JP2005263351A - Counterweight frame spreading preventing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enough obtain the constraining force for preventing spreading of a counterweight frame when an earthquake occurs while not requiring welding work in a job side. <P>SOLUTION: A held plate 8 is held between a pair of upper and lower sub-weights 6m, 6m+1 positioned in the substantially central part, and both end parts thereof are bent to cross the lower sub-weight 6m+1. Support plates 9 are disposed along both sides of the sub-weights 61 to 6N, and extended along the longitudinal direction of the sub-weight to be fixed to both ends of the held plate 8. A frame deformation constraining member 10 is shaped to hold a column member 3 extended in the vertical direction of the counterweight frame 2, and fixed to both ends of the support plate 9 by a screw member having the fastening force directed in the longitudinal direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a counterweight frame spread prevention device for preventing a subweight constituting a counterweight from falling due to the spread of a counterweight frame when an earthquake occurs.

  A counterweight that moves up and down in the hoistway along the guide rail extending in the vertical direction in the hoistway is a counterweight frame to which a guide shoe guided by the guide rail is attached, and the counterweight. And a plurality of long sub-weights stacked in the vertical direction inside the weight frame.

  This counterweight is provided with a counterweight frame spread prevention device for preventing the counterweight from spreading and dropping the subweight when an earthquake occurs. The counterweight frame spread prevention device is installed by attaching various members such as a plate, a frame and a bracket to the counterweight at the construction site.

  And when performing attachment of the said various members on the spot, it is requested | required that it may not perform a welding operation as much as possible. This is because if a welding operation is performed at the site, a considerable amount of labor is spent on the preparation of welding equipment at the site, and a predetermined time has passed to confirm that no ignition occurs after the welding operation is completed. This is because the work time must be increased as a result. Furthermore, if various members are attached by welding on site, it is also difficult to change the member position after attachment.

Thus, for example, Patent Document 1 proposes a technique that eliminates the need for on-site welding work by adopting a configuration in which the fixing bracket is assembled to the outside of the counterweight frame and the fixing bracket is tightened with bolts and nuts.
JP 2001-180880 A

  However, in the configuration of Patent Document 1, a flange portion is formed on the fixture, and the flange portion is tightened with a bolt and a nut. Therefore, with such a configuration, a sufficient tightening force cannot be obtained. Therefore, there is a possibility that the fixing bracket cannot sufficiently restrain the spread of the counterweight frame when an earthquake occurs.

  The present invention has been made in view of such circumstances, and a counter capable of sufficiently obtaining a restraining force for preventing the spread of the counterweight frame in the event of an earthquake while eliminating the need for on-site welding work. An object of the present invention is to provide a weight frame spread prevention device.

  As a means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that a counterweight frame to which a guide shoe guided by a guide rail extending in the vertical direction in the hoistway is attached, and inside the counterweight frame. A plurality of elongated sub-weights stacked in the vertical direction, and a counterweight that moves up and down in the opposite direction along the guide rail along the guide rail. A sandwiched plate sandwiched between a pair of upper and lower subweights positioned at substantially the center of the long subweight and bent at both ends so as to straddle the lower subweight, and the subweight A pair of elongated shapes that are disposed along both side surfaces of the substrate and extend along the longitudinal direction of the subweight and are fixed to both ends of the sandwiched plate. A holding plate and a shape for holding the portion extending in the vertical direction of the counterweight frame, and a clamping force toward the longitudinal direction of the long support plate at both ends of the pair of long support plates And a pair of frame deformation restraining members fixed by a screw member.

  According to a second aspect of the present invention, in the first aspect of the present invention, the frame deformation restraining member has a substantially U-shaped cross-sectional shape and holds the portion extending in the vertical direction of the counterweight frame. A pair of frame holding brackets arranged on the upper and lower sides, and a transition plate having both ends welded to the pair of frame holding brackets arranged on the upper and lower sides, respectively.

  The invention according to claim 3 is the invention according to claim 2, wherein a fastening plate is attached to the transition plate, and the fastening plate is fastened by a bolt member welded to an end portion of the long support plate. It is characterized by that.

  According to the present invention, a pair of long support plates fixed to a sandwiched plate sandwiched between subweights, and a pair of frames having a shape for holding a portion extending in the vertical direction of the counterweight frame. The counterweight frame is surrounded by the deformation restraining member, both ends of the pair of long support plates and the pair of frame deformation restraining members are fixed by screw members, and the tightening force thereof is the long support plate. It goes to the longitudinal direction. Therefore, the elongate support plate and the frame deformation restraining member are firmly fixed, and the restraining force for preventing the counterweight frame from spreading can be sufficiently increased.

  FIG. 1 is a front view showing a counterweight to which a counterweight frame spread preventing device according to an embodiment of the present invention is attached. In this figure, a counterweight 1 includes a counterweight frame 2 formed by a pair of left and right column members 3 and 3 and a pair of upper and lower beam members 4 and 4. A pair of guide shoes 5, 5 are attached to the upper side of the counterweight frame 2, and a pair of guide shoes 5, 5 are also attached to the lower side. These guide shoes 5 are guided by guide rails (not shown) extending in the vertical direction in the hoistway, so that the counterweight 1 can move up and down along the guide rails in the hoistway. .

  Inside the counterweight frame 2, N (N is an appropriate integer of 2 or more) subweights 61 to 6N are arranged in a stacked state. These subweights are arranged so as to slide one by one into the inside of the counterweight frame 2 from the notch grooves 3a, 3a formed in the column members 3, 3 in a slightly inclined posture (in the horizontal direction). It has been done. Note that the uppermost subweight 61 is pressed by the pressing plate 7 and is prevented from jumping upward.

  A counterweight frame spread prevention device is attached in the vicinity of the substantially central portion of the subweights 61 to 6N. This counterweight frame spread prevention device is provided between a pair of upper and lower subweights 6m and 6m + 1 located substantially in the middle of the subweights 61 to 6N (m is an appropriate integer in the range of 1≤m≤N). A pair of left and right sandwiched plates 8, 8 sandwiched, a pair of support plates 9, 9 disposed along both side surfaces of the subweight and fixed to the sandwiched plates 8, 8, and both ends of the support plate 9 And a frame deformation restraining member 10 fixed with a screw member via a fastening plate 11.

  FIG. 2 is a perspective view showing the external shape of the main members constituting the counterweight frame spread prevention device. As shown in FIG. 1, the sandwiched plate 8 is sandwiched between a pair of upper and lower subweights 6m and 6m + 1, and both ends of the sandwiched plate 8 are lower subweights 6m. It is bent downward to cross +1. And a pair of support plates 9 and 9 are welded inside the both ends of this sandwiched plate 8. Further, the base end portions of the pair of stud bolts 14 and 14 are welded to the inner end portions of the pair of support plates 9 and 9 so as to have a pitch dimension P2.

  The frame deformation restraining member 10 includes a pair of upper and lower frame holding brackets 12 and 12 and a transition plate 13 having both ends welded therebetween. The frame holding bracket 12 has a substantially U-shaped cross-sectional shape, and is arranged in an attitude of holding the portion extending in the vertical direction of the counterweight frame 2, that is, the column member 3 inside thereof. A pair of screw holes 13a, 13a are formed in the center portion of the transition plate 13 with a pitch dimension P1.

  The fastening plate 11 has a substantially L-shaped cross-sectional shape, and is formed with a pair of holes 11a and 11a having a pitch dimension P1 and a pair of holes 11b and 11b having a pitch dimension P2.

  FIG. 3 is a partially enlarged view showing the details of part A of FIG. As shown in this figure, since the intermediate portion of the sandwiched plate 8 is sandwiched between the subweight 6m and the subweight 6m + 1, a gap S is generated between both subweights. A threaded portion at the tip of the stud bolt 14 welded to the inside of the support plate 9 is inserted through the hole 11b of the fastening plate 11, and a nut 15 is screwed into the threaded portion. Accordingly, the frame deformation restraining member 10 is fastened by the force in the horizontal direction, that is, the longitudinal direction of the support plate 9 by the fastening plate 11 and the nut 15 which are screw members.

  FIG. 4 is an arrow view from the IV-IV direction of FIG. In this figure, two hexagon bolts 16 not shown in FIGS. 1 to 3 are shown. The tip screw portions of the two hexagon bolts 16 are screwed into the screw holes 13a through the holes 11a shown in FIG. And the stud bolt 14 mentioned above is located in the outer side of this hexagon bolt 16, The nut 15 is screwed by the front-end | tip thread part which penetrated the hole 11b.

  FIG. 5 is an arrow view from the VV direction of FIG. This figure shows the widths of the subweights 6m, 6m + 1 and the width of the sandwiched plate 8 in comparison. In addition, illustration of the stud bolt 14 is abbreviate | omitted in this figure.

  Next, the installation work of the counterweight frame spread prevention device configured as described above will be described. The worker first moves the counterweight 1 (assuming that no subweight is initially attached) to a pit that is a work place in the hoistway. Then, the sub-weight 6N to the sub-weight 6m + 1 are arranged one by one in order inside the counterweight frame 2 through the cutout grooves 3a and 3a.

  Next, the worker brings in the assembly of the sandwiched plate 8, the stud bolt 14, and the stud bolt 14 shown in FIG. 2, and the pair of support plates 9, 9 follow the both sides of the subweight 6 m +1, respectively. The intermediate portion of the sandwiched plate 8 is placed on the upper surface of the subweight 6m + 1. In this case, the worker can smoothly hide one of the pair of support plates 9 and 9 behind the subweight 6m + 1 by slightly tilting the assembly.

  Then, the worker attaches the fastening plate 11 to the transition plate 13 by applying the fastening plate 11 to the intermediate portion of the transition plate 13 of the frame deformation restraining member 10 and tightening with the hexagon bolt 16. The worker positions the two sets of frame deformation restraining members 10 to which the fastening plate 11 is attached in this manner at both ends of the support plate 9, and further, the tip of the stud bolt 14 with respect to the hole 11 b of the fastening plate 11. Insert the screw part. Thereafter, the worker screws the nut 15 onto the tip screw portion of the stud bolt 14 protruding from the hole portion 11b. As a result, the fastening between the support plate 9 and the frame deformation restraining member 10 is firmly performed via the fastening plate 11.

  In this way, after the counterweight frame spread prevention device is attached, the worker arranges the subweights 6m to 61 in order inside the counterweight frame 2 through the cutout grooves 3a and 3a one by one. This completes all the work of attaching the counterweight frame spread prevention device to the counterweight 1 of the worker.

  Considering the configuration of the counterweight frame spread prevention device of the present embodiment mounted as described above, the worker's mounting work is all tightening of bolt members or screw members, and welding work is unnecessary. Therefore, the work efficiency is good. Therefore, even when the attachment position is changed after the attachment is performed once, the attachment can be easily performed again.

  Also, in terms of strength, the pair of frame deformation restraining members 10 and 10 positioned at both ends of the support plate 9 are firmly fastened via the fastening plate 11 with a tightening force directed in the longitudinal direction of the support plate 9. So it has become very good. Therefore, when an earthquake occurs, it can be expected that the counterweight frame 2 is effectively prevented from spreading and the subweights 61 to 6N are reliably prevented from falling.

The front view which shows the counterweight with which the counterweight frame spread prevention apparatus which concerns on embodiment of this invention was attached. The perspective view which showed the external appearance shape of the main member which comprises the counterweight frame spread prevention apparatus in FIG. The elements on larger scale which show the detail about the A section of FIG. The arrow view from the IV-IV direction of FIG. The arrow view from the VV direction of FIG.

Explanation of symbols

1 Counterweight 2 Counterweight frame 3 Column member (Counterweight frame)
3a Notch groove 4 Beam member (counterweight frame)
5 Guide shoes 61 to 6N Subweights 6m, 6m + 1 A pair of upper and lower subweights 7 positioned substantially in the center 7 Holding plate 8 Holding plate 9 Support plate 10 Frame deformation restraining member 11 Fastening plate 11a Hole 11 Hole 12 Frame Holding bracket 13 Transition plate 13a Screw hole 14 Stud bolt 15 Nut 16 Hexagon bolt S Clearance

Claims (3)

A counterweight frame attached with a guide shoe guided by a guide rail extending vertically in the hoistway;
A plurality of long sub-weights stacked in the vertical direction inside the counterweight frame;
In a counterweight that moves up and down in the opposite direction along the hoistway along the guide rail,
Of the plurality of stacked long sub-weights, the object is sandwiched between a pair of upper and lower sub-weights positioned substantially at the center and bent at both ends so as to straddle the lower sub-weight. A clamping plate;
A pair of elongated support plates disposed along both side surfaces of the subweight, extending along the longitudinal direction of the subweight, and fixed to both ends of the sandwiched plate;
A screw member having a shape for holding a portion extending in the vertical direction of the counterweight frame, and having a tightening force toward the longitudinal direction of the long support plate at both ends of the pair of long support plates A pair of frame deformation restraining members fixed by
Having
A counterweight frame spread prevention device characterized by that. The frame deformation restraining member is
A pair of frame holding brackets each having a substantially U-shaped cross-sectional shape and arranged vertically in a posture to hold a portion extending in the vertical direction of the counterweight frame;
A transition plate having both ends welded to a pair of frame holding brackets arranged above and below,
Composed of,
The counterweight frame spread prevention device according to claim 1. A fastening plate is attached to the transition plate, and the fastening plate is fastened with a bolt member welded to an end of the long support plate.
The counterweight frame spread prevention device according to claim 2.

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