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Vehicle-mounted crane limiting protection system and automobile crane

A truck crane and protection system technology, applied in the field of truck crane limit protection system and truck cranes, can solve the problems of low limit movement protection intelligence, potential safety hazards, and high operation requirements, so as to eliminate over-rolling or over-discharging problems. The effect of danger, increased intelligence, and reduced operational requirements

Pending Publication Date: 2019-07-02
HENAN SENYUAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a vehicle-mounted crane limit protection system and a truck crane, which are used to solve the problems that the existing vehicle crane limit protection has a low degree of intelligence, the operation requirements for releasing the limit protection are high, and there are potential safety hazards

Method used

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  • Vehicle-mounted crane limiting protection system and automobile crane
  • Vehicle-mounted crane limiting protection system and automobile crane
  • Vehicle-mounted crane limiting protection system and automobile crane

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] Such as image 3 The schematic diagram of the limit protection of a vehicle-mounted crane is shown, including the main hook height limit switch 1, the force limiter 2, the controller 3, the main three-turn protector 4, the auxiliary three-turn protector 5, the rotary joystick 6, the arm Telescopic joystick 7, luffing joystick 8, main hook telescopic joystick 9, auxiliary hook telescopic joystick 10, rotary joystick ultrasonic sensor 11, arm telescopic joystick ultrasonic sensor 12, luffing joystick ultrasonic sensor 13, main hook Telescopic joystick ultrasonic sensor 14, auxiliary hook telescopic ultrasonic sensor 15, main unloading valve 16, hook telescopic solenoid valve 17, three-turn protection solenoid valve 18, auxiliary hook height limit switch 19 and at least two rotary limit switches (Fig. not shown). The above-mentioned joystick is connecte...

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Abstract

The invention relates to a vehicle-mounted crane limiting protection system and an automobile crane. The vehicle-mounted crane limiting protection system comprises operating levers, ultrasonic sensorsfor detecting the action of the operating levers, a controller, a force limiter, an electromagnetic valve, a main hook height limiting switch, an auxiliary hook height limiting switch, a main three-ring protector, and an auxiliary three-ring protector. When the crane encounters faults such as overwinding, over-discharging and overload during hoisting operation, the controller limits the operatinglevers to act towards the dangerous direction by controlling the electromagnetic valve to be powered on and powered off. Due to the fact that the ultrasonic sensor is installed behind each operatinglever, the controller can judge the total working direction of the operating levers according to the ultrasonic sensors; when the operating levers act towards the dangerous direction, all the action electromagnetic valves are powered on to unload, and the crane can only act towards the safe direction. The intelligent release system for limiting protection is easy to operate, safe, reliable and high in intelligent degree.

Description

technical field [0001] The invention relates to a vehicle-mounted crane limit protection system and a truck crane, belonging to the field of truck crane safety protection. Background technique [0002] A car crane is a kind of crane installed on an ordinary car chassis or a special car chassis, and its driving cab is set separately from the lifting control room. After decades of development, China's truck cranes are becoming more and more mature, and they are becoming more and more intelligent while meeting the traditional basic functions. [0003] When the traditional truck crane encounters over-rolling, over-loading, overloading and excessive rotation of the main arm during the hoisting operation, the limit protection is triggered, and the unloading solenoid valve is unloaded by the electro-hydraulic system to stop the hoisting work to prevent dangers and accidents. At this time, the lifting operation operator needs to control the unloading, three-turn protection, telesco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C15/00
CPCB66C15/00
Inventor 孔庆珍盛铭真尹腾飞许红飞胡广勤王闯胡伟奇
Owner HENAN SENYUAN HEAVY IND
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