CN200988746Y - Limit protection device for hoisting equipment - Google Patents
Limit protection device for hoisting equipment Download PDFInfo
- Publication number
- CN200988746Y CN200988746Y CN 200620052699 CN200620052699U CN200988746Y CN 200988746 Y CN200988746 Y CN 200988746Y CN 200620052699 CN200620052699 CN 200620052699 CN 200620052699 U CN200620052699 U CN 200620052699U CN 200988746 Y CN200988746 Y CN 200988746Y
- Authority
- CN
- China
- Prior art keywords
- lever
- wire rope
- hoisting
- pulley
- base plate
- Prior art date
- 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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- 238000009434 installation Methods 0.000 claims description 5
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000004804 winding Methods 0.000 abstract 3
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 230000000630 rising effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a be applied to jack-up hoisting equipment limit protection device of metallurgy or chemical industry or mine enterprise. The hoisting motor, the speed reducer and the wire rope wheel are connected with each other, and the movable pulley is provided with a hoisting wire rope and a hook weight; the traction steel wire rope is respectively fixedly connected with the heavy hammer rope sleeve and the movable lever after passing through the fixed pulley, one end and two sides of the movable lever are provided with tension springs and mechanical limit positions, one end of the locking lever is contacted with the movable lever, the other end of the locking lever is connected with a contactor, the contactor and the relay are respectively connected with a hoisting motor and a brake band-type brake, and the contactor and the relay are connected with a power switch after passing through the controller. When the hook of the movable pulley drives the heavy object to rise to the safe height h between the limit ring and the steel wire rope wheel, the tension spring drives the movable lever and the lock catch lever to act to disconnect the contactor so as to stop the winding motor, and the brake band-type brake simultaneously holds the brake wheel on the connecting shaft between the winding motor and the speed reducer, so that the safety of the winding equipment is ensured.
Description
Technical field
The utility model relates to a kind of fender guard, relates in particular to a kind of lifting hoisting equipment limit protection device that is applied on industrial enterprise's lifting hoisting equipments such as metallurgy, chemical industry, building materials and mine.
Background technology
The lifting hoisting equipment is one of indispensable equipment of metallurgy, chemical industry, building materials and bargh, accidents such as wire line shoe breaks or hook comes off in use often occur.For the over protection device is also adopted in the generation of avoiding accident; as ZL87217128 " driving gib head rising inhibiting device " is exactly an example wherein; remove device etc. that this limit switch that once adopted separates the control loop power supply and all obtain in various degree effect; weak point is usually to glue extremely because of the frequent switching of disjunction element, causes weight hammering wire rope pulley.
Summary of the invention
The purpose of this utility model is to provide a kind of weight or driving gib head impulse machine rope sheave avoided to prolong the lifting hoisting equipment lifting hoisting equipment limit protection device in service life.
For achieving the above object; the technical solution adopted in the utility model is: the hoisting equipment part that a kind of lifting hoisting equipment limit protection device described in the utility model has original elevator motor, reductor, wire rope pulley, movable pulley and hoisting wirerope to constitute; also have by fixed pulley, haulage cable, truck live lever, mechanical position limitation, tension spring; snap close lever, installation base plate and weight rope sling constitute the Mechanical ﹠ Electrical Transmission part, constitute the electrical protection circuit part by contactless switch, relay, controller, source switch.After of the hoisting wirerope that is wound with on the wire rope pulley walks around movable pulley, locate, hang with weight on the hook of movable pulley.The lifting hoisting equipment drives elevator motor, reductor and wire rope pulley by proprietary control circuit when normal operation, sling or put down weight, finishes the lifting task.Be wound with limit circle on the hoisting wirerope, it is connected mutually with the weight rope sling.Haulage cable two of walking around behind the fixed pulley is connected in respectively on weight rope sling and the truck live lever.Truck live lever is in the side that base plate is installed and place between two mechanical position limitations of installing on the base plate.One of tension spring links to each other with truck live lever one end, and the other end is connected in installs on the base plate.One of snap close lever buckle passes and installs behind the base plate near truck live lever, the other end links to each other with contactless switch, two of contactless switch connects elevator motor and controller respectively, and the relay that links with controller connects braking brake, and controller links through source switch and power supply simultaneously.
Adopt lifting hoisting equipment limit protection device that as above technical scheme provides compared with prior art, can obtain following beneficial effect:
1. owing to increased the Mechanical ﹠ Electrical Transmission part newly; utilize the mechanical force of mechanical drive wheel can disconnect the contactless switch that shields reliably; can in time cut off the elevator motor power, avoid movable pulley and the unconfined rising of driving gib head, play the effect of protection hoisting equipment.
2. make braking brake embrace the brake wheel on the connecting shaft between elevator motor and the reductor reliable when disconnecting power circuit when the elevator motor power, guarantee the safe operation of hoisting equipment again.
3. easy to maintenance, maintenance load can reduce by 50%～80%, can prolong 2-3 service life doubly.
Description of drawings
Fig. 1 is the mechanics assembling scheme drawing of lifting hoisting equipment limit protection device described in the utility model, also is Figure of abstract of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to structural representation.
Fig. 3 is the conspectus that links to each other with elevator motor, braking brake.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Lifting hoisting equipment limit protection device described in the utility model by
1. elevator motor 1, reductor 2, wire rope pulley 3, hoisting wirerope 3 ' and movable pulley 11 ' formation elevator part, this part is a prior art, any hoisting equipment all has.Elevator motor 1 reductor 2, reductor 2 wire rope pulleys 3, the hoisting wirerope 3 on the wire rope pulley 3 ' by movable pulley 11 ' on chute after two fix, movable pulley 11 ' hook on hang with weight 11.
2. by fixed pulley 4 (accompanying drawing 1 indicates two fixed pulleys 4), by the haulage cable 4 on the fixed pulley 4 ', truck live lever 5, mechanical position limitation 6 or 6 ', tension spring 7, snap close lever 8, contactless switch 9, base plate 10 and weight rope sling 12, limit circle 12 ' formation Mechanical ﹠ Electrical Transmission part are installed.Be wrapped in hoisting wirerope 3 ' on limit circle 12 ' be connected with weight rope sling 12, limit circle 12 ' and wire rope pulley 3 between a safe altitude h is arranged.By the haulage cable on the fixed pulley 44 ' one be cemented on the weight rope sling 12, haulage cable 4 ' the other end and a termination of truck live lever 5 link, another termination link joint of truck live lever 5 is being installed on the base plate 10.Be contained in the mechanical position limitation 6,6 installed on base plate 10 1 sides ' the be positioned at both sides of truck live lever 5, mechanical position limitation 6 is other tension spring 7, and an end with truck live lever 5 of tension spring 7 links, and the other end is fixed on the installation base plate 10.One of snap close lever 8 buckles is passed installation base plate 10 backs near truck live lever 5, and the other end of snap close lever 8 is connected in the contactless switch 9 that is arranged on the installation base plate (10).
3. by contactless switch 9, relay K
2Controller Q
2, source switch Q
1Constitute the electrical protection circuit part.Two of contactless switch 9 respectively with elevator motor 1, controller Q
2Link relay K
2Respectively with controller Q
2, braking brake Y links described controller Q
2Be prior art, specifications and models can be selected from DL
21Type or GGD
2Type, product can be bought in market.Source switch Q
1Connect controller Q
2, wherein braking brake Y can embrace the brake wheel on the connecting shaft between elevator motor 1 and the reductor 2.During work, contactless switch K
1With relay K
2Synchronization action promptly disconnects synchronously or closes.
During work, starting elevator motor 1 makes it just to change, this moment, elevator motor 1 drove reductor 2 and wire rope pulley 3 rotations through connecting shaft, walk around hoisting wirerope 3 on the wire rope pulley 3 ' and movable pulley 11 ' action weight 11 is moved down, the result who moves be hoisting wirerope 3 ' on limit circle 12 ' drive weight rope sling 12 move down thereupon, weight rope sling 12 with haulage cable 4 ' and truck live lever 5 action with an end of truck live lever 5 toward pull down to mechanical position limitation 6 ' the position, in this position contactless switch 9 and relay K
2Be in closure state.Because of the operation of elevator motor 1, the weight on movable pulley 11 ' hook 11 is hooked.Operating personal is with 1 counter-rotating of elevator motor, wire rope pulley 3 rotate with movable pulley 11 ' or be hung on movable pulley 11 ' on weight 11 up promote, be positioned at this moment hoisting wirerope 3 ' on limit circle 12 ' risings drive weight rope sling 12 and then toward rising, when by the haulage cable on the fixed pulley 44 ' when being in relaxed state, end with truck live lever 5 under the effect of tension spring 7 up draws, and makes an end of truck live lever 5 leave mechanical position limitation 6 ' draw close to mechanical position limitation 6; Its touches snap close lever 8 and makes the other end of snap close lever 8 disconnect contactless switch 9 during by mechanical position limitation 6 when an end of truck live lever 5, via controller Q again after contactless switch 9 disconnects
2Cut off source switch Q
1Power supply, elevator motor 1 is stopped operating, simultaneously (promptly synchronous) relay K
2Disconnect, make braking brake Y embrace that the brake wheel on the connecting shaft stops operating reductor 2 and wire rope pulley 3 between elevator motor 1 and the reductor 2, limit circle 12 ' and wire rope pulley 3 between be in safe altitude h, can not take place movable pulley 11 ' unlimited rising and damage wire rope pulley 3 or whole hoisting equipment, realized the purpose of this utility model.
Claims (1)
1, a kind of lifting hoisting equipment limit protection device; elevator motor (1) connection reductor (2); reductor (2) connection wire rope pulley (3); hoisting wirerope (3 ') on the wire rope pulley (3) by the chute on the movable pulley (11 ') after two fix; it is characterized in that: the limit circle (12 ') and the weight rope sling (12) that are wrapped on the hoisting wirerope (3 ') are connected, by the haulage cable on the fixed pulley (4) (4 '.) one be cemented on the weight rope sling (12), one termination of the other end of haulage cable (4 ') and truck live lever (5) links, another termination link joint of truck live lever (5) is being installed on the base plate (10), be contained in the mechanical position limitation of installing on base plate (10) one sides (6,6 ') and be positioned at the both sides of truck live lever (5), there is tension spring (7) on mechanical position limitation (6) side, end with truck live lever (5) of tension spring (7) links, and the other end is fixed on installs on the base plate (10); One of snap close lever (8) buckle is passed installation base plate (10) back near truck live lever (5), and the other end of snap close lever (8) is connected and is arranged in the contactless switch of installing on the base plate (10) (9); Two of contactless switch (9) respectively with elevator motor (1), controller Q
2Link relay K
2Respectively with controller Q
2, braking brake Y links source switch Q
1Connect controller Q
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052699 CN200988746Y (en) | 2006-10-30 | 2006-10-30 | Limit protection device for hoisting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620052699 CN200988746Y (en) | 2006-10-30 | 2006-10-30 | Limit protection device for hoisting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200988746Y true CN200988746Y (en) | 2007-12-12 |
Family
ID=38939787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620052699 Expired - Fee Related CN200988746Y (en) | 2006-10-30 | 2006-10-30 | Limit protection device for hoisting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200988746Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101891131A (en) * | 2010-07-19 | 2010-11-24 | 长治市鑫锦吊篮安装有限公司 | Lift control device of electric clothing storage cradle |
| CN101875477B (en) * | 2009-12-04 | 2012-05-09 | 哈尔滨工业大学 | Crane with brake failure protection device and brake failure protection method |
| CN104044866A (en) * | 2014-06-17 | 2014-09-17 | 刘运启 | Counterweight-type constant-tensile-force rubber belt tensioning device for coal mine underground belt conveyor |
| CN110683475A (en) * | 2019-10-17 | 2020-01-14 | 长沙中联恒通机械有限公司 | Control system and limiting control method for hoisting limiting mechanism |
-
2006
- 2006-10-30 CN CN 200620052699 patent/CN200988746Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875477B (en) * | 2009-12-04 | 2012-05-09 | 哈尔滨工业大学 | Crane with brake failure protection device and brake failure protection method |
| CN101891131A (en) * | 2010-07-19 | 2010-11-24 | 长治市鑫锦吊篮安装有限公司 | Lift control device of electric clothing storage cradle |
| CN104044866A (en) * | 2014-06-17 | 2014-09-17 | 刘运启 | Counterweight-type constant-tensile-force rubber belt tensioning device for coal mine underground belt conveyor |
| CN110683475A (en) * | 2019-10-17 | 2020-01-14 | 长沙中联恒通机械有限公司 | Control system and limiting control method for hoisting limiting mechanism |
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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: 20071212 Termination date: 20111030 |