CN104747522B - Used with tractor distributor provided with balance guide rod - Google Patents
Used with tractor distributor provided with balance guide rod Download PDFInfo
- Publication number
- CN104747522B CN104747522B CN201510140637.5A CN201510140637A CN104747522B CN 104747522 B CN104747522 B CN 104747522B CN 201510140637 A CN201510140637 A CN 201510140637A CN 104747522 B CN104747522 B CN 104747522B
- Authority
- CN
- China
- Prior art keywords
- valve
- rod
- valve rod
- bonnet
- guide rod
- 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.)
- Active
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
- F15B13/022—Flow-dividers; Priority valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a kind of used with tractor distributor provided with balance guide rod, including valve body, protecgulum and bonnet；Valve rod is provided with valve body, the first end of valve rod is inserted within bonnet, the second end of valve rod is inserted within protecgulum；Handle is provided with protecgulum；One end of handle is inserted within protecgulum and pulls axial linear movement of the valve rod along valve rod by pulling handle with the clamping of valve rod phase；The other end of handle is stretched out in outside protecgulum in order to which craft is pulled；Offered on the end face of one end of the remote valve body of bonnet and a balance guide rod is provided with the through hole for penetrating bonnet, through hole；Balance guide rod being capable of axially moving along a straight line along valve rod in through hole.The present invention provided with balance guide rod used with tractor distributor, the problem of there is to solve valve rod automatic reverse during back pressure, improve distributor functional reliability it is high.
Description
Technical field
The present invention relates to a kind of distributor, especially a kind of used with tractor distributor provided with balance guide rod.
Background technology
Hydraulic Elements are big with its power, and mounting arrangements are easy, it is easy to controlled, and easy to operate comfortable, fault rate is low, is easy to dimension
The advantages of shield, it is very suitable for that structural form is changeable, the application of the severe agricultural machinery of condition of work.In decades, hydraulic technique
Not only in agricultural machinery, lathe, engineering machinery, building machinery, space flight and aviation equipment etc. is more and more applied, and is formd
Huge market.
Tendency of Agricultural Machinery in China is to use Hydraulic Elements, and at most, kind is minimum, and price is minimum, therefore is most to develop for quantity
The industry field of potentiality.A wherein important factor be hydraulic technique on agricultural machinery using also far from enough.This is due to me
State's peasant's purchasing power is low, limits application of the hydraulic technique on agricultural machinery.Improved using the agri-machinery quality class of hydraulic technique,
Also up, peasant is beyond affordability, and such main computer boxes quality and technology content are difficult to be greatly improved for price.Therefore, main frame
Factory has to reduce configuration, and change configuration makes main computer boxes quality and technology content all decline to exchange market for.It is Chinese at present
The Hydraulic Elements of the hydraulic system domestic production of less than 180 horsepowers tractors, substantially meet the market demand.But quality is uneven
Weighing apparatus, service life is short, and particularly hydraulic lock and jump position faults frequent occurs.
Such as Figure 10 and Figure 11, in the prior art, a seal face with bonnet is usually set between bonnet and valve body
The asbestos pad 27 of same shape and size, is padded between bonnet and valve body, to realize the sealing between bonnet and valve body.However,
Asbestos are to have been accepted as a kind of carcinogen in the world, and the problem of harm staff is healthy is there are using asbestos pad 27.
The characteristics of asbestos pad has immersion oil and permeability.After use after a while, asbestos pad 27 can be impregnated with by fluid, become easily infected by
Dust.After prolonged dust contamination, the sealing station of asbestos pad 27 is just messy, have impact on machine overall appearance it is attractive in appearance
Property.After the long-time immersion oil of asbestos pad 27, the sealing effectiveness of asbestos pad 27 will decline, and or so general half a year is accomplished by changing once
Asbestos pad, just can guarantee that good sealing effectiveness.
Such as Figure 10, spring base, back-moving spring are provided with the cavity of bonnet, the left end of valve rod stretches to the cavity of bonnet
It is interior.Due to being sealed between valve rod and valve body, the cavity of bonnet is connected with oil back chamber.If oily back pressure, because valve rod is left
Side is less than right side by the area of oil pressure by oil pressure area, there is the difference in areas of a compression area, is acted in bonnet described
The power to the left of valve rod is smaller than power to the right, now hydraulic oil will to valve rod produce a thrust to the right, if back pressure compared with
Greatly, then valve rod can be caused to move right, valve rod automatic reverse is caused, is prone to accidents.
The content of the invention
The present invention is that there is provided a kind of drawing provided with balance guide rod to avoid weak point present in above-mentioned prior art
Machine distributor, to solve the problem of valve rod back pressure automatic reverse of existing distributor, the easy permeability of asbestos pad and pollution.
The present invention uses following technical scheme to solve technical problem.
Used with tractor distributor provided with balance guide rod, it is structurally characterized in that, including valve body 1, protecgulum 2 and bonnet 3；It is described
Valve rod 4 is provided with valve body 1, the first end of the valve rod 4 is inserted within the bonnet 3, and the second end of the valve rod 4 is stretched into
Within the protecgulum 2；Handle 5 is provided with the protecgulum 2；One end of the handle 5 be inserted within the protecgulum 2 and with
The phase clamping of valve rod 4 is with by pulling axial linear movement of the pulling of handle 5 valve rod 4 along valve rod 4；The handle 5
The other end stretch out in outside the protecgulum 2 in order to by hand pull；
The through hole 301 for penetrating the bonnet 3, institute are offered on the end face of one end of the remote valve body 1 of the bonnet 3
State and a balance guide rod 6 is provided with through hole 301；The first end of the balance guide rod 6 is stretched out in outside the bonnet 3, described
Second end of balance guide rod 6 is inserted within the bonnet 3 and is flexibly connected with the first end of the valve rod 4；The balance is led
Bar 6 being capable of axially moving along a straight line along the valve rod 4 in the through hole 301.
The design feature of the used with tractor distributor provided with balance guide rod of the present invention is lain also in：
Second end of the balance guide rod 6 is provided with a boss 601, and the left part of the valve rod 4 is provided with an end
Portion's screw 7, the right-hand member of the end screw 7 is inserted in the stem cavity 401 of the left part of the valve rod 4；The end spiral shell
The left part of nail 7 is connected within the groove provided with one and the shape identical groove of boss 601, the boss 601,
So that being flexibly connected between the balance guide rod 6 and the valve rod 4.
It is provided with a seal groove, the seal groove and sets on the end face being engaged on the bonnet 3 with the valve body 1
It is equipped with a special-shaped seal ring 23.
Compared with the prior art, the present invention has the beneficial effect that：
The used with tractor distributor provided with balance guide rod of the present invention, including valve body, protecgulum and bonnet；It is provided with valve body
Valve rod, the first end of valve rod is inserted within bonnet, and the second end of valve rod is inserted within protecgulum；Handle is provided with protecgulum；
One end of handle is inserted within protecgulum and pulls valve rod along the axially straight of valve rod by pulling handle with the clamping of valve rod phase
Line is moved；The other end of handle is stretched out in outside protecgulum in order to which craft is pulled；On the end face of one end of the remote valve body of bonnet
Offer and a balance guide rod is provided with the through hole for penetrating bonnet, through hole；Balancing guide rod can be along valve rod axially logical
Moved along a straight line in hole.
Cover to be provided with the end face being engaged with valve body within a seal groove, seal groove afterwards and be provided with profiled seal
Circle.
The used with tractor distributor provided with balance guide rod of the present invention, with following technological merit.
(1) when there is back pressure, due to being provided with balance guide rod so that for valve rod to the left and to the right by oil pressure area
It is identical, therefore valve rod is in stress balance state, so solve left and right compression area in the prior art do not cause etc. valve rod by
The problem of causing automatic reverse to thrust to the right.
(2) set in the mating surface being engaged between bonnet and valve body and phase is set in profiled seal groove, profiled seal groove
The special-shaped seal ring answered.It is radial seal mode due to being sealed by the way of sealing ring is set within seal groove, sealing effect
Fruit is more preferably.
The used with tractor distributor provided with balance guide rod of the present invention, is asked with valve rod automatic reverse when can solve back pressure
The advantages of topic, functional reliability of raising distributor.
Brief description of the drawings
Fig. 1 is the front view provided with the used with tractor distributor for balancing guide rod of the invention.
Fig. 2 is the left view provided with the used with tractor distributor for balancing guide rod of the invention.
Fig. 3 is the right view provided with the used with tractor distributor for balancing guide rod of the invention.
Fig. 4 is the upward view provided with the used with tractor distributor for balancing guide rod of the invention.
The A-A sectional views that Fig. 5 is Fig. 3 (distributor is in middle position state).
Fig. 6 is Fig. 3 A-A sectional views (distributor is in running order).
Fig. 7 is the front view of the valve element of the check valve of the used with tractor distributor provided with balance guide rod of the present invention.
Fig. 8 is the front view of the special-shaped seal ring of the used with tractor distributor provided with balance guide rod of the present invention.
Fig. 9 is the left view of the special-shaped seal ring of the used with tractor distributor provided with balance guide rod of the present invention.
Figure 10 is the sectional view of the used with tractor distributor provided with balance guide rod of prior art.
Figure 11 is the front view of the asbestos pad of the used with tractor distributor provided with balance guide rod of prior art.
Figure 12 is the front view of the valve element of the check valve of the used with tractor distributor provided with balance guide rod of prior art.
Label in 1~accompanying drawing of accompanying drawing 12：1 valve body, 101 first oil ducts, 102 second oil ducts, 103 unidirectional valve pockets, 104 oil-feeds
Chamber, 2 protecgulums, 3 bonnets, 301 through holes, 4 valve rods, 401 stem cavities, 5 handles, 6 balance guide rods, 601 boss, 7 end screws, 8
First spring base, 9 second springs seat, 10 back-moving springs, 11 positioning sleeves, 12 lock-screws, 13 pressure regulating screws, 14 locking springs,
15 localization handspikes, 1501 type conical bench, 16 small balls, 17 positioning guide brackets, 18 guide rod seats, 19 guide rods, 20 pressure springs, 21 cone valves
Core, 22 elongated holes, 23 special-shaped seal rings, 24 check valve back-moving springs, 25 nonreturn valve cores, 2501 front end guide ways, 2502 middle parts
Connector, 2503 tail ends, 2,504 2 grades of guide ways, 2505 compensating grooves, 26 check valve steel balls, 27 asbestos pads.
Below by way of embodiment, and with reference to accompanying drawing, the invention will be further described.
Embodiment
Referring to accompanying drawing 1-9, the used with tractor distributor provided with balance guide rod of the invention, including valve body 1, protecgulum 2 and after
Lid 3；Valve rod 4 is provided with the valve body 1, the first end of the valve rod 4 is inserted within the bonnet 3, the of the valve rod 4
Two ends are inserted within the protecgulum 2；Handle 5 is provided with the protecgulum 2；One end of the handle 5 is inserted into the protecgulum 2
Within and with the phase clamping of valve rod 4 to pull axial linear movement of the valve rod 4 along valve rod 4 by pulling the handle 5；Institute
The other end for stating handle 5 is stretched out in outside the protecgulum 2 in order to which craft is pulled；
The through hole 301 for penetrating the bonnet 3, institute are offered on the end face of one end of the remote valve body 1 of the bonnet 3
State and a balance guide rod 6 is provided with through hole 301；The first end of the balance guide rod 6 is stretched out in outside the bonnet 3, described
Second end of balance guide rod 6 is inserted within the bonnet 3 and is flexibly connected with the first end of the valve rod 4；The balance is led
Bar 6 being capable of axially moving along a straight line along the valve rod 4 in the through hole 301.
The used with tractor distributor provided with balance guide rod of the present invention, due to being provided with balance guide rod, and balance guide rod with
Valve rod connection prevents the generation of card valve or leakage of oil problem caused by coaxiality error using being flexibly connected.When there is back pressure
When, due to being provided with balance guide rod, balance guide rod between valve rod due to being connected, and a part and balance equivalent to valve rod are led
Bar be located at bonnet left end so that for valve rod to the left with it is identical by oil pressure area to the right, therefore valve rod be in stress balance
State, not etc. does not cause valve rod to be caused automatic reverse by thrust to the right so solving left and right compression area in the prior art
Problem.
Such as outline drawings of the Fig. 1-4 for the distributor of the present invention, 5-6 is A-A sectional views.Actuator port A is provided with valve body
With B, oil inlet P and oil return inlet T, shown oil inlet P is communicated with oil suction chamber 104, for providing pressure oil for distributor.Pass through figure
5 and Fig. 6, it can be seen that distributor valve rod is in change when middle position and commutation two states.Fig. 7 is the main view of the valve element of check valve
Figure.Fig. 8, Fig. 9 are the structure chart of special-shaped seal ring.
Second end of the balance guide rod 6 is provided with a boss 601, and the left part of the valve rod 4 is provided with an end
Portion's screw 7, the right-hand member of the end screw 7 is inserted in the stem cavity 401 of the left part of the valve rod 4；The end spiral shell
The left part of nail 7 is connected within the groove provided with one and the shape identical groove of boss 601, the boss 601,
So that being flexibly connected between the balance guide rod 6 and the valve rod 4.
It is provided with a seal groove, the seal groove and sets on the end face being engaged on the bonnet 3 with the valve body 1
It is equipped with a special-shaped seal ring 23.
In the bonnet 3, the first spring base 8, the second bullet are arranged with the outer peripheral face of the valve rod 4 and end screw 7
Spring abutment 9, back-moving spring 10 and positioning sleeve 11, first spring base 8, second spring seat 9 and positioning sleeve 11 are from left to right successively
Set, the back-moving spring 10 is arranged between first spring base 8 and second spring seat 9, the right-hand member of the positioning sleeve 11
Portion is abutted against with the valve body 1, and the left part of the second spring seat 9 and positioning sleeve 11 is abutted against, and valve rod 4 can be described fixed
Linear motion is so as to compress or loosen the back-moving spring 10 in position set 11；It is arranged inside the end screw 7 along institute
State and set successively from left to right in the cavity of end screw 7 described in the axial penetration of end screw 7, the cavity of the end screw 7
Put lock-screw 12, pressure regulating screw 13, locking spring 14 and localization handspike 15；On the outer peripheral face of the left part of localization handspike 15
Locking spring 14 is arranged with, the right-hand member of the localization handspike 15 is inserted in the stem cavity 401, and the localization handspike 15
Right part outer peripheral face on be provided with type conical bench 1501；
The radial hole along valve rod 4 described in the radial penetration of the valve rod 4 is provided with the side face of the valve rod 4, it is described
Small ball 16 is provided with radial hole, the small ball 16 and the type conical bench 1501 of the right part of the localization handspike 15 offset
Connect；A positioning guide bracket 17 is provided with the stem cavity, the positioning guide bracket 17 is located at a left side for the localization handspike 15
A guide rod seat 18 is provided with side, the inner chamber of the positioning guide bracket 17, the left part of the guide rod seat 18 is fixedly installed one
Individual guide rod 19, the right part that the guide rod 19 extends through after the localization handspike 15 with the pressure regulating screw 13 to the left offsets
Connect；The right-hand member of the guide rod seat 18 is provided with pressure spring 20, and the right side of the guide rod seat 18 is additionally provided with a poppet valve core 21,
The pressure spring 20 is located between the guide rod seat 18 and the poppet valve core 21；The right part of the poppet valve core 21 can be inserted in
In the elongated hole 22 extended along the direction of valve rod 4 and can block the elongated hole 22, with control the stem cavity 401 and
Connection and disconnection between the elongated hole 22；The right-hand member of the elongated hole 22 is connected with the first oil duct 101 of valve body 1.
In the distributor of the present invention, valve rod has two kinds of working conditions, and one is middle position state, and two be commutation states.
Such as Fig. 5, valve rod is in middle position state, and now valve rod is not acted.When valve rod is in middle position state, now valve rod does not have
Have between action, the oil duct 101 of oil suction chamber 104 and first by valve rod block without connect.Check valve is not acted, check valve steel ball
Positioned at the bottom of valve rod ball groove, nonreturn valve core is pinned, also not connected between the first oil duct 101 and the second oil duct 102.Now, by
In valve rod middle position, back-moving spring is not compressed, inelastic to valve rod.
Such as Fig. 6, it is between commutation states, the oil duct 101 of oil suction chamber 104 and first and is connected after valve rod is to left movement,
Hydraulic oil enters the first oil duct 101 from oil suction chamber 104；Now valve rod is by the upward jack-up of check valve steel ball, and check valve steel ball is promoted
Nonreturn valve core is moved upwards, and check valve is opened, and the first oil duct 101 is connected with the second oil duct 102.Now, due to nonreturn valve core
Upper to be provided with two grades of guide ways, hydraulic oil flows into the second oil duct by the compensating groove of two grades of guide ways, and check valve can be normally real
The one-way flow of existing fluid.
During commutation states, due to valve rod movement, the distance between the first spring base and second spring seat reduce, back-moving spring
It is caught in after being compressed now small ball movement in the ball groove on reversing cover inwall.Now, localization handspike is moved to the left, locking spring
It is positioned push rod compression and holds out against localization handspike, the type conical bench of localization handspike right-hand member tightly withstands steel ball so that steel ball card
Tightly in the ball groove on reversing cover inwall, now valve rod is in the presence of small ball, locking spring, and position is locked in commutation shape
State.If without other external force, such as oil pressure changes or pulls handle by hand, and valve rod will be locked, and be fixed on commutation states.
During hand-reset, handle is pulled by staff, valve rod is drawn to the right, by small ball from the ball on reversing cover inwall
Pulled out in groove, valve rod resets.
When automatically reseting, the oil pressure increase in oil suction chamber 104.When the oil pressure in oil suction chamber 104 is to setting value, now enter
Hydraulic oil in oil pocket 104 will be acted on poppet valve core by elongated hole, and the poppet valve core is promoted to the left, and poppet valve core is to moving to left
Dynamic, hydraulic oil enters the right side of valve-rod cavity, and hydraulic oil pushes up positioning guide bracket to the left, and positioning guide bracket is moved to the left again that top positioning is pushed away to the left
Bar, now because localization handspike is moved to the left, small ball is fallen due to Action of Gravity Field out of ball groove, and valve rod is from locking state solution
Remove, now in the presence of back-moving spring, valve rod moves right realization and automatically reset automatically.
Determine automatically as a result of what the components such as positioning sleeve, locking spring, positioning guide bracket, localization handspike, poppet valve core were constituted
Position resetting means so that distributor of the invention realizes the auto-reset function of valve rod by controlling the pressure of oil suction chamber.
By adjusting pressure spring, the adjustable pressure value that automatically resets.
In the distributor of the present invention, profiled seal groove is set in the mating surface being engaged between bonnet and valve body, such as schemed
Corresponding special-shaped seal ring is set in 8-9, profiled seal groove.Due to close by the way of sealing ring is set within seal groove
Envelope, is radial seal mode, sealing effectiveness is more preferable.Sealing ring uses quality of rubber materials, it is to avoid use asbestos material harmful to human
Healthy the problem of.Further, since within the sealing surface that sealing ring be located at bonnet and valve body two are superimposed with each other, not exposing machine
Surface, therefore in the absence of leakage of oil be infected with dust the problem of, while solve using asbestos pad material due to permeability be infected with ash
Dirt and cause outward appearance it is ugly the problem of.
Be provided with the valve body 1 in unidirectional valve pocket 103, the unidirectional valve pocket 103 be provided with check valve back-moving spring 24,
Nonreturn valve core 25 and check valve steel ball 26；
The nonreturn valve core 25 includes front end guide way 2501, middle connection body 2502 and tail end 2503；At the middle part
It is provided with two grades of guide ways 2504, two grades of guide ways 2504 and is provided with along institute on the outer peripheral face of connector 2502
State the compensating groove 2505 for axially penetrating through two grades of guide ways 2504 of nonreturn valve core 25.
The compensating groove is square groove.When valve rod moves right to working position, steel ball is moved up, on nonreturn valve core
Rise, the sealing between the tapered portion 2506 and valve of the tail end bottom of nonreturn valve core is released, the first oil duct 101 and the second oil duct
102 are connected, and the front end guide way of nonreturn valve core lower end still keeps directly contacting and sealing with valve.The structure of nonreturn valve core
As shown in Figure 7.
In addition to front end guide way is directly contacted with check valve cavity wall, the outer peripheral face of two grades of guide ways of middle connection body
Still with the internal face joint of unidirectional valve pocket.Now, the hydraulic oil in the first oil duct flows into the second oil duct by compensating groove
102, fluid is not interfered with the first oil duct 101 and the second directly circulation of oil duct 102.It is additionally, since the valve element of check valve
Lower end and middle part are contacted with valve pocket inwall.Even if when hydraulic oil has pressure oscillation, the top of valve element also will not be with oil
The fluctuation of pressure and double swerve.So, asking for the friction aggravation between front end guide way and unidirectional valve pocket, sealing gasket is avoided
Topic, the problem of front end guide way periphery abrasion that will not also occur the valve element of check valve is crushed easily with sealing gasket, is extended
The service life of check valve, it is thus also avoided that seal failure and cause and oil leakage phenomenon occur, ensure that the control accuracy of valve,
Improve the functional reliability of distributor.
Due to being provided with two grades of guide ways in the middle connection body of nonreturn valve core, provided for check valve high-pressure opening state
Stable guidance quality, it is to avoid worn and torn between valve pocket under the fluctuation of oil pressure valve element lower end, it is thus also avoided that seal failure and
Cause and oil leakage phenomenon occur, improve the service life and functional reliability of check valve so that check valve has good height steady
It is qualitative.Two grades of guide ways need to be only processed in middle connection body, are unloaded while being processed on two grades of guide ways in processing
Lotus groove, easy processing simple in construction.Due to being provided with compensating groove on two grades of guide ways, it may be such that hydraulic oil from the first oil duct
Interior to flow into the second oil duct by compensating groove, check valve can normally realize the one-way flow of fluid.
The used with tractor distributor provided with balance guide rod of the present invention, with following feature.
(1) when there is back pressure, due to being provided with balance guide rod so that for valve rod to the left and to the right by oil pressure area
It is identical, therefore valve rod is in stress balance state, so solve left and right compression area in the prior art do not cause etc. valve rod by
The problem of causing automatic reverse to thrust to the right.
(2) as a result of the automatic of the component compositions such as positioning sleeve, locking spring, positioning guide bracket, localization handspike, poppet valve core
Position reset device so that distributor of the invention realizes the auto-reset function of valve rod by controlling the pressure of oil suction chamber.
(3) set in the mating surface being engaged between bonnet and valve body and phase is set in profiled seal groove, profiled seal groove
The special-shaped seal ring answered.It is radial seal mode due to being sealed by the way of sealing ring is set within seal groove, sealing effect
Fruit is more preferably.
(4) it is check valve high-pressure opening state due to being provided with two grades of guide ways in the middle connection body of nonreturn valve core
There is provided stable guidance quality, it is to avoid worn and torn under the fluctuation of oil pressure between valve pocket valve element lower end, it is thus also avoided that sealing loses
Imitate and cause and oil leakage phenomenon occur, improve the service life and functional reliability of check valve so that check valve has good
High stability.
The used with tractor distributor provided with balance guide rod of the present invention, with can ensure that valve element will not shake in pressure fluctuation
The advantages of dynamic, service life of extension check valve, functional reliability of raising valve.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and that described in above-described embodiment and specification is the present invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appended claims and its
Equivalent is defined.
Claims (1)
1. the used with tractor distributor provided with balance guide rod, it is characterized in that, including valve body (1), protecgulum (2) and bonnet (3)；It is described
Valve rod (4) is provided with valve body (1), the first end of the valve rod (4) is inserted within the bonnet (3), the valve rod (4)
Second end is inserted within the protecgulum (2)；Handle (5) is provided with the protecgulum (2)；One end of the handle (5) is stretched into
With by pulling the handle (5) pulling valve rod (4) along valve within the protecgulum (2) and with the valve rod (4) phase clamping
The axial linear movement of bar (4)；The other end of the handle (5) is stretched out in outside the protecgulum (2) in order to which craft is pulled；
The through hole for penetrating the bonnet (3) is offered on the end face of one end of the remote valve body (1) of the bonnet (3)
(301), it is provided with a balance guide rod (6) in the through hole (301)；The first end of the balance guide rod (6) stretches out in described
Outside bonnet (3), the second end of the balance guide rod (6) is inserted within the bonnet (3) and with the first of the valve rod (4)
End is flexibly connected；The balance guide rod (6) being capable of axially moving along a straight line along the valve rod (4) in the through hole (301)；
It is provided with a seal groove, the seal groove and sets on the end face being engaged on the bonnet (3) with the valve body (1)
It is equipped with a special-shaped seal ring (23)；
Second end of the balance guide rod (6) is provided with a boss (601), and the left part of the valve rod (4) is provided with one
End screw (7), the right-hand member of the end screw (7) is inserted in the stem cavity (401) of the left part of the valve rod (4)；
The left part of the end screw (7) is provided with one and the boss (601) shape identical groove, boss (601) card
It is connected within the groove so that be flexibly connected between the balance guide rod (6) and the valve rod (4)；
It is provided with the valve body (1) in unidirectional valve pocket (103), the unidirectional valve pocket (103) and is provided with check valve back-moving spring
(24), nonreturn valve core (25) and check valve steel ball (26)；The nonreturn valve core (25) includes front end guide way (2501), middle part and connected
Junctor (2502) and tail end (2503)；Two grades of guide ways are provided with the outer peripheral face of the middle connection body (2502)
(2504)；
When valve rod is in middle position state, now valve rod is not acted, by valve rod between oil suction chamber (104) and the first oil duct (101)
Block without connecting；Check valve is not acted, and check valve steel ball is located at the bottom of valve rod ball groove, and nonreturn valve core is pinned, the first oil
Also do not connected between road (101) and the second oil duct (102)；Now, due to valve rod middle position, back-moving spring is not compressed, to valve
Bar is inelastic；
Commutation states are in after valve rod is to left movement, are connected between oil suction chamber (104) and the first oil duct (101), hydraulic oil
Enter the first oil duct (101) from oil suction chamber (104)；Now valve rod is by the upward jack-up of check valve steel ball, and check valve steel ball promotes single
Moved upwards to valve element, check valve is opened, the first oil duct (101) is connected with the second oil duct (102)；Now, due to check valve
Two grades of guide ways are provided with core, hydraulic oil flows into the second oil duct, check valve can be normal by the compensating groove of two grades of guide ways
Realize the one-way flow of fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140637.5A CN104747522B (en) | 2015-03-28 | 2015-03-28 | Used with tractor distributor provided with balance guide rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510140637.5A CN104747522B (en) | 2015-03-28 | 2015-03-28 | Used with tractor distributor provided with balance guide rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104747522A CN104747522A (en) | 2015-07-01 |
| CN104747522B true CN104747522B (en) | 2017-09-05 |
Family
ID=53587658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510140637.5A Active CN104747522B (en) | 2015-03-28 | 2015-03-28 | Used with tractor distributor provided with balance guide rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104747522B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296433Y (en) * | 1997-01-25 | 1998-11-04 | 深圳市洁霸环卫车辆设备修造有限公司 | Hand or pneumatic operated two purpose hydraulic multi-way change valve |
| CN101235832A (en) * | 2007-02-02 | 2008-08-06 | 上海立新液压有限公司 | Hand-driven change valve |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4018966B2 (en) * | 2002-10-29 | 2007-12-05 | 日信工業株式会社 | Molding method of resin piston for center valve type hydraulic master cylinder |
| TWI427227B (en) * | 2011-08-01 | 2014-02-21 | Koge Electronics Co Ltd | Proportional valve |
| CN202909250U (en) * | 2012-11-09 | 2013-05-01 | 深圳迈瑞生物医疗电子股份有限公司 | Adjustable pressure relief valve with fast release function, anesthesia machine and breathing machine |
| CN204493335U (en) * | 2015-03-28 | 2015-07-22 | 合肥长源液压股份有限公司 | Be provided with the used with tractor distributor of balance guide rod |
-
2015
- 2015-03-28 CN CN201510140637.5A patent/CN104747522B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296433Y (en) * | 1997-01-25 | 1998-11-04 | 深圳市洁霸环卫车辆设备修造有限公司 | Hand or pneumatic operated two purpose hydraulic multi-way change valve |
| CN101235832A (en) * | 2007-02-02 | 2008-08-06 | 上海立新液压有限公司 | Hand-driven change valve |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104747522A (en) | 2015-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104728204B (en) | Distributor for tractor | |
| US10240597B2 (en) | Pump assembly including fluid cylinder and tapered valve seats | |
| CN104776078B (en) | There is the used with tractor allotter of auto-reset function | |
| CN201753790U (en) | Safety valve for multi-way valve | |
| CN204493334U (en) | There is the used with tractor distributor of auto-reset function | |
| CN104747522B (en) | Used with tractor distributor provided with balance guide rod | |
| CN204493336U (en) | For the distributor of tractor | |
| CN204739233U (en) | Choke valve with adjustable manifold is used | |
| CN104214382A (en) | Three-way control valve for high-pressure place | |
| CN203742631U (en) | High-flow pressure triple-purpose valve of individual hydraulic prop | |
| CN204493333U (en) | Be provided with the used with tractor distributor of high stability one-way valve | |
| CN204493335U (en) | Be provided with the used with tractor distributor of balance guide rod | |
| CN205715028U (en) | A kind of super-pressure hydraulic control check valve | |
| CN104405908A (en) | Valve core component of corrugated pipe type double-base sleeve valve | |
| CN104747521B (en) | Used with tractor distributor equipped with high stability check valve | |
| CN109595217B (en) | Oil cylinder with built-in oil way channel | |
| CN201575196U (en) | Hydraulic pilot-control stop valve | |
| CN201714748U (en) | Safety valve for multi-way valve | |
| CN103672138A (en) | Single-pedal type foot valve | |
| CN204083287U (en) | Bellows two-seater telescoping valve mangetic core assembly | |
| CN209385430U (en) | A kind of single-acting lifting cylinder | |
| CN104005900B (en) | Combined air buffering making-up air device | |
| CN207195737U (en) | A kind of floating valve seat high-performance regulating valve | |
| CN112494188A (en) | Bidirectional electro-hydraulic variable-damping hydraulic cylinder | |
| CN205806670U (en) | Inner sliding sleeve antidetonation choke valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |