JPS6253433B2 - - 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.

In general, this type of rail derailment detection device is installed to detect derailment on the counterweight or car side. For example, when talking about the counterweight side, there are four guide shoes or guides on the top, bottom, left and right of the counterweight. It is important to configure the system so that if the rail comes off the guide rail at any one point, the derailment can be detected and controlled operation can be performed.
As shown in Publication No. 108332, two wire ropes for detecting rail derailment are installed on the left and right inside the hoistway.
In addition, gripping mechanisms are provided on the left and right, upper and lower sides of the counterweight, that is, gripping mechanisms are provided at four locations in total: left and right, and upper and lower.

Therefore, the above-mentioned conventional rail derailment detection device has two wire ropes for detecting rail derailment on the left and right, and a total of four gripping mechanisms on the left and right, top and bottom, resulting in problems such as a very complicated configuration and high equipment costs. Ta.

This invention was made in view of the above circumstances, and its purpose is to use one wire rope for detecting rail deviations and one gripping mechanism to intensively detect deviations from the rails at either the top, bottom, left or right locations. The object of the present invention is to provide a device that can reliably perform the detection operation under the same conditions regardless of whether the rail is off the rails in the upper or lower direction or the left or right direction.

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 rail derailment detection device for an elevator, the derailment response mechanism is disposed at four locations on the top, bottom, left and right of the counterweight or the car, and the number of wire ropes for detecting derailment is The gripping mechanism is one, and the gripping mechanism is provided with a support that is fixed to a counterweight or a car, and a support that is attached to the support and is placed in front of the wire rope for detecting rail departure. A fixed side gripping shoe, a movable side gripping shoe placed on the rear side of the wire rope for detecting rail departure opposite to the fixed side gripping shoe, and a proximal end portion of the movable side gripping shoe with the movable side gripping shoe attached and supported on the front side. a movable lever that is rotatable in the front-back direction by being pivotally connected to the support base;
A rope gripping spring is attached to the support base, and the movable lever is constantly pressed and 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. During normal times, the movable lever is locked to the tip of the movable lever to hold the movable lever in a backward rotation position against the rope grasping spring in a state where the movable side grasping shoe does not contact the rail detachment detection wire rope. and a latch, and this gripping mechanism and the upper and lower parts,
A latch release control wire is provided between each of the left and right rail release response mechanisms, one of which is connected to each of the left and right rail release response mechanisms, for causing the latch to disengage from the movable lever in conjunction with the rail release operation of the rail release response mechanisms. do.

An embodiment of the present invention will be described below with reference to the drawings. Here, as shown in FIG. 1, an example is shown in which the derailing detection device of the present invention is provided to detect derailing of the counterweight 1 of an elevator. The same applies when doing so.

The counterweight 1 is connected to the main wire rope 4 while being guided so as to be movable up and down and up and down and left and right guide rails 2, 2 fixed in the elevator hoistway in the building, and via a left and right guide shoe 3. The hoisting machine in the machine room at the end of the lift (not shown)
By driving the main wire rope 4, the main wire rope 4 can be moved up and down relative to the car connected to the other end.

Here, as a rail-off detection device for the counterweight 1, first, a single rail-off detection wire rope 5 is stretched over the entire vertical length of the hoistway. Although the upper and lower ends of the rail-off detection wire rope 5 are not shown, they are supported via support springs and spring supports so as to be vertically displaceable. Further, on the upper end side of the wire rope 5 for detecting rail deviation, there is a detection cam that moves up and down integrally, and a detector (not shown) such as a micro switch that detects rail deviation in response to the vertical displacement of the detection cam. It is provided.

On the other hand, one gripping mechanism 6 is provided above the counterweight 1. As shown in FIG.
A substantially box-shaped support 7 is attached to the counterweight 1 so as to pass through the counterweight 1, and a support 7 is installed in front of the wire rope 5 for detecting rail derailment.
A pair of upper and lower fixed-side grip shoes 8 and 9 are attached to the front side of the holder 8 and 9 spaced apart from each other, respectively, and the lower end is attached to the lower part of the support base 7 by a hinge 10 so as to be rotatable in the front-rear direction. a movable lever 11;
By fixing the movable lever 11 near the upper end of the front surface thereof, a movable side gripping shoe is provided opposite to the rear side of the wire rope 5 for detecting rail departure in a staggered manner approximately in the middle of the upper and lower fixed side gripping shoes 8 and 9. 12
and move the movable side grip shoe 12 to the movable lever 11.
A rope gripping spring 13 that presses forward from the rear side through and a latch 16 which latches onto the upper end of the movable lever 11 at a portion 16a to restrict the lever 11 to a retracted position against the rope gripping spring 13.
When the rail is released, the latch 16 is pulled out via the latch release control wire 18 by the rail release response mechanism 17 (described later), and the movable side gripping shoe 12 is released via the movable lever 11 by the elastic pressure of the rope gripping spring 13. is pressed forward, and together with the upper and lower fixed side grip shoes 8 and 9, the wire ropes for detecting rail departure are grabbed in a staggered manner, and the wire ropes for detecting rail departure 5 are moved in the same direction as the moving direction of the counterweight 1, that is, upward or downward. It is designed to be able to be displaced.

As shown in FIG.
In order to prepare for each derailment of..., the counterweight 1
There are four brackets 19 on the top, bottom, left and right of the L-shaped brackets fixed to the counterweight 1 as shown in Figure 3.
A lever 20 for a roller is pivotally attached to the bracket 19 so as to be rotatable, a roller 21 for detecting off-rail is attached to the tip of the lever 20, and the roller 21 for detecting is always connected to the guide rail. 2, the roller lever 20 is pressed into contact with the roller lever 20.
One end of the control wire 18 for releasing the latch is connected to the lever 20 for the roller, and when the detection roller 21 comes off the guide rail 2 when the rail comes off, the roller is released. The roller lever 20 is rotated by the elastic pressure of the pressure contact spring 22, and the control wire 18 is pulled.

Here, the latch release control wire 18 is connected to each of the four rail release response mechanisms 17 at the top, bottom, left and right locations so that the one gripping mechanism 6 is interlocked with each of the four rail release response mechanisms 17. One control wire 18 is disposed between each of the rail derailing response mechanism 17 and one gripping mechanism 6, and each control wire 18 is connected to the second
As shown in FIGS. 3 and 4, a core wire 18b such as a steel wire is slidably inserted into a flexible tube 18a, and each tube 18a...
One end of each is fixed to the bracket 19 of each rail release response mechanism 17, each other end is fixed in parallel to the upper mounting plate 23 of one gripping mechanism 6, and penetrates into each tube 8a... Core wire 18b...
One end of each is connected to the roller lever 20 of each rail release response mechanism 17, and the other end is connected to the latch 16 of one gripping mechanism 6, and is connected in parallel to a sliding rod with a retaining collar such as a piston. They are connected via 24...

In the above-described off-rail detection device, when the guide shoe 3 on the upper right side of the counterweight 1 comes off the rail, the off-rail detection roller 21 of the off-rail reaction mechanism 17 located on the upper right side moves to the guide rail 2. When the roller lever 20 is rotated by the roller pressure contact spring 22, one end of the core wire 18b of one control wire 18 connected thereto is pulled, and the core wire 1
8b moves within the tube 18a to reliably lift the sliding rod 24 at the other end from the state shown in FIG. 4 to the state shown in FIG. This will release the latch 16 of the gripping mechanism 6.
is rotated upward against the normal pressure spring 14, and the tip claw 16a is pulled off from the upper end of the movable lever 11, and the movable lever 11 is rotated upward against the rope gripping spring 13.
The movable side gripping shoe 12 is rotated and pressed forward by the movable side gripping shoe 12. With this, the gripping mechanism 6 grips the wire rope 5 for detecting rail deviation in a staggered manner and displaces it in the moving direction of the counterweight 1, so that deviation from the rail can be detected by this displacement.

Therefore, not only when the counterweight 1 is released from the rail at the upper right part, but also when the rail is released from the other parts on the lower right side and the upper and lower parts on the left side, the rail release response mechanism 17 at each location is all controlled by the control wire in the same manner. Since it is connected to the gripping mechanism 6 by 18..., the gripping mechanism 6 is reliably interlocked with any of the rail derailment response mechanisms 17 under the same conditions as above, and the wire rope 5 for detecting rail derailment is connected to the gripping mechanism 6 by As described above, the gripping mechanism 6 operates at only one location among the top, bottom, left and right of the counterweight 1, but it also operates at two or three locations.
Even if all the locations come off the rail at the same time, the gripping mechanism 6 will operate reliably in the same way as described above.

Note that the control wire 18 may cause creep etc. during operation, so it is best to make the length adjustable.
If an adjustment screw or the like is added to the end of 8b, the length can be easily adjusted.

Further, in the above embodiment, the gripping mechanism 6 is provided on the top of the counterweight 1;
It is also possible to provide it at the bottom of the

Since this invention is made as described in detail above, it is possible to intensively detect rail deviations at either the top, bottom, left or right of a counterweight or car using one wire rope for detecting rail deviation and one gripping mechanism. In addition, the detection operation can be performed reliably under the same conditions regardless of whether the rail is off the rails in the upper, lower, left or right locations, and is extremely high-performance and highly reliable.
In addition, the configuration is simple, reducing equipment costs, and even if the elevator size and type are different, it can be installed by simply adjusting the control wire, allowing for standardization.
In addition, it is easy to install, maintain, and inspect, making it extremely effective in practical terms.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a partially omitted front view showing the schematic configuration;
Figure 3 is a sectional view of the gripping mechanism, Figure 3 is a front view of the rail release response mechanism, Figure 4 is a partially sectional front view showing the relationship between the latch release control wire and the latch, and Figure 5 is a front view of the rail release response mechanism. It is a sectional view of the same operating state. 1...Balance weight, 2...Guide rail, 5...
Wire rope for detecting rail departure, 6...gripping mechanism,
7... Support stand, 8, 9... Fixed side grip shoe, 11...
Movable lever, 12...Movable side gripping shoe, 13...Rope grasping spring, 16...Latch, 17...Rail release response mechanism, 18...Latch release control wire, 21...Rail release detection roller, 22...Roller pressure contact spring.

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 operate a detector to detect derailing when the car is displaced vertically as the car moves, the derailing response mechanism is activated vertically, horizontally, and 4 times with respect to the counterweight or the car. The number of wire ropes for detecting rail derailment is one, and the gripping mechanism is one, and the gripping mechanism includes a support base fixed to a counterweight or a car, and this support base. a fixed-side grip shoe attached to the wire rope for detecting rail departure, and a movable grip shoe disposed on the rear side of the wire rope for detecting rail departure, opposite to the fixed grip shoe; With this movable side grip shoe attached and supported on the front part, the proximal end is pivoted to the support base to create a movable lever that can be rotated in the front and back direction, and a movable lever that can be rotated forward and backward by constantly pressing this movable lever. a rope gripping spring that is rotated to grip the wire rope for detecting rail derailment between the movable side gripping shoe and the fixed side gripping shoe on the front side; and a latch that holds the movable lever in a backward rotating position against the rope gripping spring in a state where the movable side gripping shoe does not contact the wire rope for detecting rail detachment. A latch release control wire is connected between the gripping mechanism and each of the upper and lower, right and left rail release response mechanisms, and is connected to each of the upper and lower rail release response mechanisms to release the latch from the movable lever in conjunction with the rail release operation of the rail release response mechanisms. An elevator derailment detection device characterized by being provided.