CN206439242U - Stone machine is automatically split based on buffering hydraulic super-pressure hydraulic control check valve - Google Patents

Abstract

The utility model discloses one kind is simple in construction, it is easy to control, operating efficiency is higher, split stone effect more preferable, continuity is stronger, and it is pollution-free, it is noiseless, and more convenient full-automatic based on buffering hydraulic super-pressure hydraulic control check valve of control of relief valve splits stone machine, it includes hydraulic station, it is several to split stone rod, hydraulic tube, check valve and relief valve, connected between hydraulic station and check valve by hydraulic tube, check valve is connected between stone rod with each described split by hydraulic tube, exported with realizing the fluid in hydraulic station to stone rod one direction is respectively split, respectively split and connected between stone rod and relief valve by hydraulic tube, connected between relief valve and hydraulic station by two hydraulic tubes, each stone rod that splits is during ejection, the relief valve is in closed mode, each stone rod that splits is during contraction, wherein one hydraulic tube realizes the unlatching of the fluid control relief valve in hydraulic station, an other hydraulic tube realizes that the fluid respectively split in stone rod is back to hydraulic station.

Description

Stone machine is automatically split based on buffering hydraulic super-pressure hydraulic control check valve

Technical field

The utility model is related to one kind, it particularly relates to a kind of simple in construction, easy to control, operating efficiency is higher, splits More preferably, continuity is stronger, and pollution-free, noiseless for stone effect, and the control of relief valve is more convenient based on buffer solution The full-automatic of pressure super-pressure hydraulic control check valve splits stone machine.

Background technology

It is the new construction equipment that rock splits off from big ground to split stone equipment, at present, and most of construction is used Non- blasting construction method, i.e., using warding off, stone implement, swelling agent, broken kind equipment (such as quartering hammer), hook machine, rope are sawed, disk is sawed, flame Cutting and Water Cutting equipment operation.

Rope saw, disk saw, gas flame cuttiug, Water Cutting belong to face processing form of construction work, it is necessary to cut whole section on rock, Efficiency is very low, and energy consumption is big, and disk saws disposable less investment, in many small-scale, soft rockmass (uniaxial compressive strength is not more than 50MPa) Construction site is relatively adapted to；Rope saw uses diamond, and use cost is expensive, is usually used in being worth higher stone material cutting.As for Gas flame cuttiug and Water Cutting, depth of cut are all little, and expensive, energy consumption is big, inefficient, in the construction of common rocks It is upper, basic without using.

Point processing class method (method that need not be processed rock using face is separated from the earth), there is four kinds of ratios at present More typically, it is specific as follows：Swelling agent, disposable input cost is low, but construction interval most needs could complete one half a day soon every time It is secondary, it is inefficient, and influenceed greatly by weather and ground environment, due to being, using lime as primary raw material, to easily cause Soil Surrounding Alkalization, as thermal expansion agent, makes the non-explosion class edge walked to produce explosion effect, certain earthquake intensity is not so good as explosive, but not Belong to non-explosion class method；Stone implement is warded off, this equipment is numerous in China's manufacturer, but because power is small, wedge is a consumable accessory, Too high pressure can not be not only born, construction cost height is also resulted in, is used for the twice decomposition of rock, also has for rock once Property excavate, but efficiency and construction cost can not show a candle to split stone machine, and the disposable excavation market of rock uses warding off stone implement and few；Hook Machine, is a kind of good rock splitter, is particularly suitable for the construction that crack is a lot, globality is poor, rock is softer Institute, simply disposable input cost is too high, in the occasion that crack is less, hardness is high, it is virtually impossible to use；Broken kind equipment most allusion quotation Type be exactly excavator quartering hammer, as hook machine, to hard rock and the preferable rock of globality, efficiency of construction is differential, but by In its flexibly, it is easy, be also a kind of most commonly seen equipment, be still that rock disposably excavates most widely used equipment at present, Cost is exactly that low efficiency, high energy consumption, construction cost are big.

In hydraulic tool field, at present at home using superhigh pressure technique than wide, but its check valve is all integrated in On gas drive liquid pump, and through-current capacity is small, because flow during its low pressure is not over 5 liters/min, when pressure is higher than 100MPa When, its flow is substantially all below 1 liter/min, so the latus rectum very little of check valve, for small latus rectum valve (4mm latus rectums and with Under), it is easily done super-pressure, and 200MPa, the check valve of 6 latus rectums, it is sealed, longer seat life, it is difficult to overcome to be Difficulty.In addition, hydraulic pressure super-pressure (100MPa and more than) element of big flow fails to break through at present, main asking of facing at present Topic is material and Heat-treatment Problem, and under 100MPa and above superelevation pressure condition, material can be deformed, then high size and position essence Degree, before deformation plance, can not all keep, the corresponding precision-fit of Hydraulic Elements is not to be killed, and exactly occurs sealing and the life-span Problem.

In normal pressures (under 50MPa) Hydraulic Field, we have been generally acknowledged that hydraulic oil is incompressible, but with pressure The increase of power, when particularly pressure reaches 200MPa, hydraulic oil can have more than more than 10% decrement, when surpassing for hydraulic system During the direct pressure release of high pressure, because pressure difference is too big, the fluid that this part is compressed can be released with high flow velocity, not only can be to valve Part produces erosion, also allows fluid to produce gasification phenomenon, and in fluid a large amount of bubbles increase, always have a small number of bubbles and enter and pressurize Circulation, forms miniature one by one " bomb " and is pressed quick-fried in hydraulic system, destruction is produced to extra high voltage system.This phenomenon, It is especially prominent in the incipient stage of pressure release, it is the problem that hydraulic pressure super-pressure application field is extremely had a headache, in order to avoid this is asked Topic, generally requires to apply super-pressure back pressure on leakage passage, not only increases cost, also allow draining time lengthening, super in hydraulic pressure High pressure field, the ultra-high pressure solenoid valve that can be bought in the market, maximum normal working pressure can only achieve 70MPa, when During higher pressure, without corresponding solenoid directional control valve product, 70MPa hydraulic pressure extra high voltage system realizes that automation is extremely difficult, special It is not the hydraulic pressure extra high voltage system for having gone up more than 100MPa, can not be realized automatically control with conventional hydraulic loop means at present.

Utility model content

Deficiency for more than, the utility model is simple in construction there is provided one kind, and easy to control, operating efficiency is higher, splits More preferably, continuity is stronger, and pollution-free, noiseless for stone effect, and the control of relief valve is more convenient based on buffer solution The full-automatic of pressure super-pressure hydraulic control check valve splits stone machine, it include hydraulic station, at least one split stone rod, hydraulic tube, check valve and Relief valve, is connected between the hydraulic station and check valve by hydraulic tube, check valve and each described is split between stone rod by liquid Pressure pipe is connected, to realize that the fluid in hydraulic station, to the output of stone rod one direction is respectively split, is respectively split between stone rod and relief valve by liquid Pressure pipe is connected, and is connected between relief valve and hydraulic station by two hydraulic tubes, each stone rod that splits is described to let out during ejection Pressure valve is in closed mode, and each stone rod that splits is during contraction, wherein a hydraulic tube realizes the fluid control in hydraulic station The unlatching of relief valve, the fluid that a hydraulic tube realization is respectively split in stone rod in addition is back to hydraulic station.

In order to further realize the utility model, the relief valve includes the second valve body, the second check valve, pressure release piston body With pressure release push rod, the centre of second valve body is formed with interconnected the second cavity volume and the 3rd cavity volume, second cavity volume Positioned at the underface of the 3rd cavity volume, the bottom of the second valve body is provided with the second entrance being connected with the second cavity volume, described second Entrance is communicated to by hydraulic tube splits stone rod, and the top of the second valve body is provided with the pressure relief opening being connected with the 3rd cavity volume, pressure release Mouth is communicated to hydraulic station by hydraulic tube；The side wall of second valve body is provided with the second outlet being connected with the 3rd cavity volume, second Outlet is communicated to hydraulic station by hydraulic tube；Second check valve is fixedly mounted in the second cavity volume, the second check valve and Seal and coordinate between two cavity volumes, the input of the second check valve is connected with second entrance, the output end of the second check valve and the Three cavity volumes are connected；The pressure release piston body is slidably installed in the 3rd cavity volume, and can be slided up and down along the 3rd cavity volume, pressure release piston Set between body and the second valve body for sealing；The pressure release push rod is in longitudinally disposed, and the top of pressure release push rod is fixedly connected with pressure release Piston body, the bottom for the bar that bears down on one can be extend into the second check valve, and pressure release push rod can the slowly envelope of the check valve of jack-up second upwards Stifled body.

In order to further realize the utility model, the bottom of the pressure release push rod is provided with the occluding body with the second check valve The supporting part of shape adaptation.

In order to further realize the utility model, second check valve includes the 3rd valve body, second spring seat, the second bullet Spring and the second plugging steel ball, the 3rd valve body are fixedly mounted in the second cavity volume, are close between the 3rd valve body and the second valve body Envelope is set, and the centre of the 3rd valve body is formed with the 4th cavity volume, and the top of the 3rd valve body is provided with the be connected with the 4th cavity volume Three outlets, the 3rd outlet is connected with the 3rd cavity volume, and the 3rd outlet and the link position of the 4th cavity volume are provided with the second closure Portion, the bottom of the 3rd valve body is provided with least one the 3rd entrance being connected respectively with the 4th cavity volume, all 3rd entrances point It is not connected with second entrance, second spring seat is arranged on the position for corresponding to the 3rd outlet in the 4th cavity volume, described the Two springs are arranged on second spring seat, and second plugging steel ball is arranged on the 3rd outlet and second spring as occluding body Between, to cause the second plugging steel ball tight against firmly the second closure part, to match somebody with somebody between the second plugging steel ball and the second closure part for sealing Close.

In order to further realize the utility model, second plugging steel ball is spheroid, and second closure part is spheroid A part.

In order to further realize the utility model, the quantity of the 3rd entrance is multiple, and all 3rd entrances are in annulus Shape is spacedly distributed.

In order to further realize the utility model, the stone rod that splits includes cylinder body, and at least one set of cylinder cap, piston body and Inflow pipeline, oil returning tube and at least one piston groove are provided with piston rod, the cylinder body, described piston groove one end is closed, The other end is set in opening, and all cylinder caps, which are separately positioned on the openend of corresponding piston groove, cylinder cap, is provided with slide opening, cylinder cap Seal and set between piston groove, all piston bodies are slidably installed in correspondence piston groove respectively, are sealed between piston body and piston groove Set, one end of all piston rods is respectively fixedly connected with each piston body, and the other end is respectively sleeved in the slide opening of correspondence piston groove, And the slide opening of extended correspondence piston groove, seal and set between piston rod and the slide opening of piston groove, the outer end of the inflow pipeline (oiler) is communicated to the corresponding flowline of distributor by hydraulic tube, and the inner of inflow pipeline is located at the correspondence of piston groove without bar The position of chamber, the inner of the oil returning tube is located at the position of the corresponding rod chamber of piston groove, and the outer end of oil returning tube passes through liquid Pressure pipe is communicated to relief valve.

In order to further realize the utility model, the quantity of the piston groove is multiple, and all piston grooves are in from top to bottom It is spacedly distributed.

In order to further realize the utility model, the check valve include the first valve body, the first spring base, the first spring and First plugging steel ball, the centre of first valve body is formed with the first cavity volume, and the top of the first valve body is provided with and the first cavity volume The first entrance being connected, the first entrance is communicated to hydraulic station, first entrance and the connection of the first cavity volume by hydraulic tube Position is provided with the first closure part, and the bottom of the first valve body is provided with least one being connected respectively with the first cavity volume and first gone out Mouthful, all first outlets are communicated to distributor by hydraulic tube, and first spring base, which is arranged in the first cavity volume, corresponds to the The position of one entrance, first spring is arranged on the first spring base, and first plugging steel ball is arranged on first entrance Between the first spring, to cause the first plugging steel ball tight against firmly the first closure part, the first plugging steel ball and the first closure part it Between for sealing coordinate.

In order to further realize the utility model, first plugging steel ball is spheroid, and first closure part is spheroid A part.

The beneficial effects of the utility model：

1st, the stone machine of the present utility model that splits is the new construction equipment that rock splits off from big ground, utilizes hydraulic cylinder Principle opened object top is divided, simple to operate, easy construction, and being held completely by hydraulic pressure without any vibrations and noise during construction Rock capping will slowly be belonged to environment fanout free region, the non-disposable excavation construction kind equipment of explosion by row mechanism.

2nd, the fluid that the utility model is exported by another branch road between relief valve and hydraulic station realizes relief valve Opening and closing, the control of relief valve is more convenient, it is possible to achieve Automatic Control (control panel), without manual Operation.

3rd, check valve of the present utility model uses plug-in type hydraulic pressure super-pressure check valve, can solve within 200MPa pressure Hydraulic oil one-way flow demand, its metered flow can reach 30 liters/min, and now droop loss is no more than 2MPa, that is to say, that Its pressure drop is no more than the 1% of rated operating pressure, solves the problems, such as many hydraulic pressure ultra-high pressure high flow one-way flows；In addition, I The hard sealing means of super-pressure that use, allow the structure of valve and sealing to become more simple and reliable.

4th, relief valve of the present utility model uses buffering hydraulic super-pressure hydraulic control check valve, opens and closes buffering hydraulic superelevation hydraulic fluid The reverse open function of check valve is controlled, can greatly mitigate super-pressure fluid to the erosion phenomenon of valve and gasification phenomenon；In addition, opening The reverse open function of buffering hydraulic super-pressure hydraulic control check valve, control chamber are closed it is desirable that low pressure, and under lower pressure, I Be entirely capable of using ripe automated control technology so that by current most 70~200MPa hydraulic pressure super-pressure application fields Functional promotion and control are perfect；Further, used keying buffering hydraulic super-pressure hydraulic control check valve, allow when splitting stone machine and splitting stone and retract Direct pressure release, is not only greatly improved efficiency (being reduced to 90 seconds by original 10 minutes), also solves troubling erosion With gasification phenomenon, more importantly, allowing fever phenomenon caused by original pipeline damping to be solved, (changing machine needs 20 meters Long flexible pipe, and the flexible pipe of so high pressure only has external import, and do not have a big orifice sebific duct, latus rectum only has 4.7 millimeters, but Flexible pipe needs frequently to move, and quantity can not be too much)

Brief description of the drawings

Fig. 1 is the full-automatic structural representation for splitting stone machine of the present utility model based on buffering hydraulic super-pressure hydraulic control check valve Figure；

Fig. 2 is the structural representation of the present utility model for splitting stone rod；

Fig. 3 is the structural representation of distributor of the present utility model；

Fig. 4 is the structural representation of check valve of the present utility model；

Fig. 5 is the structural representation of relief valve of the present utility model.

Embodiment

The utility model is further elaborated below in conjunction with the accompanying drawings, wherein, direction of the present utility model is using Fig. 1 as mark It is accurate.

As illustrated in fig. 1 and 2, it is of the present utility model that stone machine bag is automatically split based on buffering hydraulic super-pressure hydraulic control check valve Include hydraulic station 1, distributor 2, four split stone rod 3, hydraulic tube 4, check valve 5 and relief valve 6, the one of branch road of hydraulic station 1 is defeated Go out high-voltage oil liquid, high-voltage oil liquid is flowed into distributor 2 through check valve 5 is unidirectional, distributor 2 is again by fluid equipressure injection four Split in stone rod 3 (rodless cavity), so that four ejection for splitting stone rod 3 actions are realized, to reach the purpose for splitting stone；Hydraulic station 1 it is another One output branch road high-voltage oil liquid, high-voltage oil liquid injection relief valve 6, so as to realize the unlatching of relief valve 6, four split in stone rod 3 High-voltage oil liquid is back to hydraulic station 1 (fuel tank), such perseveration via relief valve 6 again, you can quick to realize the purpose for splitting stone. The quantity that the utility model splits stone rod 3 can be multiple, can be determined according to the area and hardness of realistic objective object, this practicality It is new only to be explained exemplified by four.

Hydraulic station 1 is hydraulic power source, and typically using powerful hydraulic hand-pump or automatic liquid press pump, the utility model is preferential Consider to use automatic liquid press pump.Two branch roads of hydraulic station 1 point realize the High voltage output of fluid, and one of branch road is used as power Source, another branch road as relief valve 6 controlling switch.

Check valve 5 is arranged between hydraulic station 1 and distributor 2, and the two ends of check valve 5 are communicated to by hydraulic tube 4 respectively Hydraulic station 1 and distributor 2, realize that fluid, respectively to four one-way flows for splitting stone rod 3, is such as schemed from hydraulic station 1 by check valve 5 Shown in 4, check valve 5 includes the first valve body 51, the first spring base 52, the first spring 53 and the first plugging steel ball 54, wherein：

The centre of first valve body 51 is formed with the first cavity volume 511, and the top of the first valve body 51 is provided with and the first cavity volume 511 The first entrance 512 being connected, first entrance 512 is communicated to hydraulic station 1 by hydraulic tube 4, and the bottom of the first valve body 51 is set There are six first outlets 513 being connected respectively with the first cavity volume 511, all first outlets 513 are communicated to point by hydraulic tube 4 Orchestration 2, six first outlets 513 are spacedly distributed in annular shape, and first entrance 512 and the connection position of the first cavity volume 511 are installed The first closure part 514 is equipped with, the first closure part 514 is a part for spheroid；First spring base 52 is arranged in the first cavity volume 511 Corresponding to the position of first entrance 512；First spring 53 is arranged on the first spring base 52；First plugging steel ball 54 is arranged on Between the spring 53 of first entrance 512 and first, the first plugging steel ball 54 is spheroid, and the diameter of the first plugging steel ball 54 is slightly less than the The diameter of the place spheroid of one closure part 514, is oppressed using the elasticity of the first spring 53, to cause the first plugging steel ball 54 tight against firmly First closure part 514, is tight fit between the first plugging steel ball 54 and the first closure part 514.

(the hydraulic station when pressure of the fluid in first entrance 512 is more than the pressure of the fluid in the first cavity volume 511 1 oiling input power), fluid acts on the first plugging steel ball 54 upwards, between the first plugging steel ball 54 and the first closure part 514 Formed it is certain enter oil-gap, fluid is slowly injected into the first cavity volume 511, and is smoothly entered in distributor 2；Work as first entrance When the pressure of fluid in 512 is less than the pressure of the fluid in the first cavity volume 511, the first spring 53 forces the first closure steel Ball 54 forms sealing surface, so as to realize fluid tight against firmly the first closure part 514 between first spring 53 and the first closure part 514 Can only one way flow.

First valve body 51, the first spring base 52, the first spring 53 and the first plugging steel ball 54 are all hydraulic pressure super-pressure elements, It is most basic requirement that pressure, which can be born, thus has selected 42CrNiMoA materials, using forging and stamping handling return, before finishing Modifier treatment is carried out, δ b are not less than 980MPa, and δ s are not less than 835MPa, most important of which is that the hardness of steel ball and valve seat is taken Match somebody with somebody, valve body hardness is controlled between HRC27~30, and steel ball surface hardness is finally scheduled between HRC53~58, what is be connected with fuel feed hole is super High pressure connection hardness is between HRC23~25.

Distributor 2 is connected to check valve 5 and respectively split between stone rod 3, and to realize output that fluid is one-to-many, distributor 2 is adopted Be made of the metal material compared with hard, as shown in figure 3, distributor 2 include body 21, it is oil inlet pipe 22, level Four dashpot 23, several Cushion hole 24 and four flowlines 25, body 21 is in longitudinally disposed discoid；Oil inlet pipe 22 is arranged on the upper surface of body 21 Middle position, and connected between check valve 5 by hydraulic tube 4；Level Four dashpot 23 is at different levels in being cascaded from top to bottom Connected respectively by cushion hole 24 between dashpot 23；Four flowlines 25 are separately positioned on the lower surface of body 21, and respectively It is connected with the dashpot 23 of the fourth stage；Cushion hole 24 between any two dashpot 23 be spacedly distributed in several ring-types or Person is spacedly distributed in matrix form, and four flowlines 25 are annularly spacedly distributed or are spacedly distributed in matrix form.Pass through The design in multi-buffer pond, using the cushioning effect of buffer pool, can cause the pressure basic one of the fluid of four flowlines 25 Cause, so as to ensure that each splits the fluid input pressure of stone rod 3 identically or comparably, so as to realize that hydraulic station 1 splits stone rod 3 to each The accurate control of equipressure, the series of dashpot 23 is more, and splitting the input pressure of stone rod 3 more tends to be identical.

Four split and are connected respectively by hydraulic tube 4 between stone rod 3 and four flowlines 25 of distributor 2, the utility model Split stone rod 3 and can realize that multiple spot is acted on, i.e., it includes multiple application points for making stretching motion, four split stone rod 3 structure Equally, as shown in Figure 2 (only being shown in figure with two application points), splitting stone rod 3 includes cylinder body 31, six cylinder caps 32, six pistons Body 33, six piston rods 34 and connecting bracket 35, wherein：

The exterior contour of cylinder body 31 is to be provided with inflow pipeline 311, oil returning tube on longitudinally disposed cylinder, cylinder body 31 312 and six piston grooves 313, the correspondence that the outer end (oiler) of inflow pipeline 311 is communicated to distributor 2 by hydraulic tube 4 goes out Oil pipe 25, the inner (oil-out) of inflow pipeline 311 be located at the corresponding rodless cavity of piston groove 313 position (left end end or Side wall keeps left)；The inner (oiler) of oil returning tube 312 is located at the position of the corresponding rod chamber of piston groove 313, and (side wall is kept right position Put), the outer end (oil-out) of oil returning tube 312 is communicated to relief valve 6 by hydraulic tube 4；The exterior contour of piston groove 313 is horizontal stroke To the cylinder of setting, six piston grooves 311 in being spacedly distributed from top to bottom, and the right-hand member of all piston grooves 311 connects with extraneous Logical, the left end of all piston grooves 311 is in closed state, certainly, the piston groove can also be spacedly distributed in annular shape or It is spacedly distributed in multiple annular shapes, depending on the object specifically divided.

Six cylinder caps 32 are separately positioned on the right-hand member of six corresponding piston grooves 313, cylinder cap 32 and are provided with horizontal setting Slide opening, between cylinder cap 32 and piston groove 313 seal set.

Six piston bodies 33 are slidably installed in each piston groove 313 respectively, and can be horizontally slipped along piston groove 313, piston body Seal and set between 33 and piston groove 313.

The left end of six piston rods 34 is respectively fixedly connected with each piston body 33, and the right-hand member of piston rod 34 is respectively sleeved at correspondence In the slide opening of piston groove 313, and the slide opening of extended correspondence piston groove 313, it is close between piston rod 34 and the slide opening of piston groove 313 Envelope is set.

Connecting bracket 35 is arranged on the top of cylinder body 31, with realize cylinder body 31 it is firm be positioned at stone 8 (destination object) Positioning hole 81 in, while facilitating guiding and supporting for connecting bracket 35.

Hydraulic tube 4 realizes that it plays sealing and hardness is required to bear the impact of high pressure using high voltage bearing tubing.

Relief valve 6, which is arranged on, respectively to be split between stone rod 3 and hydraulic station 1, to realize piston rod 34 during stretching, oil return The oil outlet end closing of pipeline 312, piston rod 34 is during contraction, and the oil outlet end of oil returning tube 312 is opened, as shown in figure 5, Relief valve 6 of the present utility model uses buffering hydraulic super-pressure hydraulic control check valve, and it includes the second valve body 61, the second check valve 62nd, pressure release piston body 63 and pressure release push rod 64, wherein：

The centre of second valve body 61 is formed with interconnected the second cavity volume 611 and the 3rd cavity volume 612, the second cavity volume 611 Positioned at the underface of the 3rd cavity volume 612, the bottom of the second valve body 61 is provided with the second entrance being connected with the second cavity volume 611 613, second entrance 613 is communicated to oil returning tube 312 by hydraulic tube 4 respectively, and the top of the second valve body 61 is provided with and the 3rd The pressure relief opening 614 that cavity volume 612 is connected, pressure relief opening 614 is communicated to hydraulic station 1 by hydraulic tube 4；The side wall of second valve body 61 is set The second outlet 615 being connected with the 3rd cavity volume 612 is equipped with, second outlet 615 is communicated to hydraulic station 1 by hydraulic tube 4.

The structure of second check valve 62 is consistent with check valve 5, and the second check valve 62 is fixedly mounted in the second cavity volume 611, Second check valve 62 includes the 3rd valve body 621, second spring seat 622, the plugging steel ball 624 of second spring 623 and second, wherein： 3rd valve body 621 is fixedly mounted in the second cavity volume 611, is set between the 3rd valve body 621 and the second valve body 61 for sealing, the 3rd The centre of valve body 621 is formed with the 4th cavity volume 6211, and the top of the 3rd valve body 621 is provided with what is be connected with the 4th cavity volume 6211 3rd outlet 6212, the bottom of the 3rd valve body 621 is provided with six the 3rd entrances being connected respectively with the 4th cavity volume 6211 6213, six the 3rd entrances 6213 are spacedly distributed in annular shape, the link position of the 3rd outlet 6212 and the 4th cavity volume 6211 The second closure part 6214 is provided with, the second closure part 6214 is a part for spheroid；Second spring seat 622 is arranged on the 4th cavity volume Correspond to the position of the 3rd outlet 6212 in 6211；Second spring 623 is arranged on second spring seat 622；Second closure steel Ball 624 is arranged between the 3rd outlet 6212 and second spring 623, is oppressed using the elasticity of second spring 623, to cause second Plugging steel ball 624, tight against firmly the second closure part 6214, is closely to match somebody with somebody between the second closure part 6214 and the second plugging steel ball 624 Close.3rd outlet 6212 of the second check valve 62 is connected with the 3rd cavity volume 612, six the 3rd entrances 6213 of the second check valve 62 It is connected respectively with second entrance 613.

Pressure release piston body 63 is slidably installed in the 3rd cavity volume 612, and can be slided up and down along the 3rd cavity volume 612, pressure release piston Set between the valve body 61 of body 63 and second for sealing, the extreme position of pressure release piston body 63 is no more than second outlet 615, i.e., the Two outlets 615 are always positioned between the check valve 62 of pressure release piston body 63 and second (second outlet 615 is in naked state all the time).

Pressure release push rod 64 is in longitudinally disposed, and the top of pressure release push rod 64 is fixedly connected with pressure release piston body 63, pressure release push rod 64 Bottom be provided with supporting part with the shape adaptation of the second plugging steel ball 624, the bottom of pressure release push rod 64 can extend into the 3rd valve In 3rd outlet 6212 of body 621, the supporting part of pressure release push rod 64 can slowly the second plugging steel ball of jack-up 624 upwards.

The operation principle of relief valve 6 is as follows：

(1) relief valve 6 is opened and closed to close：

When the no pressure of pressure relief opening 614 is oily, pressure release push rod 64 (is more than 0.5MPa under the back pressure effect of second outlet 615 Can, this is the experience accumulation in our hydraulic pressure extra high voltage system pressure release loop design and use, is answered so we eliminate push rod Position spring) Fig. 5 positions are in, 200MPa hydraulic pressure, the second plugging steel ball can be now applied with second entrance 613 624 in the presence of second spring 623, towards the movement of the direction of pressure release push rod 64, then close to the second closure part 6214, and not Under hydraulic pressure hyperpressure effect more than 200MPa, the second plugging steel ball 624 is brought into close contact with the surface of the second closure part 6214, from And sealing effectiveness is played, by the barrier of super-pressure fluid in second entrance 613, now, relief valve 6 is in super-pressure " closing " shape State.

(2) the positive unlatching of relief valve 6 is opened and closed：

When the no pressure of pressure relief opening 614 is oily, second outlet 615 can connect 35MPa pressure oil, pressure release push rod 64 no matter In any position, it can all move back to pressure relief opening 614, the pressure oil of such second outlet 615 can overcome the resistance of second spring 623 Power, flows to second entrance 613, due to being that band opens and closes pooling feature, is mainly used in hydraulic pressure super-pressure pressure release, positive passage flow duct area Small, this valve is not suitable for positive unlatching, but is replaced with after non-buffered push rod, and positive flow area is back to normal, can use This function.

(3) relief valve 6 is opened and closed reversely to open

It is in second entrance 613 under superelevation pressure condition, second outlet 615 is in low-pressure state, when pressure relief opening 614 is connected When control pressure is oily, pressure release push rod 64 by force opens the second plugging steel ball 624 top, the moment opened on top, ultrahigh-pressure hydraulic oil meeting Great impact phenomenon is produced, very big throttle effect can be produced by now buffering the annular gap of 0.2 millimeter of the valve element conical surface, so that The hydraulic shock intensity of moment is opened in limitation, as pressure release push rod 64 is moved in the presence of control oil towards the end of second entrance 613 Dynamic, valve element flow area is gradually increased, and throttle effect gradually weakens until reaching the flow area of six latus rectums.Reverse opening structure In design, a diameter of 40 millimeters of pressure release piston body 63, the sealed covering diameter of the second plugging steel ball 624 is 8 millimeters, area ratio For 25：1, that is to say, that under 200MPa pressure, under the minimum Opening pressure of pressure relief opening 614 is 8MPa, 150MPa pressure, pressure release It is 6MPa that the minimum pressure of mouth 614, which is opened, by that analogy.

Better embodiment of the present utility model is the foregoing is only, the utility model is not limited to above-mentioned embodiment party Formula, there may be local small structural modification in implementation process, if to various changes or modification of the present utility model not Depart from spirit and scope of the present utility model, and belong within the scope of claim of the present utility model and equivalent technologies, then originally Utility model is also intended to comprising these changes and modification.

Claims (10)

1. a kind of full-automatic based on buffering hydraulic super-pressure hydraulic control check valve splits stone machine, it is characterised in that it include hydraulic station, At least one splits stone rod, hydraulic tube, check valve and relief valve, is connected between the hydraulic station and check valve by hydraulic tube, single Connected to valve with each described split by hydraulic tube between stone rod, to realize that the fluid in hydraulic station is defeated to stone rod one direction is respectively split Go out, respectively split and connected between stone rod and relief valve by hydraulic tube, connected between relief valve and hydraulic station by two hydraulic tubes, often One splits stone rod during ejection, and the relief valve is in closed mode, and each stone rod that splits is during contraction, wherein one Hydraulic tube realizes the unlatching of the fluid control relief valve in hydraulic station, and a hydraulic tube realizes that the fluid respectively split in stone rod is returned in addition It flow to hydraulic station.

2. according to claim 1 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In the relief valve includes the second valve body, the second check valve, pressure release piston body and pressure release push rod, the centre of second valve body Interconnected the second cavity volume and the 3rd cavity volume is formed with, second cavity volume is located at the underface of the 3rd cavity volume, the second valve body Bottom be provided with the second entrance being connected with the second cavity volume, the second entrance is communicated to by hydraulic tube splits stone rod, The top of two valve bodies is provided with the pressure relief opening being connected with the 3rd cavity volume, and pressure relief opening is communicated to hydraulic station by hydraulic tube；Second The side wall of valve body is provided with the second outlet being connected with the 3rd cavity volume, and second outlet is communicated to hydraulic station by hydraulic tube；Institute State the second check valve to be fixedly mounted in the second cavity volume, seal and coordinate between the second check valve and the second cavity volume, the second check valve Input be connected with second entrance, the output end of the second check valve is connected with the 3rd cavity volume；The pressure release piston body is slided It is located in the 3rd cavity volume, and can be slided up and down along the 3rd cavity volume, is set between pressure release piston body and the second valve body for sealing；Institute It is in longitudinally disposed to state pressure release push rod, and the top of pressure release push rod is fixedly connected with pressure release piston body, and the bottom of pressure release push rod can be extend into In second check valve, pressure release push rod can the slowly occluding body of the check valve of jack-up second upwards.

3. according to claim 2 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In the bottom of the pressure release push rod is provided with the supporting part with the occluding body shape adaptation of the second check valve.

4. according to claim 2 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In second check valve includes the 3rd valve body, second spring seat, second spring and the second plugging steel ball, the 3rd valve body It is fixedly mounted in the second cavity volume, is set between the 3rd valve body and the second valve body for sealing, the centre of the 3rd valve body is formed with the Four cavity volumes, the top of the 3rd valve body is provided with the 3rd outlet being connected with the 4th cavity volume, and the 3rd outlet is connected with the 3rd cavity volume, 3rd outlet and the link position of the 4th cavity volume are provided with the second closure part, and the bottom of the 3rd valve body is provided with respectively with the At least one the 3rd entrance that four cavity volumes are connected, all 3rd entrances are connected with second entrance respectively, the second spring Seat is arranged on the position for corresponding to the 3rd outlet in the 4th cavity volume, and the second spring is arranged on second spring seat, described Second plugging steel ball is arranged between the 3rd outlet and second spring as occluding body, to cause the second plugging steel ball tight against firmly the Two closure parts, coordinate between the second plugging steel ball and the second closure part for sealing.

5. according to claim 4 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In second plugging steel ball is spheroid, and second closure part is a part for spheroid.

6. according to claim 4 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In the quantity of the 3rd entrance is multiple, and all 3rd entrances are spacedly distributed in annular shape.

7. according to claim 1 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In the stone rod that splits includes being provided with oil inlet pipe on cylinder body, and at least one set of cylinder cap, piston body and piston rod, the cylinder body Road, oil returning tube and at least one piston groove, piston groove one end closing, the other end are set in opening, all cylinder cap difference It is arranged on the openend of corresponding piston groove, cylinder cap and is provided with slide opening, seals and set between cylinder cap and piston groove, all pistons Body is slidably installed in correspondence piston groove respectively, is sealed and is set between piston body and piston groove, one end of all piston rods is fixed respectively Each piston body is connected, the other end is respectively sleeved in the slide opening of correspondence piston groove, and the slide opening of extended correspondence piston groove, piston Seal and set between bar and the slide opening of piston groove, the correspondence that the outer end of the inflow pipeline is communicated to distributor by hydraulic tube goes out Oil pipe, the inner of inflow pipeline is located at the position of the corresponding rodless cavity of piston groove, and the inner of the oil returning tube is located at piston groove Corresponding rod chamber position, the outer end of oil returning tube is communicated to relief valve by hydraulic tube.

8. according to claim 7 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In the quantity of the piston groove is multiple, and all piston grooves are in be spacedly distributed from top to bottom.

9. according to claim 1 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In the check valve is included in the first valve body, the first spring base, the first spring and the first plugging steel ball, first valve body Between be formed with the first cavity volume, the top of the first valve body is provided with the first entrance being connected with the first cavity volume, the first entrance Hydraulic station is communicated to by hydraulic tube, first entrance and the link position of the first cavity volume are provided with the first closure part, the first valve body Bottom be provided with least one first outlet being connected respectively with the first cavity volume, all first outlets are connected by hydraulic tube To distributor, first spring base is arranged on the position for corresponding to first entrance in the first cavity volume, and first spring is installed On the first spring base, first plugging steel ball is arranged between first entrance and the first spring, to cause the first closure Steel ball coordinates tight against firmly the first closure part between the first plugging steel ball and the first closure part for sealing.

10. according to claim 9 automatically split stone machine based on buffering hydraulic super-pressure hydraulic control check valve, its feature exists In first plugging steel ball is spheroid, and first closure part is a part for spheroid.