CN102674210B - Lift converging multiway valve - Google Patents
Lift converging multiway valve Download PDFInfo
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- CN102674210B CN102674210B CN201210147651.4A CN201210147651A CN102674210B CN 102674210 B CN102674210 B CN 102674210B CN 201210147651 A CN201210147651 A CN 201210147651A CN 102674210 B CN102674210 B CN 102674210B
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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 forklift multi-way valve technical field, the multiway valve that is specifically related to that a kind of structure is advanced, through-current capacity is large, relative cost is low and the interflow of good energy-conserving effect hoists.
Background technology
At present, the forklift multi-way valve overwhelming majority below domestic 6～25T is the quantitative open multiway valve of Dual-pump flow-converging, because the forklift door frame required flow that rises is maxim, so pressing maximum flow, system selects Dual-pump flow-converging, driving engine used or motor power (output) are also maxim type selecting.And when door frame inclination or sidesway, required flow is only 30%～45% of maximum flow, but multiway valve is also interflow state, to the flow of dump ram and sidesway oil cylinder much larger than required flow (national Specification door frame tilt the time), therefore need to throttling on multiway valve, by a part of flow overflow, produced thus very large energy loss.
Summary of the invention
For the above-mentioned problems in the prior art, the object of the present invention is to provide a kind of simple in structure, cost is low and the interflow of good energy-conserving effect hoists multiway valve.
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 the interflow valve block that hoists between described oil inlet and oil return valve block and oil-feed valve block, inclination valve block and accessory valve block, described oil inlet and oil return valve block and the interflow valve block that hoists are integral structure, on described oil inlet and oil return valve block, be equipped with governor valve, in the described interflow valve block that hoists, be equipped with the valve rod that hoists, in described multiway valve, be equipped with oil duct, on oil duct, be equipped with one group of hydraulic fluid port, on described oil duct, be equipped with in line check valve, 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 and is arranged between inclination valve block and oil-feed valve block side by side.
Described a kind of interflow multiway valve that hoists, is characterized in that described oil duct comprises P1 oil-feed, P2 oil-feed, T oil duct, A1 oil duct, A1 ' oil duct, oil input channel, back oil road 1 and back oil road; 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 P1 in line check valve in described P1 oil-feed, and described P1 in line 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 P2 in line check valve in described P2 oil-feed, and described P2 in line 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 described oil inlet and oil return valve block, and described governor valve two ends communicate with back oil road 2 and hydraulic fluid port T respectively.
By adopting above-mentioned technology, compared with prior art, beneficial effect of the present invention is as follows:
1) the interflow of the present invention multiway valve that hoists, by only application when forklift door frame hoists of the double pump mode of operation in hydraulic efficiency pressure system, the fluid of double pump is by 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 load discharge, the valve of available so little latus rectum is realized the flow of high one-level latus rectum, by the valve block flow that hoists, can double in theory, guarantee the fork truck action that hoists normally, reduced again the energy loss of driving engine or electrical motor, reached energy-saving effect;
2) the interflow of the present invention multiway valve that hoists, by integrated decline governor valve on back oil road, compare and be connected to the governor valve between lift oil tank and multiway valve, can eliminate fluid while hoisting action and, by the crushing of governor valve, can reach the effect of simplifying system and reducing costs simultaneously;
3) the present invention can realize with the valve of little latus rectum the flow of high one-level latus rectum, by interflow, act on, on the interflow valve block that hoists, can pass 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, for 16T fork truck can adapted;
4) the present invention is by adding the interflow valve block that hoists, can make full use of the other end not actuator port position (lift oil tank is single acting oil cylinder) of interflow valve block of hoisting, and valve body degree of utilization improves, and improves the manufacturability of valve body moulding own;
5) the present invention is by adopting above-mentioned technology, the interflow the obtaining multi-way valve body that hoists is long-pending little, compact conformation, make system time space arrange more easily and handle lighter simultaneously, minimizing system oil pipe is used, thereby can save the manufacturing cost of valve and pipeline, and can reduce the loss of pressure of valve itself, be suitable for applying.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation that hoist during valve rod meta of interflow in valve block that hoist of the present invention;
Fig. 3 is the structural representation of the hoist valve rod of interflow in valve block that hoist of the present invention while playing raise-position;
Fig. 4 is the structural representation of the hoist valve rod of interflow in valve block that hoist of the present invention while declining;
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.
In 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, 10-back oil road 2,11-back oil road 1,12-P2 oil-feed, 13-P1 oil-feed, 14-A1 ' oil duct, 15-A1 oil duct.
The specific embodiment
Below in conjunction with Figure of description, the invention will be further described:
As shown in Fig. 1-6, a kind of interflow multiway valve that hoists, comprise oil inlet and oil return valve block 1 and oil-feed valve block 5, between described oil inlet and oil return valve block 1 and oil-feed valve block 5, be equipped with successively the interflow valve block 2 that hoists, inclination valve block 3 and accessory valve block 4, described oil inlet and oil return valve block 1 and the interflow valve block 2 that hoists are for integral structure, on described oil inlet and oil return valve block 1, be equipped with governor valve 9, in the described interflow valve block 2 that hoists, be equipped with the valve rod 7 that hoists, in described multiway valve, be equipped with oil duct, on oil duct, be equipped with one group of hydraulic fluid port, on described oil duct, be equipped with in line check valve, accessory valve block 4 of the present invention is 1-5, connect and be arranged between inclination valve block 3 and oil-feed valve block 5 side by side, described oil duct comprises P1 oil-feed 13, P2 oil-feed 12, T oil duct, A1 oil duct 15, A1 ' oil duct 14, oil input channel, back oil road 1 11 and back oil road 2 10, 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 in P1 oil-feed 13, be equipped with P1 in line check valve 6, these P1 in line 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, in P2 oil-feed 12, be equipped with P2 in line check valve 8, these P2 in line check valve 8 two ends communicate with hydraulic fluid port P2 and hydraulic fluid port A1 ' respectively.
As shown in Figure 5, on described oil inlet and oil return valve block 1, be equipped with governor valve 9, described governor valve 9 two ends communicate with back oil road 2 10 and hydraulic fluid port T 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 meta position
As shown in Fig. 2, Fig. 6, Fig. 2 is the structural representation that hoist during valve rod meta of interflow in valve block that hoist of the present invention, when engine operation and interflow the hoisting during valve rod meta in valve block that hoist of multiway valve, the oil that the oil entering from the hydraulic fluid port P1 of oil inlet and oil return valve block 1 and hydraulic fluid port P2 from oil-feed valve block 5 enter all through the meta of the interflow valve block 2 that hoists from back oil road 1 11 oil returns, P2 oil-feed 12 communicates with hydraulic fluid port P2, during meta, hydraulic fluid port P2 oil-feed is to back oil road 1 11 oil returns on both sides, now, other oil ducts all do not go rancid, and hydraulic fluid port P1 oil-feed is simultaneously also to back oil road 1 11 oil returns.
2, valve rod 7 is in the position that hoists
As shown in Fig. 3, Fig. 6, Fig. 3 is the structural representation of the hoist valve rod of interflow in valve block that hoist of the present invention while playing raise-position; When the manipulation interflow that hoists hoists valve rod 7 when playing raise-position in valve block 2, hydraulic fluid port P1 enters 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, through valve rod 7 gears that hoist, to A1 oil duct 15, open P1 in line check valve 6 in the P1 oil-feed 13 oil inlet port A1 that goes forward side by side; Simultaneously, hydraulic fluid port P2 collaborates the P2 in line check valve 8 of valve block through accessory valve block 4, inclination valve block 3 successively from the oil input channel of oil-feed valve block 5 to hoisting, through valve rod 7 gears that hoist to A1 ' oil duct 14, together with the oil entering with P1, remove lift oil tank, thereby realize the door frame action that hoists, while hoisting, hydraulic fluid port P2 oil-feed and back oil road 1 11 disconnect, the oil of hydraulic fluid port P2 can only, by P2 in line check valve 8 to A1 ' oil duct 14, enter into hydraulic fluid port A1 '; Simultaneously hydraulic fluid port P1 also disconnects with back oil road 1 11, and the oil of hydraulic fluid port P1 can only first pass through A1 oil duct 15, then by 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, realizes the door frame action that hoists.
3, valve rod 7 is in lowering position
As Figure 4-Figure 6, Fig. 4 is the structural representation of the hoist valve rod of interflow in valve block that hoist of the present invention while declining, Fig. 5 is the structural representation of oil inlet and oil return valve block of the present invention, when manipulation hoists valve rod 7 when declining position, lift oil tank is through the gear effect of the valve rod 7 that hoists, to back oil road 2 10, then the governor valve on oil inlet and oil return valve block 19 to hydraulic fluid port T, then oil sump tank; Simultaneously, the oil entering 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 11 oil sump tanks, now back oil road 1 11 and back oil road 2 10 all communicate with hydraulic fluid port T, hydraulic fluid port A1 is through A1 ' oil duct 14, to back oil road 2 10 oil returns, the oil of back oil road 2 10, by governor valve 9 to hydraulic fluid port T, plays the effect of hydraulic fluid port A1 oil return speed limit.
The interflow of the present invention multiway valve that hoists, by only application when forklift door frame hoists of the double pump mode of operation in hydraulic efficiency pressure system, the fluid of double pump is by 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 load discharge, the valve of available so little latus rectum is realized the flow of high one-level latus rectum, by the valve block flow that hoists, can double in theory, guarantee the fork truck action that hoists normally, reduced again the energy loss of driving engine or electrical motor, reached energy-saving effect; Integrated decline governor valve on back oil road, compares and is connected to the governor valve between lift oil tank and multiway valve, can eliminate fluid while hoisting action and, by the crushing of governor valve, can reach the effect of simplifying system and reducing costs simultaneously; By adopting above-mentioned technology, by the valve of little latus rectum, realized the flow of high one-level latus rectum, by interflow, act on, on the interflow valve block that hoists, can pass 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, for 16T fork truck can adapted, the other end not actuator port position (lift oil tank is single acting oil cylinder) that can make full use of the interflow valve block that hoists, valve body degree of utilization improves, and improves the manufacturability of valve body moulding own; Its compact conformation, makes system time space arrange more easily and handle simultaneously lighter, and reduce system oil pipe and use, thus the manufacturing cost that can save valve and pipeline, and can reduce the loss of pressure of valve itself, be suitable for applying.
Claims (2)
1. the interflow multiway valve that hoists, described multiway valve comprises oil inlet and oil return valve block (1) and oil-feed valve block (5), between oil inlet and oil return valve block (1) described in it is characterized in that and oil-feed valve block (5), be equipped with successively the interflow valve block (2) that hoists, inclination valve block (3) and accessory valve block (4), described oil inlet and oil return valve block (1) and the interflow valve block (2) that hoists are for integral structure, on described oil inlet and oil return valve block (1), be equipped with governor valve (9), in the described interflow valve block (2) that hoists, be equipped with the valve rod that hoists (7), in described multiway valve, be equipped with oil duct, on oil duct, be equipped with one group of hydraulic fluid port, on described oil duct, be equipped with in line check valve, described oil inlet and oil return valve block (1) one side is equipped with safety valve (10), described oil duct comprises P1 oil-feed (13), P2 oil-feed (12), T oil duct, A1 oil duct (15), A1 ' oil duct (14), oil input channel, back oil road 1(11) and back oil road 2(10), 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, in described P1 oil-feed (13), be equipped with P1 in line check valve (6), described P1 in line check valve (6) two ends communicate with hydraulic fluid port P1 and hydraulic fluid port A1 respectively, in described P2 oil-feed (12), be equipped with P2 in line check valve (8), described P2 in line check valve (8) two ends communicate with hydraulic fluid port P2 and hydraulic fluid port A1 ' respectively, on described oil inlet and oil return valve block (1), be equipped with governor valve (9), described governor valve (9) two ends communicate with back oil road 2 and hydraulic fluid port T respectively.
2. a kind of interflow according to claim 1 multiway valve that hoists, is characterized in that described accessory valve block (4), for 1-5, connects and is arranged between inclination valve block (3) and oil-feed valve block (5) side by side.
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 CN102674210A (en) | 2012-09-19 |
| CN102674210B true 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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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2012
- 2012-05-14 CN CN201210147651.4A patent/CN102674210B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN102674210A (en) | 2012-09-19 |
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