Extension protecting structure for hoisting rope of elevator
A protection structure, elevator traction technology, applied in elevators, transportation and packaging, etc., can solve problems such as many human factors, and achieve the effect of avoiding contact and avoiding elevator accidents.
Active Publication Date: 2015-04-08
SJEC CORP
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Problems solved by technology
Under normal circumstances, the length of the traction rope must be calibrated after a new ladder has been put into use for a period of time. The traditional method is to use the maintenance personnel to observe in the well or rely on their own experience to judge whether it is necessary to calibrate. This method is too artificial. Many, it cannot fundamentally solve the elevator accident caused by the over-extension of the traction rope, which causes the buffer on the counterweight side to be triggered by collision
Method used
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[0011] The structure of the present invention will be further described below in conjunction with the accompanying drawings.
[0012] see Figure 1-4 As shown, an elevator traction rope extension protection structure includes a traction rope 1, a car 8, a counterweight 4, a counterweight side buffer 6 arranged on the bottom pit of the elevator, and a shaft fixed on the elevator shaft through the elevator guide rail. The upper limit switch 3 and the lower limit switch 5, the switch plate 2 arranged on the outside of the counterweight 4, the upper limit switch 3 and / or the lower limit switch 5 are connected in series in the control loop of the elevator to control the on-off of the control loop. exist Figure 1-2 Among them, the traction ratio of the elevator is 2:1. Specifically, one end of the traction rope 1 is fixed, and then it goes down around the sheave 7 of the counterweight 4, and then goes up around the traction sheave 9 of the traction machine. , Then go around the s...
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The invention discloses an extension protecting structure for a hoisting rope of an elevator. When the hoisting rope is in a normal state (namely does not overextend), a switch plate on a counterweight does not act together with a lower limit switch but acts together with an upper limit switch every time the switch plate reaches a top layer, and a control loop of the elevator is turned on at this time to ensure that the elevator runs normally. After the hoisting rope overextends, the lower limit switch acts and the upper limit switch does not act to ensure that the control loop of the elevator is turned off and the elevator is stopped, so that elevator accidents caused by overextension of the hoisting rope are fundamentally avoided, and a buffer on a counterweight side is prevented from being touched.
Description
technical field [0001] The invention relates to an extension protection structure of an elevator traction rope. Background technique [0002] When the elevator installed in the closed shaft is first put into use, the extension of the traction rope is a problem that bothers the maintenance personnel. As we all know, the extension of the traction rope has no effect on the car side, because there is an elevator leveling device, the car will be flush with the landing door sill every time the elevator stops, so for the entire traction rope, its extension Finally, it will be reflected between the counterweight and the buffer on the counterweight side. The greater the extension of the traction rope, the smaller the distance between the counterweight and the buffer on the counterweight side. Especially in elevators with high hoisting heights or elevators with high roping ratio (traction ratio), the extension of the traction rope should be given sufficient attention. Under normal c...
Claims
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IPC IPC(8): B66B5/00
Inventor 钱松陶宪德
Owner SJEC CORP