KR20240029977A - Guide roller for elevator - Google Patents

Abstract

The present invention can reduce material costs and shorten the manufacturing period by simplifying the structure by reducing the existing three rollers to one roller, and forms a rubber elastic body on the outer peripheral surface of the roller body to absorb vibration transmitted from the balance rail. This is an elevator guide roller that improves the riding comfort of the elevator car and improves the stability of the elevator car as well as the roller body can be rotated stably as both sides of the guide groove are inclined at a certain angle to prevent it from sticking to both sides of the counterweight rail. It's about.

Description

Guide roller for elevator {Guide roller for elevator}

The present invention relates to a guide roller for an elevator. More specifically, the present invention can reduce material costs and shorten the manufacturing period by simplifying the structure by reducing the existing three rollers to one roller, and has a rubber elastic body on the outer peripheral surface of the roller body. By forming a , the vibration transmitted from the counterweight rail is absorbed to improve the riding comfort of the elevator car. Both sides of the guide groove are inclined at a certain angle to prevent it from coming into close contact with the both sides of the counterweight rail, so the roller body can rotate stably. This relates to a guide roller for an elevator that improves the stability of the elevator car.

In general, elevators are devices installed in various types of high-rise buildings built for residential or business purposes and configured to move back and forth vertically along the hoistway to move passengers visiting the building to a predetermined destination floor.

The elevator is equipped with an elevator car that moves passengers in an upward and downward direction via a guide rail in a vertically formed hoistway inside the building with passengers inside the elevator, and the elevator car is equipped with an elevator car that moves passengers in a vertical direction inside the building. and a car door that opens and closes for disembarkation is installed.

In addition, on the upper side of the hoistway corresponding to the upper side of the elevator car, a lifting and lowering device is installed to raise and lower the elevator car to the corresponding floor according to the passenger's button operation, and the lifting and lowering device is installed in response to the passenger's button operation. The elevator car is operated smoothly and stably according to the control of the elevator control unit.

The lifting and lowering device includes a motor that generates a predetermined power, and a main sheave ((( main sheave), etc. are provided, where one end of the main rope is connected to the elevator car and the other end is connected to a counterweight to balance the ascending and descending elevator car.

Meanwhile, the elevator car moving in the up and down directions within the hoistway generates certain vibration and noise when traveling via the guide rail, which affects the riding comfort of the elevator.

Recently, in order to solve the above problems, a roller guide device for elevators has been registered under Korean Utility Model No. 20-0494723.

As shown in FIGS. 1 and 2, the pre-registered design includes a roller guide device installed in an elevator car that raises and lowers along a guide rail, and is bent at a right angle to be fixed to the top of the elevator car. plate (100); The fixing plate 100 includes a floor plate 110 fixed to the elevator; A vertical plate 120 formed to be vertically bent at an end of the bottom plate 110; A coupling hole 130 that penetrates the central portion of the vertical plate 120 and is coupled to the coupling piece 240 of the support plate 200; A coupling guide hole 140 is formed through each side of the coupling hole 130 to guide the coupling of the first roller 300, and is coupled to one side of the fixing plate 100 at a certain interval. A support plate 200 to which the first and second rollers 300 and 400 are coupled; A pair of first rollers 300 coupled to the support plate 230 of the support plate 200; A second roller 400 coupled to the coupling piece 240 of the support plate 200; A vibration isolation unit 500 is installed between the fixing plate 100 and the support plate 200 to improve riding comfort by reducing vibration and noise when ascending and descending the elevator car.

However, the line registration design configured as described above consists of a pair of first rollers 300 coupled to the support plate 230 and a second roller 400 coupled to the coupling piece 240. This has the advantage of maintaining the balance of the elevator car by preventing vibration and noise when the elevator car goes up and down, but it has the problem of being uneconomical as the manufacturing cost and manufacturing period increase.

Republic of Korea Utility Model No. 20-0494723 (announced on December 6, 2021)

The present invention was devised to solve the above problems, and the purpose of the present invention is to simplify the structure by reducing the existing three rollers to one roller, thereby dramatically saving material costs and improving assembly, shortening the production period. To provide a guide roller for an elevator that can shorten.

In addition, another object of the present invention is to provide a guide roller for an elevator that improves the riding comfort of the elevator car by absorbing vibration transmitted from the counterweight rail by forming a rubber elastic body on the outer peripheral surface of the roller body.

Another object of the present invention is to provide an elevator guide roller that not only allows the roller body to rotate stably but also greatly improves the stability of the elevator car by preventing it from coming into close contact with both sides of the counterweight rail since both sides of the guide groove are inclined at a certain angle. It is provided.

The object of the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

The guide roller for an elevator of the present invention for solving the above problems includes a fixing bracket that is fixed to the upper and lower parts of an elevator car or a counterweight and has a pair of fixing bars formed vertically to fix the roller portion; A vibration damping member mounted through a mounting hole formed in the pair of fixtures; A shaft horizontally coupled to the vibration damping member; a buffer pad coupled to the shaft and in close contact with both sides of the fixture to cushion vibration transmitted from the shaft; A fixing plate in close contact with the outer surface of the shaft and the shock absorbing pad; a fixing bolt fastened from the outside of the fixing plate to the inside of the shaft; A roller part that is fixed to the shaft and rotates and attenuates vibration and noise as the rubber elastic body rises and falls along the balance weight rail; A snap ring that secures a bearing mounted on the inside of the roller portion; A fixing ring is mounted on the shaft and is in close contact between the bearing and the vibration damping member to prevent the roller portion from shaking.

The fixing bracket includes a fixing plate fixed to the upper and lower portions of the elevator car or counterweight; Fixing bars formed at regular intervals on the upper part of the fixing plate; A mounting hole is provided that penetrates the fixture and into which the vibration damping member is mounted.

The inner portion of the buffer pad close to the hole formed in the center is in close contact with both sides of the vibration damping member 20, and the edge portions are in close contact with both sides of the fixture.

When fixing the fixing plate, the inner part close to the hole formed in the central part is in close contact with the shaft, and the edge part is in close contact with the outer surface of the buffer pad to prevent vibration and noise.

The roller unit includes a roller body; A rubber elastic body mounted on the outer peripheral surface of the roller body to attenuate vibration transmitted from the counterweight rail; A bearing is installed on the inside of the roller body and fixed to the outer peripheral surface of the shaft to rotate the roller body, and a guide groove to which the counterweight rail is coupled is further provided on the outer peripheral surface of the rubber elastic body.

Both sides of the guide groove are inclined at a certain angle, and the guide groove smoothens the rotation of the roller unit when moving up and down along the counterweight rail.

A mounting portion formed inside the roller body to which the bearing is mounted; a stopper formed at one end of the mounting portion and allowing one side of the bearing to come into close contact with it; A fixing groove is provided at the other end of the mounting part to which the snap ring is fixed.

According to the present invention, the structure is simplified by reducing the existing three rollers to one roller, thereby dramatically saving material costs and improving assembly, thereby shortening the manufacturing period.

In addition, according to the present invention, a rubber elastic body is formed on the outer peripheral surface of the roller body to absorb noise and vibration transmitted from the counterweight rail, thereby improving the durability and riding comfort of the elevator car.

In addition, according to the present invention, both sides of the guide groove are inclined at a certain angle and do not come into close contact with the two sides of the counterweight rail, so the roller body can be rotated stably and the stability of the elevator car is improved.

Figure 1 is a front perspective view of a conventional guide device.
Figure 2 is a rear perspective view of a conventional guide device.
Figure 3 is a front perspective view of a guide roller for an elevator according to the present invention.
Figure 4 is an exploded perspective view of the guide roller for an elevator according to the present invention.
Figure 5 is a front cross-sectional view of a guide roller for an elevator according to the present invention.
Figure 6 is a plan view showing the guide roller for an elevator according to the present invention installed on a counterweight rail.
Figure 7 is a side configuration diagram of the guide roller for an elevator according to the present invention when installed on a counterweight rail.

Hereinafter, an embodiment of the present invention will be described in detail based on the attached drawings.

Figure 3 is a front perspective view of the guide roller for an elevator according to the present invention, and Figure 4 is an exploded perspective view of the guide roller for an elevator according to the present invention.

The guide roller for an elevator according to the present invention is fixed to the upper and lower parts of an elevator car or a counterweight, and includes a fixing bracket (10) in which a pair of fixing bars (12) are formed vertically to fix the roller portion (70); A vibration damping member (20) mounted through a mounting hole (13) formed in the pair of fixtures (12); A shaft (30) horizontally coupled to the vibration damping member (20); A buffer pad 40 coupled to the shaft 30 and in close contact with both sides of the fixture 12 to cushion vibration transmitted from the shaft 30; A fixing plate 50 in close contact with the outer surface of the shaft 30 and the buffer pad 40; A fixing bolt 60 fastened from the outside of the fixing plate 50 to the inside of the shaft 30; A roller portion 70 that is fixed to the shaft 30 and rotates and attenuates vibration and noise as the rubber elastic body 72 moves up and down along the counterweight rail (R); A snap ring 80 that secures the bearing 73 mounted on the inside of the roller unit 70; A fixing ring 90 is mounted on the shaft 30 and is in close contact between the bearing 73 and the buffer pad 40 to prevent the roller part 70 from shaking.

The fixing bracket 10 is fixed to the fixing plate 11 formed horizontally on the upper and lower portions of the elevator car or counterweight using fixing screws or bolts/nuts.

A fixing table 12 is provided on the upper part of the fixing plate 11 and spaced at regular intervals, and a mounting hole 13 is formed through the fixing base 12 so that the vibration damping member 20 is mounted.

The vibration damping member 20 is mounted on the mounting hole 13 to absorb vibration and is made of a rubber material.

The shaft 30 is coupled through a hole formed in the center of the vibration damping member 20, and threaded holes are formed at both ends of the shaft 30.

The shock absorbing pads 40 are formed in a set of two and are coupled to both ends of the shaft 30, and are in close contact with both sides of the fixture 12 spaced at regular intervals.

The buffer pad 40 is made of a rubber material to absorb vibration transmitted to the shaft 30, and the inner portion adjacent to the hole formed in the center of the buffer pad 40 is the vibration damping member 20. It is in close contact with both sides, and the edge portion is in close contact with both sides of the fixture 12, thereby effectively cushioning vibration.

In addition, the fixing plate 50 is in close contact with the outer surface of the shaft 30 and the buffer pad 40, and at this time, the inner portion close to the through hole formed in the center of the fixing plate 50 is in close contact with the shaft 30. , the edge portion is in close contact with the outer surface of the buffer pad 40.

The fixing bolt 60 is fastened with a threaded hole formed in the shaft 30 on the outside of the fixing plate 50 to fix the shaft 30 to the fixing base 12 of the fixing bracket 10.

Here, the shaft 30 is coupled to the vibration damping member 20 mounted on the mounting hole 13, and the fixing plate 50 is in close contact with the outer surface of the buffer pad 40, so that the elevator car can be operated. ·It stably absorbs vibrations that occur during descent.

In addition, as shown in FIGS. 5 to 7, the roller unit 70 is composed of a roller body 71, a rubber elastic body 72, a bearing 73, and a guide groove 74.

The roller body 71 is a rotating body that rotates for the raising and lowering of an elevator car or a counterweight, and a rubber elastic body 72 is formed on the outer peripheral surface of the roller body 71 to absorb vibration transmitted from the counterweight rail (R). It attenuates.

A mounting portion 75 on which the bearing 73 is mounted is formed on the inside of the roller body 71, and a stopper 76 made of a step is formed at one end of the mounting portion 75 to secure one side of the bearing 73. The sides stick together and get stuck.

A fixing groove 77 is formed at the other end of the mounting part 75, and a snap ring 80 is mounted in the fixing groove 77 to fix the bearing 73.

A bearing 73 is mounted on the mounting portion 75 formed on the roller body 71 and is fixed to the outer peripheral surface of the shaft 30, and the roller body 71 rotates by rotation of the bearing 73. .

A guide groove 74 to which the counterweight rail (R) is coupled is formed on the outer peripheral surface of the rubber elastic body 72, and the end of the counterweight rail (R) is in close contact with the guide groove 74.

Both sides of the guide groove 74 are inclined at a certain angle to prevent the two sides of the guide groove 74 from coming into close contact with the both sides of the counterweight rail (R), so that the roller body 71 can be rotated stably and the elevator The stability of the car is greatly improved.

In addition, the snap ring 80 is mounted on the fixing groove 77 formed on the roller body 71 to fix the bearing 73, and the fixing ring 90 is mounted on the shaft 30 to secure the bearing 73. ) and the buffer pad 40 are in close contact to prevent the roller part 70 from shaking.

That is, in the present invention, the roller part 70 absorbs noise and vibration generated when ascending and descending along the counterweight rail (R) and prevents it from being transmitted to the shaft 30, thereby further improving the riding comfort and stability of the elevator car. There is.

As described above, the guide roller for an elevator of the present invention has been described based on its application to the counterweight rail (R), but it can also be applied to the guide rail of an elevator car.

Although preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and may be used in the technical field to which the invention pertains without departing from the gist of the invention as claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

10: Fixing bracket
20: Vibration damping member
30: shaft
40: Buffer pad
50: fixing plate
60: fixing bolt
70: Roller unit
80: Snap ring
90: Fixing ring

Claims (7)

A fixing bracket (10) that is fixed to the upper and lower parts of an elevator car or a counterweight and has a pair of fixing bars (12) formed vertically to fix the roller portion (70);
A vibration damping member (20) mounted through a mounting hole (13) formed in the pair of fixtures (12);
A shaft (30) horizontally coupled to the vibration damping member (20);
A buffer pad 40 coupled to the shaft 30 and in close contact with both sides of the fixture 12 to cushion vibration transmitted from the shaft 30;
A fixing plate 50 in close contact with the outer surface of the shaft 30 and the buffer pad 40;
A fixing bolt 60 fastened from the outside of the fixing plate 50 to the inside of the shaft 30;
A roller portion 70 that is fixed to the shaft 30 and rotates and attenuates vibration and noise as the rubber elastic body 72 moves up and down along the counterweight rail (R);
A snap ring 80 that secures the bearing 73 mounted on the inside of the roller unit 70;
A guide roller for an elevator, characterized in that a fixing ring 90 is mounted on the shaft 30 and is in close contact between the bearing 73 and the buffer pad 40 to prevent the roller part 70 from shaking. .
In claim 1,
The fixing bracket (10) is,
A fixing plate (11) fixed to the upper and lower parts of the elevator car or counterweight;
Fixing bars 12 formed on the upper part of the fixing plate 11 to be spaced apart at regular intervals;
A guide roller for an elevator, characterized in that it is provided with a mounting hole (13) that penetrates the fixture (12) and into which the vibration damping member (20) is mounted.
In claim 1,
The buffer pad 40 is,
A guide roller for an elevator, characterized in that the inner part close to the through hole formed in the central part is in close contact with both sides of the vibration damping member (20), and the edge part is in close contact with both sides of the fixture (12).
In claim 1,
When fixing the fixing plate 50, the inner part close to the hole formed in the central part is in close contact with the shaft 30, and the edge part is in close contact with the outer surface of the buffer pad 40 to prevent vibration and noise. Guide roller for elevators.
In claim 1,
The roller part 70 is,
Roller body (71);
A rubber elastic body (72) mounted on the outer peripheral surface of the roller body (71) to attenuate vibration transmitted from the counterweight rail (R);
A bearing 73 is installed on the inside of the roller body 71 and fixed to the outer peripheral surface of the shaft 30 to rotate the roller body 71,
A guide roller for an elevator, characterized in that the outer peripheral surface of the rubber elastic body (72) is further provided with a guide groove (74) to which the counterweight rail (R) is coupled.
In claim 5,
Both sides of the guide groove 74 are inclined at a certain angle, and the guide groove 74 smoothly rotates the roller portion 70 when ascending or descending along the counterweight rail (R). Guide roller for elevators.
In claim 5,
A mounting portion 75 formed inside the roller body 71 to which the bearing 73 is mounted;
a stopper 76 formed at one end of the mounting portion 75 and allowing one side of the bearing 73 to come into close contact with it;
A guide roller for an elevator, characterized in that it is further provided with a fixing groove (77) formed at the other end of the mounting portion (75) to which the snap ring (80) is fixed.

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