OHT vehicle fault rescue device and rescue method

Abstract

The invention discloses an OHT vehicle fault rescue device which comprises a rescue traction part and a rescue electrical part. The rescue traction part comprises a traction driving device and a traction connecting device; the rescue electrical part comprises a rescue box and a rescue cable, and the OHT vehicle fault rescue method comprises the steps that 1, an OHT vehicle fault alarm is sent out; step 2, loading a rescue electric part on the rescue traction part; 3, the rescue traction part moves to the position of the fault OHT vehicle; 4, a rescue traction part and a rescue electrical part are connected with the fault OHT vehicle; step 5, determining that the fault OHT vehicle is in a free state; according to the method, the rescue box is arranged, a series of operations such as brake releasing, reversing and dragging are automatically or manually carried out on the fault OHT vehicle through the rescue box, the time cost and complexity for rescuing the fault OHT vehicle are reduced, and the rescue efficiency is improved. Therefore, traffic jam caused by long-time stop of the fault OHT vehicle on the rail line is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead hoist transfer (OHT) vehicles, and particularly to an OHT vehicle fault rescue device and a rescue method. Background Art

[0002] The production and manufacturing of semiconductor products involve several processing procedures, and stable and efficient wafer transfer is required between each procedure. Among them, the front-opening unified pod (FOUP) is usually used as a carrier for transmitting and storing wafers. For such FOUPs, long-distance, heavy-weight, and high-frequency transfer operations often rely on overhead hoist transfer (OHT) vehicles to complete. Due to the high-intensity and uninterrupted working state of OHT vehicles, it is inevitable that various faults will cause them to be unable to reset during the transfer process and stop running on the track. This will greatly hinder the normal transfer tasks of the surrounding OHT vehicles, resulting in task delays, and there are also risks of wafer breakage and threats to personnel safety. This greatly reduces the production capacity of semiconductor factories and makes it difficult to achieve fast and stable material transfer tasks.

[0003] When an OHT vehicle fails and cannot reset to drive normally, multiple workers need to cooperate according to the movement of the faulty OHT vehicle, connect an external brake release power supply, and manually push or tow the faulty OHT vehicle to the maintenance station. However, the layout of semiconductor factories is often complex and there are many devices. It is difficult to carry out manual rescue work in many areas. At the same time, the method of manually pushing or towing a faulty OHT vehicle has a risk that the faulty OHT vehicle cannot change direction in time in the track turning area, resulting in derailment of the overhead crane or collision with other overhead cranes or track mechanisms. In addition, when the faulty OHT vehicle is far from the maintenance station, workers need to carry out long-term rescue operations. Occupying the track to move the faulty OHT vehicle will affect the normal work of the surrounding OHT vehicles, thus greatly reducing the working efficiency of the entire system in the semiconductor workshop. Summary of the Invention

[0004] The purpose of the present invention is to provide an OHT vehicle fault rescue device and a rescue method to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An OHT vehicle fault rescue device includes a rescue traction part and a rescue electrical part;

[0007] The rescue traction part includes a traction driving device and a traction connection device for connecting the traction driving device with the faulty vehicle to be rescued;

[0008] The rescue electrical part includes a rescue box and a rescue cable for connecting the rescue box to the faulty vehicle to be rescued.

[0009] As a further solution of the present invention: The rescue box includes a box body and a control interface provided on one side of the box body. The control interface is detachably connected to the rescue cable. A controller is provided inside the box body of the rescue box, and a power indicator light, a left turn button, a brake release knob, and a right turn button are provided on the box body.

[0010] As a further solution of the present invention: A charging interface is provided on one side of the box body of the rescue box, and a connecting protrusion and a sensor slave station are provided on the upper end of the box body of the rescue box. The connecting protrusion is a T-shaped structure.

[0011] As a further solution of the present invention: The rescue cable includes a multi-core cable and a left electrical connector and a right electrical connector located at both ends of the multi-core cable.

[0012] As a further solution of the present invention: The traction connection device includes a suspension rope and a left hook and a right hook located at both ends of the suspension rope.

[0013] As a further solution of the present invention: The traction drive device is an OHT vehicle. The upper end of the OHT vehicle is slidably connected to a track. The upper end of the OHT vehicle is provided with a first traveling part and a first reversing part. First front-side hanging rings and first rear-side hanging rings are respectively provided on the front and rear sides of the OHT vehicle. A clamping part for grasping the rescue box is provided in the middle of the OHT vehicle. An obstacle sensor is provided on one side of the OHT vehicle close to the faulty vehicle to be rescued, and an external rescue interface is provided on the faulty vehicle to be rescued.

[0014] As a further solution of the present invention: The traction drive device is a rescue cart. The rescue cart includes a vehicle body and a cart traveling part provided below the vehicle body. A cart handle is provided on one side of the vehicle body. An inclined platform for placing the rescue box is provided on the upper end of the vehicle body. A top hanging ring connected to the traction connection device is provided at the top of the vehicle body.

[0015] An OHT vehicle fault rescue method includes the following steps:

[0016] Step 1, the OHT control system issues an OHT vehicle fault alarm and provides the position information of the faulty OHT vehicle;

[0017] Step 2, after obtaining the information of the faulty OHT vehicle, the rescue traction part starts, and the rescue traction part moves to the position of the rescue electrical part and loads the rescue electrical part;

[0018] Step 3, the rescue traction part loads the rescue electrical part and moves to the position of the faulty OHT vehicle;

[0019] Step 4: The rescue traction unit is traction-connected to the faulty OHT vehicle, and the rescue electrical unit is electrically connected to the faulty OHT vehicle.

[0020] Step 5: Electrically control the faulty OHT vehicle through the rescue electrical unit and make the faulty OHT vehicle in a free state on the track.

[0021] Step 6: Traction-detach the faulty OHT vehicle through the rescue traction unit.

[0022] As a further solution of the present invention: The rescue traction unit adopts an OHT vehicle. In step 2, the OHT vehicle drives above the rescue electrical unit, and grabs the connection protrusion at the upper end of the rescue box through the clamping unit to complete the loading of the rescue box; in step 4, the OHT vehicle and the faulty OHT vehicle are traction-connected through the traction connection device, and the rescue box and the faulty OHT vehicle are electrically connected through the rescue cable; in step 5, open the rescue box, release the brake of the running part of the faulty OHT vehicle through the brake release knob, and the reversing part of the faulty OHT vehicle can be controlled to reverse to the left or right by manually pressing the right turn button or the left turn button, and the faulty OHT vehicle reaches a free state on the track.

[0023] As a further solution of the present invention: The rescue traction unit adopts a rescue trolley. In step 2, push the rescue trolley to the rescue box and place the rescue box on the inclined table of the rescue trolley; in step 4, the rescue trolley and the faulty OHT vehicle are traction-connected through the traction connection device, and the rescue box and the faulty OHT vehicle are electrically connected through the rescue cable; in step 5, open the rescue box, release the brake of the running part of the faulty OHT vehicle through the brake release knob, and the reversing part of the faulty OHT vehicle can be controlled to reverse to the left or right by manually pressing the right turn button or the left turn button, and the faulty OHT vehicle reaches a free state on the track.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. By setting up a rescue box in this application, a series of operations such as releasing the brake, reversing, and towing of the faulty OHT vehicle are completed automatically or manually through the rescue box, reducing the time cost and complexity of rescuing the faulty OHT vehicle, thereby avoiding traffic jams caused by the long-term stop of the faulty OHT vehicle on the track line.

[0026] 2. In this application, other OHT vehicles or rescue carts are used as traction devices. The traction connection of the faulty OHT vehicle is completed through the traction connection device, and the electrical connection of the faulty OHT vehicle is completed through the rescue box. Thus, the faulty OHT vehicle can be quickly towed away, reducing the towing difficulty, improving the towing efficiency, and avoiding production stagnation caused by OHT vehicle failures. Brief Description of the Drawings

[0027] Figure 1 Structural schematic diagram of the rescue device in Embodiment 1 of this application;

[0028] Figure 2 Schematic diagram of the traction connection state of the rescue device in Embodiment 1 of this application;

[0029] Figure 3 Schematic diagram of the electrical connection state of the rescue device in Embodiment 1 of this application;

[0030] Figure 4 Front view of the rescue box of this application;

[0031] Figure 5 Top view of the rescue box of this application;

[0032] Figure 6 Schematic diagram of the rescue state of the rescue device in Embodiment 1 of this application;

[0033] Figure 7 Schematic diagram of the rescue state of the rescue device in Embodiment 2 of this application;

[0034] Figure 8 Functional structural schematic diagram of the rescue state of the rescue device in Embodiment 1 of this application;

[0035] Figure 9 Functional structural schematic diagram of the rescue state of the rescue device in Embodiment 2 of this application;

[0036] Figure 10 Schematic diagram of the rescue process of the rescue device of this application;

[0037] In the figure: 10 - OHT vehicle, 11 - first running part, 12 - first reversing part, 13 - first front lifting ring, 14 - first rear lifting ring, 15 - gripping part, 16 - obstacle sensor, 20 - rescue box, 21 - control interface, 22 - charging interface, 23 - connecting protrusion, 24 - power indicator light, 25 - left turn button, 26 - brake release knob, 27 - right turn button, 28 - sensor slave station, 30 - wafer cassette, 40 - rescue cart, 41 - cart handle, 42 - top lifting ring, 43 - cart running part, 44 - tilting table, 50 - track, 60 - traction connection device, 61 - left hook, 62 - right hook, 63 - lifting rope, 70 - faulty OHT vehicle, 71 - second running part, 72 - second reversing part, 73 - second front lifting ring, 74 - second rear lifting ring, 75 - external rescue interface, 80 - rescue cable, 81 - left electrical connector, 82 - right electrical connector, 83 - multi - core cable, 90 - OCS system. Detailed implementation mode

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0039] Embodiment 1

[0040] Please refer to Figure 1-6 、 Figure 8 、 Figure 10 In the embodiment of the present invention, a rescue device for an OHT vehicle failure includes a rescue traction part and a rescue electrical part.

[0041] The rescue traction part includes a traction driving device and a traction connection device 60 for connecting the traction driving device with the faulty vehicle to be rescued. In this embodiment, the traction driving device is the OHT vehicle 10. The upper end of the OHT vehicle 10 is slidably connected to the track 50. The upper end of the OHT vehicle 10 is provided with a first running part 11 and a first reversing part 12. The front and rear sides of the OHT vehicle 10 are respectively provided with a first front lifting ring 13 and a first rear lifting ring 14. The middle part of the OHT vehicle 10 is provided with a gripping part 15 for grasping the rescue box 20. One side of the OHT vehicle 10 close to the faulty vehicle to be rescued is provided with an obstacle sensor 16. The faulty vehicle to be rescued is provided with an external rescue interface.

[0042] In this embodiment, the rescue tractor uses the same OHT vehicle as the vehicle to be rescued. The OHT vehicle is equipped with a traveling part for the OHT vehicle to move forward and backward; a reversing part for the overhead crane to reverse to the left or right when turning; an obstacle sensor for detecting obstacles behind the OHT vehicle and the distance between the OHT vehicle and the obstacles; an E84 sensor master station for communicating with the rescue box, transmitting brake and reversing commands to the rescue box and receiving signals indicating whether the reversing part has reached the position; front and rear lifting rings for facilitating the rescue work of the OHT vehicle or the rescue cart by mechanical connection with the traction part when a failure occurs; a clamping part for clamping a front-opening wafer transfer box (FOUP) or the rescue box through the opening and closing action of the clamping jaws; and an external rescue interface for connecting a rescue cable when the OHT vehicle fails.

[0043] The rescue electrical part includes a rescue box 20 and a rescue cable 80 for connecting the rescue box 20 and the vehicle with a rescue failure. The rescue box 20 includes a box body and a control interface 21 provided on one side of the box body. The control interface 21 is detachably connected to the rescue cable 80. A controller is provided inside the box body of the rescue box 20, a power indicator 24, a left-turn button 25, a brake-release knob 26, and a right-turn button 27 are provided on the box body of the rescue box 20. A charging interface 22 is provided on one side of the box body of the rescue box 20, and a connection protrusion 23 and a sensor slave station 28 are provided at the upper end of the box body of the rescue box 20. The connection protrusion 23 has a T-shaped structure. The rescue cable 80 includes a multi-core cable 83 and left and right electrical connectors 81 and 82 located at both ends of the multi-core cable 83. The traction connection device 60 includes a lifting rope 63 and left and right hooks 61 and 62 located at both ends of the lifting rope 63.

[0044] In this embodiment, the connection protrusion is used to be clamped by the clamping part of the OHT vehicle; the rescue cable is used for electrically connecting the rescue box and the faulty OHT vehicle, with electrical connectors at both ends and a multi-core cable in the middle; the control interface is used to connect the rescue cable when rescuing the faulty OHT vehicle; the internal energy storage element is used to provide DC power to the rescue box; the charging interface is used to connect a dedicated charger to charge the internal energy storage element; the E84 sensor slave station is used for wireless communication with the OHT vehicle; the power indicator is used to display the power status of the rescue box; the reversing part driver is used to drive the reversing part of the faulty OHT vehicle; the brake-release knob is used to control the on / off of the power supply of the rescue box and the switch of the brake of the faulty OHT vehicle; the left-turn button is used for the staff to manually operate the faulty OHT vehicle to perform a left-turning action and transmit information indicating that the left turn has reached the position; the right-turn button is used for the staff to manually operate the faulty OHT vehicle to perform a right-turning action and transmit information indicating that the right turn has reached the position.

[0045] An OHT vehicle failure rescue method includes the following steps:

[0046] Step 1: The OHT control system (OCS) issues an OHT vehicle fault alarm and provides the location information of the faulty OHT vehicle.

[0047] Step 2: After obtaining the information of the faulty OHT vehicle, the rescue towing unit starts. The rescue towing unit moves to the position of the rescue electrical unit and loads the rescue electrical unit. The OHT vehicle drives above the rescue electrical unit and grabs the connecting protrusion at the upper end of the rescue box through the clamping unit to complete the loading of the rescue box.

[0048] Step 3: The rescue towing unit loads the rescue electrical unit and moves to the position of the faulty OHT vehicle.

[0049] Step 4: The OHT vehicle is traction-connected to the faulty OHT vehicle through the traction connection device 60, and the rescue box 20 is electrically connected to the faulty OHT vehicle through the rescue cable 80.

[0050] Step 5: Open the rescue box. Release the brake of the running part of the faulty OHT vehicle through the brake release knob. The commutation part of the faulty OHT vehicle can be controlled to commutate to the left or right by manually pressing the right turn button or the left turn button, and the faulty OHT vehicle reaches a free state on the track.

[0051] Step 6: Tractor the faulty OHT vehicle away through the rescue towing unit.

[0052] In this embodiment, the OHT vehicle 10 and the faulty OHT vehicle 70 are located on the track 50. The faulty OHT vehicle 70 has a non-resettable fault during the process of transporting the wafer cassette 30, resulting in the abnormal operation of the second running part 71 or the second commutation part 72 of the faulty OHT vehicle 70. The OCS system schedules the OHT vehicle 10 to drive on the track 50 to above the rescue box 20 through the cooperation of the first commutation part 12 and the first running part 11. After clamping the rescue box 20 through the clamping unit 15, it moves to the vicinity of the front side cover of the faulty OHT vehicle 70. The obstacle sensor 16 installed on the rear side cover of the OHT vehicle 10 detects the distance value from the faulty OHT vehicle 70 to control the stop position of the OHT vehicle 10 and waits for the staff to confirm the next operation.

[0053] The traction connection device 60 includes a left hook 61, a lifting rope 63, and a right hook 62. Both the left hook 61 and the right hook 62 are provided with anti-disengagement hook locks. When rescuing the faulty OHT vehicle 70, the left hook 61 and the right hook 62 of the traction connection device 60 are respectively mechanically connected to the second front-side lifting ring 73 of the faulty OHT vehicle 70 and the first rear-side lifting ring 14 of the OHT vehicle 10, and then the towing work of the OHT vehicle 10 on the faulty OHT vehicle 70 can be started.

[0054] The operation panel of the rescue box 20 with a portable structure includes a control interface 21, a brake release knob 26, a power indicator light 24, a left-turn button 25, a right-turn button 27, and a charging interface 22. After the control interface 21 is electrically connected to the faulty OHT vehicle 70 through the rescue cable 80, turning the brake release knob 26 clockwise can release the brake of the faulty OHT vehicle 70. At the same time, the power indicator light 24 lights up, and each component inside the rescue box 20 is powered on. The left-turn button 25 is a button with an LED light. After pressing the left-turn button 25, the second reversing part 72 of the faulty OHT vehicle 70 moves to the left. After the second reversing part 72 reaches the position, the LED light inside the left-turn button 25 lights up. The right-turn button 27 is also a button with an LED light. After pressing the button, the second reversing part 72 of the faulty OHT vehicle 70 moves to the right. After the second reversing part 72 reaches the position, the LED light inside the right-turn button 27 lights up. The charging interface 22 is used to connect an external charger to charge the rescue box 20.

[0055] The top of the rescue box 20 includes a connecting protrusion 23 and an E84 sensor slave station 28. Specifically, the connecting protrusion 23 has a T-shaped structure and can be clamped by the clamping part 15 of the OHT vehicle 10 and then move with the OHT vehicle 10. The E84 sensor slave station 28 is used for wireless communication between the rescue box 20 and the OHT vehicle 10. When rescuing the faulty OHT vehicle 70, after the left electrical connector 81 and the right electrical connector 82 of the rescue cable 80 are respectively connected to the external rescue interface 75 on the faulty OHT vehicle 70 and the control interface 21 of the rescue box 20, the rescue box 20 can control the faulty OHT vehicle 70 to perform brake release and steering operations. At the same time, when the second reversing part 72 of the faulty OHT vehicle 70 reaches the position, it will transmit a reversing-in-place signal to the rescue box 20.

[0056] When using the OHT vehicle 10 to rescue the faulty OHT vehicle 70, the OHT vehicle 10 moves above the rescue box 20. After using the clamping part 15 to clamp the rescue box 20, it moves to the vicinity of the front side cover of the faulty OHT vehicle 70 shown. By connecting the front side lifting ring 13 of the OHT vehicle 10 and the rear side lifting ring 74 of the faulty OHT vehicle 70 through the traction connection device 60 respectively, the traction operation can be carried out on the faulty OHT vehicle 70. Then, after electrically connecting the rescue box 20 and the faulty OHT vehicle 70 through the rescue cable 80 and opening the brake release knob 26, the internal energy storage element 29 of the rescue box 20 starts to supply power and performs the brake release operation on the second traveling part 71 of the faulty OHT vehicle 70; the E84 sensor master station 17 inside the OHT vehicle can communicate wirelessly with the E84 sensor slave station 28 on the top of the rescue box 20. The OHT vehicle 10 sends a commutation command through the wireless communication between the E84 sensors to control the internal commutation part driver of the rescue box 20 to perform the commutation operation on the second commutation part 72 of the faulty OHT vehicle 70. When the commutation sensor 76 detects that the second commutation part 72 reaches the extreme position, it will transmit the right turn in place signal or the left turn in place signal to the rescue box 20 through the rescue cable 80. At the same time, the rescue box 20 transmits the steering in place signal to the OHT vehicle 10 through the wireless communication between the E84 sensors.

[0057] As Figure 10 shown, in the semiconductor factory handling process, the OCS system 90 will send the scheduling instruction 1 and the scheduling instruction 2 to the OHT vehicle 10 and the faulty OHT vehicle 70 respectively according to the material handling plan. The OHT vehicle 10 can normally execute the handling instruction. The faulty OHT vehicle 70 makes an error after executing the handling instruction. The faulty OHT vehicle 70 will report the fault to the OCS system 90. After receiving the fault signal, the OCS system 90 immediately judges the fault handling method and searches for an OHT vehicle that can be used for rescue, and sends the scheduling instruction 3 to the OHT vehicle 10 to rescue the faulty OHT vehicle 70. The OHT vehicle 10 first moves above the rescue box and performs the clamping operation and then moves to the vicinity of the front side cover of the faulty OHT vehicle. After the staff confirms the position, they perform the operation of connecting the traction part and the rescue cable. The OHT vehicle 10 and the faulty OHT vehicle 70 start to perform signal interaction and execute the rescue towing task. After towing the faulty OHT vehicle 70 to the maintenance point, the OHT vehicle 10 will send a rescue completion report to the OCS system 90.

[0058] Embodiment 2

[0059] Please refer to Figure 3-4 、 Figure 7 、 Figure 9 In the embodiment of the present invention, an OHT vehicle fault rescue device includes a rescue traction part and a rescue electrical part.

[0060] The rescue towing section includes a towing drive device and a towing connection device 60 for connecting the towing drive device to the faulty vehicle to be rescued. In this embodiment, the towing drive device is a rescue cart 40. The rescue cart 40 includes a vehicle body and a cart walking section 43 provided below the vehicle body. A cart handle 41 is provided on one side of the vehicle body. An inclined platform 44 for placing the rescue box 20 is provided at the upper end of the vehicle body. A top lifting ring 42 connected to the towing connection device 60 is provided at the top of the vehicle body.

[0061] The rescue electrical section includes a rescue box 20 and a rescue cable 80 for connecting the rescue box 20 to the faulty vehicle to be rescued. The rescue box 20 includes a box body and a control interface 21 provided on one side of the box body. The control interface 21 is detachably connected to the rescue cable 80. A controller is provided inside the box body of the rescue box 20. A power indicator light 24, a left turn button 25, a brake release knob 26, and a right turn button 27 are provided on the box body. A charging interface 22 is provided on one side of the box body of the rescue box 20. A connection protrusion 23 and a sensor slave station 28 are provided at the upper end of the box body of the rescue box 20. The connection protrusion 23 is of a T-shaped structure. The rescue cable 80 includes a multi-core cable 83 and left and right electrical connectors 81 and 82 located at both ends of the multi-core cable 83. The towing connection device 60 includes a lifting rope 63 and left and right hooks 61 and 62 located at both ends of the lifting rope 63.

[0062] An OHT vehicle fault rescue method includes the following steps:

[0063] Step 1, the OHT control system (OCS, OHT Control System) issues an OHT vehicle fault alarm and provides the position information of the faulty OHT vehicle;

[0064] Step 2, after obtaining the information of the faulty OHT vehicle, the rescue towing section starts. The rescue towing section moves to the position of the rescue electrical section and loads the rescue electrical section, pushes the rescue cart to the rescue box, and places the rescue box on the inclined platform of the rescue cart;

[0065] Step 3, the rescue towing section loads the rescue electrical section and moves to the position of the faulty OHT vehicle;

[0066] Step 4, the rescue cart is towed and connected to the faulty OHT vehicle through the towing connection device 60, and the rescue box 20 is electrically connected to the faulty OHT vehicle through the rescue cable 80;

[0067] Step 5, open the rescue box, release the brake of the walking section of the faulty OHT vehicle through the brake release knob, and control the reversing section of the faulty OHT vehicle to reverse to the left or right by manually pressing the right turn button or the left turn button. The faulty OHT vehicle reaches a free state on the track.

[0068] When using the rescue cart 40 to rescue the faulty OHT vehicle 70, the staff can first connect the top lifting ring 42 of the rescue cart 40 and the rear lifting ring 74 of the faulty OHT vehicle 70 through the traction connection device 60 respectively to perform the traction operation on the faulty OHT vehicle 70. Then, place the rescue box 20 on the inclined platform 44 of the rescue cart 40, connect the rescue box 20 and the OHT vehicle 70 through the rescue cable 80 respectively. After turning on the brake release knob 26, the internal energy storage element 29 of the rescue box 20 starts to supply power, and the brake of the second traveling part 71 of the faulty OHT vehicle 70 can be released. When the faulty OHT vehicle 70 is about to pass through the curved rail, manually press the right turn button 27 or the left turn button 25, and the reversing part driver can control the reversing part 72 of the faulty OHT vehicle 70 to perform the reversing operation. When the reversing sensor 76 detects that the second reversing part 72 reaches the extreme position, it will transmit the right turn in-place signal or the left turn in-place signal to the rescue box 20 through the rescue cable 80. At the same time, the LED lights of the right turn button 27 or the left turn button 25 will light up correspondingly. The staff can observe whether the second reversing part 72 is in place according to the on-off situation of the LED lights inside the button.

[0069] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

[0070] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An OHT vehicle fault rescue device, characterized in that, it includes a rescue traction part and a rescue electrical part; the rescue traction part includes a traction driving device and a traction connection device (60) for connecting the traction driving device to the faulty vehicle to be rescued; the rescue electrical part includes a rescue box (20) and a rescue cable (80) for connecting the rescue box (20) to the faulty vehicle to be rescued.

2. The OHT vehicle fault rescue device according to claim 1, characterized in that, the rescue box (20) includes a box body and a control interface (21) provided on one side of the box body. The control interface (21) is detachably connected to the rescue cable (80). A controller is provided inside the box body of the rescue box (20), and a power indicator light (24), a left turn button (25), a brake release knob (26), and a right turn button (27) are provided on the box body.

3. The OHT vehicle fault rescue device according to claim 2, characterized in that, a charging interface (22) is provided on one side of the box body of the rescue box (20), and a connection protrusion (23) and a sensor slave station (28) are provided on the upper end of the box body of the rescue box (20). The connection protrusion (23) is of a T-shaped structure.

4. The OHT vehicle fault rescue device according to claim 1, characterized in that, the rescue cable (80) includes a multi-core cable (82) and left and right electrical connectors (81, 83) located at both ends of the multi-core cable (82).

5. The OHT vehicle fault rescue device according to claim 1, characterized in that, the traction connection device (60) includes a lifting rope (62) and left and right hooks (61, 63) located at both ends of the lifting rope (62).

6. The OHT vehicle fault rescue device according to claim 1, characterized in that, the traction driving device is an OHT vehicle (10). The OHT vehicle (10) is slidably connected to a track (50) at its upper end. A first walking part (11) and a first reversing part (12) are provided at the upper end of the OHT vehicle (10). First front-side lifting rings (13) and first rear-side lifting rings (14) are provided on the front and rear sides of the OHT vehicle (10) respectively. A clamping part (15) for grasping the rescue box (20) is provided in the middle of the OHT vehicle (10). An obstacle sensor (16) is provided on one side of the OHT vehicle (10) close to the faulty vehicle to be rescued, and an external rescue interface is provided on the faulty vehicle to be rescued.

7. The OHT vehicle fault rescue device according to claim 1, characterized in that, the traction driving device is a rescue cart (40). The rescue cart (40) includes a vehicle body and a cart walking part (43) provided below the vehicle body. A cart handle (41) is provided on one side of the vehicle body. An inclined platform (44) for placing the rescue box (20) is provided at the upper end of the vehicle body. A top lifting ring (42) connected to the traction connection device (60) is provided at the top of the vehicle body.

8. An OHT vehicle fault rescue method, characterized in that, Using the OHT vehicle fault rescue device according to any one of claims 1-7, comprising the following steps: Step 1, the OHT control system issues an OHT vehicle fault alarm and provides the location information of the faulty OHT vehicle; Step 2, after obtaining the information of the faulty OHT vehicle, the rescue traction unit starts, and the rescue traction unit moves to the position of the rescue electrical unit and loads the rescue electrical unit; Step 3, the rescue traction unit loads the rescue electrical unit and moves to the position of the faulty OHT vehicle; Step 4, the rescue traction unit is traction-connected to the faulty OHT vehicle, and the rescue electrical unit is electrically connected to the faulty OHT vehicle; Step 5, electrically control the faulty OHT vehicle through the rescue electrical unit and make the faulty OHT vehicle in a free state on the track; Step 6, tow away the faulty OHT vehicle by towing it with the rescue traction unit.

9. A method for rescuing a fault of an OHT vehicle according to claim 8, characterized in that, the rescue traction unit uses an OHT vehicle. In step 2, the OHT vehicle drives above the rescue electrical unit, and grabs the connection protrusion at the upper end of the rescue box through the clamping part to complete the loading of the rescue box; in step 4, the OHT vehicle is traction-connected to the faulty OHT vehicle through the traction connection device (60), and the rescue box (20) is electrically connected to the faulty OHT vehicle through the rescue cable (80); in step 5, the rescue box is opened, the brake of the running part of the faulty OHT vehicle is released through the brake release knob, and by manually pressing the right turn button or the left turn button, the reversing part of the faulty OHT vehicle can be controlled to perform a reversing operation to the left or right, and the faulty OHT vehicle reaches a free state on the track.

10. A method for rescuing a fault of an OHT vehicle according to claim 8, characterized in that, the rescue traction unit uses a rescue trolley. In step 2, the rescue trolley is pushed to the rescue box, and the rescue box is placed on the inclined table of the rescue trolley; in step 4, the rescue trolley is traction-connected to the faulty OHT vehicle through the traction connection device (60), and the rescue box (20) is electrically connected to the faulty OHT vehicle through the rescue cable (80); in step 5, the rescue box is opened, the brake of the running part of the faulty OHT vehicle is released through the brake release knob, and by manually pressing the right turn button or the left turn button, the reversing part of the faulty OHT vehicle can be controlled to perform a reversing operation to the left or right, and the faulty OHT vehicle reaches a free state on the track.

Images