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Crane

A technology for cranes and driving motors, applied in the direction of load hanging components, transportation and packaging, etc., can solve problems such as production accidents, and achieve the effect of improving safety

Inactive Publication Date: 2014-02-05
HENAN JIANGHE HEAVY IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the judgment of the working state of the crane is completely based on experience. When the operator misjudges the working state of the crane due to lack of experience or other human factors, it may cause production accidents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] figure 1 It is a structural diagram of a crane disclosed in the embodiment of this application.

[0034] Such as figure 1 As shown, the crane disclosed in this embodiment includes a mechanical system (not shown) and a control system, and the control system includes an operating device 10, a processing device 20, a motor control device 30, a monitoring device 40 and a display device 50, wherein: the processing device 20 They are respectively connected with the operating device 10 , the motor control device 30 , the monitoring device 40 and the display device 50 .

[0035] The operating device 10 is used to receive control commands issued by the operator.

[0036] The processing device 20 is used for outputting a motor selection command and a forward and reverse command according to the control command.

[0037] The mechanical system of the crane includes multiple driving motors, which are used to drive the moving parts of the mechanical system such as beams, trolleys,...

Embodiment 2

[0050] figure 2 It is a structural diagram of a crane disclosed in another embodiment of the present application.

[0051] Such as figure 2 As shown, this embodiment adds a motor protection device 60 on the basis of the previous embodiment, which is used to protect the input power of the driving motor when a phase loss occurs.

[0052] The motor protection device 60 includes a phase loss monitoring unit 61 and a circuit breaking unit 62 .

[0053] The forward and reverse controller of the crane disclosed in this embodiment is provided with two sets of solid state relays for outputting three-phase power supplies with different phase sequences to the driving motor, so as to realize the forward rotation or reverse rotation control of the driving motor. Each group of solid-state relays includes three solid-state relays. The three solid-state relays sometimes have inconsistent actions due to quality or aging. It will burn out the drive motor.

[0054] The lack of phase monito...

Embodiment 3

[0058] image 3 A structure diagram of a crane is disclosed as yet another embodiment of the present application.

[0059] Such as image 3 As shown, the present embodiment adds a switch controller 70 on the basis of the previous embodiment.

[0060] The switch controller 70 is connected with the processing device 20, and is used for receiving control commands when the operating device 10 fails, as a backup of the operating device 10, to prevent the crane from going out of control when the operating device 10 fails.

[0061] In any of the above embodiments, all driving motors of the mechanical device are provided with rotor current limiting resistors (not shown). The rotor current-limiting resistor is connected to the rotor coil of the driving motor, so that the driving motor can start smoothly, and the impact on the power grid can be reduced when the driving motor starts. The rotor current limiting resistor can be removed automatically or manually after the speed reaches a...

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PUM

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Abstract

The application discloses a crane. The crane comprises a mechanical system and a control system, wherein the control system comprises an operating device, a processing device, a motor control device, a monitoring device and a display device; the operating device is used for receiving a control command, and the processing device is used for outputting a motor selecting command and a positive and negative revolution command according to the control command; the motor control device is used for selecting a driving motor of the mechanical system according to a motor selecting command and can control a driving motor to do positive revolution or negative revolution according to the positive and negative revolution command, and the monitoring device is used for detecting the operation state of the crane and outputting the information of the operation state; the display device is used for receiving and displaying the operation state information. According to the technical scheme, the monitoring device of the control system can detect the operation state of the crane and outputs the information of the operation state, and the operation state information is displayed through the display device; an operator intuitively masters the operation state of the crane through the display device, and judgment on the operation state of the crane does not need to be carried out by virtue of experience.

Description

technical field [0001] The present application relates to the technical field of lifting, and more specifically, relates to a crane. Background technique [0002] During the operation of the existing crane, the operator needs to judge the working state of the crane, and then operate the crane according to the judgment result. However, the judgment of the working state of the crane is completely based on experience. When the operator misjudges the working state of the crane due to lack of experience or other human factors, it may cause production accidents. Therefore need badly a kind of crane that can show working state, so that operator needn't rely on experience to judge its working state. Contents of the invention [0003] In view of this, the present application provides a crane capable of displaying its working state, enabling operators to judge its working state without relying on experience, so as to improve the safety of operation. [0004] In order to achieve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/22B66C13/16
Inventor 李广顺张慧王晓飞
Owner HENAN JIANGHE HEAVY IND GROUP