JP2015071482A - Elevator device modification method and elevator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an elevator device modification method and an elevator which is not expensive and can suppress lowering of a rope life time with making a rope guide unnecessary.SOLUTION: In an elevator device modification method, an existing hoist is removed, a car rope fixing beam, a weight rope fixing beam, a new hoist and deflect sheaves are installed at the pedestals of an existing machine room, and first to fourth openings are formed at the floor of the machine room with a spacing to each other. One end side of a new rope wound over rope sheaves of the hoist is lowered in a hoistway from the second opening, is wound over a car lifting sheave and raised, is guided to the machine room through the first opening, and the one end the new rope is connected to the car rope fixing beam. The other end side of the new rope wound over the rope sheave of the hoist is lowered in the hoistway from the third opening with changing the trajectory by the deflect sheaves, is wound over a weight lifting sheave and raised, is guided into the machine room through the fourth opening, and the other end of the new rope is connected to the weight rope fixing beam.

Description

  The present invention relates to an elevator apparatus refurbishing method and an elevator apparatus for refurbishing a 1: 1 roping elevator apparatus into a 2: 1 roping elevator apparatus.

  In the conventional elevator apparatus modification method, when a 1: 1 roping elevator apparatus is modified to a 2: 1 roping elevator apparatus, the rope reaches the hoistway from the hoisting machine in the machine room through the existing opening. The second portion reaching the hitch portion in the machine room from the hoistway is brought closer to the first portion within a range not interfering with the first portion in the existing opening by the rope guide installed near the existing opening. Thus, the first portion and the second portion are inserted through the existing opening (for example, see Patent Document 1).

JP 2012-17165 A

  In a conventional elevator apparatus renovation method, a rope guide installed near an existing opening causes the second part to approach within the existing opening within a range that does not interfere with the first part, and the first part and the second part are opened. It is inserted inside. Therefore, it was necessary to use a rope guide, and there was a problem that the cost could not be reduced. Furthermore, there is a problem that the number of times the rope is bent increases and the life of the rope decreases due to the bending of the rope by the rope guide.

  Further, when the rope bending angle by the rope guide is increased, the rope life is reduced. Therefore, it is necessary to increase the installation height of the hoisting machine and reduce the rope bending angle by the rope guide. However, since the installation height of the hoisting machine is limited by the height of the existing machine room, when the height of the existing machine room is low, the 1: 1 roping elevator device is replaced with the 2: 1 roping elevator. The device could not be refurbished.

  The present invention has been made in order to solve the above-described problems, and is a modification of an elevator apparatus that eliminates the need for a rope guide, eliminates an increase in the number of times the rope is bent, and that can suppress a decrease in rope life. The object is to obtain a method and an elevator installation.

  An elevator apparatus repair method according to the present invention includes a car and a counterweight disposed in a hoistway so as to be capable of being raised and lowered, and a suspension core of the car and a counterweight of the counterweight as viewed from above in the vertical direction. And an existing hoisting machine disposed on a pair of machine room bases arranged in two rows on the floor of the machine room, and 1: 1 via a rope passing through the opening formed in the floor. A step of removing the existing hoisting machine in a method of refurbishing the elevator car that suspends the passenger car and the counterweight by roping to the elevator apparatus that supports the passenger car and the counterweight by 2: 1 roping. A step of installing a cage rope retaining beam on the pair of machine room bases, a step of installing a weight rope retaining beam on the pair of machine room platforms, a first opening, a second opening, Forming a third opening and a fourth opening on the floor of the machine room spaced apart from each other; installing a new hoisting machine on the pair of machine room bases; A step of installing, a step of installing a car suspension vehicle on the car, a step of installing a weight suspension vehicle on the counterweight, and a second end of a new rope wound around the sheave of the hoisting machine. It is lowered into the hoistway from the opening, is hung over the car suspension car, is raised, led to the machine room through the first opening, and one end of the new rope is connected to the car rope retaining beam, The other end side of the new rope wound around the sheave of the hoisting machine is changed into a trajectory by the deflector and lowered from the third opening into the hoistway, is lifted over the weight suspension car, Through the 4th opening It led to the machine room Te, and a, a step of connecting the other end of the new rope to the counterweight cleat beam.

  According to the present invention, only the region of the rope from the car rope retaining beam to the car suspension wheel passes through the first opening, and only the region of the rope from the sheave of the hoist to the car suspension vehicle passes through the second opening. Since only the rope region from the sled wheel to the weight suspension vehicle passes through the third opening, and only the rope region from the weight suspension vehicle to the weight suspension beam passes through the fourth opening, the rope guide Is no longer necessary. Therefore, it can be inexpensively modified to a 2: 1 roping elevator device that does not increase the number of times of bending of the rope and can suppress a decrease in the life of the rope.

It is the top view which looked at the elevator apparatus which improved according to Embodiment 1 of this invention from the perpendicular | vertical upper direction. It is a principal part front view which shows the improved elevator apparatus which concerns on Embodiment 1 of this invention. It is a principal part side view which shows the improved elevator apparatus which concerns on Embodiment 1 of this invention. It is the top view which looked at the improved elevator apparatus which concerns on Embodiment 2 of this invention from the perpendicular upper direction. It is a principal part front view which shows the improved elevator apparatus which concerns on Embodiment 2 of this invention. It is a principal part side view which shows the improved elevator apparatus which concerns on Embodiment 2 of this invention. It is the top view which looked at the improved elevator apparatus which concerns on Embodiment 3 of this invention from the perpendicular upper direction. It is a principal part side view which shows the improved elevator apparatus which concerns on Embodiment 3 of this invention. It is the top view which looked at the improved elevator apparatus which concerns on Embodiment 4 of this invention from the perpendicular upper direction. It is a principal part side view which shows the improved elevator apparatus which concerns on Embodiment 4 of this invention. It is a front view which shows typically the structure of the elevator apparatus of 1: 1 roping. It is a side view which shows typically the structure of the elevator apparatus of 1: 1 roping.

  First, before describing the embodiments, an existing 1: 1 roping elevator apparatus will be described with reference to FIGS. 11 and 12. FIG. 11 is a front view schematically showing the configuration of the 1: 1 roping elevator device, and FIG. 12 is a side view schematically showing the configuration of the 1: 1 roping elevator device.

  As shown in FIGS. 11 and 12, the existing elevator apparatus is arranged such that a passenger car 20 and a counterweight 22 are respectively guided by guide rails (not shown) and can be moved up and down in the hoistway 1. Has been. Machine room bases 104 are installed in two rows on the floor 2a of the machine room 2 so as to be separated from each other in parallel. The hoisting machine 100 is installed on a hoisting machine base 103 that is mounted between the machine room bases 104. One end of the rope 105 wound around the sheave 101 of the hoist 100 is lowered into the hoistway 1 through the opening 106 formed in the floor 2 a, and is coupled to the suspension core A of the car 20. The other end of the trajectory is changed by the baffle 102 and is lowered into the hoistway 1 through the opening 107 formed in the floor 2a, and is coupled to the suspension core B of the counterweight 22 to constitute 1: 1 roping. ing.

  The hoisting machine 100 decelerates the rotation of the electric motor using a gear reducer, and drives the sheave 101 to rotate. Therefore, the sheave 101 rotates at a low speed and has a large torque. The rope 105 travels by the rotation of the sheave 101 and the counterweight 22 moves up and down in the hoistway 1 with the car 20.

Embodiment 1 FIG.
1 is a plan view of a modified elevator apparatus according to Embodiment 1 of the present invention as viewed from above, FIG. 2 is a main part front view showing the modified elevator apparatus according to Embodiment 1 of the present invention, FIG. 3 is a side view of an essential part showing the repaired elevator apparatus according to Embodiment 1 of the present invention.

  In FIG. 1 to FIG. 3, the hoisting machine base 3 is arranged along the machine room bases 104 installed in two rows on the floor 2 a of the machine room 2. Is installed. A hoisting machine 5 is installed on a pair of hoisting machine bases 3. A pair of cage rope retaining beams 8 are stretched between a pair of machine room bases 104 and installed on one side in the length direction of the machine room base 104 of the hoisting machine 5. A car rope retaining plate 9 is installed between the pair of machine room bases 104 so as to be spanned between the pair of car rope retaining beams 8. A pair of weight rope retaining beams 10 are spanned between a pair of machine room bases 104 and installed on the other side in the length direction of the machine room base 104 of the hoisting machine 5. A pair of raised beams 11 are installed on the pair of weight rope retaining beams 10. A weight rope retaining plate 12 is installed between the pair of machine chamber bases 104 so as to be spanned between the pair of raised beams 11.

  The 1st opening 13 is formed in the downward position of the cage rope stop board 9 of the floor 2a. The 2nd opening 14 is formed in the downward position of the one side edge part of the length direction of the machine room base 104 of the sheave 6 of the floor 2a. The third opening 15 is formed at a position below the other end portion in the length direction of the machine room base 104 of the deflector 7 of the floor 2a. The fourth opening 16 is formed at a position below the weight rope retaining plate 12 of the floor 2a.

  In the elevator apparatus configured as described above, one end of the rope 17 is connected to the car rope retaining plate 9 through the shackle 18, passes through the first opening 13, and descends into the hoistway 1, and is wound around the car suspension wheel 21. It is hung up and goes up into the machine room 2 through the second opening 14. Then, the rope 17 is wound around the sheave 6 and then the trajectory is changed by the deflector 7. The rope 17 whose trajectory has been changed by the baffle 7 descends into the hoistway 1 through the third opening 15, wraps around the weight suspension car 23 and rises, passes through the fourth opening 16, and is in the machine room 2. Get inside. Then, the other end of the rope 17 is connected to the weight rope retaining plate 12 through the shackle 19 to constitute 2: 1 roping.

  Since this elevator apparatus is configured for 2: 1 roping, a low torque hoisting machine can be used. Here, a thin hoisting machine equipped with a PM (permanent magnet) synchronous motor is used as the hoisting machine 5.

  Next, a method for modifying an existing 1: 1 roping elevator apparatus to a 2: 1 roping elevator apparatus will be described.

  First, the existing hoisting machine 100 and hoisting machine stand 103 are removed. Next, the first opening 13, the second opening 14, the third opening 15, and the fourth opening 16 are opened at a set position on the floor 2 a of the machine room 2 to close the existing openings 106 and 107. The first to fourth openings 13, 14, 15, 16 are located between the existing machine room bases 104 installed in two rows as viewed from above in the vertical direction.

  Next, the anti-vibration rubber 4 is disposed therebetween, and the hoisting machine base 3 is installed on the existing machine room base 104. Thereafter, the winder 5 and the deflector wheel 7 are installed on the winder base 3. At this time, the rope 17 is dropped so that the positions of the suspension cores of the elevator car 20 and the counterweight 22 in the modified elevator apparatus are not different from the positions of the suspension cores of the elevator car 20 and the counterweight 22 in the existing elevator apparatus. The position is set, and the hoisting machine 5 and the deflecting wheel 7 are adjusted so that the rope 17 is dropped to the set position.

  Next, the pair of cage rope retaining beams 8 are spanned between the pair of machine room bases 104 and installed on one side in the length direction of the machine room base 104 of the hoisting machine 5. Then, the car rope retaining plate 9 is placed between the pair of car rope retaining beams 8 and installed between the pair of machine room bases 104. The pair of weight rope retaining beams 10 are spanned between the pair of machine room bases 104 and installed on the other side in the length direction of the machine room base 104 of the hoisting machine 5. Then, the pair of raised beams 11 are installed on the pair of weight rope retaining beams 10. Next, the weight rope retaining plate 12 is placed between the pair of raised beams 11 and installed between the pair of machine room bases 104.

  Next, the car suspension vehicle 21 is installed on the car 20, and the weight suspension vehicle 23 is installed on the counterweight 22. Then, one end side of the rope 17 wound around the sheave 6 is lowered into the hoistway 1 through the second opening 14, wound around the car suspension wheel 21, and raised from the first opening 13 into the machine room 2. The one end is connected to the car rope retaining plate 9 through the shackle 18. Further, the other end side of the rope 17 wound around the sheave 6 is deflected by the wheel 7 to change the track, and is lowered into the hoistway 1 through the third opening 15, wound around the weight suspension wheel 23, and raised. The machine 16 is drawn into the machine room 2 through the opening 16, and the other end is connected to the weight rope holding plate 12 through the shackle 19. This completes the modification of the 1: 1 roping elevator device to the 2: 1 roping elevator device.

  In the first embodiment, a portion of the rope 17 that rises from the car suspension wheel 21 and reaches the car rope retaining plate 9 and a portion of the rope 17 that reaches the sheave 6 are respectively formed in the first and second openings 13 and 14. The portion of the rope 17 that passes through the weight suspension wheel 23 and reaches the sheave 6 and the portion of the rope 17 that reaches the weight rope stop plate 12 are passed through the third and fourth openings 15 and 16, respectively. Therefore, in the prior art, since two ropes are passed through one opening, a rope guide that bends one of the ropes becomes unnecessary, and the cost can be reduced. Further, since the rope 17 is not bent by the rope guide, there is no increase in the number of times the rope 17 is bent, and a decrease in the rope life can be suppressed. Furthermore, since it is not necessary to increase the installation height of the hoisting machine 5 more than necessary, even when the height of the existing machine room 2 is low, the 1: 1 roping elevator device is changed to the 2: 1 roping elevator device. Can be repaired.

  Further, the hoisting machine 5 and the deflector 7 are installed so that the positions of the suspension core A of the car 20 and the suspension core B of the counterweight 22 are the same as those of the existing elevator apparatus. Therefore, since the installation position of the car-side guide rail and the weight-side guide rail does not change even after the refurbishment, it is not necessary to remove and install the car-side guide rail and the weight-side guide rail, thereby reducing the repair cost of the elevator equipment. Can do.

  A car leash retaining plate 9 and a weight leash retaining plate 12 are attached to a pair of car leash retaining beams 8 and a pair of weight leash retaining beams 10 spanned on the machine room base 104. Therefore, since the load received by the cage rope retaining plate 9 and the weight rope retaining plate 12 is received by the existing machine room base 104, a stand for receiving the load received by the cage rope retaining plate 9 and the weight rope retaining plate 12 is newly installed. There is no need.

  Since the height position of the weight rope stop plate 12 is raised by the raising beam 11, the shackle angle when the counterweight 22 is raised to the maximum height position can be reduced, and the rope 17 can be detached from the weight suspension car 23. The occurrence of the situation can be suppressed.

Embodiment 2. FIG.
FIG. 4 is a plan view of a modified elevator apparatus according to Embodiment 2 of the present invention as viewed from above, FIG. 5 is a front view of a main part showing the modified elevator apparatus according to Embodiment 2 of the present invention, FIG. 6 is a side view of an essential part showing a modified elevator apparatus according to Embodiment 2 of the present invention.

4 to 6, a pair of support beams 25 are suspended between a pair of machine chamber bases 104 with a floating base 26 interposed therebetween, and the length of the machine room base 104 of the hoisting machine 5 is extended. Installed on both sides. Then, the rope retaining beam 27 is stretched between the pair of support beams 25, separated from the sheave 6 on the sheave 6 side of the hoist 5, and between the machine chamber bases 104, It is installed to extend in the length direction. In addition, the car rope retaining plate 9 is installed on one side in the length direction of the machine room base 104 of the hoisting machine 5 of the rope retaining beam 27. Furthermore, the weight rope stop plate 12 is installed on the other side in the length direction of the machine room base 104 of the hoisting machine 5 of the rope holder 27.
Other configurations are the same as those in the first embodiment.

  According to the second embodiment, since the car tie plate 9 and the weight tie plate 12 are attached to the same tie beam 27, the number of parts is reduced and the installation cost of the tie plate is reduced.

Embodiment 3 FIG.
FIG. 7 is a plan view of a modified elevator apparatus according to Embodiment 3 of the present invention as viewed from above, and FIG. 8 is a side view of a main part showing the modified elevator apparatus according to Embodiment 3 of the present invention. is there.

In FIG. 7 and FIG. 8, three support beams 25 are stretched between a pair of machine room bases 104 and installed on both sides and the center in the length direction of the machine room base 104 of the hoisting machine 5. Then, the leashing beams 27 are stretched over the three support beams 25, separated from the sheave 6 on the sheave 6 side of the hoist 5, and between the pair of machine room stands 104. It is installed to extend in the length direction. In addition, the car rope retaining plate 9 is installed on one side in the length direction of the machine room base 104 of the hoisting machine 5 of the rope retaining beam 27. Furthermore, the weight rope stop plate 12 is installed on the other side in the length direction of the machine room base 104 of the hoisting machine 5 of the rope holder 27.
Other configurations are the same as those in the first embodiment.

  According to the third embodiment, since the car tie plate 9 and the weight tie plate 12 are attached to the same tie beam 27, the number of parts is reduced and the installation cost of the tie plate is reduced. Further, since the levitation base 26 is omitted, the cost for installing the leash is reduced as compared with the second embodiment.

Embodiment 4 FIG.
FIG. 9 is a plan view of a modified elevator apparatus according to Embodiment 4 of the present invention as viewed from above, and FIG. 10 is a main part side view showing the modified elevator apparatus according to Embodiment 4 of the present invention. is there.

  In FIG. 9 and FIG. 10, the car rope retaining beam 8 is stretched between a pair of machine room bases 104 and installed on one side in the length direction of the machine room base 104 of the hoisting machine 5. A car rope retaining plate 9 is installed in the center of the length direction of the car rope retaining beam 8. The weight rope retaining beam 10 is stretched between a pair of machine room bases 104 and installed on the other side in the length direction of the machine room base 104 of the hoisting machine 5. A weight leash retaining plate 12 is installed on the protruding portion of the weight leash retaining beam 10 from the pair of raised beams 11. Both ends of the rope 17 are connected to the car rope stop plate 9 and the weight rope stop plate 12, respectively.

A pair of support beams 28 are arranged so as to be placed over the pair of machine room bases 104 so as to be spanned between the car rope retaining beam 8 and the weight rope retaining beam 10. The hoisting machine base 3 is disposed along the support beam 28 and is installed on the support beam 28 via the anti-vibration rubber 4. And the installation position of the winding machine 5 and the baffle 7 is adjusted so that the dropping position of the rope 17 from the baffle 7 may become the existing opening 107. FIG.
Other configurations are the same as those in the first embodiment.

  According to the fourth embodiment, since the existing opening 107 is used as the third opening 15, the number of newly opened openings is three, and the rope drilling operation time can be shortened.

  DESCRIPTION OF SYMBOLS 1 Hoistway, 2 Machine room, 2a Floor, 5 Hoisting machine, 6 Sheaves, 7 Baffle, 8 Cage rope stop beam, 10 Weight rope stop beam, 13 1st opening, 14 2nd opening, 15 3rd opening, 16 4th opening, 17 rope, 20 passenger car, 21 car suspension car, 22 counterweight, 23 weight suspension car, 100 existing hoisting machine, 104 machine room base, 107 opening, A suspension car suspension heart, B counterweight Hanging heart.

Claims (7)

A car and a counterweight disposed in the hoistway so as to be movable up and down, and two rows on the floor of the machine room with the suspension core and the counterweight suspended center sandwiched between the elevator and the counterweight. An existing hoisting machine disposed on a pair of installed machine room bases, and the car and the counterweight are suspended by 1: 1 roping through a rope passing through an opening formed in the floor. In the method of refurbishing the supporting elevator apparatus to the elevator apparatus that supports the above-mentioned car and the counterweight by 2: 1 roping,
Removing the existing hoisting machine;
Installing the cage rope retaining beam on the pair of machine room bases;
A process of installing a weight rope retaining beam on the pair of machine room bases;
Forming the first opening, the second opening, the third opening, and the fourth opening on the floor of the machine room apart from each other;
Installing a new hoisting machine on the pair of machine room tables;
Installing the baffle on the pair of machine room bases;
Installing a car suspension car in the car, and
A process of installing a weight suspension car on the counterweight, and
One end of a new rope wound around the sheave of the hoisting machine is lowered into the hoistway from the second opening, is hung over the car suspension car, and is led to the machine room through the first opening. Then, one end of the new rope is connected to the car rope retaining beam, and the other end side of the new rope wound around the sheave of the hoisting machine is changed from the third opening through the third opening by changing the track. Lowering into the hoistway, hanging over the weight suspension car, raising, leading to the machine room through the fourth opening, and connecting the other end of the new rope to the weight rope retaining beam;
A method for repairing an elevator apparatus comprising:   2. The method for repairing an elevator apparatus according to claim 1, wherein the novel hoisting machine and the deflector are arranged so as not to change the positions of the suspension core of the car and the suspension core of the counterweight.   The method for repairing an elevator apparatus according to claim 1 or 2, wherein the opening through which the rope reaching the counterweight from the existing hoisting machine passes is used for the third opening.   The method for refurbishing an elevator apparatus according to any one of claims 1 to 3, wherein the new hoisting machine is a hoisting machine including a PM motor. A car and a counterweight, which are arranged in a hoistway so as to be able to move up and down, respectively, and where a car suspension car and a weight suspension car are arranged,
A pair of machine room bases installed in two rows on the floor of the machine room with the suspension core of the car and the suspension weight of the counterweight interposed therebetween, as viewed from above in the vertical direction;
A hoist installed on the pair of machine room tables;
And a baffle installed on the pair of machine room tables,
In the elevator apparatus in which the car and the counterweight are suspended by 2: 1 roping,
A cage rope retaining beam is installed on the pair of machine room bases,
The weight rope retaining beams are installed on the pair of machine room bases,
A first opening, a second opening, a third opening and a fourth opening are formed on the floor of the machine room apart from each other;
A rope is connected at one end to the car rope retaining beam, passes through the first opening, descends into the hoistway, rises over the car suspension car, and passes through the second opening. Led to the room, wound on the sheave of the hoisting machine, trajectory changed by the deflector, descended into the hoistway through the third opening, passed over the weight hoist and raised An elevator apparatus, wherein the elevator apparatus is guided to the machine room through the fourth opening, and has the other end connected to the weight rope retaining beam.   6. The elevator apparatus according to claim 5, wherein the weight rope retaining beam is installed at a position higher than the car rope retaining beam.   6. The elevator apparatus according to claim 5, wherein the car rope retaining beam also serves as the weight rope retaining beam.

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