JP2007314339A - Device and method for supporting counterweight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and a method for supporting a counterweight capable of easily and efficiently supporting the counterweight by less number of support members without requiring troublesome operations that the support members are joined to each other. <P>SOLUTION: In this support device for supporting the counterweight 2 by the pit part 1a of the hoistway 1 of an elevator, support devices 12 are horizontally installed between the lower parts of a pair of guide rails 3 for guiding the lifting of the counterweight 2. A pair of support members 10 each formed of a bar-like article are disposed between the guide rails 3. The bottom ends of the support members 10 are abutted on the floor surface of the pit part 1a, and the intermediate part thereof is supported and vertically erected by the support devices 12. In this state, the counterweight 2 is lowered along the guide rails 3, and abutted on the top ends of the erected support members 10 for supporting. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a balance weight support device and a support method for supporting a balance weight at a pit portion of a hoistway when exchanging a main rope of an elevator.

  In general, an elevator is formed by suspending a weight and a carriage in a hoistway of a building via a main rope. The main rope is wound around a sheave of a hoisting machine installed at the upper part of the hoistway, and the car and the balance weight are moved up and down by driving by the hoisting machine.

  Since the main rope wears out or breaks the wire due to aging, it is necessary to replace the deteriorated main rope with a new main rope as a safety measure. When exchanging the main rope, the balance weight is lowered to the pit at the bottom of the hoistway and supported by the support device, and the car is supported by the chain block etc. on the upper part of the hoistway. The tension is removed, and in this state, the old main rope is recovered and replaced with a new main rope.

  A support device for lowering and supporting the counterweight to the pit portion of the hoistway is disclosed in JP-A-3-120189. This support device supports two counterweights by connecting two pipe-shaped support members that are vertically divided to the lower side of the counterweight, and abutting the support member against the floor surface of the pit portion. .

Japanese Patent Laid-Open No. 3-120189

  However, the conventional support device disclosed in Japanese Patent Application Laid-Open No. 3-120189 has a structure in which two support members are sequentially connected to the lower side of the balance weight to support the balance weight. There is a problem that labor is required, the number of supporting members increases, management and handling thereof become complicated, and work efficiency decreases.

  The present invention has been made paying attention to such points, and the object of the present invention is to easily and efficiently support the balance weight with a small number of support members without requiring the troublesome work of adding support members. An object of the present invention is to provide a balance weight support device and a support method that can be used.

  According to the first aspect of the present invention, in the support device for supporting the counterweight at the pit portion of the elevator hoistway, a support is horizontally installed between the lower portions of the pair of guide rails for guiding the counterweight to be lifted and lowered. One or a plurality of support members made of a single bar-like material are arranged between the guide rails, the lower end of the support member abuts against the floor surface of the pit portion, and the intermediate portion is the support member. The balance weight support device is characterized in that the balance weight is supported by the support member and vertically raised, and the balance weight is abutted against and supported by the upper end of the standing support member.

  The invention according to claim 2 is characterized in that the support member constructed between the pair of guide rails is configured to be extendable and contractible in the longitudinal direction.

  According to a third aspect of the present invention, there is provided a support device for supporting a counterweight at a pit portion of an elevator hoistway. The support device includes a single bar-like member between lower portions of a pair of guide rails for guiding the counterweight to be lifted and lowered. One support member is arranged adjacent to the one guide rail and the other guide rail, the lower end of each support member abuts against the floor surface of the pit portion, and the support member and the guide rail adjacent to each other Supports are horizontally installed between the support members, and each support member is supported by the support members so that the support members are vertically erected, and the balance weights are supported by the upper ends of the support members. It is a weight support device.

  According to a fourth aspect of the present invention, in the support device for supporting the counterweight at the pit portion of the elevator hoistway, the upper surface of the shock absorber mounting base disposed between the lower portions of the pair of guide rails for guiding the lift of the counterweight. A first support member is provided on the portion, and a second support member is provided on the lower surface portion of the counterweight, and each of the support members is formed with a through hole, and one or a plurality of supports made of a single rod-like object. The lower end portion of the member is inserted into the through hole of the first support member and abutted against the floor surface of the pit portion to erect the support member vertically, and the lower end portion of the counterweight is placed on the upper end portion of the support member. The counterweight support device is characterized in that the counterweight is supported by fitting a through hole of a support.

  According to a fifth aspect of the present invention, in the support device for supporting the counterweight at the pit portion of the elevator hoistway, the shock absorber disposed between the lower portions of the pair of guide rails for guiding the counterweight lift is covered. A box-shaped support is provided, and this support has a protrusion integrally on the upper surface, and the lower end of a support member made of a single bar-like material is fitted to the protrusion of the support to fix the support member. The balance weight supporting device is characterized in that the balance weight stands upright and abuts the balance weight against the upper end of the support member.

  The invention according to claim 6 is a support method for supporting the counterweight at the pit portion of the elevator hoistway, wherein a support is horizontally installed between the lower portions of the pair of guide rails for guiding the lift of the counterweight. And mounting one or more support members made of a single rod between the guide rails, the lower end of the support member abutting against the floor of the pit part, and the intermediate part The balance weight is supported by a support tool and vertically raised, and in this state, the balance weight is lowered along the guide rail and abuts against the upper end of the stand-up support member to support the balance weight. This is a method of supporting the counterweight.

  The invention according to claim 7 is characterized in that the support member constructed between the pair of guide rails is configured to be extendable and contractible in the longitudinal direction.

  The invention according to claim 8 is a support method for supporting the counterweight at the pit portion of the elevator hoistway, wherein a single rod-like object is provided between the lower portions of the pair of guide rails for guiding the counterweight to be lifted and lowered. The two supporting members are arranged adjacent to the one guide rail and the other guide rail, the lower end of each supporting member abuts against the floor surface of the pit portion, and the supporting member and the guide rail adjacent to each other The support members are horizontally installed and attached between the support members, and the support members are supported by the support members to stand vertically, and in this state, the counterweight is lowered along the guide rails to raise the stand. A balance weight supporting method, wherein the balance weight is supported by abutting against an upper end of the support member.

  The invention according to claim 9 is a support method for supporting the counterweight at the pit portion of the elevator hoistway, wherein the shock absorber mounting base is disposed between the lower portions of the pair of guide rails for guiding the lift of the counterweight. A first support member is provided on the upper surface of the counterweight, and a second support member is provided on the lower surface portion of the counterweight. Each of the support members is formed with a through hole. Alternatively, the lower end portions of the plurality of support members are inserted into the through holes of the first support member and abutted against the floor surface of the pit portion to erect the support members vertically, and in this state, the counterweight is placed on the guide rail. The counterweight is supported by supporting the counterweight by fitting the through hole of the support on the lower surface thereof to the upper end portion of the upstanding support member while lowering the base.

  The invention according to claim 10 is a support method for supporting the counterweight in the pit portion of the elevator hoistway, and covers the shock absorbers disposed between the lower portions of the pair of guide rails for guiding the lift of the counterweight. A box-shaped support is provided, and this support has a protrusion integrally on the upper surface, and the lower end of a support member made of a single rod-like object is fitted and supported by the protrusion of the support. A balance weight support characterized in that the balance weight is supported by standing up a member vertically and lowering the balance weight along the guide rail in this state to abut against the upper end of the raised support member. Is the method.

  According to the present invention, the balance weight can be easily and efficiently supported with a small number of support members without requiring a troublesome work of adding support members.

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

  FIG. 1 shows a first embodiment, and a pair of guide rails 3 that guide the lifting and lowering of the counterweight 2 are provided in the hoistway 1 so as to extend in parallel in parallel. A shock absorber mounting base 4 is installed in the pit portion 1 a of the hoistway 1. The shock absorber mounting base 4 is installed on the floor surface of the pit portion 1a so as to be disposed between the lower end portions of the pair of guide rails 3, and the shock absorber 5 is attached to an intermediate portion thereof.

  The counterweight 2 is suspended in the hoistway 1 by the main rope 8 and is moved up and down along the guide rail 3 by driving by a hoisting machine (not shown). On the lower side of the counterweight 2, a pair of support members 10 which are so-called single pipe pipes, which are so-called single rods, are provided vertically. Each of these support members 10 is composed of an integral pipe extending in one direction, and is disposed between the pair of guide rails 3 and has its lower end passing through the space inside the shock absorber mounting base 4 to the floor surface of the pit portion 1a. It has been hit.

  A support 12 is horizontally installed between the pair of guide rails 3 via fasteners 13 such as bolts, and the vertical intermediate portions of the pair of support members 10 are respectively connected to the support 12 with, for example, U bolts 14a. It is fastened and fixed via a fastener 14 comprising a nut 14b, whereby each support member 10 is supported so as to stand vertically. The balance weight 2 is supported by the pair of support members 10 when the main rope 8 is replaced.

  The work procedure for exchanging the main rope 8 will be described. First, in the pit portion 1 a of the hoistway 1, a support 12 is attached between a pair of guide rails 3 with a fastener 13 and laid horizontally. A pair of support members 10 are arranged between the lower ends of the support members 10 and the floors of the pit portions 1a are brought into contact with each other. The intermediate portion is fastened to the support 12 with a fastener 14 including a U bolt 14a and a nut 14b. Support vertically.

  Next, the hoisting machine (not shown) is driven to lower and lower the counterweight 2, the lower end of the hoisting machine is supported against the upper end of the support member 10, and the counterweight (not shown) is supported. ) Is lifted to the upper part of the hoistway 1 using a chain block or the like to remove the tension applied to the main rope 8.

  In this state, the old main rope 8 is removed from the counterweight 2 and the car and recovered, and a new main rope 8 is connected to the counterweight 2 and the car instead of the old main rope 8. Thereafter, the counterweight 2 is pulled up via the replaced main rope 8, each support member 10 is removed from the support 12, and the support 12 is removed from the guide rail 3.

  As described above, conventionally, a plurality of support members are attached to the lower side of the balance weight so as to be sequentially added, and the balance weight is supported by the added support member. A support member 10, which is a single product having a predetermined length, is vertically attached to the lower portion of the guide rail 3, and the balance weight 2 is supported by the support member 10. For this reason, the work of adding the support member 10 is performed. It is unnecessary, the work is simplified, the support member 10 can be easily and efficiently installed, the balance weight 2 is efficiently supported, and the replacement work of the main rope 8 can be performed efficiently.

  2 and 3 show a second embodiment. In this embodiment, a pair of support members 10 are adjacent to one guide rail 3 and the other guide rail 3 between the guide rails 3, respectively. A plurality of support members 12 are installed between the support member 10 and the guide rail 3 adjacent to each other, and the support members 10 stand upright via the support members 12. So that it is supported.

  Also in this case, each support member 10 is formed of a single rod-like object extending in one direction, and its lower end is abutted against the floor surface of the pit portion 1a. As shown in FIG. 3, each support 12 has a U-shaped receiving portion 16 at an end portion on one end side, and a bolt 17 as a fastener is screwed into the receiving portion 16. The teeth 3 a of the guide rail 3 are interposed in the U-shaped space, and the support 12 is fastened and fixed to the guide rail 3 by fastening the teeth 3 a with the bolts 17.

  A clamp 20 is provided at the other end of the support 12, and the support member 10 is fastened to the end of the support 12 by the clamp 20. The clamp 20 includes a fixed piece 20a attached to the support member 12, and a movable piece 20b attached to the fixed piece 20a so as to be openable and closable, and is supported between the fixed piece 20a and the movable piece 20b. The support member 10 is fastened and fixed to the support 12 by sandwiching the member 10 and fastening the movable piece 20b with a nut 20c as a fastener.

  A pair of support members 10 disposed between the guide rails 3 are attached to the adjacent guide rails 3 with a certain interval by the support 12. The support 12 is provided so as to be divided into a lower portion and a substantially intermediate portion of the support member 10. Then, the balance weight 2 is supported by lowering the balance weight 2 and abutting against the upper end of the support member 10 when the main rope is replaced.

  Even in such an embodiment, a single support member 10 having a predetermined length is vertically attached to the lower part of the guide rail 3, and the counterweight 2 is supported by the support member 10 for this purpose. The work of adding the member 10 is unnecessary, the work is simplified, the support member 10 can be easily installed efficiently and the balance weight 2 is efficiently supported, and the work of exchanging the main rope can be performed efficiently.

  4 and 5 show a third embodiment. A pair of support members 10 are vertically provided between the guide rails 3, and these support members 10 are supported between the guide rails 3. It is supported via the tool 12. And in this embodiment, the said support 12 becomes a structure which can be expanded-contracted in the longitudinal direction.

  That is, the support 12 includes a strip-shaped intermediate plate 21 and strip-shaped movable plates 22 disposed on both ends of the intermediate plate 21, and each movable plate 22 has a long slot along its longitudinal direction. 23, bolts 24 are screwed into the intermediate plate 21 from the respective long holes 23, and the movable plate 22 is fixed to the intermediate plate 21 by tightening these bolts 24, and the bolts 24 are loosened to the intermediate plate 21. The movable plate 22 is moved in the longitudinal direction to expand and contract, and the bolt 24 is tightened again at a predetermined position, whereby the support 12 having a predetermined length can be obtained.

  And the U-shaped receiving part 26 is provided in the release | release side edge part of each movable plate 22, The volt | bolt 27 as a fastener is screwed in these receiving parts 26, respectively, and the U-shaped of each receiving part 26 is carried out. The tooth portion 3 a of the guide rail 3 is interposed in the space, and the support portion 12 is fastened and fixed to the guide rail 3 by tightening the tooth portion 3 a with the bolt 27.

  Clamps 30 are provided at both ends of the intermediate plate 21. These clamps 30 have a fixed piece 30a attached to the intermediate plate 21, and a movable piece 30b attached to the fixed piece 30a so as to be openable and closable, and are supported between the fixed piece 30a and the movable piece 30b. The support member 10 is fastened and fixed to the intermediate plate 21 by sandwiching the member 10 and fastening the movable piece 30b with a nut 30c as a fastener.

  The procedure for installing the support member 10 will be described. First, the length of the support 12 is adjusted to the distance between the pair of guide rails 3, and the U-shaped space portion of the receiving portion 26 on both ends of the support 12 is set. The guide rail 3 is fitted to the tooth portion 3 a, the bolts 27 are tightened to fix the receiving portions 26 to the guide rails 3, and the support 12 is horizontally installed between the guide rails 3.

  Next, the support member 10 is erected on the floor surface of the pit portion 1a, and an intermediate portion thereof is sandwiched between the fixed piece 30a and the movable piece 30b of the clamp 30 of the support member 12, and is tightened with the nut 30c. Is supported upright. Thereafter, the counterweight 2 is lowered and supported against the upper end of the support member 10, and the main rope 8 is exchanged.

  Even in this case, when installing the support member 10, the work of adding the support member 10 is unnecessary, the work is simplified, and the support member 10 can be easily and efficiently installed on the floor surface of the pit portion 1a. Therefore, the replacement work of the main rope can be performed skillfully.

  And especially in this embodiment, since the support 12 is comprised so that expansion-contraction is possible, even if it is an elevator of the specification from which the space | interval width of a pair of guide rail 3 differs, the length of the support 12 is set to the guide rail 3. The support 12 can be commonly used for elevators of different specifications adjusted to fit the interval width.

  FIGS. 6 to 8 show a fourth embodiment. In this embodiment, support members 12 are provided on the upper surface portion of the shock absorber mounting base 4 and the lower surface portion of the counterweight 2. As shown in FIGS. 7 and 8, the support 12 provided on the upper surface portion of the shock absorber mounting base 4 has a U-shaped cross section in which side plates 34 are integrally provided on both side edges of the flat plate 33. 34 is arranged on the shock absorber mounting base 4 with the side facing downward. An opening 35 for passing the shock absorber 5 is formed in the middle portion of the flat plate 33 of the support 12, and circular through holes 36 for passing the support member 10 are formed at both ends, and the shock absorber 5 is passed through the opening 35. Protrudes above the flat plate 33.

  Bolts 39 as fasteners are screwed into the side plates 34 of the supporter 12 from the outside to the inside, and the tip portions of these bolts 39 abut against the side plates of the shock absorber mounting base 4. The support member 12 is fixed to the shock absorber mounting base 4 by tightening 39. Then, by adjusting the screw retraction length of the bolts 39 on both sides, the support 12 is moved in the front-rear direction perpendicular to the longitudinal direction of the shock absorber mounting base 4 with respect to the shock absorber mounting base 4. By loosening, the support 12 can be moved in the left-right direction along the longitudinal direction of the shock absorber mounting base 4.

  The support 12 provided on the lower surface portion of the counterweight 2 is also attached to the counterweight 2 with the same structure, and circular through holes 36 for passing the support member 10 are formed at both ends of the flat plate 33.

  When the support member 10 is installed, first, the lower end portion of each support member 10 is inserted into each through hole 36 of the support 12 provided on the shock absorber mounting base 4, and the lower end surface of the support member 10 is connected to the pit portion 1a. Each support member 10 is erected against the floor surface.

  Next, the counterweight 2 is lowered and lowered, and the through holes 36 of the support 12 provided on the lower surface thereof are fitted into the upper end portions of the support members 10 in the upright state, and the lower surface of the counterweight 2 is It abuts against the upper end surface of the support member 10. Thereby, each support member 10 is stably supported, and the counterweight 2 is stably supported by each support member 10. In this state, the main rope is exchanged.

  Even in this case, when the support member 10 is installed, the troublesome work of adding the support member 10 is unnecessary, the work is simplified, and the support member 10 is easily and efficiently installed on the floor surface of the pit portion 1a. Therefore, the replacement work of the main rope can be performed efficiently.

  9 to 11 show a fifth embodiment. In this embodiment, a support 12 configured in a box shape is provided on the shock absorber mounting base 4 so as to cover the shock absorber 5. Yes. And the protrusion 12a which consists of a steel pipe etc. is integrally attached to the upper surface of this support tool 12 by welding etc. so that it may stand upright.

  When installing the support member 10, first, the lower end portion of the support member 10 is inserted into the protrusion 12 a of the support 12 provided on the shock absorber mounting base 4 to stand. Next, the counterweight 2 is lowered and the lower surface thereof is abutted against the upper end surface of the support member 10 in the standing state. As a result, the support member 10 is sandwiched between the counterweight 2 and the support 12 and stably supported, and the counterweight 2 is stably supported by the support member 10. In this state, the main rope is exchanged.

  Even in this case, when the support member 10 is installed, the troublesome work of adding the support member 10 is unnecessary, the work is simplified, and the support member 10 can be easily and efficiently installed. Can be done neatly.

The perspective view which shows the support apparatus which concerns on 1st Embodiment of this invention. The front view which shows the support apparatus which concerns on 2nd Embodiment of this invention. The top view which shows the structure of the support in the support apparatus. The front view which shows the support apparatus which concerns on 3rd Embodiment of this invention. The top view which shows the structure of the support in the support apparatus. The front view which shows the support apparatus which concerns on 4th Embodiment of this invention. The side view which shows the structure of the support in the support apparatus. The top view which similarly shows the structure of a support. The front view which shows the support apparatus which concerns on 5th Embodiment of this invention. The top view which shows the structure of the support in the support apparatus. The top view which similarly shows the structure of a support.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hoistway 1a ... Pit part 2 ... Balance weight 3 ... Guide rail 3a ... Tooth part 4 ... Shock absorber mount 5 ... Shock absorber 8 ... Main rope 10 ... Support member 12 ... Supporting tool 13 ... Fastening tool 14 ... Fastening tool 16 ... receiving part 20 ... clamp 21 ... intermediate plate 22 ... movable plate 30 ... clamp 35 ... opening 36 ... through hole

Claims (10)

In the support device that supports the counterweight in the pit part of the elevator hoistway,
A support is horizontally installed between the lower portions of the pair of guide rails that guide the lifting and lowering of the counterweights, and one or more support members made of a single bar are arranged between the guide rails. The lower end of the support member is abutted against the floor surface of the pit portion, and the intermediate portion is supported vertically by the support member, and the balance weight is abutted against the upper end of the standing support member. A support device for a counterweight, characterized in that   The balance weight support device according to claim 1, wherein the support member installed between the pair of guide rails is configured to be extendable and contractible in a longitudinal direction thereof. In the support device that supports the counterweight in the pit part of the elevator hoistway,
Between the lower portions of the pair of guide rails that guide the lifting and lowering of the counterweight, two support members made of a single bar are arranged adjacent to the one guide rail and the other guide rail, The lower end of the support member is abutted against the floor surface of the pit part, and support members are horizontally installed between the support member and the guide rail adjacent to each other, and each support member is supported by these support members. A balance weight support device, wherein the balance weight is supported vertically by abutting the balance weight against the upper ends of the support members. In the support device that supports the counterweight in the pit part of the elevator hoistway,
A first support member is provided on the upper surface portion of the shock absorber mounting base disposed between the lower portions of the pair of guide rails for guiding the lifting and lowering of the counterweight, and a second support member is provided on the lower surface portion of the counterweight. These support members are each formed with a through hole, and the lower end portions of one or a plurality of support members made of a single rod-like object are inserted into the through holes of the first support member to form the floor surface of the pit portion. The balance weight is characterized by supporting the balance weight by vertically raising the support member by abutting and fitting a through hole of a support on a lower surface portion of the balance weight to an upper end portion of the support member. Support device. In the support device that supports the counterweight in the pit part of the elevator hoistway,
A box-shaped support is provided so as to cover a shock absorber disposed between the lower portions of the pair of guide rails that guide the lifting and lowering of the counterweight. A lower end portion of a support member made of a single rod-like object is fitted to a projection portion of the support member so that the support member stands vertically, and is supported by abutting the counterweight against the upper end of the support member. Supporting device for counterweight. A support method for supporting a counterweight at a pit portion of an elevator hoistway,
A support is horizontally installed between the lower portions of the pair of guide rails that guide the lifting and lowering of the counterweights, and one or more support members made of a single bar are arranged between the guide rails. The lower end of the support member is abutted against the floor surface of the pit portion, and the intermediate portion is supported by the support member to stand upright. In this state, the counterweight is lowered along the guide rail. A balance weight support method, wherein the balance weight is supported by abutting against an upper end of the support member raised up.   The method of supporting a counterweight according to claim 6, wherein the support member constructed between the pair of guide rails is configured to be extendable and contractible in a longitudinal direction thereof. A support method for supporting a counterweight in a pit portion of an elevator hoistway,
Between the lower portions of the pair of guide rails that guide the lifting and lowering of the counterweight, two support members made of a single bar are arranged adjacent to the one guide rail and the other guide rail, The lower end of the support member is abutted against the floor surface of the pit part, and support members are horizontally installed between the support member and the guide rail adjacent to each other, and each support member is supported by these support members. A method for supporting a counterweight, wherein the counterweight is vertically raised, and in this state, the counterweight is lowered along the guide rail and abuts against an upper end of the upright support member to support the counterweight. A support method for supporting a counterweight in a pit portion of an elevator hoistway,
A first support member is provided on the upper surface portion of the shock absorber mounting base disposed between the lower portions of the pair of guide rails for guiding the lifting and lowering of the counterweight, and a second support member is provided on the lower surface portion of the counterweight. These support members are each formed with a through hole, and the lower ends of one or a plurality of support members made of a single rod-like object are inserted into the through holes of the first support member, and the floor of the pit part is formed. The support member is erected vertically by abutting against the surface, and in this state, the counterweight is lowered along the guide rail while the through hole of the support member on the lower surface portion is formed on the upper end portion of the erection support member. A method for supporting a counterweight, wherein the counterweight is supported by fitting. A support method for supporting a counterweight in a pit portion of an elevator hoistway,
A box-shaped support is provided so as to cover a shock absorber disposed between the lower portions of the pair of guide rails that guide the lifting and lowering of the counterweight. A lower end portion of a support member made of a single rod is fitted to the protrusion of the support member to erect the support member vertically, and in this state, the counterweight is lowered along the guide rail to elevate the position. A balance weight supporting method, wherein the balance weight is supported by abutting against an upper end of the support member.

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