CN103912533A - Spool unit for proportional reversing valve - Google Patents
Spool unit for proportional reversing valve Download PDFInfo
- Publication number
- CN103912533A CN103912533A CN201410130109.7A CN201410130109A CN103912533A CN 103912533 A CN103912533 A CN 103912533A CN 201410130109 A CN201410130109 A CN 201410130109A CN 103912533 A CN103912533 A CN 103912533A
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- CN
- China
- Prior art keywords
- spring
- pull bar
- spring seat
- spool
- reversing valve
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- 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.)
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Abstract
The invention relates to a spool unit for a proportional reversing valve. The spool unit comprises a spring pull bar, two equal pads, two spring holders the same in structure, a centering spring, and a spool. One end of the spring pull bar is provided with a screw thread; the other end of the spring pull bar is an internal hexagonal cylindrical end provided with an internal hexagon counter bore. The center of each pad is provided with a through hole; one end of each pad is a plane; the other end of each pad is a spherical surface. The center of each spring holder is provided with a through hole; the outside diameter of one end of each spring holder is large; the outside diameter of the other end of each spring holder is small; the large-diameter outside end of each spring holder is provided with a conical hole. The centering spring is mounted between the spring holders the same in structure. The pads are mounted at the outer ends of the spring holders and match with the conical holes of the spring holders; one end of a spool is provided with a threaded hole; the threaded end of the spring pull bar is fitly tightened to the screw thread of the spool; the pads, the spring holders and the centering spring are fixed; the spacing of the spring holders meets the requirement for specified size. Compared with the like structured products, the spool unit is simple in structure, convenient to mount, high in size control precision, good in repeatability, stable in performance and applicable to batch production.
Description
Technical field
The invention belongs to selector valve field, particularly relate to a kind of proportional reversing valve mangetic core assembly.
Background technique
The occasion of proportional reversing valve application is more and more extensive.But the research of proportional reversing valve and manufacturing also in a relatively backward state at home cannot realize batch production, simultaneously also there is unsettled problem in product performance.
In the spare part of guide's proportional reversing valve, mangetic core assembly is the assembly of comparison core.The directly performance of the whole guide proportion selector valve of impact of its structural behaviour quality.
One of mangetic core assembly structure generally adopting at present respectively adds a spring for spool two ends, this simple in structure but have drawback, because while guaranteeing that spool moves respectively to from left to right, the move distance error control of both direction within limits, the conformity of just necessary strict control spring rigidity, the deviation of rigidity, free height etc. between the spring of at least installing at spool two ends must be controlled in less scope, the spring pre compressed magnitude at spool two ends also will be controlled simultaneously, otherwise the stroke of spool side-to-side movement cannot guarantee symmetry.And pre compressed magnitude after control spring rigidity, free height and spring fitting is all more difficult, can reach by this way good control requirement cost be very high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of proportional reversing valve mangetic core assembly, can solve the unreliable products performance and the poor problem of conformity that cause due to spring and spring fitting etc. at present.
The technical solution adopted for the present invention to solve the technical problems is: a kind of proportional reversing valve mangetic core assembly is provided, comprise spring pull bar, spring pull bar is that one end has screw thread, the other end is hexagonal cylindrical end in counterbore, on described spring pull bar, cover has the first cushion block, the first spring seat, the second spring seat and the second cushion block successively, and the threaded end of spring pull bar and spool screw-thread fit are tightened, between the first spring seat and the second spring seat, cover has centralizing spring; The first cushion block and the second cushion block structure positioned opposite on spring pull bar that coexists mutually, and one end of its intermediate throughholes is planar ends, the other end is sphere end; The first spring seat and the second spring seat structure positioned opposite on spring pull bar that coexists mutually, and through hole one end in the middle of it be large outer nose circle, the little outer nose circle of the other end, and outside greatly, nose circle has a conical bore.
The mode that the threaded end of employing spring pull bar and spool screw-thread fit are tightened can be fixed cushion block, spring seat and centralizing spring and make spring seat spacing reach the size requirement of regulation.Such mangetic core assembly is simple in structure, easy for installation, can reach higher installation dimension precision, when the installation form of a centralizing spring has been avoided in the past the each spring in spool two ends, cause the asymmetric problem of spool side-to-side movement because spring rate is inconsistent.This structure can meet processing in enormous quantities.
The sphere end of the first described cushion block coordinates installation with the conical bore of the large outer nose circle of the first spring seat.
The sphere end of the second described cushion block coordinates installation with the conical bore of the large outer nose circle of the second spring seat.
Adopt the sphere end of cushion block to cause spring pull bar and the stressed generation deformation of spring seat with the lateral force that spring seat produces when the conical bore of outer nose circle coordinates the mode of installing can avoid centralizing spring compression greatly, and then affecting valve core movement, this structure has advantages of reproducible, stable performance.
Between the first described spring seat and the second spring seat, pass through large outer nose circle location and installation centralizing spring separately.
Beneficial effect
The present invention has simple for structure, easy for installation compared with other infrastructure products of the same type, control size precision is higher, reproducible, and stable performance can meet production in enormous quantities.
Accompanying drawing explanation
Fig. 1 is spring pull bar outline drawing one of the present invention.
Fig. 2 is spring pull bar outline drawing two of the present invention.
Fig. 3 is cushion block sectional view of the present invention.
Fig. 4 is spring seat sectional view of the present invention.
Fig. 5 is spool outline drawing of the present invention.
Fig. 6 is the sectional view of proportional reversing valve mangetic core assembly of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's instruction, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
As shown in Fig. 1～Fig. 6, a kind of proportional reversing valve mangetic core assembly, comprises spring pull bar 1, two identical cushion blocks 2, two spring seats that structure is identical 3, centralizing spring 4 and spools 5.Described spring pull bar 1 is for there is screw thread one end, and the other end is interior hexagonal cylindrical end, and interior hexagonal is counterbore; It is plane that there are through hole, one end in described cushion block 2 its centres, and the other end is sphere; There is a through hole described spring seat 3 its centres, and one end outside diameter is large, and one end outside diameter is little, outside large, nose circle has a conical bore, centralizing spring 4 is installed between the spring seat 3 that these two structures are identical, and two identical cushion blocks 2 are installed on spring seat 3 outer ends, match with its conical bore; There is tapped hole described spool 5 one end, and the threaded end of spring pull bar 1 and spool 5 screw-thread fit are tightened, and cushion block 2, spring seat 3 and centralizing spring 4 are fixed and made spring seat 3 spacing reach the size requirement of regulation.
Claims (4)
1. a proportional reversing valve mangetic core assembly, comprise spring pull bar (1), spring pull bar (1) has screw thread for one end, the other end is hexagonal cylindrical end in counterbore, it is characterized in that: on described spring pull bar (1), cover has the first cushion block (2), the first spring seat (3), the second spring seat (6) and the second cushion block (7) successively, and the threaded end of spring pull bar (1) and spool (5) screw-thread fit are tightened, between the first spring seat (3) and the second spring seat (6), cover has centralizing spring (4); The first cushion block (2) and the second cushion block (7) structure upper positioned opposite of spring pull bar (1) that coexists mutually, and one end of its intermediate throughholes is planar ends, the other end is sphere end; The first spring seat (3) and the second spring seat (6) structure upper positioned opposite of spring pull bar (1) that coexists mutually, and through hole one end in the middle of it be large outer nose circle, the little outer nose circle of the other end, and outside greatly, nose circle has a conical bore.
2. proportional reversing valve mangetic core assembly as claimed in claim 1, is characterized in that: the sphere end of described the first cushion block (2) coordinates installation with the conical bore of the large outer nose circle of the first spring seat (3).
3. proportional reversing valve mangetic core assembly as claimed in claim 1, is characterized in that: the sphere end of described the second cushion block (7) coordinates installation with the conical bore of the large outer nose circle of the second spring seat (6).
4. proportional reversing valve mangetic core assembly as claimed in claim 1, is characterized in that: between described the first spring seat (3) and the second spring seat (6), pass through large outer nose circle location and installation centralizing spring (4) separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410130109.7A CN103912533A (en) | 2014-04-01 | 2014-04-01 | Spool unit for proportional reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410130109.7A CN103912533A (en) | 2014-04-01 | 2014-04-01 | Spool unit for proportional reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103912533A true CN103912533A (en) | 2014-07-09 |
Family
ID=51038458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410130109.7A Pending CN103912533A (en) | 2014-04-01 | 2014-04-01 | Spool unit for proportional reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103912533A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641236A (en) * | 2017-01-22 | 2017-05-10 | 山东科技大学 | AMT hydraulic gear shifting execution system having mechanical positioning and centering functions |
| CN106641235A (en) * | 2017-01-22 | 2017-05-10 | 山东海卓电液控制工程技术研究院 | AMT (Automated Mechanical Transmission) hydraulic gear-shifting executing system with pressure limiting and positioning function |
| CN106641224A (en) * | 2017-01-22 | 2017-05-10 | 山东海卓电液控制工程技术研究院 | AMT hydraulic gear-shifting execution system having mechanical centering function |
-
2014
- 2014-04-01 CN CN201410130109.7A patent/CN103912533A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641236A (en) * | 2017-01-22 | 2017-05-10 | 山东科技大学 | AMT hydraulic gear shifting execution system having mechanical positioning and centering functions |
| CN106641235A (en) * | 2017-01-22 | 2017-05-10 | 山东海卓电液控制工程技术研究院 | AMT (Automated Mechanical Transmission) hydraulic gear-shifting executing system with pressure limiting and positioning function |
| CN106641224A (en) * | 2017-01-22 | 2017-05-10 | 山东海卓电液控制工程技术研究院 | AMT hydraulic gear-shifting execution system having mechanical centering function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140709 |
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| RJ01 | Rejection of invention patent application after publication |