CN101162024B - Multifunctional hydraulic lock - Google Patents
Multifunctional hydraulic lock Download PDFInfo
- Publication number
- CN101162024B CN101162024B CN2007100780319A CN200710078031A CN101162024B CN 101162024 B CN101162024 B CN 101162024B CN 2007100780319 A CN2007100780319 A CN 2007100780319A CN 200710078031 A CN200710078031 A CN 200710078031A CN 101162024 B CN101162024 B CN 101162024B
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- valve
- big
- valve body
- oil
- moveable door
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- Expired - Fee Related
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Abstract
The invention discloses a multi-function hydraulic lock, belonging to a hydraulic control device and aiming to provide a hydraulic lock with small volume, compact structure and stable operation. The hydraulic lock comprises a valve body and two hydraulic control one way valve plugs arranged inside the valve body, wherein, one valve plug is composed of an end closure (11), a big valve (4), a big spring (6) and a mandril (18); the other valve plug is composed of a small valve (17), a spring seat (5) and a small spring (15). The valve body (7) is provided with an oil-in (1), a big valve port (16) and a small valve port (14); the oil duct between the oil-in (1) and the big valve port (16) is sealed by the big valve (4); the oil duct between the oil-in (1) and the small valve port (14) is sealed by the small valve (17). The invention does not have the phenomena of matitation, vibration or impact, and can be widely applied to various hoisting installations.
Description
Technical field: the present invention relates to a kind of hydraulic control device of hoist, relate in particular to a kind of hydraulic lock that is used for tower crane lifting cylinder.
Background technique: at present, hydraulic lock is the important kit of tower crane, it can make weight and actuator reliably locking play locking pressurize effect, thereby assurance tower machine is safe and reliable in the arbitrary position of need of work.At present, the structure of widely used bidirectional hydraulic lock is: the push rod by the control of guide's oil circuit is installed at the position, stage casing of valve body, the one-way valve of two homalographics is installed in the two ends, the left and right sides of this push rod symmetry; The defective of this structure is: big, the leakage easily of axial dimension, and shake, vibration or impact phenomenon appear during work, have a strong impact on the safe operation of tower machine.
Summary of the invention: at the above-mentioned defective that exists in the prior art, the present invention aims to provide little, the compact structure of a kind of volume, the multifunctional hydraulic lock that operates steadily.
To achieve these goals, the present invention by the following technical solutions: it comprises valve body, is installed in two fluid-control one-way spools in this valve body; One of them fluid-control one-way spool by the airtight end cap that is fixed on the valve body right-hand member, be installed in big valve that this valve body stage casing is provided with oilhole, be installed in the big spring between big valve and the end cap and be installed in the valve body left end movably push rod constitute, another fluid-control one-way spool by be provided with oil groove be installed in the little moveable door in the big valve and be provided with the spring seat of throttle orifice and be installed in little moveable door and spring seat between little spring constitute; Valve body is provided with filler opening, big valve hydraulic fluid port and little moveable door hydraulic fluid port, and the oil duct between filler opening and the big valve hydraulic fluid port is by movably big valve sealing, and the oil duct between filler opening and the little moveable door hydraulic fluid port is by movably little moveable door sealing.
On end cap, be provided with screw press, be provided with movably jacking block between spring seat and the end cap.
Compared with the prior art, the present invention since with in traditional bidirectional hydraulic lock originally two one-way valves by axial symmetrical arrangement changed the plug-in type structure into, thereby reduced the axial dimension of hydraulic lock effectively, it is compact more to make it structure; Simultaneously, because two one-way valves have adopted the plug-in type structure, therefore two valve that original area is equated have changed the different large and small valve of area into, and on little moveable door, set up throttle orifice, therefore avoided the generation of the shake in lifting process of tower machine, vibration or impact phenomenon effectively, the operation of tower machine is more steady.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a hydraulic schematic diagram of the present invention.
Among the figure: filler opening 1 oilhole 2 oil grooves 3 big valve 4 spring seats 5 big springs 6 valve bodies 7 locking nuts 8 screw press 9 cases 10 end caps 11 jacking blocks 12 throttle orifices 13 little moveable door hydraulic fluid ports 14 little springs 15 big valve hydraulic fluid port 16 little moveable doors 17 push rods 18
Embodiment: the invention will be further described below in conjunction with accompanying drawing and specific embodiment:
In Fig. 1, valve body 7 is provided with filler opening 1, big valve hydraulic fluid port 16 and little moveable door hydraulic fluid port 14, and above-mentioned each hole is communicated with valve pocket.End cap 11 is fixed on the valve body 7 by screw thread and with the right-hand member sealing of described valve pocket, the big valve 4 that end face is provided with oilhole 2 is installed in the described valve pocket in valve body 7 stage casings, be provided with big spring 6 between big valve 4 and end cap 11, push rod 18 is installed in the valve pocket of valve body 7 left side sections; Push rod 18 and big valve 4 can move in valve pocket, and the oil duct between filler opening 1 and the big valve hydraulic fluid port 16 is by the tapered end face sealing of big valve 4.The little moveable door 17 that is provided with oil groove 3 is installed in the big valve 4 with the spring seat 5 that is provided with throttle orifice 13, between little moveable door 17 and spring seat 5 little spring 15 is installed; Little moveable door 17 can move in big valve 4, and the oil duct between filler opening 1 and the little moveable door hydraulic fluid port 14 is by little moveable door 17 controls that are enclosed in oilhole 2 places.
In conjunction with Fig. 1 and Fig. 2, constitute the spool of a Pilot operated check valve by end cap 11, big valve 4, big spring 6 and push rod 18, constitute the spool of another Pilot operated check valve by little moveable door 17, spring seat 5 and little spring 15.
For the ease of regulating oil pressure, on end cap 11, be provided with screw press 9, between spring seat 5 and end cap 11, be provided with movably jacking block 12.Loosening for fear of screw press 9, on this screw rod, also be provided with locking nut 8; For attractive in appearance, locking nut 8 and screw press 9 are by case 10 cover caps that are installed on the valve body 7.
Working principle, as shown in Figure 1 and Figure 2: when the oil cylinder jacking, hydraulic oil enters the left side section of valve pocket by filler opening 1 and push rod 18 is pushed up to the left side; Meanwhile, hydraulic oil at first backs down little moveable door 17 by oilhole 2 on the one hand, enter the stage casing of valve pocket again through oil groove 3, throttle orifice 13, enter the rodless cavity of oil cylinder then by little moveable door hydraulic fluid port 14, hydraulic oil backs down the stage casing that big valve 4 enters valve pocket on the other hand, is entered the rodless cavity of oil cylinder then by big valve hydraulic fluid port 16; Hydraulic oil in the cylinder rod chamber flows back to oil sump by oil pipe.When oil cylinder descended, one road hydraulic oil enters oil cylinder by oil pipe rod chamber, another road hydraulic oil acted on the left end of push rod 18 by control oil channel, and push rod 18 moves right and successively backs down little moveable door 17, big valve 4, thereby opens two Pilot operated check valves; Hydraulic oil in the oil cylinder rodless cavity is divided into two-way and flows back to oil sump through above-mentioned two Pilot operated check valves: the little moveable door hydraulic fluid port 14 of leading up to enters the stage casing of valve pocket, enter the left side section of valve pocket again through throttle orifice 13, oil groove 3 and oilhole 2, flow back to oil sump by filler opening 1 then; Another road enters the stage casing of valve pocket by big valve hydraulic fluid port 16, enters the left side section of valve pocket and flows back to oil sump by filler opening 1 by big valve 4 then.
Claims (2)
1. a multifunctional hydraulic lock comprises valve body, is installed in two fluid-control one-way spools in this valve body; It is characterized in that: one of them fluid-control one-way spool is by the airtight end cap (11) that is fixed on valve body (7) right-hand member, be installed in the big valve (4) that this valve body stage casing is provided with oilhole (2), be installed in the big spring (6) between big valve (4) and the end cap (11), and being installed in movably push rod (18) formation of valve body (7) left end, another fluid-control one-way spool is by being installed in the little moveable door (17) that is provided with oil groove (3) in the big valve (4), be installed in the spring seat (5) that is provided with throttle orifice (13) in the big valve (4), and the little spring (15) that is installed between little moveable door (17) and the spring seat (5) constitutes; Valve body (7) is provided with filler opening (1), big valve hydraulic fluid port (16) and little moveable door hydraulic fluid port (14), oil duct between filler opening (1) and the big valve hydraulic fluid port (16) is by movably big valve (4) sealing, and the oil duct between filler opening (1) and the little moveable door hydraulic fluid port (14) is by movably little moveable door (17) sealing.
2. multifunctional hydraulic lock according to claim 1 is characterized in that: be provided with screw press (9) on end cap (11), be provided with movably jacking block (12) between spring seat (5) and the end cap (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100780319A CN101162024B (en) | 2007-11-29 | 2007-11-29 | Multifunctional hydraulic lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100780319A CN101162024B (en) | 2007-11-29 | 2007-11-29 | Multifunctional hydraulic lock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101162024A CN101162024A (en) | 2008-04-16 |
| CN101162024B true CN101162024B (en) | 2010-08-11 |
Family
ID=39296996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100780319A Expired - Fee Related CN101162024B (en) | 2007-11-29 | 2007-11-29 | Multifunctional hydraulic lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101162024B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003423A (en) * | 2010-12-17 | 2011-04-06 | 徐州重型机械有限公司 | Hydraulic bidirectional lock and crane with same |
| CN103470572B (en) * | 2013-09-10 | 2016-03-02 | 浙江苏强格液压股份有限公司 | Hydraulic lock assembly and the bidirectional hydraulic lock with above-mentioned hydraulic lock assembly |
| CN103671359A (en) * | 2014-01-03 | 2014-03-26 | 四川建设机械（集团）股份有限公司 | Oil cylinder hydraulic lock used for tower crane jacking system |
| CN106382267A (en) * | 2016-12-14 | 2017-02-08 | 湘潭大学 | Hydraulic lock |
| CN109236779B (en) * | 2018-10-31 | 2020-07-21 | 北京天地玛珂电液控制***有限公司 | Hydraulic control one-way valve and pressure relief assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201125894Y (en) * | 2007-11-29 | 2008-10-01 | 贵州枫阳液压有限责任公司 | Multifunctional hydraulic lock |
-
2007
- 2007-11-29 CN CN2007100780319A patent/CN101162024B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201125894Y (en) * | 2007-11-29 | 2008-10-01 | 贵州枫阳液压有限责任公司 | Multifunctional hydraulic lock |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101162024A (en) | 2008-04-16 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20141129 |
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| EXPY | Termination of patent right or utility model |