JP5165256B2 - Drive control device for electric chain block with electric trolley - Google Patents

Description

  The present invention relates to a drive control device for an electric chain block with an electric trolley, and in particular, a power source unit includes a commercial power source and one inverter, and any one of a traverse motor of the electric trolley or an elevator motor of the electric chain block is driven by an inverter. The present invention also relates to a drive control device for an electric chain block with an electric trolley in which the other is driven by a commercial power source.

  Driving an electric chain block with an electric trolley that has a commercial power supply and an inverter, and that either one of the traversing motor of the electric trolley of the electric chain block with electric trolley or the lifting motor of the electric chain block is driven by an inverter and the other is driven by a commercial power supply A control device is known from US Pat.

  FIG. 1 is a diagram showing a system configuration of a drive control device for an electric chain block with an electric trolley described in Patent Document 1. As shown in FIG. As shown in the figure, the drive control device for an electric chain block with an electric trolley includes a commercial power supply 100 and an inverter 101 in a power supply unit, and the electric power of the commercial power supply 100 is raised and lowered via an electromagnetic switch 102. The electric motor 103 is supplied. Reference numerals 104 and 105 denote a forward rotation (for hoisting) electromagnetic switch and a reverse rotation (for lowering) electromagnetic switch that connect between the lifting motor 103 and the electromagnetic switch 102. The lifting motor 103 is connected to the inverter 101 via an electromagnetic switch 106, and the traversing motor 107 of the electric trolley is connected to the inverter 101 via an electromagnetic switch 108.

Operation circuit, the main circuit power-on circuit I, the operation mode (islanding operation, simultaneous operation) switch circuit II, the hoisting circuit III, the winding under circuit IV, before proceeding travel circuit V, reverse travel circuit VI, elevator motor power-on circuit VII, running timer circuit VIII, etc. are provided. The circuit I is operated by operating pushbutton switches of “ON”, “OFF”, “Same”, “Single”, “Up”, “Down”, “East”, “West” of the operation box 110 having the configuration shown in FIG. VIII to VIII are turned on / off by turning on / off the electromagnetic switch 102, the simultaneous operation of the lifting motor 103 and the traversing motor 107, single operation, and the lifting motor from the inverter 101 by turning on / off the electromagnetic switch 106 Supply / interruption of electric power of 103, supply / interruption of electric power from the inverter 101 to the lifting motor 103 by ON / OFF of the forward (winding) electromagnetic switch 104 or the reverse (lowering) electromagnetic switch 105, When the electromagnetic switch 108 is turned on / off, the electric chain block is lifted / lowered by forward / reverse rotation of the lifting / lowering motor 103 by supplying / cutting off electric power from the inverter 101 to the traverse motor 107. A descending operation, simultaneous operation of front / reverse of the electric trolley or independent operation are performed.

1 and 2, R is a relay, Ra is a normally open contact of the relay R, Rb is a normally closed contact of the relay R, TR is a timer relay, Tb is a normally closed contact of the timer relay TR, VR is a variable resistor for speed adjustment. In addition, 102m is a drive coil of the electromagnetic switch 102, 104m is a drive coil of the forward (for hoisting) electromagnetic switch 104, 105 is a drive coil of the reverse (for lowering) electromagnetic switch 105, and 106m is an electromagnetic switch. A drive coil 108 m of the switch 106 is a drive coil of the electromagnetic switch 108.
JP-A-61-94999

  As shown in FIG. 1, in an electric chain block with an electric trolley equipped with a commercial power supply 100 and an inverter 101, forward / backward movement of the electric trolley by forward / reverse rotation of the traverse motor 107 and forward / reverse rotation of the lifting / lowering electric motor 103 Since the hoisting / lowering of the electric chain block, independent operation, and simultaneous operation are performed by operating the “same” and “single” push button switches of the operation box 110, there is a problem that it takes time to switch the push button switches. is there. Further, when the lifting motor 103 is driven by the inverter 101, there is a problem that the traversing motor 107 of the electric trolley cannot be operated simultaneously.

  As will be described later, six electromagnetic switches are used in the drive circuit sharing one inverter. These electromagnetic switches are used for the electric motor for traversing the electric trolley and the electric chain block. Since the size is determined according to the capacity of the lifting motor, there is a problem that it is difficult to reduce the size of the apparatus and the cost is increased.

  The present invention has been made in view of the above points, and it is easy to operate the electric chain block ascending / descending motor and the electric trolley's traversing motor independently or simultaneously, and the ascending / descending motor or traversing motor is an inverter drive. It is an object of the present invention to provide a drive control device for an electric chain block with an electric trolley that can drive an elevating motor or a traversing electric motor at the same time, and further reduce the size of the apparatus by using an electromagnetic switch with a small capacity.

The invention according to claim 1 for solving the above problems, a commercial power supply and includes a single inverter, the switching power of the commercial power supply for normal and reverse rotation forward-reverse switching electromagnetic switch to the power supply unit, wherein a first electromagnetic switch for connecting the transverse electric motor of the inverter and the electric trolley, and the second electromagnetic switch to connect the lift motor of the inverter and the electric chain block, and the forward-reverse switching electromagnetic switch rampant a third electromagnetic switch for connecting the use motor, by the includes a forward-reverse switching electromagnetic switch and a fourth electromagnetic switch for connecting said lift motor, the operation of the transverse switch and lifting the switch operating box, the An inverter drive for supplying electric power from the commercial power source to the traverse motor or the lifting motor from the commercial power source via the inverter, or a forward / reverse switching electromagnetic switch from the commercial power source. A drive control device for an electric chain block with an electric trolley configured to be supplied as a commercial power supply, wherein the drive of the traverse motor or the lift motor is operated in advance of the operation box A control means is provided in which a switch is driven by an inverter and a switch operated next is driven by a commercial power supply.

  According to a second aspect of the present invention, in the electric chain block drive control device with an electric trolley according to the first aspect, the control means prevents the forward / reverse switching electromagnetic switch from being opened for a predetermined period of time once closed. It is characterized by doing.

  According to a third aspect of the present invention, in the drive control device for an electric chain block with an electric trolley according to the first or second aspect, the control means is configured to start the first when the traversing electric motor or the lifting electric motor is activated. Or after closing the fourth electromagnetic switch, the inverter is started or the forward / reverse switching electromagnetic switch is closed, and when the traverse motor or the lifting motor is stopped, the inverter is stopped or the forward / reverse switching The first to fourth electromagnetic switches are opened after the electromagnetic switch is opened.

  According to the first aspect of the present invention, the drive of the traversing motor or the lifting motor is driven by the inverter that is operated in advance of the operation box, and the inverter that is operated next is driven by the commercial power source. Therefore, the operation by the preceding operation switch is automatically driven by the inverter, so that the operation becomes very simple. Further, even if the traversing motor or the lifting motor is driven by an inverter, the lifting motor or the traversing motor can be simultaneously operated by a commercial power source drive.

  According to the second aspect of the present invention, the control means prevents the forward / reverse switching electromagnetic switch from being moved up and down by preventing the forward / reverse switching electromagnetic switch from being opened for a predetermined period of time once the forward / reverse switching electromagnetic switch is closed. Since the large current at the time of starting the traverse motor is not cut off, the forward / reverse switching electromagnetic switch having a small capacity, that is, having a small size can be used, and the apparatus can be miniaturized.

  According to the third aspect of the invention, the control means closes the first to fourth electromagnetic switches when starting the traverse motor or the lifting motor, and then starts the inverter or switches the forward / reverse switching electromagnetic switch. Is closed, and when the traversing motor or the lifting motor is stopped, the inverter is stopped or the forward / reverse switching electromagnetic switch is opened, and then the first to fourth electromagnetic switches are opened. Since only energizing the current does not cut off the current, the first to fourth electromagnetic switches can be used with a small capacity, the device can be miniaturized and at the same time the contact consumption is small, Its lifespan is also increased.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a diagram showing a configuration example of a power circuit of a drive control device for an electric chain block with an electric trolley according to the present invention. As shown in FIG. 3, the power supply unit includes a three-phase AC commercial power supply 10 and one inverter 12. Reference numeral 11 denotes an electromagnetic switch for turning on the power. By turning the electromagnetic switch 11 on and off, three-phase (R, S, T) AC power is turned on and off from the commercial power supply 10 to the drive control device. It is like that. 13 is a reverse electromagnetic switch for supplying reverse three-phase power to a traverse motor 19 of an electric trolley (not shown) and an elevator motor 20 of an electric chain block (not shown). It is an electromagnetic switch for normal rotation for supplying three-phase electric power for normal rotation. The reverse electromagnetic switch 13 and the forward electromagnetic switch 14 constitute a forward / reverse switching electromagnetic switch.

  Reference numeral 15 denotes a first electromagnetic switch for connecting the output side of the inverter 12 and the traversing electric motor 19 of the electric trolley. Reference numeral 16 denotes a second electromagnetic switch for connecting the output side of the inverter 12 to the electric motor 20 for raising and lowering the electric chain block. A switch 17 is a third electromagnetic switch for connecting a forward / reverse switching electromagnetic switch comprising the reverse rotation electromagnetic switch 13 and the forward rotation electromagnetic switch 14 and a traverse motor 19, and 18 is for forward / reverse switching. This is a fourth electromagnetic switch for connecting the electromagnetic switch and the lifting motor 20.

  FIG. 4 is a diagram illustrating a configuration example of a control unit of the drive control device of the electric chain block with the electric trolley according to the present invention. Reference numeral 21 denotes a controller. The controller 21 has a push button switch BS1 (upper) for instructing the electric chain block to be raised, a push button switch BS2 (lower) for instructing lowering, and a push button switch BS3 (high ) Is connected. Further, a push button switch BS4 (east) for instructing forward travel to the electric trolley, a push button switch BS5 (west) for instructing reverse travel, and a push button switch BS6 (high) for instructing high speed travel are connected. BS7 is an emergency stop push button switch, and the push button switches BS1 to BS6 are connected in parallel through the drive coil 11m of the electromagnetic switch 11 for turning on the power from the AC power source 22 and the emergency stop push button switch BS7. It is connected. Note that the external configuration of the operation box including the push button switches BS1 to BS7 is substantially the same as that in FIG. 2, and therefore illustration is omitted (however, there is no “same” or “single” push button switch).

  In addition, the controller 21 is connected to the drive coil 13m of the reverse electromagnetic switch 13 through the AC power source 22, the drive coil 14m of the forward electromagnetic switch 14, the drive coil 15m of the first electromagnetic switch 15, and the second electromagnetic switch 16. The drive coil 16m, the drive coil 17m of the third electromagnetic switch 17, and the drive coil 18m of the fourth electromagnetic switch 18 are connected.

  By operating the pushbutton switches BS1 to BS4, the pushbutton switches that are operated in advance by the forward / backward movement of the traverse motor 19 of the electric trolley and the up / down movement of the electric motor 20 for raising / lowering the electric chain block. Based on the output of the inverter 12, that is, the inverter is driven, and during the inverter driving, the operation related to the push button switch operated next is set to the power of the commercial power source 10, that is, the commercial power source is driven.

  FIG. 5 is a diagram showing the relationship between the push button switch operation, the traversing operation of the electric trolley, and the raising / lowering operation of the electric chain block. In FIG. 5, (1) is a single operation of the electric trolley or the electric chain block, (2) is a simultaneous operation of the electric trolley and the electric chain block, and (3) is a simultaneous operation of the electric trolley and the electric chain block. Each of the cases where the preceding operations are switched is shown.

  In the case of the single operation of (1), the traversing electric motor 19 of the electric trolley and the electric motor 20 for raising and lowering the electric chain block are driven by the output of the inverter 12 (inverter driving) by operating the push button switch, and move forward / backward (east・ Ramp in the west direction. In FIG. 5, by operating the push button switch BS1 or BS2, the traversing electric motor 19 of the electric trolley is driven by an inverter and traverses in the forward / backward (east / west) direction. Further, by operating the push button switch BS4 or BS5, the electric motor 20 for raising and lowering the electric chain block is driven by an inverter and moves up and down.

  In the case of the simultaneous operation of (2), the previously operated push button switch is driven by the output of the inverter 12 (inverter drive), and the push button switch of the next operation is driven by the commercial power source (commercial power drive). In FIG. 5, the traverse motor 19 is driven by an inverter by a preceding operation of the push button switch BS1 or BS2, and the elevator motor 20 is driven by a commercial power source by the next operation of the push button switch BS4 or BS5.

  When the preceding operation is switched by the simultaneous operation of (3), the next operation when the preceding operation is interrupted among the simultaneously operated push button switches is not shifted to the inverter driving, and the commercial power supply driving is maintained. In FIG. 5, the traverse motor 19 is driven by an inverter by a preceding operation of the push button switch BS1 or BS2, and the elevator motor 20 is driven by a commercial power source by the next operation of the push button switch BS4 or BS5. Even if the operation of the push button switch BS1 or BS2 is cut off, the commercial power supply drive of the elevating motor 20 is continued, and when the push button switch BS1 or BS2 is operated in the middle, the traverse motor 19 is driven by an inverter.

  FIG. 6 is a diagram showing the relationship between the push button switch and the electromagnetic switch. When the push button switch BS4 (east) for instructing the electric trolley to travel forward is operated in advance, the controller 21 energizes the drive coil 15m of the first electromagnetic switch 15 to supply an exciting current, and the first electromagnetic switch 15 Is turned ON, and the normal rotation signal S1 is output to the inverter 12, the electric power for normal rotation is supplied from the inverter 12 to the traverse motor 19 of the electric trolley, the traverse electric motor 19 rotates forward, and the electric trolley travels forward. . Further, when the push button switch BS5 (west) for instructing the backward traveling to the electric trolley is operated in advance, the controller 21 energizes the drive coil 15m of the first electromagnetic switch 15 to supply the first electromagnetic switch. The inverter 15 is turned ON, the reverse rotation signal S2 is output to the inverter 12, the electric power for reverse rotation is supplied from the inverter 12 to the traverse motor 19 of the electric trolley, the traverse motor 19 reverses, and the electric trolley travels backward. .

  In addition, when the push button switch BS1 (upper) for instructing ascent to the raising / lowering electric motor 20 of the electric chain block is operated in advance, the controller 21 supplies an exciting current to the drive coil 16m of the second electromagnetic switch 16. The second electromagnetic switch 16 is turned ON, and the normal rotation signal S1 is output to the inverter 12, and the normal rotation power is supplied from the inverter 12 to the lifting motor 20 of the electric chain block. The electric chain block moves up (winds up).

  In addition, when the push button switch BS2 (down) for instructing the electric chain block to descend is operated in advance, the controller 21 energizes the drive coil 16m of the second electromagnetic switch 16 to supply the second electromagnetic switch. The inverter 16 is turned on and the reverse rotation signal S2 is output to the inverter 12, the electric power for lowering is supplied from the inverter 12 to the electric motor 20 for raising and lowering the electric chain block, the electric motor 20 for raising and lowering is reversed, and the electric chain block is lowered Operates (lowering).

Further, when the push button switch BS4 (east) for instructing the electric trolley to travel forward is operated next, the controller 21 energizes the drive coil 17m of the third electromagnetic switch 17 to supply the third electromagnetic switch. 17 is turned ON, and further, an exciting current flows through the drive coil 14m of the normal rotation electromagnetic switch 14, the normal rotation electromagnetic switch 14 is turned ON, and the normal rotation power is supplied from the commercial power supply 10 to the traverse motor 19 of the electric trolley. The traverse motor 19 rotates forward and the electric trolley travels forward.

  When the push button switch BS5 (west) that instructs the electric trolley to move backward is operated next, the controller 21 energizes the drive coil 17m of the third electromagnetic switch 17 to supply the third electromagnetic switch. 17 is turned on, and an excitation current is supplied to the drive coil 13m of the reverse electromagnetic switch 13 so that the reverse electromagnetic switch 13 is turned on, and reverse power is supplied from the commercial power supply 10 to the traverse motor 19 of the electric trolley. Then, the traversing electric motor 19 reverses and the electric trolley travels backward.

  Further, when the push button switch BS1 (upper) for instructing raising / lowering of the electric chain block is operated next, the controller 21 energizes the drive coil 18m of the fourth electromagnetic switch 18 and supplies the fourth electromagnetic switch. 18 is turned ON, and an excitation current is supplied to the drive coil 14m of the forward rotation electromagnetic switch 14, the forward rotation electromagnetic switch 14 is turned ON, and forward rotation power is supplied from the commercial power supply 10 to the lifting motor 20 of the electric chain block. The elevator motor 20 is fed forward, and the electric chain block moves up (winds up).

  Further, when the push button switch BS2 (upper) for instructing the electric chain block to be lowered is operated next, the controller 21 energizes the drive coil 18m of the fourth electromagnetic switch 18 to supply the fourth electromagnetic switch. 18 is turned ON, and an excitation current is supplied to the drive coil 13m of the reverse rotation electromagnetic switch 13, the reverse rotation electromagnetic switch 13 is turned ON, and the reverse rotation power is supplied from the commercial power source 10 to the lifting motor 20 of the electric chain block. The elevator motor 20 is supplied in reverse, and the electric chain block is lowered (lowered).

  When the forward rotation electromagnetic switch 14 and the reverse rotation electromagnetic switch 13 are turned on, the controller 21 supplies an excitation current to the drive coil 14m and the drive coil 13m so that the drive coil 14m and the drive coil 13m are continuously turned on for a minimum of several hundred milliseconds. Thus, the forward rotation electromagnetic switch 14 and the reverse rotation electromagnetic switch 13 do not block the large starting currents of the traverse motor 19 and the lifting motor 20. This time depends on the starting current of the motor. Since the driving current of the electric motor is about three times or more of the steady current, this effect is great. That is, since the forward rotation electromagnetic switch 14 and the reverse rotation electromagnetic switch 13 do not cut off a large starting current, a small electromagnetic switch with a small breaking capacity can be used. Less wear and longer life.

  Further, the controller 21 turns on the output of the inverter 12 and the forward rotation electromagnetic switch 14 or the reverse rotation electromagnetic switch 13 after several tens of milliseconds of the ON operation of the first electromagnetic switch 15 to the fourth electromagnetic switch 18 at the time of activation. . Further, at the time of stopping, the first electromagnetic switch 15 to the fourth electromagnetic switch 18 are turned off after the output of the inverter 12 is stopped or after the forward rotation electromagnetic switch 14 and the reverse rotation electromagnetic switch 13 are turned off. As a result, the first electromagnetic switch 15 to the fourth electromagnetic switch 18 do not turn on and off current, so that the capacity can be reduced and the apparatus can be miniaturized.

  For example, when the push button switch BS1 (upper) is operated, the controller 21 energizes the drive coil 16m of the electromagnetic switch 16 to turn on the electromagnetic switch 16, and after several tens of milliseconds, the forward rotation signal S1 is sent to the inverter 12. Is output. Thereafter, when the push button switch BS4 (East) is operated, the drive coil 17m of the third electromagnetic switch 17 is energized, the electromagnetic switch 17 is turned on, and after several tens of milliseconds, the drive coil of the forward electromagnetic switch 14 is turned on. 14m is energized, and the forward electromagnetic switch 14 is turned ON. When the push button switch BS1 (upper) is released, after the output of the inverter 12 is stopped, the energization of the drive coil 16m of the electromagnetic switch 16 is stopped and the electromagnetic switch 16 is turned off. When the push button switch BS4 (east) is released, after the energization of the drive coil 14m of the forward rotation electromagnetic switch 14 is stopped, the forward rotation electromagnetic switch 14 is turned off, and then the third electromagnetic switch 17 The energization of the drive coil 17m is stopped, and the third electromagnetic switch 17 is turned off.

  FIG. 7 is a diagram showing an operation flow of the drive control device for the electric chain block with the electric trolley according to the present invention. First, it is determined whether or not the push button switch is operated (step ST1). If the push button switch BS1 (up) or BS2 (down) is operated, the process proceeds to step ST2, and the push button switch BS4 (east). Or when BS5 (west) is operated, it transfers to step ST3.

  In step ST2, it is determined whether the command is a start command or a stop command. If the command is a start command, it is determined whether the traverse motor 19 of the electric trolley is being operated by the inverter 12 (during the traverse inverter operation) (step ST4). If it is stopped, the driving of the lifting / lowering motor 20 of the electric chain block selects the inverter 12 (lifting / lowering inverter selection) (step ST5), and if the inverter 12 is operating, the lifting / lowering motor 20 of the electric chain block is selected. The commercial power source 10 is selected for driving (selecting the lifting / lowering commercial power source) (step ST6). In step ST2, if it is a stop command, it is determined that the drive of the lifting motor 20 of the electric chain block is being operated by the inverter 12 (during the lifting inverter operation) (step ST7). The selection of the inverter 12 is canceled (stop lifting / lowering inverter selection is canceled) to stop the lifting / lowering motor 20 (step ST8), and the commercial power source selection is canceled to stop the lifting / lowering motor 20 (step ST8). Lift / stop stop commercial power source selection is canceled) (step ST9).

  In step ST3, it is determined whether the command is a start command or a stop command. If the command is a start command, it is determined whether the lifting / lowering motor 20 of the electric chain block is being operated by the inverter 12 (during the lifting / lowering inverter operation) (step ST10). If 12 is stopped, the inverter 12 is selected for driving the traverse motor 19 of the electric trolley (transverse operation inverter selection) (step ST11). If the inverter 12 is in operation, the traverse motor of the electric trolley Commercial power supply 10 is selected for driving (transverse operation commercial power supply selection) (step ST12). If it is a stop command in step ST3, it is determined that the drive of the electric motor 19 for the electric trolley is being operated by the inverter 12 (during the operation of the traverse inverter) (step 13). In order to stop the electric motor 19, the selection of the inverter 12 is canceled (transverse stop inverter selection is canceled) (step ST14), and if the commercial electric power source is operating, the selection of the commercial power source is canceled to stop the traverse motor 19 ( The traverse stop commercial power source selection is canceled) (step ST15).

  In case of an emergency stop due to an emergency or the like, by operating the emergency stop push button switch BS7, the energization to the drive coil 11m of the electromagnetic switch 11 for turning on the power is cut off, and the electromagnetic switch 11 is turned off. The power supply to the drive control device is cut off. Further, by operating the push button switches BS3 and BS6 for high-speed instruction, the elevating motor 20 and the traverse motor 19 can be moved up and down at high speed and traversed at high speed. In FIG. 4, 11a is an auxiliary contact of the electromagnetic switch 11, and 20b is a brake of the lifting motor 20 of the electric chain block.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible.

It is a figure which shows the structural example of the drive control apparatus of the conventional electric chain block with an electric trolley. It is a figure which shows the example of an external appearance structure of an operation box. It is a figure which shows the structural example of the power circuit of the drive control apparatus of the electric chain block with an electric trolley which concerns on this invention. It is a figure which shows the structural example of the control part of the drive control apparatus of the electric chain block with an electric trolley which concerns on this invention. It is a figure which shows the relationship between pushbutton switch operation, traversing operation | movement, and raising / lowering operation | movement of the drive control apparatus of the electric chain block with an electric trolley which concerns on this invention. It is a figure which shows the relationship between the pushbutton switch and electromagnetic switch of the drive control apparatus of the electric chain block with an electric trolley which concerns on this invention. It is a figure which shows the flow of operation | movement of the drive control apparatus of the electric chain block with an electric trolley which concerns on this invention.

Explanation of symbols

10 Commercial power supply 11 Electromagnetic switch for power-on 12 Inverter
DESCRIPTION OF SYMBOLS 13 Electromagnetic switch for reverse rotation 14 Electromagnetic switch for forward rotation 15 1st electromagnetic switch 16 2nd electromagnetic switch 17 3rd electromagnetic switch 18 4th electromagnetic switch 19 Electric motor for traversing electric trolley 20 For raising / lowering electric chain block Motor 21 Controller 22 AC power supply BS1 Push button switch for instructing up BS2 Push button switch for instructing down BS3 Push button switch for instructing high speed BS4 Push button switch for instructing forward traverse BS5 Push button switch for instructing backward traverse BS6 High speed Push button switch for instruction BS7 Push button switch for emergency stop

Claims (3)

Includes a commercial power supply and one inverter to the power supply unit, a first electromagnetic connecting the forward-reverse switching electromagnetic switch for switching the electric power for the normal and reverse rotation of the commercial power source, a transverse electric motor of the inverter and the electric trolley and switches, and the third electromagnetic switch which connects the second electromagnetic switch to connect the lift motor of the inverter and the electric chain block, the transverse electric motor and the forward-reverse switching electromagnetic switch, the forward-reverse A switching electromagnetic switch and a fourth electromagnetic switch for connecting the lifting motor, and the operation of the traversing switch and the lifting switch of an operation box causes the traversing motor and the lifting motor to be connected from the commercial power source to the inverter. It is configured to be an inverter drive that supplies electric power via a commercial power supply or a commercial power supply that is supplied from the commercial power supply via an electromagnetic switch for forward / reverse switching. A drive control apparatus for an electric trolley with electric chain block,
Control means is provided for driving the traversing motor or the lifting motor using an inverter operated in advance of the operation box as an inverter drive, and using a switch operated next as the commercial power source drive. A drive control device for an electric chain block with an electric trolley. In the drive control device of the electric chain block with the electric trolley according to claim 1,
The drive control device for an electric chain block with an electric trolley, wherein the control means prevents the electromagnetic switch for forward / reverse switching from being opened once for a predetermined period of time. In the drive control device of the electric chain block with the electric trolley according to claim 1 or 2,
The control means starts the inverter or closes the forward / reverse switching electromagnetic switch after closing the first to fourth electromagnetic switches when starting the traversing motor or the lifting motor. An electric chain with an electric trolley characterized in that when the motor for driving or the motor for lifting is stopped, the inverter is stopped or the forward / reverse switching electromagnetic switch is opened, and then the first to fourth electromagnetic switches are opened. Block drive control device.

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