JP2015074544A - Installation device and method for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rope winding jig capable of efficiently installing a resin-covered rope.SOLUTION: A rope winding jig of this invention is disposed between a winch and a main rope, and provided with: at least one salient, whose shape corresponds to a sheave groove of the winch; and at least one U-shaped part corresponding to a rope diameter to slide the main rope at the opposite side of the salient. At least a part contacting the sheave groove of the salient is made of a component having a friction coefficient higher than that of the U-shaped part.

Description

  Embodiments of the present invention relate to a rope winding jig capable of efficiently laying a resin-coated rope.

  In recent years, for elevators for low-rise buildings, a machine room-less (no machine room) structure that has a high degree of freedom in architectural design and can save space is becoming common. In other words, an elevator that drives the car in a slat-type (traction type) by winding the main rope around the drive sheave directly connected to the motor, fixing one end of the main rope to the upper part of the hoistway, and attaching the other end to the car The structure is increasing.

  As a main rope applied to a traction type elevator, a rope structure in which the surface of a pit tension member such as a wire rope is covered with a resin material having a friction resistance and a high friction coefficient such as polyurethane has been proposed in recent years.

  This resin-coated rope is composed of a single strand coated on the surface, a strand formed by twisting the strand and individually coated with a coating 14 made of polyethylene, polyurethane, etc. The coated strand 1 is twisted, and the circumference is composed of a core rope covered with a coating material such as polyethylene and polyurethane, and a coating resin made of polyurethane provided on the outer periphery of the rope.

  When the resin-coated rope as described above is used, the friction coefficient is higher than that of a normal wire rope, so that it is possible to obtain the traction performance necessary for an elevator traction type elevator.

JP 2011-157158 A

  However, when a resin-coated rope as described above is used, the workability deteriorates when the elevator is installed, particularly when the rope is wound around a drive sheave that is directly connected to the hoisting machine because of the high friction coefficient. .

  In order to install the main rope efficiently when installing the elevator, in general, after assembling the main structures in the hoistway such as a car and counterweight, the main rope is directly connected to the car sheave and hoisting machine. Wrap around a sheave attached to the counterweight.

  As for winding of the main rope, the main rope is drawn so as to be wound around the sheave, and when the drawing to the object is finished, both ends of the main rope are fixed to the upper part of the hoistway.

  After fixing the main rope, apply a lifting load such as a car or counterweight. While pulling out the main rope that is wound around the drum that sends out the main rope, it winds around the drive sheave and each sheave directly connected to the hoisting machine.

  When routing, each sheave has a structure that can rotate freely, so the main rope can be easily routed, but the drive sheave is integrated with the motor equipped with a brake, so it does not rotate, The main rope is slid on the groove surface of the drive sheave.

  When using a wire rope as the main rope as in the past, the friction force between the drive sheave groove and the main rope in the no-load state is small, and there is no problem with the routing work. Even in this case, the coating resin adheres to the surface of the drive sheave groove, and a great deal of force is required to route the main rope.

  In addition, work safety is reduced due to the frictional force at the time of routing, and the possibility that the resin surface is damaged increases.

  Therefore, according to an embodiment of the present invention, a resin-coated rope provided with a high-friction resin such as polyurethane on the surface has been made in view of the above-described problems that occur during installation. The purpose is to provide a rope wrapping jig that can be laid.

  In order to achieve the above object, a rope winding jig according to an embodiment of the present invention is disposed between a hoisting machine and a main rope, and has a convex portion that is shaped to fit a sheave groove of the hoisting machine and The opposite side of the convex part is a rope winding jig provided with at least a part of a U-shaped part adapted to a rope diameter for sliding the main rope, and at least the sheave of the convex part. The portion that contacts the groove is formed of a member having a higher coefficient of friction than the U-shaped portion.

It is a schematic diagram showing an outline of an elevator concerning an embodiment of the present invention. It is sectional drawing of the main rope which concerns on embodiment of this invention. It is a schematic diagram which shows the routing operation | work of the main rope which concerns on embodiment of this invention. It is a winding machine front view at the time of the resin-coated rope installation which concerns on embodiment of this invention. It is a perspective view which shows the single-piece | unit structure of the sliding member which concerns on embodiment of this invention. It is a schematic diagram which shows the structure of the rope holding mechanism which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment)
FIG. 1 is a schematic diagram showing an overview of an elevator according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a resin-coated rope according to an embodiment of the present invention. FIG. 2 is a schematic view showing the main rope routing work according to the embodiment of the present invention. FIG. 3 is a front view of the hoisting machine when the resin-coated rope according to the embodiment of the present invention is installed. FIG. 4 is a perspective view showing a single structure of the sliding member according to the embodiment of the present invention.

  First, the outline | summary of the elevator which concerns on this embodiment is demonstrated using FIG. As shown in FIG. 1, the hoistway 1 has a machine room 2 at the top thereof. A main rope 6 for suspending a car 4 and a counterweight 5 is wound around a driving sheave 3 directly connected to a hoisting machine (motor) installed in the machine room 2. The main ropes 6 are each fixed to a machine bed or the like in the machine room 2 via a car sheave 7. The other side of the main rope 6 is fixed to a machine bed or the like in the machine room via a counterweight sheave 8. The driving force of the driving sheave 3 is supplied by a motor 9 that is directly connected.

  The main rope 6 according to this embodiment is a resin-coated rope. In this case, the surface of a tensile member such as a wire rope as the main rope 6 is coated with a resin material having wear resistance and a high friction coefficient such as polyurethane.

  Specifically, as shown in the cross-sectional view of the main rope 6 in FIG. 2, the strand 10 is formed by twisting steel strands 9 that are mine tension members inside the resin-coated rope. The strands 10 form a plurality of bundles, and the strands 10 are covered with an intermediate covering material 11 made of polyurethane, polyethylene, or the like. The outermost periphery of the intermediate covering material 11 and the strand 10 group is resin-coated with a resin material 21 made of polyurethane, polyethylene, polyamide, or the like.

  By using the main rope 6 as a resin-covered rope, the frictional force between the drive sheave 3 and the main rope 6 can be increased, and downsizing of equipment such as a hoisting machine can be achieved. Furthermore, since it is not necessary to replenish the lubricating grease required for the main rope 6 as in the prior art, the labor of the maintenance work place is reduced and the environmental load can be reduced.

  Next, the operation of routing the main rope 6 during elevator installation will be described with reference to FIG.

  The routing of the main rope 6 refers to the installation of the elevator. For example, after assembling main structures in the hoistway 1 such as the car 4 and the counterweight 5, the main rope 6 is installed on the top of the hoistway 1 through each sheave. Both ends of the main rope 6 are attached and fixed, and a load such as a car 4 and a counterweight 5 is applied. In FIG. 3, reference numeral 12 denotes a drum for feeding out the main rope 6, and the main rope 6 is wound around the drum 12.

  As shown in FIG. 3A, the main rope 6 wound around the drum 12 is first pulled out and passed under the car sheave 7. Next, as shown in FIG. 3 (b), the main rope 6 that passes under the sheave 7 on the car is wound around the drive sheave 3. Then, the main rope 6 wound around the drive sheave 3 is passed under the counterweight sheave 8 as shown in FIG. 3C, and the end of the main rope 6 is connected to the machine room 2 or the like as shown in FIG. It is attached and fixed to the top of the hoistway 1. Similarly, the other end of the main rope 6 is taken out from the drum 12 and attached and fixed to the top of the hoistway 1 such as the machine room 2.

  At this time, since the car sheave 7 and the counterweight sheave 8 are free to rotate, the main rope 6 can be easily routed, but the drive sheave 3 is integrally formed with a motor 9 having a brake. Therefore, the main rope 6 slides on the sheave groove of the drive sheave 3 and is advanced.

  In the present embodiment, the sliding member 13 shown in FIG. 4 is mounted on the sheave groove of the drive sheave 3 so that even the resin-coated rope can be smoothly routed.

  Hereinafter, the configuration of the sliding member 13 according to the present embodiment will be described with reference to FIGS. 4 and 5. FIG. 4 is a front view of the drive sheave when the main rope is routed in the present embodiment. As shown in FIG. 4, the drive sheave 3 is installed on the machine bed 14 by being attached to the motor 9. The machine bed 14 is composed of an upper step portion 14a and a lower step portion 14b, and a plurality of elastic members 15 as vibration isolating devices are arranged between the machine bed upper step portion 14a and the machine bed lower step portion 14b. In addition to the elastic material 15, a jack-up bolt 16 is provided between the machine bed upper step portion 14 a and the lower step portion 14 b. The jack-up bolt 16 is attached through the machine bed upper step portion 14a so that the bolt head 16a is on the upper side, and the lower end portion of the jack-up bolt 16 is attached to the machine bed lower step portion 14b. A nut 20 is attached to the jack-up bolt 16 with the machine bed upper step portion 14a interposed therebetween.

  Further, as shown in FIG. 4, the machine bed lower step portion 14 b is provided with a rope holding mechanism 17 for holding the main rope 6.

  As shown in FIG. 6, the structure of the rope holding mechanism 17 includes brackets 17a and 17b having U-shaped portions for sandwiching the rope, and the brackets 17a and 17b are opened and closed by the sandwiching bolts 18 to sandwich or release the rope. It has a configuration that can be.

  A plurality of sliding members 13 are arranged side by side between the drive sheave 3 and the main rope 6. The sliding member 13 is disposed in a range corresponding to the contact angle between the drive sheave 3 and the main rope 6. Further, a support member 19 is provided to support both ends of the sliding member 13 so that the plurality of sliding members 13 do not slide down from the sheave groove of the drive sheave 3. The support material 19 is attached to the machine bed 14, but it does not matter whether it is fixed or not. For example, the machine bed 14 may be provided with a dent that matches the shape of the bottom of the support member 19 and supported by the dent, or may be fixed using a bracket, a bolt, or the like.

  In addition, in this embodiment, the sliding member 13 is made into the several piece in order to make the sliding member 13 removal operation | work after the routing operation | work of the main rope 6 easy. Of course, it is not limited to a plurality of pieces, and may be configured as a single sliding member 13 as an integral configuration.

  Next, the configuration of the sliding member 13 according to the present embodiment will be described with reference to FIG. FIG. 5A shows one piece of the sliding member 13. The sliding member 13 has convex portions 13a that match the sheave grooves of the drive sheave 3 so as to match the number of sheave grooves, and the opposite surface side of the sliding member 13 has a rope diameter for sliding the main rope 6. There are U-shaped portions 13b suitable for the number of ropes.

  In order to ensure slidability with the resin-coated rope, the sliding member 13 is preferably made of nylon resin, polyacetal resin, or the like at least with respect to the portion in contact with the resin-coated rope. The groove side on which the resin-coated rope slides, that is, the U-shaped portion 13b side is made of a material having a low friction coefficient such as fluororesin, while the side that matches the sheave groove of the winding drive sheave 3, that is, the convex portion 13a side is polyurethane. It shall be made of a material having a high friction coefficient such as

  As described above, the protruding member 13a and the U-shaped portion 13b are made of different materials to form the sliding member 13, but the forming conditions are not particularly limited. That is, it may be formed integrally (corresponding to FIG. 5A), or the sliding member 13 may be formed by combining a plurality of members. As an example in which a plurality of members are combined, as shown in FIG. 5B, a material having a high friction coefficient is attached to the convex portion 13a of the main body 13c of the sliding member 13, or a friction coefficient is applied to the U-shaped portion 13b. It is also possible to adopt a configuration in which each friction coefficient is adjusted by attaching a low-quality material.

  Alternatively, the sliding member 13 itself may be formed of a material having a high coefficient of friction such as polyurethane, and a material having a low coefficient of friction such as a fluororesin may be bonded to the U-shaped portion 13b side. Naturally, on the contrary, the sliding member 13 itself can be formed of a material having a low coefficient of friction such as a fluororesin, and a material having a high coefficient of friction such as polyurethane can be bonded to the convex portion 13a side. It is.

  Next, the operation of drawing the main rope 6 when the elevator is installed will be described using the above configuration.

  As described above, when the elevator is installed, the main rope 6 wound around the drum 12 is wound around each sheave, the drive sheave 3 and the like at the top floor hall or the like. At that time, the sliding member 13 is attached to the sheave groove of the drive sheave 3. Thus, when the main rope 6 is wound around the drive sheave 3 and the main rope 6 is routed around the counterweight sheave 8 or the like, the operation is carried out by sliding on the sliding member 13. Then, after the main rope 6 has been routed, it is necessary to remove the sliding member 13 from the drive sheave 3.

  As a method for removing the sliding member 13, a jack-up bolt 16 or a bracket 17 provided on the machine bed 14 is used. After the main rope 6 has been routed, the operator lifts the drive sheave 3 by operating the nut 20 provided on the jack-up bolt 16 before applying tension to the main rope 6 by the car 4 and the counterweight 5, The main rope 6 is sandwiched by the holding mechanism 17 to fix the rope position.

  After that, when the rope holding mechanism 17 holds the rope position, the nut 20 is operated again to lower the drive sheave 3 so that the main rope 6 is lifted from the drive sheave 3. And the support member 19 can be easily removed.

  In the present embodiment, the case where the machine room 2 is provided will be described, but the present invention is naturally applicable to an elevator without a machine room.

  In the present embodiment, the case where a resin-coated rope is used as the main rope 6 has been described. However, the shape of the main rope 6 is not limited to a round cross-section, and for example, a belt type instead of the main rope. The same applies to those used. In other words, if the present invention is applied to a resin-coated belt, the same effect can be obtained by adopting the shape of the sliding member according to the belt shape. That is, the U-shaped portion 13b of the sliding member 13 in this embodiment may be shaped according to the belt shape, and the shape of the convex portion 13a may be formed in accordance with the shape of the sheave groove of the drive sheave 3.

  Of course, the present invention can be similarly applied to other shapes.

DESCRIPTION OF SYMBOLS 1 ... Hoistway 2 ... Machine room 3 ... Drive sheave 4 ... Car 5 ... Counter weight 6 ... Main rope 7 ... Car sheave 8 ... Counter weight sheave 9 ... Motor 10 ... Strand 11 ... Intermediate covering material 12 ... Drum 13 ... Sliding member 14 ... machine bed 15 ... elastic material 16 ... jack up bolt 17 ... rope holding mechanism 18 ... pinching bolt 19 ... support material 20 ... nut 21 ... resin material 22 ... element wire

Therefore, according to an embodiment of the present invention, a resin-coated rope provided with a high-friction resin such as polyurethane on the surface has been made in view of the above-mentioned problems that occur during installation. An object of the present invention is to provide an elevator installation apparatus and method that can be installed .

In order to achieve the above object, an elevator installation apparatus according to an embodiment of the present invention is an elevator installation apparatus using a resin-coated rope in which the surface of a main rope is coated with a resin having a high coefficient of friction. And a lower frame, a machine bed in which the hoisting machine is disposed, a hoisting mechanism of the hoisting machine provided in the machine bed, a grip of the main rope provided in the machine bed, and a position of the main rope A rope holding mechanism for holding the hoisting machine, and one or a plurality of sliding members arranged in a contact range between the hoisting machine and the main rope on the sheave groove of the hoisting machine. To do.

Claims (7)

A convex part that is arranged between the hoisting machine and the main rope and that fits the sheave groove of the hoisting machine, and the opposite side of the convex part is a shape that fits the rope diameter for sliding the main rope A rope winding jig provided with at least a part of each U-shaped portion,
The rope winding jig characterized in that at least a portion of the convex portion that contacts the sheave groove is formed of a member having a higher coefficient of friction than the U-shaped portion.   The rope winding jig according to claim 1, wherein the convex portion is formed from a polyurethane resin.   The rope winding jig according to claim 1, wherein the U-shaped portion includes at least one of nylon resin, polyacetal resin, or fluororesin. An elevator installation device using a resin-coated rope in which the surface of the main rope is coated with a resin having a high coefficient of friction,
A machine bed having an upper frame and a lower frame, on which a hoisting machine is disposed;
A hoisting mechanism of a hoisting machine provided in the machine bed;
A rope holding mechanism for holding the main rope provided in the machine bed and holding the position of the main rope;
One or more sliding members arranged on a sheave groove of the hoisting machine and within a contact range of the hoisting machine and the main rope;
An elevator installation apparatus comprising: The hoisting mechanism of the hoisting machine is
The machine bed has one or more jack-up bolts and nuts attached to one or more bolt holes provided in the upper and lower stages of the machine bed, and by rotation of the jack-up bolts or the nuts, The elevator installation apparatus according to claim 4, wherein the position of the hoisting machine is moved in the vertical direction by moving the upper stage or the lower stage of the machine bed in the vertical direction. The rope holding mechanism is
The machine bed has one or a plurality of brackets that are provided at the upper or lower part of the machine bed and that can be opened and closed around the axis of the main rope. The main rope is sandwiched or opened by opening and closing the bracket. The elevator installation apparatus according to claim 4, wherein the rope position is held at an arbitrary position. An elevator installation method using a resin-coated rope in which the surface of the main rope is coated with a resin having a high coefficient of friction,
A sliding member formed with a member having a low coefficient of friction with the main rope is disposed in a sheave groove of a hoisting machine, and the main rope is slid on the sliding member to install the main rope when the elevator is installed. The steps of routing,
Lifting the hoisting machine using a jack-up bolt provided in a machine bed in which the hoisting machine is disposed after the routing operation is completed;
Holding the position of the main rope by a rope holding mechanism provided in the machine bed after lifting the hoisting machine;
Lowering the position of the hoisting machine using the jackup bolt while maintaining the position of the main rope;
Lowering the hoisting machine, and when a space is created between the hoisting machine and the main rope, removing the sliding member;
After the sliding member is removed, opening the rope holding mechanism and bringing the main rope into contact with the sheave groove of the hoisting machine;
An elevator installation method comprising:

Images