CN202657889U - Variable-amplitude winding drum groove-jumping cutting-off device of crane - Google Patents
Variable-amplitude winding drum groove-jumping cutting-off device of crane Download PDFInfo
- Publication number
- CN202657889U CN202657889U CN 201220174302 CN201220174302U CN202657889U CN 202657889 U CN202657889 U CN 202657889U CN 201220174302 CN201220174302 CN 201220174302 CN 201220174302 U CN201220174302 U CN 201220174302U CN 202657889 U CN202657889 U CN 202657889U
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- China
- Prior art keywords
- switch
- amplitude
- rocker arm
- crane
- closed switch
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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 provides a variable-amplitude winding drum groove-jumping cutting-off device of a crane. The cutting-off device is fixedly arranged on a bottom plate of a speed reducer rack of a winding drum; the bottom plate is further provided with a mechanical rocker arm shaft; the rocker arm shaft is provided with a mechanical rocker arm contact; the mechanical rocker arm contact is provided with a normally-closed switch; the normally-closed switch is connected with a variable-amplitude hoisting and jacking cutting-off circuit of the crane and an alarming circuit in series to form a circuit cutting-off switch system; when a jumped steel wire rope is pressed on a winding drum transmission shaft and triggers the mechanical rocker arm contact, the mechanical rocker arm contact moves forwards to be released from the limitation of a rocker arm; under the effect of the rocker arm shaft, the normally-closed switch is moved backwards and oppositely to be released from the limitation of the switch, so that the normally-closed switch is changed into an opening power-off state from a closed power-on state and the ascending movement of the winding drum of the steel wire rope is stopped. The cutting-off device disclosed by the utility model has the beneficial effects of effectively controlling the damages on a variable-amplitude winding drum, the steel wire rope, a shaft and a speed reducer and avoiding serious accidents as a hanging arm falls down due to the damaging of the steel wire rope in the incorrect operation of the hanging arm. The reliability reaches to be 100%.
Description
Technical field
The utility model relates to a kind of protective device for crane, and particularly a kind of steel rope that prevents is from twining the amplitude-changing drum switch of crane for preventing tripping of axle after reel is jumped out.
Background technology
Because the crane amplitude variation spool velocity is very fast, and the driver becomes step-down operation in the moment of handling the suspension rod rising, because the effect of inertia when suspension rod rises, suspension rod can not be stopped and commutating immediately, cause the steel rope loose winding after the reel commutation, will deviate from outside the reel when serious, because steel rope is in narrow the meeting of reel and turning cylinder, if the driver does not find steel rope and has deviate from reel, when carrying out upper lift operations again, will cause wirerope-winding on turning cylinder, make the badly damaged or disconnection of steel rope, cause simultaneously reel, axle, drop-gear box, the parts such as support are badly damaged under the extruding of steel rope, even suspension rod drops and causes more serious goods damage or casualty accident, be badly in need of the cut-out switch after the development steel rope is deviate from reel for this reason, prevent that as early as possible steel rope from twining the axle accident.
Summary of the invention
For solving the problem that exists in the above-mentioned technology, the purpose of this utility model provides a kind of amplitude-changing drum switch of crane for preventing tripping, is beneficial to the generation of protecting crane facility and avoiding casualty accident.Simultaneously, this cutter is effectively controlled the damage of amplitude-changing drum and steel rope, axle, retarder, and the steel rope of avoiding arm to cause in maloperation damages and accident that arm drops.
For achieving the above object, technical solution of the present utility model provides a kind of amplitude-changing drum switch of crane for preventing tripping, this cutter is loaded on winding steel wire rope reel transmission shaft reel one side of reductor, be electrically connected with amplitude-variation hoisting liter top cut-out circuit and the warning circuit of hoisting crane, wherein: this cutter includes the base plate that is bolted on the retarder frame that the hole is fixed on reel, on base plate, also be equipped with and use mechanical rocker shaft, at rocker shaft mechanical rocker contacts is housed, on the machinery rocker contacts normally closed switch is housed, normally closed switch rises top cut-out circuit with the amplitude-variation hoisting of described hoisting crane and warning circuit is connected the circuitry cuts on-off system of formation; On the described rocker shaft spring is housed, an end of spring is fixed on the spring pin, and the other end of spring is fixed on the mechanical rocker contacts, mechanical rocker contacts withstand under the effect of spring rocking arm spacing on, switch is spacing to make the closed energising of normally closed switch; When the steel rope of jumping out is pressed on the reel transmission shaft and touches mechanical rocker contacts, it is spacing to make mechanical rocker contacts move forward the disengagement rocking arm, under the effect of rocker shaft, oppositely the mobile switch of throwing off is spacing backward with normally closed switch, normally closed switch is become by closed "on" position open off-position, make cable drum stop vertical motion.
Effect of the present utility model is the damage that this cutter has effectively been controlled amplitude-changing drum and steel rope, axle, retarder, and the steel rope of having avoided arm to cause in maloperation damages and the grave accident that causes arm to drop, and reliability reaches 100%.And simple in structure being convenient to installed, and be practical, and the operating personal reflection is quite reliable.Whenever the device damage after avoiding once job-hoping can be saved the fund of several thousand yuan even units up to ten thousand, does not also comprise parking charge, repair expense, and other indirect loss and causality loss etc.
Description of drawings
Fig. 1 is amplitude-changing drum switch of crane for preventing tripping structural representation of the present utility model.
Among the figure:
1, spacing 4, the rocker shaft of spacing 3, the rocking arm of bolt fixed orifice 2, switch
5, mechanical rocker contacts 6, spring 7, base plate 8, spring pin
9, steel rope 10, normally closed switch 11, reel 12, reel transmission shaft
The specific embodiment
By reference to the accompanying drawings amplitude-changing drum switch of crane for preventing tripping structure of the present utility model and course of action are illustrated.
As shown in Figure 1, amplitude-changing drum switch of crane for preventing tripping of the present utility model is installed on reel 11 1 sides of the lay winding wire ropes 9 reel transmission shafts 12 of reductor, is electrically connected with amplitude-variation hoisting liter top cut-out circuit and the warning circuit of hoisting crane.This cutter includes the base plate 7 that is bolted on the retarder frame that the hole is fixed on reel, on base plate 7, also be equipped with mechanical rocker shaft 4, at rocker shaft 4 mechanical rocker contacts 5 is housed, on the machinery rocker contacts 5 normally closed switch 10 is housed, normally closed switch 10 rises top cut-out circuit with the amplitude-variation hoisting of hoisting crane and warning circuit is connected the circuitry cuts on-off system of formation.
On the described rocker shaft 4 spring 6 is housed, one end of spring 6 is fixed on the spring pin 8, the other end of spring 6 is fixed on the mechanical rocker contacts 5, machinery rocker contacts 5 is withstanding under the effect of spring 6 on the rocking arm spacing 3, switch spacing 2 makes normally closed switch 10 closed energisings, when the steel rope of jumping out is pressed on the reel transmission shaft 12 and touches mechanical rocker contacts 5, mechanical rocker contacts 5 is moved forward throw off rocking arm spacing 3, under the effect of rocker shaft 4, normally closed switch 10 is oppositely moved disengagement switch spacing 2 backward, switch 10 is become by closed "on" position open off-position, make cable drum 11 stop vertical motion, report to the police in the operator's compartment of locomotive simultaneously, prompting driver steel rope 9 has been jumped out reel 11.
This whole device is fixed on the base plate 7, and base plate 7 is bolted on the retarder frame that hole 1 is fixed by bolts to reel, and has watertight cover to protect and waterproof.Under the normal condition, mechanical rocker contacts 5 is withstanding under the effect of spring 6 on the rocking arm spacing 3, and switch spacing 2 makes normally closed switch 10 closed energisings.When steel rope 9 is deviate from reel 11, the steel rope 9 of jumping out can be pressed on the reel transmission shaft 12 and touch mechanical rocker contacts 5, mechanical rocker head 5 is moved forward throw off rocking arm spacing 3, under the effect of rocker shaft 4, normally closed switch 10 is oppositely moved disengagement switch spacing 2 backward, switch spacing 2 had both been become open mode and had been made down circuitry by closure state, make cable drum 11 stop vertical motion, report to the police in the operator's compartment of locomotive simultaneously, prompting driver steel rope 9 has been jumped out reel 11.Even this moment, the driver blindly operated the luffing lifting, the reel 11 of steel rope can only have step-down operation and lift operations can not have been arranged, be that steel rope 9 can only be put rope and can be involute, steel rope 9 does not have involute just can not twine the axle accident, and down maneuver can only make steel rope 9 put rope and reset and be back to reel 11.After steel rope 9 resetted backrush cylinder 11, mechanical rocker contacts 5 was being pushed up back again under the effect of spring 6 on the rocking arm spacing 3, and switch spacing 2 makes normally closed switch 10 closed energisings, and unties immediately cutter and warning device, makes the hoisting crane enabling.
Take the CCH280WE type crane of Beijing hoisting crane machine plant production as embodiment, before this cutter is not installed, use go out groove twice 2 middle of the month, and badly damaged whole changing-breadth system.After having installed and used amplitude-changing drum switch of crane for preventing tripping, to have tested and used 7 wheat harvesting periods nearly, the damage accident of any luffing equipment does not occur in 6 hoisting cranes again.In use, according to driver's reflection the problem that steel rope is jumped out reel had occured repeatedly.Behind amplitude-changing drum job-hopping cutter on probation, skipping of steel wire rope goes out reel and comes into force and cut off reel and play lift operations and operator's compartment and report to the police, the driver hear report to the police after former preparation checking after the goods of slinging is put well, but lift operations is malfunctioning on the discovery luffing, with being about to carry out the locomotive inspection after goods lands, find that skipping of steel wire rope goes out reel.Touched amplitude-changing drum job-hopping cutter exactly because jump out the steel rope of reel, thereby cut off lift operations on the whole luffing, the driver greets the operating personnel to monitor steel rope immediately, and gets on the bus and take the bar operation, steel rope is automatically reset, and locomotive has recovered normal use immediately.
Claims (1)
1. amplitude-changing drum switch of crane for preventing tripping, this cutter is loaded on winding steel wire rope reel transmission shaft reel one side of reductor, rises with the amplitude-variation hoisting of hoisting crane that the top cuts off circuit and warning circuit is electrically connected, and it is characterized in that:
This cutter includes the base plate (7) that is bolted on the retarder frame that the hole is fixed on reel, be equipped with mechanical rocker shaft (4) at base plate (7), at rocker shaft (4) mechanical rocker contacts (5) is housed, on the machinery rocker contacts (5) normally closed switch (10) is housed, normally closed switch (10) rises top cut-out circuit with the amplitude-variation hoisting of described hoisting crane and warning circuit is connected the circuitry cuts on-off system of formation; Spring (6) is housed on the described rocker shaft (4), one end of spring (6) is fixed on the spring pin (8), the other end of spring (6) is fixed on the mechanical rocker contacts (5), machinery rocker contacts (5) is withstanding under the effect of spring (6) on the rocking arm spacing (3), and switch spacing (2) makes the closed energising of normally closed switch (10); When the steel rope of jumping out (9) is pressed in reel transmission shaft (12) upward and touches mechanical rocker contacts (5), mechanical rocker contacts (5) is moved forward throw off rocking arm spacing (3), under the effect of rocker shaft (4), normally closed switch (10) is oppositely moved disengagement switch spacing (2) backward, normally closed switch (10) is become by closed "on" position open off-position, make cable drum (11) stop vertical motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174302 CN202657889U (en) | 2012-04-20 | 2012-04-20 | Variable-amplitude winding drum groove-jumping cutting-off device of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220174302 CN202657889U (en) | 2012-04-20 | 2012-04-20 | Variable-amplitude winding drum groove-jumping cutting-off device of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202657889U true CN202657889U (en) | 2013-01-09 |
Family
ID=47452810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220174302 Expired - Fee Related CN202657889U (en) | 2012-04-20 | 2012-04-20 | Variable-amplitude winding drum groove-jumping cutting-off device of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202657889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829776A (en) * | 2016-12-15 | 2017-06-13 | 中冶宝钢技术服务有限公司 | The de- groove protection device of magnetic force transporter hoisting rope |
| CN109803912A (en) * | 2016-10-18 | 2019-05-24 | 三菱电机株式会社 | Riata for elevator and lift appliance |
-
2012
- 2012-04-20 CN CN 201220174302 patent/CN202657889U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109803912A (en) * | 2016-10-18 | 2019-05-24 | 三菱电机株式会社 | Riata for elevator and lift appliance |
| CN106829776A (en) * | 2016-12-15 | 2017-06-13 | 中冶宝钢技术服务有限公司 | The de- groove protection device of magnetic force transporter hoisting rope |
| CN106829776B (en) * | 2016-12-15 | 2019-11-08 | 中冶宝钢技术服务有限公司 | Magnetic force transporter winding steel wire rope is disengaged from the groove protective device |
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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: 20130109 Termination date: 20190420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |