JPS597682A - Emergency stop device 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 the structure of an emergency stop device for an elevator.

Elevator emergency stop devices are installed on elevating objects such as elevator cars, and when the elevating object exceeds a predetermined speed, the brake body is pressed against the rail that guides the elevating object through the operation of a speed governor. configured to produce a braking action. The braking ability of such an emergency stop device is determined by the product of the pressing force of the brake body and the coefficient of friction between the brake body and the rail. Therefore, in order to obtain high braking performance with a small device, it is necessary for K to increase both the pressing force and the coefficient of friction. In order to increase the pressing force, the material of the brake body should be used to increase the pressure per unit area. Also, in order to increase the coefficient of friction, it is possible to provide a large number of protruding teeth on the surface of the brake body to increase the engagement with the rail, but in this case as well, the effective contact area of the brake body decreases, so the brake body The material must have high pressure resistance. The pressure resistance of a brake piece is determined by the limit of melting when the brake surface is rubbed, and when it melts, the frictional force becomes unstable and the brake body is severely worn out, making it impossible to obtain the braking action required by PIT. With metal braking bodies, it has been difficult to obtain a non-cancer correcting device that is small and has high braking ability.

The present invention aims to solve the above-mentioned drawbacks and to provide an emergency stop device for an elevator that is small in size and has a stable and high braking ability.

Hereinafter, one embodiment of the present invention will be explained with reference to FIG. 1P' and FIG.

In the figure, (1) is an elevating body consisting of an elevator car.

(A rail that guides the 21Vi elevating body (11), (3) is an emergency stop device attached to the elevating body (1), (arranged opposite the 41fi rail (2), detailed explanation will be omitted,
At 9 o'clock, the brake body of the emergency stop device (3) is pressed against the rail (2).

(4a) Vi's opposite surface (41) to the rail (2))
[The recess (5) is a metal plate formed into a box shape, and a plurality of fitting parts (5a) consisting of protrusions protruding from the bottom of the box; recess (4a) The support body (5b) is placed upright on the support body (5a) and inserted into the brake body (4), and (5c) is screwed into the insertion end of this. The nut (6) is a friction piece made of a ceramic plate with a through hole corresponding to the fitting part (5a) K, one side of which is fixed to the support plate (51K in the fitted state), and the other side of which is lower than the opposing surface (4b). placed prominently.

In other words, the ceramic friction plate (6) is the brake body (4).
Although it is difficult to fix it by welding etc. to the friction plate (6
) is fitted with the support plate (51K), and the support plate (5) is fitted in the recess (4
The frictional reaction force when a) is pressed is the fitting part (5a),
The force is transmitted to the brake body (4) by the support plate (5) and the recess (4a), and the friction piece (6) is reliably supported. Also friction piece +6
1K Even if a crack occurs, the cracking is prevented from progressing by the fitting part (5a), and the cracked part is removed by polishing 18M ((3
), the braking action will not be lost.

In addition, since a through hole is provided in the friction piece (6) and the fitting part (5a) is fitted, heat generated during braking is transferred from the support (5) and the brake body (4) through the fitting 1B (5a)k. Since it is dissipated, it becomes possible to apply a high pressing force. Since the ceramic friction piece (6) is provided in this way, it has high heat resistance, is resistant to melting when suppressed by the rail (2), is small in size, has high braking ability, and has high friction It is possible to obtain an emergency stop device (3) that does not have malfunctions due to missing pieces (6), has good heat dissipation, and operates stably.

Fifth. FIG. 6 shows another embodiment of the present invention, in which the same reference numerals as in FIG. 1S and FIG. 4 indicate corresponding parts.

(5a) is a fitting part consisting of a plurality of holes provided in the facing surface (4b), (made of 6111L ceramic material and provided in each fitting part (5a), and some of them are made of a plurality of holes in the fitting part (5a).
The other part is a friction piece that is fitted in and protrudes from the opposing surface (4b).

That is, the friction piece (6) made of ceramic material is attached to the fitting part (5a
) and is fixed to the brake body (4), so a detailed explanation will be omitted, but it is clear that the same effect as the embodiment shown in Figs. 1 to 4 can be obtained in this embodiment as well. .

As explained above, in the present invention, a part of the braking body that operates on the main part and presses the rail VC is fitted into the plurality of fitting parts provided on the opposing surface of the braking body, and the other part is fitted into the plurality of fitting parts provided on the opposing surface. A ceramic friction piece is provided that protrudes from the opposing surface. As a result, when pressed by the rail, the M friction piece is less likely to melt, and the pressing force can be set large.
To realize an emergency stop device for an elevator that is a small device, has high braking ability, localizes damage to friction pieces, and provides stable braking action with good dissipation of frictional heat.

[Brief explanation of the drawing]

FIG. 1 is a diagram conceptually showing a side view of a main part of an elevator system, with a part of the rail cut away, and FIG. 2 is a diagram showing an embodiment of an elevator safety device according to the present invention. 3 is a left side view of FIG. 2, FIG. 4 is a sectional view taken along IV-IV M of FIG. 3, and FIG. 5 is another implementation of the emergency stop device for an elevator according to the present invention. Fig. 3 equivalent diagram showing an example, Fig. 6 i1L Fig. 5 tv Vl -VI
? fMFlitj #Diagram “c mer〇(1)...Elevating body,
(2)...Rail, (31...Non-inertia correcting device. (4)...Braking body, (4b)...Mowing surface, (5
a)...Fitting portion, (6)...Friction piece. In Figure 6, the same parts or corresponding parts 11 are indicated by the same reference numerals. Agent Haku Kuzuno - Figure 1 Figure 2 Figure 3 Figure 4 1-TV" Figure 5! l-■ lI6 Figure

Claims (1)

[Claims] A braking body that is provided on an elevating body and operates when necessary to press a rail that guides the elevating body, wherein the braking body is disposed on a surface facing the rail and a part of the braking body is provided on the opposing surface. An emergency stop device for a tossing elevator, characterized in that it is provided with ceramic friction pieces that are fitted into a plurality of fitting portions and other portions protrude beyond the opposing surface.