JP2005067813A - Lifting device and lifting method for winch of elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winch of an elevator as improvement of the conventional arrangement in which a lifting machine is installed right over a winch which is installed on the top of an uppermost guide rail, involving such a problem wherein it is not possible to secure the stroke enough to lift the winch to its installing position. <P>SOLUTION: A base bracket 9 is installed on the side face 4 of a pit in such a way as positioned over the winch installing position. A wire rope 19 with one end attached to the winch 8 is guided by a pulley device 13 installed on the bracket 9, and the other end of the wire rope 19 is led to the position below the winch installing position. The winch 8 is lifted to the installing position by drawing the other end of the wire rope 19 downward by a chain block 22 in the position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lifting jig used for installing an elevator hoist in a hoistway and a lifting method using the lifting jig.

  The hoisting machine installed in the hoistway can be lifted when the hoisting machine is mounted on the back of the uppermost guide rail, even if the hoisting machine is installed directly above the hoisting machine installation position. Since a stroke for lifting can be secured, it was easy.

  A conventional lifting method of the hoisting machine in such a case will be described with reference to FIG. First, the chain block 104 is suspended and supported by a hook 103 installed on the ceiling 102 of the hoistway 101, and the hoisting machine 105 is taken into the hoistway 101 using the chain block 104.

  Next, the guide rail 106 is removed, and the chain block 108 is suspended and supported by a suspension base 107 installed in advance near a hoisting machine installation position on the ceiling 102 of the hoistway 101, and this chain block 108 is used. Then pull the hoisting machine 105 to the installation position.

  Then, the guide rail 106 is attached to the original position, and the hoisting machine 105 is attached to the back side of the guide rail 106.

  When the hoisting machine is not attached to the back side of the uppermost guide rail in this way, but attached to the upper end of the uppermost guide rail via a machine bed, the clearance between the upper surface of the hoisting machine and the hoistway ceiling Since the height of the hoisting machine is only about 300 mm, if a lifting machine is attached directly above the hoisting machine installation position, a stroke sufficient to lift the hoisting machine to the installation position cannot be secured.

  The problem to be solved is that when a hoisting machine is installed at the upper end of the guide rail, if a hoisting machine is installed directly above the hoisting machine installation position, a stroke sufficient to lift the hoisting machine to the installation position is secured. It is a point that cannot be done.

  The lifting jig of the present invention is a base bracket installed on the side of the hoistway so as to be positioned above the hoisting machine setting position set at the upper end of the guide rail, a rope with one end attached to the hoisting machine, A guide means provided on the base bracket for guiding the rope in the longitudinal direction and guiding the other end side of the rope downward; the hoisting machine is lifted by pulling the other end side of the rope downward; It was made to do.

  In the present invention, the base bracket is installed on the side of the hoistway so as to be positioned above the hoisting machine installation position, the rope is guided by the guide means, and the other end side of the rope is lower than the hoisting machine installation position. Just lift the hoisting machine to the installation position by guiding it to the position and pulling the other end of the rope downward by the hoisting machine at that position to raise the hoisting machine to the hoisting machine installation position. Since the stroke can be secured, the hoisting machine can be easily lifted.

  The purpose of lifting at a position below the hoisting machine installation position was realized with a simple and inexpensive configuration.

  FIG. 1 is a perspective view of the lifting jig and the upper part of the hoistway according to the first embodiment of the present invention, FIG. 2 is an enlarged view of the main part of FIG. 1, and FIG. In FIG. 1, 1 is a main rail as a guide rail for guiding a car, and 2 is a C / W rail as a guide rail for guiding a counterweight, which are vertically installed in the hoistway. The main guide rail 1 is fixed to the hoistway side surface 4 via a plurality of rail brackets 3. A machine bed 7 is attached to the upper ends of the main rail 1 and the C / W rail 2 via bases 5 and 6. The upper surface of the machine bed 7 is the installation position of the hoisting machine 8.

  A base bracket 9 is installed above the hoistway side surface 4 and above the installation position of the hoisting machine 8. The base bracket 9 includes a mounting plate 10 that is fixed to the hoistway side surface 4, and a pair of left and right arms 11 that have one end fixed to the upper end of the mounting plate 10 symmetrically and protrude in a direction perpendicular to the hoistway side surface 4. , And a support plate 12 spanned between the upper surfaces. Each arm 11 is configured by combining a pair of rail-shaped members having an L-shaped cross section.

  On the support plate 12, a pulley device 13 as a guide means is attached. As shown in FIG. 2, the pulley apparatus 13 includes a pulley 14 and a pair of left and right bearing plates 15 that rotatably support the pulley 14. A long hole 16 (see FIG. 3) extending in a direction orthogonal to the hoistway side surface 9 is formed in the bottom wall of the bearing plate 15. Each bearing plate 15 is fixed to the support plate 12 via a bolt 17, and can be moved in the longitudinal direction of the long hole 16 (direction contacting and separating from the hoistway side surface 4) by loosening the bolt 17. By doing in this way, it becomes possible to respond | correspond to the some site where hoistway dimensions differ with one model.

  Each bearing plate 15 is provided with rope detachment preventing means 18. This rope detachment prevention means 18 is for preventing a wire rope 19 (described later) wound around the outer peripheral portion of the pulley 14 from coming off from the outer peripheral portion of the pulley 14 due to an impact, as shown in FIG. It comprises a straight bar 18a having a screw formed on it and nuts 18b screwed to both ends thereof. The rod body 18a is attached to each bearing plate 15 by passing both ends through through holes 15a formed in the bearing plate 15 and screwing nuts 18b to both ends.

  Next, a procedure for lifting the hoisting machine 8 will be described. First, the base bracket 9 is placed on the hoistway side surface 4 at a position where the lateral center is opposed to the suspension fulcrum of the hoisting machine 8 and within a range in which the wire rope 19 can be wound around the pulley 14. Install in position.

  At this time, the base bracket 9 is attached to the side surface 4 of the hoistway by an anchor bolt in the case of an RC structure (a building made of concrete) or by welding in the case of a steel structure. (Not shown).

  Bases 5 and 6 are attached to the upper ends of main rail 1 and C / W rail 2, and machine bed 7 is attached thereon. Then, the rope detachment preventing means 18 of the pulley device 13 is removed, and the wire rope 19 is wound around the outer peripheral portion of the pulley 14. Then, the rope detachment preventing means 18 is attached so that the wire rope 19 does not come off.

  A lifting plate 20 is attached to the upper surface of the hoisting machine 8 outside the hoistway, and the hoisting machine 8 is taken into the hoistway using a lifting machine or the like. One end of the wire rope 19 is attached to the retaining portion 21, and the other end side of the wire rope 19 is guided downward through a through hole (not shown) formed in the support plate 12.

  Then, a chain block 22 as a lifting machine is attached to the other end of the wire rope 19 below the machine bed 7. Further, a wire rope 23 is hung on the rail bracket 3 of the machine bed 7 two or three steps below, and the wire rope 23 is hung on the movable hook 24 of the chain block 22.

  The chain block is equipped with hooks on the top and bottom of the case that houses the gear, and is equipped with a chain for lifting and operation, and the upper hook is hung from the suspension source and the other hook is hung on the suspended load for operation. The suspended load is lifted by winding up the chain.

  When the chain block 22 is wound up, the wire rope 19 is pulled downward and the hoisting machine 8 is raised. The hoisting machine 8 is raised to the position of the machine bed 7 and attached to the upper surface of the machine bed 7.

  In this way, the chain block is not installed above the hoisting machine installation position, and the other end of the wire rope 19 is pulled downward by the chain block 22 at a position below the hoisting machine installation position. Since the hoisting machine 8 is lifted, a stroke sufficient to lift the hoisting machine 8 to the installation position can be secured, so that the hoisting machine 8 can be easily lifted.

  The operation of setting the lifting jig according to the present invention is performed by installing the base bracket 9 on the side surface 4 of the hoistway, guiding the wire rope 19 by the pulley device 13, and setting the other end of the wire rope 19 at the hoisting machine installation position. Since it is only guided below, it can be performed easily without taking time.

  Moreover, since the lifting jig of the present invention has a simple structure, it can be manufactured at low cost.

  In the present embodiment, after lifting the hoisting machine 8, the base bracket 9 is used as a mounting base for equipment other than the hoisting machine 8 attached to the upper part of the hoistway (for example, toslander, governor, rope hitch, etc.). It can also be used, and the number of parts can be reduced.

  Next, a second embodiment of the present invention will be described. FIG. 4 is an enlarged view of a main part of the lifting jig of the second embodiment. In the present embodiment, the same reference numerals are used for the same or similar parts as those in the first embodiment, and duplicate descriptions are omitted.

  In this embodiment, the plate 25 is attached to the hoistway side surface 4 by anchor bolts or welding, and the base bracket 9 is attached to the plate 25 with bolts 26.

  By doing in this way, since it becomes possible to attach the base bracket 9 to a desired position, it is possible to deal with a plurality of types of elevators with one type of lifting jig. When there are a plurality of types of lifting jigs, there is a possibility that the lifting jigs attached to the hoistway may be mistaken. However, as in the present embodiment, there is only one type of lifting jigs, so such fears are eliminated.

It is a perspective view of the lifting jig and hoistway upper part of 1st Example of this invention. It is a principal part enlarged view of FIG. It is a principal part enlarged plan view of FIG. It is a principal part enlarged view of the lifting jig of 2nd Example of this invention. It is explanatory drawing of the lifting method of the conventional winding machine.

Explanation of symbols

1 Main rail (guide rail)
2 C / W rail (guide rail)
4 Side of hoistway 8 Hoisting machine 9 Base bracket 13 Pulley device (guide means)
18 Rope detachment prevention means 19 Wire rope 22 Chain block (lifter)

Claims (5)

A base bracket installed on the hoistway side so as to be positioned above the hoisting machine setting position set at the upper end of the guide rail, a rope having one end attached to the hoisting machine, and the base bracket provided on the base bracket And a guide means for guiding the rope in the longitudinal direction and guiding the other end side of the rope downward, and pulling the other end side of the rope downward to raise the hoisting machine. Lifting jig for elevator hoisting machine. 2. The lifting jig for an elevator hoist according to claim 1, wherein the base bracket also serves as a mounting base for equipment other than the hoist installed at the upper part of the hoistway. The lifting jig for an elevator hoisting machine according to claim 1 or 2, wherein the guide means is attached to the base bracket so as to be movable toward and away from the side surface of the hoistway. The lifting jig for an elevator hoisting machine according to any one of claims 1 to 3, further comprising rope detachment prevention means for preventing the rope from coming off from the guide means. The elevator hoisting method using the lifting jig according to any one of claims 1 to 4, wherein the base bracket is positioned above the hoisting machine installation position. Is installed on the side of the hoistway, the rope is guided by the guide means, and the other end of the rope is guided to a position below the hoisting machine installation position, and the other end of the rope is lifted at the position. And lifting the hoisting machine to the hoisting machine installation position by pulling downward by means of a lifting method for an elevator hoisting machine.

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