CN202214164U - Summit-prevention device for grab bucket of bridge crane - Google Patents
Summit-prevention device for grab bucket of bridge crane Download PDFInfo
- Publication number
- CN202214164U CN202214164U CN2011203198088U CN201120319808U CN202214164U CN 202214164 U CN202214164 U CN 202214164U CN 2011203198088 U CN2011203198088 U CN 2011203198088U CN 201120319808 U CN201120319808 U CN 201120319808U CN 202214164 U CN202214164 U CN 202214164U
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- China
- Prior art keywords
- grab bucket
- infrared ray
- control
- intermediate relay
- near switch
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- Expired - Fee Related
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Abstract
The utility model relates to a summit-prevention device for a grab bucket of a bridge crane, which is characterized in that an infrared approach switch is ensured to be arranged on one side edge of a moving trolley in the walking direction, and is installed and fixed in a way that the infrared approach switch forms included-angle inclination with the bottom surface of the trolley. The infrared approach switch, an intermediate relay and an audible and visual alarm form an automatic grab bucket control alarm circuit which is then connected together with the original control circuit of a starting/stopping and hoisting mechanism control device. The device can solve the problem that when the grab bucket are lifted to the limit position, a starting/stopping and hoisting mechanism can stop working immediately, and the grab bucket does not receive a lifting command any more, and can only be opened and lifted down. Simultaneously the audible and visual alarm reminds a driver that the grab bucket is positioned at the limit part, so that the grab bucket does not collide with a main bridge of the crane, the grab bucket and the main bridge of the carne are not damaged, and the safe operation of the device is ensured.
Description
Technical field
The utility model relates to a kind of grab bucket erosion control ejection device of crane in bridge type.But the driving driver operation prevents the accident of rushing to summit of grabbing bucket through this device actv..
Background technology
The spacing most employing mechanical type rising limiting device that rises of the grab bucket of bridge grabbing crane at present; To making at every turn more during change steel rope; All need adjust mechanical type rising limiting device, through adjustment back, mechanical type rising limiting device wear damage can occur, the limiting device adjusting accuracy is descended or ineffective problem several times.When grab bucket rises to certain altitude, the driving driver for the moment general idea carelessness in time manually do not stop grab bucket and rise; And grab bucket when rising to extreme position, the mechanical type rising limiting device that shields not action in time grab bucket is risen stop, grab bucket will rise always the master bridge that collides crane in bridge type, to cause grab bucket to break with master bridge impaired.
Summary of the invention
The purpose of the utility model is to provide a kind of grab bucket erosion control ejection device.When solution rose to extreme position in grab bucket, switching mechanism and lifting mechanism can quit work immediately automatically, and the grab bucket order of no longer accept rising, the grab bucket operation of can only opening and descend.Simultaneously combined aural and visual alarm reminds the driver that grab bucket has been in end position, and the master bridge, the grab bucket of having protected hoisting crane and the master bridge that grab bucket are not rushed to summit collide hoisting crane are not impaired, guarantee equipment safety operation.
The technical scheme of the utility model is: a kind of grab bucket erosion control ejection device of crane in bridge type; Comprise that infrared ray is near switch, intermediate relay, combined aural and visual alarm; It is characterized in that: infrared ray is formed grab bucket automatic control alarm circuit near switch, intermediate relay, combined aural and visual alarm, is bound up with original switching, lifting mechanism control setup control circuit again.
The position that described infrared ray is installed near switch must and be that infrared ray installs and fixes near the angle inclination that switch and dolly bottom surface will form certain angle at a side of the direction of travel of travelling car; The numerical value that slanted angle is installed is to calculate with the length of travelling car and get through measuring vertical distance that grab bucket rises to end position and dolly; When grab bucket rises to end position; The infrared ray oblique fire that the infrared ray of tilt installing penetrates near switch is to the top of grab bucket, and the distance value of the range finding of infrared ray oblique fire also is to calculate with the length of travelling car and get through measuring vertical distance that grab bucket rises to end position and dolly.
Described grab bucket erosion control ejection device circuit is following with being connected of former electric control circuit: infrared ray inserts the SQ2 normally closed contact near switch S Q1 normally closed contact and inserts intermediate relay KA1 coil again; One group of normal opened contact KA1 of intermediate relay KA1 inserts combined aural and visual alarm; Two groups of normally closed contacts of intermediate relay KA1 insert X001, the X012 among the former control PLC respectively, and grab bucket automatic control alarm circuit power inserts primary circuit 220V power supply.
When grab bucket rises to end position; The testing circuit action of grab bucket automatic control alarm circuit; And break off hoist electrical motor rising contact and the circuit-closing contacts that opens and closes electrical motor, and lifting mechanism and switching mechanism are quit work immediately, combined aural and visual alarm reminds the driver that grab bucket has been in end position simultaneously; The order of rising is no longer accepted in grab bucket; Can only down move, grab bucket not rushed to summit collide master bridge, the grab bucket of having protected hoisting crane and the master bridge of hoisting crane not impaired, guarantee the long period safe operation of overhead traveling crane machine equipment.
Description of drawings
Fig. 1: grab bucket erosion control ejection device control program figure;
The terminal connection diagram of Fig. 2: PLC;
Fig. 3: grab bucket automatic control alarm schematic circuit diagram.
The specific embodiment
Grab bucket erosion control ejection device control program figure in Fig. 1; When manual control handle is opened the rising operation of the closed back of four rope grab control setup grab bucket; Open closed frequency converter operation 2 of grab bucket control automatic erosion control ejection device 1 output control startup grab bucket and grab bucket rising frequency converter operation 3, open and open and close electrical motor 4 and 5 operations of elevating motor car.When grab bucket rose to end position, infrared ray was passed to intermediate relay near on-off signal, and it is simultaneously out of service with elevating motor 5 that control opens and closes electrical motor 4.
Grab bucket erosion control ejection device mode 1 in Fig. 2 and Fig. 3, the driver rises and moves at the closed back of will grab bucket, when grab bucket rises to end position; To signal, SQ1 or SQ2 junction closure are after the charged adhesive of intermediate relay KA1 near inductive switching for infrared ray; The closed combined aural and visual alarm of connecting of normal opened contact KA1; Two groups of normally closed contacts of KA1 are serially connected in the closed LKz (X012) of control grab bucket respectively and control on LKS (X001) signal that rises of grabbing bucket, and after the charged adhesive of KA1, X001, X012 point on the PLC are broken off simultaneously; Make its switching electrical motor and elevating motor out of service immediately, combined aural and visual alarm sends 40 decibels chimes of doom and alarm lamp flash red light simultaneously.This control process finishes.
Grab bucket erosion control ejection device mode 2, after grab bucket rises to end position, infrared ray near inductive switching less than signal; SQ1 and SQ2 contact break off; Intermediate relay KA1 coil losing electricity breaks off, and contact KA1 breaks off combined aural and visual alarm, after intermediate relay KA1 coil losing electricity breaks off; X001, X012 on the PLC are connected simultaneously, cause grab bucket mechanism restoring running normal.This control process finishes.
Claims (2)
1. the grab bucket erosion control ejection device of a crane in bridge type; Comprise that infrared ray is near switch, intermediate relay, combined aural and visual alarm; Side at travelling car installs infrared ray additional near switch; It is characterized in that: infrared ray is installed in a side of travelling car direction of travel near switch; Infrared ray tilts to install and fix near switch and dolly bottom surface, and infrared ray is formed grab bucket automatic control alarm circuit near switch, intermediate relay, combined aural and visual alarm, is bound up with original switching, lifting mechanism control setup control circuit again.
2. grab bucket erosion control ejection device according to claim 1; It is characterized in that: grab bucket erosion control ejection device circuit is following with being connected of former electric control circuit: infrared ray inserts the SQ2 normally closed contact near switch S Q1 normally closed contact and inserts intermediate relay KA1 coil again; One group of normal opened contact KA1 of intermediate relay KA1 inserts combined aural and visual alarm; Two groups of normally closed contacts of intermediate relay KA1 insert X001, the X012 among the former control PLC respectively, and grab bucket automatic control alarm circuit power inserts primary circuit 220V power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203198088U CN202214164U (en) | 2011-08-30 | 2011-08-30 | Summit-prevention device for grab bucket of bridge crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203198088U CN202214164U (en) | 2011-08-30 | 2011-08-30 | Summit-prevention device for grab bucket of bridge crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202214164U true CN202214164U (en) | 2012-05-09 |
Family
ID=46013430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203198088U Expired - Fee Related CN202214164U (en) | 2011-08-30 | 2011-08-30 | Summit-prevention device for grab bucket of bridge crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202214164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947865A (en) * | 2019-12-25 | 2020-04-03 | 昆山孚思格机电科技有限公司 | Automobile suspension spring direction recognizing method |
| CN113003450A (en) * | 2021-03-31 | 2021-06-22 | 广西建工集团建筑机械制造有限责任公司 | Tower crane hook anti-ejection soft limit control system and control method |
-
2011
- 2011-08-30 CN CN2011203198088U patent/CN202214164U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947865A (en) * | 2019-12-25 | 2020-04-03 | 昆山孚思格机电科技有限公司 | Automobile suspension spring direction recognizing method |
| CN110947865B (en) * | 2019-12-25 | 2022-03-08 | 昆山孚思格机电科技有限公司 | Automobile suspension spring direction recognizing method |
| CN113003450A (en) * | 2021-03-31 | 2021-06-22 | 广西建工集团建筑机械制造有限责任公司 | Tower crane hook anti-ejection soft limit control system and control method |
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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: 20120509 Termination date: 20200830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |