JPH04112178A - Elevator device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an elevator system equipped with a balance adjustment mechanism that adjusts the balance of a car suspended in a hoistway of a building.

(Prior Art) A support structure for an elevator car will be described with reference to FIGS. 3 and 4. Fig. 3 is a side view of car a, and Fig. 4 is a view of car a from the bottom. Reference numeral 1 is a horizontally arranged lower beam, and a floor support frame is placed on top of this lower beam 1. 2 is attached, and a car compartment 4 is supported on the floor support frame 2 via a vibration isolating rubber 3. Vertical frames 5 . An upper beam 6 is installed horizontally. A lobe 7 is attached to the intermediate portion of the upper beam 6, and the entire car a is supported in a suspended state within the hoistway 8 of the building via the lobe 7.

In the hoistway 8 of the building, a pair of guide rails 9.9 for guiding the travel of the car a are vertically provided facing both sides of the car room 4. Roller guides 10 that engage with the guide rails 9 are provided at both ends of the lower beam 1 and the upper beam 6 of the car a. Each of these roller guides 10... is composed of three rotatable rollers 11..., and these rollers 11... The car a is moved up and down along the guide rail 9.9 via these rollers 11.

Here, if the position of the entire center of gravity of the car a deviates from the position where it is suspended by the rope 7, an unbalanced load is generated on the car a, and a force that tends to tilt the car a is exerted. Such a load is borne by the roller guides 10 engaged with the guide rails 9, 9, and this causes an unbalance in the engagement state between each roller guide 10... and the guide rails 9, 9. This unbalance causes small vibrations to be applied to the car A while the car A is running, which impairs the ride comfort.

For this reason, the elevator car a is generally provided with a balance adjustment mechanism.

A conventional balance adjustment mechanism of this type is provided on the lower surface of the car a, and its specific configuration is as follows.
That is, first, second, and third weight adjustment portions 12a are provided at three locations on the lower surface of the lower beam 1.

12b and 12c are provided, and these weight adjustment parts 12
A, 12b, 12c are each a weight holder 13 that is long in one direction, and a plurality of dumbbell-shaped weights 14 that are detachable and slidable in the longitudinal direction thereof.
It becomes attached. The first weight adjustment section 12a is arranged along the left and right direction on the rear side of the car compartment 4.
Further, the second and third weight adjustment sections 12b and 12c are respectively provided along the front and back direction on both sides of the front side of the car compartment 4. Weight 14...
By adjusting the position and number of ・, the balance of car a is achieved.

Describing the work procedure for balancing the car a, first loosen the springs built into the roller guides 10...
0... is disengaged and the car a moves to the guide rails 9, 9.
In this state, place a dummy weight at an appropriate position on top of the car A, and get an idea of how much weight should be added to which position. . After that, each weight adjustment section 12a is adjusted under the car a according to the register.

The number and position of weights 14 . . . of 12b and 12c are adjusted to balance the car a.

(Problem to be solved by the invention) However, in order to avoid being affected by the dynamic balance caused by the tail cord and convene lobes, this kind of work must be done by first getting an idea of the balance on the intermediate floor of the building, and then moving the car a.
to the bit, and the worker must get down to the bit and adjust the number and position of the weights 14... of each weight adjustment section 12a, 12b, 12c to balance the car a. Therefore, the entire work is large-scale and takes a lot of time and effort.

Elevators equipped with such balance weights operate at high speeds, so
In many cases, the depth of the bit exceeds 3 m, which necessitates setting up a scaffold around the bit, which makes the work more troublesome and poses the danger of falling from the scaffolding during work. .

This invention was made with attention to these points, and its purpose is to provide an elevator system that allows the adjustment of the balance of a car to be easily, efficiently, and safely carried out. .

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a balance adjustment mechanism for adjusting the balance of the car on the upper surface of the car. be.

(Function) With this configuration, the balance of car a can be adjusted on top of the car, so a series of operations can be carried out while the car is supported on the intermediate floor of the building without lowering it to the bit. This improves work efficiency and eliminates the need for troublesome work such as setting up scaffolding around the bit.

(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. Note that parts corresponding to the conventional configuration shown in FIGS. 3 and 4 are denoted by the same reference numerals, and the explanation thereof will be omitted.

Figure 1 is a front view of car a, Figure 2 is car a.
is a top view, in which first and second weight adjustment parts 15a and 15b are provided at both ends of the upper beam 6 along the front-rear direction of the car a. These weight adjustment parts 15a and 15b are each made of, for example, a pair of channel steel 1.
A weight holder 17 which is long in one direction and is formed by arranging 6.16 opposite to each other, and a weight holder 17 which is removable through the gap between the opposing channel steels 16 and 1.6 of this weight holder 17 and which is attached along the longitudinal direction of the weight holder 17. It is composed of a plurality of dumbbell-shaped weights 18 that are slidably attached to the body.

The weights 18... are arranged so as to overlap each other, and the weights 18... are arranged on one side and the other side of the arrangement.
A presser 19.19 is provided to prevent movement of the. Also, between the rear end of one weight holder 17 arranged in parallel and the rear end of the other weight holder 17, a retaining rod 20 is installed to prevent the weights 18 from coming off from the rear end. has been done.

When adjusting the balance of the car a, loosen the springs built into the roller guides 10, disengage the guide rails 9, 9, and the roller guides 10, and then adjust the balance of the car a. The weight holders 17. of each weight adjusting section 15a, 15b are kept completely free from the guide rail 9.9, and in this state, the weight holders 17.
The weights 18... are attached and detached from the weights 17 to increase or decrease their number, and the left and right balance of the car a is adjusted by such operations. Then, the weights 18... are slid in the longitudinal direction with respect to the weight holders 17, 17 of each weight adjusting section 15a, 15b to adjust the front-rear balance of the car a.

Then, the worker gets down from the top of the car a, checks whether the overall balance of the car a is appropriate, and then presses the presser 19.
19, each weight 18... is connected to the weight holder 17.
17, thereby completing the balance adjustment work.

This type of work can be done on car a, so
It is possible to carry out a series of operations while supporting the bit on the intermediate floor of the building without lowering it to the bit, improving work efficiency and eliminating the need for troublesome work such as setting up scaffolding on the bit. There is no risk of workers falling.

By the way, since various other works are performed on the car a, a safety handrail is generally provided in the form of a fence on the top surface of the car room 4, but in this embodiment, the weight holders 17, 17 and Since a U-shaped fence is formed on the top surface of the car room 4 by the retaining rod 20, various operations can be carried out safely within the cage, and a separate safety handrail can therefore be omitted to reduce costs. There are advantages that can be achieved.

[Effects of the Invention] As explained above, according to the present invention, the work of adjusting the balance of a car can be carried out in a series of operations while the car is supported on an intermediate floor of the building without lowering it to the pit. ,
Therefore, work efficiency is improved, and there is no need for troublesome work such as setting up scaffolding in the pit, which has the advantage of allowing work to be carried out safely.

[Brief explanation of drawings]

Fig. 1 is a front view of a car of an elevator system according to an embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view of a car of a conventional elevator system, and Fig. 4 is a bottom view of the car. It is a diagram. a... Cars 15a, 15b, 15cm... Weight adjustment section 18...
・Patent attorney Takehiko Suzue, Applicant's representative

Claims (1)

[Claims] An elevator device characterized in that a balance adjustment mechanism for adjusting the balance of the car by attaching/detaching weights or sliding the car is provided on the upper surface of the car.