national Specification door frame tilt the time), so need throttling on multiway valve; With a part of flow overflow, produced very big energy loss thus.
Summary of the invention
To the problems referred to above that exist in the prior art, the object of the present invention is to provide a kind of simple in structure, cost interflow low and good energy-conserving effect multiway valve that hoists.
Described a kind of interflow multiway valve that hoists; Described multiway valve comprises oil inlet and oil return valve block and oil-feed valve block, it is characterized in that being equipped with successively between described oil inlet and oil return valve block and the oil-feed valve block hoist interflow valve block, inclination valve block and accessory valve block, and described oil inlet and oil return valve block is an integral structure with the interflow valve block that hoists; Be equipped with governor valve on the described oil inlet and oil return valve block; Be equipped with the valve rod that hoists in the described interflow valve block that hoists, be equipped with oil duct in the described multiway valve, be equipped with one group of hydraulic fluid port on the oil duct; Be equipped with in line check valve on the described oil duct, described oil inlet and oil return valve block one side is equipped with safety valve.
Described a kind of interflow multiway valve that hoists is characterized in that described accessory valve block is 1-5, connects side by side to be arranged between inclination valve block and the oil-feed valve block.
Described a kind of interflow multiway valve that hoists is characterized in that described oil duct comprises P1 oil duct, P2 oil duct, T oil duct, A1 oil duct, A1 ' oil duct, oil input channel, back oil road 1 and back oil road 2; Described hydraulic fluid port comprises hydraulic fluid port P1, hydraulic fluid port P2, hydraulic fluid port T, hydraulic fluid port A1, hydraulic fluid port A1 ', hydraulic fluid port A2, hydraulic fluid port A3, hydraulic fluid port A4, hydraulic fluid port B2, hydraulic fluid port B3, hydraulic fluid port B4.
Described a kind of interflow multiway valve that hoists is characterized in that being equipped with on the described P1 oil duct P1 oil input channel check valve, and described P1 oil input channel check valve two ends communicate with hydraulic fluid port P1 and hydraulic fluid port A1 respectively.
Described a kind of interflow multiway valve that hoists is characterized in that being equipped with on the described P2 oil duct P2 oil input channel check valve, and described P2 oil input channel check valve two ends communicate with hydraulic fluid port P2 and hydraulic fluid port A1 ' respectively.
Described a kind of interflow multiway valve that hoists is characterized in that being equipped with governor valve on the described oil inlet and oil return valve block, and described governor valve two ends communicate with hydraulic fluid port T with back oil road 2 respectively.
Through adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is following:
1) the interflow of the present invention multiway valve that hoists is only used the double pump mode of operation in the hydraulic efficiency pressure system when forklift door frame hoists, the fluid of double pump is through the valve block oil duct valve block interface that collaborates to hoist independently separately that hoists; When other action of door frame; Only need a wherein pump work, another pump low pressure off-load, the valve of available so little latus rectum is realized the flow of high one-level latus rectum; Can double through the valve block flow that hoists in theory; Guarantee the fork truck action that hoists normally, reduced the energy loss of driving engine or electrical motor again, reached energy-saving effect;
2) the interflow of the present invention multiway valve that hoists; Through integrated decline governor valve on back oil road; Comparing is connected to the governor valve between lift oil tank and the multiway valve, can eliminate when action fluid of hoisting at the crushing through governor valve, can reach the effect of simplified system design and cost-cutting simultaneously;
3) the present invention can use the valve of little latus rectum to realize the flow of high one-level latus rectum; Through the interflow effect, can be on the interflow valve block that hoists through two times of flows of this latus rectum maximum flow, for example; It is 250～320 L/min that the valve of 20 latus rectums can reach flow, but is 16T fork truck adapted;
4) the present invention is through the adding interflow valve block that hoists, and the other end that can make full use of the interflow valve block that hoists is actuator port position (lift oil tank is a single acting oil cylinder) not, and the valve body degree of utilization improves, and improves the manufacturability of valve body moulding own;
5) the present invention is through adopting above-mentioned technology; The interflow that the obtains multiway valve valve body that hoists is long-pending little, compact conformation, make the system design time space arrange more easily with handle simultaneously lighter; Minimizing system oil pipe uses; Thereby can practice thrift the manufacturing cost of valve and pipeline, and can reduce the loss of pressure of valve itself, be suitable for applying.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is hoist structural representation during valve rod meta of interflow in the valve block that hoist of the present invention;
Structural representation when Fig. 3 plays raise-position for the valve rod that hoists in the interflow valve block that hoists of the present invention;
Structural representation when Fig. 4 descends for the valve rod that hoists in the interflow valve block that hoists of the present invention;
Fig. 5 is the structural representation of oil inlet and oil return valve block of the present invention;
Fig. 6 hydraulic schematic diagram of the present invention.
Among the figure: 1-oil inlet and oil return valve block, the 2-interflow valve block that hoists, 3-inclination valve block, 4-accessory valve block, 5-oil-feed valve block, 6-P1 in line check valve, the 7-valve rod that hoists, 8-P2 in line check valve, 9-governor valve.
The specific embodiment
Below in conjunction with Figure of description the present invention is done further description:
Shown in Fig. 1-6, a kind of interflow multiway valve that hoists comprises oil inlet and oil return valve block 1 and oil-feed valve block 5; Be equipped with hoist interflow valve block 2, inclination valve block 3 and accessory valve block 4 between described oil inlet and oil return valve block 1 and the oil-feed valve block 5 successively; Described oil inlet and oil return valve block 1 is integral structure with the interflow valve block 2 that hoists, and is equipped with governor valve 9 on the described oil inlet and oil return valve block 1, and described hoisting collaborates to be equipped with the valve rod 7 that hoists in the valve block 2; Be equipped with oil duct in the described multiway valve; Be equipped with one group of hydraulic fluid port on the oil duct, be equipped with in line check valve on the described oil duct, accessory valve block 4 of the present invention is 1-5; Connection is arranged between inclination valve block 3 and the oil-feed valve block 5 side by side, and described oil duct comprises P1 oil duct, P2 oil duct, T oil duct, A1 oil duct, A1 ' oil duct, oil input channel, back oil road 1 and back oil road 2; Described hydraulic fluid port comprises hydraulic fluid port P1, hydraulic fluid port P2, hydraulic fluid port T, hydraulic fluid port A1, hydraulic fluid port A1 ', hydraulic fluid port A2, hydraulic fluid port A3, hydraulic fluid port A4, hydraulic fluid port B2, hydraulic fluid port B3, hydraulic fluid port B4; Wherein be equipped with P1 oil input channel check valve 6 on the P1 oil duct; These P1 oil input channel check valve 6 two ends communicate with hydraulic fluid port P1 and hydraulic fluid port A1 respectively; Described oil inlet and oil return valve block 1 one sides are equipped with safety valve 10, play overload protective function; Be equipped with P2 oil input channel check valve 8 on the P2 oil duct, these P2 oil input channel check valve 8 two ends communicate with hydraulic fluid port P2 and hydraulic fluid port A1 ' respectively.
As shown in Figure 5, be equipped with governor valve 9 on the described oil inlet and oil return valve block 1, described governor valve 9 two ends communicate with hydraulic fluid port T with back oil road 2 respectively.
The interflow of the present invention multiway valve different operating operating mode that hoists is specific as follows:
1, valve rod 7 is in the meta position
Like Fig. 2, shown in Figure 6; Fig. 2 is hoist structural representation during valve rod meta of interflow in the valve block that hoist of the present invention; When engine operation and interflow the hoisting during the valve rod meta in the valve block that hoist of multiway valve, the oil that the oil that gets into from the hydraulic fluid port P1 of oil inlet and oil return valve block 1 and the hydraulic fluid port P2 from oil-feed valve block 5 get into all through the meta of the interflow valve block 2 that hoists from back oil road 1 oil return, the P2 oil duct communicates with hydraulic fluid port P2; Hydraulic fluid port P2 oil-feed is to back oil road 1 oil return on both sides during meta; At this moment, other oil ducts all do not go rancid, and hydraulic fluid port P1 oil-feed is simultaneously also to back oil road 1 oil return.
2, valve rod 7 is in the position that hoists
Like Fig. 3, shown in Figure 6, the structural representation when Fig. 3 plays raise-position for the valve rod that hoists in the interflow valve block that hoists of the present invention; When the manipulation interflow that hoists hoists valve rod 7 when playing raise-position in the valve block 2; Hydraulic fluid port P1 gets into the oil input channel of the interflow valve block 2 that hoists from the oil input channel of oil inlet and oil return valve block 1; To the A1 oil duct, open P1 oil duct check valve 6 on the P1 oil duct oil inlet port A1 that goes forward side by side through valve rod 7 gears that hoist; Simultaneously, hydraulic fluid port P2 from the oil input channel of oil-feed valve block 5 successively through accessory valve block 4, inclination valve block 3 P2 oil input channel check valve 8 to the interflow valve block that hoists, through valve rod 7 gears that hoist to A1 ' oil duct; The oil that gets into P1 comes along lift oil tank; The action thereby the realization door frame hoists, when hoisting, hydraulic fluid port P2 oil-feed and back oil road 1 break off; The oil of hydraulic fluid port P2 can only enter into hydraulic fluid port A1 ' through P2 in line check valve 8 to A1 ' oil duct; Simultaneously hydraulic fluid port P1 also breaks off with back oil road 1, and the oil of hydraulic fluid port P1 can only pass through the A1 oil duct earlier, and again through P1 in line check valve 6, to hydraulic fluid port A1, the oil of hydraulic fluid port A1 ' and hydraulic fluid port A1 collaborates at hydraulic fluid port A1, the action that hoists of realization door frame.
3, valve rod 7 is in lowering position
Shown in Fig. 4-6; Structural representation when Fig. 4 descends for the valve rod that hoists in the interflow valve block that hoists of the present invention, Fig. 5 is the structural representation of oil inlet and oil return valve block of the present invention, when manipulation hoists valve rod 7 to decline position; Lift oil tank is through the gear effect of the valve rod 7 that hoists; To back oil road 2, the governor valve on oil inlet and oil return valve block 19 is to hydraulic fluid port T, oil sump tank more again; Simultaneously; The oil that gets into from hydraulic fluid port P1 and hydraulic fluid port P2 still through the meta of the interflow valve block 2 that hoists from back oil road 1 oil sump tank; This moment, back oil road 1 all communicated with hydraulic fluid port T with back oil road 2, and hydraulic fluid port A1 is through A1 ' oil duct, to back oil road 2 oil returns; The oil of back oil road 2 plays the effect of hydraulic fluid port A1 oil return speed limit through governor valve 9 to hydraulic fluid port T.
The interflow of the present invention multiway valve that hoists is only used the double pump mode of operation in the hydraulic efficiency pressure system when forklift door frame hoists, the fluid of double pump is through the valve block oil duct valve block interface that collaborates to hoist independently separately that hoists; When other action of door frame; Only need a wherein pump work, another pump low pressure off-load, the valve of available so little latus rectum is realized the flow of high one-level latus rectum; Can double through the valve block flow that hoists in theory; Guarantee the fork truck action that hoists normally, reduced the energy loss of driving engine or electrical motor again, reached energy-saving effect; Integrated decline governor valve on back oil road, comparing is connected to the governor valve between lift oil tank and the multiway valve, can eliminate when action fluid of hoisting at the crushing through governor valve, can reach the effect of simplified system design and cost-cutting simultaneously; Through adopting above-mentioned technology, realize acting on the flow of high one-level latus rectum through the interflow by the valve of little latus rectum; Can be on the interflow valve block that hoists through two times of flows of this latus rectum maximum flow, for example, it is 250～320 L/min that the valve of 20 latus rectums can reach flow; But be 16T fork truck adapted; The other end that can make full use of hoists collaborates valve block is actuator port position (lift oil tank is a single acting oil cylinder) not, and the valve body degree of utilization improves, and improves the manufacturability of valve body moulding own; Its compact conformation makes the system design time space arrange more easily and handle easilyer simultaneously, and reduce system's oil pipe and use, thus the manufacturing cost that can practice thrift valve and pipeline, and can reduce the loss of pressure of valve itself, be suitable for applying.
Claims (6)
1. interflow multiway valve that hoists; Described multiway valve comprises oil inlet and oil return valve block (1) and oil-feed valve block (5); It is characterized in that being equipped with successively between described oil inlet and oil return valve block (1) and the oil-feed valve block (5) hoist interflow valve block (2), inclination valve block (3) and accessory valve block (4); The described oil inlet and oil return valve block (1) and the interflow valve block (2) that hoists are equipped with governor valve (9) for integral structure on the described oil inlet and oil return valve block (1), be equipped with the valve rod that hoists (7) in the described interflow valve block (2) that hoists; Be equipped with oil duct in the described multiway valve; Be equipped with one group of hydraulic fluid port on the oil duct, be equipped with in line check valve on the described oil duct, described oil inlet and oil return valve block (1) one side is equipped with safety valve (10).
2. a kind of interflow according to claim 1 multiway valve that hoists is characterized in that described accessory valve block (4) is 1-5, connects side by side to be arranged between inclination valve block (3) and the oil-feed valve block (5).
3. a kind of interflow according to claim 1 multiway valve that hoists is characterized in that described oil duct comprises P1 oil duct, P2 oil duct, T oil duct, A1 oil duct, A1 ' oil duct, oil input channel, back oil road 1 and back oil road 2; Described hydraulic fluid port comprises hydraulic fluid port P1, hydraulic fluid port P2, hydraulic fluid port T, hydraulic fluid port A1, hydraulic fluid port A1 ', hydraulic fluid port A2, hydraulic fluid port A3, hydraulic fluid port A4, hydraulic fluid port B2, hydraulic fluid port B3, hydraulic fluid port B4.
4. a kind of interflow according to claim 3 multiway valve that hoists is characterized in that being equipped with on the described P1 oil duct P1 oil input channel check valve (6), and described P1 oil input channel check valve (6) two ends communicate with hydraulic fluid port P1 and hydraulic fluid port A1 respectively.
5. a kind of interflow according to claim 3 multiway valve that hoists is characterized in that being equipped with on the described P2 oil duct P2 oil input channel check valve (8), and described P2 oil input channel check valve (8) two ends communicate with hydraulic fluid port P2 and hydraulic fluid port A1 ' respectively.
6. a kind of interflow according to claim 3 multiway valve that hoists is characterized in that being equipped with on the described oil inlet and oil return valve block (1) governor valve (9), and described governor valve (9) two ends communicate with hydraulic fluid port T with back oil road 2 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210147651.4A CN102674210B (en) | 2012-05-14 | 2012-05-14 | Lift converging multiway valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210147651.4A CN102674210B (en) | 2012-05-14 | 2012-05-14 | Lift converging multiway valve |
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| Publication Number | Publication Date |
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| CN102674210A true CN102674210A (en) | 2012-09-19 |
| CN102674210B CN102674210B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210147651.4A Active CN102674210B (en) | 2012-05-14 | 2012-05-14 | Lift converging multiway valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943913A (en) * | 2012-11-23 | 2013-02-27 | 福州大学 | Optimized structure of channel of right flowing pair of Kawasaki KMX15RA multi-way valve |
| CN103133446A (en) * | 2013-01-30 | 2013-06-05 | 浙江海宏液压科技股份有限公司 | Valve rod of multi-path valve and multi-path valve with valve rod |
| CN104179747A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Integral-type multiple-directional reversing valve for forklifts |
| CN109114254A (en) * | 2018-09-19 | 2019-01-01 | 合肥长源液压股份有限公司 | A kind of valve group to work in series and parallel for high-low pump and multi-way valve |
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| CN201109915Y (en) * | 2007-11-08 | 2008-09-03 | 张思学 | Three pump fen-confluence fluid-control multi-way valve |
| CN101373027A (en) * | 2008-08-08 | 2009-02-25 | 锦州市力特缸泵阀液压制造有限公司 | Multi-way change valve |
| CN201902384U (en) * | 2010-12-11 | 2011-07-20 | 浙江海宏液压科技股份有限公司 | Multi-way reversing valve of multifunctional fork truck |
| CN202040141U (en) * | 2011-05-13 | 2011-11-16 | 合肥长源液压股份有限公司 | Multi-tandem valve with high pressure unloading function and descending speed limit function for forklift truck |
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2012
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2172364Y (en) * | 1993-09-22 | 1994-07-20 | 肇州液压件厂 | Pressure adaptation multi-way orientable valve |
| CN201109915Y (en) * | 2007-11-08 | 2008-09-03 | 张思学 | Three pump fen-confluence fluid-control multi-way valve |
| CN101373027A (en) * | 2008-08-08 | 2009-02-25 | 锦州市力特缸泵阀液压制造有限公司 | Multi-way change valve |
| CN201902384U (en) * | 2010-12-11 | 2011-07-20 | 浙江海宏液压科技股份有限公司 | Multi-way reversing valve of multifunctional fork truck |
| CN202040141U (en) * | 2011-05-13 | 2011-11-16 | 合肥长源液压股份有限公司 | Multi-tandem valve with high pressure unloading function and descending speed limit function for forklift truck |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943913A (en) * | 2012-11-23 | 2013-02-27 | 福州大学 | Optimized structure of channel of right flowing pair of Kawasaki KMX15RA multi-way valve |
| CN102943913B (en) * | 2012-11-23 | 2014-07-30 | 福州大学 | Optimized structure of channel of right flowing pair of Kawasaki KMX15RA multi-way valve |
| CN103133446A (en) * | 2013-01-30 | 2013-06-05 | 浙江海宏液压科技股份有限公司 | Valve rod of multi-path valve and multi-path valve with valve rod |
| CN103133446B (en) * | 2013-01-30 | 2015-07-08 | 浙江海宏液压科技股份有限公司 | Valve rod of multi-path valve and multi-path valve with valve rod |
| CN104179747A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Integral-type multiple-directional reversing valve for forklifts |
| CN109114254A (en) * | 2018-09-19 | 2019-01-01 | 合肥长源液压股份有限公司 | A kind of valve group to work in series and parallel for high-low pump and multi-way valve |
| CN109114254B (en) * | 2018-09-19 | 2024-01-19 | 合肥长源液压股份有限公司 | Valve group and multi-way valve for serial-parallel operation of high-pressure pump and low-pressure pump |
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| CN102674210B (en) | 2014-11-05 |
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