JPH11228056A - Elevator thimble rod - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an elevator thimble rod for quickly performing a nut operation of a thimble rod in a main rope elongation correction work. SOLUTION: A thread portion 2c of a thimble rod attached to an end of a main rope in a rope type elevator or a rope type hydraulic elevator is a multi-threaded screw, for example, a double-threaded screw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator thimble rod used for mounting a main rope in a rope type or hydraulic type elevator.

[0002]

2. Description of the Related Art Conventionally, as an apparatus of this type, for example, as described in JP-A-4-317980,
A thimble rod is attached to each end of the main rope, the main rope is fixed to the car through the thimble rod, one is fixed to the stationary part, and the thimble rod has a screw and a nut that hinges thereto. Things have been suggested.

[0003]

In the above-mentioned conventional apparatus, although the specific configuration of the screw of the thimble rod is not mentioned, a single thread is usually used, and the rotation angle of the nut with respect to the rotation angle of the nut is usually used. The corner is relatively small,
In order to shorten the nut by a predetermined dimension, it is necessary to increase the rotation angle of the nut.

[0004] It is an object of the present invention to provide an elevator thimble rod in which when the effective length of the main rope is adjusted, the rotation angle of the nut can be reduced and the adjustment can be performed quickly.

[0005]

SUMMARY OF THE INVENTION The above object is achieved by a thimble rod attached to an end of an elevator main rope, wherein the thimble rod has a multi-threaded screw and a nut that is engaged with the multi-threaded screw. You.

As described above, in the case of a multi-threaded screw, for example, a double-threaded screw, the size required for the nut per rotation, that is, the lead is twice as large as that of the single-threaded screw. The rotation angle of the nut will be half. Therefore, the operation of adjusting the effective length of the main rope can be performed quickly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment in which the present invention is applied to a rope type hydraulic elevator will be described below with reference to FIGS.

[0008] The rope end of the main rope 9 in the hydraulic elevator is attached to a suspension plate 3 attached to the lower part of the car 1 via a thimble rod 2. The thimble rod 2 is connected to a rope socket 2a for fixing a main rope 9 with a hook pin 2b, and a buffer spring 5 is attached to the suspension plate 3 with an attachment nut 6. The screw portion 2c of the thimble rod 2 is a double thread. FIG. 2 shows the entire structure of the hydraulic elevator. The hydraulic elevator includes a plunger 10 housed in a cylinder 11.
Is pushed up by oil sent from a hydraulic unit (not shown). The ends of a plurality of main ropes 9 are connected to the car 1 and the cylinder base 13 via thimble rods 2 respectively. A part of the main rope 9 is hung on the pulley 12. When the plunger 10 is pushed up, the pulley 12 also goes up, and the car 1 goes up. A descent is the opposite. The main ropes 9 each time the running time of the hydraulic elevator increases
Grows over time. When the main rope 9 is extended, the mounting nut 6 is tightened to correct the extension of the rope. Further, when the main rope 9 is extended and the mounting nut 6 is tightened up to the end of the screw portion 2c of the thimble rod 2, a spacer is inserted between the suspension plate 3 and the buffer spring 5 to correct the rope extension.

The rope elongation correction operation is performed in the following manner.

An emergency stop device called a catch (car 1
) To prevent the car 1 from lowering, then lower the plunger 10 to loosen the main rope 9 and tighten the mounting nut 9. When the interference is insufficient, a spacer having a predetermined size is inserted between the suspension plate 3 and the buffer spring 5.

As described above, when the main rope 9 is loosened, the force required to rotate the mounting nut 6 is relatively small. Therefore, even if the thread portion 2c is formed as a double thread, the force required for rotation is substantially unnecessary. The rotation can be easily performed, and the rotation angle can be reduced to half (for one thread), so that the two mounting nuts 6 can be quickly tightened.

Although a double thread is most suitable for the hydraulic elevator, the invention is not limited to the double thread, but may be a multi-thread having three or more threads.

[0013]

As described above, according to the present invention, the elongation of the main rope can be corrected, that is, the operation of adjusting the effective length, particularly, the operation of operating the mounting nut of the thimble rod can be rapidly performed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a main part of an embodiment of the present invention.

FIG. 2 is a schematic explanatory view of a rope type hydraulic elevator to which the present invention is applied.

[Explanation of symbols]

 Reference Signs List 1 basket 2 thimble rod 2c screw part 3 hanging plate 6 mounting nut 9 main rope

Claims (1)

[Claims] 1. A thimble rod for an elevator, comprising: a thimble rod attached to an end of a main rope of the elevator, the thimble rod comprising a multi-thread screw and a nut which is fitted with the multi-thread screw.