JP5250521B2 - Elevator counterweight and elevator device using the same - Google Patents

Description

  The present invention relates to a counterweight of an elevator and an elevator apparatus using the same.

  The elevator includes a carriage and a counterweight that are suspended from each other in a hoistway. The counterweight is a balance weight frame in which a plurality of counterweight pieces are mounted, and the weight of the counterweight is adjusted according to the number of counterweight pieces. The counterweight frame is mainly composed of a pair of vertical frames, an upper frame that connects the upper ends of the vertical frames, and a lower frame that connects the lower ends of the vertical frames.

  In general, the balance frame of a standard elevator is designed to improve manufacturability by simplifying the structure without considering the load on the vertical frame due to rolling or the like during an earthquake.

  Some of them have a fall prevention structure so that the counterweight pieces do not fall from the counterweight frame due to an earthquake or the like. As a counterweight frame having such a structure, a recess is formed in the counterweight piece, a protrusion is provided on the counterweight frame's vertical frame, and the protrusion of the counterweight frame is fitted into the counterweight's recess. There is one that prevents the weight piece from falling (for example, see Patent Document 1).

Japanese Utility Model Publication No. 57-53468

  However, the counterweight having the fall prevention structure described in Patent Document 1 receives the load of the counterweight piece only at the protrusion of the counterweight frame when, for example, a roll due to an earthquake or the like occurs, so that the protrusion breaks. There is a possibility that there is a problem that, when the protruding portion is broken, the counterweight piece falls. Further, since the counterweight frame uses a member such as a bolt when the protrusion is provided on the vertical frame, the number of parts increases, and the number of manufacturing steps and the number of managed parts increase.

  On the other hand, in order to prevent the counterweight pieces from falling off the counterweight frame, a reinforcing member that connects the left and right vertical frames is provided separately from the upper and lower frames to restrain the opening of the left and right vertical frames. However, there is a problem that the counterweight frame becomes large because the counterweight piece cannot be mounted inside the reinforcing member that connects the left and right vertical frames.

  In order to solve the above problems, the object of the present invention is to avoid the risk of breakage of the counterweight frame, improve the risk of falling of the counterweight piece, and efficiently mount the counterweight piece on the counterweight frame. An object of the present invention is to provide an elevator counterweight and an elevator apparatus equipped with the same that can reduce the space or weight of the counterweight and can be manufactured at low cost.

In order to achieve the above object, the counterweight according to the present invention comprises a pair of vertical frames, an upper frame that connects the upper ends of the vertical frames, and a lower frame that connects the lower ends of the vertical frames. In a counterweight of an elevator in which a plurality of counterweight pieces are held in a counterweight frame, the vertical frame, the upper frame and the lower frame are formed by cutting and bending a face plate, and the vertical frame Is formed with a notch hole for fixing the counterweight piece, the notch hole is formed vertically in the longitudinal direction of the vertical frame, and at least one of the counterweight pieces is notched. It is a counterweight piece for fixing provided with a protrusion that fits into the hole .

  In the counterweight according to the present invention, the counterweight piece is composed of at least one fixing counterweight piece and at least one standard counterweight piece on which the protrusion is not formed, and the cutting frame is cut into the cutting frame. The standard counterweight piece is held at a position where the notched hole is not formed, and the standard counterweight piece is held at the position where the notched hole is formed in the vertical frame or the protrusion. It is desirable that the fixing counterweight piece is fixed by fitting the notch into the notch hole.

  Further, an elevator apparatus according to the present invention is an elevator comprising a hoistway, a car and a counterweight that are provided in the hoistway and are suspended in a suspending manner, and the counterweight is the counterweight described above. It is characterized by being.

The present invention has the following effects.
(1) Without increasing the number of parts constituting the counterweight, the risk of breaking the counterweight frame can be avoided and the risk of dropping the counterweight piece can be improved.
(2) Since the counterweight piece can be efficiently mounted on the counterweight frame, the total weight of the counterweight frame increases, the height of the counterweight frame's vertical frame can be reduced, and space saving can be realized. be able to.
(3) Since the counterweight piece can be efficiently mounted on the counterweight frame, the weight of the counterweight can be increased even if the height of the vertical frame is the same as before, and the range of application of the counterweight frame can be increased. Can be expanded. As a result, it is possible to improve work efficiency and reduce prices.

It is a front view which shows the structure of the counterweight frame of one Embodiment which concerns on this invention. It is a front view which shows the state of the rolling of the counterweight frame of FIG. It is a top view which shows the counterweight for fixation. It is a top view which shows a standard counterweight piece.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.

  FIG. 1 is a front view showing a counterweight of the present embodiment. As shown in FIG. 1, the counterweight includes a counterweight frame 1 and a plurality of counterweight pieces (balanced weight elements) 5 and 6 mounted on the counterweight frame. The counterweight frame 1 includes a pair of vertical frames 3, a lower frame 2 that connects lower ends of the vertical frame 3, and an upper frame 4 that connects upper ends of the vertical frame 3. The vertical frame 3 and the lower frame 2 and the vertical frame 3 and the upper frame 4 are connected by bolts. A guide device 8 that engages with a pair of guide rails 7 standing on the hoistway of the building is provided on each of the upper end portion and the lower end portion of the vertical frame 3. The lifting / lowering movement of the counterweight is guided by the guide rail 7 and the guide device 8.

  The vertical frame 3 constituting the counterweight frame 1 is formed by cutting and bending each face plate, and is bent into a U-shape when viewed from the direction of arrow A in the figure. The vertical frame 3 is formed with a notch 10 for fixing the counterweight piece 6. The cutout hole 10 is formed in a substantially rectangular shape that is vertically long in the longitudinal direction of the vertical frame 3 (the drawing, the vertical direction). The left and right cutout holes 10 formed in the pair of vertical frames 3 are arranged at the same position in the middle portion of the vertical frame 3 in the longitudinal direction. Since the counterweight frame 1 of the present embodiment is formed by cutting and bending a face plate, it is possible to easily form the notch hole 10 that was difficult with a counterweight frame made of a conventional mold steel or the like. doing.

  A plurality of counterweight pieces 5 and 6 are stacked between the vertical frames 3. The plurality of counterweight pieces 5 and 6 are supported and stacked on the lower frame 2, and the uppermost counterweight piece 5 is fixed by a weight piece presser 9 provided on the vertical frame 3. The counterweight pieces 5 and 6 include two types of weight pieces: at least one standard counterweight piece 5 and at least one fixing counterweight piece 6.

  FIG. 4 is a plan view showing the configuration of the standard counterweight piece 5. As shown in FIG. 4, the standard counterweight piece 5 is a substantially flat weight having engaging portions 51 that fit into one vertical frame 3 on both sides.

  FIG. 3 is a plan view showing a configuration of the fixing counterweight piece 6. As shown in FIG. 3, the fixing counterweight piece 6 has basically the same configuration as the standard counterweight piece 5 of FIG. 4 in terms of shape, size, etc., but on both sides of the engaging portion 61, a vertical frame is provided. A protrusion (projection) 62 that fits into the three cutout holes 10 is formed. Further, the end portion of the engaging portion 61 is formed on the slope 63 so that the operator can easily balance the weight pieces and mount them on the weight frame.

  Regarding the mounting of the counterweight pieces 5, 6, first, the standard counterweight pieces 5 are sequentially mounted on the lower frame 2 as shown in FIG. 1. When the standard counterweight piece 5 reaches the notch portion of the vertical frame 3, the protrusion 62 of the fixing counterweight piece 6 is fitted and fixed to the notch portion 10 of the vertical frame 3. A standard counterweight piece 5 is mounted on the counterweight piece 6 for fixing. That is, the standard weight piece 5 is mounted at a position where the notch of the vertical frame 3 is not formed, and the protruding portion of the fixing weight piece 6 is provided at a position where the notch of the vertical frame 3 is formed. 62 is mounted in the notch hole 10. In the present embodiment, the cutout hole 10 is formed vertically in the longitudinal direction of the vertical frame 3, so that when the projection 62 of the fixing weight piece 6 is fitted into the cutout hole 10, the projection 62. The margin part which moves can be made up and down, and the weight piece 6 for fixation can be mounted easily. In the present embodiment, one notch hole 10 is formed in one vertical frame 3, but two or more may be formed. When a plurality of cutout holes 10 are formed in the vertical frame 3, it is sufficient that the fixing counterweight piece 6 is fixed to at least one cutout hole 10, and the standard counterweight is provided at the position where the cutout hole 10 is formed. The piece 5 may be mounted.

  As shown in FIG. 2, when rolling occurs in the counterweight due to an earthquake or the like, the standard counterweight piece 5 causes the vertical frame 3 to be deformed (bends left and right). Since the protruding portion 62 is fitted into 10 and the fixing counterweight piece 6 is fixed, both the left and right vertical frames 3 are deformed in the same direction. Therefore, since the distance between the left and right vertical frames is kept constant in the longitudinal direction of the vertical frame 3, the standard counterweight piece 5 is prevented from falling without causing the counterweight frame 1 to open. be able to.

  Further, according to the counterweight of the present embodiment, it is possible to prevent the counterweight pieces 5 and 6 from falling without attaching a reinforcing member for connecting the left and right vertical frames 3. Thus, it is possible to mount the counterweight pieces 5 and 6 at the locations where the reinforcing members for connecting the frames are provided, and the efficiency of the mounting space can be improved.

  In addition, since it is possible to mount the counterweight pieces 5 and 6 in a portion where a reinforcing member for connecting the left and right vertical frames is provided, no useless space is created in the counterweight frame 1. It can be mounted efficiently. Therefore, in the counterweight of the present embodiment, the weight of the counterweight is increased even with the vertical frame 3 having the same height as that of the conventional counterweight frame. The scope of application can be expanded. As a result, at the production site of the factory, the types of counterweight frames 1 are reduced, which is effective in improving work efficiency and reducing the price.

  Further, the counterweight frame 1 of the present embodiment has a configuration in which a counterweight frame having a notch hole 10 is formed by cutting and bending a face plate, and a protrusion 62 is formed on the fixing weight piece 6. Unlike the configuration in which other parts such as bolts are used as a member for preventing fall on the counterweight frame formed of the steel plate, a load is applied to the member for preventing fall comprised of bolts, and the member breaks. Can be prevented. Also, with this configuration, it is possible to realize a weight drop prevention structure with a reduced number of parts.

1 Counterweight frame 2 Lower frame 3 Vertical frame 4 Upper frame 5 Standard counterweight piece 6 Fixed counterweight piece 10 Notch hole 62 Projection

Claims (3)

A plurality of counterweight pieces are held in a counterweight frame composed of a pair of vertical frames, an upper frame that connects the upper ends of the vertical frames, and a lower frame that connects the lower ends of the vertical frames. In the balance weight of the elevator,
The vertical frame, the upper frame and the lower frame are formed by cutting and bending a face plate, and the vertical frame is formed with a notch for fixing the counterweight piece ,
The notch hole is formed vertically in the longitudinal direction of the vertical frame,
An elevator counterweight , wherein at least one of the counterweight pieces is a fixed counterweight piece provided with a protrusion that fits into the notch hole . The counterweight according to claim 1 , wherein the counterweight piece is composed of at least one fixing counterweight piece and at least one standard counterweight piece on which the protrusion is not formed. The standard counterweight piece is held at a position where the cutout hole is not formed in the frame, and the standard counterweight piece is held at a position where the cutout hole is formed in the vertical frame. Or the balance weight for fixing is fixed by fitting the projection into the notch hole. In an elevator provided with a hoistway, a car and a counterweight that are provided in the hoistway and are suspended in a suspending manner from each other,
The elevator apparatus according to claim 1, wherein the counterweight is a counterweight according to claim 1 or 2 .

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