JPS5852167A - Test device for operation of limit switch for elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operation testing device for a limit switch installed above an elevator hoistway.

1. Operation tests of conventional limit switches are shown in Figures 1 and 2.
This will be explained using figures.

FIG. 1 shows the arrangement of limit switches installed in an elevator hoistway.

The limit switch 2 installed at the top of the hoistway l in FIG. When the operating bracket 4 pushes the limit switch lever 2a, the limit switch 2
make it work.

Figure 2 shows the operation test of the upper limit switch 2 during periodic inspection and maintenance work.
The test was carried out in such a way that the tester sat on top of the tester, moved the tester up and down at low speed to ensure the tester's safety, and forced the tester to operate the limit switch lever 2a by hand as shown in Figure 2. was. 5 is a mounting bracket.

However, the purpose of installing the limit switch 2 is to ensure ultimate safety in case the deceleration safety switch (not shown) installed before the elevator car reaches the limit switch 2 fails. . Therefore, this type of operation test should originally be conducted under high-speed operating conditions, but it is actually dangerous and this test has been considered impossible for safety reasons.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a limit switch operation testing device that can easily and safely test the operation of a limit switch during high-speed operation.

The present invention involves attaching a removable power device to the limit switch to operate the limit switch lever, and remotely controlling the power device using a wireless control device, wire control device, etc. to operate the limit switch safely even in high-speed operation. This made it possible to test the operation reliably.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows a device according to the invention, including a battery 7, a receiver 8. Servo motor 9 and power transmission rod 10. L-shaped horn 11. It consists of a trigger tool 12 and a storage box 13 that houses the above-mentioned devices, and the servo motor 9 is adhesively fixed to the storage box 13.

A circular horn 15 is directly connected to the motor shaft 14 of the servo motor 9, and a freely movable rod 10 is pivotally supported near the outer periphery of the circular horn 15, and the other end of the rod IO is connected to an L-shaped hoe 711. The horn 11 is bearing the housing box 13 and rotates around the housing box 13. A trigger tool 12 is attached to one side of this L-shaped hose 711-.

FIG. 4 shows a transmitter 16 that controls the servo motor 9.
A switch lever 16a is provided.

Figure 5 shows another embodiment of the present invention in which the limit switch main body is installed in reverse.
7 is used.

6 and 7 are limit switch installation diagrams in one embodiment of the present invention.

The storage box 13 is fixed to the limit switch mounting bracket 5 using a band 18. The trigger tool 12 attached to the L-shaped horn 11 is hooked onto the roller shaft 2b of the limit switch lever 2a and set.

When the switch lever 16a of the transmitter 16 is operated, the radio waves transmitted from the transmitter 16 are caught by the receiver 8, and the servo motor 9 is rotated to an arbitrary point. As a result, the circular horn 15 directly connected to the servo motor 9 rotates, and the L-shaped horn 11 attached to the other end of the rod 10 is rotated via the rod 10 attached to the circular horn 15. The limit switch lever 2a can be pulled to an arbitrary point by a trigger tool 12 attached to one side of the lever.

Also, if the mounting direction of limit switch 2 is reversed, the 5th
The same thing as above is possible by using the special metal fittings 17 shown in the figure.

In the case of FIG. 5, limit switch lever 28f7) Insert the fulcrum bolt 19 into the hole of the special metal fitting 17, and rotate the circular horn 15 directly connected to the servo motor shaft 14 using the fulcrum bolt 19 as a fulcrum to move the special metal fitting 17 to the fulcrum bolt. Operate centrally.

As explained above, according to the elevator limit switch operation test device of the present invention, the limit switch operation test can be performed by remote control, so safety can be ensured, and the limit switch can also be operated not only at low speeds but also at high speeds. This has the effect of allowing tests to be conducted easily and safely.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the arrangement of limit switches installed in the elevator hoistway, Fig. 2 is a schematic diagram showing the conventional test method, and Figs. A schematic diagram showing each part, and FIGS. 6 and 7 are installation diagrams of the limit switch operation test device, respectively. 2...Limit switch, 2a...Liminotsuinochi shoulder /fl 1fI2I2] 1hlI part

Claims (1)

[Claims] 1. A limit switch for an elevator, which is equipped with a limit switch at the upper part of an elevator hoistway, and is equipped with a power device for operating the limit switch, and is configured to operate the power device remotely. Operation test equipment.