JP5354898B2 - Elevator counterweight - Google Patents

Abstract

The present invention provides an elevator counterweight which can reduce the cost through effectively using the space. According to the elevator counterweight (2) provided by the invention, an auxiliary counterweight (22) which is used for obtaining weight balancing with the elevator cage in a counterweight frame (21). In the counterweight of elevator, the counterweight frame (21) is loaded with a casting-made auxiliary counterweight (22a) and a steel-plate-made counterweight (22b) which have approximate same projection section. Not only can the required weight of counterweight (2) be obtained, but also the casting-made auxiliary counterweight (22a) with less specific weight and low cost can be furthest installed in the loadable volume of counterweight frame (21).

Description

  The present invention relates to a counterweight of an elevator in which subweights for balancing the weight of the car and the car are loaded on a counterweight frame.

  The elevator has a structure that balances the elevator that goes up and down the hoistway and the counterweight equivalent to the weight of this elevator, and the counterweight is a counterweight frame to which the rope is connected. The sub-weight is loaded on the counterweight frame. And as for a subweight, the thing made from a casting or a steel plate has become the mainstream. In recent years, due to the global rise in steel materials, the balance weight frame and the subweights loaded on it have become a significant part of the cost of elevators. It is one of the important elements from the viewpoint. Therefore, conventionally, the selection of the sub-weight is a casting sub-weight that has a small specific gravity but is advantageous in terms of cost in order to satisfy the weight required as a counter-weight within the loadable volume of the counter-weight frame, or has a large specific gravity but a high cost. One of the disadvantageous steel plate subweights was selected.

  However, for the conventional counterweight, either a cast subweight or a steel plate subweight is selected, and a cast subweight with a small specific gravity is filled to the full loadable volume of the counterweight frame. Even when loaded, steel plate subweights are often selected that do not reach the required weight as a counterweight and are disadvantageous in cost. In this case, not only will the cost increase, but the balance weight frame is loaded only with steel plate subweights with a high specific gravity, so the total volume of the subweight is relative to the loadable volume of the balance weight frame. There was also a problem in terms of effective use of space.

  The present invention has been made from the actual situation in the above-described prior art, and an object thereof is to provide a counterweight of an elevator capable of reducing the cost by efficient use of space.

In order to achieve the above object, the present invention provides a balance weight of an elevator in which a subweight for balancing the weight of a car and a weight is loaded on a weight frame, wherein the subweight is made of a casting having substantially the same projected cross section. Each of the subweight and the steel plate subweight are mixedly loaded, and the steel plate subweight is loaded below the counterweight frame and the casting subweight is loaded above the counterweight frame, respectively. The steel plate subweight has a specific gravity greater than that of the casting subweight and has a small height dimension. The weight and height of the casting subweight, and the weight of the steel plate subweight. And the number of sub-weights made of the casting that saturates the loadable volume of the counterweight frame based on the height dimension. Becomes maximum the cast iron of the sub-weight and the steel sub-weight number is characterized that you have been stacked on the attached fit weight frame.

In thus constituted present onset bright, by mixed to the weight frame counterweight castings made of sub weights and steel sub weights having substantially the same projected section, while satisfying the required weight as counterweight, A casting subweight having a small specific gravity within the loadable volume of the counterweight frame but advantageous in cost can be used as much as possible. As a result, the space can be used efficiently and the cost can be reduced. Also, if the weight of the car increases after the elevator installation due to additional equipment, etc., it is necessary to add a subweight to the counterweight in order to balance it. However, as described above, the casting sub-weight and the steel plate sub-weight are mixedly mounted so as to saturate the loadable volume of the counterweight frame, and the sub-weight cannot be simply added. Therefore, the casting-made subweight having a small specific gravity is removed, and a steel-made subweight corresponding to the sum of the weight of the removed casting-made subweight and the weight of the additional portion is loaded. Therefore, the work can be facilitated by installing the cast sub-weight having a small specific gravity on the sub-weight made of a steel plate having a large specific gravity.

  According to the present invention, the casting sub-weight and the steel plate sub-weight are mixedly mounted on the counterweight frame, and the specific weight is small within the loadable volume of the counterweight frame after satisfying the necessary weight as the counterweight. Costs can be reduced by using as much as possible a sub-weight made of a casting that is advantageous in terms of cost. Further, by installing a sub-weight made of a casting having a low specific gravity on a sub-weight made of a steel plate having a high specific gravity, it is possible to facilitate the additional work of the sub-weight.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of an elevator counterweight according to the present invention will be described with reference to the drawings.

  FIG. 1 is a front view showing an embodiment of an elevator counterweight according to the present invention, FIG. 2 is a front view showing a state in which subweights are loaded by a method different from FIG. 1, and FIG. FIG. 4 is a plan view of a casting subweight, FIG. 5 is a front view of the casting subweight, FIG. 6 is a side view of the casting subweight, and FIG. 7 is a steel plate. FIG. 8 is a front view of the sub-weight made of steel plate, FIG. 9 is a side view of the sub-weight made of steel plate, and FIG. 10 is a schematic configuration diagram of the elevator.

  As shown in FIG. 10, the lift elevator is connected to a lifting body for raising and lowering a hoistway, that is, a car 1 and a counterweight 2, one end connected to the upper part of the hoistway, and the other end to a counterweight 2. A rope 4 with which the car 1 is engaged via the pulley 3 and a hoisting machine 5 that winds the intermediate part of the rope 4 and applies a driving force to the rope 4 are provided at the intermediate part.

  The counterweight 2 is loaded on the counterweight frame 21 to which the rope 4 is connected, and the counterweight frame 21 so that the sum of the weight of the counterweight frame 21 corresponds to the weight of the car 1. It consists of a plurality of subweights 22. Further, a predetermined loadable volume is set in the counterweight frame 21, and a number of subweights 22 that can fit in the loadable volume are loaded so as to balance the weight with the car 1.

  As shown in FIGS. 1 and 2, the balance weight of the elevator according to the present embodiment includes a balance weight frame 21 in which a casting subweight 22a and a steel plate subweight 22b having substantially the same projected cross section are mixedly mounted. doing.

As shown in FIGS. 4 and 7, the casting subweight 22 a and the steel plate subweight 22 b have substantially the same projected cross section. However, as shown in FIGS. 5, 6, 8, and 9, the cast subweight 22 a has a smaller specific gravity and a larger height than the steel subweight 22 b. On the other hand, the steel-made subweight 22b has a larger specific gravity and a smaller height dimension than the cast-made subweight 22a. The casting subweight 22a is advantageous in terms of cost compared to the steel plate subweight 22b.

Therefore, based on each weight of the cast iron of the sub-weight 22a, and the height, the weight of the steel of the sub weight 22b, and a height dimension, saturated with stackable volume of the weight frame 21 counterweight and cost The number of casting subweights 22a and the number of steel plate subweights 22b are calculated so that the number of casting subweights advantageous to the maximum is maximized. For example, as shown in FIG. 1, under the weight frame 21 balance the number of steel sub weights 22b calculated, loading the number of castings made of the sub-weight 22a calculated equilibrium above the weight frame 21. Alternatively, as shown in FIG. 2, below the weight frame balance the number of castings made of the sub-weight 22a calculated, loading the number of steel sub weights 22b calculated equilibrium above the weight frame 21.

Therefore, in an elevator, a cooler having a weight of, for example, 50 kg may be mounted on the car 1 after installation of the elevator, often due to customer demand or the like. In this case, it is necessary to load the counterweight frame 21 in the same manner, that is, 50 kg of the subweight 22. However, in the counterweight 2 in the present embodiment as described above, it is mixed as cast iron sub weights 22a and steel sub weights 22b is saturated the stackable volume of the weight frame 21 counterweight, A subweight 22 cannot simply be added. Therefore, when described with to FIG. 1 as an example, first, the balance of the small castings made of sub weights 22a specific gravity stacked on top of the weight frame 21 removed predetermined number, then as shown in FIG. 3, the removed steel castings A sub-weight 22b made of steel plate corresponding to the sum of the weight of the sub-weight 22a and the additional weight, that is, 50 kg, is loaded. Thus, taking into account the addition of equipment to the car 1 after installation of the elevator, as a loading method of the subweight 22, as shown in FIG. 1, a subweight 22b made of a steel plate having a large specific gravity is balanced with a weight frame. below the 21, it is better to loading above the weight frame 21 equalizing the small castings made of sub weights 22a of gravity.

  According to the present embodiment, the casting sub-weight 22a and the steel plate sub-weight 22b are mixedly mounted on the counterweight frame 21 so that the weight required for the counterweight 2 is satisfied, and then the loadable volume of the counterweight frame 21 can be loaded. In particular, it is possible to reduce the cost by using as much as possible the casting-made subweight 22a having a small specific gravity but advantageous in terms of cost. Further, by installing the cast subweight 22a having a small specific gravity on the steel plate subweight 22b having a large specific gravity, the additional work of the subweight 22 can be facilitated.

It is a front view which shows one Embodiment of the counterweight of the elevator which concerns on this invention. It is a front view which shows the state which loaded the subweight by the method different from FIG. It is a front view which shows the state after the subweight additional work. It is a top view of a casting subweight. It is a front view of a casting subweight. It is a side view of a casting subweight. It is a top view of the subweight made from a steel plate. It is a front view of a steel plate subweight. It is a side view of the subweight made from a steel plate. It is a schematic block diagram of an elevator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car 2 Balance weight 3 Pulley 4 Rope 5 Hoisting machine 21 Balance weight frame 22 Sub weight 22a Cast sub weight 22b Steel sub weight

Claims (1)

In the weight balance of the elevator loaded on the weight frame, the subweight for balancing the weight of the car and the car
Each of the subweights includes a casting subweight and a steel plate subweight each having substantially the same projected cross section, and the steel plate subweight is formed below the counterweight frame. Subweights are respectively loaded above the counterweight frame ,
The steel plate subweight has a larger specific gravity than the casting subweight, and has a small height dimension,
Based on the weight and height dimensions of the casting subweight and the weight and height dimensions of the steel plate subweight, the loadable volume of the counterweight frame is saturated, and the casting subweight counterweight elevator number of the cast iron of the sub-weight and the steel sub-weight number is maximized is characterized that you have been stacked on the attached fit weight frame.

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