JP4566639B2 - Elevator control device - Google Patents

Description

  The present invention relates to a control device for a large elevator installed in a machine room in order to run an elevator car at a high speed.

  2. Description of the Related Art In recent years, large-sized elevator control devices have been used to drive an elevator car at high speed as the number of buildings rises. This elevator control device uses a high load capacity motor, such as 45 KW, to hang up and down the main car with a main rope, and is installed in the machine room above the hoistway together with this high load capacity motor. ing.

  As shown in FIG. 5, a three-phase AC power source 1, a contactor 2, a power source filter 3 for removing harmonic noise, and a three-phase AC power, as shown in FIG. Converter 4 for converting to predetermined DC power, smoothing capacitor 5 for smoothing by removing ripples contained in DC power converted by this converter 4, and inverter for converting this smoothed DC power to predetermined AC power 6 and the reactor 7, these components 2-7 are each provided for three phases. A control circuit 8 is provided to control the converter 4 and the inverter 6.

  In the figure, 9 is an electric motor with a high load capacity of 45 KW, for example, 10 is a hoisting machine, 11 is a main rope, 12 is a passenger car, and 13 is a counterweight.

  By the way, as shown in FIG. 6, conventionally, an elevator control device for high-speed travel is provided with front doors 17L and 17R that are opened frontward (open doors) to the device housing 16 of the control device. A back plate 19 is attached to the back side of the back plate 19 with screws 18 so as to be removable at the time of inspection or the like.

  Accordingly, such a control device is configured to perform installation / connection work, inspection, operation, and replacement work of the components 2 to 7 from either the front side or the back side of the casing 16. That is, the components 2 to 7 are arranged so as to work easily from the front side and the back side of the housing 16.

  The above-mentioned installation connection work includes, for example, a power line lead-in connection work of the three-phase AC power supply 1, a tail cord pull-in work, a power filter 3 connection work, a wiring work to the motor 9, and a wiring connection for each floor display Etc. The inspection is, for example, an operation that is controlled by using a control circuit 8 such as a microcomputer at a console, collects various data, and determines whether the elevator is properly operating. The operation includes an adjustment operation of the converter 4 and the inverter 6, a speed adjustment between the load detection signal of the load detector for detecting the load of the car 12 and the traveling speed of the car 12, and various other operations.

  Further, it is general that the apparatus housing 16 is housed separately in an elevator control panel 20 having supplies related to elevator control and a filter panel 21 having a power supply filter 3, a reactor 7, and the like. The reason why the filter panel 21 is housed in a state separated from the elevator control panel 20 is that the power supply filter 3 and the reactor 7 are larger than ordinary articles. Incidentally, as shown in FIG. 7, in the power supply filter 3, two reactors 3L1 and 3L2 are connected in series, and a series circuit of a resistor 3R and a capacitor 3C is connected between the two reactors 3L1 and 3L2, and inserted between the respective phases. Has been. The power supply filter 3 has an outer shape with a width of 60 cm × 60 cm × height of 1.7 m and has three phases. As a result, the total weight of the power filters 3 for these three phases is 300 to 400 kg, which is high.

  Furthermore, as a technology related to the layout of the equipment installed in the machine room, the hoisting machine installed in the machine room is located near the hoistway wall, thereby securing the maintenance space for equipment such as the control panel. An elevator has been proposed (Patent Document 1).

(Patent Document 1)
JP 2001-31349 A

  However, the elevator control device as described above is configured to allow installation work, inspection, operation, and replacement work of the product from either the front side or the back side of the housing 16 of the control device. The following problems have been pointed out.

(1) In a large elevator for high speed travel, each component is not only large, but each component 2-7 is focused on the ease of work related to installation, inspection, operation and replacement of each component. Therefore, the housing 16 tends to increase in size.

(2) Since the front side and the rear side of the casing 16 that houses the components 2 to 7 can be opened and closed, the casing 16 is not only for the front side of the casing 16 but also for inspection, operation, etc. There is also a problem that an inspection space equivalent to that on the front side is required on the rear side of the machine, and the installation area of the control device in the machine room becomes large.

(3) Furthermore, since the filter panel 21 such as the power supply filter 3 and the reactor 7 is large and heavy as described above, it is necessary to dispose the filter panel 21 separately from the elevator control panel 20. This is an obstacle that makes it impossible to downsize the device casing 16 of the device.

  The present invention has been made in view of the circumstances as described above, and an object of the present invention is to provide an elevator control device that significantly reduces the inspection space and installation area of an apparatus housing installed in a machine room.

In order to solve the above problems, the present invention provides an AC / DC conversion circuit that converts AC power supplied from a three-phase AC power source through a power supply filter into DC power, and DC power converted by the conversion circuit is a predetermined amount. An inverter for converting into AC power, and at least a control circuit for controlling the inverter so as to output predetermined AC power from the inverter, and supplying the AC power converted by the inverter to the motor via a reactor. in the control device of a large elevator installed in the machine room of the hoistway portion to high-speed running of the elevator car,
As the electric motor, using a permanent magnet synchronous motor made of a winding of a material having a large reactance value, the reactor is not required,
Said control mounting the front door to open before only the front side of the apparatus housing of the apparatus only, the power supply filter in the apparatus casing constituting the control apparatus, the AC-DC converter, the inverter, the control circuit Etc., and among the supplies such as a plurality of reactances, resistors and capacitors of each phase constituting the power filter, one reactance of each phase is separated and installed at an appropriate place outside the casing Then, the remaining supplies of the power supply filter are stored in the device casing.

Further, the present invention is a new to the above components, in the housing of the rearwardly at a predetermined distance from the front door, one end side is rotatably supported, and folded closer intermediate portion from the shaft support component A return panel that is removably supported is attached to a support member that is formed so as to be rotatable and has a second end projecting in the housing surface facing the shaft support portion in the housing. And an elevator control device in which the article related to inspection is arranged and a wiring terminal block is arranged on a lower side in the housing.

  According to the present invention, work such as inspection and operation can be performed from the front side of the casing, and space for inspection on the rear side of the casing of the control device in the machine room can be omitted by rational arrangement of components. In addition, the installation area can be greatly reduced. Moreover, the installation area of the housing can be reduced more and more by arranging the power filter components separately.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a top view of the apparatus housing, and FIG. 2 is a view showing an example of the arrangement of the articles constituting the control apparatus.

  First, it is needless to say that the elevator control device according to the present invention is not limited to the control device having the configuration shown in FIG. 5 and can be applied to control devices having various configurations. Here, for convenience of explanation, an example applied to the control device having the configuration shown in FIG. 5 will be described. Accordingly, the same components as those in FIG. 5 will be described using the same reference numerals.

  As the electric motor 9 that is driven and controlled by the control device, a permanent magnet synchronous motor that employs a winding made of a material having a large reactance L value is used. The electric motor 9 can be reduced in size and weight by using a permanent magnet having a high magnetic flux density. Further, as described above, by using a winding made of a material having a large reactance L value, the reactor 7 conventionally connected to the input side of the electric motor 9 is omitted.

  In this elevator control device, a device housing 21 of a control device for controlling the operation of the elevator car 12 is installed in a machine room above the hoistway, and the inside of the device housing 21 is divided into partition plates 22 as necessary. Is divided into two regions on the left and right.

  The rear surface side of the device housing 21 is covered with a rear plate 23 that is integrally formed so that at least the corner portion is screwed or cannot be removed. For this reason, the rear side of the casing 21 is opened and inspection, operation, etc. cannot be performed.

  On the other hand, front doors 24L and 24R with double doors are attached to the front side of the device housing 21. The front door 24L is pivotally supported so as to be rotatable in the vertical direction of the left edge of the housing 21 in the paper surface direction. The front door 24R is pivotally supported so as to be rotatable in the vertical direction of the right edge portion of the casing 21. Each of the front doors 24L and 24R may be configured to be pivotally supported by the middle partition plate 22 portion, or may be an intermediate partition between one of the left and right ends of the housing 21 and the middle partition. The plate 22 may have a rotatable shaft support mechanism portion. Furthermore, a return panel 25 is attached to the partition plate 22 in the casing in a direction away from the front door 24R that opens and closes the right side area of the two areas in the casing 21.

  In other words, the return panel 25 is formed such that one end portion is pivotally supported by the partition plate 22 and an intermediate portion relatively close to the partition plate 22 side can be bent and rotated. The return panel 25 is usually screwed, for example, to a support member 26 that protrudes on the inner side of the right side plate of the housing 21 at the end opposite to the shaft support side of the left end in the figure. The return panel 25 can be pulled out to the outside on the front side of the housing 21 using a shaft support mechanism at the left end of the panel 25 and a bending mechanism at the middle part of the panel 25 after removing the screws as necessary. ing.

  The inside of the device housing 21 is divided into left and right regions by a partition plate 22, but as shown in FIG. 2, on the lower side of the right region with the partition plate 22 in between, control of transistors and rectifiers related to the control power supply A breaker 32 is attached to the right side of the power supply circuit 31 and the middle stage in the figure. Further, on one side or both sides of the return panel 25 is a first control circuit 33 including a microcomputer board such as a control circuit 8 used during inspection and operation, motor brake control and other relays that require visual confirmation during inspection. A second control circuit 34 such as is attached. The return panel 25 may have a configuration in which the first control circuit 33 and the second control circuit 34 are separately attached so as to be rotatable in consideration of the deflection due to the weight of the article. Reference numeral 35 denotes a base for raising the floor.

  On the other hand, on the lower side of the left side region of the device housing 21, a power supply circuit 37 comprising a part of the constituent elements such as the contactor 2, the wiring terminal block 36 and the large power filter 3 having a relatively large weight is installed. Has been. That is, the power supply filter 3 constituting the motive power supply circuit 37 is composed of reactors 3L1, 3L2, a resistor 3R, a capacitor 3C, and the like as shown in FIG. 3L2,... Are separated from the reactor 3L1 side and installed at an appropriate installation location, for example, an installation base (not shown) of the electric motor 9, and the reactors for the three phases that are constituent elements of the remaining power filter 3 excluding the reactor 3L2 Since 3L1, resistor 3R and capacitor 3C are large in weight and generally do not require inspection or the like, they are housed as a power supply circuit 37 on the lower side of the right region of the device housing 21.

  In addition, stacks 38 and 39 such as an inverter 6 and a converter 4 are arranged on the middle side and the upper side of the left region of the device housing 21. Reference numeral 40 denotes a cooling fan, and 41 denotes a floor raising base.

  The operation of installing the elevator control apparatus having the above-described configuration in the machine room will be described.

  In general, installation connection work such as connection of the power line of the three-phase AC power source 1, connection of the tail cord, connection of the power filter 3, connection to the motor 9, wiring connection of each floor display, etc. An opening for drawing is formed on the lower side of the body 21 and the side surface of the device casing 21, and necessary wiring is drawn or pulled out using the opening, and the return panel is opened from the front side of the device casing 21. If 25 is pulled out, wiring connection work can be performed without opening the back plate 23 and working. When the apparatus housing 21 is first installed, it is free to open the back plate 23 to perform installation work, or to pull in or draw out the wiring through an opening formed in the back plate 23, for example. However, in the present invention, after the apparatus casing 21 is installed in the machine room, the back plate 23 is completely closed, so that it will not be opened or closed for inspection or operation thereafter. In the inspection and operation, if the return panel 25 is pulled out from the front side of the device casing 21, supplies necessary for inspection and operation can be taken out and necessary work can be performed from the front side of the casing. it can.

  Therefore, according to the embodiment as described above, the return panel 25 is rotatably disposed on the front side of the device casing 21 on the front side of the double door, for example, on the rear side of the 24R, and the return panel 25 can be operated and operated. By installing the equipment related to the inspection and providing the wiring terminal block 36 on the power supply circuit 37 side in the left side of the figure, installation, inspection, It is possible to perform operations. As a result, there is no need to remove the back plate 23 and perform inspections as in the prior art, and the inspection space can be greatly reduced. In general, the machine room of the hoistway has many narrow places, but the inspection space can be greatly reduced, and the space can be effectively used. In addition, a return panel 25 is attached to the rear part of the front door 24R, and articles related to inspection and operation can be rationally arranged on the return panel 25, which greatly contributes to downsizing of the housing occupation area.

  Further, among the relatively large reactors 3L1, 3L2, which are constituent elements of the power supply filter 3, the reactors for any one of the three phases, for example, 3L2,... Are separated from the reactors 3L1 for each phase, and installed at appropriate places. Further, by omitting the reactor 7 connected to the input side of the electric motor 9, the remaining components of the power supply filter 3 are incorporated into the casing 21 corresponding to the elevator control panel shown in FIG. The body 21 can be greatly reduced.

  Incidentally, in the apparatus housing 16 having the area corresponding to the conventional elevator control panel 20 and the area corresponding to the filter panel 21, the width including the inspection space on the front side and the rear side as shown in FIG. In the case of the device housing 21 having an area equivalent to the elevator control panel 20 according to the present invention, which occupies an area of 1300 mm × depth 2100 mm, the power supply filter 3 is incorporated, as shown in FIG. Thus, it can be reduced to an occupied area of width 900 mm × depth 850 mm. The height of the conventional device casing 16 is 1750 mm, and the height of the device casing 21 according to the present invention is 1800 mm. As a result, the apparatus housing 21 can be reduced by 40% compared to the conventional case, and when the occupied area including the inspection space is considered, it can be reduced by 64%.

  Further, if necessary articles are arranged on both sides of the return panel 25, the articles can be arranged more rationally, and the installation area of the housing 21 can be reduced. Furthermore, if the return panel 25 has a configuration in which the product is arranged by being divided into a plurality of parts in the vertical direction, it is possible to suppress the influence of the deflection due to the weight of the product.

  In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, various deformation | transformation can be implemented. Moreover, each embodiment can be implemented in combination, and in that case, the effect of the combination can be obtained.

The top view which shows the control apparatus of the elevator which concerns on this invention. The arrangement example of the article in the control device of the elevator concerning the present invention. The figure explaining separating and installing a part of power supply filter which comprises a part of control apparatus of an elevator. The comparison figure of the occupation area of an apparatus housing | casing including the inspection of the control apparatus by this invention, and the conventional control apparatus. The figure which shows the structure of a general control apparatus. The top view of the apparatus housing | casing of the conventional elevator control apparatus. The block diagram of the power source filter which comprises some conventional elevator control apparatuses.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Three-phase alternating current power supply, 2 ... Contactor, 3 ... Power supply filter, 4 ... Converter, 5 ... Smoothing capacitor, 6 ... Inverter, 7 ... Reactor, 8 ... Control circuit, 9 ... High load capacity motor, 10 ... Hoisting Machine, 12 ... car, 13 ... counterweight, 21 ... device housing, 22 ... partition plate,
23 ... Back plate, 24L, 24R ... Front door, 25 ... Return panel, 26 ... Panel support member, 37 ... Power supply circuit.

Claims (2)

From an AC / DC converter circuit that converts AC power supplied from a three-phase AC power source through a power filter into DC power, an inverter that converts DC power converted by the converter circuit into predetermined AC power, and at least from the inverter A control circuit that controls the inverter to output predetermined AC power, supplies AC power converted by the inverter to the electric motor via a reactor, and operates on a hoistway to run the elevator car at high speed. the control device for large elevators installed in the machine room of the parts,
As the electric motor, using a permanent magnet synchronous motor made of a winding of a material having a large reactance value, the reactor is not required,
Said control mounting the front door to open before only the front side of the apparatus housing of the apparatus only, the power supply filter in the apparatus casing constituting the control apparatus, the AC-DC converter, the inverter, the control circuit And the like, and among the supplies such as a plurality of reactances, resistors, and capacitors of each phase constituting the power filter, one reactance of each phase is separated and installed at an appropriate place outside the casing And the remaining articles of the power supply filter are accommodated in the apparatus casing. In the elevator control device according to claim 1,
One end side is pivotally supported in the housing behind the front door at a predetermined distance , and an intermediate portion close to the pivotal support portion is formed so that it can be bent and rotated, and the other end side is in the housing. A return panel that is removably supported is attached to a support member that protrudes in the housing surface facing the shaft support portion, and the article related to operation and inspection is disposed on the return panel, and the housing A control apparatus for an elevator, wherein a wiring terminal block is arranged on the lower side of the body.

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