Limiter safety detection method and device for tower crane
A technology of safety detection and limiter, which is applied in the direction of safety devices, transportation and packaging, load suspension components, etc., can solve the problems of non-following speed, lack of safety detection and protection, etc., and achieve the effect of safety protection
Active Publication Date: 2021-02-26
ZOOMLION HEAVY IND CO LTD +1
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[0005] The purpose of the present invention is to provide a safety detection method for the limiter of the tower crane in order to overcome the problem that the limiter is the safety limiter of each kinematic mechanism of the tower crane itself but lacks safety detection and protection in the prior art and the device, the limiter safety detection method and device for the tower crane can now monitor the abnormal conditions such as the broken shaft of the limiter, the speed does not follow, etc., thereby realizing the safety protection of the limiter itself and increasing the safety The reliability of the device enhances the safety level of tower crane operation
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[0021] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0022] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating relative importance, or implicitly indicating the quantity of indicated technical features. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of these features; "plurality" means two or more. The term "comprising" and any variations thereof mean non-exclusive inclusion, possible presence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.
[0023] Also,...
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The invention relates to the technical field of hoisting machinery, and discloses a limiter safety detection method and device for a tower crane. The method comprises the steps: carrying out angular displacement signal collection of a prime mover and a limiter in the tower crane to obtain an angular displacement signal I1 collected at the prime mover and an angular displacement signal I2 collectedat the limiter; judging whether angular displacement signal acquisition is normal or not according to the signal I1 and the signal I2; and under the condition that the angular displacement signal acquisition is normal, converting the angular displacement signal I2 acquired at the limiter into an electronic limiting signal L1, and further judging whether the limiter is normal or not by judging whether the electronic limiting signal L1 is synchronously triggered with a mechanical limiting signal L2 sent by the limiter or not. According to the invention, by increasing the real-time acquisition of the angular displacement signal of the limiter, and checking the angular displacement signal of the limiter and the acquired angular displacement signal of a motion mechanism mutually, abnormal conditions such as the shaft breakage fault of the limiter and non-following of the rotating speed are monitored, so that the safety protection of the limiter is further realized.
Description
technical field [0001] The invention relates to the technical field of hoisting machinery, in particular to a safety detection method and device for a stopper of a tower crane. Background technique [0002] Tower cranes (tower cranes for short) are widely used in the engineering field. The multifunctional stroke limiter (referred to as the limiter) is located on each movement mechanism of the tower crane, and is installed coaxially with the reel and motor of the movement mechanism. It is used to measure the rotation amount of the reel and motor of the movement mechanism and convert it into the angular displacement signal. The synchronous mechanical memory mechanism of the output shaft drives the cam, and when the angular displacement exceeds the amount, the cam triggers the micro switch, thereby realizing the functions of stroke control and limit limit. The limiter is the most important safety device for each motion mechanism of the tower crane. Its trouble-free operation ...
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IPC IPC(8): B66C13/46B66C15/00
CPCB66C13/46B66C15/00
Inventor 胡宇智王权郑捷
Owner ZOOMLION HEAVY IND CO LTD