JP2011157156A - Elevator device and elevator renewal method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device and an elevator renewal method, inexpensively renewable to a rope type elevator having a hoisting machine in a short period, and capable of reducing work noise, by leaving a hydraulic jack used in a hydraulic elevator and using the hydraulic jack for supporting a guide rail for a counterweight. <P>SOLUTION: This elevator device is provided for renewing the hydraulic elevator for liftably driving a car 1 by the hydraulic jack 6 erected on the side of a lifting area of the car 1 in a hoistway 10, to a well bucket type having the counterweight 3. A rail 4a near the hydraulic jack 6 of the guide rail 4 for the counterweight 3 in the hoistway, is supported and fixed by being connected to a hydraulic jack 6 side member via a bracket 5a. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an elevator apparatus and an elevator renewal method in which an existing hydraulic elevator is renewed into a fishing bottle type having a hoisting machine.

  Hydraulic elevators have been installed in many low-rise buildings in the past because there is a degree of freedom in the layout of the machine room and there is no need to provide a machine room above the building. However, a traction machine including a hoisting machine was installed in the hoistway about a decade ago, and it was replaced by a fishing bottle type (also called rope type) machine room-less elevator equipped with a counterweight. This rope-type elevator has the advantages that it consumes less power than a hydraulic elevator, can be used for buildings with a high ascending / descending stroke, does not require a machine room, and is environmentally friendly because it does not use hydraulic oil.

  Due to these advantages, recently, the construction of renewing an existing hydraulic elevator to a rope elevator without a machine room is increasing (for example, see Patent Document 1).

  Here, the hydraulic elevator is installed in the hoistway so that the car can be raised and lowered by the guide rail, and a hydraulic jack is installed in a space between one side (for example, the back) of the car and the inner wall of the hoistway. Using this hydraulic jack, the car is driven up and down. This hydraulic jack has a plunger that moves up and down by hydraulic pressure, and a rope is wound around a plunge sheave provided at the tip of this plunger, one end of this rope is connected to the rope hitch of the car and the other end Is connected to the lower base of the hydraulic jack. Therefore, when the plunger sheave of the hydraulic jack is raised, the car is lifted and raised by one end of the rope wound around the plunger sheave.

  When such a hydraulic elevator is renewed to a rope type, it is necessary to remove existing products and newly install equipment used for the new system. For example, since a hydraulic jack becomes unnecessary, it can be considered to remove it from the hoistway. However, this hydraulic jack has a length that is about half the height of the hoistway and is heavy, so that it requires a lot of manpower and time to remove and carry it out.

  On the other hand, by adopting a rope type (fishing bottle type), a new counterweight is required, and a guide rail that guides the counterweight so that it can be raised and lowered is required. This guide rail is installed vertically in an empty space in the hoistway, for example, on the side (back surface portion, etc.) of the elevator elevator area. In addition, this guide rail must be supported on a strong structure such as an existing steel frame or wall on the building side by brackets at intervals of 2.5 m in the length direction. Usually, an anchor bolt is driven into the hoistway inner wall, and a structure for firmly attaching the bracket is employed.

  However, because it is a renewal construction, the back side of the wall surface where anchor bolts are driven may be a living space. In such a case, the noise from which the anchor bolt is shot is directly applied to the resident in the living space facing the processed wall surface, which makes the resident feel uncomfortable.

JP 2006-347727 A

  As described above, when the hydraulic elevator is renewed to the fishing bottle type elevator device, much labor and cost are required to dismantle and discard the hydraulic jack that is no longer needed. Further, the space for arranging the guide rail for guiding the counterweight to be newly installed is limited, and when a fixed bracket for supporting the guide rail is provided, there is a possibility that the existing steel frame or wall cannot be processed at a predetermined position. Furthermore, when there is a resident on the surface to be processed, there is a problem that the sound during construction makes the sound unpleasant as noise.

  An object of the present invention is to provide a rope type having a hoisting machine at a low cost for a short period of time by leaving a hydraulic jack used in a hydraulic elevator and using it for supporting a guide rail for a counterweight. It is an object of the present invention to provide an elevator apparatus and an elevator renewal method that can be renewed to an elevator and can reduce construction noise.

  In the elevator apparatus of the present invention, a hydraulic elevator that drives the elevator up and down by a hydraulic jack standing on the side of the elevator elevator area in the elevator hoistway has been renewed into a sliding type having a counterweight. An elevator apparatus, wherein a pair of guide rails for guiding a counterweight in the up-and-down direction at the side of the elevator region of the car in the hoistway, the rails installed near the hydraulic jack are connected via a bracket. The hydraulic jack is connected to a member on the hydraulic jack left in the hoistway.

  In the elevator apparatus according to the present invention, the bracket for supporting the rail is welded to an existing bracket that fixes the hydraulic jack to the inner wall of the hoistway.

  In the elevator apparatus according to the present invention, the bracket for supporting the rail may have a structure in which an intermediate portion is integrally connected by nuts screwed to both ends of U-bolts joined to the outer periphery of the hydraulic jack. Good.

  In the elevator apparatus according to the present invention, at least one of the rail support brackets may be connected to a member on the hydraulic jack side.

  In the elevator renewal method according to the present invention, a hydraulic elevator that lifts and lowers the car by a hydraulic jack installed on the side of the elevator lifting / lowering area in the elevator hoistway is changed to a sway type having a counterweight. A renewal method for an elevator to be renewed, comprising: a pair of guide rails for guiding a counterweight in a lifting direction in a side of a lifting region of the car in the hoistway, rails installed near the hydraulic jack, It is connected and fixed to a member on the hydraulic jack side remaining in the hoistway through a bracket.

  According to the present invention, the hydraulic jack used in the hydraulic elevator remains in the hoistway, and the hydraulic jack is used for supporting the counterweight guide rail. The time required for use is not required, and the construction noise for installing the guide rail can be reduced.

1 is a plan view showing an embodiment of an elevator apparatus according to the present invention. It is a front view which shows the support part of one rail in one Embodiment same as the above. It is a front view which shows the support part of the other rail in one Embodiment same as the above. FIG. 4 is a plan view showing a support structure when a hydraulic jack side member is not used for rail support in the embodiment. It is a top view which shows other embodiment of this invention.

  Hereinafter, an embodiment of an elevator apparatus according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view of an elevator apparatus renewed from a hydraulic elevator into a fishing bottle type. In FIG. 1, a car 1 is installed in an elevator hoistway 10 so as to be lifted and lowered by a pair of guide rails 11 arranged on both sides thereof. A hydraulic jack 6 is erected on the side of the raising / lowering region of the car 1 (upward in the drawing facing the back of the car 1). The hydraulic jack 6 is used to drive the car 1 up and down in a hydraulic elevator. Therefore, it becomes unnecessary after renewal to the vine type, but it is a heavy and heavy article that is about half the height of the hoistway, so it remains in the hoistway without being removed. In this remaining state, the hydraulic oil is removed from the hydraulic jack 6, and the plunger is fixed in a retracted state in the hydraulic cylinder.

  Here, when the hydraulic jack 6 is installed, a plurality of locations along the vertical direction are fixed via U-bolts 13 by fixing brackets 7 attached to the wall surface 8 of the building that is the inner wall of the hoistway 10. It is integrally held and fixed. The fixing bracket 7 includes a pair of bracket members 7b whose one ends are embedded in the wall surface 8, and a bracket member 7a provided integrally between the pair of bracket members 7b. The middle part of the U-shaped bolt 13 integrally surrounds the outer periphery of the hydraulic jack, and both end threaded parts penetrate the bracket member 7a and are integrally fastened and fixed by nuts. With this configuration, the hydraulic jack 6 is integrally supported and fixed by the fixing bracket 7. The holding structure of the hydraulic jack 6 by the fixing bracket 7 and the U-shaped bolt 13 remains in the hoistway 10 together with the hydraulic jack 6 even after the renewal.

  The counterweight 3 is guided and supported by the pair of guide rails 4 in the up-and-down direction at the side position of the hydraulic jack 6, that is, at the side of the elevator region of the car 1 in the hoistway 10. A traction machine 2 including a drive sheave 2a and a hoisting machine 2b is disposed between the counterweight 3 and the car 1. The traction machine 2 is supported by a tower structure (not shown) provided in the upper part of the hoistway 10. The driving sheave 2 a of the traction machine 2 is wound with a main rope (not shown) that passes through a car sheave 1 a provided in the car 1 and a deflecting sheave 12 provided in the hoistway 10. The main rope is also wound around a fishing support sheave 3 a of the counterweight 3. Therefore, the traction machine 2 moves the main rope in the length direction by the rotation of the drive sheave 2a, and drives the car 1 and the counterweight 3 up and down.

  As described above, the pair of guide rails 4 that guide and support the counterweight 3 are installed on the side of the elevator region of the car 1 in the hoistway 10, so that one rail 4a of the pair of guide rails 4 is provided. Is located near the hydraulic jack 6. As described above, the pair of guide rails 4 must be supported at intervals of 2.5 m in the length direction, but one rail 4a installed near the hydraulic jack 6 of the guide rail 4 is used. The remaining member on the hydraulic jack 6 side is used for the support. That is, by connecting the bracket 5a supporting the rail 4a to the member on the hydraulic jack 6 side remaining in the hoistway 10, at least a part along the length direction of the rail is supported and fixed by the hydraulic jack 6. To do.

  Specifically, as shown in FIG. 2, the rail supporting bracket 5a having an L-shaped cross section is welded to an existing hydraulic jack fixing bracket member 7b having an L-shaped cross section to support the rail 4a. To do. Since the rail support bracket 5a is thus welded to the existing bracket member 7b for fixing the hydraulic jack, the bracket 5b for attaching the rail support bracket 5a to the wall surface as shown in FIG. Since no embedding work by driving anchor bolts (not shown) is required, no loud noise is generated.

  In addition, since the full length of the hydraulic jack 6 is about half of the height of the hoistway 10, the member on the hydraulic jack 6 side cannot be used to support the rail 4a in the upper half of the hoistway 10. In this case, it is set as the support structure which requires the bracket 5b for wall surface attachment shown in FIG. 4 mentioned above. In this case, although noise due to anchor bolt driving occurs, a member on the side of the hydraulic jack 6 can be used to support the rail 4a portion corresponding to the height of the hydraulic jack 6. Therefore, the processing that requires anchor bolt driving shown in FIG. The number of locations (noise generation locations) can be halved, and discomfort due to noise given to residents can be reduced. Further, the use of the remaining member on the hydraulic jack 6 side for supporting the rail 4a means effective use of existing equipment, and construction with reduced material costs is possible.

  In addition, a support structure using a bracket 5a and a wall mounting bracket 5b is used for the other rail 4b of the pair of guide rails 4 (right side in the drawing), though not shown. In this case, the wall surface in which the wall mounting bracket 5b is embedded is either the back wall surface 8 (upper side in the figure) or the right side wall surface as shown in FIG. That is, when the back surface of the wall surface 8 is a living space, the wall surface mounting bracket 5b is embedded in the wall surface on the right side in the figure. When the back surface of the wall surface 8 is a living space, the wall surface mounting bracket 5b is embedded in the wall surface 8 as in FIG.

  When the rail 4b is supported by the right side in the figure, for example, as shown in FIG. 3, a wall mounting bracket 5b is embedded and fixed to the wall surface with anchor bolts, and the rail 4b is bolted to the bracket 5b. The attached support bracket 5a is integrally attached by welding. According to this support structure, the rail 4b can be firmly supported by the wall surface.

  In this way, as the wall surface for embedding the wall mounting bracket 5b, it is possible to select either the rear wall surface 8 or the right wall surface in the figure, so that construction in consideration of the place of residence becomes possible. Noise discomfort can be reduced as much as possible.

  Next, another support structure for the rail 4a located near the hydraulic jack 6 of the pair of guide rails 4 for guiding and supporting the counterweight 3 will be described with reference to FIG. In the example of FIG. 5, the rail 4 a is directly attached to the hydraulic jack 6 via the bracket 5 a and a U-shaped bolt 23 described later, and is supported by the hydraulic jack 6. In this case, as the bracket 5a for supporting the rail 4a, a bracket having a U-shaped cross section is used. And the rail 4a is bolted and fixed to one side (illustration right side part) of this U-shaped cross section. In addition, both ends of a U-shaped bolt 23 whose middle portion is joined to the outer periphery of the hydraulic jack 6 penetrates the other side (the left side portion in the drawing) of the U-shaped cross section of the bracket 5a. Nuts are screwed into both end thread portions of the U-shaped bolt 23, and are integrally fastened and fixed by these nuts.

  Here, although not shown in FIG. 5, the hydraulic jack 6 is firmly fixed to the wall surface 8 via the fixing bracket 7 and the U-shaped bolt 13 as shown in FIGS. 1 and 4. Therefore, as shown in FIG. 5, the rail 4 a is firmly supported by the hydraulic jack 6 by integrally connecting the rail 4 a to the hydraulic jack 6 by the bracket 5 a and the U-shaped bolt 23.

  Here, as described above, the guide rail 4 must be supported at a plurality of positions at intervals of 2.5 m or less with respect to the length direction, but the U-bolts 23 are arranged in the length direction of the hydraulic jack 6. However, since any quantity can be attached at any height position, the above requirements can be easily dealt with.

  As described above, the rail support brackets 5a are installed at intervals of 2.5 m or less with respect to the length direction of the rails, all of which are installed on the side of the hydraulic jack 6 as shown in FIG. 1 or FIG. It is difficult to connect to members, and at least one of them may be connected to a member on the hydraulic jack 6 side as shown in FIG. 1 or FIG. In any case, by adopting the support structure shown in FIG. 1 or FIG. 5, construction noise can be reduced and uncomfortable feeling given to the resident can be alleviated. In addition, the existing equipment can be used and the equipment cost can be reduced.

  Thus, in FIG. 1, the bracket 7 that fixes the existing hydraulic jack 6 is fixed before the renewal, and the guide rail 4 that guides the newly provided counterweight 3 up and down the hoistway after the renewal. Since it is also used for fixing the bracket 5a, the construction noise can be reduced and the material cost can be kept low.

  In FIG. 5, after the renewal, the bracket 5 a that fixes the guide rail 4 of the counterweight 3 newly provided is directly fixed by installing the U bolt 23 on the existing hydraulic jack 6. After all, construction noise can be reduced and material costs can be kept low.

  As a result, the existing hydraulic jack 6 can be renewed while being placed in the hoistway 10, and it is used not only for leaving but also for supporting the guide rail 4 of the counterweight 3 to be newly installed. Therefore, the distance between the counterweight 3 and the hydraulic jack 6 guided by the guide rail 4 can be arranged close to each other, and the space in the narrow hoistway 10 can be effectively utilized. In addition, construction on the building side is reduced, and unpleasant feelings for residents can be eased.

DESCRIPTION OF SYMBOLS 1 ... Car 2 ... Traction machine 3 ... Counterweight 4 ... Guide rail for balance weight 5a ... Bracket for rail support 6 ... Existing hydraulic jack 7 ... Bracket for hydraulic jack support 8 ... Wall surface 10 ... Hoistway 11 ... Car guide rails 13, 23 ... U-bolts

Claims (5)

An elevator apparatus that renews a hydraulic elevator that lifts and lowers the car by a hydraulic jack installed upright in the elevator hoistway to the side of the elevator lift area, and has a counterweight.
Rails installed near the hydraulic jacks of a pair of guide rails for guiding the counterweight in the up-and-down direction at the side of the elevator region of the car in the hoistway remain in the hoistway via a bracket. An elevator apparatus, wherein the elevator apparatus is connected to the hydraulic jack side member.   The elevator apparatus according to claim 1, wherein the rail supporting bracket is welded to an existing bracket that fixes the hydraulic jack to a hoistway inner wall.   2. The rail support bracket according to claim 1, wherein intermediate portions of the rail supporting brackets are integrally connected by nuts that are respectively screwed to both end portions of U-shaped bolts that are joined to the outer periphery of the hydraulic jack. Elevator device.   The elevator apparatus according to claim 1, wherein at least one of the rail supporting brackets is connected to a member on the hydraulic jack side. An elevator renewal method for renewing a hydraulic elevator that lifts and lowers the car by a hydraulic jack standing on the side of the elevator lifting / lowering area in the elevator hoistway into a slat type having a counterweight. ,
A pair of guide rails that guide the counterweight in the up-and-down direction at the side of the elevator region of the car in the hoistway, the rails installed near the hydraulic jack remain in the hoistway through a bracket. A method for renewing an elevator, wherein the member is connected to and fixed to a member on the hydraulic jack side.

Images