CN203781679U - Grab bucket crane with remote positioning and weighing systems - Google Patents

Grab bucket crane with remote positioning and weighing systems Download PDF

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Publication number
CN203781679U
CN203781679U CN201420144564.8U CN201420144564U CN203781679U CN 203781679 U CN203781679 U CN 203781679U CN 201420144564 U CN201420144564 U CN 201420144564U CN 203781679 U CN203781679 U CN 203781679U
Authority
CN
China
Prior art keywords
contactless switch
grab bucket
weighing
start button
positioning
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
Application number
CN201420144564.8U
Other languages
Chinese (zh)
Inventor
魏学孔
朱二挡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GANSU ZHAOJIN PRECIOUS METALS SMELTING CO., LTD.
Original Assignee
Anhui Hengyuan Coal Electricity Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Hengyuan Coal Electricity Group Co Ltd filed Critical Anhui Hengyuan Coal Electricity Group Co Ltd
Priority to CN201420144564.8U priority Critical patent/CN203781679U/en
Application granted granted Critical
Publication of CN203781679U publication Critical patent/CN203781679U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a grab bucket crane with remote positioning and weighing systems. After an anticlockwise rotation starting button is pressed down, a grab bucket crane circuit is correspondingly switched off, so that a first contactor is powered off to be released; a main contact of the first contactor is switched off, so that power of a motor of the positioning and weighing grab bucket is cut off; the motor of the positioning and weighing grab bucket stops slowly because of power failure; meanwhile, the anticlockwise rotation starting button is closed, and an often-closed contact of the first contactor is closed, so that a second contactor is electrically closed and self-locked. The utility model further discloses a control circuit of the grab bucket crane with the remote positioning and weighing systems; the remote positioning system and the weighing system both belong to the prior art; compared with the prior art, the grab bucket crane has the characteristics that due to the interlocking function, the control circuit is safe and reliable, and the problem of short circuit caused by strong electric arc is prevented; the circuit is simple and practical in structure and is favorable for popularization and use.

Description

A kind of grab crane with long range positioning and weighing system
Technical field
The utility model relates to a kind of control circuit of long range positioning hoisting crane, relates in particular to a kind of grab crane with long range positioning and weighing system.
Background technology
Hoisting crane belongs to the one of elevator machinery, be a kind ofly circulate, the machinery of intermittent moment.A working cycle comprises: load-engaging device is mentioned article from getting thing, is then moved horizontally to appointed place and falls article, then carries out counter motion, makes load-engaging device reposition, to circulate next time.And grab crane of the prior art has had long range positioning and weighing system, and this class grab crane adopts compound button to carry out interlock protection conventionally, in real work, due to the long term of load short circuits or large electric current, the main contact of contactless switch likely " is freezed " together by strong electric arc; Or because the mechanism of contactless switch is malfunctioning, armature is blocked and always in attracting state, if in this case, if another contactless switch just in time electric adhesive, will there is power supply short circuit fault, reality is unreliable.
Summary of the invention
The purpose of this utility model is that a kind of grab crane with long range positioning and weighing system will be provided.
For achieving the above object, the utility model is implemented according to following technical scheme:
The utility model comprises power circuit and control circuit, described control circuit comprises the first contactless switch, the second contactless switch, forward start button, thermal relay, reversion start button and stop button, described the first contactless switch is connected in the first series loop, described the second contactless switch is connected in the second series loop, after described the first series loop is connected in parallel with described the second series loop, is connected respectively with the circuit two ends that form after stop button series connection with two live wires; Described the first series loop is: after the open contact parallel connection of described forward start button and described the first contactless switch, connect respectively with normally closed contact and described first contactless switch of described reversion start button, described the second contactless switch; Described the second series loop is: after the open contact parallel connection of described reversion start button and described the second contactless switch, connect respectively with normally closed contact and described second contactless switch of described forward start button, described the first contactless switch, the dynamic circuit breaker contact point of described thermal relay is connected with described stop button, and two power inputs of described control circuit are all connected in series with fuse.
The utility model is a kind of control circuit of the grab crane with long range positioning and weighing system, long range position determination system level weighing system is prior art, the utility model not only has original long range positioning and function of weighing, compared with prior art, feature of the present utility model is to have interlock function, uses control circuit safety and reliability, and can prevent the caused short circuit problem of strong electric arc, circuit structure is simple and practical, is conducive to promote the use of.
Brief description of the drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described, is used for explaining the utility model in illustrative examples and the explanation of this utility model, but not as to restriction of the present utility model.
As shown in Figure 1: control circuit described in the utility model comprises the first contactless switch KM1, the second contactless switch KM2, forward start button SB2, thermal relay FR, reversion start button SB3 and stop button SB1, the first contactless switch KM1 is connected in the first series loop, the second contactless switch KM2 is connected in the second series loop, after described the first series loop is connected in parallel with described the second series loop, is connected respectively with the circuit two ends that form after stop button SB1 series connection with two live wires; Described the first series loop is: after the open contact parallel connection of forward start button SB2 and described the first contactless switch KM1, connect respectively with normally closed contact and the first contactless switch KM1 of described reversion start button SB3, the second contactless switch KM2; Described the second series loop is: after the open contact parallel connection of reversion start button SB3 and the second contactless switch KM2, connect respectively with normally closed contact and the second contactless switch KM2 of forward start button SB2, the first contactless switch KM1, the dynamic circuit breaker contact point of thermal relay FR is connected with stop button SB1; Two power inputs of described control circuit are all connected in series with fuse FU.
As shown in Figure 1: the SB2-1 that in figure, forward start button SB2 is corresponding and SB3-1 corresponding to reversion start button SB3 are compound button, power turn-on switch Q, press forward start button SB2, its corresponding normally closed contact SB2-1 disconnects, and makes the second contactless switch KM2 must not electricity; Forward start button SB2 connects, and makes the first contactless switch KM1 obtain electric adhesive self-locking, and its main contact closure, switches on power, and the electrical motor M forward of positioning weighing grab crane starts running; In this situation, the normally closed contact KM11-2 of the first contactless switch KM1 disconnects, and further ensures that the second contactless switch KM2 must not electricity.In the time needing the electrical motor M reversion of positioning weighing grab crane, press reversion start button SB3, its corresponding SB3-1 disconnects, the first contactless switch KM1 power-off is discharged, the main contact KM1-1 of the first contactless switch KM1 disconnects, excise the power supply of the electrical motor M of positioning weighing grab crane, the electrical motor M power-off of positioning weighing grab crane and slowly stopping, the start button SB3 closure of simultaneously reversing, again because the normally closed contact KM1-2 of the first contactless switch KM1 recovers closed, make the second contactless switch KM2 obtain electric adhesive self-locking, its main contact closure, the two-phase power supply of the electrical motor M of positioning weighing grab crane is exchanged, the electrical motor M reverse starting running of positioning weighing grab crane, in this situation, the normally closed contact KM2-2 of KM2 disconnects, and guarantees the first contactless switch KM1 power-off, as wants the electrical motor M of positioning weighing grab crane to stop, and only need to press stop button SB1.The utility model feature is easy to operate, can directly carry out positive and negative operation, not only safely but also reliably, therefore can be widely used in the various manufacturing machines of continuous reversible running.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technical solution of the utility model, within all falling into protection domain of the present utility model.

Claims (1)

1. one kind has the grab crane of long range positioning and weighing system, it is characterized in that: comprise power circuit and control circuit, described control circuit comprises the first contactless switch, the second contactless switch, forward start button, thermal relay, reversion start button and stop button, described the first contactless switch is connected in the first series loop, described the second contactless switch is connected in the second series loop, after described the first series loop is connected in parallel with described the second series loop, is connected respectively with the circuit two ends that form after stop button series connection with two live wires; Described the first series loop is: after the open contact parallel connection of described forward start button and described the first contactless switch, connect respectively with normally closed contact and described first contactless switch of described reversion start button, described the second contactless switch; Described the second series loop is: after the open contact parallel connection of described reversion start button and described the second contactless switch, connect respectively with normally closed contact and described second contactless switch of described forward start button, described the first contactless switch, the dynamic circuit breaker contact point of described thermal relay is connected with described stop button, and two power inputs of described control circuit are all connected in series with fuse.
CN201420144564.8U 2014-03-25 2014-03-25 Grab bucket crane with remote positioning and weighing systems Expired - Fee Related CN203781679U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420144564.8U CN203781679U (en) 2014-03-25 2014-03-25 Grab bucket crane with remote positioning and weighing systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420144564.8U CN203781679U (en) 2014-03-25 2014-03-25 Grab bucket crane with remote positioning and weighing systems

Publications (1)

Publication Number Publication Date
CN203781679U true CN203781679U (en) 2014-08-20

Family

ID=51317888

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420144564.8U Expired - Fee Related CN203781679U (en) 2014-03-25 2014-03-25 Grab bucket crane with remote positioning and weighing systems

Country Status (1)

Country Link
CN (1) CN203781679U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105438976A (en) * 2015-12-30 2016-03-30 上海佩纳沙士吉打机械有限公司 Intelligent monitoring system for hydraulic grab
CN112217422A (en) * 2020-11-20 2021-01-12 中船华南船舶机械有限公司 Control method of multi-motor electric control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105438976A (en) * 2015-12-30 2016-03-30 上海佩纳沙士吉打机械有限公司 Intelligent monitoring system for hydraulic grab
CN112217422A (en) * 2020-11-20 2021-01-12 中船华南船舶机械有限公司 Control method of multi-motor electric control system
CN112217422B (en) * 2020-11-20 2022-05-17 中船华南船舶机械有限公司 Control method of multi-motor electric control system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: GANSU ZHAOJIN PRECIOUS METALS SMELTING CO., LTD.

Free format text: FORMER OWNER: ANHUI HENGYUAN COAL-ELECTRICITY GROUP CO., LTD.

Effective date: 20150619

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150619

Address after: In the 730500 Gansu circular economy industrial park Lintao County of Dingxi Province

Patentee after: GANSU ZHAOJIN PRECIOUS METALS SMELTING CO., LTD.

Address before: 234000 Anhui Province, Huaibei City Xiangshan District Anhui Hengyuan coal Limited by Share Ltd

Patentee before: Anhui Hengyuan Coal-Electricity Group Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140820

Termination date: 20160325

CF01 Termination of patent right due to non-payment of annual fee