A safety master switch used on a tower crane
A technology of master switch and tower crane, applied in cranes, load hanging components, transportation and packaging, etc., can solve problems such as hidden dangers of tower crane shutdown operation, and achieve the effect of safety protection
Active Publication Date: 2017-11-03
浙江箭环电气有限公司
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The invention provides a safety master switch used on a tower crane, which solves the above-mentioned hidden dangers in the shutdown operation of the tower crane in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0016] Such as figure 1 As shown, a safety master switch used on a tower crane includes an upper handle 1, a flexible shaft pull rod 2, a lower handle 3, a telescopic device, an operating rod 5, a contact device 6 and a half shaft 7, and the lower end of the operating rod 5 is fixed On the half shaft 7, the upper end of the operating rod 5 is inserted into the upper handle 1, the lower handle 3 is connected to the operating rod 5 and is located at the lower part of the upper handle 1, and the flexible shaft pull rod 2 is installed on the operating rod to slide up and down. 5, a telescopic device is provided between the upper handle 1 and the lower handle 3, and the telescopic device includes a kidney hole 8 on the upper end of the operating rod, a round hole 9 on the upper end of the flexible shaft pull rod, an elastic cylindrical pin 10 and a spring 11, elastic The cylindrical pin 10 passes through the waist hole 8 and the round hole 9 to connect the operating rod 5 and the f...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a safety control switch used for a tower crane. The safety control switch comprises an upper handle, a flexible shaft pull rod, a lower handle, an expansion device, an operating rod, a contact device and an axle shaft. The lower end of the operating rod is fixed on the axle shaft. The upper end of the operating rod is sleeved by the upper handle. The lower handle can be connected onto the operating rod in an up-down sliding manner and is positioned at the lower part of the upper handle. The flexible shaft pull rod can be mounted inside the operating rod in an up-down sliding manner; the expansion device is arranged between the upper handle and the lower handle. The contact device is arranged at the lower end of the flexible shaft pull rod. The flexible shaft pull rod slides up and down so as to press a contact sliding block on a contact, so that the circuit of a tower crane system is controlled to be switched on or off. The contact device is arranged on the control switch of the tower crane, and is controlled to control the on-off of the whole circuit of the tower crane, and when a person is in a coma or meets with other external force uncontrollable factors, as long as a hand is released, a machine can be stopped whenever the operating rod is in any position, so that the safety protection is realized.
Description
technical field [0001] The invention relates to the technical field of tower crane equipment, in particular to a safety master switch used on a tower crane. Background technique [0002] General tower cranes are controlled by the master controller. When operating, lift the handle to manipulate the operating lever, and the tower crane will start to move. But to stop the tower crane, the operating lever must first be returned to its original position, that is, the operating lever Keep the vertical position; that is to say, during operation, that is, when the operating rod is at a certain angle to the vertical, the tower crane cannot be stopped, which will cause certain safety hazards, such as coma and death of the operator. At this time, due to the loss of consciousness, if the working tower crane cannot be stopped, serious consequences may occur. Contents of the invention [0003] The invention provides a safety master switch used on a tower crane, which solves the above-m...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/12B66C13/22B66C23/88
CPCB66C13/12B66C13/22B66C23/88
Inventor 楼玉芳庞美兴陈黎明
Owner 浙江箭环电气有限公司