JP3841616B2 - Elevator main rope replacement method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator main rope replacement method and apparatus used when exchanging a main rope from an existing one to a new one.
[0002]
[Prior art]
Conventionally, when replacing a main rope from an existing one to a new one, at least one of the existing main ropes has been installed in a hoisting machine, as described in, for example, Japanese Patent Laid-Open No. 7-252052. While switching to a guide device, both ends of the existing main rope hung on the guide device are removed from the passenger car and the counterweight, and a new main rope is connected to one end thereof. Next, after the main rope hung on the guide device is moved by the guidance of the guide device, the existing main rope is separated from the new main rope, one end of the new main rope is connected to the car, and the other end is A method for exchanging the main rope of the elevator has been proposed, which comprises a step of connecting to the counterweight.
[0003]
In addition, as described in JP-A-2-249985, first, a counterweight is held by a counterweight at a lower part of a hoistway, and a cage is lifted by a chain block at an upper part of the hoistway. Is placed above the counterweight and holds the existing main rope. Next, the counterweight side end of the existing main rope is cut off from the rope clamp, the new main rope is connected to the end by a drum, and the car end is disconnected from the rope clamp Attach the part to the drum. Thereafter, the hoisting machine is operated at a low speed, the existing main rope is wound around the drum, the new main rope is fed out from the drum, and the new main rope is sequentially passed over. And the main rope replacement | exchange method of the elevator which consists of the process of connecting each edge part of a newly installed main rope to a rope stopper is proposed.
[0004]
[Problems to be solved by the invention]
By the way, in the former former method mentioned above, in order to arrange | position a guide apparatus, it was necessary to provide an anchor bolt etc. newly, for example in the ceiling part of a machine room. In addition, when it is arranged other than the ceiling, it is necessary to install a frame in the machine room, which requires labor for the installation work of the frame, and work associated with the installation of the frame in a relatively narrow machine room Unavoidable decline in sex and safety.
[0005]
Further, in the latter method of the prior art, the main rope is exchanged by operating the hoisting machine. For example, if the main rope is hooked, six can be exchanged at the same time. There was a problem that six new main ropes and an area for arranging six existing main ropes were required, and when this relatively wide area could not be secured, main rope replacement could not be performed separately.
[0006]
The present invention has been made in view of such a situation in the prior art, and its purpose is to replace the main rope of an elevator that can be divided and replaced without requiring special processing or a frame. It is to provide a method and apparatus.
[0007]
[Means for Solving the Problems]
In order to achieve this object, the invention according to claim 1 of the present invention includes a hoist installed near the top of the hoistway, a car and a counterweight capable of moving up and down in the hoistway, one of which is the hoisting machine. A cage is provided with a plurality of main ropes, the other of which is connected to or wound around the counterweight, and an intermediate part of which is wound around the sheave of the hoisting machine. In the method of exchanging the main rope of the elevator used when exchanging for things,
Fix the passenger car and the counterweight, then connect one end of the new main rope to one end of the existing main rope, and then reduce the frictional force that occurs when the main rope moves between the sheave and the main rope A guide body for interposing a fitting body that fits into the groove of the sheave and protruding higher than the convex portion of the sheave to prevent interference between adjacent main ropes during movement of the main rope. place on, then, it is to pass over the newly main rope pull the existing main rope the new main rope connected by means successively drawn in from the other end.
[0008]
According to the first aspect of the present invention configured as described above, first, the passenger car and the counterweight are fixed at predetermined positions, and then the new main rope is attached to one end of the existing main rope. Connect one end. Thereafter, a fitting body is provided between the sheave and the main rope to be fitted in the groove of the sheave to reduce the frictional force generated when the main rope is moved , and protrudes higher than the convex portion of the sheave. A guide body for preventing interference between adjacent main ropes during the movement of the rope is disposed on the convex portion of the sheave, and then the existing main rope to which the new main rope is connected by the pull-in means is connected to the other end side. Pull in sequentially from the new rope. This eliminates the need for special processing and a frame as in the prior art, and the main rope is sequentially pulled in by the pull-in means without requiring the operation of the hoisting machine, so that the main rope can be replaced in a divided manner. it can.
[0009]
A hoisting machine installed near the top of the hoistway, a car and a counterweight capable of raising and lowering in the hoistway, one connected to the car and the other connected or wound to the counterweight; and In an elevator main rope exchanging apparatus, an intermediate portion of which is provided with a plurality of main ropes wound around a sheave of the hoisting machine, and is used for exchanging the main rope from an existing one to a new one. Rope connecting means for connecting one end of the new main rope to one end of the main rope, pull-in means for sequentially pulling in the existing main rope connected to the new main rope from the other end side, and interposed between the sheave and the main rope is set, the main and fitting portion to be fitted into the groove of the sheave to reduce the frictional force generated during movement of the rope, is disposed on the convex portion of the sheave, the main row protrude higher than the protrusions It is a configuration that includes a guide member for preventing the buffer of the main ropes adjacent at the time of the movement of the.
[0010]
According to the invention of the second aspect of the present invention configured as described above, first, the passenger car and the counterweight are fixed at predetermined positions, and then the new main rope is attached to one end of the existing main rope. Connect one end. Thereafter, a fitting body is provided between the sheave and the main rope to be fitted in the groove of the sheave to reduce the frictional force generated when the main rope is moved , and protrudes higher than the convex portion of the sheave. A guide body that prevents buffering of adjacent main ropes during movement of the rope is disposed on the convex portion of the sheave, and then the existing main rope to which the new main rope is connected by the pull-in means is connected to the other end side. Pull in sequentially from the new rope. In this way, the main rope is sequentially pulled in by the pull-in means. At this time, the pull-in weight can be reduced by the fitting body and the guide body, so that the pull-in means can be made small and lightweight. There is no need for special processing and frame. Further, since the main rope is pulled in sequentially by the pulling means without requiring the operation of the hoisting machine, the main rope can be exchanged in a divided manner.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of an elevator main rope replacement method and apparatus according to the present invention will be described below with reference to the drawings.
[0012]
FIG. 1 is a longitudinal sectional view showing an embodiment of an elevator main rope exchanging apparatus of the present invention, FIG. 2 is a flowchart showing an elevator main rope exchanging method of the present invention, and FIG. 3 is a rope of the main rope exchanging apparatus of FIG. FIG. 4 is an enlarged view of a main part showing a hoisting machine around which a main rope is wound, and FIG. 5 is an enlarged view of a main part showing a rope connecting means of the main rope exchanging device in FIG. .
[0013]
As shown in FIG. 1, an elevator is generally wound around a hoisting machine 3 disposed on a machine beam 19 installed in a machine room 2 above a hoistway 1 and a sheave 3 a of the hoisting machine 3. For example, six existing main bodies, each of which is suspended in the hoistway 1 and formed in a loop shape, and whose both ends are supported on the floor 2a of the machine room 2 via rope stoppers 10 and 11, respectively. A rope 4 and a pulley 5 that engages with one suspended portion of the existing main rope 4 are provided at the top, and a car 6 that is lifted in the hoistway 1 via the pulley 5 and the other suspended portion of the existing main rope 4. A pulley 7 that engages with the portion is provided at the top, and a counterweight 8 that is lifted in the hoistway 1 via this pulley 7 and a sled pulley 9 that is installed in the machine room 2 and on which the existing main rope 4 is wound. Have.
[0014]
The main rope exchanging device of this embodiment is installed in the pit 18 at the lower part of the hoistway 1 when exchanging the main rope, and either one of the elevator car 6 and the counterweight 8, for example, in FIG. A holding base 12 that holds a weight 8, a chain block 13 that is installed in the machine room 2 and holds the other lifting body, for example, the car 6 in a state where it is suspended above the hoistway 1 in FIG. Guide means 14a and 14b for guiding 20, a pull-in means 15 for sequentially pulling in the existing main rope 4 which is installed on the car 6 and connected to the new main rope 20, and the existing main rope 4 is, for example, a counterweight rail 8a. A fixed body 16 to be fixed to the cable, rope connecting means for connecting one end of the new main rope 20 to one end of the existing main rope 4, for example, a rope connecting body 17 and an elevator hall 24, the drum 28 around which the new main rope 20 is wound, the storage container 21 for storing the existing main rope 4 drawn in by the pulling means 15, the sheave 3a and the existing main rope 4d as shown in FIG. 4e, 4f, 4g, 4h, 4i, and a fitting body 30a that is fitted into each of the groove portions 33 of the sheave 3a, for example, rope guide means for reducing the frictional force generated when the existing main ropes 4d to 4i move. , 30b, 30c, 30d, 30e, and 30f, and guide bodies 31a, 31b, and 31c arranged between the convex portions 34 of the sheave 3a so as to prevent the adjacent existing main ropes 4d to 4i from interfering with each other. Yes. The pulling means 15 described above is more desirable to feed the rope endlessly than to wind the rope by rotating the drum by power, and this embodiment is the latter.
[0015]
In this embodiment, as shown in FIG. 2, first, as a step S <b> 1, the holding base 12 is installed in the pit 18 below the hoistway 1, the counterweight 8 is held by the holding base 12, and the machine beam 19 The chain book 13 is installed on the vehicle, and the chain block 13 is engaged with the car 6 and held in a state where it is wound up by the length of the initial elongation of the new main rope 20 calculated in advance. Next, in step S2, the retracting means 15 is fixed to a cross head (not shown) on the car 6, and in step S3, the existing main rope 4 is fixed to the counterweight rail 8a by the fixing body 16, for example. Thereafter, in step S4, the existing main rope is cut on the machine room 2 side from the fixed position shown in step S3, and the existing main rope 4 is connected between the pulley 5 on the car 6 and the rope stopper 10. The new main rope 20 is drawn from the drum 28 installed in the elevator hall 24 through the guide means 14 a and 14 b, and the new main rope 20 and the existing main rope 4 are connected by the rope connector 17. As shown in FIG. 5, the rope connecting body 17 is installed so as to wrap the portion where the ropes 4 and 20 are attached together, and the ropes 4 and 20 are pulled to form a cylindrical net. The ropes 4 and 20 are connected by the connection body 17 contracting.
[0016]
Next, as step S5, the existing main ropes 4d to 4i are lifted by the sheave 3a as shown in FIG. 4, and the fitting bodies 30a to 30f are interposed between the sheave 3a and the existing main ropes 4d to 4i as shown in FIG. In addition, the frictional force generated when the existing main ropes 4d to 4i are moved is reduced, and the guide bodies 31a to 31c are arranged between the convex portions of the sheave 3a so that the adjacent existing main ropes 4d to 4i are arranged. Avoid interference when moving. Then, the existing main rope 4 is attached to the retracting means 15 as the procedure S6, the retracting means 15 is operated as the procedure S7, the existing main rope 4 is sequentially retracted and stored in the storage container 21, and the new main rope 20 is connected to the pulley 7. The baffle pulley 9, the sheave 3 a, and the pulley 5 are sequentially passed over. At this time, the existing main rope 4 and then the new main rope 20 are moved sequentially through the sheave 3a, but the fitting bodies 30a to 30f are interposed between the sheave 3a and the existing main rope 4 or the new main rope 20 as described above. Therefore, the frictional force generated during movement is reduced. Thereafter, as step S8, the respective ends of the newly installed main rope 20 are connected to the rope stoppers 10 and 11. This series of steps is sequentially performed on the six existing main ropes 4 and the new main rope 20. Next, in step S9, the chain block 13 is loosened, the car 6 is suspended by the new main rope 20, the rope tension of the new main rope 20 is adjusted by the rope stoppers 10 and 11, and the rope replacement work is completed.
[0017]
In the present embodiment configured as described above, the main ropes 4 and 20 are sequentially pulled in by the pull-in means 15, but at this time, the pull-in means 15 can be reduced by the rope guide means, that is, the fitting bodies 30a to 30f. Therefore, there is no need for special processing or a frame as in the prior art. Further, since the main ropes 4 and 20 are sequentially pulled in by the pull-in means 15 without requiring the operation of the hoisting machine 3, the main ropes can be replaced in a divided manner.
[0018]
FIG. 6 is an enlarged view of a main part showing another embodiment of the rope guiding means shown in FIG.
[0019]
As shown in FIG. 6, the rope guide means 32 of another embodiment is fitted in each groove portion 33 of the sheave 3a, for example, and the existing main ropes 4d to 4i are fitted with groove portions that can be engaged with a relatively small ground contact area. and coalescing 32a, and a further guide member 32 b of the existing main rope 4d~4i does not interfere during movement adjacent protruding higher than the protrusions 34 of the sheave 3a.
[0020]
In another embodiment, when the rope guiding means is interposed between the sheave 3a and the existing main ropes 4d to 4i in the above-described step S5, the existing main ropes 4d to 4i are lifted by the sheave 3a, as shown in FIG. As shown, a fitting body 32a of another guiding means 32 is interposed between the sheave 3a and the existing main ropes 4d to 4i, and the adjacent existing main ropes 4d to 4i project higher than the convex portion 34 of the sheave 3a and interfere when moving. Since the guide body 32b is provided to prevent the friction, a frictional force generated when the existing main ropes 4d to 4i are moved is reduced.
[0021]
As another embodiment, an overall view of an elevator in which the machine room 2 is not installed above the hoistway 1 as shown in FIG. 1 and the hoisting machine 3 is installed above the hoistway 1 is shown in FIG. Shown in
[0022]
In FIG. 8, the car 6 runs vertically along the car side guide rails 6 a and 6 b mounted in the hoistway 1. The counterweight 8 also travels vertically along the counterweight-side guide rails 8a and 8b installed in the hoistway 1. The car 6 and the counterweight 8 are supported by the rope 4 and run. The rope 4 has two ends and consists of several parallel ropes. The hoisting machine 3 is mounted on the upper end of one of these guide rails 6b , 8b. The hoisting machine 3 is provided with a sheave 3a. One of the ends of the rope 4 is fixed to the upper end of the guide rail 6a by a rope stopper 10, and the rope 4 is sent to the sheave 3a of the hoisting machine 3 attached to the upper end of the guide rail 6b. . From here, the rope 4 is sent to the rope stopper 11 attached to the upper end of the counterweight side guide rail 8b via the pulley 7 of the counterweight 8, and is fixed. In the case of exchanging the rope of the elevator having such a configuration, the difference from the case of FIG. 1 is that the existing main rope 4 rises to the rope stopper 10 via the pulleys 40a and 40b below the car 6. The guide means 14c is added, and the rope 4 is attached to the retracting means 15 through the guide means 14c. Therefore, even in an elevator having such a structure, the existing main rope 4 can be replaced with the new main rope 20 in the process shown in FIG.
[0023]
In another embodiment configured as described above, the main ropes 4 and 20 are sequentially pulled in by the pull-in means 15 in the same manner as described above. At this time, the rope guide means, that is , the fitting body 32a and the guide body 32b of the other guide means 32 are used. Since the weight of the pull-in can be reduced, the pull-in means 15 can be made small and light, and therefore, special processing and a frame body as in the prior art are not required.
[0024]
FIG. 7 is an enlarged view of a main part showing another embodiment of the rope connecting means shown in FIG.
[0025]
As shown in FIG. 7, the rope connecting means of another embodiment is, for example, a strand 4a and a strand 20a formed by loosening ends of the existing main rope 4 and the new main rope 20, and a strand 4b, a strand 20b and a strand 4c. And crimping members 22a, 22b and 22c for crimping and connecting the strands 20c.
[0026]
In another embodiment, when one end of the new main rope 20 is connected to one end of the existing main rope 4 in the above-described procedure S4, the ends of the existing main rope 4 and the new main rope 20 are loosened, and the strand 4a. The strands 20a, the strands 4b, the strands 20b, the strands 4c, and the strands 20c are crimped and connected by the crimping members 22a to 22c, respectively, so that the cross-sectional diameters of the connecting portions are smaller than the cross-sectional diameters of the existing main ropes 4 To do.
[0027]
【The invention's effect】
Since the present invention is configured as described above, the main rope is exchanged by a small and lightweight pull-in means, so that no special processing or frame as in the prior art is required, and therefore workability and safety are improved. Can be improved.
[0028]
In addition, the main rope can be exchanged in a divided manner, whereby the main rope can be exchanged smoothly even in an elevator that can ensure only a relatively small work area.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an embodiment of an elevator main rope exchanging apparatus according to the present invention.
FIG. 2 is a flowchart showing a method for exchanging the main rope of the elevator according to the present invention.
FIG. 3 is an enlarged view of a main part showing rope guide means of the main rope exchanging apparatus of FIG. 1;
FIG. 4 is an enlarged view of a main part showing a hoisting machine on which a main rope is wound.
FIG. 5 is an enlarged view of a main part showing rope connecting means of the main rope exchanging device in FIG. 1;
6 is an enlarged view of a main part showing another embodiment of the rope guiding means shown in FIG. 3. FIG.
7 is an enlarged view of a main part showing another embodiment of the rope connecting means shown in FIG. 5. FIG.
FIG. 8 is a longitudinal sectional view showing another embodiment of the main rope exchanging apparatus for an elevator according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hoistway 2 Machine room 3 Hoisting machine 3a Sheave 4 Existing main ropes 5, 7 Pulley 6 Car 6a, 6b Car side guide rail 8 Balance weight 8a, 8b Balance weight side guide rail 9 Bending pulleys 10, 11 Rope stop Metal fitting 12 Holding base 13 Chain block 14c Guide means 15 Retraction means 17 Rope connection body (rope connection means)
20 New main rope 21 Storage container 22a, 22b, 22c Crimp member (rope connection means)
28 Drum 30a, 30b, 30c, 30d, 30e, 30f Fitting body (rope guide means)
31a, 31b, 31c Guide body (rope guide means)
32 Other guide bodies (rope guide means)
40a, 40b Car lower pulley

Claims (2)

A hoisting machine installed near the top of the hoistway, a car and a counterweight capable of raising and lowering in the hoistway, one connected to the car and the other connected or wound to the counterweight; and In the elevator main rope replacement method used when the intermediate portion includes a plurality of main ropes wound around the sheave of the hoisting machine, and this main rope is replaced from an existing one to a new one.
Fix the passenger car and the counterweight, then connect one end of the new main rope to one end of the existing main rope, and then reduce the frictional force that occurs when the main rope moves between the sheave and the main rope A guide body for interposing a fitting body that fits into the groove of the sheave and protruding higher than the convex portion of the sheave to prevent interference between adjacent main ropes during movement of the main rope. A method for exchanging a main rope of an elevator, wherein the main rope is arranged on the upper side, and then the existing main rope to which the new main rope is connected by a drawing means is sequentially drawn from the other end side and the new main rope is passed over. A hoisting machine installed near the top of the hoistway, a car and a counterweight capable of raising and lowering in the hoistway, one connected to the car and the other connected or wound to the counterweight; and In the main rope exchanging device for an elevator used when the intermediate portion includes a plurality of main ropes wound around the sheave of the hoisting machine, and this main rope is exchanged from an existing one to a new one.
Rope connection means for connecting one end of the new main rope to one end of the existing main rope, pull-in means for sequentially drawing the existing main rope connected to the new main rope from the other end side, and between the sheave and the main rope A fitting body fitted in the sheave groove to reduce the frictional force generated when the main rope is moved, and is disposed on the convex portion of the sheave and protrudes higher than the convex portion to move the main rope. A main rope exchanging apparatus for an elevator, comprising a guide body for preventing interference between adjacent main ropes at the time .

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