Elevator and its traction rope tension detection device
A tension detection and traction rope technology, applied in tension measurement, transportation and packaging, elevators, etc., can solve the problems of inability to detect the tension difference of the traction rope and the inability to accurately detect the tension of the traction rope.
Active Publication Date: 2021-01-08
HITACHI LTD
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[0004] But in the elevator load detection device of above-mentioned patent publication, only a detection board 14 is set with respect to a plurality of rope head combinations (that is, a plurality of traction ropes), the displacement detected by the detection board 14 is a plurality of first The average amount of deformation of the spring 13, from this average amount of deformation can only calculate the average tension of a plurality of traction ropes
This load detection device cannot accurately detect the tension of each traction rope, and cannot detect the tension difference between the traction ropes
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[0017] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0018] figure 1 It is a schematic diagram briefly showing an embodiment of the elevator of the present invention. like figure 1 As shown, the elevator 100 includes a shaft 102 , a car 104 , a counterweight 106 , a traction machine 110 and a tension detection device 120 . The car 104 and the counterweight 106 are connected by a traction rope 108 , and the traction rope 108 is wound on the traction sheave of the traction machine 110 . The traction machine 110 drives the car 104 and the counterweight 106 up and down the hoistway 102 through the traction rope 108 . The tension detection device 120 detects the tension of the traction rope 108 .
[0019] exist figure 1 In the elevator shown, the tension detection device 120 is only installed at the end of the hoisting rope 108 on the side of the car 104, but this ...
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The invention relates to an elevator and a hoist rope tension detection device of the elevator. The hoist rope tension detection device of the elevator comprises detection plates (212) which are connected with pull rods (202) of a rope head combination of hoist ropes (108), transducers (214) which are used for detecting displacement of the detection plates, and a calculating device which is used for calculating tension of the hoist ropes according to detection results of the transducers. Each hoist rope is provided with one detection plate and one transducer. The hoist rope tension detection device further comprises a blocking mechanism which is used to prevent the detection plates from continuously moving so as to prevent the transducers from being damaged when the displacement of the detection plates reaches a predetermined limit value. Accordingly, when the hoist ropes extend to be longer or broken, which makes the pull rods and the detection plates move greatly and the displacementreach the predetermined limit value, the blocking mechanism can be used to prevent the detection plates from continuously moving, so that the detection plates are prevented from colliding with and further damage the transducers.
Description
technical field [0001] The invention relates to an elevator and its traction rope tension detection device. Background technique [0002] The rope end of the elevator traction rope is usually connected to the rope end assembly, and the rope end assembly is connected to the rope end plate through springs and other components to fix the rope end of the traction rope (see "Elevator Structure Principles and Installation and Maintenance", 5th edition, Page 37, edited by Chen Jiasheng, Machinery Industry Press, 2012.5). By detecting the deformation of the spring between the rope head combination and the rope head plate, the tension of the traction rope and the load it bears can be calculated. [0003] For example, Japanese Patent Publication No. 2003-2549 discloses an elevator load detection device. The device is provided with a detection plate 14 at the pull rod of the rope end assembly 2 . When the load of the elevator (the tension of the traction rope) changes, the deformati...
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IPC IPC(8): B66B5/00G01L5/04
Inventor 田代真树中山彻也金山泰裕西野克典
Owner HITACHI LTD