JPH09151059A - Elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obviate a guide rail for a balance weight, and inexpensively install a device by arranging a hole to pass at least a single cable body in the balance weight, and providing a cable body to guide the balance weight fixed on the upper end and the lower end of a hoistway through this hole. SOLUTION: A guide rail 3 to guide a car 4 having a car guide mechanism 5 is installed on a steel pole 1 installed in a hoistway of an elevator, and the car 4 is smoothly moved and guided along this. A balance weight 6 is connected to the car 4 through a sheave 8 and a pulley 9 by a main rope 7, and the car 4 is vertically moved by a driving device 10. In this case, guide ropes 11 are arranged to guide the balance weight, and this is fixed through a compression spring 13 to a beam 12 whose lower end is arranged on a hoistway floor surface and upper end is arranged on the hoistway upper side. The guide ropes 11 are inserted into rope guide holes arranged in the balance weight 6, and a movement of the balance weight 6 is guided.

Description

Detailed Description of the Invention

[0001]

[0001] The present invention relates to an elevator apparatus.

[0002]

2. Description of the Related Art In recent years, with the advent of an aging society, there is an increasing demand for installing elevators in low- and medium-rise apartments and private houses. However, the conventional elevator has a large hoistway area for a residential use and is expensive, which prevents its spread. In particular, in a slip-type elevator that uses a counterweight, a guide rail for guiding is required for each of the car and the counterweight, and these require high-accuracy mounting accuracy. This is one of the reasons why the installation cost is high. Further, when the guide rail is attached to the wooden house, an iron column for supporting the guide rail must be provided, and thus there is a problem that the hoistway area becomes large.

Therefore, as a conventional technique for reducing the area of the hoistway, as a system using no counterweight, as disclosed in, for example, Japanese Unexamined Patent Publication No. 62-31684,
Attach the sprocket to the elevator drive, attach the roller chain that engages the sprocket to the car, and engage the sprocket and roller chain to
A method of raising and lowering the car has been proposed. In this system, it is not necessary to use a counterweight as in a slip elevator, and a large winding cylinder is not required in a winding cylinder elevator, so that the hoistway area can be reduced.

Further, as described in Japanese Utility Model Laid-Open No. 64-21180, for example, a method is proposed in which a pair of guide rails for a car and a counterweight, which are conventionally separate, are commonly used by one set of guide rails. Has been done. In the above method, it is possible to shorten the mounting process because only one set of guide rails, which is conventionally required for two sets, can be shortened, and the area for one set of guide rails, and further, for one set of iron columns supporting the guide rails. Only the area can be reduced.

[0005]

However, in the method using the sprocket and the roller chain, since the counterweight is not used, the driving device must generate all the power for supporting the weight of the car and moving it up and down. Therefore, there is a problem that the power consumption becomes larger than that of an elevator using a counterweight.

Further, in the system in which the guide rail is commonly used, when the car moves up and down, it guides the car while sliding or rolling in contact with the guide rail and a guide mechanism attached to the car and a guide on the counterweight side. Since the mechanism has to be able to pass each other on one rail, the guide rail becomes large in size, and the mounting becomes more difficult than ever before, and there is a risk that the installation cost will be rather high. Also, if the guide rail is shared, the degree of freedom in designing the arrangement of the basket and the counterweight decreases, so it is not possible to effectively use the empty space in the hoistway and the hoistway area may not be reduced. There is.

It is an object of the present invention to provide a sliding elevator using a counterweight which consumes less power, but does not require a guide rail for the counterweight, so that the counterweight can be installed inexpensively and the hoistway area can be reduced. To provide a small residential elevator.

[0008]

[Means for Solving the Problems] Since elevators for medium- and low-rise apartments and private houses do not have a high hoistway height, they are strong as a mechanism for guiding a counterweight like a conventional elevator for buildings. It is not always necessary to use a simple guide rail. Therefore, in order to solve the above problems, the present invention, in a lift elevator using a counterweight, as a means for guiding the counterweight without using a guide rail, a cord fixed to the top and bottom of the hoistway. The balance weight is guided by passing the cords through the balance weight.

Further, a mechanism is provided in which a tubular member is provided in all or part of the range where the counterweight moves up and down, and the counterweight is passed inside the tubular member to guide the counterweight. It is what

Further, the hollow member is fixed to an iron pillar that supports a guide rail for a car.

Further, the horizontal section of the counterweight moving up and down inside the hollow member is formed so as to become asymptotically smaller toward the upper and lower ends.

The cord-shaped body and the tubular member are combined together.

In addition to the guide of the counterweight by the cords, the balance weight is prevented from swaying to at least one of the stop positions of the counterweight corresponding to the position where the car stops on each floor. It has an elastic body.

Further, as a means for suppressing the vibration of the counterweight during operation of the elevator, a liquid sealing container for injecting a liquid into the counterweight is provided so that the liquid sealing container is not filled with the viscous fluid. By enclosing it, the vibration of the counterweight is damped by the damping effect during sloshing of the viscous fluid.

In order to apply tension to the cord,
The elastic member is provided to the hoistway via an elastic body, and means for detecting that the length of the elastic body exceeds a predetermined length range is provided. Is provided with a safety device for emergency stop of the elevator when the length of the elevator exceeds a predetermined length.

According to the present invention, the cord-like body is used as a means for guiding the counterweight, and the cord-like body may be fixed at two positions above and below the hoistway, and can be mounted with high precision like a guide rail. Since it is not necessary, it is possible to simplify the elevator installation process, and as a result, it is possible to obtain the effect of reducing the cost of the middle- and low-rise apartments and the elevator for personal housing.

Further, in the structure in which the counterweight is guided by a hollow member instead of the guide rail, the hollow member is provided for the purpose of preventing the counterweight from coming into contact with the surrounding structure, and the outside of the counterweight. It is possible to secure a large clearance between the diameter and the inner diameter of the hollow member. Therefore, it becomes possible to roughly set the mounting accuracy of the hollow member, and it is possible to simplify the elevator mounting process, and as a result, it is possible to inexpensively provide an elevator for a middle- and low-rise apartment house or an individual house.

Further, since the hollow member is fixed to the iron column that supports the guide rail for the car, the iron column that supports the hollow member is not required, so that the area of the hoistway can be reduced. Become.

Further, by forming the horizontal section of the counterweight moving up and down inside the hollow member so that the horizontal section becomes asymptotically smaller toward the upper and lower ends, the counterweight is opened at the opening of the hollow member or the hollow member. It is possible to guide smoothly without colliding with the step of the joint.

Further, in addition to guiding the counterweight by means of a cord, in particular, at least one of the stop positions of the counterweight corresponding to the position where the car stops on each floor is provided with a balance weight anti-sway means. According to the invention, when the car reaches the stop position, the vibration of the counterweight can be reliably stopped by the anti-sway means.Therefore, similar to the conventional method of supporting the counterweight by using the cord, the guide weight is used. You can get the safety of.

In addition to guiding the counterweight by means of a cord, as a means for suppressing the vibration of the counterweight during elevator operation, a liquid encapsulating container capable of injecting a liquid into the counterweight is provided, and a viscous fluid is placed in the liquid enclosing container. By equipping the liquid enclosure with a device that does not fill the liquid enclosure container, if it is difficult to reduce the vibration of the counterweight only by the cords, the vibration of the counterweight is damped by the damping effect during sloshing of the viscous fluid. be able to.

Further, the cord is supported on the hoistway through the elastic body so as to give tension to the cord, and the length of the elastic body is set to exceed a predetermined length range. A state in which the counterweight is dangerous due to an earthquake etc. by providing a means for detecting and a safety device for emergency stop of the elevator when the length of the elastic body exceeds a predetermined length by the detecting means You can safely stop the elevator before it vibrates to.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an elevator showing a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes an iron pillar installed in a hoistway of an elevator, and a guide rail 3 for guiding a car 4 via a plurality of brackets 2 is attached to the iron pillar 1. A car guide mechanism 5 is attached to the car 4, and the car guide mechanism 5 moves along the guide rails 3 to smoothly guide the car 4. A counterweight 6 is connected to the car 4 by a main rope 7 via a sheave 8 and a pulley 9. A drive device 10 drives the sheave 8 to move the car 4 up and down. Reference numeral 11 is a guide rope for guiding the counterweight, the lower end of which is fixed to the floor surface of the hoistway and the upper end of which is fixed to a beam 12 provided on the upper side of the hoistway via a compression spring 13. A constant tension is applied to the guide rope 11 by a compression spring 13. The balance weight 6 is provided with a rope guide hole through which a guide rope (not shown) is inserted, and the balance weight 6 is guided by a structure in which the guide rope 11 is passed through the rope guide hole. Reference numeral 14 is a shock absorber.

Next, a specific structure of the counterweight will be described with reference to FIG. The counterweight frame 15, which is the outer frame of the counterweight 6, is connected to the main rope 7. A plurality of adjusting weights 17 are loaded on the counterweight frame 15 along an adjusting weight guide 16 provided on the counterweight frame 15, and are fixed by an adjusting weight stopper 18. By using a plurality of adjustment weights 17, the weight of the entire counterweight can be adjusted to be substantially equal to the weight of the car. The counterweight frame 15 is provided with a plurality of rope guide holes 19 to guide the counterweight 6 through the guide rope 11.

Next, the operation of this embodiment will be described. The drive device 10 rotates the sheave 8, and the main rope 7 hung on the sheave 8 causes the car 4 and the counterweight 6 to move up and down. At this time, the counterweight 6 is restrained in the horizontal direction by the guide rope 11, so that the counterweight can be prevented from vibrating greatly and colliding with surrounding members.

As described above, according to this embodiment, it is not necessary to install a guide rail for the counterweight,
Since the guide ropes for guiding the counterweight need only be fixed at two points above and below the hoistway, it is possible to reduce the number of elevator installation steps, and thus the cost of elevator installation. Furthermore, since a guide rail for a counterweight is not required, the hoistway area can be made smaller than that of a conventional slip elevator.

Next, another specific structure of the counterweight in the embodiment will be described with reference to FIG. In FIG. 3, the adjusting weight guide 16 has a function of connecting the counterweight frame upper plate 15a and the counterweight frame lower plate 15b, and a function of guiding the plurality of adjusting weights 17 to the counterweight frame 15, and adjusting The weight guide 16 is formed of a hollow member, and has a structure in which the guide rope 11 is passed through the hollow portion of the counterweight guide 16.

According to this structure, the adjusting weight guide serves as both the member for connecting the upper and lower plates of the counterweight frame and the member for passing the guide rope, so that the number of parts of the counterweight can be reduced and the counterweight can be reduced. It can be provided at low cost. Further, since the rope guide hole does not protrude from the horizontal cross section of the counterweight frame, it is possible to realize a guide rope type elevator with a cross-sectional area equivalent to that of a conventional counterweight, so the hoistway area can be reduced. .

Next, a second embodiment of the present invention will be described with reference to FIG. In FIG. 4, the guide rope 11 is connected to the rod 20, and the rod 20 penetrates the beam 12 in the upper part of the hoistway and sandwiches the compression spring 13 and the spring stopper 21 to be supported by the nut 22. A limit plate 23 is attached to one end of the spring stopper 21 so as to contact the microswitch 24. Furthermore, the signal of the microswitch 24 is connected to an elevator emergency stop device 25. The limit plate 23 is adjusted so that the signal of the micro switch 24 is turned on when the spring stopper moves upward or downward over a preset fixed amount, and the emergency stop device 25 is activated at this time. It is configured.

Since tension is applied to the guide rope 11, when the counterweight vibrates due to an earthquake or when the relative positions of the upper and lower sides of the hoistway supporting the guide rope 11 change. Guide rope 11
It is possible to prevent cutting due to loosening or overload. Further, when the counterweight vibrates greatly in the horizontal direction due to an earthquake or the like, the guide rope 11 is passed through the rod 20.
The spring stopper 21 connected to the spring stopper 21 is pulled down, and the limit plate 23 fixed to the spring stopper 21 is
When the downward displacement of the counterweight exceeds a preset amplitude of vibration of the counterweight, which is considered to be dangerous for the operation of the elevator, the switch of the microswitch 24 is actuated and thus the emergency stop device 25 is actuated to activate the elevator. Will stop. In addition, when the guide rope 11 is stretched due to fatigue over time, or when the guide rope 11 is cut for some reason, the limit plate 2
Even when 4 is displaced beyond a preset value which is considered dangerous for the elevator operation, the switch of the microswitch 24 is activated, and therefore the emergency stop device 25 is activated to stop the elevator.

According to this embodiment, the tension of the guide rope can be kept constant even when the counterweight vibrates. Also, if the balance weight vibrates significantly in the horizontal direction due to an earthquake, or if the guide rope becomes fatigued and stretches over time, or if the situation is deemed dangerous for elevator operation, stop the elevator emergency. It is possible to secure safety.

Next, a third embodiment of the present invention will be described with reference to FIG. In FIG. 5, reference numeral 26 is a liquid tank provided below the counterweight frame 15. An unillustrated viscous fluid such as silicone oil is injected into the liquid tank 26 from the liquid injection port 27 in such an amount that the liquid tank 26 is not filled with the viscous fluid. Reference numeral 28 denotes a liquid discharge port for draining the viscous fluid inside the liquid tank 26 when the elevator is disassembled.

When the counterweight vibrates due to an earthquake or the like, the viscous fluid in the liquid tank causes sloshing, so that the vibration of the counterweight can be quickly damped by the damping effect of the viscous fluid.

Next, a fourth embodiment of the present invention will be described with reference to FIG. In FIG. 6, 29 is a counterweight 6 on the inside.
It is a guide pipe that passes through and is attached to the hoistway inner wall 31 by a pipe bracket 30.

Since the guide pipe 29 is intended to prevent the counterweight 6 from colliding with other members in the hoistway, the clearance between the outer diameter of the counterweight 6 and the inner diameter of the guide pipe 29 should be 10 mm or more. Therefore, the mounting accuracy of the guide pipe 29 can be set lower than the mounting accuracy of the guide rail for the conventional counterweight, and the mounting can be easily performed. It is possible to simplify.

Next, a fifth embodiment of the present invention will be described with reference to FIG. Counterweight 6 connected to main rope 7
Is provided with a counterweight guide mechanism 32 that guides the counterweight 6 while rolling or sliding inside the guide pipe 29. Furthermore, the upper and lower ends of the counterweight 6 are tapered so that their outer diameters become asymptotically smaller toward the tip.

The counterweight guide mechanism allows the counterweight to smoothly move up and down inside the guide pipe, and even if the taper at the upper and lower ends of the counterweight causes a step in the joint of the guide pipe, the counterweight has a step. Since it can be prevented from colliding with, the counterweight can be safely moved up and down.

Next, a sixth embodiment of the present invention will be described with reference to FIG. In FIG. 8, the guide pipe 29 is attached to the iron column 1 that supports the guide rail 3 for the car by the pipe bracket 30.

Even if the inner wall of the hoistway does not have sufficient strength, such as a wooden house, an iron column for a counterweight is not required, and the hoistway area can be reduced.

Next, a seventh embodiment of the present invention will be described with reference to FIG. In FIG. 9, the counterweight 6 is the guide rope 1.
1 and is moved up and down inside the guide pipe 29.

The balance weight is guided by a guide rope, and the guide pipe is installed for the purpose of preventing the balance weight from vibrating in the horizontal direction due to an earthquake or the like and colliding with other members in the hoistway. The clearance between the outer diameter of and the inner diameter of the guide pipe can be made larger than that of the fourth embodiment of the present invention. Therefore, the accuracy of attaching the guide pipe can be made rougher. Therefore, the installation cost of the elevator can be reduced.

Next, an eighth embodiment of the present invention will be described with reference to FIG. In FIG. 10, 33a, 33b, and 33c are the first floor, second floor, and third floor of the house, respectively. 34
Is a guide spring for stopping the swing of the counterweight, and is attached to the hoistway inner wall 31 or the iron pillar 1. The guide spring 34 is attached to the stop position of the counterweight 6 when the car 4 stops on each floor.

Next, a specific structure of the guide spring will be described with reference to FIG. Guide springs 34a, 34 attached to the hoistway wall surface 31 or the iron pillar 1
The interval of b is wider than the width of the counterweight 6 at the upper and lower ends as shown by the broken line in FIG. 11, becomes asymptotically narrower from the upper and lower ends of the guide spring to the center, and is narrower than the width of the counterweight 6 near the center. It is installed so that. Therefore, the counterweight 6 is attached to the guide spring 34.
When located between a and 34b, both ends of the counterweight 6 have guide springs 34 as shown by the dotted line in FIG.
It will be restrained by a and 34b.

Even if the counterweight 6 guided by the guide rope 11 vibrates horizontally during the operation of the elevator, the vibration can be completely stopped by the guide spring each time the elevator stops at each floor.
In addition, when the car 4 moves from the first floor to the second floor to the third floor in FIG. 10 or moves from the third floor to the second floor to the first floor in FIG. 10, the guide springs 32a and 32b are spaced vertically. Since the width of the car 4 is wider than the width of the car 4 at the end, the car 4 can smoothly pass, and vibration of the counterweight can be suppressed each time the car 4 passes.

According to the present embodiment, even if the guide rope is guided by a guide rope having a lower horizontal rigidity than that of the conventional counterweight guide method, the car is stopped at each floor by the guide spring or passed through each floor. Since it is possible to suppress the vibration of the counterweight each time, the elevator can be operated safely.

In the elevator for the third floor, when the counterweight is located near the upper and lower center of the guide rope,
That is, since the counterweight is most likely to vibrate when the car is located on the second floor, it is effective to install the guide spring only at the stop position of the counterweight when the car stops on the second floor. . Further, in the elevator for the fourth floor, the guide spring may be installed only at the stop position of the counterweight when stopping on the second floor and the third floor.

Further, as shown in FIG. 11, the counterweight 6 may be tapered at the upper and lower ends thereof so that the counterweight can easily pass between the guide springs. The guide springs may be provided at three or more places around the counterweight. Further, a vibration proof rubber or a damper may be added in order to quickly damp the vibration of the counterweight.

[0048]

As described above, according to the present invention, since the guide rail for the counterweight, which has conventionally required high precision in mounting, is not required, the hoistway area of the elevator can be reduced and the installation work of the elevator can be simplified. Can be

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a perspective view of the counterweight shown in FIG.

FIG. 3 is another perspective view of the counterweight shown in FIG.

FIG. 4 is a side view showing a second embodiment of the present invention.

FIG. 5 is a perspective view showing a third embodiment of the present invention.

FIG. 6 is a side view showing a fourth embodiment of the present invention.

FIG. 7 is a side view showing a fifth embodiment of the present invention.

FIG. 8 is a side view showing a sixth embodiment of the present invention.

FIG. 9 is a side view showing a seventh embodiment of the present invention.

FIG. 10 is a side view showing an eighth embodiment of the present invention.

11 is a side view of the guide spring shown in FIG.

[Explanation of symbols]

1 ... Iron pillar, 2 ... Bracket, 3 ... Guide rail, 4 ... Car, 5 ... Car guide mechanism, 6 ... Counterweight, 7 ... Main rope, 8 ... Sheave, 9 ... Pulley, 10 ... Drive device, 11 ...
Guide rope, 12 ... Beam, 13 ... Compression spring.

Front page continued (72) Inventor Eiichi Sasaki 1070 Ichimo Ichi, Hitachinaka-shi, Ibaraki Hitachi Ltd. Mito Plant (72) Inventor Masaaki Ariga 1070 Ichige Ichika, Hitachinaka-shi, Ibaraki Hitachi Ltd. Mito Plant Within

Claims (9)

[Claims] 1. An elevator comprising a car, a counterweight, a rope having the car at one end, the rope having the counterweight attached at the other end, and a drive device for moving the car up and down, at least the counterweight. An elevator apparatus comprising at least one cord for guiding the counterweight, which is provided with a hole for passing one cord, and is fixed at an upper end and a lower end of a hoistway through the hole for the counterweight. 2. An elevator comprising a car, a counterweight, a rope having the car at one end and the balance weight at the other end, and a drive device for moving the car up and down, wherein the counterweight is up and down. An elevator apparatus comprising: a hollow member provided in all or a part of the range, and a mechanism for guiding the counterweight by passing the counterweight inside the hollow member. 3. A car, a counterweight, a rope having the car at one end, and a rope having the counterweight attached to the other end, a guide rail for guiding the car, an iron pillar for supporting the guide rail, and the car. In an elevator equipped with a drive device for moving up and down, in all or part of the range where the counterweight moves up and down, a hollow member fixed to the iron column is provided, and the counterweight is passed inside the hollow member. The elevator apparatus according to claim 2, further comprising a mechanism for guiding the counterweight. 4. The elevator apparatus according to claim 2, wherein a guide mechanism for sliding or rolling the inner wall of the hollow member is provided on the counterweight moving up and down inside the hollow member. 5. The elevator apparatus according to claim 2 or 3, wherein a horizontal cross section of the counterweight moving up and down inside the hollow member is formed to be asymptotically smaller toward upper and lower ends. 6. An elevator comprising a car, a counterweight, a rope having the car at one end, the rope having the counterweight attached at the other end, and a drive device for moving the car up and down, at least the balance weight. A hole for passing one cord is provided, and at least one cord for guiding the counterweight fixed at the upper and lower ends of the hoistway through the hole for the counterweight is provided, and the counterweight moves up or down. An elevator apparatus comprising a hollow member provided in a part of the range, and a mechanism for passing the counterweight inside the hollow member and guiding the counterweight accordingly. 7. A liquid enclosing container capable of injecting a liquid into the counterweight is provided, and a viscous fluid is enclosed in the liquid enclosing container to such an extent that the liquid enclosing container is not filled up with the liquid enclosing container. The elevator apparatus according to claim 1, further comprising a mechanism for damping the vibration of the counterweight by means of. 8. The elastic body for preventing shaking of the counterweight is provided in at least one of the stop positions of the counterweight corresponding to the position where the car stops on each floor. Elevator equipment. 9. The cord is supported on the hoistway via an elastic body so as to apply tension to the cord, and the elastic body length exceeds a predetermined length range. 2. The elevator apparatus according to claim 1, further comprising a safety device for detecting an emergency stop of the elevator when the elastic body length exceeds a predetermined length by the detection means.