JPS6253432B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevator derailment detection device, and in particular, a wire rope for detecting derailment is stretched vertically in an elevator hoistway, and a mechanism is used to grasp the wire rope when the rail derails. The present invention relates to a derailing detection device for an elevator that detects derailing by grasping and displacing the rail.

Generally, in the above-mentioned type of rail derailment detection device,
Recently, as buildings have become taller, the lift height of elevators has also increased proportionately, making it necessary to use long wire ropes for detecting rail derailment. Therefore, it is necessary to provide a wire rope for detecting rail deviation that has a relatively small mass, has a small diameter, is strong, and is strongly tensioned.

On the other hand, it is important that the gripping mechanism for grasping and displacing the wire rope for detecting rail departure can be used reliably regardless of whether the elevator is running at high or low speeds or on high or low floors.

For this purpose, the problem is how reliably the gripping mechanism can grip the wire rope for detecting rail departure without slipping, etc., and the friction coefficient of the wire rope for detecting rail departure and the friction coefficient of the grip Of course, the gripping mechanism itself, especially the fixing structure of the gripping shoe, is a problem, and it must be structured so that it can grip the rope reliably at any time regardless of aging or installation conditions. No.

In addition, in the event that an elevator derails, the derailment detection device that operates to detect the derailment can be easily restored in a short period of time when the elevator is restored, in order to avoid confusion in building traffic. For this reason, it is important to be able to immediately replace the gripping shoe of the gripping mechanism with a new one when it wears out due to the detection of the rail coming off.

This invention was made in view of the above circumstances, and its purpose is to securely grasp the wire rope for detecting rail departure with a shoe in the event that the rail comes off, regardless of whether it is a high/low speed or high/low rise elevator. To provide a very effective grip shoe that can be easily and reliably and quickly replaced and restored when the grip shoe is worn out.

In other words, the configuration of the present invention is such that a wire rope for detecting rail derailment is stretched vertically in an elevator hoistway via a support spring, and a roller for detecting derailing is attached to a counterweight or a car, and this roller is attached to a guide rail. A rail derailing response mechanism is provided which has a roller pressure contact spring that is constantly pressed into engagement with the rail, and when the counterweight or the car comes off the rail, the rail derailing detection roller comes off from the guide rail. A gripping mechanism is provided for grasping the wire rope for detecting rail derailment, and when the wire rope for derailing detection is grabbed by the gripping mechanism and displaced up and down with the movement of the counterweight or car, the detector is activated to detect derailment. In the elevator derailment detection device, the above-mentioned gripping mechanism is provided on a support base fixed to a counterweight or a car, and attached to the support base and disposed at a position in front of the rail derailment detection wire rope. The fixed side grabs and shows,
Opposite to the fixed side grip shoe, there is a movable side grip shoe disposed on the rear side of the wire rope for detecting rail derailment, and with the movable side grip shoe attached and supported on the front part, the proximal end is pivoted to the support base. There is a movable lever that can be rotated in the front and rear directions when worn, and this movable lever is constantly pressed and rotated forward to remove the rail between the movable side gripping shoe and the fixed side gripping shoe on the front side. A rope grasping spring for grasping the wire rope for detection; and a rope grasping spring attached to the support base and normally locked to the tip of the movable lever so that the movable side grasping shoe does not come into contact with the wire rope for detecting rail departure. and a latch that holds the movable lever in a backward rotation position against a rope gripping spring, and the latch of the gripping mechanism is detached from the movable lever in conjunction with the rail release operation of the rail release response mechanism. An interlocking member for releasing the latch is provided, and a screw is provided together with a presser foot that holds the fixed side shoe against the support base of the gripping mechanism, and the movable side shoe against the movable lever, excluding the respective center rope contact portions. It is characterized by being removably fixed with a stopper.

An embodiment of the present invention will be described below with reference to the drawings. Here, as shown in FIG. 1, an example will be shown in which the derailing detection device of the present invention is provided to detect derailing of the elevator counterweight 1, but it is also possible to detect derailing on the car (not shown) side. The same applies to the case.

The counterweight 1 is guided so as to be movable up and down with respect to the left and right guide rails 2, 2 fixed in the elevator hoistway in the building via upper and lower left and right guide shoes 3, 3 (lower end side not shown). The frame 1a is connected to the main wire rope 4 through the buffer spring 5 and the spring receiver 6, and the other end is connected to the main wire rope 4 through the main wire rope 4 by the drive of a hoist (not shown) in the lifting top end mechanism room. It is designed so that it can be moved up and down relative to the car connected to it.

Here, as a rail-off detection device for the counterweight 1, first, a single rail-off detection wire rope 7 is stretched over the entire length of the upper and lower sides of the hoistway. The wire rope 7 for detecting rail deviation is passed through a support frame 8 horizontally extending over the upper and lower ends of the left and right guide rails 2, 2 at its upper and lower ends (lower end side not shown), and is connected via a support spring 9 and a spring receiver 10. It is stretched so that it can be moved up and down by supporting it. The upper end spring receiver 10 of the wire rope 7 for detecting rail deviation is integrated with a detection cam 11, and a detector 12 such as a micro switch that operates in response to the vertical movement of the detection cam 11 is connected via a support 13. It is fixed on the support frame 8.

On the other hand, on the upper frame 1a of the counterweight 1, there are mounted rail removal response mechanisms 14, 14 and a gripping mechanism 15 in conjunction with these mechanisms.

The rail release response mechanisms 14, 14 are provided on the left and right sides of the upper frame 1a of the counterweight 1, respectively, and the L
A bracket 16 in the shape of a letter, a roller lever 18 whose lower end is rotatably attached to the bracket 16 by a hinge 17, a rail-off detection roller 19 attached to the upper end of this lever 18, and the roller. 19 is always press-fitted with the guide rail 2 through the lever 18, and one end is pivotally connected to the roller lever 18 to hold the gripping mechanism 15 when the rail is released. An interlocking link 21 is provided as a latch release interlocking member for releasing the latch, which will be described later.

The gripping mechanism 15 is provided approximately at the center of the upper frame 1a of the counterweight 1, and as shown in FIGS. A substantially box-shaped support base 22 through which the wire rope 7 passes through, and upper and lower support bases 22 that are attached to the front side of the support base 22 with an interval between the upper and lower sides to be placed in front of the wire rope 7 for detecting rail derailment. A pair of fixed side grip shoes 23,
24, a movable lever 26 whose lower end is pivotally attached to the lower part of the support base 22 by a hinge 25 so as to be rotatable in the front and back direction, and the movable lever 26 is attached and supported near the front upper end of the movable lever 26, so that the above-mentioned removal can be carried out. A movable side gripping shoe 2 is located on the rear side of the rail detection wire rope 7 and is arranged in a staggered manner substantially in the middle of the upper and lower fixed side gripping shoes 23 and 24.
7, the rear part of the movable lever 26 and the support base 22
The movable side gripping shoe 2 is disposed between the movable lever 26 and the back plate and is always pressed to rotate and bias the movable lever 26 forward.
A rope gripping spring 28 that presses the lever 7 forward, and a normal pressure spring 29 interposed in the upper part of the support stand 22 are provided so as to be rotatable about a pivot 30, and in normal times are hung on the upper end of the movable lever 26. A latch 31 is provided on both sides of the upper end of the support base 22 as an interlocking member for releasing the latch 31. Left and right symmetrical L-shaped latch release levers 33, 33 are rotatably mounted on pivots 32, 32, respectively, and the upper ends of the left and right latch release levers 33, 33 are connected to the left and right release rails. The other ends of the interlocking links 21 and 21 connected to the response mechanisms 14 and 14 are pivotally connected.

Here, the upper and lower fixed side gripping shoes 23, 24 and the movable side gripping shoes 27 of the gripping mechanism 15 are removably fixed to their respective mounting portions by screws. That is, FIG. 4 shows the fixing structure of the fixed side gripping shoe 23 (24 is exactly the same). It is held by the presser foot 35 except for the rope contact part to be exposed, and the screws 36, 3 are attached together with the presser foot 35.
It is removably fixed at 6. The shoe support 34 is also fixed to the front side of the support base 22 with screws 37, 37, as shown in FIGS. 2 and 3. FIG. 5 shows the fixing structure of the movable side gripping shoe 27, in which the movable side gripping shoe 27, which is a high friction body with respect to the movable lever 26, is removed to expose the central rope contact part, and the presser foot is 38 and is removably fixed with screws 39, 39.

To describe the operation of the above-mentioned configuration, the left and right rail derailment response mechanisms 14, 14 maintain the state in which the rail derailment detection roller 19 presses into the guide rail 2 and rolls under normal conditions. , the roller lever 18 does not rotate and does not operate the gripping mechanism 15 at all. However, in the event that the counterweight 1 comes off the rail, the rail-off detection roller 19 separates from the guide rail 2, and the roller lever 18 rotates under the pressure of the roller pressure contact spring 20, thereby releasing the latch. The interlocking link 21, which is an interlocking member, follows and pulls and rotates the latch release lever 33. As a result, one or both of the left and right latch release levers 33, 33 rotate as shown by the imaginary line in FIG. 2, and the latch 31 of the gripping mechanism 15 rotates against the normal pressure spring 29. Then, the movable lever 26 is pulled out from the upper end. As a result, the movable lever 26 rotates forward under the pressure of its own rope gripping spring 28 and strongly presses the movable gripping shoe 27 forward. 23, 24 and movable side grip shoe 2
7 in a staggered manner from the front and back, and the wire rope 7 for detecting rail deviation is displaced in the same direction as the movement direction of the counterweight 1, that is, upward or downward. In response to the detection cam 11 moving in conjunction with this, the detector 12 performs an operation for detecting off-rail.

Here, when the gripping mechanism 15 grabs the wire rope 7 for detecting rail removal due to the rail removal, each gripper shoe 23, 24, and 27 is securely fixed by screws via the presser feet 35, 38. Even when gripping a strong wire rope with high friction, which is tightly stretched to prevent shaking at high speeds, it can withstand the impact and exhibit a reliable gripping function. Due to the change, it becomes easy to peel off, causing problems such as being unable to cope with the accidental release of the rail, but this problem can be solved by using a screw-fastening structure using the presser feet 35 and 38. .
In addition, the grasping shoe 2 that was worn out due to the detection of the rail coming off.
3, 24, and 27 have a screw-on structure and are removable, so they can be easily and reliably and quickly converted, making it possible to carry out restoration work in a short time after an earthquake occurs. It is also economical because the chisel can be replaced with a new one. Furthermore, if the grip shoe itself is made of rubber material, it will deteriorate over time, but even in this case, it can be easily replaced periodically and inspection and maintenance can be performed easily.

Since this invention is made as described in detail above, in the event of a train coming off the rail regardless of whether it is a high-low speed or high-low elevator, the wire rope for detecting the rail departure can be grasped securely with the shoe, and the wire rope for detecting the rail departure can be grasped securely with the shoe. This is a very effective tool that allows only the worn grip shoe to be easily and reliably and quickly replaced and restored when it is worn out.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a partially omitted front view, Figures 2 and 3 are an enlarged front view and partially sectional side view of the gripping mechanism in Figure 1, and Figure 4 is a perspective view showing the fixing structure of the fixed side gripping shoe. FIG. 5 is a perspective view showing the fixing structure of the movable grip shoe. DESCRIPTION OF SYMBOLS 1... Counterweight, 7... Wire rope for detecting rail coming off, 12... Detector, 14... Rail coming off response mechanism, 15... Grasping mechanism, 19... Roller for detecting coming off rail, 20... Roller pressure contact spring, 21, 33... Latch Interlocking member for release (21...interlocking link, 33...latch release lever), 22...support stand, 23, 24
...Fixed side grip shoe, 26...Movable lever, 27...
Movable side gripping shoe, 28...Rope gripping spring, 3
1... Latch, 34... Shoe support, 35, 38... Presser foot, 36, 39... Screw.

Claims (1)

[Claims] 1. A wire rope for detecting rail derailment is stretched vertically in the elevator hoistway via a support spring,
The counterweight or the car is provided with a rail-off response mechanism having a rail-off detection roller and a roller pressure contact spring that constantly presses and engages this roller with the guide rail, and when the counterweight or the car comes off the rail, the rail-off response mechanism is provided. A gripping mechanism is provided that grips the wire rope for detecting rail derailment in conjunction with the derailing operation in which the roller for derailing detection comes off the guide rail, and the grasping mechanism grips the wire rope for detecting rail derailment and removes the counterweight or the ride. In an elevator derailing detection device configured to detect derailing by activating a detector when the car is vertically displaced as the car moves, the gripping mechanism is comprised of a counterweight or a support fixed to the car; A fixed side gripping shoe attached to a support stand and arranged at the front side of the wire rope for detecting rail departure, and a movable side gripping shoe arranged at the rear side of the wire rope for detecting rail departure opposite to the fixed side gripping shoe. With this movable grip shoe mounted and supported on the front part, a movable lever is provided that can be rotated in the front and back direction by pivoting the base end to the support base, and this movable lever is constantly pressed. a rope gripping spring that is rotated forward to grip the wire rope for rail derailment detection between the movable side gripping shoe and the fixed side gripping shoe on the front side; and a latch that locks onto the tip of the movable lever and holds the movable lever in a rearward rotating position against a rope gripping spring in a state where the movable side gripping shoe does not contact the rail detachment detection wire rope, Further, a latch release interlocking member is provided for disengaging the latch of the gripping mechanism from the movable lever in conjunction with the rail release action of the rail release response mechanism, and the fixed side shoe is movable with respect to the support base of the gripping mechanism. 1. A rail-off detection device for an elevator, characterized in that a movable side shoe is removably fixed to a lever by screwing together with a presser foot that holds each movable shoe except for the central rope contact portion.