JP4688461B2 - Elevator system - Google Patents

Description

  The present invention relates to an elevator system including an elevator machine room.

  In the past, almost all elevator systems were equipped with a machine room, but recently, from the viewpoint of effective use of the space in the building, a low-speed, small-capacity elevator is a machine roomless type that does not require a machine room. Things have become mainstream. On the other hand, as a high-speed and large-capacity elevator, a machine room installation type equipped with a machine room is still used. This machine room is provided on the top floor of the building as a dedicated installation space for elevator equipment, and a hoisting machine, a control panel, and the like are installed therein (see, for example, Patent Document 1).

  FIG. 8 is a configuration diagram of a conventional machine room installation type elevator system. AC power from the main power source 1 is input to the primary side of the isolation transformer 3 via the power receiving breaker 2, and AC power output from the secondary side of the isolation transformer 3 is input to the converter 5 via the harmonic suppression filter 4. It is designed to be entered. This AC power is converted to DC by the converter 5 and smoothed by the capacitor 6, and then converted again to AC by the inverter 7 and output to the hoisting machine 9. These converter 5 and inverter 7 are controlled by a controller 8.

  A main rope 10 is wound around the hoisting machine 9, and a car 11 and a counterweight 12 are attached to one end side and the other end side of the main rope 10, respectively. In addition, a compensation rope 14 is connected between the bottom of the car 11 and the bottom of the counterweight 12 via a compensation sheave 13.

  The hoisting machine 9 is installed in an elevator machine room. The insulating transformer 3 and the harmonic suppression filter 4 are housed in a transformer box 15 installed in the elevator machine room together with the control panel 16. Further, a power conversion device 29 including a converter 5, a capacitor 6, and an inverter 7 is also housed in the control panel 16 installed in the elevator machine room together with the controller 8.

  FIG. 9 is a plan view showing a device arrangement configuration in the machine room according to the elevator system of FIG. As shown in this figure, a machine room 18 is formed by a wall 17, and a hoisting machine 9 attached to a base 19 is installed in a substantially central part of the room. The hoisting machine 9 includes a motor 9a and a main sheave 9b and a secondary sheave 9c around which a main rope 10 is wound.

  Further, a door 20 is provided on a part of the wall 17, and a power receiving box 21, a control panel 16, an option panel 22, and a transformer box 15 are installed near the door 20. The power receiving box 21 stores the power receiving breaker 2, the control panel 16 stores the converter 5, the capacitor 6, the inverter 7, and the controller 8, and the option panel 22 has various functions (for example, landing function at power failure, group) Optional equipment for realizing a management function or the like is housed, and the transformer box 15 contains the insulating transformer 3 and the harmonic suppression filter 4.

Further, by ensuring that the dimensions L1, L2, and L3 around the base 19 are not less than a predetermined value (for example, 500 mm), it is possible to secure an inspection space for workers who perform inspection work in the machine room 18. Is obligatory.
JP 2001-58778 A

  Incidentally, in the equipment arrangement configuration in the machine room 18 shown in FIG. 9, the transformer box 15 is installed separately from the control panel 16, and the insulating transformer 3 is accommodated in the transformer box 15. This is due to the following reason.

  That is, firstly, the weight and size of the insulating transformer 3 are quite large (for example, about 300 kg), and if it is intended to be housed in the control panel 16, the members constituting the control panel 16 also have a considerable strength. In addition, a large size is required, and the overall size is considerably increased.

  Second, the isolation transformer 3 functions as a power source for the main circuit, and not only has a large capacity and size, but also has a large diameter connecting cable. More than one-third of the entire board space is occupied by the insulating transformer 3 and its wiring material. Therefore, in the case of an order-type elevator system with a variety of optional functions, more circuits and optional equipment must be added to the control panel 16, but the effective space is reduced due to the isolation transformer 3. become.

  Third, when the insulation transformer 3 is to be disposed in the control panel 16, the position of the insulation transformer 3 is the lower part of the control panel from the viewpoint of strength and earthquake resistance. Become. However, from the lower part of the control panel, various control signal lines connected to the elevator car and the hall are also drawn at the same time, but the signals flowing through the control signal lines may be affected by the connection cable and cause malfunction. is there.

  For the above reasons, the insulating transformer 3 is housed in a transformer box 15 provided separately from the control panel 16, and therefore any one of the dimensions L1, L2, L3 (see FIG. In the example shown in FIG. 9, L2) must be increased more than necessary, and it was difficult to reduce the entire area of the machine room.

  The present invention has been made in view of the above circumstances, and the area of the entire machine room can be reduced while ensuring the inspection space required by the relevant laws and regulations, and the effective use of the space in the building has been promoted recently. It is an object of the present invention to provide a machine room installation type elevator system that can meet the demands of the above.

As a means for solving the above-mentioned problems, the invention according to claim 1 is a control in which a hoisting machine attached to a base for raising and lowering an elevator car and a power converter for controlling the hoisting machine are housed. And an insulating transformer for supplying power from the main power supply to the power converter through a harmonic suppression filter , and the insulating transformer includes an elevator machine room housed in a transformer box. In the elevator system, the harmonic suppression filter is disposed in the control panel, and the base is configured by an upper frame member, a lower frame member, and a support column that connects both the frame members, and the winding An upper machine is attached to the upper surface side of the upper frame member, and the transformer box in which the insulating transformer is housed is connected to the upper frame member and the lower frame. Is disposed in a free space formed between the timber, characterized in that.

  According to a second aspect of the present invention, in the first aspect of the present invention, the first cable member connecting the primary side of the insulating transformer and the main power source side, and the secondary side of the insulating transformer and the power converter. A shield member is applied to the second cable member connecting the sides, and the influence of noise from the power converter is prevented from reaching the main power supply side via the second cable member and the first cable member. It is characterized by.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, a power receiving breaker interposed between the main power source and the insulating transformer is attached to the base.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, an energization indicator lamp for displaying an energization state to the primary side of the insulating transformer is attached to the base. Features.

  According to the present invention, since the insulation transformer is attached to the empty space of the base to which the hoisting machine is attached, the planar space in the machine room that is applied only to the insulation transformer, which has been conventionally required, is reduced. It is possible to reduce the area of the entire machine room while securing the inspection space required by related laws and regulations.

  FIGS. 1A and 1B are explanatory views showing a mounting structure of a transformer box 15 to a base 19, which is a main part of the first embodiment of the present invention. FIG. 1A is a plan view and FIG. 1B is a front view. . The base 19 includes an upper frame member 19a, a lower frame member 19b, and a support column 19c, and an empty space 19d is formed between the frame member 19a and the lower frame member 19b. The transformer box 15 in which the insulating transformer 3 is housed is attached to the frame member 19a by the mounting plate 23 and the bolt member 24, and the middle part and the lower end part below the upper end part are suspended in the empty space 19d. It is in the state that was.

  FIG. 2 is a configuration diagram of the elevator system of the present embodiment that employs the mounting structure of the transformer box 15 shown in FIG. 2 is different from FIG. 8 in that the harmonic suppression filter 4 is disposed in the control panel 16 instead of the transformer box 15. Thus, by arranging the harmonic suppression filter 4 in the control panel 16, the transformer box 15 can be reduced in size so that it can be easily attached to the empty space 19 d of the base 19.

  FIG. 3 is a plan view showing a device arrangement configuration in the machine room according to the elevator system of the present embodiment. 3 differs from FIG. 9 in that the transformer box 15 in which the insulating transformer 3 is housed is attached not to the option board 22 but to the base 19 and this reduces the dimension L2. It is a point. As described above, by arranging the transformer box 15 containing the insulating transformer 3 in the empty space 19d of the base 19, the dimensions L1, L2, and L3 for securing a predetermined inspection space can be obtained. The required minimum dimensions can be obtained, and the area of the machine room 18 can be made smaller than before.

  In the above embodiment, as shown in FIG. 1B, an example in which the transformer box 15 is attached to the upper frame member 19a is shown. However, the base in the state shown in FIG. The transformer box 15 can be attached to any position of the base 19 as long as it does not protrude from the space corresponding to the projected area of the base 19. For example, in FIG. 1B, the bottom surface of the transformer box 15 may be fixed to the upper surface of the upper frame member 19a, or the bottom surface of the transformer box 15 may be fixed to the lower frame member 19b. You may fix to this in the state mounted on the upper surface.

  FIG. 4 is a plan view showing a device arrangement configuration in the machine room according to the elevator system of the second embodiment of the present invention. FIG. 4 differs from FIG. 3 in that the primary side of the insulating transformer 3 and the power receiving breaker 2 (main power source side) in the power receiving box 21 are connected by the first cable member 25 and 2 of the insulating transformer 3. The secondary side and the harmonic suppression filter 4 (power converter side) in the control panel 16 are connected by the second cable member 26 (however, these cable members 25 and 26 are not shown in FIG. 3). In fact, it was used as a matter of course.) Further, a shield member 27 is provided on the cable members 25 and 26.

  The power conversion device 29 housed in the control panel 16 is a high-frequency generator, and may have an influence on noise due to harmonics or the like. On the other hand, since the location of the transformer box 15 containing the insulating transformer 3 is the base 19, the cable members 25 and 26 are laid in parallel or bundled together. Therefore, noise generated on the power conversion device 29 side is guided from the second cable member 26 side to the first cable member 25 side and propagated to the main power source 1, and further from the main power source 1 to other equipment in the building. There is a risk of adverse effects.

  However, according to the present embodiment, since the induction of noise from the second cable member 26 to the first cable member 25 is blocked by the shield member 27, the noise from the power converter 29 passes through the main power supply 1. Can be prevented from adversely affecting other devices. In the present embodiment, it is assumed that the shield member 27 is formed of a metal duct. However, a configuration in which shield wires are used for the cable members 25 and 26 themselves may be employed.

  FIG. 5 is a front view showing the mounting structure of the transformer box 15 with respect to the base 19 which is the main part of the third embodiment of the present invention. 5 is different from FIG. 1B in that a power receiving box 21 in which the power receiving breaker 2 is housed is attached to the upper surface of the upper frame member 19a constituting the base 19.

  In the first and second embodiments, as shown in FIGS. 3 and 4, the power receiving box 21 is disposed at a position adjacent to the control panel 16. However, since this position is away from the hoisting machine 9, when an abnormality occurs during an inspection operation of the hoisting machine 9 and it is necessary to turn off the power immediately, the time to turn off the power correspondingly is required. It will take extra. Therefore, in the third embodiment, as described above, the power receiving box 21 is attached to the base 19 side so that the worker who is inspecting can quickly shut off the power supply, so that work safety is ensured. Improves sex.

  3 and 4, the narrow machine room is further narrowed by the amount of the power receiving box 21 disposed at the position adjacent to the control panel 16. In particular, in an elevator system that operates a plurality of elevator cars, the number of power receiving boxes 21 required is the same as the number of operating units, and thus the space occupied by the power receiving boxes 21 is never negligible. However, in the configuration of FIG. 5, since the power receiving box 21 is attached to the upper surface of the upper frame member 19a, the planar space is the same as when the power receiving box 21 is not attached, and the planar space is further increased. It can be expanded.

  FIG. 6 is a configuration diagram of an elevator system according to the fourth embodiment, and FIG. 7 is a front view showing a mounting structure of the transformer box 15 to the base 19 of this embodiment. 6 and 7 differ from FIGS. 2 and 5 only in that an energization indicator lamp 28 is added.

  As is clear from the configuration diagram of FIG. 6, the voltage from the main power supply 1 is applied to the primary side of the insulating transformer 3 unless the power receiving breaker 2 is turned off. Therefore, if an operator mistakes the state in which the power receiving breaker 2 is turned on during the inspection work as the off state, the operator may touch the terminal of the insulating transformer 3 with his bare hands, possibly causing an electric shock accident. However, in this embodiment, since the worker can confirm the on / off state of the power receiving breaker 2 at a glance with the power indicator 28, the occurrence of an electric shock accident can be prevented and safety can be improved. . Then, as shown in FIG. 7, the energization indicator lamp 28 is attached to the upper surface of the upper frame member 19a as in the case of the power receiving box 21. There is no expansion.

  By the way, in each embodiment described above, since the transformer box 15 and the power receiving box 21 are configured to be attached to the base 19, the merit that the carrying-in work and the assembling work at the site can be easily performed. Obtainable. That is, conventionally, as shown in FIG. 9, the transformer box 15 and the power receiving box 21 are arranged at positions away from the base 19, so that these are the base 19 and the hoisting machine 9. In the same way as above, the cranes were individually lifted to the machine room and individually installed. For this reason, the number of times of lifting by the crane has increased, and the labor required for the installation work has become large.

  However, in the above embodiment, since the transformer box 15 and the power receiving box 21 can be integrally attached to the base 19 together with the hoisting machine 9 at the time of factory shipment of the elevator maker, the crane box can be integrated into the machine room. Can be lifted and transported. Therefore, according to the configuration of the above-described embodiment, in addition to the effect that the area of the entire machine room can be reduced while securing the inspection space required by related laws and regulations, the transfer work from the factory to the site, the site It is also possible to obtain an effect that the labor required for installation and assembly work can be reduced.

It is explanatory drawing which shows the attachment structure of the transformer box 15 with respect to the base 19 which is the principal part of the 1st Embodiment of this invention, (a) is a top view, (b) is a front view. The block diagram of the elevator system of this embodiment which employ | adopted the attachment structure of the transformer box 15 shown in FIG. The top view which showed the equipment arrangement configuration of the machine room inside which concerns on the elevator system of the said 1st Embodiment. The top view which showed the apparatus arrangement configuration of the machine interior which concerns on the elevator system of the 2nd Embodiment of this invention. The front view which shows the attachment structure of the transformer box 15 with respect to the base 19 which is the principal part of the 3rd Embodiment of this invention. The block diagram of the elevator system which concerns on the 4th Embodiment of this invention. The front view which shows the attachment structure of the transformer box 15 with respect to the base 19 of the said 4th Embodiment. The block diagram of the conventional machine room installation type elevator system. The top view which showed the equipment arrangement structure of the machine room inside which concerns on the elevator system of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main power supply 2 Power receiving breaker 3 Insulation transformer 4 Harmonic suppression filter 5 Converter 6 Capacitor 7 Inverter 8 Controller 9 Hoisting machine 9a Motor 9b Main sheave 9c Secondary sheave 10 Main rope 11 Car 12 Counterweight 13 Compensation 14 Compensation rope 15 Transformer Box 16 Control panel 17 Wall 18 Machine room 19 Base 19a Frame member 19b Frame member 19c Support column 19d Empty space 20 Door 21 Power receiving box 22 Option panel 23 Mounting plate 24 Bolt member 25 First cable member 26 Second cable member 27 Shield member 28 Energization indicator lamp 29 Power conversion device

Claims (4)

Harmonic and hoisting machine, a control panel power converter is accommodated for controlling the hoist, the power supply from the main power supply to the power conversion device that performs an elevating operation of the elevator car is attached to the base In an elevator system including an elevator machine room that is installed in the transformer box, and an insulation transformer that performs through a wave suppression filter is installed.
While arranging the harmonic suppression filter in the control panel,
The base is composed of an upper frame member, a lower frame member, and a support column that connects both the frame members,
The hoisting machine is attached to the upper surface side of the upper frame member,
The transformer box in which the insulating transformer is housed is disposed in an empty space formed between the upper frame member and the lower frame member.
An elevator system characterized by that. A shield member is applied to a first cable member connecting the primary side of the insulating transformer and the main power supply side, and a second cable member connecting the secondary side of the insulating transformer and the power converter side, The influence of noise from the power converter is prevented from reaching the main power supply side through the second cable member and the first cable member.
The elevator system according to claim 1. A power receiving breaker interposed between the main power source and the insulating transformer is attached to the base,
The elevator system according to claim 1 or 2, characterized in that. An energization indicator lamp for displaying an energization state to the primary side of the insulation transformer is attached to the base.
The elevator system according to any one of claims 1 to 3.

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