CN201661538U - Plate-type connecting balanced valve - Google Patents
Plate-type connecting balanced valve Download PDFInfo
- Publication number
- CN201661538U CN201661538U CN2010201506821U CN201020150682U CN201661538U CN 201661538 U CN201661538 U CN 201661538U CN 2010201506821 U CN2010201506821 U CN 2010201506821U CN 201020150682 U CN201020150682 U CN 201020150682U CN 201661538 U CN201661538 U CN 201661538U
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- valve
- main valve
- main
- fluid port
- hydraulic fluid
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Abstract
The utility model relates to a plate-type connecting balanced valve which comprises a main valve and an approach slab, wherein the main valve is fixed on the approach slab by a connecting bolt, the fastening position of the connecting bolt for connecting the main valve with the approach slab is below the position of the maximal diameter of a main hole of the main valve, and a connecting port B/ on the main valve is communicated with a port B on the approach slab. The plate-type connecting balanced valve has the following advantages: the fastening position of the connecting bolt for connecting the main valve with the approach slab is below the position of the maximal diameter of the main hole of the main valve, and under the condition that the fastening torsion reaches 150N, a main valve body can not be compressed and deformed, and the balanced valve can not lose efficacy even after a plurality of times of assembly and disassembly through the fixation of the main valve on a mainframe by the approach slab, therefore, the safe operating performance of a hydraulic crane is greatly improved.
Description
Technical field
The utility model relates to a kind of valve, relates generally to the equilibrium valve that is used for hydraulic hoist elevator, flexible, luffing hydraulic control circuit, promptly board-like connection equilibrium valve.
Background technique
The hydraulic mobile crane of domestic production has at present all used equilibrium valve in elevator, flexible, luffing hydraulic control circuit, equilibrium valve is crucial hydraulic element in hydraulic control circuit, is the guarantee of safety operation.Main installation form is threaded, board-like connection and plug-in type, and now, most of hydraulic hoist adopts board-like connection equilibrium valve on the market in several hydraulic control circuits.And existing board-like connection equilibrium valve, in use aging or connecting bolt loosening because of Sealing, after the dismounting because of the variation of tightening power size, cause the valve pocket distortion in valve body main aperture or the main aperture and spool can not be sealed well, cause in the equilibrium valve and let out, make the elevator of hydraulic hoist, flexible, luffing downslide, severe patient generation serious accident.
Summary of the invention
The technical problem that the utility model solved is to overcome above-mentioned equilibrium valve to make valve body compressive strain because of tightening power varies in size, the problem that causes equilibrium valve to lose efficacy.Provide a kind of tightening torsion can reach the board-like connection equilibrium valve that 150N can not produce distortion yet.
The technological scheme that the utility model technical solution problem is adopted is as follows: board-like connection equilibrium valve, comprise main valve and transition plate, it is characterized in that: main valve is fixed on the transition plate by connecting bolt, main valve is connected the connecting bolt of usefulness with transition plate tightening position is positioned under the maximum diameter position of main valve main aperture, the connection hydraulic fluid port B on the main valve
/Be connected with the hydraulic fluid port B on the transition plate.
Advantage of the present utility model is:
Main valve is connected the connecting bolt of usefulness with transition plate tightening position is positioned under the maximum diameter position of main valve main aperture, reach at tightening torsion under the situation of 150N, valve body of main valve can not be compressed yet and be out of shape, by transition plate main valve is fixed on the main frame, even repeatedly mounting or dismounting, equilibrium valve can not lose efficacy yet, and has greatly improved the safety operation performance of hydraulic hoist.
Description of drawings
Fig. 1 is a plan view of the present utility model
Fig. 2 is a left view of the present utility model
Fig. 3 is a plan view of the present utility model
Fig. 4 is the D-D sectional view of the utility model Fig. 1
Fig. 5 is the outline drawing of transition plate
Fig. 6 is the E-E sectional view of the utility model Fig. 3
Fig. 7 is a schematic diagram of the present utility model
Among the figure: 1, main valve, 2, transition plate, 3, connecting bolt, 4, connecting bolt, 5, valve body, 6, left end cap, 7, damping plug, 8, Zuo Gai, 9, guide rod 10, damping plug, 11, spring, 12, one-way valve, 13, valve rod, 14, piston, 15, spring, 16, spring, 17, damping plug, 18, spring protecting sleeve, 19, You Gai, 20, right end cap.
Embodiment
Below in conjunction with accompanying drawing embodiment the utility model is made into one one detailed description:
In Fig. 1, Fig. 2, Fig. 3: board-like connection equilibrium valve, comprise main valve 1 and transition plate 2, main valve 1 is connected with transition plate 2 by connecting bolt 3; There are pressure oil-source interface A, B and control oil sources interface X in the outside.In Fig. 6: the tightening position that the valve body 5 of main valve 1 is connected with transition plate 2 with connecting bolt 3 is positioned under the maximum diameter position of main valve 3 main apertures.
In Fig. 4: main valve 1 comprises valve body 5, left end cap 6 and right end cap 20, and there is the outside hydraulic fluid port X that connects on left end cap 6 surfaces, and there is damping plug 7 inside; There are outside hydraulic fluid port A of connection and B in valve body 5 surfaces
/, inside has left side lid 8, guide rod 9, damping plug 10, spring 11, one-way valve 12, valve rod 13, piston 14, spring 15, spring 16, damping plug 17, spring protecting sleeve 18, right lid 19 and right end cap 20 successively.
Oil duct a1, a2, a3 and hydraulic fluid port B are arranged in valve body 5
/, hydraulic fluid port B
/Be connected with the hydraulic fluid port B on the transition plate 2.Oil duct b1, b2, b3, b4, b5, b6, b7, b8 and b9 are arranged in valve rod 13, oil duct c1, c2 and hydraulic fluid port X are arranged on left end cap 6.
Valve rod 13 is arranged in the main aperture of valve body 5, the left end of valve rod 13 inserts in the hole of using the left side lid 8 that is threaded into valve body 5 by guide rod 9, the right-hand member of valve rod 13 is arranged in the hole with the right side lid 19 that is threaded into valve body 5, and offset by the spring 15 on the piston of tightening with spring protecting sleeve 18 14 and spring 16 and right lid 19, the ring packing section between the garden conical surface of valve rod 13 and oil duct a2 and the oil duct a3 offsets.In valve rod 13, one-way valve 12 left ends offset by the right-hand member of spring 11 with guide rod 9, and the left end of one-way valve 12 right-hand members and oil duct b6 offsets.
In Fig. 5: transition plate 2 has the outside hydraulic fluid port B that connects.
The work control procedure of this valve is as follows:
1, hydraulic fluid port A connects upper valve, and hydraulic fluid port B connects oil cylinder rodless cavity, and hydraulic fluid port X connects the control oil sources.
2, when hydraulic fluid port A comes oil, through oil duct a1, b6 and b8, this moment, one-way valve 12 was moved to the left, and oil duct b6 and oil duct b5 are communicated with, and fluid is through oil duct b5, a3, hydraulic fluid port B
/To hydraulic fluid port B, lead to oil cylinder rodless cavity.
3, when hydraulic fluid port B comes oil, through hydraulic fluid port B
/To oil duct a3, b5, b7 and b9, this moment, valve rod 13 was not moved by the effect of right-hand member spring force, have only when control mouthful X connects the pilot pressure oil sources of setting, pressure oil through hydraulic fluid port X, oil duct c1 to oil duct c2, promoting valve rod 13 moves right, oil duct a3, oil duct a2 and oil duct a1 are communicated with at this moment, and hydraulic fluid port B comes oil to lead to hydraulic fluid port A.
Claims (2)
1. board-like connection equilibrium valve, comprise main valve and transition plate, it is characterized in that: main valve is fixed on the transition plate by connecting bolt, and main valve is connected the connecting bolt of usefulness with transition plate tightening position is positioned under the maximum diameter position of main valve main aperture, the connection hydraulic fluid port (B on the main valve
/) be connected with hydraulic fluid port (B) on the transition plate.
2. board-like connection equilibrium valve according to claim 1 is characterized in that: main valve (1) comprises valve body (5), left end cap (6) and right end cap (20), and there is the outside hydraulic fluid port (X) that connects on left end cap (6) surface, and there is damping plug (7) inside; There is outside hydraulic fluid port (A) and the outside hydraulic fluid port (B that is connected of connecting on valve body (5) surface
/), inside has a left side lid (8), guide rod (9), damping plug (10), spring (11), one-way valve (12), valve rod (13), piston (14), spring (15), spring (16), damping plug (17), spring protecting sleeve (18), right lid (19) and right end cap (20) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201506821U CN201661538U (en) | 2010-04-01 | 2010-04-01 | Plate-type connecting balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201506821U CN201661538U (en) | 2010-04-01 | 2010-04-01 | Plate-type connecting balanced valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661538U true CN201661538U (en) | 2010-12-01 |
Family
ID=43231954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201506821U Expired - Lifetime CN201661538U (en) | 2010-04-01 | 2010-04-01 | Plate-type connecting balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661538U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502408A (en) * | 2011-10-20 | 2012-06-20 | 中联重科股份有限公司 | Hydraulic crane amplitude-variation rebound defect control system and automobile crane |
| CN102562699A (en) * | 2011-12-16 | 2012-07-11 | 中联重科股份有限公司 | Balance valve, hydraulic cylinder telescopic control loop and crane |
| CN105114663A (en) * | 2015-08-20 | 2015-12-02 | 常德中联重科液压有限公司 | Dynamic reversing method of reversing valve, reversing valve and reversing valve structure |
| CN105201942A (en) * | 2014-10-24 | 2015-12-30 | 徐州重型机械有限公司 | Balance valve and automobile crane |
| CN110725819A (en) * | 2019-08-26 | 2020-01-24 | 宁波江北宇洲液压设备厂 | Flow control type variable amplitude balance valve |
-
2010
- 2010-04-01 CN CN2010201506821U patent/CN201661538U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502408A (en) * | 2011-10-20 | 2012-06-20 | 中联重科股份有限公司 | Hydraulic crane amplitude-variation rebound defect control system and automobile crane |
| CN102562699A (en) * | 2011-12-16 | 2012-07-11 | 中联重科股份有限公司 | Balance valve, hydraulic cylinder telescopic control loop and crane |
| CN102562699B (en) * | 2011-12-16 | 2014-04-30 | 中联重科股份有限公司 | Balance valve, hydraulic cylinder telescopic control loop and crane |
| CN105201942A (en) * | 2014-10-24 | 2015-12-30 | 徐州重型机械有限公司 | Balance valve and automobile crane |
| CN105201942B (en) * | 2014-10-24 | 2019-02-22 | 徐州重型机械有限公司 | Balanced valve and autocrane |
| CN105114663A (en) * | 2015-08-20 | 2015-12-02 | 常德中联重科液压有限公司 | Dynamic reversing method of reversing valve, reversing valve and reversing valve structure |
| CN110725819A (en) * | 2019-08-26 | 2020-01-24 | 宁波江北宇洲液压设备厂 | Flow control type variable amplitude balance valve |
| CN110725819B (en) * | 2019-08-26 | 2021-07-16 | 宁波宇洲液压设备有限公司 | Flow control type variable amplitude balance valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |