JP2878902B2 - Elevator guidance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator guide device for guiding and supporting a car, which rises and lowers in a hoistway of an elevator for a high-rise building, along guide rails, and more particularly to left and right guides provided in the hoistway. The present invention relates to a roller type elevator guide device that guides and supports a car by rolling a plurality of guide rollers against a rail in a pressed state.

[0002]

2. Description of the Related Art For example, a hoisting elevator generally has a configuration shown in FIG.
It is configured as shown in FIG. That is, the car 2 and the counterweight 3 are suspended by the hoisting rope 4 in the hoistway 1 constructed in the building. This hoisting rope 4 is the hoistway 1
Is wound around a hoisting sheave of a hoisting machine 5 installed in the upper machine room of
To move the car 2 and the counterweight 3 relatively up and down.

In such an elevator, a car 2
The counterweight 3 is a guide device 7 that moves up and down along a pair of left and right guide rails 6 (guide rails for counterweights are not shown) provided in the hoistway 1.
It has. 7 and 8, the elevator guide device 7 is installed at each of the upper, lower, left and right portions of the car frame 2a as shown in FIGS. In many cases, the car 2 is guided and supported in the forward and backward and left and right directions by rolling and contacting in a pressed state.

The details of the roller type elevator guide device 7 are as shown in FIGS. 9 to 11, in which a fixed frame 11 is erected on a mounting base 10 and three brackets 12 are erected near this. A swing lever 14 is provided on the upper portion of each bracket 12 via a support shaft 13, and each of the swing levers 14 is provided with a guide roller 16 A, 1 via a roller shaft 15.
6B and 16C are rotatably mounted. The three guide rollers 16A, 16B, 16C are shown in FIG.
Are arranged separately in three directions as shown in FIG. In other words, the two guide rollers 16A and 16B are opposed to each other in the front-rear direction indicated by the arrow X and rolled on both side surfaces of the guide rail 6, and
The remaining one guide roller 16C is disposed so as to roll on the top surface of the guide rail 6 in the left-right direction (rail gauge direction) indicated by the arrow Y.

Further, the rod 1 is moved from the fixed frame 11
7 are protruded, and springs 18 are respectively provided on the guide rails 16. The guide rollers 16 A, 16 B, and 16 C are constantly pressed against the guide rail 6 via the respective swing levers 14 by this urging force, so that they come into rolling contact with each other. I have. Note that reference numeral 19 shown in FIG. 9 is an attenuator.

A pair of front and rear guide rollers 16A and 16B of the elevator guide device 7 having such a structure guide and support the car 2 in the front-rear direction (X direction), and the guide rollers 16C support the left and right directions (Y Direction).

Here, during the normal running operation of the elevator, the excitation source that causes the car 2 to vibrate and impair the ride comfort of passengers includes vibration transmitted from the hoisting machine 5 to the hoisting rope 4. And lateral vibration caused by bending of the left and right guide rails 6 and the like. The vibration transmitted from the hoisting machine 5 to the hoisting rope 4 has a considerable damping effect due to the vibration damping member 20 such as rubber interposed between the car frame 2a and the bottom of the car main body 2b. I have.

On the other hand, with regard to the lateral vibration of the car 2 caused by the bending of the guide rail 6, the guide rollers 16A to 16C of the elevator guide device 7 are forcibly displaced from the guide rail 6 back and forth and left and right. However, in order to prevent the vibration acceleration due to the forced displacement from being transmitted to the car 2 as it is, the spring 18 and the attenuator 19 of the swing lever 14 supporting each of the guide rollers 16A to 16C generate the vibration. The acceleration is buffered.

[0009]

However, in the above-described conventional elevator guide device 7, as shown in FIG. 11, guide rollers 16A to 16C arranged in three directions are provided.
Due to the friction between the outer peripheral surface and the surface of the guide rail 6, each roller has a supporting rigidity in the axial direction (thrust direction) of each roller. In particular, one of the guide rollers 16A and 16B for guiding and supporting the car 2 in the front-rear direction (X direction) receives an eccentric load in the front-rear direction of the car 2 and generates a large frictional force with the side surface of the guide rail 6. If the guide roller does not slide against the side surface of the guide rail 6 even when the guide roller receives the forced displacement in the left-right direction, the frictional force is equal to the high bending rigidity of the guide roller itself in the axial direction, and the car A support rigidity higher than the spring constant of the guide roller 16C that guides and supports the car 2 in the left-right direction (Y direction) is generated, and this becomes a vibration force that causes the car 2 to vibrate abnormally.

That is, the frictional force of the guide roller in the axial direction is greatly affected by the eccentric load of the car 2, and the guide rail 6
The guide rail 6 is greatly affected by the state of the surface thereof, and varies discontinuously depending on the location. For this reason, the front and rear guide rollers 16 are applied to the car 2 which is moving up and down while gently vibrating in the left and right direction (Y direction) due to, for example, bending of the guide rail 6.
When the frictional force in the roller axis direction of A and 16B acts discontinuously to generate high support stiffness, a large deceleration (excitation force in the opposite direction) is given to the gradual vibration of the car 2 in the left-right direction. , Causing rolling that is unpleasant for passengers.

The unpleasant roll caused by the support stiffness of the guide roller due to the frictional force in the axial direction increases as the frictional force increases and increases as the operating speed of the car 2 increases. The ride feels worse.

The present invention has been made in view of the above circumstances, and an object of the present invention is to further reduce the occurrence of uncomfortable rolling of a car due to support rigidity due to frictional force of an axial direction of a guide roller, thereby further improving riding. An object of the present invention is to provide an elevator guide device that is effective for realizing a comfortable elevator.

[0013]

According to a first aspect of the present invention, there is provided an elevator guide apparatus including a plurality of guide rails for guiding and supporting a car on guide rails provided in an elevator shaft. A roller tilting support mechanism is provided for rolling the guide roller in a pressed state, and tilting and rolling the guide roller receiving the eccentric load of the car with respect to the surface of the guide rail, and the guide rail in a state where the guide roller is tilted. The material of the surface portion that is in contact with the guide rail is a synthetic resin material having a lower friction coefficient with respect to the metal surface than the material of the main surface portion that is in contact with the side surface of the guide rail in a normal state.

In the elevator guide device having such a configuration, when the guide roller receives an eccentric load of the car, the guide roller is tilted via the roller tilting support mechanism, and tilts with respect to the surface of the guide rail, so that an ordinary guide rail is tilted. In this state, the rolling contact is made at the surface portion made of a synthetic resin material having a lower friction coefficient to the metal surface than the material of the main surface portion rolling at the side surface of the guide rail. As a result, the guide roller reduces the frictional force in the axial direction, slides with respect to the guide rail with the forced displacement in the axial direction, does not generate high support rigidity in the axial direction, and generates an unpleasant roll of the car. Can be suppressed.

[0015]

[0016]

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the elevator guide device according to the present invention will be described below with reference to FIGS. In the drawings, the same components as those shown in FIGS. 9 to 11 are denoted by the same reference numerals to simplify the description, and are the same as those shown in FIGS. 7 and 8 except for the elevator guide device. It is not shown in the figure.

First, the elevator guide device shown in FIGS. 1 and 2 is installed at each of four upper, lower, left and right portions of a car frame 2a of the car 2 in the same manner as shown in FIGS. Is guided and supported along the left and right guide rails 6.

Each of the components has three guide rollers 16A, 16B and 16C as in the prior art, and these guide rollers 16A, 16B and 16C are arranged separately in three directions as shown in FIG. ing. That is, the two guide rollers 16A and 16B are opposed to each other in the front-rear direction indicated by the arrow X and rolled on both side surfaces of the guide rail 6, and the remaining one guide roller 16C is moved in the left-right direction (rail gauge direction) indicated by the arrow Y. And is arranged so as to be in contact with the top surface of the guide rail 6 toward.

These three guide rollers 16A, 16
Of the B and 16C, one guide roller 16C facing in the left-right direction (Y direction) is attached as in the related art.
That is, a bracket 12 is erected on the mounting base 10, and a swing lever 14 is mounted on the upper portion of the bracket 12 via a support shaft 13 so as to be able to swing in the left-right direction.
The guide roller 16C is rotatably mounted via the. In addition, a fixed frame 11 is erected on the mounting base 10,
A rod 17 projecting from this is projected so as to penetrate the swinging lever 14, and a spring 18 is provided on the rod 17.
Are constantly pressed against the top surface of the guide rail 6 to be in rolling contact with the guide rail 6.

Here, the three guide rollers 16A,
Of the guide rollers 16A and 16B, two guide rollers 16A and 16B facing each other are attached and supported by a roller tilting support mechanism 21, respectively. That is, the roller tilting support mechanism 21 includes an inverted L-shaped bracket 22 erected on the mounting base 10, and a support shaft 23 vertically penetrating the bent upper portion of the bracket 22 and vertically mounted. A U-shaped swing lever 24 fitted to the upper and lower portions of the support shaft 23 and swingably mounted on a horizontal plane about the support shaft (vertical axis) 23; A roller shaft 25 protruding horizontally and rotatably mounting and supporting the guide rollers 16A (16B); a rod 27 protruding from the fixed frame 11 so as to extend horizontally through a swing lever 24; And a spring 28 which is attached to the front end of the arm and constantly biases the swing lever 24 toward the guide rail. A rubber bush 29 is attached to a rotating portion of the swing lever 24 fitted on the upper and lower portions of the support shaft 23 in consideration of a radial force.

The front and rear guide rollers 16A, 16B are provided opposite to each other in the front-rear direction indicated by the arrow X with the guide rail 6 interposed therebetween through the roller tilting support mechanism 21, and swing by the urging force of the spring 28 of the rod 27. When the front and rear guide rollers 16A and 16B are constantly pressed against both side surfaces of the guide rail 6 via the lever 24, the guide rollers 16A and 16B are brought into rolling contact with each other. Guide roller 16A on the side receiving the load
As shown in FIG. 3, the swing lever 24 supporting the (16B) swings horizontally around the support shaft (vertical axis) 23 to tilt the guide roller 16a (16B) with respect to the side surface of the guide rail 6. So that they can be rolled over.

The guide rollers 16A, 1
6B has a main surface portion M which comes into contact with the side surface of the guide rail 6 in a normal state, and an inclined surface portion N which comes into contact with the guide rail 6 in front of the guide rail 6 and tilts and comes into contact with the guide rail when tilted as described above. The surface portion M is made of a normal rubber material as in the related art, and the inclined surface portion N is made of a material such as a synthetic resin having a lower coefficient of friction with respect to a metal surface than the normal rubber material.

With the elevator guide device having such a configuration, if the longitudinal load of the car 2 in the front-rear direction is applied to one of the front and rear guide rollers 16A (16B) during the elevating operation,
The guide roller 16A (16B) is tilted via the roller tilting support mechanism 21, tilts with respect to the side surface of the guide rail 6, and comes into rolling contact with an inclined surface portion N having a low friction coefficient.
Thus, the guide roller 16A (1
6B), the frictional force in the axial direction is reduced.
6A (16B) slides with respect to the side surface of the guide rail 6 with the forced displacement in the axial direction (Y direction), does not generate high support rigidity (excitation force) in the axial direction, and causes uncomfortable left and right sides of the car. The occurrence of shaking can be suppressed.

In this embodiment, only the front and rear guide rollers 16A and 16B are supported by the roller tilt support mechanism 21 so as to be tiltable. However, the remaining one guide roller 16C may be similarly tiltably mounted and supported. It is.

Next, the second embodiment of the elevator guide device of the present invention will be described.
The embodiment will be described with reference to FIGS. First, as shown in FIG. 5, a fixing frame 11 is erected on a mounting base 10 in the same manner as in the prior art, and three brackets 12 are erected near the fixing frame 11, and a support shaft 13 is provided above each of the brackets 12. A swing lever 14 is provided, and each of these swing levers 14 is provided with a guide roller 16A, 16B, 16C via a roller shaft 15.
Are rotatably mounted. Of the three guide rollers 16A, 16B, and 16C, two guide rollers 16A and 16B that face each other are rolled and contact with both side surfaces of the guide rail 6, and the remaining one guide roller 16C is provided.
Are arranged so as to roll on the top surface of the guide rail 6 in the left-right direction (rail gauge direction).

In the same manner as in the prior art, rods 17 protrude from the fixed frame 11 in three directions, and springs 18 are respectively provided on the rods 17 and guide rollers 16A, 16B, 16C through the swing levers 14 by the urging forces. Are constantly pressed against the guide rails 6 and rolled to provide guidance support for the car 2 in the front-rear direction and the left-right direction.

Here, the guide rollers 16A, 16A
B and 16C are provided so as to be displaceable in the axial direction against an elastic body made of a rubber material thereof and smaller than a roller spring constant. That is, the guide rollers 16A to 16C are mounted on the roller shaft 15 via slide bearings 30 which can slide in the axial direction as shown in FIG. An elastic body 31 made of soft rubber for appropriately suppressing the sliding in the direction is attached, and both outer sides thereof are restricted in position by a collar 32 and a nut 33.

In the elevator guide device having such a configuration, even if the guide rollers 16A to 16C receive the eccentric load of the car 2 and the frictional force between the guide rollers 16A and 16C and the surface of the guide rail 6 increases, the guide rollers 16A to 16C may be used. 16C can be displaced in the axial direction together with the slide bearing 30 against the elastic body 31 smaller than the spring constant of the guide roller, so that it does not generate high support rigidity (excitation force) against the forced displacement in the axial direction. And the occurrence of uncomfortable rolling of the car can be suppressed.

FIG. 6 shows a third embodiment of the elevator guide device according to the present invention. In the second embodiment, the slide bearing 30 and the elastic body 31 are provided on the roller shaft 15. Alternatively, in this embodiment, the swing lever 14
Similarly, a slide bearing (not shown) slidable in the axial direction is provided on the support shaft 13 as described above, and elastic members 31 are provided at both ends of the bearing, and the guide roller is moved in the axial direction together with the swing lever 14 thereof. It is a configuration that allows displacement. In this embodiment, the same operation and effect as those of the second embodiment can be obtained.

[0031]

As described above, the elevator guide apparatus of the present invention can reduce the occurrence of uncomfortable rolling of the car due to the support stiffness of the guide rollers due to the frictional force in the axial direction. This is effective for realizing a comfortable elevator.

[Brief description of the drawings]

FIG. 1 is a partially sectional plan view showing a first embodiment of an elevator guide device of the present invention.

FIG. 2 is a front view of the front guide roller and the roller tilting support mechanism of the embodiment.

FIG. 3 is a partially sectional plan view showing an operation state of the front guide roller and the roller tilting support mechanism in the same.

FIG. 4 is a partially sectional plan view of a roller shaft showing a second embodiment of the elevator guide device of the present invention.

FIG. 5 is a front view of the elevator guide device of the embodiment.

FIG. 6 is a front view showing a third embodiment of the elevator guide device of the present invention.

FIG. 7 is a schematic diagram showing the entire configuration of a conventional general hoisting elevator.

FIG. 8 is a front view showing the relationship between the elevator and the conventional guide-equipped car and guide rail.

FIG. 9 is a side view of the conventional elevator guide device.

FIG. 10 is a front view of the conventional elevator guide device.

FIG. 11 is a plan view showing the positional relationship between three guide rollers and guide rails of the conventional elevator guide device.

[Explanation of symbols]

1 ... hoistway, 2 ... car, 6 ... guide rail, 15 ...
Roller shaft, 16A, 16B, 16C ... guide roller, 2
1-roller tilting support mechanism, N: surface part with low coefficient of friction, 3
0: slide bearing, 31: elastic body.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B66B 1/00-19/06

Claims (1)

(57) [Claims] An elevator guide device for guiding and supporting a car by pressing a plurality of guide rollers against a guide rail provided in an elevator shaft of the elevator, thereby receiving an eccentric load of the car. A roller tilting support mechanism that tilts and rolls the guide roller against the surface of the guide rail is provided, and the material of the surface that rolls against the guide rail when the guide roller is tilted is applied to the side surface of the guide rail in a normal state. An elevator guide device comprising a synthetic resin material having a lower coefficient of friction with respect to a metal surface than a material of a main surface portion to be rolled.