CN204476910U - For valve assembly and the corresponding machine of the hydraulic system of machine - Google Patents
For valve assembly and the corresponding machine of the hydraulic system of machine Download PDFInfo
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- CN204476910U CN204476910U CN201520139237.8U CN201520139237U CN204476910U CN 204476910 U CN204476910 U CN 204476910U CN 201520139237 U CN201520139237 U CN 201520139237U CN 204476910 U CN204476910 U CN 204476910U
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- valve
- hydraulic fluid
- spool
- fluid port
- way valve
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Abstract
The utility model relates to a kind of valve assembly of the hydraulic system for machine, this valve assembly comprises hydraulic fluid port one-way valve (10), it is characterized in that, this valve assembly also comprises the main relief valve (20) be connected with described hydraulic fluid port one-way valve, be formed with passage (12) in the spool (11) of this hydraulic fluid port one-way valve, this passage makes described hydraulic fluid port one-way valve (10) be communicated with described main relief valve (20) fluid.This valve assembly has low cost of manufacture, the easy for installation and advantage occupied little space.The utility model also relates to the machine with this valve assembly, especially wheel loader.
Description
Technical field
The utility model relates to the machine of such as engineering machinery.More specifically, the utility model relates to the valve be used in the hydraulic system of machine.
Background technique
The heavy-duty machines such as engineering machinery often have large work tool, and have the hydraulic system for operating this work tool.Valve, especially safety check is generally provided with, to guarantee the normal execution of operation and to avoid owing to surprisingly may cause damage to hydraulic system or work tool etc. in such hydraulic system.Such as, wheel loader known at present comprises scraper bowl and the oil hydraulic circuit for operating scraper bowl, and in this oil hydraulic circuit, be provided with multiple different valve, these valves cooperatively interact and work.
There is many problems in the hydraulic system in machine known at present.On the one hand, some valves in hydraulic system need to arrange with being such as in alignment with each other with certain position relationship, and this causes each installation all will expend a lot of time.On the other hand, the parts in this hydraulic system are more, so both there is the problem that component costs is high, there is again the problem occupying more space compared with multi-part.
Model utility content
The utility model is intended to solve above-mentioned the problems of the prior art, and proposes a kind of integrated form valve assembly that can be used in the hydraulic system of machine.
On the one hand, the utility model provides a kind of valve assembly be used in the hydraulic system of machine, this valve assembly comprises hydraulic fluid port one-way valve, wherein, this valve assembly also comprises the main relief valve be connected with this hydraulic fluid port one-way valve, be formed with passage in the spool of this hydraulic fluid port one-way valve, this passage makes described hydraulic fluid port one-way valve be communicated with described main relief valve fluid.
Hydraulic fluid port one-way valve and main relief valve integrate by valve assembly of the present utility model, thus define compact assembly, and both the spool of hydraulic fluid port one-way valve and main relief valve need not be made all arduously to align when each installation valve, also for hydraulic fluid port one-way valve and main relief valve, fluid flowing path need not be set respectively.Such valve assembly has low cost of manufacture, occupies little space and advantage easy for installation.
Valve assembly of the present utility model also has technical characteristics favourable as follows:
-this hydraulic fluid port one-way valve and this main relief valve are connected by sleeve with being in alignment with each other, and wherein, this sleeve surrounds the end sections comprising described passage of the spool of this hydraulic fluid port one-way valve in a sealing manner and surrounds the entrance end portion of spool of this main relief valve;
The entrance end portion of spool of-this hydraulic fluid port one-way valve and the point of contact of valve seat be greater than this spool apart from the distance of the central axis of this spool with the part of barrel contacts apart from the distance of described central axis, be greater than the useful area of the end sections surrounded by sleeve of this spool with the useful area of the entry end making this spool; And
The entrance end portion of-described spool is contacted with each other by the respective ramp on the inclined-plane of cutting sth. askew and valve seat.
On the other hand, the utility model also relates to a kind of machine, and this machine comprises the work tool by hydraulic system operation, and wherein, this hydraulic system comprises valve assembly as above.
Preferably, described machine is wheel loader, and described work tool is scraper bowl.
Accompanying drawing explanation
Describe preferred embodiment of the present utility model with reference to the accompanying drawings in detail, in the accompanying drawings:
Fig. 1 is the view of the example machine that can use valve assembly of the present utility model;
Fig. 2 illustrates the sectional view of the valve assembly according to the utility model preferred embodiment;
Fig. 3 and Fig. 4 is the partial enlarged drawing of the valve assembly of Fig. 2, and the useful area at the spool two ends of hydraulic fluid port one-way valve is wherein shown respectively.
Embodiment
Fig. 1 illustrates the example machine 100 that can use valve assembly of the present utility model.This machine 100 can be vehicle, especially engineering machinery, such as wheel loader.This machine 100 can comprise operator and stand 110, and to be stood 110 work tools carrying out handling, especially scraper bowl 120 operator by operator.Although shown in Fig. 1 is wheel loader, this machine 100 also can be the machine of task performing mining industry, building, agricultural, transport, generating or other industry any well known in the prior art, especially mobile machine.
Fig. 2 illustrates the sectional view of the valve assembly of the hydraulic system for machine of the present utility model.This valve assembly is specially hydraulic fluid port check valve assembly, and comprises hydraulic fluid port one-way valve 10 and main relief valve 20.This hydraulic fluid port one-way valve 10 is arranged to receive by the hydraulic fluid of oil pump from the pressurization of hydraulic oil container (not shown) pumping in oil hydraulic circuit, and the hydraulic fluid of this pressurization is transferred to power unit, as shown in the arrow F of the flow direction of expression hydraulic fluid.This main relief valve 20 is arranged to the hydraulic fluid receiving pressurization in oil hydraulic circuit, and when the pressure of this hydraulic fluid exceedes predetermined threshold value conducting to make hydraulic fluid hydraulic return fuel tank also thus to discharge the excess pressure of this hydraulic fluid.
According to the utility model, hydraulic fluid port one-way valve 10 is connected with main relief valve 20, to form an integrated form valve assembly, wherein, this hydraulic fluid port one-way valve 10 and this main relief valve 20 receive the hydraulic fluid of the pressurization from hydraulic oil container simultaneously.For this reason, hydraulic fluid port one-way valve 10 and main relief valve 20 are arranged to fluid communication with each other.
As shown in Figure 2, main relief valve 20 is arranged in the downstream of hydraulic fluid port one-way valve 10 on the flow direction F of hydraulic fluid, and in the spool 11 of this hydraulic fluid port one-way valve 10, be formed with passage 12, especially vertically (left and right directions namely in Fig. 2) runs through the centre gangway 12 of spool 11, this centre gangway 12 makes main relief valve 20 fluid of this hydraulic fluid port one-way valve 10 and this be communicated with, to allow hydraulic fluid to flow to main relief valve 20 via this passage 12 from hydraulic fluid port one-way valve 10.
Still see Fig. 2, according to preferred embodiment of the present utility model, described hydraulic fluid port one-way valve 10 and described main relief valve 20 are connected by sleeve 30.This sleeve 30 at one end surrounds the axial end portions comprising the outlet of passage 12 of a part, i.e. this spool 11 of the spool 11 of hydraulic fluid port one-way valve 10 hermetically, and the entrance end portion of the spool 21 of main relief valve 20 is surrounded hermetically at the relative the other end, to make described hydraulic fluid port one-way valve 10 be in alignment with each other with described main relief valve 20, the outlet of the passage 12 of hydraulic fluid port one-way valve 10 is especially made to align vertically with the entrance of main relief valve 20.
Referring now to Fig. 3 and Fig. 4, wherein exemplify the hydraulic fluid port one-way valve 10 of Fig. 2 with the ratio amplified.As shown in FIG., size being surrounded by sleeve 30 and radially increasing with the size of the end sections (left part namely in Fig. 3 and Fig. 4) faced by main relief valve 20 relative to the other parts of this spool 11, especially this spool 11 of the entrance end portion (right part namely in Fig. 3 and Fig. 4) of the spool 11 of hydraulic fluid port one-way valve 10.
Like this, the entrance end portion of this spool 11 and the point of contact of the valve seat 15 to be formed by valve body or contacting part 41 apart from the distance of the central axis 13 of this spool 11 be greater than this spool 11 in the face of the end sections of main relief valve 20 and the point of contact of sleeve 30 or contacting part 42 are apart from the distance of the central axis 13 of this spool 11.Thus, the useful area A (see Fig. 3) of the entry end of the spool 11 of hydraulic fluid port one-way valve 10 be greater than the end sections surrounded by sleeve 30 of this this spool 11 that is this spool 11 with the useful area B (see Fig. 4) of the end sections faced by main relief valve 20, when receiving the hydraulic fluid of pressurization with this hydraulic fluid port one-way valve 10 of box lunch, this spool 11 can move in the effect of hydraulic pressure difference direction from right to left in Fig. 3 and Fig. 4, normally allows hydraulic fluid to flow through this hydraulic fluid port one-way valve 10 along its flow direction F (see Fig. 2) thus.
As found out from Fig. 3 and Fig. 4, the entrance end portion of the spool 11 of hydraulic fluid port one-way valve 10 is contacted with the respective ramp on valve seat 15 by inclined-plane 16 and forms contacting part 41.The inclined-plane 16 of this spool 11 is formed by the entrance end portion of described spool 11 of cutting sth. askew in the face of the flow direction of hydraulic fluid, and has the slope declined towards the direction contrary with the flow direction of hydraulic fluid.Correspondingly, the inclined-plane on this valve seat 15 is also formed by the scarf declined towards the direction contrary with the flow direction of hydraulic fluid, to engage with the inclined-plane 16 forming surfaces-face of spool 11.
Industrial usability
Valve assembly of the present utility model is integrated with the dual functions of one-way valve and relief valve, and can be set directly in the oil hydraulic circuit of machine as parts, and hydraulic fluid port one-way valve need not be respectively and main relief valve arranges hydraulic fluid flow path and makes hydraulic fluid port one-way valve align with main relief valve arduously as the traditional design that wherein hydraulic fluid port one-way valve and main relief valve separate, because herein is provided installation efficiency, save installing space, and decrease the quantity of parts.
Advantageously; due to the design on the inclined-plane 16 of the design of hydraulic fluid port one-way valve 10, the especially entrance end portion of its spool 11; when stopping the hydraulic fluid to oil cylinder supplied with pressurized; can prevent from causing hydraulic fluid reverse flow due to job load that is flowing along the arrow F ' in Fig. 4, protect hydraulic system and the work tool be attached thereto, such as scraper bowl from infringement thus.
Claims (6)
1. for the valve assembly of the hydraulic system of machine, comprise hydraulic fluid port one-way valve (10), it is characterized in that, this valve assembly also comprises the main relief valve (20) be connected with described hydraulic fluid port one-way valve, be formed with passage (12) in the spool (11) of this hydraulic fluid port one-way valve, this passage (12) makes described hydraulic fluid port one-way valve (10) be communicated with described main relief valve (20) fluid.
2. valve assembly according to claim 1, it is characterized in that, this hydraulic fluid port one-way valve (10) and this main relief valve (20) are connected by sleeve (30) with being in alignment with each other, wherein, the entrance end portion of the end sections comprising described passage surrounding the spool (11) of this hydraulic fluid port one-way valve and the spool (21) surrounding this main relief valve this sleeve seal.
3. valve assembly according to claim 2, it is characterized in that, the entrance end portion of the spool (11) of this hydraulic fluid port one-way valve (10) and the point of contact of valve seat (15) are greater than the part contacted with sleeve (30) of this spool (11) apart from the distance of described central axis (13) apart from the distance of the central axis (13) of this spool, are greater than the useful area of the end sections surrounded by sleeve of this spool with the useful area of the entry end making this spool (11).
4. valve assembly according to claim 3, is characterized in that, the entrance end portion of described spool (11) is contacted with each other with the respective ramp on described valve seat (15) by the inclined-plane (16) of cutting sth. askew.
5. a machine, comprises the work tool by hydraulic system operation, it is characterized in that, this hydraulic system comprises according to the valve assembly one of claim 1-4 Suo Shu.
6. machine according to claim 5, is characterized in that, this machine is wheel loader, and this work tool is scraper bowl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520139237.8U CN204476910U (en) | 2015-03-12 | 2015-03-12 | For valve assembly and the corresponding machine of the hydraulic system of machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520139237.8U CN204476910U (en) | 2015-03-12 | 2015-03-12 | For valve assembly and the corresponding machine of the hydraulic system of machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476910U true CN204476910U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520139237.8U Active CN204476910U (en) | 2015-03-12 | 2015-03-12 | For valve assembly and the corresponding machine of the hydraulic system of machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204476910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456133A (en) * | 2019-01-21 | 2020-07-28 | 利勃海尔-韦尔克嫩青有限公司 | Slurry wall cutter |
-
2015
- 2015-03-12 CN CN201520139237.8U patent/CN204476910U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456133A (en) * | 2019-01-21 | 2020-07-28 | 利勃海尔-韦尔克嫩青有限公司 | Slurry wall cutter |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |