CN1514139A - Hydraulic system integrated with hydranlic blocks - Google Patents

Hydraulic system integrated with hydranlic blocks Download PDF

Info

Publication number
CN1514139A
CN1514139A CNA031323103A CN03132310A CN1514139A CN 1514139 A CN1514139 A CN 1514139A CN A031323103 A CNA031323103 A CN A031323103A CN 03132310 A CN03132310 A CN 03132310A CN 1514139 A CN1514139 A CN 1514139A
Authority
CN
China
Prior art keywords
passage
valve
oil inlet
matrix
sole piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA031323103A
Other languages
Chinese (zh)
Other versions
CN1299013C (en
Inventor
龚步才
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CNB031323103A priority Critical patent/CN1299013C/en
Publication of CN1514139A publication Critical patent/CN1514139A/en
Application granted granted Critical
Publication of CN1299013C publication Critical patent/CN1299013C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

A hydraulic system integrated by hydraulic bolcks of top block, bottom block and base block consists of base block which has channel connecting oil inlet channel, oil returning channel, A, B, P, T or Ta opening of superposition or change valve to oil opening of executive element, another oil opening, oil inlet channel and returning oil channel of executive element separately in each of it as well as bottom block which is connected with at least one control valve on it and has oil inlet channel and oil returning channel Each base block having been superposed in sequence is connected to the bottom block as oil inlet channel and oil returning channel in the bottom block and the base block are connected to each other. The hydraulic blocks provided in the present invention for top, base, connection and bottom are interchangeable ones.

Description

A kind of by the integrated hydraulic system of hydraulic module
Technical field
The present invention relates to a kind of hydraulic system, especially a kind of hydraulic system of utilizing hydraulic module to be formed by stacking.
Background technique
For many years, the component of forming hydraulic system are non-tender, interchangeability is very poor, even two hydraulic systems have slight difference on schematic diagram, all might cause the layout design of two systems and produce far from each other, and design, manufacture cycle are long, management trouble, the Installation and Debugging difficulty is upgraded and is retrofited the hydraulic system of existing equipment, difficulty is bigger, and is high even success also can be costed.Pipeline, the joint of common hydraulic system are many, if deal with improperly can cause just that pipe arrangement is in disorder, joint leaks, loosely organized, volume super large.In addition, no matter the valve piece of tradition Sandwich plate valve hydraulic system is integrated type or split type, all can not be in same system the Sandwich plate valve and the selector valve of compatible different size, for example, if this valve piece DN10 Sandwich plate valve and selector valve design, just DN6 Sandwich plate valve and selector valve can not be installed.Above-described common hydraulic system and traditional Sandwich plate valve hydraulic system filter device therefor are plain filter, and all handy pipeline connects.
Summary of the invention
First technical problem that the present invention will solve is the very poor problem of component interchangeability of common hydraulic system, and it provides a kind of hydraulic module that General Construction is used interchangeably that has.
Second technical problem that the present invention will solve is that common Design of Hydraulic System, manufacture cycle are long, the management trouble, the problem of Installation and Debugging difficulty, it provides a kind of standardization hydraulic module, design, production, debugging cycle are shortened, and the manufacturer can utilize the quick completed knocked down products delivery of stock.
The 3rd technical problem that the present invention will solve is that common hydraulic system pipe arrangement is in disorder, joint is many, easy problem of leaking, it provides a kind of basically with there not being the hydraulic system that the pipe mounting type is set up, and this hydraulic system only has user required each terminal input, output and control joint for user's domination.
The 4th technical problem that the present invention will solve is common hydraulic system upgrading and the big problem of remodeling difficulty, and it is as long as long bolt, sealing or open certain (a bit) interface are installed in certain (a bit) matrix place valve layer of additions and deletions and corresponding replacing, certain (a bit) valve of additions and deletions is just scalable or be modified as another hydraulic system.
The 5th technical problem that the present invention will the solve problem that to be common hydraulic system must be connected with pipeline with traditional Sandwich plate valve hydraulic system filter device therefor, it also makes module with the filter part, directly be superimposed upon in the system, the user need not go in the face of the annoying problems such as layout, pipe arrangement and opened filter mounting hole of plain filter again.
Of the present inventionly a kind ofly comprise power source, hydraulic module, executive component, control valve etc. by the integrated hydraulic system of hydraulic module, hydraulic module comprises a jacking block, sole piece, a n matrix, and n is natural number and n 〉=2; Have in each matrix: the P mouth the other end of passage, a termination Sandwich plate valve or the selector valve of another another hydraulic fluid port of termination executive component of B mouth of passage, a termination Sandwich plate valve or the selector valve of another termination executive component one hydraulic fluid port of A mouth of oil inlet passage p, drainback passage t, a termination Sandwich plate valve or selector valve taps into the T mouth or the T of passage, a termination Sandwich plate valve or the selector valve of oily passage p AThe mouth the other end takes back the passage of oily passage t; In sole piece, have: oil inlet passage p, drainback passage t; Also be connected with a control valve on sole piece at least, described control valve can be connected among the oil inlet passage p of sole piece, among the drainback passage t or between oil inlet passage p and the drainback passage t; First matrix, second matrix ... the n matrix superposes successively and becomes to removably connect, first matrix becomes to removably connect with sole piece again, and the oil inlet passage p on the n matrix, the port of drainback passage t quilt seal with the jacking block that the n matrix becomes to removably connect; Oil inlet passage p, drainback passage t in each matrix, the sole piece is communicated with.As to a kind of remodeling of the present invention with strengthen, in each matrix of the 1st to m of stack, two passages i.e. second oil inlet passage p ' and a termination another termination Sandwich plate valve of the second oil inlet passage p ' or selector valve T have been increased BThe passage of mouth, m is natural number and n 〉=m 〉=1; The also corresponding second oil inlet passage p ' that is communicated with the second oil inlet passage p ' in the matrix that increased in sole piece; This moment Sandwich plate valve or selector valve T AMouth communicates with drainback passage t.As another kind of the present invention being retrofited and strengthening, increased with lower channel in each matrix of the 1st to m of stack: another termination of L mouth that another termination of Y mouth that another termination of X mouth of controlling oily oil supply gallery a, the oily oil drain passage b of control, control oily draining passage c, a termination Sandwich plate valve or selector valve is controlled passage, a termination Sandwich plate valve or the selector valve of oily oil supply gallery a is controlled passage, a termination Sandwich plate valve or the selector valve of oily oil drain passage b is controlled the passage of oily draining passage c, and m is natural number and n 〉=m 〉=1; Also correspondingly in sole piece increased following structure: control oily oil supply gallery a, the oily oil drain passage b of control, the oily draining passage c of control; Each matrix of the 1st to m, sole piece internal channel a, b, c are communicated with.
The above is by in the integrated hydraulic system of hydraulic module, hydraulic module can also comprise a contiguous block that is connected between matrix and sole piece, corresponding oil inlet passage, drainback passage are arranged in contiguous block, according to the needs of hydraulic system, second oil inlet passage also can be arranged in the contiguous block or control oily oil supply gallery, control oil oil drain passage, the oily draining passage of control; The filter that has one-tenth with it to removably connect on contiguous block, described filter can be second filter-press that is connected in contiguous block second oil inlet passage, and/or is connected to the filter-press in the oil inlet passage, and/or is connected to the return filter in the drainback passage.
Selector valve, Sandwich plate valve, matrix are each other and removably connect among the present invention; Jacking block, matrix, contiguous block, sole piece are each other and removably connect.
Beneficial effect of the present invention: 1, it provides a kind of hydraulic module that General Construction is used interchangeably that has, and comprises jacking block, matrix, contiguous block, sole piece, makes the component of this hydraulic system that good interchangeability be arranged.2, design, production, debugging cycle are shortened, the manufacturer can utilize the quick completed knocked down products delivery of stock.3, the present invention is a kind of hydraulic system that the pipe mounting type is set up of not having basically, compact structure, and volume is little, is difficult for leaking.4, upgrading of this hydraulic system and remodeling easily, it as long as certain (a bit) matrix of additions and deletions, certain (a bit) valve and corresponding replacing installation with stay bolt, sealing or to open certain (a bit) interface just scalable or be modified as another hydraulic system.
Description of drawings
Fig. 1 is the structural representation of " special double pump system ".
Fig. 2 is the hydraulic schematic diagram of Fig. 1 " special double pump system ".
Fig. 3 is the hydraulic schematic diagram of " related, electric liquid/hydraulicchange-over valve L mouth and oil return inlet T with the remote control mouth x of relief valve of the X mouth of single-pump system and electric liquid/hydraulicchange-over valve is related ".
Fig. 4 is the hydraulic schematic diagram of " related, electric liquid/hydraulicchange-over valve L mouth and oil return inlet T with the remote control mouth x of relief valve of the X mouth of common double pumping system and electric liquid/hydraulicchange-over valve is related ".
Fig. 5 is the sole piece hydraulic schematic diagram of " related, electric liquid/hydraulicchange-over valve L mouth and oil return inlet T with the remote control mouth x of relief valve of the X mouth of atypical double pump system and electric liquid/hydraulicchange-over valve is related ".
Fig. 6 is the sole piece hydraulic schematic diagram of " the X mouth of single-pump system and electric liquid/hydraulicchange-over valve is not related with the remote control mouth x of relief valve, the L mouth and the oil return inlet T of electric liquid/hydraulicchange-over valve not related ".
Fig. 7 is the sole piece hydraulic schematic diagram of " the X mouth of common double pumping system and electric liquid/hydraulicchange-over valve is not related with the remote control mouth x of relief valve, the L mouth and the oil return inlet T of electric liquid/hydraulicchange-over valve not related ".
Fig. 8 is the sole piece hydraulic schematic diagram of " the X mouth of atypical double pump system and electric liquid/hydraulicchange-over valve is not related with the remote control mouth x of relief valve, the L mouth and the oil return inlet T of electric liquid/hydraulicchange-over valve not related ".
Fig. 9-1 is the plan view of sole piece among Fig. 4, Fig. 9-2, Fig. 9-3, Fig. 9-4, Fig. 9-5 are respectively C-C, D-D, E-E, the F-F sectional view among Fig. 9-1, Fig. 9-6, Fig. 9-7 is respectively worm's eye view, the plan view of Fig. 9-1, Fig. 9-8, Fig. 9-9 is respectively A-A, the B-B sectional view of Fig. 9-7, Fig. 9-10 is the left view of Fig. 9-1, Fig. 9-11 is the G-G sectional view among Fig. 9-10, and Fig. 9-12 is the right elevation of Fig. 9-1.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Among Fig. 1,2, long bolt 8 passes in the tapped hole that is screwed into behind contiguous block 6, first matrix 1, second matrix 2, the 3rd matrix 3, the 4th matrix 4, the jacking block 5 on the sole piece 7 successively, and the upper end is with nut and bullet pad and tight.
In first matrix 1, second matrix 2, have: oil inlet passage p 2, drainback passage t, a termination DN10 Sandwich plate valve the passage 23, the P mouth the other end of a termination DN10 Sandwich plate valve of another hydraulic fluid port of another termination executive component of B mouth of passage 22, a termination DN10 Sandwich plate valve of a hydraulic fluid port of another termination executive component of A mouth tap into oily passage p 2Passage 21, the T of a termination DN10 Sandwich plate valve AThe mouth the other end takes back the passage 24 of oily passage t, the T of a termination DN10 Sandwich plate valve BThe passage 25 of another termination of mouth second oil inlet passage p '; In the 3rd matrix 3, the 4th matrix 4, have: oil inlet passage p 2, drainback passage t, a termination DN6 Sandwich plate valve the passage 23, the P mouth the other end of a termination DN6 Sandwich plate valve of another hydraulic fluid port of another termination executive component of B mouth of passage 22, a termination DN6 Sandwich plate valve of a hydraulic fluid port of another termination executive component of A mouth tap into oily passage p 2Passage 21, the T mouth the other end of a termination DN6 Sandwich plate valve take back the passage 24 of oily passage t; Filter-press 16, second filter-press 17, and contiguous block 6 between be releasable connection.Second filter-press 17 is connected among the second oil inlet passage p ' of contiguous block 6, and promptly the filler opening of second filter-press 17 connects second oil inlet passage 30, and oil outlet connects second oil inlet passage 31; Filter-press 16 is connected to the oil inlet passage p of contiguous block 6 2In, promptly the filler opening of filter-press 16 taps into oily passage 28, and oil outlet taps into oily passage 29.Also have drainback passage t in contiguous block 6, do not insert return filter among the drainback passage t this moment.
Be connected on the sole piece 7 is electromagnetic relief valve 18 ' and an one-way valve 19 of a band remote control mouth; One-way valve 19 is connected among the oil inlet passage p of sole piece, and p is divided into two-part with oil inlet passage: a part is the preceding oil inlet passage p of one-way valve 1, the oil inlet passage when promptly fluid is not also flowed through one-way valve, second portion are the oil inlet passage p behind the one-way valve 2, i.e. the fluid oil inlet passage behind the one-way valve of flowing through; Electromagnetic relief valve 18 ' is connected to drainback passage t and oil inlet passage p on the sole piece 7 1Between, i.e. the pressure port of electromagnetic relief valve 18 ' and oil inlet passage p 1Communicate, the flow-off of electromagnetic relief valve 18 ' communicates with drainback passage t.In sole piece, meet the remote-control channel Kx of electromagnetic relief valve 18 ' remote control mouth in addition, and the second oil inlet passage p '.Oil inlet passage p in each matrix, contiguous block 6, the sole piece 7 2, the second oil inlet passage p ' passes filter respectively and is communicated with.Drainback passage t directly is communicated with in each matrix, contiguous block 6, the sole piece 7.Remote-control channel Kx is inoperative when electromagnetic relief valve 18 ' internal control, connects the pressure port of remote-control relief valve 43 when electromagnetic relief valve 18 ' external control.Two hydraulic fluid ports of executive component connect 22,23 respectively.When system is single-pump system, oil inlet passage p in the sole piece 7 1Filler opening connect the oil outlet of pump, the second oil inlet passage p ' is inoperative, be that duct relevant with the second oil inlet passage p ' on each matrix, the sole piece need not process,, the filler opening of the second oil inlet passage p ' in the sole piece got final product well with plug screw (JB1001-77) is stifled if process.When system was double pump system, it was to utilize DN10 Sandwich plate valve T BMouth can transform P ' mouthful into, with oil inlet passage p 1The filler opening place connect the oil outlet of first pump (big pump), passage p ' in the sole piece but the user of filler opening place adjunction one one-way valve 20 receive the oil outlet of second pump (little pump) again, what formed this moment is two double pump systems that pump is not related.The overflow of first pump (big pump) realizes by electromagnetic relief valve 18 ', and the overflow of second pump (little pump) realizes by overlapping relief valve 13, and second pump (little pump) is only to first matrix 1 and the control valve that is attached thereto, executive component fuel feeding.On first matrix 1 with P, A, B, the T of DN10 Sandwich plate valve A, T BMouthful adaptive passage is respectively 21,22,23,24,25, but the fuel-displaced port of passage 21 stops by its special construction in the valve body of DN10 overlapping throttle valve 14, and promptly passage 21 does not work; On second matrix 2 with P, A, B, the T of DN10 Sandwich plate valve AMouthful adaptive passage is respectively 21,22,23,24, the second matrixs 2 and the control valve that is attached thereto, the executive component fuel feeding is supplied with by first pump (big pump), and this moment, passage 25 ports should be closed (as be pressed into steel ball block), and promptly passage 25 does not work; On the 3rd matrix 3, the 4th matrix 4, be respectively 21,22,23,24 with the adaptive passage of P, A, B, the T mouth of DN6 Sandwich plate valve.If want to make win pump (big pump), second pump (little pump) association; the Pc place will be connect pressure relay; signal with this pressure relay removes electrical control electromagnetic relief valve 18 '; make it get electric off-load; thereby save first pump (big pump) power consumption; also can be without electromagnetic relief valve 18 '; and with relief valve 18; shut down by Pc place pressure relay signalisation first pump (big pump) and save power consumption this moment, and the Electrical heads of selector valve also can provide electrical signal control electromagnetic relief valve 18 ' off-load or first pump (big pump) to shut down in addition.We call special double pump system to this system.
Among Fig. 3, electro-hydraulic reversing valve 36 is connected with second matrix 2 by Sandwich plate valve, and hydraulicchange-over valve 37 is connected with first matrix 1 by Sandwich plate valve.In first matrix 1, second matrix 2, have: oil inlet passage p 2, drainback passage t, the oily oil supply gallery a of control, the oily oil drain passage b of control, control oily draining passage c, a termination Sandwich plate valve the passage 23, the P mouth the other end of a termination Sandwich plate valve of another hydraulic fluid port of another termination executive component of B mouth of passage 22, a termination Sandwich plate valve of a hydraulic fluid port of another termination executive component of A mouth tap into oily passage p 2The T mouth the other end of passage 21, a termination Sandwich plate valve take back the passage 24 of oily passage t, a termination Sandwich plate valve X mouth the other end and connect the passage 40 of road a, the passage 41 that a termination Sandwich plate valve Y mouth the other end is connected road b, the L mouth the other end of a termination Sandwich plate valve and connect the passage 42 of road c.In the 3rd matrix 3, the 4th matrix 4, have: oil inlet passage p 2, drainback passage t, the oily oil supply gallery a of control, the oily oil drain passage b of control, control oily draining passage c, a termination DN6 or DN10 Sandwich plate valve the P mouth the other end of passage 23, a termination DN6 or DN10 Sandwich plate valve of another hydraulic fluid port of another termination executive component of B mouth of passage 22, a termination DN6 or DN10 Sandwich plate valve of a hydraulic fluid port of another termination executive component of A mouth tap into oily passage p 2The T or the T of passage 21, a termination DN6 or DN10 Sandwich plate valve AThe mouth the other end takes back the passage 24 of oily passage t.It is inoperative when a, b, c are by the diagram overlay order in the 3rd matrix 3, the 4th matrix 4 at this moment, when the 3rd matrix 3, the 4th matrix 4 and first matrix 1, second matrix, 2 upper-lower positions to timing, a, b, c play a kind of channeling in described the 3rd matrix 3, the 4th matrix 4.In sole piece 7, have: the oil inlet passage p before the one-way valve 1, the oil inlet passage p behind the one-way valve 2, the remote-control channel Kx of drainback passage t, the oily oil supply gallery a of control, the oily oil drain passage b of control, control oily draining passage c, electromagnetic relief valve 18 ', whether related plug screw Sx, the control oil drain tap L that determines electric liquid/hydraulicchange-over valve of the remote control mouth x of control oil oil-feed port X and relief valve that determines electric liquid/hydraulicchange-over valve 36/37 and relief valve whether related plug screw S1, the measuring pressure passage Cp of the interior oil pressure of survey oil inlet passage of flow-off T.
The described system of Fig. 3 supports four kinds of control oil of the oily oil-feed port X of the control of electric liquid/hydraulicchange-over valve 36/37, the oily oil drain out Y of control, the L shaped one-tenth of the oily drain tap of control to supply row's mode, but for sole piece simplified structure and minimizing input/output interface, the spy designs the X mouth of electric liquid/hydraulicchange-over valve and the remote control mouth x of electromagnetic relief valve 18 ' on same straight line, with the X/x mouth it is united two into one: (the sole piece concrete structure sees Fig. 9-1 for details to 12)
A. supply interior row in
Plug screw is made as interior confession with the X mouth in electricity liquid/hydraulicchange-over valve 36/37, and the Y mouth is made as interior row, and a, the b passage in matrix and the sole piece is all inoperative at this moment, and inner plug screw Sx is not essential, the remote control mouth that its X/x mouth is an electromagnetic relief valve 18 '.X/x mouth, Y mouth should be blocked up with plug screw (JB1001-77) during not remote control, the X/x mouth connects the pressure port of remote-control relief valve 43 during remote control, and the Y mouth blocks up with plug screw (JB1001-77), and wherein plug screw (JB1001-77) only has been an effect attractive in appearance at this moment.
B. supply in to efflux
Plug screw is made as interior confession with the X mouth in electricity liquid/hydraulicchange-over valve 36/37, and the Y mouth is made as and effluxes, and a passage in matrix and the sole piece is inoperative at this moment, the b passage works, inner plug screw Sx is not essential, and its Y mouth is taken over road oil sump tank, the remote control mouth that its X/x mouth is an electromagnetic relief valve 18 '.The X/x mouth should be blocked up with plug screw (JB1001-77) during not remote control, the X/x mouth connects the pressure port of remote-control relief valve 43 during remote control, and wherein plug screw (JB1001-77) only has been an effect attractive in appearance at this moment.
C. outer for effluxing
Plug screw is made as outer confession with the X mouth in electricity liquid/hydraulicchange-over valve 36/37, and the Y mouth is made as and effluxes.Sole piece is if be with inner plug screw Sx, and at this moment, the X/x mouth is the X mouth of electric liquid/hydraulicchange-over valve 36/37, and the remote control mouth of electromagnetic relief valve 18 ' can not remote control, and its Y mouth is taken over road oil sump tank; Sole piece is not if be with inner plug screw Sx, its X/x mouth both had been the remote control mouth x of electromagnetic relief valve 18 ', it is again the X mouth of electric liquid/hydraulicchange-over valve 36/37, be that both are shared, this moment, the X/x mouth connect tee union, and then other two ports are received the outer oil feed line of the X mouth of the pressure port of remote-control relief valve 43 and electric liquid/hydraulicchange-over valve 36/37 respectively, the Y mouth is taken over the road oil sump tank.Note, the minimum value of the be provided with working pressure of remote-control relief valve 43 should can promote the minimum working pressure power of main valve plug greater than electric liquid/hydraulicchange-over valve X mouth pressure oil, and the minimum working pressure power of promotion main valve plug is about about 0.4Mpa (each manufacturer is slightly different to this value regulation) generally.
D. outer for interior row
Plug screw is made as outer confession with the X mouth in electricity liquid/hydraulicchange-over valve 36/37, and the Y mouth is made as interior row.At this moment, the b passage is inoperative.Sole piece is if to be with inner plug screw Sx, X/x mouth be the X mouth of electric liquid/hydraulicchange-over valve 36/37, and the remote control mouth of electromagnetic relief valve 18 ' can not remote control, and the Y mouth blocks up with plug screw (JB1001-77); Sole piece is not if be with inner plug screw Sx, its X/x mouth both had been the remote control mouth x of electromagnetic relief valve 18 ', it is again the X mouth of electric liquid/hydraulicchange-over valve 36/37, be that both are shared, this moment, the X/x mouth connect tee union, and then other two ports are received the outer oil feed line of the X mouth of the pressure port of remote-control relief valve 43 and electric liquid/hydraulicchange-over valve 36/37 respectively, the Y mouth blocks up with plug screw (JB1001-77).Notice that the minimum value of the be provided with working pressure of remote-control relief valve 43 should can promote the minimum working pressure power of main valve plug greater than the X mouth pressure oil of electric liquid/hydraulicchange-over valve 36/37, the minimum working pressure power that promotes main valve plug is generally about about 0.4Mpa.
Controlling oily drain tap L only works in the electro-hydraulic reversing valve of hydraulic pressure centering or hydraulicchange-over valve:
When not having inner plug screw S1, the L mouth should block up with plug screw (JB1001-77), this moment, the L mouth communicated with the T mouth, and the electro-hydraulic reversing valve of hydraulic pressure centering or hydraulicchange-over valve control oil are let out in being, drainback passage should not have back pressure at this moment, T mouth adapter road oil sump tank; When inner plug screw S1 was arranged, this moment, the L mouth was obstructed with the T mouth, and hydraulic pressure centering electro-hydraulic reversing valve or hydraulicchange-over valve control are oily for leaking, and L mouth and T mouth should be distinguished and take over the road oil sump tank separately.
Among Fig. 4, the sole piece 7 that this double pump function is used is on the basis of sole piece in Fig. 3 the remote control mouth X of relief valve 18 and the outlet P2 of one-way valve 19 to be communicated, and forms the unloading valve loop of an equivalence, promptly increases a connection channel p 2The passage xp of/Cp and Kx, oil inlet passage p in sole piece again 2Go up and make a call to a passage p 3Receive the oil outlet of second pump (high-pressure service pump).During low pressure and mass flow, high and low press pump is fuel feeding simultaneously, unnecessary fluid is by relief valve 18 (being set to low pressure) overflow on the sole piece, during high-pressure low-flow, the pressure oil that second pump (high-pressure service pump) provides acts on the remote control mouth X of relief valve 18 on the sole piece, make its relief valve 18 off-loads, thereby force first pump (low pressure pump) off-load, this moment, unnecessary fluid was to come overflow by an overlapping relief valve 38 (being set to high pressure) of setting up, and we call common double pumping system (the sole piece concrete structure sees Fig. 9-1 for details to 12) to this system.
Return filter 15, filter-press 16, and contiguous block 6 between be releasable connection.Return filter 15 is connected among the drainback passage t of contiguous block 6, and promptly the filler opening of return filter 15 takes back oily passage 26, and oil outlet takes back oily passage 27; Filter-press 16 is connected to the oil inlet passage p of contiguous block 6 2In, promptly the filler opening of filter-press 16 taps into oily passage 28, and oil outlet taps into oily passage 29.In contiguous block 6, also have and each matrix, sole piece 7 corresponding control oil oil supply gallery a, the oily oil drain passage b of control, the oily draining passage c of control that are communicated with.
System's other parts beyond contiguous block, the sole piece are all identical with Fig. 3, but the Sandwich plate valve in the first matrix layer must contain relief valve 38.
Among Fig. 5, the sole piece 7 that this double pump function is used is that the remote control mouth X of electromagnetic relief valve 18 ' and the outlet P2 of one-way valve 19 do not drill through with sole piece 7 only differences that the common double pumping system uses, i.e. connecting passage p 2The passage xp of/Cp and Kx does not exist, formation be two double pump systems that pump is not related.The overflow of first pump (big pump) realizes by electromagnetic relief valve on the sole piece 18 '; the overflow of second pump (little pump) is to come overflow by setting up an overlapping relief valve 38 at the operating valve layer of used executive component; if want to make the pump (big pump) of winning; second pump (little pump) association; the Pc place will be connect pressure relay; signal with this pressure relay removes electrical control electromagnetic relief valve 18 '; make it get electric off-load; thereby save first pump (big pump) power consumption; also can be without electromagnetic relief valve 18 '; and with relief valve 18; shut down by Pc place pressure relay signalisation first pump (big pump) and save power consumption this moment; the Electrical heads of selector valve also can provide electrical signal control electromagnetic relief valve 18 ' off-load or first pump (big pump) to shut down in addition, and we call atypical double pump system (the sole piece concrete structure sees Fig. 9-1 for details to 12) to this system.System's other parts all identical (not drawing among the figure) beyond the sole piece with Fig. 4.
Among Fig. 6, the remote control mouth x of the control of electric liquid/hydraulicchange-over valve 36/37 oil oil-feed port X and relief valve picks out mutual noninterference respectively from sole piece 7; In like manner, the control of electric liquid/hydraulicchange-over valve 36/37 oil drain tap L mouth and oil return inlet T also pick out respectively from sole piece 7, mutual noninterference, and promptly Fig. 3 is a kind of special case of Fig. 6. it and Fig. 3 are both single-pump system.
Among Fig. 7, the remote control mouth x of the control of electric liquid/hydraulicchange-over valve 36/37 oil oil-feed port X and relief valve picks out mutual noninterference respectively from sole piece 7; In like manner, the control of electric liquid/hydraulicchange-over valve 36/37 oil drain tap L mouth and oil return inlet T also pick out mutual noninterference respectively from sole piece 7.Be that Fig. 4 is a kind of special case of Fig. 7.It and Fig. 4 are both the common double pumping system.
Among Fig. 8, the remote control mouth x of the control of electric liquid/hydraulicchange-over valve 36/37 oil oil-feed port X and relief valve picks out mutual noninterference respectively from sole piece 7; In like manner, the control of electric liquid/hydraulicchange-over valve 36/37 oil drain tap L mouth and oil return inlet T also pick out mutual noninterference respectively from sole piece 7.Be that Fig. 5 is a kind of special case of Fig. 8.It and Fig. 5 are both atypical double pump system.
The sole piece of three kinds of double pump systems described in the present invention (common double pumping system, atypical double pump system, special double pump system) suitably increases the formation of relevant duct by the sole piece of single-pump system under the situation of all the other duct invariant positions; The common double pumping system is realized the double pump interlocking by hydraulic circuit xp, and special double pump system, atypical double pump system are by electric realization double pump interlocking; The second oil inlet passage p of common double pumping system, atypical double pump system 3Oil inlet passage p behind the one-way valve of sole piece 7 2On pick out; The second oil inlet passage p ' of special double pump system utilizes DN10 Sandwich plate valve T BMouth transforms P ' interruption-forming into.
Matrix, sole piece, selector valve, Sandwich plate valve can increase and decrease according to user's needs among the present invention, and be very convenient; Contiguous block is for selecting structure for use, and the user is the whole or one, two of the return filter in the selected module, filter-press, second filter-press as required, and the user also can select plain filter for use certainly, and corresponding supporting with it interface is arranged on the sole piece.
The present invention had both supported vertical installation (long bolt is parallel with vertical curve), supported horizontal installation (long bolt is parallel with horizontal line) again.It is convenient to take over during vertical installation, and floor space is little; Matrix layer stackable during horizontal the installation is more.
Arrow is represented the flow direction of fluid in each accompanying drawing.
The code name explanation:
P: the pressure oil import of Sandwich plate valve/selector valve/relief valve (also referring to be attached thereto the port of passage in the module);
T: the return opening of Sandwich plate valve/selector valve/relief valve (also referring to be attached thereto the port of passage in the module);
T A: first return opening (also referring to be attached thereto the port of passage in the module) that contains the Sandwich plate valve/selector valve of two return openings;
T B: second return opening (also referring to be attached thereto the port of passage in the module) that contains the Sandwich plate valve/selector valve of two return openings;
A: Sandwich plate valve/selector valve provides the actuator port (also referring to be attached thereto the port of passage in the module) of pressure oil to executive component;
B: Sandwich plate valve/selector valve provides another actuator port (also referring to be attached thereto the port of passage in the module) of pressure oil to executive component;
X: electric liquid/hydraulicchange-over valve or with it the Sandwich plate valve of same specification control oily oil-feed port (also referring to be attached thereto the port of passage in the module);
Y: electric liquid/hydraulicchange-over valve or with it the Sandwich plate valve of same specification control oily oil drain out (also referring to be attached thereto the port of passage in the module);
L: electric liquid/hydraulicchange-over valve or with it the Sandwich plate valve of same specification control oily drain tap (also referring to be attached thereto the port of passage in the module);
P1: the pressure port of the filler opening/relief valve of one-way valve (also referring to be attached thereto the port of passage in the module);
P2: the oil outlet of one-way valve (also referring to be attached thereto the port of passage in the module);
P ': the oil outlet of second oil inlet passage (also referring to be attached thereto the port of passage in the module);
YM: relief valve 18/ electromagnetic relief valve 18 ' attachment face;
DM: one-way valve 19 attachment faces;
1: the first matrix; The 11:DN10 Sandwich plate valve;
2: the second matrixs; The 12:DN10 selector valve;
3: the three matrixs; 13:DN10 specific function Sandwich plate valve (relief valve);
4: the four matrixs; 14:DN10 specific function Sandwich plate valve (throttle valve);
5: jacking block; 15: return filter;
6: contiguous block; 16: high pressure filter;
7: sole piece; 17: the second high pressure filters;
8: long bolt; 18: relief valve (18 ': electromagnetic relief valve);
The 9:DN6 Sandwich plate valve; 19: one-way valve;
The 10:DN6 selector valve; 20: one-way valve (user is external during double pump system);
The P mouth the other end of 21: one termination Sandwich plate valve/selector valves taps into oily passage p/p 2Passage [matrix];
One of another termination executive component of A mouth of 22: one termination Sandwich plate valve/selector valves advances/passage [matrix] of return opening;
Another of another termination executive component of B mouth of 23: one termination Sandwich plate valve/selector valves advance/passage [matrix] of return opening;
The T/T of 24: one termination Sandwich plate valve/selector valves AThe mouth the other end takes back the passage [matrix] of oily passage t;
The T of 25: one termination Sandwich plate valve/selector valves BThe passage of another termination of mouth second oil inlet passage p ' is (as DN10 Sandwich plate valve/selector valve T BWhen mouth transforms into and provides pressure oil by second pump and form special double pump system in conjunction with the Sandwich plate valve of specific function for P ' mouthful) [matrix];
The passage t the other end takes back the passage [contiguous block] of the filler opening of oil strainer in 26: one termination matrixs;
The passage t the other end takes back the passage [contiguous block] of the oil outlet of oil strainer in 27: one termination sole pieces;
The passage [contiguous block] of the filler opening of another termination high pressure filter of passage p in 28: one termination matrixs;
The passage [contiguous block] of the oil outlet of another termination high pressure filter of passage p in 29: one termination sole pieces;
The passage [contiguous block] of the filler opening of another termination second high pressure filter of passage p ' in 30: one termination matrixs;
The passage [contiguous block] of the oil outlet of another termination second high pressure filter of passage p ' in 31: one termination sole pieces;
32: executive component (oil cylinder, oil hydraulic motor etc.);
33:DN6 or DN10 Sandwich plate valve;
34:DN6 or DN10 selector valve;
35:DN16, DN20 or DN32 Sandwich plate valve;
36:DN16, DN20 or DN32 electro-hydraulic reversing valve;
37:DN16, DN20 or DN32 hydraulicchange-over valve;
38: the overlapping relief valve that unnecessary pressure oil overflow is provided for second pump in common double pumping system, the atypical double pump system;
39: mounting screw;
The X mouth the other end of 40: one termination Sandwich plate valves or electric liquid/hydraulicchange-over valve is connected the passage [matrix] of road a;
The Y mouth the other end of 41: one termination Sandwich plate valves or electric liquid/hydraulicchange-over valve is connected the passage [matrix] of road b;
The L mouth the other end of 42: one termination Sandwich plate valves or electric liquid/hydraulicchange-over valve is connected the passage [matrix] of road c;
43: remote-control relief valve;
P: oil inlet passage (to the general designation of oil inlet passage before the one-way valve and the oil inlet passage behind the one-way valve);
p 1: the oil inlet passage before the one-way valve (fluid also do not flow through one-way valve) [sole piece];
p 2: the oil inlet passage behind the one-way valve (fluid is flowed through behind the one-way valve) [matrix, sole piece];
p 3: the second oil pump feed passage [sole piece] in common double pumping system or the atypical double pump system;
P ': second oil inlet passage is (as DN10 Sandwich plate valve/selector valve T BMouth transform into for P ' mouthful by second pump when it provides power oil and forms special double pump system in conjunction with the Sandwich plate valve of specific function) [matrix, sole piece];
T: drainback passage [matrix, sole piece];
A: control oily oil supply gallery (when selector valve is electro-hydraulic reversing valve or hydraulicchange-over valve) [matrix, sole piece];
B: control oily oil drain passage (when selector valve is electro-hydraulic reversing valve or hydraulicchange-over valve) [matrix, sole piece];
C: control oily draining passage (when selector valve is electro-hydraulic reversing valve or hydraulicchange-over valve) [matrix, sole piece];
Kx: the remote-control channel of electromagnetic relief valve/relief valve (inoperative during internal control, as to connect the pressure port of remote-control relief valve during external control) [sole piece];
Cp: the oil inlet passage p behind the survey one-way valve 2The measuring pressure passage of interior oil pressure [sole piece];
Sx: the plug screw [sole piece] whether the remote control mouth x of X and the relief valve of decision electro-hydraulic reversing valve/hydraulicchange-over valve is related;
S1: the plug screw [sole piece] whether the T of L and the relief valve of decision electro-hydraulic reversing valve/hydraulicchange-over valve is related;
Xp: connecting passage p 2Or the passage of Cp and Kx [sole piece];
Xx: the public input port [sole piece] after the remote-control channel Kx that controls oily oil supply gallery a and relief valve unites two into one.

Claims (13)

1. one kind by the integrated hydraulic system of hydraulic module, comprises power source, hydraulic module, control valve, executive component etc., it is characterized in that: described hydraulic module comprises a jacking block, sole piece, a n matrix, and n is natural number and n 〉=2; Have in each matrix: the P mouth the other end of passage, a termination Sandwich plate valve or the selector valve of another another hydraulic fluid port of termination executive component of B mouth of passage, a termination Sandwich plate valve or the selector valve of another termination executive component one hydraulic fluid port of A mouth of oil inlet passage (p), drainback passage (t), a termination Sandwich plate valve or selector valve taps into the T mouth or the T of passage, a termination Sandwich plate valve or the selector valve of oily passage (p) AThe mouth the other end takes back the passage of oily passage (t); In sole piece, have: oil inlet passage (p), drainback passage (t); Also be connected with a control valve on sole piece at least, described control valve can be connected in the oil inlet passage (p) of sole piece, in the drainback passage (t) or between oil inlet passage (p) and the drainback passage (t); First matrix, second matrix ... the n matrix superposes successively and becomes to removably connect, first matrix becomes to removably connect with sole piece again, the jacking block sealing that the port quilt and the n matrix of the oil inlet passage on the n matrix (p), drainback passage (t) becomes to removably connect; Oil inlet passage (p) in each matrix, the sole piece, drainback passage (t) are communicated with.
2. according to claim 1 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: described hydraulic module also comprises a contiguous block that is connected between matrix and sole piece, has in contiguous block: oil inlet passage (p), drainback passage (t); The filter that has one-tenth with it to removably connect on contiguous block, described filter are the filter-press in the oil inlet passage (p) that is connected to contiguous block and/or are connected to return filter in the drainback passage (t); Oil inlet passage (p) in the contiguous block, drainback passage (t) are communicated with oil inlet passage (p), drainback passage (t) in matrix, the sole piece respectively.
3. according to claim 1 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: the described control valve that is connected on the sole piece is relief valve and one-way valve of a band remote control mouth; One-way valve is connected in the oil inlet passage (p) of sole piece, and (p) is divided into two-part with oil inlet passage: a part is the preceding oil inlet passage (p of one-way valve 1), the oil inlet passage when promptly fluid is not also flowed through one-way valve, second portion are the oil inlet passage (p behind the one-way valve 2), i.e. the fluid oil inlet passage behind the one-way valve of flowing through; Described relief valve is connected to oil inlet passage (p 1) and drainback passage (t) between; Oil inlet passage (p in the sole piece 2) and the interior oil inlet passage (p of matrix 2) be communicated with; In sole piece, also have: the remote-control channel (Kx) that connects relief valve remote control mouth.
4. according to claim 3 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: in sole piece, increase a passage (xp), this passage (xp) termination passage (p 2) the other end connection road (Kx).
5. according to claim 3 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: in each matrix of the 1st to m of stack, increased i.e. second oil inlet passage (p ') and a termination second oil inlet passage (p ') another termination Sandwich plate valve or the selector valve T of two passages BThe passage of mouth, m is natural number and n 〉=m 〉=1; Also corresponding second oil inlet passage that is communicated with second oil inlet passage (p ') in the matrix (p ') that increased in sole piece; This moment Sandwich plate valve or selector valve T AMouth communicates with drainback passage (t).
6. according to claim 5 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: described hydraulic module also comprises a contiguous block that is connected between matrix and sole piece, has in contiguous block: second oil inlet passage (p '), oil inlet passage (p 2), drainback passage (t); The filter that has one-tenth with it to removably connect on contiguous block, described filter be for being connected to second filter-press in contiguous block second oil inlet passage (p '), and/or be connected to oil inlet passage (p 2) in filter-press, and/or be connected to return filter in the drainback passage (t); Second oil inlet passage in the contiguous block (p '), oil inlet passage (p 2), drainback passage (t) respectively with matrix, sole piece in second oil inlet passage (p '), oil inlet passage (p 2), drainback passage (t) is communicated with.
7. according to claim 3 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: in each matrix of the 1st to m of stack, increased: control oily oil supply gallery (a) with lower channel, control oily oil drain passage (b), control oily draining passage (c), another termination of X mouth of one termination Sandwich plate valve or selector valve is controlled the passage of oily oil supply gallery (a), another termination of Y mouth of one termination Sandwich plate valve or selector valve is controlled the passage of oily oil drain passage (b), another termination of L mouth of one termination Sandwich plate valve or selector valve is controlled the passage of oily draining passage (c), and m is natural number and n 〉=m 〉=1; Also correspondingly in sole piece increased following structure: control oily oil supply gallery (a), control oily oil drain passage (b), control oily draining passage (c); Each matrix of the 1st to m, sole piece internal channel (a) are communicated with, passage (b) is communicated with, passage (c) is communicated with.
8. according to claim 7 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: described hydraulic module also comprises a contiguous block that is connected between matrix and sole piece, in contiguous block, have with matrix, sole piece in passage (a) and (b), passage (a) and (b) that (c) is communicated with, (c) and with matrix, sole piece in oil inlet passage (p 2), the oil inlet passage (p that is communicated with of drainback passage (t) 2), drainback passage (t); The filter that has one-tenth with it to removably connect on contiguous block, described filter is for being connected to contiguous block oil inlet passage (p 2) in filter-press and/or be connected to return filter in the drainback passage (t).
9. according to claim 7 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: in sole piece, increase a passage (xp), this passage (xp) termination oil inlet passage (p 2) remote-control channel (Kx) of another termination relief valve.
10. according to claim 7 a kind ofly be it is characterized in that by the integrated hydraulic system of hydraulic module, increased following structure in sole piece: another termination of the remote-control channel of a termination relief valve (Kx) is controlled oily oil supply gallery (a) and passage (G with threaded hole X), with passage (G X) plug screw that matches (Sx), another termination of termination drainback passage (t) control the passage (G with threaded hole of oily draining passage (c) L), with passage (G L) plug screw that matches (S1); Passage (G X) with passage (Kx) with after passage (a) is communicated with, input port with passage (Kx) seals again, as passage (Kx) and the public input port of passage (a), plug screw (Sx) is used for whether fluid collaborates in control channel (Kx) and the passage (a) with the input port of passage (a); Passage G LWith passage (c) with after passage (t) is communicated with, output port with passage (c) seals again, as passage (t) and passage (c) public output mouth, plug screw (S1) is used for whether fluid collaborates in control channel (c) and the passage (t) with the output port of passage (t).
11. according to claim 7 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: increase by one and passage (p in sole piece 2) passage (p that communicates 3), passage (p 3) external another one-way valve of port, connect second pump in this external check valve inlet again and form a kind of double pump system.
12. according to claim 9 a kind of by the integrated hydraulic system of hydraulic module, it is characterized in that: increase by one and passage (p in sole piece 2) passage (p that communicates 3), passage (p 3) external another one-way valve of port, connect second pump in this external check valve inlet again and form a kind of double pump system.
13. it is described any by the integrated hydraulic system of hydraulic module according to claim 1~12, it is characterized in that: Placement is following structure between jacking block, matrix, the sole piece: the double end long bolt is worn jacking block, first matrix, second matrix, the 3rd matrix successively ... behind the n matrix, one end is screwed in the sole piece in the respective threads hole, and the other end is with nut and tight.
CNB031323103A 2003-08-13 2003-08-13 Hydraulic system integrated with hydranlic blocks Expired - Fee Related CN1299013C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB031323103A CN1299013C (en) 2003-08-13 2003-08-13 Hydraulic system integrated with hydranlic blocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB031323103A CN1299013C (en) 2003-08-13 2003-08-13 Hydraulic system integrated with hydranlic blocks

Publications (2)

Publication Number Publication Date
CN1514139A true CN1514139A (en) 2004-07-21
CN1299013C CN1299013C (en) 2007-02-07

Family

ID=34239831

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB031323103A Expired - Fee Related CN1299013C (en) 2003-08-13 2003-08-13 Hydraulic system integrated with hydranlic blocks

Country Status (1)

Country Link
CN (1) CN1299013C (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010099699A1 (en) * 2009-03-06 2010-09-10 上海人豪液压技术有限公司 Combined hydraulic integrated control valve block system
CN102536961A (en) * 2011-12-16 2012-07-04 云南兴长江实业有限公司 Hydraulic component integrated testing device and machining method thereof
CN102718145A (en) * 2012-03-23 2012-10-10 昆山三一机械有限公司 Crawler crane modularized hydraulic system and crane comparing same
CN102720729A (en) * 2012-06-28 2012-10-10 浙江欧华造船有限公司 Hydraulic integration system for building ship in modularization mode
CN102734278A (en) * 2012-07-19 2012-10-17 北京理工大学 Hierarchical design method for hydraulic control module of electrohydraulic control system
CN102788049A (en) * 2012-07-19 2012-11-21 北京理工大学 Hydraulic control module of electrohydraulic control system
CN103047225A (en) * 2012-12-18 2013-04-17 北京二七轨道交通装备有限责任公司 Hydraulic pipeline integrated block and hydraulic system
CN111120441A (en) * 2020-01-10 2020-05-08 李贵伦 Plate-type connection is turning block for hydraulic valve

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58211001A (en) * 1982-06-02 1983-12-08 Hitachi Constr Mach Co Ltd Collected control valve
CN2090449U (en) * 1990-09-29 1991-12-11 吴寿根 Multicylinder speed synchronizing valve
JP4016152B2 (en) * 1997-11-10 2007-12-05 Smc株式会社 Switching valve assembly
DE29905865U1 (en) * 1999-03-31 1999-06-17 Festo Ag & Co Valve unit
DE19932358C2 (en) * 1999-07-10 2003-01-02 Festo Ag & Co valve battery
DE10038288C2 (en) * 2000-08-05 2002-11-14 Festo Ag & Co Electro-fluidic control device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010099699A1 (en) * 2009-03-06 2010-09-10 上海人豪液压技术有限公司 Combined hydraulic integrated control valve block system
CN102536961B (en) * 2011-12-16 2014-09-17 云南兴长江实业有限公司 Hydraulic component integrated testing device and machining method thereof
CN102536961A (en) * 2011-12-16 2012-07-04 云南兴长江实业有限公司 Hydraulic component integrated testing device and machining method thereof
CN102718145A (en) * 2012-03-23 2012-10-10 昆山三一机械有限公司 Crawler crane modularized hydraulic system and crane comparing same
CN102718145B (en) * 2012-03-23 2015-05-20 昆山三一机械有限公司 Crawler crane modularized hydraulic system and crane comparing same
CN102720729A (en) * 2012-06-28 2012-10-10 浙江欧华造船有限公司 Hydraulic integration system for building ship in modularization mode
CN102788049B (en) * 2012-07-19 2015-04-15 北京理工大学 Hydraulic control module of electrohydraulic control system
CN102734278B (en) * 2012-07-19 2014-10-15 北京理工大学 Hierarchical design method for hydraulic control module of electrohydraulic control system
CN102788049A (en) * 2012-07-19 2012-11-21 北京理工大学 Hydraulic control module of electrohydraulic control system
CN102734278A (en) * 2012-07-19 2012-10-17 北京理工大学 Hierarchical design method for hydraulic control module of electrohydraulic control system
CN103047225A (en) * 2012-12-18 2013-04-17 北京二七轨道交通装备有限责任公司 Hydraulic pipeline integrated block and hydraulic system
CN103047225B (en) * 2012-12-18 2015-12-16 北京二七轨道交通装备有限责任公司 Hydraulic pipe line integrated package and hydraulic system
CN111120441A (en) * 2020-01-10 2020-05-08 李贵伦 Plate-type connection is turning block for hydraulic valve

Also Published As

Publication number Publication date
CN1299013C (en) 2007-02-07

Similar Documents

Publication Publication Date Title
CN1299013C (en) Hydraulic system integrated with hydranlic blocks
CN202370773U (en) High-pressure small-discharge hydraulic profile control water plugging pump
CN1807901A (en) Hydraulic controller and hydraulic drive unit provided with said hydraulic controller
CN104562117A (en) Electroplating device for inner surface of cylinder
CN108999826A (en) Raise boring machine multifunction hydraulic integrates valve group
CN210440005U (en) Hydraulically-driven split type well cementing pry
CN203718353U (en) Oil pump with pressure limiting valve
CN106121882A (en) Double ejector pump oil pump brackets
CN1789733A (en) Double pump confluence type multi-way ratio control valve with load sensitivity information circuit
CN101705853B (en) Automotive engine lubrication cooling device
CN202348610U (en) Pump station for hydraulic wrench
CN208057340U (en) A kind of buoyancy adjustment plunger pump device
CN1314864C (en) Tap water pipe line direct multistage parallel pressurization device
CN2742204Y (en) Double U-shape butt welding anti-leaking oil tank
CN202493423U (en) Hydraulic cylinder structure for use in drilling pump
CN202223948U (en) Pumping station of filter press
CN203978747U (en) Petrol engine drives swash plate plunger copper pump
CN103161463A (en) Dynamic oiling device used for hydraulic system of coal mining machine
CN204163974U (en) Plunger pump
CN2775343Y (en) Submersible water pump
CN209157151U (en) A kind of hydraulic tool fast replacing device
CN202123605U (en) Integrated oil-way channel of rubber vulcanizing machine
CN215719951U (en) Portable multifunctional motor-driven hydraulic pump
CN102423558A (en) Filter press pumping station
CN211315730U (en) Electric multipoint lubricating pump

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee