JPH0275587A - Guide roller for elevator - Google Patents

Abstract

PURPOSE:To stand an unbalance load due to the stop for a long time and to prevent the local deformation of an elastic member by fitting and burying the annular and hard member of T shape in section on the outer peripheral face of the elastic member of a guide roller main body. CONSTITUTION:On the outer peripheral face of an elastic member part 14 (for instance, urethane) provided on the outer periphery of a guide roller 10 main body, an outer peripheral part 16A made of a member 16 (for instance, steel member) harder than this elastic member part 14 is arranged and fitted in all the circumferential direction. The hard member 16 has an extended part 16b of T shape in section which is extended toward the inside of the annular outer peripheral part 16A. The extended part 16b of this hard member 16 is buried and bonded on all the periphery in a radial direction where the elastic member 14 is deformed.

Description

[Detailed description of the invention] [Industrial use! F] The present invention relates to a guide roller for an elevator such as a hydraulic elevator having a car with a large eccentric load. [Conventional technology]

FIG. 5 is a partially sectional side view of a hydraulic elevator similar to the conventional elevator disclosed in, for example, Japanese Utility Model Application Publication No. 54-10962. In figure 1, 1 is the basket, 2 is the entrance/exit of the basket 1, 3 is the back part of the basket, and 4 is the back part 3.
5 is a hydraulic jack provided vertically on the back side of the π relegation, 6 is a diversion wheel pivotally attached to the upper end of the piston of the hydraulic jack 5, and 7 is one end. A main rope consisting of a wire rope is connected at one end to the connecting plate 4, hung on the deflection wheel 6, and connected at the other end to the installation surface 8 of the hydraulic jack 5; 9 is a guide installed vertically in the hoistway; It's a rail. Reference numeral 10 denotes a guide roller for preventing the car from overturning, which is pivoted to roller frames 12 provided at the upper and lower ends of the car 1 and abuts against the car rear side and the car front side, respectively, of the guide rail 9. The front guide rollers are pivotally attached to the upper and lower ends of the guide rail 9 and are in contact with the front surface of the guide rail 9. In the conventional elevator configured as described above, when the diversion wheel 6 rises due to the operation of the hydraulic jack 5, the car 1 rises via the main rope 7 and the connecting plate 4, and the hydraulic jack 5
When the operation is canceled, the car 1 descends due to gravity, and the deflection wheel 6 also descends. In addition, when the car 1 is raised or lowered, the guide rollers 10 for preventing falling roll on both sides of the guide rail 9, and the front guide rollers 11 move along the front of the guide rail 9, so that the running friction of the car 1 ( In the elevator described above, the car 1 is connected to the main rope 7 through the connecting plate 4 on the back side, and the car 1 is suspended from the main rope 7 while returning from the center of gravity in the depth direction. Therefore, a large unbalanced load is received by the guide roller 10 for preventing falling. Conventionally, the guide roller 10 for preventing falling falls, as shown in FIG. An elastic body part 14 made of urethane or the like is integrally formed into a short cylindrical shape, and a bearing 15 is fitted onto the inner peripheral surface of the main body 13, so that it is rotatably supported on the shaft of the roller frame via the bearing 15. .

[Problems to be Solved by the Invention] The conventional guide rollers for preventing falling used in elevators as described above had the outer peripheral portion made up of a single layer of elastic body portion 14, and therefore had the following problems. Ta. In other words, if the elastic body is made of urethane with a shore hardness of about 95°H8, if the car is stopped for a long time, the elastic body will be locally deformed due to the unbalanced load of the car, causing permanent set. Additionally, if a nylon roller with a Rockwell hardness of R120 or higher is used as a countermeasure, vibration will occur at the joint of the guide rail, and in order to prevent vibrations, it will be necessary to severely modify the level difference at the joint of the guide rail. There was a problem with the installation of the above rail. This invention was made to solve the above-mentioned problems, and can absorb the shock at the joint of the permanent set rail when the car is stopped for a long time. The purpose is to obtain an elevator guide roller that runs smoothly even if there is a problem. [Means for Solving the Problems] The present invention provides a guide roller that comes into contact with the guide rails of an elevator from both sides as described above to support the unbalanced load of the car, and includes an elastic body provided on the outer periphery of the roller body. The outer circumference of a member harder than the elastic body is disposed over the entire circumference of the elastic body, and a portion extending from the outer circumference of the hard member in the direction in which the elastic body deforms is the elastic body. It is embedded and fixed.

[For production]

In the elevator guide roller according to the present invention, the elastic body portion is made of urethane similar to conventional ones, and the hard member is made of steel or spring steel with Rockwell hardness R1.
20 or more, there is a hard member on the entire circumferential direction of the outer peripheral surface of the guide roller, and the hard member is arranged in the direction in which the elastic body part in the radial direction of the guide roller deforms when the car stops. Since the stretched portion is embedded and fixed in the elastic body, it can withstand uneven loads caused by long-term suspension of the car, prevents local deformation of the elastic body, and maintains the circular outer peripheral surface of the guide roller. drooping Furthermore, the fixed portion between the extended portion of the hard member and the elastic body portion can attenuate vibrations in the shear direction that occur during normal running of the car.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a guide roller for preventing an elevator from falling according to an embodiment of the present invention. In FIGS. 1 and 2, the same reference numerals as in FIG. 6 indicate corresponding parts, and 16 is a member made of spring steel or other steel material that is harder than the elastic body part 14 and has a Rockwell hardness of R120 or more. The hard member 16 has an extending portion 1 on the inner peripheral surface of the annular outer peripheral portion 16a.
6b is formed in a T-shaped cross section extending in the radial direction. The hard member 16 has an outer circumferential portion 16 a that is fitted and fixed to the outer circumferential surface of an elastic body portion 14 made of urethane or the like provided on the outer circumference of the roller body 13 , and an extending portion 16 b that extends to a radially intermediate portion of the elastic body portion 14 . It is embedded and fixed throughout its circumferential direction. The structure and use of the guide roller 1° for preventing falling according to this embodiment other than those described above are the same as those of the conventional guide roller 1° shown in FIGS. 6 and 5 described above. FIGS. 3 and 4 show guide rollers for preventing an elevator from falling according to another embodiment of the present invention. In FIGS. 3 and 4, the same reference numerals as in FIGS. 1 and 2 indicate corresponding parts, and 16 is a hard member formed in the shape of a perforated disc. The plates are spaced apart from each other in the axial direction, and are embedded and fixed in the elastic body part 14 extending from the outer periphery in the radial direction to the middle part. The structure and use of the guide roller 10 for preventing falling according to this embodiment other than those described above are the same as those shown in FIGS. 1 and 2. The guide roller 10 for preventing falling according to the second embodiment configured as described above has a hard member 16 having a Rockwell hardness of R120 or more on the entire outer peripheral surface of the roller in the circumferential direction.
The hard member 16 extends in the radial direction in which the elastic body part 14 deforms when the car is stopped, and the stretched part is embedded and fixed in the elastic body part 14, so that the car is stopped for a long time and receives an uneven load. Also, since the elastic body portion 14 is not locally deformed and the outer peripheral surface of the guide roller 10 is kept circular, the guide roller 1 is maintained even when the car is started after being stopped for a long time.
No vibrations occur due to the deformation of zero. In addition, since the hard member 16 and the elastic body part 14 are fixed from the radial intermediate part to the outer circumferential surface, vibrations in the shear direction that occur during normal running of the car are attenuated.
The vibration at the joint of the guide rail where the guide roller 10 rolls is attenuated, and even if there is a slight difference in the joint, the guide roller 10 runs smoothly, making it possible to correct the difference in height at the joint of the guide rail, such as when using nylon rollers. is also no longer necessary.

【Effect of the invention】

As explained above, according to the elevator guide roller of the present invention, the outer circumferential portion of the member that is harder than the elastic body portion is disposed over the entire circumferential direction of the outer circumferential surface of the roller, and the elastic body portion is deformed by an unbalanced load. Since the above-mentioned hard member is stretched in the direction of the car and embedded and fixed in the elastic body, the elastic member will not be locally deformed even if the car is stopped for a long time, and therefore the car will not vibrate even when starting after a long time stop. In addition, since the extended part of the hard member and the elastic part are firmly fixed, vibrations at the joint of the guide rail where the guide roller rolls can be damped, allowing smooth running. However, there is an effect that severe correction of the stepped portion of the guide rail is not required.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a guide roller of an elevator according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a guide of an elevator according to another embodiment of the invention. A front view showing the roller, Figure 4 is IV-IV in Figure 3.
5 is a partially sectional side view showing an elevator equipped with a conventional guide roller, and FIG. 6 is a sectional view corresponding to FIG. 2 showing a guide roller of a conventional elevator. 1... Car, 4... Main rope connecting plate, 5... Hydraulic jack, 6... Deflection wheel, 7... Main rope, 9... Guide rail, 10... Guide roller, 13... Roller body, 1
4...Elastic body portion, 15-bearing, 16...Hard member. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A car that is supported at a position eccentric from the center of gravity and moves up and down, a guide rail provided in the hoistway, and a plurality of guides that are attached to the car and come into contact with the guide rails from both sides to support the eccentric load of the car. A guide roller for an elevator equipped with a roller, wherein an outer circumferential portion of a member harder than the elastic body portion is disposed over the entire circumferential direction on the outer circumferential surface of an elastic body portion provided on the outer periphery of the roller body, and the above-mentioned A guide roller for an elevator, characterized in that a portion extending from the outer periphery of the hard member in the direction in which the elastic body part is deformed is embedded and fixed in the elastic body part.