JP2008254834A - Main rope replacing method for hydraulic elevator and pulley tool for main rope replacement using the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a main rope replacing method for a hydraulic elevator capable of safely performing main rope replacement work by a worker located above a car. <P>SOLUTION: The main rope replacing method for the hydraulic elevator having a pulley tool 5 for main rope replacement mounted to an upper beam of the car 4 includes a process of stopping the car 4 in the vicinity of an uppermost floor and hanging and fixing the car 4 in a hoistway top part; a process of installing a new main rope drum 1 on a landing 3 of the uppermost floor; a process of fixing the pulley tool 5 for main rope replacement to the upper beam of the car 4; a process of cutting an old main rope 10 at the car side main rope terminal portion and jointing an end part of a new main rope 2 to the cutting end part of the old main rope 10; and a process of hanging down the joint part of the old and new main ropes 10, 2 toward a rotating wheel 6 below the car 4 while delivering the new main rope 2 with the new main rope 2 put in a rope groove of a pulley of the pulley tool 5 for main rope replacement, and of winding up the old main rope 10 around a winding drum 8 installed in a hoistway pit. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a hydraulic rope main rope replacement method called a hydraulic side plunger system and a main rope replacement pulley jig used therefor.

  Conventionally, the main rope replacement work for hydraulic elevators, called the hydraulic side plunger method, is to fix the car near the top floor and install the new main rope at the landing, and wire rope at the existing car side main rope end. Cut and join the new main rope and the old main rope. From this state, until the pit operator finishes winding the new main rope over the entire circumference, the operator on the car must hold the new main rope by hand, which is very labor intensive. It was necessary. Moreover, the joint part of the old and new main ropes is the slip-off preventing part of the car lower rotating car provided under the car, and the rope comes off most easily. Therefore, the operator on the car must control the main rope by hand while visually checking. However, it is extremely difficult for a worker on the car to control the main rope by hand.

  Further, as a conventional technique, there is known a main rope exchanging method for a hydraulic elevator that can perform main rope exchanging work efficiently at low cost (for example, see Patent Document 1).

JP 2000-128456 A

  In the conventional hydraulic elevator main rope replacement work, called the hydraulic side plunger method, the operator on the car must hold the new main rope by hand until one new main rope has been wound all around. There was a problem that there was a lot of labor. In addition, when the joint part of the old and new main ropes passes through the locking part of the undercarriage rotating car provided under the car, the operator on the car must visually check the hand so that the rope does not come off. There was a problem that it was difficult to control the main rope. In addition, when the new main rope is detached from the car under the car, it is necessary for the worker to get down to the car and fix the rope.

  The present invention has been made to solve the above-described problems. After the main rope replacement pulley jig is attached to the upper beam of the car and the old and new main ropes are joined, the main rope replacement pulley jig is provided. A new main rope is inserted into the rope groove of the pulley of the pulley so that it can be taken up by the pit operator, and a safety rope main rope replacement method and a main rope replacement pulley jig used therefor are improved. It is.

  In the main rope exchanging method of the hydraulic elevator according to the present invention, a hydraulic jack installed in the hoistway and provided with a pulley at the upper part, and the hoistway is moved up and down by the operation of the hydraulic jack, and the car is rotated under the car. A main rope with one end attached to the top of the hoistway, an intermediate part wrapped around the upper pulley of the lower car and the hydraulic jack, and the other end attached to the hoistway bottom, With a main rope replacement pulley jig attached to the upper beam of the car, stopping the car near the top floor, hanging and fixing the car to the top of the hoistway, and new to the top floor landing The process of installing the main rope drum, the process of attaching and fixing the main rope replacement pulley jig to the upper beam of the car, and cutting the old main rope at the car side main rope end, and the end of the new main rope and the old Main rope With the joint of the stump and the new main rope inserted into the rope groove of the pulley of the main rope replacement pulley jig, the new and old main rope joints face the rotating car under the car while feeding out the new main rope. And a process of winding the old main rope around a winding drum installed in the hoistway pit.

  The main rope replacement pulley jig includes a pulley that supports and guides the new main rope, a pulley mounting base that rotatably supports the pulley, and a T that attaches the pulley and the pulley mounting base to the beam on the car. It consists of a mold mounting bracket.

  Further, the main rope replacement pulley jig can arbitrarily swing the pulley mounting angle.

  In addition, the main rope replacement pulley jig can arbitrarily adjust the mounting height of the T-shaped mounting bracket to the beam on the car.

  Moreover, in the main rope exchanging pulley jig used in the main rope exchanging method of the hydraulic elevator according to the present invention, a hydraulic jack installed in the hoistway and provided with a pulley on the upper side, and the raising and lowering by the operation of the hydraulic jack. Ascending and descending in the road, whether a car lower rotating car is installed at the bottom, one end is attached to the top of the hoistway, the middle part is wrapped around the car lower rotating car and the upper pulley of the hydraulic jack, the other end is A main rope attached to the bottom of the hoistway and a main rope exchanging pulley jig attached to the upper beam of the car. The main rope exchanging pulley jig includes a pulley that supports and guides the new main rope, and the pulley. And a T mounting bracket for attaching the pulley and the pulley mounting base to the car upper beam.

  The pulley is made of wood and a hole is formed in the wooden pulley.

  According to this invention, the main rope replacement pulley jig is attached to the upper beam of the car, the old and new main ropes are joined, the new main rope is put into the rope groove of the pulley of the main rope replacement pulley jig, and the pit When the operator winds up, the worker on the car needs to check only when the rope joint passes through the car under the car. Can significantly reduce the burden on workers on the car. In addition, the new main rope is rarely detached from the car rotating under the car, and there is no need for the operator to go down under the car and repairing the rope disengagement, so that the safety can be remarkably improved.

Embodiment 1 FIG.
1 is a schematic configuration diagram for explaining a main rope exchanging method of a hydraulic elevator in Embodiment 1 of the present invention, and FIG. 2 is a main rope exchanging method used in the main rope exchanging method of the hydraulic elevator in Embodiment 1 of the present invention. FIG. 3 is a front view showing a T-shaped mounting bracket for attaching the main rope replacement pulley jig to the upper beam of the car, and FIG. FIG. 5 is a plan view of the T-shaped mounting bracket, FIG. 6 is a front view showing a pulley mounting base for mounting the main rope replacement pulley, and FIG. 7 is a similar view of the pulley mounting base. FIG. 8 is a bottom view of the pulley mounting base, FIG. 9 is a partially enlarged view showing the groove of the main rope replacement pulley, and FIG. 10 is an application of the main rope replacement pulley jig according to the present invention to a passenger elevator. Attached to the upper beam of the basket Explanatory view showing, Fig. 11 is an explanatory view showing a state attached to a beam on top of the car by applying the main rope replacement pulley fixture according to the invention luggage elevator.

  In the figure, 1 is a new main rope drum around which a new main rope 2 is wound, 3 is a top floor hall where the new main rope drum 1 is installed, 4 is a hydraulic elevator car, and 5 is installed on a car upper beam 4a. The main rope replacement pulley jig according to the present invention, 6 is a car lower rotating car provided at the lower part of the car 4, 7 is a hydraulic side plunger type hydraulic jack installed in the hoistway and provided with a pulley at the upper part. , 8 is a take-up drum for winding the old main rope 10 installed in the hoistway pit 9, 11 is a car main rope terminal provided at the top of the hoistway, and 12 is a jack side provided at the lower part of the hoistway. A main rope terminal 13 is a sling wire provided at the top of the hoistway, and is hung by hanging a beam on the car. One end of the main rope is attached to the car-side main rope terminal 11 at the top of the hoistway, the intermediate portion is wound around the upper pulley of the car lower rotating wheel 6 and the hydraulic jack 7, and the other end is a jack at the bottom of the hoistway. Attached to the side main rope terminal 12.

Next, a specific configuration of the main rope replacement pulley jig 5 according to the present invention will be described in detail with reference to FIGS.
The main rope replacement pulley jig 5 includes a wooden pulley 51 that supports and guides the new main rope 2 fed from the new main rope drum 1 installed on the top floor landing 3, and the pulley 51 via the shaft pin 52. The pulley mounting base 53 is rotatably supported and a T-shaped mounting bracket 54 for mounting the pulley 51 and the pulley mounting base 53 to the car upper beam 4a. The wooden pulley 51 is provided with a rope groove 51a which is provided on the outer periphery and is obliquely cut so that even a wire rope having a large diameter can be inserted, and four large holes 51b in order to reduce the weight as much as possible. Yes. Further, the pulley mounting base 53 is provided with a through hole 53a through which the shaft pin 52 is inserted and fixed on one side surface of the upper end portion of the L-shaped angle, and the lower end portion of the L-shaped angle is formed by the bottom surface portion 53b. It is closed and a through hole 53c is provided in the bottom surface portion 53b. Further, the T-shaped mounting bracket 54 has a central leg portion 54a horizontally disposed at the time of mounting with an L-shaped cross section, and extends to the left and right perpendicular to the central leg portion 54a. The arm portion 54b has an L-shaped cross section, and both side end surface portions are respectively closed by side surface portions 54c. An elongated hole 54d is provided in the vicinity of the center of one side of the L-shaped cross section of the central leg 54a orthogonal to the extending direction of the left and right arms 54b. Further, through holes 54e are provided in the side surface portions 54c on both side end surfaces of the left and right arm portions 54b. Either one of the through holes 54e is matched with the through hole 53c of the bottom surface portion 53b of the pulley mounting base 53, and is fastened and fixed by a fastener 55 made of a bolt, a nut or the like. In addition, since the angle of the fixing position by the fastener 55 at this time can be changed and adjusted by 360 degrees, the attachment angle (swing angle) of the pulley 51 can be arbitrarily adjusted. Interference can be avoided. Further, an elongated hole 54f is provided in the vicinity of the center of the left arm part (see FIG. 3) on the attachment side of the central leg part 54a of the left and right arm parts 54b.

Next, a method for exchanging the main rope of the hydraulic elevator according to the present invention will be described.
First, the car 4 is stopped near the uppermost floor, and the slinging wire 13 is hooked on the upper beam 4a of the car 4 and suspended and fixed. Next, an operator performs an operation of attaching the main rope replacement pulley jig 5 to a predetermined position of the car upper beam 4a on the car 4. The main rope replacement pulley jig 5 includes a wooden pulley 51 that supports and guides the new main rope 2, a pulley mounting base 53 that rotatably supports the pulley 51 via a shaft pin 52, a pulley 51, The pulley mounting base 53 includes a T-shaped mounting bracket 54 for mounting the pulley mounting base 53 to the car upper beam 4a. In FIG. 2, the left and right arms 54b of the T-shaped mounting bracket 54 are arranged vertically and the center leg 54a of the T-shaped mounting bracket 54 is placed horizontally. A pulley attachment base 53 to which a wooden pulley 51 is attached is fastened and fixed by a fastener 55 on the side surface portion 54 c of the left arm portion 54 b that is the upper end portion of the T-shaped mounting bracket 54. Since the angle of the fixed position by the fastener 55 can be changed and adjusted by 360 degrees, interference with hoistway devices and the like is avoided by arbitrarily adjusting the mounting angle (swing angle) of the pulley 51. Also, the left arm of the left and right arms 54b of the T-shaped mounting bracket 54 so that the horizontally disposed central leg portion 54a contacts the lower surface of the horizontal side of the upper beam 4a. The T-shaped mounting bracket 54 is attached to the car upper beam 4a so that the portion contacts the outer surface of the vertical side of the upper beam 4a. And it fixes firmly and firmly with respect to each long hole 54d and 54f with the rail clip 56. FIG. Due to the presence of the elongated holes 54d and 54f, it is possible to follow the change in the size of the car upper beam 4a. As a result, the operation of attaching the main rope replacement pulley jig 5 to the predetermined position of the car upper beam 4a is completed. At this time, the position of the rope groove of the car lower rotary wheel 6 coincides with the hanging straight line of the main rope hanging from the rope groove 51a of the pulley 51 of the pulley replacement pulley 5 for the main rope. Next, in a state where the new main rope drum 1 is installed at the top floor hall 4, the old main rope 10 is cut at the existing car side main rope terminal portion, and the end of the new main rope 2 and the old main rope 10 are cut. Let the end part be the joint 14. The pulley 51 is configured so that the rope groove 51a prevents the joint portion 14 of the old and new main ropes from coming off easily even when passing through the locking portion of the rotating wheel 6 provided under the car, and the rotation is performed smoothly. It is what is said. After the old and new main ropes are joined, the new main rope 2 is gently put into the rope groove 51a of the pulley 51 of the main rope replacement pulley jig 5, and then the pit operator takes up the old main rope take-up drum 8. . At this time, if the worker on the car checks only when the rope joint part 14 passes through the car lower rotating wheel 6, the entire rope can be replaced with a simple hand afterwards. The burden on workers on the car can be significantly reduced. Moreover, when it comes out to the last rope end, a rope attachment chuck | zipper is attached and the new main rope 2 is attached to the cage | basket side main rope terminal 11, and one part will be complete | finished. Repeat this process for the number of main ropes.

  FIG. 10 shows a state in which the main rope replacement pulley jig 5 is attached to the upper beam (upward angle) of the passenger elevator car as in FIG. 2, whereas FIG. 11 shows the main rope replacement pulley. A state in which the jig 5 is attached to the upper beam (downward angle) of the luggage elevator car is shown. In the luggage elevator, the L-shaped cross section constituting the left and right arms 54b of the T-shaped mounting bracket 54 is mounted upside down and mounted on the car upper beam 4a having a downward angle.

  As described above, according to the present invention, after the main rope replacement pulley jig is attached to the upper beam of the car and the old and new main ropes are jointed, the new main main rope replacement pulley jig is inserted into the rope groove of the pulley. When putting the rope and letting the pit operator take up, the worker on the car needs to check only when the rope joint part passes the rotating car under the car, and after that, just add a hand. Since the entire circumference of the main rope can be changed, the burden on the car operator can be significantly reduced. In addition, the new main rope is rarely detached from the car-revolving car, so that it is not necessary for the operator to get down under the car to correct the rope disengagement, and safety can be significantly improved.

It is a schematic block diagram for demonstrating the main rope replacement | exchange method of the hydraulic elevator in Embodiment 1 of this invention. It is a perspective view which shows the state which attached to the upper beam of the cage | basket | car for main rope replacement | exchange pulleys used for the main rope replacement | exchange method of the hydraulic elevator in Embodiment 1 of this invention. It is a front view which shows the T type attachment bracket for attaching the pulley jig | tool for main rope replacement | exchange to the upper beam of a cage | basket | car. It is a side view which shows the T-shaped attachment bracket for attaching the pulley jig | tool for main rope replacement | exchange to the upper beam of a cage | basket | car. It is a top view which shows the T type attachment bracket for attaching the pulley jig | tool for main rope replacement | exchange to the upper beam of a cage | basket | car. It is a front view which shows the pulley attachment base for attaching the pulley for main rope replacement | exchange. It is a side view which shows the pulley attachment base for attaching the pulley for main rope replacement | exchange. It is a bottom view which shows the pulley attachment base for attaching the pulley for main rope replacement | exchange. It is the elements on larger scale which show the groove | channel of the pulley for main rope replacement | exchange. It is explanatory drawing which shows the state which applied the pulley jig for main rope replacement | exchange by this invention to the passenger elevator, and was attached to the upper beam of the cage | basket | car. It is explanatory drawing which shows the state which applied the pulley jig for main rope replacement | exchange by this invention to the luggage elevator, and was attached to the upper beam of the cage | basket | car.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 New main rope drum 2 New main rope 3 Top floor landing 4 Car 4a Car upper beam 5 Main rope replacement pulley jig 6 Car lower rotation car 7 Hydraulic jack 8 Winding drum 9 Hoistway pit 10 Old main rope 11 Car side Main rope terminal 12 Jack side main rope terminal 13 sling wire 51 pulley 51a rope groove 51b hole 52 shaft pin 53 pulley mounting base 53a through hole 53b bottom surface portion 53c through hole 54 T-shaped mounting bracket 54a central leg 54b left and right arms Part 54c side part 54d oblong hole 54e through hole 54f oblong hole 55 fastener 56 rail clip

Claims (7)

A hydraulic jack installed in the hoistway, with a pulley at the top, and the operation of the hydraulic jack raises and lowers the hoistway, and a lower car is installed at the bottom, one end at the top of the hoistway A main rope attached to the lower pulley of the car and the upper pulley of the hydraulic jack and having the other end attached to the bottom of the hoistway, and a main rope replacement pulley attached to the upper beam of the car A main rope replacement method for a hydraulic elevator equipped with a jig,
Stopping the car near the top floor and hanging and fixing the car to the top of the hoistway;
Installing a new main rope drum at the top floor hall;
Attaching and fixing the main rope replacement pulley jig to the upper beam of the car;
Cutting the old main rope at the car-side main rope end, and joining the end of the new main rope and the cut end of the old main rope;
While the new main rope is put in the rope groove of the pulley of the main rope replacement pulley jig, the new main rope is drawn out while the joint portion of the old and new main ropes is suspended toward the car below the car. Winding the rope around the winding drum installed in the hoistway pit,
A main rope replacement method for a hydraulic elevator, comprising:   The main rope replacement pulley jig includes a pulley that supports and guides the new main rope, a pulley mounting base that rotatably supports the pulley, and a T-shaped mounting that attaches the pulley and the pulley mounting base to the beam on the car. The main rope replacement method for a hydraulic elevator according to claim 1, wherein the main rope is replaced with a metal fitting.   3. The main rope exchanging method for a hydraulic elevator according to claim 2, wherein the main rope exchanging pulley jig is configured such that the angle at which the pulley is attached can be arbitrarily adjusted.   4. The main rope of the hydraulic elevator according to claim 2 or 3, wherein the pulley jig for exchanging the main rope is configured so that the height of the T-type mounting bracket attached to the upper beam of the car can be arbitrarily adjusted. method of exchange. A hydraulic jack installed in the hoistway, with a pulley at the top, and the operation of the hydraulic jack raises and lowers the hoistway, and a lower car is installed at the bottom, one end at the top of the hoistway A main rope attached to the lower pulley of the car and the upper pulley of the hydraulic jack and having the other end attached to the bottom of the hoistway, and a main rope replacement pulley attached to the upper beam of the car With a jig,
The main rope replacement pulley jig includes a pulley that supports and guides the new main rope, a pulley mounting base that rotatably supports the pulley, and a T-type that mounts the pulley and the pulley mounting base on a beam on the car. A pulley assembly for exchanging a main rope used in a method for exchanging a main rope of a hydraulic elevator, characterized in that it comprises a mounting bracket.   6. The pulley jig for exchanging a main rope used in the main rope exchanging method of the hydraulic elevator according to claim 5, wherein the pulley is made of wood.   A pulley jig for exchanging a main rope for use in a main rope exchanging method for a hydraulic elevator according to claim 6, wherein a hole is formed in the wooden pulley.

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