CN110410375A - A kind of reversal valve valve rod of hydraulic wire crimping connector - Google Patents
A kind of reversal valve valve rod of hydraulic wire crimping connector Download PDFInfo
- Publication number
- CN110410375A CN110410375A CN201910481439.3A CN201910481439A CN110410375A CN 110410375 A CN110410375 A CN 110410375A CN 201910481439 A CN201910481439 A CN 201910481439A CN 110410375 A CN110410375 A CN 110410375A
- Authority
- CN
- China
- Prior art keywords
- valve rod
- valve
- rod section
- section
- wire crimping
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
- H01R43/048—Crimping apparatus or processes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of reversal valve valve rods of hydraulic wire crimping connector, including shell and valve stem body；The shell horizontal insertion is assemblied in the center position of valve body, and the valve stem body is removably inserted into and is cooperated in shell；The valve stem body is fabricated structure, from left to right successively includes left part, the first valve rod section, linkage section, the second valve rod section and right part；Ladder transition between the left part and the first valve rod section；The both ends of the linkage section are threadedly engaged and connect with the first valve rod section and the second valve rod section；Connection is threadedly engaged between the second valve rod section and right part.The present invention enables valve rod integrally to take out by the matching design of shell and shell and valve rod, reduces the difficulty of valve rod replacement or maintenance, easy to operate；By the box-like structure design of valve rod group, each rod segment is individually dismantled, convenient for the quick-replaceable of stem wear section, reduces maintenance cost, practicability is stronger, wide market.
Description
Technical field
The present invention relates to machinery equipment field, more particularly to a kind of reversal valve valve rod of hydraulic wire crimping connector.
Background technique
In power transmission and distribution line construction or maintenance, need to carry out connecting or reinforcement using hydraulic wire crimping connector.It changes
It is one of the important component of hydraulic wire crimping connector to valve, reversal valve can gear shift be accurately to guarantee hydraulic wire crimping connector just
Often, the premise of trouble free service.Valve rod plays the role of sealing in hydraulicdirectional control valve and changes hydraulic oil flow direction, is that guarantee is hydraulic
The critical component that reversal valve works normally.
There are the following problems in design and use for the valve rod of existing hydraulicdirectional control valve: 1, valve rod is integral design, position
In the part of seal section, on the one hand closely connect with sealing element, on the other hand directly contacted with locating piece, valve rod to valve body or
During direction far from valve body is pulled, the part wears are serious, and the frequency of replacement is high with respect to the other parts frequency of valve rod,
And since valve rod is integral design, so all whole valve rods of replacement are needed every time, higher cost；2, valve rod is directly embedded in
In valve body, when needing replacing valve rod, need to dismantle valve body, it is inconvenient；3, when pulling operation handle and being shifted gears, no
It is easy to find gear accurately, shift resistance is big, in addition, rotation slightly, which occurs, in valve rod will all increase difficulty of wearing and shift gears.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of reversal valve valve rods of hydraulic wire crimping connector, are able to solve
The above problem.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of hydraulic wire crimping connector is provided
Reversal valve valve rod, comprising: shell and valve stem body；The shell horizontal insertion is assemblied in the center position of valve body, institute
It states valve stem body and is removably inserted into and be cooperated in the shell；The valve stem body is fabricated structure, from left to right successively
Including left part, the first valve rod section, linkage section, the second valve rod section and right part；Wherein, the left part and first valve rod
Ladder transition between section；The both ends of the linkage section are threadedly engaged and connect with the first valve rod section and the second valve rod section；It is described
Connection is threadedly engaged between second valve rod section and right part.
In a preferred embodiment of the present invention, the oil groove being connected to the oil duct on valve body, institute are offered on the shell
It states and begins with band oil return hole in the first valve rod section；The oil return hole is connected to the oil duct.
In a preferred embodiment of the present invention, it is disposed with and to be spaced apart from left to right in the second valve rod section
The notch of low pressure oil locating slot and high pressure oil locating slot, the low pressure oil locating slot and high pressure oil locating slot is semicircle recessed
Slot.
In a preferred embodiment of the present invention, the semi-circular recesses of the low pressure oil locating slot are fixed towards the high pressure oil
Position slot side is arcuate structure, and height is lower than the height of the other side；The semi-circular recesses of the high pressure oil locating slot are towards institute
Stating low pressure oil locating slot side is arcuate structure, and height is lower than the height of the other side.
In a preferred embodiment of the present invention, the arcuate structure of the low pressure oil locating slot is to the high pressure oil locating slot
Arcuate structure between be provided with elastic wear-resisting layer.
In a preferred embodiment of the present invention, the first valve rod section and the second valve rod section are connect with the linkage section
Fitting groove is had in the middle part of one end, internal screw thread is had in the fitting groove, and the both ends of the linkage section are described with assembly pillar
It assembles and has external screw thread on pillar, the linkage section passes through the assembly pillar and the first valve rod section and the second valve rod section spiral shell
Line is cooperatively connected.
In a preferred embodiment of the present invention, the first valve rod section is identical with the diameter of the second valve rod section, the company
The diameter for connecing section is less than the diameter of the first valve rod section and the second valve rod section, and the both ends of the linkage section also have and described the
The pyramidal structure of one valve rod section and the cooperation of the second valve rod section.
In a preferred embodiment of the present invention, the right part is identical as the diameter of the second valve rod section, and described
Fitting groove is had in the middle part of one end that two valve rod sections are connect with the right part, has internal screw thread, the right end in the fitting groove
One end that portion is connect with the second valve rod section has external screw thread, the right part on the assembly pillar with pillar is assembled
It is threadedly engaged and is connect with the second valve rod section by the assembly pillar；The other end of the right part has connecting hole.
In a preferred embodiment of the present invention, sliding rail of the inner surface of the shell with protrusion, first valve rod
The outer surface of section has the sliding slot cooperated with the sliding rail.
In a preferred embodiment of the present invention, the sliding slot is symmetrical along the surface of the first valve rod section, number
Amount is two or more, and the quantity of the sliding rail and position match with the sliding slot.
The beneficial effects of the present invention are: a kind of reversal valve valve rod of hydraulic wire crimping connector of the present invention, structure is simple, design
Novelty enables valve rod integrally to take out by the matching design of shell and shell and valve rod, reduces valve rod replacement or maintenance
Difficulty, it is easy to operate；By the box-like structure design of valve rod group, each rod segment is individually dismantled, is ground convenient for valve rod
The quick-replaceable of section is damaged, reduces maintenance cost, practicability is stronger, wide market.
Detailed description of the invention
Fig. 1 is a kind of stereochemical structure signal of one preferred embodiment of reversal valve valve rod of hydraulic wire crimping connector of the present invention
Figure；
Fig. 2 is the attachment structure schematic diagram of shown linkage section Yu the first mobile jib section and the second mobile jib section；
Fig. 3 is the schematic cross-section of the fit structure of shown shell and the first mobile jib section；
The components in the drawings are labeled as follows: 1. valve bodies, 2. shells, 21. oil grooves, 3. valve rods, 31. left parts, 32. first valve rods
Section, 33. linkage sections, 34. second valve rod sections, 35. right parts, 4. fitting grooves, 5. assembly pillars, 6. pyramidal structures, 7. low pressure oils
Locating slot, 8. high pressure oil locating slots, 9. connecting holes, 10. sliding rails, 11. sliding slots, 12. elastic wear-resisting layers, 321. oil return holes.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Fig. 1-3 is please referred to, the embodiment of the present invention includes:
Embodiment 1
Present invention discloses a kind of reversal valve valve rods of hydraulic wire crimping connector, comprising: shell 2 and valve stem body 3；The shell
2 horizontals are embedded in the center position for being assemblied in valve body 1, and the valve stem body 3 is removably inserted into and is cooperated to the shell 2
It is interior.
The valve stem body 3 is fabricated structure, from left to right successively includes left part 31, the first valve rod section 32, connection
The 33, second valve rod section 34 of section and right part 35；Wherein, the left part side of the valve stem body 3 is matched with the valve deck on valve body 1
It closes, the right part of the valve stem body 3 and operation handle are articulated and connected.
Specifically, ladder transition connects between the left part 31 and the first valve rod section 32.
Fitting groove is had in the middle part of one end that 32 sections of first valve rod and the second valve rod section 34 are connect with the linkage section 33
4, have internal screw thread in the fitting groove 4, the both ends of the linkage section 33 are with assembly pillar 5, band on the assembly pillar 5
There is external screw thread, the linkage section 33 is matched by the assembly pillar 5 and the first valve rod section 32 and 34 screw thread of the second valve rod section
Close connection.The first valve rod section 32 is identical with the diameter of the second valve rod section 34, and the diameter of the linkage section 33 is less than described the
The diameter of one valve rod section 32 and the second valve rod section 34, the both ends of the linkage section 33 also have and the first valve rod section 32 and
The pyramidal structure 6 of two valve rod sections 34 cooperation, the i.e. larger diameter end of pyramidal structure 6 and the first valve rod section 32 and the second valve rod section
34 connect, and its height is identical as the first valve rod section 32 and the second valve rod section 34.It, can be with by the design of pyramidal structure 6
The internal impact in reversal valve commutation process is reduced, improves the service life of valve rod, and then improve the service life of reversal valve.
The low pressure oil locating slot 7 being spaced apart is disposed in the second valve rod section 34 from left to right and high pressure oil is fixed
Position slot 8, the notch of the low pressure oil locating slot 7 and high pressure oil locating slot 8 is semi-circular recesses, with locating piece (generally
Ball) it matches, realize gear regulation.Specifically, the semi-circular recesses of the low pressure oil locating slot 7 are fixed towards the high pressure oil
The side of position slot 8 is arcuate structure, and height is lower than the height of the other side；The semi-circular recesses court of the high pressure oil locating slot 8
It is arcuate structure to the side of the low pressure oil locating slot 7, height is lower than the height of the other side.The low pressure oil locating slot 7
Arcuate structure be provided with elastic wear-resisting layer 12 between the arcuate structure of the high pressure oil locating slot 8.By will be semicircle recessed
Slot is designed as tilted structure, and the side arcuate structure for keeping height low, so that valve rod 3 is in low pressure oil locating slot 7 and high pressure
Gear is converted between oily locating slot 8 to be more easier, controllably；By the design of elastic wear-resisting layer, gear shift position Shi Dingwei can be reduced
Abrasion of the part to semi-circular recesses facilitates the service life for extending valve rod to reduce the abrasion to the second valve rod section 34.
The right part 35 is identical as the diameter of the second valve rod section 34.The second valve rod section 34 and the right part
Fitting groove 4 is had in the middle part of one end of 35 connections, and internal screw thread, the right part 35 and second valve are had in the fitting groove 4
One end that rod segment 34 connects has external screw thread, the right part 34 passes through described with pillar 5 is assembled on the assembly pillar 5
Assembly pillar 5 is threadedly engaged with the second valve rod section 34 to be connect；The other end of the right part 35 has connecting hole 9, is used for
Right part and operation handle are articulated and connected.
The oil groove 21 being connected to the oil duct on valve body 1 is offered on the shell 2, is begun in the first valve rod section 32
Band oil return hole 321；The oil return hole 321 is connected to the oil groove 21, to realize the connection of each oil circuit in reversal valve.
Sliding rail 10 of the inner surface of the shell 2 with protrusion, the outer surface of the first valve rod section 32 have with it is described
The sliding slot 11 that sliding rail 10 cooperates, and the sliding slot 11 is symmetrical along the surface of the first valve rod section 32, quantity is two
More than, the quantity of the sliding rail 10 and position match with the sliding slot 11.The length of the first valve rod section 32 accounts for the valve
1/2 or more of 3 length of bar.Cooperated in a manner of sliding slot, sliding rail the first valve rod section 32 of valve rod 3 with the shell 2, a side
Face can reduce the resistance to sliding that valve rod moves left and right in shift process, reduce the difficulty of gear shift operation；On the other hand, it plays
The effect of the guides stem direction of motion prevents valve rod from occurring slight rotation during shift, so that valve body and shell, valve
Oil duct, oil groove and oil return hole between bar cannot be fully mated, thus the case where causing oil leak.
A kind of reversal valve valve rod of hydraulic wire crimping connector of the present invention, structure is simple, novel, has the advantages that
1, by the matching design of shell and shell and valve rod, valve rod is integrally taken out, reduces valve rod replacement or maintenance
Difficulty, it is easy to operate；
2, by valve rod group box-like structure design, each rod segment is individually dismantled, convenient for the quick-replaceable of stem wear section,
Also cost is reduced；
3, by will be designed to the fit system of sliding rail and sliding slot between shell and valve rod, it on the one hand can reduce valve rod and working
On the other hand resistance in the process plays the role of the guides stem direction of motion, prevent from occurring during the motion because of valve rod gently
It is micro- rotation and cause oil duct, oil groove and oil return hole cooperation not exclusively and cause oil leak；
4, by the design of the structure of low pressure oil locating slot and high pressure oil locating slot notch and the design of elastic wear-resisting layer, on the one hand
It is more easier gear shift position, controllably；Abrasion of the locating piece to semi-circular recesses when on the other hand can reduce gear shift position, to drop
The low abrasion to the second valve rod section facilitates the service life for extending valve rod.
In the description of the present invention, it should be noted that the instruction such as term " on ", "lower", "left", "right", "inner", "outside"
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, and comes for those skilled in the art
It says, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any modification, equivalent
Replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of reversal valve valve rod of hydraulic wire crimping connector characterized by comprising shell and valve stem body；The shell
Horizontal is embedded in the center position for being assemblied in valve body, and the valve stem body is removably inserted into and is cooperated in the shell；Institute
State valve stem body be fabricated structure, from left to right successively include left part, the first valve rod section, linkage section, the second valve rod section and
Right part；Wherein, ladder transition between the left part and the first valve rod section；The both ends of the linkage section and described first
Valve rod section and the second valve rod section are threadedly engaged connection；Connection is threadedly engaged between the second valve rod section and right part.
2. the reversal valve valve rod of hydraulic wire crimping connector according to claim 1, which is characterized in that opened up on the shell
There is the oil groove being connected to the oil duct on valve body, band oil return hole is begun in the first valve rod section；The oil return hole and the oil
Road connection.
3. the reversal valve valve rod of hydraulic wire crimping connector according to claim 1, which is characterized in that the second valve rod section
On be disposed with the low pressure oil locating slot and high pressure oil locating slot being spaced apart, the low pressure oil locating slot and height from left to right
The notch of pressure oil locating slot is semi-circular recesses.
4. the reversal valve valve rod of hydraulic wire crimping connector according to claim 3, which is characterized in that the low pressure oil positioning
The semi-circular recesses of slot are arcuate structure towards high pressure oil locating slot side, and height is lower than the height of the other side；It is described
The semi-circular recesses of high pressure oil locating slot are arcuate structure towards low pressure oil locating slot side, and height is lower than the other side
Highly.
5. the reversal valve valve rod of hydraulic wire crimping connector according to claim 4, which is characterized in that the low pressure oil positioning
The arcuate structure of slot is provided with elastic wear-resisting layer between the arcuate structure of the high pressure oil locating slot.
6. the reversal valve valve rod of hydraulic wire crimping connector according to claim 1, which is characterized in that the first valve rod section
Fitting groove is had with one end middle part that the second valve rod section is connect with the linkage section, has internal screw thread, institute in the fitting groove
The both ends of linkage section are stated with pillar is assembled, external screw thread are had on the assembly pillar, the linkage section is small by the assembly
Column is threadedly engaged and connect with the first valve rod section and the second valve rod section.
7. the reversal valve valve rod of hydraulic wire crimping connector according to claim 6, which is characterized in that the first valve rod section
Identical with the diameter of the second valve rod section, the diameter of the linkage section is less than the diameter of the first valve rod section and the second valve rod section,
The both ends of the linkage section also have the pyramidal structure with the first valve rod section and the cooperation of the second valve rod section.
8. the reversal valve valve rod of hydraulic wire crimping connector according to claim 1, which is characterized in that the right part and institute
The diameter for stating the second valve rod section is identical, and fitting groove, institute are had in the middle part of one end that the second valve rod section is connect with the right part
It states with internal screw thread in fitting groove, one end that the right part is connect with the second valve rod section is with assembly pillar, the dress
With external screw thread is had on pillar, the right part is threadedly engaged with the second valve rod section by the assembly pillar and is connect；Institute
The other end of right part is stated with connecting hole.
9. the reversal valve valve rod of hydraulic wire crimping connector according to claim 1, which is characterized in that the interior table of the shell
Sliding rail of the face with protrusion, the outer surface of the first valve rod section have the sliding slot cooperated with the sliding rail.
10. the reversal valve valve rod of hydraulic wire crimping connector according to claim 9, which is characterized in that the sliding slot is along institute
The surface for stating the first valve rod section is symmetrical, and quantity is two or more, the quantity of the sliding rail and position and the sliding slot phase
Matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910481439.3A CN110410375A (en) | 2019-06-04 | 2019-06-04 | A kind of reversal valve valve rod of hydraulic wire crimping connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910481439.3A CN110410375A (en) | 2019-06-04 | 2019-06-04 | A kind of reversal valve valve rod of hydraulic wire crimping connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110410375A true CN110410375A (en) | 2019-11-05 |
Family
ID=68358446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910481439.3A Pending CN110410375A (en) | 2019-06-04 | 2019-06-04 | A kind of reversal valve valve rod of hydraulic wire crimping connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410375A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2221135Y (en) * | 1995-04-27 | 1996-02-28 | 史保旺 | Leakage-proof elastic valve core |
| CN201096114Y (en) * | 2007-09-18 | 2008-08-06 | 常熟市常福电力机具有限公司 | Hydraulic wire crimping connector changing-over valve |
| CN202065527U (en) * | 2011-04-29 | 2011-12-07 | 徐工集团工程机械股份有限公司建设机械分公司 | Force taking device of concrete pump truck and electromagnetic reversing valve thereof |
| CN202108798U (en) * | 2011-05-03 | 2012-01-11 | 三一重工股份有限公司 | Hydraulic rotary valve and engineering machinery |
| CN204061392U (en) * | 2014-08-29 | 2014-12-31 | 毅联实业(上海)有限公司 | For the double air controlled selector valve of pneumatic motor |
| CN107830202A (en) * | 2017-10-25 | 2018-03-23 | 上海永瑞气动有限公司 | The electromagnetic control valve of valve core structure can be combined in multistage |
| CN108591152A (en) * | 2018-04-13 | 2018-09-28 | 浙江大学 | A kind of hydraulic motor rotary valve all-in-one machine independently coupled |
-
2019
- 2019-06-04 CN CN201910481439.3A patent/CN110410375A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2221135Y (en) * | 1995-04-27 | 1996-02-28 | 史保旺 | Leakage-proof elastic valve core |
| CN201096114Y (en) * | 2007-09-18 | 2008-08-06 | 常熟市常福电力机具有限公司 | Hydraulic wire crimping connector changing-over valve |
| CN202065527U (en) * | 2011-04-29 | 2011-12-07 | 徐工集团工程机械股份有限公司建设机械分公司 | Force taking device of concrete pump truck and electromagnetic reversing valve thereof |
| CN202108798U (en) * | 2011-05-03 | 2012-01-11 | 三一重工股份有限公司 | Hydraulic rotary valve and engineering machinery |
| CN204061392U (en) * | 2014-08-29 | 2014-12-31 | 毅联实业(上海)有限公司 | For the double air controlled selector valve of pneumatic motor |
| CN107830202A (en) * | 2017-10-25 | 2018-03-23 | 上海永瑞气动有限公司 | The electromagnetic control valve of valve core structure can be combined in multistage |
| CN108591152A (en) * | 2018-04-13 | 2018-09-28 | 浙江大学 | A kind of hydraulic motor rotary valve all-in-one machine independently coupled |
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