JP5931382B2 - Stop device and elevator equipped with the same - Google Patents

Description

  Embodiments of the present invention relate to an elevator stop device that brakes an elevator body that descends excessively, and an elevator including the same, and more particularly to a governor low press mechanism that does not use a governor rope for emergency stop.

  2. Description of the Related Art Conventionally, as an elevator stop device, a governor mechanism in which a brake rope is connected to an elevator is used separately from a drive rope. However, the governor rope, which is a long object, is greatly swayed by earthquakes and strong winds, and may be damaged. In view of this, a low press governor mechanism in which the governor mechanism body is mounted on a cage, the overspeed of the cage is detected based on the relative speed with the hoistway device, and electrical emergency stop is being studied.

  In the conventional governor mechanism, when the speed is exceeded, the governor rope stops, and the brake mechanism is driven by a relative cage dropping operation. That is, the governor rope lifts the wedge-shaped member and makes it come into contact with the rail and the pressing body, so that the wedge-shaped member is stuck by friction and the brake is reliably applied. For this reason, the gravity of the cage can be used for driving the brake, and a large driving force can be secured. However, when the brake mechanism is to be driven by the system closed in the cage by the low press governor mechanism, the driving force itself is necessary. Further, when an emergency stop is performed, an output is required instantaneously, and thus an actuator having a large driving force is required.

  Conventionally, there has been proposed a method of using friction with a rail in order to drive a wedge-shaped member.

JP 2008-254837 A

  However, the conventional structure is based on the premise that a conventional governor rope exists, and cannot be used for a low press governor mechanism.

  Therefore, the problem to be solved by the invention is made in view of the above, and the brake can be reliably operated without using an actuator having a large driving force for the low press governor mechanism. It is in providing a stop device and an elevator provided with the same.

  According to the embodiment, the stopping device includes a wedge piece, a pressing body, a sliding portion, and a brake portion. The wedge piece is provided on an elevating body that moves up and down along the rail, and rises relative to the elevating body along the rail. The pressing body presses the wedge piece against the rail and is fixed to the lifting body. The sliding portion is free to drive in a direction parallel to the rail with respect to the lifting body. The brake part is installed on the sliding part, and generates a frictional force across the rail during braking operation. The connecting portion connects the wedge piece and the sliding portion.

The figure which shows the stop apparatus of 1st Embodiment, and an elevator provided with the same. The figure which shows the stop apparatus of 2nd Embodiment, and an elevator provided with the same. The figure which shows a part of stop apparatus of 3rd Embodiment. The figure which shows a part of stop apparatus of 4th Embodiment.

Hereinafter, a stop device according to an embodiment and an elevator including the same will be described in detail with reference to the drawings. Note that, in the following embodiments, the same numbered portions are assumed to perform the same operation, and repeated description is omitted.
(First embodiment)
A stop device of the present embodiment and an elevator including the same will be described with reference to FIG. The stop device of the first embodiment corresponds to the superordinate concept of the stop devices after the second embodiment.

  The stop device of this embodiment includes a connecting portion 101, a sliding portion 102, a brake portion 103, a linear motion portion 104, a wedge piece 105, and a pressing body 106. The elevator provided with the stop device further includes an elevating body 107 and a rail 108. The lifting body is also called a basket. The stop device is connected to the lifting body 107 and is used to stop the lifting body 107 with respect to the rail 108. For example, the stopping device is provided on the outer side surface of the lifting body 107 along the rail 108.

  The linear motion unit 104 is fixed to the lifting body 107. The pair of linear motion portions 104 sandwich the sliding portion 102 so that the sliding portion 102 can freely move in a direction parallel to the rail 108 (for example, the vertical direction).

  The pressing body 106 is also fixed to the lifting body 107. The pressing body 106 sandwiches the wedge piece 105 between the rail 108 and presses the wedge piece 105 against the rail 108 as the wedge piece 105 moves upward.

  The sliding portion 102 can move freely within a range determined by the linear motion portion 104. The sliding part 102 can move freely in the upper and lower ranges, for example.

  The brake part 103 is provided in the sliding part 102 and sandwiches the rail 108 to generate a frictional force with the rail 108 when performing a braking operation. The brake unit 103 may be anything as long as it generates a force with the rail 108 to reduce the speed of the sliding unit 102 with respect to the rail 108. For example, an example using an actuator will be described in detail in the second and subsequent embodiments. As another example, the brake unit 103 includes a roller, and when the centrifugal force of the roller is increased, a frictional force is generated between the rail 108 and a magnet is installed in the brake unit 103. There are some which reduce the speed of the sliding portion 102 with respect to the rail 108 by the magnetic force.

  The connecting portion 101 has two end portions for connecting two things connected to the respective end portions. The connecting portion 101 has a sliding portion 102 connected to one end and a wedge piece 105 connected to the other end. By this connecting portion 101, the movement of the sliding portion 102 and the movement of the wedge piece 105 are synchronized.

  The wedge piece 105 can move up and down in conjunction with the connecting portion 101. The wedge piece 105 is sandwiched between the rail 108 and the pressing body 106, and the frictional force between the rail 108 and the wedge piece 105 becomes stronger as the wedge piece 105 moves upward. Even if the wedge piece 105 moves upward, it is stopped by the pressing body 106. Therefore, when the wedge piece 105 stops with respect to the rail 108 by the frictional force between the wedge piece 105 and the rail 108, the pressing body 106 also stops with respect to the rail 108. Will do. Since the pressing body 106 is fixed to the lifting body 107, when the pressing body 106 stops with respect to the rail 108, the lifting body 107 also stops with respect to the rail 108.

Next, the operation of the stopping device of the present embodiment will be described with reference to FIGS. 1 (a), (b), and (c).
When a detection unit (not shown) detects an overspeed drop of the elevator, it instructs the brake unit 103 to perform a braking operation. At this time, first, as shown in FIG. 1A, the brake unit 103 sandwiches the rail 108 and generates a frictional force to generate an effect of pushing the sliding unit 102 upward relative to the lifting body 107. That is, if the brake unit 103 is operated and the sliding unit 102 decelerates relative to the rail 108 when the elevating body 107 is descending, the sliding unit 102 moves upward with respect to the linear motion unit 104, and as a result The wedge piece 105 connected to the sliding portion 102 by the connecting portion 101 also moves upward with respect to the lifting body 107.

  Then, as shown in FIG. 1B, the connected connecting portion 101 and the wedge piece 105 connected to the connecting portion 101 are lifted, and the wedge piece 105 comes into contact with the rail 108 by the effect of the pressing body 106. Once the wedge piece 105 comes into contact with the rail 108 and the frictional force increases, the wedge piece 105 is further pushed up by the frictional force to generate a braking force (referred to as a wedge effect). At this time, as shown in FIG. 1C, the connecting portion 101 and the sliding portion 102 connected to the wedge piece 105 are lifted together.

  According to the first embodiment described above, the brake can be operated reliably without using an actuator having a large driving force for the low press governor mechanism by utilizing friction with the rail. A stop device and an elevator including the same can be provided.

(Second Embodiment)
The stop device of the second embodiment specifically shows an example of the internal configuration of the sliding portion 102 of FIG. In addition, the connecting portion between the connecting portion and the sliding portion 102 is different from that of the first embodiment. Other device portions are the same as those of the stopping device of FIG.
The stop device of this embodiment will be described with reference to FIG.
The sliding portion 102 of the stopping device of the present embodiment includes a small wedge piece 202, a small pressing body 203, an actuator 204, and a connection portion 205. The connection part 201 connects the small wedge piece 202 of the sliding part 102 to one end, and connects the wedge piece 105 to the other end. The internal structure of the sliding part 102 shown in FIG. 2 is an example of the brake part 103 in FIG.

  In the present embodiment, in order to lift the wedge piece 105 of the brake mechanism, a slightly smaller mechanism is arranged by the brake mechanism using the wedge effect described in the first embodiment. The small brake mechanism includes a small wedge piece 202 and a small pressing body 203, and the wedge piece 105 and the small wedge piece 202 are connected by a connecting portion 201. However, the small wedge piece 202 and the connecting portion 201 are connected via an elongated hole 251 that allows a certain amount of displacement. Here, the long hole 251 is provided in the small wedge piece 202. Instead of the long hole 251, a concave recess may be provided. The small wedge piece 202 is driven by an actuator 204 via a connecting portion 205. This small brake mechanism is fixed to the sliding portion 102, and the sliding portion 102 is connected to the elevating body 107 via the linear motion portion 104 and can move in the vertical direction.

  In the present embodiment, the connecting portion between the connecting portion 201 and the small wedge piece 202 is not in close contact with the connecting portion 201 and the small wedge piece 202, and there is a certain margin of movement between them (ie, there is “play”). For example, the small wedge piece 202 has a hole 251 (referred to as a long hole 251) that is larger than the size of the terminal at one end of the connecting portion 201 at a portion connected to one end of the connecting portion 201 of the small wedge piece 202. In other words, the size of the long hole 251 and the terminal at one end of the connecting portion 201 are connected so that the terminal at one end of the connecting portion 201 connected to the small wedge piece 202 can move up and down in the long hole 251. Designed with size. Here, in order to have a play, the small wedge piece 202 is provided with the elongated hole 251, but the connecting portion 201 and the small wedge piece 202 are not in close contact with each other as long as there is room to move to some extent. A long hole 251 may be provided in the connecting portion 201 to provide play.

  The actuator 204 has a driving force that can slightly lift the small wedge piece 202 through the connection portion 205. Specifically, the driving force of the actuator 204 only needs to lift the small wedge piece 202 until the small wedge piece 202 touches the rail 108.

  The small pressing body 203 is fixed to the sliding portion 102. The small pressing body 203 sandwiches the small wedge piece 202 between the rail 108 and presses the small wedge piece 202 against the rail 108 as the small wedge piece 202 moves upward.

  The small wedge piece 202 can move up and down in conjunction with the connecting portion 205. The small wedge piece 202 is sandwiched between the rail 108 and the small pressing body 203, and the frictional force between the rail 108 and the small pressing body 203 becomes stronger as it moves upward. Once the small wedge 202 comes into contact with the rail 108, it is further lifted by the influence of the frictional force with the rail 108, and the speed of the sliding portion 102 relative to the rail 108 is reduced by friction. Here, since the purpose is to reduce the speed of the sliding portion 102 relative to the rail 108, a large-scale device such as the wedge piece 105 and the pressing body 106 is not necessary.

  As described above, the actuator 204 slightly lifts the small wedge piece 202, whereby the speed of the sliding portion 102 with respect to the rail 108 can be reduced, and the brake portion 103 in the first embodiment can be realized.

  Even if the small wedge piece 202 moves upward, it is stopped by the small pressing body 203. Therefore, when the small pressing body 203 stops with respect to the rail 108 due to the frictional force between the small wedge piece 202 and the rail 108, the small pressing body 203 also moves to the rail. 108 will be stopped. Since the small pressing body 203 is fixed to the lifting body 107, when the small pressing body 203 stops with respect to the rail 108, the lifting body 107 also stops with respect to the rail 108.

Next, the operation of the stopping device of the present embodiment will be described with reference to (a), (b), (c), and (d) of FIG.
When a detection unit (not shown) detects an overspeed drop of the elevator, it instructs the actuator 204 to perform a braking operation. At this time, first, the actuator 204 is driven from the state shown in FIG. 2A to the state shown in FIG. 2B, and the small wedge piece 202 of the small brake mechanism is lifted until it contacts the small pressing body 203. The wedge piece 105 of the brake mechanism of the elevating body 107 does not lift while starting from the state of FIG. 2A and lifting the length of the long hole 251. Therefore, the actuator 204 only needs to have an output enough to lift the small wedge piece 202 and the connecting portion 205 of the small brake mechanism.

  Then, as shown in FIG. 2B, once the small wedge piece 202 comes into contact with the small pressing body 203, the small wedge piece 202 is lifted up even if no force is applied by the actuator 204 due to friction. The frictional force between the small wedge piece 202 and the rail 108 also increases. At this time, the terminal of the connecting portion 201 reaches the end of the long hole 251 of the small wedge piece 202 and pulls up the wedge piece 105 of the brake mechanism of the lifting body 107 together.

  Thereafter, the small wedge piece 202 and the wedge piece 105 rise together, and eventually the wedge piece 105 comes into contact with the pressing body 106 as shown in FIG. Once the wedge piece 105 comes into contact with the pressing body 106, the wedge piece 105 is lifted up by friction and the elevator 107 is braked. Thereafter, for example, as shown in FIG. By setting it as such a mechanism, a brake can be operated reliably, without using a big actuator.

  According to the second embodiment described above, there is provided an elevator stop device that can reliably operate a brake only by using an actuator having a driving force that is small enough to lift a small wedge piece. Elevator can be provided.

(Third embodiment)
The stop device of the third embodiment specifically shows an example of the internal configuration of the sliding portion 102 of FIG. In addition, the connecting portion between the connecting portion and the sliding portion 102 in this embodiment is different from that in the first embodiment, and the connecting portion 201, the small wedge piece 202, and the long hole in the second embodiment. This is the same as 251. Other device portions are the same as those of the stopping device of FIG.
The stop device of this embodiment will be described with reference to FIG. 3 shows only a portion corresponding to the sliding portion 102 in FIG. 2, the stopping device of the present embodiment and the elevator including the same include other portions shown in FIG. 2. In FIG. 3, the rail 108 is also omitted.

  The sliding portion 102 of the stopping device of the present embodiment includes a small wedge piece 202, a small pressing body 203, a return actuator 303, a connection portion 304, a stopper 302, a small wedge piece connection portion 305, and an elastic body 301. Although not shown in FIG. 3, the connecting part 201 connects the small wedge piece 202 of the sliding part 102 to one end and connects the wedge piece 105 to the other end. The internal structure of the sliding part 102 shown in FIG. 3 is an example of the brake part 103 in FIG.

  The elastic body 301 applies a force in a direction in which the small wedge piece 202 is brought into contact with the rail 108, and in the example of FIG. 3, a force is applied in a direction in which the small wedge piece 202 is lifted upward. In the elastic body 301, for example, the sliding portion 102 has a box shape, and is connected to the bottom surface of the inside and the bottom surface of the small wedge piece 202, and applies a force in a direction to separate these bottom surfaces.

  The stopper 302 can stop the small wedge piece 202 at a position where it does not contact the rail 108, or can guide the small wedge piece 202 to a position where it comes into contact with the rail 108. The stopper 302 includes a locking portion 351 that is a bar-shaped member that moves horizontally, such as a hammer. As shown in FIG. 3A, the locking portion 351 can contact the upper end portion of the small wedge piece connection portion 305 to lock the small wedge piece connection portion 305 by operating according to an instruction. In this case, since the small wedge piece 202 does not contact the rail 108, the sliding portion 102 is not braked. On the other hand, as shown in FIG. 3B, the small wedge piece connecting portion 305 is released by moving the locking portion 351 to a position where the locking portion 351 does not contact the upper end of the small wedge piece connecting portion 305. be able to. In this case, since the small wedge piece connecting portion 305 is moved upward by the elastic body 301, once the small wedge piece 202 comes into contact with the rail 108 and the frictional force increases due to the rust effect by contacting the rail 108, The small wedge piece 202 is further pushed up by the frictional force to generate a braking force.

  The return actuator 303 is connected to the connecting portion 304 and drives the connecting portion 304 to bring the connecting portion 304 into contact with the small wedge piece connecting portion 305, so that the small wedge piece 202 is not in contact with the rail 108. This is for arranging the pieces 202. When the small wedge piece 202 is arranged at a position where the small wedge piece 202 does not contact the rail 108 by the return actuator 303, the small wedge piece connecting portion 305 is locked by the locking portion 351 of the stopper 302, and the return actuator In step 303, the connecting portion 304 is separated from the small wedge piece connecting portion 305, and the small wedge piece 202 is prepared to be disposed again at a position where it does not contact the rail 108.

Next, the operation of the stopping device of the present embodiment will be described with reference to FIGS. 3 (a), (b), and (c).
When a detection unit (not shown) detects an overspeed drop of the elevator, it instructs the stopper 302 to perform a braking operation. At this time, first, the locking portion 351 of the stopper 302 is removed from the small wedge piece connecting portion 305 from the state shown in FIG. 3A to the state shown in FIG. Lift 202 until it contacts rail 108. Then, as shown in FIG. 3B, the small wedge piece 202 comes into contact with the small pressing body 203, and as a result, comes into contact with the rail 108, and a braking force is generated.

  Further, when a release unit (not shown) for releasing the stop of the elevator releases the stop and the elevator returns, the release unit drives the return actuator 303, and as shown in FIG. Then, the small wedge piece 202 is pushed down, the release portion controls the stopper 302, and the small wedge piece connecting portion 305 is locked by the locking portion 351, so that the state shown in FIG.

  The return actuator 303 may be driven with a force enough to push the small wedge piece connecting portion 305 until the small wedge piece connecting portion 305 can be stopped by the connecting portion 351 using the connecting portion 304. This force is determined by the force of the elastic body 301 or the like. The output of the return actuator 303 can usually be moved with a smaller output than the output in the second embodiment.

  By the way, the magnitude of the driving force of the return actuator 303 may not be smaller than the driving force in the second embodiment. In the case of a system in which the brake is driven by a spring, the actuator does not need to be driven instantaneously, and may be driven slowly to store elastic energy in the spring. Here, the output is proportional to force × speed.

  According to the third embodiment described above, an elevator stopping device that can reliably actuate a brake by using an actuator having a small driving force enough to push down the small wedge piece connecting portion, and Provided elevators can be provided.

(Fourth embodiment)
The stop device of the fourth embodiment specifically shows an example of the internal configuration of the sliding portion 102 of FIG. In addition, the connecting portion between the connecting portion and the sliding portion 102 in this embodiment is different from that in the first embodiment, and the connecting portion 201, the small wedge piece 202, and the long hole in the second embodiment. This is the same as 251. Other device portions are the same as those of the stopping device of FIG.

  The stop apparatus of this embodiment is demonstrated with reference to FIG. In FIG. 4, only the part corresponding to the sliding part 102 in FIG. 2 is shown, but the stopping device of the present embodiment and the elevator including the same include other parts shown in FIG. In FIG. 4, the rail 108 is also omitted.

  The sliding portion 102 of the stopping device of the present embodiment includes a small wedge piece 202, a small pressing body 203, an elastic body 301, a small wedge piece connecting portion 305, a release and return actuator 401, a connecting portion 402, a locking portion 405, A locking elastic body 403 and a rotating shaft 404 are provided. Although not shown in FIG. 4, the connecting portion 201 connects the small wedge piece 202 of the sliding portion 102 to one end and connects the wedge piece 105 to the other end. The internal structure of the sliding part 102 shown in FIG. 4 is an example of the brake part 103 in FIG.

  The locking elastic body 403 exerts a force on the locking portion 405 so that the locking portion 405 reaches the upper part of the small wedge piece connection portion 305, and in the example of FIG. 4, is separated from the inner side surface of the sliding portion 102. Apply force in the direction.

  The locking portion 405 has a rod shape, and one end thereof is a rotating shaft portion 404, and rotates around the rotating shaft portion 404.

  The connection portion 402 has a rod shape, and one end thereof is connected to the release / return actuator 401 and is rotated by the release / return actuator 401. The other end of the connecting portion 402 can lock the side surface of the locking portion 405. For example, the connecting portion 402 includes a convex portion at the other end, and the side surface of the locking portion 405 is stopped by the convex portion.

  The release / return actuator 401 is connected to the connecting portion 402 and drives the connecting portion 402, and the locking portion 405 that locks the small wedge piece connecting portion 305 as shown in FIG. The small wedge piece connecting portion 305 is released by moving (see FIG. 4B), and the small wedge piece 202 is brought into contact with the rail 108 to operate the brake. On the other hand, when the small wedge piece connection portion 305 is released (for example, FIG. 4B), the release and return actuator 401 rotates the connection portion 402 in the direction opposite to that during brake operation to reduce the connection portion 402. The small wedge piece 202 is arranged at a position where the small wedge piece 202 is not in contact with the rail 108 as shown in FIG. When the small wedge piece 202 is disposed at a position at which the small wedge piece 202 does not come into contact with the rail 108 by the release and return actuator 401, as shown in FIG. 405 is positioned on the small wedge piece connecting portion 305 and locked. Then, the release / return actuator 401 prepares to place the small wedge piece 202 at a position where the small wedge piece 202 is not in contact with the rail 108 again by separating the connecting portion 402 from the small wedge piece connecting portion 305.

Next, the operation of the stopping device of the present embodiment will be described with reference to FIGS. 4 (a), (b), and (c).
When a detection unit (not shown) detects an overspeed drop of the elevator, it instructs the release and return actuator 401 to perform a braking operation. The release and return actuator 401 is driven in one direction (counterclockwise in FIG. 4) from the state of FIG. 4A, and the connection portion 402 is rotated around the rotation shaft portion 404 as shown in FIG. By pushing the locking portion 405 that rotates in the reverse direction, the small wedge piece connection portion 305 is released, and the brake can be activated. Further, when returning, the release and return actuator 401 is rotated in the reverse direction (clockwise in FIG. 4), and the small wedge piece 202 is pushed down by the connection portion 402. The locking portion 405 is engaged with the small wedge piece connecting portion 305 and can be returned to the state of FIG.
In the present embodiment, the brake operation and the return operation can be performed with one actuator. The release and return actuator 401 is driven with a force that pushes down the small wedge piece connection portion 305 until the small wedge piece connection portion 305 can be stopped by the locking portion 405 using the connection portion 402 at the time of return. do it. This force is determined by the force of the elastic body 301 or the like. On the other hand, when the release and return actuator 401 is released, the connecting portion 402 is used to connect the connecting portion 405 to the small wedge piece connecting portion 305 until the small wedge piece connecting portion 305 is released. The stop 405 is moved. The force to be moved is determined by the force by the locking elastic body 403, the force by the elastic body 301, and the like. The output of the release and return actuator 401 can usually be moved with a smaller output than the output in the second embodiment.

  By the way, the magnitude of the driving force of the return actuator 401 may not be less than the driving force in the second embodiment. In the case of a system in which the brake is driven by a spring, the actuator does not need to be driven instantaneously, and may be driven slowly to store elastic energy in the spring.

  According to the fourth embodiment described above, the brake can be reliably operated and restored by using only one actuator having a small driving force that pushes down the small wedge piece connecting portion and pushes the locking portion. It is possible to provide an elevator stop device and an elevator equipped with the same.

In addition, it is not limited to the said embodiment, In an implementation stage, it can change variously in the range which does not change the summary.
Further, the above embodiment includes embodiments at various stages, and various embodiments can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some configuration requirements are deleted from all the configuration requirements shown in the embodiment, this configuration requirement is deleted when the problem described in the column of the problem to be solved can be solved. The configuration can be extracted as an embodiment.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 101,201 ... Connection part, 102 ... Sliding part, 103 ... Brake part, 104 ... Linear motion part, 105 ... Wedge piece, 106 ... Pressing body, 107 ... Lifting body, 108 ... rail, 202 ... small wedge piece, 203 ... small pressing body, 204 ... actuator, 205, 304, 402 ... connection part, 251 ... long hole, 301 ... Elastic body, 302 ... Stopper, 303 ... Return actuator, 305 ... Small wedge piece connection part, 351, 405 ... Locking part, 401 ... Release and return actuator, 403... Elastic body for locking, 404.

Claims (5)

A wedge piece that is provided on a lifting body that moves up and down along a rail, and that rises relative to the lifting body along the rail;
A pressing body that presses the wedge piece against the rail and is fixed to the elevating body;
A sliding part that is free to drive in a direction parallel to the rail with respect to the lifting body;
A brake part that is installed in the sliding part and generates frictional force across the rail during braking operation;
A connecting portion for connecting the wedge piece and the sliding portion ;
The brake part is
A small wedge piece smaller than the wedge piece, connected to the connecting portion, and moved relative to the sliding portion;
A stopping device comprising: an elastic body that applies a force to the small wedge piece in a direction in which a brake is applied, relative to the lifting body . The brake part is
The stop device according to claim 1, further comprising an actuator that generates a force in a direction in which elastic energy is stored in the elastic body . A wedge piece that is provided on a lifting body that moves up and down along a rail, and that rises relative to the lifting body along the rail;
A pressing body that presses the wedge piece against the rail and is fixed to the elevating body;
A sliding part that is free to drive in a direction parallel to the rail with respect to the lifting body;
A brake part that is installed in the sliding part and generates frictional force across the rail during braking operation;
A connecting portion for connecting the wedge piece and the sliding portion ;
The sliding part is connected so as to be freely movable within a certain distance with the connecting part,
The brake part is
A small wedge piece smaller than the wedge piece, connected to the connecting portion, and moved relative to the sliding portion;
A small pressing body fixed to the sliding portion;
An elastic body that applies a force to the small wedge piece in a direction in which a brake is applied above the lifting body;
An actuator that generates force in a direction to store elastic energy in the elastic body;
A stopper that guides the small wedge piece to a position in contact with the rail;
The actuator generates a force in a direction to store the elastic energy to fix the small wedge piece at a position not contacting the rail, and when the small wedge piece is fixed at a position not contacting the rail, the stopper released by the stop device you comprises contacting a small wedge piece on the rail the elastic energy. A wedge piece that is provided on a lifting body that moves up and down along a rail, and that rises relative to the lifting body along the rail;
A pressing body that presses the wedge piece against the rail and is fixed to the elevating body;
A sliding part that is free to drive in a direction parallel to the rail with respect to the lifting body;
A brake part that is installed in the sliding part and generates frictional force across the rail during braking operation;
A connecting portion for connecting the wedge piece and the sliding portion ;
The sliding part is connected so as to be freely movable within a certain distance with the connecting part,
The brake part is
A small wedge piece smaller than the wedge piece, connected to the connecting portion, and moved relative to the sliding portion;
A small pressing body fixed to the sliding portion;
A first elastic body that applies a force to the small wedge piece in a direction in which a brake is applied, relative to the lifting body;
A locking portion for fixing the small wedge piece at a position not in contact with the rail, or for guiding the small wedge piece to a position in contact with the rail;
A second elastic body that applies a force to the locking portion so as to fix the small wedge piece at a position not in contact with the rail;
An actuator that generates a force in a direction in which elastic energy is stored in the first elastic body and moves the locking portion so that the small wedge piece is in contact with the rail. that stop devices. Rails,
A lifting body that moves up and down along the rail;
An elevator comprising the stopping device according to any one of claims 1 to 4, which is installed on the lifting body.

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