JP5571708B2 - How to replace the main rope of the elevator - Google Patents

Description

  The present invention relates to a main rope exchanging method for exchanging an old main rope to be exchanged with a new main rope for new exchange.

  FIG. 6 is a diagram illustrating a conventional elevator main rope replacement method.

  In general, as shown in FIG. 6, an elevator includes a hoistway 100, a machine room 101 provided on the upper part of the hoistway 100, and a machine beam 102 provided in the machine room 101. The elevator suspends the car 27 provided in the hoistway 100, the counterweight 20 that moves up and down relatively with respect to the car 27, and the car 27 and the counterweight 20 in the hoistway 100. And a pair of guide rails 21 a and 21 b for guiding the counterweight 20.

  The machine room 101 is disposed in the vicinity of a traction machine (not shown) placed on the machine beam 102, a hoisting machine 26 that is powered by electric power, and the hoisting machine 26, and is rotatable. And a beam pulley 25 provided. On the other hand, the car 27 has a pulley 28 provided at the upper part so as to be rotatable. Similarly, the counterweight 20 also has a pulley 24 provided at the upper part so as to be rotatable. The main rope is wound around the pulley 24 at the upper part of the counterweight 20, the beam pulley 25 in the machine room 101, the hoist 26 and the pulley 28 of the car 27, and both ends are attached to the rope sockets 23 and 29, respectively. It has been.

  As described above, the main rope laid in the hoistway 100 for smoothly raising and lowering the passenger car 27 and the counterweight 20 may cause elongation or damage due to use over a long period of time. It is necessary to replace the existing old main ropes 4a and 4b to be replaced with the new main rope 1 for new replacement, and it takes a lot of labor and time to replace the main rope. . Accordingly, when the old main ropes 4a and 4b are replaced with the new main rope 1, various devices are provided in the hoistway 100 so that the work can be easily performed.

  For example, the new main rope 1 is provided at the lower corner of the new main rope 1 that is suspended in a U shape from the machine room 101 side above the counterweight 20 installed in the pit 104 of the hoistway 100, that is, at the U-shaped hanging portion 1a. A pair of gold wheels 2a and 2b mounted in a state where 1 is wound, a pair of connecting members (not shown) projecting downward from the gold wheels 2a and 2b, and a counterweight 20 A horizontal bar member 60 interposed between the pair of guide rails 21a and 21b and connected to the pair of connecting members, and fixed to both ends of the horizontal bar member 60 and slidable on the guide rails 21a and 21b. A main rope exchanging jig for a 2: 1 roping elevator provided with guide members 7a and 7b attached to the vehicle has been proposed as one of the prior arts (see, for example, Patent Document 1).

  Next, a main rope replacement method using the conventional main rope replacement jig will be described with reference to FIG.

  First, as shown in FIG. 6, the counterweight 20 is supported and fixed by the support member 105 of the counterweight 20 disposed in the pit 104 of the hoistway 100, and the cage 27 is installed on the machine beam 102 of the machine room 101. After hanging and fixing near the uppermost floor 103a through the chain 32b, the existing old main ropes 4a and 4b are cut and removed. Next, the rope sending reel 37 around which the new main rope 1 for replacement is wound is installed on the uppermost floor 103a, and the new main rope 1 fed out from the rope sending reel 37 sequentially is pulled by the pulley 28 of the car 27. Then, it is wound around the hoisting machine 26 of the machine room 101 and the beam pulley 25 and introduced into the machine room 101.

  Then, by fixing the tip of the new main rope 1 introduced into the machine room 101 to the rope socket 23 on the counterweight 20 side of the rope sockets 23 and 29, the balance of the hoistway 100 of the new main rope 1 is achieved. Since the portion on the weight 20 side hangs down in a U shape from the machine room 101 side above the counterweight 20, the main rope exchanging jig 50 of the prior art is attached below the U-shaped suspending portion 1a. That is, after attaching the gold wheels 2a and 2b to the lower corners of the U-shaped hanging portion 1a of the new main rope 1, the horizontal bar member 60 is placed between the guide rails 21a and 21b on the counterweight 20 side, the guide members 7a, It installs via 7b, and each gold wheel 2a, 2b and the horizontal bar member 60 are integrated.

  When the conventional main rope replacement jig 50 is attached below the U-shaped hanging portion 1a of the new main rope 1, the U-shaped hanging portion 1a is guided by its own weight. Since it descends gradually as it is guided by the rails 21 a and 21 b, the U-shaped hanging part 1 a descends to the vicinity of the pulley 24 of the counterweight 20. Then, the new main rope 1 is detached from the gold wheels 2 a and 2 b, and the U-shaped hanging portion 1 a is wound around the pulley 24 of the counterweight 20.

  Next, after one end of the new main rope 1 on the side of the car 27 is wound around the pulley 28 of the car 27, the one end is connected to the rope socket 29 on the side of the car 27 of the rope sockets 23 and 29. By fixing, the replacement work of the main rope for removing the old main ropes 4a and 4b and laying the new main rope 1 is completed. Then, the main rope exchanging jig 50 of the prior art is disassembled and removed from the guide rails 21a and 21b on the counterweight 20, the main rope exchanging jig 50 is transferred to the vicinity of the uppermost floor 103a, and the above-described exchanging is performed. Repeat the same procedure for all remaining old main ropes.

Japanese Patent Laid-Open No. 10-167612

  Thus, the main rope exchanging method using the main rope exchanging jig 50 of the conventional 2: 1 roping elevator disclosed in Patent Document 1 described above is to cut the existing old main ropes 4a and 4b. After the recovery work to be recovered, the installation work of laying the new main rope 1 for replacement is performed, so the recovery work of these old main ropes 4a and 4b and the installation work of the new main rope 1 are performed. These two operations cannot be performed at the same time, and it takes a long time to start and end the main rope replacement operation.

  In the main rope exchanging method using the main rope exchanging jig 50 of the conventional 2: 1 roping elevator, when the old main ropes 4a and 4b are cut, the old main ropes 4a and 4b which are cut depending on the work situation. May fall on the pit 104 of the hoistway 100 or dissipate, the old main ropes 4a and 4b may be caught by the equipment in the hoistway 100 and become entangled. In this case, when the worker 36 on the lowermost floor 103b recovers the old main ropes 4a and 4b to the rope recovery reel 38, it cannot be recovered well, and accordingly, extra time is required. There are concerns.

  Furthermore, the main rope exchanging method using the main rope exchanging jig 50 of the 2: 1 roping elevator of the prior art is such that when the descent from the upper part of the hoistway 100 to the pulley 24 of the counterweight 20, Thus, it is necessary to apply a tension of such a magnitude that the U-shaped hanging portion 1a does not twist or bend. The above-described main rope replacement method applies the above-mentioned tension to the new main rope 1 by increasing its own weight, so that the work related to the main rope replacement work including transportation work and installation work to the site is performed. There is a risk that the burden on the person will increase.

  The present invention has been made based on such a situation of the prior art, and an object of the present invention is to provide an elevator capable of quickly performing a main rope replacement operation and reducing a burden on an operator involved in the main rope replacement operation. The main rope replacement method is to provide.

In order to achieve the above object, the elevator main rope replacement method according to the present invention includes a car cage provided in a hoistway, a counterweight suspended via the main rope and the carpool, and the counterweight. A horizontal bar member that is applied to an elevator including a pair of guide rails to be guided and a machine room provided at an upper portion of the hoistway, and is disposed between the pair of guide rails and disposed above the counterweight. And a guide member fixed to both ends of the horizontal bar member and slidably mounted on the pair of guide rails, and a new main rope for replacement being wound around the horizontal bar member. And the upper end of the old main rope to be exchanged, which is provided on the horizontal bar member and is divided at the portion located at the top of the hoistway and is suspended to the counterweight side at the lower part of the hoistway. Rope connection means to connect A method of exchanging the old main rope with the new main rope using an elevator main rope exchanging jig, wherein the new main rope is suspended from the machine room and attached to the gold wheel. An attaching step to divide the old main rope at a portion located at the top of the hoistway, and an upper end of a portion of the divided old main rope that hangs down to the counterweight side of the lower part of the hoistway. It includes a connecting step of connecting to the rope connecting means and a moving step of moving the horizontal bar member downward.

In the present invention configured as described above, when replacing the old main rope to be replaced with a new main rope for replacement, the new main rope is wound around the gold wheel in the mounting process, and the gold wheel is moved to each guide rail in this state. It is attached to the horizontal bar member interposed between them, and the old main rope is divided at the top part of the hoistway in the connection process, and the divided old main rope is suspended to the counterweight side at the lower part of the hoistway. The upper end of the portion to be connected is connected to the rope connecting means provided on the horizontal bar member. In the moving process, the horizontal bar member is lowered along the guide rail with the guide member while holding the new main rope and the old main rope, so that the new main rope is fed into the hoistway and the old main rope is moved to the hoistway. It can be recovered from the lower part. Thus, since the two operations of collecting the old main rope and laying the new main rope can be performed at the same time, the replacement operation of the main rope can be performed efficiently.

In addition, as described above, in the moving process, the old main rope that is divided at the portion located at the top of the hoistway and hangs down to the counterweight side of the lower part of the hoistway lowers the horizontal bar member and moves to the lower part of the hoistway. Since it is held by this horizontal bar member until it reaches, the worker waiting at the lower part of the hoistway removes the old main rope from the rope connection means, so that the old main rope is not entangled with the equipment in the hoistway It can be easily recovered. Thereby, since the collection | recovery operation | work of an old main rope can be performed smoothly, the time spent for the replacement | exchange operation | work of a main rope can be reduced.

Furthermore, the present invention divides the old main rope at the portion located at the top of the hoistway in the connecting step, and the upper end of the portion of the divided old main rope that hangs down to the counterweight side at the lower part of the hoistway is rope connecting means. Since the tension is applied to the new main rope using the load of the old main rope applied to the horizontal bar member, each member can be lightened by that amount. Thereby, since it becomes easy for an operator to carry each member used in a hoistway, each member can be easily assembled or disassembled. As described above, the replacement work of the main rope can be quickly performed, and the burden on the operator related to the replacement work of the main rope can be reduced.

  Further, in the elevator main rope replacement method according to the present invention, in the above invention, the main rope replacement jig is provided at the top of the hoistway, and includes a hoist that suspends the horizontal bar member, and the moving step includes The horizontal bar member is lowered by the hoist of the main rope replacement jig. When configured in this way, the load of the old main rope on the horizontal bar member can be shared by the hoist and the new main rope, so the hoist needs to have the performance necessary to hold the entire load of the old main rope. The hoist can be measured.

  In addition, the elevator main rope replacement method according to the present invention includes, in the above invention, an ascending step of raising the horizontal bar member by the hoist of the main rope exchanging jig after the moving step is performed. It is a feature. If comprised in this way, since the raising / lowering operation | movement of a horizontal bar member can be controlled by a hoist, the horizontal bar member which moved to the lower part of the hoistway in the movement process is raised with a hoist in the raising process, and thereby the horizontal bar member is moved to the hoistway. It can be returned to the top again. This eliminates the need for disassembling and reassembling the main rope exchanging jig when collecting the remaining of the existing old main rope, thereby improving the efficiency of exchanging the main rope.

According to the elevator main rope replacement method of the present invention, the new main rope is attached to the horizontal bar member with a gold wheel in the mounting process, and the old main rope is divided at the top portion of the hoistway in the connection process, and divided. The upper end of the part of the old main rope that is suspended to the counterweight side at the lower part of the hoistway is connected to the rope connecting means provided on the horizontal bar member, and the horizontal bar member is used as a guide rail by the guide member in the moving process. By lowering along, it is possible to simultaneously perform two operations of collecting the old main rope and laying the new main rope. In particular, in the moving process, the old main rope that is divided at the portion located at the top of the hoistway and hangs down to the counterweight side at the lower part of the hoistway is held by the horizontal bar member during the descent. It can be easily recovered by removing the old main rope at the bottom. In addition, the horizontal bar member can be lowered using the load of the old main rope that is divided at the top part of the hoistway and hangs down to the counterweight side at the lower part of the hoistway. can do. In this way, the main rope replacement work can be performed quickly, and the burden on the operator involved in the main rope replacement work can be reduced, and higher workability than before can be ensured.

It is a flowchart explaining the structure of one Embodiment of the main rope replacement | exchange method of the elevator which concerns on this invention. It is a figure showing composition of a main rope exchanging jig used for one embodiment of a main rope exchanging method of an elevator concerning the present invention. It is a figure which shows the structure of 2: 1 roping elevator to which one Embodiment of the main rope replacement | exchange method of the elevator which concerns on this invention is applied. It is a figure explaining one Embodiment of the main rope replacement | exchange method of the elevator which concerns on this invention, and is a figure explaining a mounting process and a connection process. It is a figure explaining one Embodiment of the main rope replacement | exchange method of the elevator which concerns on this invention, and is a figure explaining a movement process. It is a figure explaining the operation | work which replaces | exchanges a main rope using the main rope replacement jig of the elevator of a prior art.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the main rope replacement | exchange method of the elevator which concerns on this invention is demonstrated based on figures. In addition, the same code | symbol is attached | subjected to the part which overlaps with description of the prior art mentioned above.

  An elevator to which one embodiment of the elevator main rope replacement method according to the present invention is applied is provided in a hoistway 100 as shown in FIG. 3, for example, and a car 27 that stops on each floor, A counterweight 20 suspended via the main rope 4 and a pair of guide rails 21a and 21b for guiding the counterweight 20 are included. In this embodiment, this elevator is composed of a 2: 1 roping elevator. As will be described later, main rope replacement work using this embodiment is performed on the upper floor 103a and the lower floor among the floors. It is mainly performed on the floor 103b. A plurality of main ropes 4 are laid.

  The hoistway 100 includes a machine room 101 provided in an upper part, a machine beam 102 provided in the machine room 101, and a pit 104 to which a support member 105 described later is attached. Further, the machine room 101 is disposed near the hoisting machine 26, a traction machine (not shown) placed on the machine beam 102, a hoisting machine 26 that rotates when supplied with electric power, and rotates. A beam pulley 25 is provided, and rope ends 22 and 30 for fixing both ends of the main rope 4 to the machine beam 102 via rope sockets 23 and 29 are provided.

  On the other hand, the car 27 has a pulley 28 provided at the upper part so as to be rotatable. Similarly, the counterweight 20 also has a pulley 24 provided at the upper part so as to be rotatable. The main rope 4 is wound around the pulley 24 at the upper part of the counterweight 20, the beam pulley 25 in the machine room 101, the hoisting machine 26, and the pulley 28 of the car 27, and both ends are respectively attached to the rope sockets 23 and 29. Installed.

  In the present embodiment, as shown in FIG. 3, the portion of the old main rope 4 from the rope socket 23 to the center wound around the pulley 24 of the counterweight 20 is the old main rope 4 a and the old main rope 4. The part from the center wound around the pulley 24 of the counterweight 20 to the top of the hoistway 100 is the old main rope 4b, and the part of the old main rope 4 from the top of the hoistway 100 to the rope socket 29 is the old main rope 4c. For convenience.

  In the present embodiment, the main rope exchanging jig 11 used for exchanging the old main rope 4 to be exchanged with the new main rope 1 for new exchange is formed between a pair of guide rails 21a and 21b as shown in FIG. A horizontal bar member 6 interposed and disposed above the counterweight 20, and a guide member 7a fixed to both ends of the horizontal bar member 6 and slidably mounted on the pair of guide rails 21a and 21b. , 7b, a pair of gold wheels 2a, 2b mounted in a state in which the new main rope 1 is wound around the horizontal bar member 6, and a horizontal bar member 6, which will be described later for connecting the old main ropes 4a, 4b. Rope connection means 5a and 5b are provided.

  Specifically, the horizontal bar member 6 is composed of, for example, a pair of single bars 6a and 6b each having an L-shaped cross section, and the single bars 6a and 6b are provided so as to be relatively slidable. It is supposed to be. That is, a pair of elongated holes 9a and 9b are provided at one end of one end of each single bar 6a and 6b, and guide members 7a and 7b are provided at the other end of each single bar 6a and 6b. .

  Then, the single bars 6a, 6b are overlapped with each other so that the single bar 6a is on the upper side and the single bar 6b is on the lower side. Bolts 8a1 and 8b1 are inserted into the long holes 9a and 9b of 6b through plain washers 8a2 and 8b2, and the bolts 8a1 and 8b1 are fastened with nuts 8a5 and 8b5 through plain washers 8a3 and 8b3 and spring washers 8a4 and 8b4. ing.

  Accordingly, the horizontal bar member 6 has the bolts 8a1 and 8b1 attached to the long holes 9a and 9b before the bolts 8a1 and 8b1 attached to the long holes 9a and 9b of the single bars 6a and 6b are completely fastened with the nuts 8a5 and 8b5. The full length can be adjusted by sliding the single bars 6a and 6b along the longitudinal direction in the loosely inserted state. The elongated holes 9 a and the elongated holes 9 b provided in the individual bars 6 a and 6 b are symmetric with respect to the vertical line L at the center of the horizontal bar member 6.

  Further, the horizontal bar member 6 has a pair of projecting portions 3a and 3b provided on both sides of the long holes 9a and 9b on the upper surface of the single bar 6a and 6b, and projecting upward. These protrusions 3a and 3b are arranged so as to be symmetric with respect to the central vertical line L. The pair of gold wheels 2a and 2b described above has the protrusions 3a and 2b in a state in which the lower corner portion of the new main rope 1 suspended in a U shape from the machine room 101 side, that is, the U-shaped hanging portion 1a is in sliding contact. The new main rope 1 can be attached and detached by engaging with 3b and removing the side surface.

  The rope connecting means 5a, 5b includes a pair of through-holes 5a1, 5b1 provided between the protrusions 3a, 3b and the guide members 7a, 7b of the single bar 6a, 6b, and the through-holes 5a1, 5b1, respectively. 5b1, a pair of rope connecting portions that form a male screw at the tip and connect the old main ropes 4a and 4b to the other end, for example, eyebolts 5a2 and 5b2, and a plain washer interposed between the eyebolts 5a2 and 5b2. 5a3, 5b3 and spring washers 5a4, 5b4, and nuts 5a5, 5b5 screwed into male screws of the eyebolts 5a2, 5b2. The through holes 5a1 and 5b1 are symmetric with respect to the vertical line L at the center of the horizontal bar member 6.

  As shown in FIG. 4, the main rope exchanging jig 11 is provided at the top of the hoistway 100 and includes a hoist 31a for suspending the horizontal bar member 6. The horizontal bar member 6 is a piece of the upper single bar 6a. The mounting hole 10 to which the hoist rope 31b drawn out from the hoist 31a is attached is provided in a piece in which the long holes 9a and 9b are not provided. The mounting hole 10 is disposed at the center of the horizontal bar member 6 so that the individual bars 6a and 6b are kept horizontal.

  Next, an embodiment of the main rope replacement method according to the present invention will be described in detail with reference to FIGS. 4 and 5 based on the flowchart of FIG.

  FIG. 1 is a flowchart for explaining a configuration of an embodiment of an elevator main rope replacement method according to the present invention. FIG. 4 is a diagram for explaining an embodiment of an elevator main rope replacement method according to the present invention. FIG. 5 is a diagram for explaining an embodiment of an elevator main rope replacement method according to the present invention, and is a diagram for explaining a moving process.

  One embodiment of the elevator main rope replacement method according to the present invention includes a step of hanging the new main rope 1 from the machine room 101 and mounting it on the gold wheels 2a and 2b, and a rope connecting means for connecting the old main ropes 4a and 4b. 5a, 5b connecting step, moving step for moving the horizontal bar member 6 downward, and raising the horizontal bar member 6 by the hoist 31a of the main rope exchanging jig 11 after this moving step is performed. Process. In this embodiment, the horizontal bar member 6 is lowered by the hoist 31a in the moving process, and the horizontal bar member 6 is raised by the hoist 31a in the moving process.

  Specifically, as shown in FIG. 4, first, an operator (not shown) of the floor 103 b on the lowest floor installs a support member 105 that supports the counterweight 20 in the pit 104 of the hoistway 100, and An operator 33 on the car 27 raises the car 27 to lower the counterweight 20 to the support member 105, and fixes the counterweight 20 to the support member 105. Thereafter, the worker 33 on the car 27 fixes the car 27 to the machine beam 102 with a chain of chain blocks 32b provided on the car 27 side of the machine beam 102 in the machine room 101. 27 is suspended in the vicinity of the top floor 103a (step (hereinafter referred to as S) 1).

  The worker 33 on the car 27 interposes the main rope exchanging jig 11 described above between the guide rails 21a and 21b on the counterweight 20 side. At this time, the individual bar 6a, 6b of the horizontal bar member 6 of the main rope exchanging jig 11 is slid along the longitudinal direction so that the main rope exchanging jig 11 is placed between the guide rails 21a, 21b. The guide members 7a and 7b are engaged with the guide rails 21a and 21b. And the hoist rope 31b of the hoist 31a installed in the machine beam 102 of the machine room 101 is attached to the attachment hole 10 of the horizontal bar member 6 (S2).

  Next, the operator 33 connects the old main rope 4a to the chain of the chain block 32a provided on the counterweight 20 side of the machine beam 102, and removes the old main rope 4a from the rope socket 23 on the counterweight 20 side. . Next, the operator 33 moves the removed old main rope 4a to the vicinity of the rope connection means 5a by operating the chain block 32a.

  Next, as shown in FIG. 2, the worker 33 connects the upper end of the old main rope 4a to the eyebolt 5a2, and one end of the eyebolt 5a2 on which the male screw is formed is connected to the through hole 5a1 of the single bar 6a. Insert from bottom to top. Then, the operator 33 inserts a flat washer 5a3 and a spring washer 5a4 at one end of the eyebolt 5a2, and screws the nut 5a5 into the male screw of the eyebolt 5a2. Thereafter, the worker 33 removes the chain of the chain block 32a from the old main rope 4a (S3).

  Next, the worker 33 connects the old main ropes 4b and 4c of the old main rope 4 to the chain of the chain block 32a, and cuts the old main rope 4 at a portion located at the top of the hoistway 100. Divide into old main rope 4b and old main rope 4c. And the operator 33 moves the old main rope 4b to the vicinity of the rope connection means 5b by operating the chain block 32a.

  Next, as shown in FIG. 2, the worker 33 connects the upper end of the old main rope 4b to the eyebolt 5b2, and one end of the eyebolt 5b2 where the male screw is formed is connected to the through hole 5b1 of the single bar 6b. Insert from bottom to top. Then, the operator 33 inserts a flat washer 5b3 and a spring washer 5b4 at one end of the eyebolt 5b2, and screws the nut 5b5 into the male screw of the eyebolt 5b2. Thereafter, the worker 33 removes the chain of the chain block 32a from the old main rope 4b (S4).

  At this time, the tension applied to the old main ropes 4a and 4b is released, so that the old ropes 4a and 4b are loosened. Therefore, the worker 36 on the lowest floor 103b installs the work table 106 set at substantially the same height as the counterweight 20 at the lower part of the hoistway 100 and goes up to the work table 106. The lower corner of the old main rope 4 that hangs in a U shape from the machine room 101 side, that is, the U-shaped suspending portion is removed from the pulley 24 of the counterweight 20. Then, the worker 36 on the work table 106 cuts the center of the U-shaped hanging portion of the old main rope 4 to divide the old main rope 4 into the old main rope 4a and the old main rope 4b (S5).

  Next, the worker 35 in the machine room 101 pulls up the portion on the counterweight 20 side of both sides of the old main rope 4c from the hoistway 100, removes the old main rope 4c from the beam pulley 25 and the hoist 26, and the machine room. Pull up to 101. Then, the worker 33 on the car 27 removes the old main rope 4c from the rope socket 29 on the car 27 side. At this time, since both ends of the old main rope 4c are released, the worker 33 on the car 27 sends out the old main rope 4c from the car 27 toward the worker 35 in the machine room 101, and the machine room The worker 35 in 101 receives the old main rope 4c and pulls up and collects it (S6).

  Next, when the worker 35 in the machine room 101 hangs a hemp rope (not shown) into the hoistway 100, the worker 33 on the car 27 receives one end of the hemp rope and receives the top floor. It is sent to the worker 34 on 103a. Then, the worker on the floor 103a receives the hemp rope from the worker 33 on the car 27, pulls out the rope delivery reel 37 around which the new main rope 1 is wound, and connects it to the hemp rope (S7).

  Next, when the worker 34 on the top floor 103a sends the new main rope 1 together with the hemp rope to the worker 33 on the passenger car 27, the worker 33 on the passenger car 27 has the hemp rope and the new main rope. 1 is received and pulled out onto the car 27 (S8). Next, the worker 35 in the machine room 101 receives the hemp rope and the new main rope 1 from the worker 33 on the car 27 and pulls it up into the machine room 101. Then, the operator 35 winds the new main rope 1 around the hoist 26 and the beam pulley 25, and then sends it out to the counterweight 20 side in the hoistway 100 (S9).

  Next, the worker 33 on the car 27 wraps the new main rope 1 fed to the counterweight 20 side in the hoistway 100 around the gold wheels 2a and 2b of the main rope changing jig 11, respectively. The tip of the rope 1 is attached to the rope socket 23 on the counterweight 20 side (S10). Therefore, the main rope exchanging jig 11 holds the new main rope 1 attached in step S10, the old main rope 4a connected in step S3, and the old main rope 4b connected in step S4.

  Next, the operator 33 on the car 27 operates the hoist 31a to send out the hoist rope 31b from the hoist 31a as shown in FIG. 5, whereby the main rope replacement jig 11 is moved through the guide members 7a and 7b. Are lowered along the guide rails 21a and 21b. That is, the own weight of the main rope changing jig 11 and the load of the old main ropes 4a and 4b are supported by the hoist rope 31b and the new main rope 1, and the main rope changing jig 11 has its own weight when the hoist rope 31b is sent out. And it moves to the direction of arrow 39 with the load of old main ropes 4a and 4b.

  At this time, the operator 34 of the uppermost floor 103a sends the new main rope 1 in the direction of the arrow 42 by rotating while holding the rope sending reel 37 as the main rope changing jig 11 descends. Then, the operator 35 in the machine room 101 sends out the new main rope 1 in the direction of the arrow 41 while pressing the beam pulley 25 as the main rope replacement jig 11 is lowered. Thereby, the new main rope 1 is sent out in the direction of the arrow 40 on the counterweight 20 side in the hoistway 100 (S11).

  On the other hand, the worker 36 on the work table 106 moves to the lowermost floor 103b while pulling down the old main ropes 4a and 4b, and connects the lower ends of the old main ropes 4a and 4b to the rope recovery reel 38. (S12). Then, the worker 36 on the lowest floor 103b winds up and collects the old main ropes 4a and 4b on the rope collection reel 38 (S13).

  Next, when the main rope exchanging jig 11 is lowered to the vicinity of the pulley 24 of the counterweight 20 and is laid in the hoistway 100 to a length where the new main rope 1 is wound around the pulley 24, the floor 103b The worker 36 enters the hoistway 100 and goes up to the work table 106, removes the U-shaped hanging portion 1 of the new main rope 1 from the gold wheels 2a and 2b, and winds it on the pulley 24 of the counterweight 20, The worker 33 on the car 27 attaches the other end of the new main rope 1 to the rope socket 29 on the car 27 side (S14).

  Next, the worker 36 on the lowest floor 103b removes one end of the old main ropes 4a and 4b connected to the rope connecting means 5a and 5b of the main rope changing jig 11 from the eyebolts 5a2 and 5b2. Then, all the old main ropes 4a and 4b are wound around the rope collection reel 38, whereby the old main ropes 4a and 4b are collected in the directions of the arrows 43 and 44 (S15). Next, the worker 33 on the car 27 determines whether or not the replacement work for all the main ropes has been completed (S16).

  At this time, if the operator 33 determines that the replacement work of all the main ropes has not been completed, the operator 33 operates the hoist 31a to wind up the hoist rope 31b of the hoist 31a, whereby the pulley of the counterweight 20 is obtained in step S11. The main rope exchanging jig 11 lowered to the vicinity of 24 is raised to the top of the hoistway 100 (S17), and the process returns to the operation of step S3. And operation | movement of procedure S3-S15 is implemented with respect to the old main rope of the next replacement object among the remaining old main ropes 4. FIG.

  On the other hand, when the operator 33 determines in step S16 that the replacement work of all the main ropes has been completed, the main rope replacement jig 11 is removed from the guide rails 21a and 21b (S18), and the main rope using this embodiment is used. Finish the rope replacement work.

  According to the present embodiment configured as described above, when the old main rope 4 to be replaced is replaced with the new main rope 1 for new replacement, the main rope replacement jig 11 is moved as shown in step S11 in the moving process. Since the horizontal bar member 6 is lowered along the guide rails 21a and 21b by the guide members 7a and 7b while holding the new main rope 1 and the old main ropes 4a and 4b, the new main rope 1 is fed into the hoistway 100. At the same time, the old main ropes 4 a and 4 b can be recovered from the lower part of the hoistway 100. Thus, since the two operations of collecting the old main ropes 4a and 4b and laying the new main rope 1 can be performed at the same time, the replacement operation of the main rope can be performed efficiently.

  Further, as shown in step S11 in the moving process, the old main ropes 4a and 4b are held by the horizontal bar member 6 until the main rope replacement jig 11 descends and reaches the vicinity of the pulley 24 of the counterweight 20. The operator 36 on the work table 106 detaches the old main ropes 4a and 4b from the rope connecting means 5a and 5b, so that the old main ropes 4a and 4b are entangled with the devices in the hoistway 100 in steps S11 to S13. And can be easily recovered. Thereby, since the collection | recovery operation | work of the old main ropes 4a and 4b can be performed smoothly, the time spent for the replacement | exchange operation | work of a main rope can be reduced.

  In particular, when the building where the elevator is installed is a high floor, the weight of the existing old main ropes 4a and 4b is increased, but as described above, the old main rope 4a, Since 4b can be easily lowered to the lower part of the hoistway 100, it is possible to save the trouble of installing a large-capacity rope lowering device used to lower a heavy main rope.

  Furthermore, by connecting the old main ropes 4a and 4b to the rope connecting means 5a and 5b as shown in steps S3 and S4 in the connecting step, the load of the old main ropes 4a and 4b on the horizontal bar member 6 is used. Since the tension is applied to the new main rope 1, each member can be lightened accordingly. Thereby, since it becomes easy for an operator to carry each member used in the hoistway 100, each member can be easily assembled or disassembled. In this way, the main rope replacement work can be quickly performed, and the burden on the operator for the main rope replacement work can be reduced, and high workability can be ensured.

  Moreover, since this embodiment can share the load of the old main ropes 4a and 4b applied to the horizontal bar member 6 of the main rope exchanging jig 11 between the hoist 31a and the new main rope 1 in the moving process, the hoist 31a It is not necessary to have the performance necessary to hold the entire load of the old main ropes 4a and 4b, and the hoist 31a can be quantified. Thereby, since the hoist 31a becomes easy to carry, the operator 35 in the machine room 101 can easily install the hoist 31a on the machine beam 102, and can also quickly prepare for the replacement work of the main rope.

  Further, in this embodiment, a hoist 31a is provided at the top of the hoistway 100, and the hoist rope 31b of the hoist 31a is attached to the attachment hole 10 of the main rope changing jig 11, so that the hoist 31a The lifting / lowering operation of the rope exchanging jig 11 can be controlled. Therefore, as shown in step S11 in the movement process, the main rope replacement jig 11 lowered to the vicinity of the pulley 24 of the counterweight 20 is raised to the top of the hoistway 100 by the hoist 31a in the ascent process, thereby exchanging the main rope. The jig 11 can be returned to the top of the hoistway 100 again. This eliminates the need for disassembling and reassembling the main rope replacement jig 11 interposed between the guide rails 21a and 21b when collecting the remaining of the existing old main rope 4, so that the main rope The efficiency of the exchange work can be increased.

  In the above-described embodiment, the case where the rope connecting portions of the rope connecting means 5a and 5b are formed of the eye bolts 5a2 and 5b2 is described. However, the present invention is not limited to this case, and the old main ropes 4a and 4b are cut off. Any member can be used as long as it can support the load, and for example, a member that can be clamped, such as a member that fastens the rope, such as a binder wire, or a rope socket may be used.

DESCRIPTION OF SYMBOLS 1 New main rope 2a, 2b Gold wheel 3a, 3b Protrusion part 4, 4a, 4b, 4c Old main rope 5a, 5b Rope connection means 5a1, 5b1 Through-hole 5a2, 5b2 Eye bolt (rope connection part)
5a3, 5b3 Plain washer 5a4, 5b4 Spring washer 5a5, 5b5 Nut 6 Horizontal bar member 6a, 6b Single bar 7a, 7b Guide member 8a1, 8b1 Bolt 8a2, 8b2, 8a3, 8b3 Plain washer 8a4, 8b4 Spring washer 8a5, 8b5 9a, 9b Long hole 10 Mounting hole 11 Main rope replacement jig 20 Balance weight 21a, 21b Guide rail 22 Rope end 23 Rope socket 24 Pulley 25 Beam pulley 26 Hoisting machine 27 Car 29 29 Rope socket 30 Rope end 31a Hoist 31b Hoist rope DESCRIPTION OF SYMBOLS 100 Hoistway 101 Machine room 102 Machine beam 103a Top floor 103b Bottom floor 104 Pit 105 Support member 106 Work table

Claims (3)

A cage provided in the hoistway, a counterweight suspended from the main cage via the main rope, a pair of guide rails for guiding the counterweight, and a machine room provided above the hoistway A horizontal bar member interposed between the pair of guide rails and disposed above the counterweight, and fixed to both ends of the horizontal bar member, A guide member that is slidably mounted, a gold wheel that is mounted in a state in which a new main rope for replacement is wound around the horizontal bar member, and provided on the horizontal bar member, at the top of the hoistway Using an elevator main rope exchanging jig provided with a rope connecting means for connecting an upper end of an old main rope to be exchanged that is divided at a position where it is suspended and hung to the counterweight side at the lower part of the hoistway The old main rope A main rope method of replacing the elevator to replace in-flops,
A mounting step of hanging the new main rope from the machine room and mounting it on the gold wheel;
The old main rope is divided at a portion located at the top of the hoistway, and the upper end of the divided old main rope that is suspended to the counterweight side at the lower part of the hoistway is connected to the rope connecting means. A connecting step,
And a moving step of moving the lateral bar member downward. In the elevator main rope replacement method according to claim 1,
The main rope replacement jig is provided at the top of the hoistway, and includes a hoist that suspends the horizontal bar member,
In the moving step, the horizontal bar member is lowered by the hoist of the main rope exchanging jig. In the elevator main rope replacement method according to claim 2,
An elevator main rope exchanging method comprising an ascending step of raising the horizontal bar member by the hoist of the main rope exchanging jig after the moving step is performed.

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