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Elevator apparatus

A technology of elevators and driving devices, which is applied in transportation, packaging, elevators, etc., and can solve problems such as failure to detect elevator abnormalities and counterweights that cannot be lowered normally

Inactive Publication Date: 2009-07-15
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for example, if there is an obstacle protruding in the hoistway for some reason, and the counterweight collides with the obstacle, so that the counterweight cannot be lowered normally, in this case, since the abnormal speed cannot be detected, it cannot Detect abnormalities in the elevator

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0014] figure 1 It is a block diagram showing the elevator apparatus according to Embodiment 1 of the present invention. In the drawing, on the upper part of the hoistway 1 are provided: a traction machine 2 as a driving device; and a deflector pulley 3 arranged at a distance from the traction machine 2 . The hoisting machine 2 has: a drive device body 4 including a motor; and a drive sheave 5 that is rotated by the drive device body 4 . A main rope 8 for suspending the car 6 and the counterweight 7 is wound around the drive sheave 5 and the deflection sheave 3 . The car 6 and the counterweight 7 are driven up and down in the hoistway 1 in directions opposite to each other by the drive of the hoisting machine 2 . In addition, a control device 9 for controlling the operation of the elevator is installed in the hoistway 1 .

[0015] An emergency stop device 10 for preventing the car 6 from falling is installed on the lower part of the car 6 . The emergency stop device 10 is ...

Embodiment approach 2

[0030] figure 2 It is a configuration diagram showing an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the upper speed governor rope 20 and the lower speed governor rope 21 are connected to the counterweight 7 through a connecting device 31 . The connecting device 31 includes: a holding part 32 fixed to the middle part of the counterweight 7; connect. In this example, the movable member 33 is slidably provided on the holding member 32 .

[0031] The holding member 32 includes: a protruding portion 34 protruding from the middle portion of the counterweight 7; and a tubular portion 35 fixed to an end portion of the protruding portion 34, and having both upper and lower ends open. A movable member 33 penetrates through the tubular portion 35 so as to be slidable in the vertical direction.

[0032] The movable part 33 comprises: a penetrating rod 36 penetrating through the tubular part 35; A pair of restricting parts for the amount of ...

Embodiment approach 3

[0041] image 3 It is a configuration diagram showing an elevator apparatus according to Embodiment 3 of the present invention. In the figure, the connection device 41 includes: the holding part 32 and the movable part 33 having the same structure as Embodiment 2; The elastic member between the part 38 and the tubular part 35.

[0042] The penetration rod 36 of the movable member 33 penetrates through the spring 42 and the spring 43 . The spring 42 is compressed when the upper restricting portion 37 moves toward the tubular portion 35 , and the spring 43 is compressed when the lower restricting portion 38 moves toward the tubular portion 35 . Other structures are the same as those in Embodiment 2.

[0043] In this elevator apparatus, the spring 42 is provided between the upper restricting part 37 and the tubular part 35, and the spring 43 is provided between the lower restricting part 38 and the tubular part 35. Therefore, as in Embodiment 2, the overspeed governor can be t...

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PUM

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Abstract

In an elevator system, a joint rope is connected between a car suspended by main ropes and raised and lowered by a driving device, and a counterweight. The engaging rope is wound on the tensioning pulley. The tensioner is suspended by engaging ropes. When the lifting distances of the car and the counterweight are different from each other, the tension pulley can be moved by being pulled by the engaging rope. A detection unit is provided above the tension wheel, and a detection signal is output from the detection unit when the movement amount of the tension wheel reaches a predetermined amount. The drive means is controlled by the control means based on the input of the detection signal to the control means.

Description

technical field [0001] The invention relates to a traction elevator device in which a car and a counterweight are lifted and lowered by a driving device. Background technique [0002] Conventionally, in order to make the car and the counterweight emergency stop more reliably, it has been proposed to install emergency stop devices on the car and the counterweight separately. The individual emergency stops are connected to a common governor rope. The speed limiter rope is wound on the speed limiter sheave of the speed limiter. The speed limiter is used to restrain the speed limiter rope when the speed of the car and counterweight increases abnormally. When the speed governor restrains the speed governor rope, each emergency stop device operates to stop the car and the counterweight (see Patent Document 1). [0003] Patent Document 1: Specification of US Patent No. 6318506 [0004] However, for example, if there is an obstacle protruding in the hoistway for some reason, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B5/02
CPCB66B5/04B66B5/18
Inventor 安藤英司
Owner MITSUBISHI ELECTRIC CORP