JP5633782B2 - Elevating type multilevel parking system - Google Patents

Description

  The present invention relates to a lift type three-dimensional parking apparatus.

As shown in FIG. 6 (a), the elevating type multilevel parking apparatus 10 has a pit 18 in which a pallet elevating body 16 having a plurality of pallets 12 and 14 fixed in a vertical row is dug down the ground surface GL. A plurality of (in the example shown, three machines 161, 162, and 163) are arranged in the right and left. And each pallet raising / lowering body 161,162,163 is provided with the raising / lowering mechanism which raises / lowers up / down, and can each be raised / lowered independently. And a user operates the switch of the operation panel 20 provided adjacent to the pit 18, calls the target pallet to the ground surface GL, and carries in / out of the vehicle 22. In addition, although detailed description about the raising / lowering mechanism is abbreviate | omitted, a wire, a chain, etc. are used as a power transmission means for raising / lowering the pallet raising / lowering body 16 using an electric motor, hydraulic pressure, etc. as a power source. Moreover, the balance chain for smoothing the raising / lowering operation | movement by guiding each pallet raising / lowering body 16 is provided (for example, refer patent document 1).

The operation panel 20 is a rectangular sealed box. On the surface of the operation panel 20, as in the operation panel 20 </ b> A shown in FIG. 6B, a power switch 24, a lifting operation button 26, and a lowering operation are inserted. Elevating operation switch 30 having a button 28, selector switch 32 having a dial for selecting a pallet elevating body related to loading / unloading from among a plurality of pallet elevating bodies 161, 162, 163, a pallet selected by the selector switch 32 A display board 34 is provided for marking the lifting body. Reference numeral 36 denotes a push button type emergency lift lock release switch for raising the ground surface GL regardless of the position of the other pallet lifting body.
Then, the user of the elevating type multi-story parking apparatus 10 inserts a dedicated key into the power switch 24 and rotates it to turn on the power. By rotating the selector switch 32 on the pallet elevating body 16 relating to loading and unloading. The target pallet 12 or 14 is called to the ground surface GL by simply performing a series of simple operations such as selecting and continuing to press the ascending operation button 26 or the descending operation button 28 of the ascending / descending operation switch 30, and entering and leaving the vehicle 22. Can be done.

In addition, although illustration is abbreviate | omitted, the pallet raising / lowering body 16 of the raising / lowering type | mold three-dimensional parking apparatus 10 may be provided with a 3 step | paragraph pallet, for example, In this case, operation shown by FIG.1 (c). Like the panel 20B, the up / down operation switch 30 is provided with a middle step up button 27 for calling the middle pallet to the ground surface GL in addition to the up operation button 26 and the lowering operation button 28, and the selector switch 32 also has a middle step display. Will be. Further, the number of installed pallet lifting bodies 16 can be arbitrarily set as required, and the selector switch 32 and the display board 34 also correspond to the number of installed pallet lifting bodies 16. Furthermore, the operation panel 20 can be installed independently for each of the pallet lifting bodies 161, 162, and 163. In this case, the selector switch 32 and the display board 34 are not necessary.

JP 2001-164780 A

  By the way, the control circuit 38 of the conventional elevating type multi-story parking apparatus 10 shown in FIGS. 6 (a) and 6 (b) is provided between the control device 40 for controlling the elevating mechanism and the power source 42 as shown in FIG. In addition, the power switch 24 and the emergency lift lock release switch 36 are arranged in parallel. In addition, an ascending operation button 26 and a descending operation button 28 that constitute an elevating operation switch 30 are arranged in series with the power switch 24. Similarly, a selector switch 32 is disposed in series with the power switch 24. The control device 40 is configured by an arithmetic device such as a computer or a relay circuit.

  Here, focusing on the switch circuit 44 including the lifting operation switch 30 and connecting the power switch 24 and the control device 40, FIG. The switch circuit 44 of the circuit 38 is shown in a simplified manner. Now, during normal standby of the elevating type multi-story parking apparatus 10, as shown in FIG. 8A, both the power switch 24 and the elevating operation switch 30 are in the cut-off state. Here, in order to raise and lower the pallet raising / lowering body 16, first, a dedicated key is inserted into the power switch 24 and rotated to bring the power switch 24 into a connected state as shown in FIG. 8B. . Subsequently, the ascending operation button 26 or the descending operation button 28 (see FIGS. 6A and 7) is pressed, and the elevation operation switch 30 is brought into the connected state as shown in FIG. The current from the power source 42 is supplied to 40, and the target pallet lifting body 16 moves up and down.

However, since the operation panel 20 of the elevating type multi-story parking apparatus 10 is often installed outdoors, the operation panel 20 is shown in FIG. 8D due to the influence of rainwater intrusion or condensation due to deterioration of parts or the like. As described above, the contact portion of the ascending operation button 26 or the descending operation button 28 constituting the ascending / descending operation switch 30 may be short-circuited due to welding to a circuit or the like. Then, the elevating operation switch 30 is always in the “ON” state, and there is a risk of causing a malfunction such that the elevating type multilevel parking apparatus 10 is activated only by the switching operation of the power switch 24. For this reason, it is necessary to take measures such as improving the waterproofness and strength of the button switch, and frequently performing maintenance when the weather is bad, etc. The increase in operation will impair the operability, and the maintenance cost will increase. On the other hand, it is possible to select a countermeasure such as adding a safety switch for avoiding malfunction, but this is not preferable because it complicates the operation.
This invention is made | formed in view of the said subject, The place made into the objective is to prevent generation | occurrence | production of a malfunction, without impairing the operativity of the conventional raising / lowering type | mold three-dimensional parking apparatus.

(Aspect of the Invention)
The following aspects of the present invention exemplify the configuration of the present invention, and will be described separately for easy understanding of various configurations of the present invention. Each section does not limit the technical scope of the present invention, and some of the components of each section are replaced, deleted, or further while referring to the best mode for carrying out the invention. Those to which the above components are added can also be included in the technical scope of the present invention.

(1) A pallet lifting body in which a plurality of pallets are fixed in a vertical row, a lifting mechanism that lifts the pallet lifting body up and down, a control device that controls the lifting mechanism, and a command to the control device An elevator type three-dimensional parking apparatus comprising an operation panel for performing at least a power switch and an elevation operation switch, wherein the operation panel includes the elevation switch and includes the power switch and the control device. An elevating type multi-level parking apparatus in which a safety circuit is installed in a switch circuit to be connected, and the safety circuit is installed to shut off the switch circuit when the power is on and the elevating operation switch is not operated .

  The elevating type multi-story parking device described in this section is in a power-on state and an unoperated state of the elevating operation switch, i.e., in a state in which normally the elevating operation command current of the pallet elevating body is not supplied from the power source to the control device, The switch circuit is interrupted by the safety circuit. For this reason, even when the power switch is connected in a state in which the lifting operation switch is short-circuited and is always in the “ON” state, a current, that is, a malfunction signal is not transmitted to the control device via the switch circuit. . When the lifting operation switch is always in the “ON” state, if the lifting operation switch is operated, the safety circuit does not function and the switch circuit is in the conductive state, so the lifting operation switch is “ON”. Or, by “OFF”, a normal lifting operation of the pallet lifting body is performed.

(2) In the above paragraph (1), the safety circuit includes a first bypass circuit that bypasses the switch circuit and the control device to connect a power switch and a power source, and a switching operation of the lifting operation switch. An elevating type three-dimensional parking apparatus including a safety circuit cutoff switch that interlocks the first bypass circuit and a relay switch that shuts off the switch circuit when the first bypass circuit is energized (Claim 1 ).
The elevating type multi-story parking device described in this section is configured to connect the power switch and the power source by bypassing the switch circuit and the control device when the elevating operation switch is short-circuited and is always “ON”. When the bypass circuit is energized, the relay switch is activated (shut-off switching) and the switch circuit is shut off. On the other hand, the first bypass circuit is interrupted by the safety circuit disconnecting switch in conjunction with the switching operation of the lifting operation switch. Therefore, when the raising / lowering operation switch is switched in the power-on state and the raising / lowering operation command current of the pallet raising / lowering body is intentionally supplied from the power source to the control device, the energization of the first bypass circuit is cut off. As a result, the relay switch is inactivated and the switch circuit is energized, so that the normal lifting operation of the pallet lifting body is performed by “ON” or “OFF” of the lifting operation switch.

(3) In the above items (1) and (2), a malfunction signal of the lifting / lowering operation switch is transmitted to the control circuit when the power is turned on and the lifting / lowering operation switch is not operated. An elevating type multi-story parking apparatus in which a failure detection circuit is installed (Claim 2 ).
The elevating type multi-story parking apparatus described in this section is a fault detection circuit from a power source without a current flowing through the switch circuit, that is, a malfunction signal being transmitted to the control device when the power is on and the elevating operation switch is not operated. The state where the current flows to the control device via, the raising / lowering operation switch is short-circuited, and is always in the “ON” state is actively grasped.

(4) In the above item (3), an elevating type three-dimensional parking apparatus comprising a failure display means that operates upon receiving an energization of the failure detection circuit (claim 3 ).
The elevating type multi-story parking device described in this section displays a situation in which the elevating operation switch is short-circuited and is always in an “ON” state by a failure display means, so that a user or an administrator of the device (hereinafter, This is a positive indication of the occurrence of a malfunction. The failure display means is preferably provided with means for visually and audibly notifying the user of the failure, such as a warning light, a display, a warning sound generator, etc., on the operation panel, distribution board or the like.

(5) In the above items (3) and (4), the failure detection circuit includes a second bypass circuit that bypasses the relay switch and connects the lift operation switch and the control device, and the safety circuit. elevating multilevel parking apparatus included an interlocking switch which in conjunction with the shut-off switching of the relay switch to a conductive state of said second bypass circuit (claim 4).

The elevating type multi-story parking apparatus described in this section provides a first bypass circuit that bypasses the switch circuit and connects the power switch and the power source when the elevating operation switch is short-circuited and is always in the “ON” state. When energized, the relay switch is activated and the switch circuit is shut off. At this time, the second bypass circuit is turned on by the interlocking switch interlocked with the switching of the relay switch, so that the current flowing through the lifting / lowering operation switch, that is, the malfunction signal is passed through the second bypass circuit. The situation where the up / down operation switch is short-circuited and is always in the “ON” state is actively grasped.
On the other hand, when the raising / lowering operation switch is switched while the power is turned on and the raising / lowering operation command current of the pallet raising / lowering body is intentionally supplied from the power source to the control device, the energization of the first bypass circuit is cut off. As a result, the relay switch is inactivated and the switch circuit is energized. At this time, since the interlock switch is interlocked with the relay switch, the second bypass circuit is shut off. Therefore, when the normal lifting operation of the pallet lifting body is performed by the switching operation of the lifting operation switch, The current flowing through the operation switch does not flow to the control device via the second bypass circuit.

(6) In the above item (5) , the control device includes a timer for processing energization of the second bypass circuit as a malfunction signal when the connection state of the lifting operation switch continues for a predetermined time or more. Type three-dimensional parking apparatus (Claim 5 ).
In the elevator type multi-story parking device described in this section, when the normal switching operation of the raising / lowering operation switch is performed, the raising / lowering operation switch and the safety circuit cutoff switch interlocked therewith are simultaneously connected. Is assumed. At this time, despite the fact that there is no problem with the lifting operation switch, it is in the same state as when it is pseudo-shorted and is always in the “ON” state. Therefore, when the simultaneous connection state of the lifting / lowering operation switch and the safety circuit disconnection switch continues for a predetermined time or longer by the timer, the energization of the second bypass circuit is processed as a malfunction signal, so that the erroneous detection of the failure is detected. It is to prevent.

(7) In the above items (3) to (6), the raising / lowering operation switch includes at least two buttons, that is, an ascending operation button and a descending operation button, and a failure detection circuit relating to each button is separately sent to the control device 40. Elevating type multi-story parking device connected to . (Claim 6 ).
The elevating type multi-story parking apparatus described in this section performs the specification of a failure part separately for each button by inputting a failure detection signal relating to each button to the control device via a separate failure detection circuit. Is.

(8) In the above items (1) to (7), a plurality of the pallet lifting bodies are arranged adjacent to each other on the left and right sides, and each of the pallet lifting bodies is provided with the lifting mechanism. An elevating type three-dimensional parking apparatus provided with a selector switch for selecting the pallet elevating body.
The elevating type three-dimensional parking apparatus described in this section is configured such that a plurality of pallet elevating bodies are arranged adjacent to the left and right, each pallet elevating body is provided with an elevating mechanism, and these are operated with one operation panel. A pallet lifting / lowering body related to loading / unloading is selected by the switch, and only the target pallet lifting / lowering body is lifted / lowered.

(9) In the above items (1) to (8), the control panel is an elevating type three-dimensional parking device in which an emergency lift lock release switch is provided.
The elevating type multi-story parking device described in this section enables the pallet elevating body to be forcibly raised to the ground surface by switching the emergency lift lock release switch when the pit is flooded. It is.

  Since this invention was comprised in this way, it becomes possible to prevent generation | occurrence | production of a malfunction beforehand, without impairing the operativity of the conventional raising / lowering type | mold three-dimensional parking apparatus.

It is a control circuit diagram of the elevating type three-dimensional parking apparatus according to the first embodiment of the present invention. FIG. 2 shows a simplified switch circuit and safety circuit of the control circuit shown in FIG. 1, where (a) shows a normal standby time of the elevating type multilevel parking apparatus, and (b) shows a connection of a normal power switch. (C) shows the connection state of the normal lifting operation switch, and (d) shows the time of occurrence of a failure in which the lifting operation switch is short-circuited and is always in the “ON” state. It is a control circuit diagram of the elevating type multi-story parking apparatus which concerns on the 2nd Embodiment of this invention. FIG. 4 is a control circuit diagram showing an application example of the control circuit shown in FIG. 3. FIG. 3 is a simplified diagram of a switch circuit, a safety circuit, and a failure detection circuit of the control circuit shown in FIG. 3, (a) is a normal standby time of the elevating type multilevel parking apparatus, (b) is a normal one. The connection state of the power switch, (c) shows the connection state of the normal lifting operation switch, and (d) shows the time of failure when the lifting operation switch is short-circuited and is always in the “ON” state. 1 shows a conventional elevating type three-dimensional parking apparatus, (a) is a schematic diagram of the whole, (b) is a schematic diagram of an operation panel of the elevating type three-dimensional parking apparatus shown in (a), and (c) is an operation panel. It is a schematic diagram which shows another example. It is a control circuit diagram of the conventional elevating type three-dimensional parking apparatus shown in FIG. FIG. 7 shows a simplified switch circuit of the control circuit shown in FIG. 7, where (a) shows a normal standby state of the elevating type multilevel parking apparatus, (b) shows a connection state of a normal power switch, (C) shows the connection state of a normal elevating operation switch, and (d) shows the time of failure when the elevating operation switch is short-circuited and is always in the “ON” state.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. Here, parts that are the same as or equivalent to those of the prior art are assigned the same reference numerals, and detailed descriptions thereof are omitted.

The whole structure of the elevating type multi-level parking apparatus according to the first embodiment of the present invention is the same as that of the conventional elevating type multi-level parking apparatus 10 shown in FIG. Therefore, in the following description, please refer to FIG. 6 as appropriate.
FIG. 1 shows a control circuit 46 of the elevating type multilevel parking apparatus according to the first embodiment of the present invention. In this control circuit 46, a safety circuit 48 is installed in a switch circuit 44 that includes the lifting operation switch 30 and connects the power switch 24 and the control device 40. The safety circuit 48 includes a first bypass circuit 50, a safety circuit cutoff switch 52, and a relay switch 54. The first bypass circuit 50 connects the power switch 24 and the power supply 42 by bypassing the switch circuit 44 and the control device 40. The safety circuit shutoff switch 52 shuts off the first bypass circuit 50 in conjunction with the switching operation of the lifting operation switch 30. The safety circuit cutoff switch 52 and the lifting operation switch 30 are physically linked. Further, the relay switch 54 cuts off the switch circuit 44 when the first bypass circuit 50 is energized.

  Here, with reference to FIG. 2, a description will be given of a circuit during the lifting operation of the pallet lifting body 16. In FIG. 2, the switch circuit 44 and the safety circuit 48 of the control circuit 46 are shown in a simplified manner. Now, at the time of normal standby of the elevating type multilevel parking apparatus 10, as shown in FIG. 2A, both the power switch 24 and the elevating operation switch 30 are in a cut-off state. At this time, since the safety circuit cutoff switch 52 interlocked with the lifting operation switch 30 is in the connected state, the first bypass circuit 50 is in a state where it can be energized. However, since the power switch 24 is cut off, the relay switch 54 is in a connected state without cutting off the switch circuit 44.

  Subsequently, in order to raise and lower the pallet elevating body 16, a dedicated key is inserted into the power switch 24 and is rotated, thereby bringing the power switch 24 into a connected state as shown in FIG. At this time, since the first bypass circuit 50 is energized, the relay switch 54 shuts off the switch circuit 44.

Here, when the ascending operation button 26 or the descending operation button 28 (see FIGS. 1 and 6B) is pressed to bring the ascending / descending operation switch 30 into the connected state as shown in FIG. In conjunction with this, since the safety circuit cutoff switch 52 shuts off the first bypass circuit 50, the relay switch 54 releases the cutoff state of the switch circuit 44 and enters the connected state. Therefore, a current flows from the power source 42 to the control device 40 via the switch circuit 44, and the target pallet lifting body 16 moves up and down.

  On the other hand, as shown in FIG. 2D, even when the lifting operation switch 30 is short-circuited and is always in the “ON” state, the ascending operation button 26 or the descending operation button 28 (see FIGS. 1 and 6B). ) Is not pressed, the safety circuit shut-off switch 52 interlocked with the lifting operation switch 30 does not shut off the first bypass circuit 50, and the first bypass circuit 50 remains in a state in which it can be energized. Is done. Therefore, when the power switch 24 is connected, the relay switch 54 cuts off the switch circuit 44 and no current flows from the power source 42 to the control device 40 via the switch circuit 44.

When the lifting operation switch 30 is always in the “ON” state, the ascending operation button 26 or the descending operation button 28 (see FIGS. 1 and 6B) is pressed to bring the lifting operation switch 30 into the connected state. Then, in conjunction with the lifting operation switch 30, the safety circuit cutoff switch 52 shuts off the first bypass circuit 50. Therefore, the relay switch 54 releases the cutoff state of the switch circuit 44, similarly to FIG. 2 ( c ). Since the safety circuit 48 does not function and the switch circuit 44 is in a conductive state, the pallet lifting / lowering body 16 is normally lifted / lowered by turning the lifting / lowering operation switch 30 “ON” or “OFF”.

  Now, according to the first embodiment of the present invention configured as described above, the following operational effects can be obtained. That is, in the power-on state (the power switch 24 is ON) and the lift operation switch 30 is not operated (normally, the lift operation command current of the pallet lift body 16 is not supplied from the power supply 42 to the control device 40). The safety circuit 48 shuts off the switch circuit 44. For this reason, as shown in FIG. 2D, even when the power switch 24 is in the connected state in a state in which the elevation operation switch 30 is short-circuited and is always in the “ON” state, the current, that is, the malfunction signal is It is not transmitted to the control device 40 via 44. Therefore, it is possible to prevent a malfunction such that the elevating type multi-story parking apparatus 10 is activated only by the switching operation of the power switch 24.

  More specifically, when the up / down operation switch 30 is short-circuited and is always in the “ON” state, the first bypass circuit 50 that bypasses the switch circuit 44 and connects the power switch 24 and the power source 42 is energized. As a result, the relay switch 54 is actuated (cut-off switching), and the switch circuit 44 is cut off. On the other hand, the first bypass circuit 50 is blocked by the safety circuit cutoff switch 52 in conjunction with the switching operation of the lifting operation switch 30. Therefore, when the lifting operation switch 30 is switched in the power-on state and the lifting operation command current of the pallet lifting body 16 is intentionally supplied from the power source 42 to the control device 40, the first bypass circuit 48 When the energization is interrupted, the relay switch 54 is inactivated (conducting switching), and the switch circuit 44 is energized. Therefore, the normal operation of the pallet elevating body 16 is performed by the ON / OFF operation of the elevating operation switch 30. Ascending and descending operations are performed.

Then, a user or the like of the elevating type multi-story parking apparatus 10 inserts a dedicated key into the power switch 24 to perform a rotation operation to turn on the power and rotate the selector switch 32 on the pallet elevating body 16 related to loading / unloading. The target pallet 12 or 14 is called to the ground surface GL only by performing the same simple operation as in the past, such as pressing the ascending operation button 26 or the descending operation button 28 of the ascending / descending operation switch 30. You can enter and exit. Therefore, according to the 1st Embodiment of this invention, it becomes possible to prevent generation | occurrence | production of a malfunction beforehand, without impairing the operativity of the raising / lowering type | mold three-dimensional parking apparatus 10. FIG.
In the above description, “ON” is set by pressing the raising operation button 26 or the lowering operation button 28 that constitutes the raising / lowering operation switch 30. It will be appreciated that an effect can be obtained.

Next, a second embodiment of the present invention will be described with reference to FIGS. Also in the following description, the same or corresponding parts as those in the prior art or the first embodiment of the present invention are denoted by the same reference numerals and detailed description thereof is omitted.
In addition to the first embodiment, the control circuit 56 according to the second embodiment of the present invention includes, as shown in FIG. 3, the switch circuit 44 in a power-on state (the power switch 24 is ON) and A failure detection circuit 58 for transmitting a malfunction signal of the lifting operation switch 30 to the control device 40 when the lifting operation switch 30 is not operated is installed. The failure detection circuit 58 includes a second bypass circuit 60 that bypasses the relay switch 54 of the safety circuit 48 and connects the elevating operation switch 30 and the control device 40, and an interruption switching of the relay switch 54 of the safety circuit 48. An interlocking switch 62 that interlocks and makes the second bypass circuit 60 conductive is included. The relay switch 54 and the interlock switch 62 are physically interlocked.

Although schematically shown only in FIG. 5, it is desirable that the control circuit 56 according to the second embodiment of the present invention is provided with a failure display means 64 that operates when energized by the failure detection circuit 58. . The failure display means 64 is means for informing the user etc. of the failure visually or audibly on the operation panel 20 (FIGS. 6B and 6C), the switchboard, etc., such as a warning light, a display, an alarm sound generating device, etc. Is provided. Further, the control device 40 includes a timer 40a that processes the energization of the second bypass circuit 60 as a malfunction signal when the connection state of the lifting operation switch 30 continues for a predetermined time (for example, 2 seconds) or longer. desirable.

  Here, the circuit explanation at the time of operation of the pallet elevating body 16 of the elevating type multi-story parking apparatus 10 will be described with reference to FIG. In FIG. 5, the switch circuit 44, the safety circuit 48, and the failure detection circuit 58 of the control circuit 56 are shown in a simplified manner. Now, during normal standby of the elevating type multi-story parking apparatus 10, as shown in FIG. 5A, both the power switch 24 and the elevating operation switch 30 are in a cut-off state. At this time, since the safety circuit cutoff switch 52 interlocked with the lifting operation switch 30 is in the connected state, the first bypass circuit 50 is in a state where it can be energized. However, since the power switch 24 is in the cut-off state, the relay switch 54 is in the connected state without cutting off the switch circuit 44. On the other hand, the interlock switch 62 that brings the second bypass circuit 60 into a conducting state in conjunction with the switching of the relay switch 54 is in a state in which the second bypass circuit 60 is shut off because the relay switch 54 is in the connected state. It has become.

  Subsequently, in order to raise and lower the pallet elevating body 16, a dedicated key is inserted into the power switch 24 and is rotated, thereby bringing the power switch 24 into a connected state as shown in FIG. At this time, since the first bypass circuit 50 is energized, the relay switch 54 shuts off the switch circuit 44. The interlock switch 62 interlocks with the switching switching of the relay switch 54 to bring the second bypass circuit 60 into a conducting state. However, since the lifting operation switch 30 is in a blocking state, a current is supplied to the second bypass circuit 60. There is no flow.

Here, when the ascending operation button 26 or the descending operation button 28 (see FIGS. 3 and 6B) is pressed and the ascending / descending operation switch 30 is connected as shown in FIG. In conjunction with this, since the safety circuit cutoff switch 52 shuts off the first bypass circuit 50, the relay switch 54 releases the cutoff state of the switch circuit 44 and enters the connected state. Therefore, a current flows from the power source 42 to the control device 40 via the switch circuit 44, and the target pallet lifting body 16 moves up and down. Further, the interlock switch 62 causes the second bypass circuit 60 to be cut off in conjunction with the connection switching of the relay switch 54, so that no current flows through the second bypass circuit 60.

On the other hand, as shown in FIG. 5D, even when the lifting operation switch 30 is short-circuited and is always in the “ON” state, the ascending operation button 26 or the descending operation button 28 (see FIGS. 1 and 6B). ) Is not pressed, the safety circuit shut-off switch 52 interlocked with the lifting operation switch 30 does not shut off the first bypass circuit 50, and the first bypass circuit 50 remains in a state in which it can be energized. Is done. Therefore, when the power switch 24 is connected, the relay switch 54 cuts off the switch circuit 44 and no current flows from the power source 42 to the control device 40 via the switch circuit 44. Further, the interlock switch 62 interlocks with the switching of the relay switch 54 to turn on the second bypass circuit 60. At this time, since the lifting operation switch 30 is always in the “ON” state, the second bypass circuit A current flows through 60.

  Now, the effects obtained by the second embodiment of the present invention having the above-described configuration are as follows. That is, in the control circuit 56 according to the second embodiment of the present invention, as shown in FIG. 5D, in the power-on state (the power switch 24 is ON) and the lift operation switch 30 is not operated, Even if the raising / lowering operation switch is short-circuited and is always in an “ON” state, a current flowing through the switch circuit 44, that is, a malfunction signal is not transmitted to the control device 40, and the failure detection circuit is supplied from the power source 42. A current flows to the control device 40 via 58. Therefore, it is possible to actively grasp the situation where the lifting operation switch 30 is short-circuited and is always “ON”.

More specifically, when the up / down operation switch 30 is short-circuited and is always in the “ON” state, the first bypass circuit 50 that bypasses the switch circuit 44 and connects the power switch 24 and the power source 42 is energized. As a result, the relay switch 54 is actuated (cut-off switching), and the switch circuit 44 is cut off. At this time, when the second bypass circuit 60 is turned on by the interlock switch 62 that is linked to the switching of the relay switch 54, the current flowing through the lifting operation switch 30, that is, the malfunction signal is changed to the second bypass circuit 60. To the control device 40.
Then, by displaying the state in which the lifting operation switch is short-circuited and always in the “ON” state by the failure display means 64, it is possible to positively indicate the occurrence of a problem to the user or the like. Become. Further, the user or the like can positively grasp the situation (failure) in which the elevation operation switch 30 is short-circuited and is always in the “ON” state via the failure display means 64.

On the other hand, when the lifting operation switch 30 is switched in the power-on state (the power switch 24 is ON) and the lifting operation command current of the pallet lifting body 16 is intentionally supplied from the power source 42 to the control device 40, When the energization of the first bypass circuit 50 is interrupted, the relay switch 54 is inactivated (conduction switching), and the switch circuit 44 is energized. At this time, the interlock switch 62 is interlocked with the relay switch 54, whereby the second bypass circuit 60 is shut off. Therefore, in a situation where the lifting operation switch 30 is short-circuited and is always in the “ON” state, when the normal lifting operation of the pallet lifting body 16 by the lifting operation switch 30 is performed, the lifting operation switch 30 flows. Current does not flow to the control device 40 via the second bypass circuit 62. That is, even when the lifting operation switch 30 is short-circuited and is always in the “ON” state, when the lifting operation switch 30 is turned “ON” or “OFF”, the normal lifting operation of the pallet lifting body 16 is performed. The failure display means 64 can stop displaying the situation where the elevation operation switch is short-circuited and is always in the “ON” state. Note that after the failure is detected in the control device 40, the failure control means 64 can be controlled so that the display of the failure display means 64 is continued until the repair is completed.

  Furthermore, when the normal switching operation of the raising / lowering operation switch 30 is performed, it is assumed that the raising / lowering operation switch 30 and the safety circuit cutoff switch 52 interlocked therewith are simultaneously connected. In this case, the situation is the same as the case where the elevation operation switch 30 is short-circuited in a pseudo manner and is always in the “ON” state although no problem has occurred in the elevation operation switch 30. Therefore, the timer 40a processes the energization of the second bypass circuit 60 as a malfunction signal only when the simultaneous connection state of the lifting operation switch 30 and the safety circuit cutoff switch 52 continues for a predetermined time or more. It becomes possible to prevent erroneous detection of failure.

In addition, detailed description of the same effects as those of the first embodiment of the present invention will be omitted.
4 shows a control circuit 66 according to an application example of the control circuit 56 shown in FIG. The difference between the control circuit 66 and the control circuit 56 is that a failure detection circuit 581 related to the ascending operation button 26 and a failure detection circuit 582 related to the descending operation button 28 are separately connected to the control device 40. is there. According to this configuration, the failure detection signal related to the ascending operation button 26 is input to the control device 40 via the failure detection circuit 581, and the failure detection signal related to the descending operation button 28 is controlled via the failure detection circuit 582. It will be input to the device 40. Therefore, it is possible to specify the failure part separately for each button, and the failure detection circuit 58 relating to both the ascending operation button 26 and the descending operation button 28 is summarized as in the control circuit 56 shown in FIG. Therefore, it is easy to identify the faulty part as compared with the circuit configuration connected to the control device 40.

10: Elevating type multilevel parking device, 12, 14: Pallet, 16, 161, 162, 163: Pallet lifting body, 20: Operation panel, 24: Power switch, 26: Lifting operation button, 28: Lowering operation button, 30: Lifting operation switch, 40: control device, 40a: timer, 42: power supply, 44: switch circuit, 46, 56: control circuit, 48: safety circuit, 50: first bypass circuit, 52: safety circuit cutoff switch, 54 : Relay switch, 58: Failure detection circuit, 60: Second bypass circuit, 62: Interlocking switch, 64: Failure display means

Claims (6)

A pallet lifting body in which a plurality of pallets are fixed in a vertical row, a lifting mechanism for lifting the pallet lifting body up and down, a control device for controlling the lifting mechanism, and a command for inputting a command to the control device An elevating type three-dimensional parking apparatus comprising an operation panel,
The operation panel is provided with at least a power switch and a lift operation switch,
A safety circuit that shuts off the switch circuit in a power-on state and an unoperated state of the lift operation switch is installed in a switch circuit that includes the lift operation switch and connects the power switch and the control device ,
The safety circuit includes a first bypass circuit that bypasses the switch circuit and the control device to connect a power switch and a power source, and the first bypass circuit that is linked to a switching operation of the lifting operation switch. a safety circuit interrupter switch for interrupting, elevating multilevel parking apparatus includes a relay switch and said Rukoto for blocking the switching circuit during energization of said first bypass circuit. The switch circuit is provided with a failure detection circuit that transmits a malfunction signal of the lifting operation switch to the control device when the power is on and the lifting operation switch is not operated. The elevating type three-dimensional parking apparatus according to Item 1 . The elevating type three-dimensional parking apparatus according to claim 2, further comprising a failure display unit that operates upon receiving power from the failure detection circuit. The failure detection circuit includes a second bypass circuit that bypasses the relay switch to connect the lift operation switch and the control device, and the second bypass circuit that is linked with the switching of the relay switch of the safety circuit. The elevating type three-dimensional parking apparatus according to claim 2 or 3, further comprising an interlocking switch for bringing the bypass circuit into a conductive state. 5. The elevator according to claim 4 , wherein the controller includes a timer that processes energization of the second bypass circuit as a malfunction signal when the connection state of the elevator operation switch continues for a predetermined time or more. Type parking system. The lifting operation switch includes two descending operation button and at least increase the operation button, the fault detection circuit according to each button, from claim 2, characterized in that it is connected to separate the control unit 5 The elevating type three-dimensional parking apparatus according to any one of the above.

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