JPH0891743A - Counter weight device for elevator - Google Patents

Abstract

PURPOSE: To adjust the min. gap between a balance weight device and a buffer in a wide range, by installing a fixing member for fixing a rod-shaped member, in an engagement state with the rod-shaped member, at an adjustment enabled position on the bottom surface of a balance frame. CONSTITUTION: A balance 22 is accommodated into the balance frame 21 of a balance weight device. On the balance frame 21, a rope penetration hole is drilled in the vicinity of the center of the top surface, and a rope 13 penetrates through the inside of the balance frame 21. At the end part of the rope 13, each rod-shaped bolt 23 is installed. The rod-shaped bolt 23 projects outside from the hole drilled on the bottom surface of the balance frame 21, and the projection part is fixed on the bottom surface of the balance frame 21 by a nut 24. When the elevator is installed, the length of the rope 13 is determined in the state where the desired min. gap is realized. Through the lapse of time, the rope 13 extends, and the min. gap reduces, and then the projection quantity of the rod-shaped bolt 23 is increased by revolving the nut 24, and the optimum min. gap is secured again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator balance weight device, and more particularly to an elevator balance weight device having a fixing member for fixing the weight frame on the bottom surface of the weight frame for accommodating and holding the weight.

[0002]

2. Description of the Related Art A rope-type elevator is constructed by suspending a rope on a drive device provided at the upper end of a hoistway, suspending an elevator car at one end of the rope and a counterweight at the other end, and winding the rope by the drive device. , Raise and lower the elevator car and counterweight.

FIG. 7 is a schematic diagram showing the structure of such an elevator.

In the figure, an elevator car 11 is hung at one end of a rope 13 suspended by a drive device 14, and a counterweight device 12 is hung at the other end. Here, by winding the rope 13 by the drive device 14, the elevator car 11 and the counterweight device 12
The hoistway 10 is hoisted up and down.

On the floor of the pit 16 at the bottom of the hoistway, buffers 15 using springs are provided vertically below the elevator car 11 and the counterweight device 12, respectively.
The shock absorber 15 is a device that, even if the elevator car or the counterweight moves to the lowermost end of the hoistway for some reason, stops the shock while softening the impact in order to ensure the safety of passengers in the car. In such an elevator, safety standards are set for the distance between the shock absorber 15 and the counterweight device 12. According to the safety standard, when the elevator car 11 is stopped at the uppermost floor, the distance between the lower end of the counterweight device 12 and the upper end of the shock absorber 15 (the lower end of the counterweight when the elevator is stopped at the uppermost floor and the buffer) The upper end distance is hereinafter referred to as "minimum gap") must be within a predetermined range.

However, the rope 13 is the elevator car 11
Since the weight of the counterweight device 12 gradually increases with the passage of time, the height of the counterweight device 12 when the elevator car 11 is on the top floor gradually decreases, and the height of the counterweight device 12 and the shock absorber 15 increases. The minimum gap becomes smaller and smaller. Therefore, in order to satisfy the above-mentioned criteria, it is necessary to cut down the length of the rope 13.

However, this rope chopping work requires a great deal of time and labor, and the elevator operation stop time for this work is also long, which is a serious problem in elevator operation. In particular, the rope shows a considerable amount of growth called initial growth within a short period of about one year after installation of the elevator, so it is a great burden on the maintenance of the elevator to carry out rope truncation work several times in response to this initial growth. It was.

Therefore, in the prior art, a shock absorber cradle 12c is attached to the lower end of the counterweight device 12 in anticipation of the extension when the elevator is installed.
The length of the rope 13 was adjusted so that the minimum clearance between 2c and the shock absorber 15 satisfied the standard. That is, when the rope 13 extends and the minimum gap between the shock absorber pedestal 12c and the shock absorber 15 becomes small, the shock absorber pedestal 12c is removed so that the minimum clearance required between the counterweight device 12 and the shock absorber 15 is reduced. Secure.

FIG. 8 is a view for explaining the structure of a conventional counterweight having such a shock absorber cradle, and shows the state of the counterweight device 12 when the elevator car 11 is on the top floor.

In the figure, the counterweight device 12 accommodates a predetermined number of weights 12b in a weight frame 12a. Here, the weight frame 12a is slidable along a guide rail 100 provided in the vertical direction of the hoistway. The rope 13 is fixed to the top surface of the weight frame 12a by a nut 18 via a rope shackle 17.

On the other hand, the shock absorber cradle 12c is a weight frame 12
It is fixed to the lower end of a. In FIG. 7, the shock absorber cradle 12c
Are two pedestal members 12c connected by bolting
-1 and 12c-2. Cradle member 12c
-1 is fixed to the weight frame 12a by bolting. Although each pedestal member varies depending on the scale of the elevator, one having a vertical thickness of about 100 mm is usually used.

In the conventional device having such a structure, when the minimum gap L between the device and the shock absorber 15 does not satisfy the standard, the size of the minimum gap L is adjusted by removing the cradle members one by one. It was possible. In some cases, a method of adjusting the length of the rope 13 by retracting the rope shackle 17 into the weight frame 12 by rotating the nut 18 has been adopted.

[0013]

However, in the conventional counterweight device, it is necessary to remove the bolted pedestal member in the work of adjusting the minimum gap L, which is considerably less than the work of cutting the rope. It took time and effort. Also, since the cradle member is made of a material having a considerable weight such as iron,
In addition to the worker who removes the bolt, a worker who supports the pedestal member from below was required.

On the other hand, the rope shackle 17 has a weight frame 1
When the method of retracting to the 2a is adopted, since the retracting is limited to the top surface of the weight 12b at most, the adjustment width is small, and there is a problem that the retracting is impossible depending on the storage amount of the weight 12b.

Therefore, even if these conventional methods are used in combination, if the elongation of the rope is more than that, it is still necessary to cut down the rope.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a counterweight device which can easily adjust the above-mentioned minimum gap over a wide range.

[0017]

In order to solve the above problems, an elevator counterweight device of the present invention has a hole for accommodating and holding a weight, and a hole through which a rope penetrates on the top surface. The weight frame and a rod-shaped member whose one end is connected to the terminal end of the penetrating rope and whose other end reaches the bottom surface of the weight frame, and the rod-shaped member can be adjusted while engaging with the rod-shaped member at the bottom surface of the weight frame. And a fixing member for fixing the position.

The balance weight device for an elevator according to the present invention is a weight frame having a notch or a hole, and a weight frame having a hole for accommodating and holding the weight and allowing a rope to penetrate therethrough. A rod-shaped member, one end of which is connected to the terminal end of the rope that penetrates and the other end of which reaches the bottom of the weight frame through a notch or hole provided in the weight, and a rod-shaped member at the bottom of the weight frame. And a fixing member for fixing the rod-shaped member in an adjustable position in the engaged state.

Further, the elevator counterweight device of the present invention is characterized in that the rod-shaped member is a bolt member and the fixing member is a nut member.

[0020]

According to the present invention having the above construction, the weight is stored and held in the weight frame. Here, a hole is bored in the top surface of the weight frame, and the end of the rope penetrates into the frame through the hole. The terminating end of the penetrating rope is connected to a rod-shaped member, which extends downward to reach the bottom surface of the weight frame and is fixed to the bottom surface of the weight frame by a fixing member. At this time, since the fixed position can be adjusted, the rope length can be adjusted by changing the fixed position of the rod-shaped member.

Further, according to the present invention, since the weight is provided with the notch or the hole, the rod-shaped member can be passed through this portion.

Further, according to the present invention, since the rod-shaped member is a bolt and the fixing member is a nut, not only are these members engaged and fixed, but the fixing position can be easily adjusted.

[0023]

EXAMPLES Example 1. Here, an embodiment of an elevator balance weight device according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of a counterweight device according to a first embodiment, and FIG. 2 shows a state in which the counterweight device is cut along the chain line AA in FIG. 1 and the cut surface is viewed from above. ing.

In the figure, a predetermined number of weights 22 are stored in a weight frame 21 of the balance weight device. Here, the weight frame 21 is not shown near the center of the top surface.
One rope penetration hole is bored, and six ropes 13 penetrate into the weight frame 21. Long rod-shaped bolts 23 are attached to the ends of the six ropes 13, respectively. The rod-shaped bolt 23 extends downward and protrudes to the outside from six holes (not shown) formed in the bottom surface of the weight frame 21,
The weight frame 2 includes six nuts 24 having such protruding portions.
1 Fixed on the bottom. A cutout 25 is provided on the side surface of each weight 22 in order to secure a region through which the rod-shaped bolt 23 passes.

According to this embodiment having such a structure, first, at the time of installing the elevator, the rope 13 is fixed so that the lower end of the rod bolt 23 is slightly protruded from the nut 24 at a position where a desired minimum clearance is realized. Determine the length of.

When a certain amount of time has passed from this state and the minimum gap has become smaller, the nut 24 may be rotated to increase the amount of protrusion of the rod-shaped bolt 23, and the optimum minimum gap may be secured again. At this time, the shock absorber member is designed to allow the protruding portion of the rod-shaped bolt 23 to escape.

As described above, according to the present embodiment, the rod-shaped bolt may be projected in correspondence with the amount of extension of the rope 13, and the adjustment of the minimum gap can be realized by a very simple operation. On this occasion,
As is apparent from the figure, since the rod-shaped bolt 23 has a sufficient length, compared to the conventional method of removing the pedestal member or the method of pulling the rope shackle 17 at the top surface of the weight frame 21, the adjustment range is very wide. Can be realized.
As a result, the work of cutting the rope, which has been conventionally required, is unnecessary.

Further, according to this embodiment, since the weight of the entire apparatus is held by the bottom portion reinforced by the weight 22, the rope shackle 1 is attached to the top portion.
It is also advantageous in terms of strength as compared with a conventional device for fixing 7 in place.

Example 2. Here, another embodiment of the counterweight device of the present invention will be described. Since this embodiment has a configuration similar to that of the first embodiment, the members corresponding to the first embodiment will be described with the same reference numerals.

FIG. 3 is a schematic view of the counterweight device according to the second embodiment, and FIG. 4 shows a state in which the counterweight device is cut along the chain line AA in FIG. 3 and the cut surface is viewed from above. ing.

Also in this embodiment, a predetermined number of weights 22 are stored in the weight frame 21 of the counterweight device.
However, in this embodiment, the number of ropes 13 is three, and these ropes 13 penetrate into the weight frame 21 from three rope penetration holes (not shown) formed near the center of the top surface of the weight frame 21. Further, long rod-shaped bolts 23 are attached to the end portions of these three ropes 13, respectively. However, unlike the first embodiment, these rod-shaped bolts 23 have a weight frame 21.
The bottom of each of the long pipe-shaped nuts 30
Engage with. The lower ends 31 of the pipe-shaped nuts 30 support the bottom surface of the weight frame 21. Further, unlike the first embodiment, a hole 32 is formed in the center of each weight 22 in order to allow the pipe-shaped nut 30 to pass therethrough.

FIG. 5 is a detailed view of the structure from the end portion of the rope 13 to the pipe-shaped nut 30, and FIG. 6 is a sectional view of a part of the structure shown in FIG.

In the figure, a terminal socket 33 is attached to the end of the rope 13, and a rod-shaped bolt 23 is joined to the terminal socket 33. The rod-shaped bolt 23 has a screw structure that engages with the pipe-shaped nut 30, and a retaining member 34 is provided at the end of the rod-shaped bolt 23. on the other hand,
A hexagonal structure 35 is provided on the top of the pipe-shaped nut 30 so that a spanner can be hung on it. However,
Bar bolts 23 and pipe nuts 30 when not needed
A lock nut 36 covers the hexagonal structure 35 so that no rotation occurs between them.

The manner of adjusting the minimum gap in this configuration can be easily understood from the first embodiment. That is, when the elevator is installed, the length of the rope 13 is adjusted so that the lower end of the rod-shaped bolt 23 is fixed at a position where the lower end of the rod-shaped bolt 23 slightly enters the pipe-shaped nut 30 at a position where a desired minimum gap is realized.

When a certain amount of time elapses from this state and the minimum gap is reduced by extending the rope, a spanner is hung on the hexagonal structure 35 to rotate the pipe-shaped nut 30 to increase the pull-in amount of the rod-shaped bolt 23. The optimum minimum gap should be secured again. The ease of adjustment and the advantage of structural strength are the same as in Example 1.

According to the present embodiment, although the rod-shaped bolt 23 can be retracted in a smaller amount than in the first embodiment, the lower end of the retracted rod-shaped bolt 23 has the weight frame 21.
There is an advantage that it does not project downward from the bottom surface of the. Therefore, the design of the shock absorber member required in the first embodiment, that is, the design for releasing the protruding portion of the rod-shaped bolt 23 is not necessary.
For this reason, Example 1 is used for a high-rise building or the like in which the rope 13 has a large elongation, and Example 2 is used for a building with a certain elongation or less.
It is also possible to select and carry out.

[0038]

As described in detail above, according to the elevator counterweight device of the present invention, it is very easy to adjust the minimum clearance according to the extension of the rope 13. Also,
A wide range of adjustment is realized, eliminating the need for the conventional rope-cutting work. Further, since it has a structure in which the bottom portion holds the weight of the entire apparatus, it is advantageous in terms of strength as compared with the conventional apparatus fixed at the top portion.

Further, according to the present invention, in order to adjust the length of the rope, a notch or a hole is provided in the weight at a necessary place, so that a wider adjustment range can be realized.

Furthermore, according to the present invention, since the rod-shaped member and the fixing member are constituted by bolts and nuts, not only the reliability of fixing but also the ease of adjusting the fixing position are improved.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a counterweight device according to a first embodiment.

FIG. 2 is a perspective view of the counterweight device in FIG.
It is a figure which shows the mode which cut | disconnected by A and saw the cut surface from the top.

FIG. 3 is a schematic diagram of a counterweight device according to a second embodiment.

FIG. 4 is a perspective view of the counterweight device in FIG.
It is a figure which shows the mode which cut | disconnected by A and saw the cut surface from the top.

5 is a detailed view of the structure from the end of the rope 13 to the pipe-shaped nut 30. FIG.

6 is a cross-sectional view of a portion of the structure shown in FIG.

FIG. 7 is a schematic diagram showing a configuration of a rope-type elevator.

FIG. 8 is a diagram illustrating a configuration of a conventional counterweight having a shock absorber pedestal.

[Explanation of symbols]

 21 Weight Frame 22 Weight 23 Rod Bolt 24 Nut 25 Notch 30 Pipe Nut 31 Lower End of Pipe Nut 30 Hole 32 Hole 33 Terminal Socket 34 Lockout 35 Hexagonal Structure 36 Lock Nut

Claims (3)

[Claims] 1. A device for holding a weight, which is hung at one end of a rope and is used to balance the elevator car, and which has a hole for accommodating and holding the weight and for allowing the rope to penetrate into the top surface. A punched weight frame and a rod-shaped member, one end of which is connected to the end of the penetrating rope and the other end of which reaches the bottom of the weight frame, and a rod-shaped member that engages with the rod-shaped member at the bottom of the weight frame. A balance weight device for an elevator, comprising: a fixing member for fixing the vehicle to an adjustable position. 2. A device for holding a weight, which is suspended at one end of a rope, for balancing the elevator car, and a weight having a notch or a hole, and a weight for storing and holding the weight. A weight frame with a hole for the rope to penetrate in the top surface and one end of the weight frame connected to the end of the penetrating rope and the other end of the weight frame passing through a notch or hole in the weight. An equilibrium counterweight device for an elevator, comprising: a rod-shaped member reaching the bottom surface; and a fixing member that fixes the rod-shaped member to an adjustable position while engaging with the rod-shaped member on the bottom surface of the weight frame. 3. The elevator balance weight device according to claim 1, wherein the rod-shaped member is a bolt member, and the fixing member is a nut member. Weight device.