JP2934924B2 - Elevator main rope holding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator, and more particularly to an elevator main rope holding device suitable for providing a terminal of a main rope in a machine room.

[0002]

2. Description of the Related Art In general, an elevator hangs a car and a counterweight on a sheave of a driving device driven by a driving motor in a sane shape via a rope. The driving force of the electric motor is transmitted to a driving device, and the sheave is driven to raise and lower the car.

[0003] This elevator system has a standard 1: 1 roping case and a 2: 1 installation of a rope terminal in the machine room with pulleys on the car and the counterweight.
There is roping or multiple roping. This 2:
The structure of the rope terminal in the case of a plurality of ropings represented by one roping is provided in an elevator machine room as described in, for example, Japanese Utility Model Laid-Open No. 60-96363. The structure is shown in FIG. 9 and FIG.

FIG. 9 shows a sectional structure of a machine room and a hoistway of a 2: 1 roping elevator system. FIG. 10 is a sectional view taken along line AA of FIG.
2, the electric motor 33, the driving device 34, the sheave 35 and the rope 36 are shown. A car 37 is suspended by a rope 36 in a hanging manner, and a counterweight 38 is provided with a car pulley 39 and a counterweight pulley 40, respectively. The rope ends are the thimble rod 43 and the spring 44 of the machine room 32.
It is connected to. The thimble rod 43 is provided on a plate 46 of a sub-beam 45 provided outside the machine beam 42.
It is installed in. This elevator system includes a sub-beam 45 for a rope terminal in addition to a machine beam 42 on which an elevator motor 33 and a driving device 34 are mounted.
Is required, and the installation space of the machine room 32 becomes large, which is extremely disadvantageous in planning and designing an elevator arrangement. In addition, there is a lack of consideration for the workability during the installation work of the elevator, and the workability is reduced. This is a bottleneck in reducing the number of work steps and shortening the work period. For this reason, there is a problem that it is not suitable for the trend of shortening the period of the elevator construction in recent years.

As described in Japanese Utility Model Laid-Open No. 52-133461, there is a structure in which a second machine room is provided and a rope terminal is provided on a machine beam. This structure is shown in FIGS. In this case, since the machine beam 47 is provided with a rope terminal, the driving device 35 and the machine beam 47 enter the projection area when arranging the machine room 32, so that the installation space is efficient and the installation space is small. Although the problem may be solved, the second machine room 31 may not be provided depending on the building. Providing the second machine room is contrary to the improvement in workability.

Further, a structure shown in FIG. 13 in which a rope terminal is provided in the machine beam 49 of the machine room 32 by combining the above-mentioned known examples can be considered, but in this case, there is a problem in maintainability including a rope tension adjusting operation. .

That is, since the driving device 34 and the electric motor 33 are installed on the machine beam 49, it is not easy to inspect and adjust the inner rope terminal portion of the machine beam 49 during the rope tension adjusting operation. Therefore, if the rope tension adjustment operation is neglected, the tension of each rope becomes uneven, and a load is applied to a specific rope, and the rope tension becomes excessive. This leads to a problem that the rope strand is broken at an early stage, and if it is overlooked during maintenance and inspection, the rope strand breaks, giving the elevator passengers an unnecessary feeling of uneasiness, and thus reducing safety.

[0008]

In the conventional elevator main rope holding device, it is necessary to increase the space in the machine room where the rope terminal is installed, the workability of the installation work is reduced, and the maintenance and inspection are performed. However, there were problems in shortening the construction period and ensuring safety.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an elevator main rope holding device capable of improving the maintainability of a rope and the safety of an elevator while taking into consideration the ease of installation and workability of an elevator machine room.

[0010]

In order to achieve the above-mentioned object, an elevator main rope holding device according to the present invention is suspended in a hoistway, and is provided on each of a riding basket and a counterweight which moves up and down the hoistway. A rope terminal of a plurality of ropes forming a main rope wound around a pulley provided and partially wound around a sheave of a driving device installed in a machine room at the top of the hoistway is provided in the machine room. In the elevator main rope holding device held by a plurality of holding members, each holding member is arranged inside and outside of the machine beam supporting the driving device, and one of the rope ends of each rope is attached to the machine beam. It is configured to be arranged outside of.

[0011] One of the rope terminals and the other of the rope terminals may be arranged in a staggered manner in the longitudinal direction of the machine beam via the machine beam.

[0012] Further, one of the rope terminals and the other rope terminal are arranged in a staggered manner in the longitudinal direction of the machine beam via the machine beam, and the positions of the other rope terminals are respectively set. In addition to providing an indicating member for displaying, the machine beam may be provided with a detection hole for detecting each indicating member.

Further, the machine beam may be formed of an H-shaped steel having a flange fixed to each end.

A sheave of a driving device suspended in the hoistway, wound around pulleys provided on each of the elevator cars and the counterweights to ascend and descend in the hoistway, and installed in a machine room at the top of the hoistway. In the elevator main rope holding device that holds the rope ends of a plurality of ropes forming a main rope partially wound around by a plurality of holding members provided in the machine room, the inside of the machine beam supporting the driving device A configuration in which each holding member is arranged on the outside and the outside, one of the rope ends of each rope is arranged outside the machine beam, and the other rope end is arranged inside and connected by a fixing plate. May be.

A drive sheave suspended from the hoistway, wound around pulleys provided on each of the riding weights and the counterweights for elevating the hoistway, and installed in a machine room at the top of the hoistway. In the elevator main rope holding device that holds the rope ends of a plurality of ropes forming a main rope partially wound around by a plurality of holding members provided in the machine room, the inside of the machine beam supporting the driving device And each holding member is arranged on the outside and one of the rope ends of each rope is arranged outside the machine beam, the other rope end is arranged inside and connected by a fixing plate, The detection hole of the fixed plate may be provided in the machine beam.

Further, the fixing plate may have a configuration in which the plurality of rope terminals on the sheave side and the plurality of rope terminals on the counterweight side are restrained.

The machine beam may be provided with at least one detection hole substantially at the center in the height direction and in the length direction.

A sheave of a drive unit suspended in the hoistway, wound around pulleys provided on each of the rider and the counterweight that goes up and down in the hoistway, and installed in a machine room at the top of the hoistway. In the elevator main rope holding device that holds the rope ends of a plurality of ropes forming a main rope partially wound around by a plurality of holding members provided in the machine room, the inside of the machine beam supporting the driving device Each holding member may be arranged on the outside and the outside, and each holding member may be formed by a thimble rod and a cushioning material attached to the thimble rod.

Furthermore, in the elevator main rope holding method, the machine room at the top of the hoistway is suspended from the hoistway, wrapped around pulleys provided on each of the cars and the counterweights that move up and down the hoistway. The elevator main rope holding method of holding a plurality of rope terminals of a plurality of ropes forming a main rope partially wound around a sheave of a driving device installed in a machine room by a plurality of holding members provided in a machine room. Each holding member is arranged inside and outside the machine beam supporting the device, one of the rope ends is arranged outside the machine beam, and the other rope end is arranged inside. Then, the detection holes of the fixing plate are provided substantially at the center in the height direction of the machine beam to prevent the strength of the machine beam from being reduced.

In the elevator main rope adjustment method, the machine room at the top of the hoistway is suspended from the hoistway, wrapped around pulleys provided on each of the elevator cars and the counterweights that move up and down the hoistway. An elevator main rope adjusting method for adjusting a plurality of ropes forming part of a main rope held by a plurality of holding members provided in a machine room, with a part thereof being wound around a sheave of a driving device installed in the driving device, Each of the holding members is arranged inside and outside the machine beam for supporting the rope, one of the rope ends of each rope is arranged outside the machine beam, and the other rope end is arranged inside. Then, the tension adjustment of half of the rope ends is performed from the outside of the machine beam to adjust the tension of each rope.

[0021]

According to the present invention, since one end of the rope end is disposed outside the machine beam, it is sufficient to pay attention to only the outer rope end when adjusting the rope tension. In addition, since the driving device and the motor are installed above the machine beam, the installation space of the machine room is small, the space efficiency of the machine room equipment is good, and a separate sub-beam for installing the rope terminal is required during installation work. Is also gone.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a longitudinal sectional view of an elevator showing a section of an elevator shaft and a machine room, and FIG. 2 is a sectional view taken along line BB of FIG.
It is a structural view of the elevator which shows a line cross section.

As shown in FIG. 1, a drive unit 4 and a motor 3 are provided in a machine room 2 formed at the top of a hoistway 1, and a machine beam 12 for supporting the same is provided. A main rope formed by a plurality of ropes 6 is wound around the sheave 5 of the driving device 4, one end is suspended from a car, and the other end is suspended on a counterweight 8 side, and a car pulley 9 and a suspension provided respectively are provided. A rope terminal is installed on the machine beam 12 of the machine room 2 while being wound around the weight pulley 10. Each rope end is connected to a thimble rod 13 and is configured to be elastically supported by a spring 14. The holding member is formed by a thimble rod and a cushioning material such as a spring.

Each of the rope ends is disposed on both sides of the H-beam of the machine beam 12 as shown in FIG. 2. FIG. 3 is a structural diagram showing details of the arrangement of the rope ends. FIG.
2 shows a cross section taken along line CC of FIG. FIG. 3 shows the electric motor 3, the driving device 4, the sheave 5, the beam pulley 11, the car pulley 9, and the counterweight pulley 10. R1, R2, R3, R4 and R5 of the rope ends are arranged in a staggered manner on both sides of the machine beam 12 in the length direction of the H-shaped steel.

Here, the group of rope terminals on the sheave 5 side and the group of rope terminals on the beam pulley 11 side are arranged so as to be symmetrical on the sides facing each other with a center point between both groups. is there. In other words, rope No.
If one end is arranged outside the machine beam 12, the rope terminal at the other end is arranged inside (the side where the driving device 4 is installed), and each rope from No. 1 to No. 5 One end of the terminal is always disposed outside the machine beam 12.

FIGS. 4 and 5 show details of the structure of the rope terminal. 4 is a structural view of the rope terminal viewed from the opposite side when the machine beam is outside, that is, the side on which the driving device 4 is installed is inside, and FIG. 5 is a structure showing a cross section taken along line DD of FIG. FIG.

FIG. 4 shows the machine beam 12, the thimble rod 13, the springs 14, 15, the spring seat 16, and the nut 17. R1, R3, and R5 indicate the rope terminals, and a detection hole 18 is provided between the rope terminals R1 and R3.
h2, a detection hole 18h4 is provided between the rope terminals R3 and R5.

The structure of the rope ends inside and outside the machine beam 12 is shown in FIG. An indication member 19 fixed by a nut 17 and a nut 20 is provided at a rope terminal R2 disposed inside the machine beam 12, and the spring length L2 of the spring 14 indicating the tension of the rope is determined by the height of the machine beam 12. The spring length L2 can be confirmed on the scale displayed on the detection hole 18h2 from the outside of the machine beam 12, that is, from the opposite side where the driving device 4 is installed, through the detection hole 18h2 provided substantially at the center in the vertical direction. ing. Further, a reduction in the intensity of the machine beam is prevented.

With the above configuration, the rope 6
Can be adjusted from the side where the inspection space outside the machine beam 12 is wide. That is, the machine beam 12
Check the length of the spring of the rope end inside the outside of the beam, after measuring the length of the spring outside the beam, the length of the outside spring until the difference between each spring length reaches a predetermined value To adjust. After the adjustment, the car is operated at appropriate times to make the car-side rope tension and the counterweight-side rope tension equal, and then check the spring length again. By repeating this procedure, the rope tension of each of the rope terminals R1 to R5 is evenly adjusted.

According to the present embodiment, the rope tension adjustment work is facilitated, the maintainability can be improved, and troubles such as neglecting the rope adjustment, damage to the rope, and breakage of the strand can be prevented. Is also improved.

Also, the driving device 4 and the electric motor 3 shown in FIGS. 1 and 2 are arranged on the machine beam 12 and the respective rope terminals R1 to R5 are arranged on the H-beam of the machine beam 12. In addition, the installation space can be reduced when planning the arrangement of the equipment in the machine room 2, and the ease of installation of the equipment in the machine room is good.

Further, there is no need to provide a beam member for the rope terminal other than the machine beam 12, and the machine beam 1
Since 2 serves as an indicating member of the driving device 4 and also serves as an indicating device of the rope terminal, the workability can be significantly improved.

Next, another embodiment will be described with reference to FIGS.

FIG. 6 shows a state in which the rope terminals are arranged on the machine beam as shown in FIG. 3, and then the rope terminals on the driving device 4, that is, the rope terminals R2 and R4 on the sheave 5, and the rope terminals on the beam pulley. R1, R3, and R5 are connected by a fixing plate 21 to restrain them. As a result, the rope terminals on the drive unit 4 side are R2 and R4 on the sheave side,
Further, the spring is displaced integrally with R1, R3 and R5 on the beam pulley side. For this reason, in this main rope adjustment method, since the tension is unbalanced at the rope terminal outside the driving device, half of the outer rope terminal may be maintained,
The rope tension adjustment work becomes easy, and maintainability is improved.

FIG. 7 shows the embodiment of FIG. 6 in which a detection hole 18h2 is provided in order to confirm from the outside of the machine beam whether the fixing plate for restraining the rope end is inclined or not.
The maintainability can be further improved.

[0037]

According to the present invention, the space for arranging the equipment in the elevator machine room can be reduced, so that the installation property is good.
Installation workability can also be improved. Further, maintenance of the rope terminal is facilitated, and the safety of the elevator can be improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a hoistway and a machine room showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG.

FIG. 3 is a sectional view taken along line CC of FIG. 2;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a sectional view taken along line DD of FIG. 3;

FIG. 6 is a configuration diagram showing another embodiment of the present invention.

FIG. 7 is a configuration diagram showing another embodiment of the present invention.

FIG. 8 is a configuration diagram showing another embodiment of the present invention.

FIG. 9 is a vertical sectional view showing a conventional technique.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

FIG. 11 is a perspective view showing a conventional technique.

FIG. 12 is a diagram showing a conventional technique.

FIG. 13 is a diagram showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Machine room 3 Electric motor 4 Drive device 5 Sheave 6 Rope 7 Riding car 8 Balancing weight 9 Riding car pulley 10 Balancing weight pulley 11 Beam pulley 12 Machine beam 13 Thimble rod 14 Spring 18 Detection hole 19 Indicator member 21 Fixing plate

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kiyoshi Eguchi 1070 Ma, Katsuta-shi, Ibaraki Pref.Hitachi, Ltd.Mito Plant, Hitachi Ltd. (72) Inventor Kei Kei Uwa 1070, Ma, Katsuta-shi, Ibaraki, Mito Plant, Hitachi, Ltd. (56) References JP-A-5-139658 (JP, A) JP-A-58-140964 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B66B 7/08

Claims (4)

(57) [Claims] 1. A drive device suspended in a hoistway, wound around pulleys provided on each of a riding basket and a counterweight that moves up and down the hoistway, and installed in a machine room at the top of the hoistway. In the elevator main rope holding device that holds the rope ends of a plurality of ropes forming a main rope partially wound around the sheave by a plurality of holding members provided in the machine room, the driving device is supported. An elevator main rope holding device, wherein each holding member is arranged inside and outside a machine beam, and one of the rope ends of each rope is arranged outside the machine beam. 2. A drive device suspended in a hoistway, wound around pulleys provided on each of a riding car and a counterweight that moves up and down the hoistway, and installed in a machine room at the top of the hoistway. In the elevator main rope holding device that holds the rope ends of a plurality of ropes forming a main rope partially wound around the sheave by a plurality of holding members provided in the machine room, the driving device is supported. Arranging each holding member on the inside and outside of the machine beam, arranging one of the rope ends of each rope outside the machine beam, and arranging the other rope end on the inside. An elevator main rope holding device connected by a fixing plate. 3. A drive device suspended in a hoistway, wound around pulleys provided on each of a riding car and a counterweight that moves up and down the hoistway, and installed in a machine room at the top of the hoistway. In the elevator main rope holding device that holds the rope ends of a plurality of ropes forming a main rope partially wound around the sheave by a plurality of holding members provided in the machine room, the driving device is supported. Arranging each holding member on the inside and outside of the machine beam, arranging one of the rope ends of each rope outside the machine beam, and arranging the other rope end on the inside. A main rope holding device for an elevator, wherein the main beam is connected by a fixing plate, and a detection hole of the fixing plate is provided in the machine beam. 4. A driving device suspended in a hoistway, wound around pulleys provided on each of a riding car and a counterweight that moves up and down the hoistway, and installed in a machine room at the top of the hoistway. In the elevator main rope holding device that holds the rope ends of a plurality of ropes forming a main rope partially wound around the sheave by a plurality of holding members provided in the machine room, the driving device is supported. An elevator main rope holding device, wherein each holding member is arranged inside and outside a machine beam, and each holding member is formed by a thimble rod and a cushioning material attached to the thimble rod.