JPH0859106A - Landing error correction device for elevator - Google Patents

Abstract

PURPOSE: To provide such a landing error correction device for an elevator that automatically corrects landing level error while detecting the landing state of a cage without directly driving a drive device such as a hoist motor. CONSTITUTION: An elevator for raising/lowering a cage 1 by driving a pulley 3 is so formed that a rope 7 for suspending a cage 1 and a balance weight 2 is wound around a pulley 3 and at the same time diverted by the first diversion wheel 4. It is provided with the second diversion wheel 5, a transfer mechanism (a support bar 16 and a hydraulic jack 6) for transferring the rotational center of the second diversion wheel 5, a cage position detection part 11 provided on the cage, and a cage landing error correction means (a calculation processing part 12 and a hydraulic controller 13) for controlling the transfer mechanism based on a landing error correction value according to a position signal detected by the cage position detection part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator landing error correction device for correcting an elevator landing error.

[0002]

2. Description of the Related Art FIG. 8 is a block diagram showing an example of a conventional elevator. In FIG. 8, 1 is a car, 2 is a balance weight which is connected to the car 1 via a rope 7 in a slipping manner, 3
Is a sheave on which the rope 7 can be hung, 4 is a deflector for deflecting the rope 7, 8 is a landing device provided on the upper portion of the car 1, 9
Indicates a control device for controlling the operation of the elevator according to the operation signal from the landing device 8.

In the conventional elevator having the above structure, the rope 7 on which the car 1 and the counterweight 2 are suspended is wound around the sheave 3 and is deflected by the deflecting sheave 4, and the sheave 3 is driven. As a result, the car 1 is moved up and down. Further, in such an elevator, although the level is landed according to the signal from the landing device 8, at the time of landing, even if the level is "0", that is, there is no error in the landing level. Even if there is, the rope 7 may expand and contract due to load fluctuations in the car, resulting in a step. Therefore, the car floor level is set such that the control device 9 drives the hoisting motor for rotating the sheave 3 while the position signal is read by the control device 9 in response to the position signal of the position switch issued from the floor device 8. , Level error is corrected.

[0004]

In the conventional elevator having the above-mentioned structure, the level is landed according to the signal from the landing device 8. However, even when there is no level error at the time of landing. Rope 7 due to load fluctuation in the car, failure of control system, expansion / contraction of springs and expansion / contraction of rubber vibration isolator
May expand and contract to generate a step. In such a case, it is necessary to directly drive the hoisting motor that rotates the sheave 3 while reading the position signal of the position switch issued from the floor landing device 8. Therefore, electric energy was consumed to correct the level error.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and detects electrical conditions while detecting the landing condition of an elevator without directly driving a drive device such as a hoisting motor. It is an object of the present invention to obtain an elevator landing error correction device capable of automatically correcting a level error without consuming the above.

[0006]

In the elevator landing error correcting apparatus according to the present invention, a rope having a car and a counterweight suspended is wound around a sheave and is deflected by a deflector. In an elevator that raises and lowers the car by driving the car, a moving mechanism for moving the rotation center of the deflecting wheel, a car position detection unit provided on the car, and a car position detection unit detect the car position detection unit. Car landing error correction means for controlling the moving mechanism on the basis of a landing error correction value according to a position signal is provided.

Further, a plurality of the deflecting wheels are provided, and the moving mechanism is characterized in that the center of rotation of any one of the deflecting wheels is moved.

The deflector wheel is provided on the car side of the sheave.

As the moving mechanism, a support stand erected on a machine base and a support rod having one end rotatably supported on the support base and the deflecting wheel rotatably attached to the other end,
A hydraulic jack that is rotatably installed on the machine base and that rotates the deflecting wheel with one end of the support rod as a rotation center according to the expansion and contraction operation thereof.

Further, as the moving mechanism, a long hole type support bearing provided in a fixed member and a fixed bearing installed in a machine base are expanded and contracted along the long axis direction of the support bearing to rotate the deflecting wheel. A hydraulic jack for moving the center of motion is provided.

Further, as the moving mechanism, there are provided a trolley roller installed on a machine base for moving the deflector wheel, and a hydraulic jack fixedly installed on the machine base for moving the trolley roller in accordance with an expansion / contraction operation. It is characterized by that.

[0012]

In the elevator landing error correction apparatus according to the present invention, the car landing error correction means calculates a landing error correction value according to the position signal detected by the car position detection unit, and the correction value is calculated. By controlling the movement mechanism that moves the rotation center of the deflector based on the above, the rope is moved up and down to move the center of rotation of the deflector, and the car is pulled up and down accordingly. It is possible to correct the landing level error by automatically driving the hoisting motor and other drive devices, detecting the elevator landing status and consuming the electrical energy while automatically detecting the landing level error. Fix it.

Further, a plurality of the deflecting wheels are provided, and the center of rotation of any one of the deflecting wheels is moved by the moving mechanism to be used for correcting a landing error.

Further, by providing the deflecting wheel on the car side of the sheave, when correcting the error of the landing level, only the car side is changed without changing the counterweight side and the landing error is changed. Fix it.

As the moving mechanism, a support stand erected on a machine base, a support rod having one end rotatably supported on the support base and the deflection wheel rotatably attached to the other end, are supported.
The rotation center of the deflector wheel is moved by including a hydraulic jack that is rotatably installed on the machine table and that rotates the deflector wheel with one end of the support rod as the center of rotation in accordance with its expansion and contraction operation. Error of the landing level without directly activating the drive device such as the hoisting motor by driving the rope up or down and pulling up or down the car according to this. It is possible to automatically correct.

As the moving mechanism, a long hole type support bearing provided on a fixed member and a fixed bearing mounted on the machine base are expanded and contracted along the long axis direction of the support bearing so that By providing a hydraulic jack that moves the turning center, the turning center of the deflector is moved to push up or push down the rope, and the car is pulled up or pulled down to follow it, and the hoisting motor, etc. It is possible to automatically correct the error of the landing level without directly driving the driving device of (1) and without consuming electric energy.

Further, as the moving mechanism, there are provided a trolley roller installed on a machine base for moving the deflector wheel, and a hydraulic jack fixedly installed on the machine base for moving the trolley roller in accordance with expansion and contraction operation. By moving the center of rotation of the deflector, the rope is pushed up or down, and the car is pulled up or pulled down in accordance with this, without directly driving the drive device such as the hoisting motor. It is possible to automatically correct the error of the landing level without consuming the physical energy.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments. Example 1. 1 is an overall configuration diagram showing an elevator landing error correction device according to a first embodiment, and FIG. 2 is a partially enlarged view of FIG. 1, where FIG. 1A is a side view and FIG. Is a front view. 1 and 2, the same reference numerals as those in the conventional example shown in FIG. 8 indicate the same parts, 1 is a car, 2 is a balance weight connected to the car 1 via a rope 7 in a slip way, and 3 is a rope. A sheave on which 7 is hung, 4 is a deflector for deflecting the rope 7, 8 is a landing device provided on the upper portion of the car 1, and 9 is control for controlling the operation of the elevator according to an operation signal from the landing device 8. Shows the device.

As a new structure, 5 is provided so as to be rotatable around a support shaft 15 of a support 14 fixed on the machine base 10 as a fulcrum, and the sheave 3 and the deflector 4 as a first deflector are provided. It is a second deflecting wheel that presses the rope 7 suspended between the two from above, and is provided on a machine base 10 described later on the car 1 side of the sheave 3. Reference numeral 6 is a hydraulic jack having a structure for rotating the second deflecting wheel 5, 10 is a machine base of a hoisting machine, and the hydraulic jack 6 is rotatably installed on the machine base 10 and will be described later in connection with its expanding and contracting operation. The second deflecting wheel 4 is rotated with one end of the support rod as the center of rotation.

Reference numeral 11 denotes a car position detecting unit provided on the car 1, 12 denotes a calculation processing unit for calculating a landing error correction value according to a position signal detected by the car position detecting unit 11, and 13
Is a hydraulic control device for controlling the hydraulic jack 6, and the car position detection unit 11, the arithmetic processing unit 12, and the hydraulic control device 13 constitute a car landing error correction means. Reference numeral 16 is a support rod having one end rotatably supported by the support base 14 and the other end rotatably attached to the second deflecting wheel at the other end, and together with the support base 14 and the hydraulic jack 6, the second support bar 16 is provided.
A moving mechanism that moves the center of rotation of the deflecting wheel 5 is configured.

Next, the operation will be described with reference to FIG. Now, when the car 1 arrives at the landing position, the car position detection unit 11 sends out a position signal, and the landing error correction value corresponding to the signal is arithmetically processed by the arithmetic processing unit 12 to correct the landing error. A current according to the value is supplied to the hydraulic control device 13. The hydraulic control device 13 controls the hydraulic pressure to the hydraulic jack 6 according to the current value according to the landing error correction value to extend and retract the hydraulic jack 6. The second deflecting wheel 5 repeatedly moves up and down around the fulcrum of the support shaft 15 as the hydraulic jack 6 expands and contracts, and the rope 7 moves as the second deflecting wheel 5 moves up and down.
Is pushed down or pushed up. Then, following the push-down or push-up of the rope 7, the car 1 is pulled up or pulled down to correct the landing error. Therefore, the landing error is corrected by pulling up or down the rope 7, and this landing correction operation is performed from before the landing to during stopping and the next activation.

Therefore, according to the first embodiment, the rope 7
The landing error such as expansion and contraction is absorbed by the second deflecting wheel 5, and the electric energy consumption is reduced due to the mechanical correction, so that it is not necessary to drive the hoisting motor at the time of releveling unlike the conventional elevator.

Example 2. Next, FIGS. 3 (a) and 3 (b) relate to the second embodiment, and the vicinity of the second deflector wheel 5 and the hydraulic jack 6 corresponding to the first embodiment shown in FIGS. 2 (a) and 2 (b). FIG. In the first embodiment described above,
Although the center of rotation of the second deflecting wheel 5 is provided so as to rotate about the support shaft 15 as a fulcrum, in the second embodiment, a vertically elongated hole provided on the top of the support base 14 as a fixing member. The second deflecting wheel 5 can be moved up and down by a support bearing 17 of a formula, and the second deflecting wheel 5 absorbs the landing error due to the expansion and contraction of the rope 7 as in the first embodiment. Is.

Example 3. Further, FIGS. 4A and 4B relate to the third embodiment and correspond to the first embodiment shown in FIGS. 2A and 2B in the vicinity of the first deflector wheel 4 and the hydraulic jack 6. FIG. In the third embodiment, the first deflecting wheel 4 which has been used conventionally is used in the same manner as the second deflecting wheel 5 of the first embodiment, and the rotation center of the first deflecting wheel 4 is used as a landing error correction value. Hydraulic jack 6 that expands and contracts according to
Thus, the support shaft 15 of the support base 14 is rotated about a fulcrum so that a landing error due to expansion and contraction of the rope 7 is absorbed by the first deflecting wheel 4.

Example 4. Further, FIGS. 5A and 5B relate to the fourth embodiment and correspond to the second embodiment shown in FIGS. 3A and 3B in the vicinity of the first deflector wheel 4 and the hydraulic jack 6. FIG. As the fourth embodiment, a conventionally used first deflector wheel 4 is used in the same manner as the second deflector wheel 5 of the second embodiment, and a support base 1 as a fixing member is used.
The rotation center of the first deflecting wheel 4 can be moved up and down by a vertically long hole type support bearing 17 provided at the top of No. 4, and in the same manner as the second embodiment, a landing error due to expansion and contraction of the rope 7 is prevented. The first deflecting wheel 4 absorbs it.

Example 5. Further, FIGS. 6A and 6B relate to the fifth embodiment, and a portion near the first deflector wheel 4 and the hydraulic jack 6 corresponding to the fourth embodiment shown in FIGS. 5A and 5B. FIG. In the fifth embodiment, the center of rotation of the first deflecting wheel 4 is laterally movable by a horizontally elongated support bearing 18 provided directly on the side surface of the machine base 10 as a fixing member. In the same manner as above, the first deflecting wheel 4 absorbs a landing error due to expansion and contraction of the rope 7.

Example 6. Further, FIGS. 7 (a) and 7 (b)
Is related to the sixth embodiment and corresponds to the fifth embodiment shown in FIGS. 5 (a) and 5 (b).
It is a partially enlarged view of the vicinity. In the sixth embodiment, the carriage roller 19 is unitized and fixedly mounted on the machine base 10, the first deflecting wheel 4 is mounted, and the carriage roller 19 is connected to the tip portion of the hydraulic jack 6 to form a hydraulic jack. 6, the carriage roller 19 can be moved laterally, and the rotation center of the first deflecting wheel 4 can be moved laterally. The floor error is absorbed by the first deflecting wheel 4.

[0028]

As described above, according to the present invention, the car landing error correction means calculates a landing error correction value in accordance with the position signal detected by the car position detecting section and uses it as the correction value. Based on this, by controlling the movement mechanism that moves the center of rotation of the deflector, the center of rotation of the deflector is moved to push the rope up or down, and the car is pulled up or down accordingly. The flooring error can be corrected, and the flooring level error is automatically corrected without directly driving the drive device such as the hoisting motor and detecting the elevator flooring condition and consuming electric energy. Therefore, control is easy and there is an energy saving effect.

Further, a plurality of the deflecting wheels are provided, and the center of rotation of any one of the deflecting wheels is moved by the moving mechanism to be used for correcting the landing error, and the error of the landing level is automatically corrected. There is an effect that can be done.

Further, by providing the deflecting wheel on the car side of the sheave, when correcting the error of the landing level, only the car side is changed and the landing error is changed without changing the counterweight side. The effect is that it can be modified.

As the moving mechanism, a support stand erected on a machine base, a support rod having one end rotatably supported on the support base and the deflection wheel rotatably attached to the other end, are supported.
By providing a hydraulic jack that is rotatably installed on the machine base and that rotates the deflector wheel with one end of the support rod as the center of rotation in accordance with its expansion and contraction operation, a large driving force is obtained by the hydraulic jack. , Move the center of rotation of the deflector to push up or push down the rope, and follow this to pull up or pull down the car to generate electrical energy without directly driving a drive device such as a hoisting motor. There is an effect that the error of the landing level can be automatically corrected without consuming.

Further, as the moving mechanism, a support base having a long hole type support bearing provided in a fixed member and a machine base fixedly installed are expanded and contracted along the long axis direction of the support bearing. By providing a hydraulic jack that moves the center of rotation of the deflector, a large driving force is obtained by the hydraulic jack, and the center of rotation of the deflector is moved to push the rope up or down to follow it. There is an effect that the error of the landing level can be automatically corrected by raising or lowering the car without directly driving the drive device such as the hoisting motor and without consuming electric energy.

Further, as the moving mechanism, there are provided a trolley roller installed on a machine base for moving the deflecting wheel, and a hydraulic jack fixedly installed on the machine base for moving the trolley roller in accordance with expansion and contraction operation. As a result, a large driving force from the hydraulic jack is obtained, the center of rotation of the deflector is moved to push up or push down the rope, and the car is pulled up or pulled down in accordance with this to drive the hoisting motor, etc. There is an effect that the error of the landing level can be automatically corrected without directly driving the driving device and without consuming electric energy.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an elevator landing error correction device according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged side view showing a moving mechanism portion of the second deflecting wheel of FIG.

FIG. 3 is a partially enlarged side view showing a moving mechanism portion of a second deflector wheel according to a second embodiment of the present invention.

FIG. 4 is a partially enlarged side view showing a moving mechanism portion of a first deflector wheel according to a third embodiment of the present invention.

FIG. 5 is a partially enlarged side view showing a moving mechanism portion of the first deflector wheel according to the fourth embodiment of the present invention.

FIG. 6 is a partially enlarged side view showing a moving mechanism portion of a first deflector wheel according to a fifth embodiment of the present invention.

FIG. 7 is a partially enlarged side view showing a moving mechanism portion of a first deflector wheel according to Embodiment 6 of the present invention.

FIG. 8 is an overall configuration diagram showing a conventional elevator.

[Explanation of symbols]

1 car, 2 balancing weights, 3 sheaves, 4 first deflecting wheels, 5 second deflecting wheels, 6 hydraulic jacks, 7 ropes, 10 machine bases, 11 car position detection units, 12 arithmetic processing units, 13 hydraulic control devices , 14 support bases, 15 support shafts, 16 support rods, 17 longitudinal support bearings, 18
Horizontal bearing support bearings, 19 truck rollers.

Claims (6)

[Claims] 1. An elevator in which a rope, on which a car and a counterweight are suspended, is wound around a sheave and is deflected by a deflector, and the car is raised and lowered by driving the sheave. A moving mechanism for moving the rotation center, a car position detecting section provided on the car, and the moving mechanism based on a landing error correction value according to a position signal detected by the car position detecting section. An elevator landing error correction device comprising: a car floor error correcting means for controlling. 2. The elevator landing error correction apparatus according to claim 1, further comprising a plurality of the deflecting wheels, wherein the moving mechanism moves a rotation center of any one of the deflecting wheels. 3. The elevator landing error correction device according to claim 1, wherein the deflecting wheel is provided closer to the car than the sheave. 4. The moving mechanism comprises: a support stand erected on a machine stand; one end rotatably supported by the support stand; and a support rod rotatably attached at the other end to the deflector. 4. A hydraulic jack, which is rotatably installed on a machine base and rotates the deflecting wheel with one end of the support rod as a rotation center when the machine expands and contracts. An elevator landing error correction device according to claim 1. 5. The moving mechanism is provided with a long hole type support bearing provided on a fixed member, and is fixedly installed on a machine base so as to expand and contract along the long axis direction of the support bearing to rotate the deflecting wheel. The elevator landing error correction device according to any one of claims 1 to 3, further comprising a hydraulic jack for moving a moving center. 6. The moving mechanism comprises a carriage roller installed on a machine base for moving the deflector wheel, and a hydraulic jack fixedly installed on the machine base for moving the carriage roller with expansion and contraction. Claim 1 characterized by the above.
4. The elevator landing error correction device according to any one of 3 to 3.