CN101725726A - Slide valve - Google Patents
Slide valve Download PDFInfo
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- CN101725726A CN101725726A CN200910205854A CN200910205854A CN101725726A CN 101725726 A CN101725726 A CN 101725726A CN 200910205854 A CN200910205854 A CN 200910205854A CN 200910205854 A CN200910205854 A CN 200910205854A CN 101725726 A CN101725726 A CN 101725726A
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- Prior art keywords
- mentioned
- traveller
- piston
- axle direction
- valve
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/32—Means for additional adjustment of the rate of flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
- Details Of Valves (AREA)
- Multiple-Way Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to a slide valve, capable of increasing baffle effect for the movement of a slide column along the axial direction and suppressing impact. A variable throttle mechanism (15) as a resistance generation device is arranged to apply the baffle action on the movement of the slide column (7) along the axial direction and comprises: a radial oil path (160 between a piston sliding hole (7A) of the slide column (7) and a spring chamber (13) and passing through the slide column (7); a piston (17) fixed at the side of a cover (6) and moving along the axial direction of the slide column (7) and changing the flow path area of the oil path (16). Compared with the situation that the slide column (7) is arranged at the midcourse position along the axial direction, the slide column (7) is at one-side end along the axial direction and the piston unit (17B) of the piston (170 is at the end surface (17C) side of the piston unit (17B) and the opening area (flow path area) of the oil path (16) is reduced.
Description
Technical field
The present invention relates to following guiding valve: be used for as construction implements such as hydraulic shovels, to absorbing the baffle effect of impacting usefulness along with oil circuit internal pressure variation etc. applies at the traveller of axle direction displacement.
Background technique
Generally, be provided with as guiding valves such as pressure controlled valve, flow control valve, position control valves at the oil circuit that is used for construction implement such as hydraulic shovel.The structure of this guiding valve according to conventional art is to insert traveller in the traveller hole that forms in valve shell, and be provided as grease chamber's (for example with reference to patent documentation 1) of pressure chamber in this traveller tip side.
In the conventional art, form a plurality of throttling ditches in traveller end periphery, it axially extends on the different position of axle direction, and, between these a plurality of throttling ditches by interconnecting at the annular groove that axle direction extends along the traveller periphery.At this moment, the setting of connecting between above-mentioned grease chamber and tap hole of a plurality of throttling ditches produces throttle resistance to the fluid of circulation, thus to the action performance baffle plate effect of above-mentioned traveller.
[patent documentation 1] spy opens the 2001-153237 communique
Guiding valve according to above-mentioned conventional art applies throttling action by a plurality of throttling ditches that are arranged on traveller end periphery to fluid, can bring into play the baffle plate effect.But baffle plate effect at this moment is not limited to the displacement of traveller axle direction, almost keeps certain, so no matter terminal far and near from stroke, the baffle plate effect is constant.And, along with traveller near the stroke end, the baffle plate effect descends sometimes.
Therefore, if pay attention to traveller at the responsiveness that moves midway, just can not get enough baffle plate effects, when traveller arrived the end (stroke end) of axle direction one side, the velocity of displacement of traveller can be too fast, and traveller also can bump against on the valve shell sometimes, produces to impact.
Summary of the invention
The present invention is in view of the invention of the problem of above-mentioned conventional art, the guiding valve that the object of the present invention is to provide the baffle plate effect that can improve the displacement of traveller axle direction, can suppress to impact etc. produces.
In order to solve above-mentioned problem, guiding valve of the present invention has: valve shell, and it has the traveller hole of extending at axle direction, is arranged at intervals with a plurality of paths on the axle direction in this traveller hole; Traveller, it interconnects, disconnects above-mentioned a plurality of path in axle direction inserts the traveller hole of above-mentioned valve shell movablely; The grease chamber, it is positioned at the axial side in above-mentioned traveller hole, is arranged in the above-mentioned valve shell, and inside is full of fluid; The resistance generation device, it produces throttle resistance to the inside and outside inflow in above-mentioned grease chamber, outflow to the fluid of circulation along with the displacement of above-mentioned traveller axle direction makes fluid.
The structure of employing scheme 1 is characterised in that, above-mentioned resistance generation device is made of variable restrictor mechanism, this variable restrictor mechanism is constructed as follows: compare when the axial half-way with above-mentioned traveller, when above-mentioned traveller was positioned at the end of axle direction one side, the flow path area of fluid diminished.
Invention according to scheme 2 is characterized in that, above-mentioned variable restrictor mechanism comprises: oil circuit, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, along with the axle direction displacement of above-mentioned traveller, changes the flow path area of above-mentioned oil circuit.
Invention according to scheme 3 is characterized in that, above-mentioned variable restrictor mechanism comprises: a plurality of pores, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, and along with the axle direction displacement of above-mentioned traveller, open and close is above-mentioned each pore arbitrarily, changes above-mentioned flow path area.
Invention according to scheme 4 is characterized in that, above-mentioned variable restrictor mechanism comprises: a plurality of pores, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, and above-mentioned traveller is when the axle direction half-way, open all above-mentioned each pores, when above-mentioned traveller is displaced to the end of axle direction one side, close the part of above-mentioned each pore, change above-mentioned flow path area to small part.
Invention according to scheme 5 is characterized in that, above-mentioned variable restrictor mechanism comprises: a plurality of pores, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, and above-mentioned traveller is opened all above-mentioned each pores when the axle direction half-way, when above-mentioned traveller is displaced to the end of axle direction one side, close any one above-mentioned each pore at least, changes above-mentioned flow path area.
Invention according to scheme 6 is characterized in that, above-mentioned traveller constitutes the tubular valve body, and its axial side is the piston sliding eye, and opening, opposite side are communicated with of above-mentioned path at least; Above-mentioned stream units of variance is made of piston, and one side and above-mentioned valve shell form as one or be provided with separately, and opposite side inserts in the above-mentioned piston sliding eye.
As above-mentioned, the structure of the invention that scheme 1 is put down in writing is to be provided with variable restrictor mechanism, is positioned at traveller hole axle direction with traveller and compares midway the time, and when traveller was positioned at axle direction one side end, the flow path area of fluid diminished.Thus, variable restrictor mechanism during to the end of opposite side slide displacement, reduces the flow path area of fluid from the axle direction half-way at traveller, can improve the baffle plate effect, throttle resistance is become greatly gradually, and can reduce the traveller velocity of displacement.As a result, can before traveller bumps against the valve shell end face, make it to slow down, cushion, can suppress preferably to impact and take place.
In the invention of scheme 2, variable adjustment mechanism is made of oil circuit that is arranged on the traveller side and the stream units of variance that is arranged on the valve shell side.Thus, above-mentioned stream units of variance can by producing the throttle resistance corresponding with flow path area, can be brought into play the baffle plate effect according to the flow path area of the above-mentioned oil circuit of traveller axle direction displacement the change.
Invention according to scheme 3, the stream units of variance of variable restrictor mechanism can come any one in a plurality of pores of open and close according to the axle direction displacement of traveller, change flow path area, at this moment also can produce the throttle resistance corresponding, can bring into play the baffle plate effect thus with flow path area.And, can change the opening gross area after the addition of a plurality of pore opening area, make it along with the displacement of traveller axle direction to reduce gradually the characteristic of the baffle plate effect that can produce according to appropriate change fluid throttle resistances such as the setting of each pore, numbers.
Invention according to scheme 4, the stream units of variance of variable restrictor mechanism is positioned at axle direction at traveller and opens whole a plurality of pores midway the time, close the part of above-mentioned each pore up to small part in the end that traveller is positioned at axle direction one side, so at this moment also can change the flow path area of fluid according to the axle direction displacement of traveller, produce the throttle resistance corresponding with flow path area, thus, along with the end of traveller near axle direction one side, the baffle plate effect can be improved, and the characteristic variation of baffle plate effect can be made.
Invention according to scheme 5, the stream units of variance of variable restrictor mechanism is opened whole a plurality of pores when traveller is positioned at the axle direction half-way, when being displaced to the end of axle direction one side, traveller closes any one above-mentioned each pore at least, the flow path area of fluid can be changed thus, the characteristic variation of baffle plate effect can be made.
Invention according to scheme 6, the traveller that is made of the tubular valve body during near axle direction one side end ground displacement, is arranged on the piston relative displacement of valve shell side in valve shell, enter in the piston sliding eye of traveller, can close a part by piston, can improve the baffle plate effect as pore.Therefore, constitute variable restrictor mechanism, can variable restrictor mechanism be set in traveller inside, can make whole guiding valve miniaturization with piston.
Description of drawings
To be expression the present invention's the 1st mode of execution described guiding valve closing the longitudinal section of the state when stopping on the valve position at traveller to Fig. 1.
Fig. 2 is that the traveller court in the presentation graphs 1 opens the longitudinal section that valve position is displaced to the state in axle direction neutral position.
Fig. 3 is the longitudinal section of the state of the expression traveller slide displacement stroke end of driving valve position to conduct.
Fig. 4 is the longitudinal section of the described guiding valve of expression the present invention's the 2nd mode of execution.
Fig. 5 is that traveller slide displacement in the presentation graphs 4 is to the longitudinal section of the state of the stroke end of driving valve position.
Fig. 6 is the longitudinal section of the described guiding valve of expression the present invention's the 3rd mode of execution.
Fig. 7 is that traveller slide displacement in the presentation graphs 6 is to the longitudinal section of the state of the stroke end of driving valve position.
Symbol description
1 valve shell
2 outer cover bodies
3 traveller holes
4 on high-tension side oily paths
The oily path of 5 low voltage sides
6 lids
7 travellers
7A piston sliding eye
The 7B vent pathway
8,9 oilholes
10 oil pressure guide portions
13 spring housing (grease chamber)
14 pressure setting springs
15,21,31 variable restrictor mechanisms (resistance generation device)
16 oil circuits
17 pistons (stream units of variance)
22,23,32,33 pores
Embodiment
Below with reference to the accompanying drawings, be example when using, describe the guiding valve of embodiment of the present invention in detail as the sequential programme valve.
Here, Fig. 1 to Fig. 3 represents the present invention's the 1st mode of execution.Among the figure, the 1st, the valve shell of formation guiding valve body portion (shell), this valve shell 1 comprises the outer cover body 2 and the lid described later 6 that form block as shown in Figure 1.
3 are arranged on the traveller hole on the outer cover body 2, and this traveller hole 3 forms left and right directions in outer cover body 2 (axle direction) and goes up the circular port that extends as shown in fig. 1, and the one side is in the end face 2A of outer cover body 2 one sides upper shed, with 6 interior connections of lid described later.Oil pressure guide portion 10 described later is set on the axle direction opposite side in traveller hole 3.
4, the 5 a plurality of paths (hereinafter referred to as oily path 4,5) that are arranged on the outer cover body 2, this oil path 4,5 on the axle direction in traveller hole 3 apart from one another by setting, by ring- type oil duct 4A, 5A and 3 interior connections of traveller hole that form around the traveller hole 3. Oil path 4,5 is interconnected, disconnects by oil duct 4A, 5A by traveller 7 described later.
Here, the oily path 4 in the oily path 4,5 be communicated with formation as the exhaust end of oil pressure pump (not shown) etc., form so-called on high-tension side oily path 4.The oily path 5 of opposite side is as the oily path 5 of the low voltage side that is communicated with oil tank (not shown) etc.
The 6th, constitute the lid of valve shell 1 with outer cover body 2, this lid 6 as Fig. 1～shown in Figure 3, forming a side is to cover the cylinder of covering of 6A, sealing.Here, securing meanss (not shown) such as lid 6 usefulness bolts releasably are fixed on the end face 2A of outer cover body 2.Lid 6 axial side parts from outer side covers traveller 7 described later, its inboard formation spring housing 13 described later.
The 7th, be slidably disposed on the traveller in the traveller hole 3 of valve shell 1, this traveller 7 as shown in Figure 1, an axial side is piston sliding eye 7A, opening, inside is drain passageway 7B, axial end side 7C forms the tubular valve body of sealing.The outer circumferential side of traveller 7 is provided with to be positioned at and covers annular convex 7D 6 opening ends, that be used to receive spring, and when pressure setting spring 14 described later was elastic deformation, 7D contacted with this annular convex.
On the traveller 7, on the position between piston sliding eye 7A and the end side 7C, a plurality of oilholes 8,9 are radially passing setting respectively, and these each oilhole 8,9 drain passageway 7B common and in the traveller 7 are communicated with.And the oilhole 8 in the oilhole 8,9 as shown in Figure 1, is communicated with oily path 5 by oil duct 5A, and thus, the drain passageway 7B in the traveller 7 is communicated with continuously with the oily path 5 of low voltage side.And the oilhole 9 of opposite side as shown in Figure 3, is communicated with on high-tension side oily path 4 by oil duct 4A etc.
Here, traveller 7 is by oil pressure guide portion 10 described later and pressure setting spring 14, along traveller hole 3 in axle direction slip displacement, as shown in Figure 1, under the end face 2A of annular convex 7D and outer cover body 2 state of contact, traveller 7 is for closing valve position (closing the stroke end on the valve direction).Traveller 7 slides when being indexed to out valve position (the stroke end on the valve opening position) as shown in Figure 3, and oilhole 9 is communicated with on high-tension side oily path 4 by oil duct 4A etc.Thus, 4,5 in oily path interconnects by traveller 7.
10 are arranged on the oil pressure guide portion in the outer cover body 2, and this oil pressure guide portion 10 comprises: guide piston 11, and it is slidably disposed on the axle direction opposite side in traveller hole 3, contacts with the end side 7C of traveller 7; Guide path 12, it is to the end-acted pilot pressure of this guide piston 11.Here, the diameter of guide piston 11 is less than traveller hole 3 and traveller 7, and the pilot pressure according to guide path 12 is supplied with drives traveller 7 at axle direction.
The 13rd, be positioned at traveller 7 axle direction one side, be formed on cover 6, as the spring housing of grease chamber, be provided with pressure setting spring 14 in this spring housing 13, its inside is full of fluid.Here, pressure setting spring 14 is subjected between the annular convex 7D of a 17A and traveller 7 with the spring that precompression (presetting) state is installed in piston 17 described later, set to press with the valve of opening of prior setting, traveller 7 is pressed against close on the valve direction (left among Fig. 1 to).
The pilot pressures (being the pressure in the on high-tension side oily path 4) that supply in the guide path 12 are above-mentioned when driving valve and setting the excess pressure of pressing for surpassing, guide piston 11 by oil pressure guide portion 10, make traveller 7 counter pressure setting springs 14, push to valve opening position (right among Fig. 1～Fig. 3), at this moment, pressure setting spring 14 is as Fig. 2, shown in Figure 3, elastic bending deflection.
The 15th, to the axle direction displacement of traveller 7 apply baffle effect, as the variable restrictor mechanism of resistance generation device.This variable restrictor mechanism 15 comprises: oil circuit 16 radially, and it passes traveller 7 and is provided with, and the piston sliding eye 7A of traveller 7 is communicated with spring housing 13; As the piston 17 of stream units of variance, it is fixedly installed on and covers 6 sides, along with the axle direction displacement of traveller 7, changes the flow path area of oil circuit 16.
Here, the spring that has the annular plate formation on axle direction one side of piston 17 is subjected to a 17A, and this spring is subjected to a 17A to be remained and covered 6 cap 6A state of contact by pressure setting spring 14.The opposite side position of piston 17 is plunger portion 17B, and itself and spring are formed as one by a 17A coaxially, extend at axle direction.But this plunger portion 17B relative displacement ground inserts in the piston sliding eye 7A of traveller 7, in its end face 17C side, as Fig. 2, shown in Figure 3, changes the opening area (flow path area) of oil circuit 16.
Thus, variable restrictor mechanism 15 makes fluid in the spring housing 13 from piston sliding eye 7A, the drain passageway 7B of oil circuit 16 in traveller 7 according to the axle direction displacement of traveller 7, promptly flow into, flow out at spring housing's 13 inside and outside fluid that make, the fluid of circulation produces the throttle resistance corresponding with the opening area of oil circuit 16 in oil circuit 16.And, when being positioned at the axle direction half-way, traveller 7 shown in Figure 2 compares, and when traveller 7 as shown in Figure 3 was positioned at axle direction one side end, the opening area of oil circuit 16 was less.
The guiding valve of present embodiment has said structure, the following describes its action.
At first, under the low state of the pilot pressure in the guide path 12 that increases and decreases according to the pressure in the oily path 4, to valve opening position pushing shown in Figure 1, the annular convex 7D of traveller 7 is to the end face 2A of outer cover body 2 pushing by pressure setting spring 14 for traveller 7.At this moment, the oilhole 9 of traveller 7 cuts off with on high-tension side oily path 4, so do not press oil to flow from the oily path 5 of on high-tension side oily path 4 to low voltage side.
But sometimes, for example the pressure oil pressure of supplying with to oily path 4 from oil pressure pump etc. rises, and the valve of opening that produces Overpressure of a safety valve setting spring 14 is set the superfluous high pressure of pressing.And, when the pilot pressure of high pressure supplies to guide path 12 like this, as shown in Figure 2, guide piston 11 a side displacement axially.Thus, traveller 7 is by guide piston 11 counter pressure setting springs 14, a side slip displacement axially.
Thus, the oilhole 9 of traveller 7 begins to be communicated with the oil duct 4A (on high-tension side oily path 4) of ring-type by otch etc. as shown in Figure 2.Therefore, on high-tension side oily path 4 begins to be communicated with the oily path 5 of low voltage side by oilhole 9, drain passageway 7B, the oilhole 8 of traveller 7, presses the oily path 5 of the part inflow low voltage side of oil.At this moment, set and press when following if the pilot pressures in the guide path 12 drop to the valve of opening of pressure setting spring 14, traveller 7 is understood and be returned to the valve position that closes shown in Figure 1 once more.
But, under state shown in Figure 2, pilot pressure in the guide path 12 can not drop to the valve of holding of pressure setting spring 14 sometimes yet and set below the pressure, at this moment by this pilot pressure, traveller 7 is with guide piston 11, as shown in Figure 3, and counter pressure setting spring 14, continue a side slip displacement axially, the top of traveller 7 (end face of piston sliding eye 7A side) collided by a 17A strongly with the spring of piston 17.
Therefore, in the present embodiment, be provided with axle direction displacement to traveller 7 apply baffle effect, as the variable restrictor mechanism of resistance generation device, its structure is: compare when axle direction half-way (with reference to Fig. 2) with traveller 7, as shown in Figure 3, when traveller 7 is positioned at the end of axle direction one side, reduce the flow path area of oil circuit 16 by piston 17.
That is, variable restrictor mechanism 15 at this moment has: oil circuit 16 radially, and it passes traveller 7 and is provided with between the piston sliding eye 7A and spring housing 13 of traveller 7; Piston 17, it is fixedly installed on and covers 6 sides, along with the axle direction displacement of traveller 7, changes the flow path area of oil circuit 16.And the plunger portion 17B of piston 17 as shown in Figure 3, reduces the opening area (flow path area) of oil circuit 16 in its end face 17C side.
Thus, variable restrictor mechanism 15 can be according to the axle direction displacement of traveller 7, make the fluid in the spring housing 13 flow into, flow out, the fluid that circulates in the oil circuit 16 is produced the throttle resistance corresponding with the opening area of oil circuit 16 from piston sliding eye 7A, the drain passageway 7B (being that spring housing 13 is inside and outside) of oil circuit 16 in traveller 7.
As a result, the plate washer effect can improve in variable restrictor mechanism 15 after the top of traveller 7 (end face of piston sliding eye 7A side) is subjected to a 17A near the spring of piston 17, in the end face 17C of piston 17 side, reduce the opening area of oil circuit 16 gradually, increase throttle resistance, reduce its velocity of displacement rapidly.
Therefore, according to present embodiment, the spring that can cushion traveller 7 tops and piston 17 by the plate washer effect of variable restrictor mechanism 15 is subjected to the collision of a 17A, can suppress the generation of impacting preferably.Thus, the spring that can prevent top, the piston 17 of traveller 7 is subjected to a 17A or covers 6 damages such as cap 6A, durability and the life-span that can improve each parts.
In addition, traveller 7 forms the tubular valve body, in the piston sliding eye 7A of all sides that sets within it, inserts the plunger portion 17B of piston 17.Therefore, the variable restrictor mechanism 17 that the oil circuit 16 of traveller 7 and piston 17 constitute can be contained in the inside of traveller 7, can realize the miniaturization of whole guiding valve.
Fig. 4 and Fig. 5 represent the 2nd mode of execution of the present invention, and in the 2nd mode of execution, the structural element identical with above-mentioned the 1st mode of execution omits its explanation with identical symbolic representation.
Present embodiment is characterised in that variable restrictor mechanism 21 constitutes apart from one another by a plurality of (as the 2) pore 22,23 that is provided with by the described piston 17 of the 1st mode of execution with on the axle direction of traveller 7.At this moment pore the 22, the 23rd, flow path area is by the oil circuit of the plunger portion 17B change of piston 17.
Here, pore 22 was formed on the drain passageway 7B that makes traveller 7 and the positions that spring housing 13 is communicated with for a long time, and another pore 23 is formed on the traveller 7 making the piston sliding eye 7A and the position that spring housing 13 is communicated with of traveller 7.At this moment pore 23 as shown in Figure 5, at traveller 7 slide displacements when the top of the stroke end of valve opening position, traveller 7 is contacted by a 17A with the spring of piston 17, plunger portion 17B by piston 17 stops up fully, disconnects piston sliding eye 7A, the drain passageway 7B of traveller 7.
Like this, in the present embodiment,, change the total opening area of pore 22,23, so can access and above-mentioned the 1st mode of execution action effect much at one according to the axle direction displacement of traveller 7 by the piston 17 of variable restrictor mechanism 21.
According to present embodiment, the top of traveller 7 (end face of piston sliding eye 7A side) is subjected on the half-way of a 17A at the spring that leaves piston 17, piston 17 by variable restrictor mechanism 21, pore 22,23 all is an open mode, on the position before the spring that touches piston 17 on the top of traveller 7 is subjected to a 17A, plunger portion 17B by piston 17 closes pore 23, and pore 22 is the state for opening still.
Thus, along with traveller 7 near the position that is subjected to axle direction one side that a 17A contacts with the spring of piston 17, can reduce the total opening gross area of the opening area of a plurality of pores 22,23, number by appropriate change such as pore 22,23, be provided with etc., can make damping force characteristic variation by baffle plate effect shock absorbing.
Fig. 6 and Fig. 7 represent the 3rd mode of execution of the present invention, and in the 3rd mode of execution, the structural element identical with above-mentioned the 1st mode of execution omits its explanation with identical symbolic representation.
Present embodiment is characterised in that variable restrictor mechanism 31 constitutes apart from one another by a plurality of (as the 2) pore 32,33 that is provided with by the described piston 17 of the 1st mode of execution with on the axle direction of traveller 7.At this moment pore 32,33 constitutes the oil circuit of flow path area by the plunger portion 17B change of piston 17.
Here, pore 32 was formed on the drain passageway 7B that makes traveller 7 and the positions that spring housing 13 is communicated with for a long time, and another pore 33 is formed on the traveller 7 making the piston sliding eye 7A and the position that spring housing 13 is communicated with of traveller 7.At this moment pore 33, is partly stopped up by the plunger portion 17B of piston 17 when the top of the stroke end of valve opening position, traveller 7 is contacted by a 17A with the spring of piston 17 at traveller 7 slide displacements as shown in Figure 7, and its opening area (flow path area) diminishes.
Like this, in the present embodiment,, change the total opening area of pore 32,33, can access and above-mentioned the 1st mode of execution action effect much at one according to the axle direction displacement of traveller 7 by the piston 17 of variable restrictor mechanism 31.
Particularly, according to present embodiment, the top of traveller 7 (end face of piston sliding eye 7A side) is subjected on the half-way of a 17A at the spring that leaves piston 17, piston 17 by variable restrictor mechanism 31, pore 32,33 all is an open mode, the top of traveller 7 is subjected at the spring that touches piston 17 on the position of a 17A, partly closes pore 33 by the plunger portion 17B of piston 17, and pore 32 still stays open state.
Thus, along with traveller 7 near the position that is subjected to axle direction one side that a 17A contacts with the spring of piston 17, can reduce the total opening gross area of the opening area of a plurality of pores 32,33, number by appropriate change such as pore 32,33, be provided with etc., can make damping force characteristic variation by baffle plate effect shock absorbing.
In above-mentioned the 2nd, the 3rd mode of execution, be that example describes when being respectively 2 with the number of the pore 32,33 of the pore 22,23 of variable restrictor mechanism 21, variable restrictor mechanism 31.But the present invention is not limited thereto, and for example the pore number can be increased to more than 3.And, when the pore number increases, adjust the setting of each pore, can further improve the baffle plate effect thus, can improve the degrees of freedom of adjusting on the damping force characteristic.
Above-mentioned the 1st～the 3rd mode of execution illustrated traveller 7 usually to closing valve position (neutral position) pushing, and the structure of pressure setting spring 14 is set in spring housing 13 in order to determine out valve to set to press.But the present invention is not limited thereto, and for example also goes for the not guiding valve of form such as working pressure setting spring 14.
When not using the piston of pushing piston 17 to be subjected to the devices such as spring of a 17A on lid 6 the cap 6A side, can with screw togather, adhere to, mode such as welding is fixed on axle direction one side of stream units of variance (as piston 17) on the valve shell (the cap 6A of lid 6), also can form as one.In addition, the stream units of variance also is not limited to piston 17 etc., for example can or cartridge be set separately in lid 6 side one, and a side of traveller is inserted interior all sides of this cartridge slidably, comes open and close oil circuit 16 (pore 22,33) by cartridge.
Claims (6)
1. guiding valve has: valve shell, and it has the traveller hole of extending at axle direction, is arranged at intervals with a plurality of paths on the axle direction in this traveller hole; Traveller, it interconnects, disconnects above-mentioned a plurality of path in axle direction inserts the traveller hole of above-mentioned valve shell movablely; The grease chamber, it is positioned at the axial side in above-mentioned traveller hole and is arranged on above-mentioned valve shell, and inside is full of fluid; The resistance generation device, it makes fluid to the inside and outside inflow in above-mentioned grease chamber, outflow along with the displacement of above-mentioned traveller axle direction, to the fluid generation throttle resistance of circulation; It is characterized in that,
Above-mentioned resistance generation device is made of variable restrictor mechanism, and this variable restrictor mechanism is constructed as follows: compare when being positioned at axial half-way with above-mentioned traveller, when above-mentioned traveller was positioned at the end of axle direction one side, the flow path area of fluid diminished.
2. guiding valve according to claim 1 is characterized in that, the formation of above-mentioned variable restrictor mechanism comprises: oil circuit, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, changes the flow path area of above-mentioned oil circuit along with the axle direction displacement of above-mentioned traveller.
3. guiding valve according to claim 1 is characterized in that, the formation of above-mentioned variable restrictor mechanism comprises: a plurality of pores, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, any one above-mentioned each pore of open and close and change above-mentioned flow path area along with the axle direction displacement of above-mentioned traveller.
4. guiding valve according to claim 1 is characterized in that, the formation of above-mentioned variable restrictor mechanism comprises: a plurality of pores, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, when above-mentioned traveller is positioned at axial half-way, open all above-mentioned each pores, when above-mentioned traveller is displaced to an axial side, closes the part of above-mentioned each pore at least in part and change above-mentioned flow path area.
5. guiding valve according to claim 1 is characterized in that, the formation of above-mentioned variable restrictor mechanism comprises: a plurality of pores, it is arranged on the above-mentioned traveller, and above-mentioned grease chamber between, fluid flows in above-mentioned traveller, flows out; The stream units of variance, it is arranged on above-mentioned valve shell side, when above-mentioned traveller is positioned at axial half-way, open all above-mentioned each pores, when above-mentioned traveller is displaced to an axial side, closes any one above-mentioned each pore at least and change above-mentioned flow path area.
6. according to claim 2,3,4 or 5 described guiding valves, it is characterized in that above-mentioned traveller constitutes the tubular valve body, the axial side of this tubular valve body is piston sliding eye and opening, is communicated with at least one with above-mentioned path of opposite side; Above-mentioned stream units of variance is made of piston, and this piston one side and above-mentioned valve shell form as one or be provided with separately, and opposite side inserts in the above-mentioned piston sliding eye.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008-270563 | 2008-10-21 | ||
| JP2008270563A JP2010101336A (en) | 2008-10-21 | 2008-10-21 | Spool valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101725726A true CN101725726A (en) | 2010-06-09 |
Family
ID=42218982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910205854A Pending CN101725726A (en) | 2008-10-21 | 2009-10-19 | Slide valve |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2010101336A (en) |
| KR (1) | KR20100044116A (en) |
| CN (1) | CN101725726A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635729A (en) * | 2011-02-10 | 2012-08-15 | 通用汽车环球科技运作有限责任公司 | Internally dampened pressure relief valve |
| CN103672024A (en) * | 2012-09-14 | 2014-03-26 | Gce控股公司 | Shut-off valve with reduced ignition |
| CN104324825A (en) * | 2014-10-17 | 2015-02-04 | 宁波李氏实业有限公司 | Spray gun |
| CN105443486A (en) * | 2016-01-29 | 2016-03-30 | 贵阳海之力液压有限公司 | Direct-acting type proportional throttle valve |
| CN107387794A (en) * | 2017-09-11 | 2017-11-24 | 伊之密机器人自动化科技(苏州)有限公司 | Piston type pneumatic control big flow on-off valve |
| CN107435747A (en) * | 2017-08-09 | 2017-12-05 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of civil aircraft actuator mode selector valve |
| CN111911381A (en) * | 2020-07-26 | 2020-11-10 | 中国航发贵州红林航空动力控制科技有限公司 | Nozzle differential pressure valve mechanism with damping piston |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618022B (en) * | 2017-09-14 | 2024-04-26 | 西南交通大学 | Volume speed-regulating hydraulic system and power-assisted lower limb exoskeleton |
-
2008
- 2008-10-21 JP JP2008270563A patent/JP2010101336A/en active Pending
-
2009
- 2009-10-19 CN CN200910205854A patent/CN101725726A/en active Pending
- 2009-10-20 KR KR1020090099481A patent/KR20100044116A/en not_active Application Discontinuation
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635729A (en) * | 2011-02-10 | 2012-08-15 | 通用汽车环球科技运作有限责任公司 | Internally dampened pressure relief valve |
| CN102635729B (en) * | 2011-02-10 | 2015-01-21 | 通用汽车环球科技运作有限责任公司 | Internally dampened pressure relief valve |
| CN103672024A (en) * | 2012-09-14 | 2014-03-26 | Gce控股公司 | Shut-off valve with reduced ignition |
| CN103672024B (en) * | 2012-09-14 | 2017-07-28 | Gce控股公司 | The reduced stop valve of igniting |
| CN104324825A (en) * | 2014-10-17 | 2015-02-04 | 宁波李氏实业有限公司 | Spray gun |
| CN105443486A (en) * | 2016-01-29 | 2016-03-30 | 贵阳海之力液压有限公司 | Direct-acting type proportional throttle valve |
| CN105443486B (en) * | 2016-01-29 | 2017-03-29 | 贵阳海之力液压有限公司 | A kind of direct action type proportional choke valve |
| CN107435747A (en) * | 2017-08-09 | 2017-12-05 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of civil aircraft actuator mode selector valve |
| CN107387794A (en) * | 2017-09-11 | 2017-11-24 | 伊之密机器人自动化科技(苏州)有限公司 | Piston type pneumatic control big flow on-off valve |
| CN107387794B (en) * | 2017-09-11 | 2023-09-15 | 伊之密机器人自动化科技(苏州)有限公司 | Piston type pneumatic control large-flow on-off valve |
| CN111911381A (en) * | 2020-07-26 | 2020-11-10 | 中国航发贵州红林航空动力控制科技有限公司 | Nozzle differential pressure valve mechanism with damping piston |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20100044116A (en) | 2010-04-29 |
| JP2010101336A (en) | 2010-05-06 |
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Open date: 20100609 |