JP2006290496A - Balance weight device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a balance weight device for an elevator, easily reducing its size, even in the balance weight device provided with wheel for a balance weight device around which a main rope of the elevator is wound. <P>SOLUTION: The balance weight device comprises: a balance weight frame 1 constituted of a pair of vertical frames 1a disposed on both sides, a lower frame 1b connecting lower end parts of the vertical frames, and an upper frame 1c connecting upper end parts of the vertical frames; the balance weight wheel 2 rotatably disposed to the upper frame of the balance weight frame; and a balance weight 3 which is placed on the lower frame of the balance weight frame, and a part of which is disposed above the lower end part of the balance weight wheel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a counterweight device that is suspended in the shape of a fishing bottle that moves up and down in an elevator hoistway.

  In recent years, space-saving of elevator devices has been achieved, as represented by machine room-less elevator devices that do not require installation of machine rooms by placing elevator equipment that has been installed in the machine room above the hoistway in the hoistway. Is progressing. The space saving of such an elevator apparatus is realized by arranging the devices or reducing the size of each device itself. In addition, as a conventional counterweight device corresponding to the space saving of the elevator device, the lower frame of the counterweight frame is configured by a pair of L-shaped members facing each other, so that the conventional counterweight has not been loaded. There has been proposed a structure in which a counterweight can be loaded on the inner part of the frame (see, for example, Patent Document 1).

JP 2001-122560 A

  The balance weight device for an elevator described in Patent Document 1 has been reduced in size by reducing the height of the balance weight device by loading the balance weight on the inner portion of the lower frame where the balance weight has not been loaded. Is. However, when the counterweight suspension is installed on the upper portion of the counterweight device, the loaded counterweight is placed below the counterweight suspension so that it does not interfere with the rotation of the counterweight suspension. The Accordingly, there is a limit to downsizing the upper portion of the counterweight device, in particular, reducing the height of the counterweight device, which has been a factor that hinders the space saving of the hoistway. Further, the counterweight device is provided with a detent device that prevents the main rope wound around the leash groove on the outer circumferential surface of the counterweight suspension wheel from being removed from the leash groove when the counterweight device is raised or lowered. For this reason, the counterweight device also requires an installation space for the above-described detachment preventing device, which causes the counterweight to become large.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator balance weight device that can be easily miniaturized even in the case of having a balance weight suspension wheel. is there.

  An elevator counterweight device according to the present invention includes a pair of vertical frames arranged on both sides, a lower frame that connects the lower ends of the vertical frames, and an upper frame that connects the upper ends of the vertical frames. A frame, a balance weight suspension wheel rotatably provided on the upper frame of the balance weight frame, and a lower frame of the balance weight frame, a part of which is disposed above the lower end of the balance weight suspension wheel. Equipped with a counterweight.

  The present invention relates to a counterweight frame composed of a pair of vertical frames arranged on both sides, a lower frame connecting the lower ends of the vertical frames, and an upper frame connecting the upper ends of the vertical frames, and the counterweight frame. A counterweight suspension wheel rotatably provided on the upper frame, and a counterweight mounted on the lower frame of the counterweight frame, a part of which is disposed above the lower end of the counterweight suspension wheel. By adopting the configuration, it is possible to easily reduce the size of a vehicle equipped with a counterweight suspension wheel.

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings. In addition, in each figure, the same code | symbol is attached | subjected to the part which is the same or it corresponds, The duplication description is simplified or abbreviate | omitted suitably.

Embodiment 1 FIG.
1 is a front view of an elevator balancing weight device according to Embodiment 1 of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a front view of an essential part thereof. In FIG. 1 to FIG. 3, a balance weight device is suspended from an elevator car (not shown) by a main rope (not shown) in a fishing bottle manner, and the balance weight device moves up and down in the hoistway in the reverse direction. The main weight wraps around a balance weight frame 1 that supports the weight of the entire balance weight device, and a rope that is pivotally provided on the upper portion of the balance weight frame 1 and is formed in an endless shape on the outer peripheral surface thereof. The counterweight suspension wheel 2, the counterweight frame 1 supported by the counterweight frame 1, and the counterweight 3 adjusted so that the total weight of the counterweight device has a predetermined weight, and the upper and lower ends of the counterweight frame 1 By engaging with a pair of counterweight guide rails (not shown) provided in the hoistway so as to face each other on both sides of the counterweight device, the counterweight device can be moved in the horizontal direction. Limit and elevate And a guide to guide shoe 4 which the.

  The counterweight frame 1 has a substantially square annular shape as a whole, is bent so that the cross section is substantially U-shaped, and has both sides with a predetermined interval so that the openings face each other. A pair of vertical frames 1a arranged substantially perpendicular to each other, and each end is arranged in a U-shaped portion at the lower end of each vertical frame 1a and fastened and fixed to each vertical frame 1a with a bolt. A lower frame 1b that connects the lower ends of the frame 1a, and each end is fastened and fixed by bolts to one side and the other side of the upper end of the vertical frame 1a, so that both vertical frames 1a are sandwiched therebetween. A pair of upper frames 1c are provided to connect the upper ends of the vertical frames 1a.

  A support shaft 2a having a columnar shape is fixed to the upper frame 1c over the central portion of each upper frame 1c, and the balance weight suspension wheel 2 having a predetermined diameter rotates on the support shaft 2a. It is provided freely. Further, the guide shoe 4 is provided on both the lower end portions of the lower frame 1b and the upper end portions of the upper frame 1c via attachment brackets 5. The guide shoe 4 has a substantially U-shaped cross section, and is arranged so that its opening faces outward.

  The weight of the counterweight 3 is adjusted so that the weight of the entire counterweight device is substantially equal to the weight of the entire car when half the passengers are on the car. Here, the counterweight 3 has a plurality of weights 3a having a predetermined weight placed on the lower frame 1b, and placed on the weight 3a and has a weight smaller than that of the weight 3a. A plurality of first adjustment weights 3b for finely adjusting the weight of the entire counterweight device, and placed on the first adjustment weight 3b, and having a weight smaller than the adjustment weight 3a, like the first adjustment weight 3b. In addition to finely adjusting the weight of the entire counterweight device, a plurality of second weights arranged on both sides of the counterweight suspension vehicle 2 with a predetermined gap so as not to interfere with the rotation of the counterweight suspension vehicle 2. It is comprised from the 2 adjustment weight 3c.

  The adjusting weight 3a and the first adjusting weight 3b are provided with convex portions protruding outward at both ends thereof, and the convex portion provided at one end portion is within the U-shaped portion of the vertical frame 1a on one side, The convex portion provided at the other end is provided between the vertical frames 1a so that the convex portion is disposed in the U-shaped portion of the vertical frame 1a on the other side. Further, the adjusting weight 3a and the first adjusting weight 3b are provided so as to be positioned below the lower end portion of the counterweight suspension wheel 2, and when the counterweight suspension wheel 2 rotates, the counterweight suspension wheel is provided. 2 and the main rope wound around the suspension wheel 2 for the counterweight. The first counterweight is composed of the adjusting weight 3a and the first adjusting weight 3b.

  On the other hand, the second adjustment weight 3c (second counterweight) disposed on both sides of the suspension weight suspension wheel 2 has one end portion disposed in the U-shaped portion of each vertical frame 1a and the other end portion is The balance weight suspension wheel 2 is disposed so as to have a predetermined slight gap from the main rope wound around the rope on the outer peripheral surface of the balance weight suspension wheel 2. FIG. 4 is a side view of the second adjustment weight 3c in the first embodiment of the present invention. 1 to 4, the gap formed between the other end of the second adjustment weight 3c and the main rope wound around the counterweight suspension wheel 2 has a substantially constant width at any height. It is comprised so that it may become. That is, the length of the second adjustment weight 3c varies depending on the installation height, and the other end portion is stepped along the main rope wound around the leash groove on the outer peripheral surface of the counterweight suspension wheel 2. The support shaft 2a is mounted at a height of approximately the same height or higher. A through hole is formed at one end of each second adjustment weight 3c, and the position of the second adjustment weight 3c is fixed by inserting a through shaft into the through hole.

  By having such a configuration, even if the main rope wound around the rope groove on the outer peripheral surface of the counterweight suspension wheel 2 is likely to come off from the rope groove for some reason, it contacts the other end portion of the second adjustment weight 3c. By doing so, it is possible to prevent the main rope from coming off from the rope groove of the counterweight suspension wheel 2. That is, the second adjustment weight 3c is arranged with a predetermined gap from the outer peripheral surface of the counterweight suspension wheel 2, so that the main rope wound around the ropes on the outer peripheral surface of the counterweight suspension wheel 2 is removed. It also has a stop function. In order to prevent an accident in which the main rope is damaged when the main rope comes into contact with the other end of the second adjustment weight 3c, the counterweight suspension wheel 2 is provided at the other end of the second adjustment weight 3c. A predetermined R chamfering process is applied to the end portion close to the outer peripheral surface in the width direction of the counterweight suspension wheel 2.

  According to the first embodiment of the present invention, part of the counterweight 3 placed in the counterweight frame 1 is disposed on both sides of the counterweight suspension wheel 2, that is, the second adjustment weight 3c is provided. Compared with the conventional counterweight device in which all the counterweights 3 are disposed below the lower end portion of the counterweight suspension wheel 2 because the counterweight suspension wheel 2 is disposed above the lower end portion of the counterweight suspension wheel 2. Thus, the height of the counterweight device can be reduced. In addition, since the second adjustment weight 3c has a function of preventing the main rope from being wound around the rope groove on the outer peripheral surface of the counterweight suspension wheel 2, the anti-separation device that has been conventionally installed as a separate device becomes unnecessary. Further, the counterweight device can be reduced in size.

Embodiment 2. FIG.
FIG. 5 is a front view of an essential part of an elevator balancing weight device according to Embodiment 2 of the present invention, and FIG. 6 is a side view of a second adjustment weight according to Embodiment 2 of the present invention. 5 and 6, the other end of the second adjustment weight 3d (second counterweight) disposed on both sides of the counterweight suspension wheel 2 is connected to the end portion close to the outer peripheral surface of the counterweight suspension wheel 2. A predetermined C chamfering process is performed over the width direction of the suspension weight suspension wheel 2. By having such a configuration, the second adjustment weight 3d also serves as a main rope detachment preventing function for the main rope wound around the rope groove on the outer peripheral surface of the counterweight suspension wheel 2, and the main rope is in addition to the second adjustment weight 3d. Even when it comes into contact with the end portion, it is possible to reliably prevent an accident that damages the main rope. The rest of the configuration and effects are the same as those of the first embodiment.

1 is a front view of an elevator balancing weight device according to Embodiment 1 of the present invention. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an elevator balancing weight device according to Embodiment 1 of the present invention. It is a principal part front view of the balance weight apparatus of the elevator in Embodiment 1 of this invention. It is a side view of the 2nd adjustment weight in Embodiment 1 of this invention. It is a principal part front view of the balance weight apparatus of the elevator in Embodiment 2 of this invention. It is a side view of the 2nd adjustment weight in Embodiment 2 of this invention.

Explanation of symbols

1 Balance Weight Frame 1a Vertical Frame 1b Lower Frame 1c Upper Frame 2 Balance Weight Suspension Wheel 2a Support Shaft 3 Balance Weight 3a Adjustable Weight 3b First Adjustment Weight 3c, 3d Second Adjustment Weight 4 Guide Shoe 5 Mounting Metal

Claims (4)

  A counterweight frame composed of a pair of vertical frames arranged on both sides, a lower frame connecting the lower ends of the vertical frames, and an upper frame connecting the upper ends of the vertical frames, and the upper of the counterweight frame A counterweight suspension wheel provided rotatably on the frame, and a counterweight placed on the lower frame of the counterweight frame, a part of which is disposed above the lower end of the counterweight suspension wheel. Elevator balancing weight device characterized by comprising.   The counterweight is a first counterweight disposed below the counterweight suspension wheel, and the counterweight is placed on the first counterweight and positioned above the lower end of the counterweight suspension wheel. The elevator counterweight according to claim 1, further comprising second counterweights disposed on both sides of the suspension vehicle.   The second counterweight has a function to prevent the main rope from being wound around the outer peripheral surface of the counterweight suspension wheel by being arranged with a predetermined gap from the outer peripheral surface of the counterweight suspension wheel. The elevator counterweight according to claim 2.   4. The second counterweight is characterized in that C-chamfering or R-chamfering is performed on an end portion close to the outer peripheral surface of the counterweight suspension wheel in the width direction of the counterweight suspension wheel. 5. Elevator balance weight device.

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