JP6424702B2 - Safety device for elevator - Google Patents

Description

  The present invention relates to a safety gear for elevators, and more particularly to a safety gear for up-and-downs.

  In the elevator, when the car falls below the specified speed due to the breakage of the main rope for raising and lowering the car for carrying people and loads, the safety gear attached to the car operates to make the car safe To be stopped. There are a fast type and a progressive type in this emergency stop device. Based on the rated speed, the early type is limited to elevators of 45 m / min or less. The following formula is not particularly limited as to the rated speed, and is widely used in low to high speed elevators.

  The conventional up-and-down emergency stop device has, for example, a structure as shown in FIG. 11 (Patent Document 1). The safety gear 400 is generally attached to the lower beams LB2 and LB4 that constitute a car frame.

  The safety device 400 has an upper plate 402 and a lower plate 404. The upper plate 402 and the lower plate 404 are connected by a pillar member (not shown) at a constant interval in the vertical direction, and the upper plate 402 is connected to the lower beams LB2 and LB4 by bolts and nuts (not shown) or the like. It is fixed. Stepped step portions 402A, 402B, 404A, and 404B are formed at both ends of each of the upper plate 402 and the lower plate 404 in FIG.

  The safety device 400 includes a pair of wedge receiving members 406 and 408 which are attached to the stepped portions 402A, 402B, 404A and 404B by U-shaped springs 410 described later. The wedge receiving members 406 and 408 have hooks 406A, 406B, 408A and 408B at upper and lower ends, and the hooks 406A, 406B, 408A and 408B are pressed by the step parts 402A, 404A, 402B and 404B. , Are arranged opposite.

  A U-shaped spring 410 which is U-shaped in a plan view is provided so as to grip the wedge receiving members 406 and 408 from the left and right sides in FIG. Through holes 410A and 410B are opened at both end portions of the U-shaped spring 410, and hemispherical heads 412B and 414B are formed at one end of the shafts 412A and 414A in each of the through holes 410A and 410B. Shafts 412A and 414A of the pressing members 412 and 414 are inserted.

  Hemispherical recessed portions 406C and 408C are formed on the side surfaces of the wedge receiving members 406 and 408, and head portions 412B and 414B of the pressing members 412 and 414 fit into the recessed portions 406C and 408C, respectively.

  According to the above-described configuration, the wedge receiving members 406 and 408 are always urged in the direction of approaching each other by the U-shaped spring 410 via the pressing tools 412 and 414, and in the normal state, the wedge receiving member 406, In the case 408, the wedge-shaped portions 406A, 406B, 408A, 408B are pressed (contacted) by the step portions 402A, 404A, 402B, 404B, and the distance between the two wedge receiving members 406, 408 is maintained constant. .

  Between the pair of wedge receiving members 406 and 408, the parallel clamped surfaces GR2 and GR4 of the guide rail GR for guiding raising and lowering of the car are interposed therebetween, and a gap is formed between the corresponding clamped surfaces GR2 and GR4. , A pair of wedge members 416, 418 are provided. Each of the wedge members 416, 418 has a clamping surface 416A, 418A opposite to the corresponding clamped surface GR2, GR4 and an inclined surface 416B, 418B opposite to the clamping surface 416A, 418A. The inclined surfaces 416B and 418B are inclined away from the corresponding clamped surfaces GR2 and GR4 as they go downward.

  The wedge receiving members 406 and 408 are formed on guide surfaces 406D and 408D formed in the inclined surfaces parallel to the inclined surfaces 416B and 418B, and surfaces inclined to the guide surfaces 406D and 408D. Between the surfaces 416B and 418B, a plurality of rollers 420 and 422 held by a holder (not shown) are provided.

  A pulling rod (not shown) is connected to each of the wedge members 416 and 418, and when the car descends beyond a specified speed, the pulling rod is moved by a mechanism (not shown) including a governor (not shown). It is pulled up.

  As the pull-up rod is pulled up, the wedge members 416 and 418 are guided to the guide surfaces 406D and 408D via the rollers 420 and 422, and skew toward the guide rail GR, and eventually the tightening surfaces 416A and 418A Contact the tightening surfaces GR2 and GR4.

  Since the car continues to descend, the frictional force generated between the two acts on the clamping surfaces 416A and 418A in contact with the clamping surfaces GR2 and GR4. Then, by the “wedge principle (wedge boosting effect)”, the wedge members 416 and 418 displace the wedge receiving members 406 and 408 in the left and right outward direction against the biasing force of the U-shaped spring 410. By this, the U-shaped spring 410 is elastically deformed (pushed out), and the wedge members 416 and 418 are pressed against the to-be-clamped surfaces GR2 and GR4 by their restoring force. As a result, a large frictional force is generated between the clamping surfaces 416A and 418A of the wedge members 416 and 418 and the clamping surfaces GR2 and GR4 of the guide rails GR to brake the car.

  In the safety device 400 having the above-described configuration, immediately after the wedge members 416 and 418 are pulled up, a frictional force sufficient to push and spread the U-shaped spring 410 according to the wedge principle is applied to the clamping surfaces 416A and 418A. It is important to bring the entire surfaces of the clamping surfaces 416A and 418A into contact with the clamping surfaces GR2 and GR4 in order to form the clamping surfaces GR2 and GR4.

  However, when the safety gear 400 is attached to the car as it is, the safety gear 400 is slightly inclined from the horizontal direction due to manufacturing variations, and the upper side or lower side of the tightening surfaces 416A, 418A. There may be a situation where only the part is in contact with the tightening surfaces GR2 and GR4. In this case, by interposing a shim between the upper plate 402 and the lower beam LB2 or between the upper plate 402 and the lower beam LB4, the safety gear 400 can be used as a cage in the state where the inclination from the horizontal direction is eliminated. It can cope by installing it.

Japanese Patent Application Laid-Open No. 4-116078 Unexamined-Japanese-Patent No. 11-199159 gazette JP 2008-94606 A

  However, the guide rail GR may be slightly twisted in a partial section in its length direction, and in the section where this twisting occurs, even if the safety gear 400 operates, the wedge members 416 and 418 The clamping surfaces 416A and 418A contact only one of the longitudinal sides, and a sufficient frictional force is generated between the clamping surfaces GR2 and GR4 to expand the U-shaped spring 410. do not do.

  Even in such a case, if the wedge members 416 and 418 are formed of a relatively soft resin mold material, they are worn away by friction with the surfaces to be tightened GR2 and GR4, and the contact area gradually increases. Although frictional force may be obtained, the wedge members 416 and 418 are made of a wear resistant material harder than the guide rails GR to prevent the wedge members 416 and 418 from being worn away in a high speed and large capacity elevator. It may be formed of (for example, engineering ceramics).

  When formed of a wear resistant material, the clamping surfaces 416A and 418A of the wedge members 416 and 418 contact only one of the longitudinal side portions, and between the clamping surfaces GR2 and GR4. The braking distance of the car is unnecessarily long because sufficient frictional force is not generated to expand the U-shaped spring 410.

  In addition, the above-mentioned subject is common also to the safety gear attached to the balance weight connected with the main rope by the main rope.

  SUMMARY OF THE INVENTION In view of the above-described problems, according to the present invention, for example, even if the guide rail is twisted, the wedge member makes full contact as soon as possible from the time point when the wedge member starts contacting the fastened surface of the guide rail. It is an object of the present invention to provide a safety gear for elevators that can

  In order to achieve the above object, the safety device for an elevator according to the present invention is attached to a lifting body of the elevator and guides two lifting surfaces of guide rails vertically guiding the lifting body between the two parallel clamping surfaces. In the emergency stop device for clamping the two to-be-clamped surfaces in an emergency by clamping the two to-be-clamped surfaces with a pair of brakes arranged with a gap from the to-be-clamped surfaces. And at least one of the brakes is inclined so as to move away from the tightening surface as it goes downward from the tightening surface opposite the corresponding tightening surface and the tightening surface. And a wedge receiving member having a guide surface facing the inclined surface and having a guide surface parallel to the inclined surface, the wedge receiving member being moved upward at the time of emergency The inclined surface is guided by the guide surface It is an emergency stop device in which the wedge member is inclined toward the guide rail, and the clamping surface is in contact with the clamping surface, and the clamping surface extends across before and after contacting the clamping surface. Preferably, the clamping surface is horizontally swingable about at least a virtual vertical axis.

  Further, the wedge member has a first member including the tightening surface and a second member including the inclined surface, and the first member can swing at least in the horizontal direction with respect to the second member. It is characterized in that it is provided in

  Alternatively, the wedge receiving member has a first member and a second member, the first member includes the guide surface, and the first member swings at least in the horizontal direction with respect to the second member. It is characterized in that it is freely provided.

  Furthermore, the first member and the second member are connected by connection means that allows the horizontal swing of the first member with respect to the second member.

In this case, the connection means can be configured as any of the following (i) to (iv).
(i) a semi-cylindrical recess formed on one of the first member and the second member and having the axis in the vertical direction, and a semi-cylindrical recess provided on the other and adapted to the semi-cylindrical recess A columnar convex portion having a cylindrical surface and fitted in the semi-cylindrical concave portion, and the first sliding member relative to the second member by relative sliding between the semi-cylindrical concave portion and the columnar convex portion; The member may be swingable in the horizontal direction.

  (ii) the first connecting member is a first semi-cylindrical recess having an axis in the vertical direction formed on the first member; and the second member has an axis in the vertical direction; A first semi-cylindrical recess facing the first and second semi-cylindrical recesses, and a cylindrical body fitted into the first and second semi-cylindrical recesses; The first member is configured to be able to swing in the horizontal direction with respect to the second member by relative sliding of the two semi-cylindrical recesses.

  (iii) The connecting means is formed on one of the first member and the second member, and has a spherical recess recessed in the horizontal direction, and a spherical surface provided on the other and adapted to the spherical recess, the spherical The first member is further perpendicular to the second member relative to the second member due to relative sliding between the spherical recess and the spherical protrusion, including a spherical protrusion fitted in the recess; Be able to swing freely in any direction.

  (iv) The first connecting member is formed in the first member, and is formed in the first spherical recess recessed in the horizontal direction, and formed in the second member, recessed in the horizontal direction, and facing the first spherical recess. A spherical recess and a sphere fitted in the first and second spherical recesses, the relative sliding of the first spherical recess and the second spherical recess on the sphere causes the second member to move relative to the second member The first member may be configured to be swingable in any direction from the horizontal direction to the vertical direction.

  According to the safety gear for an elevator having the above configuration, the inclined surface of the wedge member moved upward in an emergency is guided by the guide surface, and the wedge member is inclined toward the guide rail, and the wedge member is Assuming that the guide rail is twisted when the tightening surface of the guide rail comes into contact with the surface to be tightened of the guide rail, one of the end portions of the both end portions in the horizontal direction is first tightened Abuts on the surface.

  At this time, due to the upward movement of the wedge member and the upward friction force that the one end receives from the to-be-clamped surface due to the fact that the car continues to descend in an emergency, the clamping surface In order to reduce the distance between the surface and the surface to be fastened, the one end presses the surface to be fastened, and the one end receives the reaction force.

  In this case, the clamping surface is configured to be capable of swinging in the horizontal direction at least about the virtual vertical axis, before and after the clamping surface contacts the clamping surface. The clamping surface receives the reaction force, and immediately shakes the neck so that the other end opposite to the one end approaches the clamped surface, so that the clamping surface It will be in contact with the surface to be tightened on the entire surface. That is, according to the safety device for an elevator according to the present invention, it is possible to make the entire surface contact state as soon as possible from the time when the wedge member starts contact with the surface to be tightened of the guide rail.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows schematic structure of the elevator provided with the safety gear apparatus for elevators which concerns on Embodiment 1. FIG. (A) is a front view in the state where the above-mentioned safety gear was attached to a car, and (b) is a sectional view on the AA line in (a). (A) is an enlarged end view taken along the line BB in FIG. 2 (b), (b) is a cross-sectional view taken along the line CC in (a), and (c) is a column member It is a perspective view. (A) is the front view which cut | disconnected and represented a part of safety device which concerns on Embodiment 2, (b) is the EE sectional view taken on the line in (a). It is a GG line cutting part enlarged sectional view in FIG. 4 (a). FIG. 10 is a front view showing a schematic configuration of a safety gear according to a third embodiment. (A) is a longitudinal cross-sectional view which shows schematic structure of a pair of wedge member which comprises the safety gear which concerns on Embodiment 3, (b) is the HH sectional view taken on the line in (a). (A) is a front view of the safety gear according to Embodiment 4 in which one of a pair of wedge receiving members is shown in a cross section, and (b) is a cross-sectional view taken along the line JJ in (a). . (A) is a front view which shows schematic structure of the safety gear which concerns on Embodiment 5 which represented one side of a pair of wedge receiving members in the cross section, (b) is in the state except the half of the upper plate. It is a top view which shows schematic structure of the same emergency stop device represented. (A) is a front view which shows schematic structure of the emergency stop apparatus which concerns on Embodiment 6, (b) represents only the attachment plate which is a constituent member of the same emergency stop apparatus, a shaft, and a block body. It is a top view. It is a front view which shows schematic structure of the conventional emergency stop apparatus.

Hereinafter, an embodiment of a safety device for an elevator according to the present invention will be described with reference to the drawings.
First Embodiment
[Entire elevator]
As shown in FIG. 1, in the elevator 10, a machine room 14 is provided in a building portion above the top of the hoistway 12 opened in the building, and in the machine room 14, a hoisting machine 16 is provided. is set up.

  A main rope 20 is wound around a main sheave 18 constituting the hoisting machine 16, and one end of the main rope 20 is a car 22 which is one elevating body, and the other end is the other elevating body The counterweights 24 are respectively connected.

  In the hoistway 12, a pair of car guide rails 26 for guiding the car 22 in the vertical direction and a pair of counterweight guide rails 28 for guiding the counterweight 24 in the vertical direction are laid in the vertical direction. It is done. In the drawing, only one of the pair of car guide rails 26 and one of the pair of counterweight guide rails 28 appear.

  A pair of guide roller units 30, 32 are attached to upper and lower end portions of the car 22 in correspondence with the pair of car guide rails 26, and the car 22 is vertically oriented by these guide roller units 30, 32. You will be guided to Similarly, a pair of guide roller units 34 and 36 are attached to the upper and lower end portions of the counterweight 24 corresponding to the pair of counterweight guide rails 28, and these guide roller units 34 and 36 are attached. Thus, the counterweight 24 is guided in the vertical direction.

  In the lower part of the car 22, a pair of emergency stop devices 40 are additionally provided corresponding to the pair of car guide rails 26, and in the lower part of the counterweight 24, a pair of counterweights are provided. A pair of emergency stop devices 42 are attached to correspond to the weight guide rails 28. The safety devices 40 and 42 are lowered by firmly tightening the car guide rail 26 and the counterweight guide rail 28 with a pair of wedge members 86 and 88 (FIGS. 2 and 3) described later. It is a device for braking the car 22 or the counterweight 24.

  In parallel with the main rope 20, a governor rope 44 is stretched by a governor sheave 48 and a tension sheave 50 of the car governor 46. In the middle portion of the governor rope 44, an emergency stop lever 52 for operating the emergency stop device 40 attached to the car 22 is fixed. The car governor 46 also has a gripping mechanism 54 for gripping a part of the governor rope 44 traveling between the governor sheave 48 and the tension sheave 50 and stopping the traveling thereof.

  Similar devices are also provided on the counterweight 24 side. That is, in parallel with the main rope 20, the governor rope 62 is stretched between the governor sheave 58 and the tension sheave 60 of the balancing weight governor 56, and in the middle portion of the governor rope 62, the balancing weight 24 is An emergency stop lever 64 for operating the emergency stop device 42 attached thereto is fixed. The counterweight governor 56 has a gripping mechanism 66 for gripping a part of the governor rope 62 traveling between the governor sheave 58 and the tension sheave 60 and stopping the traveling thereof.

  In the elevator 10 having the above configuration, when rotational power from a motor (not shown) is transmitted to the main sheave 18 via a power transmission mechanism (not shown) and the main sheave 18 is rotationally driven, it is connected to the main rope 20 The elevator car 22 and the counterweight 24 are guided by the car guide rails 26 and the counterweight guide rails 28, respectively, and are raised and lowered in the hoistway 12. Along with this, each of the governor ropes 44 and 62 to which the safety locking levers 52 and 64 are fixed respectively travels, and the governor sheave 48 has the same speed (circumferential speed) as the elevator 22 lifts and the governor sheave 58 has the counterweight 24 At the same speed (circumferential speed) as the lifting speed of

  The car governor 46 detects the rotational speed of the governor sheave 48 synchronized with the elevation speed of the car 22, and when the car 22 falls below the rated speed, the descent speed does not exceed 1.4 times the rated speed. Then, the governor rope 44 is gripped by the gripping mechanism 54, and the traveling of the governor rope 44 is stopped. Here, the rotational speed of the governor sheave 48 corresponding to the descent speed at which the governor rope 44 is gripped by the gripping mechanism 54 is referred to as "overspeed".

  When traveling of the governor rope 44 is stopped even though the car 22 continues to descend, the safety lever 52 fixed to the governor rope 44 is pulled up relative to the car 22. A known mechanism (not shown) interlocking with the pulling-up operation of the safety locking lever 52 is provided between the safety locking lever 52 and the safety locking device 40, and when the safety locking lever 52 is pulled up, the mechanism is The safety gear 40 is activated. The mechanism by which the emergency stop device 42 attached to the counterweight 24 is operated is the same as the above-described mechanism described for the case where the emergency stop device 40 attached to the car 22 is activated, and thus the description thereof will be omitted. .

[Safety stop device]
As described above, the details of the safety devices 40 and 42 that operate in an emergency will be described. Here, "emergency" refers to a period until the car 22 and the balance weight 24 stop after the governors 46 and 56 detect overspeed, and "general" refers to the governor. It is assumed that 46 and 56 do not detect overspeed, and at least stop of the cage 22 and the counterweight 24 by the safety gear 40 and 42 is unnecessary.

  The safety gear 40 for the car 22 and the safety gear 42 for the counterweight 24 have basically the same configuration, so that the safety gear 40 for the car 22 will be described in detail as a representative. The detailed description of the safety gear 42 for the counterweight 24 is omitted.

  The safety gear device 40 is a safety gear device of the up-and-down type, and as shown in FIG. 2A, for example, a car frame (not shown in its entirety) which is a component of the car 22 (FIG. 1). It is attached to the lower beams 70A and 70B which comprise.

  The safety device 40 has an upper plate 72 and a lower plate 74. The upper plate 72 and the lower plate 74 are connected by a pillar member (not shown) at a constant interval in the vertical direction, and the upper plate 72 is connected to the lower beams 70A and 70B by bolts and nuts (not shown). It is fixed. Stepped step portions 72A, 72B, 74A, 74B are formed at both ends of the upper plate 72 and the lower plate 74, respectively.

  The safety device 40 includes a pair of wedge receiving members 76 and 78 which are attached to the step portions 72A, 72B, 74A and 74B by U-shaped springs 80 described later. As shown in FIG. 2A, the wedge receiving members 76 and 78 have ridges 76A, 76B, 78A and 78B at upper and lower end portions, and the ridges 76A, 76B, 78A and 78B have stepped portions 72A. , 74A, 72B, and 74B, and are arranged to face each other.

A U-shaped spring 80 which is U-shaped in a plan view is provided so as to grip the wedge receiving members 76 and 78 from the left and right sides in FIGS. 2 (a) and 2 (b). In FIG. 2 (b), the lower plate 74 is not shown. Through holes 80A and 80B are provided at both end portions of the U-shaped spring 80, and hemispherical heads 82B and 84B are formed at one end of the shafts 82A and 84A in each of the through holes 80A and 80B. Shafts 82A and 84A of the pressing tools 82 and 84 which are formed are inserted.
On the side surfaces of the wedge receiving members 76 and 78, hemispherical recesses 76C and 78C are formed, and the heads 82B and 84B of the pressing members 82 and 84 are fitted into the recesses 76C and 78C, respectively.

  According to the above configuration, the wedge receiving members 76 and 78 are always urged in a direction to approach each other by the U-shaped spring 80 via the pressing tools 82 and 84, and in the normal state, the wedge receiving member 76, In the case 78, the wedge portions 76A, 76B, 78A, 78B are pressed (contacted) by the step portions 72A, 74A, 72B, 74B, and the distance between the two wedge receiving members 76, 78 is maintained constant. .

  Between the pair of wedge receiving members 76, 78, the parallel clamped surfaces 26A, 26B of the guide rail 26 for guiding the elevation of the car 22 (FIG. 1) are interposed therebetween, and the corresponding clamped surfaces 26A, 26B. And a wedge member 86, 88, which is a pair of brakes. The to-be-clamped surfaces 26A, 26B are also guide surfaces on which the guide rollers (not shown) of the guide roller units 30, 32 (FIG. 1) roll to guide the car 22 in the vertical direction.

  The wedge member 86 and the wedge member 88 have basically the same configuration. Therefore, the wedge member 86 will be described as a representative, and the components corresponding to the wedge member 86 in the wedge member 88 will be given the same reference numerals, and the description thereof will be omitted.

The wedge member 86 is roughly divided into a first member 90 and a second member 92, and the first member 90 and the second member 92 are connected by a connecting means 94 (FIG. 3). There is.
The first member 90 is composed of a square plate-shaped braking pad 96 made of an engineering ceramic excellent in wear resistance and a rectangular backup plate 98 made of a metal material. The braking pad 96 and the backup plate 98 are firmly bonded by an adhesive (not shown). In the braking pad 96, the surface of the guide rail 26 that faces the to-be-clamped surface 26A is a clamping surface 96A that contacts the to-be-clamped surface 26A in an emergency.

  The second member 92 is a block body made of a metal material which has a trapezoidal shape in a front view shown in FIG. In the wedge member 86, a surface 92A of the second member 92 opposite to the tightening surface 96A of the first member 90 is formed into an inclined surface 92A inclined so as to be away from the tightening surface 96A as it goes downward. There is. The second member 92 and the wedge receiving member 78 are connected by a connection means (not shown) similar to known connecting means for connecting the wedge member and the wedge receiving member in a conventional safety gear. There is.

  At one side 92B of the second member 92, one end of a pull-up rod (not shown) which is pulled up interlockingly with the safety lever 52 (FIG. 1) is fixed in an emergency. The rod positions the second member 92 in the position shown in FIG. 2 (i.e., the normal position).

The connection means 94 for connecting the second member 92 and the first member 90 will be described with reference to FIG.
The connecting means 94 has a column member 100 including a semi-cylindrical portion 102 and a prism portion 104 as shown in FIG. 3 (c).

  The back-up plate 98 is provided with a square hole 98A in which the square column portion 104 fits, and the column member 100 is fixed to the backup plate 98 with the square column portion 104 fitted in the square hole 98A. This fixing may be performed by press-fitting, or an adhesive may be used. As a result, the backup plate 98 is provided with a columnar convex portion having a cylindrical surface 102A.

  On the other hand, the second member 92 has a semi-cylindrical surface fitted to the cylindrical surface 102A of the semi-cylindrical portion 102, and a groove-shaped semi-cylindrical recess 92C extending in the vertical direction is formed. The semi-cylindrical portion 102 is fitted in the semi-cylindrical recess C so as to be slidable in the circumferential direction. Thereby, the first member 90 (fastening surface 96A) is horizontally swingable around the axis (the axis of the semi-cylindrical recess C) of the semi-cylindrical portion 102 which is the virtual vertical axis, ie, Be able to swing horizontally.

  A pair of brazing pins 106 and 108 and a pair of compression coil springs 110 and 112 are provided so that the first member 90 does not fall off the second member 92 while maintaining this swingable state. Each of the hooked pins 106 and 108 has a hook 106B and 108B at one end of the pin 106A and 108A.

  In the second member 92, the small holes 114A and 116A and the large holes 114B communicating therewith are provided on both sides of the semi-cylindrical concave portion 92C at the central portion in the lengthwise direction of the semi-cylindrical portion 102 (semi-cylindrical concave portion C). , 116B are opened.

  In each of the pin insertion holes 114 and 116, as shown in FIG. 3B, brazing pins 106 and 108 having compression coil springs 110 and 112 extrapolated to the pins 106A and 108A are respectively inserted. End portions of the pins 106A and 108A protruding from the holes 114A and 116A are press-fit into the holes 118 and 120 formed in the backup plate 98. In the state shown in FIG. 3B, the compression coil springs 110 and 112 are compressed between the step portions of the small holes 114A and 116A and the large holes 114B and 116B and the weirs 106B and 108B.

  As a result, the first member 90 is always attracted to the second member 92 by the restoring force of the compression coil springs 110 and 112, so that the state in which the semi-cylindrical portion 102 is fitted in the semi-cylindrical recess C can be maintained. The member 90 does not fall off the second member 92.

  Further, since the gap D1 is provided between the first member 90 and the second member 92, the first member 90 can swing (swing) with respect to the second member 92 in this range. There is.

  In this case, when the first member 90 swings from the state shown in FIG. 3B, the brazing pins 106 and 108 become oblique to the corresponding pin insertion holes 114 and 116, but the brazing pin 106 , 108 so that the rocking range of the first member 90 is not unnecessarily narrowed by contacting the inner wall of the pin insertion holes 114, 116, the diameter of the pins 106A, 108A and the small holes 114A, 116A. The size relationship between the diameter of the large holes 114B and 116B and the diameter of the large holes 114B and 116B are set. Also, in normal operation, even if the first member 90 swings to the maximum, the corners at both ends in the horizontal direction of the first member 90 (the braking pad 96) may abut on the to-be-clamped surface 26A of the guide rail 26. The size or the like of the gap D1 is set so as not to occur.

  The compression coil springs 110 and 112 may be used as long as the first member 90 can be pulled to such an extent that the first member 90 does not fall off the second member 92, and the first member 90 can easily swing. As long as it has a small spring constant, it is used. The biasing means for resiliently biasing the flanged pins 106 and 108 is not limited to the compression coil springs 110 and 112, but may be, for example, cylindrical urethane rubber. Further, in place of the flanged pins 106 and 108, a male screw or a bolt having a head may be used.

  Furthermore, since it does not matter if at least the above-mentioned detachment can be prevented, it is not necessary to necessarily provide biasing means such as the compression coil springs 110 and 112 or the like. In this case, in the brazing pins 106 and 108, the total length of the pins 106A and 108A is shortened, and the distance between the step between the small holes 114A and 116A and the large holes 114B and 116B and the ridges 106B and 108B is approximately the gap D1. It should be the same size.

  Returning to FIG. 2, in the wedge receiving members 76 and 78, inclined surfaces parallel to the inclined surface 92A (hereinafter referred to as “guide surfaces”, respectively) of surfaces of the wedge members 88 and 86 opposite to the inclined surface 92A of the second member 92. 76D and 78D), and between the guide surfaces 76D and 78D and the corresponding inclined surfaces 92A, respectively, a plurality of rollers 122 and 124 held by holders (not shown) are provided. ing.

  In the emergency stop device 40 configured as described above, when the wedge members 86, 88 (both second members 92) are pulled up by the pull-up rod (not shown) in an emergency, the wedge members 86, 88 (both second members) 92) are guided to the guide surfaces 78D and 76D via the rollers 124 and 122, and skew toward the guide rail 26, and eventually both clamping surfaces 96A contact the clamped surfaces 26A and 26B, respectively. .

  In an emergency, since the car continues to descend, the frictional force generated between the two acts on the clamping surfaces 96A in contact with the clamping surfaces 26B and 26A. Then, by the “wedge principle (wedge boosting effect)”, the wedge members 86 and 88 displace the wedge receiving members 76 and 78 outward in the left and right direction against the biasing force of the U-shaped spring 80. As a result, the U-shaped spring 80 is elastically deformed (pushed out), and the restoring force pushes the wedge members 86, 88 against the surfaces 26A, 26B. As a result, a large frictional force is generated between the clamping surfaces 96A of the wedge members 86 and 88 and the clamping surfaces 26A and 26B of the guide rail 26 to brake the car 22 (FIG. 1).

  In the safety device 40 having the above-described configuration, as described above, immediately after the wedge members 86 and 88 are pulled up, the friction principle is sufficient to quickly expand the U-shaped spring 80 according to the wedge principle. In order to form between the surface 96A and the surfaces 26A and 26B, it is important to bring the entire surfaces of both the surfaces 26A and 26B into contact with the surfaces 26A and 26B.

  However, the guide rail 26 may be slightly twisted in a partial section in its length direction. For example, as shown by an alternate long and short dash line in FIG. 3 (b) (in FIG. 3 (b), the degree of twist is drawn more exaggerated than it may actually occur. ). When the safety gear 400 described in Patent Document 1 is operated in the section where the twisting occurs, the braking distance is unnecessarily increased for the above-described reason.

  Also in the safety device 40 according to the first embodiment, if the guide rail 26 is twisted as described above, in the wedge member 86, one longitudinal side 96B of the tightening surface 96A of the braking pad 96 First, it abuts against the surface 26A to be tightened. However, since the distance between the clamping surface 96A and the clamping surface 26A is shortened by pulling up the wedge member 86 or the upward frictional force that the longitudinal side portion 96B receives from the clamping surface 26A, the longitudinal side is reduced. The portion 96B presses the to-be-clamped surface 26A, and the reaction force causes the braking pad 96 (first member 90) to move horizontally about the axis of the semi-cylindrical portion 102 (in this example, FIG. 3B). In the clockwise direction (swinging of the neck), and immediately, the entire surface of the clamping surface 96A comes into contact with the clamping surface 26A.

  As a result, the U-shaped spring 80 is spread between the clamping surface 96A of the wedge member 86 and the clamping surface 26A (as well as between the clamping surface 96A of the wedge member 88 and clamping surface 26B). The braking distance of the car 22 can be shortened as much as possible compared to the safety gear 400 (FIG. 11) of Patent Document 1 because a sufficient frictional force is generated quickly.

  Finally, the cage 22 is stopped by the wedge members 86 and 88 tightening the guide rails 26 by the restoring force of the U-shaped spring 80 which has been spread. From the state shown in FIG. 2 (b), the U-shaped spring 80 which has been spread is opened in the form of a "C" at both end portions.

  In order to make this "C" -shaped opening movement smooth (in order not to impede the "C-shaped opening movement"), the restoring force of the U-shaped spring 80 is received by the wedge receiving member 76 via the pressing members 82, 84. , 78 are supposed to act. That is, even if the U-shaped spring 80 opens in the above-mentioned "C" shape, the heads 82B and 84B of the pressing members 82 and 84 slide against the recesses 76C and 78C formed in the wedge receiving members 76 and 78. Thus, the U-shaped spring 80 secures the movement to open in a "C" shape while maintaining the postures of the wedge receiving members 76, 78.

  By the way, the pressing tools 82 and 84 are also common in that they are provided in order to allow the relative posture change between the two members, similarly to the connecting means 94 (the column member 100). That is, the column member 100 allows a change in relative posture between both the braking pads 96 (both clamping surfaces 96A) and the guide rails 26 (surfaces to be clamped 26A, 26B), and the pressing tools 82, 84 , And allows changes in the relative attitude between the wedge receiving members 76, 78 and (the end portions of) the U-shaped spring 80.

  However, the pressing tools 82 and 84 and the column member 100 differ in the specific function and the phase in which the function is required. As is clear from the above description, the pressing tools 82 and 84 require that their function be exhibited when the U-shaped spring 80 is pushed out, and the column member 100 mainly has a U-shaped configuration. It is necessary that the function be exhibited until the spring 80 is pushed apart.

  The emergency stop apparatus 400 (FIG. 11) described in Patent Document 1 also includes the pressing tools 412 and 414 similar to the safety fitting apparatus 40 according to the first embodiment, but depending on the pressing tools 412 and 414 It is obvious that the surfaces 416A, 418A are not made horizontally swingable (slidable) before coming into contact with the clamped surfaces GR2, GR4. For this reason, if the guide rail GR is twisted, the wedge members 416 and 418 are pulled up, and the clamping surfaces 416A and 418A do not contact the clamping surfaces GR2 and GR4 over the entire surface, so the braking distance is extended. is there.

On the other hand, in the safety device 40 according to the first embodiment, both tightening surfaces 96A have necks in the horizontal direction as described above before and after the both tightening surfaces 96A contact the to-be-clamped surfaces 26A and 26B. Since it is configured to be swingable (swingable), contact with the surfaces 26A and 26B on the entire surface of both tightening surfaces 96A is realized immediately after the start of contact. The braking distance of the car can be shortened compared to the safety gear 400 described in Patent Document 1.
In addition, both tightening surfaces 96A are completely tightened even after the tightening of the guide rails 26 by the wedge members 86 and 88 is started by the restoring force of the U-shaped spring 80 which is spread out and the car 22 is stopped. Since the contact with the surface 26A, 26B is continued, this also makes it possible to shorten the braking distance of the car and to reliably maintain the stopped state of the car 22.

Second Embodiment
The safety gear 130 according to the second embodiment will be described with reference to FIGS. 4 and 5.
In the first embodiment, the wedge members 86 and 88 are divided into the first member 90 and the second member 92, and the first member 90 and the second member 92 are connected by the connection means 94 including the column member 100. By doing this, both clamping surfaces 96A are made swingable (swingable) in the horizontal direction (FIG. 2, FIG. 3). On the other hand, in the safety device 130 according to the second embodiment, the wedge receiving members 136 and 138 are respectively divided into the first member 144 and the second member 146, and the first member 144 and the second member 146 Are connected by the connection means 148, so that the tightening surfaces 140A of the two brake pads 140 can swing in a horizontal direction.

  The safety gear 130 of the second embodiment is basically the same as the safety gear 40 (FIGS. 2 and 3) of the first embodiment except for the points described above. Therefore, in FIGS. 4 and 5, substantially the same components as those of the safety gear 40 of the first embodiment are given the same reference numerals, and the description thereof will be omitted or simply mentioned below. The explanation will focus on the different parts.

  As shown in FIG. 4, the safety device 130 also has a pair of wedge members 132 and 134 and a pair of wedge receiving members 136 and 138 on both sides of the surfaces 26A and 26B of the guide rail 26. ing. The wedge member 132 and the wedge member 134, and the wedge receiving member 136 and the wedge receiving member 138 have basically the same configuration. Therefore, the wedge member 132 and the wedge receiving member 136 will be described as a representative, and for the wedge member 134 and the wedge receiving member 138, the same reference numerals are given to the components corresponding to the wedge member 132 and the wedge receiving member 136, respectively. The explanation is omitted.

  The wedge member 132 comprises a braking pad 140 and a backup block 142. The braking pad 140 is a square plate made of engineering ceramics having excellent wear resistance, as with the braking pad 96 (FIGS. 2 and 3). The backup block 142 is a block body made of a metal material which has a trapezoidal shape in a front view shown in FIG. 4 (a). The braking pad 140 and the backup block 142 are firmly bonded by an adhesive (not shown).

  In the braking pad 140, the surface of the guide rail 26 that faces the to-be-clamped surface 26A is a clamping surface 140A that contacts the to-be-clamped surface 26A in an emergency. In the backup block 142, a surface 142A opposite to the braking pad 140 is formed as an inclined surface 142A inclined away from the tightening surface 140A as it goes downward. Note that one end of the pull-up rod (not shown) that is pulled up interlockingly with the safety lever 52 (FIG. 1) is fixed to the backup block 142.

  The wedge receiving member 136 includes a first member 144 and a second member 146, and the first member 144 and the second member 146 are connected by connection means 148 (FIG. 5). The first member 144 and the second member 146 are shaped such that the wedge receiving member 78 shown in FIG. 2 in the first embodiment is roughly divided into two in the left and right.

  The first member 144 is a block body made of a metal material which has an inverted trapezoidal shape in a front view shown in FIG. 4A. The surface of the first member 144 opposite to the inclined surface 142A of the wedge member 132 via the roller 124 is formed as an inclined surface (guide surface 144A) parallel to the inclined surface 142A. The first member 144 and the wedge member 132 are connected by the same connection means (not shown) as the known connection means for connecting the wedge receiving member and the wedge member in the conventional safety gear. .

  A hemispherical recess 146C is formed on the side surface of the second member 146, and the head 84B of the pressing member 84 is fitted into the recess 146C.

  Similar to the wedge receiving member 78 (FIG. 2A) in the first embodiment, as shown in FIG. 4A, the second member 146 has hooks 146A and 146B at the upper and lower ends, and has a hook shape. The portions 146A and 146B are pressed against the step portions 72B and 74B by the biasing force of the U-shaped spring 80.

The connection means 148 for connecting the second member 146 and the first member 144 will be described with reference to FIGS. 4 (a) and 5. FIG.
The connection means 148 has a cylindrical member 150 made of a metal material. The cylindrical member 150 is a solid cylindrical body in the illustrated example, but may be a hollow cylindrical body.

  The first member 144 is formed with a first semi-cylindrical recess 144B having an axial center in the vertical direction, and a half of the cylindrical member 150 fits into the first semi-cylindrical recess 144B. The second member 146 also has a second semi-cylindrical recess 146D having an axis in the vertical direction and facing the first semi-cylindrical recess 144B, and the second semi-cylindrical recess 146D is a cylindrical member Less than half of 150 is stuck. As a result, the first member 144 and hence the tightening surface 140A of the braking pad 140 of the wedge member 132 can swing in a horizontal direction about the axis of the cylindrical member 150, which is an imaginary vertical axis. ).

  A pair of brazing pins 152 and 154 and a pair of compression coil springs 156 and 158 are provided so that the first member 144 does not drop out of the second member 146 while maintaining this swingable state. The basic concept of the manner of attachment of the flanged pins 152 and 154 and the compression coil springs 156 and 158 to the first member 144 and the second member 146 is the flanged pins 106 and 108 and compression described in the first embodiment. It is similar to the manner of attaching the coil springs 110 and 112 to the first member 90 (backup plate 98) and the second member 92 (FIG. 3 (b)), and therefore will be described briefly.

  In the first member 144, a pin insertion hole 160 including small holes 160A and 162A and large holes 160B and 162B communicating with the small holes 160A and 162A on both sides of the cylindrical member 150 in the lengthwise direction of the cylindrical member 150 and the central portion thereof. , 162 have been established.

  In each of the pin insertion holes 160 and 162, the pins 152A and 154A are inserted with the brazing pins 152 and 154 having compression coil springs 156 and 158 extrapolated to the pins 152A and 154A, respectively, and protruding from the small holes 160A and 162A. The end portion of 154 A is press-fit into holes 168 and 170 formed in the second member 146.

  As a result, the first member 144 is always pressed toward the second member 146 by the restoring force of the compression coil springs 156 and 158, so that the cylindrical member 150 can be maintained in a state of being fitted in both semicylindrical recesses 144B and 146D. The first member 144 does not fall off the second member 146. In addition, since the gap D2 is provided between the first member 144 and the second member 146, the first member 144 can swing (slidable) relative to the second member 146 in this range. ing.

  The size and the like of the gap D2 are set under the same principle as the size and the like of the gap D1 (FIG. 3B) of the first embodiment. The relationship between the diameter of the pins 152A and 154A and the diameter of the small holes 160A and 162A and the relationship between the diameter of the weirs 152B and 154B and the diameter of the large holes 160B and 162B are the same as the diameter of the pins 106A and 108A in the first embodiment. It is set under the same policy as the size relationship between the diameters of the holes 114A and 116A and the diameter relationship between the diameters of the weirs 106B and 108B and the diameters of the large holes 114B and 116B.

Further, the spring constants of the compression coil springs 156 and 158 are also set under the same pointer as that of the compression coil springs 110 and 112 of the first embodiment.
As in the first embodiment, a cylindrical urethane rubber or the like may be used instead of the compression coil springs 156 and 158. Further, the compression coil springs 156 and 158 need to be provided. It is also the same as the case of the first embodiment that there is no.

  In the emergency stop device 130 configured as described above, in an emergency, when both wedge members 132 and 134 are pulled up, both clamping surfaces 140A are in contact with the to-be-clamped surfaces 26A and 26B. Since 140A is configured to be horizontally swingable (swingable) about the axial center of the cylindrical member 150 which is an imaginary vertical axis, both clamps can be tightened immediately after the contact is started. The contact with the to-be-clamped surfaces 26A and 26B on the entire surface 140A can be realized, and the braking distance of the car can be shortened more than the safety gear 400 described in Patent Document 1 in the embodiment described above. Similar to 1.

Embodiment 3
In the first and second embodiments, the tightening surfaces 96A and 140A of the wedge members 86, 88, 132 and 134 are configured to be horizontally swingable (pivotable). It is configured to be swingable in any direction from the horizontal direction to the vertical direction. Therefore, the third embodiment is different from the first and second embodiments in the configuration of the connection means.

The safety gear 180 according to the third embodiment will be described with reference to FIGS. 6 and 7.
The safety gear device 180 basically has the same configuration as the safety gear device 40 (FIGS. 2 and 3) of the first embodiment except that the configuration of the connecting means is different. Therefore, in the safety device 180, substantially the same components as the safety device 40 are denoted by the same reference numerals, and the description thereof will be omitted or simply referred to. Explain to.

  The two wedge members 182 and 184 of the safety gear 180 are basically the same in construction. Therefore, the wedge member 182 will be described as a representative, and the components corresponding to the wedge member 182 in the wedge member 184 will be given the same reference numerals, and the description thereof will be omitted.

The wedge member 182 is roughly divided into a first member 186 and a second member 188, similarly to the wedge member 86 (FIG. 2A) of the first embodiment.
The first member 186 has substantially the same outer shape as the first member 90 (FIG. 2) of the first embodiment. That is, the first member 186 is formed by bonding a rectangular plate-shaped braking pad 190 and a rectangular backup plate 192 with an adhesive (not shown). Also in the braking pad 190, the surface of the guide rail 26 that faces the to-be-clamped surface 26A is a clamping surface 190A that contacts the to-be-clamped surface 26A in an emergency.

  The second member 188 has substantially the same outer shape as the second member 92 (FIG. 2) of the first embodiment. That is, the second member 188 is a block body which has a trapezoidal shape in a front view shown in FIG. 6, and the surface 188A opposite to the tightening surface 190A of the first member 186 moves from the tightening surface 190A as it goes downward. It is formed in the inclined surface 188A which inclined so that it might go away. As in the first embodiment, one end of a pull-up rod (not shown) that is pulled up interlocked with the safety lever 52 (FIG. 1) in an emergency is fixed to the side surface of the second member 188.

The connection means 194 for connecting the second member 188 and the first member 186 will be described with reference to FIG.
In the first embodiment, in order to make the first member 90 swingable (swingable) with respect to the second member 92, the column member 100 (FIG. 3) is used. , And a hemispherical member 196 with a shaft.

The pivoted hemispherical member 196 comprises a cylindrical shaft 198 and a hemispherical head 200. The hinged hemispherical member 196 is formed of a metal material.
A hole 192A in which the shaft portion 198 fits is opened in the thickness direction (horizontal direction) in the backup plate 192, and the shaft portion 198 is fitted in the hole 192A and fixed to the backup plate 192. ing. This fixing may be performed by press-fitting, or an adhesive may be used. As a result, the backup plate 192 is provided with a spherical convex portion (head 200).

  On the other hand, the second member 188 is formed with a spherical recess 188C which is recessed in the horizontal direction in conformity with the spherical surface 200A of the head 200, and the head 200 of the axially mounted hemispherical member 196 can slide in the spherical recess 188C. It is fitted in the state of Thereby, the first member 186 (clamping surface 190A) is perpendicular to the virtual vertical axis passing through the central point from the horizontal direction about the virtual vertical axis passing through the central point of the spherical surface 200A (spherical recess 188C) It is possible to swing (oscillate) in any direction leading to the direction. As described in the first and second embodiments, the swing (rocking) is possible within the range of the gap D3.

  As shown in FIG. 7B, as in the first embodiment, the pair of hooked pins 202 and 204 is configured to prevent the first member 186 from falling off from the second member 188 while maintaining this swingable state. And a pair of compression coil springs 206, 208 are provided. The pair of flanged pins 202 and 204 and the compression coil springs 206 and 208 are horizontally aligned, and provided in the same manner as the pair of flanged pins 106 and 108 and the compression coil springs 110 and 112 in the first embodiment. Exhibit the same function. Therefore, we will only explain briefly.

  The second member 188 is provided with pin insertion holes 210 and 212 formed of small holes 210A and 212A and large holes 210B and 212B communicating with the small holes 210A and 212A on both sides in the horizontal direction sandwiching the hemispherical member 196 with a shaft.

  In each of the pin insertion holes 210 and 212, there are inserted pins 202A and 204A which are inserted with compression coil springs 206 and 208 and extrapolated to the pins 202A and 204A, respectively, and which project from the small holes 210A and 212A. End portions of 204 A are press-fit into holes 214, 216 formed in the first member 186.

  As in the first embodiment, the pair of hooked pins 202 and 204 can prevent the first member 186 from coming off the second member 188, and the guide rails 26 in a normal posture (the guide rails 26 in which no twist occurs). The clamp surface 190A can be maintained parallel to the clamp surface 26A) in the horizontal direction.

  However, in the third embodiment, the first member 186 is configured to be swingable (swingable) in the vertical direction with respect to the second member 188, so the clamping surface 190A is The upper end approaches to the to-be-clamped surface 26A, and the lower end inclines (rocks) so as to move away. Although the size of the gap D3 is set so that the clamping surface 190A does not contact the clamping surface 26A at normal times, even if it is maximally inclined, the clamping surface is assumed in an unexpected situation. 190A is preferably maintained parallel to the clamping surface 26A also in the vertical direction.

Therefore, as shown in FIG. 7A, a pair of brazing pins 218 and 220 and a pair of compression coil springs 222 and 224 are provided on both sides in the vertical direction, with the stemmed hemispherical member 196 interposed therebetween.
The basic idea of the attachment style of the flanged pins 218 and 220 and the compression coil springs 222 and 224 is similar to that of the flanged pins 202 and 204 and the compression coil springs 206 and 208, and therefore, will be briefly described.

  In the second member 188, on both sides in the vertical direction sandwiching the shaft-attached hemispherical member 196, pin insertion holes 226, 228 consisting of small holes 226A, 228A and large holes 226B, 228B communicating therewith are opened.

  In each of the pin insertion holes 226 and 228, there are inserted pins 218A and 220A, in which the flanged pins 218 and 220 having compression coil springs 222 and 224 respectively extrapolated to the pins 218A and 220A are respectively inserted and project from the small holes 226A and 228A. The end portion of 220 A is press-fit into the holes 230, 232 formed in the first member 186.

  According to the safety gear 180 according to the third embodiment, if the guide rail 26 is twisted (in the state shown by the alternate long and short dash line in FIG. 3 (b)), the safety gear 180 is more preferable than the safety gear 400 described in Patent Document 1. In addition to the same effects as in Embodiments 1 and 2 in which the braking distance of the car can be shortened, the following effects are also achieved.

  As described in [Background Art], when the safety gear 400 (FIG. 11) is attached to a car, the safety gear 400 is slightly inclined from the horizontal direction due to manufacturing variations and the like. The clamping surfaces 416A and 418A of the wedge members 416 and 418 may not be parallel in the vertical direction with respect to the clamping surfaces GR2 and GR4 of the guide rail GR. Therefore, in an emergency, even if both wedge members 416 and 418 are pulled up, only the upper side or the lower side of the clamping surfaces 416A and 418A comes into contact with the clamping surfaces GR2 and GR4. There is a problem that the distance is increased.

  In order to cope with this, as described above, conventionally, the inclination from the horizontal direction is adjusted by sandwiching the shim between the upper plate 402 and the lower beam LB2 or between the upper plate 402 and the lower beam LB4. Above, it is supposed that the safety gear 400 is attached to the car.

  On the other hand, since both clamping surfaces 190A are pivotable in the vertical direction about the virtual horizontal axis passing through the center point of the spherical surface 200A in the head 200 of the hemispherical member 196, in an emergency, For example, when the upper side of the clamping surface 190A abuts against the clamping surface 26A and presses the clamping surface 26A, the clamping surface 190A is the virtual horizontal axis due to the reaction force the upper side receives from the clamping surface 26A. The clamping surface 190A immediately contacts the clamping surface 26A on the entire surface.

  That is, in the third embodiment, the inclination adjustment as in the related art by the shim is not necessary, or the adjustment with high accuracy regarding the parallelism in the vertical direction of both the clamping surface 190A and the clamping surfaces 26A and 26B is necessary. As a result, it is possible to reduce the number of mounting steps of the safety gear to the car than ever before.

Fourth Embodiment
The safety device 240 according to the fourth embodiment will be described with reference to FIG.
In the third embodiment, the wedge members 182 and 184 are configured to be divided in order to allow both clamping surfaces 190A to swing (oscillate) in any direction extending from the horizontal direction to the vertical direction. The wedge receiving members 242 and 244 are divided as in the second embodiment (FIGS. 4 and 5). In the third embodiment, the shaft-attached hemispherical member 196 is used as a component of the connection means 194, but in the fourth embodiment, the spherical body 252 is used.

  The safety gear according to the fourth embodiment is basically the same as the safety gear 130 (FIGS. 4 and 5) of the second embodiment except that the connection means are different. Therefore, in FIG. 8, substantially the same components as the safety gear 130 (FIG. 4, FIG. 5) of the second embodiment are given the same reference numerals, and the description thereof will be omitted or briefly mentioned. The following description will focus on the different parts.

  The two wedge receiving members 242 and 244 in the fourth embodiment have basically the same configuration. Therefore, the wedge receiving member 242 will be described as a representative, and in the wedge receiving member 244, the same reference numerals are given to the components corresponding to the wedge receiving member 242, and the description thereof will be omitted.

The wedge receiving member 242 includes a first member 246 and a second member 248, and the first member 246 and the second member 248 are connected by a connecting means 250.
The first member 246 and the second member 248 have substantially the same outer shape except for the shapes of the surfaces of the first member 144 and the second member 146 in the second embodiment, which face each other.

  That is, the first member 246 is a block body made of a metal material which has an inverted trapezoidal shape in a front view shown in FIG. 8A. The surface 246A of the first member 246 that faces the inclined surface 142A of the wedge member 132 via the roller 124 is formed as an inclined surface (guide surface 246A) parallel to the inclined surface 142A.

A hemispherical recess 248C is formed on the side surface of the second member 248, and the head 84B of the pressing tool 84 is fitted into the recess 248C.
Similar to the wedge receiving member 136 (FIG. 4A) in the second embodiment, as shown in FIG. 8A, the second member 248 has hooks 248A and 248B at the upper and lower ends, and has a hook shape. The portions 248A and 248B are pressed against the step portions 72B and 74B by the biasing force of the U-shaped spring 80.

Next, the connecting means 250 for connecting the second member 248 and the first member 246 will be described.
The connection means 250 has a sphere 252 made of a metal material. In the approximate center of the surface of the first member 246 opposite to the guide surface 246A, a horizontally recessed spherical recess 246B is formed. On the other hand, on the surface of the second member 248 facing the first member 246, a spherical recess 248D which is depressed in the horizontal direction and faces the spherical recess 246B is formed. Then, a half of the spherical body 252 fits into each of the spherical recess 246B and the spherical recess 248D.

  Thereby, the first member 246, and hence the tightening surface 140A of the wedge member 132, is perpendicular from the horizontal direction about the virtual vertical axis passing through the central point of the sphere 252 to the virtual horizontal axis passing through the central point. It can be oscillated (swayable) in any direction that leads to the direction.

  The connecting means 250 has a pair of hooked pins 254 and 256 on both sides in the vertical direction across the ball 252 so that the first member 246 does not fall off from the second member 248 while maintaining this swingable state. And a pair of flanged pins 262 and 264 and a pair of compression coil springs 266 and 268 on both sides of the ball 252 in the horizontal direction.

  The flanged pins 254 and 256 and the compression coil springs 258 and 260 are the same as the flanged pins 218 and 220 and the compression coil springs 222 and 224 (FIG. 7A) of the third embodiment, and the flanged pins 262 and 264 and the compression coil. The springs 258 and 268 are the same as the brazed pins 202 and 204 of the third embodiment and the compression coil springs 206 and 208 (FIG. 7 (b)), although the members to be attached are different, but the attachment modes are similar and similar functions Demonstrate. Therefore, the description is omitted.

  According to the safety device 240 of the fourth embodiment having the above-described configuration, the tightening surface 140A is a virtual horizontal axis passing through the central point of the ball 252 from the horizontal direction centered on the virtual vertical axis. Since it is configured to be swingable (swingable) in any direction extending to the vertical direction as the center, as in the third embodiment, when the guide rail 26 is temporarily twisted, Patent Document 1 discloses The braking distance of the car can be shortened compared to the safety device 400 described, and the conventional inclination adjustment by the shim is not required, or both the clamping surface 140A and the clamping surfaces 26A, 26B It is possible to reduce the number of mounting steps of the safety gear to the car compared to the prior art because it is not necessary to adjust the accuracy in the vertical direction with high accuracy.

Fifth Embodiment
The first to fourth embodiments are emergency stop devices of a type using a U-shaped spring as biasing means for pressing a pair of wedge members against the guide rail, but the emergency stop device 280 according to the fifth embodiment is the biasing means As a type of safety gear using a compression coil spring.

  As shown in FIG. 9, the safety device 280 has an upper plate 282 and a lower plate 284. The upper plate 282 and the lower plate 284 are connected by a pillar member (not shown) at a fixed interval in the vertical direction, and the upper plate 282 is a bolt and a nut (not shown) on the cage 22 (FIG. 1) It is fixed by etc.

  A pair of levers 286 and 288 is rotatably provided on the upper plate 282 and the lower plate 284 via shafts 290 and 292, respectively, about the axes of the shafts 290 and 292. Here, when the levers 286 and 288 "close", the levers 286 and 288 rotate around the shafts 290 and 292 respectively in the direction of the arrow M and the tips of the levers 286 and 288 approach each other. In other words, when the tips of the levers 286 and 288 are separated from each other by pivoting in the opposite direction to the arrow M, both levers 286 and 288 are said to be "open".

  A compression coil spring 294 is provided between the rear end of the lever 286 and the rear end of the lever 288 in a compressed state. A stopper (not shown) is provided at a position indicated by the arrow K so that the levers 286 and 288 do not close due to the restoring force of the compression coil spring 294 more than in the state shown in FIG.

  A pair of wedge receiving members 296 and 298 are provided on the inside (the opposing area of the two tip parts) of the tip parts of both levers 286 and 288, and the roller held by a holder (not shown) is provided inside thereof. A pair of wedge members 304 and 306 are provided via 300 and 302.

  The wedge member 304 and the wedge member 306, and the wedge receiving member 296 and the wedge receiving member 298 have basically the same configuration. Therefore, the wedge member 304 and the wedge receiving member 296 will be described as a representative, and for the wedge member 306 and the wedge receiving member 298, the corresponding parts of the wedge member 304 and the wedge receiving member 296 are given the same numbers, The explanation is omitted.

  The wedge member 304 has the same configuration as the wedge member 132 (FIG. 4) in the second embodiment. That is, the wedge member 304 is a backup made of a block made of a metallic material, which is a square plate of engineering ceramics having excellent wear resistance, and a trapezoidal shape in a front view shown in FIG. 9A. And block 310. The braking pad 308 and the backup block 310 are firmly bonded by an adhesive (not shown).

  In the braking pad 308, the surface of the guide rail 26 facing the clamping surface 26A is the clamping surface 308A in contact with the clamping surface 26A in an emergency, and the backup block 310 is opposite to the braking pad 308 The present surface 308B is formed on an inclined surface 308B which is inclined away from the clamping surface 308A as it goes downward. One end of the pull-up rod (not shown) which is pulled up interlockingly with the emergency stop lever 52 (FIG. 1) is fixed to the backup block 310.

  The wedge receiving member 296 includes a first member 312 and a second member 314, and the first member 312 and the second member 314 are connected by a connecting means 316. The first member 312 and the second member 314 are shaped in such a manner that a block body that is generally in the shape of an inverted trapezoid is substantially divided into two in the front view shown in FIG. 9A. The first member 312 and the second member 314 are made of a metal material.

In the first member 312, a surface opposite to the inclined surface 308B of the wedge member 304 via the roller 300 is formed as an inclined surface (guide surface 312A) parallel to the inclined surface 308B.
The surface of the second member 314 opposite to the first member 312 is the contact surface with the tip portion of the lever 286.

Next, the connecting means 316 for connecting the first member 312 and the second member 314 will be described.
The connection means 316 has a sphere 318 made of a metallic material, similar to the connection means 250 (FIG. 8) in the fourth embodiment.

  In the approximate center of the surface opposite to the guide surface 312A of the first member 312, a horizontally recessed spherical recess 312B is formed. On the other hand, on the surface of the second member 314 facing the first member 312, a spherical recess 314B is formed which is recessed in the horizontal direction and faces the spherical recess 312B. Then, a half of the spherical body 318 is fitted in each of the spherical recess 312B and the spherical recess 314B.

  Thereby, the first member 312, and hence the tightening surface 308A of the wedge member 304, is vertical from the horizontal direction centered on the virtual vertical axis passing through the central point of the sphere 318 to the virtual horizontal axis passing through the central point. It is possible to swing (oscillate) in any direction leading to the direction.

  The connection means 316 connects the upper end portions of the first member 312 and the second member 314 such that the first member 312 and the second member 314 are not separated from each other while maintaining this swingable state. It has an upper connecting member 320 having a rectangular parallelepiped shape, and a lower connecting member 322 having a rectangular parallelepiped shape for connecting lower ends of the first member 312 and the second member 314. The upper connecting member 320 and the lower connecting member 322 are made of soft rubber.

  Thus, by connecting the first member 312 and the second member 314 by the upper connecting member 320 and the lower connecting member 322, the first member 314 and the second member 314 are prevented from being separated from each other. . Further, the first member 312 and the second member 314 are allowed to swing in the vertical direction by being compressed or stretched, and are allowed to swing in the horizontal direction by curving in a bow shape.

  In the emergency stop device 280, in an emergency, when the wedge members 304, 306 are pulled up by the pull-up rod (not shown), the wedge members 304, 306 are guided to the both guide surfaces 312A via the roller 300 to guide Slanting toward the rail 26, the clamping surfaces 308A come into contact with the clamping surfaces 26A and 26B, respectively.

  In an emergency, since the car continues to descend, the frictional force generated between the two acts on the clamping surfaces 308A in contact with the clamping surfaces 26A and 26B. Then, according to the "wedge principle (wedge boosting effect)", the wedge members 304 and 306 resist the biasing force of the compression coil spring 294 via the wedge receiving members 296 and 298, and the tip portions of both levers 286 and 288 Is spread outward, and both levers 286 and 228 are opened.

  As a result, the compression coil spring 294 is further compressed, and its restoring force tends to close both levers 286 and 228. For this reason, the wedge members 304 and 306 are pressed against the fastened surfaces 26A and 26B. As a result, a large frictional force is generated between the clamping surfaces 308A of the wedge members 304 and 306 and the clamping surfaces 26A and 26B of the guide rail 26 to brake the car.

  According to the safety stop device 280 according to the fifth embodiment having the above configuration, both tightening surfaces 308A are virtual horizontal axes passing the center point from the horizontal direction centering on the virtual vertical axis passing through the center point of the sphere 318. , And can be oscillated (oscilable) in an arbitrary direction extending in the vertical direction centering on the same axis as the third embodiment (FIGS. 6 and 7) and the fourth embodiment (FIG. 8). The effect of

Embodiment 6
The emergency stop device according to the first to fifth embodiments is a construction in which a wedge member is used as both of a pair of brakes that clamps the two to-be-clamped surfaces 26A and 26B of the guide rail 26 and brakes the car 22. Although it was a stop device, the safety stop device 330 which concerns on Embodiment 6 is a safety stop device of a structure which used only one of a pair of brakes as a wedge member.

  As shown in FIG. 10, the safety device 330 has a mounting plate 332. The safety plate 330 is attached to the cage 22 with the mounting plate 332 fixed to the lower beams 70A and 70B (FIG. 2) of the cage 22 (FIG. 1) by bolts and nuts (not shown) or the like.

  Both ends of the mounting plate 332 are raised, and a bracket 334 formed of a plate having a U-shape in plan view is fixed. The two end portions of the bracket 334 will be referred to as rising portions 334A and 334B.

  Below the mounting plate 332, a block body 336 having an “L” -shaped cross section is provided so as to be partially surrounded by the bracket 334. In the block body 336, a portion rising at one end of one main surface 336A shown in the figure is referred to as a rising portion 336B.

  A shaft 338 is fixed in the horizontal direction to the lower ends of the rising portions 334A and 334B of the bracket 334. In the lower end portion of the block body 336, a through hole 338A having a loose fit with the shaft 338 is opened, and the shaft 338 is inserted (freely inserted) into the through hole 338A. Thus, the block body 336 is horizontally slidably attached to the mounting plate 332 via the bracket 334 and the shaft 338.

  As shown in FIG. 10A, in the rising portion 336B of the block body 336, three holes 336C penetrating in the horizontal direction are opened in the vertical direction, and in each of the holes 336C A shaft 340 having a 340A is loosely inserted as shown in FIG. 10 (a).

  At the tip of the three shafts 340, a backup plate 342 is fixed.

  A braking pad 344 made of engineering ceramics is fixed to the backup plate 342 on the opposite side of the shaft 340. The backup plate 342 and the braking pad 344 constitute a rectangular block member 341 which is one of the braking elements.

A spacer 346 and a disc spring 348 are extrapolated to the shaft portion between the rising portion 336B of the three shafts 340 and the backup plate 342, respectively.
The wedge receiving member 350 is fixed to the main surface 336A of the block body 336. The wedge receiving member 350 is a block body made of a metal material, which has an inverted trapezoidal shape in a front view shown in FIG.

  A wedge member 354 is provided to the wedge receiving member 350 via a roller 352 held by a holder (not shown).

  The wedge member 354 includes a first member 356 and a second member 358. The first member 356 has the same outline as the first member 182 (FIG. 6) of the third embodiment. That is, the first member 356 is formed by bonding a rectangular plate-shaped braking pad 360 and a rectangular backup plate 362 with an adhesive (not shown). In the braking pad 360, the surface of the guide rail 26 that faces the to-be-clamped surface 26A is a clamping surface 360A that contacts the to-be-clamped surface 26A in an emergency.

  The second member 358 has a form in which a bifurcated leg portion 358A is extended downward from the lower end of the second member 188 (FIG. 6) of the third embodiment. A pin 368 is attached to the leg 358A.

  In the second member 358, the surface 358B opposite to the first member 356 is formed as an inclined surface 358B inclined away from the tightening surface 360A of the first member 356 as it goes downward. In the wedge receiving member 350, the surface opposed to the inclined surface 358B via the roller 352 is a guide surface 350A formed in an inclined surface parallel to the inclined surface 358B as in the previous embodiments.

  In the sixth embodiment, a known mechanism (not shown) different from those in the first to fifth embodiments interlocking with the pulling-up operation of the safety locking lever 52 (FIG. 1) is provided. One end of a link (not shown) is attached to the pin 368. The mechanism is configured such that the link pushes up the wedge member 354 (second member 358) as the safety lever 52 is pulled up.

  The first member 356 and the second member 358 are connected by the connection means 370 similar to the connection means 194 (FIG. 7) of the third embodiment, so the description of the configuration will be omitted. Reference numeral 372 denotes a head having a hemispherical surface of a hemispherical member with a shaft (corresponding to the hemispherical member 196 with a shaft), and a pair of brazed pins (denoted by 374 and 376 are vertically arranged) The reference numeral 378 is one of a pair of horizontally arranged brazing pins (corresponding to the brazing pins 204).

  In the emergency stop device 330 configured as described above, in an emergency, when the wedge member 354 is pushed up, the wedge member 354 is guided to the guide surface 350A via the roller 352 and skews toward the guide rail 26; Eventually, the clamping surface 360A abuts on the clamping surface 26A and presses the clamping surface 26A. The block body 336 slides to the right toward the paper surface by the reaction force that the clamping surface 360A that presses the clamping surface 26A receives from the clamping surface 26A, and the clamping surface 344A of the brake pad 344 is the clamping surface Abuts on 26B.

  The cage 22 (FIG. 1) continues to descend even after the clamping surfaces 344A and 360A abut the clamping surfaces 26B and 26A, so that the clamping surface 360A of the wedge member 354 is clamped. The frictional force generated with the surface 26A acts upward. Then, according to the “wedge principle (wedge boosting effect)”, the wedge member 354 presses the block body 336 to the right with greater force. As a result, the disc spring 348 is pressed toward the guide rail 26 via the rising portion 336 B of the block body 336 and the spacer 346 to be elastically deformed. By the restoring force of the disc spring 348, the wedge member 354 and the block member 341 are pressed against the clamped surfaces 26A and 26B. As a result, a large frictional force is generated between the clamping surface 360A and the clamping surface 344A and the clamping surfaces 26A and 26B to brake the car.

  In the safety device 330 according to the sixth embodiment, the frictional force sufficient to quickly compress the disc spring 348 according to the principle of the wedge after both the clamping surfaces 360A, 344A have come into contact with the clamping surfaces 26A, 26B. Similarly to the first to fifth embodiments, it is important to bring the entire surface of the tightening surface 360A into contact with the surface 26A in order to cause the clamping surface 360A and the surface 26A to be clamped. is there.

  Also in the safety device 330, the clamping surface 360A of the wedge member 354 is in the horizontal direction centered on the virtual vertical axis passing through the center point of the hemispherical head 372 of the shafted hemispherical member (not shown). Since it is configured to be swingable (slidable) in an arbitrary direction extending in the vertical direction centering on the virtual horizontal axis passing through the central point, Embodiment 3 (FIG. 6, FIG. 7), implementation The same effect as in the fourth embodiment (FIG. 8) and the fifth embodiment (FIG. 9) can be obtained.

  The backup plate 342 is divided into a first member and a second member so that the largest possible braking force can be obtained from the block member 341 even if the guide rail 26 is twisted. And the second member may be connected by the connecting means 94 (FIG. 3B) in the first embodiment and the connecting means 148 (FIG. 4) in the second embodiment. In addition, the first inclination adjustment by the shim is not necessary, or the high-precision adjustment of the parallelism between the tightening surface 344A and the tightening surface 26B in the vertical direction is unnecessary. The member and the second member are connected by the connection means 194 (FIG. 7) in the third embodiment, the connection means 250 (FIG. 8) in the fourth embodiment, or the connection means 316 (FIG. 9A) in the fifth embodiment. It does not matter as a structure.

As mentioned above, although the safety device for elevators concerning the present invention was explained based on the embodiment, of course, the present invention is not limited to the above-mentioned form, for example, it may be performed as follows.
(1) Although the damping pad of the wedge member is formed of the engineering ceramic in the above embodiment, the invention is not limited to this, and the damping pad may be formed of a sintered alloy or another metal material.
In the first embodiment (FIGS. 2 and 3), the third embodiment (FIGS. 6 and 7), and the sixth embodiment (FIG. 10), the first member of the wedge member is made into two members of the braking pad and the backup plate. Although the structure is divided, the first member may be formed of one member. In the second embodiment (FIGS. 4 and 5), the fourth embodiment (FIG. 8), and the fifth embodiment (FIG. 9), the wedge member is divided into two members of the braking pad and the backup block. The members may be formed of one member.

(2) In the first to fifth embodiments, the wedge member is pulled up in an emergency, but may be pushed up as in the sixth embodiment. Conversely, in the sixth embodiment, the wedge member may be lifted up. The configuration may be such that the wedge member can be pulled up.

(3) Furthermore, in each embodiment, part of the configuration may be replaced with that of the other embodiments. Hereinafter, each embodiment will be described.
(A) Embodiment 1 (FIG. 2, FIG. 3)
Although the connection means 94 including the column member 100 is used in the first embodiment, the connection means 148 (FIG. 4, FIG. 5) including the cylinder member 150 in the second embodiment may be used instead. . Alternatively, the connection means 316 (FIG. 9) in the fifth embodiment may be used.

(B) Embodiment 2 (FIG. 4, FIG. 5)
Although the connection means 148 including the cylindrical body member 150 is used in the second embodiment, the connection means 94 (FIG. 3) including the column member 100 in the first embodiment may be used instead. Alternatively, the connection means 316 (FIG. 9) in the fifth embodiment may be used.

(C) Embodiment 3 (FIG. 6, FIG. 7)
In the third embodiment, the connection means 194 including the stemmed hemispherical member 196 is used, but instead, the connection means 250 (FIG. 8) including the sphere 252 in the fourth embodiment may be used. Alternatively, the connection means 316 (FIG. 9) in the fifth embodiment may be used.

(D) Fourth Embodiment (FIG. 8)
Although the connecting means 250 including the spherical body 252 is used in the fourth embodiment, the connecting means 194 (FIG. 7) including the pivoted hemispherical member 196 in the third embodiment may be used instead. Alternatively, the connection means 316 (FIG. 9) in the fifth embodiment may be used.

(E) Fifth Embodiment (FIG. 9)
In the fifth embodiment, the connection means 316 including the ball 318 and the upper and lower connection members 320 and 322 made of soft rubber is used, but instead, the connection means 94 (FIG. 3) of the first embodiment, the second embodiment The connection means 148 (FIG. 4, FIG. 5), the connection means 194 of the third embodiment (FIG. 7), or the connection means 250 of the fourth embodiment (FIG. 8) may be used.
In the fifth embodiment, the wedge receiving members 296 and 298 are divided into the first member 312 and the second member 314. However, the present invention is not limited to this. The wedge members 304 and 306 (backup block 310) are not limited to the first. It may be divided into a member and a second member, and the first member and the second member may be connected by any one of the connecting means described above.

(F) Embodiment 6 (FIG. 10)
In the sixth embodiment, as in the third embodiment, the connection means 370 including the stemmed hemispherical member (the whole is not shown) is used, but instead, the connection means 94 (FIG. 3) of the first embodiment, the embodiment The second connection means 148 (FIG. 4, FIG. 5), the connection means 250 of the fourth embodiment (FIG. 8), or the connection means 316 of the fifth embodiment (FIG. 9) may be used.
In the sixth embodiment, the wedge member 354 is divided into the first member 356 and the second member 358. However, the present invention is not limited to this. The wedge receiving member 350 is divided into the first member and the second member. It does not matter as a structure. In this case, the first member including a guide surface for fixing the second member to the main surface 336A of the block 336 (FIG. 10A) and causing the wedge member to skew toward the guide rail 26 is the first member. The two members are connected by any of the above connecting means.

  In addition to the examples shown in the above (a) to (f), the emergency stop device may be configured by appropriately replacing the structural members between the embodiments.

(4) In the embodiment described above, the elastic member for constructing the emergency type snap-in device, that is, the member for applying the pressing force for finally stopping the car or the counterweight to the pair of brakes U-shaped spring 80 (embodiments 1 to 4), compression coil spring 294 (embodiment 5) or disc spring 348 (embodiment 6) is used, but the elastic member is not limited to these types, and others A type of elastic member may be used.

  The point is that the present invention is attached to the elevator body of the elevator, sandwiching two parallel clamping surfaces of the guide rail vertically guiding the elevator body, and leaving a clearance from the clamping surface In the emergency, with the pair of brakes disposed, the two raised surfaces are tightened by the restoring force of the elastic member elastically deformed by the force generated by exerting a wedge boosting effect, and the lowering body is lowered. A safety locking device for braking, wherein at least one of the pair of brakes goes downward on a clamping surface opposite to the corresponding clamping surface and on the opposite side of the clamping surface. The wedge member includes an inclined surface which is inclined to move away from the surface to be tightened, and a wedge receiving member is provided facing the inclined surface and having a guide surface parallel to the inclined surface. When the wedge member is moved upward at times The inclined surface is guided to the guide surface, and the wedge member is inclined toward the guide rail, and the clamp surface is contacted with the clamp surface after the clamp surface contacts the clamp surface. By moving the wedge member further upward by the upward friction force received, the present invention can be applied to the safety gear that exerts the wedge boosting effect.

  The safety device for an elevator according to the present invention can be suitably used, for example, as an emergency braking device in a high-speed large-capacity elevator.

40, 42, 130, 180, 240, 280, 330 Emergency stop device 76, 78, 136, 138, 242, 244, 296, 298, 350 Wedge receiving member 86, 88, 132, 134, 182, 184, 304, 306, 354 Wedge member 94, 148, 194, 250, 316, 370 Connecting means 341 Block member 76D, 78D, 144A, 246A, 312A, 350A Guide surface 92A, 142A, 188A, 308A, 358B Inclined surface 96A, 140A, 190A , 308A, 360A Tightening surface

Claims (9)

A pair of brakes disposed between the two parallel clamping surfaces of a guide rail which is attached to the elevator body of the elevator and guides the elevator body in the vertical direction, with a gap from the clamping surface And, in an emergency, an emergency stop device that clamps the two clamping surfaces and brakes the descending elevator body,
At least one of the pair of dampers is a clamping surface opposite to the corresponding clamping surface, and is farther away from the clamping surface as it goes downward on the opposite side of the clamping surface. A wedge member including an inclined surface inclined to the
A wedge receiving member having a guide surface facing the inclined surface and parallel to the inclined surface is provided,
The inclined surface of the wedge member, which is moved upward at the time of emergency, is guided by the guiding surface, the wedge member is inclined toward the guide rail, and the clamping surface contacts the clamping surface Safety device to
The wedge receiving member has a first member and a second member, the first member includes the guide surface, and the first member swings at least in the horizontal direction with respect to the second member. Provided
An elevator characterized in that the clamping surface is configured to be horizontally swingable at least about a virtual vertical axis before and after the clamping surface contacts the clamping surface. Safety gear.   The elevator according to claim 1, wherein the first member and the second member are connected by connection means that allows the horizontal swing of the first member relative to the second member. Safety gear. The connection means is
A semi-cylindrical recess formed in one of the first member and the second member and having an axis in the vertical direction;
A columnar projection provided on the other side and having a semi-cylindrical surface fitted to the semi-cylindrical recess, and fitted into the semi-cylindrical recess;
Including
3. The first member according to claim 2, wherein the first member is swingable in the horizontal direction with respect to the second member due to relative sliding between the semi-cylindrical concave portion and the columnar convex portion. Safety device for an elevator as described. The connection means is
A first semi-cylindrical recess formed in the first member and having a vertical axis;
A second semi-cylindrical recess formed in the second member and having an axis in the vertical direction and facing the first semi-cylindrical recess;
A cylindrical body fitted in the first and second semi-cylindrical recesses;
Including
The first member can swing in the horizontal direction with respect to the second member by relative sliding of the first semicylindrical recess and the second semicylindrical recess with respect to the cylindrical body. The safety gear for elevator according to claim 2, characterized in that: The connection means is
A spherical recess formed in one of the first member and the second member and recessed in the horizontal direction;
A spherical convex portion provided on the other side and having a spherical surface fitted to the spherical concave portion, and fitted into the spherical concave portion;
Including
By relative sliding between the spherical recess and the spherical protrusion, the first member can be further oscillated in any direction from the horizontal direction to the vertical direction with respect to the second member. The safety device for an elevator according to claim 2, characterized in that: The connection means is
A first spherical recess formed in the first member and recessed in the horizontal direction;
A second spherical recess formed in the second member, recessed in the horizontal direction, and facing the first spherical recess;
Spheres inserted into the first and second spherical recesses,
Including
The relative sliding of the first spherical recess and the second spherical recess with respect to the sphere causes the first member to further swing in any direction extending from the horizontal direction to the vertical direction with respect to the second member. The safety device for an elevator according to claim 2, characterized in that it is free. A pair of brakes disposed between the two parallel clamping surfaces of a guide rail which is attached to the elevator body of the elevator and guides the elevator body in the vertical direction, with a gap from the clamping surface And, in an emergency, an emergency stop device that clamps the two clamping surfaces and brakes the descending elevator body,
At least one of the pair of dampers is a clamping surface opposite to the corresponding clamping surface, and is farther away from the clamping surface as it goes downward on the opposite side of the clamping surface. A wedge member including an inclined surface inclined to the
A wedge receiving member having a guide surface facing the inclined surface and parallel to the inclined surface is provided,
The inclined surface of the wedge member, which is moved upward at the time of emergency, is guided by the guiding surface, the wedge member is inclined toward the guide rail, and the clamping surface contacts the clamping surface Safety device to
The wedge member has a first member including the tightening surface and a second member including the inclined surface, and the first member is provided so as to be able to swing at least in the horizontal direction with respect to the second member. Being
The clamping surface is configured to be horizontally swingable at least about a virtual vertical axis, before and after the clamping surface contacts the clamping surface.
The first member and the second member are connected by connection means that allows the horizontal swing of the first member relative to the second member,
The connection means is
A semi-cylindrical recess formed in one of the first member and the second member and having an axis in the vertical direction;
A columnar projection provided on the other side and having a semi-cylindrical surface fitted to the semi-cylindrical recess, and fitted into the semi-cylindrical recess;
Including
The safety gear for an elevator, wherein the first member is made swingable in the horizontal direction with respect to the second member by relative sliding between the semi-cylindrical concave portion and the columnar convex portion. apparatus. A pair of brakes disposed between the two parallel clamping surfaces of a guide rail which is attached to the elevator body of the elevator and guides the elevator body in the vertical direction, with a gap from the clamping surface And, in an emergency, an emergency stop device that clamps the two clamping surfaces and brakes the descending elevator body,
At least one of the pair of dampers is a clamping surface opposite to the corresponding clamping surface, and is farther away from the clamping surface as it goes downward on the opposite side of the clamping surface. A wedge member including an inclined surface inclined to the
A wedge receiving member having a guide surface facing the inclined surface and parallel to the inclined surface is provided,
The inclined surface of the wedge member, which is moved upward at the time of emergency, is guided by the guiding surface, the wedge member is inclined toward the guide rail, and the clamping surface contacts the clamping surface Safety device to
The wedge member has a first member including the tightening surface and a second member including the inclined surface, and the first member is provided so as to be able to swing at least in the horizontal direction with respect to the second member. Being
The clamping surface is configured to be horizontally swingable at least about a virtual vertical axis, before and after the clamping surface contacts the clamping surface.
The first member and the second member are connected by connection means that allows the horizontal swing of the first member relative to the second member,
The connection means is
A first semi-cylindrical recess formed in the first member and having a vertical axis;
A second semi-cylindrical recess formed in the second member and having an axis in the vertical direction and facing the first semi-cylindrical recess;
A cylindrical body fitted in the first and second semi-cylindrical recesses;
Including
The first member can swing in the horizontal direction with respect to the second member by relative sliding of the first semicylindrical recess and the second semicylindrical recess with respect to the cylindrical body. Emergency stop device for elevators characterized by A pair of brakes disposed between the two parallel clamping surfaces of a guide rail which is attached to the elevator body of the elevator and guides the elevator body in the vertical direction, with a gap from the clamping surface And, in an emergency, an emergency stop device that clamps the two clamping surfaces and brakes the descending elevator body,
At least one of the pair of dampers is a clamping surface opposite to the corresponding clamping surface, and is farther away from the clamping surface as it goes downward on the opposite side of the clamping surface. A wedge member including an inclined surface inclined to the
A wedge receiving member having a guide surface facing the inclined surface and parallel to the inclined surface is provided,
The inclined surface of the wedge member, which is moved upward at the time of emergency, is guided by the guiding surface, the wedge member is inclined toward the guide rail, and the clamping surface contacts the clamping surface Safety device to
The wedge member has a first member including the tightening surface and a second member including the inclined surface, and the first member is provided so as to be able to swing at least in the horizontal direction with respect to the second member. Being
The clamping surface is configured to be horizontally swingable at least about a virtual vertical axis, before and after the clamping surface contacts the clamping surface.
The first member and the second member are connected by connection means that allows the horizontal swing of the first member relative to the second member,
The connection means is
A first spherical recess formed in the first member and recessed in the horizontal direction;
A second spherical recess formed in the second member, recessed in the horizontal direction, and facing the first spherical recess;
Spheres inserted into the first and second spherical recesses,
Including
The relative sliding of the first spherical recess and the second spherical recess with respect to the sphere causes the first member to further swing in any direction extending from the horizontal direction to the vertical direction with respect to the second member. An emergency stop device for an elevator characterized by being free.

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