WO2023282029A1

WO2023282029A1 - Elevator compensation rope pull-up device and elevator compensation rope pull-up method

Info

Publication number: WO2023282029A1
Application number: PCT/JP2022/024358
Authority: WO
Inventors: 圭三村田
Original assignee: 三菱電機ビルソリューションズ株式会社
Priority date: 2021-07-05
Filing date: 2022-06-17
Publication date: 2023-01-12
Also published as: JP2023008280A; CN116472243B; KR20230045110A; KR102539705B1; JP7131663B1; CN116472243A

Abstract

In this invention, a compensation shackle rod is connected to the end of a compensation rope, and the compensation rope is suspended from a counterweight by inserting the compensation shackle rod from below into a through hole in the mounting portion of the counterweight and fastening an adjusting nut from above the mounting portion. This compensation rope pull-up device comprises: a connection tool having one end that is provided with a nut portion to be screwed on the leading end of the compensation shackle rod and another end that is provided with a hook portion; a hoist connected to the hook portion; and a rope that suspends the hoist from the rectangular frame of the counterweight so that the hoist is positioned above the connection tool.

Description

Elevator Compensation Rope Pulling Device and Elevator Compensation Rope Pulling Method

The present disclosure relates to an elevator compensating rope lifting device and an elevator compensating rope lifting method that are suitable for use in an elevator compensating rope trimming operation.

Patent Document 1 discloses a device for adjusting the clearance under the compensatory. This device is equipped with upper and lower two stage rope fixing brackets that can be detachably attached in a horizontal position to the vertical frame of the counterweight. Ends of two compensating ropes are fixed to each of the upper and lower rope fixing brackets. A simple screw-type lifting mechanism is provided between the upper and lower rope fixing brackets. By operating the simple lifting mechanism, the compen rope is pulled up for each rope fixing bracket.

Japanese Patent Application Laid-Open No. 2020-7120

Since the simple lifting mechanism of Patent Document 1 is a screw type, it is required to tighten the nut when lifting the compensating rope. Tightening the nut while tension is applied to the compensating rope may be a heavy task for the operator.

The present disclosure has been made to solve the above-described problems, and provides an elevator compensating rope lifting device and an elevator compensating rope lifting method that can reduce the burden on workers in the work of pulling up the compensating rope. intended to

The present disclosure applies to an elevator compensating rope hoisting device for hoisting a compensating rope suspended from a counterweight in an elevator hoistway. A compensating shackle rod is connected to the end of the compensating rope, and the compensating rope is balanced by inserting the compensating shackle rod into the through-hole of the mounting portion of the counterweight from below and tightening the adjustment nut from above the mounting portion. Suspended by a weight. The compensating rope lifting device includes a connection tool having a nut portion screwed to the tip of the compensating shackle rod at one end and a hook portion provided at the other end, a hoist connected to the hook portion, and a rectangular frame of a counterweight. a rope for hanging the hoist from above the connecting tool.

The present disclosure also applies to an elevator compensating rope hoisting method for hoisting a compensating rope suspended from a counterweight in an elevator hoistway. A compensating shackle rod is connected to the end of the compensating rope, and the compensating rope is balanced by inserting the compensating shackle rod into the through-hole of the mounting portion of the counterweight from below and tightening the adjustment nut from above the mounting portion. Suspended by a weight. The method of pulling up the compen rope consists of a step of screwing the nut part of a connection tool, which has a nut part at one end and a hook part at the other end, to the tip of the compen shackle rod, and a hoist from the rectangular frame of the counterweight. It includes a step of hanging, a step of hooking the hook of the hoist on the hook, a step of operating the hoist to pull up the connection tool, and a step of tightening the adjustment nut.

According to the elevator compensating rope lifting device of the present disclosure, the hoist is connected to the connection tool screwed to the tip of the compensating shackle rod. The hoist is then suspended by ropes from the rectangular frame. According to such a configuration, the compensating shackle rod and the compensating rope can be easily pulled up by operating the hoist to pull up the connection tool. This makes it possible to reduce the burden on the worker when tightening the adjusting nut.

It is a figure which shows the example of the elevator apparatus in embodiment. FIG. 2 is a diagram of the elevator apparatus viewed from the direction AA of FIG. 1; FIG. 3 is a partially enlarged view enlarging a B portion of FIG. 2; It is a figure which shows the state which attached the compen rope pulling-up apparatus of embodiment. It is a figure for demonstrating the structure of a connection tool. FIG. 3 is a view for explaining the process of attaching the connecting tool, and is a partially enlarged view of the B portion of FIG. 2 ; FIG. 3 is a view for explaining the process of attaching the connecting tool, and is a partially enlarged view of the B portion of FIG. 2 ; It is a figure for demonstrating the pulling-up process of a compen rope, and is the elements on larger scale which expanded the B section of FIG. It is a figure for demonstrating the pulling-up process of a compen rope, and is the elements on larger scale which expanded the B section of FIG.

Embodiments will be described below with reference to the drawings. In addition, the same code|symbol is attached|subjected to the element which is common in each figure, and the overlapping description is abbreviate|omitted.

Embodiment.
1. Configuration of Elevator Apparatus According to Embodiment FIG. 1 is a diagram showing an example of an elevator apparatus according to an embodiment. FIG. 2 is a diagram of the elevator apparatus viewed from the direction AA in FIG. The elevator system comprises a car 1 and a counterweight 2. The car 1 forms an internal space by connecting a plurality of panel members to each other. The car 1 moves up and down in the hoistway 3 . The counterweight 2 moves up and down on the rear side of the car 1 in the hoistway 3 . Car 1 and counterweight 2 are suspended in hoistway 3 by main ropes 4 .

The main rope 4 is wound around the drive sheave 6 of the hoisting machine 5. When the drive sheave 6 rotates, the main rope 4 moves in a direction corresponding to the direction in which the drive sheave 6 rotates. The car 1 ascends or descends according to the direction in which the main rope 4 moves. Movement of the car 1 is guided by guide rails 9 .

The guide rail 9 is provided in a straight line in the vertical direction. The guide rail 9 is arranged from the pit 3 a of the hoistway 3 to the top of the hoistway 3 . The pit 3 a is a space formed below the landing 10 on the lowest floor of the hoistway 3 . The car 1 is arranged between two guide rails 9 .

The counterweight 2 includes a rectangular frame 20 and weight pieces 24 arranged within the frame of the rectangular frame 20 . The counterweight 2 moves in the hoistway 3 on the back side of the car 1 in a direction opposite to the direction in which the car 1 moves. Movement of the counterweight 2 is guided by guide rails 14 .

The guide rail 14 is provided in a straight line in the vertical direction. The guide rail 14 is arranged from the pit 3 a of the hoistway 3 to the top of the hoistway 3 . A counterweight 2 is arranged between two guide rails 14 .

The counterweight 2 is provided with guide shoes 22, for example. The four guide shoes 22 are fixed to both upper and lower ends of the rectangular frame 20 so as to be slidably engaged with the guide rails 14 .

In this way, the car 1 and the counterweight 2 are suspended by the main rope 4 in a crane-like manner that ascends and descends in opposite directions within the hoistway 3 . That is, the main rope 4 suspends the car 1 and the counterweight 2 in the hoistway 3 by a 1:1 roping method. Note that the car 1 and the counterweight 2 may be suspended by a plurality of main ropes 4 . In the elevator system of this embodiment, three main ropes 4 are used.

The compensation rope 30 is a rope for correcting the imbalance between the weight on the car 1 side and the weight on the counterweight 2 side as seen from the hoisting machine 5 . One end of the compensating rope 30 is connected to the lower portion of the car 1 . A compen rope 30 is suspended from the car 1 . A compensive 32 is rotatably provided in the pit 3 a of the hoistway 3 . The compensating rope 30 is wound around the compensating sleeve 32 .

The other end of the compensating rope 30 is connected to the mounting portion 26 of the counterweight 2 via a compensating shackle rod 34 . That is, the compen rope 30 is suspended from the counterweight 2 . The attachment portion 26 is a component attached so as to extend between the left and right vertical beams 20a of the rectangular frame 20. As shown in FIG. One end of the compensating rope 30 is fixed and connected to one end of the compensating shackle rod 34 .

FIG. 3 is a partially enlarged view of the B section of FIG. The attachment portion 26 in FIG. 3 shows a cross section taken along a plane including the central axis of the compensating shackle rod 34 . The mounting portion 26 is provided with a through hole 26a for passing the compensating shackle rod 34 therethrough. The other end of the compensating shackle rod 34 is inserted through the through-hole 26a from below, and an adjusting nut 36 and a fixing nut 38 are fastened to the mounting portion 26 from above. The adjusting nut 36 is for adjusting the hanging length of the compensating rope 30, that is, the clearance between the compensating sheave 32 and the floor surface of the pit 3a. The clearance between the compensive 32 and the floor surface of the pit 3a increases when the adjusting nut 36 is tightened, and decreases when it is loosened. A fixing nut 38 is a nut for preventing rotation of the adjusting nut 36 .

2. Configuration of Compen Rope Pulling Apparatus of Embodiment The main rope 4 and the compen rope 30 of the elevator undergo elongation over time. When the main rope 4 and the compensating rope 30 are stretched, the position of the compensating sieve 32 is lowered. In order to secure the clearance between the lower part of the compensating sheave 32 and the floor surface of the pit 3a, the work of tightening the adjusting nut 36 of the compensating shackle rod 34 is performed periodically.

Here, the compensating shackle rod 34 receives the weight of the compensating rope 30 and the compensating sheave 32 . Therefore, the work of tightening the adjustment nut 36 requires labor and may damage the thread of the compensating shackle rod 34 .

The compensating rope lifting device of the present embodiment is a device for pulling up the compensating rope 30 during such tightening work. FIG. 4 is a diagram showing a state in which the compen rope lifting device of the present embodiment is attached. The compen rope lifting device comprises a connecting tool 40 , a hoist 50 , a rope 54 and a U-ring 56 .

The connecting tool 40 is a tool connected to the tip of the compensating shackle rod 34 . FIG. 5 is a diagram for explaining the configuration of the connecting tool. The connecting tool 40 includes a body portion 42 , a high nut 44 and a locking nut 46 . A threaded portion 42a having the same nominal diameter and pitch as the compensating shackle rod 34 is formed on the distal end side of the body portion 42 . A hook portion 42 b is formed on the distal end side of the body portion 42 . The hook portion 42b has a circular hole formed in the center of its circular outer shape. The high nut 44 as a nut portion connects the main body portion 42 and the compensating shackle rod 34 by screwing one end thereof onto the threaded portion 42 a and screwing the other end onto the compensating shackle rod 34 . The dimensions of the high nut 44 are, for example, M16×50 mm. A mark 42c indicating a proper position of the high nut 44 is provided on the threaded portion 42a. Typically, the landmarks 42c are line markings. A fixing nut 46 is a nut for preventing rotation of the high nut 44 .

The hook portion 42b of the connection tool 40 is connected to the hook of the hoist 50 via the U-shaped ring 52. A hoist 50 is a tool for pulling up an object. Typically the hoist 50 is a chain block. The driving method of the hoist 50 is not limited. For example, the hoist 50 may be electric or manual.

The hoist 50 is suspended above the connection tool 40 by two ropes 54 . The rope 54 is, for example, a metal loop-shaped wire rope. Alternatively, the rope 54 may be a wire rope with loops formed at each end. Left and right vertical beams 20a of the rectangular frame 20 are provided with a plurality of holes 20b along the height direction for mounting holding members for holding down the upper portions of the weight pieces 24. As shown in FIG. Typically, one ends of the two ropes 54 are connected to the left and right holes 20b of the rectangular frame 20 via U-shaped rings 56, respectively. The other ends of the two ropes 54 are hooked on the body hooks of the hoist 50, respectively. As a result, the hoist 50 is suspended so as to be positioned at the center of the rectangular frame 20 in the left-right direction and above the connecting tool 40 . When the connection tool 40 is pulled up by the hoist 50 in such a connected state, the compensating shackle rod 34 is pulled up. As a result, no load is applied to the adjusting nut 36 in the axial direction, so that the operation of tightening the adjusting nut 36 can be easily performed.

3. Procedure for Pulling Up Work Using Compensation Rope Pulling Device Next, a procedure for pulling up the compensation rope 30 using the compensation rope pulling device according to the embodiment will be described in detail. Hereinafter, the operation of pulling up the central compensating rope 30 of the three compensating ropes 30 will be illustrated, but the same applies to the left compensating ropes 30 and the right compensating ropes 30 .

Preparatory Step: Lockdown Removal Step If the elevator device is equipped with a safety device called a lockdown for suppressing the jumping of the compensive 32, the operator removes the lockdown as a preliminary preparation.

First Step: Attaching Hoist 50 In the first step of the work, the worker uses the U-shaped ring 56 to fix one end of the loop of the two ropes 54 to the left and right holes 20b of the rectangular frame 20, respectively. At this time, the worker selects the hole 20b that allows the hoist 50 suspended from the rope 54 to be arranged above the connection tool 40 attached in a post-process. The worker hooks the other ends of the loops of the two ropes 54 onto the main hook of the hoist 50 . Thereby, the hoist 50 is suspended above the connecting tool 40 by the two ropes 54 .

Second Step: Step of Attaching Connection Tool 40 In the second step of the work, the worker fixes the connection tool 40 to the tip of the compensating shackle rod 34 . 6 and 7 are views for explaining the process of attaching the connecting tool, and are partially enlarged views of the B portion of FIG. 2 . The worker removes a split pin (not shown) attached to the compensating shackle rod 34 . Next, as shown in FIG. 6, the worker screws the fixing nut 46 and the high nut 44 onto the threaded portion 42a of the main body 42 in order to expose the tip of the threaded portion 42a to the outside. Then, the operator brings the tip of the threaded portion 42 a of the connection tool 40 into close contact with the tip of the compensating shackle rod 34 .

Next, as shown in FIG. 7, the worker rotates the high nut 44 in the removal direction until the mark 42c is exposed. The worker then fixes the high nut 44 with the fixing nut 46 .

Third Step: Pulling Up the Compensation Rope 30 In the third step of the operation, the operator pulls up the compensation shackle rod 34 and the compensation rope 30 . 8 and 9 are diagrams for explaining the process of pulling up the compensating rope, and are partially enlarged views in which the B portion of FIG. 2 is enlarged. The operator attaches a rotation stop device (not shown) to the compensating shackle rod 34 so that the compensating shackle rod 34 does not rotate when the compensating rope 30 is pulled up. There is no limitation on the type of detent device. Next, the worker attaches the U-shaped ring 52 to the hook portion 42b of the connection tool 40. As shown in FIG. Next, the worker hooks the hook 50 a of the hoist 50 to the U-shaped ring 52 .

Next, as shown in FIG. 8, the worker operates the hoist 50 to lift the hook 50a. Thereby, the compensating shackle rod 34 and compensating rope 30 are pulled up. The lift amount here is the lift amount for the clearance between the compensive 32 and the floor surface of the pit 3a to be the specified value. Next, as shown in FIG. 9, the operator loosens the fixing nut 38, tightens the adjusting nut 36, and then tightens the fixing nut 38 again. Next, the worker removes the hook 50 a of the hoist 50 from the U-shaped ring 52 . Then, the operator removes the connection tool 40 by performing the procedure in reverse order of the second step.

The worker performs the work of the second process and the third process for all of the multiple compensating ropes 30. Then, the operator retightens the fixing nut 38 and then attaches a split pin to the compensating shackle rod 34 . Next, the worker confirms whether or not the tensions of the plurality of compensating ropes 30 are uneven. Finally, workers install the lockdown and the lifting operation is completed.

4. Actions and effects of compen rope hoisting device According to the compen rope hoisting device and hoisting method described above, the following actions and effects are obtained.

Since the adjusting nut 36 is tightened while the compensating rope is pulled up, it is possible to reduce the labor of the operator and protect the thread of the compensating shackle rod 34.

The threaded portion 42a of the connecting tool 40 is marked with a mark 42c indicating the appropriate position of the high nut 44, which improves workability. Further, since the fixing nut 46 is attached to the connection tool 40, it is possible to prevent the high nut 44 from unintentionally coming off the threaded portion 42a.

Since the hooking portion 42b has a circular hole formed in the center of its circular outer shape, the angle of the U-shaped ring 52 with respect to the hooking portion 42b can be freely changed. As a result, even the compensating shackle rod 34 located at a position deviated from directly under the hoist 50 can be pulled up without any problem.

The hoist 50 is fixed by ropes 54 from each of the left and right vertical beams 20a of the rectangular frame 20, so that the hoist 50 can be prevented from wobbling in the left-right direction.

Since the holes 20b used for fixing the weight pieces 24 are used to fix the rope 54 to the rectangular frame 20, the rope 54 can be easily and firmly attached.

5. Modified Example of Compensating Rope Pulling Device The compensating rope pulling device of the embodiment may be modified as follows.

The high nut 44 may be fixed to the tip of the main body 42 by welding or the like. In this case, the worker may rotate the connecting tool 40 itself to screw the high nut 44 onto the tip of the compensating shackle rod 34 . With such a configuration, the connection tool 40 does not require the configuration of the screw thread of the threaded portion 42a and the fixing nut 46 .

The attachment position of the rope 54 is not limited to the vertical beam 20b of the rectangular frame 20. That is, the rope 54 may be, for example, the upper beam of the rectangular frame 20 as long as the hoist 50 can be suspended.

The compen rope lifting device may use a plurality of connection tools 40 at the same time to pull up a plurality of compen ropes 30 at the same time. In this case, the hooks 50 a of the hoist 50 are hooked on the plurality of connection tools 40 via the U-shaped rings 52 .

1 cage, 2 counterweight, 3 hoistway, 3a pit, 4 main rope, 5 hoisting machine, 6 drive sheave, 9 guide rail, 10 platform, 14 guide rail, 20 rectangular frame, 20b hole, 22 guide shoe, 24 weight piece, 26 mounting part, 26a through hole, 30 compensating rope, 32 compensating sheave, 34 compensating shackle rod, 36 adjusting nut, 38 fixing nut, 40 connecting tool, 42 body part, 42a screw part, 42b hook part, 42c Mark, 44 high nut, 46 fixed nut, 50 hoist, 50a hook, 52 U-shaped ring, 54 rope, 56 U-shaped ring

Claims

An elevator compensating rope hoisting device for hoisting a compensating rope suspended from a counterweight in an elevator hoistway,
A compensating shackle rod is connected to the end of the compensating rope, and by inserting the compensating shackle rod into the through hole of the mounting portion of the counterweight from below and fastening the adjustment nut from above the mounting portion, the compen rope is suspended from the counterweight;
The compen rope lifting device is
a connection tool having a nut portion to be screwed to the tip of the compensating shackle rod at one end and a hook portion at the other end;
a hoist connected to the hook;
a rope for suspending the hoist above the connection tool from the rectangular frame of the counterweight;
Elevator compen rope hoisting device comprising.
The nut portion is a high nut,
The compensating rope lifting device for an elevator according to claim 1, wherein the one end of the connecting tool is formed with a thread for screwing with the high nut.
3. The elevator compensating rope hoisting device according to claim 2, further comprising a fixing nut for fixing said high nut screwed onto said compensating shackle rod.
4. The compensating rope lifting device for an elevator according to claim 2, wherein a mark indicating a proper position of the high nut is provided on the thread of the connecting tool.
The compensating rope lifting device for an elevator according to any one of claims 1 to 4, wherein the rope is attached so as to fix the hoist from each of left and right longitudinal beams of the rectangular frame.
The compen rope lifting device for an elevator according to any one of claims 1 to 5, wherein the hook is a circular hole.
An elevator compensating rope hoisting method for hoisting a compensating rope suspended from a counterweight in an elevator hoistway, comprising:
A compensating shackle rod is connected to the end of the compensating rope, and by inserting the compensating shackle rod into the through hole of the mounting portion of the counterweight from below and fastening the adjustment nut from above the mounting portion, the compen rope is suspended from the counterweight;
The method for pulling up the compen rope is
a step of screwing the nut portion of a connection tool having a nut portion on one end and a hook portion on the other end to the tip of the compensating shackle rod;
suspending a hoist from the counterweight rectangular frame;
hooking the hook of the hoist on the hook;
operating the hoist to pull up the connection tool;
tightening the adjustment nut;
A compen rope lifting method for an elevator comprising: