CN2114647U - Support leg pressure sensor of hydraulic hoist - Google Patents
Support leg pressure sensor of hydraulic hoist Download PDFInfo
- Publication number
- CN2114647U CN2114647U CN 92203705 CN92203705U CN2114647U CN 2114647 U CN2114647 U CN 2114647U CN 92203705 CN92203705 CN 92203705 CN 92203705 U CN92203705 U CN 92203705U CN 2114647 U CN2114647 U CN 2114647U
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- CN
- China
- Prior art keywords
- hydraulic
- pressure sensor
- support leg
- hoist
- hydraulic lock
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Abstract
The utility model relates to a support leg pressure sensor of hydraulic hoist, which is characterized in that the support leg pressure sensor of hydraulic hoist is formed into a whole with a hydraulic lock which is arranged on a support leg oil cylinder. A spring seat is arranged at the tail part of the sliding valve which is communicated with the big cavity of the support leg oil cylinder in the hydraulic lock. A through hole is opened at the bottom of the spring seat. A barrel which is taken as an elastic sensing element is sheathed at the outer part of the spring seat. The outer wall of the barrel is appressed with a strain gage. The strain gage exports the signal through a conductor wire, a plug socket and an outer plug. Making use of the signal exported by the utility model, after being treated by a microprocessor, the stressed state of every bearing point of the hoist can be exactly analyzed, and then the main electric source loop of the hoist is controlled. The support leg pressure sensor of hydraulic hoist can ensure the hoist to avoid overturning and overloading, and the hoisting capacity can be furthest exerted.
Description
The utility model relates to the crane safety device, more particularly, is a kind of dedicated test hydraulic lift supporting leg pressure, to prevent that crane destabilization from tumbling and the pressure sensor of overload failure.
In the prior art, at number of the edition is CN11-2115, periodical construction machinery and equipment by name, the 22nd volume carried in the first phase the 44th page of periodical by port, Anhui Province boat designing institute Shandong all write be entitled as " conceptions of two kinds of electronic moment killers " literary composition, point out in the article " to judge that the hoisting crane the most direct foundation whether unstability is tumbled is the strained condition of hoisting crane supporting-point.When the supporting leg on underloading limit has certain pressure and hovering not, hoisting crane just can stable operation ", and point out that this is the digital limiter of moment of controlled object with supporting leg pressure, have the function of the maximum lifted load of restriction concurrently.Before this, various crane safety devices all adopt from lifting mechanism and luffing mechanism taking-up signal and carry out the control of hoisting crane anti-dumping, but this method reliability is low, and under the situation of some stability margin abundance, limited load-carrying ability, and set about from control supporting leg pressure, can fundamentally overcome these shortcomings.But because that hoisting crane supporting leg anti-leak requires is high, pressurized chamber fluid does not fill pipeline allowable and draws outward during work, and ridge subjects to collision on the oil cylinder, does not still have a kind of effective sensor that is used to detect hydraulic lift supporting leg pressure at present.
The purpose of this utility model is to solve problems of the prior art, a kind of sensor that detects hydraulic lift supporting leg pressure that is exclusively used in is provided, analyze the strained condition of hoisting crane supporting-point so that utilize the output signal of this pressure sensor, and then control hoisting crane main power circuit, guarantee hoisting crane trouble free service when bringing into play its load-carrying ability to greatest extent.
The purpose of this utility model is achieved through the following technical solutions.
The big chamber of hydraulic lift support oil cylinder hydraulic fluid port all is equipped with hydraulic lock, and two guiding valves of controlling support oil cylinder large and small chamber locking are respectively arranged in the described hydraulic lock, and described guiding valve tail end is by the plug stationary gland.Feature of the present utility model is: at the described guiding valve afterbody that communicates with the big chamber of support oil cylinder spring perch is set, described spring perch bottom has oil through, one one end osed top of the outside suit of spring perch cylinder, described cylinder is the gland of hydraulic lock, it is again the elastic sensing element of pressure sensor, be glued with strain-gauge at cylinder outer wall, described strain-gauge is by the socket and the external plug output signal of lead, hydraulic lock end, so this is a kind of and the incorporate supporting leg pressure sensor of hydraulic lock.
The external force of bearing when supporting leg changes, and the oil pressure in the elastic sensing element cylinder changes thereupon, and therefore cylinder produces infinitesimal deformation, and the strain-gauge of cylinder outer wall is experienced this infinitesimal deformation, and exports with the electric weight signal of respective change.
The utlity model has following advantage:
The utility model is designed to an integral body with pressure sensor and hydraulic lock, makes sensor construction simple, and element is few, and volume is little, and the shell protection is firm, not cracky.Because utilizing the inner passage of former hydraulic lock introduces the fluid in supporting leg pressurized chamber in the sensor, therefore use the utility model not change former hydraulic pressure support oil cylinder structure, do not need on support oil cylinder, to establish newly in addition the sensor aperture, do not increase the spillage risk point of oil cylinder, as pressure sensor, can accurately detect supporting leg pressure; And, remain the supporting leg oil circuit and prevent the reliable assurance of leaking as hydraulic lock.
Accompanying drawing is the utility model structural representation.
Number in the figure: 1,12, hollow plug, 2, valve body, 3, gland, 4, seal ring, 5,13, guiding valve, 6,14, spring, 7, spring perch, 8, strain-gauge, 9, cylinder, 10, sleeve pipe, 11, bakelite receptacle.
Embodiment:
Referring to accompanying drawing, on the structure foundation of Q2-5 hydraulic lock, retrofit, having two in the valve body (2) of hydraulic lock, to control support oil cylinder respectively big, the guiding valve of loculus locking, guiding valve (5) tail end that wherein communicates with the support oil cylinder loculus is by plug (1) stationary gland (3), guiding valve (13) afterbody that another communicates with the big chamber of support oil cylinder is provided with spring perch (7), the bottom of spring perch (7) has through hole, the outside suit cylinder of spring perch (7) (9), cylinder (9) root edge has seal groove, place seal ring (4) in the seal groove, the periphery of cylinder (9) is provided with sleeve pipe (10), between sleeve pipe (10) and plug (12), bakelite receptacle (11) is set, most external is fixing with hollow plug (12), be close to strain-gauge (8) at cylinder (9) outer wall, strain-gauge (8) output lead links to each other with the socket (11) of hydraulic lock end, and external plug can be passed hollow plug (12) and be inserted or extract from socket (11).Keep a fixed gap between spring perch (7) and cylinder (9) sidewall.Be free-running fit between cylinder (9), sleeve pipe (10), socket (11) and the valve body (2).Its middle sleeve (10) is two semicircular cylinders, is beneficial to assembling.
Can use 40Cr, 35Cn Mn Si or Cr18Ni 9Ti steel to make as the cylinder (9) of elastic sensing element.Strain-gauge (8) can be selected a formula, paper tinsel formula metal strain plate or semiconductor gauge for use.
Utilize the utility model, making trial-production is that the hydraulic lift safety device of controlled object becomes possibility with supporting leg pressure.
Claims (1)
1, a kind of hydraulic lift supporting leg pressure sensor, the big chamber of hydraulic lift support oil cylinder hydraulic fluid port all is equipped with hydraulic lock, having two in the described hydraulic lock, to control support oil cylinder respectively big, the guiding valve of loculus locking, described guiding valve tail end is by the plug stationary gland, the utility model is characterised in that, at the described guiding valve afterbody that communicates with the big chamber of support oil cylinder spring perch is set, described spring perch bottom has oil through, one one end osed top of the outside suit of spring perch cylinder, described cylinder be the gland of hydraulic lock be again the elastic sensing element of pressure sensor, be glued with strain-gauge at cylinder outer wall, described strain-gauge is passed through lead, the socket of hydraulic lock end and exterior plug output signal are so this is a kind of and the incorporate supporting leg pressure sensor of hydraulic lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203705 CN2114647U (en) | 1992-03-05 | 1992-03-05 | Support leg pressure sensor of hydraulic hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92203705 CN2114647U (en) | 1992-03-05 | 1992-03-05 | Support leg pressure sensor of hydraulic hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2114647U true CN2114647U (en) | 1992-09-02 |
Family
ID=4950271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92203705 Granted CN2114647U (en) | 1992-03-05 | 1992-03-05 | Support leg pressure sensor of hydraulic hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2114647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113479782A (en) * | 2021-09-07 | 2021-10-08 | 江苏思克赛斯机械制造有限公司 | Overweight protection assembly pulley of hoist and mount |
-
1992
- 1992-03-05 CN CN 92203705 patent/CN2114647U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113479782A (en) * | 2021-09-07 | 2021-10-08 | 江苏思克赛斯机械制造有限公司 | Overweight protection assembly pulley of hoist and mount |
| CN113479782B (en) * | 2021-09-07 | 2021-11-02 | 江苏思克赛斯机械制造有限公司 | Overweight protection assembly pulley of hoist and mount |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |