JPH01139486A - Bracing device for elevator moving cable - Google Patents

Abstract

PURPOSE: To reduce the abrasion of a cotton knit body and reduce drop impact by play-engaging cylindrical body made of material having middle hardness and low frictional coefficient with a hoop body in the shape of prayer beads. CONSTITUTION: A cylindrical body 7 made of ultrahigh molecular weight polyethylene having low frictional coefficient and middle hardness is tapered at its periphery and is play-engaged with a hoop body 6. Because as the cylindrical body 7 for forming outer surface of the hoop, ultrahigh molecular weight polyethylene having hardness lower than that of the prior hoop 5 made of stainless is used, the abrasion of a cotton knit body of a moving cable 4 as an abrasion object is reduced to a half or one several-th. In addition, frictional coefficient of a prior hoop 5 is as high as about 0.5, but this invention's frictional coefficient is as low as about 0.1. Therefore, rising height of the moving cable 4 is largely reduced by being entangled to a cotton knit body and drop impact is largely reduced.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an improvement in a device (hereinafter referred to as a hula hoop) for preventing the movement of a moving cable suspended between an elevator car and the surrounding wall of an elevator shaft. be.

[Prior Art] FIGS. 3 and 4 are a schematic front view and a side view of the main parts of a conventional hula hoop for a moving cable of an elevator shown in, for example, Japanese Utility Model Publication No. 54-23068,
In the figure, 1 is the peripheral wall of the elevator shaft, 2 is a car suspended by a hoisting rope 3, 4 is a moving cable suspended between the elevator car 3 and the peripheral wall 1 of the elevator shaft, and 5 is a metal This is a hula hoop made of a round rod ring coated with nylon resin.

Next, the operation will be explained.

The suspended moving cable 4 oscillates laterally in various ways due to internal strain when the bending section moves up and down.

Furthermore, the movable cables 4 made up of a plurality of cables are subjected to 4HJs separately due to lateral vibration caused by external factors such as wind in the building. Therefore, it may get caught on other elevator equipment or equipment (not shown) disposed within the peripheral wall 1 of the elevator shaft, causing breakage or contact damage.

The range of swing of the movable cable 4 was restricted by inserting the seven-sided hoop 5 into the U-shaped curved portion formed by suspending the movable cable 4.

[Problem to be solved by the invention 1 However, the conventional 7 la hoop 5 has a large hardness (
Since a stainless steel bar with a Pournelle hardness of approximately 200) is used, the cotton knitted material on the surface of the moving cable 4 wears quickly.
However, because the coefficient of friction is large (around 0.5), there are problems such as the hula hoop 5 being lifted up to the side as the car 2 rises, and the hula hoop 5 falling due to the falling impact may damage the hula hoop 5. Ta.

This invention was made to solve the above-mentioned problems, and it reduces the wear of the cotton knitted material coated on the surface of the moving cable 4, and also reduces the height to which the hula hoop 5 can be raised. In addition, it is an object of the present invention to obtain a hula hoop capable of reducing the fall impact by suppressing the height at which the hula hoop 5 is lifted.

Means for Solving Problem E 1 The hula hoop according to the present invention is made of conventional stainless steel 7
A cylindrical body having medium hardness and a low coefficient of friction, such as ultra-high molecular weight polyethylene, is extrapolated onto the rough hoop 5 in the shape of a bead.

[Function] By using a cylindrical body made of ultra-high molecular weight polyethylene such as Newlite on the outside, the hula hoop according to the present invention has a hardness that is several minutes lower than that of stainless steel 7 Lahou 15, and the coefficient of friction is also lower. It becomes - of several minutes.

[Example 1 An embodiment of the present invention will be described below with reference to the drawings.

In Figures 1 and 2, 6 is a hula hoop body made of a material with high Young's modulus and high hardness, and 7 is a cylindrical body made of ultra-high molecular weight polyethylene with a low coefficient of friction and medium hardness, and the peripheral surface is rounded. and is loosely fitted into the hula hoop main body 6. Reference numeral 8 denotes a cut portion for creating a structure in which a part of the hula hoop main body 6 is separated, and a seat plate 9 is welded to one end, and a double nut 10 is screwed into a screw 8a carved at the other end.

The cylindrical body 7 that forms the outer surface of the hula hoop is subject to friction because it is made of ultra-high molecular weight polyethylene (for example, New Light, hardness: Shore D67), which has a lower hardness than the conventional stainless steel hula hoop 5. The wear of the cotton knitted body of the moving cable 4 is reduced by a factor of two to several times.

Further, the friction coefficient of the conventional 7-rough hoop 5 was large, around 0.5, but since the ultra-high molecular weight polyethylene of this embodiment was used, the friction coefficient was around 0.1. Therefore, the height of the movable cable 4 raised by being caught on the cotton knitted body is significantly reduced, and since the falling impact is proportional to E-T, the falling impact is also significantly reduced.

The reason for the structure in which a part of the hula hoop main body 6 is separated is that when the moving cable gets caught in other equipment or equipment of the elevator arranged in the peripheral wall 1 of the elevator shaft when the moving cable 4 is moved up or down, the moving cable 4 7. The 7-luff body 6 is opened to prevent it from being pulled all the way.

Furthermore, since the seat plate 9 is welded to one end of the cutting portion 8 and the double nut 10 is screwed to the other end, the cylindrical body 7 loosely fitted into the hula hoop body 6 will not easily come off.
When replacing the cylindrical body 7, it can be easily removed.

The hula hoop H is lifted as the elevator ascends due to the frictional force between the movable cable 4 and the cotton knitted body, and falls from a position where the inclination angle of the movable cable 4 changes and the gravitational component force exceeds the frictional force.

Since the falling impact at this time is proportional to the square of the lifting height, the falling impact can be reduced to about one-half by reducing the friction coefficient to a fraction of the conventional value. Therefore, damage to the hula hoop due to falling impact can be prevented.

[Effect of the Invention 1 As described above, according to the present invention, in the hula hoop that movably bundles the moving cables 4 of an elevator, the hula hoop body 6 is made of high Young's modulus and high hardness such as stainless steel, and the hula hoop body 6 is made of a material such as ultra-high molecular weight polyethylene. Because of the structure in which the cylindrical body 7 made of a material with low hardness and low coefficient of friction is loosely fitted in a bead shape, the wear of the cotton knitted body covering the surface of the moving cable 4 is reduced to less than half. The rotation of the cylindrical body 7 promotes sliding, which reduces the impact of falling of the hula hoop to less than half, and has the effect of preventing damage to the hula hoop.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted front view of a hula hoop according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the vicinity of the cut portion, and FIG.
The figure is a front view of a conventional hula hoop used to bundle moving cables of an elevator, and FIG. 4 is a side view of the main parts thereof. 4... Moving cable, 5... Hula hoop, 6...
7 U71 tube body, 7... Cylindrical body, 8... Cutting portion,
9...Seat board, 10...Double nut. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa (2 others) Figure t buff, 77-7° ≠ 4 7: n 4k” f ≠ Figure 3 4!!I

Claims (2)

[Claims] (1) In a hula hoop that movably bundles moving cables that follow a moving elevator, a hula hoop body made of a material with a high Young's modulus and high hardness is provided, and a cylindrical body made of a material with medium hardness and a low coefficient of friction is attached to the hula hoop body. A steady rest device for an elevator moving cable, characterized by loose fitting in a bead shape. (2) A steady rest device for an elevator moving cable according to claim 1, characterized in that one part of the hula hoop body is cut off, one end is provided with a stopper for the cylindrical body, and the other end is screwed. .