WO2021250776A1

WO2021250776A1 - Elevator guide rail fixing device and elevator device

Info

Publication number: WO2021250776A1
Application number: PCT/JP2020/022687
Authority: WO
Inventors: 泰裕金山; 奏深澤
Original assignee: 株式会社日立製作所
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-12-16
Also published as: JP7434548B2; CN115884934A; JPWO2021250776A1

Abstract

The purpose of the present invention is to provide an elevator guide rail fixing device which does not require a long installation time, not to mention that there is no risk of injury to an operator, even if a wall bracket and a rail bracket are fixed using a drill screw. An elevator guide rail fixing device wherein a guide rail is fixed to a wall-side rail bracket fixed to a wall surface in the hoistway of an elevator with a rail-side rail bracket interposed therebetween and the wall-side rail bracket and the rail-side rail bracket are fastened with a drill screw, the elevator guide rail fixing device being characterized in that a cover with a nut is installed at the tip of the drill screw so as to cover the tip of the drill screw.

Description

Elevator guide rail fixing device and elevator device

The present invention relates to an elevator guide rail fixing device and an elevator device, and in particular, a guide rail for guiding the ascent and descent of an elevator car and a counterweight, etc., is fixed at a predetermined position in a hoistway via a bracket. The present invention relates to a suitable elevator guide rail fixing device and an elevator device.

When fixing the guide rail that guides the ascent and descent of the elevator car and the counterweight to the predetermined position in the hoistway with the guide rail fixing device via the bracket, the installation work of the guide rail is simplified and the work time is reduced. Patent Document 1 describes a fixing device for a guide rail for an elevator, which can make the finish uniform without being influenced by the skill level of the operator while shortening the length, and is resistant to a load such as an earthquake.

In Patent Document 1, the wall bracket having the first elongated hole is fixed to the wall surface of the hoistway, and the rail bracket having the second elongated hole is fixed to the guide rail. Adjust the relative position of the rail bracket with respect to the above, and tighten the bolt inserted at the intersection of the first elongated hole and the second elongated hole with a nut to temporarily set the relative position of the wall bracket and the rail bracket. It is described that the rail bracket is finally fixed to the wall bracket by fixing and fastening a pair of drill screws to a portion outside the bolt in the width direction of the guide rail.

Japanese Unexamined Patent Publication No. 2019-18928

However, in the technique described in Patent Document 1 described above, a drill screw that is used for both drilling and shear resistance bolts is used for two wall brackets and a rail bracket for the purpose of improving workability. Since the drill screw has a function to easily drill a hole in one or two of the above brackets made of steel plate, the tip of the drill screw is sharp, and when performing other work or maintenance after construction. When performing work, the tip of the drill screw is sharp and the worker is on a business trip, which may injure the worker.

In order to prevent this, the tip of the drill screw should be cut, but since the tip of the drill screw is also machined on-site using a tool such as a sander, it is not welded without welding. Is not possible, and cutting with a jigsaw is conceivable, but cutting with a jigsaw has the problem that it takes time to work.

The present invention has been made in view of the above points, and the object thereof is that even if the wall bracket and the rail bracket are fixed by using a drill screw, there is no risk of injury to the operator. Of course, it is an object of the present invention to provide an elevator guide rail fixing device and an elevator device that do not require a long construction time.

In the guide rail fixing device for an elevator of the present invention, in order to achieve the above object, the guide rail is fixed to the wall-side rail bracket fixed to the wall surface in the hoistway of the elevator via the rail-side rail bracket. A guide rail fixing device for an elevator in which the wall-side rail bracket and the rail-side rail bracket are fastened with a drill screw, and a nut is attached to the tip of the drill screw so as to cover the tip of the drill screw. It is characterized by having a cover installed.

Further, in order to achieve the above object, the elevator device of the present invention has a car and a counterweight for raising and lowering the hoistway, a hoist on which the main rope is wound, and an elevator upright in the hoistway. A guide rail for an elevator that guides the raising and lowering of the car and the counterweight, and the guide rail for the elevator that is fixed to the wall-side rail bracket fixed to the wall surface in the hoistway via the rail-side rail bracket. The elevator device is provided with the above-mentioned fixing device, and the elevator guide rail fixing device is characterized by being a fixing device for an elevator guide rail having the above configuration.

According to the present invention, even if the wall bracket and the rail bracket are fixed by using a drill screw, there is no risk of injury to the operator and the construction time is not lengthened.

It is a figure which shows the schematic structure of the elevator device which adopts Example 1 of the fixing device of the guide rail for an elevator of this invention. It is a figure which made the building of FIG. 1 a horizontal cross section at a position including a car entrance, and looked at the car from above. It is a top view which shows the state which is fixed to the equilibrium weight side guide rail by using Example 1 of the fixing device of the guide rail for an elevator of this invention. FIG. 5 is a partial perspective view showing a state in which the rail side rail bracket and the wall side rail bracket to which the balanced weight side guide rail is fixed are fixed by drill screws in the first embodiment of the elevator guide rail fixing device of the present invention. .. It is a partial perspective view which shows the state which the state of FIG. 4 is seen from the balance side guide rail side. It is a partial perspective view which shows the state which looked at the state of FIG. 4 from the lower left of a rail bracket. It is a partial perspective view which shows the state which looked at the state of FIG. 4 from the lower right of the rail bracket. It is a perspective view which shows the drill screw adopted in Example 1 of the fixing device of the guide rail for an elevator of this invention. FIG. 8A is a perspective view seen from the lower left. It is a perspective view which shows the cover with a nut of the drill screw shown in FIG. 8A. 9 (a) is a perspective view seen from the lower left. It is a perspective view which shows the state before attaching the cover with the nut of the drill screw adopted in Example 1 of the fixing device of the guide rail for an elevator of this invention. 10 (a) is a perspective view seen from the upper left. It is sectional drawing of the drill screw shown in FIG. 8A. It is a perspective view which shows the drill screw adopted in Example 2 of the fixing device of the guide rail for an elevator of this invention. It is a perspective view which shows the cover with the nut of the drill screw adopted in Example 2 shown in FIG. 13 (a) is a perspective view seen from the lower left. It is sectional drawing of the drill screw adopted in Example 2 shown in FIG.

Hereinafter, the fixing device for the guide rail for an elevator of the present invention will be described based on the illustrated embodiment. In each figure, the same reference numerals are used for the same components.

FIG. 1 shows a schematic configuration of an elevator device 100 in which the first embodiment of the elevator guide rail fixing device of the present invention is adopted.

As shown in FIG. 1, the elevator device 100 moves in a hoistway 1 for communicating each floor of the building 2, a plurality of landings 2A provided on each floor of the building 2, and each landing in the hoistway 1. Each landing 2A is connected to the car 4 by the car entrance 4A in preparation for the car 4 that stops at 2A.

The car 4 is connected to one end of the main rope (not shown) and suspended in the hoistway 1, and the balance weight 5 balanced with the weight of the car 4 is connected to the other end of the main rope. ing. Further, above the hoistway 1, a hoisting machine 3 for hoisting the main rope and a control panel (not shown) for controlling the operation of the hoisting machine 3 are installed.

When the hoisting machine 3 winds up or rewinds the main rope, the car

side guide rails

6 and 7 fixed to the hoistway 1 and the balance weight

side guide rails

8 and 9 are along the balance

side guide rails

8 and 9, and the car 4 and the balance weight 5 are slidable. Move to.

The equilibrium weight side guide rail 9 is fixed to the wall surface 1A of the hoistway 1 via a first rail bracket 10 by a fastening means 16a composed of bolts and nuts, and the equilibrium weight side guide rail 8 and the car side guide rail 7 are The car side guide rail 6 is fixed to the wall surface 1A of the hoistway 1 via the second rail bracket 11 by the fastening means 16b (see FIG. 2), and the car side guide rail 6 is connected to the wall surface 1A of the hoistway 1 via the third rail bracket 12. It is fixed to the fastening means 16c (see FIG. 2).

FIG. 2 shows the details of the car

side guide rails

6 and 7 and the equilibrium weight

side guide rails

8 and 9 fixed to the wall surface 1A of the hoistway 1. FIG. 2 is a horizontal cross-sectional view of the building 2 at a position including the car entrance / exit 4A, and the car 5 is viewed from above.

As shown in FIG. 2, the first rail bracket 10 is composed of a first wall-side rail bracket 10A and a first rail-side rail bracket 10B, and the balanced weight-side guide rail 9 is a first rail-side rail bracket 10B. The first rail-side rail bracket 10B is fixed to the wall surface 1Ad of the hoistway 1 by the fastening means 16a via the first wall-side rail bracket 10A.

Further, the second rail bracket 11 is composed of a second wall side rail bracket 11A and a second rail side rail bracket 11B, and the balanced weight side guide rail 8 and the car side guide rail 7 are combined with the second rail side rail bracket. It is held by 11B, and the second rail-side rail bracket 11B is fixed to the wall surface 1Ab of the hoistway 1 by the fastening means 16b via the second wall-side rail bracket 11A.

Further, the third rail bracket 12 is composed of a third wall-side rail bracket 12A and a third rail-side rail bracket 12B, and the car-side guide rail 6 is held by the third rail-side rail bracket 12B. The rail-side rail bracket 12B of No. 3 is fixed to the wall surface 1Ac of the hoistway 1 by the fastening means 16c via the third wall-side rail bracket 12A.

Further, the balance weight side guide rail 9 has

rail clip bolts

17a and 17b inserted into the first rail side rail bracket 10B as shown in FIG. 3, and is passed through the

rail clip bolts

17a and 17b. The

nuts

18a and 18b are fixed by

rail clips

19a and 19b that are tightened from the directions opposite to the

nuts

18a and 18b.

Anchor bolt fixing holes (not shown) are formed in the first wall-side rail bracket 10A, and anchor bolts 10H1 and 10H2 selectively passed through the anchor bolt fixing holes are used on the first wall side. The rail bracket 10A is fixed to the wall surface 1A of the hoistway 1 (see FIG. 3).

The fixing device for the elevator guide rail of this embodiment adopted in the elevator device 100 configured as described above will be described below.

In this embodiment, the guide rails will be described with respect to the balanced weight side guide rail 9 as a representative of the four guide rails, and the balanced weight side guide rails 8 and the car

side guide rails

6 and 7. Is omitted.

Normally, the equilibrium weight side guide rail 9 is fixed to the wall surface 1A of the hoistway 1 via the first rail bracket 10 by the fastening means 16a as described above, but the first rail bracket 10 constitutes the first rail bracket 10. The wall-side rail bracket 10A and the first rail-side rail bracket 10B of No. 1 are fastened to drill

screws

19A and 19B, which will be described later, with

friction fixing bolts

15A and 15B.

The fixing device for the guide rail for the elevator of this embodiment has the drill screw 19A shown in FIGS. 10 (a) and 10 (b) (since the drill screw 19B has the same structure as the drill screw 19A, the description thereof is omitted). A cover 19A2 with a nut (see FIGS. 9A and 9B) is installed at the tip of the drill screw 19A so as to cover the tip of the drill screw 19A.

That is, as shown in FIGS. 8A and 8B, the drill screw 19A of the present embodiment is composed of the drill screw portion 19A1 and the cover 19A2 with a nut formed in a hollow columnar shape.

As shown in FIGS. 9 (a) and 9 (b), the above-mentioned cover 19A2 with a nut has the nut portion 19A22 and the drill screw 19A of the nut portion 19A22 in the projecting direction (diagonally lower left in FIG. 8 (a)). The cover portion 19A21 attached in the direction) is fixed by welding (reference numeral 18 in FIG. 9B), and the drill thread portion 19A1 is engaged with the threaded portion 19A22a cut on the inner peripheral side of the nut portion 19A22. It is combined (see FIG. 11).

Next, the first wall-side rail bracket 10A and the first rail-side rail bracket 10B in this embodiment will be described.

As shown in FIGS. 4, 5, 6 and 7, the first wall-side rail bracket 10A and the first rail-side rail bracket 10B of this embodiment are formed in an L-shaped cross section, and the cross section is L-shaped. The short side portion 10A'of the first wall-side rail bracket 10A of the shape is fixed to the wall surface 1A in the hoistway 1 by passing a bolt through the holes 10A5, 10A6, 10A7 formed therein, and has a cross section. The balanced weight side guide rail 9 is fixed to the short side portion 10B'of the L-shaped first rail side rail bracket 10B, and the long side portion 10A of the first wall side rail bracket 10A and the first rail side rail. The long side portion 10B of the bracket 10B is fastened to the drill screws 19A and 19B on which the cover 19A2 with nuts is installed by the

friction fixing bolts

15A and 15B.

That is, in this embodiment, when the car 4 normally travels, the first wall-side rail bracket 10A and the first rail-side rail bracket 10B are fastened by the frictional force of the

friction fixing bolts

15A and 15B, resulting in an earthquake. If the

friction fixing bolts

15A and 15B slip in an abnormal situation such as time, the load is received by the drill screws 19A and 19B on which the nut-attached cover 19A2 used in this embodiment is installed.

Further, a pair of through holes are formed in the long side portion 10A "of the first wall side rail bracket 10A and the long side portion 10B" of the first rail side rail bracket 10B of the present embodiment at predetermined intervals (in addition, a pair of through holes are formed at predetermined intervals. FIGS. 4, 5, 6 and 7 do not appear because the drill screws 19A and 19B on which the cover 19A2 with the nut is installed are inserted), and the cover 19A2 with the nut is installed in each through hole. By inserting the drill screws 19A and 19B through the washer, the first wall-side rail bracket 10A and the first rail-side rail bracket 10B are fastened.

Further, in this embodiment, as shown in FIGS. 4, 5, 6 and 7, the long side portion 10A of the first wall side rail bracket 10A and the long side portion of the first rail side rail bracket 10B. Each of the 10B "has a plurality of oval holes between the above-mentioned through holes (the long side portion 10A of the first wall-side rail bracket 10A" has four oval holes 10A1, 10A2, 10A3, 10A4, Two elliptical holes 10B1 and 10B2) are formed in the long side portion 10B "of the first rail side rail bracket 10B", and in this embodiment, the long side portion 10A of the first wall side rail bracket 10A is formed. In the oval holes 10A3 and 10A4 formed in "and the long side portion 10B of the first rail side rail bracket 10B", the

friction fixing bolts

15A and 15B are attached to the

washer

17A and 17B in the oval holes 10B1 and 10B2. The first wall-side rail bracket 10A and the first rail-side rail bracket 10B are fastened to each other, and the

friction fixing bolts

15A and 15B are moved in the oval holes 10B1 and 10B2. The fastening position of the wall-side rail bracket 10A and the first rail-side rail bracket 10B is adjusted.

According to this embodiment, since the cover 19A2 with a nut is installed at the tips of the drill screws 19A and 19B so as to cover the tips of the drill screws 19A and 19B, the drill screws 19A and 19B are used. Even if it is used to fix the first wall bracket 10A and the first rail bracket 10B, there is no risk of injury to the operator and the construction time will not be long.

In particular, since the cover portion 19A21 welded to the nut portion 19A22 is tightened to the screw portion 19A22a of the drill screws 19A and 19B, the cover portion 19A21 can be attached without falling and can protect the operator.

Further, even after the drill screws 19A and 19B are installed from the top to the bottom, the tips of the drill screws 19A and 19B are protected even when the rail clips 19a and 19b are attached or removed and other brackets are installed. Therefore, there is no risk of injury to the operator, and fixing with a nut also prevents the drill screws 19A and 19B from loosening.

12, FIG. 13 (a), FIG. 13 (b), and FIG. 14 show the drill screw 19A adopted in the second embodiment of the elevator guide rail fixing device of the present invention.

Similar to the first embodiment, the drill screw 19A of the present embodiment shown in the figure also has a cover 19A2 with a nut installed at the tip of the drill screw 19A so as to cover the tip of the drill screw 19A. In the drill screw 19A of the embodiment, a hole 19A3 for attaching a bind wire 17 (see FIG. 14) is formed in a part of the cover portion 19A1 with a nut on the opposite side of the cover portion 19A1 from the nut portion 19A22.

With such a configuration of this embodiment, the same effect as that of the first embodiment can be obtained, and of course, the bind wire 17 is tied to the hole 19A3 described above, and the bind wire 17 and the drill screw 19A adjacent to the bind wire 17 are bound to each other. By connecting with the bind wire tied to the hole formed in 19B, it is possible to prevent the drill screws 19A and 19B from being detented.

The present invention is not limited to the above-described embodiment, and includes various modifications.
For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the configurations described. Further, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

1 ... hoistway, 1A, 1Ab, 1Ac, 1Ad ... hoistway wall surface, 2 ... building, 2A ... landing, 3 ... hoisting machine, 4 ... car, 4A ... car entrance, 5 ... balanced weight, 6, 7 ... Car side guide rails, 8, 9 ... Balanced weight side guide rails, 10 ... First rail bracket, 10A'... Short side of the first wall side rail bracket, 10A "... First wall side rail bracket Long side part, 10A ... 1st wall side rail bracket, 10A1, 10A2, 10A3, 10A4 ... Oval hole formed in the long side part of the 1st wall side rail bracket, 10A5, 10A6, 10A7 ... 1st Hole formed in the short side of the wall side rail bracket, 10B ... 1st rail side rail bracket, 10B1, 10B2 ... Oval hole formed in the long side of the first rail side rail bracket, 10B'... 1 Short side of the rail side rail bracket, 10B "... Long side of the first rail side rail bracket, 10H1, 10H2 ... Anchor bolt, 11 ... Second rail bracket, 11A ... Second wall side rail bracket , 11B ... 2nd rail side rail bracket, 12 ... 3rd rail bracket, 12A ... 3rd wall side rail bracket, 12B ... 3rd rail side rail bracket, 15A, 15B ... friction fixing bolt, 16a, 16b , 16c ... Fastening means, 17A, 17B ... Washer, 17 ... Bind wire, 18 ... Welding, 18a, 18b ... Rail clip bolt nut, 19A, 19B ... Drill screw, 19A1 ... Drill screw part, 19A2 ... Cover with nut , 19A3 ... Hole formed in the drill screw, 19A21 ... Cover part, 19A22 ... Nut part, 19A22a ... Threaded part, 19a, 19b ... Rail clip, 100 ... Elevator device.

Claims

A guide rail is fixed to the wall-side rail bracket fixed to the wall surface in the hoistway of the elevator via the rail-side rail bracket, and the wall-side rail bracket and the rail-side rail bracket are fastened with a drill screw. Guide rail fixing device for
A guide rail fixing device for an elevator, characterized in that a cover with a nut is installed at the tip of the drill screw so as to cover the tip of the drill screw.
The elevator guide rail fixing device according to claim 1.
The nut-attached cover is formed by welding a nut portion and a cover portion of the nut portion attached in the protruding direction of the drill screw to a screw portion cut on the inner peripheral side of the nut portion. A guide rail fixing device for elevators, characterized in that a drill screw is engaged.
The elevator guide rail fixing device according to claim 2.
A guide rail fixing device for an elevator, wherein the cover portion of the nut-attached cover is formed in a hollow columnar shape.
The elevator guide rail fixing device according to claim 3.
A guide rail fixing device for an elevator, characterized in that a hole for attaching a bind wire is formed in a part of the cover portion of the cover with a nut on the side opposite to the nut portion.
The elevator guide rail fixing device according to claim 4.
A guide rail for an elevator, wherein the bind wire is tied to the hole, and the bind wire is connected to the bind wire tied to a hole formed in a hole formed in another drill screw adjacent to the drill screw. Fixing device.
The fixing device for an elevator guide rail according to any one of claims 1 to 5.
The wall-side rail bracket and the rail-side rail bracket are formed in an L-shaped cross section, and the short side portion of the wall-side rail bracket having an L-shaped cross section is fixed to the wall surface in the hoistway and has an L-shaped cross section. The guide rail is fixed to the short side portion of the rail-side rail bracket in a shape, and the long side portion of the wall-side rail bracket and the rail-side rail bracket is formed by the drill screw to which the nut-attached cover is installed. A fixing device for guide rails for elevators, which is characterized by being fastened.
The elevator guide rail fixing device according to claim 6.
A pair of through holes are formed in the long sides of the wall-side rail bracket and the rail-side rail bracket at predetermined intervals, and the drill screw having the nut-attached cover installed in each through hole is provided. A guide rail fixing device for an elevator, characterized in that the wall-side rail bracket and the rail-side rail bracket are fastened by passing the rail.
The fixing device for an elevator guide rail according to claim 7.
An oval hole is formed between the through hole formed on each long side of the wall-side rail bracket and the rail-side rail bracket, and the wall-side rail bracket is passed through the oval hole with a friction fixing bolt. And the rail-side rail bracket, and the friction fixing bolt is moved in the oval hole to adjust the fastening position of the wall-side rail bracket and the rail-side rail bracket. Guide rail fixing device.
A car and a balance weight that goes up and down the hoistway, a hoist on which the main rope is wound, a guide rail that is erected in the vertical direction of the hoistway and guides the up and down of the car and the balance weight, and the above. An elevator device provided with a wall-side rail bracket fixed to a wall surface in a hoistway and a guide rail fixing device for an elevator that fixes the guide rail via the rail-side rail bracket.
The elevator device, wherein the elevator guide rail fixing device is the elevator guide rail fixing device according to any one of claims 1 to 8.