CN100564901C - The valve that the hydraulic prop of shield and shield is used - Google Patents
The valve that the hydraulic prop of shield and shield is used Download PDFInfo
- Publication number
- CN100564901C CN100564901C CNB2004800104471A CN200480010447A CN100564901C CN 100564901 C CN100564901 C CN 100564901C CN B2004800104471 A CNB2004800104471 A CN B2004800104471A CN 200480010447 A CN200480010447 A CN 200480010447A CN 100564901 C CN100564901 C CN 100564901C
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- Prior art keywords
- valve
- valve chest
- joint
- chest
- hydraulic cylinder
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/01—Locking-valves or other detent i.e. load-holding devices
- F15B13/015—Locking-valves or other detent i.e. load-holding devices using an enclosed pilot flow valve
Abstract
The present invention relates to a kind of valve (120), one-way valve especially for the hydraulic prop (3) of the shield in underground mining engineering, its have a valve chest (121) but and a spool that is contained in the switch in this valve chest, this valve also has the joint (126-129) that is used for high pressure pipe line, and having the additional device of being used for such as relief valve, pressure transducer and/or manometric at least one joint (30), described high pressure pipe line is connected with the cylinder chamber and/or the annular chamber of oil hydraulic cylinder (3).Valve chest (121) can be installed on the oil hydraulic cylinder (3), and goes up parallel to an axis in the state lower contact (125-129) of installing at valve chest (121) and extend in the axis of oil hydraulic cylinder (3).According to favourable expansion structure, valve chest can have be used for one can be at least one its sidewall (22B) go up at least one securing means of dismountable fixing additional housing (40), this additional housing is used for the hydraulic pressure miscellaneous function of shield.
Description
Technical field
The present invention relates to a kind of oil hydraulic cylinder that is used for especially at the valve, particularly one-way valve of the hydraulic prop of underground mining engineering.The invention still further relates to a kind of shield.
Background technique
Such valve is for example known by DE 198 13 909A1, is used for being controlled at hydraulic prop on the frame of underground mining engineering as it.The described valve that constitutes one-way valve is used to stop hydraulic fluid unexpectedly to spill in the cylinder chamber of hydraulic prop.When existing when having the hydraulic fluid of pressure recovery in order to reclaim in the annular chamber of shield at hydraulic prop, the one-way valve spool only is unlocked with respect to the cylinder chamber of hydraulic prop then. and valve chest is provided with the pipe coupling of side direction usually in known valve, this has not only caused at valve must select relative long size with the cylinder chamber or the high pressure pipe line between the annular chamber of pillar, and particularly under the less situation of seam thickness of the stope that supports by frame, owing to what link to each other with valve chest, laterally cause current personnel by working surface (streb) time, may be hindered from the outstanding hydraulic pipe line of valve chest.And this known structure also often causes the damage of high pressure hose, thereby may cause dangerous situation, in any case and in fact this situation all should be prevented from.
Summary of the invention
The objective of the invention is to, a kind of valve that starts described form is provided, can be by this valve with the length restriction of the high pressure pipe line between valve chest and plunger to minimum, and can avoid current personnel's obstruction and stop the damage of high pressure pipe line effectively by this valve.
By the oil hydraulic cylinder that is used for of the present invention especially at the valve of the hydraulic prop of underground mining engineering, one-way valve particularly, but it has a valve chest and a spool that is contained in the switch in this valve chest, this valve also has the joint that is used for high pressure pipe line and has at least one and is used for optional equipment such as relief valve, pressure transducer and/or manometric joint, described high pressure pipe line is connected with the cylinder chamber and/or the annular chamber of oil hydraulic cylinder, and wherein valve chest is fixed on the oil hydraulic cylinder; Under described valve was installed in state on the oil hydraulic cylinder, all joints on the valve chest extended on the axis ground of parallel axes in oil hydraulic cylinder.
This purpose reaches by following measure by the present invention, that is, under described valve was installed in state on the oil hydraulic cylinder, the joint shaft line parallel that is used for pipeline and flexible pipe on the valve chest extended in hydraulic cylinder axis ground.Particularly advantageously at this be that under described valve was installed in state on the oil hydraulic cylinder, the joint on the described valve chest was arranged on the valve chest up.
This structure Design allows, and the hydraulic hose between valve chest and the hydraulic cylinder is shortened to minimum on its length.Described then flexible pipe can not extend in the current path again, and the operator of working surface its by the time can not be hindered.Because the length of flexible pipe is little, so can farthest avoid the damage of flexible pipe.
In the favourable expansion structure of the present invention, under the installment state of valve, be complementary, thereby valve chest can not be close on the pillar with having the slit basically towards the inboard external frame of the valve chest of oil hydraulic cylinder with cylinder body.Valve chest is provided preferably with a groove on the inboard of its pillar side, this groove and a fixed plate overlap joint that is provided with on the oil hydraulic cylinder under the installment state of valve.By being installed on the existing fixed plate of script on the pillar, just can install by the older original valve of valve replacement of the present invention in the mode of changing by valve of the present invention.Therefore the more replacing equipment of pillar also can be without a doubt in the maintenance task scope.
Particularly advantageous is that fixed plate has a hydraulic pressure inlet that leads to hydraulic prop cylinder chamber.
Suitably, valve chest is provided with the transverse holes that at least one is used to hold set screw.This set screw passes transverse holes and is screwed on the oil hydraulic cylinder in the tapped hole under in the of one.Usually be provided for four transverse holes of four set screws in the reality, can be simply and realize valve fixing on pillar reliably by these screws.
If the joint on the valve chest is arranged at least on the two-stage step, the lower first step in one of them position is near the inboard of valve chest and the higher second step in position during near the outside of valve chest then obtains a kind of because the particularly advantageous structure of conserve space.Joint on the lower step in position is at a column outer wall and constitute between the connection block of front of higher position second step and protected especially thus.Following structure optimization is suitable; promptly be used for high pressure pipe line and/or manometric joint and be arranged on step approaching, that the position is higher easily; the joint that is used for relief valve and/or pressure transducer then is arranged on the lower step in position, makes relief valve and pressure transducer be provided with to such an extent that be subjected to special protection.The lower step in position can constitute by the milling forming part on the valve chest upper side suitably, and it is simple and quick to make it make thus.
Preferred described joint is furnished with the transverse holes that is provided with in couples respectively, is used to hold U-shaped locking folder, has been proved to be effective as its known hydraulic tubing or hydraulic equipment joint and this of being used for fixing in underground mining engineering.A side that is positioned at the joint opposite of valve chest can have an inclined-plane, and valve chest can be provided with a recess in the higher step region in front in position, these two kinds of measures this moment help to alleviate the weight of valve, and can not produce adverse influence to the reliability of valve.
According to another favourable viewpoint of the present invention, the application possibility that is specifically designed to the valve of one-way valve improves by following measure, promptly, one-way valve particularly its valve chest have at least one be used for one can be on one of sidewall of valve chest the securing means of fixing additional housing removably, this additional valve housing is used for the hydraulic pressure miscellaneous function of shield.By other additional measures, one-way valve can be applied to different shields, and it also has the installation possibility that is used on switch or the control housing simultaneously, borrows it hydraulic tubing and functional element that is used to control the miscellaneous function on the shield can be connected with each other.The precondition that additional housing is installed in the side is that parallel to an axis ground imports high pressure pipe line and joint, because only in this way just there are enough positions to be used for fixing additional housing on the sidewall of valve chest.
In a kind of particularly preferred structure, on two sidewalls of valve chest, can install in order to realize the additional housing of the control function that shield is different.Securing means can be especially by forming in the sidewall of valve chest or according to the tapped hole of preferred structure in the two side.The preferred valve housing is gone up overleaf or have a hydraulic pressure that leads to the cylinder chamber of hydraulic prop on the bottom surface and exports in addition.If hydraulic pressure outlet design particularly in fixed plate, then can be saved an additional hoseline on the back side of valve chest.
In a kind of design, additional housing has the hose coupling and the joint receiving bore of functional element that is used to control the support balance jack of shield, and wherein additional housing has the mounting hole as the pressure distributing valve (Druckschaltventil) of the functional element that is used for the support balance jack is controlled especially.Be used for the control set balance jack corresponding pressure distributing valve working principle and install knownly by DE 35 04 553C1, this is referred to its disclosure.
Selectively, additional housing is provided with the joint receiving bore that is used for functional element, and this functional element is used to control the moving of automatic shifting stand base of shield only.For this reason, but additional housing can have especially for the one-way valve of relief valve and hydraulic pressure opening and in case of necessity one preferably can manually operated reduction valve the joint receiving bore.For the additional housing that will be used for the control set balance jack or the additional housing that is used to promote one of automatic shifting stand base hydraulically be connected with joint on high pressure pipe line or the valve chest, the sidewall of valve chest be provided with a nipple orifice can be inaccessible, that link to each other with the high pressure joint of cylinder chamber, can nipple orifice inaccessible, that link to each other with the annular chamber high pressure joint and/or can be inaccessible, export the nipple orifice that links to each other with hydraulic pressure, make all on off operating modes of one-way valve can be linked into and add in the housing by required function.Conform with the destination, additional then housing in the face of being provided with a connecting passage that is provided with annular chamber-nipple orifice with aiming on the housing sidewall of valve chest.According to function to be controlled, the housing sidewall of additional housing can additionally have a connecting passage that is provided with cylinder chamber-nipple orifice or hydraulic joint-nipple orifice with aiming at.
The preferred in addition one additional housing that is provided with pressurized machine can connect or be connected on the valve chest, particularly be connected on the relative sidewall, and wherein preferred pressurized machine has the amplifier piston of a vibration.The structure of pressurized machine and working principle can be described in detail especially, and be open in DE196 33 258C2 as it, refers to its content clearly at this, in order to replenish current disclosure.Particularly advantageously be, the additional housing that is used for pressurized machine has and is used for one and is connected throttle valve before the pressurized machine low pressure inlet opening and the joint receiving bore that is used for reduction valve, so that keep constant at the stress level at the place, inlet opening of pro rata hydraulic intensifier and pressurized machine amplifier.Can second nipple orifice obturation, that link to each other with cylinder chamber high pressure pipe line if the sidewall of valve chest has first nipple orifice can be inaccessible, that link to each other with the hydraulic pressure outlet with one, this installation for the additional housing that has pressurized machine is particularly advantageous.
The bottom surface of valve chest preferably can have an inclined-plane, thereby can make hydraulic prop retraction and decline in case of necessity, and valve chest can not hinder descending motion.
The invention still further relates to a kind of shield that constitutes as previously described, it comprise two automatic shifting stand bases, a back timber, with respect to the telescopic hydraulic prop and of the described back timber of automatic shifting stand base support attach troops to a unit in each hydraulic prop by one-way valve of the present invention.
Description of drawings
Other features and advantages of the present invention draw from the following description and drawings, wherein illustrate in greater detail preferred implementation of the present invention by example.In the accompanying drawing:
Fig. 1 illustrates the side view of a hydrolic shield with reduced graph signal ground, this hydrolic shield have one be fixed on the hydraulic prop, by the one-way valve that first embodiment designs, this one-way valve has the additional housing of having installed;
Fig. 2 schematically illustrates one with the view in one-way valve housing front and has the one-way valve in order to the additional housing of the support balance jack on the control shield that has assembled;
Fig. 3 illustrates the plan view of one-way valve among Fig. 2;
The hydraulic structure that Fig. 4 illustrates the hydraulic structure of one-way valve with the hydraulic pressure Block Diagram and is used for the additional housing in the connection of control set balance jack;
Fig. 5 illustrates the hydraulic pressure Block Diagram of one-way valve, and this one-way valve has the additional housing and the additional housing that is used for pressurized machine that is installed in the right side that only are used to control the automatic shifting stand base that is installed in the left side;
Fig. 6 illustrates by one-way valve of the present invention and is in the front view that is installed in the state on the hydraulic prop, and it is not with additional housing by second embodiment;
Fig. 7 illustrates the plan view of object among Fig. 6, but not at high pressure pipe line shown in Fig. 6 and optional equipment; And
Fig. 8 illustrates the side view of object among Fig. 6.
Embodiment
Fig. 1 illustrates the shield 1 of a hydraulic pressure with reduced graph signal ground, and it is in the underground mining operation, particularly use in the working face equipment operation of exploiting the colliery.Shield 1 comprises two automatic shifting stand bases 2 that be arranged in parallel side by side on shield 1 bottom position, on this automatic shifting stand base, support the oil hydraulic cylinder or the hydraulic prop 3 of a telescopic and bilateral available hydraulic pressure-loaded respectively, be used for its lower end supporting top beam 4.Be hinged on the back timber 4 at filling side one caving shield 5, this caving shield 5 is endured arm (Lenker) 6 by two respectively and is connected with automatic shifting stand base 2, so that can guide back timber 4 by the mode of lemniscate transmission highly pivotally with respect to automatic shifting stand base 2.But the support balance jack (Eckzylinder) 7 that a bilateral loads is set between the caving shield 5 of shield support and back timber 4, can changes the angular orientation of back timber 4 by this support balance jack.
In order to control the difference in functionality of shield 1, on the bottom surface of back timber 4, fix a hydraulic control box 8 or an electronic controller 9, but wherein can operate the pilot valve that is arranged on the electrically operated in the control box 8 by the control signal of electronic controller 9.One wholely mark being provided with on the leading flank of working surface of the cylinder body of hydraulic prop 3 with 20, valve chest 21 by one-way valve of the present invention, this valve chest hold one in the view of Fig. 1 the spool (Ventileinsatz) of the one-way valve of horizontal positioned, and find out as knowing among Fig. 1, the axis A that the joint of this valve chest is parallel to hydraulic prop 3 extends, and makes hoseline feed one-way valve 20 as the axis A that the high pressure pipe line 11 in the cylinder chamber that is used for hydraulic prop 3 or the high pressure input pipeline 12 that leads to the annular chamber of hydraulic prop 3 can be parallel to hydraulic prop 3 equally.As it can also be seen that in Fig. 1, one-way valve 20 has hydraulic pressure outlet on the back side of being close to hydraulic prop 3 cylinder bodies, and this hydraulic pressure outlet is led to the cylinder chamber joint 14 that schematically illustrates by the input channel 13 that is provided with on the wall of hydraulic prop 3.Annular chamber joint 15 is arranged on the outside and is arranged on the side of hydraulic prop 3.Realize loading annular chamber with hydraulic fluid by the independent valve of handling in control box 8 and by high pressure pipe line 17, be used to reclaim hydraulic prop, described high pressure pipe line leads to one-way valve 20 and is re-routed to input pipeline 12 there in inside.
Being controlled in the additional housing that is provided with on the rear sidewall of the valve chest 21 of one-way valve 20 of the predetermined function of support balance jack 7 realizes that this additional housing has other hydraulic function element and hoseline 16.In Fig. 1, removably fix other an additional housing 40 on the front panel of the valve chest 21 of one-way valve 20, a hydraulic intensifier that has an amplifier piston of vibration is set in this additional housing.
Fig. 2 and Fig. 3 illustrate the one-way valve 20 that is under the state that is installed on the hydraulic prop 3, and wherein hoseline and hydraulic tubing do not illustrate, and do not fix additional housing on the right side wall 22A of valve chest 21.As especially as shown in Fig. 3, valve chest 21 comprises the step 25 of a higher step in the position of a front 24 and a back, the pipe coupling of leading to the cylinder chamber 26 that wherein is used for high pressure pipe line is arranged on the central authorities of top step 24, and two pipe couplings 27 that are used for high pressure pipe line and input pipeline and 28 of leading to hydraulic prop 3 annular chambers are set on its next door.In addition valve chest 21 comprise on the step 24 up one be used for manometric joint 29, another be used for hand control valve joint 30 and the back, the position comprises a joint 31 and a joint 32 that is used for pressure transducer that is used for relief valve on than low degree 25.Valve chest 21 is provided with an inclined-plane in the front side to the transition position of rear side.
On the left side wall 22B of valve chest 21, removably fix a support balance jack (7 that is used to control shield, additional housing 50 Fig. 1), wherein set screw 18 is as securing means, and it is passed in the tapped hole 19 on the sidewall 22B that hole on the additional housing 50 is screwed into valve chest 21.On sidewall 22A, design the respective threads hole too, so as can fastening there another additional housing as particularly having the additional housing of pressure amplifier.Additional housing 50 includes the step 51 of a front and the step 52 of a back again, and described step has the hose coupling 54 that joint receiving bore 53 and is used for different functional element, so that the support balance jack of control shield.Joint receiving bore 53 and the hose coupling 54 parallel axes joint 26 to 32 in valve chest 21 extends, and therefore also parallel axes is extended in the axis of hydraulic prop 3.If tension is on the support balance jack, and will be adjusted to the set pressure of less for example 100bar at the pressure of doing the time spent of relief valve then, then but the joint receiving bore 53 that designs on additional housing 50 upsides and downside and one aim at the pressure distributing valve that a hydraulic control is set in the deep hole of formation with the joint receiving bore, and it is opened in the callback course of shield.If mutually near the time back timber change in callback course with respect to the angular orientation of automatic shifting stand base, then pressure distributing valve with back timber (4, Fig. 1) remain on the position of having occupied, and allow adaptive simultaneously.This pressure distribution valve arrangement that is used for the support balance jack is at length introduced at DE 35 04 553C2, and it is cited so that current disclosure is complete.
Fig. 4 illustrates the hydraulic pressure Block Diagram by the one-way valve of Fig. 2 and Fig. 3, and this one-way valve has the pressure distributing valve 75 in additional housing 50 is provided with, and makes an explanation with reference to the internal structure of Block Diagram to Fig. 2 and one-way valve 20 shown in Figure 3.From this Block Diagram, be used for hydraulic prop annular chamber (P as can be seen
B) pipe coupling 27 and 28 and be used for hydraulic prop 3 cylinder chamber (P
A) the pipe coupling 26 of sinking pressure-high pressure pipe line.The hydraulic pressure outlet 36 of leading to the cylinder chamber illustrates on the back side of valve chest 21.On joint 30, connect a stop valve 70, on joint 31, connect a pressure gauge 71, on joint 29, connect a relief valve 72, and on joint 32, connect a pressure transducer 73.On the inner walls 22A on right side, by plug obturation not shown further among the figure not only with hydraulic pressure outlet 36 nipple orifice that link to each other 35 but also the nipple orifice 61 that links to each other with pipe coupling 26.Also thereby between high pressure entry 26 and hydraulic pressure outlet 36 one-way valve sail core 34 is being set between the nipple orifice 35,61, this one-way valve spool can only hydraulically be opened by the hydraulic fluid of annular chamber (Pa) when pressure recovery.Nipple orifice 61, nipple orifice 63 that is connected with annular chamber high pressure pipe line joint 28 and one and hydraulic pressure outlet 36 control channels 64 that are connected with nipple orifice 35 are led to the sidewall 22B of valve chest 21, on this sidewall, be provided with can hydraulic operated pressure distributing valve 75 additional housing 50.In order to control angle valve, in additional housing 50, constitute the connecting passage 55 that leads to shell body wall 57, in order to pilot pressure distributing valve 75 and 56 with the nipple orifice 64,63 of leading to sidewall 22B in desirable mode with aiming at.Optional and by inaccessible to the connection of nipple orifice 61 for additional housing 50.
Fig. 5 illustrates an one-way valve 20 with another Block Diagram, on the valve chest 21 of this one-way valve, the one additional housing 40 with pressurized machine is fixed on the sidewall 22A, and one has the additional housing 80 that is used to realize the functional element that the automatic shifting stand base promotes and is fixed on sidewall 22B.One-way valve 20 has as identical joint and functional element described in figure 4, therefore just no longer carries out description again at this.In the additional housing 40 be fixed on valve chest 21 sidewall 22A by set screw on, the housing sidewall 41 of pointing to valve chest 21 is provided with one first connecting passage 42, this first connecting passage is aimed at ground with the nipple orifice 61 of the high pressure joint 26 of leading to hydraulic prop cylinder chamber directed, and design has one second connecting passage 43, and this second connecting passage is aimed at the ground orientation with the nipple orifice 35 of leading to hydraulic pressure outlet 36.Connecting passage 42 constitutes the inlet of pressurized machines 44 and connecting passage 43 constitutes the outlet of pressurized machines, and this pressurized machine has the amplifier piston of a vibration not shown further, for example is described in DE 196 33 258C1 as it.Hydraulically connected a relief valve 45 and a throttle valve 46 before pressurized machine 44, wherein they are arranged in the additional housing 40 equally.Can be amplified to almost high high pressure arbitrarily with the stress level at 42 places, inlet opening pro rata by pressurized machine 44 hydraulic fluids.
But comprise the one-way valve 81 of a hydraulic pressure opening by the additional housing 80 of suitable screw on sidewall 22B, if its via the connecting passage 82 that on valve casing body wall 87, feeds nipple orifice 61 by hydraulic fluid to be used for hydraulic prop cylinder chamber (P
A) sinking pressure (Setzdruck) control, then this one-way valve can be unlocked.Play one-way valve 81 to close connecting passage 83 in off position, this connecting passage is designed to aim at the nipple orifice 63 of leading to annular chamber-high pressure pipe line joint 28.One-way valve 81 is furnished with a stop valve 84 in the suitable joint receiving bore on additional housing 80, and is furnished with a relief valve 85 in another joint receiving bore, and additional housing 80 has a pipe coupling 86 of leading to the hydraulic prop annular chamber.Can promote an automatic shifting stand base by the functional element that in additional housing 80, is provided with.
Wholely in Fig. 6 to Fig. 8 be used to control the hydraulic prop 3 of hydraulic pressure frame again, be applied to force piece in the underground mining engineering as it with 120 one-way valves that mark.Valve 120 is not provided with the additional housing that is used to control additional function in an illustrated embodiment.
But one-way valve 120 consists essentially of the spool that a valve chest 121 and is contained in switch wherein, and the axis of this spool is arranged in the valve chest 121 interior substantially horizontal holes with 133 marks and this spool.Valve chest is provided with joint 125,126,127,128 and 129, the device that these joints are used for different high pressure pipe line 112,111 and are used to add, in current embodiment, be used for relief valve 212, pressure transducer 213 and pressure gauge 214, wherein relate to such structure, promptly all joints 125 to 129 all are positioned on the upside 215 of valve chest and parallel axes is arranged in the axis 216 of hydraulic prop.Be arranged on the valve chest 121 on two steps at this different joint different heights, wherein the overflow joint 129 that is used for the joint 128 of valve 212 and is used for pressure transducer 213 is positioned at and is on the lower first step in position 117 near valve chest 121 inboard 180 places that point to hydraulic prop 3, and on being positioned at, three joints 125,126,127 are set side by side in a row, two high pressure pipe lines 111,112 and pressure gauge 214 that these joints are used to lead to the cylinder chamber and lead to hydraulic prop 3 annular chambers near valve chest outside step 124 190, that the position is higher.Being positioned at lower step 117 is not the whole width that runs through valve chest 121 fully at this, but constitute by milling forming part 210, this milling moulding section do not begin from the both sides of valve chest up to a degree of depth make, this degree of depth allows to hold the plug spare of device to be connected.
In order to protect high pressure pipe line 111,112 and other devices 212,213,214; these devices have respectively plug spare 112 on its joint 125 to 129 ', 111 ', 212 ', 213 ', 214 '; they are furnished with the transverse holes 222 of paired setting respectively; in this transverse holes, can insert U-shaped locking folder 223; this U-shaped locking folder is embedded in the groove of plug spare with two side leg under the state that inserts; and their such shapes are locked in the joint sealedly, as it known in the mining industry hydraulic equipment.
As everyone knows, valve chest 121 is fixed on the hydraulic prop 3.Be provided with a groove 224 on the pillar side inner side surface 180 that the external frame of itself and pillar 3 is complementary, this groove and is arranged on fixed plate 175 overlap joints on the hydraulic prop 3 for this reason.Fixed plate is by the pattern design to the diminishing dovetail groove guide rail of upper trapezoid, and groove 224 is complementary with this shape.Therefore valve chest can be pushed into from above on the fixed plate 175 by its groove 224, reclines mutually in pushing course up to the trapezoidal diminishing side 176 and 177 of groove 224 and fixed plate 175 and stops further promotion.Then the side direction of fixed plate protrude in seamed edge swallow-tail form, the front 178 stop valve chests can lie across boom shaft in the side from wherein being pulled out.
When valve chest fully is pushed on the fixed plate with its groove, for standing valve housing 121 additionally on pillar, valve chest be provided with four be arranged on fixed plate in the tapped hole transverse holes 139 of aiming at.Set screw can pass transverse holes and is screwed in the tapped hole on the fixed plate then.
For weight reduction, valve chest is provided with an inclined-plane 130 on itself and described joint opposed bottom surface and front.For the same reason, a recess 231 is set in the zone before the higher step in position, this groove guarantees one-way valve structures light and compact especially and that only slightly outwards give prominence to from the pillar surface together with inclined-plane 130.
As everyone knows, because all joints 125 to 129 are arranged on the upper side of valve chest, the high pressure pipe line and other assembly axis line parallels that are installed on the joint are outstanding in the hydraulic prop axis of valve chest, with respect to known structure, this structure allows to shorten the length of the flexible pipe that leads to pillar cylinder chamber and annular chamber, and this particularly makes flexible pipe eliminate from the current path that is used for operator, to avoid hindering operator and also to reduce the danger that flexible pipe damages.
For a person skilled in the art, draw a series of flexible programs from the foregoing description, they should belong to protection scope of the present invention.Can not add housing or have additional housing described above to be fixed on the one-way valve with any approaching combination.The additional housing that also can fixedly have in addition, other functions.One-way valve can be provided with other nipple orifice or be provided with still less nipple orifice.
Claims (30)
1. valve that is used for oil hydraulic cylinder, but this valve has a valve chest and a spool that is contained in the switch in this valve chest, this valve also has the joint that is used for high pressure pipe line, and has a joint that at least one is used for additional device, described high pressure pipe line is connected with the cylinder chamber and/or the annular chamber of oil hydraulic cylinder, and wherein valve chest is fixed on the oil hydraulic cylinder, it is characterized in that, under described valve is installed in state on the oil hydraulic cylinder (3), valve chest (21; 121) all joints (26,27,28,29,30,31,32 on; 125,126,127,128,129) parallel axes is extended in the axis of oil hydraulic cylinder (3) (216).
2. according to the described valve of claim 1, it is characterized in that described valve is the one-way valve that is used at the oil hydraulic cylinder of underground mining engineering shield.
3. according to the described valve of claim 2, it is characterized in that described additional device is relief valve, pressure transducer and/or pressure gauge.
4. according to the described valve of claim 2, it is characterized in that, under described valve is installed in state on the oil hydraulic cylinder (3), valve chest (21; 121) all joints (26,27,28,29,30,31,32 on; 125,126,127,128,129) be arranged on up on the valve chest (21,121).
5. according to claim 2 or 3 described valves, it is characterized in that valve chest (21; 121) at valve (20; 120) be complementary towards the inner side surface (180) of oil hydraulic cylinder (3) and the external frame of oil hydraulic cylinder (3) under the installment state.
6. according to the described valve of claim 2, it is characterized in that valve chest (21; 121) on the inner side surface (180) of its pillar side, be provided with a groove (38; 224), this groove is at valve (20; 120) overlap with a fixed plate (175) that is arranged on the oil hydraulic cylinder (3) under the installment state.
7. according to the described valve of claim 6, it is characterized in that described fixed plate has a hydraulic pressure inlet that leads to oil hydraulic cylinder cylinder chamber.
8. according to claim 6 or 7 described valves, it is characterized in that valve chest (21; 121) be provided with the transverse holes (39 that at least one is used to hold a set screw; 139), this set screw passes transverse holes and is screwed in the tapped hole under the oil hydraulic cylinder (3) last and/or is screwed on fixed plate (175) and the tapped hole that transverse holes is aimed at.
9. according to the described valve of claim 3, it is characterized in that valve chest (21; 121) all the joint (26-32 on; 125-129) be arranged on two steps the first step (25 that one of them position is lower at least; 117) near valve chest (21; 121) inner side surface (180) and the second step (24 that the position is higher; 124) near valve chest (21; 121) outer side surface (190).
10. according to the described valve of claim 9, it is characterized in that, be used for high pressure pipe line (11,12,17; 111,112) and/or the joint that is used for pressure gauge (214) be arranged on the higher second step in described position (24; 124) on.
11., it is characterized in that the joint that is used for relief valve (212) and/or is used for pressure transducer (213) is arranged on the lower first step in described position (117) according to claim 9 or 10 described valves.
12., it is characterized in that the lower first step (117) in described position constitutes by the milling forming part (210) on the upper side (215) of valve chest (121) according to claim 9 or 10 described valves.
13., it is characterized in that the joint that is used for high pressure pipe line and additional device is furnished with the transverse holes (222) of paired setting respectively according to claim 2 or 3 described valves, be used to hold U-shaped locking folder (223).
14., it is characterized in that the side that the joint with being used for high pressure pipe line and additional device of valve chest (121) is relative has an inclined-plane (130) according to claim 2 or 3 described valves, and/or the bottom surface of valve chest (21) has an inclined-plane.
15., it is characterized in that valve chest (121) is provided with a recess (231) according to the described valve of claim 9 in the preceding zone of the higher second step in position (124).
16., it is characterized in that described one-way valve has at least one securing means according to the described valve of claim 2, be used for an additional housing (40 that can removably be fixed on one of the sidewall (22A, 22B) of valve chest (21); 50; 80), this additional housing is used for the hydraulic pressure miscellaneous function of shield.
17., it is characterized in that described securing means is included in the sidewall of valve chest (21) or the tapped hole (19) in two sidewalls (22A, 22B) of valve chest (21) according to the described valve of claim 16.
18., it is characterized in that valve chest (21) overleaf or have a hydraulic pressure outlet (36) of leading to oil hydraulic cylinder (3) cylinder chamber on the bottom surface according to claim 16 or 17 described valves.
19. according to claim 16 or 17 described valves, it is characterized in that, described additional housing (50) has a hose coupling (54) and some the joint receiving bores (53) that is used for functional element, and described functional element is used to control a support balance jack (7) of shield (1).
20., it is characterized in that described additional housing (50) has a nipple orifice that is used for a pressure distributing valve (75) according to the described valve of claim 19, this pressure distributing valve is as the functional element in order to the control set balance jack.
21., it is characterized in that described additional housing (80) is provided with the joint receiving bore that is used for functional element according to claim 16 or 17 described valves, described functional element is used for only controlling the moving of an automatic shifting stand base (2) of shield (1).
22., it is characterized in that described additional housing (80) has and is used for a relief valve (85) but and the joint receiving bore of the one-way valve of a hydraulic pressure opening (81) according to the described valve of claim 21.
23. according to the described valve of claim 18, it is characterized in that, one sidewall (22B) of described valve chest (21) is provided with a cylinder chamber-nipple orifice (61) can be inaccessible, that link to each other with the high pressure joint that is used for the cylinder chamber (26), and/or be provided with an annular chamber-nipple orifice (63) can be inaccessible, that link to each other with the high pressure joint that is used for annular chamber (28), and/or be provided with one can obturation, export the hydraulic pressure outlet-nipple orifice (64) that (36) link to each other with hydraulic pressure.
24., it is characterized in that described additional housing (50 according to the described valve of claim 23; 80) at valve casing body wall (57 towards valve chest (21); 87) be provided with a connecting passage (56 of aiming at setting with annular chamber-nipple orifice (63); 83).
25., it is characterized in that described additional housing (50 according to the described valve of claim 24; 80) valve casing body wall (57; 87) additionally has a connecting passage (82 of aiming at setting with cylinder chamber-nipple orifice (61) and/or hydraulic pressure outlet-nipple orifice (64); 55).
26. according to claim 16 or 17 described valves, it is characterized in that, an additional housing (40) that is provided with a pressurized machine (44) can connect or be connected on the sidewall (22A) of valve chest (21), and wherein pressurized machine (44) has the amplifier piston of a vibration.
27., it is characterized in that described additional housing (40) has and is used for one and is connected the throttle valve (46) before the pressurized machine inlet and/or is used for a joint receiving bore that is connected the reduction valve (45) before the pressurized machine according to the described valve of claim 26.
28. according to the described valve of claim 18, it is characterized in that the sidewall (22A) of described valve chest (21) has a hydraulic pressure outlet-nipple orifice can be inaccessible, that link to each other with hydraulic pressure outlet (36) can cylinder chamber-nipple orifice (61) inaccessible, that link to each other with the high pressure joint that is used for the cylinder chamber (26) with one.
29., it is characterized in that described hose coupling (54) and joint receiving bore (53) parallel axes are extended in oil hydraulic cylinder (3) according to the described valve of claim 19.
30. a shield, it comprise two automatic shifting stand bases (2), a back timber (4), with respect to automatic shifting stand base (2) support described back timber, telescopic oil hydraulic cylinder (3) and attaches troops to a unit in the one-way valve (20 of each oil hydraulic cylinder; 120), it is characterized in that described one-way valve (20; 120) constitute according to one of claim 2 to 29.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20307245U DE20307245U1 (en) | 2003-05-08 | 2003-05-08 | Return valve for a hydraulic cylinder has a connector (5-9) which attached to the valve housing (3) in the hydraulic cylinder (2) in a fixed position parallel to the axis (16) of the cylinder |
| DE20307245.6 | 2003-05-08 | ||
| DE20309693.2 | 2003-06-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1777758A CN1777758A (en) | 2006-05-24 |
| CN100564901C true CN100564901C (en) | 2009-12-02 |
Family
ID=27740910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800104471A Expired - Fee Related CN100564901C (en) | 2003-05-08 | 2004-05-05 | The valve that the hydraulic prop of shield and shield is used |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100564901C (en) |
| DE (1) | DE20307245U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465061A (en) * | 2014-09-30 | 2016-04-06 | 丹佛斯动力系统有限公司 | Hydraulic system |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032233B (en) * | 2011-01-08 | 2013-05-15 | 四川省宜宾普什驱动有限责任公司 | Multifunctional proportional multi-way valve |
| CN104675423B (en) * | 2015-02-06 | 2017-01-18 | 太原理工大学 | Two-channel kiloliter-level large-flow reversing valve |
| CN104695987B (en) * | 2015-02-13 | 2017-07-07 | 煤炭科学技术研究院有限公司 | Hydraulic support hydraulic control one-way valve |
| CN106438561A (en) * | 2016-11-02 | 2017-02-22 | 常州市双强机械制造有限公司 | Water conservancy hydraulic machine sleeve-division oil cylinder special-shaped forge piece |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673800A (en) * | 1970-06-12 | 1972-07-04 | Philip E Ashton | Hydraulic press |
| DE3504553C1 (en) * | 1985-02-11 | 1986-04-10 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Pressure switching valve as a pressure relief valve for hydraulic step extension |
| CN1149664A (en) * | 1995-08-02 | 1997-05-14 | Dbt德国采矿技术有限公司 | Hydraulic shield support |
| DE19633258C1 (en) * | 1996-08-17 | 1997-08-28 | Iversen Hydraulics Aps | Pressure-booster particularly for hydraulic fluid |
| EP0930130A2 (en) * | 1998-01-16 | 1999-07-21 | DE-STA-CO Metallerzeugnisse GmbH | Clamping device |
| CN1279340A (en) * | 1999-06-30 | 2001-01-10 | 萨尔技术股份有限公司 | Shield supports for having influence on edge of roof caving |
| DE20301251U1 (en) * | 2003-01-28 | 2003-04-03 | Festo Ag & Co | Fluid-activated, especially pneumatic, linear drive device, comprises adapter pieces for mounting modular control unit on drive unit |
-
2003
- 2003-05-08 DE DE20307245U patent/DE20307245U1/en not_active Expired - Lifetime
-
2004
- 2004-05-05 CN CNB2004800104471A patent/CN100564901C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3673800A (en) * | 1970-06-12 | 1972-07-04 | Philip E Ashton | Hydraulic press |
| DE3504553C1 (en) * | 1985-02-11 | 1986-04-10 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Pressure switching valve as a pressure relief valve for hydraulic step extension |
| CN1149664A (en) * | 1995-08-02 | 1997-05-14 | Dbt德国采矿技术有限公司 | Hydraulic shield support |
| DE19633258C1 (en) * | 1996-08-17 | 1997-08-28 | Iversen Hydraulics Aps | Pressure-booster particularly for hydraulic fluid |
| EP0930130A2 (en) * | 1998-01-16 | 1999-07-21 | DE-STA-CO Metallerzeugnisse GmbH | Clamping device |
| CN1279340A (en) * | 1999-06-30 | 2001-01-10 | 萨尔技术股份有限公司 | Shield supports for having influence on edge of roof caving |
| DE20301251U1 (en) * | 2003-01-28 | 2003-04-03 | Festo Ag & Co | Fluid-activated, especially pneumatic, linear drive device, comprises adapter pieces for mounting modular control unit on drive unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105465061A (en) * | 2014-09-30 | 2016-04-06 | 丹佛斯动力系统有限公司 | Hydraulic system |
| US10087957B2 (en) | 2014-09-30 | 2018-10-02 | Danfoss Power Solutions Aps | Hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE20307245U1 (en) | 2003-08-07 |
| CN1777758A (en) | 2006-05-24 |
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