KR20030079996A - Load detection device and control method therefor, and elevator device - Google Patents

Abstract

The present invention is a load detection device having a sensor 32 for detecting the rotation angle of the rotating body 35 to rotate in response to the load fluctuation, the state of the wire (18, 40) in accordance with the detection value of the sensor 32 To judge. This makes it possible to reliably recognize the breakage of the wires 18 and 40, thereby avoiding the burden on the elevator apparatus caused by elevating the ride car to an overload state.

Description

LOAD DETECTION DEVICE AND CONTROL METHOD THEREFOR, AND ELEVATOR DEVICE}

8 and 9, a load detection device of a conventional elevator apparatus will be described. 8 is a schematic diagram showing a conventional load detection device. In Fig. 8, 1 is a base installed in a hoistway or a machine room, 3 is a plurality of shake rods that pass through the base 1 and supports one end of a towing rope that suspends a car, etc. Spring seat installed on the upper side, 7 is a nut for determining the length of use of the shuffle spring, 8 is a nut for fixing the trolley, 10 is a plurality of shocks to buffer the fluctuation of the load on the plurality of shake rods (3) Spring, 12 is a plurality of pulleys that are supported on the shake rod (3) and at the same time support the moving car, 13 is a plurality of pulleys that interlock with the up and down displacement of the shake rod (3), 15 is a frame for supporting the load detection device, 16 A plurality of fixed pulleys which are supported by the silver frame 15 and at the same time the operating side wires are wound; 18 is an operating side wire whose one end is supported by the detection pulley while the other end is supported by the fixing member through the movable pulley and the fixed pulley; Rods as members Screw, 22 is a nut for positioning the rod screw 20, 30 is a support shaft fixed to the frame 15, 32 is installed on the detection pulley and a sensor for detecting the rotation angle of the detection pulley, 35 is the operating side The detection pulley as a rotating body which rotates in conjunction with the movement of the wire 18 and the tension-side wire, 35a is fitted with the cutout portion provided in the detection pulley 35, 37 is fitted with the cutout portion 35a, and at the same time, the operation side wire 18 And a fixed bracket for supporting the tension side wire, 40 is a tension side wire supported at one end of the fixed bracket 37 and the other end is supported by the tension spring, and 42 is a rotational force in the load direction to the detection pulley 35. The tension spring as a rotational force supply part is shown.

Here, the rope fixing part of the elevator apparatus is comprised by the shuck rod 3, the shuck spring 10, the spring seat 5, the nut 7, the base 1, etc. The rope fixing part is installed in the hoistway or machine room. And the unshown towing rope supported by the lower end of the shackle rod 3 suspends the unshown ride car and counterweight in a hoistway, and raises a ride car and a counterweight in the opposite direction by the drive of a winch.

Meanwhile, the pulley 13, the pulley 12, the fixed pulley 16, the detection pulley 35, the sensor 32, the operation side wire 18, the tension side wire 40, the tension spring 42 and the like. The load detection device is constructed.

The load detection device operates as follows.

First, the operation side wire 18 is wound around the many pulleys 13 and the many fixed pulleys 16 alternately. And the rotational force which rotates the operation side wire 18 and the detection pulley 35 clockwise in the figure is given to the detection pulley 35. As shown in FIG.

On the other hand, the tension-side wire 40 and the tension spring 42 give a rotational force for rotating the detection pulley 35 in the counterclockwise direction (no load direction).

This causes the tension on the actuation side wire 18. In addition, the position of the sensor 32 shown in FIG. 8 shows the case where the load in a ride car is a reference | standard state.

In addition, when the load in the ride car is heavier than the reference state, the shake rod 3 moves downward from the position shown in FIG. 8 by pressing the shake spring 10.

As the shake rod 3 moves, the position of the pulley 13 and the pulley 12 also moves downward.

This causes the working side wire 18 to rotate the detection pulley 35 clockwise in the figure. At this time, the movement amount of the operation side wire 18 corresponds to twice the movement amount of the shake rod 3, and the rotation angle of the detection pulley 35 corresponds to the movement amount of the operation side wire 18.

At this time, the detection pulley 35 and the sensor 32 fixed to the extraction pulley 35 rotate in a clockwise direction about the support shaft 30. Then, the sensor 32 detects the rotation angle of the detection pulley 35 and detects the load in the ride car from the detected value.

Here, the sensor 32 is an inclination sensor (price sensor), for example, and detects the component of gravity acceleration and calculates the rotation angle of the detection pulley 35 from the value.

On the other hand, when the load in the ride car is lighter than the reference state, the shake rod 3 is pushed up by the spring force of the shake spring 10 and moved upward from the position of FIG.

As the shake rod 3 moves, the positions of the moving car 13 and the pulley 12 also move upwards. At this time, tension is applied to the actuation side wire 18 by the tension side wire 40 and the tension spring 42, and the detection pulley 35 rotates counterclockwise in the figure.

The sensor 32 detects the rotation angle of the detection pulley 35 and detects the load in the ride car from the detection amount.

The detection value regarding the load of the ride car detected as mentioned above is transmitted to the control part which controls the inverter in the drive power supply of a winch machine.

Then, in accordance with the detected value, the rotation speed of the hoist wound around the towing rope is finely adjusted. On the other hand, when the detected value for the load on the ride car exceeds a predetermined value, the vehicle is controlled to emit a warning sound informing that the ride car is underloaded.

9 is a schematic diagram showing another conventional load detection device.

The load detection device of FIG. 9 differs from the load detection device of FIG. 8 described above in that a weight 45 is used instead of the tension spring 42 for imparting tension to the actuation side wire 18. Specifically, one end of the tension-side wire 40 is connected to the fixing bracket 37 of the detection pulley 35 and the other end is connected to the weight 45.

The configuration of the other members and the operation of the load detection device are the same as those of the load detection device of FIG.

However, the above-described load detection device cannot load the load exceeding the allowable load in the riding car or control the load of the detection pulley 35 when the operation side wire 18 or the tension side wire 40 is broken. There was a problem that the detection pool 35 would be fair.

In detail, when the tension side wire 40 or the operation side wire 18 is broken, the tension is not applied to the operation side wire 18, and the detection pulley 35 is properly rotated in conjunction with the up and down of the shake rod 3. You will not.

For this reason, the load of a ride car cannot be detected properly, for example, even when the load of the ride car becomes overload, it cannot be detected, and the ride car is lifted in an overload state, and there is a possibility of breakage of the tow rope or the like.

In addition, only the counterclockwise rotation force by the tension spring 42 or the weight 45 and the tension side wire 40 is applied to the detection pulley 35 when the operation side wire 18 is broken.

For this reason, the detection pulley 35 may rotate overclockwise, and may cut and cut the electrical wiring (herness) of the sensor 32, etc. on the support shaft.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a highly reliable load detection device and control thereof without lifting the car in an overload state even when the wire wound around the detection pulley as the rotating body is broken and without damaging parts such as a sensor. A method and an elevator apparatus are aimed at providing.

The present invention relates to a load detection device for detecting a load applied to a ride car of an elevator device, a control method thereof, and an elevator device.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic diagram which shows the load detection apparatus in Embodiment 1 of this invention.

2 is a graph showing the relationship between the output value of the sensor and the rotation angle of the rotating body in the load detection device of FIG.

Figure 3 is a schematic diagram showing a state in which the operation side wire is broken in the load detection device of FIG.

4 is a schematic view showing a load detection device in accordance with a second exemplary embodiment of the present invention.

5 is a schematic view showing a state in which the tension side wire is broken in the load detection device of FIG.

FIG. 6 is an enlarged view showing a pulley and a pulley in the load detection device of FIG. 4. FIG.

FIG. 7 is a cross-sectional view showing a cross section taken along the X-X line of the pulley and pulley of FIG. 6; FIG.

8 is a schematic view showing a conventional load detection device.

9 is a schematic diagram showing another conventional load detection device.

(The best form to carry out invention)

In order to explain the present invention in more detail, it will be described according to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same or corresponding part in each figure, and the duplication description is abbreviate | omitted suitably or abbreviate | omitted.

1-3, the load detection apparatus which concerns on Embodiment 1 of this invention is demonstrated. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the load detection apparatus in Embodiment 1 of this invention. FIG. 2 is a graph showing a relationship between an output value of a sensor and a rotation angle of a rotating body in the load detection device of FIG. 1. 3 is a schematic diagram showing a state in which a working side wire is broken in the load detection device of FIG.

1 to 3, 1 is a Bayer, 3 is a plurality of shuffle rods, 5 is a spring seat, 7,8 is a nut, 10 is a plurality of shuffle springs, 12 is to support a moving car that is supported on the shake rod (3) A plurality of pulleys, 13 is a plurality of pulleys that interlock with the up-and-down displacement of the shake rod (3), 15 is a frame supporting the load detection device, 16 is a fixed pulley supported by the frame 15, 18 is one end pulley The operation side wire supported at the same time and the other end is supported by the fixed member through the pulley and the pulley, 20 is a rod screw as a fixing member, 22 is a nut for positioning the rod screw 20, 30 is the frame 15 A fixed shaft fixed to the sensor 32 is a sensor such as an inclination sensor which is installed at the detection pulley and detects the rotation angle of the detection pulley, 33 is a control unit that determines the state of the wire 18 according to the detection value of the sensor 32 Rotating body rotating in interlock with movement of the working side wire 18 and the tension side wire Detection pulley at 35, a cutout provided in the detection pulley 35, 37 is a fitting for supporting the operation side wire 18 and the tension-side wire while fitting to the cutout 35a, 40 is a fixed bracket A tension-side wire supported by 37 and supported by a tension spring, 42 is a tension spring as a rotational force supply for imparting a non-load rotational force to the detection pulley 35, and 50 is fixed to the frame 15. The fixing screw 52 indicates a regulating wire having one end supported by the fixing screw 50 and the other end supported by the tension spring 42.

Here, the rope fixing part is formed by the shuckling rod 3, the shuckling spring 10, the spring seat 5, the nut 7, the base 1, and the like. The rope fixing part is installed in the hoistway or machine room. The unshown towing rope supported on the lower end of the shuckrod 3 suspends the unshown ride car and counter weight in the hoistway to elevate the opposite direction of the ride car and counter weight by driving of a winch.

Meanwhile, the pulley 13, the pulley 12, the fixed pulley 16, the detection pulley 35, the sensor 32, the operation side wire 18, the tension side wire 40, the tension spring 42, The load detection device is constituted by the regulation wire 52, the fixing screw 50, and the like.

The operation | movement at the time of normal in the load detection apparatus comprised as mentioned above is demonstrated.

First, the operation side wire 18 is wound alternately around the pulley 13 and the fixed pulley 16. And the operation wire 18 has given the detection pulley 35 the rotational force which rotates the detection pulley 35 clockwise in a figure. On the other hand, the tension side wire 40 and the tension spring 42 give the rotational force which rotates the detection pulley 35 counterclockwise. As a result, a predetermined tension is applied to the actuation side wire 18.

And when the load in a riding car is heavier than a reference | standard state, the shackle rod 3 moves down the position of FIG. 1 by pressing the shackle spring 10 down. As the shake rod 3 moves, the positions of the pulley 13 and the pulley 12 also move downward. For this reason, the operation side wire 18 rotates the detection pulley 35 clockwise in the figure. Then, the sensor 32 detects the rotation angle of the detection pulley 35 and detects the load in the ride car from the detected value.

On the other hand, when the load in the ride car is lighter than the reference state, the shake rod 3 is pushed up by the spring force of the shake spring 10 and moves upward from the position of FIG. As the shake rod 3 moves, the positions of the pulley 13 and the pulley 12 also move upwards. As a result, the operation side wire 18 also moves, and the detection pulley 35 rotates counterclockwise in the drawing. The rotation angle of the detection pulley 35 is also detected by the sensor 32, and the load in the ride car is detected from the detected value.

The detected value for the load of the ride car detected as described above is transmitted to the control unit 33, and the information is then transmitted to the drive unit of the hoisting machine, the operation unit of the ride car, and the like.

Next, the operation | movement at the time of abnormality occurrence in the load detection apparatus of Embodiment 1 in FIG. 2, FIG. 3 is demonstrated. FIG. 2 is a graph showing a relationship between an output value of a sensor and a rotation angle of a rotating body in the load detection device of FIG. 1.

In FIG. 2, the horizontal axis represents the rotation angle of the detection pulley 35 in FIG. 1, and the vertical axis represents the detection value (output value) of the sensor 32 in FIG. 1.

And when the load of the ride car of an elevator apparatus is a reference | standard state (it is the state of FIG. 1), the rotation angle of a detection pulley will be 0 degrees (it is BL in drawing), and as shown in FIG. It becomes zero. On the other hand, when the load of the ride car is in the unloaded state, the detection pulley rotates in the counterclockwise direction in Fig. 1 so that the sensor becomes a detection value corresponding to NL in Fig. 2. When the load of the ride car is in the allowable load state, the detection pulley rotates clockwise in Fig. 1 so that the sensor becomes a detection value corresponding to FL in Fig. 2.

Here, the heavy load is the upper limit of the load capacity of a predetermined ride car from the structural point of view of the elevator apparatus and the legal regulations.

The load detection device according to the first embodiment determines the state of the operation side wire and the tension side wire in accordance with the detection value of the sensor. Specifically, the range of the rotation angle L2 obtained by subtracting the allowance M2 from the rotation angle NL at no load and the rotation angle L1 obtained by adding the allowance M1 to the rotation angle FL at the allowable load are applied to the working side wire and the tension side wire. Return to the equilateral ginseng detection range S where the detection pulley operates normally without breakage.

On the other hand, out of the range of the rotation angle L2 without subtraction M2 to the rotation angle NL at no load and the rotation angle L1 with the margin M1 added to the rotation angle FL at the allowable load, The control unit of FIG. 1 determines whether the detection value of the sensor falls within the range corresponding to the minimum value corresponding to the rotation angle L2 and the maximum value corresponding to the rotation angle L1. The judgment is made at (33).

When the detected value of the sensor is larger than the maximum value or smaller than the minimum value, the controller transmits the information to the ride car, the winch, and the like, and takes measures to prevent overloading the ride car.

Specifically, for example, the hoisting device is controlled to stop the lifting of the car, or the operation pattern in the car is controlled to emit a warning sound. As a result, it is possible to prevent the operation of the elevator apparatus in a state where the load detection apparatus is broken.

For the rotation angle of the detection pulley, the allowance M2 on the unloaded side is, for example, 10 to 15% of the weight when the ride car is empty. The allowable load side M1 is, for example, a value of 10 to 15% of the weight of the ride car when the source is full. For example, when the detection value of the sensor reaches the abnormal detection range AS continuously for a predetermined time, the control unit can recognize the breakage of the operation side wire and the tension side wire.

Next, in FIG. 3, the rotation control member which regulates rotation to the counterclockwise direction of the detection pulley in the load detection apparatus of Embodiment 1 is demonstrated. 3 is a schematic diagram showing a state in which a working side wire is broken in the load detection device of FIG.

In Fig. 3, the working side wire 18 is broken at the breaking portion P1. At this time, the operation side wire loses the tension for rotating the detection pulley 35 clockwise, and the detection pulley 35 is counterclockwise by the tension spring 42 and the tension side wire 40 (in FIG. Arrow direction). And when the rotation of the detection pulley 35 exceeds the forward three detection range S, the control part 33 will recognize the break | rupture of the operation side wire 18 as mentioned above.

Moreover, when the detection pulley 35 rotates beyond the normal detection range S, the rotational force by the tension spring 42 is regulated corresponding to the length of the regulation wire 52. As a result, the rotation of the detection pulley 35 is stopped.

That is, when the detection pulley 35 is rotating normally, as shown in FIG. 1, the regulation wire 52 is loosened. On the other hand, when the detection pulley 35 rotates counterclockwise beyond the normal range, as shown in FIG. 3, the regulating wire 52 is in a tensioned state. At this time, the tension spring 42, one end of which is supported by the regulation wire 52, is not contracted to the free length, it is maintained at a predetermined spring length. And the rotation of the detection pulley 35 stops in that position.

In this way, it is possible to reliably prevent inconvenience such as cutting of the harness in the sensor 32 due to over-rotation of the detection pulley 35 due to cutting of the operation side wire 18.

As described above, according to the load detection device according to the first embodiment, even if the wire wound on the detection pulley as the rotating body is judged, the car is not lifted in the overload state, and the parts such as the sensor are not damaged and high reliability is achieved. You can get

In addition, although the tension spring 42 was used as the rotational force supply part in Embodiment 1, the rotational force supply part in this invention is not limited to this, For example, the weight 45 of FIG. A torsion coil spring may be provided on the support shaft 30 of the detection pulley 35 and used as a rotational force supply member. Also in this case, the same effects as in the second embodiment can be obtained.

4-7, the load detection apparatus which concerns on Embodiment 2 of this invention is demonstrated. 4 is a schematic diagram showing a load detection device according to a second embodiment of the present invention. 5 is a schematic diagram showing a state in which the tension side wire is broken in the load detection device of FIG. FIG. 6 is an enlarged view showing a pulley and a pulley in the load detection device of FIG. 4. It is sectional drawing which shows the cross section in the X-X ray of the pulley and pulley block of FIG.

The load detection device of the second embodiment differs from the first embodiment in that the tension wire 42 is not provided with the regulating wire and that the pulley for one of the moving cars is slidable.

4 to 7, 1 is a base, 3 is a plurality of shuffle rods, 5 is a spring seat (7), (8), (22) is a nut, 10 is a plurality of shuffle springs, 12 is a pulley, 13 is a plurality A pulley of 14, which is laid on the first pulley and at the same time the pivot that is the center of rotation of the pulley, 15 is a frame, 16 is a fixed pulley, 18 is a working wire, 20 is a rod screw, 30 is a shaft, 32 is a sensor, 33 is a control part, 35 is a detection pulley, 35a is a notch, 37 is a fixture, 40 is a tension side wire, 42 is a tension spring, 62 is a 1st pulley for supporting the pulley 13, 62a is a 1st pulley A plurality of long holes as through holes provided at 62, 63 having a hole for screw through and a second pulley for enabling slide movement of the first pulley 62, 65 having a long hole 62a, and 2 Screws penetrating the holes of pulley 63, 67 is a flat seat provided on the screw head side of the screw 65, 68 is a collar provided on the male threaded portion of the screw 65, 70 is screwed to the screw 65 I'm a nut, 72 denotes a flat seat installed on the nut 70 side, 73 denotes a spring seat installed between the nut 70 and the flat seat 72.

Here, as shown in FIG. 4, one of the three pulleys 13, which is a pulley on the right side of the ground, is a slide pulley including the first pulley 62 and the second pulley 63. It is supported on the stand.

And this sliding pulley is comprised as follows. That is, as shown in FIGS. 6 to 7, the male screw portion and the collar 68 of the screw 65 pass through the long hole 62a of the first pulley 62 and the hole of the second pulley 63. . And the screw head side of the screw 65 is provided with the flat seat 67 between the collar 68 and the diameter larger than the diameter of the long hole 62a. On the other hand, on the nut 70 side, the length between the nut 70 and the ends of the color 68 is larger than the length of the plate thickness of the first pulley 62 and the plate thickness of the second pulley 63. Thereby, the 1st pulley 62 and the 2nd pulley 63 enable smooth slide conveyance of the 1st pulley 62 without being fastened by the screw 65 and the nut 70. FIG. In addition, the screw 65, the flat seat 67, 72, the nut 70, the spring seat 73 of the second pulley block 63 engaging with the long hole 62a of the first pulley block 62. The protrusions are formed.

The operation | movement at the time of normal in the load detection apparatus comprised as mentioned above is demonstrated.

First, the operation side wire 18 is wound around the vehicle pulley 13 and the fixed pulley 16 alternately as in the first embodiment. When the load in the ride car is heavier than the reference state, the detection pulley 35 is rotated clockwise so that the sensor 32 detects the rotation angle. On the other hand, when the load in the ride car is lighter than the reference state, the detection pulley 35 rotates counterclockwise so that the sensor 32 detects its rotation angle.

At this time, as shown in FIG. 4, the 1st pulley 62 is located in the position corresponding to the upper end part of the movable range by the long hole 62a.

Next, even in the load detection of the second embodiment, when the detected value of the sensor 32 is larger than the maximum value or smaller than the minimum value as in the first embodiment, the information is transmitted from the control unit 32 to the ride car, the winch, and the like. Action is taken to prevent overloading.

And as shown in FIG. 5, when the tension side wire 40 breaks, the above-mentioned slide pulley mechanism functions as a rotation control member. 5 is a schematic diagram showing a state in which the tension side wire is broken in the load detection device of FIG.

In FIG. 5, the tension side wire 40 is broken at the breaking portion P2. At this time, since the tension side wire 40 loses the tension for rotating the check pulley 35 counterclockwise, the detection pulley 35 rotates clockwise (in the direction of the arrow in FIG. 5) by the operating side wire 18. Done. When the rotation of the detection pulley 35 exceeds the normal detection range S, the controller 33 recognizes the breakage of the tension-side wire 40 as described above.

When the detection pulley 35 rotates beyond the normal detection range S, the pulley 13 for the slide pulley mechanism falls along the shape of the long hole 62a, and the first pulley 62 is long. It stops at the position corresponding to the lower end part of the movable range by the hole 62a. As a result, the rotation of the detection pulley 35 is stopped.

In this way, it is possible to reliably prevent irrationality such as cutting of the honeyness in the sensor 32 due to over-rotation of the detection pulley 35 due to cutting of the tension-side wire 40.

As described above, even in the load detecting apparatus according to the second embodiment, even if the wire wound on the detection pulley as the rotating body is judged as in the first embodiment, the ride car is not lifted in an overload state, and parts such as sensors are damaged. And high reliability can be obtained.

Moreover, in Embodiment 2, the long hole 62a was provided in the 1st pulley 62 side, and the protrusion part which consists of screws 54 was provided in the 2nd pulley stage 63 side. On the other hand, even if the long hole 62a is provided in the 2nd pulley block 63 side and a projection part is provided in the 1st pulley block 62 side, the effect similar to this embodiment (2) will be acquired.

The slide pulley mechanism is not limited to the configuration shown in the second embodiment. For example, the slide is provided in the second pulley 63 to engage the staed with the long hole 62a. It may be a configuration. In addition, the position in which the slide pulley mechanism is provided is not limited to the arrangement | positioning shown in Embodiment 2, For example, you may provide a slide pulley mechanism for the moving car 13 of the ground center.

In addition, although the acceleration sensor provided in the detection pulley 35 was used as the sensor 32 in each said embodiment, the sensor in this invention is not limited to this. The sensor applied to this invention should just be able to detect the rotation angle of a detection pulley. For example, the sensor of the present invention may be constituted by a so-called rotary encoder which detects displacement of the slit in an optical sensor provided with a plurality of slits on the rotation surface of the detection pulley and provided in addition to the detection pulley.

In each of the above embodiments, the rotational control member of Kyung-Ho who broke the working side wire 18 and the rotational control member when the tension-side wire 40 breaks are provided separately. It can also be installed together with a load detection device.

In addition, the rotation restricting member in the present invention is not limited to each of the above embodiments, but for example, a projection is provided at a predetermined position of the rotation surface of the detection pulley 35 and the stopper member engaged with the projection is not included in the detection pulley 35. By installing, the rotation angle of the detection pulley 35 can be regulated.

In addition, it is clear that the present invention is not limited to each of the above embodiments, and each embodiment may be changed in addition to those suggested in the embodiments within the scope of the technical idea of the present invention. In addition, the number, position, shape, etc. of the said structural member are not limited to the said embodiment, The number, position, shape, etc. which are suitable for implementing this invention can be made.

The present invention is a load detection device having a sensor for detecting a rotation angle of a rotating body that rotates in response to a load variation, and determines the state of the wire according to the detection value of the sensor. This makes it possible to reliably recognize the breakage of the wire, so that the burden on the elevator apparatus can be avoided by elevating the ride car to the state of overworking material.

In addition, the present invention identifies whether the wire is in a normal state by whether or not the detection value of the sensor is within a predetermined range in the above-described improved load detection device.

This makes it possible to reliably recognize the breakage of the wire, thereby avoiding the burden on the elevator apparatus by elevating the ride car in an overload state.

In addition, the present invention defines the normal range of the wire state by adding or subtracting the margin to the detected value by the sensor at the allowable load or the no load at the improved load detection device described above.

This makes it possible to reliably recognize the breakage of the wire, so that the burden on the elevator apparatus can be avoided by lifting and lowering the car in an overload state.

Moreover, this invention is a load detection apparatus provided with the rotation body which rotates corresponding to a load fluctuation, and is provided with the rotation control member which regulates the rotation range of a rotation body.

This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle even if the wire wound on the rotating body breaks, thereby reducing the damage of components such as sensors in the apparatus.

In addition, the present invention is to determine the state of the wire in accordance with the detection value of the sensor for detecting the rotation angle of the rotating body in the above-described improved load detection device. As a result, the rotation of the rotating body can be stopped at a predetermined rotational angle, thereby reducing damage to components such as sensors in the apparatus.

In addition, since the breakage of the wire can be recognized reliably, the burden on the elevator apparatus can be avoided by raising and lowering the car in an overload state.

In addition, the present invention identifies whether the wire is in a normal state by the detection value of the sensor in the above-described improved load detection device or not.

This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle, thereby reducing the damage of parts such as sensors in the apparatus.

Moreover, since breakage of a wire is recognized reliably, the burden to an elevator apparatus by elevating a ride car to the state of overload can be avoided.

In addition, the present invention defines the normal range of the wire state by adding or subtracting the margin to the detected value by the sensor at the allowable load or no load in the above-described improved load detection device.

This makes it possible to stop the rotation of the rotating body at a predetermined angle of rotation, thereby reducing the damage to components such as sensors in the apparatus.

In addition, since the breakage of the wire is reliably recognized, the elevator device can be avoided by raising and lowering the car in an overload state.

In addition, the present invention regulates the supply of the rotational force to the rotational body by the rotational force supply unit, in which the rotational restriction member is connected to the tension side wire, in the improved load detection device. As a result, the rotation of the rotating body can be stopped at a predetermined rotational angle, thereby reducing damage to the sensor or the like in the apparatus.

In addition, the present invention is to limit the possible range of the tension spring as the rotational force supply in the above-described improved load detection device to the regulation wire as the rotational restricting member. As a result, the rotation of the rotating body can be stopped at a predetermined rotational angle, thereby reducing damage to components such as sensors in the apparatus.

In addition, the present invention is to limit the amount of movement of the moving car in the improved load detection device described above to restrict the supply of the rotational force to the rotating body. As a result, the rotation of the rotating body can be stopped at a predetermined rotational angle, thereby reducing damage to components such as sensors in the apparatus.

In addition, the present invention constitutes a rotation control member of the improved load detection device described above with a first pulley and a second pulley having a slide mechanism. As a result, rotation of the rotating body can be stopped at a predetermined rotational angle, thereby reducing damage to components such as sensors in the apparatus.

The present invention is also an elevator apparatus provided with the improved load detection apparatus described above. For this reason, since breakage of a wire is recognized reliably, the burden to the elevator apparatus by elevating a ride car in the state of overload can be avoided.

In addition, since the rotation of the rotating body can be stopped at a predetermined rotational angle, damage to parts such as sensors in the load detection field is reduced.

In addition, the present invention is to identify the wire state in the control unit according to the detection value of the sensor by the above-described improved elevator apparatus, and to control the elevation of the ride car in accordance with the identification result. For this reason, since breakage of a wire is recognized reliably, burden to an elevator apparatus can be avoided by elevating a ride car to the state of overloading.

Moreover, this invention is a control method of the load detection apparatus provided with the sensor which detects the rotation angle of the rotating body which rotates corresponding to a load fluctuation, and determines the state of a wire according to the detection value of a sensor. As a result, the breakage of the wire is reliably recognized, so that the burden on the elevator apparatus can be avoided by raising and lowering the car in an overload state.

In addition, the present invention identifies whether the wire is in a normal state by whether or not the detection value of the sensor is within a predetermined range in the control method of the improved load detection device described above. For this reason, since breakage of an air can be recognized reliably, the burden to an elevator apparatus can be avoided by elevating a ride car in the state of overloading.

In addition, in the control method of the load detection device improved as described above, the present invention is to determine the normal range of the wire state by adding or subtracting the margin to the detected value by the sensor at the allowable load or the no load. This makes it possible to reliably recognize the breakage of the wire, so that the burden on the elevator apparatus can be avoided by raising and lowering the car in an overload state.

As described above, the load detection device according to the present invention is a load detection device having a sensor for detecting the rotation angle of a rotating body that rotates in response to a load variation, and determines the state of the wire according to the detection value of the sensor. This makes it possible to reliably recognize the breakage of the wire, which is useful as a load detection device that can avoid the burden on the elevator apparatus by elevating the ride car in an overload state.

Moreover, the load detection apparatus which concerns on this invention discriminates | determines whether a wire is in a normal state or not by the detection value of a sensor in a predetermined range. This makes it possible to reliably recognize the breakage of the wire, which is useful as a load detection device that can avoid the burden on the elevator apparatus by elevating the ride car to an overload state.

In addition, the load detection device according to the present invention determines the normal range in the wire state by adding or subtracting the margin to the detected value by the sensor at the allowable load or the no load. This makes it possible to reliably recognize the breakage of the wire, which is useful as a load detection device that can avoid the burden on the elevator apparatus by elevating the ride car in an overload state.

Moreover, the load detection apparatus which concerns on this invention is a load detection apparatus provided with the rotation body which rotates corresponding to a load fluctuation, and is provided with the rotation control member which regulates the rotation range of a rotation body.

For this reason, it is useful as a load detection apparatus which reduces the damage of components, such as a sensor, in a device in order to stop rotation of a rotation body at a predetermined rotation angle even if the wire wound by a rotation body breaks.

Moreover, the load detection apparatus which concerns on this invention judges the state of a wire based on the detection value of the sensor which detects the rotation angle of a rotating body.

This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle, which is useful as a load detection device in which damage to parts such as sensors in the device is reduced. Moreover, since the breakage of a wire can be recognized reliably, it is useful as a load detection site which can avoid the burden to an elevator apparatus by elevating a boarding car by overloading.

Moreover, the load detection apparatus which concerns on this invention discriminates | determines whether a wire is in a normal state by whether the detection value of a sensor is in a predetermined range. This makes it possible to determine the rotation of the rotating body at a predetermined rotational angle, which is useful as a load detection device in which damage to parts such as sensors in the device is reduced. Moreover, since the breakage of a wire can be recognized reliably, it is useful as a load detection apparatus which can avoid the burden to the elevator apparatus by elevating a boarding car in the overload state.

The load detecting device according to the present invention determines the normal range of the wire state by adding or subtracting the margin to the detected value by the sensor at the allowable load or the no load. This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle, which is useful as a load detection device in which damage to a sensor or the like in the device is reduced.

Moreover, since the breakage of a wire can be recognized reliably, it is useful as a load detection apparatus which can avoid the burden to an elevator apparatus by elevating a ride car in the overload state.

Moreover, the load detection apparatus which concerns on this invention restricts the supply of the rotational force of the rotating body by the rotational force supply part of the rotation control member connected to the tension side wire. This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle, which is useful as a load detection device in which the damage of parts such as sensors in the apparatus is reduced.

Moreover, the load detection apparatus which concerns on this invention limits the movable range of the tension spring as a rotational force supply part to the restriction wire as a rotational restriction member. This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle, which is useful as a load detection device in which damage to parts such as sensors in the device is reduced.

Moreover, in the load detection apparatus which concerns on this invention, a rotation control member restricts the movement amount of a moving car, and restricts supply of the rotational force to a rotating body. This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle, which is useful as a load detection device in which damage to parts such as sensors in the device is reduced.

Moreover, the load detection apparatus which concerns on this invention comprises the rotation control member by the 1st pulley and the 2nd pulley which have a slide mechanism. This makes it possible to stop the rotation of the rotating body at a predetermined rotational angle, which is useful as a load detection device in which damage to parts such as sensors in the device is reduced.

Moreover, the elevator apparatus which concerns on this invention is an elevator apparatus provided with the improved load detection apparatus mentioned above. This makes it possible to reliably recognize the breakage of the wire, which is useful as an elevator apparatus that can avoid the burden on the device caused by elevating the ride car to an overload state. In addition, since the rotation of the rotating body can be stopped at a predetermined rotational angle, it is useful as an elevator apparatus in which damage to parts such as sensors in the load detection device is reduced.

Moreover, the elevator apparatus which concerns on this invention identifies a wire state by a control part according to the detection value of a sensor, and controls the elevation of a ride car according to the identification result. This makes it possible to reliably recognize the breakage of the wire, which is useful as an elevator apparatus that can avoid the burden on the apparatus by elevating the ride car to an overload state.

In addition, the control method of the load detection device according to the present invention is a control method of the load detection device having a sensor for detecting the rotational angle of the rotating body to rotate in response to the load fluctuations to determine the state of the wire according to the detection value of the sensor will be. This makes it possible to reliably recognize the breakage of the wire, which is useful as a control method of the load detection device, which can avoid the burden on the elevator apparatus caused by lifting the car in an overloaded state.

Moreover, the control method of the load detection apparatus which concerns on this invention identifies whether a wire is in a normal state by the detection value of a sensor in a predetermined range, or not. This makes it possible to reliably recognize the breakage of the wire, which is useful as a control method of the load detection device that can avoid the burden on the elevator device caused by elevating the ride car to an overload state.

In the control method of the load detection device according to the present invention, the normal range of the wire state is determined by adding or subtracting the margin to the detected value by the sensor at the allowable load or the no load. This makes it possible to reliably recognize the breakage of the wire, which is useful as a control method of the load detection device that can avoid the burden on the elevator apparatus caused by elevating the ride car to an overload state.

Claims (3)

And a rotating body rotating while interlocking with the movement of the wire, a sensor detecting a rotation angle of the rotating body, and a control unit determining the state of the wire according to the detected value of the sensor. Load detection device, characterized in that. And a rotating body which rotates in conjunction with movement of the wire, and a rotating control member that regulates the range of rotation of the rotating body while the wire is wound. A control method of a load detecting device having a rotating body which is wound in conjunction with a movement of the wire and a sensor that detects a rotation angle of the rotating body, in accordance with a detection value of the sensor, wherein the state of the wire is wound. The control method of the load detection device characterized in that it comprises a step of determining.