JP2001151432A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device easily mounted on a shock absorbing means for each preventing means in a short time. SOLUTION: The balancing weight preventing means 16 is mounted at the top of tag balancing weight shock absorbing means 15 while being slid in horizontal during maintenance for preventing the move-down of a balancing weight at a position higher than a move-down position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for an elevator apparatus having a car and a counterweight connected to each other by a main rope.

[0002]

2. Description of the Related Art FIG. 4 is a side view of a hoistway showing a conventional elevator apparatus. In the figure, 1 is the elevator hoistway, 2 is the car, 3 is the counterweight, 4 is the floor of the top floor of the hoistway 1, and 5 is the floor of the lowest floor of the hoistway 1. The floor, 6 is a hoisting car, 7 is a rope (main rope) which suspends the weight 3 with the car 2 via the hoisting car 6, 8 is a maintenance person riding on the car, 9 is on the bottom of the hoistway 1. The counterweight shock absorber 10 provided and disposed opposite the counterweight 3 is a car buffer provided at the bottom of the hoistway 1 and disposed opposite the car 2.
Reference numeral 1 denotes a counterweight prevention device which is mounted on the top of the counterweight buffer 9 with a plurality of bolts 12 or the like during maintenance operation.

[0003] The counterweight shock absorber 9 is in a state of being fully compressed under the load of the counterweight 3. 13
Is attached to the top of the car shock absorber 10 with a plurality of bolts 12 or the like during maintenance operation by a car blocking device. The car shock absorber 10 does not receive the load of the car 2 but receives only the load of the car blocking device 13 and is in an extended state.

[0004] The counterweight prevention device 11 is used to move the lowering of the counterweight 3 above the counterweight buffer 9,
That is, it is blocked at a predetermined position above the normal lowering position. In addition, the prevention of the lowering of the counterweight 3 restricts the elevation of the car 2 at a predetermined position below the normal ascent position.

If the maintenance person 8 rides on the car during maintenance and keeps raising the car 2 by mistake, the maintenance person 8 may hit his head against the ceiling as shown by the broken line. In order to prevent this, when performing maintenance on the ceiling of the car 2 at the time of maintenance, first, the counterweight prevention device 11 is attached to the top of the counterweight buffer 9, and the counterweight 3 is moved from the counterweight buffer 9. The car 2 is prevented from physically moving further upward by first hitting the counterweight prevention device 11.

At this time, the dimensions of the counterweight preventing device 11 are set so that the maintenance staff 8 does not hit the head even if the maintenance staff 8 is on the car. It is safe without hitting your head on the ceiling. Also, even when the maintenance person 14 is in the pit, the car blocking device 13 moves the car 2 down to a position above the car shock absorber 10, that is,
Since the vehicle is blocked at a predetermined position above the normal lowering position, the maintenance person 14 does not collide with the car 2 and is safe.

[0007]

The conventional elevator apparatus is constructed as described above, and each of the lowering prevention devices is attached to each of the shock absorbers by tightening a plurality of bolts. For this reason, there have been problems that much work time is required for mounting position alignment, and that much work time is required when bolts are tightened.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an elevator apparatus in which each blocking means can be easily attached to each buffering means and has a short installation time.

[0009]

An elevator apparatus according to the present invention is provided at a bottom of the hoistway with a car and a counterweight which are connected to each other by a main rope and move up and down the hoistway in opposite directions. The counterweight is disposed so as to face the counterweight, and is mounted so as to be fitted to the counterweight buffer during normal operation by sliding the counterweight from the horizontal direction on the top of the counterweight buffer during maintenance operation. A counterweight preventing means for preventing the lowering of the counterweight from exceeding a predetermined position is provided.

A car and a counterweight, which are connected to each other by a main rope and move up and down the hoistway in opposite directions,
Provided at the bottom of the hoistway, the car buffer means during normal operation arranged opposite to the car, and slidably fitted horizontally to the top of the car buffer means during maintenance operation. And a car blocking means for preventing the lowering of the car from lowering beyond a predetermined position.

Further, after fitting the bottom of each blocking means having a C-shaped or U-shaped cross section to the top of each buffering means having a flange shape, a plurality of blocking means formed on the bottom of each of the blocking means are formed. A bar-shaped stopper is inserted into the opening of the buffer means, and the stopper is locked to the top of the buffer means.

A car and a counterweight, which are connected to each other by a main rope and move up and down the hoistway in opposite directions,
The counterweight is provided at the bottom of the hoistway and is opposed to the counterweight, and covers the entire counterweight buffer during normal operation, and covers the entire counterweight buffer during maintenance operation. And a counterweight preventing means for preventing the lowering of the moving member from lowering beyond a predetermined position.

A car and a counterweight which are connected to each other by a main rope to move up and down the hoistway in directions opposite to each other;
It is provided at the bottom of the hoistway, and covers the car buffering means during normal operation and the entire car buffering means during maintenance operation, which is arranged opposite to the car, and the lowering of the car exceeds a predetermined position. And a car blocking means for preventing the vehicle from descending.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a configuration diagram showing a safety device in an elevator apparatus according to Embodiment 1 of the present invention, where (a) is a front view and (b) is a side view. FIG.
In the safety device, the (car or counterweight) shock absorber 15 and the (car or counterweight) lowering prevention device 1
The lowering prevention device 16 is composed of a car, a plate 16a for contacting the lower surface of the counterweight, a raising pipe 16b, and a mounting plate 16c for mounting to the shock absorber 15. 17 is
It is a bolt for positioning and coming off.

FIG. 2 is a perspective view showing a main part of the descent prevention device 16 of the safety device shown in FIG. 1. A mounting plate 16c is formed in a C-shape so as to be fitted with a flange-shaped shock absorber top 15a. Have been. 16d is a positioning and retaining bolt 1
Reference numeral 7 denotes an insertion hole to be mounted.

At the time of inspection and installation of the elevator, the section C of the lowering prevention device 16 is required for work in the pit and on the car.
The fitting portion in the shape of a letter is aligned with the top 15a of the shock absorber, and is slid horizontally for mounting, and a bolt 17 for positioning and retaining is mounted in the insertion hole 16d. The attached bolt 17 is locked on the outside of the shock absorber top 15a, and the descent prevention device 16 is attached to the shock absorber 15. The fitting portion of the descent prevention device 16 has a C-shaped cross section, but may have a U-shaped cross section.

Although the insertion holes for the positioning and retaining bolts 17 are formed in the upper part of the mounting plate 16c, they are formed in the side or lower part of the mounting plate, and the bolts 17 are mounted.
The outside of the shock absorber top 15a may be locked. In addition, although bolts are used for positioning and retaining, any pins or rods may be used. As a result, a safe space during the maintenance operation of the elevator is simply and reliably ensured.

Embodiment 2 FIG. FIG. 3 is a configuration diagram showing a safety device in an elevator apparatus according to Embodiment 2 of the present invention. The structure of the descent prevention device 18 is composed of a car, a plate 18a for the lower surface of the counterweight and a raising pipe 18b. In the figure, at the time of inspection and elevator installation, a shock absorber 15
The lowering prevention device 18 is placed over the shock absorber so as to cover the entire shock absorber. As a result, a safe space during the maintenance operation of the elevator is simply and reliably ensured.

[0019]

As described above, according to the present invention, a car and a counterweight, which are connected to each other by a main rope and move up and down the hoistway in opposite directions, are provided at the bottom of the hoistway to provide a counterweight. The counterweight is arranged so as to be opposed to the counterweight during normal operation, and the counterweight is attached to the top of the counterweight buffer during maintenance operation by sliding the counterweight from the horizontal direction to lower the counterweight. The provision of the counterweight preventing means for preventing the lowering from exceeding a predetermined position ensures the safety of the work on the car during the maintenance operation, and the mounting of the counterweight preventing means is not performed by tightening the bolt. Therefore, there is an effect that the mounting time is shortened and the device can be easily mounted.

A car and a counterweight, which are connected to each other by a main rope and move up and down the hoistway in opposite directions,
It is provided at the bottom of the hoistway, and is mounted so as to be fitted to the car buffer means during normal operation and slid from the horizontal direction at the top of the car buffer means during maintenance operation, which is arranged opposite to the car. By providing a car preventing means for preventing the car from lowering beyond a predetermined position, the safety of the operation in the pit during the maintenance operation is ensured, and the mounting of the car preventing means is tightened by tightening bolts. Since this is not performed, there is an effect that the mounting time is shortened and the device can be easily mounted.

After fitting the bottom of each blocking means having a C-shaped or U-shaped cross section to the top of each buffering means formed in a flange shape, a plurality of blocking means formed on the bottom of each blocking means is formed. By inserting a bar-shaped stopper into the opening and locking the stopper to the top of the buffering means, positioning can be easily performed simply by inserting a rod-shaped object such as a pin into the plurality of openings.

A car and a counterweight, which are connected to each other by a main rope and move up and down the hoistway in directions opposite to each other,
It is provided at the bottom of the hoistway, and covers the entire counterweight buffer during normal operation and the entire counterweight buffer during maintenance operation, which is disposed opposite to the counterweight, and the lowering of the counterweight is predetermined. The balance weight preventing means for preventing the vehicle from descending beyond the position of the above-mentioned position ensures the safety of the work on the car during the maintenance operation, and the mounting of the balance weight preventing means is not performed by tightening the bolts. In addition, the mounting time can be shortened, the mounting can be easily performed, the cage preventing means has a simple configuration, and cost reduction and weight reduction can be realized.

A car and a counterweight, which are connected to each other by a main rope and move up and down the hoistway in directions opposite to each other,
It is provided at the bottom of the hoistway and covers the entire car buffering means during normal operation and the car buffering means arranged opposite to the car during normal operation, so that the lowering of the car does not descend beyond a predetermined position. The safety of the pit work during maintenance operation is secured by the provision of the car blocking means, and the car blocking means is not mounted by tightening bolts, shortening the mounting time and installing easily As a result, the cage preventing means has a simple configuration, and cost reduction and weight reduction can be realized.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a safety device in an elevator apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view showing a main configuration of a descent prevention device of the safety device of FIG. 1;

FIG. 3 is a configuration diagram showing a safety device in an elevator apparatus according to Embodiment 2 of the present invention.

FIG. 4 is a configuration diagram showing a conventional elevator device.

[Explanation of symbols]

15 shock absorber, 16 descent prevention device, 16a bottom contact plate, 16b raising pipe, 16c mounting plate, 17
Bolts for positioning and retaining.

Claims (5)

[Claims] 1. A car and a counterweight, which are interconnected by a main rope and move up and down the hoistway in mutually opposite directions, and are provided at the bottom of the hoistway and are arranged opposite to the counterweight. A counterweight buffer for normal operation,
A counterweight preventing means attached to the top of the counterweight buffer means so as to be slidably fitted from the horizontal direction during the maintenance operation to prevent the lowering of the counterweight from lowering beyond a predetermined position; An elevator device comprising: 2. A car and a counterweight which are connected to each other by a main rope and move up and down the hoistway in opposite directions, and a normal operation provided at the bottom of the hoistway and opposed to the car. A car shock absorbing means, and a car which is mounted so as to be fitted to the top of the car shock absorbing means by sliding in a horizontal direction during a maintenance operation so as to prevent the car from descending beyond a predetermined position. An elevator device comprising a blocking means. 3. After fitting the bottom of each blocking means having a C-shaped or U-shaped cross section to the top of each buffering means formed in a flange shape, a plurality of blocking means are formed on the bottom of each of the blocking means. The elevator apparatus according to claim 1 or 2, wherein a bar-shaped stopper is inserted into the opening of (1), and the stopper is locked on the top of the buffer means. 4. A car and a counterweight which are connected to each other by a main rope to move up and down the hoistway in opposite directions, and are provided at the bottom of the hoistway and are arranged opposite to the counterweight. A counterweight buffer for normal operation,
An elevator apparatus comprising: a counterweight prevention unit that covers the entire counterweight buffer unit during a maintenance operation and that prevents the lowering of the counterweight from exceeding a predetermined position. 5. A car and a counterweight which are connected to each other by a main rope to ascend and descend the hoistway in opposite directions, and a normal operation provided at the bottom of the hoistway and opposed to the car. An elevator apparatus comprising: a car shock absorbing means at a time; and a car preventing means for covering the entire car shock absorbing means during a maintenance operation and preventing the car from lowering beyond a predetermined position. .