CN105782500B - A kind of large-duty loader hydraulic valve casting - Google Patents
A kind of large-duty loader hydraulic valve casting Download PDFInfo
- Publication number
- CN105782500B CN105782500B CN201610257666.4A CN201610257666A CN105782500B CN 105782500 B CN105782500 B CN 105782500B CN 201610257666 A CN201610257666 A CN 201610257666A CN 105782500 B CN105782500 B CN 105782500B
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- runner
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- flow channels
- transverse flow
- oil groove
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a kind of large-duty loader hydraulic valve casting, including valve body, vertical run, horizontal run, auxiliary flow and runner mouth, six vertical runs are equipped in valve body, seven horizontal longitudinal runners and four horizontal cross runners, first to the 6th longitudinal runner and four mutual unicom of transverse flow channels, second transverse flow channels and third transverse flow channels are connected with the 7th longitudinal runner, first transverse flow channels are connected with the 7th longitudinal runner by oblique runner, 4th transverse flow channels are not connected with the 7th longitudinal runner, midpoint of six articles of vertical runs respectively with first to the 6th longitudinal runner connects, a plurality of auxiliary flow is equipped between horizontal run and vertical run, seven horizontal longitudinal runners are equipped with multiple oil grooves.The method have the advantages that integrated level it is high, it is rational in infrastructure it is compact, highly reliable, facilitate casting, working service is convenient, safe, energy saving, long lifespan, applied widely, and casting qualification rate greatly improves, and casting cost reduces.
Description
Technical field
The present invention relates to mechanical equipment manufacturing technology field more particularly to a kind of large-duty loader hydraulic valve casting.
Background technology
Loading machine is that a kind of cubic metre of earth and stone for being widely used in the construction projects such as highway, railway, building, water power, harbour, mine is applied
Work machinery, it is mainly used for the bulk materials such as shovel dress soil, sandstone, lime, coal, also ore, pan soil etc. slightly can be shoveled
Dig operation.Since loading machine has many advantages, such as that operating speed is fast, efficient, mobility is good, operation is light, it becomes engineering
One of main machine of restoration in earth-rock construction in construction.
The overwhelming majority has hydraulic control system in large-duty loader now, and hydraulic system is by hydraulic pump, control valve, liquid
The power of engine is passed to hydraulic pressure by the compositions such as cylinder pressure, hydraulic motor, pipeline, fuel tank, Hydraulic Power Transmission System by hydraulic pump
The executive components such as motor, hydraulic cylinder, push the work forward device action, so as to complete various operations.
Hydraulic valve is hydraulic system key components and parts, and the hydraulic pressure valve arrangement of large-duty loader and required precision are very high, special
It is not the valve of some Multi-oil circuits, quickly, temperature is excessively high, the work for causing hydraulic valve that cannot stablize for temperature rise in the course of work,
And wear extent is big, can reveal valve body under the action of the pressure fluctuation of hydraulic system or impact vibration, and pressure >=35Mpa
It is easier to leak under high-pressure work state, the castings problem such as hydraulic valve casting shrinkage cavity and porosity, internal porosity can be usually product
The defects of, it is desirable that the straightness of higher dense internal organization and main valve hole cast blank is less than 0.8 millimeter.
Invention content
In light of the defects in the prior art, the purpose of the invention is to provide a kind of integrated level it is high, it is rational in infrastructure it is compact, can
By property it is strong, facilitate casting, working service is convenient, safe, energy saving, long lifespan, large-duty loader hydraulic valve applied widely
Casting.
In order to solve the above technical problem, the present invention provides a kind of large-duty loader hydraulic valve casting, including valve body,
Vertical run, horizontal run, auxiliary flow and runner mouth；
It is vertical that the vertical run includes the first vertical run, the second vertical run, the third that array from left to right
Runner, the 4th vertical run, the 5th vertical run and sextuple straight channel, the vertical run be arranged on same plane and mutually
Parallel, the upper and lower surface of the valve body is respectively equipped with six first-class road junctions and six second road junctions, and with six vertical currents
Road corresponds, and the upper end of six vertical runs is connected with first-class road junction, and lower end is connected with second road junction；
The horizontal run is made of seven horizontal longitudinal runners and four horizontal cross runners, described seven horizontal longitudinal directions
Runner and four horizontal cross runners are in approximately the same plane；Horizontal longitudinal runner includes being mutually parallel from left to right arranging successively
The first longitudinal direction runner of row, second longitudinal direction runner, third longitudinal direction runner, the 4th longitudinal runner, the 5th longitudinal runner, the 6th longitudinal direction
Runner and the 7th longitudinal runner；The horizontal cross runner includes the first transverse flow being arranged in order being mutually parallel from front to back
Road, the second transverse flow channels, third transverse flow channels and the 4th transverse flow channels；The first longitudinal direction runner is to the 6th longitudinal runner and four
A transverse flow channels are interconnected；Second transverse flow channels and third transverse flow channels connect respectively with the 7th longitudinal runner, described
First transverse flow channels are connected with the 7th longitudinal runner by oblique runner, and the 4th transverse flow channels do not connect with the 7th longitudinal runner
It is logical；On region on the first longitudinal direction runner to the 6th longitudinal runner between the first transverse flow channels and the second transverse flow channels
The first oil groove, the second oil groove and third oil groove are equipped with, it is horizontal to be located at third on the first longitudinal direction runner to the 6th longitudinal runner
The 4th oil groove, the 5th oil groove and the 6th oil groove are equipped on region between runner and the 4th transverse flow channels；
The first c-type runner is equipped with above runner longitudinally in each, is equipped with the second c-type stream below runner longitudinally in each
Road, the first c-type runner is connected by the first oil groove on runner longitudinally in each and the 6th oil groove with longitudinal runner, described
Second c-type runner is connected by the third oil groove on runner longitudinally in each and the 4th oil groove with longitudinal runner；
First vertical run to sextuple straight channel respectively with first longitudinal direction runner to the midpoint of the 6th longitudinal runner
It corresponds and is interconnected；
Each vertical run is connected respectively with the first c-type runner and the second c-type runner；
It is equipped with and is mutually parallel and horizontal the first auxiliary flow and the second auxiliary flow between six vertical runs, and be located at
The top of the first c-type runner, first auxiliary flow and the second auxiliary flow are in latticed phase with six vertical runs
It is intercommunicated；
The sextuple straight channel and the connectivity part of the second auxiliary flow are equipped with third c-type runner, positioned at the 6th longitudinal direction stream
The top of the second c-type runner above road, and connected with the first transverse flow channels and the 4th transverse flow channels；
The front and rear surfaces of the valve body are respectively equipped with seven third flow channel mouths and seven the 4th runner mouths, and with seven longitudinal directions
Runner corresponds, and the front end of longitudinal runner is connected with the third flow channel mouth, and the 4th runner mouth of rear end is connected, the valve
It is set in the left-hand face of body there are four the 5th runner mouth, the left-hand end of four articles of transverse flow channels is corresponded with four the 5th runner mouths
Be connected, the lower surface of the valve body is equipped with the 6th runner mouth, the centre of the described 7th longitudinal runner be provided with downwards runner and
It is connected with the 6th runner mouth, the lower surface of the valve body is additionally provided with six the 7th runner mouths and six the 8th runner mouths, each
Second oil groove of longitudinal runner is connected to runner is had with the 7th runner mouth, and the 5th oil groove of runner is to dividing into longitudinally in each
There is runner to be connected with the 8th runner mouth.
Further, six vertical runs are equipped with annular oil groove with six longitudinal runner connectivity parts.
Further, the diameter of the described 7th longitudinal runner runner from front to back differs, and first transverse flow channels are
It is connected with the 7th longitudinal flow diameter maximum.
Specifically, the cross section of first auxiliary flow is less than the cross section of the second auxiliary flow.
Specifically, the valve body passes through casting integrated molding.
The large-duty loader hydraulic valve casting of the present invention, has the advantages that：Integrated level is high, rational in infrastructure tight
It gathers, is highly reliable, facilitating casting, working service is convenient, safe, energy saving, long lifespan, applied widely, and casting qualification rate is significantly
It improves, casting cost reduces, and is the developing direction of domestic large-duty loader hydraulic system from now on, and development trend is good.
Description of the drawings
It, below will be to required in embodiment or description of the prior art in order to illustrate more clearly of technical scheme of the present invention
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, right
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Its attached drawing.
Fig. 1 is the vertical view of the present invention；
Fig. 2 is the front view of the present invention；
Fig. 3 is A-A sectional views of the present invention：
Fig. 4 is J-J sectional views of the present invention；
Fig. 5 is H-H sectional views of the present invention；
Fig. 6 is I-I sectional views of the present invention；
Fig. 7 is N-N sectional views of the present invention；
Fig. 8 is C-C sectional views of the present invention.
Wherein, reference numeral corresponds in figure：1- valve bodies, the first vertical runs of 2-, the second vertical runs of 3-, 4- thirds are hung down
Straight channel, the 4th vertical runs of 5-, the 5th vertical runs of 6-, 7- sextuple straight channels, the first-class road junctions of 8-, 9- second flow channels
Mouth, 10- first longitudinal direction runners, 11- second longitudinal direction runners, 12- thirds longitudinal direction runner, the longitudinal runners of 13- the 4th, 14- the 5th are vertical
To runner, the longitudinal runners of 15- the 6th, the longitudinal runners of 16- the 7th, the first transverse flow channels of 17-, the second transverse flow channels of 18-, 19- the
Three transverse flow channels, the 4th transverse flow channels of 20-, 21- oblique runners, the first oil grooves of 22-, the second oil grooves of 23-, 24- third oil grooves,
The 4th oil grooves of 25-, the 5th oil grooves of 26-, the 6th oil grooves of 27-, 28- the first c-type runners, 29- the second c-type runners, 30- first are assisted
Runner, the second auxiliary flows of 31-, 32- third c-type runners, 33- third flow channel mouths, the 4th runner mouths of 34-, the 5th runners of 35-
Mouthful, the 6th runner mouths of 36-, the 7th runner mouths of 37-, the 8th runner mouths of 38-, 39- annular oil grooves.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in inventive embodiments is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, shall fall within the protection scope of the present invention.
Embodiment：
- Fig. 8 is please referred to Fig.1, the present invention provides a kind of large-duty loader hydraulic valve casting, including valve body 1, vertical current
Road, horizontal run, auxiliary flow and runner mouth；
The first vertical run 2, the second vertical run 3, the third that the vertical run includes arraying from left to right are hung down
Straight channel 4, the 4th vertical run 5, the 5th vertical run 6 and sextuple straight channel 7, the vertical run are arranged on same plane
And be mutually parallel, the upper and lower surface of the valve body 1 is respectively equipped with six first-class road junctions 8 and six second road junctions 9, and with six
Vertical run corresponds, and the upper end of six vertical runs is connected with first-class road junction 8, lower end and second road junction
9 are connected；
The horizontal run is made of seven horizontal longitudinal runners and four horizontal cross runners, described seven horizontal longitudinal directions
Runner and four horizontal cross runners are in approximately the same plane；Horizontal longitudinal runner includes being mutually parallel from left to right arranging successively
The longitudinal runner of the longitudinal runner the 13, the 5th of first longitudinal direction runner 10, second longitudinal direction runner 11, third longitudinal direction runner the 12, the 4th of row
14th, the 6th longitudinal longitudinal runner 16 of runner 15 and the 7th；The horizontal cross runner includes being mutually parallel from front to back successively
The first transverse flow channels 17, the second transverse flow channels 18,19 and the 4th transverse flow channels 20 of third transverse flow channels of arrangement；Described first is vertical
It is interconnected to runner to the 6th longitudinal runner with four transverse flow channels；Second transverse flow channels 18 and third transverse flow channels 19
It is connected respectively with the 7th longitudinal runner 16, first transverse flow channels 17 are connected with the 7th longitudinal runner 16 by oblique runner 21
Logical, the 4th transverse flow channels 20 are not connected with the 7th longitudinal runner 16；The longitudinal runner of first longitudinal direction runner 10 to the 6th
The first oil groove 22, the second oil groove 23 are equipped on region on 15 between the first transverse flow channels 17 and the second transverse flow channels 18
With third oil groove 24, it is located at third transverse flow channels 19 and the 4th laterally on the longitudinal runner 15 of the first longitudinal direction runner 10 to the 6th
The 4th oil groove 25, the 5th oil groove 26 and the 6th oil groove 27 are equipped on region between runner 20；
The first c-type runner 28 is equipped with above runner longitudinally in each, is equipped with second c-type below runner longitudinally in each
Runner 29, the first c-type runner 28 pass through the first oil groove 22 on runner longitudinally in each and the 6th oil groove 27 and longitudinal runner
It is connected, the second c-type runner 29 passes through 24 and the 4th oil groove 25 of third oil groove on runner longitudinally in each and longitudinal runner
It is connected；
First vertical run 2 to sextuple straight channel 7 respectively with the longitudinal runner 15 of first longitudinal direction runner 10 to the 6th
Midpoint correspond be interconnected；
Each vertical run is connected respectively with the first c-type runner 28 and the second c-type runner 29；
It is equipped with and is mutually parallel and horizontal the first auxiliary flow 30 and the second auxiliary flow 31 between six vertical runs, and
Positioned at the top of the first c-type runner 28,30 and second auxiliary flow 31 of the first auxiliary flow and six vertical runs
It is interconnected in latticed；
The connectivity part of 7 and second auxiliary flow 31 of sextuple straight channel is equipped with third c-type runner 32, vertical positioned at the 6th
To the top of the second c-type runner 29 of 15 top of runner, and connected with the first transverse flow channels 17 and the 4th transverse flow channels 20；
The front and rear surfaces of the valve body 1 are respectively equipped with seven third flow channel mouths 33 and seven the 4th runner mouths 34, and with seven
Item longitudinal direction runner corresponds, and the front end of longitudinal runner is connected with the third flow channel mouth 33,34 phase of the 4th runner mouth of rear end
Connection is set in the left-hand face of the valve body 1 there are four the 5th runner mouth 35, the left-hand end of four articles of transverse flow channels with four the 5th
The one-to-one correspondence of runner mouth 35 is connected, and the lower surface of the valve body 1 is equipped with the 6th runner mouth 36, the described 7th longitudinal runner 16
Centre is provided with runner and is connected with the 6th runner mouth 36 downwards, and the lower surface of the valve body 1 is additionally provided with six the 7th runners
Mouthfuls 37 and six the 8th runner mouths 38, longitudinally in each the second oil groove 23 of runner be connected to runner is had with the 7th runner mouth 37
Logical, the 5th oil groove 26 of runner is connected to runner is had with the 8th runner mouth 38 longitudinally in each.
Further, six vertical runs are equipped with annular oil groove 39 with six longitudinal runner connectivity parts.
Further, the diameter of the described 7th longitudinal runner 16 runner from front to back differs, first transverse flow channels
17 are connected with the 7th longitudinal 16 diameter maximum of runner.
Specifically, the cross section of first auxiliary flow 30 is less than the cross section of the second auxiliary flow 31.
Specifically, the valve body 1 passes through casting integrated molding.
This large-duty loader hydraulic valve casting important technological parameters：
(1) material：QT500-7
(2) tensile strength：≥500Mpa
(3) yield strength：≥320Mpa
(4) hardness：HB180—230
(5) nodulizing grade：1-3 grades
(6) metallographic structure should meet GB/T 9441-2009 evaluations
(7) graphite size rank：6-8 grades
(8) without casting flaws such as sand hole, stomata, shrinkage cavity and porosities, the defects of inner cavity is without scab, fash
(9) main valve hole straightness is less than 0.8mm
(10) casting list amount：44.8kg
The large-duty loader hydraulic valve casting of the present invention, has the advantages that：Integrated level is high, rational in infrastructure tight
It gathers, is highly reliable, facilitating casting, working service is convenient, safe, energy saving, long lifespan, applied widely, and casting qualification rate is significantly
It improves, casting cost reduces, and is the developing direction of domestic large-duty loader hydraulic system from now on, and development trend is good.
Above disclosed is only several preferred embodiments of the present invention, cannot limit the power of the present invention with this certainly
Sharp range, therefore equivalent variations made according to the claims of the present invention, are still within the scope of the present invention.
Claims (5)
1. a kind of large-duty loader hydraulic valve casting, which is characterized in that including valve body (1), vertical run, horizontal run, auxiliary
Help runner and runner mouth；
The first vertical run (2), the second vertical run (3), the third that the vertical run includes arraying from left to right are hung down
Straight channel (4), the 4th vertical run (5), the 5th vertical run (6) and sextuple straight channel (7), the vertical run are arranged on
It same plane and is mutually parallel, the upper and lower surface of the valve body (1) is respectively equipped with six first-class road junctions (8) and six seconds
Road junction (9), and corresponded with six vertical runs, the upper end of six vertical runs is connected with first-class road junction (8),
Lower end is connected with second road junction (9)；
The horizontal run is made of seven horizontal longitudinal runners and four horizontal cross runners, described seven horizontal longitudinal runners
With four horizontal cross runners in approximately the same plane；Horizontal longitudinal runner includes being mutually parallel what is be arranged in order from left to right
First longitudinal direction runner (10), second longitudinal direction runner (11), third longitudinal direction runner (12), the 4th longitudinal runner (13), the 5th longitudinal direction
Runner (14), the 6th longitudinal runner (15) and the 7th longitudinal runner (16)；The horizontal cross runner is included from front to back mutually
Parallel the first transverse flow channels (17) being arranged in order, the second transverse flow channels (18), third transverse flow channels (19) and the 4th transverse direction
Runner (20)；The first longitudinal direction runner to the 6th longitudinal runner is interconnected with four transverse flow channels；Second transverse flow
Road (18) and third transverse flow channels (19) connect respectively with the 7th longitudinal runner (16), first transverse flow channels (17) and the 7th
Longitudinal runner (16) is connected by oblique runner (21), and the 4th transverse flow channels (20) do not connect with the 7th longitudinal runner (16)
It is logical；It is located at the first transverse flow channels (17) and the second transverse flow channels on the first longitudinal direction runner (10) to the 6th longitudinal runner (15)
(18) the first oil groove (22), the second oil groove (23) and third oil groove (24), the first longitudinal direction stream are equipped on the region between
On region on road (10) to the 6th longitudinal runner (15) between third transverse flow channels (19) and the 4th transverse flow channels (20)
It is equipped with the 4th oil groove (25), the 5th oil groove (26) and the 6th oil groove (27)；
The first c-type runner (28) is equipped with above runner longitudinally in each, is equipped with the second c-type runner below runner longitudinally in each
(29), the first c-type runner (28) passes through the first oil groove (22) on runner longitudinally in each and the 6th oil groove (27) and longitudinal direction
Runner is connected, and the second c-type runner (29) passes through the third oil groove (24) and the 4th oil groove (25) on runner longitudinally in each
It is connected with longitudinal runner；
First vertical run (2) to sextuple straight channel (7) respectively with first longitudinal direction runner (10) to the 6th longitudinal runner
(15) midpoint, which corresponds, to be interconnected；
Each vertical run is connected respectively with the first c-type runner (28) and the second c-type runner (29)；
It is equipped with and is mutually parallel and horizontal the first auxiliary flow (30) and the second auxiliary flow (31) between six vertical runs, and
Positioned at the top of the first c-type runner (28), first auxiliary flow (30) and the second auxiliary flow (31) hang down with six
Straight channel is interconnected in latticed；
The sextuple straight channel (7) and the connectivity part of the second auxiliary flow (31) are equipped with third c-type runner (32), positioned at the 6th
The top of the second c-type runner (29) above longitudinal runner (15), and with the first transverse flow channels (17) and the 4th transverse flow channels
(20) it connects；
The front and rear surfaces of the valve body (1) are respectively equipped with seven third flow channel mouths (33) and seven the 4th runner mouths (34), and with
Seven longitudinal runners correspond, and the front end of longitudinal runner is connected with the third flow channel mouth (33), the 4th runner mouth of rear end
(34) it is connected, is set in the left-hand face of the valve body (1) there are four the 5th runner mouth (35), the left-hand end of four transverse flow channels
It is connected with four the 5th runner mouth (35) one-to-one correspondence, the lower surface of the valve body (1) is equipped with the 6th runner mouth (36), described
The centre of 7th longitudinal runner (16) is provided with downwards runner and is connected with the 6th runner mouth (36), under the valve body (1)
Surface is additionally provided with six the 7th runner mouths (37) and six the 8th runner mouths (38), longitudinally in each the second oil groove (23) of runner to
It has runner with the 7th runner mouth (37) to be connected, the 5th oil groove (26) of runner is to having runner and the 8th longitudinally in each
Runner mouth (38) is connected.
2. large-duty loader hydraulic valve casting according to claim 1, which is characterized in that six vertical runs with
Six longitudinal runner connectivity parts are equipped with annular oil groove (39).
3. large-duty loader hydraulic valve casting according to claim 1, which is characterized in that the described 7th longitudinal runner
(16) diameter of runner differs from front to back, and first transverse flow channels (17) are maximum with the 7th longitudinal runner (16) diameter
Place's connection.
4. large-duty loader hydraulic valve casting according to claim 1, which is characterized in that first auxiliary flow
(30) cross section is less than the cross section of the second auxiliary flow (31).
5. large-duty loader hydraulic valve casting according to claim 1, which is characterized in that the valve body (1) passes through casting
Make integrated molding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257666.4A CN105782500B (en) | 2016-04-22 | 2016-04-22 | A kind of large-duty loader hydraulic valve casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610257666.4A CN105782500B (en) | 2016-04-22 | 2016-04-22 | A kind of large-duty loader hydraulic valve casting |
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| CN105782500B true CN105782500B (en) | 2018-06-08 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018039854A1 (en) * | 2016-08-29 | 2018-03-08 | 丁洋 | Casting mould for hydraulic valve body used in large loader and manufacturing method therefor |
| WO2018058510A1 (en) * | 2016-09-30 | 2018-04-05 | 丁先华 | Cast piece for hydraulic valve body of heavy-duty loader |
| CN107084127A (en) * | 2017-06-12 | 2017-08-22 | 南通华东油压科技有限公司 | A kind of loading machine pumping valve body and its casting method |
| CN107013723B (en) * | 2017-06-12 | 2023-05-16 | 南通华东油压科技有限公司 | Hydraulic valve body casting of excavator |
| CN107035679A (en) * | 2017-06-12 | 2017-08-11 | 南通华东油压科技有限公司 | A kind of Vehicle loaded pump valve body moulding |
| CN108405803B (en) * | 2018-05-04 | 2023-05-12 | 南通华东油压科技有限公司 | Valve body and processing technology thereof |
| CN108730587A (en) * | 2018-06-19 | 2018-11-02 | 如皋岩达机械工业有限公司 | A kind of quadruple valve valve body moulding and its mold |
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| CN203214915U (en) * | 2013-04-23 | 2013-09-25 | 温州市开诚机械有限公司 | Steel casting of gas turbine |
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| US6170508B1 (en) * | 1998-07-07 | 2001-01-09 | Luk Getriebe-Systeme Gmbh | Fluid flow regulating valve and method |
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| CN105782500A (en) | 2016-07-20 |
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