CN205938143U - Valve rod locking structure and control valve - Google Patents
Valve rod locking structure and control valve Download PDFInfo
- Publication number
- CN205938143U CN205938143U CN201620825729.7U CN201620825729U CN205938143U CN 205938143 U CN205938143 U CN 205938143U CN 201620825729 U CN201620825729 U CN 201620825729U CN 205938143 U CN205938143 U CN 205938143U
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- valve rod
- locking mechanism
- positioning sleeve
- locking
- ring
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- 230000007246 mechanism Effects 0.000 claims description 155
- 238000010276 construction Methods 0.000 claims description 23
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 230000000386 athletic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The utility model relates to a valve rod locking structure and control valve, wherein valve rod locking structure includes valve rod (1) and position sleeve (7), valve rod (1) sets up in valve body (2) at least in part, position sleeve (7) set up and stretch out the periphery of the part of valve body (2) and be connected with valve body (2) at valve rod (1), valve rod (1) can remove in valve body (2) and position sleeve (7), the lateral wall of position sleeve (7) is equipped with locking structure (6), valve rod (1) remove when predetermineeing the position locking structure (6) and valve rod (1) each other the top tightly with the removal of restriction valve rod (1). The utility model discloses a lateral wall at the position sleeve sets up locking structure for remove when predetermineeing the position contact and the top is tight each other of locking structure and valve rod when the valve rod, and then the further removal of restriction valve rod. This kind of locking manner simple structure to it is higher to push up tight reliability through the mechanical system to the valve rod, is applicable to the A variety of control valve.
Description
Technical field
The utility model is related 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 is particularly critical.In general banked direction control valves
Each include three working positions：Middle position, left position and right position, and when some occasion banked direction control valves commutate to left position or right position, need
Valve rod is locked at this position, to realize the specific function needed for whole machine.
There are some to be used for locking the device of valve rod in prior art, but mostly locked by the way of threaded,
Poor reliability, and structure is usually relatively complex, relatively costly, therefore find one kind at this stage and be applied to banked direction control valves and structure
Simply, the valve rod locking mechanism that cost is relatively low, reliability is high is each hydraulic technique personnel in the difficult problem facing.
It should be noted that the information being disclosed in the utility model background section is merely intended to increase to this practicality newly
The understanding of the general background of type, and be not construed as recognizing or imply in any form that this information structure has been art technology
Prior art well known to personnel.
Utility model content
The purpose of this utility model is to propose a kind of valve rod locking mechanism and control valve, with relatively simple for structure by one kind
Valve rod locking mechanism realize the locking function of valve rod.
For achieving the above object, the utility model provides a kind of valve rod locking mechanism, including valve rod and positioning sleeve, described
Valve rod is at least partially disposed in valve body, and described positioning sleeve is set in the first end of described valve rod and is connected with described valve body,
Described valve rod can move in described valve body and described positioning sleeve, and described positioning sleeve is provided with locking mechanism, and described valve rod moves
Move and the movement of described valve rod can be limited to locking mechanism described during predeterminated position.
Further, the side of described valve rod is provided with groove, and described groove is used for presetting to described in described stem movement
Accommodate and limit described locking mechanism during position, to limit the movement of described valve rod by described locking mechanism.
Further, the side of the first end near described valve rod for the described groove is provided with the radial protrusion along described valve rod
Lug boss.
Further, the opposite side relative with described groove of described lug boss is provided with slope, and described slope is from described convex
The portion of rising moves closer to the axis of described valve rod, so that described valve rod enters described in the forward position of described groove in described locking mechanism
Slope Facies move for described locking mechanism.
Further, the radial outside of described locking mechanism is provided with auxiliary locking mechanism, and described auxiliary locking mechanism is used for
When described locking mechanism is locked to described valve rod, described locking mechanism is applied with auxiliary coupling mechanism force.
Further, described auxiliary locking mechanism includes back-up ring, and described back-up ring is arranged on the periphery of described positioning sleeve, described
The inwall of back-up ring is provided with inclined-plane, and described inclined-plane makes described back-up ring be more than away from described in the internal diameter near described valve rod first end
The internal diameter of valve rod first end, described inclined-plane is contacted with each other with described locking mechanism.
Further, described auxiliary locking mechanism includes the elastic construction also including being connected, described elasticity with described back-up ring
Structure is used for, to described back-up ring to apply active force, to realize described back-up ring, the auxiliary locking of described locking mechanism being acted on.
Further, described elastic construction includes spring, and described positioning sleeve is provided with flange near the end of described valve body, institute
State spring to be arranged between described back-up ring and described flange.
Further, described locking mechanism includes locking member, and described locking member is arranged on the side wall of described positioning sleeve；Or
Person, described locking mechanism includes the projection being arranged on the inwall of described positioning sleeve.
Further, the side wall of described positioning sleeve is provided with through hole, and described locking member is arranged in described through hole and described
Locking member can move in described through hole.
Further, the wall of described through hole can to described locking mechanism axially and radially carrying out in described through hole
Positioning, to prevent described locking mechanism from departing from described through hole.
Further, described locking member is spheroid.
Further, the wall of described through hole includes shell portion and spheroid section, and described shell portion is arranged on described fixed
The radial outside of position set is simultaneously used for described locking mechanism is carried out axially position, and described spheroid section is arranged on the footpath of described positioning sleeve
To inner side, the aperture area of described spheroid section is less than the cross-sectional area through the centre of sphere of described locking member, and described spheroid section is used for
Radial positioning is carried out to described locking mechanism.
Further, also include end shield, described end shield is connected with described valve body, described end shield is located at described valve rod and institute
State the outside of positioning sleeve.
For achieving the above object, the utility model additionally provides a kind of banked direction control valves, including above-mentioned valve rod locking mechanism.
Based on technique scheme, the utility model passes through setting locking mechanism on positioning sleeve and moves so that working as valve rod
Moving further of valve rod can be limited to locking mechanism during predeterminated position.This setting by an end in valve rod is positioned
Set simultaneously arranges locking mechanism to realize the mode locked on positioning sleeve, and structure is simple, and in valve rod movement to predeterminated position
When can achieve locking, therefore operate more convenient, strong applicability.
Brief description
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used for explaining the utility model, does not constitute to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is the structural representation of the utility model one embodiment of valve rod locking mechanism.
Fig. 2 is the structural representation of valve rod in one embodiment of the utility model valve rod locking mechanism.
Fig. 3 is the structural representation of the utility model one embodiment guide ring of valve rod locking mechanism.
Fig. 4 is the structural representation of positioning sleeve in one embodiment of the utility model valve rod locking mechanism.
Fig. 5 shows for the structure of stem movement in one embodiment of the utility model valve rod locking mechanism to the first operating position
It is intended to.
Fig. 6 shows for the structure of stem movement in one embodiment of the utility model valve rod locking mechanism to the second operating position
It is intended to.
In figure：1- valve rod, 11- lug boss, 12- slope, 13- groove, 2- valve body, 3- end shield, 4- elastic construction, 5- keeps off
Circle, 51- inclined-plane, 6- locking mechanism, 7- positioning sleeve, 71- shell portion, 72- spheroid section, 73- oilhole.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in embodiment is carried out clear, complete
Ground description.Obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.
Based on embodiment of the present utility model, the institute that those of ordinary skill in the art are obtained under the premise of not making creative work
There is other embodiment, broadly fall into the scope of the utility model protection.
In description of the present utility model it is to be understood that term " " center ", " horizontal ", " longitudinal ", "front", "rear",
"left", "right", " on ", D score, " vertical ", " level ", " top ", " bottom ", " interior ", the orientation of instruction such as " outward " or position relationship be
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, be not therefore understood that
It is the restriction to the utility model protection domain.
As shown in figure 1, the structural representation for the utility model one embodiment of valve rod locking mechanism.In this embodiment,
Valve rod locking mechanism includes valve rod 1 and positioning sleeve 7, and described valve rod 1 is at least partially disposed in valve body 2, and valve body 2 has hollow
Structure, in the hollow structure being at least partially disposed at valve body 2 of valve rod 1, valve rod 1 can stretch out valve body 2, and described positioning sleeve 7 is sheathed
Be connected in the first end of described valve rod 1 and with described valve body 2, positioning sleeve 7 is located at the periphery of valve rod 1, and described valve rod 1 can be in institute
State in valve body 2 and described positioning sleeve 7 and move, described positioning sleeve 7 is provided with locking mechanism 6, described valve rod 1 moves to predeterminated position
Shi Suoshu locking mechanism 6 can limit to the movement of valve rod 1, specifically, when valve rod movement is to predeterminated position, locking mechanism
6 are contacted with each other with described valve rod 1 and mutually lean, and locking mechanism 6 can stop moving further of described valve rod 1.
By arranging locking mechanism on positioning sleeve so that locking mechanism can limit when valve rod movement is to predeterminated position
The moving further of valve rod.This by end of valve rod arrange positioning sleeve and on positioning sleeve setting locking mechanism
Realize the mode of locking, structure is simple, and can achieve locking, the therefore side of operation when valve rod movement is to predeterminated position
Just, strong applicability.
In the above-described embodiments, valve rod 1 can contact with each other with locking mechanism 6 and lean, to limit the further of valve rod 1
Mobile, as a preferred implementation, as shown in Fig. 2 the side of described valve rod 1 is provided with groove 13, described groove 13 is used
In accommodating when described valve rod 1 moves to described predeterminated position and limiting described locking mechanism 6, with by described locking mechanism 6
Limit the movement of described valve rod 1.That is, when valve rod 1 moves to predeterminated position, locking mechanism 6 enters in groove 13, and groove is to lock
The mobile formation of locking structure 6 limits, and before being not affected by bigger driving force, locking mechanism 6 cannot run off from groove, valve rod
1 also just cannot continue to move, it is achieved thereby that the locking to valve rod 1.
On the basis of above-described embodiment, as shown in Fig. 2 the side of the first end near described valve rod 1 for the described groove 13
It is provided with the lug boss 11 of the radial protrusion along described valve rod 1, this lug boss 11 is arranged on the side of described valve rod 1, described projection
Portion 11 constitutes a part for described groove 13, and described lug boss 11 enters described groove 13 positioned at described locking mechanism 6
Initiating terminal.
In this embodiment, valve rod 1 is in moving process, before entering in locking mechanism 6 in the groove 13 on valve rod 1,
Valve rod 1 is first passed through lug boss 11 and is come in contact with locking mechanism 6, because lug boss 11 is radially convex with respect to the side of valve rod 1
Rise, therefore operating personnel may feel that arduously when the position promoting valve rod 1 movement to contact to lug boss 11 with locking mechanism 6,
Lug boss 11 can be pointed out operating personnel's locking mechanism 6 will enter in groove 13 and valve rod 1 carried out to operating personnel to point out
Locking.
Further, the opposite side relative with described groove of described lug boss 11 is provided with slope 12, and described slope 12 is certainly
Described lug boss 11 moves closer to the axis of described valve rod 1, and that is, lug boss 11, as the most significant end on slope 12, is also valve rod 1
The terminal moved along slope 12, slope 12 can make described valve rod 1 enter described in the forward position of described groove in described locking mechanism 6
Slope 12 is mobile with respect to described locking mechanism 6, and the change curve that slope 12 is gradually increased can make operating personnel drive valve
Slowly increase driving force during bar 1 motion, and the position driving force in lug boss 11 reaches maximum.
In the both sides of lug boss 11, the angle of the angle of slope 12 and horizontal plane and the falling ramp of groove 13 and horizontal plane
Difference, the axial force that the two produces when mobile to valve rod 1 is also different, and slope 12 is more gentle, so that operating personnel are promoting valve
During bar 1 motion, required thrust slowly increases, and reaches maximum in lug boss 11 position thrust, then slightly firmly can be by valve rod
1 is pushed into the position making locking mechanism 6 enter groove 13, realizes the locking to valve rod 1.
As shown in Fig. 2 the stepped change of the diameter of valve rod 1, with direction as shown as reference, the diameter of valve rod 1 is past from the right side
A left side is sequentially reduced, and valve rod 1 includes at least 4 segmentations, the respectively first segmentation, the second segmentation, the 3rd segmentation and the 4th segmentation.Position
Maximum in the diameter of the first segmentation of low order end, the diameter of this segmentation is identical with the internal diameter of positioning sleeve 7 right-hand member；In positioning sleeve 7
Be provided with the less part of internal diameter, the second segmentation of valve rod 1 with diameter greater than the diameter of the less part of the internal diameter of positioning sleeve 7, in case
The only mobile excess of valve rod 1；3rd segmentation diameter of valve rod 1 is identical with the diameter of the less part of the internal diameter of positioning sleeve 7；Valve rod
The diameter of 1 the 4th segmentation positioned at high order end is less than the diameter of the less part of internal diameter of positioning sleeve 7, to ensure that valve rod 1 exists
Starting stage can smoothly move.Wherein, lug boss 11, slope 12 and groove 13 are arranged in the 4th segmentation.
Locking mechanism 6 needs external force to carry out auxiliary jacking to locking mechanism 6 during the contact with valve rod 1 holds out against, with
Prevent locking mechanism 6 from directly being ejected positioning sleeve 7 by valve rod 1.As a preferred embodiment, the radial direction of described locking mechanism 6
Outside is provided with auxiliary locking mechanism, and described auxiliary locking mechanism is used for when described locking mechanism 6 is locked to described valve rod 1
Described locking mechanism 6 is applied with auxiliary coupling mechanism force.Auxiliary locking mechanism is on the contact top of described valve rod 1 and described locking mechanism 6
Locking mechanism 6 can be applied and the power opposite effect power from valve rod 1 suffered by auxiliary locking mechanism during tight, with
Locking mechanism 6 is prevented to be ejected positioning sleeve 7.
As a preferred embodiment of auxiliary locking mechanism, as shown in figure 3, described auxiliary locking mechanism includes back-up ring
5, described back-up ring 5 is arranged on the periphery of described positioning sleeve 7, and the inwall of described back-up ring 5 is provided with inclined-plane 51, and described inclined-plane 51 makes institute
State back-up ring 5 near described valve rod 1 end internal diameter be more than away from described valve rod 1 end internal diameter, described inclined-plane 51 with described
Locking mechanism 6 contacts, so that inclined-plane 51 can apply thrust to described locking mechanism 6.
On the basis of above preferred embodiment, the periphery of described positioning sleeve 7 is provided with the elasticity knot being connected with described back-up ring 5
Structure 4, described elastic construction 4 is used for described back-up ring 5 to apply active force, auxiliary to described locking mechanism 6 to realize described back-up ring 5
Locking is helped to act on.
Because, in the moving process of valve rod 1, valve rod 1 is contacted with each other with locking mechanism 6 and gradually mutually holds out against, back-up ring 5
Also can be subjected to displacement during the holding out against of locking mechanism 6, and the presence due to elastic construction 4, the athletic meeting of back-up ring 5 is subject to bullet
Property structure 4 effect, operating personnel can obtain the prompting of valve rod 1 motion process according to the amount of force of elastic construction 4, when
When valve rod 1 moves to the position of lug boss 11, the elastic potential energy of elastic construction 4 also reaches maximum.In addition, elastic construction 4 also may be used
For making described back-up ring 5 reset.
As a preferred embodiment of elastic construction 4, described elastic construction 4 includes spring, and described positioning sleeve 7 is near institute
The end stating valve body 2 is provided with flange, and described spring is arranged between described back-up ring 5 and described flange.
As a preferred embodiment of locking mechanism 6, described locking mechanism 6 includes being arranged on the interior of described positioning sleeve 7
Projection on wall, when valve rod 1 moves to predeterminated position, the projection on positioning sleeve 7 just enters in the groove 13 of valve rod 1,
Before not applying bigger thrust, valve rod 1 can be locked by this projection.In this embodiment, positioning sleeve 7 can be using elasticity
Material, so that positioning sleeve 7 can produce slight deformation, to ensure that the projection on positioning sleeve 7 can smoothly enter and leave
Groove 13, the deflection of certain positioning sleeve 7 does not need very greatly, to avoid the impact to locking effect.
As another preferred embodiment of locking mechanism 6, described locking mechanism 6 includes locking member, and described locking member sets
Put the side wall in described positioning sleeve 7, this locking member is the part relatively independent with positioning sleeve 7.
As shown in figure 4, the side wall of described positioning sleeve 7 is provided with through hole, described locking mechanism 6 be arranged in described through hole and
Described locking member can move in described through hole.Locking mechanism 6 can be freely movable in this through hole, but its work simultaneously
Dynamic is also limited, activity that can not be random.The concrete mode that locking mechanism 6 is arranged on positioning sleeve 7 can also have other
Select, as long as being capable of its purpose.Such as, locking mechanism 6 can be connected to the madial wall of positioning sleeve 7 by spring
On, in initial moving process, spring is in compressive state, and when valve rod 1 moves to groove 13 position, spring stretches out, and drives
Locking mechanism 6 enters in groove 13, to realize the locking to valve rod 1, because locking mechanism 6 is located in positioning sleeve 7 in the program
Portion, thus without the problem that is ejected, is also no need for arranging back-up ring 5 and elastic construction 4.
Preferably, the wall of described through hole can to described locking mechanism 6 axially and radially carrying out in described through hole
Positioning, to prevent described locking mechanism 6 from departing from described through hole.
In each embodiment above-mentioned, described locking mechanism 6 is preferably spheroid, and the flexibility ratio of spheroid is higher, is easy to reality
Now lock purpose.
As a schematic embodiment, the wall of described through hole includes shell portion 71 and spheroid section 72, described circle
Column body segment 71 is arranged on the radial outside of described positioning sleeve 7 and for carrying out axially position, described spheroid to described locking mechanism 6
The radially inner side that section 72 is arranged on described positioning sleeve 7, the aperture area of described spheroid section 72 be less than described locking member through ball
The cross-sectional area of the heart, to ensure that locking member will not drop by the opening of spheroid section 72, described spheroid section 72 is used for described locking
Structure 6 carries out radial positioning.
Certainly, in addition to the above described embodiments, the structure that locking mechanism 6 can be axially and radially located is also very
Many, as long as being capable of its purpose.
As shown in figure 4, being additionally provided with oilhole 73 on positioning sleeve 7, this oilhole 73 is used for the stream of lubricating oil in valve rod locking mechanism
Logical.When valve rod 1 moves back and forth it is possible to closing chamber occurs, such as, as shown in fig. 6, under this motion state, positioning sleeve 7
The chamber on right side is the chamber of approximate closing, if there being the presence of lubricating oil in this closing chamber, may form prevention valve rod 1 and continuing
The pressure that reforwarding is moved, and after being provided with oilhole 73, lubricating oil can be flowed out by oilhole 73, it is to avoid the motion to valve rod 1 is made
Become impact.Certainly, oilhole 73 can arrange two or more.
In addition, valve rod locking mechanism can also include end shield 3, described end shield 3 is connected with described valve body 2, and described end shield 3 covers
It is located at the outside of described valve rod 1 and described positioning sleeve 7.Certainly, above-mentioned locking mechanism 6, back-up ring 5 and elastic construction 4 are also provided with
In end shield 3.End shield 3 can prevent valve rod 1, positioning sleeve 7, back-up ring 5 and elastic construction 4 etc. to be subject to the dirt of dust or oil gas
Dye, affects operating reliability.
In the embodiment shown in fig. 1, to the improvement in the structure of valve rod 1 and positioning sleeve 7, locking mechanism 6, back-up ring
5th, elastic construction 4 etc. is all in the left end of valve rod 1, it is possible to achieve locking when valve rod 1 works in left position；In addition, to valve rod 1
Structure on improvement and positioning sleeve 7, locking mechanism 6, back-up ring 5, elastic construction 4 etc. can also be arranged at the right side of valve rod 1
End, thus realize locking when valve rod 1 works in right position；Or two ends all carry out above-mentioned setting, so that valve rod 1 is on left position and the right side
All it is capable of during the work of position locking.
In the above-described embodiments, the structure such as end shield 3, elastic construction 4, positioning sleeve 7, back-up ring 5, locking mechanism 6 is both connected to
The outside of valve body 2, in other embodiments, these structures can also arrange the inside of valve body 2, as long as be capable of its effect being
Can.
Valve rod locking mechanism in each embodiment above-mentioned can apply in all kinds of control valves being provided with valve rod, especially suitable
Share on banked direction control valves, structure is simple, and cost is relatively low, and reliability is higher.
The detailed knot of an embodiment of 1～6 pair of the utility model valve rod locking mechanism and control valve below in conjunction with the accompanying drawings
Structure and the course of work illustrate：
This valve rod locking mechanism includes valve rod 1, valve body 2, end shield 3, elastic construction 4, back-up ring 5, locking mechanism 6 and positioning sleeve
7.Valve rod 1 is provided with lug boss 11, slope 12 and groove 13, and back-up ring 5 is provided with the inclined-plane 51 that there is angle with horizontal plane, carries
Thrust to locking mechanism 6 after valve rod 1 locking；Positioning sleeve 7 is provided with the first location structure 71 and the second location structure 72, and first
Location structure 71 plays the effect of axially position to locking mechanism 6, and the second location structure 72 plays radial positioning to locking mechanism 6
Effect, prevent locking mechanism 6 landing.
Fig. 1 is in location drawing during middle position for valve rod 1, when valve rod 1 turns left (with direction as shown as reference direction) movement,
Locking mechanism 6 is pressed close on slope 12, and locking mechanism 6 is held up, and due to the presence of elastic construction 4, now valve rod 1 is toward moving left
Power increases, and points out operating personnel to reach the locked position of valve rod 1；
Valve rod 1 continues toward when moving left to first operating position as shown in Figure 5, and locking mechanism 6 reaches radial dimension of
Maximum position, the driving force of operating personnel also increases to maximum；
Valve rod 1 continues toward when moving left to second operating position as shown in Figure 6, and locking mechanism 6 enters the groove of valve rod 1
In 13, groove 13 forms intensifying force with the inclined-plane 51 of back-up ring 5 to locking mechanism 6, valve rod 1 is locked at the second operating position, such as
Need to be resetted valve rod 1, need to load an operating physical force turned right, you can so that locking mechanism 6 is departed from from groove 13, be so achieved that
Simple and reliable valve rod locking mechanism.
It should be noted that when valve rod 1 is in the first operating position, and unrealized locking, if removing what valve rod 1 was turned left
Operating physical force, in the presence of elastic construction 4, valve rod 1 meeting momentary reset is to middle position.When only locking mechanism 6 being inserted in groove 13
Can realize locking.
By the explanation of the multiple embodiments to the utility model valve rod locking mechanism and control valve it can be seen that this practicality
Novel valve stem locking mechanism and control valve example structure design comparison are rationally and simple, and operation is also easier, with low cost,
Widely applicable, reliability is high.
Finally it should be noted that：Above example is only in order to illustrate the technical solution of the utility model rather than it is limited
System；Although being described in detail to the utility model with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Still specific embodiment of the present utility model can be modified or some technical characteristics are carried out with equivalent replacing
Change；Without deviating from the spirit of technical solutions of the utility model, it all should cover the technical scheme being claimed in the utility model
In the middle of scope.
Claims (15)
1., it is characterised in that including valve rod (1) and positioning sleeve (7), described valve rod (1) is at least partly for a kind of valve rod locking mechanism
Be arranged in valve body (2), described positioning sleeve (7) is set in the first end of described valve rod (1) and is connected with described valve body (2),
Described valve rod (1) can be moved in described valve body (2) and described positioning sleeve (7), and described positioning sleeve (7) is provided with locking mechanism
(6), described valve rod (1) is moved and the movement of described valve rod (1) can be limited to locking mechanism (6) described during predeterminated position
System.
2. valve rod locking mechanism according to claim 1 is it is characterised in that the side of described valve rod (1) is provided with groove
(13), described groove (13) is used for accommodating when described valve rod (1) moves to described predeterminated position and limiting described locking mechanism
(6), to limit the movement of described valve rod (1) by described locking mechanism (6).
3. valve rod locking mechanism according to claim 2 is it is characterised in that described groove (13) is near described valve rod (1)
The side of first end be provided with the lug boss (11) of the radial protrusion along described valve rod (1).
4. valve rod locking mechanism according to claim 3 it is characterised in that described lug boss (11) with described groove
(13) relative opposite side is provided with slope (12), and described slope (12) moves closer to described valve rod (1) from described lug boss (11)
Axis so that described valve rod (1) described locking mechanism (6) enter described groove (13) slope described in forward position (12) phase
Mobile for described locking mechanism (6).
5. valve rod locking mechanism according to claim 1 is it is characterised in that the radial outside of described locking mechanism (6) sets
There is auxiliary locking mechanism, described auxiliary locking mechanism is used for when described locking mechanism (6) is locked to described valve rod (1) pair
Described locking mechanism (6) applies auxiliary coupling mechanism force.
6. valve rod locking mechanism according to claim 5 is it is characterised in that described auxiliary locking mechanism includes back-up ring (5),
Described back-up ring (5) is arranged on the periphery of described positioning sleeve (7), and the inwall of described back-up ring (5) is provided with inclined-plane (51), described inclined-plane
(51) described back-up ring (5) is made to be more than in the internal diameter near described valve rod (1) first end interior away from described valve rod (1) first end
Footpath, described inclined-plane (51) and described locking mechanism (6) contact with each other.
7. valve rod locking mechanism according to claim 6 it is characterised in that described auxiliary locking mechanism include also including with
The elastic construction (4) that described back-up ring (5) connects, described elastic construction (4) is used for described back-up ring (5) to apply active force, with reality
Existing described back-up ring (5) acts on to the auxiliary locking of described locking mechanism (6).
8. valve rod locking mechanism according to claim 7 is it is characterised in that described elastic construction (4) includes spring, described
Positioning sleeve (7) is provided with flange near the end of described valve body (2), described spring be arranged on described back-up ring (5) and described flange it
Between.
9. valve rod locking mechanism according to claim 1 is it is characterised in that described locking mechanism (6) includes locking member, institute
State the side wall that locking member is arranged on described positioning sleeve (7)；Or, described locking mechanism (6) includes being arranged on described positioning sleeve (7)
Inwall on projection.
10. valve rod locking mechanism according to claim 9 it is characterised in that the side wall of described positioning sleeve (7) be provided with logical
Hole, described locking member is arranged in described through hole and described locking member can move in described through hole.
11. valve rod locking mechanisms according to claim 10 are it is characterised in that the wall of described through hole can be to described lock
Locking structure (6) axially and radially being positioned in described through hole, to prevent described locking mechanism (6) from departing from described through hole.
The 12. valve rod locking mechanisms according to claim 10 or 11 are it is characterised in that described locking member is spheroid.
13. valve rod locking mechanisms according to claim 12 are it is characterised in that the wall of described through hole includes shell portion
(71) and spheroid section (72), described shell portion (71) is arranged on the radial outside of described positioning sleeve (7) and for described lock
Locking structure (6) carries out axially position, and described spheroid section (72) is arranged on the radially inner side of described positioning sleeve (7), described spheroid section
(72) aperture area is less than the cross-sectional area through the centre of sphere of described locking member, and described spheroid section (72) is used for described locking
Structure (6) carries out radial positioning.
14. valve rod locking mechanisms according to claim 1 it is characterised in that also including end shield (3), described end shield (3) with
Described valve body (2) connects, and described end shield (3) is located at described valve rod (1) and the outside of described positioning sleeve (7).
A kind of 15. control valves are it is characterised in that include the valve rod locking mechanism as described in any one of claim 1～14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620825729.7U CN205938143U (en) | 2016-08-02 | 2016-08-02 | Valve rod locking structure and control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620825729.7U CN205938143U (en) | 2016-08-02 | 2016-08-02 | Valve rod locking structure and control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205938143U true CN205938143U (en) | 2017-02-08 |
Family
ID=57924965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620825729.7U Expired - Fee Related CN205938143U (en) | 2016-08-02 | 2016-08-02 | Valve rod locking structure and control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205938143U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676528A (en) * | 2016-08-02 | 2018-02-09 | 徐州徐工筑路机械有限公司 | valve rod locking mechanism and control valve |
| CN110725826A (en) * | 2018-07-16 | 2020-01-24 | 简·诺德 | Reciprocating piston motor, motor-pump assembly and method of driving a pump |
-
2016
- 2016-08-02 CN CN201620825729.7U patent/CN205938143U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676528A (en) * | 2016-08-02 | 2018-02-09 | 徐州徐工筑路机械有限公司 | valve rod locking mechanism and control valve |
| CN110725826A (en) * | 2018-07-16 | 2020-01-24 | 简·诺德 | Reciprocating piston motor, motor-pump assembly and method of driving a pump |
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Legal Events
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|---|---|---|---|
| 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: 20170208 |