CN2723415Y - Height limiter for hoist machinery - Google Patents
Height limiter for hoist machinery Download PDFInfo
- Publication number
- CN2723415Y CN2723415Y CN 200420052128 CN200420052128U CN2723415Y CN 2723415 Y CN2723415 Y CN 2723415Y CN 200420052128 CN200420052128 CN 200420052128 CN 200420052128 U CN200420052128 U CN 200420052128U CN 2723415 Y CN2723415 Y CN 2723415Y
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- CN
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- Prior art keywords
- height limiter
- height
- lifting
- utility
- model
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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 height limiter for the hoist machinery, which is characterized in that the height limiter comprises a travel switch that is contacted with the movable pulley of the lifting tool and is arranged at the spacing position of the steel cable for elevating cargo. Because the height limiter is arranged at the proper position of the steel wire in the utility model, when the movable pulley that forms the lifting tool is moved upward to the spacing position, the pulley is directly acted and contacted on a boundary member; the switch moving strip in the boundary member is acted, and the circuit switch is finished; thus the lifting tool is stopped elevating, and the limit protection function is realized. Compared with the existing technology, the utility model has reliable action, simple structure, easy installing, high spacing precision, and is not influenced by the load lifting height.
Description
Technical field
The utility model relates to a kind of height limiter that is used for elevator machinery
Technical background
Generally all the serve as reasons driving system that hoists of the existing height limiter that is used on the lifting equipment is told a branch operation and is removed to trigger an electric switch, and the driving system that hoists is quit work, and guarantees safety in production thereby play the limitation in height effect.The principal mode of above-mentioned height limiter has: the killer of weight hammer type, screw or cam-type.Wherein:
Weight hammer type height limiter principle of work: touch a leverage by suspender, touch a switch (quite travel switch) through leverage, switch motion, cut off, suspender stop lifting and play a protective role.Exist shortcoming to be: suspender can be made rocking motion at the lifting working process, may exceed the operating range (size limit) of limiting device lever and continue to rise, and suspender will exceed and allow height like this, but not touch leverage, the protection inefficacy.
Screw limiting device principle of work: the axle head of limiting device with the mast crane reel linked to each other, make movement relation and range of sizes, establish one and ram and trigger travel switch and come cut off on nut, suspender stops lifting and plays a protective role.Exist shortcoming to be, a cover screw and nut mechanism need be set, need the repetition test adjustment, when lifting altitude was very big, precision was not high.
Cam-type limiting device principle of work: must be by a cover variable ratio drive system; the rotation of reel is become the rotation of cam, with the mutually suitable position of cam on install a limit switch, trigger switch cuts off circuit when cam rotation; allow suspender stop lifting, play a protective role.Have shortcoming: need add a cover variable transmission mechanism, need speed governing repeatedly, when lifting altitude was very big, precision was not high.
The utility model content
The purpose of this utility model is a kind of height limiter that is used for elevator machinery of design.Make that to have switch motion reliable, spacing position is accurately clear, not influenced by lifting altitude, and simple in structure, precision height easy for installation.
The utility model realizes with following technical scheme, and this height limiter is by being constituted with the travel switch of (preset height) spacing position of steel rope with the lifting goods that is installed on that the movable pulley of suspender touches mutually.
The utility model principle of work is very simple: owing to the appropriate location (being positioned at spacing position) that height limiter is installed on the steel rope; when the movable pulley that constitutes suspender moves up to spacing position; pulley will directly act on and touching on killer; make the switch moving plate action in the killer; finish the switching of circuit; thereby make suspender stop lifting; realize the position limitation protection function; compared with the prior art; have reliable in action, simple in structure, simple installation; the limit accuracy height, and be not subjected to the influence of lifting altitude.
Description of drawings
Fig. 1 is a kind of integral structure scheme drawing of the present utility model.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing is described further concrete structure of the present utility model: in accompanying drawing 1, wherein: 1～lifting goods steel rope, 2～as the travel switch of height limiter, 3～still, 4～moving plate, 5～lead-in wire, 6～suspender, 7～movable pulley, 8～suspension hook.By above accompanying drawing as can be known, in technical solution of the present utility model, the travel switch 2 of the described spacing position that is installed on the steel rope preset height is by still 3, moving plate 4 and go between 5 and form, wherein moving plate can touch mutually with the movable pulley 7 on the suspender 6, make active and static contact touch closure (or disconnecting disengaging), make switch motion, disconnect the lifting circuit, suspender promptly stops lifting.
Claims (2)
1, a kind of height limiter that is used for elevator machinery is characterized in that this height limiter is by using the travel switch (2) of the spacing position of steel rope (1) to be constituted with the lifting goods that is installed on that the movable pulley of suspender touches mutually.
2, height limiter according to claim 1, it is characterized in that the described travel switch (2) that is installed on the spacing position of steel rope preset height is made up of still (3), moving plate (4) and lead-in wire (5) thereof, wherein moving plate can touch mutually with the movable pulley (7) on the suspender (6), make switch motion, disconnect the lifting circuit, and allow suspender stop lifting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420052128 CN2723415Y (en) | 2004-07-05 | 2004-07-05 | Height limiter for hoist machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420052128 CN2723415Y (en) | 2004-07-05 | 2004-07-05 | Height limiter for hoist machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2723415Y true CN2723415Y (en) | 2005-09-07 |
Family
ID=35037045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420052128 Expired - Fee Related CN2723415Y (en) | 2004-07-05 | 2004-07-05 | Height limiter for hoist machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2723415Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055335A (en) * | 2017-06-08 | 2017-08-18 | 青岛海西重机有限责任公司 | A kind of dead-weight lifting altitude position-limit mechanism, crane and method |
| CN107839888A (en) * | 2017-11-29 | 2018-03-27 | 沈阳金丰春航空科技有限公司 | Unmanned plane and unmanned conveyer |
-
2004
- 2004-07-05 CN CN 200420052128 patent/CN2723415Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055335A (en) * | 2017-06-08 | 2017-08-18 | 青岛海西重机有限责任公司 | A kind of dead-weight lifting altitude position-limit mechanism, crane and method |
| CN107055335B (en) * | 2017-06-08 | 2018-09-14 | 青岛海西重机有限责任公司 | A kind of dead-weight lifting altitude position-limit mechanism, crane and method |
| CN107839888A (en) * | 2017-11-29 | 2018-03-27 | 沈阳金丰春航空科技有限公司 | Unmanned plane and unmanned conveyer |
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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: 20050907 Termination date: 20100705 |