JP4772986B2 - Elevator main rope locking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator main rope detachment prevention device.
[0002]
[Prior art]
FIG. 6 is a front view showing a schematic configuration of a conventional elevator main rope detachment preventing device described in, for example, Japanese Utility Model Publication No. 55-47809, and FIG. 7 is a side view of FIG.
In these drawings, reference numeral 1 denotes a hoisting motor, which is installed on a mounting base 2.
Reference numeral 3 denotes a drive sheave coupled to the output shaft of the hoisting motor, and a plurality of main rope grooves 3a for winding the main rope a plurality of times are provided on the surface thereof.
4 is a deflecting sheave, and a plurality of main rope grooves 4a for winding the main rope a plurality of times are provided on the surface thereof, like the drive sheave 3.
Reference numeral 5 denotes a main rope, which is wound a plurality of times between the main rope groove 3a of the driving sheave 3 and the main rope groove 4a of the baffle sheave 4, with a car 6 at one end and at the other end. The counterweight 7 is hung.
[0003]
8 is a main rope restraining portion provided so as to face the main ropeway of the drive sheave 3 and the deflector sheave 4, and the main rope 5 is wound around the main ropeway of the drive sheave 3 and the deflector sheave 4. When fixed, the bolt 84 is fixed to the fixing part of the hoisting motor or the mounting base 2 so as to keep a gap g between the main rope 5 and the main rope 5.
FIG. 8 is a perspective view showing a schematic configuration of the main rope holding portion 8, in which two long holes 83 are arranged in parallel in the bent portion 82 of the main body 81 formed in an L shape, and are fixed to the respective long holes. The bolt 84 is inserted. Reference numeral 85 denotes a contact member provided on the main rope side surface of the main body 81. Since the fixing position of the main rope holding portion 8 can move within the range of the long hole 82, the gap g with the main rope 5 can be adjusted. The gap g is not in contact with the main rope 5 and the contact member 85 during normal operation, and the main rope 5 and the contact member 85 are not in contact with the main rope 5 when the main rope 5 is vibrated due to an earthquake or other abnormal vibration. A value suitable for preventing the main rope wound around the driving sheave or the like from coming into contact with the contact member 85 from further floating and preventing the main rope 5 from coming off the main rope grooves 3a, 4a. Is set.
[0004]
[Problems to be solved by the invention]
Since the conventional main rope locking device is configured as described above, when the main rope is wound around the driving sheave and the deflecting sheave, the main rope restraining portion 8 is removed together with the bolt 84, and the main rope is wound around. Later, it was necessary to fix the main rope holding portion 8 again with the bolts 84 and adjust the gap g.
In order to carry out these operations, it is necessary to secure a certain working space between the drive sheave and the main rope restraining portion between the wall surface and the installation position of the hoisting motor and the drive sheave is restricted. There was a problem of being.
In particular, in an elevator using a hoisting motor installed in a hoistway, which has been increasing in recent years, this problem becomes more serious because the installation space for the hoisting motor is narrow.
[0005]
The present invention has been made to solve the above-described problems, and when the hoisting motor and the driving sheave provided with the main rope restraining portion do not have sufficient work space between the four-side wall surfaces and the like. However, it is possible to provide an elevator main rope detachment preventing device that can easily wrap the main rope around the driving sheave and can easily adjust and check the gap between the main rope and the main rope holding portion. For the purpose.
[0006]
[Means for Solving the Problems]
An elevator main rope locking device according to the present invention is wound around a driving sheave coupled to a hoisting motor, and is driven by a main rope having one end connected to a car and the other end connected to a counterweight. In the device for preventing the sheave from coming off from the sheave of the sheave, it is disposed in the vicinity of the driving sheave, and one end is rotatably supported and the other end is supported to be movable within a predetermined range. An arm and a main rope restraining portion that is provided at an intermediate portion of the arm and holds a predetermined gap between the arm and the arm. The arm has an L-shaped hole at one end, and the L-shaped hole One end is rotatably supported by a shaft portion inserted into the shaft, and a linear elongated hole is provided at the other end, and the other end is supported by a shaft-shaped fixing member inserted into the elongated hole. .
[0008]
In the elevator main rope detachment preventing device according to the present invention, the arms are provided in the vertical direction on both sides of the driving sheave.
[0009]
In the elevator main rope locking device according to the present invention, two types of gauges having different thicknesses are used in the gap between the main rope holding portion and the main rope, and a thin gauge is inserted into the gap. The thickness of the gap is set so that a thick gauge cannot be inserted into the gap.
[0010]
The elevator main rope detachment preventing device according to the present invention also includes a restraining plate having a width capable of accommodating all the main ropes on the surface of the driving sheave while the main rope is wound around the driving sheave several times. It is made to have.
[0011]
In the elevator main rope detachment preventing device according to the present invention, the retainer plate has a first bolt hole through which the bolt is inserted and supported by the arm, and a position farther from the first bolt hole than the main rope. The second bolt hole is provided, the gap between the first bolt hole and the bolt is reduced, the gap between the second bolt hole and the bolt is increased, and the first bolt hole is inserted. It can be rotated around a bolt.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view showing a schematic configuration of the first embodiment, and assumes a case where a hoisting motor is disposed below a hoistway (such as a pit). FIG. 2 is also a plan view.
In these drawings, 1 is a hoisting motor, 1a is an output shaft thereof, 3 is a driving sheave coupled to the output shaft 1a, and a plurality of main rope grooves for winding the main rope around the surface several times. 3a is provided.
A main rope 5 is wound around the main rope groove 3a of the driving sheave 3 a plurality of times, and a car 6 is suspended at one end via a return wheel 10, and a return wheel 11 is attached to the other end. A counterweight 7 is hung through.
[0013]
Reference numeral 9 denotes a main rope restraining portion which is provided on both sides of the driving sheave 3 and has a configuration described below. That is, 91 is an arm extending in the vertical direction, 92 is an extension extending from the upper end and lower end of the arm 91 toward the drive sheave 3, and 93 is an L-shaped hole formed in the lower extension 92. , 94 are formed in the extension 92 at the upper end and extend in the horizontal direction in FIG. 1, 95 is a bolt inserted into the L-shaped hole 93 to support the lower end of the arm 91, and 96 is a straight line A bolt inserted through the elongated hole 94 to fix the upper end of the arm 91, 97 is a mounting portion provided in the middle portion of the arm 91, and 98 is fixed to the mounting portion 97, from the main rope groove of the driving sheave. This is a restraining plate that prevents the main rope 5 from coming off due to lifting, and has a width corresponding to all the main ropes on the surface of the drive sheave wound around the drive sheave 3 a plurality of times.
Reference numerals 99A and 99B denote two bolts for fixing the restraining plate 98, and they are arranged at an appropriate interval in a direction orthogonal to the output shaft 1a. Further, g is a gap between the suppression plate 98 and the main rope 5.
[0014]
In such a configuration, when the main rope 5 is wound around the driving sheave 3, the bolt 96 at the upper end of the arm 91 is loosened, the extension 92 at the upper end is lifted, and the arm 91 is moved upward in the figure. The lower end bolt 95 is positioned in the horizontal portion of the L-shaped hole 93 and the arm 91 is rotated to move the lower end extension 92 away from the drive sheave 3 in the figure. Thus, the state shown in FIG. 3 is obtained. At this time, as shown in FIG. 3, a sufficient space is formed between the restraining plate 98 and the drive sheave 3, so that the main rope 5 can be wound around the drive sheave 3.
After the main rope 5 is wound around the drive sheave 3, the arm 91 is rotated in the reverse direction to move the lower end extension 92 toward the drive sheave 3 so that the bolt 95 is an L-shaped hole. 93 is entered, and the lower end of the arm is in the state shown in FIG.
In this state, the lower end of the arm does not move in the left-right direction in the figure, and the bolt 95 functions as a fulcrum, so by moving the extension 92 at the upper end along the long hole 94 toward the drive sheave 3, The end face of the suppression plate 98 can be brought closer to the main rope 5 side, and the gap g can be adjusted.
[0015]
The gap g is a driving sheave for the main rope 5 when the main rope 5 does not come into contact with the restraining plate 98 during normal operation and the main rope 5 is vibrated due to an earthquake or other abnormal vibration. 3 is set to a value at which the portion wound around 3 floats up and comes into contact with the restraining plate 98 and can restrain further lifting of the main rope.
In adjusting the gap g, it is possible to confirm whether the gap is an appropriate value by a simple operation by using two types of gauges having different thicknesses. That is, one gauge is thicker than the gap reference value, and the other gauge is thinner than the gap reference value. As shown in FIG. The thin gauge 16 is sequentially inserted into the gap between the main rope 5 and the restraining plate 98.
Confirm that the gap is adjusted to an appropriate value by confirming that the thin gauge 16 can be inserted into the gap and the thick gauge 15 cannot be inserted into the gap. Can do. At this stage, the bolt 96 at the upper end of the arm 91 is fixed, and the adjustment of the gap is completed.
[0016]
When the main rope 5 is wound around the driving sheave 3 a plurality of times and the plurality of main ropes 5 coexist on the surface of the driving sheave 3, as shown in FIG. The gap g1 between the main rope 5 wound around the side and the restraint plate 98 and the gap g2 between the main rope 5 wound around the other side of the drive sheave 3 and the restraint plate 98 need to be the same. Therefore, further fine adjustment is required.
For this reason, the diameter of the bolt hole through which the two bolts 99A and 99B for fixing the restraining plate 98 are inserted is made different, and the bolt hole near the main rope 5, that is, the bolt hole of the bolt 99A has a gap with the bolt 99A. The bolt hole on the side far from the main rope 5, that is, the bolt hole of the bolt 99B, is made to have a large gap with the bolt 99B.
Therefore, when adjusting the gaps g1 and g2, the bolt 99B is loosened, and the restraining plate 98 is rotated clockwise or counterclockwise in FIG. 5 with the bolt 99A as a fulcrum, thereby adjusting g1 and g2 to the same value. be able to.
[0017]
【The invention's effect】
As described above, the elevator main rope detachment preventing device according to the present invention is wound around the driving sheave coupled to the hoisting motor, one end is connected to the car, and the other end is connected to the counterweight. In the device that prevents the main rope from coming off from the winding part of the driving sheave, it is arranged in the vicinity of the driving sheave, one end is rotatably supported, and the other end moves within a predetermined range. An arm that is supported, and a main rope restraining portion that is provided at an intermediate portion of the arm and that holds a predetermined gap between the main rope and the arm is provided with an L-shaped hole at one end. One end is rotatably supported by a shaft portion inserted through the L-shaped hole, and a straight elongated hole is provided at the other end, and the other end is supported by a shaft-shaped fixing member inserted through the elongated hole. for those that, enough space to perform the adjustment confirmation operation between the four-way wall Even if there is a space for operating the upper end of the arm at the upper part of the hoisting motor and the driving sheave, it is possible to secure a space for winding the main rope around the driving sheave by operating the upper end of the arm. In addition, it is possible to adjust the gap between the main rope holding portion and the main rope of the driving sheave.
Accordingly, there are no restrictions on the installation positions of the hoisting motor and the driving sheave. In addition, since the main rope restraining portion can be adjusted with respect to the main rope of the driving sheave by rotating with one end of the arm as a fulcrum, the adjustment accuracy can be improved.
[0018]
In the elevator main rope locking device according to the present invention, two types of gauges having different thicknesses are used for adjusting the gap between the main rope holding portion and the main rope, and the thin gauge is inserted into the gap. The thickness of the gap is set so that a thick gauge cannot be inserted into the gap, so if there is a small opening above the gap, the gap can be easily checked. Can be performed.
[0019]
The elevator main rope detachment preventing device according to the present invention also has a holding plate having a width that can wrap the main rope around the drive sheave several times and can handle all the main ropes on the surface of the drive sheave. And the holding plate is provided with a first bolt hole through which the bolt is inserted and supported by the arm, and a second bolt hole provided at a position far from the first bolt hole with respect to the main rope, The clearance between the first bolt hole and the bolt is reduced, and the clearance between the second bolt hole and the bolt is increased so that the bolt inserted through the first bolt hole can be rotated. Therefore, it becomes easy to set the gaps between all the main ropes on the surface of the driving sheave and the holding plate to be the same.
[Brief description of the drawings]
FIG. 1 is a front view showing a schematic configuration of a first embodiment of the present invention.
FIG. 2 is a side view showing a schematic configuration of the first embodiment of the present invention.
FIG. 3 is a front view showing an aspect of the operation of the first embodiment of the present invention.
FIG. 4 is a partial front view for explaining a gap confirmation operation according to the first embodiment of the present invention.
FIG. 5 is a plan view showing a configuration of an embodiment for a plurality of main ropes.
FIG. 6 is a front view showing a schematic configuration of a conventional elevator main rope detachment prevention device.
FIG. 7 is a side view showing a schematic configuration of a conventional elevator main rope detachment prevention device.
FIG. 8 is a perspective view showing a schematic configuration of a conventional main rope restraining portion.
[Explanation of symbols]
1 hoisting motor, 3 drive sheave, 5 main rope, 6 passenger car, 7 counterweight, 9 main rope restraint, 10, 11 return wheel, 91 arm, 92 extension, 93 L-shaped hole, 94 length Hole, 95, 96 bolt, 97 mounting portion, 98 restraining plate, 99A, 99B bolt, g gap.

Claims (5)

To prevent the main rope, which is wound around the driving sheave coupled to the hoisting motor and connected at one end to the car and connected at the other end to the counterweight, from coming off from the driving sheave of the driving sheave. In the apparatus, the arm is disposed near the drive sheave, one end is rotatably supported, and the other end is movably supported within a predetermined range, and is provided at an intermediate portion of the arm. A main rope holding portion that holds a predetermined gap between the main rope and the main rope ;
The arm is provided with an L-shaped hole at one end, and one end is rotatably supported by a shaft portion inserted through the L-shaped hole, and a straight long hole is provided at the other end. An elevator main rope detachment preventing device , wherein the other end is supported by a shaft-like fixing member inserted through the hole . Arm, the latch device for an elevator for main ropes of claim 1 Symbol placement and which are located vertically on both sides of the traction sheave. For the gap between the main rope holding portion and the main rope, two types of gauges having different thicknesses are used. A gauge with a small thickness can be inserted into the gap, and a gauge with a large thickness is inserted into the gap. The apparatus according to claim 1 or 2 , wherein the dimensions are set so that the main rope for an elevator cannot be removed. The main rope is wound around the driving sheave a plurality of times, and a holding plate having a width that can correspond to all the main ropes on the surface of the driving sheave is provided. Item 4. The main locking device for elevators according to any one of items 3 to 4 . The holding plate has a first bolt hole that is inserted into the bolt and supported by the arm, and a second bolt hole that is provided at a position farther from the first bolt hole than the main rope. The gap between the hole and the bolt is reduced, and the gap between the second bolt hole and the bolt is increased so that the bolt can be rotated around the bolt inserted into the first bolt hole. The elevator main rope detachment preventing device according to claim 4 .

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