CN107676528A - valve rod locking mechanism and control valve - Google Patents
valve rod locking mechanism and control valve Download PDFInfo
- Publication number
- CN107676528A CN107676528A CN201610627255.XA CN201610627255A CN107676528A CN 107676528 A CN107676528 A CN 107676528A CN 201610627255 A CN201610627255 A CN 201610627255A CN 107676528 A CN107676528 A CN 107676528A
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- China
- Prior art keywords
- valve rod
- locking mechanism
- positioning sleeve
- valve
- locking
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Classifications
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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
- F16K35/00—Means to prevent accidental or unauthorised actuation
- F16K35/06—Means to prevent accidental or unauthorised actuation using a removable actuating or locking member, e.g. a key
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The present invention relates to a kind of valve rod locking mechanism and control valve, wherein valve rod locking mechanism includes valve rod (1) and positioning sleeve (7), valve rod (1) is at least partially disposed in valve body (2), positioning sleeve (7) is arranged on the periphery of the part of valve rod (1) stretching valve body (2) and is connected with valve body (2), valve rod (1) can move in valve body (2) and positioning sleeve (7), the side wall of positioning sleeve (7) is provided with locking mechanism (6), locking mechanism (6) is mutually held out against to limit the movement of valve rod (1) with valve rod (1) when valve rod (1) is moved to predeterminated position.The present invention sets locking mechanism by the side wall in positioning sleeve so that when valve rod is moved to predeterminated position, locking mechanism contacts with each other with valve rod and mutually held out against, and then limits the further movement of valve rod.This locking mode is simple in construction, and the reliability mechanically held out against to valve rod is higher, suitable for various control valve.
Description
Technical field
The present invention relates to control valve technical field, more particularly to a kind of valve rod locking mechanism and control
Valve.
Background technology
The core that banked direction control valves controls as whole construction machinery hydraulic system, its performance are especially closed
Key.It is each including three working positions in general banked direction control valves：Middle position, left position and right position, and
, it is necessary to which valve rod is locked at into the position when some occasion banked direction control valves commutate to left position or right position, with
Realize the specific function needed for complete machine.
There are some devices for being used to lock valve rod in the prior art, but mostly using threaded connection
Mode is locked, poor reliability, and structure is usually relatively complex, and cost is higher, therefore
Find at this stage it is a kind of be applied to banked direction control valves and it is simple in construction, cost is relatively low, reliability is high
Valve rod locking mechanism is each hydraulic technique personnel in the problem faced.
It should be noted that the information for being disclosed in background of invention part is merely intended to increase
Understanding to the general background of the present invention, and be not construed as recognizing or imply in any form
Information structure prior art known to those skilled in the art.
The content of the invention
The purpose of the present invention is to propose to a kind of valve rod locking mechanism and control valve, to be tied by one kind
The fairly simple valve rod locking mechanism of structure realizes the locking function of valve rod.
To achieve the above object, the invention provides a kind of valve rod locking mechanism, including valve rod and
Positioning sleeve, the valve rod are at least partially disposed in valve body, and the positioning sleeve is set in described
The first end of valve rod is simultaneously connected with the valve body, and the valve rod can be in the valve body and described fixed
Moved in the set of position, the positioning sleeve is provided with locking mechanism, and the valve rod is moved to predeterminated position
Shi Suoshu locking mechanisms can be limited the movement of the valve rod.
Further, the side of the valve rod is provided with groove, and the groove is used in the valve rod
Accommodated when moving to the predeterminated position and limit the locking mechanism, to be tied by the locking
Structure limits the movement of the valve rod.
Further, the groove is provided with along the valve close to the side of the first end of the valve rod
The lug boss of the radial protrusion of bar.
Further, the opposite side relative with the groove of the lug boss is provided with slope, institute
The axis that slope moves closer to the valve rod from the lug boss is stated, so that the valve rod is in institute
Slope Facies described in stating locking mechanism into the forward position of the groove move for the locking mechanism.
Further, the radial outside of the locking mechanism is provided with auxiliary locking mechanism, described auxiliary
Locking mechanism is helped to be used to tie the locking when the locking mechanism locks the valve rod
Structure applies auxiliary coupling mechanism force.
Further, the auxiliary locking mechanism includes back-up ring, and the back-up ring is arranged on described fixed
The periphery of position set, the inwall of the back-up ring are provided with inclined-plane, the inclined-plane cause the back-up ring by
The internal diameter of the nearly valve rod first end is more than the internal diameter away from the valve rod first end, the inclined-plane
Contacted with each other with the locking mechanism.
Further, the auxiliary locking mechanism includes also including the elasticity being connected with the back-up ring
Structure, the elastic construction is used to apply active force to the back-up ring, to realize the back-up ring pair
The auxiliary locking effect of the locking mechanism.
Further, the elastic construction includes spring, and the positioning sleeve is close to the valve body
End is provided with flange, and the spring is arranged between the back-up ring and the flange.
Further, the locking mechanism includes locking member, and the locking member is arranged on described fixed
The side wall of position set；Or the locking mechanism includes being arranged on the inwall of the positioning sleeve
It is raised.
Further, the side wall of the positioning sleeve is provided with through hole, and the locking member is arranged on described
In through hole and the locking member can move in the through hole.
Further, the wall of the through hole can be to the locking mechanism in the through hole
Axially and radially positioned, to prevent the locking mechanism from departing from the through hole.
Further, the locking member is spheroid.
Further, the wall of the through hole includes shell portion and spheroid section, the cylinder
Section is arranged on the radial outside of the positioning sleeve and for carrying out axially determining to the locking mechanism
Position, the spheroid section are arranged on the radially inner side of the positioning sleeve, the opening surface of the spheroid section
Product is less than the cross-sectional area by the centre of sphere of the locking member, and the spheroid section is for the lock
Locking structure carries out radial positioning.
Further, in addition to end shield, the end shield are connected with the valve body, the end shield cover
It is located at the outside of the valve rod and the positioning sleeve.
To achieve the above object, present invention also offers a kind of banked direction control valves, including above-mentioned valve rod
Locking mechanism.
Based on above-mentioned technical proposal, the present invention on positioning sleeve by setting locking mechanism so that
When valve rod is moved to predeterminated position, locking mechanism can limit the further movement of valve rod.It is this
Locking mechanism is set to realize by an end set positioning sleeve in valve rod and on positioning sleeve
The mode of locking, it is simple in construction, and locking can be achieved when valve rod is moved to predeterminated position,
Therefore more convenient, strong applicability is operated.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the application
A part, schematic description and description of the invention is used to explain the present invention, not structure
Into inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of valve rod locking mechanism one embodiment of the present invention.
Fig. 2 is the structural representation of valve rod in valve rod locking mechanism one embodiment of the present invention.
Fig. 3 is the structural representation of valve rod locking mechanism one embodiment guide ring of the present invention.
Fig. 4 is the structural representation of positioning sleeve in valve rod locking mechanism one embodiment of the present invention.
Fig. 5 is stem movement in valve rod locking mechanism one embodiment of the present invention to the first working position
The structural representation put.
Fig. 6 is stem movement in valve rod locking mechanism one embodiment of the present invention to the second working position
The structural representation put.
In figure：1- valve rods, 11- lug bosses, 12- slopes, 13- grooves, 2- valve bodies, 3- end shields,
4- elastic constructions, 5- back-up rings, 51- inclined-planes, 6- locking mechanisms, 7- positioning sleeves, 71- shell portions,
72- spheroid sections, 73- oilholes.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is carried out
Clearly and completely describe.Obviously, described embodiment is only that the part of the present invention is real
Apply example, rather than whole embodiments.Based on embodiments of the invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, is belonged to
The scope of protection of the invention.
In the description of the invention, it is to be understood that term " " center ", " transverse direction ", " vertical
To ", "front", "rear", "left", "right", " on ", " under ", " vertical ", " level ", " top ",
The orientation or position relationship of the instruction such as " bottom ", " interior ", " outer " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of description description of the invention and simplified, rather than instruction or hint
Signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that limiting the scope of the invention.
As shown in figure 1, the structural representation for valve rod locking mechanism one embodiment of the present invention.
In the embodiment, valve rod locking mechanism includes valve rod 1 and positioning sleeve 7, and the valve rod 1 is at least
It is partially disposed in valve body 2, valve body 2 has hollow structure, at least part position of valve rod 1
In in the hollow structure of valve body 2, valve rod 1 can stretch out valve body 2, and the positioning sleeve 7 is arranged
The valve rod 1 first end and be connected with the valve body 2, positioning sleeve 7 is located at valve rod 1
Periphery, the valve rod 1 can move in the valve body 2 and the positioning sleeve 7, described fixed
Position set 7 is provided with locking mechanism 6, and the valve rod 1 is moved to locking knot during predeterminated position
Structure 6 can be limited the movement of valve rod 1, specifically, when valve rod is moved to predeterminated position,
Locking mechanism 6 contacts with each other with the valve rod 1 and mutually leaned, and locking mechanism 6 can hinder
Keep off the further movement of the valve rod 1.
By setting locking mechanism on positioning sleeve so that locked when valve rod is moved to predeterminated position
Locking structure can limit the further movement of valve rod.A this end set by valve rod
Positioning sleeve simultaneously sets locking mechanism to realize the mode of locking on positioning sleeve, simple in construction, and
And locking can be achieved when valve rod is moved to predeterminated position, therefore operation is more convenient, is applicable
Property is strong.
In the above-described embodiments, valve rod 1 can contact with each other and lean with locking mechanism 6, with
The further movement of valve rod 1 is limited, as a preferable implementation, as shown in Fig. 2
The side of the valve rod 1 is provided with groove 13, and the groove 13 is used to move in the valve rod 1
Accommodate during to the predeterminated position and limit the locking mechanism 6, to pass through the locking mechanism 6
Limit the movement of the valve rod 1.That is, when valve rod 1 moves to predeterminated position, locking mechanism
6 enter in groove 13, mobile formation limitation of the groove to locking mechanism 6, bigger being not affected by
Driving force before, locking mechanism 6 can not be run off from groove, and valve rod 1 also can not just continue
Motion, it is achieved thereby that the locking to valve rod 1.
On the basis of above-described embodiment, as shown in Fig. 2 the groove 13 is close to the valve
The side of the first end of bar 1 is provided with the lug boss 11 along the radial protrusion of the valve rod 1, and this is convex
The side that portion 11 is arranged on the valve rod 1 is played, the lug boss 11 forms the groove 13
A part, and the lug boss 11 be located at the locking mechanism 6 enter the groove 13
Initiating terminal.
In this embodiment, valve rod 1 enters valve rod 1 in moving process in locking mechanism 6
On groove 13 in before, valve rod 1 first passes through lug boss 11 and is in contact with locking mechanism 6,
Because lug boss 11 is radially raised relative to the side of valve rod 1, therefore operating personnel are promoting
Valve rod 1 may feel that arduously when being moved to the position that lug boss 11 contacts with locking mechanism 6, convex
Playing portion 11 can prompt to operating personnel, prompt operating personnel's locking mechanism 6 to enter recessed
Valve rod 1 is locked in groove 13.
Further, the opposite side relative with the groove of the lug boss 11 is provided with slope
12, the slope 12 moves closer to the axis of the valve rod 1 from the lug boss 11, i.e.,
Most significant end of the lug boss 11 as slope 12, and the terminal that valve rod 1 moves along slope 12,
Slope 12 can be such that the valve rod 1 enters in the locking mechanism 6 described in the forward position of the groove
Slope 12 is moved relative to the locking mechanism 6, and the change curve that slope 12 is gradually increased can
So that operating personnel slowly increase driving force during driving stem 1 is moved, and in projection
The position driving force in portion 11 reaches maximum.
In the both sides of lug boss 11, slope 12 and the decline of the angle and groove 13 of horizontal plane
Inclined-plane is different from the angle of horizontal plane, and the two is also different to axial force caused by the movement of valve rod 1,
Slope 12 is more gentle, so that operating personnel's thrust required when promoting valve rod 1 to move is slowly
Increase, reach maximum in the position thrust of lug boss 11, then slightly firmly can be by valve rod 1
The position for causing locking mechanism 6 to enter groove 13 is pushed into, realizes the locking to valve rod 1.
As shown in Fig. 2 the stepped change of the diameter of valve rod 1, using direction as shown as reference,
The diameter of valve rod 1 is turned left from the right side to be sequentially reduced, and valve rod 1 is segmented including at least four, is respectively
First segmentation, the second segmentation, the 3rd segmentation and the 4th segmentation.Positioned at the first segmentation of low order end
Diameter it is maximum, the diameter of this segmentation is identical with the internal diameter of the right-hand member of positioning sleeve 7；Positioning sleeve 7
Interior to be provided with the less part of internal diameter, the second segmentation diameter of valve rod 1 is more than the internal diameter of positioning sleeve 7
The diameter of less part, to prevent the mobile excess of valve rod 1；3rd segmentation of valve rod 1 is straight
Footpath is identical with the diameter of the less part of the internal diameter of positioning sleeve 7；Valve rod 1 positioned at high order end
The diameter of 4th segmentation is less than the diameter of the less part of internal diameter of positioning sleeve 7, to ensure valve rod
1 can smoothly move in the starting stage.Wherein, lug boss 11, slope 12 and groove 13 are equal
It is arranged in the 4th segmentation.
Locking mechanism 6 needs external force to locking mechanism 6 during the contact with valve rod 1 is held out against
Auxiliary jacking is carried out, to prevent locking mechanism 6 from directly ejecting positioning sleeve 7 by valve rod 1.As
One preferred embodiment, the radial outside of the locking mechanism 6 are provided with auxiliary locking mechanism,
The auxiliary locking mechanism is used for when the locking mechanism 6 is locked to the valve rod 1 pair
The locking mechanism 6 applies auxiliary coupling mechanism force.Aid in locking mechanism the valve rod 1 with it is described
The contact of locking mechanism 6 can apply with aiding in locking mechanism during holding out against to locking mechanism 6
The suffered power opposite effect power from valve rod 1, to prevent that it is fixed that locking mechanism 6 is ejected
Position set 7.
As a preferred embodiment of auxiliary locking mechanism, as shown in figure 3, the auxiliary
Locking mechanism includes back-up ring 5, and the back-up ring 5 is arranged on the periphery of the positioning sleeve 7, described
The inwall of back-up ring 5 is provided with inclined-plane 51, and the inclined-plane 51 causes the back-up ring 5 close to described
The internal diameter of the end of valve rod 1 is more than the internal diameter away from the end of valve rod 1, the inclined-plane 51 and institute
State locking mechanism 6 to contact, to enable inclined-plane 51 to apply thrust to the locking mechanism 6.
On the basis of above preferred embodiment, the periphery of the positioning sleeve 7 is provided with and the gear
The elastic construction 4 of the connection of circle 5, the elastic construction 4 are used to act on the application of back-up ring 5
Power, to realize that auxiliary locking of the back-up ring 5 to the locking mechanism 6 acts on.
Due in the moving process of valve rod 1, valve rod 1 contacted with each other with locking mechanism 6 and by
Gradually mutually holding out against, back-up ring 5 can be also subjected to displacement during the holding out against of locking mechanism 6, and by
In the presence of elastic construction 4, the athletic meeting of back-up ring 5 is by the effect of elastic construction 4, operation
Personnel can obtain the prompting that valve rod 1 moves process according to the amount of force of elastic construction 4,
When valve rod 1 moves to the position of lug boss 11, the elastic potential energy of elastic construction 4 also reaches most
Greatly.In addition, elastic construction 4 can be also used for resetting the back-up ring 5.
As a preferred embodiment of elastic construction 4, the elastic construction 4 includes spring,
The positioning sleeve 7 is provided with flange close to the end of the valve body 2, and the spring is arranged on described
Between back-up ring 5 and the flange.
As a preferred embodiment of locking mechanism 6, the locking mechanism 6 includes being arranged on
Projection on the inwall of the positioning sleeve 7, when valve rod 1 is moved to predeterminated position, positioning sleeve
Projection on 7 just enters in the groove 13 of valve rod 1, before bigger thrust is not applied,
The projection can be locked valve rod 1.In the embodiment, positioning sleeve 7 can use elasticity
Material, it is convex on positioning sleeve 7 to ensure to enable positioning sleeve 7 to produce slight deformation
Groove 13 can smoothly be entered and left by rising, and the deflection of certain positioning sleeve 7 need not be very big,
To avoid the influence to locking effect.
As another preferred embodiment of locking mechanism 6, the locking mechanism 6 includes locking
Part, the locking member are arranged on the side wall of the positioning sleeve 7, and the locking member is and positioning sleeve 7
Relatively independent part.
As shown in figure 4, the side wall of the positioning sleeve 7 is provided with through hole, the locking mechanism 6 is set
Put in the through hole and the locking member can move in the through hole.Locking mechanism 6
Can be freely movable in the through hole, but its activity simultaneously and limited, can not be with
The activity of meaning.The concrete mode that locking mechanism 6 is arranged on positioning sleeve 7 can also have other choosings
Select, as long as its purpose can be realized.For example locking mechanism 6 can be connected by spring
On the madial wall of positioning sleeve 7, in initial moving process, spring is in compressive state, when
When valve rod 1 moves to 13 position of groove, spring stretches out, and drives locking mechanism 6 to enter groove
In 13, with locking of the realization to valve rod 1, because locking mechanism 6 is located at positioning sleeve in the program
Inside 7, therefore be not in the problem of being ejected, also need not just set back-up ring 5 and elasticity to tie
Structure 4.
Preferably, the wall of the through hole can be to the locking mechanism 6 in the through hole
Axially and radially positioned, to prevent the locking mechanism 6 from departing from the through hole.
In above-mentioned each embodiment, the locking mechanism 6 preferably spheroid, the spirit of spheroid
Activity is higher, is easy to implement locking purpose.
As a schematical embodiment, the wall of the through hole includes the He of shell portion 71
Spheroid section 72, the shell portion 71 are arranged on the radial outside of the positioning sleeve 7 and are used for
Axially position is carried out to the locking mechanism 6, the spheroid section 72 is arranged on the positioning sleeve 7
Radially inner side, the aperture area of the spheroid section 72 be less than the locking member by the centre of sphere
Cross-sectional area, to ensure that locking member will not be dropped by the opening of spheroid section 72, the spheroid section
72 are used to carry out radial positioning to the locking mechanism 6.
Certainly, in addition to the above described embodiments, locking mechanism 6 can be carried out axially and radially
The structure of positioning is also a lot, as long as its purpose can be realized.
As shown in figure 4, being additionally provided with oilhole 73 on positioning sleeve 7, the oilhole 73 is locked for valve rod
The circulation of lubricating oil in locking structure.When valve rod 1 moves back and forth, it is possible to closing chamber occurs,
For example as shown in fig. 6, under the motion state, the chamber on the right side of positioning sleeve 7 is approximation
The chamber of closing, if there is the presence of lubricating oil in the closing chamber, it may be formed and prevent valve rod 1
Continue the pressure of motion, and there is provided after oilhole 73, lubricating oil can be flowed by oilhole 73
Go out, avoid the motion to valve rod 1 from impacting.Certainly, oilhole 73 can set two or two
More than individual.
In addition, valve rod locking mechanism can also include end shield 3, the end shield 3 and the valve body
2 connections, the end shield 3 are located at the outside of the valve rod 1 and the positioning sleeve 7.Certainly,
Above-mentioned locking mechanism 6, back-up ring 5 and elastic construction 4 is also disposed in end shield 3.End shield 3
Valve rod 1, positioning sleeve 7, back-up ring 5 and elastic construction 4 etc. can be prevented by dust or oil gas
Pollution, influence operating reliability.
In the embodiment shown in fig. 1, to the improvement in the structure of valve rod 1 and positioning sleeve
7th, locking mechanism 6, back-up ring 5, elastic construction 4 etc. are in the left end of valve rod 1, it is possible to achieve
Locking of the valve rod 1 when left position works；In addition, to the improvement in the structure of valve rod 1 with
And positioning sleeve 7, locking mechanism 6, back-up ring 5, elastic construction 4 etc. can also be arranged at valve rod
1 right-hand member, so as to realize locking of the valve rod 1 when right position works；Or both ends are carried out
Setting is stated, so that valve rod 1 can realize locking when left position and right position work.
In the above-described embodiments, end shield 3, elastic construction 4, positioning sleeve 7, back-up ring 5, locking
The structures such as structure 6 are both connected to the outside of valve body 2, in other embodiments, these structures
The inside of valve body 2 can be set, as long as can realize that it is acted on.
Valve rod locking mechanism in above-mentioned each embodiment can apply to all kinds of provided with valve rod
In control valve, particularly suitable on banked direction control valves, simple in construction, cost is relatively low, reliability compared with
It is high.
An implementation of 1~6 pair of valve rod locking mechanism of the present invention and control valve below in conjunction with the accompanying drawings
The detailed construction and the course of work of example illustrate：
The valve rod locking mechanism includes valve rod 1, valve body 2, end shield 3, elastic construction 4, back-up ring
5th, locking mechanism 6 and positioning sleeve 7.Valve rod 1 is provided with lug boss 11, slope 12 and groove
13, back-up ring 5 is provided with the inclined-plane 51 that angle with horizontal plane be present, and it is right after valve rod 1 is locked to carry
The thrust of locking mechanism 6；Positioning sleeve 7 is provided with the first location structure 71 and the second location structure
72, the first location structure 71 plays a part of axially position, the second positioning knot to locking mechanism 6
Structure 72 plays a part of radial positioning to locking mechanism 6, prevents locking mechanism 6 from sliding.
Fig. 1 is location drawing when valve rod 1 is in middle position, when valve rod 1 is turned left (with direction as shown
For reference direction) it is mobile when, locking mechanism 6 is pressed close on slope 12, and locking mechanism 6 is held up,
Due to the presence of elastic construction 4, now the past power increasing moved left of valve rod 1, prompts operator
Member has reached the locked position of valve rod 1；
Valve rod 1 continues to turn left when being moved to the first operating position as shown in Figure 5, locking mechanism
6 reach radial dimension of maximum position, and the driving force of operating personnel also increases to maximum；
Valve rod 1 continues to turn left when being moved to the second operating position as shown in Figure 6, locking mechanism
6 enter in the groove 13 of valve rod 1, and the inclined-plane 51 of groove 13 and back-up ring 5 is to locking mechanism 6
Intensifying force is formed, valve rod 1 is locked at the second operating position, need to such as reset valve rod 1, need to be added
Carry an operating physical force turned right, you can locking mechanism 6 is departed from from groove 13, it is so just real
Simple and reliable valve rod locking mechanism is showed.
It should be noted that when valve rod 1 is in the first operating position, and locking is not implemented, such as
Fruit removes the operating physical force that valve rod 1 is turned left, and valve rod 1 can be answered moment in the presence of elastic construction 4
Position is to middle position.Locking can be realized when only locking mechanism 6 is inserted in groove 13.
, can be with by the explanation to valve rod locking mechanism of the present invention and multiple embodiments of control valve
See that valve rod locking mechanism of the present invention and control valve example structure design comparison are rationally and simple,
Operation is also easier, and cost is cheap, widely applicable, and reliability is high.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention and
It is non-that it is limited；It is affiliated although the present invention is described in detail with reference to preferred embodiments
The those of ordinary skill in field should be understood：The embodiment of the present invention can still be entered
Row modification carries out equivalent substitution to some technical characteristics；Without departing from technical solution of the present invention
Spirit, it all should cover among the claimed technical scheme scope of the present invention.
Claims (15)
- A kind of 1. valve rod locking mechanism, it is characterised in that including valve rod (1) and positioning sleeve (7), The valve rod (1) is at least partially disposed in valve body (2), and the positioning sleeve (7) is arranged The valve rod (1) first end and be connected with the valve body (2), valve rod (1) energy It is enough to be moved in the valve body (2) and the positioning sleeve (7), set on the positioning sleeve (7) There is locking mechanism (6), the valve rod (1) is moved to the locking mechanism (6) during predeterminated position The movement of the valve rod (1) can be limited.
- 2. valve rod locking mechanism according to claim 1, it is characterised in that the valve rod (1) side is provided with groove (13), and the groove (13) is used in the valve rod (1) Accommodated when moving to the predeterminated position and limit the locking mechanism (6), to pass through the lock Locking structure (6) limits the movement of the valve rod (1).
- 3. valve rod locking mechanism according to claim 2, it is characterised in that the groove (13) footpath along the valve rod (1) is provided with close to the side of the first end of the valve rod (1) To the lug boss (11) of projection.
- 4. valve rod locking mechanism according to claim 3, it is characterised in that the projection The opposite side relative with the groove (13) in portion (11) is provided with slope (12), described oblique Slope (12) moves closer to the axis of the valve rod (1) from the lug boss (11), so that The valve rod (1) enters described in the forward position of the groove (13) in the locking mechanism (6) Slope (12) is mobile relative to the locking mechanism (6).
- 5. valve rod locking mechanism according to claim 1, it is characterised in that the locking The radial outside of structure (6) is provided with auxiliary locking mechanism, and the auxiliary locking mechanism is used in institute State when locking mechanism (6) is locked to the valve rod (1) and the locking mechanism (6) is applied Add auxiliary coupling mechanism force.
- 6. valve rod locking mechanism according to claim 5, it is characterised in that the auxiliary Locking mechanism includes back-up ring (5), and the back-up ring (5) is arranged on the outer of the positioning sleeve (7) Week, the inwall of the back-up ring (5) are provided with inclined-plane (51), and the inclined-plane (51) causes described Back-up ring (5) is more than away from the valve rod (1) in the internal diameter close to the valve rod (1) first end The internal diameter of first end, the inclined-plane (51) contact with each other with the locking mechanism (6).
- 7. valve rod locking mechanism according to claim 6, it is characterised in that the auxiliary Locking mechanism includes also including the elastic construction (4) being connected with the back-up ring (5), the bullet Property structure (4) be used for the back-up ring (5) apply active force, to realize the back-up ring (5) Auxiliary locking effect to the locking mechanism (6).
- 8. valve rod locking mechanism according to claim 7, it is characterised in that the elasticity Structure (4) includes spring, and the positioning sleeve (7) is provided with close to the end of the valve body (2) Flange, the spring are arranged between the back-up ring (5) and the flange.
- 9. valve rod locking mechanism according to claim 1, it is characterised in that the locking Structure (6) includes locking member, and the locking member is arranged on the side wall of the positioning sleeve (7)； Or the locking mechanism (6) is convex on the inwall of the positioning sleeve (7) including being arranged on Rise.
- 10. valve rod locking mechanism according to claim 9, it is characterised in that described fixed The side wall of position set (7) is provided with through hole, and the locking member is arranged in the through hole and the lock Tight part can move in the through hole.
- 11. valve rod locking mechanism according to claim 10, it is characterised in that described logical The wall in hole can axially and radially be determined the locking mechanism (6) in the through hole Position, to prevent the locking mechanism (6) from departing from the through hole.
- 12. the valve rod locking mechanism according to claim 10 or 11, it is characterised in that institute It is spheroid to state locking member.
- 13. valve rod locking mechanism according to claim 12, it is characterised in that described logical The wall in hole includes shell portion (71) and spheroid section (72), the shell portion (71) It is arranged on the radial outside of the positioning sleeve (7) and for being carried out to the locking mechanism (6) Axially position, the spheroid section (72) are arranged on the radially inner side of the positioning sleeve (7), institute The aperture area for stating spheroid section (72) is less than the cross-sectional area by the centre of sphere of the locking member, The spheroid section (72) is used to carry out radial positioning to the locking mechanism (6).
- 14. valve rod locking mechanism according to claim 1, it is characterised in that also include End shield (3), the end shield (3) are connected with the valve body (2), end shield (3) cover It is located at the outside of the valve rod (1) and the positioning sleeve (7).
- 15. a kind of control valve, it is characterised in that including as described in any one of claim 1~14 Valve rod locking mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610627255.XA CN107676528A (en) | 2016-08-02 | 2016-08-02 | valve rod locking mechanism and control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610627255.XA CN107676528A (en) | 2016-08-02 | 2016-08-02 | valve rod locking mechanism and control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107676528A true CN107676528A (en) | 2018-02-09 |
Family
ID=61134064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610627255.XA Pending CN107676528A (en) | 2016-08-02 | 2016-08-02 | valve rod locking mechanism and control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676528A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2021314B1 (en) * | 2018-07-16 | 2020-01-24 | Noord Jan | Reciprocating piston motor, motor-pump assembly and method for driving a pump |
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| US4966192A (en) * | 1988-10-17 | 1990-10-30 | Trw Steering & Industrial Products Co., Ltd. | Rotary directional control valve |
| US5351714A (en) * | 1992-12-09 | 1994-10-04 | Paul Hammelmann Meschinenfabrik | Safety valve for high-pressure pumps, high-pressure water-jet machines and the like |
| RU2125188C1 (en) * | 1997-04-17 | 1999-01-20 | Государственный научно-исследовательский тракторный институт "НАТИ" | Hydraulic distributor |
| CN201250953Y (en) * | 2008-08-12 | 2009-06-03 | 临海多伊尔机械有限公司 | Positioning structure of valve rod of hydraulic valve |
| CN102434514A (en) * | 2011-11-17 | 2012-05-02 | 常德中联重科液压有限公司 | Hydraulic valve and valve rod positioning device thereof |
| CN203797212U (en) * | 2014-04-08 | 2014-08-27 | 重庆耐德工业股份有限公司 | Pipeline locking quick-disconnecting mechanism |
| CN104179749A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Hydraulic multi-channel valve for agricultural machine |
| CN205938143U (en) * | 2016-08-02 | 2017-02-08 | 徐州徐工筑路机械有限公司 | Valve rod locking structure and control valve |
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2016
- 2016-08-02 CN CN201610627255.XA patent/CN107676528A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4966192A (en) * | 1988-10-17 | 1990-10-30 | Trw Steering & Industrial Products Co., Ltd. | Rotary directional control valve |
| US5351714A (en) * | 1992-12-09 | 1994-10-04 | Paul Hammelmann Meschinenfabrik | Safety valve for high-pressure pumps, high-pressure water-jet machines and the like |
| RU2125188C1 (en) * | 1997-04-17 | 1999-01-20 | Государственный научно-исследовательский тракторный институт "НАТИ" | Hydraulic distributor |
| CN201250953Y (en) * | 2008-08-12 | 2009-06-03 | 临海多伊尔机械有限公司 | Positioning structure of valve rod of hydraulic valve |
| CN102434514A (en) * | 2011-11-17 | 2012-05-02 | 常德中联重科液压有限公司 | Hydraulic valve and valve rod positioning device thereof |
| CN203797212U (en) * | 2014-04-08 | 2014-08-27 | 重庆耐德工业股份有限公司 | Pipeline locking quick-disconnecting mechanism |
| CN104179749A (en) * | 2014-08-19 | 2014-12-03 | 合肥长源液压股份有限公司 | Hydraulic multi-channel valve for agricultural machine |
| CN205938143U (en) * | 2016-08-02 | 2017-02-08 | 徐州徐工筑路机械有限公司 | Valve rod locking structure and control valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2021314B1 (en) * | 2018-07-16 | 2020-01-24 | Noord Jan | Reciprocating piston motor, motor-pump assembly and method for driving a pump |
| US11162516B2 (en) | 2018-07-16 | 2021-11-02 | Jan Noord | Reciprocating piston motor, motor-pump assembly and method for driving a pump |
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Application publication date: 20180209 |