CN205806054U - A kind of hydraulicdirectional control valve device and carry the engineering machinery of this device - Google Patents
A kind of hydraulicdirectional control valve device and carry the engineering machinery of this device Download PDFInfo
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- CN205806054U CN205806054U CN201620147226.9U CN201620147226U CN205806054U CN 205806054 U CN205806054 U CN 205806054U CN 201620147226 U CN201620147226 U CN 201620147226U CN 205806054 U CN205806054 U CN 205806054U
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Abstract
This utility model provides a kind of hydraulicdirectional control valve device and carries the engineering machinery of this device, change valve device is connected with hydraulic actuating unit, including: valve body, valve inner is provided with a plurality of oil circuit, pump oil-in, the oil-in of hydraulic actuating unit and oil return opening and banked direction control valves oil return opening；Pump, is connected by pump oil-in with each bar oil circuit in valve body；Left pushing means, the left side of the spool in valve body stretches out valve body and stretches in left pushing means, and left pushing means is slided to the right in order to application valve body；Right pushing means, the right side of spool stretches out valve body and stretches in right pushing means, and right pushing means is slided to the left in order to application valve body；Pioneer pump, is connected with left pushing means and right pushing means respectively, transmits hydraulic oil in order to pushing means to the left and/or right pushing means.The problem that when this utility model produces impact and startup when solving over stop present in technology by very simple structure, response is slow.
Description
Technical field
This utility model relates to hydraulic valve field, particularly relates to a kind of hydraulicdirectional control valve device and carries the engineering of this device
Machinery.
Background technology
In the prior art, as it is shown in figure 1, control change-over valve core each pilot control pressure signal line 103,104
On be arranged in parallel choke valve 101 and check valve 102 (the most external one-way throttle valve), in engineering machinery, especially hydraulic pressure digging machine
Operation switching be suitable for on reversal valve 107.After not showing hydraulic actuator action on Fig. 1, reversal valve valve core 108 times
During to middle position, for the impact preventing spool 108 return rapidly from causing, main valve plug 108 is under the effect of two ends return spring 109
During returning to position, the seating velocity of spool is affected by from guide's oil pocket 110 oil extraction, in guide's oil pocket 110
Hydraulic oil is discharged by choke valve 101, to slow down spool seating velocity to alleviate impact during stopping, simultaneously in order to prevent hydraulic pressure
Response during executive component action is deteriorated, and arranges check valve 102 oil circuit parallel with above-mentioned choke valve 101.I.e. reach quickly to carry
The purpose stopping impact can being reduced while high hydraulic actuator response.
As it is shown in figure 1, all use concatenation one-way throttle valve at change-over valve core two ends, during startup, pilot pressure signal passes through
Check valve 102 is fed to hydraulic control elder generation guide cavity 110, but the pressure oil of spool other end guide's oil pocket can only pass through choke valve 101
Oil extraction, therefore slows down the speed that spool moves, and causes response when starting excessively poor.According to past technology, when starting stopping
If fast operating pilot handle, if main valve plug control one side, chamber one-way throttle valve is set time, when can slow down stopping
Impact, ensures response when starting simultaneously, but if is respectively provided with one-way throttle valve in control chamber, main valve plug two ends, because opening
Throttling action is produced, so the problems such as delayed can be produced in operability time dynamic.
In order to solve the problems referred to above, it is proposed that hydraulic principle as shown in Figure 2.Pilot control oil at valve core of main valve two ends
On road 203,204, arranging the pilot operated valve device 202 parallel with choke valve 201, during startup, this pilot pressure signal is made by oil circuit 208
Use in the pilot operated valve device 202 that oil extraction is surveyed, and make it open, eliminate the throttling impact of Fig. 1 structure pilot control oil circuit oil return side, carry
The high response of main valve plug when starting.Although the hydraulic pressure described in Fig. 2 is away from response characteristic when can improve startup, but knot
Structure is extremely complex, and the technology in Fig. 1 and Fig. 2 all must be provided with guide's fluid pressure line, therefore oil circuit layout, assembling and pipe arrangement etc.
Aspect the most very very complicated, also to arrange the reversal valve operating multiple hydraulic actuators on hydraulic pressure digging machine, and cost is the most non-
Chang Gao.
Therefore, the most urgently provide that a kind of layout is simple, the banked direction control valves oil circuit of compact conformation, to solve the problems referred to above.
Utility model content
In view of the above problems, the application describes a kind of hydraulicdirectional control valve device, and described change valve device performs with hydraulic pressure
Unit is connected, and described change valve device includes:
Valve body, is positioned at the centre of described change valve device, and described valve inner is provided with a plurality of oil circuit, pump oil-in, institute
State the oil-in of hydraulic actuating unit and oil return opening and banked direction control valves oil return opening；
Pump, is connected by described pump oil-in with each bar oil circuit in described valve body；
Left pushing means, is positioned at the left side of described valve body, and the left side of the spool in described valve body is stretched out described valve body and stretches
Entering in described left pushing means, described left pushing means is slided to the right in order to control described valve body；
Right pushing means, is positioned at the right side of described valve body, and the right side of described spool is stretched out described valve body and stretches into the described right side
In pushing means, described right pushing means is slided to the left in order to control described valve body；
Pioneer pump, is connected with described left pushing means and described right pushing means respectively, in order to described left pushing means
And/or described right pushing means transmits hydraulic oil.
It is also preferred that the left described left pushing means includes:
Left end cap, described left end cap is hollow structure, is fixedly mounted on the left side of described valve body, and the left side of described spool is stretched
Go out part and be positioned at described left end cap；
Left spring, is positioned at the inside of described left end cap, and one end abuts against with described left end cap, the other end and described valve body
Left side extension abuts against；
Guide-bar mechanism, is fixedly connected on extension on the left of described spool, and is positioned at the inside of described left spring；
Left spring lid, described left spring lid is fixedly installed on the inside of described left end cap, described left spring lid inner hollow,
Described guide-bar mechanism stretches in described left spring lid, forms guide's small oil cavity between described guide-bar mechanism and described left spring lid,
Described guide-bar mechanism horizontally slips in described guide's small oil cavity.
The first oil circuit of described pioneer pump is connected and respectively with described first it is also preferred that the left described guide-bar mechanism is provided with
The second oil circuit that oil circuit, described guide's small oil cavity are connected, is provided with check valve in described second oil circuit.
It is also preferred that the left the top of the bottom of described guide-bar mechanism, the bottom of described left spring lid and described left end cap is constituted
One guide's oil pocket.
It is also preferred that the left matched in clearance, described guide rod machine between the internal diameter of described left spring lid and the external diameter of described guide-bar mechanism
Structure along described left spring lid inner-diameter portion whose horizontally slip.
It is also preferred that the left the effective travel of the described spool that the internal diameter degree of depth of described left spring lid is more than 2 times.
It is also preferred that the left be provided with groove on the external diameter of described guide-bar mechanism, described guide's oil pocket leads to described guide's small oil cavity
Cross described groove and the excircle of described guide-bar mechanism and connect.
It is also preferred that the left described left pushing means also includes that a left spring seat, described left spring seat are fixedly installed on described spool
Left-hand end, and one end of described left spring is low is connected on described left spring seat.
It is also preferred that the left described right pushing means includes:
Right end cap, described right end cap is hollow structure, is fixedly mounted on the right side of described valve body, and the right side of described spool is stretched
Go out part and be positioned at described right end cap；
Right spring, is positioned at the inside of described right end cap, and one end abuts against with described right end cap, the other end and described valve body
Right side extension abuts against.
This utility model additionally provides a kind of engineering machinery, including described hydraulicdirectional control valve device.
Technique scheme has the advantage that or beneficial effect: the hydraulicdirectional control valve provided by this utility model is filled
Putting, when producing impact and startup when can solve over stop present in technology by very simple structure, response is slow
Problem, and, pilot pressure signal oil circuit need not add other any valve bodies, therefore low cost, reliability height, the most just
It is to increase substantially the reliability of engineering machinery, operability, safety.
Accompanying drawing explanation
With reference to appended accompanying drawing, more fully to describe embodiment of the present utility model.But, appended accompanying drawing is only used for
Bright and illustrate, be not intended that the restriction to this utility model scope.
Fig. 1 is the structural representation one of hydraulicdirectional control valve in prior art；
Fig. 2 is the structural representation two of hydraulicdirectional control valve in prior art；
The structural representation of a kind of hydraulicdirectional control valve device that Fig. 3 provides for this utility model；
Structural representation when spool is in middle position in a kind of hydraulicdirectional control valve device that Fig. 4 A provides for this utility model；
Structural representation when spool moves in a kind of hydraulicdirectional control valve device that Fig. 4 B provides for this utility model；
Structure when spool is in end of travel in a kind of hydraulicdirectional control valve device that Fig. 4 C provides for this utility model is shown
It is intended to；
The structural representation of groove in a kind of hydraulicdirectional control valve device that Fig. 4 D provides for this utility model；
The another kind of structural representation of a kind of hydraulicdirectional control valve device that Fig. 5 provides for this utility model.
In accompanying drawing: 101, choke valve；102, check valve；103, pressure signal line；104, pressure signal line；107, commutation
Valve；108, spool；109, spring；110, guide's oil pocket；201, choke valve；202, pilot operated valve device；203, pilot control oil circuit；204、
Pilot control oil circuit；208, pilot control oil circuit；301, valve body；302, pump；303, hydraulic actuating unit；304, fuel tank；305、
Oil circuit；306, oil circuit；307, oil circuit；308, oil circuit；309, oil circuit；310, oil circuit；311, oil circuit；312, spool；313, spool
Extension；316, left spring seat；318, left spring；319, right spring；320, left end cap；322, guide's oil pocket；324, guide
Small oil cavity；328, check valve；332, pilot valve；333, oil circuit；335, pioneer pump；336, left spring lid；338, the first oil circuit；
339, groove；340, internal diameter；341, guide-bar mechanism；342, centralizing spring；345, external diameter；346, the second oil circuit 346；350, path
Fraising；351, right end cap；352, right spring base；P, pump oil-in；CyA, oil-in；CyB, oil return opening；T, banked direction control valves oil return opening.
Detailed description of the invention
Hydraulicdirectional control valve device a kind of to this utility model with specific embodiment and carry this device below in conjunction with the accompanying drawings
Engineering machinery is described in detail.
As it is shown on figure 3, a kind of hydraulicdirectional control valve device, it is connected with hydraulic actuating unit 303, including:
Valve body 301, is positioned at the centre of described change valve device, in order to switch described change valve device internal oil passages, described
Hydraulic actuating unit 303 is connected by oil circuit with two oil-in CyA, the oil return opening CyB on described valve body 301；
Pump 302, is connected by pump hydraulic fluid port P with the oil circuit in described valve body 301；
Left pushing means, is positioned at the left side of described valve body 301 and is connected with described spool 312, in order to control spool 312 to
Right motion；
Right pushing means, is positioned at the right side of described valve body 301 and is connected with described spool 312, in order to control described spool
312 to left movement；
Pioneer pump 335, is connected, in order to described left pushing means transmission by pilot valve 332 with described left pushing means
Hydraulic oil.
Wherein, described valve body 301 includes:
Spool 312, is positioned at the center of described valve body 301, and described valve body 301 is stretched out at the two ends of described spool 312, and divides
Do not penetrate in described left pushing means and described right pushing means.
Described left pushing means includes:
Left end cap 320, described left end cap 320 is in hollow structure, and the left side extension of described spool 312 is positioned at described
In left end cap 320；
Left spring 318, is positioned at the inside of described left end cap 320, and one end abuts against with described left end cap 320, the other end with
The left side extension of described valve body 301 abuts against；
Guide-bar mechanism 341, fixes with extension on the left of described spool 312 and is connected, and be positioned at described left spring 318
Portion.The second oil circuit 346 it is provided with in described guide-bar mechanism 341.
Specifically, in the hydraulicdirectional control valve device that the present embodiment proposes, left side pushing means includes a left end cap
320, left end cap 320 is in hollow structure.Described left spring 318 one end is connected with left end cap 320, the other end and spool 312 phase
Connecting, i.e. left spring 318 is in order to form an elastic force between left end cap 320 and spool 312.
From the point of view of further, described pushing means also includes that a guide-bar mechanism 341, described guide-bar mechanism 341 are positioned at a described left side
The inside of spring 318.It is provided with the second oil circuit 346 in described guide-bar mechanism 341, and is connected by pilot valve 332 with pioneer pump 335
Connect.After pioneer pump 335 transmits hydraulic oil by the pilot valve 332 second oil circuit 346 in guide-bar mechanism 341, hydraulic oil liquid
Act on spool 312, promote described spool 312 to move to the right.
From the point of view of further, described guide-bar mechanism 341 is additionally provided with the first oil circuit 338, guide at described spool 312
Hydraulic oil in pump 335 enters the second oil circuit 346 by the first oil circuit 338.
Furthermore, it is understood that be provided with check valve 328 in described guide-bar mechanism 341, described guide-bar mechanism 341 one end is with described
Spool 312 is fixing to be connected, the other end and left spring lid 336 airtight connection, and described left spring lid 336 is in hollow structure, described
Guide-bar mechanism 341 stretches into described left spring lid 336 side in hollow structure.Additionally, the opposite side of described left spring lid 336 is solid
Surely it is arranged on described left end cap 320.
From the point of view of further, described left spring lid 336 is positioned at the inside of described left spring 318.
From the point of view of further, described left pushing means also includes that a left spring seat 316, described left spring seat 316 are fixed on institute
State the left-hand end of spool 312, and one end of described left spring 318 is connected on described left spring seat 316.
From the point of view of further, the part of described left spring lid 336 hollow constitutes guide's small oil cavity 324, described second oil circuit
Guide's small oil cavity 324 described in 346 UNICOMs.
From the point of view of further, the external diameter 345 of described guide-bar mechanism 341 arranges groove 339 axially.
From the point of view of further, described guide-bar mechanism 341, described left spring lid 336, the bottom of described spring pedestal and described
The top of left end cap 320, constitutes guide's oil pocket 322, and described first oil circuit 338 connects with described guide's oil pocket 322.
From the point of view of further, described right pushing means includes:
Right end cap 351, is fixedly connected to form a space structure with described valve body 301, and the right side of described spool 312 is stretched into
In described space structure；
Right spring base 352, is fixedly installed on the right-hand member of described spool 312；
Right spring 319, is arranged between described right spring base 352 and described right end cap 351, in order to described spool 312
Produce an elastic force to the left.
Specifically, the outside at valve body 301 is provided with the pump hydraulic fluid port P and hydraulic actuating unit 303 being connected with pump 302
Hydraulic fluid port CyA with CyB being connected, the oil return inlet T being connected with fuel tank 304.Additionally, each hydraulic fluid port all with in change valve 301
Multiple internal oil passages 305,306,307,308,309,310 and 311 are connected.In order to switch these internal oil passages 305-311, valve
Core 312 moves back and forth in change valve 301, for the leakage of hydraulic oil, spool between oil duct each in preventing valve body 301
Fit clearance between 312 and spool 312 hole of valve body 301 is the least.As it is shown on figure 3, spool 312 is in spool 312 hole
Middle position, spool 312 two ends stretch out from the side of above-mentioned change valve 301, and extension is provided with left spring seat 316 and effect
Spring on left spring seat 316.The extension of spool 312, left spring seat 316, left spring 318 and left end cap 320 are constituted
Guide's oil circuit hydraulic cavities.
As shown in Figure 4 A, it is spool 312 part-structure schematic diagram of hydraulicdirectional control valve device when being positioned at middle position.Guide
The inside of oil pocket 322, on the left of spool 312, extension is mounted with guide-bar mechanism 341, and becomes one.Another of spring
Hold the effect by left spring lid 336, be in its pre-compressed state, and then keep spool 312 to be in middle position.Additionally, left spring lid
Matched in clearance between internal diameter 340 part and external diameter 345 part of above-mentioned guide-bar mechanism 341 of 336, guide-bar mechanism 341 can be along a left side
Internal diameter 340 part of spring cup 336 is slided freely.Bottom and guide-bar mechanism 341 at the internal diameter 340 of left spring lid 336
Top defines guide's small oil cavity 324.It is worthy of note, the bore depth of left spring lid 336 spool 312 more than 2 times has
Effect stroke, the external diameter 345 of guide-bar mechanism 341 is provided above with axial groove 339.
When spool 312 is close to middle position, the hydraulic oil in guide's small oil cavity 324 at place bottom left spring lid 336 internal diameter 340
Led in guide's oil pocket 322 by the groove 339 on guide-bar mechanism 341 external diameter 345.Machined in the inside of guide-bar mechanism 341
UNICOM's guide's oil pocket 322 and the first oil circuit 338 and the second oil circuit 346 of guide's small oil cavity 324.Second oil circuit 346 is installed
It is provided with check valve 328, it is ensured that unimpeded to guide's small oil cavity 324 of guide's oil pocket 322 hydraulic oil flow, effectively prevents oil
The refluence of liquid.
Fig. 4 A, Fig. 4 B and Fig. 4 C represent successively, at guide oil chamber 322 hydraulic oil and guide's small oil cavity 324 hydraulic pressure
Under the common effect of oil and left spring 318, spool 312 is made to be respectively at the middle position in spool 312 hole, moving process and commutation position
Put.
In turn below according to Fig. 3, Fig. 4 A, Fig. 4 B, Fig. 4 C, Fig. 4 D explanation course of action of the present utility model:
As it is shown on figure 3, spool 312 is under the common effect of spring force and hydraulic coupling, move right.Specific as follows: operation
Pilot valve 332, the pressure oil of pioneer pump 335 acts on guide's oil pocket 322 by oil circuit, and meanwhile, this pilot pressure passes through guide rod
The first oil circuit 338, check valve the 328, second oil circuit 346 in mechanism 341 act on guide's small oil cavity 324.Guide's oil pocket 322 and
Pressure oil liquid in guide's small oil cavity 324 acts on spool 312, when oil liquid pressure sum is more than spool 312 right-hand member in figure
During the spring force of the right spring 319 in right pushing mechanism, hydraulic coupling makes this spool 312 right direction in figure move.In this process
In, guide's oil pocket 322 and guide's small oil cavity 324 are by the groove 339 on the external diameter 345 of guide-bar mechanism 341 and guide-bar mechanism 341
Excircle and connect, therefore within the extremely short time, pressure signal just may act on spool 312.I.e. operated pilot valve 332
Hydraulic actuating unit 303 is that is actionable simultaneously, makes handle and executive component reach good servo-actuated performance, hydraulic actuating unit
The 303 any positions that can stop at regulation.
When pilot valve 332 returns to middle position, the pilot pressure hydraulic oil oil sump tank at spool 312 two ends, spool 312 is at spring
Effect under return to middle position, its moving process such as figure Fig. 4 C, Fig. 4 B, Fig. 4 A order shown in.Spool 312 state shown in i.e. Fig. 4 C,
When pilot valve 332 returns to middle position, spool 312 is left side movement in figure under the effect of the right spring of centering 319, but guide is little
Pressure oil in oil pocket 324 cannot pass through check valve 328, but passes through external diameter 345 and the left spring lid 336 of guide-bar mechanism 341
Internal diameter 340 between annular gap be discharged to guide's oil pocket 322, the hydraulic oil in guide's oil pocket 322 is through oil duct 333, pilot valve
332 oil sump tanks.The seating velocity of spool 312 can be adjusted, such that make elder generation in can be by suitably setting this annular gap
Pilot valve 332 returns to middle position rapidly, it is also possible to oil between cylinder ports CyA, CyB and pump oil circuit, oil return line in slowly closing Fig. 3
Road, therefore can be greatly lowered impact when hydraulic actuating unit 303 stops.
It addition, by the area setting above-mentioned annular gap, then further according to feature change's ring of hydraulic actuating unit 303
The area in shape gap, can set each the most rational stopped process of hydraulic actuating unit 303.It addition, spool 312 from Fig. 4 B or
When the position of person Fig. 4 C returns to the middle position shown in Fig. 4 A, the fluid in guide's small oil cavity 324 is logical time in spool 312 near position
The groove 339 crossed on the external diameter 345 of guide-bar mechanism 341 can be circulated to guide's oil pocket 322.This position and spool 312 hydraulic fluid port
Closed position essentially the same.
As it is shown on figure 3, when pilot pressure signal acts on guide's oil pocket 322 of spool 312 shown in Fig. 3, so that spool
312 time in figure, left is moved, and the pressure oil in guide's small oil cavity 324 is discharged to rapidly guide by second oil circuit 346 of Fig. 4 A
Oil pocket 322.Therefore, when corresponding pilot valve 332 operates, spool 312 starts rapidly, so hydraulic actuating unit 303
Starting the sensitiveest, therefore the response characteristic of system is fine.
In figure 3 above, Fig. 4 A, Fig. 4 B, Fig. 4 C, the throttling oil circuit between guide's oil pocket 322 and guide's small oil cavity 324 is by leading
Annular gap between groove 339 and left spring lid 336 internal diameter 340 hole on linkage 341 external diameter 345 is constituted.But such as Fig. 5
Shown in, it is also possible to it is made up of the path fraising 350 set on left spring lid 336 and its external diameter 345.
As it has been described above, the hydraulicdirectional control valve device that the present embodiment provides is unlike past technology, in guide oil hydraulic coupling
Increase new parts and pipeline on holding wire, startup response spy can not affected by the most simple and compact structure
Reduce impact when stopping on the premise of property, improve operability, such that it is able to indirectly improve the operability of main frame, safety.
It addition, the hydraulicdirectional control valve device that the present embodiment provides can be applied to the multichannel valve oil that multiple reversal valve is constituted
Lu Zhong, when this banked direction control valves uses engineering machinery, during the operation of particularly each hydraulic actuating unit 303 of hydraulic pressure digging machine, permissible
Ensure the response characteristic that each hydraulic actuating unit 303 is good when operating, impact during stopping is greatly lowered simultaneously；I.e. can between
Connect and the hydraulic pressure digging machine that operability is comfortable, safety is excellent is provided.
The present embodiment additionally provides a kind of engineering machinery, is provided with above-mentioned hydraulicdirectional control valve device in this engineering machinery.
The hydraulicdirectional control valve device that the present embodiment provides, is first provided with pump on the corresponding valve body 301 of banked direction control valves and enters
Hydraulic fluid port P, the oil-in CyA and oil return opening CyB of hydraulic actuating unit 303 and banked direction control valves oil return inlet T, each hydraulic fluid port correspondence connects pump
302, have inside hydraulic actuating unit 303, fuel tank, and this banked direction control valves the multiple internal oil passages being connected with above-mentioned each hydraulic fluid port and with
Equipped with spool 312 slidably on each internal oil passages, and the two ends of spool 312 are all from the side of the valve body 301 of above-mentioned banked direction control valves
Face highlights, and arranges valve gap to form airtight guide's oil pocket 322 in respective protruding parts.In this guide's oil pocket 322, spool
312 two ends are respectively provided with spring base, install corresponding spring in spring base periphery, and pilot pressure signal is applied to above-mentioned each guide oil
On chamber 322, by two ends spring on spool 312 and the effect and the movement of control spool 312 that arrive first pressure signal.Pass through valve
The movement of core 312 controls the switching of working connection.To reach to control the purpose of hydraulic actuating unit 303.
On hydraulicdirectional control valve device as above, inside pilot pressure oil pocket, spool 312 end is provided with
The guide-bar mechanism 341 that this spool 312 is connected, guide-bar mechanism 341 matches with left spring lid 336, at guide-bar mechanism 341
The inner chamber of top and left spring lid 336 forms the small oil cavity of pilot pressure, arrange inside guide-bar mechanism 341 check valve 328 and
Oil circuit to guarantee unimpeded to pilot pressure oil loculus signal of pilot pressure oil signal, otherwise the most obstructed.Pilot pressure signal is executed
While flowing to pilot pressure small oil cavity by check valve 328 when being added to above-mentioned guide's oil pocket 322, when pilot pressure reduces and valve
During core 312 is returned to middle position, it is discharged to guide's oil pocket 322 by pressure oil in throttling guide's small oil cavity 324, this spool 312
When returning near position, the above-mentioned guide's small oil cavity 324 of connection and the oil circuit of guide's oil pocket 322 are set, as the engineering of feature
Mechanical hydraulic valve device and carry the engineering machinery of this device.
Additionally, using the annular gap between spring base internal diameter 340 and guide post external diameter 345 as throttling method.
Additionally, arrange small-bore on spring base or guide post as throttling means.
The hydraulicdirectional control valve device provided by the present embodiment, can be solved in technology by very simple structure
The problem that when producing impact during the stopping existed and start, response is slow, and, pilot pressure signal oil circuit need not add
Other any valve bodies 301, therefore low cost, reliability height, namely can increase substantially the reliability of engineering machinery, operation
Property, safety.
Claims (10)
1. a hydraulicdirectional control valve device, described change valve device is connected with hydraulic actuating unit (304), it is characterised in that institute
State change valve device to include:
Valve body (301), is positioned at the centre of described change valve device, and described valve body (301) is internally provided with a plurality of oil circuit, pump oil-feed
Mouth (P), the oil-in (CyA) of described hydraulic actuating unit (304) and oil return opening (CyB) and banked direction control valves oil return opening (T)；
Pump (303), is connected by described pump oil-in (P) with each bar oil circuit in described valve body (301)；
Left pushing means, is positioned at the left side of described valve body (301), and institute is stretched out in the left side of the spool (312) in described valve body (301)
Stating valve body (301) and stretch in described left pushing means, described left pushing means is slided to the right in order to control described valve body (301)
Dynamic；
Right pushing means, is positioned at the right side of described valve body (301), the right side of described spool (312) stretch out described valve body (301) and
Stretching in described right pushing means, described right pushing means is slided to the left in order to control described valve body (301)；
Pioneer pump (336), is connected with described left pushing means and described right pushing means respectively, in order to described left pushing means
And/or described right pushing means transmits hydraulic oil.
Hydraulicdirectional control valve device the most according to claim 1, it is characterised in that described left pushing means includes:
Left end cap (320), described left end cap (320), in hollow structure, is fixedly mounted on the left side of described valve body (301), described
The left side extension of spool (312) is positioned at described left end cap (320)；
Left spring (318), is positioned at the inside of described left end cap (320), and one end abuts against with described left end cap (320), the other end
Abut against with the left side extension of described valve body (301)；
Guide-bar mechanism (341), is fixedly connected on described spool (312) left side extension, and is positioned at described left spring (318)
Internal；
Left spring lid (336), described left spring lid (336) is fixedly installed on the inside of described left end cap (320), described left spring
Lid (336) inner hollow, in described guide-bar mechanism (341) stretches into described left spring lid (336), described guide-bar mechanism (341) with
Forming guide's small oil cavity (324) between described left spring lid (336), described guide-bar mechanism (341) is at described guide's small oil cavity
(324) horizontally slip in.
Hydraulicdirectional control valve device the most according to claim 2, it is characterised in that described guide-bar mechanism is provided with in (341)
Connect described pioneer pump (336) the first oil circuit (338) and respectively with described first oil circuit (338), described guide's small oil cavity
(324) the second oil circuit (346) being connected, is provided with check valve (328) in described second oil circuit (346).
Hydraulicdirectional control valve device the most according to claim 3, it is characterised in that the bottom of described guide-bar mechanism (341), institute
The top of the bottom and described left end cap (320) of stating left spring lid (336) constitutes guide's oil pocket (322).
Hydraulicdirectional control valve device the most according to claim 4, it is characterised in that the internal diameter of described left spring lid (336)
(340) matched in clearance and between the external diameter (345) of described guide-bar mechanism (341), described guide-bar mechanism (341) is along described left spring
Lid (336) internal diameter (340) part horizontally slip.
Hydraulicdirectional control valve device the most according to claim 5, it is characterised in that the internal diameter of described left spring lid (336)
(340) effective travel of the degree of depth described spool (312) more than 2 times.
Hydraulicdirectional control valve device the most according to claim 4, it is characterised in that the external diameter of described guide-bar mechanism (341)
(345) being provided with groove (339) on, described guide's oil pocket (322) and described guide's small oil cavity (324) are by described groove
(339) and the excircle of described guide-bar mechanism (341) and connect.
Hydraulicdirectional control valve device the most according to claim 2, it is characterised in that described left pushing means also includes a left bullet
Spring (318) seat, described left spring (318) seat is fixedly installed on the left-hand end of described spool (312), and described left spring (318)
One end low be connected on described left spring (318) seat.
Hydraulicdirectional control valve device the most according to claim 1, it is characterised in that described right pushing means includes:
Right end cap (351), described right end cap (351), in hollow structure, is fixedly mounted on the right side of described valve body (301), described
The right side extension of spool (312) is positioned at described right end cap (351)；
Right spring (319), is positioned at the inside of described right end cap (351), and one end abuts against with described right end cap (351), the other end
Abut against with the right side extension of described valve body (301).
10. an engineering machinery, it is characterised in that include the hydraulicdirectional control valve device as described in arbitrary in claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147226.9U CN205806054U (en) | 2016-02-26 | 2016-02-26 | A kind of hydraulicdirectional control valve device and carry the engineering machinery of this device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620147226.9U CN205806054U (en) | 2016-02-26 | 2016-02-26 | A kind of hydraulicdirectional control valve device and carry the engineering machinery of this device |
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| Publication Number | Publication Date |
|---|---|
| CN205806054U true CN205806054U (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620147226.9U Withdrawn - After Issue CN205806054U (en) | 2016-02-26 | 2016-02-26 | A kind of hydraulicdirectional control valve device and carry the engineering machinery of this device |
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| Country | Link |
|---|---|
| CN (1) | CN205806054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650047A (en) * | 2016-02-26 | 2016-06-08 | 常熟华威履带有限公司 | Hydraulic reversing valve device and engineering machine provided with hydraulic reversing valve device |
-
2016
- 2016-02-26 CN CN201620147226.9U patent/CN205806054U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650047A (en) * | 2016-02-26 | 2016-06-08 | 常熟华威履带有限公司 | Hydraulic reversing valve device and engineering machine provided with hydraulic reversing valve device |
| CN105650047B (en) * | 2016-02-26 | 2017-11-10 | 常熟华威履带有限公司 | A kind of hydraulicdirectional control valve device and the engineering machinery for carrying the device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161214 Effective date of abandoning: 20171110 |
|
| AV01 | Patent right actively abandoned |