JP2003002558A - Retaining device for main rope of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a retaining device for main ropes of an elevator in which a load detector normally functions regardless of upward/downward directions of a cage in a hoistway. SOLUTION: A plurality of retaining members 7 are arranged in parallel. The main ropes are connected with one ends of the members 7 and are inserted in a fixing portion 3. The other ends thereof are held by the fixing portion 3 through elastic bodies 8. The load detector operated by displacement of the restraining members 7 caused by a load acting on the main ropes 6 is provided. The main ropes 6 on the retaining members 7 side are respectively held by holding means 12 to hold respective positions of the retaining members 7 in vertical positions corresponding to parallel intervals in a fixing portion 3. Thus, a difference relating to the upward/downward positions of the cage is not generated in the upward/downward displacement amount of the retaining members 7, whereby a detected value of the load acting on the main ropes 6, by the load detector, is normalized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator main rope detaining device in which a main rope is suspended by a detent tool to which a load detecting device is engaged.

[0002]

2. Description of the Related Art FIGS. 12 and 13 are conceptual views of a conventional elevator main rope restraining device. FIG. 12 is an elevational view showing a state where an elevator car approaches the top of a hoistway. FIG. 13 is a view corresponding to FIG. 12 showing a state where the elevator car is lowered to the lower part of the hoistway. In the figure, 1 is a hoistway of an elevator, 2 is a machine room floor provided at the top of the hoistway 1, 3 is a fixed part made of a rope and is installed on the machine room floor 2, and 4 is the hoistway 1. It is an elevator car that moves up and down.

Reference numeral 5 is a suspension wheel pivotally attached to the car 4, 6 is a main rope wound around the suspension wheel 5 to suspend the car 4, and 7 is a main rope 6 connected to one end to form a gap in the fixed portion 3. The detent tool that is formed and inserted through, and 8 is an elastic body composed of a compression coil spring,
Spring receiving seats 9 are arranged at both ends and are fitted to the insertion ends of the detent tool 7. Reference numeral 10 denotes a split pin that is inserted into the tip of the pulling stop 7 on the insertion end side, and 11 is a pulling nut that is screwed into the pulling stop 7 and is arranged closer to the elastic body 8 than the split pin 10.

The conventional elevator main rope detaining device is constructed as described above, and the main rope 6 that suspends the car 4 is connected to the detent tool 7, and the detent tool 7 is fixed through the elastic body 8 to the fixing portion 3. Held in. When the car 4 is close to the top of the hoistway 1, the detent 7 tilts with respect to the vertical line as shown in FIG. Further, when the car 4 descends to the lower part of the hoistway 1, the inclination of the detent 7 with respect to the vertical line decreases as shown in FIG.

Although not shown, the load of the car 4 acting on the main rope 6 causes the vertical deformation of the tip of the detent 7 on the side opposite to the main rope 6 due to the elastic deformation of the elastic body 8. The load detecting device is engaged with the detent 7. The load detection device will be described in detail in the embodiments described later.

[0006]

In the conventional elevator main rope restraining device as described above, the inclination of the restraining tool 7 with respect to the vertical line changes depending on the vertical position of the car 4 in the hoistway 1. Therefore, even if the load of the car 4 is the same, the detection value of the load detection device varies depending on the vertical position of the car 4. Therefore, there is a problem that the elevator control based on the load of the car 4 is confused.

The present invention has been made to solve the above problems, and it is an object of the present invention to obtain a restraint device for an elevator main rope in which the load detecting device normally functions regardless of the vertical position of the car in the hoistway. To aim.

[0008]

In the elevator main rope detaining device according to the present invention, a plurality of rod-shaped main ropes are arranged in parallel, and the main ropes are connected to one end of each and inserted into the fixing portion. An end is held by a fixed portion via an elastic body, and a detent tool engaged with a load detection device that operates by displacement of the other end of the detent tool based on elastic deformation caused in the elastic body by a load acting on the main rope, A gripping unit is provided which is arranged near the detent device of the main rope and grips the main rope, and holds each posture of the detention device in a vertical state corresponding to the parallel interval in the fixing portion.

Further, in the elevator main rope restraint device according to the present invention, the actuating rods arranged in contact with the elastic spring seats of the respective restraints, and the plurality of adjacent restrainers are opposed to each other. Actuating rods provided and engaged with the respective detents are actuated through the action of an actuating plate that is vertically displaced according to the average value of the vertical displacement amount of these actuating rods and a transmission line connected to the actuating plate. A load detection device constituted by a detector is provided.

Further, in the restraint device for the elevator main rope according to the present invention, there is provided a support fitting which is detachably mounted on the upper end of the restraint device and which supports the operating rod of the load detecting device.

Further, in the elevator main rope restraint device according to the present invention, the restraint device is arranged so as to cover the restraint device, and the leg portions are fastened to positions outside the spring seats of the restraint devices arranged in parallel at the fixing portion. A mounting frame for the load detecting device is provided.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. 1 to 5 are views showing an example of an embodiment of the present invention, FIG. 1 is an elevational view conceptually showing a detent tool portion, FIG. 2 is a plan view of FIG. 1, and FIG. FIG. 4 is a cross-sectional view taken along the line AA, FIG. 4 conceptually shows the arrangement of a load detection device corresponding to the detent tool of FIG. 1, and FIG. 5 is a plan view of FIG. In the figure, 1 is a hoistway of an elevator, 2 is a machine room floor provided at the top of the hoistway 1, and 3 is a fixing portion which is installed on the machine room floor 2 and comprises a rope.

Reference numeral 6 denotes a main rope in which a plurality of them are arranged in parallel, and although not shown in the figure, the car 4 is suspended by being wound around a suspension vehicle 5 in the same manner as in FIG. 12 described above. Denoted at 7 are detents which are respectively connected to the main ropes 6 at one end and are inserted through the fixing portion 3 with a gap formed therebetween. Denoted at 8 is an elastic body formed of a compression coil spring, and spring receiving seats 9 are arranged at both ends thereof. It is fitted to the insertion end of 7. Reference numeral 10 denotes a split pin that is inserted into the tip of the pulling stop 7 on the insertion end side, and 11 is a pulling nut that is screwed into the pulling stop 7 and is arranged closer to the elastic body 8 than the split pin 10.

Reference numeral 12 is a gripping means, which is an intermediate member 13 and an intermediate member 1 in which the main ropes 6 are arranged on both sides in a horizontal plane.
Gripping plate 15 and gripping plate 15 formed with gripping grooves 14 respectively arranged on both sides of the main wire 6 and fitted with the main ropes 6 respectively.
A fastener 16 that is made of a bolt inserted into the intermediate member 13 and fastens the grip plate 15 to the intermediate member 13 is provided to grip the main rope 6, and the respective detents 7 have different postures in the fixed portion 3. The main rope 6 is held so as to be in a vertical state corresponding to the parallel spacing.

Reference numeral 17 denotes a mounting frame, which is an upper plate 18 provided so as to cover the upper sides of a plurality of detents 7 arranged in parallel on the fixing portion 3 and provided at four corners of the upper plate 18 respectively, and downward. The upper leg 19 extended to the outside, the upper end overlapped with the lower end of the upper leg 19, and the lower end of the upper leg 19 is fastened to the outside of the spring receiving seat 9 of the plurality of detents 7 arranged in parallel in the fixing portion 3. Lower leg 21 and upper leg 1 fastened by
9 and the vertical groove 22 provided in the overlapping portion of the lower leg 21.
The fastener 23 is composed of a bolt inserted into the bolt and a nut screwed into the bolt.

Reference numeral 24 denotes a load detecting device, which is an operating plate 25 which faces the three detents 7 which are adjacent to each other and which are arranged at respective corner positions of a triangle in the horizontal plane, and three of which correspond to the operating plate 25. The upper rod 18 and the operating plate 25 are provided so as to face each of the detents 7 and are inserted into the upper plate 18 and the operating plate 25 with a gap therebetween, and the lower ends thereof are screwed into the operating rod 26 and the operating rod 26 arranged in contact with the spring seat 9. A positioning nut 27 is provided so as to contact the lower surface of the operating plate 25.

Further, the load detecting device 24 includes an operating rod 26.
A retaining nut 28 screwed into the upper end of the upper plate 18, an urging member 29 formed of a compression coil spring that is fitted between the operating rod 26 and disposed between the upper plate 18 and the operating plate 25, and is pivotally attached to the upper surface of the upper plate 18. The first pulley 30, which is arranged so as to correspond to the position of the center of gravity of the triangle on one of the operating plates 25, is pivotally attached to the upper surface side of the upper plate 18 and arranged corresponding to the position of the center of gravity of the triangle on the other operating plate 25. The second pulley 31 is provided.

Further, the load detecting device 24 includes a detector 32 which is composed of a detection switch or a differential transformer and is attached to one side of the upper plate 18, and a transmission pulley 33 which is pivotally supported at the tip of the operating shaft of the detector 32. , One end of which is connected to the position of the center of gravity of the triangle on one of the operating plates 25 so that the first pulley 30 and the transmission pulley 3 are connected.
3 is wound around the second pulley 31, and the other end is provided with a transmission line 34 connected to the position of the center of gravity of the triangle of the other operating plate 25.

In the restraint device for the elevator main rope constructed as described above, a plurality of rod-like restraining tools 7 are arranged in parallel, and the main rope 6 is connected to one end of each of them and inserted into the fixing portion 3. The other end is held by the fixed portion 3 via the elastic body 8. Further, the gripping means 12 is arranged near the detent 7 of the main rope 6 to grip the main rope 6, respectively.
The respective detents 7 are held in a vertical state corresponding to the parallel spacing in the fixed portion 3.

Further, the lower end of the actuating rod 26 of the load detecting device 24 is arranged in contact with the spring seat 9 of the elastic body 8, and is generated in the elastic body 8 by the load of the elevator car, that is, the load acting on the main rope 7. Vertical displacement on the other end side of the detent 7 due to elastic deformation is averaged for the three detents 7 engaged with the actuation plate 25, and the actuation plate 25 operates in the vertical direction.

The vertical displacements of both actuating plates 25 due to this are further averaged via the transmission line 34 and the transmission pulley 33, and are transmitted to the operating shaft of the detector 32 to be transmitted to the detector 32.
Works. Since the detent 7 is held by the gripping means 12 in a vertical state corresponding to the side-by-side spacing in the fixed portion 3, when the detent 7 is vertically displaced, depending on the vertical position of the car 4 in the hoistway 1, the detent is stopped. The inclination of the tool 7 with respect to the vertical line does not change.

Therefore, it is possible to prevent in advance the problem that the detection value of the load detection device 24 varies depending on the vertical position of the car 4, and the load detection device is irrespective of the vertical position of the car 4 in the hoistway 1. 24 normal outputs are obtained. As a result, the elevator can be controlled by a predetermined method based on the load of the car 4 and the operation can be normalized.

Further, the leg portion of the mounting frame 17 of the load detecting device 24 is constituted by both the upper leg 19 and the lower leg 21, and the both are fastened via the slot 22. Therefore, the position of the upper plate 18 with respect to the fixed portion 3 can be easily adjusted in the vertical direction, and it is possible to easily cope with the difference in the protruding size of the elastic body 8 from the fixed portion 3. As a result, the efficiency of the work of mounting the load detection device 24 can be improved.

The legs of the mounting frame 17 of the load detecting device 24 are fastened by the fasteners 20 to the outside of the spring receiving seats 9 of the plurality of detents 7 arranged in parallel in the fixing portion 3. Therefore, the attachment frame 17 can be easily attached to the existing elevator so as to cover the detent 7 and the elastic body 8. Therefore, the existing elevator can be equipped with the gripping means 12 and the load detection device 24 can be additionally equipped by a simple refurbishment work, and the operation in the embodiment of FIGS. 1 to 5 can be easily obtained even in the existing elevator. it can.

Embodiment 2. FIG. 6 is a diagram showing an example of another embodiment of the present invention, and is a diagram corresponding to an enlarged view of a main part of FIG. 4 described above. In addition, other than FIG. 6, the above-described FIGS.
A restraint device for the elevator main ropes is configured similarly to the above embodiment. In the drawings, the same reference numerals as those in FIGS. 1 to 5 indicate corresponding parts, and 35 is a support metal fitting, which is fitted to the upper end portion of the detent tool 7 and arranged and fastened between the two detent nuts 11 to detect the load. Supports the lower end of actuation rod 26 of device 24.

Even in the elevator main rope restraining device constructed as described above, the main rope 6 is held by the gripping means 12.
Is held to hold each of the detents 7 in a vertical state, and the load detector 24 detects the load of the car 4. Therefore, although detailed description is omitted, the same operation as that of the embodiment of FIGS. 1 to 5 can be obtained in the embodiment of FIG.

Further, in the embodiment of FIG. 6, the support fitting 35 can be easily added by removing the retaining nut 11 on the upper side of the existing elevator. Therefore, the gripping means 12 and the load detection device 24 can be additionally equipped to the existing elevator by a simple repair work, and the operation in the embodiment of FIGS. 1 to 5 can be easily obtained.

Embodiment 3. 7 and 8 are also diagrams showing an example of another embodiment of the present invention, in which FIG.
8 is a perspective view of the support fitting of FIG. 7. In addition, except for FIGS. 7 and 8, a restraint device for the elevator main rope is configured similarly to the embodiment of FIGS. 1 to 5 described above. In the figure, the same reference numerals as those in FIGS. 1 to 5 indicate corresponding parts, and 36 is a support fitting, which is composed of a support plate 37 and a nut 38 welded to the back surface of the support plate 37,
A nut 38 is screwed onto the upper end of the detent 7 and is arranged between the split pin 10 and the detent nut 11, and the support plate 37 supports the lower end of the operating rod 26 of the load detection device 24.

In the restraint device for the elevator main rope constructed as described above, the main rope 6 is held by the gripping means 12.
Is held to hold each of the detents 7 in a vertical state, and the load detector 24 detects the load of the car 4. Further, the support fitting 36 can be easily added to the retaining member 7 of the existing elevator. Therefore,
Although detailed description is omitted, the same operation as that of the embodiment of FIG. 6 can be obtained in the embodiment of FIGS. 7 and 8.

Fourth Embodiment FIG. 9 is also a diagram showing an example of another embodiment of the present invention and is a diagram corresponding to FIG. 7 described above.
The elevator main rope restraining device is configured similarly to the above-described embodiment shown in FIGS. 1 to 5 except for FIG.
In the figure, the same reference numerals as those in FIGS.
Reference numeral 9 is a support metal fitting, which is configured in substantially the same manner as the support metal fitting 36 described above.
The lower end of the operating rod 26 of the load detection device 24 is supported.

Even in the elevator main rope detaining device constructed as described above, the main rope 6 is held by the gripping means 12.
Is held to hold each of the detents 7 in a vertical state, and the load detector 24 detects the load of the car 4. Further, the support fitting 39 can be easily added to the retaining member 7 of the existing elevator. Therefore,
Although detailed description is omitted, in the embodiment of FIG. 9, the same operation as that of the embodiment of FIG. 6 can be obtained.

Fifth Embodiment 10 and 11 are also views showing an example of another embodiment of the present invention. FIG. 10 is a view corresponding to FIG. 7 described above, and FIG. 11 is an enlarged perspective view of the joint of FIG. In addition, other than FIGS. 10 and 11, the above-described FIGS.
A restraint device for the elevator main ropes is configured similarly to the above embodiment.

In the drawings, the same reference numerals as those in FIGS. 1 to 5 indicate corresponding parts, and 40 is a joint provided with a female screw and one side thereof is screwed into the upper end of the detent 7 and a through hole into which the split pin 10 is inserted. 41 is provided. Reference numeral 42 is a support fitting, and the lower threaded portion is screwed into the joint 40 to support the lower end of the operating rod 26 of the load detection device 24.

Even in the elevator main rope restraining device constructed as described above, the main rope 6 is held by the gripping means 12.
Is held to hold each of the detents 7 in a vertical state, and the load detector 24 detects the load of the car 4. Further, the support fitting 42 can be easily added to the detent 7 of the existing elevator via the joint 40. Therefore, although detailed description is omitted, the same operation as that of the embodiment of FIG. 6 can be obtained in the embodiment of FIGS. 10 and 11.

[0035]

As described above, according to the present invention, a plurality of rod-shaped rods are arranged in parallel, the main ropes are connected to one end of each rod and inserted into the fixing portion, and the other end is fixed via an elastic body. And a detent that is engaged with a load detection device that is actuated by the displacement of the other end of the detent due to elastic deformation that occurs in the elastic body due to the load that acts on the main rope, and that is located near the detent of the main rope. And grip each main rope,
A holding means for holding each posture of the detent tool in a vertical state corresponding to the parallel interval in the fixed portion is provided.

As a result, the main ropes are gripped by the gripping means near the detents, and the respective attitudes of the detents are held in the vertical state corresponding to the parallel spacing in the fixing portion. Therefore, the vertical displacement of the detent due to the elastic deformation of the elastic body caused by the load of the car of the elevator is detected by the load detection device without causing a difference in the vertical position of the car in the hoistway. Therefore, there is an effect that the elevator can be controlled by a predetermined method based on the load of the car to normalize the operation.

As described above, according to the present invention, the actuating rods arranged in contact with the elastic spring seats of the respective detents and the plurality of detents adjacent to each other are provided so as to face each other. By the detector that operates through the operation of the operating plate that is engaged with the detent device and that is vertically displaced according to the average value of the vertical displacement of the operating rod and the transmission line connected to the operating plate. The load detecting device configured is provided.

As a result, the main ropes are gripped by the gripping means near the detents, and the respective attitudes of the detents are held in the vertical state corresponding to the parallel spacing in the fixing portion. Therefore, the vertical displacement of the detent due to the elastic deformation generated in the elastic body due to the load of the elevator car does not differ depending on the vertical position in the hoistway of the car, and the load having the actuation rod, actuation plate, and transmission line is not changed. It is detected by the detection device. Therefore, there is an effect that the elevator can be controlled by a predetermined method based on the load of the car and the operation is normalized.

Further, as described above, the present invention is provided with the support fitting which is detachably mounted on the upper end of the detent and supports the operating rod of the load detecting device.

As a result, the main ropes are gripped by the gripping means near the detents, and the respective attitudes of the detents are held in the vertical state corresponding to the parallel spacing in the fixing portion. Therefore, the vertical displacement of the detent due to the elastic deformation of the elastic body caused by the load of the car of the elevator is detected by the load detection device without causing a difference in the vertical position of the car in the hoistway. Therefore, there is an effect that the elevator can be controlled by a predetermined method based on the load of the car to normalize the operation. Further, since the supporting metal fitting supporting the actuating rod of the load detecting device is detachably attached to the upper end of the detent tool, there is an effect of facilitating the work for adding the load detecting device to the existing elevator.

Further, as described above, the present invention is arranged so as to cover the detents, and the leg portions are fastened to the outer side of the spring receiving seats of the detents arranged in parallel in the fixed portion. The mounting frame is provided.

As a result, the main ropes are gripped by the gripping means near the detents, and the respective attitudes of the detents are held in the vertical state corresponding to the parallel spacing in the fixed portion. Therefore, the vertical displacement of the detent due to the elastic deformation of the elastic body caused by the load of the car of the elevator is detected by the load detection device without causing a difference in the vertical position of the car in the hoistway. Therefore, there is an effect that the elevator can be controlled by a predetermined method based on the load of the car to normalize the operation. Further, since the leg portion of the mounting frame of the load detecting device is fastened to the outside of the spring seat or the like at the fixed portion, there is an effect that the work of adding the load detecting device to the existing elevator is facilitated.

[Brief description of drawings]

FIG. 1 is a view showing a first embodiment of the present invention and is an elevational view conceptually showing a detent tool portion.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG.

4 is a view equivalent to FIG. 1 conceptually showing the arrangement of a load detection device corresponding to the detent tool of FIG. 1.

5 is a plan view of FIG.

FIG. 6 is a view showing the second embodiment of the present invention and is a view corresponding to an enlarged view of a main part of FIG. 4 described above.

FIG. 7 is a view showing the third embodiment of the present invention and is a view corresponding to an enlarged view of a main part of FIG. 6 described above.

8 is a perspective view of the support fitting of FIG. 7. FIG.

FIG. 9 is a view showing the fourth embodiment of the present invention and is equivalent to FIG. 7 described above.

FIG. 10 is a view showing the fifth embodiment of the present invention and corresponds to FIG. 7 described above.

11 is an enlarged perspective view of the joint of FIG.

FIG. 12 is a view conceptually showing a conventional elevator main rope restraining device, and is an elevation view showing a state where an elevator car approaches the top of a hoistway.

FIG. 13 is a view corresponding to FIG. 12 showing a state where the elevator car is lowered to the lower part of the hoistway.

[Explanation of symbols]

3 fixed parts, 6 main ropes, 7 detents,
8 elastic body, 9 spring receiving seat, 12 gripping means,
17 mounting frame, 24 load detection device, 25
Working plate, 26 working rod, 32 detector,
34 transmission lines, 35 support fittings, 36 support fittings, 39 support fittings, 42 support fittings.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masami Kawamura             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. F-term (reference) 3F002 CA02 DA02 DA07                 3F305 BC07 BC09

Claims (4)

[Claims] 1. A plurality of rod-shaped members are arranged in parallel,
The main rope is connected to each one end and inserted into the fixed portion, and the other end is held by the fixed portion via an elastic body, and the other end is based on elastic deformation caused in the elastic body by a load acting on the main rope. Of the detent that is engaged by the load detection device that is operated by the displacement of the detents and the main ropes that are disposed near the detents and that grip the main ropes, respectively An elevator main rope restraining device having a gripping means for holding a vertical state corresponding to the distance. 2. A load detecting device, which is provided so as to oppose an actuating rod arranged in contact with an elastic spring seat of each detent, and a plurality of adjoining detents, which are provided so as to face each other. By the actuating plate which is engaged with the actuating rod corresponding to the tool and is displaced vertically according to the average value of the vertical displacement of the actuating rod, and the detector which operates through the action of the transmission line connected to the actuating plate. The restraint device for the elevator main rope according to claim 1, characterized in that it is configured. 3. The elevator according to any one of claims 1 and 2, further comprising: a support fitting detachably mounted on an upper end of the detent to support an operating rod of the load detecting device. Main rope restraint device. 4. The load detection device mounting frame is arranged so as to cover the detents, and the legs are fastened to positions outside the spring receiving seats of the detents arranged in parallel at the fixing portion. The elevator main rope restraining device according to any one of claims 1 to 3, wherein