JPH04303380A - Suspension pulley for elevator - Google Patents

Abstract

PURPOSE:To shorten the height of a suspension pulley attaching device for an elevator, composed of an upper beam for supporting a cage frame, a balance beam fixed to the upper beam, a beam for damping vibration of a suspension pulley, and the like. CONSTITUTION:A balance beam 2 and a beam for damping vibration of a suspension pulley are inserted through a hole 1a formed in a substantially center part of an upper beam 1, and is fixed thereto. Accordingly, the distance between the upper end face of the upper beam 1 and the lower end part of a suspension pulley 5 is shortened, thereby it is possible to obtain a margin between the suspension pulley attaching device and a machine room at the upper part of the elevator shaft.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator suspension wheel attachment device for attaching a suspension wheel for hanging a main rope to a car.

0002

2. Description of the Related Art FIG. 5 is a front view showing an example of the structure of a conventional elevator suspension wheel mounting device (for example,
(See Publication No. 24887). In the figure, 1 is the upper beam, 2 is the balance beam fixed perpendicular to the upper beam 1, 3 is the suspension wheel vibration isolation beam,
3a is a main rope stopper, 4 is a vibration isolator made of an elastic material such as rubber, which is interposed between the balance beam 2 and the suspension wheel vibration isolation beam 3; 5 is a suspension wheel attached to the balance beam 2; A main rope 6 is hung on the hanging wheel 5 to raise and lower the car, and is driven by a hoist installed in a machine room (not shown). 9 is the ceiling of the car, 9a is a lighting fixture for the inside of the car, 9b is a blower for the inside of the car, and A is the distance between the upper end surface of the upper beam 1 and the lower end of the hanging wheel 5.

0003

[Problems to be Solved by the Invention] The conventional elevator suspension wheel mounting device as described above is designed so that the outer circumferential width of the suspension wheels 5, 5 which are pivotally supported at both ends of the balance beam 2, and the width of the suspension wheels provided in the machine room are By almost matching the diameter of the hoisting drum of the output shaft of the hoisting machine, the winding angle between the main rope 6 and the hoisting drum can be approximately 180°, which reduces the friction between the main rope and the hoisting drum. This has the advantage of increasing transmission efficiency. However, upper beam 1
If the structure is such that the balance beam 2 is fixed to the lower end surface of the cage 9, the distance A between the upper end surface of the upper beam 1 and the lower end of the hanging wheel 5 shown in FIG. Problems may occur in the case of an architectural structure in which the clearance between the hoistway and the machine room provided at the top of the hoistway is restricted.

[0004] This invention was made to solve the above-mentioned problems, and by shortening the distance between the upper end surface of the upper beam and the lower end of the hanging wheel as much as possible, there is no space between the machine room and the machine room. The object of the present invention is to provide an elevator suspension wheel mounting device that provides a sufficient margin.

[0005]

[Means for Solving the Problems] An elevator suspension wheel mounting device according to the present invention is such that a balance beam or a suspension wheel vibration isolation beam is inserted into a hole provided in an upper beam and fixed therein.

[0006]

[Operation] In this invention, the balance beam, which was conventionally fixed to the lower end surface of the upper beam, is inserted through the hole provided in the center of the upper beam, so that the balance beam is inserted only by approximately 1/2 of the height of the upper beam. The car suspension structure can be shortened. Further, by configuring the hanging wheel vibration isolation beam installed below the balance beam to be inserted into a hole provided in the center of the above-mentioned upper beam, the car suspension structure can be further shortened.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing the structure of an embodiment of the present invention, and FIG. 2 is a perspective view of FIG. 1. Note that in FIGS. 1 and 2, 1 to 6, 9, 9a, and 9b are the same as or equivalent to the portions with the same reference numerals in FIG. 5 of the conventional example, so the description thereof will be omitted. 1a is a hole made approximately in the center of the upper beam 1 in order to insert the balance beam 2 orthogonally to the upper beam 1, 1b is a pillar of the car frame, and 1c is a hole for attaching the pillar 1b of the car frame to the upper beam 1. Partial reinforcement plate, 2a is a mounting plate for fixing the balance beam 2 to the upper beam 1,
7 is a guide shoe, and 8 is an oil supply device.

As described above, when the balance beam 2 is inserted perpendicularly into the hole 1a provided in the upper beam 1 and fixed by the mounting plate 2a, as is clear from the comparison between FIG. 1 and FIG. The distance A between the upper end surface of the upper beam 1 and the lower end of the hanging wheel 5 can be shortened by about 1/2 of the height of the upper beam 1.

FIG. 3 is a front view showing the configuration of another embodiment of the present invention, and FIG. 4 is a perspective view of FIG. 3. In FIGS. 3 and 4, all reference numerals indicate the same or equivalent parts as in the embodiments of FIGS. 1 and 2. In this embodiment, the suspension wheel vibration isolation beam 3 is inserted into the hole 1a provided approximately in the center of the upper beam 1,
A balance plate 2 is fixed to an upper beam 1 by a mounting plate 2a.

As described above, when the suspension wheel vibration isolating beam 3 is inserted into the hole 1a provided in the upper beam 1 and fixed by the mounting plate 2a, as is clear from the comparison between FIG. 3 and FIG. The distance A between the upper end surface of 1 and the lower end of the hanging wheel 5 can be further shortened.

[0011]

As described above, according to the present invention, the balance beam or the suspension wheel vibration isolating beam is fixed by being inserted into the hole provided in the upper beam. The distance between the lower ends of the elevator can be shortened, and thereby an elevator suspension wheel mounting device can be obtained that has a margin between the elevator and the machine room at the upper part of the hoistway.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the configuration of an embodiment of the present invention.

FIG. 2 is a perspective view of FIG. 1.

FIG. 3 is a front view showing the configuration of another embodiment of the invention.

FIG. 4 is a perspective view of FIG. 3;

FIG. 5 is a front view showing a configuration example of a conventional elevator suspension wheel mounting device.

[Explanation of symbols]

1 Upper beam 1a hole 2. Balance beam 3 Hanging wheel vibration isolation beam 5 Hanging wheel

Claims (2)

[Claims] [Claim 1] In an elevator car suspension structure,
A suspension wheel mounting device for an elevator, characterized in that a hole is provided at approximately the center of an upper beam that supports a car frame, and a balance beam that supports a suspension wheel is inserted into the hole and fixed. 2. The elevator suspension wheel mounting device according to claim 1, wherein a suspension wheel vibration isolation beam is inserted and fixed in place of the balance beam through the hole provided in the upper beam.