JP2003146558A - Rope terminal regulating device of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rope terminal regulating device of an elevator, capable of easily screwing-up a thimble rod for regulation of a rope terminal length. SOLUTION: In this rope terminal length regulating device of the elevator, a car 4 and a balance weight 5 are connected by a plurality of ropes 6, and each rope terminal is attached to a suspending plate 40 through the thimble rod 42. The device comprises a nut engaging portion 61 engaging with a nut portion 47 of the thimble rod 42; reduction gears 63 for transmitting a rotation force to the nut engaging portion 61; and a rotating machine 66 for rotating the nut engaging portion 61 through the reduction gears 63. The reduction gears 63 and the rotating machine 66 are connected to a detachable connecting portion 64.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator rope terminal adjusting device in which a car and a counterweight are connected by a plurality of ropes, and each rope terminal is attached to a hanging plate via a thimble rod.

[0002]

2. Description of the Related Art In addition to equalizing the tensions of a plurality of ropes, the rope end adjustment work of an elevator is performed to secure a clearance between a counterweight and a counterweight buffer. Here, the outline of the overall configuration of the elevator for adjusting the rope terminals will be described with reference to FIG.

Reference numeral 2 is a guide rail of an elevator which is erected over the entire path of the hoistway 1, 2a is a rail bracket for fixing the guide rail 2, 7 is a hoisting machine installed on the bottom 1a of the hoistway 1, and 6 Is a rope driven by the hoist 7, 5 is a counterweight that moves up and down in the hoistway 1 relative to the car 4, and 12 is a weight buffer installed at the bottom 1a of the hoistway below the counterweight 5. Is.

The rope 6 is connected to a rope end 6a near the top 1b of the hoistway 1 by appropriate means, a car lower pulley 4a attached to the lower part of the car 4 and a pulley beam 8.
Via a turning pulley 8a provided on the hoisting machine, a sheave 7a of the hoisting machine of the hoisting machine 7, a turning pulley 8b, and a weighting pulley 5a provided on the counterweight 5, and the rope end 6b is connected to the hoistway. Is connected near the top 1b.

For the rope end adjustment work in the elevator having such a structure, for example, as described in Japanese Utility Model Laid-Open No. 57-49872, the thimble rod length adjusting nut of the rope end is turned with a spanner or the like. I was going.

[0006]

However, in the above-mentioned prior art, the rope end adjustment for securing the clearance of the counterweight requires a long tightening length of the thimble rod as compared with the above-mentioned tension adjustment work, and labor is required. Was required. In addition, since the load of the car and the counterweight must be adjusted with all the rope ends being applied, the tightening force of the thimble rod requires a considerably large force, which causes a problem of poor work efficiency.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an elevator rope terminal adjusting device capable of easily tightening a thimble rod in adjusting the rope terminal length.

[0008]

In order to achieve the above object, the present invention relates to an elevator rope in which a car and a counterweight are connected by a plurality of ropes, and each rope end is attached to a suspension plate via a thimble rod. In the length adjusting device of the terminal portion, a nut engaging portion that engages with the nut portion of the thimble rod, a speed reducer that transmits a rotational force to the nut engaging portion, and the nut engaging portion are the speed reducer. A rotating machine for rotating the rotating machine is provided, and the speed reducer and the rotating machine are connected by a removable connecting portion.

As described above, in the present invention, the torque of the rotating machine is amplified by using the reduction gear even when all the loads of the car and the counterweight are applied to the nut for adjusting the length of the thimble rod. Since the nut engaging portion that rotates via the reduction gear can rotate the nut for adjusting the length of the thimble rod, it is possible to easily tighten the thimble rod in adjusting the length of the rope end.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a plan view of an elevator rope terminal adjusting device according to an embodiment of the present invention,
2 is a sectional view taken along line AA of FIG. The overall structure of the elevator using the rope terminal adjusting device is, for example, as shown in FIG. 3, which has been outlined above.

In FIGS. 1 and 2, 40 is a rope end 6
A rope end bracket that supports a and 6b. An end portion of the rope 6 is connected to a thimble rod 42 by a socket 41. This thimble rod 42 has a threaded portion 43
The length adjusting nut 47 of the thimble rod 42 is screwed into the threaded portion 43 with the spring seat 44, the spring 45, and the washer 46 sandwiched between the rope end bracket 40 and the hole.

The rope terminal adjusting device 60 is constructed such that the outer peripheral portion 6 of the nut engaging portion 61 that engages with the length adjusting nut 47.
1a has a gear that meshes with the worm gear 63,
The nut engaging portion 61 and the worm gear 63 are held by the holding portion 62.

The worm gear 63 is provided with a connecting portion 64, which is detachably connected to the rotating portion 65 of the rotating machine 66. The rotating machine 66 is, for example, an electric tool for tightening screws.

Further, for example, a rod-shaped position regulating means 67 is attached to the upper surface of the holding portion 62, and the tip of the position regulating means 67 is adjacent to the thimble rod 42c on which the rope terminal adjusting device 60 is set. Is configured to abut.

Next, the procedure of the rope end length adjusting work using the rope end adjusting device 60 having the above configuration will be described.

In an elevator as shown in FIG. 3, a car 4
Stop near the upper part of the hoistway 1, board the ceiling 4b of the car 4 from the top floor hall 30, and attach the rope end adjusting device 60 to the nut 47 for adjusting the length of the thimble rod 42 supported by the rope end bracket 40. Install.

In this state, the rotating machine 66 of the rope terminal adjusting device 60 is operated to rotate the rotating portion 65, and the connecting portion 6
4 through the worm gear 63
To rotate. The rotational force of the rotating machine 66 is amplified and transmitted to the nut engaging section 61 by the worm gear 63 that is a speed reducer and the outer peripheral section 61a of the nut engaging section, so that the car 4 and the balance weight 5 on the thimble rod 42 are transmitted. Of the length adjustment nut 47 without difficulty even when all the loads of
Can be tightened up.

The rotation of the rope end adjusting device 60 itself due to the reaction force when the length adjusting nut 47 is closed causes the position regulating means 67 provided in the rope end adjusting device 60 to abut the adjacent thimble rod 42b. It can be held down by doing so.

As described above, according to this embodiment, even when all the loads of the car and the counterweight are applied to the length adjusting nut portion of the thimble rod, the speed reducer is used to drive the rotating machine. Since the nut for adjusting the length of the thimble rod can be rotated by the nut engaging portion that amplifies the torque and rotates through the speed reducer, it is possible to easily tighten the thimble rod in adjusting the length of the rope end.

In this embodiment, an example of a machine room-less elevator in which the hoisting machine is installed in the lower part of the hoistway is shown.
Even if the hoist is a machine room-less elevator located in the upper part of the hoistway or a machine room equipped elevator with 2: 1 roping, and even with 1: 1 roping, the installation of the device can be performed in the same manner. The same effect can be obtained.

In this embodiment, the position regulating means 67 is also provided.
Although it is configured to contact the threaded portion 43 of the thimble rod 42, another configuration may be used as long as the rotation of the rope terminal adjusting device 60 itself can be suppressed. For example, it is obvious that the member does not have to be a rod-shaped member, and the other side that abuts is not limited to the thimble rod 42, but may be a rope end bracket.

Further, in the case of the structure in which the thread portion 43 of the thimble rod 42 is brought into contact with the thread portion 43, the same effect can be obtained even if a cushion material is inserted to protect the thread portion 43, and this is within the scope of the present invention.

[0023]

As described above, the torque of the rotating machine is amplified by using the reducer even when all the loads of the car and the counterweight are applied to the nut for adjusting the length of the thimble rod. Since the nut engaging portion that rotates via the reduction gear can rotate the nut for adjusting the length of the thimble rod, it is possible to easily tighten the thimble rod in adjusting the length of the rope end.

[Brief description of drawings]

FIG. 1 is an apparatus plan view showing an embodiment of an elevator rope terminal adjusting apparatus of the present invention.

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

FIG. 3 is an overall schematic view of an elevator that performs rope terminal adjustment.

[Explanation of symbols]

4 car 4a Lower basket pulley 5 counterweight 5a Weight pulley 6 rope 40 rope end bracket 42 thimble rod 47 Length adjusting nut 60 Rope terminal adjustment device 61 Nut engaging part 63 Worm Gear 64 connection 66 rotating machine

Continued front page    (72) Inventor Mizuki Gomi             6-6 Kandanishikicho, Chiyoda-ku, Tokyo             Inside the Hitachi Building System F term (reference) 3F305 BB02 BC03 BC33 DA21

Claims (3)

[Claims] 1. A length adjusting device for a rope end portion of an elevator, wherein a car and a balance weight are connected by a plurality of ropes, and each rope end is attached to a hanging plate via a thimble rod. A nut engaging portion that engages with the nut engaging portion, a speed reducer that transmits a rotational force to the nut engaging portion, and a rotating machine that rotates the nut engaging portion via the speed reducer. The elevator rope terminal adjusting device, wherein the rotating machine is connected by a removable connecting portion. 2. The elevator rope terminal adjusting device according to claim 1, wherein a worm gear is used for the speed reducer. 3. The rope end adjusting device according to claim 1, wherein the rope terminal adjusting device is provided with a position restricting means for restricting rotation of the device main body within a rotation surface of the nut engaging portion. An elevator rope terminal adjusting device characterized by: