JP7276727B1 - Elevator stop device and elevator - Google Patents

Abstract

[PROBLEMS] To provide an elevator stopping device capable of suppressing an increase in deceleration of a car. SOLUTION: In the elevator stopping device, each of the base body and the first wedge body has a rolling surface in contact with the rolling body, and the rolling surface of the base body and the rolling surface of the first wedge body are arranged upwardly. The elastic restoring force applied to the base body by the first elastic body increases as the base body moves away from the car rail while the second wedge body is in contact with the car rail. Each of the first wedge and the second wedge has a slide surface that slides against each other, and at least one of the slide surface of the first wedge and the slide surface of the second wedge moves upwardly away from the car rail. with an inclined surface extending to the [Selection drawing] Fig. 3

Description

The present application relates to elevator stops and elevators.

Conventionally, for example, an elevator stopping device includes a base body, a first elastic body that applies an elastic restoring force to the base body in a direction toward the car rail, a wedge unit that is arranged between the base body and the car rail, A rolling element that rolls between the base body and the wedge unit is provided. The wedge unit includes a first wedge body in contact with the rolling body, a second wedge body in contact with the rail, a rolling body that rolls between the first wedge body and the second wedge body, and a wedge body that rolls downward on the second wedge body. and a second elastic body that applies an elastic restoring force of (for example, Patent Documents 1 and 2).

Thus, in the elevator stopping devices according to Patent Documents 1 and 2, it is possible to suppress an increase in deceleration (negative acceleration) of the car due to the elevator stopping device. By the way, in order to suppress the increase in deceleration of the car due to the elevator stopping device, it is desired to use a mechanism different from the configurations according to Patent Documents 1 and 2.

Japanese Patent Application Laid-Open No. 2001-192184 WO2019/069453

An object of the present invention is to provide an elevator stopping device and an elevator that can suppress the deceleration of the car from increasing.

The elevator stopping device includes a base body, a first elastic body that applies an elastic restoring force to the base body in a direction toward the car rail, a wedge unit that is arranged between the base body and the car rail, and the a rolling element that rolls between a base body and the wedge unit; the wedge unit includes a first wedge body in contact with the rolling body, a second wedge body in contact with the car rail, and the second wedge body in contact with the car rail. a second elastic body that applies a downward elastic restoring force to the wedge body, wherein each of the base body and the first wedge body has a rolling surface in contact with the rolling body; The moving surface and the rolling surface of the first wedge body each extend toward the car rail as it goes upward, and the elastic restoring force applied to the base body by the first elastic body is the second wedge body. As the base body moves away from the car rail while the body is in contact with the car rail, the size increases, and the first wedge body and the second wedge body each include a sliding surface that slides on each other, and the first At least one of the sliding surface of the wedge and the sliding surface of the second wedge has an inclined surface extending upwardly away from the car rail.

The elevator is equipped with an elevator stop device as described above.

Schematic diagram of an elevator according to one embodiment Fig. 2(a): diagram before operation of elevator stopping device; Fig. 2(b): diagram after operation of elevator stopping device) Front view of the elevator stopping device according to the same embodiment Enlarged sectional view of IV-IV line in Fig. 3 VV line enlarged sectional view of FIG. Main part front view before operation of elevator stop device FIG. 7 shows the base body moved downward with respect to the first wedge body from the state of FIG. FIG. 8 is a view of the second wedge body moving upward with respect to the first wedge body from the state of FIG. 7; A diagram showing the relationship between time and deceleration of the elevator stopping device according to the same embodiment. Front view of essential parts of an elevator stopping device according to another embodiment FIG. 11 is a view of the base body moving downward with respect to the first wedge body from the state of FIG. 10; FIG. 11 is a diagram in which the second wedge body has moved upward with respect to the first wedge body from the state of FIG. 11; A plan view of an elevator stopping device according to still another embodiment A front view of an elevator stopping device according to still another embodiment

In each drawing, the dimensions of the components may be enlarged or reduced with respect to the actual dimensions, for example, to facilitate understanding. may not. In addition, in each drawing, for example, in order to facilitate understanding, some components may be omitted.

Ordinal terms such as first, second, etc. are used to describe various components, but the terms are only used to distinguish one component from another and are used only to distinguish one component from another. is not specifically limited by this term. Note that the number of components including the ordinal number is not particularly limited, and may be one, for example. Also, the ordinal numbers used in the following specification may differ from the ordinal numbers described in the claims.

An embodiment of an elevator and elevator stop system will now be described with reference to FIGS. 1-9. In addition, the configuration of the following embodiment is an example to help understanding the configuration of the elevator and the elevator stopping device, etc., and does not limit the configuration of the elevator and the elevator stopping device.

As shown in FIG. 1, the elevator 1 includes, for example, as in the present embodiment, a car 2 for people to get on, a car drive unit 3 for running the car 2, car rails 4 for guiding the car 2, A speed governor 5 for detecting the traveling speed of the car 2 and a control device 1a for controlling each part of the elevator 1 may be provided.

Incidentally, the driving method of the car driving unit 3 is not particularly limited. For example, as in the present embodiment, the elevator 1 includes a car rope 6 having a first end connected to the car 2, a counterweight 7 connected to a second end of the car rope 6, and a counterweight 7, and the car drive unit 3 comprises a sheave 3a around which the car rope 6 is wound, and a drive source 3b (for example, a motor) for rotating the sheave 3a. may be configured.

That is, the car drive unit 3 may be a hoist, and the elevator 1 may be of a rope type drive system. Further, for example, the car drive unit 3 may be a hydraulic system, and the elevator 1 may be a hydraulic drive system. Further, for example, the car drive unit 3 may be a linear motor, and the elevator 1 may be of a linear motor type drive system.

In this embodiment, the first end of the cage rope 6 is fixed to the cage 2, and the second end of the cage rope 6 is fixed to the counterweight 7. Not limited. For example, both ends of the car rope 6 are fixed to the upper portion or the lower portion of the hoistway X1, respectively, and the car rope 6 is wound around the sheave of the car 2 and the sheave of the counterweight 7, respectively, so that the car rope 6 is attached to the car 2. and the counterweight 7, respectively.

Further, the elevator 1 according to the present embodiment has a configuration in which the hoist, which is the car drive unit 3, is arranged inside the machine room X2, but the configuration is not limited to this. For example, the elevator 1 may be configured such that the machine room X2 is not provided and the hoisting machine is arranged inside the hoistway X1.

In each figure, the first direction D1 is the first horizontal direction D1, for example, the direction in which a person moves in and out of the car 2, and the second direction D2 is orthogonal to the first horizontal direction D1. A third direction D3 is a vertical direction D3 orthogonal to the horizontal directions D1 and D2, and is a vertical direction in which the car 2 and the counterweight 7 are vertically moved.

The speed governor 5 includes, for example, as in the present embodiment, an endless ring-shaped governor rope 5a connected to the car 2, a governor wheel 5b around which the governor rope 5a is wound in order to detect the speed of the car 2, a governor rope A tension wheel 5c suspended from the governor rope 5a and a gripper 5d for gripping the governor rope 5a may be provided to apply tension to the governor rope 5a. As a result, the speed governor 5 detects the travel speed of the car 2 based on the rotational speed of the governor wheel 5b.

Further, the elevator 1 includes, for example, an elevator stop device (hereinafter simply referred to as a "stop device") 9 for stopping the car 2 on the car rails 4 and a stop device for stopping the operation of the speed governor 5, as in the present embodiment. and a transmission unit 10 for transmitting to 9. The car 2 may include, for example, a car room 2a in which people ride and a car frame 2b fixed to the car room 2a, as in the present embodiment.

As shown in FIG. 2, the transmission part 10 includes, for example, a link mechanism 10a connected to the car frame 2b, a first movable part 10b connecting the link mechanism 10a and the stopping device 9, a link mechanism 10a and the governor rope 5a. and a force applying portion 10d for applying force to the link mechanism 10a. Although not particularly limited, the force applying portion 10d may be, for example, an elastic member (for example, a coiled spring) that applies an elastic restoring force to the link mechanism 10a as in the present embodiment.

As a result, for example, when the running speed of the car 2 is less than the set speed, as shown in FIG. , is in a standby position with respect to car 2 . Then, for example, when the running speed of the car 2 is equal to or higher than the set speed, the gripping portion 5d grips the governor rope 5a, and the running of the governor rope 5a stops.

As a result, the second movable portion 10c stops, so that the car 2 moves downward with respect to the first movable portion 10b and the second movable portion 10c, as shown in FIG. 2(b). In other words, the first movable portion 10b moves upward with respect to the car 2 from the standby position toward the upper stop position.

As shown in FIGS. 3 to 5, the stopping device 9 includes, for example, a base body 11, a first elastic body 12 that applies an elastic restoring force to the base body 11 in a direction toward the car rail 4, and the base body 11. A wedge unit 13 arranged between the rail 4 and a rolling element 14 rolling between the base body 11 and the wedge unit 13 may be provided.

The wedge unit 13 includes, for example, a first wedge body 15 in contact with the rolling elements 14, a second wedge body 16 in contact with the car rail 4, and a downward elastic restoring force applied to the second wedge body 16, as in the present embodiment. and a first guide part 18 fixed to the first wedge body 15 and guiding the second wedge body 16 . Note that the first wedge body 15 may be connected to the first movable portion 10b, for example, as in the present embodiment.

For example, when no external force (e.g., frictional force between the car rails 4) is applied to the second wedge body 16 as in the present embodiment, the elastic restoring force of the second elastic body 17 causes the second wedge body 16 to may be located at the reference position (see FIG. 3). As a result, a force larger than the elastic restoring force of the second elastic body 17 is applied to the second wedge body 16, so that the second wedge body 16 can move upward from the reference position with respect to the first wedge body 15. is.

Further, the stopping device 9 includes, for example, a second guide portion 19 fixed to the base body 11 and guiding the first wedge body 15, and a second guide portion 19 fixed to the car frame 2b and supporting the base body 11, as in the present embodiment. It may be provided with a third guide portion 20 for guiding the. In FIG. 3 , one (right) first guide portion 18 and one (right) second guide portion 19 are not shown.

The third guide portion 20 may include, for example, an upper guide portion 20a that guides the upper portion of the base body 11 and a lower guide portion 20b that guides the lower portion of the base body 11, as in the present embodiment. As a result, the base body 11 is guided by the third guide portion 20 to move toward and away from the car rail 4 .

For example, as in the present embodiment, the elastic restoring force applied to the base body 11 by the first elastic body 12 is such that the base body 11 separates from the car rail 4 while the second wedge body 16 is in contact with the car rail 4 . It may grow as it grows. In other words, the elastic restoring force applied to the base body 11 by the first elastic body 12 may decrease as the base body 11 approaches the car rail 4 while the second wedge body 16 is in contact with the car rail 4 . Although not particularly limited, the first elastic body 12 may be, for example, a U-shaped spring as in the present embodiment.

Then, for example, as in this embodiment, the first wedge body 15 has a first rolling surface 15a in contact with the rolling elements 14, and the base body 11 has a second rolling surface 11a in contact with the rolling elements 14. , a plurality of rolling elements 14 may be arranged in the vertical direction D3. Although not particularly limited, the rolling element 14 may be, for example, a roller that rolls about the second lateral direction D2 as in the present embodiment.

For example, the first rolling surface 15a and the second rolling surface 11a may extend so as to approach the car rail 4 as they go upward, as in the present embodiment. Accordingly, the first rolling surface 15a and the second rolling surface 11a are arranged to be inclined with respect to the vertical direction D3. Although not particularly limited, the first rolling surface 15a and the second rolling surface 11a may be formed in a planar shape, for example, as in the present embodiment, and may be arranged so as to be parallel to each other. .

Each of the first wedge body 15 and the second wedge body 16 may have slide surfaces 15b and 16a that slide on each other, for example, as in the present embodiment. As a result, the first wedge body 15 and the second wedge body 16, for example, do not have rolling bodies (for example, rollers) disposed therebetween, and are in direct contact with each other at their slide surfaces 15b and 16a. there is

In addition, "slide" refers to surfaces sliding in direct contact with each other, and does not include, for example, rolling elements (for example, rollers) rolling on surfaces. That is, the first slide surface 15b is a surface (non-moving surface) on which the position of the first wedge body 15 is fixed, and the second slide surface 16a is a surface on which the position of the second wedge body 16 is fixed. (non-moving surface).

For example, the first slide surface 15b and the second slide surface 16a may have inclined surfaces 15c and 16c that extend away from the car rail 4 as they go upward, as in the present embodiment. Although not particularly limited, the first slide surface 15b and the second slide surface 16a may be composed of only the inclined surfaces 15c and 16c, respectively, as in the present embodiment, for example.

Further, the first wedge body 15 includes, for example, as in the present embodiment, a main body part 15d and a protruding part 15e that protrudes from the main body part 15d toward the second wedge body 16 and has a width that narrows toward the top. may be provided. Thus, the first slide surface 15b is formed by the top of the projecting portion 15e.

Therefore, the contact area between the slide surfaces 15b and 16a is reduced, and the frictional force generated between the slide surfaces 15b and 16a is reduced. As a result, for example, the second wedge 16 can smoothly move upward with respect to the first wedge 15 . Note that the second slide surface 16a may be formed of a flat surface having a width in the second lateral direction D2 that is wider than the width in the second lateral direction D2 of the first slide surface 15b, as in the present embodiment, for example. .

The projecting portion 15e may extend in the vertical direction D3, for example, as in the present embodiment. Specifically, the protruding portion 15 e may extend, for example, in the direction in which the second wedge 16 moves relative to the first wedge 15 . Accordingly, since the first slide surface 15b extends in the vertical direction D3, the second wedge body 16 moves relative to the first wedge body 15 in the direction in which the first slide surface 15b extends. Therefore, for example, the second wedge 16 can move smoothly with respect to the first wedge 15 .

The second wedge 16 may have, for example, a braking surface 16b in contact with the car rail 4 as in this embodiment. For example, the braking surface 16b may be formed in a planar shape and arranged parallel to the vertical direction D3 as in the present embodiment.

The second elastic body 17 may include, for example, a coil spring 17a arranged between the first wedge body 15 and the second wedge body 16 as in the present embodiment. Further, for example, as in the present embodiment, the coiled spring 17a may be elastically deformed in the axial direction 17b, and the axial direction 17b of the coiled spring 17a may be arranged parallel to the inclined surfaces 15c and 16c. good.

Thus, when the second wedge 16 moves upward with respect to the first wedge 15, the coiled spring 17a is elastically deformed in the axial direction 17b. Therefore, the direction of the elastic restoring force applied to the second wedge 16 by the coil spring 17 a is parallel to the direction in which the second wedge 16 moves relative to the first wedge 15 . As a result, for example, the second wedge 16 can move smoothly with respect to the first wedge 15 .

Further, the second elastic body 17 may be composed only of the coiled spring 17a as in the present embodiment, for example. As a result, the spring constant of the second elastic body 17 is constant regardless of the elastic deformation amount of the second elastic body 17, so that the elastic deformation amount of the second elastic body 17 and the elastic restoring force of the second elastic body 17 are is directly proportional.

The configuration of the elevator 1 according to this embodiment is as described above. Next, the operation of the stopping device 9 according to this embodiment will be described with reference to FIGS. 6 to 9. FIG. Note that the operation of the stopping device 9 is not limited to the following operations. 6 to 8 (FIGS. 10 to 12, FIGS. 13(a), 14(a), and 16 are the same), the first guide portion 18 and the second guide portion 19 are illustrated. not

As shown in FIG. 6 (see also FIG. 2(a)), from the state where the first movable portion 10b is positioned at the standby position, the car 2 moves downward with respect to the first movable portion 10b ( 2(b)) and as shown in FIG. Since the rolling surfaces 11a and 15a extend upward toward the car rail 4, the wedge unit 13 comes closer to the car rail 4. As shown in FIG.

As a result, the second wedge 16 comes into contact with the car rails 4, so that the downward speed of the car 2 is reduced at a predetermined deceleration. At this time, since the frictional force generated between the braking surface 16b and the car rail 4 is small, the sliding surfaces 15b and 16a are kept in contact with each other, and the second wedge 16 moves relative to the first wedge 15. not at the reference position.

When the car 2 and the base body 11 move downward with respect to the first wedge body 15, the base body 11 moves away from the car rails 4, so that the first elastic bodies 12 move the base body 11 and the like. The elastic restoring force applied to the second wedge body 16 via the groove increases. As a result, the frictional force generated between the braking surfaces 16b and the car rails 4 increases, so that the downward deceleration of the car 2 increases.

After that, as the frictional force generated between the braking surface 16b and the car rail 4 increases, the second wedge 16 contacts the car rail 4 and moves against the first wedge 15 as shown in FIG. Move up. At this time, the sliding surfaces 15b and 16a slide against each other, so the frictional force generated between the sliding surfaces 15b and 16a discontinuously decreases from static frictional force to dynamic frictional force.

As a result, the frictional force generated between the two slide surfaces 15b and 16a suddenly decreases, so that the second wedge body 16 acts against each force (for example, the frictional force between the two slide surfaces 15b and 16a, the braking surface 16b and the car). The first wedge body 15 moves upward at a stretch until the position where the frictional force between the rails 4 and the elastic restoring force of the second elastic body 17 are balanced. Since the slide surfaces 15b and 16a are provided with the inclined surfaces 15c and 16c, the first wedge body 15 and the base body 11 move toward the car rail 4 at once.

As a result, the elastic restoring force that the first elastic body 12 applies to the second wedge body 16 through the base body 11 and the like suddenly decreases. Therefore, the frictional force generated between the second wedge body 16 and the car rail 4 suddenly decreases, so that an increase in the downward deceleration of the car 2 can be effectively suppressed.

Although not particularly limited, for example, as shown in FIG. 9, when the car 2 starts decelerating and then both slide surfaces 15b and 16a start sliding, the deceleration of the car 2 decreases. You may As a result, an increase in the downward deceleration of the car 2 can be suppressed, and an increase in the maximum downward deceleration of the car 2 can be suppressed.

As described above, the elevator 1 according to the present embodiment includes the elevator stopping device 9 described above.

As in this embodiment, the elevator stopping device 9 includes a base body 11, a first elastic body 12 that applies an elastic restoring force to the base body 11 in a direction toward the car rail 4, and the base body 11. A wedge unit 13 arranged between the car rail 4 and a rolling element 14 rolling between the base body 11 and the wedge unit 13 are provided. a first wedge body 15 in contact with the base body, a second wedge body 16 in contact with the car rail 4, and a second elastic body 17 that applies a downward elastic restoring force to the second wedge body 16; 11 and the first wedge body 15 are provided with rolling surfaces 11a and 15a in contact with the rolling bodies 14, respectively. extend toward the car rail 4 as they go upward, and the elastic restoring force applied to the base body 11 by the first elastic body 12 is the state in which the second wedge body 16 is in contact with the car rail 4. , the base body 11 becomes larger as it separates from the car rail 4, and the first wedge body 15 and the second wedge body 16 are provided with sliding surfaces 15b and 16a that slide on each other, and the first wedge At least one of the slide surface 15b of the body 15 and the slide surface 16a of the second wedge body 16 (in this embodiment, both slide surfaces) 15b and 16a are separated from the car rail 4 as they go upward. It is preferable to have inclined surfaces 15c and 16c extending to the .

According to such a configuration, the sliding surface 15b of the first wedge body 15 and the sliding surface 16a of the second wedge body 16 contact each other, thereby generating a static frictional force between the two sliding surfaces 15b and 16a. As the base body 11 moves downward with respect to the first wedge body 15, the elastic restoring force applied from the first elastic body 12 to the second wedge body 16 increases. The frictional force between wedges 16 increases.

As a result, the second wedge 16 moves upward with respect to the first wedge 15 while the slide surfaces 15b and 16a slide against each other. At this time, the frictional force generated between the two slide surfaces 15b and 16a decreases discontinuously from static frictional force to dynamic frictional force, so that the second wedge 16 does not move the first wedge 15 until the forces are balanced. move upwards at once.

Since at least one of the slide surfaces 15b and 16a has inclined surfaces 15c and 16c, the first wedge body 15 and the base body 11 move toward the car rail 4 at once. As a result, the elastic restoring force that the first elastic body 12 applies to the second wedge body 16 through the base body 11 and the like suddenly decreases. Therefore, the frictional force generated between the second wedge body 16 and the car rail 4 suddenly decreases, so that the deceleration of the car 2 can be suppressed from increasing.

Further, as in the present embodiment, in the elevator stopping device 9, one of the first wedge 15 and the second wedge 16 (in this embodiment, the first wedge) 15 is , a main body portion 15d, and a protruding portion 15e that protrudes from the main body portion 15d toward the other wedge body (second wedge body in this embodiment) 16 and whose width narrows toward the top, It is preferable that the sliding surface 15b of one wedge body 15 is configured by the top portion of the projecting portion 15e.

According to such a configuration, the width of the projecting portion 15e narrows toward the top, and the slide surface 15b of one of the wedges 15 is formed by the top of the projecting portion 15e. , 16a can be reduced. Thereby, the frictional force generated between both slide surfaces 15b and 16a can be reduced.

Further, in the elevator stopping device 9 as in the present embodiment, the protruding portion 15e extends in the vertical direction D3, and the slide surface of the one wedge body (the first wedge body 15 in the present embodiment) 15b preferably extends in the vertical direction D3.

According to such a configuration, the slide surface 15b of one wedge 15 extends in the vertical direction D3, so that the second wedge 16 can move toward the first wedge 15 in the direction in which the slide surface 15b extends. ,Moving.

Further, as in the present embodiment, in the elevator stopping device 9, at least one of the slide surface 15b of the first wedge 15 and the slide surface 16a of the second wedge 16 (in this embodiment, both The sliding surfaces 15b and 16a are composed only of the inclined surfaces 15c and 16c, and the second elastic body 17 includes a coil spring 17a elastically deformed in the axial direction 17b. are parallel to the inclined surfaces 15c and 16c.

According to such a configuration, since at least one of the slide surfaces 15b and 16a is composed only of the inclined surfaces 15c and 16c, the second wedge body 16 is inclined with respect to the first wedge body 15 with the inclined surfaces 15c and 16c. Move in a parallel direction. Since the axial direction 17b of the helical spring 17a is parallel to the inclined surfaces 15c and 16c, the helical spring 17a is elastically deformed in the axial direction 17b. As a result, the direction of the elastic restoring force applied to the second wedge 16 by the coil spring 17 a is parallel to the direction in which the second wedge 16 moves relative to the first wedge 15 .

In addition, the elevator 1 and the elevator stopping device 9 are not limited to the configurations of the above-described embodiments, and are not limited to the above-described effects. Also, the elevator 1 and the elevator stopping device 9 can be modified in various ways without departing from the gist of the present invention. For example, it is of course possible to arbitrarily select one or a plurality of configurations, methods, etc., according to various modified examples described below and employ them in the configurations, methods, etc., according to the above-described embodiment.

(1) In the elevator stopping device 9 according to the above-described embodiment, the first slide surface 15b is formed by the top portion of the protruding portion 15e, and the second slide surface 16a is positioned further in the second lateral direction D2 than the first slide surface 15b. It is a configuration that is formed with a wide flat surface. However, the elevator stopping device 9 is not limited to such a configuration.

For example, the second slide surface 16a may be configured by the top of the projecting portion, and the first slide surface 15b may be formed by a flat surface that is wider in the second horizontal direction D2 than the second slide surface 16a. . Further, for example, the first slide surface 15b and the second slide surface 16a may be formed of flat surfaces having the same width in the second horizontal direction D2.

(2) Further, in the elevator stopping device 9 according to the above-described embodiment, the projecting portion 15e and the first slide surface 15b are configured to extend in the vertical direction D3. However, the elevator stopping device 9 is not limited to such a configuration.

For example, the projecting portion 15e may be formed in a hemispherical shape, and the first slide surface 15b may be configured by the top portion of the projecting portion 15e. Further, for example, as shown in FIGS. 10 to 12, the projecting portion 15e and the first slide surface 15b may be configured to extend in the second lateral direction D2.

(3) Further, in the elevator stop device 9 according to the above embodiment, both the first slide surface 15b and the second slide surface 16a are configured only by the inclined surfaces 15c and 16c. However, the elevator stopping device 9 is not limited to such a configuration.

For example, the first slide surface 15b may have an inclined surface 15c, and the second slide surface 16a may not have an inclined surface 16c. Alternatively, for example, as shown in FIGS. 10 to 12, the first slide surface 15b may not include the inclined surface 15c, and the second slide surface 16a may include the inclined surface 16c.

(3-1) Here, the configuration of the elevator stop device 9 shown in FIGS. 10 to 12 will be described below.

As shown in FIG. 10, for example, the angle of inclination of the second region 16e with respect to the vertical direction D3 may be larger than the angle of inclination of the first region 16d with respect to the vertical direction D3. Specifically, as shown in FIG. 10, the first area 16d is a plane extending in a direction parallel to the vertical direction D3, and the second area 16e extends away from the car rail 4 as it goes upward. The configuration may be such that it is an extending inclined surface 16c.

Next, the operation of the elevator stop device 9 of FIGS. 10-12 will be described below.

As shown in FIG. 10, the car 2 moves downward with respect to the first movable part 10b from the state where the first movable part 10b is positioned at the standby position, and as shown in FIG. And the base body 11 moves downward with respect to the first wedge body 15 . Note that when the second wedge body 16 is positioned at the reference position, the first slide surface 15b is in contact with the first region 16d of the second slide surface 16a.

Thereafter, as shown in FIG. 12, while the second wedge 16 is in contact with the car rail 4 and the sliding surfaces 15b and 16a slide against each other, the second wedge 16 is moved relative to the first wedge 15. Move up. At this time, the first slide surface 15b slides with the first region 16d and then slides with the second region 16e.

By the way, when the first slide surface 15b slides on the first region 16d, the first wedge body 15 and the base body 11 move in a direction parallel to the first region 16d, that is, in a direction parallel to the vertical direction D3. . As a result, the elastic restoring force applied by the first elastic body 12 to the second wedge body 16 via the base body 11 and the like does not change.

On the other hand, when the first slide surface 15b slides on the second area 16e, the first wedge 15 and the base 11 move in a direction parallel to the second area 16e, that is, move closer to the car rail 4. . This reduces the elastic restoring force that the first elastic body 12 applies to the second wedge body 16 through the base body 11 and the like.

As a result, the ratio of the amount of change in the elastic restoring force applied to the second wedge 16 by the first elastic body 12 to the amount of movement of the second wedge 16 with respect to the first wedge 15 changes. Therefore, for example, by appropriately designing the inclination angles of the first region 16d and the second region 16e with respect to the vertical direction D3, the deceleration of the car 2 can be changed to a desired value.

Thus, in the elevator stop device 9, as shown in FIGS. 10 to 12, the slide surface 16a of the other wedge body (the second wedge body in FIGS. A region 16d and a second region 16e connected to the first region 16d are provided. It is also possible to have a configuration in which the angle of inclination differs from the angle of inclination.

According to such a configuration, the angle at which the second region 16e is inclined with respect to the vertical direction D3 differs from the angle at which the first region 16d is inclined with respect to the vertical direction D3. The direction of movement of the wedge 16 changes. As a result, the ratio of the amount of change in the elastic restoring force applied to the second wedge 16 by the first elastic body 12 to the amount of movement of the second wedge 16 with respect to the first wedge 15 changes.

(3-2) In the elevator stopping device 9 shown in FIGS. 10 to 12, the angle at which the second region 16e is inclined with respect to the vertical direction D3 is the angle at which the first region 16d is inclined with respect to the vertical direction D3. It is a configuration that is larger than. However, the elevator stopping device 9 is not limited to such a configuration. For example, the angle of inclination of the second region 16e with respect to the vertical direction D3 may be smaller than the angle of inclination of the first region 16d with respect to the vertical direction D3.

(4) Further, in the elevator stopping device 9 according to the above embodiment, the first elastic body 12 is a U-shaped spring and is connected to the base body 11 . However, the elevator stopping device 9 is not limited to such a configuration. For example, as shown in FIG. 13, the elevator stop device 9 includes a rotating body 21 that is rotatable about a shaft portion 21a. The second end 21 c of the moving body 21 may be connected to the first elastic body 12 .

(5) Further, in the elevator stopping device 9 according to the above-described embodiment, the base member 11 and the wedge unit 13 are provided as a pair so as to sandwich the car rail 4 in the first lateral direction D1. However, the elevator stopping device 9 is not limited to such a configuration. For example, as shown in FIG. 14, one base body 11 and one wedge unit 13 may be provided only on one side of the car rail 4 (on the right side in FIG. 14).

(6) In addition, in the elevator stopping device 9 according to the above-described embodiment, the coiled spring 17a of the second elastic body 17 is arranged above the second wedge body 16, and the second wedge body 16 The coil spring 17a elastically deforms to contract as it moves upward with respect to the second wedge body 16, thereby applying a downward elastic restoring force to the second wedge body 16. As shown in FIG. However, the elevator stopping device 9 is not limited to such a configuration.

For example, the helical spring 17a of the second elastic body 17 is arranged below the second wedge 16, and as the second wedge 16 moves upward with respect to the first wedge 15, the helical spring 17a The coil spring 17a may apply a downward elastic restoring force to the second wedge body 16 by elastically deforming the second wedge body 16 .

(7) In addition, in the elevator stopping device 9 according to the above-described embodiment, the second elastic body 17 includes the helical spring 17a. is parallel to the direction of movement with respect to However, the elevator stopping device 9 is not limited to such a configuration.

For example, the second elastic body 17 may include a plate spring, disc spring, rubber, or the like, or may include a plurality of helical springs 17a, plate springs, plate springs, rubber, or the like. Also, for example, the axial direction 17b of the coiled spring 17a may be inclined in the direction in which the second wedge 16 moves relative to the first wedge 15 .

(8) In addition, in the elevator stopping device 9 according to the above-described embodiment, the first slide surface 15b and the second slide surface 16a do not move relative to each other even when the second wedge body 16 moves relative to the first wedge body 15. is formed so that the contact area between is constant (unchangeable). However, the elevator stopping device 9 is not limited to such a configuration.

For example, the first slide surface 15b and the second slide surface 16a are formed such that the contact area between them changes as the second wedge 16 moves relative to the first wedge 15. The configuration may be such that As an example, at least one of the first slide surface 15b and the second slide surface 16a may be formed such that the width in the second lateral direction D2 varies in the vertical direction D3.

As a result, the second wedge 16 moves upward with respect to the first wedge 15, thereby changing the frictional force generated between the slide surfaces 15b and 16a. Therefore, for example, by appropriately designing the contact area between both slide surfaces 15b and 16a, the deceleration of the car 2 can be changed to a desired value.

For example, the second wedge 16 may be moved upward with respect to the first wedge 15 so that the contact area between the slide surfaces 15b and 16a is reduced. As a result, as the second wedge 16 moves upward with respect to the first wedge 15, the frictional force generated between the slide surfaces 15b and 16a is reduced.

Further, for example, the contact area between the sliding surfaces 15b and 16a may be increased by moving the second wedge 16 upward with respect to the first wedge 15. FIG. As a result, as the second wedge 16 moves upward with respect to the first wedge 15, the frictional force generated between the sliding surfaces 15b and 16a increases.

(9) Further, in the elevator stopping device 9 according to the above-described embodiment, the speed governor 5 is provided with the governor rope 5a, and the gripping portion 5d grips the governor rope 5a so that the car 2 is moved to the first movable portion 10b. It is a configuration in which it moves downward with respect to However, the elevator stopping device 9 is not limited to such a configuration.

For example, the speed governor 5 may not include the governor rope 5a, and the governor wheel 5b may rotate as the car 2 travels when the governor wheel 5b comes into contact with the car rail 4. FIG. Then, when the traveling speed of the car 2 is equal to or higher than the set speed, the first movable part 10b is moved upward with respect to the car 2 by, for example, applying a force to the first movable part 10b. It's okay.

DESCRIPTION OF SYMBOLS 1... Elevator, 1a... Control device, 2... Car, 2a... Car room, 2b... Car frame, 3... Car drive part, 3a... Sheave, 3b... Drive source, 4... Car rail, 5... Speed governor, 5a... Governor rope, 5b... Governor wheel, 5c... Tension wheel, 5d... Grip part, 6... Car rope, 7... Balance weight, 8... Weight rail, 9... Elevator stopping device, 10... Transmission part, 10a... Link mechanism , 10b... first movable part, 10c... second movable part, 10d... force applying part, 11... base body, 11a... second rolling surface, 12... first elastic body, 13... wedge unit, 14... rolling element , 15... First wedge body 15a... First rolling surface 15b... First slide surface 15c... Inclined surface 15d... Main body part 15e... Protruding part 16... Second wedge body 16a... Second slide Surface 16b Braking surface 16c Inclined surface 16d First region 16e Second region 17 Second elastic body 17a Helical spring 17b Axial direction 18 First guide portion 19 Second guide portion 20 Third guide portion 20a Upper guide portion 20b Lower guide portion 21 Rotating body 21a Shaft 21b First end 21c Second end D1 First horizontal direction, D2... Second horizontal direction, D3... Vertical direction, X1... Hoistway, X2... Machine room

Claims (5)

a base body;
a first elastic body that applies an elastic restoring force to the base body in a direction toward the car rail;
a wedge unit disposed between the base body and the car rail;
a rolling element that rolls between the base body and the wedge unit;
The wedge unit includes a first wedge body in contact with the rolling elements, a second wedge body in contact with the car rail, and a second elastic body that applies a downward elastic restoring force to the second wedge body,
each of the base body and the first wedge body has a rolling surface in contact with the rolling element;
the rolling surface of the base body and the rolling surface of the first wedge body extend upward toward the car rail,
The elastic restoring force applied to the base body by the first elastic body increases as the base body moves away from the car rail while the second wedge body is in contact with the car rail,
each of the first wedge body and the second wedge body includes a sliding surface that slides against each other;
wherein at least one of the sliding surface of the first wedge and the sliding surface of the second wedge comprises an inclined surface extending upwardly away from the car rail,
One of the first wedge body and the second wedge body includes a body portion and a projection portion projecting from the body portion toward the other wedge body and having a width that narrows toward the top. prepared,
An elevator stopping device, wherein said sliding surface of said one wedge is constituted by said apex . The projecting portion extends in the vertical direction,
2. The elevator stopping device according to claim 1 , wherein said sliding surface of said one wedge extends vertically. At least one of the sliding surface of the first wedge body and the sliding surface of the second wedge body is composed only of the inclined surface,
The second elastic body includes a spiral spring that elastically deforms in the axial direction,
3. An elevator stop according to claim 1 or 2 , wherein said axial direction of said helical spring is parallel to said inclined surface. the slide surface of the other wedge body includes a first region and a second region connected to the first region;
2. The elevator stopping device according to claim 1 , wherein the angle at which the second region is tilted with respect to the vertical direction is different from the angle at which the first region is tilted with respect to the vertical direction. An elevator comprising the elevator stopping device according to any one of claims 1-4 .

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