JP2760673B2 - Elevator roller guide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

 [Object of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator roller guide.

[0002]

2. Description of the Related Art Conventionally, in a roller guide provided in an elevator car, in order to reduce a shock received by the car due to a bending or a step of a guide rail of a hoistway,
The roller abutted on the guide rail is resiliently pressed by a coil spring to buffer the roller. However, when the position of the load in the car is shifted from the center of the car, that is, the position of the rope that suspends the car, or when the balance of the tail cord and compensating rope that is usually attached to the lower end of the car is not at the center of the car, There was a danger that the car would contact equipment in the hoistway (a landing door, a landing threshold, etc.) during traveling. Therefore, in order to prevent this, conventionally a stopper for suppressing the operation of the roller guide is provided,
When the basket tilted more than a certain amount, the basket did not tilt any more.

[0003]

In a conventional roller guide for an elevator, when the inclination of the car is large and the inclination of the car is restricted by a stopper, the cushioning effect of the coil spring is lost and the roller guide is bent or stepped. The vibration was transmitted directly to the car, which significantly reduced the ride comfort of the elevator. Further, if the spring constant of the coil spring is increased in advance in order to prevent the car from coming into contact with the hoistway equipment, there is a problem that the buffer effect, which is the aim of the coil spring, is reduced. Therefore, an object of the present invention is to have a buffering effect even when the inclination of the car becomes large,
An object of the present invention is to provide an elevator roller guide that can always maintain an optimal buffer effect. [Configuration of the Invention]

[0004]

SUMMARY OF THE INVENTION The present invention is provided in an elevator car to achieve the above object,
A lever which is arranged side by side with a guide rail for guiding the car therebetween and has one end pivotally connected thereto, and three sides of the guide rail which is arranged on the other end of each lever and located between the levers, abutting roller, an elastic member for pressing the rollers towards the guide rail, detecting means for detecting the vertical direction of inclination with respect to the guide rails of the car from the operation of the lever, Ri by the detection means detects Is
The contact pressure with the guide rail increases
So that the contact pressure is further increased with respect to the roller.
A roller guide for an elevator having a pressing control means for controlling a pressing force of the elastic body .

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An elevator roller guide according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of the roller guide of the present invention.

Normally, four roller guides are mounted on the upper and lower parts of the elevator car, four in total. Here, one roller guide mounted on the upper part of the elevator car is taken up to explain the configuration. . FIG. 1A is a front view of the roller guide, and FIG. 1B is a top view of the roller guide.

The roller guide of the elevator is provided with a roller guide base 2 mounted on the upper side of the elevator car 1, and is arranged in parallel with the roller guide base 2 at intervals and has one end pivotally connected to a lever 3a, 3b, 3c is provided.
Also, the levers 3a, 3b, 3c are disposed on the levers 3a, 3b, 3c.
Rollers 5a, 5b, 5c are provided to abut on the guide rail 4 located between b, 3c. Also, levers 3a, 3
support shaft 6 inserted through a hole provided at an intermediate position between b and 3c
a, 6b, 6c and springs 7a, which are wound around the support shafts 6a, 6b, 6c with a gap, and elastically press the rollers 5a, 5b, 5c toward the guide rail 4 via the levers 3a, 3b, 3c. 7b and 7c are provided. Springs 7a, 7
There are provided pulse motors 8a, 8b, 8c for adjusting the pressure for pressing the rollers 5a, 5b, 5c of b, 7c. A support base 9a provided on the roller guide base 2,
Photoelectric sensors 10a, 10b and 10c are provided at the tips of 9b and 9c and detect the inclination of the car.
Stoppers 11a, 11b, and 11c are provided to limit the inclination of the elevator car 1 when the inclination of the elevator car 1 exceeds a certain level. Information on the tilt of the car 1 detected by the photoelectric sensors 10a, 10b, and 10c is input, and pulse motors 8a,
A pulse motor controller 12 for controlling the driving of 8b and 8c is provided. Further, fixing stands 13a, 13 for fixing the support shafts 6a, 6b, 6c and the stoppers 11a, 11b, 11c.
b is provided. Here, the aforementioned photoelectric sensor 10a,
10b and 10c have a light emitting part and a light receiving part, and irradiate light from the light emitting part to the levers-3a, 3b and 3c. When the reflected light from the levers 3a, 3b, 3c is received, an ON signal is sent to the pulse motor controller 12, and when no reflected light is received, an OFF signal is sent to the pulse motor controller 12. Configuration. FIG. 2 is a diagram showing a mounting configuration of the pulse motor 8.

An external thread is formed on the motor shaft 14 of the pulse motor 8. A female screw portion is formed at the end of the support shaft 6 on the side of the pulse motor 8, and the motor shaft 14 and the support shaft 6 are directly connected via the screw portion. Next, the operation of the roller guide of the present invention will be described.

First, when the elevator car 1 starts running, the rollers 5a, 5b, 5
c moves linearly in the vertical direction while rotating. if,
If the roller guide 4 is bent and a step occurs, the roller 5
The springs 7a, 7b, 7c for resiliently attenuating a, 5b, 5c buffer. Further, when a predetermined inclination occurs in the car due to the unbalanced load in the car, the photoelectric sensors 10a, 10b, 10c
, And information on the detected inclination is sent to the pulse motor controller 12 as a signal. The pulse motor controller 12 includes photoelectric sensors 10a, 10b,
Pulse motor 8 based on the car tilt signal from 10c
a, 8b, 8c. The pulse motors 8a, 8b, 8c are driven based on a drive command from the pulse motor controller 12, and adjust the pressing of the springs 7a, 7b, 7c.

Here, the operation of one roller guide has been described, but as described above, the roller guide is
The pulse motor controller 12 receives two pieces of tilt information from all the photoelectric sensors 10 and controls all the pulse motors 8 because two are provided at the upper part and the lower part at the same time.

For example, photoelectric sensors 10a, 10b, 10
It is assumed that c receives the reflected light from the levers 3a, 3b, 3c at the light receiving section, and always transmits an ON signal to the pulse motor controller 12 when the car is in a normal state. When the upper part of the car tilts more than a certain amount in the direction b, the lever 3a similarly tilts in the direction b and the photoelectric sensor 10
a is in a state where it does not receive the reflected light from the lever 3a,
An off signal is input to the pulse motor controller 12. When the OFF signal of the photoelectric sensor 10a is input, the pulse motor controller 12 outputs a command to weaken the force of the spring 7a to the pulse motor 8a, and outputs the command to the pulse motor 8b.
The command which strengthens the power of is output. At the same time pulse motor 8
A command to decrease the force of the spring 7 and a command to increase the force of the spring 7 are output to the pulse motors 8 provided on the respective roller guides corresponding to a and 8b.

That is, when the roller guide is installed as shown in FIG. 3, when the inclination of the car in the direction A is detected at the upper part of the car, one of the roller guides installed at four places is detected. The photoelectric sensor 10 detects the signal, and the pulse motor controller 12 controls the roller 5 based on the detected signal.
The drive of the pulse motor 8 is controlled so as to decrease the strength of the spring 7 for pressing the X and increase the strength of the spring 7 for pressing the roller 5Y. If the inclination of the car in the direction C is detected at the upper part of the car, the control is performed so that the strength of the spring 7 for pressing the roller 5V is increased and the strength of the spring 7 for pressing the roller 5W is reduced. Is done. The operation opposite to that described above is performed for the inclinations in the B direction and the D direction. In short, roller 5
The roller X and the roller 5Y and the roller 5V and the roller 5W are controlled to perform a pair of operations, respectively.

In the present embodiment, the inclination of the car is detected by using the photoelectric sensor 10, but a magnetic sensor or the like may be used. Although the pulse motor 9 is used to change the pressing force of the spring 7, the same effect can be obtained by using a hydraulic actuator or the like. Further, although the location where the pulse motor controller 12 is installed is not particularly described, it is preferable to install it on a car or in an elevator machine room. Further, in this embodiment, the photoelectric sensor is provided for all the roller guides, but the same effect can be obtained by providing the photoelectric sensor only for the roller guide on the upper part of the car.

As described above, the pressing force of the spring 7 can be changed according to the eccentric load due to the loading in the car 1 and the inclination of the car caused by the imbalance due to the tail cord or compensating rope attached to the car 1. The lever 3 is prevented from coming into contact with the stopper 11, and the buffering effect of the spring 7 is always maintained.

[0015]

As described above, according to the present invention, it is possible to provide an elevator roller guide which has a buffering effect even when the inclination of the car becomes large, and which can always maintain an optimal buffering effect.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a roller guide of an elevator according to an embodiment of the present invention.

FIG. 2 is a detailed view of the mounting of the pulse motor of the roller guide of the elevator according to one embodiment of the present invention.

FIG. 3 is a layout view of a roller guide of an elevator according to one embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Elevator car, 2 ... Roller guide base, 3 ... Lever, 4 ... Guide rail, 5 ... Roller, 7 ... Spring, 8 ... Pulse motor, 10 ... Photoelectric sensor.

Claims (1)

(57) [Claims] 1. A provided on the car of the elevator, the car
Levers, which are arranged side by side with a guide rail for guiding the guide rails and one end of which is pivotally connected, and which comes into contact with three sides of the guide rail which is disposed on the other end of each lever and is located between the levers a roller, and an elastic body for pressing the rollers on the guide rail, detecting means for detecting the vertical direction of inclination with respect to the guide rails of the car from the operation of the lever, Ri is detected by the detection means To tilt
Therefore, the contact pressure with the guide rail increases,
Roller to increase the contact pressure further.
A roller guide for an elevator having a pressing control means for controlling a pressing force of a body .