CN202988591U - Electric single beam crane control circuit - Google Patents

Electric single beam crane control circuit Download PDF

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Publication number
CN202988591U
CN202988591U CN 201220680230 CN201220680230U CN202988591U CN 202988591 U CN202988591 U CN 202988591U CN 201220680230 CN201220680230 CN 201220680230 CN 201220680230 U CN201220680230 U CN 201220680230U CN 202988591 U CN202988591 U CN 202988591U
Authority
CN
China
Prior art keywords
circuit
control box
cart
contactor
power supply
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
CN 201220680230
Other languages
Chinese (zh)
Inventor
马永红
赵雁俊
贾春霞
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.)
Chongqing Crane Works Co Ltd
Original Assignee
Chongqing Crane Works 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 Chongqing Crane Works Co Ltd filed Critical Chongqing Crane Works Co Ltd
Priority to CN 201220680230 priority Critical patent/CN202988591U/en
Application granted granted Critical
Publication of CN202988591U publication Critical patent/CN202988591U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an electric single beam crane control circuit. A protective circuit comprises a crane control box circuit and a horn control box circuit, wherein a total contactor K0 in the horn control box circuit is in series connection with a scram button JTA. The control circuit is characterized in that a power line which is used for supplying power for a cart running motor in the crane control box circuit is connected with the rear end of a contact of the total contactor K0 in the horn control box circuit; and when the scram button JTA is pressed down, the contact of the total contactor K0 is switched off, and the power supply of the cart motor is switched off, so that the cart stopping is realized. The control circuit is simple in structure, and can effectively switch off the power supply of the cart motor when a main contract of a forward contactor K1 or a reverse contactor K2 of the cart is bonded, so that the security of the system operation is fully guaranteed.

Description

A kind of mono beam overhead crane control circuit
Technical field
The utility model relates to a kind of control circuit.
Background technology
The lifting mechanism of existing mono beam overhead crane all adopts electric block, and electric block is a finished product of cucurbit manufacturer production, just can use separately after energising.Establish total contactless switch, voltage transformer, cucurbit lifting contactless switch, cucurbit operation conversing contactor in the electric cabinet that electric block carries.Main breaker, the positive contactor K1 of cart operation, counter-rotating contactless switch K2 are set in the control box of hoisting crane.After the control box of the power supply of whole hoisting crane access hoisting crane, the power supply of cucurbit the main breaker in the control box of hoisting crane, 1L1,1L2,1L3 access.As shown in Figure 2, pocket torch door is contained on cucurbit, reserves action button 5QA, the 6QA of cart on pocket torch door.Car load control loop voltage is provided by the voltage transformer in the cucurbit control box, and the control of cart need to be drawn from the cucurbit control box by cable, as in Fig. 1 and Fig. 2 14,, shown in 16,1.
Start and stop element all at the cucurbit control box.In the normal situation of contactless switch, when needing sudden stop, press the scram button JTA on pocket torch door, disconnect total contactless switch K0 coil power, the control loop dead electricity, each mechanism's conversing contactor disconnects, and the motor outage stops.
But this kind structure easily causes following problem:
(1) because conversing contactor is wanted frequent adhesive, disconnection, the contact curent change is large, and is easily bonding.When the positive contactor K1 of cart or counter-rotating contactless switch K2 main contact bonding, even take scram button, disconnect control loop voltage, cart control contactor main contact can't separate.Large mechanism of car will be walked towards a direction always.
(2) if the operating personal reflection rapidly, is controlled the circuit breaker of hoisting crane power supply in the workshop switch box of leaving behind, the power supply of the hoisting crane that breaks, hoisting crane just can stop.If but the operating personal reaction is slow or workshop switch box distance, the power supply of hoisting crane has little time to break, hoisting crane has been walked far, if hang lift heavy thing and highly very low on suspension hook, the consequences such as wayside equipment, shock car bumper device, damage factory building will occur during this time hurting sb.'s feelings, breaking, can occur that even car bumper is hit rotten rear hoisting crane and run out of the situation that track falls down.
The utility model content
It is a kind of after cart forward or reverse main noddle on contactor is bonding that the purpose of this utility model is to provide, and the scram button of pressing pocket torch door just can disconnect the cargo motor power supply, the mono beam overhead crane control circuit that cart is stopped.
To achieve these goals, by the following technical solutions: a kind of mono beam overhead crane control circuit, described circuit comprises crane control case circuit and cucurbit control box circuit, wherein in cucurbit control box circuit, total contactless switch K0 connects with scram button JTA, it is characterized in that: in crane control case circuit in the power lead of cart operation motor power supply and cucurbit control box always the contact rear end of contactless switch K0 be connected, when pressing scram button JTA, total contactless switch K0 contact disconnects, the cargo motor power supply that breaks is realized stopping.
The utility model is simple in structure, can actv. closes the cargo motor power supply at the positive contactor K1 of cart or counter-rotating contactless switch K2 main contact when bonding, has fully ensured system's Operation safety.
Description of drawings
Fig. 1 is crane control case schematic circuit diagram in prior art;
Fig. 2 is cucurbit control box schematic circuit diagram in prior art;
Fig. 3 is crane control case schematic circuit diagram in the utility model;
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further:
As shown in Figure 3, a kind of mono beam overhead crane control circuit, described circuit comprises crane control case circuit and cucurbit control box circuit, wherein in cucurbit control box circuit, total contactless switch K0 connects with scram button JTA, in crane control case circuit in the power lead of cart operation motor power supply and cucurbit control box always the contact rear end of contactless switch K0 be connected, be that in X11, X12 and X13 and the Fig. 3 in Fig. 2, X11, X12 are connected with X13, when pressing scram button JTA, total contactless switch K0 contact disconnects, the cargo motor power supply that breaks is realized stopping.

Claims (1)

1. mono beam overhead crane control circuit, described circuit comprises crane control case circuit and cucurbit control box circuit, wherein in cucurbit control box circuit, total contactless switch K0 connects with scram button JTA, it is characterized in that: in crane control case circuit in the power lead of cart operation motor power supply and cucurbit control box always the contact rear end of contactless switch K0 be connected, when pressing scram button JTA, total contactless switch K0 contact disconnects, and the cargo motor power supply that breaks is realized stopping.
CN 201220680230 2012-12-11 2012-12-11 Electric single beam crane control circuit Expired - Fee Related CN202988591U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220680230 CN202988591U (en) 2012-12-11 2012-12-11 Electric single beam crane control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220680230 CN202988591U (en) 2012-12-11 2012-12-11 Electric single beam crane control circuit

Publications (1)

Publication Number Publication Date
CN202988591U true CN202988591U (en) 2013-06-12

Family

ID=48559790

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220680230 Expired - Fee Related CN202988591U (en) 2012-12-11 2012-12-11 Electric single beam crane control circuit

Country Status (1)

Country Link
CN (1) CN202988591U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104444828A (en) * 2014-12-10 2015-03-25 重庆起重机厂有限责任公司 Safety control system of suspended beam crane
CN104692258A (en) * 2015-03-18 2015-06-10 周磊 Single-beam overhead crane
CN104692257A (en) * 2015-03-18 2015-06-10 周磊 Single-beam overhead crane
CN105923547A (en) * 2016-06-29 2016-09-07 国家电网公司 Multi-main-girder frame type lifting equipment
CN108466935A (en) * 2018-02-11 2018-08-31 江苏省特种设备安全监督检验研究院 Urgent power-off switch power down function test circuit and its method of inspection

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104444828A (en) * 2014-12-10 2015-03-25 重庆起重机厂有限责任公司 Safety control system of suspended beam crane
CN104444828B (en) * 2014-12-10 2016-07-13 重庆起重机厂有限责任公司 A kind of safety control system of overhead crane with carrier-beam
CN104692258A (en) * 2015-03-18 2015-06-10 周磊 Single-beam overhead crane
CN104692257A (en) * 2015-03-18 2015-06-10 周磊 Single-beam overhead crane
CN105923547A (en) * 2016-06-29 2016-09-07 国家电网公司 Multi-main-girder frame type lifting equipment
CN108466935A (en) * 2018-02-11 2018-08-31 江苏省特种设备安全监督检验研究院 Urgent power-off switch power down function test circuit and its method of inspection

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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: 20130612

Termination date: 20181211

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