JPH09202565A - Elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify structure and provide good riding comfort through reduction of the generation of vibration and noise of a car under running. SOLUTION: A car 9 is run along a guide rail 13 with the car 9 supported, and a guide roller 27 consisting of three roller, different in a diameter from each other, of a small roller, a middle roller, and a large roller. Thus, since, even when a car is run after a stop for a long time, flat parts produced at three rollers different in a diameter from each other are almost prevented from simultaneous contact with the guide rail, the generation of vibration and noise is reduced and an elevator having an excellent riding comfort is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator, and more particularly to an elevator in which an elevator car is guided by guide rollers.

[0002]

2. Description of the Related Art An indirect hydraulic elevator is the most widely used system in Japan because it has a high degree of freedom in structure and can be installed even when the installation space in the height direction is limited. The elevator.

The structure of a conventional indirect hydraulic elevator is shown in FIGS. 11 to 13. In FIG. 11, a hydraulic jack 4 is provided on the floor surface 2 of the elevator hoistway 1 on the back side (hereinafter simply referred to as the back side) when viewed from the elevator opening / closing opening 3 of the elevator. A sheave 6 is rotatably provided at the tip of a plunger 5 of the jack 4, and one end of a rope 7 wound around the upper side of the sheave 6 is fixed to a floor surface 2 by a fixing metal fitting 8. The end penetrates the back side 11 of the floor surface 10 of the elevator car 9 and is fixed on the back side of the floor surface 10 via a spring 12 which is an elastic material for shock absorption.

The car 9 has a hoistway 1 with a floor 2 and a hoistway 3
As seen from above, the car 9 can be vertically slid along the guide rails 13 provided on both the left and right sides of the car 9 so that the car 9 is sandwiched between the upper and lower parts of the car 9. The guide shoe 14 is provided.

In the indirect hydraulic elevator having such a structure, a hydraulic pump (not shown) connected to the hydraulic jack 4 is operated to operate the plunger 5 of the jack 4.
By extending and retracting to move the sheave 6 up and down, the car 9 can be slid vertically along the guide rail via the rope 7. At this time, since only the rear side 11 of the floor 10 of the car 9 is pulled up by the rope 7, the lower part of the car 9 is pulled to the rear side and the upper part is pulled to the front side so that the car 9 can be tilted. The acting force is generated.
Such a force causes early wear and uneven wear of the guide rail 13 and the guide shoe 14, so that the upper portion of the car 9 may come into contact with the inner side of the guide rail 13 and the lower portion thereof may be in front of the guide rail 13. A guide roller 15 is provided so as to abut on the side to suppress the wear of the guide rail 13 and the guide shoe 14, and at the same time, reduce the vibration and running noise of the car 9.

As shown in FIGS. 12 and 13, such a guide roller 15 is generally a roller provided with a urethane rubber material 16 having an appropriate hardness for improving the riding comfort of an elevator along the outer periphery thereof. 17 and a shaft 19 having a bearing (not shown) that rotatably supports the roller 17 on a support base 18. The hardness of urethane rubber is preferably hard from the viewpoint of strength, but is preferably soft from the viewpoint of riding comfort, and an appropriate hardness is determined in consideration of these points.

[0007]

However, in the indirect hydraulic elevator having such a structure, when the car 9 is stopped for a long time, as shown in FIG.
The contact surface of the urethane rubber material 16 provided along the outer periphery of the roller 17 with the guide rail is slightly deformed, and a flat portion 20 is temporarily generated on the outer peripheral surface of the roller 17. Such a flat portion 20 has a diameter of the roller 17 of about 200 mm, while the length in the circumferential direction is very small, less than 1 mm. Is also difficult. However, in such a situation, when the car 9 starts traveling again and the roller 17 starts to rotate, the car 9 is contacted with the guide rail 13 every time the flat portion 20 abuts.
Is considerably large and causes unpleasant vibration and noise, and the flat part 20 which is a deformed part of the circumferential surface of the roller 17 is restored until the roller 17 returns to the original circular shape. There was a problem that the comfort was significantly reduced.

As an attempt to solve such a problem, there is an oblique elevator described in JP-A-5-319733. This elevator is shown in FIG. 15 and FIG.
As shown in FIG. 6, the traveling rail 70 and the traveling rail 70
A running roller 72 provided with an urethane rubber material 71 running along the outer periphery along the outer periphery, a stop floor rail 73 provided adjacent to the running rail 70 for each stop floor, and a stop floor at each stop floor. Further, it is provided with a trolley 75 having a steel outer periphery that abuts against the stop floor rail 73 and is composed of a traveling roller 72 and a stopping roller 74 having the same diameter.

In this example, the traveling roller 72 travels along the traveling rail 70 which is a guide rail provided in the hoistway of the elevator, but when stopping on each floor, a steel stopping roller is used. Since 74 receives the load from the car 76, it is possible to prevent the outer peripheral surface of the traveling roller 72 made of urethane rubber from being deformed while it is stopped, and it is possible to obtain an elevator that is comfortable to ride with less vibration and noise. . However, in this example, since the stop floor rail 73 is required, the structure of the guide rail itself becomes complicated, and when the urethane rubber traveling roller 72 wears, the traveling roller 72 and steel However, the diameter difference from the stopping roller 74, which hardly wears out, becomes large, and therefore, when the stopping roller 74 rides on the stop floor rail 73, a considerably large vibration, a metallic noise, or the like remains.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide an elevator having a simple structure and reducing the vibration and noise of a car during traveling to provide a comfortable ride. That is.

[0011]

An elevator according to claim 1, wherein a guide rail extending along an elevator hoistway and a hydraulic system provided on a floor surface of the hoistway are used to move up and down along the guide rail. , A sheave that is rotatably attached to the tip of the plunger of the jack and is vertically movable by the jack, and one end fixed to the floor surface,
A rope having an intermediate part hung on the sheave and the other end connected to the car, and provided on the car to run along a guide rail to support the car, and to be fixed by a roller shaft. And a guide roller having a closed roller.

In the elevator according to claim 2,
The guide rollers are lined up along the guide rail.

In the elevator according to claim 3,
The rollers of the guide rollers are aligned in a horizontal line with respect to the guide rails.

In the elevator according to claim 4,
The guide roller includes an elastic material that presses the roller against the guide rail.

In the elevator according to claim 5,
The roller of the guide roller is fixed by a shaft that is eccentric to the roller shaft.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. An indirect hydraulic elevator that is one embodiment of the elevator of the present invention is shown in FIGS. Since the basic structure is the same as that of the conventional indirect hydraulic elevator, the description is omitted. The elevator of the present invention includes a small roller 20, which is three rollers having different diameters,
The middle roller 21 and the large roller 22 are respectively attached to the shaft 2.
Similarly to the conventional example, the guide roller 27 rotatably fixed to the support base 26 by 3, 24 and 25 is brought into contact with the upper side of the car 9 at the back side of the guide rail 13 and at the lower side. The guide rail 13 is provided so as to come into contact with the front side thereof. Although the three rollers have different diameters as shown in FIG. 2, all the rollers are always guided by the guide rail 1.
3 is affixed to the support base 26 in a vertical row so as to come into contact with 3.

Even in such an elevator, the small roller 2 is stopped by stopping the elevator for a long time.
0, middle roller 21 and large roller 22 have flat portions 2
8, 29 and 30 respectively occur. When the elevator starts traveling in such a situation, the flat portion 28 of the small roller 20 first comes into contact with the guide rail 13, but at this time, as shown in FIG. When the circular portion 32 of the small roller abuts the circular portion 33 of the large roller 22 to support the car 9, and subsequently the flat portion 29 of the middle roller 21 is about to come into contact with the circular portion 31 of the small roller, When the circular portion 33 of the roller comes into contact with the guide rail 13 to support the car 9, and when the flat portion 30 of the large roller 22 is likely to come into contact with the guide rail 13 in sequence, the circular portion 31 of the small roller and the circular portion of the middle roller are formed. Since the car 9 is supported by at least two rollers, the guide rail 13 comes into contact with the portion 32 to support the car 9, so that the guide rail 13 has flat parts of three rollers. Either it will not be abutting.

As described above, since the elevator of the present invention is provided with the three rollers having different diameters, even when the elevator guide roller 27 has a flat portion on the rollers, even if the elevator starts traveling. The flat portion does not come into contact with the guide rail 13. Therefore, it is possible to provide an elevator that has less vibration and noise than the conventional elevator, has a good riding comfort, and has a simple structure.

Further, since the length in the circumferential direction of the flat portion formed on the circumferential surface of the roller is less than 1 mm, the maximum difference is obtained when the difference in diameter between the three rollers is made minute (about several mm). The effect can be obtained.

Actually, two or more of the flat portions of the three rollers having different diameters are simultaneously guided by the guide rail 1.
Although it is possible that the elevator may come into contact with the No. 3, such a case is extremely rare if the difference in the diameters of the three rollers is made small as described above, and an elevator that provides a more comfortable ride than the conventional elevator There is no difference in what you can get.

Further, as shown in FIGS. 5 and 6, the same effect as in the case of the above-mentioned structure can be obtained by arranging the three rollers in a horizontal row.

Embodiment 2 FIG. In this invention, FIG.
Further, as shown in FIG. 8, the support base 34 is pivotally fixed to the mounting base 35 by a fulcrum shaft 36 and a spring 37. Other configurations are similar to those of the first embodiment.

By using the spring 37 as described above, the support base 34 on which the three rollers are locked is constantly pressed against the guide rail 13, so that the small roller 20, the middle roller 21, and the large roller are supported. Even if there is a difference in the degree of progress of wear of 22, the rollers can be pressed against the guide rails, and there is always little vibration and noise, and the ride is comfortable and the elevator with a simple structure is provided. be able to.

Embodiment 3. In this invention, as shown in FIGS. 9 and 10, the small roller 38, the middle roller 39, and the large roller 40 of the guide roller have eccentric shafts 41, 42, and 43 screwed to the support base 26, respectively. The rotation shafts 44, 45, and 46 are rotatably fixed to the shaft.

The present invention is based on the eccentric shafts 41 and 4 as described above.
Since the rotating shafts 44, 45 and 46 having 2 and 43 are used, the fixed shaft 4 can be used when the rollers are worn.
By rotating 4, 45 and 46 for adjustment, it is possible to prevent the roller from abutting on the guide rail due to wear, and there is always less vibration and noise, and the ride is comfortable and the structure is simple. An elevator can be provided.

[Brief description of drawings]

FIG. 1 is a side view showing an elevator according to the present invention.

FIG. 2 is a side view showing a guide roller of the elevator according to the present invention.

FIG. 3 is a top view showing a guide roller of the elevator according to the present invention.

FIG. 4 is a side view showing an operating state of the guide roller of the elevator according to the present invention.

FIG. 5 is a top view showing an embodiment in which rollers of guide rollers of an elevator according to the present invention are arranged in a horizontal row.

FIG. 6 is a side view showing an embodiment in which rollers of guide rollers of the elevator according to the present invention are arranged in a horizontal row.

FIG. 7 is a side view showing another embodiment of the guide roller of the elevator according to the present invention.

FIG. 8 is a top view showing another embodiment of the guide roller of the elevator according to the present invention.

FIG. 9 is a side view showing another embodiment of the guide roller of the elevator according to the present invention.

FIG. 10 is a top view showing another embodiment of the guide roller of the elevator according to the present invention.

FIG. 11 is a side view showing a conventional indirect hydraulic elevator.

FIG. 12 is a side view showing a guide roller of a conventional indirect hydraulic elevator.

FIG. 13 is a top view showing a guide roller of a conventional indirect hydraulic elevator.

FIG. 14 is a side view showing a roller of a guide roller of a conventional indirect hydraulic elevator.

FIG. 15 is a side view showing a carriage of a skew elevator described in Japanese Patent Laid-Open No. 5-319733.

FIG. 16 is a top view showing a carriage of a skew elevator described in Japanese Patent Laid-Open No. 5-319733.

[Explanation of symbols]

1 elevator hoistway, 2 floors, 4 jacks, 5
Plunger, 6 sheaves, 7 ropes, 9 baskets, 12
Springs, 13 guide rails, 27 guide rollers.

Claims (6)

[Claims] 1. A guide rail that extends along an elevator hoistway, a car that moves up and down along the guide rail, a drive device that drives the car, and a travel provided along the guide rail that is provided in the car. And a guide roller having a roller supported by the roller shaft and fixed by a roller shaft. 2. The drive device includes a hydraulic jack provided on a floor surface of the hoistway, and a rope which is pivotally attached to the tip of a plunger of the jack so as to be vertically movable by the jack. The elevator according to claim 2, comprising a car, a rope having one end fixed to the floor surface, an intermediate part hung on the sheave, and the other end connected to the car. 3. The rollers of the guide roller are arranged in a line along the guide rail.
Or the elevator according to claim 2. 4. The elevator according to claim 1, wherein the rollers of the guide rollers are arranged in a line in a row with respect to the guide rails. 5. The elevator according to claim 1, wherein the guide roller includes an elastic member that presses the roller against the guide rail. 6. The elevator according to claim 1, wherein the roller of the guide roller is fixed by a shaft that is eccentric with respect to the roller shaft.