JP4586992B2 - Article processing equipment - Google Patents

Description

  The present invention includes a transport device that transports an article, a control unit that controls the operation of the transport device, and a vibration detection unit that detects vibration caused by an earthquake. The present invention relates to an article processing facility that is configured to execute an earthquake countermeasure process when vibration due to is detected.

  As a conventional example of such an article processing facility, a transport device is configured by a stacker crane, and a plurality of movable racks provided with storage units for storing articles transported by the stacker crane are provided in a parallel arrangement direction. Control means for controlling the operation of the plurality of mobile racks and the stacker crane, the stacker crane being configured to be able to travel along a travel path formed between adjacent mobile racks, and the control means However, as an earthquake countermeasure process, when vibration due to an earthquake is detected by the vibration detection means, when the stacker crane is located in the moving rack's existing area in the travel route, that is, the stacker crane moves adjacent to it. When located between the racks, the movable racks located on both sides of the travel route are separated from each other. Operated, there is one that is configured to perform to set time from the detection of the vibration caused by an earthquake (several seconds) has elapsed by the vibration detecting means (e.g., see Patent Document 1.).

Japanese Patent No. 3441045

  However, in the above-mentioned conventional article processing equipment, the mobile racks on both sides of the stacker crane move in a direction away from each other by a set time by the earthquake countermeasure processing, but are located between adjacent mobile racks at the time of the earthquake occurrence. In some cases, the stacker crane is located between adjacent mobile racks even after the earthquake occurs. In such a case, the mobile rack is separated from the stacker crane by a considerable distance due to the earthquake countermeasure process. However, if the mobile rack is tilted or an article stored in the mobile rack is dropped due to vibration caused by an earthquake, the stacker crane located between adjacent mobile racks may be damaged.

  As described above, in the conventional article processing equipment, there is a possibility that the transfer device may be damaged by the earthquake, and there is room for improvement in protecting the transfer device from the damage by the earthquake countermeasure processing. .

  This invention is made in view of the said actual condition, The objective is to provide the article processing equipment which can prevent that a conveying apparatus is damaged by an earthquake as much as possible.

  An article processing facility according to the present invention includes a conveying device that conveys an article, a control unit that controls the operation of the conveying device, and a vibration detecting unit that detects vibration due to an earthquake, and the control unit includes the vibration. When a vibration due to an earthquake is detected by the detection means, the earthquake countermeasure processing is executed. The first characteristic configuration is that the vibration detection means includes an initial fine tremor caused by an earthquake and the initial tremor. The main movement generated after the fine movement is configured to be detected, and when the initial fine movement is detected by the vibration detecting means as the earthquake countermeasure processing, the transfer device is retracted in advance. When the main motion is detected by the vibration detecting means, the operation of the transfer device is stopped to stop the transfer device. In that it is configured to perform a stop process of controlling.

  According to the first characteristic configuration of the present invention, when the initial fine movement occurs and the vibration detecting means detects the initial fine movement, the control means executes the earthquake countermeasure process, and the conveyor device is preset in the earthquake countermeasure process. The retreat process is executed to obtain the retreated state, and thereafter, when a main movement occurs and the vibration detecting means detects the main movement, the control means executes a stop process to stop the conveying device.

  Therefore, by setting the evacuation state to a state that is not easily damaged by an earthquake, if the transfer device shifts to the evacuation state before the main motion occurs, the main motion It can be subjected to vibrations, and the transport device can be protected as much as possible from damage caused by earthquake.

  Even if the transfer device cannot be completely moved to the retracted state from the occurrence of the initial fine movement until the main movement occurs, the control means does not move when the vibration of the main movement is detected. During the transition of the device to the retracted state, its operation is stopped so as to be in an advantageous state against vibrations, so that interference with surrounding structures due to vibrations of main movements and vibrations of articles being conveyed It is possible to prevent the transfer device from being damaged due to influences or the like.

  In addition, P waves and S waves are known as waves propagating in the crust when crustal deformation occurs at the epicenter of the earthquake, but P waves are waves (longitudinal waves) due to crustal density changes. Because of the difference in the type of wave that the S wave is a wave due to the crustal torsion (transverse wave), the propagation velocity in the crust for each of the P wave and S wave is different, and the fluctuation due to the P wave is relatively small. The shaking caused by the S wave brings a relatively large shaking. For this reason, when crustal deformation occurs at the epicenter, initial tremors with relatively small shaking are first caused by P waves with high propagation velocity, and then major motions with relatively large shaking are caused by S waves with slow propagation velocity. To do. And the time difference between the occurrence of the initial tremor and the main movement depends on the distance to the epicenter.

  Therefore, paying attention to the fact that there is no problem even if the transport device is operated because the vibration due to the initial fine motion is small from the initial fine motion until the main motion occurs. If the transport device is operated to shift to a retracted state that is less likely to be damaged as much as possible, and if the main movement occurs and the transport device is operated, there will be a slight advantage to vibration. Even if the transport device is stopped at that point in order to receive vibration due to main motion and the transport device cannot be completely moved to the retracted state because the distance to the epicenter is short, the damage due to the earthquake is significant. Try not to be a thing.

  As described above, according to the first characteristic configuration of the present invention, it is possible to prevent the transfer device from being damaged by the earthquake as much as possible by receiving the vibration due to the main motion that is highly likely to be damaged in an advantageous state against the vibration. It came to obtain the article processing equipment which can prevent.

  According to a second characteristic configuration of the present invention, in the first characteristic configuration of the present invention, there is provided power supply intermittent means capable of intermittently switching power supply to the transport device, and the control means is configured to perform the stop processing in the stop process, The power supply intermittent means is configured to be controlled so as to cut off the power to the transport device.

  According to the second characteristic configuration of the present invention, when a main motion is detected, the power supply interrupting means is controlled by the stop process executed by the control means, and the power supply to the transport device is cut off. In case of abnormal control caused by an earthquake, such as abnormal operation of the transport device when the control means fails and abnormal control is performed, or a short circuit or leakage when the power cable is disconnected due to an earthquake. It can be prevented as much as possible.

  As described above, according to the second characteristic configuration of the present invention, the article processing facility can prevent the conveyance device from being damaged by the earthquake as much as possible, and can prevent the unexpected situation that is indirectly caused by the earthquake as much as possible. I came to get.

  According to a third characteristic configuration of the present invention, in the first or second characteristic configuration of the present invention, the transport device is configured by a stacker crane that travels along an article storage shelf, and the control means is configured to perform the retreat process. In the retracted state, the stacker crane is configured to control the operation of the stacker crane so that the stacker crane is set in a preset reference state.

  According to the third feature of the present invention, when the evacuation process is executed, the control means controls the operation of the stacker crane so that the stacker crane is in the reference state. By setting a state that is advantageous for vibrations that are difficult to be affected, if an initial fine movement occurs due to an earthquake, the stacker crane is operated to bring the stacker crane to the above-mentioned reference state, and a main movement occurs. If the reference state can be established by the time, the main motion can be received in a state advantageous to the shaking.

  Therefore, in normal operation, it is possible to carry out a quick article transport process using a stacker crane. When an earthquake occurs, the stacker crane comes into contact with other structures such as an article storage shelf, etc. Can be prevented as much as possible.

  In addition, if the main movement occurs before the stacker crane reaches the reference state, the operation of the stacker crane is stopped by the stop process executed when the main movement is detected. It is possible to prevent the stacker crane from being damaged as much as possible by causing an abnormal behavior such as, for example, colliding with an adjacent article storage shelf under vibration due to movement.

  As described above, according to the third characteristic configuration of the present invention, it is possible to obtain an article processing facility capable of preventing the stacker crane from being damaged by an earthquake as much as possible while being able to perform a quick article transfer process by the stacker crane. It came to.

  According to a fourth characteristic configuration of the present invention, in the third characteristic configuration of the present invention, the reference state is such that the stacker crane is in a retracted position provided outside the range of the article storage shelf in the traveling direction of the stacker crane. The point is that it is set as a position.

  According to the fourth characteristic configuration of the present invention, when the retreat process is executed, the operation of the stacker crane is performed so that the stacker crane is positioned in a retreat position provided outside the presence range of the article storage shelf in the traveling direction. Therefore, if the stacker crane can be positioned in the retracted position before the main movement occurs, the stacker crane can be subjected to the main movement in the state where the stacker crane is stopped at the retracted position. Even if the stacker crane is greatly shaken by the main movement, the possibility of contact with each other is surely reduced, and the reliability that can prevent the stacker crane from being damaged is improved.

  As described above, according to the fourth characteristic configuration of the present invention, the article processing which can prevent the stacker crane from being damaged by the earthquake with high certainty while being able to perform the article conveying process quickly by the stacker crane. I got the equipment.

  According to a fifth characteristic configuration of the present invention, in the first or second characteristic configuration of the present invention, the transport device is configured by a transport conveyor that transports a placed article, and the control unit is configured to perform the retreat process. In the retracted state, the operation of the transport conveyor is controlled so as to set the transport speed of the transport conveyor to a low speed operation state in which the transport speed is lower than the normal transport speed.

  According to the fifth characteristic configuration of the present invention, when the initial fine movement due to the earthquake is detected by the vibration detecting means and the evacuation process is executed, the transfer conveyor is in a low-speed operation state, and the transfer speed of the transfer conveyor becomes the normal transfer speed. Therefore, in normal operation, the conveyor is operated at the normal conveyance speed to efficiently carry out the article conveyance process, and when the initial tremor due to the earthquake occurs, the conveyor is operated at low speed. When the main movement occurs after the state, the conveyor can be stopped by the stop process.

  Therefore, it is possible to avoid vibrations caused by main movements that are highly likely to cause damage in a state that is disadvantageous to vibrations, and to receive vibrations caused by main movements in a state that is advantageous against vibrations. This damage can be made smaller than that which can occur when the conveyor is still operating and is subject to vibrations from the main motion.

  And if the conveyor is completely shifted to a low-speed operation state due to the evacuation process when the main movement occurs, when the conveyor is stopped by the stop process, it should be stopped gently to avoid sudden speed changes. Therefore, it is possible to reduce the impact received by the articles placed on the conveyor when the stop process is executed, and damage to the conveyor is caused by the behavior of the articles when the conveyor is stopped. This can be prevented as much as possible.

  As described above, according to the fifth characteristic configuration of the present invention, in the article processing facility constituted by the conveyor for conveying the placed article, the conveyor can prevent the conveyor from being damaged by an earthquake as much as possible. It came to obtain the article processing equipment.

  An embodiment of an article processing facility according to the present invention will be described based on the drawings with an example applied to an article storage facility for storing articles.

  As shown in FIG. 1, the article storage facility SU is capable of traveling on a plurality of article storage shelves 1 and traveling rails 2 provided along a plurality of travel paths L formed between these article storage shelves 1. The stacker crane 3, the stacker crane 3, and the stacker crane 3 are transferred from the article storage shelf 1 by the storage conveyor 4 and the stacker crane 3 in which the transfer location Pin for transfer is set. The delivery conveyor 5 for delivery in which the transfer place Pout for delivery to which the article 9 is transferred is set.

  Each article storage shelf 1 is configured by arranging a plurality of article storage portions 1a for storing articles 9 in the vertical and horizontal directions, and the transfer device TM provided in the stacker crane 3 is operated by the stacker crane 3 in the horizontal direction of the shelf and By moving in the vertical direction of the shelf and being positioned at the transfer work position corresponding to each article storage section 1a, the goods 9 can be stored in and out of each article storage section 1a.

  Each traveling rail 2 is provided over the existence range in the shelf width direction of the corresponding article storage shelf 1 and the outside thereof. Specifically, each traveling rail 2 has an end on the side where the entrance conveyor 4 and the exit conveyor 5 are located extended outside the range of the article storage shelf 1 in the shelf width direction. It is provided in the state. As a result, the stacker crane 3 travels until the stacker crane 3 is in a traveling position corresponding to the origin position HP set outside the range in which the article storage rack 1 is in the width direction of the shelf. The article 9 can be transferred by the transfer device TM to the transfer position Pin for warehousing and the transfer position Pout for warehousing in the warehousing conveyor 5.

  Here, the origin position HP is a reference position of the traveling position in the traveling control of the traveling carriage 10 of the stacker crane 3 and is a reference position of the ascending / descending position in the lifting control of the elevator 12 of the stacker crane 3. More specifically, the traveling carriage 10 of the stacker crane 3 is located at the end of the traveling rail 2 on the side where the entry conveyor 4 and the exit conveyor 5 are located, and the elevator 12 is the lower limit position of the elevator range. The position of the stacker crane 3 when it is located at is set as the origin position HP.

  In addition, the transfer conveyor 4 for warehousing and the conveyor 5 for warehousing are connected to the carry-in / out conveyor 6, and the article storage shelf 1 is provided by providing a well-known transfer route branching device and transfer route merging device at the connection point. The article 9 to be loaded can be carried in from the outside, and the article 9 unloaded from the article storage shelf 1 can be carried out to the outside.

  The article storage facility SU is configured to supply driving power to the transport conveyor 4 for delivery, the transport conveyor 5 for delivery, and the carry-in / out conveyor 6 to a supply state and a non-supply state, to each stacker crane 3, and to a first control described later. A power supply control device HE is provided as power supply interrupting means that can be switched between a supply state and a non-supply state for operating power to the device H1, the second control device H2, and the conveyor control device H3.

  Although detailed description is omitted, the power supply control device HE can be configured by, for example, a circuit breaker such as a relay for high power control provided for each power supply destination. The power supply control device HE is in a state in which power is supplied to each power supply destination (supply state) and a state in which power is not supplied (non-supply) by a system control device HS (see FIG. 3) described later. State) and is controlled to be switched.

  The supply of electric power to the stacker crane 3 is performed by a conductive guide bar for supplying electric power provided along the traveling rail 2 in a state of being electrically insulated from the ground on which the traveling rail 2 and the like are provided, A conductive contact brush provided on the stacker crane 3 corresponding to the ground height of the guide bar and provided so as to maintain a contact state with the conductive guide bar at all times regardless of the travel position of the stacker crane 3. Done through.

  As shown in FIG. 2, the stacker crane 3 includes a traveling cart 10 that can travel along the traveling rail 2, a lifting platform 12 that can move up and down along a lifting mast 11 erected on the traveling cart 10, The article transfer device TM equipped on the lifting platform 12 is provided.

  A pair of front and rear masts 11 is provided at each of the front end portion and the rear end portion of the traveling carriage 10. Each of the pair of front and rear lifting masts 11 is erected on the traveling carriage 10 with its lower end supported by the traveling carriage 10. An upper frame 15 that connects the upper ends of the pair of front and rear masts 11 is provided at the upper end of the lift mast 11. The upper frame 15 includes a pair of guide rollers 15 a that can rotate around the vertical axis while sandwiching the guide rail 13 from the left and right, and is provided so as to be guided by the guide rail 13. In this manner, each of the pair of front and rear lifting masts 11 is provided such that the upper end portion thereof is guided by the guide rail 13.

  The lifting platform 12 is supported and supported by a pair of front and rear lifting masts 11 erected on the traveling carriage 10 so as to be movable up and down, and is suspended and supported by lifting wires 14 connected to the left and right sides thereof. It has become. The elevating wire 14 is wound around a guide pulley 16 provided on the upper frame 15 and a guide pulley 17 provided on one elevating mast 11, and is connected to a take-up drum 18 provided at one end of the traveling carriage 10. ing. The take-up drum 18 is driven to rotate in the forward and reverse directions by an elevating electric motor 19 so that the elevating platform 12 is raised and lowered by a feeding operation and a winding operation of the elevating wire 14. The lifting electric motor 19 is an inverter motor with a speed reducer 19a.

  The lifting platform 12 is provided with a lifting rotary encoder 20 as a vertical position detecting means for detecting the lifting position of the lifting platform 12 in the vertical direction. Although not shown in the drawings, the rotary shaft of the lifting rotary encoder 20 is provided with a sprocket that meshes with a chain provided along the longitudinal direction of the lifting mast 11. The lifting rotary encoder 20 detects the lifting position of the lifting platform 12 in the vertical direction from the lifting distance of the lifting platform 12.

  Further, the traveling carriage 10 is provided with two front and rear wheels 21 that can travel on the traveling rail 2, and one of the two wheels 21 on one end side in the longitudinal direction of the vehicle body is driven by the traveling electric motor 22. The driving wheel 21a for propulsion is configured, and the wheel on the other end side in the longitudinal direction of the vehicle body is configured as a freely driven driven wheel 21b. The traveling electric motor 22 is an inverter motor with a speed reducer, and is configured as a horizontal driving means. The traveling carriage 10 is configured to travel along the traveling rail 2 by rotationally driving the drive wheels 21 a by the operation of the traveling electric motor 22.

  The traveling carriage 10 is provided with a traveling rotary encoder 23 that detects the traveling position of the traveling carriage 10 in the horizontal direction. Although illustration is omitted, a sprocket that meshes with a chain provided along the longitudinal direction of the traveling rail 2 is provided on the rotating shaft of the traveling rotary encoder 23. The travel rotary encoder 23 detects the travel position of the travel cart 10 in the horizontal direction from the travel distance of the travel cart 10.

  The article transfer device TM includes a fork device 24 that can freely place and support the article 9 and can be moved back and forth between a retracted position where the article 9 is retracted toward the lifting platform 12 and a protruding position where the article 9 is protruded toward the external article transfer side. The fork electric motor 25 as an exit / retreat driving means for causing the fork device 24 to project from the retracted position to the projecting position and to retract from the projecting position to the retracted position, and the exit / retreat position for detecting the retracted position of the fork device 24 A fork rotary encoder 26 as position detecting means is provided.

  As shown in FIG. 3, the present article storage facility SU is provided with a first control device H <b> 1 and a second control device H <b> 2 corresponding to each of the two stacker cranes 3. The first control device H1 includes an elevating electric motor 19, a traveling electric motor 22, and a fork electric motor of the stacker crane 3 that travels and travels along a travel route L corresponding to the position where the first control device H1 is installed in FIG. The motor 25 is connected to be controllable via an infrared communication device (not shown), and the rotary encoder 20, the rotary encoder 23 and the fork rotary encoder 26 are also connected via an infrared communication device (not shown). These pieces of detection information are connected so as to be inputable.

  In FIG. 3, only the control configuration in the first control device H1 is shown in detail among the two control devices shown in FIG. Similarly, the motor and rotary encoder of the stacker crane 3 that travels along the corresponding travel route L are connected as control input / output devices via an infrared communication device.

  Each of the first control device H1 and the second control device H2 controls the operation of the corresponding stacker crane 3 based on the warehousing command and the warehousing command that are instructed by the system control device HS as the upper control means. .

  Each of the two warehousing conveyors 4, the two warehousing conveyors 5, and the one carrying-in / out conveyor 6 shown in FIG. 1 is constituted by a roller conveyor that conveys the placed articles 9. Each of the conveyors is provided with a first conveyor motor M <b> 1 to a fifth conveyor motor M <b> 5 that transport each conveyor. As shown in FIG. 3, the first conveyor motor M1 to the fifth conveyor motor M5 are controllably connected to the conveyor control device H3, and the first conveyor motor M1 to the fifth conveyor motor are controlled by the conveyor control device H3. The driving of M5 is controlled.

  The conveyor control device H3 controls the operation of each warehousing conveyor 4 and each shipping conveyor 5 based on the warehousing command and the warehousing command which are instructed by the system control device HS as a higher-level control means, and performs system control. The operation of the carry-in / out conveyor 6 is controlled on the basis of a carry-in / out command issued by the device HS. And when operating the entrance conveyor 4 and the exit conveyor 5, the first conveyor motor M1 to the fourth conveyor motor M4 are set so that the transfer speed becomes the transfer speed V1 as the normal transfer speed. When the drive is controlled and the carry-in / out conveyor 6 is operated, the drive of the fifth conveyor motor M5 is controlled so that the carrying speed becomes the carrying-in / out carrying speed V2 as the normal carrying speed. Incidentally, the carry-in / out conveyance speed V2 is set to be higher than the loading / unloading conveyance speed V1.

  With the configuration described above, the operation of the stacker crane 3 is controlled by the first control device H1 and the second control device H2 based on the warehousing command and the warehousing command commanded by the system control device HS, so that the goods can be entered into the article storage portion 1a. Based on the loading / unloading command instructed by the system controller HS after the unloading work is performed, the conveyor control device H3 controls the operations of the loading conveyor 4 and the unloading conveyor 5 and the loading / unloading conveyor 6 to the outside. The loading / unloading work is processed.

  Incidentally, the first control device H1 and the second control device H2 are configured to transmit a completion signal to the system control unit HS when the warehousing operation and the warehousing operation based on the warehousing command and the warehousing command are completed, Further, the conveyor control device H3 is configured to transmit a completion signal to the system control device HS when the carry-in / out operation based on the carry-in / out command is completed. As a result, the system controller HS commands the warehousing command, the warehousing command, and the loading / unloading command while managing the progress of the warehousing work and the warehousing work, and the stacker crane 3, the warehousing conveyor 4, and the warehousing conveyor 5 and the carry-in / out conveyor 6 can be controlled.

  That is, each of the stacker crane 3, the transfer conveyor 4, the transfer conveyor 5 and the transfer conveyor 6 constitutes the transfer device of the present invention, and the system control device HS, the first control device H1, and the second control device H2. Or the conveyor control device H3 constitutes the control means of the present invention.

  As shown in FIG. 3, a P-wave detection device Dp and an S-wave detection device Ds as vibration detection means DET are connected to the system control device HS, and the system control device HS and the first control device of the article storage facility SU. H1, the 2nd control apparatus H2, and the conveyor control apparatus H3 are comprised so that the countermeasure at the time of an earthquake may be performed, if the vibration by an earthquake is detected by the vibration detection means DET. For example, the P wave detection device Dp and the S wave detection device Ds are arranged so that the installation direction of the earthquake is based on the time change of the capacitance between the electrodes provided corresponding to the vibration directions of the P wave and the S wave. Waves and S waves can be detected.

  Hereinafter, earthquake countermeasure processing executed by the system control device HS and the like will be described. The earthquake countermeasure processing is actually performed by the microcomputer Cs provided in the system control unit HS, the microcomputers C1 and C2 provided in the first control device H1 and the second control device H2, and the conveyor control device H3. The microcomputer C3 provided is executed by executing an earthquake countermeasure processing program stored in a storage device provided for each control device.

  In other words, when the P wave propagates from the earthquake source and the initial tremor occurs at the point where the article storage facility SU is provided, the P wave detector Dp detects the initial tremor and the P wave detector Dp. When the P-wave detection signal is triggered by the system control device HS, the earthquake countermeasure process is started. The earthquake countermeasure process includes three processes, a crane evacuation process, a conveyor decelerating process, and a power cut-off process, which will be described later. Hereinafter, the control operation of each control device after the earthquake countermeasure process is started will be described based on the flowcharts of FIGS. 4 to 6.

  As shown in FIG. 4, when the P-wave detection device Dp detects the initial fine movement, an interrupt process is executed by the microcomputer Cs of the system control device HS, an earthquake occurrence notification signal is generated, and the first control is performed from the system control device HS. It is delivered all at once to the device H1, the second control device H2, and the conveyor control device H3 (step # 1). Each of the microcomputer C1 of the first control device H1 and the microcomputer C2 of the second control device H2 that has received the earthquake occurrence notification signal executes crane evacuation processing as interrupt processing (step # 2 and step # 3). Receiving the generation notification signal, the microcomputer C3 of the conveyor control device H3 executes the conveyor deceleration process as an interruption process (step # 4).

  As will be described in detail later, in the crane retraction process, the stacker crane 3 is positioned at the above-described origin position HP as a retraction position provided outside the range in which the article storage rack 1 exists in the traveling direction of the stacker crane 3 ( The operation of the stacker crane 3 is controlled so as to be equivalent to the reference state of the present invention.

  That is, in the crane retreat process, the operation of the stacker crane 3 is controlled so that the stacker crane 3 is in a preset reference state. In the article storage facility SU, this reference state is set in advance as a retreat state in the earthquake occurrence process, and when the crane retreat process is executed in the first control device H1 and the second control device H2, the stacker crane 3 The operation of the stacker crane 3 is controlled so as to be in the retracted state. Therefore, the crane evacuation process corresponds to the evacuation process of the present invention.

  Further, in the conveyor deceleration process, the transfer conveyor 4 for the warehousing, the transfer conveyor 5 for the warehousing, and the transfer conveyor 6 for the warehousing and loading / unloading conveyor 6 are set to the transfer speed V3 for the earthquake. And the operation of the carry-in / out conveyor 6 is controlled. And the conveyance speed V3 for earthquakes is set to be lower than the above-described conveyance speed V1 for loading and unloading and the conveyance speed V2 for loading and unloading.

  That is, in the conveyor decelerating process, the transfer speeds of the transfer conveyor 4, the transfer conveyor 5 and the transfer conveyor 6 are lower than the normal transfer speed (the transfer speed V1 for transfer and the transfer speed V2 for transfer). The operation of each conveyor is controlled so as to be in a low-speed operation state where the transport speed (the transport speed for earthquake V3) is set. In this article storage facility SU, this low-speed operation state is set in advance as a retreat state in the earthquake occurrence processing, and when the conveyor deceleration device is executed in the conveyor control device H3, the warehousing transport conveyor 4 and the unloading transport The operation of each conveyor is controlled so that the conveyor 5 and the carry-in / out conveyor 6 are in the retracted state. Therefore, the conveyor deceleration process corresponds to the retreat process of the present invention.

  When an S wave propagates from the earthquake source and a main motion occurs at a point where the article storage facility SU is provided, the S wave detection device Ds detects the main motion (step # 5). When the S wave detection device Ds detects the main motion, the microcomputer Cs of the system control device HS executes the power shut-off process (step # 6).

  In the power cut-off process, the system control device HS issues a power cut-off command to the power supply control device HE, and based on the power cut-off command, the power supply control device HE sends each power supply destination (stacker crane 3, transport for warehousing) The supply of electric power to the conveyor 4, the delivery conveyor 5 for delivery, the carry-in / out conveyor 6, the first control device H1, the second control device H2, and the conveyor control device H3) is cut off. As a result, the operations of the stacker crane 3, the loading conveyor 4, the shipping conveyor 5, and the loading / unloading conveyor 6 are stopped, and the operations of the first control device H1, the second control device H2, and the conveyor control device H3 are also stopped. . Therefore, the power shutdown process corresponds to the stop process of the present invention.

  As described above, the system control device HS and the first control device H1, the system control device HS and the second control device H2, and the system control device HS and the conveyor control device H3 are added to the P wave detection device Dp as the vibration detection means DET. When the initial fine movement is detected, each stacker crane 3 and the transfer conveyor 4 for storage, the transfer conveyor 5 for discharge, and the transfer conveyor (hereinafter referred to as “each device” as appropriate) are set in a retracted state set in advance. Therefore, when the evacuation process for controlling the operation of each device is executed and the main motion is detected by the S wave detection device Ds as the vibration detecting means DET, the operation of each device is stopped to stop each device. It is comprised so that the stop process which controls may be performed.

  Next, the control operation of the first control device H1 and the second control device H2 in the crane retraction process will be described based on the flowchart of FIG. In addition, since the control operation | movement in the crane evacuation process of the 1st control apparatus H1 and the 2nd control apparatus H2 is common, below, the control operation of the 1st control apparatus H1 is demonstrated to an example.

  As shown in FIG. 5, the first control device H1 is configured such that the stacker crane 3 is located at the origin position HP at the time of starting execution of the crane retracting process based on the output information of the lifting rotary encoder 20 and the traveling rotary encoder 23. (Step # A1). If it is located at the origin position HP, the traveling operation and the raising / lowering operation of the stacker crane 3 are not performed, and it is determined in step # A7 whether or not the fork device 24 is in the retracted position.

  If the fork device 24 is not in the retracted position, it is determined No in step # A7, and the operation of the fork electric motor 25 is controlled until the fork device 24 is in the retracted position (steps # A8 to # A9).

  If an earthquake occurs during the retreat operation of the fork device 24, the retreat operation of the fork device 24 is continued without interruption when the earthquake countermeasure process is started. On the contrary, when an earthquake occurs while the fork device 24 is protruding, the fork device 24 is interrupted when the earthquake countermeasure process is started. Thus, the retraction operation opposite to the protrusion operation that has been performed until then is started.

  If the fork device 24 is in the retracted position, it is determined Yes in step # A9, the operation of the fork electric motor 25 is stopped, and the standby state of step # A10 is entered. If the stacker crane 3 is at the origin position HP at the start of the crane evacuation process and the fork device 24 is in the retracted position, “Yes” is determined in step # A7, and the standby state (step # A10) is left as it is. .

  If the stacker crane 3 is not located at the home position HP at the start of crane retreat processing, it is first determined in step # A2 whether or not the fork device 24 is located at the retreated position. Otherwise, it is determined as No in step # A2, and the fork electric motor 25 is operated until the fork device 24 is in the retracted position by the processing of step # A3 and step # A4 as in the processing of step # A8 and step # A9. After the operation is controlled, the process proceeds to step # A5.

  If the fork device 24 is located at the retraction position at the start of the crane retracting process, such as when an earthquake occurs while the stacker crane 3 is moving up or down or running, step # It is determined Yes in A2, and the process directly proceeds to step # A5.

  In step # A5, the lifting electric motor 19 and the traveling electric motor are based on the lifting position information by the lifting rotary encoder 20 and the traveling position information by the traveling rotary encoder 23 so that the stacker crane 3 is at the origin position HP. The operation of 22 is controlled, the traveling carriage 10 is caused to travel, and the lifting platform 12 is raised and lowered.

The stacker crane 3 moves up and down toward the origin position HP in order to pick up the article 9 at the warehousing transfer location Pin by the warehousing command or to lower the article 9 to the warehousing transfer location Pout by the warehousing command. Alternatively, when the earthquake countermeasure process is started during the traveling operation, the operation of the stacker crane 3 is continued without interrupting the lifting operation or the traveling operation of the stacker crane 3.
On the other hand, when an earthquake occurs while the stacker crane 3 is moving up and down or running toward the transfer work position corresponding to the article storage unit 1a, the earthquake countermeasure process is started. The raising / lowering operation or traveling operation of the stacker crane 3 is interrupted in the middle, and the raising / lowering operation or traveling operation opposite to the direction in which the stacker crane 3 is moved away from the original position HP is started. become.

  If the stacker crane 3 reaches the home position HP, it is determined as Yes in Step # A6, the operations of the lifting electric motor 19 and the traveling electric motor 22 are stopped, and the standby state of Step # A10 is entered.

Next, the control operation of the conveyor control device H3 in the conveyor deceleration process will be described based on the flowchart of FIG.
As shown in FIG. 6, the conveyor control device H <b> 3 is in a transfer operation at the start of execution of the conveyor deceleration process among the transfer conveyor 4, the transfer conveyor 5, and the load / unload conveyor 6 that are controlled objects. The conveyor speed of the existing conveyor is reduced (step # B1).

  For example, when the conveyor conveyor 4 and the carry-in / out conveyor 6 on the left side of FIG. 1 are in a transfer operation at the start of the conveyor deceleration process, the transfer speed of the transfer conveyor 4 is set to the transfer for entry / exit. At the same time as controlling the operation of the first conveyor motor M1 so as to change from the speed V1 to the earthquake transport speed V3, the transport speed of the carry-in / out conveyor 6 changes from the carry-in / out transport speed V2 to the earthquake transport speed V3. Thus, the operation of the sixth conveyor motor M6 is controlled.

  The conveyor control device H3 is configured to manage whether each conveyor to be controlled is operating or stopped by a control program processed by the built-in microcomputer C3 using a transport operation flag or the like. Thus, it is possible to identify the conveyor that is in the transfer operation at the time when the execution of the conveyor deceleration process as the interrupt process is started.

  When the conveyor control device H3 decelerates and changes the conveying speed of the conveyor that is in the conveying operation, the conveying conveyor is rapidly decelerated and the article 9 placed and conveyed by the conveyor slides down from the conveying surface due to inertia. In order to prevent this, the operation of the corresponding conveyor motor is controlled so that the conveyor to be decelerated is decelerated at a gradual deceleration.

  In step # B2, it is determined whether or not the conveyor conveyance speed of the deceleration target conveyor has reached the earthquake conveyance speed V3. That is, when the conveyor speed of the conveyor to be decelerated becomes the earthquake transport speed V3, Yes is determined in step # B2, the deceleration operation for the conveyor is completed, and the conveyor is transported at the earthquake transport speed V3. The standby state is entered (step # B3). In the example described above, the speed reduction operations of the warehousing conveyor 4 and the carry-in / out conveyor 6 proceed simultaneously, and the conveying speed of the warehousing conveyor 4 is decelerated from the warehousing conveying speed V1 to the earthquake conveying speed V3. Then, the state where the warehousing conveyor 4 is transported at the earthquake speed V3 is maintained, and the conveying speed of the carry-in / out conveyor 6 is changed from the loading / unloading speed V2 to the earthquake speed V3. When decelerated, the state in which the carry-in / out conveyor 6 is transported at the earthquake transport speed V3 is maintained.

  When the initial fine movement due to the P wave is detected by the P wave detection device Dp, the above-described crane retracting process and conveyor decelerating process are started, but in a standby state (step # A10 in FIG. 5 and step # B3 in FIG. 6). By the time, when the S wave arrives at the installation point of the article storage facility SU and the main motion due to this S wave is detected by the S wave detection device Ds, the power shut-off process described above is executed, Operation is forcibly stopped.

  As described above, in the present article storage facility SU, when an earthquake occurs and the vibration of the initial fine movement due to the P wave is detected by the P wave detection device Dp, the evacuation process is executed, and the vibration of the main movement due to the S wave becomes S. Until the detection by the wave detection device Ds, each device is controlled to be in the retracted state by the evacuation processing such as the crane evacuation processing and the conveyor deceleration processing, and the vibration of the main motion due to the S wave is detected by the S wave detection device Ds. Then, a power shut-off process as a stop process is executed, power supply to each device is shut off, and the operation of each device stops.

  Therefore, if there is sufficient time from the occurrence of the initial fine movement to the occurrence of the main movement, the stacker crane 3, the warehousing conveyor 4, the unloading conveyor 5, and the loading / unloading conveyor 6 are put into a retracted state. It can be completely transferred, can receive main motion in a state as advantageous as possible against shaking, and can prevent equipment damage due to earthquake as much as possible. Further, even if there is not sufficient time from the occurrence of the initial fine movement to the occurrence of the main movement, the stacker crane 3, the warehousing conveyor 4, the gantry conveyor 5, and the carrying in / out conveyor 6 are stopped. Therefore, it is possible to receive the main motion in a relatively advantageous state over what is configured to continue the operation of each device until the transition to the evacuation state is completed, and to prevent damage to the equipment due to the earthquake as much as possible be able to. As described above, in the article storage facility SU, when an earthquake occurs, it is possible to prevent damage to the facility due to the earthquake as much as possible by taking measures adapted to the distance to the epicenter of the earthquake that has occurred.

[Another embodiment]
Hereinafter, other embodiments are listed.

(1) In the said embodiment, although the conveyance apparatus was comprised with the stacker crane 3 and what the conveyance apparatus was comprised with various conveyance conveyors, such as the conveyance conveyor 4 for warehousing, not only this but, for example, The conveying device may be configured by a conveying cart that travels along the set movement path to convey the article, and the specific configuration of the conveying device is not limited to the above example.

  If the transfer device is constituted by the transfer carriage, the retracted state in the earthquake countermeasure process is a low speed operation in which the running speed of the transfer carriage is set to a low speed that is reduced from the normal transfer speed. It is conceivable that the vehicle is set in a state or the vehicle is set in a state where the transport carriage is positioned at a preset retreat position on a set movement route.

(2) In the above embodiment, the vibration detection means DET is exemplified by the P wave detection device Dp and the S wave detection device Ds. However, the present invention is not limited to this. It is also possible to use a device that can detect the above, and the specific configuration can be changed as appropriate.

(3) In the above embodiment, the control means is constituted by the system control device HS to which the vibration detection means DET is connected and the first control device H1, the second control device H2 or the conveyor control device H3 connected thereto. However, the present invention is not limited to this, and the vibration detection means DET is connected to the first control device H1, the second control device H2, and the conveyor control device H3, respectively, and the control means is configured by each of these control devices. Or a system control unit HS or the like may be integrally configured.

(4) In the above-described embodiment, the reference state is exemplified as a state set at the origin position HP as the retracted position. However, the present invention is not limited to this, and for example, the traveling carriage 10 of the stacker crane 3 is a traveling rail. 2 may be set as a state in which the lifting platform 12 is positioned at the lower end position of the lifting range, and the transport device is set to the vibration. It can be set as appropriate as long as it is in an advantageous position.

(5) In the above-described embodiment, an example in which one state is set in advance as the evacuation state is illustrated. However, the present invention is not limited to this, and a plurality of states may be set in advance as the evacuation state. In this case, the control means, in the evacuation process, at the time when the execution of the countermeasure process at the time of the earthquake is started, while taking into account the correlation with the index indicating the advantage for vibration of the evacuated state after the transition and the transition time, The evacuation state selection process for selecting a evacuation state to be transferred from among the plurality of evacuation states based on the operation state of the conveyance device is executed, so that the evacuation state selected by the evacuation state selection process is achieved. What is necessary is just to comprise so that an action | operation may be controlled.

(6) In the above embodiment, the article processing facility is exemplified by the article storage facility. However, the present invention can be applied to an article processing facility other than the storage facility.

Overall plan view of the goods storage facility Front view of stacker crane Control block diagram Flow chart showing processing details of earthquake countermeasure processing The flowchart which shows the control action of the 1st control device in crane evacuation processing Flowchart showing the control operation of the third control device in the conveyor deceleration process

Explanation of symbols

HP Retraction positions H1, H2, H3, HS Control means HE Electric power supply intermittent means V1, V2 Normal transport speed V3 Low speed transport speed DET, Dp, Ds Vibration detection means 3, 4, 5, 6 Transport device 9 Article

Claims (5)

A transport device for transporting articles, a control means for controlling the operation of the transport device, and a vibration detection means for detecting vibration due to an earthquake,
The control means is an article processing facility configured to execute earthquake countermeasure processing when vibration due to an earthquake is detected by the vibration detection means,
The vibration detection means is configured to be able to detect initial tremor due to an earthquake and main motion generated after the initial tremor,
As the countermeasure processing at the time of the earthquake, when the initial fine movement is detected by the vibration detecting means, the control means retreats for controlling the operation of the transport apparatus so as to put the transport apparatus in a preset retreat state. An article configured to execute a stop process for controlling the operation of the transfer device so as to stop the transfer device when the main motion is detected by the vibration detecting means. Processing equipment. A power supply intermittent means capable of intermittently switching the supply of electric power to the transport device;
The article processing facility according to claim 1, wherein the control unit is configured to control the power supply interrupting unit so as to cut off power to the transfer device in the stop process. The transport device is configured by a stacker crane that travels along an article storage shelf,
The said control means is comprised so that the operation | movement of the said stacker crane may be controlled so that the said stacker crane may be set to the preset reference state as the said retracted state in the said retracting process. Article processing equipment.   The article processing apparatus according to claim 3, wherein the reference state is set as a state in which the stacker crane is located at a retreat position provided outside the existence range of the article storage shelf in the traveling direction of the stacker crane. The transport device is constituted by a transport conveyor that transports the placed article,
The control means controls the operation of the transport conveyor in the retreat process so that the retreat state is a low speed operation state in which the transport speed of the transport conveyor is a low speed transport speed that is lower than a normal transport speed. The article processing facility according to claim 1 or 2, wherein

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