CN204493334U - There is the used with tractor distributor of auto-reset function - Google Patents
There is the used with tractor distributor of auto-reset function Download PDFInfo
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- CN204493334U CN204493334U CN201520180227.9U CN201520180227U CN204493334U CN 204493334 U CN204493334 U CN 204493334U CN 201520180227 U CN201520180227 U CN 201520180227U CN 204493334 U CN204493334 U CN 204493334U
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- valve rod
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- bonnet
- rod
- guide rod
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Abstract
The utility model discloses a kind of used with tractor distributor with auto-reset function, comprise valve body, protecgulum and bonnet; Be provided with valve rod in valve body, the two ends of valve rod are inserted in protecgulum and bonnet respectively.Protecgulum is provided with handle; Bonnet offers the through hole penetrating bonnet, in through hole, be provided with a balance guide rod.The side face of valve rod is provided with the radial hole of the radial penetration valve rod along valve rod, in radial hole, is provided with small ball; In stem cavity, be provided with location guide bracket, the guide rod seat in the guide bracket of location is provided with a guide rod, and the right side of guide rod seat is also provided with poppet valve core.The end face that bonnet matches with valve body is provided with a seal groove, within seal groove, is provided with special-shaped seal ring.Used with tractor distributor of the present utility model, there is valve rod auto reversive problem when can solve back pressure, there is valve rod auto-reset function and reset reliable, bonnet good sealing effect and not covered with dust, improve the functional reliability advantages of higher of distributor.
Description
Technical field
The utility model relates to a kind of distributor, especially a kind of used with tractor distributor with auto-reset function.
Background technique
Hydraulic element are large with its power, and mounting arrangements is easy, is easy to controlled, easy to operate comfortable, and failure rate is low is convenient to the advantages such as maintenance, is very suitable for structural form changeable, the application of the farm machinery that operating conditions is severe.In decades, hydraulics is not only at agricultural machinery, and lathe, engineering machinery, building machinery, space flight and aviation equipment etc. is more and more applied, and defines huge market.
Tendency of Agricultural Machinery in China uses hydraulic element, and quantity is maximum, and kind is minimum, and price is minimum, is therefore the most potential industry field.A wherein important factor is that hydraulics is applied and is also nowhere near on agricultural machinery.This is because China's peasant's purchasing power is low, limits the application of hydraulics on agricultural machinery.Adopt the agri-machinery quality class of hydraulics to improve, price has also got on, and peasant is beyond affordability, and such main computer boxes quality and technology content are difficult to be greatly improved.Therefore, main engine factory have to reduce configuration, and change configuration exchanges market for makes main computer boxes quality and technology content all decline.The hydraulic element of the hydraulic system domestic production of current Chinese less than 180 horsepowers tractors, meet the need of market substantially.But quality is unbalanced, working life is short, and particularly hydraulic lock and jumping position faults frequent occur.
As Figure 10 and Figure 11, in prior art, usually arrange between bonnet and valve body one with the seal face same shape of bonnet and the asbestos packing 27 of size, pad between bonnet and valve body, to realize the sealing between bonnet and valve body.But asbestos have generally acknowledged a kind of carcinogen in the world, asbestos packing 27 is used to have the healthy problem of harm staff.Asbestos packing has the feature of immersion oil and oil impregnate.After use after a while, asbestos packing 27 can be soaked into by fluid, becomes easily infected by dust.After long dust is infected with, asbestos packing 27 sealing station is just messy, have impact on the aesthetic property of the overall appearance of machine.After the long-time immersion oil of asbestos packing 27, the sealing effect of asbestos packing 27 will decline, and just needs replacing asbestos packing, the sealing effect that guarantee is good about general half a year.
As Figure 10, be provided with spring seat, Returnning spring in the cavity of bonnet, the left end of valve rod stretches in the cavity of bonnet.Owing to being sealing between valve rod and valve body, the cavity of bonnet is connected with oil back chamber.If oily back pressure, owing to being less than the area of right side by oil pressure by oil pressure area on the left of valve rod, there is the difference in areas of a compression area, the power to the right of force rate left acting on described valve rod in bonnet is little, now hydraulic oil will produce a thrust to the right to valve rod, if back pressure is comparatively large, valve rod so can be caused to move right, cause valve rod automatic reverse, be prone to accidents.
As Figure 10, and the distributor of prior art, when needing to reset, must manually pull the reset that described operating grip could realize valve rod, do not have auto-reset function, controllability is poor.
Model utility content
The utility model is for avoiding the deficiency that exists in above-mentioned prior art, providing a kind of used with tractor distributor with auto-reset function, with solve asbestos packing easily pollute and need often replacing, the automatic reverse of valve rod back pressure, can only the problem of hand reset.
The utility model be technical solution problem by the following technical solutions.
Have the used with tractor distributor of auto-reset function, its structural feature is, comprises valve body 1, protecgulum 2 and bonnet 3; Be provided with valve rod 4 in described valve body 1, the first end of described valve rod 4 is inserted within described bonnet 3, and the second end of described valve rod 4 is inserted within described protecgulum 2; Described protecgulum 2 is provided with handle 5; One end of described handle 5 to be inserted within described protecgulum 2 and with the clamping of described valve rod 4 phase to pull valve rod 4 along the axial linear movement of valve rod 4 by pulling described handle 5; The other end of described handle 5 stretches out in outside described protecgulum 2 so that pull by hand;
In described bonnet 3, the outer circumferential face of described valve rod 4 and end screw 7 is arranged with the first spring seat 8, second spring seat 9, Returnning spring 10 and setting sleeve 11, described first spring seat 8, second spring seat 9 and setting sleeve 11 set gradually from left to right, described Returnning spring 10 is arranged between described first spring seat 8 and the second spring seat 9, right part and the described valve body 1 of described setting sleeve 11 abut against, described second spring seat 9 abuts against with the left part of setting sleeve 11, valve rod 4 can in described setting sleeve 11 straight line motion thus compression or loosen described Returnning spring 10, described in the axial penetration that screw 7 inside, described end is arranged at along described end screw 7, the cavity of end screw 7, sets gradually lock screw 12, pressure regulating screw 13, locking spring 14 and localization handspike 15 from left to right in the cavity of described end screw 7, the outer circumferential face of described localization handspike 15 left part is arranged with locking spring 14, and the right-hand member of described localization handspike 15 is inserted in described stem cavity 401, and the right part outer circumferential face of described localization handspike 15 is provided with type conical bench 1501,
The side face of described valve rod 4 is provided with the radial hole of valve rod 4 described in the radial penetration along described valve rod 4, is provided with small ball 16 in described radial hole, described small ball 16 abuts against with the type conical bench 1501 of the right part of described localization handspike 15; A location guide bracket 17 is provided with in described stem cavity, described location guide bracket 17 is positioned at the left side of described localization handspike 15, a guide rod seat 18 is provided with in the inner chamber of described location guide bracket 17, the left part of described guide rod seat 18 is fixedly installed a guide rod 19, abuts against after described guide rod 19 extends through described localization handspike 15 left with the right part of described pressure regulating screw 13; The right-hand member of described guide rod seat 18 is provided with pressure adjusting spring 20, and the right side of described guide rod seat 18 is also provided with a poppet valve core 21, and described pressure adjusting spring 20 is between described guide rod seat 18 and described poppet valve core 21; The right part of described poppet valve core 21 can be inserted in also can block described elongated hole 22, to control being communicated with and disconnection between described stem cavity 401 with described elongated hole 22 in the elongated hole 22 of described valve rod 4 direction extension; The right-hand member of described elongated hole 22 is connected with the first oil duct 101 of valve body 1;
The end face that described bonnet 3 matches with described valve body 1 is provided with a seal groove, within described seal groove, is provided with a special-shaped seal ring 23.
The structural feature with the used with tractor distributor of auto-reset function of the present utility model is also:
The end face of one end away from described valve body 1 of described bonnet 3 offers the through hole 301 penetrating described bonnet 3, in described through hole 301, is provided with a balance guide rod 6; The first end of described balance guide rod 6 stretches out in outside described bonnet 3, and the second end of described balance guide rod 6 to be inserted within described bonnet 3 and to be flexibly connected with the first end of described valve rod 4; Described balance guide rod 6 can along the axially straight line motion in described through hole 301 of described valve rod 4;
Second end of described balance guide rod 6 is provided with a boss 601, and the left part of described valve rod 4 is provided with an end screw 7, and the right-hand member of described end screw 7 is inserted in the stem cavity 401 of the left part of described valve rod 4; The left part of described end screw 7 is provided with a groove identical with described boss 601 shape, and described boss 601 is connected within described groove, makes to be flexibly connected between described balance guide rod 6 and described valve rod 4.
Described elongated hole 22 is circular hole.
Compared with the prior art, the utility model beneficial effect is embodied in:
The used with tractor distributor with auto-reset function of the present utility model, comprises valve body, protecgulum and bonnet; Be provided with valve rod in valve body, the first end of valve rod is inserted within bonnet, and the second end of valve rod is inserted within protecgulum; Protecgulum is provided with handle; One end of handle to be inserted within protecgulum and with the clamping of valve rod phase to pull valve rod along the axial linear movement of valve rod by pulling handle; The other end of handle stretches out in outside protecgulum so that pull by hand; The end face of one end away from valve body of bonnet offers the through hole penetrating bonnet, in through hole, is provided with a balance guide rod; Balance guide rod can along the axially straight line motion in through hole of valve rod.
The side face of valve rod is provided with the radial hole of the radial penetration valve rod along valve rod, is provided with small ball in radial hole, the type conical bench of the right part of small ball and localization handspike abuts against; A location guide bracket is provided with in stem cavity, location guide bracket is positioned at the left side of localization handspike, be provided with a guide rod seat in the inner chamber of location guide bracket, the left part of guide rod seat is fixedly installed a guide rod, abuts against after guide rod extends through localization handspike left with the right part of pressure regulating screw; The right-hand member of guide rod seat is provided with pressure adjusting spring, and the right side of guide rod seat is also provided with a poppet valve core.
The end face that bonnet matches with valve body is provided with a seal groove, within seal groove, is provided with special-shaped seal ring.
The used with tractor distributor with auto-reset function of the present utility model, has following technological merit.
(1) when there is back pressure, owing to being provided with balance guide rod, make for valve rod left with to the right by oil pressure area identical, therefore valve rod is in stress balance state, etc. does not cause valve rod to be subject to thrust and cause auto reversive problem to the right so to solve in prior art left and right compression area.
(2) owing to have employed the automatic position reset device that the assemblies such as setting sleeve, locking spring, location guide bracket, localization handspike, poppet valve core are formed, making distributor of the present utility model by controlling the pressure of oil suction chamber, realizing the auto-reset function of valve rod.
(3) fitting surface matched between bonnet with valve body is arranged profiled seal groove, in profiled seal groove, corresponding special-shaped seal ring is set.Owing to adopting the mode arranging seal ring within seal groove to seal, be radial seal mode, sealing effect is better.
The used with tractor distributor with auto-reset function of the present utility model, there is valve rod auto reversive problem when can solve back pressure, there is valve rod auto-reset function and reset reliable, bonnet good sealing effect and not covered with dust, improve the functional reliability advantages of higher of distributor.
Accompanying drawing explanation
Fig. 1 is the plan view with the used with tractor distributor of auto-reset function of the present utility model.
Fig. 2 is the left view with the used with tractor distributor of auto-reset function of the present utility model.
Fig. 3 is the right elevation with the used with tractor distributor of auto-reset function of the present utility model.
Fig. 4 is the worm's eye view with the used with tractor distributor of auto-reset function of the present utility model.
Fig. 5 is the A-A sectional view (distributor is in meta state) of Fig. 3.
Fig. 6 is the A-A sectional view (distributor is in running order) of Fig. 3.
Fig. 7 is the plan view with the spool of the one-way valve of the used with tractor distributor of auto-reset function of the present utility model.
Fig. 8 is the plan view with the special-shaped seal ring of the used with tractor distributor of auto-reset function of the present utility model.
Fig. 9 is the left view with the special-shaped seal ring of the used with tractor distributor of auto-reset function of the present utility model.
Figure 10 is the sectional view with the used with tractor distributor of auto-reset function of prior art.
Figure 11 is the plan view with the asbestos packing of the used with tractor distributor of auto-reset function of prior art.
Figure 12 is the plan view with the spool of the one-way valve of the used with tractor distributor of auto-reset function of prior art.
Label in accompanying drawing 1 ~ accompanying drawing 12: 1 valve body, 101 first oil ducts, 102 second oil ducts, 103 unidirectional valve pockets, 104 oil suction chambers, 2 protecgulums, 3 bonnets, 301 through holes, 4 valve rods, 401 stem cavity, 5 handles, 6 balance guide rods, 601 boss, 7 end screws, 8 first spring seats, 9 second spring seats, 10 Returnning springs, 11 setting sleeves, 12 lock screws, 13 pressure regulating screws, 14 locking springs, 15 localization handspikes, 1501 type conical bench, 16 small balls, 17 location guide brackets, 18 guide rod seats, 19 guide rods, 20 pressure adjusting springs, 21 poppet valve cores, 22 elongated hole, 23 special-shaped seal rings, 24 one-way valve Returnning springs, 25 nonreturn valve cores, 2501 front end guide waies, 2502 middle connection body, 2503 tail ends, 2504 secondary guide waies, 2505 compensating grooves, 26 one-way valve steel balls, 27 asbestos packings.
Below by way of embodiment, and the utility model is described in further detail by reference to the accompanying drawings.
Embodiment
See accompanying drawing 1-9, the used with tractor distributor with auto-reset function of the present utility model, comprises valve body 1, protecgulum 2 and bonnet 3; Be provided with valve rod 4 in described valve body 1, the first end of described valve rod 4 is inserted within described bonnet 3, and the second end of described valve rod 4 is inserted within described protecgulum 2; Described protecgulum 2 is provided with handle 5; One end of described handle 5 to be inserted within described protecgulum 2 and with the clamping of described valve rod 4 phase to pull valve rod 4 along the axial linear movement of valve rod 4 by pulling described handle 5; The other end of described handle 5 stretches out in outside described protecgulum 2 so that pull by hand;
In described bonnet 3, the outer circumferential face of described valve rod 4 and end screw 7 is arranged with the first spring seat 8, second spring seat 9, Returnning spring 10 and setting sleeve 11, described first spring seat 8, second spring seat 9 and setting sleeve 11 set gradually from left to right, described Returnning spring 10 is arranged between described first spring seat 8 and the second spring seat 9, right part and the described valve body 1 of described setting sleeve 11 abut against, described second spring seat 9 abuts against with the left part of setting sleeve 11, valve rod 4 can in described setting sleeve 11 straight line motion thus compression or loosen described Returnning spring 10, described in the axial penetration that screw 7 inside, described end is arranged at along described end screw 7, the cavity of end screw 7, sets gradually lock screw 12, pressure regulating screw 13, locking spring 14 and localization handspike 15 from left to right in the cavity of described end screw 7, the outer circumferential face of described localization handspike 15 left part is arranged with locking spring 14, and the right-hand member of described localization handspike 15 is inserted in described stem cavity 401, and the right part outer circumferential face of described localization handspike 15 is provided with type conical bench 1501,
The side face of described valve rod 4 is provided with the radial hole of valve rod 4 described in the radial penetration along described valve rod 4, is provided with small ball 16 in described radial hole, described small ball 16 abuts against with the type conical bench 1501 of the right part of described localization handspike 15; A location guide bracket 17 is provided with in described stem cavity, described location guide bracket 17 is positioned at the left side of described localization handspike 15, a guide rod seat 18 is provided with in the inner chamber of described location guide bracket 17, the left part of described guide rod seat 18 is fixedly installed a guide rod 19, abuts against after described guide rod 19 extends through described localization handspike 15 left with the right part of described pressure regulating screw 13; The right-hand member of described guide rod seat 18 is provided with pressure adjusting spring 20, and the right side of described guide rod seat 18 is also provided with a poppet valve core 21, and described pressure adjusting spring 20 is between described guide rod seat 18 and described poppet valve core 21; The right part of described poppet valve core 21 can be inserted in also can block described elongated hole 22, to control being communicated with and disconnection between described stem cavity 401 with described elongated hole 22 in the elongated hole 22 of described valve rod 4 direction extension; The right-hand member of described elongated hole 22 is connected with the first oil duct 101 of valve body 1;
The end face that described bonnet 3 matches with described valve body 1 is provided with a seal groove, within described seal groove, is provided with a special-shaped seal ring 23.
The used with tractor distributor with auto-reset function of the present utility model, owing to being provided with balance guide rod, and balance guide rod is connected with valve rod to adopt and is flexibly connected, and prevents the generation of card valve because coaxiality error causes or leakage of oil problem.When there is back pressure, owing to being provided with balance guide rod, balance guide rod due to and valve rod between be connected, be equivalent to a part for valve rod and balance the left end that guide rod is positioned at bonnet, make for valve rod left with to the right by oil pressure area identical, therefore valve rod is in stress balance state, etc. does not cause valve rod to be subject to thrust and cause auto reversive problem to the right so to solve in prior art left and right compression area.
As the outline drawing that Fig. 1-4 is distributor of the present utility model, 5-6 is A-A sectional view.Valve body is provided with actuator port A and B, oil inlet P and oil return inlet T, shown oil inlet P communicates with oil suction chamber 104, for providing pressure oil for distributor.By Fig. 5 and Fig. 6, can find out that distributor valve rod is in meta and change during commutation two states.Fig. 7 is the plan view of the spool of one-way valve.Fig. 8, Fig. 9 are the structural drawing of special-shaped seal ring.
The end face of one end away from described valve body 1 of described bonnet 3 offers the through hole 301 penetrating described bonnet 3, in described through hole 301, is provided with a balance guide rod 6; The first end of described balance guide rod 6 stretches out in outside described bonnet 3, and the second end of described balance guide rod 6 to be inserted within described bonnet 3 and to be flexibly connected with the first end of described valve rod 4; Described balance guide rod 6 can along the axially straight line motion in described through hole 301 of described valve rod 4;
Second end of described balance guide rod 6 is provided with a boss 601, and the left part of described valve rod 4 is provided with an end screw 7, and the right-hand member of described end screw 7 is inserted in the stem cavity 401 of the left part of described valve rod 4; The left part of described end screw 7 is provided with a groove identical with described boss 601 shape, and described boss 601 is connected within described groove, makes to be flexibly connected between described balance guide rod 6 and described valve rod 4.
Described elongated hole 22 is circular hole.
In distributor of the present utility model, valve rod has two kinds of working staties, and one is meta state, and two is commutation states.
As Fig. 5, valve rod is in meta state, and now valve rod does not have action.When valve rod is in meta state, now valve rod does not have action, is blocked and be not communicated with between oil suction chamber 104 and the first oil duct 101 by valve rod.One-way valve does not have action, and one-way valve steel ball is positioned at the bottom of valve rod ball groove, and nonreturn valve core pins, and is not also communicated with between the first oil duct 101 and the second oil duct 102.Now, due to valve rod meta, Returnning spring is not compressed, inelastic to valve rod.
As Fig. 6, when valve rod is in commutation states after left movement, be connected between oil suction chamber 104 and the first oil duct 101, high pressure oil enters the first oil duct 101 from oil suction chamber 104; Now valve rod is by one-way valve steel ball upwards jack-up, and one-way valve steel ball promotes nonreturn valve core and moves upward, and one-way valve opens, the first oil duct 101 is connected with the second oil duct 102.Now, owing to nonreturn valve core being provided with secondary guide way, high pressure oil, through the compensating groove of secondary guide way, flows into the second oil duct, and one-way valve normally can realize the one-way flow of fluid.
During commutation states, because valve rod moves, distance between the first spring seat and the second spring seat reduces, and Returnning spring is compressed in the ball groove that to snap in after now small ball moves on reversing cover inwall.Now, localization handspike is moved to the left, locking spring is compressed by localization handspike and holds out against localization handspike, the type conical bench of localization handspike right-hand member withstands steel ball tightly, in the ball groove that steel ball is clamped on reversing cover inwall, now valve rod is under the effect of small ball, locking spring, and position is locked in commutation states.If do not have other external force, change as oil pressure or pull handle by hand, valve rod will be locked, and be fixed on commutation states.
During hand reset, pull handle by staff, drawn to the right by valve rod, pulled out by small ball in the ball groove reversing cover inwall, valve rod resets.
When automatically reseting, the oil pressure in oil suction chamber 104 increases.When the oil pressure in oil suction chamber 104 is to setting value, high pressure oil now in oil suction chamber 104 will act on poppet valve core by elongated hole, described poppet valve core is promoted left, poppet valve core is moved to the left, high pressure oil enters the right side of valve-rod cavity, high pressure oil pushes up location guide bracket left, location guide bracket is moved to the left and pushes up localization handspike left again, now because localization handspike is moved to the left, small ball falls due to Action of Gravity Field in ball groove, valve rod is removed from locking state, and now under the effect of Returnning spring, valve rod automatically moves right realization and automatically resets.
Owing to have employed the automatic position reset device that the assemblies such as setting sleeve, locking spring, location guide bracket, localization handspike, poppet valve core are formed, making distributor of the present utility model by controlling the pressure of oil suction chamber, realizing the auto-reset function of valve rod.
By adjustment pressure adjusting spring, adjustable automatically resets force value.
In distributor of the present utility model, the fitting surface matched is arranged profiled seal groove between bonnet with valve body, as Fig. 8-9, in profiled seal groove, corresponding special-shaped seal ring is set.Owing to adopting the mode arranging seal ring within seal groove to seal, be radial seal mode, sealing effect is better.Seal ring adopts quality of rubber materials, avoids the problem adopting asbestos material to be detrimental to health.In addition, because seal ring is positioned within two sealing surfaces be superimposed with each other of bonnet and valve body, do not expose the surface of machine, therefore there is not the problem of leakage of oil covered with dust, solve the problem adopting asbestos packing material to make outward appearance ugly due to oil impregnate covered with dust simultaneously.
Described valve body 1 is provided with unidirectional valve pocket 103, in described unidirectional valve pocket 103, is provided with one-way valve Returnning spring 24, nonreturn valve core 25 and one-way valve steel ball 26;
Described nonreturn valve core 25 comprises front end guide way 2501, middle connection body 2502 and tail end 2503; The outer circumferential face of described middle connection body 2502 is provided with a secondary guide way 2504, and the axis described secondary guide way 2504 is provided with along described nonreturn valve core 25 runs through the compensating groove 2505 of described secondary guide way 2504.
Described compensating groove is square groove.When moving right to working position when valve rod, steel ball moves up, nonreturn valve core rises, sealing between the tapered portion 2506 of the tail end bottom of nonreturn valve core and valve is removed, first oil duct 101 is connected with the second oil duct 102, and front end guide way and the valve of nonreturn valve core lower end still keep directly contacting and sealing.The structure of nonreturn valve core as shown in Figure 7.
Except front end guide way directly contacts with one-way valve cavity wall, the outer circumferential face of the secondary guide way of middle connection body still with the internal face connecting part of unidirectional valve pocket.Now, the hydraulic oil in the first oil duct flows into the second oil duct 102 by compensating groove, can not affect fluid and directly circulate at the first oil duct 101 and the second oil duct 102.And, due to the lower end of the spool of one-way valve and middle part all with valve pocket contact internal walls.Even if when there is pressure surge in hydraulic oil, the top of spool also can not along with the fluctuation of oil pressure double swerve.Like this, with regard to the problem that the friction avoided between front end guide way and unidirectional valve pocket, sealing gasket aggravates, also the problem that wear and tear in guide way periphery, front end and sealing gasket crushes easily of the spool of one-way valve can not be there is, extend the working life of one-way valve, also avoid seal failure and cause and occur oil leakage phenomenon, thus ensure that the control accuracy of valve, improve the functional reliability of distributor.
Owing to being provided with secondary guide way in the middle connection body of nonreturn valve core, for one-way valve high-pressure opening state provides stable guidance quality, avoid spool lower end to wear and tear under the fluctuation of oil pressure and between valve pocket, also avoid seal failure and cause and occur oil leakage phenomenon, improve working life and the functional reliability of one-way valve, make one-way valve have good high stability.Only need add man-hour, middle connection body processes a secondary guide way, process compensating groove simultaneously on secondary guide way, structure is simple and easy to processing.Owing to being provided with compensating groove on secondary guide way, high pressure oil can be made in the first oil duct to flow into the second oil duct by compensating groove, and one-way valve normally can realize the one-way flow of fluid.
The used with tractor distributor with auto-reset function of the present utility model, has following feature.
(1) when there is back pressure, owing to being provided with balance guide rod, make for valve rod left with to the right by oil pressure area identical, therefore valve rod is in stress balance state, etc. does not cause valve rod to be subject to thrust and cause auto reversive problem to the right so to solve in prior art left and right compression area.
(2) owing to have employed the automatic position reset device that the assemblies such as setting sleeve, locking spring, location guide bracket, localization handspike, poppet valve core are formed, making distributor of the present utility model by controlling the pressure of oil suction chamber, realizing the auto-reset function of valve rod.
(3) fitting surface matched between bonnet with valve body is arranged profiled seal groove, in profiled seal groove, corresponding special-shaped seal ring is set.Owing to adopting the mode arranging seal ring within seal groove to seal, be radial seal mode, sealing effect is better.
(4) owing to being provided with secondary guide way in the middle connection body of nonreturn valve core, for one-way valve high-pressure opening state provides stable guidance quality, avoid spool lower end to wear and tear under the fluctuation of oil pressure and between valve pocket, also avoid seal failure and cause and occur oil leakage phenomenon, improve working life and the functional reliability of one-way valve, make one-way valve have good high stability.
The used with tractor distributor with auto-reset function of the present utility model, has and can guarantee that spool can not rock, extend the advantage such as the working life of one-way valve, the functional reliability of raising valve when pressure fluctuation.
More than show and describe basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; the just principle of the present utility model described in above-described embodiment and specification; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (4)
1. there is the used with tractor distributor of auto-reset function, it is characterized in that, comprise valve body (1), protecgulum (2) and bonnet (3); Valve rod (4) is provided with in described valve body (1), the first end of described valve rod (4) is inserted within described bonnet (3), and the second end of described valve rod (4) is inserted within described protecgulum (2); Described protecgulum (2) is provided with handle (5); One end of described handle (5) to be inserted within described protecgulum (2) and with described valve rod (4) phase clamping to pull valve rod (4) along the axial linear movement of valve rod (4) by pulling described handle (5); The other end of described handle (5) stretches out in outside described protecgulum (2) so that pull by hand;
In described bonnet (3), the outer circumferential face of described valve rod (4) and end screw (7) is arranged with the first spring seat (8), second spring seat (9), Returnning spring (10) and setting sleeve (11), described first spring seat (8), second spring seat (9) and setting sleeve (11) set gradually from left to right, described Returnning spring (10) is arranged between described first spring seat (8) and the second spring seat (9), right part and the described valve body (1) of described setting sleeve (11) abut against, described second spring seat (9) abuts against with the left part of setting sleeve (11), valve rod (4) can in described setting sleeve (11) straight line motion thus compression or loosen described Returnning spring (10), described in the axial penetration that screw (7) inside, described end is arranged at along described end screw (7), the cavity of end screw (7), sets gradually lock screw (12), pressure regulating screw (13), locking spring (14) and localization handspike (15) from left to right in the cavity of described end screw (7), the outer circumferential face of described localization handspike (15) left part is arranged with locking spring (14), the right-hand member of described localization handspike (15) is inserted in described stem cavity (401), and the right part outer circumferential face of described localization handspike (15) is provided with type conical bench (1501),
The side face of described valve rod (4) is provided with the radial hole of valve rod (4) described in the radial penetration along described valve rod (4), be provided with small ball (16) in described radial hole, described small ball (16) abuts against with the type conical bench (1501) of the right part of described localization handspike (15); Location guide bracket (17) is provided with in described stem cavity, described location guide bracket (17) is positioned at the left side of described localization handspike (15), a guide rod seat (18) is provided with in the inner chamber of described location guide bracket (17), the left part of described guide rod seat (18) is fixedly installed a guide rod (19), and described guide rod (19) extends through described localization handspike (15) left and abuts against with the right part of described pressure regulating screw (13) afterwards; The right-hand member of described guide rod seat (18) is provided with pressure adjusting spring (20), the right side of described guide rod seat (18) is also provided with a poppet valve core (21), and described pressure adjusting spring (20) is positioned between described guide rod seat (18) and described poppet valve core (21); The right part of described poppet valve core (21) can be inserted in also can block described elongated hole (22), to control being communicated with and disconnection between described stem cavity (401) with described elongated hole (22) in the elongated hole (22) of described valve rod (4) direction extension; The right-hand member of described elongated hole (22) is connected with first oil duct (101) of valve body (1);
The upper end face matched with described valve body (1) of described bonnet (3) is provided with a seal groove, within described seal groove, is provided with a special-shaped seal ring (23).
2. the used with tractor distributor with auto-reset function according to claim 1, it is characterized in that, the end face of one end away from described valve body (1) of described bonnet (3) offers the through hole (301) penetrating described bonnet (3), in described through hole (301), be provided with a balance guide rod (6); The first end of described balance guide rod (6) stretches out in outside described bonnet (3), and the second end of described balance guide rod (6) to be inserted within described bonnet (3) and to be flexibly connected with the first end of described valve rod (4); Described balance guide rod (6) can along the axially straight line motion in described through hole (301) of described valve rod (4).
3. the used with tractor distributor with auto-reset function according to claim 2, it is characterized in that, second end of described balance guide rod (6) is provided with a boss (601), the left part of described valve rod (4) is provided with an end screw (7), and the right-hand member of described end screw (7) is inserted in the stem cavity (401) of the left part of described valve rod (4); The left part of described end screw (7) is provided with a groove identical with described boss (601) shape, described boss (601) is connected within described groove, makes to be flexibly connected between described balance guide rod (6) and described valve rod (4).
4. the used with tractor distributor with auto-reset function according to claim 1, is characterized in that, described elongated hole (22) is circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180227.9U CN204493334U (en) | 2015-03-28 | 2015-03-28 | There is the used with tractor distributor of auto-reset function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180227.9U CN204493334U (en) | 2015-03-28 | 2015-03-28 | There is the used with tractor distributor of auto-reset function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204493334U true CN204493334U (en) | 2015-07-22 |
Family
ID=53572655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520180227.9U Expired - Fee Related CN204493334U (en) | 2015-03-28 | 2015-03-28 | There is the used with tractor distributor of auto-reset function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204493334U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776078A (en) * | 2015-03-28 | 2015-07-15 | 合肥长源液压股份有限公司 | Distributor with automatic restoring function for tractor |
| CN106762899A (en) * | 2016-11-25 | 2017-05-31 | 合肥协力液压科技有限公司 | One kind automatically resets valve rod assembly |
| CN106930994A (en) * | 2017-05-09 | 2017-07-07 | 江苏力源液压机械有限公司 | Position floating reversal valve is jumped in the manual pressurize of tractor |
-
2015
- 2015-03-28 CN CN201520180227.9U patent/CN204493334U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776078A (en) * | 2015-03-28 | 2015-07-15 | 合肥长源液压股份有限公司 | Distributor with automatic restoring function for tractor |
| CN106762899A (en) * | 2016-11-25 | 2017-05-31 | 合肥协力液压科技有限公司 | One kind automatically resets valve rod assembly |
| CN106930994A (en) * | 2017-05-09 | 2017-07-07 | 江苏力源液压机械有限公司 | Position floating reversal valve is jumped in the manual pressurize of tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20170328 |