JP2020045210A - Guide rail holding device for elevator - Google Patents

Abstract

To provide a rail clip capable of holding an elevator guide rail by an appropriate holding force.SOLUTION: This guide rail holding device for the elevator, which holds a guide rail 300 vertically extended in a hoistway, includes: a plurality of building side brackets 350 fixed in the hoistway; a rail bracket 330 fixed to each building side bracket 350; rail clips 340 attached to the rail bracket 330; and holding members 347, 348 attached to the rail clips 340 to hold the guide rail 300.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an elevator guide rail holding device.

  The elevator guide rail guides a car or a counterweight, which is connected to the counterweight by a main rope in a hanging manner, in a vertical direction in the hoistway.

  The guide rail is attached to each of a plurality of brackets fixed in a row in the hoistway wall at intervals in the hoistway wall by rail clips provided for each bracket.

  On the other hand, in a recent high-rise building, since the weight of the building itself, the furniture in the building, and the weight of a person or the like is large, the whole building is gradually compressed in the vertical direction (building compression).

  With the building compression, the bracket fixed in the hoistway wall of the elevator moves up and down together with the hoistway wall. Further, the building is compressed more as it approaches the lower end of the building.

  Therefore, the interval between the brackets in the vertical direction is gradually reduced. When the guide rail and the bracket are firmly fixed by the rail clip, the guide rail receives a compressive load between the brackets and between the bracket and the bottom of the hoistway. As a result, the guide rail may be bent or buckled.

  In order to solve such a problem, in an elevator installed in a high-rise building, a guide rail is held so as to slide with a sliding clip.

  That is, when the space between the brackets is reduced, the rail clip is configured to slide with respect to the guide rail in accordance with the reduction, so that the guide rail does not bend or buckle.

  In Patent Document 1, a first rail bracket is attached to a hoistway wall, a second rail bracket is attached to the first rail bracket, and a guide rail is attached to the second rail bracket with a clip. .

JP 2014-5124 A

  However, when the building is a high-rise building, the guide rails are held so that they can be slid by the sliding clips.If the compressive force of the building does not increase beyond the holding force of the sliding clips, the guide rails will slide. Since the clip cannot slide, the holding force accumulates as axial force and acts on the guide rail.

  Therefore, even when the guide rail slides with the sliding clip, buckling or deformation may occur due to accumulation of the axial force corresponding to the holding force of the guide rail.

  In this case, depending on the specifications of the elevator, the sliding clip may not be applicable even to a 300 m building, and there is a limit to the height of the building to which the sliding clip can be applied.

  In order to solve this problem, a sliding clip having as low a holding force as possible has conventionally been used.

  However, the thickness of the guide rail varies in production, while the sliding clip requires a holding force for holding the guide rail.

  Therefore, conventionally, in order to secure a necessary holding force for holding the guide rail of the sliding clip, the holding force of the sliding clip is configured to be larger than necessary.

  On the other hand, since the amount of deformation of the leaf spring depends on the thickness of the guide rail, there is a problem in that the holding force of the sliding clip varies greatly.

  A main object of the present invention is to provide a rail clip that can hold a guide rail of an elevator with an appropriate holding force.

An elevator guide rail holding device according to a first aspect of the present invention is an elevator guide rail holding device that holds a guide rail extending vertically in a hoistway,
A plurality of building side brackets fixed in the hoistway;
A rail bracket fixed to the building-side bracket,
A rail clip attached to the rail bracket,
A guide rail holding device for an elevator, comprising: a holding member attached to the rail clip and holding the guide rail.

  An example of the holding member is a screw. The screw may be any screw, but a set screw is preferred.

  By adjusting the position of the holding member, the guide rail can be held with an appropriate holding force even if the thickness of the guide rail varies.

  Preferably, the holding member is mounted so as to be movable in the direction toward the rail bracket. Thereby, since the position of the holding member can be finely adjusted, the holding force by which the holding member holds the guide rail can be finely adjusted.

  An elevator guide rail holding device according to a second aspect of the present invention is the elevator guide rail holding device according to the first aspect, wherein the elevator guide includes a fixing member for fixing the holding member to the rail clip. It is a rail holding device.

  When the holding member is fixed by the fixing member, the holding member is fixed to the rail clip and becomes difficult to move. Therefore, the holding member whose position has been adjusted is fixed at that position.

  An elevator guide rail holding device according to a third aspect of the present invention is the elevator guide rail holding device according to the first aspect or the second aspect, wherein the holding member is a screw. Device.

  The screw may be any screw, but a set screw is preferred. When the holding member is a screw, by rotating the screw, the tip of the screw can be easily positioned, and the position for holding the guide rail can be easily adjusted. Further, by adjusting the screw tightening torque, an appropriate holding force for holding the guide rail is secured. The screw is a concept including a bolt.

  The elevator guide rail holding device according to a fourth aspect of the present invention is the elevator guide rail holding device according to the third aspect, wherein the fixing member is a nut fitted to the screw. It is.

  When the holding member is a bolt and the fixing member is a nut, the bolt as the positioned holding member is fixed at that position, so that the bolt of the holding member is difficult to move, and a constant holding force is maintained on the guide rail. be able to.

  An elevator guide rail holding device according to a fifth aspect of the present invention is an elevator including the elevator guide rail holding device according to the first to fourth aspects.

The perspective view of the elevator concerning this embodiment. The side view schematic of the elevator which concerns on this embodiment. FIG. 2 is a partial perspective view of the guide rail and the rail holding device according to the embodiment. FIG. 2 is a partial perspective view of the guide rail and the rail holding device according to the first embodiment. The top view of the guide rail and rail holding device which concern on the embodiment. The side view of the guide rail and rail holding device which concern on the embodiment. The top view of the guide rail and rail holding device which concern on 2nd Embodiment.

  Hereinafter, an embodiment of an elevator guide rail holding device according to the present invention and an elevator including the same will be described with reference to the drawings.

(Elevator 100)
As shown in FIGS. 1 and 2, in the elevator 100, a hoist 200 is installed below the hoistway.

  One end of the main rope 220 wound around the drive sheave 210 of the hoisting machine 200 is fixed in the hoistway via the first car sheave 232 and the second car sheave 233 attached to the car 230. I have.

  The other end of the main rope 220 is fixed in the hoistway via a counterweight sheave 241 attached to the counterweight 240.

  When the drive sheave 210 is rotationally driven by a motor (not shown) of the hoisting machine 200, the main rope 220 travels accordingly. Then, along with this, the car 230 to which the first car sheave 232 and the second car sheave 233 are attached is guided by the car guide rail 300a and moves up and down in the hoistway.

  Similarly, as the main rope 220 travels, the counterweight 240 to which the counterweight sheave 241 is attached is guided by the counterweight guide rail 300b and moves up and down in the hoistway.

  The running direction of the main rope 220 is changed by the first sheave 211 and the second sheave 212.

  The elevator 100 is provided with a governor 400 that mechanically detects that the elevating speed of the car 230 has exceeded a predetermined speed. An endless governor rope 600 is wound around a governor sheave 410 of the governor 400 and a tension sheave 500 located below the governor sheave 410.

  The governor rope 600 is stretched by the tension sheave 500 in a state of being tensioned in parallel with the main rope 220. A part of the governor rope 600 is fixed to an emergency stop lever 250 for operating an emergency stop device 231 provided on the car 230 side.

  Therefore, the governor rope 600 runs at the same speed as the car 230 in synchronization with the elevation of the car 230. At this time, when the governor 400 detects the rotation speed of the governor sheave 410 that is rotated at the same speed as the traveling speed of the governor rope 600, it is detected that the speed of the car 230 that is moving up and down is excessive.

  When the elevating speed of the car 230 reaches the first speed exceeding the rated speed (predetermined speed), the motor (not shown) constituting the hoisting machine 200 of the main rope 220 is braked.

  If the car 230 does not stop even when the motor (not shown) is braked, the movable grip (not shown) by the trip lever (not shown) of the governor sheave 410 is reached at a predetermined second speed exceeding the first speed. The support is released, and the traveling of the governor rope 600 is stopped by the movable grip.

  Then, the emergency stop lever 250 fixed to the governor rope 600 is pulled up by the governor rope 600 and relatively pulled up. As a result, the safety device 231 operates.

  When the car 230 does not stop even when the safety device 231 operates, the car 230 collides with the first oil buffer 700a, which is the oil buffer 700 disposed below. The first oil buffer 700a absorbs the impact of the car 230 and stops the car 230.

  A second oil buffer 700b, which is the oil buffer 700, is also arranged below the counterweight 240. When the counterweight 240 falls, the second oil buffer 700b absorbs the impact of the drop of the counterweight 240 and stops the counterweight 240.

(Guide rail 300)
In the present embodiment, the car guide rail 300a and the counterweight guide rail 300b have the same configuration, and will be hereinafter referred to as "guide rail 300".

  As shown in FIG. 3, the guide rail 300 is configured by connecting a plurality of guide rail members 310. The guide rail member 310a and the guide rail member 310b are connected by a connecting member (not shown). The same applies to the other guide rail members 310.

  A convex portion is formed at the upper end of the guide rail member 310, and a concave portion is formed at the lower end of the guide rail member 310. Then, the protrusion of the guide rail member 310b is fitted into the recess of the guide rail member 310a. In this state, the connecting member (not shown) connects the guide rail member 310a and the guide rail member 310b.

  The connecting member (not shown) and the guide rail member 310 are fixed by bolts (not shown). Other guide rail members 310 and connecting members (not shown) are similarly fixed by bolts (not shown).

  The guide rail member 310 has a substantially T-shape in plan view, and includes a rail portion 311 and a held portion 312 held by a rail holding device 320 described later. A guide roller unit (not shown) attached to the car 230 is fitted to the rail portion 311.

  The guide rail 300 is mounted in a hoistway by a plurality of rail brackets 330 and rail clips 340. Specifically, the held portion 312 of the guide rail member 310 is held by the guide rail holding device 320, so that the guide rail 300 is mounted in the hoistway.

(Guide rail holding device 320)
<First embodiment>
The guide rail holding device 320 includes a building side bracket 350 fixed in the hoistway,
A rail bracket 330 fixed to the building-side bracket 350;
A rail clip 340 attached to the rail bracket 330,
And a holding member attached to the rail clip 340.

  As shown in FIGS. 3 to 6, the rail bracket 330 is fixed to the building-side bracket 350. Specifically, the rail bracket 330 is fixed to the building-side bracket 350 by a first bolt 333 and a second bolt 334.

In the present embodiment, the rail bracket 330 is a substantially L-shaped member viewed from the yz plane, and includes a rail clip mounting portion 331 extending in the z-axis direction.
a rail bracket attachment portion 332 that extends in the y-axis direction and is attached to the building-side bracket 350.

  The rail clip mounting portion 331 has a first rail clip through hole 331a that is a through hole, and a second rail clip through hole 331b that is a through hole arranged on the x-axis negative direction side of the first rail clip through hole 331a. And are provided.

  The rail bracket mounting portion 332 has a first rail bracket through hole (not shown), which is a rail bracket through hole, and a rail bracket through hole arranged on the x-axis negative direction side of the first rail bracket through hole (not shown). And a second rail bracket through hole (not shown) which is a hole.

  The rail clip 340 includes a first rail clip 341 and a second rail clip 342 disposed on the x-axis negative direction side of the first rail clip 341.

  Note that the second rail clip 342 has the same configuration as the first rail clip 341 and may be omitted or simplified in some cases.

The first rail clip 341 includes a first through hole 341a that is a through hole for passing the first bolt 343 that is a bolt,
A second through hole 341b, which is a through hole for passing the third screw 347 as a holding member, is provided.

  The first through hole 341a is disposed on the x-axis positive direction side of the second through hole 341b.

  The second through hole 341b is arranged on the y-axis negative direction side of the held portion 312 of the guide rail 300 (guide rail member 310).

  The first bolt 343 is passed through the first through hole 341 a of the first rail clip 341 and the first rail clip through hole 331 a of the rail clip attachment part 331, and is screwed and fixed by the first nut 345.

Similarly to the first rail clip 341, the second rail clip 342 includes a third through hole 342a that is a through hole for passing a second bolt 344 that is a bolt.
A fourth through hole 342b, which is a through hole for passing the fourth screw 348 as a holding member, is provided.

  The third through hole 342a is arranged on the x-axis negative direction side of the fourth through hole 342b.

  The fourth through hole 342b is disposed on the y-axis negative direction side of the held portion 312 of the guide rail 300 (guide rail member 310).

  The second bolt 344 is passed through the third through hole 342 a of the second rail clip 342 and the second rail clip through hole 331 b of the rail clip attachment part 331, and is screwed and fixed by the second nut 346.

  The first nut 345 is screwed to the first bolt 343 to fix the first rail clip 341 to the rail clip attachment portion 331. However, the first nut 345 may be integrated with the rail clip attachment portion 331. Good.

  Similarly, the second nut 346 is screwed to the second bolt 344 to fix the second rail clip 342 to the rail clip mounting portion 331, but is integrated with the rail clip mounting portion 331. There may be.

  The third screw 347 is attached to the first rail clip 341 and presses the guide rail 300 against the rail bracket 330 to hold the guide rail 300.

  That is, the third screw 347 as the holding member is movable in the y-axis direction, and holds the guide rail 300 by moving the holding member.

  Specifically, the second through hole 341b is formed with a tapped hole, and by rotating the third screw 347, the position of the end of the third screw 347 on the y-axis positive direction side can be adjusted.

  When the position of the third screw 347 is determined, the position of the third screw 347 can be fixed by screwing the third nut 347a in the y-axis negative direction. In this embodiment, a set screw is used as the third screw 347.

  The fourth screw 348 is attached to the second rail clip 342 similarly to the third screw 347, and presses the guide rail 300 against the rail bracket 330 to hold the guide rail 300.

  That is, the fourth screw 348 as a holding member is movable in the y-axis direction, and holds the guide rail 300 by moving the holding member.

  Specifically, the fourth through hole 342b is formed with a tapped hole, and by rotating the fourth screw 348, the position of the end of the fourth screw 348 on the y-axis positive direction side can be adjusted.

  When the position of the fourth screw 348 is determined, the position of the fourth screw 348 can be fixed by screwing the fourth nut 348a in the negative y-axis direction. In the present embodiment, a set screw is used as the fourth screw 348.

  By using the set screw for the third screw 347 and the fourth screw 348, the protruding portion in the y-axis negative direction side is reduced by the amount of the screw head, and the possibility of interference with other devices such as the guide roller is reduced. be able to. Note that the third screw 347 and the fourth screw 348 may be hexagon socket set screws.

  At the time of installation, the third screw 347 and the fourth screw 348 are tightened at a preset value using a torque wrench, so that the holding force held by the first rail clip 341 and the second rail clip 342 is aimed at. Can be adjusted.

  By holding the guide rail member 330 with the third screw 347 and the fourth screw 348, the thickness (width in the y-axis direction) of the held portion 332 of the guide rail member 330 varies in manufacturing. Also, by adjusting the positions of the ends of the third screw 347 and the fourth screw 348 on the positive side in the y-axis direction, the guide rail member 310 (the held portion 312) can be pressed with an optimal force.

  The building-side bracket 350 is a substantially L-shaped member as viewed in the yz plane in the present embodiment, extends in the y-axis direction, and has the rail bracket 330 attached thereto.

The building-side bracket 350 includes a bracket-side mounting portion 351 to which the rail bracket 330 is mounted,
And a building-side mounting portion 352 that is mounted on a wall surface in the hoistway.

The bracket-side mounting portion 351 includes a first building-side bracket through hole (not shown),
A second building-side bracket through-hole (not shown) disposed on the x-axis negative direction side of the first building-side bracket through-hole (not shown).

The building-side mounting portion 352 includes a third building-side bracket through-hole 352a that is a through-hole,
A fourth building-side bracket through-hole 352b, which is a through-hole disposed on the x-axis negative direction side of the third building-side bracket through-hole 352a.

  Anchor bolts are inserted into the third building-side bracket through-hole 352a and the fourth building-side bracket through-hole 352b of the building-side mounting portion 352 of the building-side bracket 350, and the building-side bracket 350 is fixed in the hoistway. .

<Second embodiment>
As shown in FIG. 7, in the second embodiment, a screw having a large screw head portion is used for the holding member, and a rail clip 370 is used. The description of the same contents as those of the first embodiment will be omitted or simplified.

  In the second embodiment, the third screw 347 and the fourth screw 348 of the holding member are such that the head portion, which is the end on the y-axis negative direction side, has a diameter in the xz plane as compared with the screw portion on the y-axis positive direction side. It is getting bigger. In the present embodiment, bolts are used for the third screw 347 and the fourth screw 348.

In the second embodiment, the rail clip 370 includes a first rail clip 341 disposed on the x-axis positive direction side,
A second rail clip 342 disposed on the x-axis negative direction side of the first rail clip 341;
A rail clip fixing portion 371 to which the first rail clip 341 and the second rail clip 342 are fixed.

  In the first embodiment, the held portion 312 of the guide rail 300 is located between the y-axis positive direction end of the third screw 347 and the fourth screw 348 and the rail clip fixing portion 371 of the rail clip mounting portion 331. , The guide rail 300 is held, but in the second embodiment, a guide is provided between the end of the third screw 347 and the fourth screw 348 on the y-axis positive direction side and the rail clip 370. The guide rail 300 is held by sandwiching the held portion 312 of the rail 300.

  Even with such a holding member, the same effects as in the first embodiment can be obtained.

  The present invention can be implemented in a form in which various improvements, modifications, or variations are added without departing from the spirit thereof.

DESCRIPTION OF SYMBOLS 100 ... elevator 230 ... car 240 ... counterweight 300 ... guide rail 300a ... 1st guide rail 300b ... 2nd guide rail 310 ... guide rail member 311 ... rail part 312 ... held part 320 ... guide rail holding device 330 ... rail Bracket 331: Rail clip mounting part 332: Rail bracket mounting part 332a: First rail bracket through hole (rail bracket through hole)
340 rail clip 341 first rail clip 342 second rail clip 347 third screw (holding member)
347a: Third nut (fixing member)
348: 4th screw (holding member)
348a: 4th nut (fixing member)
350: building-side bracket 351: bracket-side mounting portion 351a: first building-side bracket through-hole (building-side bracket through-hole)
352: Building side mounting part

Claims (5)

An elevator guide rail holding device for holding a guide rail extending vertically in a hoistway,
A plurality of building side brackets fixed in the hoistway;
A rail bracket fixed to the building-side bracket,
A rail clip attached to the rail bracket,
A guide rail holding device for an elevator, comprising: a holding member attached to the rail clip and holding the guide rail. The elevator guide rail holding device according to claim 1, further comprising a fixing member that fixes the holding member to the rail clip. 3. The elevator guide rail holding device according to claim 1, wherein the holding member is a screw. The guide rail holding device for an elevator according to claim 3, wherein the fixing member is a nut fitted to the screw. An elevator comprising the elevator guide rail holding device according to claim 1.

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