JP6556325B2 - Connecting device for elevator drive - Google Patents

Description

  The present invention relates to a connecting device for an elevator driving machine that uses an elevator provided by connecting two driving machines using a connecting member at the time of a power failure or the like and moves a car.

  Conventional rescue methods for large-capacity elevators include a method of using a battery at the time of a power failure, and a method of moving a car using gravity by an opening operation of a braking device of a driving machine. In the method using a battery, the control panel or the drive unit is operated via a control unit instead of the control panel by supplying power from the battery, and the car arranged in the drive unit is moved up and down via a hoisting rope. Is disclosed in Patent Document 1 as a prior art.

  In addition, in the method of moving the car using gravity by opening the braking device of the driving machine, the winding machine type sheave and the driving machine having the braking system are arranged at the lower part of the hoistway and wound around the sheave. One end of the rope that is installed at the top of the hoistway is connected to the car via a pulley. Patent Document 2 discloses a conventional technique for gradually lowering a car by using gravity by causing a braking device to repeatedly open and brake.

JP2012-180137A JP 2000-247558 A

  In the prior art, since a method using a battery requires electric power, there is a problem that the car cannot be raised or lowered when electric power cannot be supplied from the battery. In addition, as for the method of moving the car using gravity, if the car and the counterweight are unbalanced, the car can be lifted and lowered by repeating the operation of opening and braking the braking device. There is a problem that cannot be applied in a balanced state where the car does not move up and down even when the braking device is opened.

  The present invention has been made to solve such a problem, and does not require power supply, and when the car and the counterweight are in a balanced state, the car is raised and lowered to rescue passengers in the car. Objective.

The connecting device for an elevator driving machine according to the present invention is connected to the shaft end of the rotating body of at least two elevator driving machines provided with a rotating body that lifts and lowers the weight of the car and the counterweight via a hoisting rope. A member is provided.
In addition, another connecting device for an elevator drive according to the present invention is connected to a motor for driving at least two elevator drives each provided with a rotating body that lifts and lowers a weight with a car via a hoisting rope. The connecting member is provided.

  According to the present invention, the car can be raised and lowered without supplying power even in a balanced state where the car does not move up and down even when the braking device is opened.

It is a block diagram which connects the two elevator apparatuses in Embodiment 1 which concern on this invention with a connection apparatus. It is a top view connected with the drive machine of the two elevator apparatuses in Embodiment 1 which concerns on this invention via a connection apparatus. FIG. 3 is an enlarged view of a portion A in FIG. 2. It is a top view connected with the drive machine of the two elevator apparatuses in Embodiment 2 which concerns on this invention through a connection apparatus. It is an enlarged view which shows the coupling device in Embodiment 2 which concerns on this invention. It is a top view which installs the normal time coupling device in Embodiment 3 which concerns on this invention. It is a block diagram of the two elevator apparatuses at the normal time in Embodiment 3 which concerns on this invention. It is a top view connected with the drive device of the two elevator apparatuses at the time of abnormality (or rescue time) in Embodiment 3 which concerns on this invention via a connection device. It is a figure connected with the drive machine of the two elevator apparatuses in Embodiment 4 which concerns on this invention via a connection apparatus.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below. The present invention is not limited to the first embodiment. In Embodiment 1 of the present invention, at least two elevator apparatuses are connected via a connecting member, and the other elevator apparatus is rotated by rotating the rotating body of the drive device of the other elevator apparatus by imbalance of the other elevator apparatus. Raise and lower the basket.

  The first embodiment will be described with reference to FIGS. 1, 2, and 3.

  FIG. 1 is a diagram showing a configuration in which two elevator apparatuses are connected via a connecting apparatus according to the present invention. Two elevator apparatuses are provided side by side, and the rotating shafts of the rotating bodies of the two drive machines are coaxial. In FIG. 1, each configuration will be described using one of the two elevator apparatuses. The driving machine 1a is a driving machine that is installed in a hoistway (not shown) and moves the car 2a up and down. The car 2a is used by passengers. The counterweight 3a is provided at a position facing the car 2a in order to balance the weight of the car 2a. The hoisting rope 4a suspends and supports the counterweight 2a and the counterweight 3a, and guides the lifting and lowering of the counterweight 2a and the counterweight 3a by driving of the driving machine 1a. The baffle wheel 5a is disposed below the driving machine 1a and used in an auxiliary manner in order to keep the distance between the car 2a and the counterweight 3a constant. The connecting member 6 connects two elevator apparatuses.

  In the basic operation of the elevator apparatus, when the elevator apparatus is operated, the rotating body of the driving machine 1a is rotated by supplying electric power, and the rotating body of the driving machine 1a moves up and down the counterweight 3a with the car 2a via the hoisting rope 4a. . When braking an elevator apparatus, rotation of the drive machine 1a is stopped by a brake apparatus (not shown) installed in the drive machine 1a, and raising / lowering of the car 2a and the counterweight 3a is stopped. On the other hand, at the time of a power failure, the drive machine 1a cannot be rotated by power supply, and the drive machine 1a cannot lift and lower the counterweight 3a with the car 2a by electric power. According to the present invention, in the case of a power failure and in a balanced state with a car and a counterweight, the car can be lifted and lowered to rescue passengers in the car without supplying power by the battery.

  FIG. 2 is a diagram in which two elevator apparatuses are installed side by side, and a driving machine is coupled through a coupling apparatus. The braking device 9a is a braking device that brakes the rotation of the drive machine 1a.

  FIG. 3 is an enlarged view of A of FIG. In FIG. 3, the structure and installation of the connecting member 6 installed at the shaft end of the drive machine 1a of one of the two elevator apparatuses will be described.

  The connecting member 6 includes a connecting shaft 61 that is an intermediate portion, and connecting flange portions (connecting fixing portions) 62 provided at both ends of the connecting shaft 61. In this embodiment, the connecting shaft 61 has a cylindrical shape. The connection flange portion 62 is a protrusion that protrudes around the connection shaft 61. Here, the shapes of the connecting shaft 61 and the connecting flange portion 62 are not limited.

  The spacer 7a is disposed between the connecting flange portion 62 of the connecting member 6 and the driving machine 1a. The spacer 7a is inserted into the joint of parts in order to adjust the interval appropriately. In the first embodiment, the spacer 7a has a cylindrical shape, but is not limited to a cylindrical shape. Further, a spacer flange portion 71 a for joining to the connection flange portion 62 of the connection member 6 is provided on one side of the spacer 7 a. The spacer flange portion 71 a is fixed via the connecting flange portion 62 and the bolt 10. On the other side of the spacer 7a, a recess 72a for fixing to the rotating body 8a of the driving machine 1a is provided.

  A rotating shaft fixing portion 81a is provided at the shaft end of the rotating body 8a. The rotating shaft fixing portion 81a is a stepped convex portion 81a. A stepped convex portion 81 a is fitted into the concave portion 72 a of the spacer 7 a and is fixed via the bolt 10. On the other hand, a convex portion may be provided on the spacer 7a side, and a concave portion may be provided at the shaft end portion of the rotating body 8a. Moreover, the shape of the recessed part 72a and the convex part 81a is not limited, What is necessary is just to be able to fix the spacer 7a and the rotating shaft 8a.

  Next, a rescue operation using the connecting device according to the first embodiment will be described with reference to FIGS. 1, 2, and 3.

  Let the elevator apparatus a be a rescue side, and let the elevator apparatus b be a rescue side. The rescue of the car 2a when the drive machine 1a and a control device (not shown) are stopped in the case of a power failure and in a state where the balance between the car 2a and the counterweight 3a is achieved will be described. First, the cover of the drive machine 1a (rescued side) of the elevator apparatus a is removed, and the convex portion 81a at the shaft end of the rotating body 8a is exposed. The projection 81a at the end of the shaft is fitted into the recess 72a of the spacer 7a and fixed via the bolt 10. Similarly, the drive unit 1b (rescue side) of the side elevator b also removes the cover, exposes the convex part 81b of the shaft end of the rotating body 8b, fits the convex part 81b into the concave part 72b, and fixes it via the bolt 10. . Further, the connecting member 6 is disposed between the spacer 7a and the spacer 7b. The connecting member 6 and the spacer 7a, and the connecting member 6 and the spacer 7b are fixed with bolts 10, respectively. As a result, the rotary shaft 8a of the rescue-side drive machine 1a is connected to the rotary shaft 8b of the rescue-side drive machine 1b.

  Thereafter, the braking devices 9a and 9b of the two driving machines 1a and 1b are simultaneously opened. The rotating body 8a of the rescue-side driving machine 1a is rotated through the connecting member 6 by imbalance between the car 2b and the counterweight 3b in the side-by-side elevator apparatus b, and the rotating body 8a rotates to rotate the rotating apparatus 8a. The car 2a can be raised and lowered. Further, the car 2a can be moved to the rescue floor by repeating the braking operation and the releasing operation of the braking device 9a.

  In the first embodiment, the car 2a on the rescue side can be rescued via the connecting member 6 due to the imbalance of the elevator apparatus b.

  In the first embodiment, the car 2a on the rescue side and the counterweight 3a have a small unbalance and the car 2a cannot be lifted or lowered even when the braking device 9a is opened. When the weight 3a is in a balanced state, the rotating body 8a of the driving machine 1a and the rotating body 8b of the driving machine 1b are connected by the connecting member 6 to use the unbalance between the rescue-side car 2b and the counterweight 3b. The car 2a on the rescue side can be raised and lowered to the rescue floor. As a result, the car can be rescued in the event of a power outage, in a state where the balance between the car and the counterweight is balanced, or in the event of an abnormality such as damage to the rescue side drive or control device. it can.

Embodiment 2. FIG.
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 1, 4, and 5. FIG. Constituent elements common to the first embodiment are denoted by the same reference numerals and description thereof is omitted. In the first embodiment, when the rotating shafts of the rotating bodies of the two elevator apparatuses are coaxial, the rescue is performed via the connecting member 6. However, in the second embodiment, driving of the two elevator apparatuses is performed. Even if the rotational axes of the body rotating bodies 8a and 8b are not coaxial, the same effect as in the first embodiment can be obtained.

  FIG. 4 is a diagram in which the rotating bodies 8a and 8b of the driving machine are connected via the connecting device 6 when the rotating shafts of the rotating bodies 8a and 8b of the two driving machines in the second embodiment are not coaxial. is there. The spacer 7a is provided with a recess 72a and a spacer fixing portion (not shown) for fixing to the connecting member 6, and the spacer 7b is arranged to face the spacer 7a, and is fixed to the recess 72b and the connecting member 6 (spacer fixing portion (not shown). (Not shown).

  FIG. 5 is an enlarged view of the connecting member 6 of FIG. The connecting member 6 is a member that can expand and contract according to the distance between at least two rotating bodies. The connecting member 6 according to the second embodiment can be adjusted in length by the distance between the rotating shafts of the drive units of the two elevator apparatuses, and is a columnar expansion / contraction member. The connecting member 6 has a columnar connecting shaft A63 and a hollow columnar connecting shaft B64. The diameter of the connecting shaft A63 is smaller than the diameter of the connecting shaft B64. In addition, a plurality of holes 65 are provided in each of the connecting shaft A63 and the connecting shaft B64. In the second embodiment, the diameters of the holes 65 are the same, and the distances between the two holes 65 are equally spaced. The connecting shaft A63 and the connecting shaft B64 may be fixed without defining the diameters of the plurality of holes 65 provided in the connecting shaft A63 and the connecting shaft B64 and the distance between the two holes 65. Furthermore, universal joints 67 are provided at both ends of the connecting member 6. The universal joint 67 is fixed to the spacer fixing portion of the spacer 7 with a bolt. The universal joint 67 can freely change the angle at which the two rotating axes intersect within a certain range.

  Next, assembly of the connecting member 6 will be described. The connecting shaft A63 is inserted into the hollow portion of the connecting shaft B64, and the connecting shaft A63 is engaged with the connecting shaft B64. After that, the position of the hole 65 provided in the connecting shaft A63 and the position of the hole 65 provided in the connecting shaft B64 are aligned from the cylindrical side surface, and the pin 66 is inserted into the two aligned holes 65 to be connected to the connecting shaft A63. The axis B64 is fixed. On the other hand, the total length of the connecting shaft A63 and the connecting shaft B64 is changed by shifting the connecting shaft A63 and the connecting shaft B64 and changing the hole 65 corresponding to the connecting shaft A63 and the connecting shaft B64. Thereby, it can connect even if the distance between the rotary bodies of the drive machine of two elevator apparatuses differs.

  The connecting member 6 according to the second embodiment is a columnar expansion / contraction member whose length can be adjusted. The shape of the connecting member 6 is not limited, and there may be a corner, and it is only necessary to connect the rotating bodies of the driving machine.

  The rescue operation of the second embodiment is the same as that of the first embodiment. By connecting the rotating body 8a of the driving machine 1a and the rotating body 8b of the driving body 1b to each other by the connecting member 6, the rescue-side car 2a If the unbalance with the counterweight 3a is small and the car 2a cannot be raised or lowered even if the braking device 9a is released, or if the counterweight 2a and the counterweight 3a are in a balanced state, the counterbalance is balanced with the car 2b on the rescue side. Using the unbalance with the weight 3b, the rescued car 2a can be lifted and lowered. The second embodiment can obtain the same effect as the first embodiment. Moreover, in Embodiment 2, it can rescue even if the rotating shaft of the rotary body of two drive machines is not coaxial.

Embodiment 3 FIG.
The third embodiment of the present invention will be described below with reference to FIGS. 6, 7, and 8. FIG. Constituent elements common to the first embodiment are denoted by the same reference numerals and description thereof is omitted. In the first and second embodiments, the rotating body of the rotating shaft 8 is physically connected by the connecting member 6, whereas in the third embodiment, the motor 11b for driving the rescue-side driving machine 1b and the target are connected. It is the structure which connects the motor 11a which drives the rescue side drive machine 1a with a connection member.

  FIG. 6 is a diagram in which the drive machines 1a and 1b of the two elevator apparatuses according to the third embodiment are installed during normal operation. As shown in FIG. 6, the motor 11a and the control panel a for driving the drive machine 1a and the motor 11b and the control panel b for driving the drive machine 1b are connected to each other via power wires 13a and 13b, respectively. The terminal block 12 is provided between the control panel a and the control panel b. In the third embodiment, the terminal block 12 is a connecting member.

  FIG. 7 is a configuration diagram in which two elevator apparatuses are installed during normal operation.

  FIG. 8 is a diagram of connecting the drive machines 1a and 1b of the two elevator apparatuses according to the third embodiment with the terminal block 12 in the event of an abnormality (at the time of rescue). In FIG. 8, the motor 11a that drives the drive machine 1a and the terminal block 12 are connected via a power wire 13a, and the motor 11b that drives the drive machine 1b and the terminal block 12 are connected via a power wire 13b. .

  Hereinafter, the rescue operation of the third embodiment will be described with reference to FIG. 6, FIG. 7, and FIG. In the third embodiment, the car 2a is the rescued side and the car 2b is the rescue side, as in the first and second embodiments. First, the power wire 13a from the motor 11a of the driving machine 1a for raising and lowering the car 2a to the control panel a is removed from the control panel a and attached to the terminal block 12. In addition, the power cable 13b from the motor 11b of the drive unit 1b to the control panel b is removed from the control panel b and attached to the terminal block 12. Thereafter, the two braking devices 9a and 9b are simultaneously opened, and the rotating body of the side-mounted driving machine 1b having an unbalance rotates. An electromotive force is generated in the motor 11b by the rotation of the rotating body of the driving machine 1b, and the electromotive force is supplied to the motor 11a of the driving machine 1a that moves the car 1a up and down through the power wire 13b, the terminal block 12, and the power wire 13a. . For this reason, the motor 11a can rotate the rotary body of the drive machine 1a, and can raise / lower the cage | basket | car 2a.

  In the third embodiment, the motors 11a and 11b of the two driving machines 1a and 1b are connected by the terminal block 12 so that the unbalance between the rescue-side car 2a and the counterweight 3a is small, and When the car 2a cannot be raised or lowered even when the braking device 9a is opened, an electromotive force is generated in the rescue-side motor 11b by unbalance between the rescue-side car 2b and the counterweight 3b. Then, the rescue-side motor 11a rotates the rotating body of the driving machine 1a to raise and lower the car 2a. Thereby, the car 2a can be rescued at the time of a power failure, in the case of a balance between the car 2a and the counterweight 3a, and in the case of an abnormality such as a damaged drive device or control device on the rescue side.

Embodiment 4 FIG.
The fourth embodiment of the present invention will be described below with reference to FIGS. Constituent elements common to the third embodiment are denoted by the same reference numerals and description thereof is omitted. In the fourth embodiment, the connecting member is always arranged with respect to the structure in which the connecting member is attached at the time of rescue of the third embodiment.

  FIG. 9 is a diagram of connecting the drive units of the two elevator apparatuses according to the fourth embodiment with connecting members. As shown in FIG. 9, the wiring 14 is installed between the power wires 13a and 13b, and the connecting members 15 are arranged between the power wires 13a and 13b and the wire 14, respectively. In the fourth embodiment, the connecting member 15 is the changeover switch 15 and is not limited to this.

  The changeover switch 15 switches between normal and abnormal (or rescue). In normal times, the motor 11a and the control panel a are connected by a power cable 13a, and the motor 11b and the control panel b are connected by a power cable 13b. At the time of rescue, the changeover switch 15 is switched to the rescue side so that the motor 11a and the control panel a are not connected, the motor 11b and the control panel b are not connected, and the motor 11a and the motor 11b are connected to the wiring 14 and the changeover switch. 15 are connected. The changeover switch 15 can be installed either automatically or manually.

  Hereinafter, the rescue operation of the fourth embodiment will be described with reference to FIGS. In the fourth embodiment, the car 2a is the rescue side and the car 2b is the rescue side, as in the first to third embodiments. At the time of rescue, the changeover switch 15 is switched to the rescue side. Thereafter, the two braking devices 9a and 9b are simultaneously opened, and a rotating body (not shown) of the side-mounted driving machine 1b having an unbalance rotates. An electromotive force is generated in the motor 11b by the rotation of the rotating body, and the electromotive force is supplied to the motor 11a that moves the car 1a up and down through the changeover switch 15b, the wiring 14, and the changeover switch 15a. For this reason, the motor 11a can rotate the rotary body of the drive machine 1a, and can raise / lower the cage | basket | car 2a.

  The fourth embodiment can be rescued more easily than the third embodiment because no mounting work is required. Further, the same effect as in the third embodiment can be obtained.

  Moreover, you may combine arbitrary embodiment from said Embodiment 1 to Embodiment 4. FIG.

DESCRIPTION OF SYMBOLS 1 Drive machine, 2 cage | baskets, 3 counterweight, 4 hoisting rope, 5 baffle wheel, 6 connection member, 61 connection shaft, 62 connection flange part, 63 connection shaft A, 64 connection shaft B, 65 hole, 66 pin, 67 Universal joint, 7 Spacer, 71 Spacer flange (spacer fixing part), 72 Recessed part, 8 Rotating body, 81 Convex part (rotating shaft fixing part), 9 Braking device, 10 bolt, 11 Motor, 12 Terminal block, 13 Power cable , 14 wiring, 15 selector switch

Claims (7)

A connecting device for an elevator driving machine that connects at least two elevator driving machines provided with a rotating body that lifts and lowers a weight with a car via a hoisting rope,
A connecting member connected to the shaft end of at least two of the rotating bodies ;
A connecting device for an elevator driving machine, wherein a universal joint is provided at both ends of the connecting member . A connecting device for an elevator driving machine that connects at least two elevator driving machines provided with a rotating body that lifts and lowers a weight with a car via a hoisting rope,
A connecting member connected to the shaft end of at least two of the rotating bodies ;
A connecting device for an elevator driving machine , comprising: a spacer disposed between a shaft end portion of the rotating body and the connecting member . Providing a convex portion at the shaft end of the rotating body,
The connecting device for an elevator driving machine according to claim 2 , wherein the concave portion into which the convex portion is fitted is provided in the spacer. A recess is provided at the shaft end of the rotating body,
Elevator drive machine coupling device according to claim 2, protrusion fitted into the recess, characterized in that provided in the spacer. 5. The elevator drive machine according to claim 1 , wherein the connecting member is a member that can expand and contract according to a distance between at least two of the rotating bodies. 6. Connecting device. A connecting device for an elevator driving machine that connects at least two elevator driving machines provided with a rotating body that lifts and lowers a weight with a car via a hoisting rope,
A connecting member for connecting motors respectively driving at least two of the elevator driving machines ;
The connecting device for an elevator drive machine according to claim 1 , wherein the connecting member is a terminal block . A connecting device for an elevator driving machine that connects at least two elevator driving machines provided with a rotating body that lifts and lowers a weight with a car via a hoisting rope,
A connecting member for connecting motors respectively driving at least two of the elevator driving machines ;
The connecting device for an elevator drive machine according to claim 1 , wherein the connecting member is a changeover switch .

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