CN203978985U - A kind of integral multi-way reversing valve for fork truck - Google Patents
A kind of integral multi-way reversing valve for fork truck Download PDFInfo
- Publication number
- CN203978985U CN203978985U CN201420469943.4U CN201420469943U CN203978985U CN 203978985 U CN203978985 U CN 203978985U CN 201420469943 U CN201420469943 U CN 201420469943U CN 203978985 U CN203978985 U CN 203978985U
- Authority
- CN
- China
- Prior art keywords
- valve
- oil
- reversing valve
- safe
- plate
- 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
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a kind of integral multi-way reversing valve for fork truck, comprise an oil-feed valve block, multiple Reversing valve plate and an oil return valve block; Described multiple Reversing valve plate is arranged between described oil-feed valve block and described oil return valve block; Described oil-feed valve block, multiple Reversing valve plate and oil return valve block are monolithic construction; On described oil-feed valve block, be provided with oil inlet P, on described oil return valve block, be provided with a back leakage connection, on described back leakage connection, be provided with an oil return inlet T; On each Reversing valve plate of multiple Reversing valve plates, be provided with one or two actuator port; Within each Reversing valve plate of described multiple Reversing valve plates, be inserted with a valve rod, one end of described valve rod stretches out in outside described Reversing valve plate.A kind of integral multi-way reversing valve for fork truck of the present utility model, have can reduce leakage of oil risk, improve valve functional reliability, maintenance and repair convenient, simplified processing technology, reduced the advantages such as processing cost.
Description
Technical field
The utility model relates to a kind of multi-way valve, especially a kind of integral multi-way reversing valve for fork truck.
Background technique
Multiple directional control valve is widely used in the machinery such as fork truck, is mainly used for meeting the unidirectional locking of actuator.This multi-way valve is integrated in Pilot operated check valve in working body, compact structure, and operating life is high, has reduced the layout of hydraulic system pipeline simultaneously.
At present, existing multiple directional control valve, adopts split-type structural more.As the outline drawing of Fig. 5 multiple directional control valve that is prior art.As Fig. 5 can find out, this existing multiple directional control valve is made up of parts such as oil-feed valve block 1, multiple Reversing valve plate 2 and oil return valve blocks 3, between two adjacent valve blocks, adopt sealing gasket 4 between sheet to seal, sealing gasket between needing multiple, therefore between sheet, the risk of leakage of oil is larger, and the functional reliability of multi-way valve is poor.Mode with bolts between valve block, is fastened as a whole described oil-feed valve block 1, multiple Reversing valve plate 2 and oil return valve block 3 by three clamping bolts 5, exists Sealing to damage or bolt connects the problem of becoming flexible, cause leakage of oil between each point of body component.The multi-way valve of this split-type structural, need be first by Split assembled, and then adds auxiliary hole; Because valve body is when urgent, valve main aperture has micro-distortion, causes valve rod in the time of dress examination, to occur catching phenomenon; So need to become after entirety at separable assembled, need to revise the size of main aperture to ensure the flexibility of stem movement, processing technology is comparatively complicated.
If Fig. 6 is the C-C sectional view of the oil-feed valve block of existing multiple directional control valve in Fig. 5, can find out the internal structure of oil-feed valve block.As shown in Figure 6, in oil-feed valve block, be provided with a straight moving shunting safety valve 26; This directly moves shunting safety valve 26 is also split type valve, and straight moving shunting safety valve 26 comprises safety valve spring 15, safety valve spool 14, valve base of safety valve 13 and cover plate 17; Described safety valve spring 15, safety valve spool 14, valve base of safety valve 13 are arranged in the valve pocket of oil-feed valve block.When assembling, the safety valve spring 15, safety valve spool 14, the valve base of safety valve 13 that directly move shunting safety valve need to be installed in the valve pocket of oil-feed valve block 1, then cover cover plate 17 and also tighten with screw 19.This need to be opened cover plate 17 when directly moving shunting safety valve needs repairing, takes out safety valve spring 15, safety valve spool 14, valve base of safety valve 13 and keeps in repair, and it is very inconvenient to keep in repair.Particularly valve base of safety valve 13, is directly inserted in valve pocket, and between valve base of safety valve 13 and valve pocket, coordinates closely, need to put forth effort valve base of safety valve 13 could be extracted; And on this valve base of safety valve 13, there is no Point of Strength, and very hard while extracting valve base of safety valve 13, cause maintenance to be wasted time and energy, very inconvenient.
Model utility content
The utility model is the deficiency existing in above-mentioned prior art for avoiding, and a kind of integral multi-way reversing valve for fork truck is provided, to reduce the risk of leakage of oil, the functional reliability of raising valve.
The utility model be technical solution problem by the following technical solutions.
For an integral multi-way reversing valve for fork truck, its structural feature is to comprise an oil-feed valve block, multiple Reversing valve plate and an oil return valve block; Described multiple Reversing valve plate is arranged between described oil-feed valve block and described oil return valve block; Described oil-feed valve block, multiple Reversing valve plate and oil return valve block are monolithic construction; On described oil-feed valve block, be provided with oil inlet P, on described oil return valve block, be provided with a back leakage connection, on described back leakage connection, be provided with an oil return inlet T;
On each Reversing valve plate of described multiple Reversing valve plates, be provided with one or two actuator port; Within each Reversing valve plate of described multiple Reversing valve plates, be inserted with a valve rod, one end of described valve rod stretches out in outside described Reversing valve plate.
The structural feature of a kind of integral multi-way reversing valve for fork truck of the present utility model is also:
The left end of described oil-feed valve block is provided with safe valve pocket, is provided with a differential shunting safety valve of plug-in type in described safe valve pocket; The differential shunting safety valve of described plug-in type is Integral valve, is directly plugged in described safe valve pocket;
The differential shunting safety valve of described plug-in type comprises emergency valve seat, safe spool, safety valve spring, safe valve pocket, cover plate, nut and screw; Described emergency valve seat is positioned at the right-hand member of the differential shunting safety valve of plug-in type, and described safe spool is arranged in the inner chamber of described emergency valve seat; Described safe valve pocket fixed cover is located on the outer circumferential face of left part of described emergency valve seat; The right-hand member of described safety valve spring is inserted in the groove of described safe spool left end setting, and connects with the bottom land of described groove; On the inner peripheral surface of the left part of described safe valve pocket and outer circumferential face, be respectively arranged with internal thread and outside thread; The mode that described cover plate is threaded connection is sheathed on the outer circumferential face of left part of described safe valve pocket, makes to be fixedly connected between described cover plate and described safe valve pocket;
Described nut is arranged on the left side of described cover plate, and the mode that described screw is threaded connection is successively inserted in described nut and described cover plate, and the right side of described screw and the left end of described safety valve spring connect.
Compared with the prior art, the utility model beneficial effect is embodied in:
A kind of integral multi-way reversing valve for fork truck of the present utility model, has following technological merit.
(1) oil-feed valve block, Reversing valve plate and oil return valve block are set to monolithic construction, and global formation has reduced the risk of leakage of oil between sheet, has improved the functional reliability of multi-way valve.
(2) without punching, save clamping bolt on valve block, simplified processing technology, shortened the manufacture cycle.
(3) the assembly type safety valve of prior art is made into the differential shunting safety valve of plug-in type of integral type.In the time that the differential shunting safety valve of plug-in type breaks down, only need differential this plug-in type shunting safety valve to extract and can keep in repair in safe valve pocket.The differential shunting safety valve of this plug-in type has and plugs feature easily, makes the maintenance maintenance of the differential shunting safety valve of plug-in type convenient and swift.
A kind of integral multi-way reversing valve for fork truck of the present utility model, have can reduce leakage of oil risk, improve valve functional reliability, maintenance and repair convenient, simplified processing technology, reduced the advantages such as processing cost.
Brief description of the drawings
Fig. 1 is the plan view of a kind of integral multi-way reversing valve for fork truck of the present utility model.
Fig. 2 is the A-A sectional view (sectional view of oil-feed valve block of the present utility model) in Fig. 1.
Fig. 3 is the structural drawing of the differential shunting safety valve of the plug-in type in Fig. 2.
Fig. 4 is the B-B sectional view (sectional view of Reversing valve plate of the present utility model) in Fig. 1.
Fig. 5 is the plan view of the Split multi-way valve of prior art.
Fig. 6 is the C-C sectional view (sectional view of the oil-feed valve block of prior art) in Fig. 5.
Label in accompanying drawing 1～accompanying drawing 6: 1 oil-feed valve block, 2 Reversing valve plates, 3 oil return valve blocks, sealing gasket between 4,5 clamping bolts, 6 oil inlet P, 7 actuator ports, 8 oil return inlet T, 9 valve rods, 10 back leakage connections, 11 safe valve pockets, the differential shunting safety valve of 12 plug-in type, 13 emergency valve seats, 14 safe spools, 15 safety valve springs, 16 safe valve pockets, 17 cover plates, 18 nuts, 19 screws, 20 one-way valves, 21 one-way valve seats, 22 nonreturn valve cores, 23 check valve springs, 24 outside framework oil seals, 26 straight moving shunting safety valves.
Below pass through embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
Referring to accompanying drawing 1～accompanying drawing 4, a kind of integral multi-way reversing valve for fork truck of the present utility model, comprises an oil-feed valve block 1, multiple Reversing valve plate 2 and an oil return valve block 3; Described multiple Reversing valve plate 2 is arranged between described oil-feed valve block 1 and described oil return valve block 3; Described oil-feed valve block 1, multiple Reversing valve plate 2 and oil return valve block 3 are monolithic construction; On described oil-feed valve block 1, be provided with oil inlet P 6, on described oil return valve block 3, be provided with a back leakage connection 10, on described back leakage connection 10, be provided with an oil return inlet T 8;
On each Reversing valve plate 2 of described multiple Reversing valve plate 2, be provided with one or two actuator port 7; Within each Reversing valve plate 2 of described multiple Reversing valve plate 2, be inserted with a valve rod 9, one end of described valve rod 9 stretches out in outside described Reversing valve plate 2.
As Fig. 1, this multi-way valve is set to monolithic construction, and oil-feed valve block, multiple Reversing valve plate and oil return valve block have been made an entirety.Do not need to combine one by one, do not need bolton yet, between valve block also without sealing gasket between sheet is set in addition.Compare with existing Split multi-way valve, there is the following aspects: (1) has saved sealing gasket between sheet, has saved material, avoided sealing the problem that does not tightly cause leakage of oil between sheet simultaneously, improved the functional reliability of multi-way valve; (2) without punching, save clamping bolt on valve block, simplified processing technology, shortened the manufacture cycle.
Integral multitandem valve of the present utility model, is integrated type product, by multiple valve block global formations, reduces the risk of leakage of oil between sheet.In technique, reduce overall fraising technique simultaneously, greatly shortened the manufacture cycle.)
The left end of described oil-feed valve block 1 is provided with safe valve pocket 11, is provided with a differential shunting safety valve 12 of plug-in type in described safe valve pocket 11; The differential shunting safety valve 12 of described plug-in type is Integral valve, is directly plugged in described safe valve pocket 11;
The differential shunting safety valve 12 of described plug-in type comprises emergency valve seat 13, safe spool 14, safety valve spring 15, safe valve pocket 16, cover plate 17, nut 18 and screw 19; Described emergency valve seat 13 is positioned at the right-hand member of the differential shunting safety valve 12 of plug-in type, and described safe spool 14 is arranged in the inner chamber of described emergency valve seat 13; Described safe valve pocket 16 fixed covers are located on the outer circumferential face of left part of described emergency valve seat 13; The right-hand member of described safety valve spring 15 is inserted in the groove of described safe spool 14 left ends settings, and connects with the bottom land of described groove; On the inner peripheral surface of the left part of described safe valve pocket 16 and outer circumferential face, be respectively arranged with internal thread and outside thread; The mode that described cover plate 17 is threaded connection is sheathed on the outer circumferential face of left part of described safe valve pocket 16, makes to be fixedly connected between described cover plate 17 and described safe valve pocket 16;
Described nut 18 is arranged on the left side of described cover plate 17, and the mode that described screw 19 is threaded connection is successively inserted in described nut 18 and described cover plate 17, and the left end of the right side of described screw 19 and described safety valve spring 15 connects.
As Fig. 2 and 3, the screw of the differential shunting safety valve 12 of described plug-in type is socket head screw.In the side that described nut and described cover plate connect, be provided with seal groove, in described seal groove, be provided with seal ring.Safe valve pocket and emergency valve seat are fixedly connected, and described cover plate, nut and screw are all fixed on the left end of described safe valve pocket, and therefore making the differential shunting safety valve of this plug-in type is integral type structure.When use, only need to insert in safe valve pocket and can use, when insertion, safe valve pocket and emergency valve seat are positioned at safe valve pocket, and cover plate, nut and screw are all positioned at outside oil-feed valve block.In the time that the differential shunting safety valve of plug-in type breaks down, only need differential this plug-in type shunting safety valve to extract and can keep in repair in safe valve pocket.Cover plate, the nut etc. of the differential shunting safety valve of plug-in type is all positioned at outside oil-feed valve block, therefore while extracting the differential shunting safety valve of plug-in type, there is good Point of Strength, therefore the differential shunting safety valve of this plug-in type has and plugs feature easily, thereby also makes the maintenance maintenance of the differential shunting safety valve of plug-in type convenient and swift.
As Fig. 4, on described Reversing valve plate 2, be provided with a unidirectional valve pocket, the outlet of described unidirectional valve pocket is positioned at a side at actuator port 7 places of described Reversing valve plate 2; On the inner peripheral surface of described unidirectional valve pocket, be provided with internal thread; In described unidirectional valve pocket, be provided with an one-way valve 20; Described one-way valve 20 comprises one-way valve seat 21, nonreturn valve core 22 and check valve spring 23; Described nonreturn valve core 22 is inserted in described unidirectional valve pocket, the lower end of described one-way valve seat 21 is provided with outside thread, and between the outside thread of described one-way valve seat 21 and the internal thread of described unidirectional valve pocket, screw-thread fit is fixed in described unidirectional valve pocket one-way valve seat 21; The lower end of described one-way valve seat 21 is provided with the upwards upper groove of depression, and described nonreturn valve core 22 tops are inserted in the groove of described one-way valve seat 21 lower ends, and the top of described nonreturn valve core 22 is also provided with the low groove to lower recess; Described check valve spring 23 lower ends are inserted in described low groove and connect with the bottom land of low groove, and the bottom land of the upper groove of the top of described check valve spring 23 and described one-way valve seat 21 connects.Adopt outside framework oil seal 24 as Sealing in described Reversing valve plate 2 and the cooperation place of valve rod 9.
As Figures 1 and 4, described unidirectional valve pocket and described actuator port are positioned at the same side.One-way valve is arranged on the position between valve block unlike existing multi-way valve, and is arranged on actuator port place one side of Reversing valve plate, and therefore one-way valve taking-up and installation are all more convenient, are also convenient to maintenance and the maintenance of one-way valve.In the time needing repairing, only one-way valve seat need to be screwed out from unidirectional valve pocket.And the structure of this set one-way valve, is optimized the front and back runner of one-way valve, make fluid push one-way valve open from one-way valve front end and directly enter work runner, there is no repeatedly bend, thus the fluid pressure loss while greatly having reduced through one-way valve.As can be seen from Figure 4, unidirectional valve pocket both sides all have an oil duct to be connected with the cavity at valve rod place, and two actuator ports are directly connected with the cavity at valve rod place by work oil duct separately, therefore unidirectional valve pocket of the present utility model, compare with the unidirectional valve pocket of prior art, with work runner is directly connected more simple direct, the fluid pressure loss while greatly having reduced to pass through one-way valve.
A kind of integral multi-way reversing valve for fork truck of the present utility model, is mainly used in fork truck.The main relief valve of this multiple directional control valve all adopts integral plugged formula safety valve with shunting relief valve, and (main relief valve is Pilot operated safety valve, shunting relief valve is differential type safety valve), actuator port one-way valve is outside to be installed, and makes relief valve and one-way valve in the time breaking down, be very easy to maintenance and change.Valve inner cavity is optimized, and makes to reduce through the pressure loss of one-way valve.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (2)
1. for an integral multi-way reversing valve for fork truck, it is characterized in that, comprise an oil-feed valve block (1), multiple Reversing valve plate (2) and an oil return valve block (3); Described multiple Reversing valve plate (2) is arranged between described oil-feed valve block (1) and described oil return valve block (3); Described oil-feed valve block (1), multiple Reversing valve plate (2) and oil return valve block (3) are monolithic construction; On described oil-feed valve block (1), be provided with oil inlet P (6), on described oil return valve block (3), be provided with a back leakage connection (10), on described back leakage connection (10), be provided with an oil return inlet T (8);
On each Reversing valve plate (2) of described multiple Reversing valve plate (2), be provided with one or two actuator port (7); Within each Reversing valve plate (2) of described multiple Reversing valve plate (2), be inserted with a valve rod (9), one end of described valve rod (9) stretches out in outside described Reversing valve plate (2).
2. a kind of integral multi-way reversing valve for fork truck according to claim 1, it is characterized in that, the left end of described oil-feed valve block (1) is provided with safe valve pocket (11), is provided with a differential shunting safety valve of plug-in type (12) in described safe valve pocket (11); The differential shunting safety valve of described plug-in type (12) is Integral valve, is directly plugged in described safe valve pocket (11);
The differential shunting safety valve of described plug-in type (12) comprises emergency valve seat (13), safe spool (14), safety valve spring (15), safe valve pocket (16), cover plate (17), nut (18) and screw (19); Described emergency valve seat (13) is positioned at the right-hand member of the differential shunting safety valve of plug-in type (12), and described safe spool (14) is arranged in the inner chamber of described emergency valve seat (13); Described safe valve pocket (16) fixed cover is located on the outer circumferential face of left part of described emergency valve seat (13); The right-hand member of described safety valve spring (15) is inserted in the groove of described safe spool (14) left end setting, and connects with the bottom land of described groove; On the inner peripheral surface of the left part of described safe valve pocket (16) and outer circumferential face, be respectively arranged with internal thread and outside thread; The mode that described cover plate (17) is threaded connection is sheathed on the outer circumferential face of left part of described safe valve pocket (16), makes to be fixedly connected between described cover plate (17) and described safe valve pocket (16);
Described nut (18) is arranged on the left side of described cover plate (17), the mode that described screw (19) is threaded connection is successively inserted in described nut (18) and described cover plate (17), and the left end of the right side of described screw (19) and described safety valve spring (15) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469943.4U CN203978985U (en) | 2014-08-19 | 2014-08-19 | A kind of integral multi-way reversing valve for fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420469943.4U CN203978985U (en) | 2014-08-19 | 2014-08-19 | A kind of integral multi-way reversing valve for fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978985U true CN203978985U (en) | 2014-12-03 |
Family
ID=51976437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420469943.4U Expired - Fee Related CN203978985U (en) | 2014-08-19 | 2014-08-19 | A kind of integral multi-way reversing valve for fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203978985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104179748A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Multiple-directional reversing valve for forklifts |
-
2014
- 2014-08-19 CN CN201420469943.4U patent/CN203978985U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104179748A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Multiple-directional reversing valve for forklifts |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203978984U (en) | A kind of multiple directional control valve for fork truck | |
| CN203978985U (en) | A kind of integral multi-way reversing valve for fork truck | |
| CN204692595U (en) | Industrial refrigeration right-angle type screw down nonreturn valve | |
| CN202251175U (en) | Extra-high-pressure bidirectional hydraulic lock | |
| CN202531513U (en) | Back pressure valve for hydraulic oil return system | |
| CN104179747A (en) | Integral-type multiple-directional reversing valve for forklifts | |
| CN203488786U (en) | Multiway valve body | |
| CN201348062Y (en) | Pneumatic reversal valve | |
| CN206754027U (en) | A kind of plug-in integrated package of differential cylinder control | |
| CN103449334A (en) | Novel multi-way valve | |
| CN102287164B (en) | Control valve for hydraulic well mouth safety valve control system | |
| CN201934407U (en) | Hydraulic ultrahigh-pressure proportional overflow valve | |
| CN104179748B (en) | Multiple-directional reversing valve for forklifts | |
| CN203948365U (en) | Double linked one-way valve | |
| CN209180144U (en) | A kind of press fixture control oil circuit equipped with safety valve | |
| CN204458608U (en) | A kind of used with tractor zero leakage multi-way valve | |
| CN202646212U (en) | Double hydraulic control one-way valve | |
| CN204532688U (en) | Large discharge plug-in type ring cavity control type emergency distributing valve | |
| CN204476903U (en) | Locking selector valve | |
| CN203783893U (en) | Gear pump internally provided with unloading device | |
| CN204459204U (en) | A kind of novel gas path control valve | |
| CN203570751U (en) | Middle-position unloading damping circuit of large-flow electro-hydraulic directional control valve | |
| CN202579394U (en) | Ultrahigh pressure overflow valve | |
| CN203308480U (en) | Cartridge-type medium-flow balance two-way lock | |
| CN203614493U (en) | Pilot oil source valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20200819 |