A rescue system and control method suitable for a two-way goods shelf box shuttle vehicle

Abstract

The application discloses a rescue system and control method suitable for a two-way piece box shuttle vehicle of a goods shelf, and the system comprises a goods shelf with at least two layers in the vertical direction and at least one lane in the horizontal direction, a layer-changing elevator and a transfer track, and further comprises: a rescue vehicle used for dragging a fault multi-layer shuttle vehicle to move along the multi-layer track, unlocking the fault multi-layer shuttle vehicle brake and detecting the fork position of the fault multi-layer shuttle vehicle; a direct transfer track used for transferring the multi-layer shuttle vehicle and the rescue vehicle to move along a direct transfer track perpendicular to the lane direction to a maintenance work station; and the maintenance work station is used for receiving the fault multi-layer shuttle vehicle and waiting for manual maintenance. The layer-changing elevator transfer platform can move up and down in the vertical direction and is used for lifting the fault multi-layer shuttle vehicle and the rescue vehicle from the goods shelf to the ground, entering a maintenance passage and reaching the maintenance work station. The rescue vehicle automatically drags the fault multi-layer shuttle vehicle to the end of the track, and the fault multi-layer shuttle vehicle is lifted to the ground by the layer-changing elevator, so that the inspection and maintenance do not need to be performed in the lane or at the end of the lane.

Description

Technical Field

[0001] This invention relates to the field of transportation equipment technology for logistics warehousing systems, and specifically to a rescue system and control method for a two-way shuttle car carrying parcels on a shelf. Background Technology

[0002] Multi-level shuttle systems typically consist of multiple multi-level shuttles running on tracks on each level of the racking aisles. The aisle width is usually between 800mm and 1400mm, and the spacing between levels is between 300mm and 800mm, resulting in limited operating space. Multi-level shuttle systems can have up to 30-40 rack levels. As the number of racking aisles increases with demand and site size, the number of multi-level shuttles also increases, leading to a higher frequency of malfunctions. Troubleshooting multi-level shuttle system malfunctions requires personnel to enter the aisles to inspect the fault, analyze the cause, and use appropriate tools for repairs. A malfunction can significantly delay the operation of all multi-level shuttles on the affected level. Furthermore, the high-altitude and confined environment of racking operations makes maintenance of multi-level shuttles challenging due to poor lighting and difficulty in carrying tools, resulting in complex and unsafe maintenance procedures.

[0003] The most common type of rescue vehicle on the market is a fully manual, manually operated vehicle with relatively simple functions. It can be driven forward and backward by hand-cranking a handle, and the vehicle is surrounded by a frame to protect the personnel standing inside. There is a hook at the front of the vehicle that can be manually attached to a multi-level shuttle car to tow it back to the end. However, this solution has significant limitations, requiring a dedicated maintenance area at the end of the track for maintenance and placement of maintenance trolleys. Summary of the Invention

[0004] The purpose of this invention is to provide a rescue system and control method for a two-way component box shuttle car on a shelving unit, which automatically drags the faulty multi-layer shuttle car to the end of the track, then lifts it to the ground via a layer-changing elevator, and then drags it out of the warehouse area, eliminating the need for inspection and maintenance in the aisle or at the end of the aisle.

[0005] The technical solution of the present invention is as follows:

[0006] A rescue system for a two-way rack-mounted box shuttle includes at least two vertically stacked racks with at least one horizontal aisle, a layer-changing elevator, and a transfer track. The system is characterized by further comprising:

[0007] The rescue vehicle is used to tow a malfunctioning multi-level shuttle car along the multi-track, unlock the brake of the malfunctioning multi-level shuttle car, and detect the position of the forks of the malfunctioning multi-level shuttle car.

[0008] Transfer straight through, moving vertically along the multi-level shuttle car track on the shelf, used to transfer multi-level shuttle cars and rescue vehicles to the maintenance work position along the straight through track perpendicular to the aisle direction;

[0009] The maintenance station is used to receive faulty multi-level shuttle cars and wait for manual inspection. The maintenance station is equipped with a manual transfer track, which allows manual operation to move half of the station carrying the rescue car to another station and dock with the track. The rescue car can be transferred directly from the manual transfer track and re-enter the warehouse area to rescue the faulty multi-level shuttle car.

[0010] The transfer platform of the layer-changing elevator can move up and down in the vertical direction to lift and lower the faulty multi-layer shuttle car and rescue vehicle from the shelf to the ground and into the maintenance channel to reach the maintenance station.

[0011] Furthermore, a hook fork bracket is provided on the lower front part of the rescue vehicle frame, and at least two hook fork motors are connected to the end of the hook fork bracket. The rotation axis of the hook fork is parallel to the direction of travel of the rescue vehicle. Copper plates are installed on the hook fork motor hook forks, and the copper plate connection circuit can provide a suitable small current when appropriate. At least two photoelectric switches are provided above the running wheel supports of the rescue vehicle.

[0012] Furthermore, the rescue vehicle is equipped with a laser rangefinder, a positioning device, a battery, and a communication device on its frame, and a battery charging contactor is also installed under the frame of the rescue vehicle.

[0013] Furthermore, the rescue vehicle is also equipped with a buffer and a camera assembly with a gimbal on its frame. The buffer is installed at the front of the rescue vehicle, and the camera assembly is mounted on the frame via a bracket.

[0014] Furthermore, the multi-level shuttle car is equipped with a hook fork device, which is connected to the hook fork of the rescue vehicle to withstand the hook fork drag force. The hook fork device is equipped with a contact block. When the contact block connection line receives a small current, it can unlock the brake of the multi-level shuttle car travel system. When the copper plate on the hook fork of the rescue vehicle contacts the contact block on the hook fork device of the multi-level shuttle car, the rescue vehicle can generate a small current, and the multi-level shuttle car travel system unlocks the brake.

[0015] Furthermore, a docking buffer device is provided at the docking point of the floor-changing hoist, the transfer track, the transfer track, and the maintenance station.

[0016] The present invention also includes a control method for a rescue system suitable for a two-way rack-mounted box shuttle, the method comprising the following steps:

[0017] When a multi-level shuttle car malfunctions and needs repair, the rescue vehicle will travel through the transfer track, transfer rail, and floor-changing elevator to the floor level where the malfunctioning multi-level shuttle car is located, and will reach the vicinity of the malfunctioning multi-level shuttle car from the side closest to the floor-changing elevator.

[0018] The rescue vehicle uses laser rangefinder to detect the distance to the multi-level shuttle. When it reaches the distance, the maintenance personnel can remotely control the camera to observe through the pan-tilt camera. Two photoelectric switches are used to check whether the forks are in the middle position. If the forks are not in the middle position, the malfunctioning multi-level shuttle can be ordered to move the forks. If the forks cannot be moved, wait for personnel to handle the situation.

[0019] When the forks are in the neutral position, the two hooks on the hook fork bracket rotate, and at the same time, a continuous unlockable brake current is applied to the copper plates on the two hooks. The rescue vehicle moves slowly until the copper plates on the two hooks make good contact with the contact blocks on the hook fork device of the multi-level shuttle. At this time, the current will unlock the brake of the faulty multi-level shuttle, and the rescue vehicle can continue to move to drag the faulty multi-level shuttle in one direction.

[0020] Furthermore, it also includes the following steps:

[0021] At the docking points of the shelving and the layer-changing elevator, the layer-changing elevator and the transfer rail, the transfer rail and the transfer straight track, and the transfer straight track and the maintenance station rail, there are docking buffer devices with the same structure to connect the fixed rails with the rails on the moving equipment transfer platform. During docking, the transfer platform moves, the limit protection device on the transfer platform automatically moves away, and the limit buffer protection device on the docking buffer device is pushed open. The rails that originally had a large gap are now docked, and the multi-level shuttle can pass smoothly. Afterward, the transfer platform resets, and the limit protection device on the transfer platform automatically closes, and the limit buffer protection device on the docking buffer device also closes.

[0022] The rescue vehicle tows the multi-level shuttle car to the floor-changing elevator. The floor-changing elevator receives the task and picks up the equipment. The photoelectric switch used for floor-changing preparation is triggered. The transfer platform of the floor-changing elevator runs, triggering the docking buffer device. The track docking occurs. The limit buffer protection device and the limit protection device are open. The rescue vehicle tows the faulty multi-level shuttle car into the transfer platform. After the photoelectric switch on the transfer platform detects that the equipment is in place, the docking buffer device closes. The transfer platform is then raised and lowered to the transfer track.

[0023] Furthermore, it also includes the following steps:

[0024] The loading platform of the layer-changing hoist docks with the transfer track. The rescue vehicle drags the multi-level shuttle car to move on the transfer track. After receiving the task, the transfer vehicle picks up the equipment. When the transfer vehicle arrives, it runs on the transfer platform, which triggers the docking buffer device. When the track docks, the limit buffer protection device and the limit protection device are opened. The rescue vehicle drags the faulty multi-level shuttle car into the transfer platform.

[0025] After the photoelectric switch on the transfer platform detects that the equipment is in place, the docking buffer device closes, and the transfer vehicle runs directly to the maintenance station. The transfer track docks with the maintenance station, and the rescue vehicle drags the multi-layer shuttle car to the maintenance station. The transfer docking buffer device closes, and the transfer vehicle can leave to perform other tasks.

[0026] At the maintenance station, the rescue vehicle moves in the opposite direction a certain distance, causing the copper plate on the hook motor to disengage from the contact device on the multi-level shuttle car. The faulty multi-level shuttle car's brake is locked, the travel system is locked, and the hook motor rotates to a position where it is disengaged from the contact device and will not touch the bottom of the multi-level shuttle car. The rescue vehicle moves forward to the transferable maintenance station section, while the faulty multi-level shuttle car remains in place.

[0027] The manual transfer track moves the maintenance station section to another maintenance station, allowing the rescue vehicle to drive to the charging station or have the transfer vehicle pass through directly to pick up the equipment for the next task.

[0028] Furthermore, when the rescue vehicle fails to rescue the malfunctioning multi-story shuttle, it waits at the charging station in the maintenance bay area.

[0029] Compared with existing technologies, the advantages of this invention are:

[0030] 1. A rescue system and control method for a two-way component box shuttle car on a rack, which has a reasonable structure, reliable use, and high safety. It automatically drags the faulty multi-level shuttle car to the end of the track, then lifts it to the ground via a layer-changing lifting machine, and then drags it out of the warehouse area, reducing the number of times the warehouse area needs to be entered to handle the fault, and eliminating the need to stop the operation of the corresponding multi-level shuttle cars on the same maintenance layer.

[0031] 2. A rescue system and control method for a two-way component box shuttle car on a rack, which automatically drags a faulty multi-level shuttle car to the end of the track, then lifts it to the ground via a layer-changing lifting machine, and then drags it out of the warehouse area; it can initially detect the status of the forks of the multi-level shuttle car to prevent damage to the forks during dragging; it does not require maintenance personnel to enter the warehouse area, and does not require pausing the entire maintenance layer;

[0032] 3. A rescue system and control method for a two-way component box shuttle car on a shelving unit, which uses a rotating hook fork to hook the multi-level shuttle car to be repaired. The hook fork can hook when it is rotated out and cannot hook when it is rotated in. The hooking can be done automatically without human operation. The hooking position on the multi-level shuttle car has a spring-loaded support. There are two cable contact points connected to the support and the hook fork of the multi-level shuttle car. After corresponding contact, the brake of the faulty multi-level shuttle car can be unlocked. The rescue vehicle has sensors that can preliminarily determine whether the faulty multi-level shuttle car can be moved out of the warehouse without human intervention. Attached Figure Description

[0033] Figure 1 This is a front view schematic diagram of a rescue system structure suitable for a two-way shuttle car carrying parcels on a shelf.

[0034] Figure 2 This is a top view schematic diagram of a rescue system structure suitable for a two-way shuttle car carrying parcels on a shelf.

[0035] Figure 3 This is a schematic diagram of the docking buffer device.

[0036] Attached label: 1-Rescue vehicle, 2-Multi-level shuttle, 3-Shelf, 4-Layer changing hoist, 5-Transfer track, 6-Transfer through track, 7-Transfer through, 8-Maintenance station, 9-Transferable maintenance station, 10-Manual transfer track;

[0037] 101-Railway, 102-Shaft and buffer, 103-Push rod and push sleeve. Detailed Implementation

[0038] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0040] Please see Figure 1-3 1. A rescue system for a two-way rack-mounted box shuttle, comprising a rack 3 with at least two vertical layers and at least one horizontal aisle, a layer-changing elevator 4, and a transfer track 5, further comprising:

[0041] Rescue vehicle 1 is used to tow the malfunctioning multi-level shuttle 2 along the multi-track, unlock the brake of the malfunctioning multi-level shuttle, and detect the position of the forks of the malfunctioning multi-level shuttle.

[0042] The transfer straight track 7 moves vertically along the multi-level shuttle 2 track on the shelf, and is used to transfer the multi-level shuttle 2 and the rescue vehicle 1 along the straight track perpendicular to the aisle to the maintenance station 8.

[0043] Maintenance station 8 is used to receive the faulty multi-level shuttle car 2 and wait for manual inspection. Maintenance station 8 is equipped with a manual transfer track 10, which can be manually operated to move half of the station carrying the rescue car to another station and connect with the track. The rescue car 1 can be transferred from the manual transfer track 10 via the transfer straight through 7 and re-enter the warehouse area to rescue the faulty multi-level shuttle car 2.

[0044] The transfer platform of the layer-changing elevator 4 can move up and down in the vertical direction to lift the faulty multi-layer shuttle car 2 and rescue car 1 from the shelf to the ground and enter the maintenance channel to reach the maintenance station 8.

[0045] A hook fork bracket is installed on the lower front of the frame of rescue vehicle 1. At least two hook fork motors are connected to the end of the hook fork bracket. The rotation axis of the hook fork is parallel to the direction of travel of the rescue vehicle. Copper plates are installed on the hook fork motor hook fork. The copper plate connection line can provide a suitable small current when appropriate. At least two photoelectric switches are installed above the running wheel support of rescue vehicle 1.

[0046] The rescue vehicle 1 is also equipped with a laser rangefinder, a positioning device, a battery, and a communication device on its frame, and a battery charging contactor is also installed under the frame of the rescue vehicle.

[0047] The rescue vehicle 1 is also equipped with a buffer and a camera assembly with a gimbal on its frame. The buffer is installed at the front of the rescue vehicle, and the camera assembly is mounted on the frame via a bracket.

[0048] The multi-level shuttle 2 is equipped with a hook fork device, which is connected to the hook fork of the rescue vehicle to withstand the hook fork drag force. The hook fork device is equipped with a contact block. When the contact block connection line receives a small current, it can unlock the brake of the multi-level shuttle travel system. When the copper plate on the hook fork of the rescue vehicle 1 contacts the contact block on the hook fork device of the multi-level shuttle 2, the rescue vehicle 1 can generate a small current, and the multi-level shuttle travel system unlocks the brake.

[0049] A docking buffer device is provided at the junction of the floor-changing elevator 4, the transfer track 6, the transfer track 5 and the maintenance station 8.

[0050] The present invention also includes a control method for a rescue system suitable for a two-way rack-mounted box shuttle, the method comprising the following steps:

[0051] When the multi-level shuttle car 2 malfunctions and needs to be repaired, the rescue vehicle 1 goes through the transfer track 7, transfer track 5, and floor-changing elevator 4 to the floor where the malfunctioning multi-level shuttle car 2 is located, and reaches the vicinity of the malfunctioning multi-level shuttle car from the side closest to the floor-changing elevator 4.

[0052] The rescue vehicle 1 uses laser rangefinder to detect the distance to the multi-level shuttle 2. When it reaches the distance, the maintenance personnel can remotely control the camera to observe through the camera with a pan-tilt head. Two photoelectric switches are used to detect whether the forks are in the middle position. If the forks are not in the middle position, the faulty multi-level shuttle 2 can be ordered to move the forks. If the forks cannot be moved, wait for personnel to handle the situation.

[0053] When the forks are in the neutral position, the two hooks on the hook fork bracket rotate, and at the same time, the copper plates on the two hooks are supplied with a continuous unlockable brake current. The rescue vehicle 1 moves slowly until the copper plates on the two hooks make good contact with the contact blocks on the hook fork device of the multi-level shuttle 2. At this time, the current will unlock the brake of the faulty multi-level shuttle, and the rescue vehicle 1 can continue to move to drag the faulty multi-level shuttle to move in one direction.

[0054] It also includes the following steps:

[0055] At the docking points of shelf 3 and layer-changing elevator 4, layer-changing elevator 4 and transfer rail 5, transfer rail 5 and transfer straight rail 6, and transfer straight rail 6 and maintenance station 8, there are docking buffer devices with the same structure to connect the fixed rails with the rails on the moving equipment transfer platform. During docking, the transfer platform moves, the limit protection device on the transfer platform automatically moves away, and the limit buffer protection device on the docking buffer device is pushed open. The rails that originally had a large gap have now been docked, and the multi-layer shuttle 2 can pass smoothly. Afterward, the transfer platform resets, and the limit protection device on the transfer platform automatically closes, and the limit buffer protection device on the docking buffer device also closes.

[0056] Rescue vehicle 1 tows multi-level shuttle 2 to the floor-changing elevator 4. The floor-changing elevator 4 receives the task to pick up the equipment. The photoelectric switch used for floor-changing preparation is triggered. The transfer platform of the floor-changing elevator 4 runs, triggering the docking buffer device. The track docks. The limit buffer protection device and the limit protection device are open. Rescue vehicle 1 tows the faulty multi-level shuttle 2 into the transfer platform. After the photoelectric switch on the transfer platform detects that the equipment is in place, the docking buffer device closes. The transfer platform is raised and lowered to the transfer track.

[0057] It also includes the following steps:

[0058] The loading platform of the layer-changing elevator 4 docks with the transfer track 5. The rescue vehicle 1 drags the multi-level shuttle 2 to move on the transfer track. After receiving the task, the transfer straight-through 7 picks up the equipment. When the transfer straight-through 7 arrives, it runs on the transfer platform, which triggers the docking buffer device. When the track docks, the limit buffer protection device and the limit protection device are opened. The rescue vehicle 1 drags the faulty multi-level shuttle 2 into the transfer platform of the transfer straight-through 7.

[0059] After the photoelectric switch on the transfer platform detects that the equipment is in place, the docking buffer device closes, and the transfer vehicle runs directly to the maintenance station. The transfer track 6 docks with the maintenance station 8. The rescue vehicle 1 drags the multi-layer shuttle 2 to the maintenance station. The transfer track 7 docking buffer device closes, and the transfer track 7 can leave to perform other tasks.

[0060] At maintenance station 8, rescue vehicle 1 runs in reverse a certain distance, causing the copper plate on the hook motor to disengage from the contact device on the multi-level shuttle 2. The faulty multi-level shuttle 2 is then locked by its brake, and the travel system is locked. The hook motor rotates to a position where it is disengaged from the contact device and will not touch the bottom of the multi-level shuttle 2. Rescue vehicle 1 moves forward to the transferable maintenance station 9, while the faulty multi-level shuttle 2 remains in place.

[0061] The manual transfer track 10 moves the maintenance station 8 to another maintenance station. The rescue vehicle 1 can then drive to the charging station or have the transfer vehicle 7 pick up the vehicle for the next task.

[0062] When the rescue vehicle 1 fails to rescue the malfunctioning multi-story shuttle 2, it waits at the charging station in the maintenance bay 8 area.

[0063] The docking buffer device is Figure 3 As shown, the docking buffer device includes a track 101, on which a rotating shaft and buffer 102, and a push rod and push sleeve 103 are arranged. The limiting buffer protection device is not shown in the figure, but it refers to the buffer in the rotating shaft and buffer 102; the limiting protection device is not shown in the figure, but it is located on the transfer platform of the floor changing hoist and the transfer platform directly passes through the transfer platform.

[0064] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed and specific, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A rescue system for a two-way rack-mounted box shuttle, comprising at least two vertically layered racks with at least one horizontal aisle (3), a layer-changing elevator (4), and a transfer track (5), characterized in that, Also includes: The rescue vehicle (1) is used to tow the faulty multi-level shuttle (2) along the multi-track, unlock the brake of the faulty multi-level shuttle, and detect the position of the forks of the faulty multi-level shuttle. The transfer is carried through (7), moving vertically along the multi-level shuttle (2) track on the shelf, to transfer the multi-level shuttle (2) and the rescue vehicle (1) along the straight track perpendicular to the aisle to the maintenance station (8); The maintenance station (8) is used to receive the faulty multi-level shuttle car (2) and wait for manual inspection. The maintenance station (8) is equipped with a manual transfer track (10), which allows manual operation to move the half-section of the station carrying the rescue car to another station and connect with the track. The rescue car (1) can be transferred from the manual transfer track (10) by the transfer straight through (7) and re-enter the warehouse area to rescue the faulty multi-level shuttle car (2). The transfer platform of the floor-changing elevator (4) can move up and down in the vertical direction to lift the faulty multi-story shuttle (2) and rescue vehicle (1) from the shelf to the ground and enter the maintenance channel to reach the maintenance station (8). The rescue vehicle (1) has a hook fork bracket at the lower front of the frame. At least two hook fork motors are connected to the end of the hook fork bracket. The rotation axis of the hook fork is parallel to the direction of travel of the rescue vehicle. Copper plates are installed on the hook fork, and the copper plate connection line can provide current. At least two photoelectric switches are installed above the running wheel support of the rescue vehicle (1). The multi-level shuttle car (2) is equipped with a hook fork device. The hook fork device is connected to the hook fork of the rescue car and bears the hook fork drag force. The hook fork device is equipped with a contact block. When the contact block connection line receives current, it can unlock the brake of the multi-level shuttle car running system. When the copper plate on the hook fork of the rescue car (1) contacts the contact block on the hook fork device of the multi-level shuttle car (2), the rescue car (1) can generate a current, and the multi-level shuttle car running system unlocks the brake. The same docking buffer device is provided at the docking points of the shelf (3) and the layer changing elevator (4), the docking points of the layer changing elevator (4) and the transfer track (5), the docking points of the transfer track (5) and the transfer straight track (6), and the docking points of the transfer straight track (6) and the maintenance station (8). When the multi-level shuttle car (2) malfunctions and needs repair, the rescue vehicle (1) passes through the transfer track (7), transfer track (5), and floor-changing elevator (4) to reach the floor where the malfunctioning multi-level shuttle car (2) is located. It then approaches the malfunctioning multi-level shuttle car from the side closest to the floor-changing elevator (4). Two photoelectric switches are used to detect whether the forks are in the middle position. When the forks are in the middle position, the two hooks on the hook fork bracket rotate, and the copper plates on the two hooks are given a continuous current that can unlock the brake. The rescue vehicle (1) moves slowly until the copper plates on the two hooks make good contact with the contact blocks on the hook fork device of the multi-level shuttle car (2). The current will unlock the brake of the malfunctioning multi-level shuttle car. The rescue vehicle (1) can continue to move and drag the malfunctioning multi-level shuttle car to move in one direction.

2. The rescue system for a two-way shuttle cart carrying parcels on a shelf, as described in claim 1, is characterized in that, The rescue vehicle (1) is also equipped with a laser rangefinder, a positioning device, a battery and a communication device on its frame, and a battery charging contactor is also installed under the frame of the rescue vehicle.

3. A rescue system for a two-way shuttle cart carrying parcels on a shelf, as described in claim 2, is characterized in that, The rescue vehicle (1) is also equipped with a buffer and a camera assembly with a gimbal on its frame. The buffer is installed at the front of the rescue vehicle, and the camera assembly is mounted on the frame via a bracket.

4. A control method for a rescue system suitable for a two-way shuttle car carrying parcels on a shelving unit, characterized in that, Controlling a rescue system for a two-way rack-mounted compartment shuttle as described in claim 3 includes the following steps: When the multi-level shuttle car (2) malfunctions and needs to be repaired, the rescue vehicle (1) passes through the transfer track (7), transfer track (5), and floor-changing elevator (4) to reach the floor where the malfunctioning multi-level shuttle car (2) is located, and arrives near the malfunctioning multi-level shuttle car from the side closest to the floor-changing elevator (4). The rescue vehicle (1) detects the distance of the multi-level shuttle (2) through a laser rangefinder. When it reaches the distance, the maintenance personnel can control the camera remotely to observe through the camera with a gimbal. Two photoelectric switches are used to detect whether the forks are in the middle position. If the forks are not in the middle position, the faulty multi-level shuttle (2) can be ordered to move the forks. If the forks cannot be moved, wait for personnel to handle the situation. When the forks are in the middle position, the two hooks on the hook fork bracket rotate, and at the same time, the copper plates on the two hooks are given a continuous current that can unlock the brake. The rescue vehicle (1) moves slowly until the copper plates on the two hooks make good contact with the contact block on the hook fork device of the multi-level shuttle (2). The current will unlock the brake of the faulty multi-level shuttle. The rescue vehicle (1) can continue to move and drag the faulty multi-level shuttle to move in one direction.

5. A rescue system control method for a two-way component box shuttle car on a shelf, as described in claim 4, is characterized in that... It also includes the following steps: At the docking points of the shelving (3) and the layer-changing elevator (4), the layer-changing elevator (4) and the transfer track (5), the transfer track (5) and the transfer straight track (6), and the transfer straight track (6) and the maintenance station (8), there are docking buffer devices with the same structure, so that the fixed track and the track on the moving equipment transfer platform are docked. When docking, the transfer platform moves, the limit protection device on the transfer platform is automatically moved away, the limit buffer protection device on the docking buffer device is pushed open, the track with a large gap has been docked, the multi-layer shuttle (2) can pass smoothly, and then the transfer platform is reset. After the transfer platform is reset, the limit protection device on the transfer platform will automatically close, and the limit buffer protection device on the docking buffer device will close. The rescue vehicle (1) drags the multi-level shuttle car (2) to the floor-changing elevator (4). The floor-changing elevator (4) receives the task to pick up the equipment. The photoelectric switch used for floor-changing preparation is in the triggered state. The transfer platform of the floor-changing elevator (4) runs, triggering the docking buffer device. The track docks. The limit buffer protection device and the limit protection device are opened. The rescue vehicle (1) drags the faulty multi-level shuttle car (2) into the transfer platform. After the photoelectric switch on the transfer platform detects that the equipment is in place, the docking buffer device closes. The transfer platform is raised and lowered to the transfer track.

6. A rescue system control method for a two-way component box shuttle car on a shelf, as described in claim 5, is characterized in that... It also includes the following steps: The transfer platform of the floor-changing hoist (4) is connected to the transfer track (5). The rescue vehicle (1) drags the multi-level shuttle car (2) to move on the transfer track. After receiving the task, the transfer straight through (7) picks up the equipment. When the transfer straight through (7) arrives, the transfer platform of the transfer straight through (7) runs, which triggers the docking buffer device. When the track is docked, the limit buffer protection device and the limit protection device are opened. The rescue vehicle (1) drags the faulty multi-level shuttle car (2) into the transfer platform of the transfer straight through (7). After the photoelectric switch on the transfer platform detects that the equipment is in place, the docking buffer device closes and the transfer vehicle runs directly to the maintenance station. The transfer track (6) docks with the maintenance station (8). The rescue vehicle (1) drags the multi-layer shuttle car (2) to the maintenance station. The transfer track (7) docking buffer device closes and the transfer track (7) can leave to perform other tasks. At the maintenance station (8), the rescue vehicle (1) runs in the opposite direction for a certain distance, causing the copper plate on the hook to disengage from the contact device on the multi-level shuttle (2). The faulty multi-level shuttle (2) locks its brake and the running system is locked. The hook motor rotates to a position where it is disengaged from the contact device and will not touch the bottom of the multi-level shuttle (2). The rescue vehicle (1) moves forward to the section where the maintenance station can be transferred, while the faulty multi-level shuttle (2) remains in place. The manual transfer track (10) moves the maintenance station (8) to another maintenance station, and the rescue vehicle (1) can drive to the charging station or allow the transfer vehicle (7) to pick up the vehicle for the next task.

7. A rescue system control method for a two-way component box shuttle car on a shelf, as described in any one of claims 4-6, characterized in that, When the rescue vehicle (1) fails to rescue the faulty multi-story shuttle (2), it waits at the charging station in the maintenance bay (8) area.

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