CN104912868A - Combined oil source valve - Google Patents
Combined oil source valve Download PDFInfo
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- CN104912868A CN104912868A CN201510389713.6A CN201510389713A CN104912868A CN 104912868 A CN104912868 A CN 104912868A CN 201510389713 A CN201510389713 A CN 201510389713A CN 104912868 A CN104912868 A CN 104912868A
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- valve
- valve body
- main valve
- oil
- block
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The invention relates to a combined oil source valve. The combined oil source valve comprises a main valve block, an intermediate valve block and a rear end valve block, wherein the main valve block is divided into an overflow type main valve block and a pressure relief type main valve block. The combined oil source valve is characterized in that the front side of a main valve body of the overflow type main valve block is provided with a check valve; the right lateral side of the main valve body is provided with a filter core and a filter casing; the main valve body is provided with an overflow valve, a by-pass valve, a two-position three-way electromagnetic cartridge valve, a pressure measuring point joint and a screw plug; the rear lateral side of the main valve body is provided with an energy accumulator; an intermediate valve body of the intermediate valve block is provided with a two-position three-way electromagnetic cartridge valve; a rear end valve body of the rear end valve block is provided with a two-position three-way electromagnetic cartridge valve. Compared with the prior art, the original integral type is replaced by a combined type, the design is optimized, and accordingly the combination is flexible, the extension is convenient, the weight is reduced, the cost is reduced, the standardization and serialization are easy to implement, and the like.
Description
Technical field
The invention belongs to engineering machinery field, especially a kind of combined type oil sources valve.
Background technique
Engineering machinery is various in style, strongly professional, particularly along with the development of modern agriculture, forestry and Garden Engineering etc., in order to adapt to increasing operation kind, type, need Working mechanism additional in engineering machinery be also get more and more, more and more refinement, differentiation, causing operating mechanism provides the oil sources valve of pressure source to be also various in style, has simply connected oil sources valve, two oil sources valves, three oil sources valves, tetrad oil sources valve ... Deng.On the other hand, due to the design of each engineering machinery manufacturer, select hydraulic system different, oil sources valve is divided into again overflow-type and the large class of decompression type two, simultaneously, all kinds of oil sources valve is according to function needs, be divided into again band accumulator and be not with accumulator, band pressure measuring tie-in and be not with pressure measuring tie-in, normal opened type and Normally closed type etc., making oil sources valve be subdivided into tens of kinds of models.Compared with automobile industry, because the output of engineering machinery own is just little, when kind is various again, oil sources valve cannot be produced in enormous quantities, so also cast blank cannot be carried out by mfg. moulding die, therefore oil sources valve generally uses bar type aluminium alloy section bar to carry out cutting, processing, cause layout's difficulty, amount of finish is large, stock utilization is low, simultaneously, due to small-scale, multi items, often change fixture, frock, cutter, program etc. adding man-hour requirement, make to manufacture inefficiency, lead time is long.
Summary of the invention
The object of the invention is to for above situation, oil sources valve arrangement is improved, optimize design, integrated type is changed into separate assembling, achieved standardization, seriation, developed, manufactured mould, substantially increase stock utilization, easy processing simultaneously, is applicable to quick, scale manufacturing, is conducive to reducing costs, shortening the manufacturing cycle.
As follows for reaching the technical solution that above-mentioned object takes:
1, a kind of combined type oil sources valve, comprise main valve block, intervening valve block, rear end valve block three parts composition, main valve block is divided into again overflow-type main valve block and decompression type main valve block two kinds, it is characterized in that, one-way valve is installed in the main valve body front of described overflow-type main valve block, at the right flank of main valve body, filter core and filter head housings are installed, on main valve body, relief valve is installed, bypass valve, two-position three-way electromagnetic cartridge valve, pressure-measuring point joint, plug screw, at the trailing flank of main valve body, accumulator is installed, above the center valve body of described intervening valve block, two-position three-way electromagnetic cartridge valve is installed, the two-position three-way electromagnetic of the installation above cartridge valve of the rear end valve body of described rear end valve block.
2, a kind of combined type oil sources valve as described in technological scheme 1, it is characterized in that, the main valve body front of described main valve block is provided with into boss of answering back, for processing, arrange oil inlet P, oil return inlet T, main valve body is provided with unidirectional valve opening, the first valve oil outlet PV, the second oil return inlet T 2, unidirectional valve opening is for installing one-way valve, and the second oil return inlet T 2 is communicated with return opening by internal galleries.
3, a kind of combined type oil sources valve as claimed in claim, it is characterized in that, the right flank of the main valve body of described main valve block is provided with filter boss, and filter head housings is connected with main valve body by screw thread, and filter core is serially connected between filter head housings and main valve body.
4, a kind of combined type oil sources valve as described in technological scheme 1, it is characterized in that, the main valve body left surface of described main valve block is provided with expansion interface plane, expansion connecting thread hole, expansion oil outlet, expansion return opening and technique hydraulic fluid port is arranged for processing, and at this three hydraulic fluid ports end processing sealing counterbore, being used for dress O shape circle joins with next and seals.
5, a kind of combined type oil sources valve as described in technological scheme 1, it is characterized in that, be provided with the second pressure oil port, overflow valve opening, bypass valve opening, pressure-measuring point jiont treatment hole, two-position three-way electromagnetic plug-in mounting valve opening above the main valve body of described main valve block and nail was installed, centre is provided with a rib, both strengthened the intensity of main valve body, inside is provided with oil duct, for being communicated with of oil return inlet T and the second oil return inlet T 2, the trailing flank of main valve body is provided with accumulator installation base, and boss has screw mouth.
6, a kind of combined type oil sources valve as described in technological scheme 1, it is characterized in that, the center valve body front of described intervening valve block is provided with output oil port boss, for processing output oil port, is connected with executive component.
7, a kind of combined type oil sources valve as described in technological scheme 1, it is characterized in that, the center valve body right flank of described intervening valve block is sealing plane, be connected with the expansion interface plane of main valve body or a upper center valve body, be provided with pressure oil duct and communicate with the expansion oil road of main valve body expansion oil outlet or a upper center valve body; Be provided with back oil road to communicate with the expansion back oil road of main valve body expansion return opening or a upper center valve body.
8, a kind of combined type oil sources valve as described in technological scheme 1, it is characterized in that, the center valve body left surface of described intervening valve block is expansion interface plane, be provided with expansion oil road and expansion back oil road, and at this two oil ducts end processing sealing counterbore, being used for dress O shape circle joins with next and seals, counterbore is provided with above center valve body, at counterbore place processing two-position three-way electromagnetic plug-in mounting valve opening, be used for two-position three-way electromagnetic cartridge valve is installed, usually this cartridge valve is Normally closed type, and the trailing flank of center valve body is provided with a groove.
9, a kind of combined type oil sources valve as described in technological scheme 1, is characterized in that, the rear end valve body left surface of described rear end valve block is provided with 4 mistake nail and leads directly to right flank, and is provided with screw counter bore at aperture place.
The present invention, compared with the integrated type oil sources valve of routine, becomes combined type from original integrated type, and optimizes design, make it have combination flexibly, be convenient to expansion, weight reduction, reduce costs, be easy to realize the advantage such as standardization and seriation.
accompanying drawing illustrates:
Fig. 1 is overflow-type oil sources valve arrangement plan view of the present invention,
Fig. 2 is overflow-type oil sources valve arrangement plan view of the present invention,
Fig. 3 is main valve body structural front view of the present invention,
Fig. 4 is main valve body structure right elevation of the present invention,
Fig. 5 is main valve body structure left view of the present invention,
Fig. 6 is main valve body structure plan view of the present invention,
Fig. 7 is main valve body structure worm's eye view of the present invention,
Fig. 8 is main valve body structure rear view of the present invention,
Fig. 9 is center valve body structural front view of the present invention,
Figure 10 is center valve body structure right elevation of the present invention,
Figure 11 is center valve body structure left view of the present invention,
Figure 12 is center valve body structure plan view of the present invention,
Figure 13 is rear end of the present invention valve body structure plan view,
Figure 14 is rear end of the present invention valve body structure left view,
Figure 15 is decompression type oil sources valve arrangement plan view of the present invention,
Figure 16 is decompression type oil sources valve arrangement plan view of the present invention.
In Fig. 1 ~ Figure 16, main valve block (1), main valve body (1-1), filter head housings (1-2), filter core (1-3), relief valve (1-4), bypass valve (1-5), one-way valve (1-6), two-position three-way electromagnetic cartridge valve (1-7), pressure-measuring point joint (1-8), accumulator (1-9), enter to answer back boss (1-1-1), arrange oil inlet P (1-1-2), oil return inlet T (1-1-3), unidirectional valve opening (1-1-4), first valve oil outlet PV(1-1-5), second oil return inlet T 2(1-1-6), filter boss (1-1-7), expansion interface plane (1-1-8), tapped hole (1-1-9), expansion oil outlet (1-1-10), expansion return opening (1-1-11), technique hydraulic fluid port (1-1-12), second pressure oil port (1-1-13), overflow valve opening (1-1-14), bypass valve opening (1-1-15), pressure-measuring point jiont treatment hole (1-1-16), two-position three-way electromagnetic plug-in mounting valve opening (1-1-17), cross nail (1-1-18), boss plane (1-1-19), rib (1-1-20), intervening valve block (2), center valve body (2-1), two-position three-way electromagnetic cartridge valve (2-2), output oil port boss (2-1-1), output oil port (2-1-2), sealing plane (2-1-3), pressure oil duct (2-1-4), back oil road (2-1-5), expansion interface plane (2-1-6), oil road (2-1-7), back oil road (2-1-8), cross nail (2-1-9), counterbore (2-1-10), two-position three-way electromagnetic plug-in mounting valve opening (2-1-11), groove (2-1-12), rear end valve block (3), rear end valve body (3-1), cross nail (3-1-1), counterbore (3-1-2), decompression type main valve block (1A-1), decompression cartridge valve (1A-2), safety valve (1A-3).
embodiment:
Below in conjunction with drawings and Examples, the present invention is further described:
With reference to Fig. 1, shown in Fig. 2, a kind of combined type oil sources valve, comprise main valve block, intervening valve block, rear end valve block three parts composition, main valve block is divided into again overflow-type main valve block and decompression type main valve block two kinds, wherein, one-way valve 1-6 is installed in the main valve body 1-1 front of described overflow-type main valve block 1, at the right flank of main valve body 1-1, filter core 1-3 and filter head housings 1-2 is installed, on main valve body 1-1, relief valve 1-4 is installed, bypass valve 1-5, two-position three-way electromagnetic cartridge valve 1-7, pressure-measuring point joint 1-8, plug screw 1-10, at the trailing flank of main valve body, accumulator 1-9 is installed, two-position three-way electromagnetic cartridge valve 2-2 is installed above the center valve body 2-1 of described intervening valve block 2, the two-position three-way electromagnetic of the installation above cartridge valve 2-2 of the rear end valve body 3-1 of described rear end valve block 3.
As shown in Figure 3, the main valve body 1-1 front of main valve block 1 is provided with into the boss 1-1-1 that answers back, for processing, arrange oil inlet P 1-1-2, oil return inlet T 1-1-3, main valve body 1-1 is provided with unidirectional valve opening 1-1-4, the first valve oil outlet PV1-1-5, the second oil return inlet T 21-1-6, unidirectional valve opening 1-1-4 is for installing one-way valve 1-6, and the second oil return inlet T 21-1-6 is communicated with return opening 1-1-3 by internal galleries.
As shown in Figure 4, the right flank of main valve body 1-1 is provided with filter boss 1-1-7, and filter head housings 1-2 is connected with main valve body 1-1 by screw thread, and filter core 1-3 is serially connected between filter head housings 1-2 and main valve body 1-3.
As shown in Figure 5, the left surface of main valve body 1-1 is provided with expansion interface plane 1-1-8, expansion connecting thread hole 1-1-9, expansion oil outlet 1-1-10, expansion return opening 1-1-11 and technique hydraulic fluid port 1-1-12 is arranged for processing, and at this three hydraulic fluid ports end processing sealing counterbore, being used for dress O shape circle joins with next and seals, if oil sources valve only has one, when being oil sources valve without the need to expanding, with screw plug, expansion oil outlet 1-1-10, expansion return opening 1-1-11 and technique hydraulic fluid port 1-1-12 are blocked.
As shown in Figure 6, main valve body 1-1 is provided with the second pressure oil port 1-1-13 above, overflow valve opening 1-1-14, bypass valve opening 1-1-15, pressure-measuring point jiont treatment hole 1-1-16, two-position three-way electromagnetic plug-in mounting valve opening 1-1-17 and installed nail 1-1-18, second pressure oil port 1-1-13 place plug screw is blocked, plug screw can be taken apart if needed, as the pressure oil port in other loop, overflow valve opening 1-1-14 place is used for installing relief valve 1-4, adjust the working pressure of oil sources valve as required, bypass valve 1-5 is installed at bypass valve opening 1-1-15 place, do not racked after ensureing filter core blocking, pressure-measuring point joint 1-8 is installed at 1-1-16 place, pressure-measuring point jiont treatment hole, pressure-measuring point joint 1-8 is installed if do not needed, then block with plug screw, electromagnetic cartridge valve 1-7 is installed at two-position three-way electromagnetic plug-in mounting valve opening 1-1-17 place, normal opened type or Normally closed type can be selected as required, three nail 1-1-18 was installed then to be used for an oil sources valve and to be fixed in engineering machinery.
As shown in Figure 7, it is attachment face below main valve body 1-1, be provided with installation base plane 1-1-19, decrease material consumption, decrease amount of finish, centre is provided with a rib 1-1-20, has both strengthened the intensity of main valve body 1-1 simultaneously, inside is provided with oil duct, for being communicated with of oil return inlet T 1-1-3 and the second oil return inlet T 21-1-6.
As shown in Figure 8, the trailing flank of main valve body 1-1 is provided with accumulator 1-9 installation base 1-1-21, boss has screw mouth, according to selection, whether accumulator 1-9 can be installed, if do not needed to install, then block with plug screw, because main valve body 1-1 is cast structure, make full use of the features such as boss, groove, rib, stock utilization is high, compared with bar formula section bar, its material consumption reduces about 35%.
As shown in Figure 9, the center valve body 2-1 front of intervening valve block 2 is provided with output oil port boss 2-1-1, for processing output oil port 2-1-2, is connected with executive component.
As shown in Figure 10, center valve body 2-1 right flank is sealing plane 2-1-3, be connected with the expansion interface plane of main valve body 1-1 or a upper center valve body 2-1, be provided with pressure oil duct 2-1-4 and communicate with the expansion oil road of main valve body expansion oil outlet or a upper center valve body; Be provided with back oil road 2-1-5 to communicate with the expansion back oil road of main valve body expansion return opening or a upper center valve body.
As shown in figure 11, center valve body 2-1 left surface is expansion interface plane 2-1-6, is provided with expansion oil road 2-1-7 and expansion back oil road 2-1-8, and at this two oil ducts end processing sealing counterbore, is used for dress O shape circle to join with next and seal.In addition, be also provided with 4 mistake nail 2-1-9 and lead directly to right flank, to be connected with main valve body 1-1 with screw.
As shown in figure 12, center valve body 2-1 is provided with counterbore 2-1-10 above, at counterbore place processing two-position three-way electromagnetic plug-in mounting valve opening 2-1-11, be used for installing two-position three-way electromagnetic cartridge valve 2-2, this cartridge valve is Normally closed type usually, the trailing flank of center valve body 2-1 is provided with a groove 2-1-12, to reduce material, weight reduction, because the structure of center valve body 2-1 takes full advantage of material, therefore, compared with all-in-one-piece one, material consumption reduces about 50%.
As shown in Figure 13,14, the rear end valve body 3-1 left surface of rear end valve block 3, be provided with 4 mistake nail 3-1-1 and lead directly to right flank, and be provided with counterbore 3-1-2 at aperture place, to allow screw head ensconce wherein, screw head is avoided too much to expose end face, play beauty function, the rear end valve body 3-1 of rear end valve block 3 is identical with center valve body 2-1 blank, except left surface, all the other structures are identical, because rear end valve block 3 is last connection of oil sources valve, therefore left surface does not need as expansion interface plane, so do not need oil road and the back oil road of processing expansion yet.
As shown in Figure 15,16, the difference of decompression type main valve block 1A-1 and overflow-type main valve block 1-1 is: the second pressure oil port 1-1-13 on overflow-type main valve body 1-1, change and be processed as reduction valve jack, is used for installing decompression cartridge valve 1A-2; The overflow valve opening 1-1-14 on overflow-type main valve body 1-1, change and be processed as safe valve opening, be used for mounting safety valve 1A-3.All the other both structures are identical, so both blanks are identical, are beneficial to scale cast blank.
When oil sources valve is two formula oil sources valve, then in the front of main valve body 1-1, one-way valve 1-6 is installed by end valve 3 pieces of groups after a main valve block 1 and, at the right flank of main valve body 1-1, filter core 1-3 and filter head housings 1-2 is installed, on main valve body 1-1, relief valve 1-4, bypass valve 1-5, two-position three-way electromagnetic cartridge valve 1-7, pressure-measuring point joint 1-8, plug screw 1-10 are installed, at the trailing flank of main valve body 1-1, accumulator 1-9 is installed, composition main valve block 1; Wherein, whether pressure-measuring point joint 1-8 and accumulator 1-9, according to user's requirement, can select to install, as installed, then block with plug screw; Two-position three-way electromagnetic cartridge valve 2-2 is installed on center valve body 2-1, composition intervening valve block 2; Two-position three-way electromagnetic cartridge valve 2-2 is installed on the valve body 3-1 of rear end, end valve block 3 after composition.
When oil sources valve is single-plicate oil sources valve, then only need main valve block 1, and expansion oil outlet 1-1-10, the expansion return opening 1-1-11 of main valve body 1-1 left surface and technique hydraulic fluid port 1-1-12 plug screw are blocked.
When oil sources valve is two formula oil sources valve, be then made up of end valve 3 pieces after a main valve block 1 and, by screw 3-2, rear end valve block 3 be serially connected with main valve block 1, interface plane place seal with O ring.
When oil sources valve is multiple oil sources valve (more than three or three, be set to n connection) time, then be made up of end valve block 3 after a main valve block 1, a n-2 intervening valve block 2 and, by screw 3-2, rear end valve block 3, a n-2 intervening valve block 2 are serially connected with main valve block 1, each interface plane place seal with O ring.Wherein, n is oil sources valve valve connection number, in this way tri-coupling type oil sources valve, then n=3, and intervening valve number of blocks is 3-2=1, in this way 5-linked formula oil sources valve, then intervening valve number of blocks is 5-2=3, the like.
Described decompression type oil sources valve is substantially identical with the structure of overflow-type oil sources valve, just replaces overflow-type main valve block 1 with decompression type main valve block.
The present invention has only used two kinds of blanks due to combined type oil sources valve, and blank dimension is little, is conducive to scale casting and reduces die cost; Due to construction standard, main valve body, center valve body and rear end valve body, can carry out batch process production as required, and the oil sources valve of the various different valve connection number of composition, substantially increases manufacturing efficiency, shorten lead time flexibly; Meanwhile, adopt fabricated structure, the large raising of stock utilization, and valve connection number is more, stock utilization is higher, is conducive to cost-saving, increases the benefit.
Claims (9)
1. a combined type oil sources valve, comprise main valve block, intervening valve block, rear end valve block three parts composition, main valve block is divided into again overflow-type main valve block and decompression type main valve block two kinds, it is characterized in that, one-way valve (1-6) is installed in main valve body (1-1) front of described overflow-type main valve block (1), at the right flank of main valve body (1-1), filter core (1-3) and filter head housings (1-2) are installed, relief valve (1-4) is installed on main valve body (1-1), bypass valve (1-5), two-position three-way electromagnetic cartridge valve (1-7), pressure-measuring point joint (1-8), plug screw (1-10), at the trailing flank of main valve body, accumulator (1-9) is installed, the center valve body (2-1) of described intervening valve block (2) installs two-position three-way electromagnetic cartridge valve (2-2) above, installation two-position three-way electromagnetic cartridge valve (2-2) above of the rear end valve body (3-1) of described rear end valve block (3).
2. a kind of combined type oil sources valve as claimed in claim 1, it is characterized in that, main valve body (1-1) front of described main valve block (1) is provided with into boss of answering back (1-1-1), for processing, arrange oil inlet P (1-1-2), oil return inlet T (1-1-3), main valve body (1-1) is provided with unidirectional valve opening (1-1-4), the first valve oil outlet PV(1-1-5), the second oil return inlet T 2(1-1-6), unidirectional valve opening (1-1-4) is for installing one-way valve (1-6), the second oil return inlet T 2(1-1-6) communicated with return opening (1-1-3) by internal galleries.
3. a kind of combined type oil sources valve as claimed in claim 1, it is characterized in that, the right flank of the main valve body (1-1) of described main valve block (1) is provided with filter boss (1-1-7), filter head housings (1-2) is connected with main valve body (1-1) by screw thread, and filter core (1-3) is serially connected between filter head housings (1-2) and main valve body (1-3).
4. a kind of combined type oil sources valve as claimed in claim 1, it is characterized in that, main valve body (1-1) left surface of described main valve block (1) is provided with expansion interface plane (1-1-8), expansion connecting thread hole (1-1-9), expansion oil outlet (1-1-10), expansion return opening (1-1-11) and technique hydraulic fluid port (1-1-12) is arranged for processing, and at this three hydraulic fluid ports end processing sealing counterbore, being used for dress O shape circle joins with next and seals.
5. a kind of combined type oil sources valve as claimed in claim 1, it is characterized in that, the main valve body (1-1) of described main valve block (1) is provided with the second pressure oil port (1-1-13) above, overflow valve opening (1-1-14), bypass valve opening (1-1-15), pressure-measuring point jiont treatment hole (1-1-16), two-position three-way electromagnetic plug-in mounting valve opening (1-1-17) and installed nail (1-1-18), centre is provided with a rib (1-1-20), both the intensity of main valve body (1-1) had been strengthened, inside is provided with oil duct, for oil return inlet T (1-1-3) and the second oil return inlet T 2(1-1-6) be communicated with, the trailing flank of main valve body (1-1) is provided with accumulator (1-9) installation base (1-1-21), boss has screw mouth.
6. a kind of combined type oil sources valve as claimed in claim 1, is characterized in that, center valve body (2-1) front of described intervening valve block (2) is provided with output oil port boss (2-1-1), for processing output oil port (2-1-2), is connected with executive component.
7. a kind of combined type oil sources valve as claimed in claim 1, it is characterized in that, center valve body (2-1) right flank of described intervening valve block (2) is sealing plane (2-1-3), be connected with the expansion interface plane of main valve body (1-1) or a upper center valve body (2-1), be provided with pressure oil duct (2-1-4) and communicate with the expansion oil road of main valve body expansion oil outlet or a upper center valve body; Be provided with back oil road (2-1-5) to communicate with the expansion back oil road of main valve body expansion return opening or a upper center valve body.
8. a kind of combined type oil sources valve as claimed in claim 1, it is characterized in that, center valve body (2-1) left surface of described intervening valve block (2) is expansion interface plane (2-1-6), be provided with expansion oil road (2-1-7) and expansion back oil road (2-1-8), and at this two oil ducts end processing sealing counterbore, being used for dress O shape circle joins with next and seals, counterbore (2-1-10) is provided with above center valve body (2-1), at counterbore place processing two-position three-way electromagnetic plug-in mounting valve opening (2-1-11), be used for two-position three-way electromagnetic cartridge valve (2-2) is installed, usually this cartridge valve is Normally closed type, the trailing flank of center valve body (2-1) is provided with a groove (2-1-12).
9. a kind of combined type oil sources valve as claimed in claim 1, is characterized in that, rear end valve body (3-1) left surface of described rear end valve block (3) is provided with 4 and crosses the straight-through right flank of nail (3-1-1), and is provided with screw counter bore (3-1-2) at aperture place.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105570224A (en) * | 2016-03-02 | 2016-05-11 | 上海神舟汽车节能环保有限公司 | Detachable hydraulic system integrated valve block device |
| CN106050777A (en) * | 2016-07-11 | 2016-10-26 | 润琛液压机械南通有限公司 | Combined pilot oil source valve |
| CN107339274A (en) * | 2017-06-20 | 2017-11-10 | 北京机械设备研究所 | A kind of oil path block combination |
| CN114033766A (en) * | 2021-10-22 | 2022-02-11 | 宁波斯达弗液压传动有限公司 | Modular assembly integrated valve block applied to hydraulic motor side |
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| CN201180706Y (en) * | 2008-03-20 | 2009-01-14 | 上海德波意液压机械有限公司 | Leading oil source control valve block |
| CN102996554A (en) * | 2012-11-27 | 2013-03-27 | 龙工（上海）桥箱有限公司 | Pilot oil source valve for excavator |
| CN204041602U (en) * | 2014-09-11 | 2014-12-24 | 慈溪市瑞天机械设备有限公司 | Combined control valve on a kind of truck crane |
| CN204783915U (en) * | 2015-07-06 | 2015-11-18 | 玉林市富山液压件制造有限公司 | Modular oil sources valve |
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| CN105570224A (en) * | 2016-03-02 | 2016-05-11 | 上海神舟汽车节能环保有限公司 | Detachable hydraulic system integrated valve block device |
| CN106050777A (en) * | 2016-07-11 | 2016-10-26 | 润琛液压机械南通有限公司 | Combined pilot oil source valve |
| CN107339274A (en) * | 2017-06-20 | 2017-11-10 | 北京机械设备研究所 | A kind of oil path block combination |
| CN107339274B (en) * | 2017-06-20 | 2019-05-31 | 北京机械设备研究所 | A kind of oil path block combination |
| CN114033766A (en) * | 2021-10-22 | 2022-02-11 | 宁波斯达弗液压传动有限公司 | Modular assembly integrated valve block applied to hydraulic motor side |
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