CN201155589Y - Liquor controlled multipath valve rod positioning device improvement - Google Patents
Liquor controlled multipath valve rod positioning device improvement Download PDFInfo
- Publication number
- CN201155589Y CN201155589Y CNU2008200833710U CN200820083371U CN201155589Y CN 201155589 Y CN201155589 Y CN 201155589Y CN U2008200833710 U CNU2008200833710 U CN U2008200833710U CN 200820083371 U CN200820083371 U CN 200820083371U CN 201155589 Y CN201155589 Y CN 201155589Y
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- CN
- China
- Prior art keywords
- spring
- seat
- valve rod
- big
- shaft shoulder
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a construction machinery, in particular to the improvement of the locating device of the valve stem of a hydraulic control multiple unit valve, comprising a valve stem (1), a case (9), a large spring (6) and a small spring (3); a spring seat (2) is movably arranged inside the case (9); the large spring (6) and the small spring (3) which are coaxially sheathed with each other are sheathed movably on the spring seat (2); the valve stem (1) penetrates through the spring seat (2); the valve stem (1) and the spring seat (2) constitute a fitting structure by which the valve stem (1) drives the spring seat (2) forward and backward. On the premise of guaranteeing the prior function of the multiple unit valve, the locating device of the valve stem in the improved hydraulic control multiple unit valve is simplified; the external dimension of a valve assembly is reduced; material consumption is saved; cost is lowered; and the esthetic degree of the appearance of the valve assembly is also increased.
Description
Technical field
The utility model relates to engineering machinery, relates in particular to four (as promoting position, meta, decline position, floating bit) positioning meanss of commutation valve rod of hydraulic control multiple directional control valve.
Background technique
At present, in engineering machinery, in the hydraulic control multiple directional control valve that uses on the loader, its positioning means is the two ends that are distributed in valve rod, big spring at one end, little spring is at the other end, and all there are end cap, spring seat etc. in two ends, and the big little spring at two ends is done the time spent together and just finished valve rod from the process of position to floating bit that descend.This complex structure, the boundary dimension of valve assembly is also bigger, Heavy Weight, the processing cost height, the aesthetics of external form is not good enough yet.
The model utility content
The utility model will solve the deficiency of original structure, and the improvement of a kind of compact structure, hydraulic control multi-way valve valve rod positioning means that cost is low is provided.
The technological scheme that the utility model technical solution problem is adopted is: a kind of improvement of hydraulic control multi-way valve valve rod positioning means, comprise valve rod, end cap, big spring, little spring, it is characterized in that the spring seat activity is loaded in the end cap, big spring, little spring be coaxial be nested and kink in spring seat, valve rod runs through spring seat, but both make the cooperating structure of valve rod driving spring seat advance and retreat.
But the cooperating structure of described valve rod driving spring seat advance and retreat is: spring seat has axial region and seat portion, seat portion is shaped on big seat surface and the little seat surface for big spring and little spring phase site, axial region is made the tubulose that runs through for valve rod, tubular head is connected with for the spacing locating piece of back-up ring, and the other end seat of little spring is in back-up ring; Be shaped on two shaft shoulders of size on the shaft of valve rod successively, the wherein big shaft shoulder can with spring seat exterior edge face Xiang Ding, the big slightly end of diameter is made at the top of valve rod, and forms the shaft shoulder can collude the tension and compression seat; Wedge has large, medium and small three seat surfaces and the interior shaft shoulder, and wherein big seat surface pushes up mutually with the other end of big spring, and middle seat surface can push up mutually with back-up ring, and little seat surface can push up mutually with the interior shaft shoulder that is formed on the spring seat axial region, and the interior shaft shoulder of wedge and the shaft shoulder of valve rod end link.
The shaft shoulder that the tension and compression seat can be colluded in described valve rod top is made of the screw rod tail end.
The beneficial effects of the utility model are: under the prerequisite of the original function that guarantees valve, simplified positioning means, reduced the boundary dimension of multi-way valve assembly, saved materials consumption, reduced cost, increased the aesthetics of multi-way valve assembly profile.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail
Fig. 1 is the configuration state figure of embodiment's multi-way valve when being in meta;
Fig. 2 is that embodiment's multi-way valve is in the configuration state figure when promoting the position;
Fig. 3 is stem structure figure;
Fig. 4 is that embodiment's multi-way valve is in the configuration state figure when descending the position;
Fig. 5 is the configuration state figure of embodiment's multi-way valve when being in floating bit;
Fig. 6 is the spring seat structural drawing;
Fig. 7 is the wedge structural drawing.
Among the figure 1, valve rod, 2, spring seat, 3, little spring, 4, back-up ring, 5, positioning block, 6, big spring,
7, bolt, 8, wedge, 9, end cap.
Embodiment
Referring to accompanying drawing 1, the utility model positioning means mainly comprises valve rod 1, end cap 9, big spring 6, little spring 3, and big little spring is helical spring, and spring seat 2 activities are loaded in end cap 9 chambeies.Spring seat 2 has axial region B and the A of seat portion, the A of seat portion cylindrical is processed into two step surfaces, wherein big footpath step surface constitutes the big footpath seat surface 21 for big spring 6 phase sites, and the path step surface constitutes the path seat surface 22 for little spring 3 phase sites, and circle is processed into an exterior edge face step 24 in the A of seat portion; Axial region B makes the tubulose that runs through for valve rod 1, and the shaft shoulder 23 in being shaped in the pipe, but valve rod 1 driving spring seat 2 advance and retreat are in conjunction with shown in Figure 6; Back-up ring 4 kinks are in axial region B, and tubular head is welded with for the spacing positioning ring 5 of back-up ring 4.Wedge 8 as shown in Figure 7, be shaped on large, medium and small three seat surfaces 83,82,81 and the interior shaft shoulder 84, big spring 6 is placed in outside the spring seat 2, its two ends are respectively located in the big footpath of spring seat seat surface 21 and the big footpath of wedge seat surface 83, little spring 3 is placed in the big spring 6, its two ends are respectively located in spring seat path seat surface 22 and back-up ring 4, coaxial being nested of promptly big little spring; The middle seat surface 82 of wedge 8 is in operation and can pushes up mutually with back-up ring 4, and little seat surface 81 is in operation and can pushes up mutually with the interior shaft shoulder 23 that is formed on spring seat axial region B.Valve rod 1 is shaped on two shaft shoulders 11 of size and 12 as shown in Figure 3 successively on the shaft, the wherein big shaft shoulder 11 can push up mutually with spring seat 2 exterior edge face steps 24, and the little shaft shoulder 12 can push up mutually with wedge path seat surface 81.The inner of valve rod 1 is threaded with bolt 7, and the stubborn portion of bolt 7 tail ends constitutes the shaft shoulder 13 that can collude the shaft shoulder 84 in the tension and compression seat.
When back-up ring 4 was subjected to the external force of right-to-left, compression little spring 3 also moved with the axial region B of little spring 3 along spring seat 2.The interior shaft shoulder 23 of spring seat 2 is used for wedge 8, bolt 7, when valve rod 1 is moved to the left on earth together, i.e. the locating face that contacts with the little seat surface 81 of wedge 8 during floating bit.The middle seat surface 82 of wedge 8 is used for wedge 8, bolt 7, valve rod 1 and is moved to the left to the locating face that contacts with back-up ring 4 when descending the position together.Spacing when when the little seat surface 81 of valve rod 1, the little shaft shoulder 12 when bolt 7 is moved to the left together on the valve rod 1 and wedge 8 contacts, being used to promote; Therefore, the utility model can concentrate on the location of four of the lifting positions of hydraulic control multiple directional control valve valve rod 1, meta, decline position, floating bit in the same end cap 9 simultaneously.
Working procedure
After valve rod 1, spring seat 2 (comprising little spring 3, back-up ring 4, positioning block 5), big spring 6, bolt 7, wedge 8 are assembled together, make the length L between the right side of the left side of spring seat 2 and wedge 8 just equal the degree of depth of end cap 9 cavitys.Because the free length of big spring 6 is greater than the installing space length H between the big footpath of spring seat seat surface 21 and the big footpath of the wedge seat surface 83, so the spring force that big spring 6 precompression are produced acts between the big footpath of spring seat seat surface 21 and the big footpath of the wedge seat surface 83, spring seat 2 and the big shaft shoulder 11 of wedge 8 extruding valve rods 1 and the shaft shoulder 13 of bolt 7, so just make valve rod 1 be in the neutral position, position promptly shown in Figure 1.
When valve rod 1 is subjected to from left to right an active force, the big shaft shoulder 11 of valve rod 1 promotes spring seats 2 and overcomes the spring force that big spring 6 precompression are produced and move right, up to the little shaft shoulder 12 on the valve rod 1 with till little seat surface 81 on the wedge 8 contacts, as shown in Figure 2, valve rod 1 is finished from meta to the process that promotes like this.When the active force of cancelling from valve rod 1 from left to right, valve rod 1 can be under the spring force effect that big spring 6 is produced, and the big shaft shoulder 11 that acts on valve rod 1 by spring seat 2 makes valve rod 1 get back to the neutral position from promoting the position.
When valve rod 1 is subjected to the active force of a right-to-left, the shaft shoulder 13 pulling wedges 8 of the bolt 7 that is threaded with valve rod 1 overcome the spring force that big spring 6 precompression are produced and are moved to the left, up to the middle seat surface 82 on the wedge 8 with till back-up ring 4 contacts, as shown in Figure 4, valve rod 1 is finished the process from meta to the position that descends.When valve rod 1 is cancelled the active force of right-to-left, valve rod 1 can be under the spring force effect that big spring 6 is produced, and the shaft shoulder 13 that acts on bolt 7 by wedge 8 makes valve rod 1 get back to neutral position shown in Figure 1 from the position that descends.
On the basis of position that descends, when valve rod 1 is subjected to the active force of the further right-to-left that strengthens, middle seat surface 82 on the wedge 8 contacts with back-up ring 4 and overcomes the spring force that little spring 3 produces again and be moved to the left, up to the little seat surface 81 of wedge 8 with till the interior shaft shoulder 23 of spring seat 2 contacts, as shown in Figure 5, valve rod 1 is finished from the process of position to floating bit that descend.When cancelling the active force of right-to-left on the valve rod 1, valve rod 1 can be under the spring force effect that big spring 6 and little spring 3 are produced, and the shaft shoulder 13 that acts on bolt 7 by wedge 8 makes valve rod 1 get back to the neutral position from floating bit.
Claims (4)
1, a kind of improvement of hydraulic control multi-way valve valve rod positioning means, comprise valve rod (1), end cap (9), big spring (6), little spring (3), it is characterized in that spring seat (2) activity is loaded in the end cap (9), big spring (6), little spring (3) be coaxial be nested and kink in spring seat (2), valve rod (1) runs through spring seat (2), and both make valve rod (1) but the cooperating structure of driving spring seat (2) advance and retreat.
2, according to the improvement of the described hydraulic control multi-way valve of claim 1 valve rod positioning means, it is characterized in that described valve rod (1) but the cooperating structure of driving spring seat (2) advance and retreat is: spring seat (2) has axial region (B) and seat portion (A), seat portion (A) is shaped on big seat surface (21) and the little seat surface (22) for big spring (6) and little spring (3) phase site, axial region (B) is made the tubulose that runs through for valve rod (1), tubular head is connected with for the spacing locating piece of back-up ring (4), and the other end seat of little spring (3) is in back-up ring (4); Be shaped on successively on the shaft of valve rod (1) size two shaft shoulders (11) and (12), the wherein big shaft shoulder (11) can with spring seat (2) exterior edge face Xiang Ding, the big slightly end of diameter is made at the top of valve rod (1), and formation can collude the shaft shoulder (13) of tension and compression seat (8); Wedge (8) has large, medium and small three seat surfaces (83), (82), (81) and the interior shaft shoulder (84), wherein big seat surface (83) pushes up mutually with the other end of big spring (6), middle seat surface (82) can push up mutually with back-up ring (4), little seat surface (81) can push up mutually with the interior shaft shoulder (23) that is formed on spring seat axial region (B), and the interior shaft shoulder (84) links with the shaft shoulder (13).
3,, it is characterized in that the valve rod top can collude the shaft shoulder of tension and compression seat (8) (13) and be made of the screw rod tail end according to the improvement of the described hydraulic control multi-way valve of claim 2 valve rod positioning means.
4,, it is characterized in that the tubular head of axial region (B) is welded with for the spacing positioning ring (5) of back-up ring (4) according to the improvement of the described hydraulic control multi-way valve of claim 2 valve rod positioning means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200833710U CN201155589Y (en) | 2008-02-04 | 2008-02-04 | Liquor controlled multipath valve rod positioning device improvement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200833710U CN201155589Y (en) | 2008-02-04 | 2008-02-04 | Liquor controlled multipath valve rod positioning device improvement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155589Y true CN201155589Y (en) | 2008-11-26 |
Family
ID=40103372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200833710U Expired - Fee Related CN201155589Y (en) | 2008-02-04 | 2008-02-04 | Liquor controlled multipath valve rod positioning device improvement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155589Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016432A (en) * | 2012-12-17 | 2013-04-03 | 三一重工股份有限公司 | Secondary relief valve, hydraulic lowering system for cranes and crane |
-
2008
- 2008-02-04 CN CNU2008200833710U patent/CN201155589Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016432A (en) * | 2012-12-17 | 2013-04-03 | 三一重工股份有限公司 | Secondary relief valve, hydraulic lowering system for cranes and crane |
| CN103016432B (en) * | 2012-12-17 | 2016-02-10 | 三一重工股份有限公司 | Secondary relief, hoist fall width hydraulic system and hoist |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20130204 |