JP4341728B2 - Elevator emergency stop device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an emergency stop device for an elevator, and more particularly, to an emergency stop device capable of generating a stable braking force in an emergency.
[0002]
[Prior art]
In the elevator system, an emergency stop device is provided as a safety device that automatically stops the descent of the car when the speed of the descending car exceeds the prescribed value in Article 129-9 No. 7 of the Building Standards Law Enforcement Order It is stipulated that it must be.
[0003]
For this reason, a speed governor that detects the descending speed of the car is installed in the machine room at the upper end of the hoistway, and the speed governor rope is wound around the speed governor and the lower end stands in the pit. It is wound around the rope tension tension car.
[0004]
The middle part of the governor rope is locked to the tip of the link protruding from the side of the upper end of the car, and moves up and down as the car moves up and down. The link is connected to the upper end of a lifting bar attached to the side of the car, and a pair of wedge members that realize an emergency stop function are connected to the lower end of the lifting bar.
[0005]
When the descending speed of the car exceeds the above-mentioned specified value, the rope grip portion incorporated in the speed governor is activated and the speed governor rope is gripped. As a result, the car link is activated, and the lowering of the lifting bar is stopped. That is, when viewed from the side of the car, the lifting rod rises.
[0006]
As a result, the pair of wedge members connected to the lower ends of the lifting rods are pulled up, and the pair of wedge members sandwich the guide rail vertically disposed in the hoistway so as to be loosely fitted between the wedge members from both sides. Then stop the descent of the car.
[0007]
There are two types of emergency stop devices: an “early” emergency stop device used for low-speed and small cars, and an “advanced” emergency stop device used for high-speed cars.
[0008]
FIG. 6 is a front view showing an example of a conventional immediate emergency stop device, and FIG. 7 is a sectional view taken along line BB in FIG.
[0009]
6 and 7, this emergency stop device 60 has an upper end plate 59 </ b> A whose upper surface is fixed to the lower beam of the car and has a substantially square planar shape, and is substantially the same shape and thickness as the upper end plate 59 </ b> A. A slightly thin lower end plate 59B and an angle iron made vertically between the upper end plate 59A and the lower end plate 59B and welded vertically to the upper end plate 59A and the lower end plate 59B. A skeleton called a safety block is constituted by a pair of pillar materials that are not.
[0010]
A U-shaped groove 59a into which the head of the guide rail 51 is loosely fitted is formed in the front center portion of the upper end plate 59A and the lower end plate 59B as shown by a chain line in FIG.
[0011]
As shown in FIG. 6, a stepped portion 59d is formed on both sides of the front end of the upper end plate 59A, and a substantially convex guide receiver 59b is fixed on the upper surface of both sides of the front end of the lower end plate 59B. . On the outer upper surface of the guide receiver 9b, a horizontal stepped portion 59c is formed symmetrically with the stepped portion 59d of the upper end plate 59A described above.
[0012]
Locking portions 56a and 56b projecting from the upper and lower ends of the pair of guide plates 56A are inserted into the stepped portions 59c and 59d from the outside. It should be noted that the opposing surfaces of these guide plates 56A on the guide rail 51 side are inclined so that the distance increases toward the lower side.
[0013]
As shown in FIG. 6, a groove 6c is formed outside the central portion of the left and right guide plates 56A. As a result, the guide plate 56A is substantially U-shaped. As shown in FIG. 7, both ends of a plate spring 57 made of a thick plate (about 20 mm) formed in a U shape are loosely fitted in the groove 56c.
[0014]
A pair of pressing tools 58 are inserted into both ends of the leaf spring 57 in advance from the inside. The head of the pressing tool 58 is formed in a hemispherical shape, is fitted into a hemispherical recess formed in the upper and lower portions of the groove 56c of the guide plate 56A, and is pressed against the recess by the restoring force of the leaf spring 57. The leaf spring 57 maintains such a posture.
[0015]
The aforementioned lifting rod 52 is manufactured from a strip-shaped steel material, and the lower end of the substantially trapezoidal wedge member 53 is connected to the lower end of the lifting rod 52 via a pin. More specifically, the pair of wedge members 53 are arranged so as to sandwich the guide rail 51, and the side of the wedge member 53 facing the guide rail 51 is formed with a surface parallel to the guide rail 51, and is opposite to the guide rail 51. An inclined surface that tapers upward is formed on the side.
[0016]
As shown in FIG. 7, guide grooves parallel to the inclined surface are formed on the front and rear surfaces of the wedge member 53. Similarly, guide grooves are also formed on the front and rear surfaces of each guide plate 56A. Then, both bent portions of the roller holding plate 54 formed in a substantially bowl shape are fitted in the guide groove formed in the wedge member 53 and the guide groove formed in the guide plate 56A.
[0017]
As shown in FIG. 6, five shaft holes are formed on the center line of the front and rear roller holding plates 54, and shaft portions protruding from both ends of the roller 55 are inserted. Therefore, the roller holding plate 54 is free to move upward together with the roller 55 by sliding the bent portion of the roller holding plate 54 and the groove formed in the guide plate 56A.
[0018]
The emergency stop device 60 is also provided on the other side of the car, and is also attached to a counterweight.
[0019]
Next, the operation of the emergency stop device 60 configured as described above will be described.
[0020]
When the lowering speed of the car exceeds a prescribed value, the governor rope is gripped by the gripping portion of the governor, the lifting bar 52 stops before the car, and the lifting bar 52 is moved relative to the car and the guide plate 56A. The wedge member 53 locked to the lower end of the lifting rod 52 rises relative to the car.
[0021]
Then, the opposing surfaces on the guide rail 51 side of the pair of wedge members 53 are pressed against the side surface of the head of the guide rail 51, and the head of the guide rail 51 is sandwiched from both sides (see FIG. 7). The lowering of the car is stopped by the friction between the guide rail 51 and the opposing surface of the wedge member 53.
[0022]
At this time, the roller holding plate 54 rises together with the wedge member 53, but the roller 55 inserted into the roller holding plate 54 reduces the friction generated between the wedge member 53 and the guide plate 56 </ b> A and raises the wedge member 53. The movement is made smooth to prevent the pressing force on the guide rail 51 from decreasing.
[0023]
On the other hand, FIG. 8 is a plan view showing another example of the above-described emergency stop device, and FIG. 9 is a front view of FIG.
[0024]
8 and 9, the difference from the above-described progressive emergency stop device described with reference to FIGS. 6 and 7 is that the coil spring 63 is laterally provided at the rear portion, and the lever 64 has the coil spring 63 at the rear end. The front end is pivotally supported so that it can be pressed, and the reaction force of the pressing force of the guide rail 51 by the wedge member 53 is absorbed by the coil spring 63. Thereby, the impact to the passenger accompanying the sudden stop of the descending car can be reduced.
[0025]
More specifically, as shown in FIGS. 8 and 9, for example, a pair of guide plates arranged so that the upper end is fixed and opposed to the lower surface of a mounting base 59C manufactured in a substantially concave shape by casting. The front end portion of the lever 64 is pivotally supported by a support shaft penetrating through a bearing seat 70 fixed to the upper and lower sides of each outer surface side of 56B.
[0026]
The back surface side of the guide plate 56B is in contact with the opposing surface of the front end of the lever 64. The rear end of the lever 64 is connected to the end of a clevis-shaped spring seat 65 via a pin 64a.
[0027]
The spring seat 65 has a substantially square seat portion 65a, and both screw bolts 66 are inserted through the four corners of the seat portion 65a. Between the seat portions 65a of the left and right spring seats 65, coil springs 63 having both ends grinded to a plane are inserted. The coil spring 63 is compressed with a predetermined mounting pressure by a double nut screwed from both ends of both screw bolts 66.
[0028]
Both screw bolts 67 are inserted in the middle part of the left and right levers 64 and are tightened by double nuts screwed from both ends of the both screw bolts 67. The middle part of both screw bolts 67 penetrates a pair of support parts 59s protruding from the rear part of the mounting base 59C as shown in FIG. With such a configuration, during operation, the wedge member 53 can move following the bending of the guide rail 51 due to the manufacturing tolerance or installation tolerance of the guide rail 51, and the guide rail 51 and the wedge member 53 can be moved. It is suppressed that a required braking force cannot be obtained due to the contact surface being temporarily separated or the pressing force weakening.
[0029]
It should be noted that the emergency stop device as shown in FIGS. 6 to 9 must be employed in a high-speed (over 45 m / min) elevator. This is prescribed in Article 129-9, Paragraph 2 of the Building Standards Law Enforcement Order.
[0030]
[Problems to be solved by the invention]
However, if a large elevator requires a large braking force, or if the speed of the car is high and the wedge member collides with the end plate at a high speed, the contact portion between the wedge member and the end plate is locally There is a case where plastic deformation occurs due to compression stress. This plastic deformation prevents the movement of the wedge member following the bending of the guide rail as described above, and the contact surface between the guide rail and the wedge member is temporarily separated to reduce the pressing force, thereby reducing the braking force. It will increase the sex.
[0031]
In order to solve this problem, the present inventor considered that the wedge member and the entire safety block are made of a high-strength material, but such a configuration is extremely expensive.
[0032]
Further, when the safety block is made of a general high-strength material, heat treatment is required, but distortion occurs during the heat treatment. On the other hand, if the appropriate gap between the wedge member and the guide rail cannot be secured, the wedge member may malfunction due to vibration or the like when it is bent and attached to the guide rail. It is necessary to manufacture the safety block with high accuracy so that the wedge member can move smoothly following the bending of the guide rail. Therefore, the block needs to be processed after the heat treatment to eliminate the influence of distortion during the heat treatment on the dimensional accuracy of the safety block. However, in this case, since the material has a high hardness after the heat treatment, a great amount of labor is required for the cutting process, and the blade is worn, resulting in an increase in cost.
[0033]
The present invention has been made in consideration of such points, and provides an emergency stop device for an elevator that can prevent deformation of a collision portion between a wedge member and an end plate and generate a stable braking force. For the purpose.
[0034]
[Means for Solving the Problems]
The present invention relates to an end plate provided on a car or a counterweight and a pair of lifting rods provided to face both sides of a guide rail provided along the moving direction of the car or the counterweight, and pulled up in an emergency. And a pair of surfaces that are connected to the pull-up bar, the side facing the guide rail is formed in parallel with the guide rail, and the opposite side to the guide rail is formed with an inclined surface that tapers upward. A wedge member, a pair of guide members that are held by the cage or counterweight, and that support the wedge member so as to be relatively movable along the inclined surface, and a portion of the end plate that contacts the wedge member An elevator emergency stop device comprising a high-strength portion provided.
[0035]
According to the present invention, by providing a high-strength portion at a portion where the end plate and the wedge member abut, even if a collision occurs at high speed between the end plate and the wedge member, plasticity due to local compressive stress is produced. No deformation occurs, and a stable braking force generation function can be maintained.
[0036]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0037]
FIG. 1 is a schematic configuration diagram showing an emergency stop device portion of an elevator according to a first embodiment of the present invention. FIG. 1 shows a first embodiment of the present invention. The elevator apparatus 10 has a car (not shown) provided with an upper end plate 9A (end plate), a guide rail 1 provided along the moving direction of the car, and opposite sides of the guide rail 1. Provided with a pair of lifting rods 2 to be raised in an emergency.
The lifting rod 2 is manufactured from a strip-shaped steel material.
[0038]
A wedge member 3 is coupled to the lifting rod 2 via a pin. Each wedge member 3 is formed with a surface parallel to the guide rail 1 on the side facing the guide rail 1 and an inclined surface tapering upward on the opposite side to the guide rail 1.
[0039]
A pair of guide plates (guide members) 6 </ b> A that support the wedge member 3 so as to be relatively movable along the inclined surface are held by the cage via the leaf spring 7.
[0040]
The upper end plate 9A of the present embodiment is made of mild steel, has a substantially square planar shape, and its upper surface is fixed to a lower beam (not shown) of the car.
[0041]
A high-strength portion 12 is attached by a bolt 18 to a portion of the upper end plate 9A where the wedge member 3 abuts. The high-strength portion 12 is made of, for example, chrome molybdenum steel. In the present embodiment, the wedge member 3 is also made of a high strength material such as chromium molybdenum steel.
[0042]
Below the upper end plate 9A, there is provided a lower end plate 9B that is substantially the same shape as the upper end plate 9A and slightly thinner, and is made of angle steel between both sides of the upper end plate 9A and the lower end plate 9B. A pair of column members (not shown) are welded. The upper end plate 9A, the lower end plate 9B, and the pillar material constitute a skeleton called a safety block.
[0043]
A U-shaped groove in which the head portion of the guide rail 1 is loosely fitted is formed in the front center portion of the upper end plate 9A and the lower end plate 9B (see FIG. 7).
[0044]
Stepped portions 9d are formed on the left and right sides of the front end of the upper end plate 9A, and substantially convex guide receivers 9b are fixed to the upper surfaces of the front end sides of the lower end plate 9B. On the outer upper surface of the guide receiver 9b, a horizontal stepped portion 9c is formed symmetrically with the stepped portion 9d of the upper end plate 9A.
[0045]
Locking portions 6a and 6b projecting from the upper and lower ends of the pair of guide plates 6A are inserted into the stepped portions 9c and 9d from the outside. Note that the opposing surfaces of these guide plates 6A on the guide rail 1 side are inclined so that the distance increases toward the lower side.
[0046]
A groove 6c is formed on the outer side of the central portion of the left and right guide plates 6A. As a result, the guide plate 6A is substantially U-shaped. Both ends of a plate spring 7 made of a thick plate (about 20 mm) formed in a U shape are loosely fitted in the groove 6c (see FIG. 7).
[0047]
A pair of pressing tools 8 is inserted into both ends of the leaf spring 7 in advance from the inside. The head of the pressing tool 8 is formed in a hemispherical shape, is fitted into a hemispherical recess formed in the upper and lower portions of the groove 6c of the guide plate 6A, and is pressed against the recess by the restoring force of the leaf spring 7. . The leaf spring 7 maintains such a posture.
[0048]
Guide grooves parallel to the inclined surfaces are formed on the front and rear surfaces of the wedge member 3. Similarly, guide grooves are also formed on the front and rear surfaces of the pair of guide plates 6A. Then, both bent portions of the roller holding plate 4 formed in a substantially bowl shape are fitted in the guide groove formed in the wedge member 3 and the guide groove formed in the guide plate 6A, respectively.
[0049]
On the center line of the front and rear roller holding plates 4, five shaft holes are formed, and shaft portions projecting from both ends of the roller 5 are inserted. Therefore, the roller holding plate 4 is free to move upward together with the roller 5 by sliding the bent portion of the roller holding plate 4 and the groove formed in the guide plate 6A. Thus, the pair of guide plates 6A supports the wedge member 3 so as to be relatively movable along the inclined surface.
[0050]
In addition, a speed governor (not shown) for detecting the descending speed of the car is installed in a machine room (not shown) at the upper end of the car hoistway. The governor rope (not shown) is wound around a tension tension tension wheel (not shown) having an upper end wound around the governor and a lower end standing upright in the pit.
[0051]
The middle part of the governor rope is fixed to the tip of the link protruding from the side of the upper end of the car, and moves up and down as the car moves up and down. Are connected.
[0052]
This emergency stop device is also provided on the other side of the car and is also attached to a counterweight (not shown).
[0053]
Next, the function of the emergency stop device for an elevator configured as described above will be described.
[0054]
When the lowering speed of the car exceeds a prescribed value, the governor rope is gripped by the gripping portion of the governor, the lifting bar 2 stops before the car, and the lifting bar 2 is moved against the car and the guide plate 6A. The wedge member 3 locked to the lower end of the pulling rod 2 rises together with the roller 5 and the roller holding plate 4 with respect to the guide plate 6A, that is, the car.
[0055]
Then, the opposing surfaces on the guide rail 1 side of the pair of wedge members 3 are pressed against the side surface of the head portion of the guide rail 1, and the head portion of the guide rail 1 is sandwiched from both sides. The lowering of the car is stopped by the friction between the guide rail 1 and the opposing surface of the wedge member 3.
[0056]
At this time, since the high-strength portion 12 is provided in a place where the upper end plate 9A and the wedge member 3 are in contact with each other, even if the upper end plate 9A and the wedge 3 collide, plastic deformation due to local compressive stress does not occur. The surface remains smooth and does not impede the lateral movement of the wedge member 3 when the emergency stop function is activated.
[0057]
As a result, the wedge member 3 follows the bend of the guide rail 1 and easily moves in the lateral direction while pressing the guide rail 1, and the wedge member 3 does not move away from the guide rail 1 and the braking force is not weakened. Braking can be obtained.
[0058]
The roller 5 inserted into the roller holding plate 4 that rises together with the wedge member 3 reduces the friction generated when the wedge member 3 and the guide plate 6A slide, and the wedge member 3 moves smoothly and guides the guide. Prevents the pressure on the rail 1 from decreasing.
[0059]
As described above, according to the present embodiment, the high-strength portion 12 is provided in the portion where the upper end plate 9A and the wedge member 3 abut, so that the upper end plate 9A and the wedge member 3 can move at a high speed, for example. Even if a collision occurs, plastic deformation due to local compressive stress does not occur, and a stable function of generating a braking force can be maintained.
[0060]
Further, in the present embodiment, since the high strength portion 12 is detachably attached to the upper end plate 9A with the bolt 18, the high strength portion 12 is indented or the like due to some abnormality such as one piece of the wedge member 3. In this case, only the high-strength portion 12 can be easily replaced. Therefore, the replacement work is easy, there is no need to remove the entire emergency stop device and replace the safety block, and the replacement cost is low.
[0061]
Next, an emergency stop device according to a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a partially enlarged view of an upper end plate of the emergency stop device for an elevator according to the second embodiment.
[0062]
As shown in FIG. 2, the upper end plate 9A of the emergency stop device according to the present embodiment is the same as the first embodiment shown in FIG. 1 except that the high-strength portion 12 has an elastic layer 12a. It is the composition. In the second embodiment, the same parts as those in the first embodiment shown in FIG.
[0063]
The elastic layer 12a of the present embodiment is formed of urethane rubber and is attached to the surface of the high strength portion 12 by adhesion.
[0064]
According to the present embodiment, since the elastic layer 12a can absorb the impact caused by the collision of the wedge member 3, even if any abnormality such as a piece hit of the wedge member 3 occurs, Permanent deformation is less likely to occur. Further, during the operation of the emergency stop device, the movement of the wedge member 3 in the lateral direction is not hindered due to the deformation of the elastic layer 12a. Therefore, the wedge member 3 follows the bending of the guide rail 1 and easily moves in the lateral direction while pressing the guide rail 1, and the wedge member 3 moves away from the guide rail 1 or the pressing force is weakened, so that the braking force is increased. Stable braking can be obtained without weakening. In addition, the need for replacing the high-strength portion 12 is almost eliminated, and costs can be saved.
[0065]
Next, an elevator emergency stop device according to a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a partially enlarged view of the upper end plate of the emergency stop device according to the third embodiment.
[0066]
As shown in FIG. 3, the upper end plate 9 </ b> A of the emergency stop device of the present embodiment is the same as that of the second embodiment shown in FIG. 2 except that a low friction material 12 b is provided on the surface of the high strength portion 12. It is the structure similar to a form. In the third embodiment, the same parts as those of the second embodiment shown in FIG.
[0067]
The low friction material 12b of the present embodiment is made of a fluorine compound.
[0068]
According to the present embodiment, by attaching the low friction material 12b to the surface of the high-strength portion 12, the wedge member 3 can be more easily moved in the horizontal direction, and can follow the bend of the guide rail. Can be further increased and more stable braking can be obtained.
[0069]
Next, an emergency stop device according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a partially enlarged view of the wedge member of the emergency stop device according to the fourth embodiment.
[0070]
As shown in FIG. 4, the wedge member 3 of the emergency stop device according to the present embodiment is the first embodiment shown in FIG. 1 except that an elastic layer 3 a is formed on the contact surface side with the high-strength portion 12. It is the structure similar to this form.
[0071]
The elastic layer 3a of the present embodiment is formed of urethane rubber, and is attached to the surface of the contact portion with the high-strength portion 12 by adhesion.
[0072]
According to the present embodiment, since the elastic layer 3a can absorb the impact caused by the collision with the high-strength portion 12, even if some abnormality such as a piece of the wedge member 3 occurs, the indentation is generated in the high-strength portion 12. It becomes difficult to generate permanent deformation such as. Further, during the operation of the emergency stop device, the movement of the wedge member 3 in the lateral direction is not hindered due to the deformation of the elastic layer 3a. Therefore, the wedge member 3 follows the bending of the guide rail 1 and easily moves in the lateral direction while pressing the guide rail 1, and the wedge member 3 moves away from the guide rail 1 or the pressing force is weakened, resulting in a braking force. Stable braking can be obtained without weakening. In addition, the need for replacing the high-strength portion 12 is almost eliminated, and costs can be saved.
[0073]
Next, an elevator emergency stop device according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a partially enlarged view of the upper end plate of the emergency stop device according to the fifth embodiment.
[0074]
As shown in FIG. 5, the wedge member 3 of the emergency stop device according to the present embodiment is the fourth embodiment shown in FIG. 4 except that a low friction material 3 b is provided on the contact surface with the high strength portion 12. It is the structure similar to this form.
[0075]
The low friction material 3b of the present embodiment is made of a fluorine compound.
[0076]
According to the present embodiment, by providing the low friction material 3b on the contact surface of the wedge member 3 with the high-strength portion 12, the wedge member 3 can move more easily in the horizontal direction, and the guide The followability to the bending of the rail is further increased, and more stable braking can be obtained.
[0077]
【The invention's effect】
As described above, according to the present invention, the high strength portion is provided in the portion where the end plate and the wedge member abut, so that even when a collision at high speed occurs between the end plate and the wedge member, The plastic deformation due to the compressive stress does not occur, and a stable braking force generation function can be maintained.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating a first embodiment of an emergency stop device for an elevator according to the present invention.
FIG. 2 is a partially enlarged view of an upper end plate in a second embodiment of an emergency stop device for an elevator according to the present invention.
FIG. 3 is a partially enlarged view of an upper end plate in a third embodiment of an elevator emergency stop device according to the present invention.
FIG. 4 is a partially enlarged view of a wedge member in a fourth embodiment of an emergency stop device for an elevator according to the present invention.
FIG. 5 is a partially enlarged view of a wedge member in a fifth embodiment of an emergency stop device for an elevator according to the present invention.
FIG. 6 is a schematic front view showing an example of a conventional emergency stop device.
7 is a sectional view taken along line BB in FIG.
FIG. 8 is a schematic plan view showing another example of the conventional emergency stop device.
9 is a schematic front view of FIG. 8. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Elevator apparatus 1 Guide rail 2 Lifting rod 3 Wedge member 3a Elastic layer 3b Low friction material 4 Roller holding plate 5 Roller 6A Guide plate 6C Groove 6a, 6b Locking part 7 Leaf spring 8 Pressing tool 9A Upper end plate 9B Lower end plate 9b Guide 9c, 9d Stepped portion 10 Fastening rod 11 Spacing tool 12 High strength portion 12a Elastic layer 12b Low friction material 18 Bolt

Claims (7)

An end plate provided on a basket or counterweight;
A pair of lifting rods provided to face both sides of the guide rail provided along the moving direction of the car or the counterweight, and pulled up in an emergency;
A pair of wedge members that are connected to the pull-up bar, the side facing the guide rail is formed with a surface parallel to the guide rail, and the opposite side of the guide rail is formed with an inclined surface that tapers upward. When,
A pair of guide members that are held by the cage or counterweight and that support the wedge member so as to be relatively movable along the inclined surface;
A high-strength portion provided on a portion of the end plate that contacts the wedge member;
An emergency stop device for an elevator, comprising: The emergency stop device for an elevator according to claim 1, wherein the pair of guide members are held by the car or the counterweight via an elastic member. The emergency stop device for an elevator according to claim 1 or 2, wherein the high-strength portion is replaceable. The elevator emergency stop device according to any one of claims 1 to 3, wherein the high-strength portion includes an elastic layer. The emergency stop device for an elevator according to any one of claims 1 to 4, wherein a low friction material is provided on a surface of the high strength portion. The emergency stop device for an elevator according to any one of claims 1 to 5, wherein the wedge member has an elastic layer on a contact surface side with the high-strength portion. The emergency stop device for an elevator according to any one of claims 1 to 6, wherein the wedge member is provided with a low friction material on a contact surface with the high strength portion.

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