CN204310731U - The proving ring of crane load protector - Google Patents
The proving ring of crane load protector Download PDFInfo
- Publication number
- CN204310731U CN204310731U CN201420757237.XU CN201420757237U CN204310731U CN 204310731 U CN204310731 U CN 204310731U CN 201420757237 U CN201420757237 U CN 201420757237U CN 204310731 U CN204310731 U CN 204310731U
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- CN
- China
- Prior art keywords
- adapter
- micro
- ring
- switch
- governing screw
- Prior art date
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- Expired - Fee Related
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Abstract
The proving ring of crane load protector, belongs to hoisting crane technical field.Inside dynamometry ring, an opposite is welded with two adapter sleeves, another opposite, circle inner side is welded with two adapter plates, the line of two adapter sleeves is vertical with the line of two adapter plates, two adapter plates install micro-switch and governing screw, jam nut and check plate respectively by bent plate, and an adapter sleeve on proving ring is connected with pulley.Micro-switch and governing screw are mutually corresponding, and micro-switch and governing screw are on same axial line.The utility model cylinder list rational in infrastructure, manufactures easily, ring body structurc, good looking appearance, easy for installation, and be convenient to adjustment, be conducive to the limitation of tower crane lifting, avoiding overweight and generation that is accident, is a kind of novel protector of tower crane.
Description
Technical field
The utility model relates to a kind of protection mechanism of crane control lifting over burdening, and the device of particularly tower crane hoisting capacity protection, belongs to hoisting crane technical field.
Background technology
The swing arm of tower crane is contained in towering tower body top, can rotate, and working space is large, is mainly used in the installation of vertical and horizontal feed and the building element of material in housing construction.Be made up of metal construction tower body, operating mechanism and electric system three part.Metal construction comprises tower body, swing arm and base etc.Operating mechanism hoists, luffing, revolution and walking four part.Electric system comprises electrical motor, controller, electric power distribution cabinet, connection line, signal and illumination equipment etc.The hoisting capacity fender guard of tower crane has two kinds: one is by two proving rings, control part slide mass forms, it is bonded in proving ring with AB glue by two blocks of bow plates to control part, again by micro-switch, governing screw is contained on two bow plates respectively, during use, proving ring one end is loaded on tower arm root, lift heavy steel rope walks around pulley, when lift heavy is to constant weight, proving ring stress deformation, two bow plate actions, adjustment governing screw, it is made to reach warning, the object of power-off, tower machine can not be overloaded work, but China is southern, the north temperature difference is large, areal early, also very large difference is had evening, due to expanding with heat and contract with cold of metal, the change of the deformation coefficient of bow plate material, the aging of AB glue comes off.Another kind is made up of fixed body, slide mass, pressure block and control center four part, during use, fixed body is arranged on tower arm root, must pull down pulley just can make steel rope enter slide mass, be loaded on pulley, install and be inconvenient, the wherein resilience of weight control depended on pressure block, it is made up of rubber, long-time use, the precision that is aging, resilience of pressure block all affects the lifting accuracy rate of tower machine, easily causes misjudgment to operator.
Utility model content
The purpose of this utility model be to overcome the deformation coefficient of bow plate in existing tower crane hoisting capacity fender guard proving ring, AB glue comes off and the deficiency of aging, resilience error of pressure block; there is provided a kind of easy to install; little by variation of ambient temperature, the proving ring of the crane load protector that lifting limitation protective value is good.
The purpose of this utility model realizes like this; the proving ring of crane load protector; comprise dynamometry ring; it is characterized in that; inside described dynamometry ring, an opposite is welded with two adapter sleeves; another opposite, circle inner side is welded with two adapter plates; the line of two adapter sleeves is vertical with the line of two adapter plates; two adapter plates install micro-switch and governing screw, jam nut and check plate respectively by bent plate; micro-switch and governing screw are mutually corresponding, and micro-switch and governing screw are on same axial line.
Described bent plate is connected and fixed by connecting screw and adapter plate.
Described adapter plate both sides are provided with flange, and bent plate is arranged between two flanges.
Described micro-switch is three groups.
Adapter sleeve is by connecting panel and adopt adapter shaft to install with the sheave shaft of pulley to be connected, adapter shaft and sheave shaft are locked with fluted nut and spring cotter respectively.Check plate is connected on bent plate by governing screw, and jam nut is arranged on the bent plate between two governing screw and squeezes top check plate, avoids governing screw to loosen.
The utility model cylinder list rational in infrastructure; manufacture easily; ring body structurc; good looking appearance, easy for installation, be convenient to adjustment; be conducive to the limitation of tower crane lifting; avoid overweight and generation that is accident, be a kind of novel protector of tower crane, have good application value and market outlook.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1 dynamometry ring, 2 adapter sleeves, 3 adapter sleeves, 4 adapter plates, 5 adapter plates, 6 micro-switchs, 7 governing screw, 8 jam nuts, 9 bent plates, 10 bent plates, 11 check plates, 12 connecting screws.
Detailed description of the invention
The inner side enclosing an opposite at proving ring 1 is welded to connect cover 2,3, and the inner side on another opposite of dynamometry ring is welded and fixed plate 4,5, and the line of two adapter sleeves is vertical with the line of two adapter plates.Adapter plate 4,5 installs bent plate 9 and bent plate 10 respectively by connecting screw 12, bent plate 9 installs three micro-switchs 6, bent plate 10 is connected and fixed check plate 11 by three governing screw 7, then on bent plate 10 three governing screw 7 two spacing between two jam nuts 8 are installed squeeze and head on check plate 11.Three micro-switchs are corresponding on same line of centers respectively with three governing screw.Proving ring arranges cover plate, and the profile of proving ring is as same cake.Adapter sleeve 3 is by connecting panel and adopt adapter shaft to install with the sheave shaft of pulley to be connected.Adapter shaft and sheave shaft tighten fluted nut respectively and plug spring cotter.
During proving ring mounting and adjusting, adjust governing screw respectively, it is made to reach warning, the object of power-off, tightly go up jam nut again, because the many employings of inner structure are welded to connect, attaching parts difficult drop-off, because of stress point and micro-switch at a right angle, power-down mode is direct, because locking mode is unique, use the two one easy methods of cylinder of pushing up, easy to adjust, governing screw not easily loosens, only this product one end need be loaded on tower machine lifting arm root or tower cap during installation, again connecting panel (proving ring place) adapter shaft is extracted, hang up hoist rope, load onto adapter shaft just can use.When proving ring stress deformation, when exceeding design weight, micro-switch contacts with governing screw, and power source of alarm loop is connected, and reminds operating personal, avoids causing safety misadventure.
Claims (4)
1. the proving ring of a crane load protector; comprise dynamometry ring; it is characterized in that; inside described dynamometry ring, an opposite is welded with two adapter sleeves; another opposite, circle inner side is welded with two adapter plates, and the line of two adapter sleeves is vertical with the line of two adapter plates, and two adapter plates install micro-switch and governing screw, jam nut and check plate respectively by bent plate; micro-switch and governing screw are mutually corresponding, and micro-switch and governing screw are on same axial line.
2. the proving ring of crane load protector according to claim 1, is characterized in that, described bent plate is connected and fixed by connecting screw and adapter plate.
3. the proving ring of crane load protector according to claim 1, is characterized in that, described adapter plate both sides are provided with flange, and bent plate is arranged between two flanges.
4. the proving ring of crane load protector according to claim 1, is characterized in that, described micro-switch is three groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757237.XU CN204310731U (en) | 2014-12-07 | 2014-12-07 | The proving ring of crane load protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420757237.XU CN204310731U (en) | 2014-12-07 | 2014-12-07 | The proving ring of crane load protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204310731U true CN204310731U (en) | 2015-05-06 |
Family
ID=53133058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420757237.XU Expired - Fee Related CN204310731U (en) | 2014-12-07 | 2014-12-07 | The proving ring of crane load protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204310731U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629432A (en) * | 2016-10-18 | 2017-05-10 | 徐萍 | Safety overload preventing structure used for building hoisting tower winching wheel |
| CN106629433A (en) * | 2016-10-18 | 2017-05-10 | 徐萍 | Overload preventing device for building hoisting tower winding wheel |
| CN107522088A (en) * | 2017-09-27 | 2017-12-29 | 河南省大方重型机器有限公司 | A kind of frictional overload Automatic-falling suspender |
| CN107720526A (en) * | 2017-09-27 | 2018-02-23 | 河南省大方重型机器有限公司 | A kind of steel wire rope overload Automatic-falling suspender |
-
2014
- 2014-12-07 CN CN201420757237.XU patent/CN204310731U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629432A (en) * | 2016-10-18 | 2017-05-10 | 徐萍 | Safety overload preventing structure used for building hoisting tower winching wheel |
| CN106629433A (en) * | 2016-10-18 | 2017-05-10 | 徐萍 | Overload preventing device for building hoisting tower winding wheel |
| CN107522088A (en) * | 2017-09-27 | 2017-12-29 | 河南省大方重型机器有限公司 | A kind of frictional overload Automatic-falling suspender |
| CN107720526A (en) * | 2017-09-27 | 2018-02-23 | 河南省大方重型机器有限公司 | A kind of steel wire rope overload Automatic-falling suspender |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150506 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |