Shuttle vehicle elevator

Abstract

The utility model relates to the technical field of shuttle vehicle hoisters, and discloses a shuttle vehicle hoister which comprises a hoister rack and a lift car arranged in the hoister rack, and the lift car comprises a rectangular frame, four driving assemblies, a blocking driving mechanism and a first blocking driven mechanism. The driving assembly comprises a servo motor, a motor mounting cover, a speed reducer and a driving gear, the motor mounting cover is fixedly mounted on the outer side of the servo motor, the speed reducer is arranged at the output end of the servo motor, the output end of the speed reducer is connected with a gear, a synchronous lifting mechanism with four gear racks is adopted, the problem of poor positioning precision is avoided, gear rack transmission is adopted, and the positioning precision is improved. The repeated positioning precision can reach + / -2mm, and meanwhile, due to the gear and rack transmission mode, the settlement problem of the lift car is eliminated, and the lift car is more stable.

Description

Technical Field

[0001] This utility model relates to the field of shuttle lift technology, specifically a shuttle lift. Background Technology

[0002] All types of reciprocating hoists adopt a chain-driven traction car structure, using a motor to winch and traction the car from the top to achieve the lifting action. The safety blocking mechanism needs to be installed on each shelf with electric blocking to prevent the trolley on the car from running off the shelf track.

[0003] The existing hoists still have the following shortcomings in use:

[0004] Because the positioning accuracy of the hoist using a chain-type traction mechanism is relatively low, and the chain is stretched, the floor positioning accuracy of the car is poor. At the same time, the amount of chain tension varies under different load conditions, resulting in large leveling positioning errors. In addition, the motor of the chain-type hoist is usually located at the top, which is inconvenient for installation and maintenance when installing a relatively tall hoist. Finally, the electric blocking mechanism for safety protection needs to be installed on each floor. When there are many shelves, the cost will be relatively high, and the failure rate will also increase with the number of devices, affecting the stability of the entire system.

[0005] Therefore, we propose a shuttle lift. Utility Model Content

[0006] The purpose of this invention is to provide a shuttle lift to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0008] This utility model is a shuttle car lifting machine, including a lifting machine frame and a car disposed inside the lifting machine frame. The car includes a rectangular frame, four drive components, a first blocking driven mechanism and a blocking drive mechanism.

[0009] The hoist frame has four columns, and each column is equipped with a rack along the vertical direction.

[0010] The four drive components are respectively located at the four corners of the rectangular frame. Each drive component includes a servo motor, a motor mounting cover, a reducer, and a drive gear. The servo motor is fixedly mounted on the outside of the motor, and the output end of the servo motor is provided with a reducer. The output end of the reducer is fixed with a drive gear. The drive gears in the four drive components mesh with the racks on the four columns respectively.

[0011] Both the first blocking driven mechanism and the blocking driving mechanism are located on one side of the rectangular frame used for the vertical shuttle. The first blocking driven mechanism includes a mounting base, a guide seat, a blocking rod, a spring, and a pressure plate. The guide seat is mounted on the mounting base, and the blocking rod is mounted on the guide seat via a spring. The spring is used to pop the blocking rod out to an upward extended state to play a blocking role. The pressure plate is located at the bottom of the blocking rod.

[0012] The blocking drive mechanism includes an electric push rod, a rotating swing arm, and a pressure block. The output end of the electric push rod is equipped with a rotating swing arm, and the top end of the rotating swing arm is equipped with a pressure block. The pressure block is used to press down on the pressure plate so that the blocking rod moves downward against the elastic force of the spring.

[0013] Furthermore, the blocking driven mechanism also includes a limiting block, which is installed at the top of the blocking rod.

[0014] Furthermore, a low-position blocking detection switch is fixedly installed on the mounting base on one side below the guide seat. The low-position blocking detection switch is used to detect whether the pressure plate has been pressed down into place.

[0015] Furthermore, the rotating arm is V-shaped, and its center is rotatably mounted on a rectangular frame via a pivot. One end of the rotating arm is hinged to the push rod of the electric push rod, and the other end is connected to the pressure block.

[0016] Furthermore, the blocking drive mechanism also includes a mounting plate, which is mounted on the rectangular frame. The center of the rotating arm is rotatably mounted on the mounting plate via the pivot. The electric push rod and the rotating arm are located on the same side of the mounting plate, and the main body of the electric push rod is hinged to the mounting plate.

[0017] Furthermore, it also includes multiple second blocking driven mechanisms. The hoist frame has multiple layers, each layer having a crossbeam connected to the column. Multiple second blocking driven mechanisms are respectively disposed on multiple crossbeams. The second blocking driven mechanisms have the same structure as the first blocking driven mechanisms. When the car moves to each layer, the blocking drive mechanism actuates, simultaneously pressing down the first blocking driven mechanism and the pressure plate within the first blocking driven mechanism via the pressure block, thus releasing the obstruction.

[0018] This utility model has the following beneficial effects:

[0019] The car and the four columns of the hoist frame are connected by four drive components and four racks to achieve lifting drive. The synchronous lifting mechanism with four sets of gears and racks avoids the problem of poor positioning accuracy. The gear and rack transmission can achieve a repeatability of ±2mm. At the same time, the gear and rack transmission eliminates the problem of car settling, making it more stable. The transmission method of servo four-axis gear and rack mechanism has better equipment responsiveness, reduced acceleration and deceleration time, and increased equipment operating efficiency.

[0020] In addition, the blocking mechanism uses a first blocking driven mechanism and a blocking drive mechanism located on the rectangular frame of the car, together with multiple second blocking driven mechanisms on each floor beam, which reduces the number of drive components, making the equipment more compact and the control simpler. The use of electric push rod drive (built-in inductive switch) reduces the need for external proximity switches, making the structure more modular.

[0021] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the main body of the car of this utility model;

[0025] Figure 3 This is a schematic diagram of the blocking drive mechanism of this utility model;

[0026] Figure 4 This is a schematic diagram of the blocking driven mechanism of this utility model;

[0027] Figure 5 This is a top view of the car structure of this utility model;

[0028] Figure 6 This is a schematic diagram of each layer of crossbeams and the second blocking driven mechanism on them in the hoist frame of this utility model.

[0029] The attached diagram lists the components represented by each number as follows:

[0030] In the diagram: 1. Hoist frame; 101. Column; 102. Crossbeam; 2. Rectangular frame; 30. Drive assembly; 3. Servo motor; 4. Motor mounting cover; 5. Reducer; 6. Drive gear; 70. Blocking drive mechanism; 71. Mounting plate; 7. Electric push rod; 8. Rotary swing arm; 9. Pressure block; 100. First blocking driven mechanism; 10. Mounting seat; 11. Blocking low position detection switch; 12. Guide seat; 13. Blocking rod; 15. Rack; 16. Pressure plate; 17. Limit block; 18. Rotating shaft; 200. Second blocking driven mechanism. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] This utility model provides a shuttle car lifting machine, such as Figures 1-6 As shown, the shuttle lift includes a lift frame 1 and a car housed inside the lift frame 1. The car is used to carry shuttles and goods. The car includes a rectangular frame 2, four drive components 30, a first blocking driven mechanism 100, and a blocking drive mechanism 70. The lift frame 1 has four columns 101, each with a rack 15 vertically mounted on it. The four drive components 30 are respectively located at the four corners of the rectangular frame 2. Each drive component 30 includes a servo motor 3, a motor mounting cover 4, a reducer 5, and a drive gear 6. The motor mounting cover 4 is fixedly mounted on the outside of the servo motor 3. The reducer 5 is located at the output end of the servo motor 3, and the drive gear 6 is fixedly mounted at the output end of the reducer 5. The drive gear 6 in the four drive components 30 meshes with the racks 15 on the four columns 101 respectively.

[0033] Both the first blocking driven mechanism 100 and the blocking driving mechanism 70 are located on one side of the rectangular frame 2 for the vertical shuttle. The first blocking driven mechanism 100 includes a mounting base 10, a guide seat 12, a blocking rod 13, a spring, and a pressure plate 16. The guide seat 12 is mounted on the mounting base 10, and the blocking rod 13 is mounted on the guide seat 12 by a spring. The spring is used to pop the blocking rod 13 into an upward extended state to block. The pressure plate 16 is located at the bottom of the blocking rod 13. The blocking driving mechanism 70 includes an electric push rod 7, a rotating swing arm 8, and a pressure block 9. The output end of the electric push rod 7 is mounted with the rotating swing arm 8, and the top end of the rotating swing arm 8 is mounted with the pressure block 9. The pressure block 9 is used to press down the pressure plate 16 so that the blocking rod 13 overcomes the spring force and moves downward to release the block.

[0034] The blocking driven mechanism also includes a limit block 17, which is installed at the top of the blocking rod 13.

[0035] In one embodiment, a low-position blocking detection switch 11 is fixedly installed on the mounting base 10 on one side below the guide seat 12. The low-position blocking detection switch 11 is used to detect whether the pressure plate 16 has been pressed down into place.

[0036] In one specific embodiment, the rotating arm 8 is V-shaped, and the center of the rotating arm 8 is rotatably mounted on the rectangular frame 2 via a rotating shaft 18. One end of the rotating arm 8 is hinged to the push rod of the electric push rod 7, and the other end is connected to the pressure block 9.

[0037] In one specific embodiment, the blocking drive mechanism 70 further includes a mounting plate 71, which is mounted on the rectangular frame 2. The center of the rotating arm 8 is rotatably mounted on the mounting plate 71 via a pivot 18. The electric push rod 7 and the rotating arm 8 are located on the same side of the mounting plate 71, and the main body of the electric push rod 7 is hinged to the mounting plate 71.

[0038] In some embodiments, a plurality of second blocking driven mechanisms 200 are also included. The hoist frame 1 has multiple layers, each layer having a crossbeam 102 connected to the column 101. The plurality of second blocking driven mechanisms 200 are respectively disposed on the multiple crossbeams 102. The second blocking driven mechanisms 200 have the same structure as the first blocking driven mechanism 100. When the car moves to each layer, the blocking drive mechanism 70 is activated, which can simultaneously press down the first blocking driven mechanism 100 and the pressure plate 16 in the first blocking driven mechanism 100 through the pressure block 9, thereby releasing the blocking.

[0039] like Figures 1-6 As shown, this utility model provides a technical solution: a synchronous lifting mechanism of four gear racks 15, which avoids the problem of poor positioning accuracy. By using gear rack 15 transmission, the repeatability of positioning accuracy can reach ±2mm. At the same time, the transmission form of gear rack 15 eliminates the problem of car settling, making it more stable. By adopting the transmission method of servo four-axis gear rack 15 mechanism, the equipment has better responsiveness, reduced acceleration and deceleration time, and increased equipment operating efficiency.

[0040] The four drive components 30 are arranged in a specific geometric distribution in the car layout, usually evenly distributed around the rectangular frame 2 or at key support points. After receiving the pulse signal from the control system, the servo motor 3 outputs power according to the set speed and torque.

[0041] The reducer 5 converts the high-speed, low-torque output of the servo motor into a low-speed, high-torque output suitable for driving the drive gear 6 through multi-stage gear meshing. The drive gear 6 meshes tightly with the rack 15 on the hoist frame 1. Driven by the motor, the drive gear 6 rolls along the rack 15. The meshing and disengagement of each tooth corresponds to the precise displacement of the car.

[0042] Because the machining accuracy of the drive gear 6 and rack 15 can be controlled at a high level, for example, the tooth profile error is within a very small tolerance range, and the correct meshing clearance and relative position relationship between the gear and rack 15 are ensured by professional calibration tools during installation, the distance moved by the car during the rising or falling process can be accurately repeated, thereby achieving a repeatability positioning accuracy of ±2mm.

[0043] This high-precision positioning capability is crucial for the accurate docking of shuttles at different work levels. For example, in automated warehousing systems, shuttles need to accurately dock with the storage locations on the shelves to achieve efficient storage and retrieval of goods.

[0044] Unlike some lifting mechanisms that use flexible connectors such as ropes and chains, the gear and rack 15 transmission is a rigid transmission. When the car is carrying the weight of the shuttle and the cargo, the contact force between the gear and the rack 15 is transmitted through the direct compression of the tooth surfaces. This rigid contact method makes the force transmission more direct and stable, and will not cause the car to settle over time due to the elastic elongation of the flexible connectors. Even under long-term, high-load operating conditions, the height of the car can remain relatively constant, ensuring the stability and reliability of the entire lifting system and reducing the risk of collisions with other equipment components due to settlement and safety hazards during cargo handling.

[0045] The servo motor 3 has a fast dynamic response characteristic, and can adjust the output speed and torque according to the instructions of the control system in a very short time. In the four-axis gear rack 15 mechanism, the four servo motors 3 work together to form a multi-axis linkage power system. When the control system issues an acceleration command, the four servo motors 3 can increase the output torque almost simultaneously, so that the drive gear 6 can quickly increase the rotation speed, thereby rapidly increasing the running speed of the car. When deceleration is required, the servo motor 3 can also quickly reduce the torque output and cooperate with an appropriate braking mechanism (such as the electromagnetic brake built into the servo motor 3 or an externally added braking device) to make the car decelerate smoothly.

[0046] This rapid acceleration and deceleration capability is due to the precise control algorithm of the servo motor and the efficient power transmission characteristics of the rack and pinion 15 drive. Compared with the traditional asynchronous motor driven lifting mechanism, its acceleration and deceleration time can be significantly shortened.

[0047] The blocking mechanism uses a first blocking driven mechanism 100 and a blocking drive mechanism 70 located on the rectangular frame 2 of the car, in conjunction with multiple second blocking driven mechanisms 200 on each floor beam 102. This means one active mechanism is paired with multiple driven mechanisms, which reduces the number of drives, makes the equipment more compact, and simplifies control. The use of an electric push rod 7 (with a built-in inductive switch) reduces the need for external proximity switches, making the structure more modular.

[0048] The electric push rod 7 in the blocking drive mechanism 70 is the only active power source of the entire blocking mechanism. The motor inside the electric push rod 7 drives the lead screw to rotate, and the lead screw cooperates with the nut pair on the push rod to realize the extension and retraction movement of the push rod.

[0049] When the electric push rod 7 extends, its front end generates a thrust at the connection point with the rotating arm 8. Since the rotating arm 8 is hinged to the rectangular frame 2 of the car through the central pivot 18, the rotating arm 8 moves in a circle around the pivot 18 under the action of the thrust.

[0050] As the rotating arm 8 rotates, the pressure block 9 at the top of the rotating arm 8 applies downward pressure to the pressure plates 16 of the first blocking follower mechanism 100 and the second blocking follower mechanism 200. The bottom of the blocking rod 13 of the first blocking follower mechanism 100 and the second blocking follower mechanism 200 is connected to the pressure plate 16. When the pressure plate 16 is under pressure, it overcomes the elastic force of the spring inside the guide seat 12 and moves downward along the guide groove of the guide seat 12, thereby releasing the obstruction to the shuttle.

[0051] This design, in which one electric push rod 7 drives two blocking rods 13, reduces the number of drive devices and avoids setting up separate drive motors, transmission mechanisms, and other components for each blocking position. This makes the equipment layout inside the car more compact, saves space, and is conducive to the miniaturization of the overall structure of the hoist. It is especially suitable for logistics handling scenarios with limited space.

[0052] The inductive switches inside the electric linear actuator 7 typically employ components such as Hall sensors or limit switches. These inductive switches determine the extension / retraction position of the linear actuator by detecting changes in the magnetic field or mechanical position inside the actuator.

[0053] For example, when the push rod extends to a certain position, the Hall sensor senses the change in magnetic field strength, generates an electrical signal, and transmits it to the control system, informing the control system that the blocking mechanism has been released from blocking. When the push rod retracts, another inductive switch detects the corresponding position change and notifies the control system that the blocking mechanism has returned to the blocking state. Compared with the traditional method of installing multiple proximity switches on the outside of the device to detect the position of the blocking rod 13, this design with a built-in inductive switch reduces the number of external electrical components and lowers the risk of proximity switch failure due to external environmental factors (such as dust, humidity, collision, etc.).

[0054] Meanwhile, since the inductive switch and the electric push rod 7 are integrated together, the signal transmission line is shorter and the signal interference is less, which enables the control system to obtain the status information of the blocking mechanism more accurately and reliably, simplifies the control logic, and improves the stability and reliability of the entire blocking mechanism.

[0055] Moreover, this modular design concept makes the blocking mechanism more convenient to install, debug and maintain. In case of failure, the blocking mechanism can be replaced or repaired as an independent module, reducing the downtime of the entire hoist equipment and improving the maintainability and availability of the equipment.

[0056] The specific workflow and principles are as follows:

[0057] Before starting the shuttle elevator, the operator first conducts a comprehensive visual inspection of the equipment, checking whether the elevator frame 1 is deformed, cracked or otherwise damaged, and ensuring that the rectangular frame 2 is firmly installed inside the frame without loosening.

[0058] For the four drive components 30, check whether the housing of the servo motor 3 is intact, whether the cooling fan is working properly, and whether the power and signal lines of the motor are reliably connected; open the motor mounting cover 4 and check whether there are any foreign objects inside, whether the oil level of the reducer 5 is within the normal range, and observe whether the oil is clear and free of impurities. If necessary, adjust the oil level or replace the oil according to the reducer maintenance manual.

[0059] Manually rotate the drive gear 6 to check if it rotates smoothly and without any jamming. At the same time, check the meshing of the gear and rack 15, and check if there is any wear, deformation or foreign object embedded in the tooth surface. If any problems are found, use professional tools to clean, repair or adjust the meshing clearance to ensure that the meshing clearance between the drive gear 6 and rack 15 is uniform and meets the design requirements, generally controlled between 0.1-0.3mm.

[0060] For the blocking drive mechanism 70, check the appearance of the electric push rod 7 for damage, and check for scratches, deformation, etc. on the surface of the push rod. Check whether the power cord and control line of the electric push rod 7 are firmly connected. Operate the electric push rod 7 to perform a telescopic test and observe whether its movement is smooth and whether there is any abnormal noise or vibration. Check whether the connection between the rotating arm 8 and the electric push rod 7 is firm and whether there is sufficient lubrication at the rotating shaft 18. If the lubrication is insufficient, add an appropriate amount of grease, such as lithium-based grease, to ensure that the rotating arm 8 rotates flexibly around the rotating shaft 18. Check the condition of the pressure block 9 and observe whether the electric push rod 7 can make good contact with the pressure plate 16 of the first blocking driven mechanism 100 and the second blocking driven mechanism 200 when it is in motion, without any deviation or misalignment.

[0061] For the first blocking driven mechanism 100 and the second blocking driven mechanism 200, check whether the fixing bolts of the mounting seat 10 on the rectangular frame 2 are tight, whether the connection between the guide seat 12 and the mounting seat 10 is reliable, whether the blocking rod 13 moves up and down in the guide seat 12 without any jamming, and whether the linear bearing (if any) inside the guide seat 12 is working properly.

[0062] Check whether the installation position of the low-position blocking detection switch 11 is correct, whether the detection probe is clean and free of dust or dirt, perform a functional test on the detection switch, use an obstruction to simulate the position change of the blocking rod 13, and check whether the detection switch can accurately output a signal. If the detection switch is faulty, repair or replace it in time.

[0063] Check whether the pressure plate 16 and the limit block 17 are securely installed on the blocking rod 13, whether the spring is correctly installed in the guide seat 12, and whether the spring elasticity meets the requirements. A spring force gauge can be used to test the spring force. If the spring force is insufficient or excessive, replace it with a suitable spring according to the design requirements to ensure that the spring can pop the blocking rod 13 to the normal blocking state of extending upward.

[0064] Detailed procedure for normal upgrade operation:

[0065] When the shuttle needs to be lifted, the control system first performs a self-check on the equipment according to a preset program. After confirming that all components are in normal condition, it sends start and lifting commands to the servo motors 3 of the four drive components 30. After receiving the commands, the servo motors 3 output the corresponding voltage and current according to the internal control algorithm and the preset speed curve, and the motor rotor starts to rotate. The rotational power of the motor is transmitted to the reducer 5 through the output shaft. The multiple sets of gears inside the reducer 5 perform a speed reduction and torque increase operation according to the designed transmission ratio, converting the high-speed, low-torque motor output into a low-speed, high-torque output suitable for driving the drive gear 6. The drive gear 6 starts to rotate under the drive of the reducer 5. Since it is tightly meshed with the rack 15 on the hoist frame 1, the rotation of the gear drives the car to move upward along the rack 15.

[0066] During the car's ascent, the control system obtains the motor's speed and rotation angle information in real time through the encoder installed on the servo motor 3, and then calculates the car's current position and speed.

[0067] At the same time, the control system compares these actual position and speed information with the preset lifting trajectory. Based on the deviation value, it uses a closed-loop control algorithm, such as PID (proportional-integral-derivative) control algorithm, to adjust the output voltage and current of the servo motor, thereby precisely controlling the speed and torque of the motor, so that the car can rise smoothly according to the preset speed curve and ensure that the final positioning accuracy is within ±2mm.

[0068] For example, when the car's ascent speed is detected to be lower than the preset value, the control system increases the output voltage of the servo motor, increases the motor speed, and accelerates the car's ascent. When the speed is higher than the preset value, the output voltage is reduced to decelerate the motor, ensuring that the speed of the entire lifting process is stable and accurate. When approaching the target height, the control system gradually reduces the output torque of the servo motor in advance according to the preset deceleration distance and deceleration curve, so that the car decelerates smoothly and finally stops accurately at the target height position. At this time, the shuttle car is also lifted to the designated working level.

[0069] Detailed procedure for normal descent:

[0070] When the shuttle needs to descend, the control system sends a descent command to the servo motors 3 of the four drive components 30. The servo motors 3 reverse according to the command and output reverse power according to the preset descent speed curve and control algorithm. The reverse power of the motor is transmitted to the drive gear 6 after being reduced and increased in torque by the reducer 5. The drive gear 6 rotates in the opposite direction, driving the car to move downward along the rack 15.

[0071] Similarly, during the descent, the control system monitors the car's position and speed information in real time through the servo motor encoder, compares it with the preset descent trajectory, and uses a closed-loop control algorithm to adjust the output parameters of the servo motor.

[0072] When the car descends too quickly, the control system increases the reverse braking torque of the motor to reduce the descent speed. When the speed is too slow, the braking torque is appropriately reduced to maintain a stable descent speed. When approaching the target descent position, the control system controls the servo motor to decelerate in advance to ensure that the car can stop smoothly and accurately at the target position, allowing the shuttle to descend safely to the designated location. Throughout the descent process, the position error is strictly controlled within ±2mm, ensuring the docking accuracy of the shuttle with other equipment or work areas.

[0073] Detailed blocking operation procedure:

[0074] When the shuttle reaches a position where it needs to be blocked, such as when loading or unloading goods at a specific work level or waiting for the next instruction, the control system activates the electric push rod 7 of the blocking drive mechanism 70 according to a preset program or an external trigger signal (such as a sensor detecting that the shuttle has reached a specific position). After receiving the start signal, the motor inside the electric push rod 7 starts to drive the lead screw to rotate. The cooperation between the lead screw and the nut pair causes the push rod to extend outward.

[0075] The extension action of the push rod generates a thrust on the rotating arm 8 connected to it. The rotating arm 8 begins to rotate around the rotating shaft 18. During the rotation, the pressure block 9 at the top of the rotating arm 8 gradually approaches and presses down on the pressure plate 16 of the two blocking driven mechanisms (first blocking driven mechanism 100 and second blocking driven mechanism 200). When the pressure applied by the pressure block 9 to the pressure plate 16 exceeds the elastic force of the spring at the bottom of the blocking rod 13, the blocking rod 13 moves downward along the guide groove of the guide seat 12 under the drive of the pressure plate 16.

[0076] As the blocking bar 13 descends, the low-position blocking detection switch 11 monitors the position change of the blocking bar 13 in real time. When the blocking bar 13 descends to a certain position, the detection switch is triggered, generating an electrical signal and transmitting it to the control system, informing the control system that the blocking bar 13 has descended to the unblocking state. At this time, the shuttle can pass through the position smoothly without being blocked.

[0077] Throughout the entire blocking process, the control system precisely monitors and confirms the action of the blocking mechanism based on the push rod position information fed back by the built-in inductive switch of the electric push rod 7 and the blocking rod 13 position information fed back by the blocking low-position detection switch 11. This ensures the reliability and safety of the blocking action and prevents accidents such as shuttle collisions caused by misoperation or malfunction.

[0078] Detailed procedure for restoring the blocking operation:

[0079] When the shuttle needs to be blocked again, for example, after the loading and unloading of goods is completed or after receiving an instruction to continue moving forward, the control system sends a retraction command to the electric push rod 7. The motor inside the electric push rod 7 reverses, driving the lead screw to rotate in the opposite direction, causing the push rod to retract. As the push rod retracts, it drives the rotating swing arm 8 to reset. The pressure block 9 at the top of the rotating swing arm 8 gradually disengages from the pressure plate 16 of the two blocking driven mechanisms (the first blocking driven mechanism 100 and the second blocking driven mechanism 200). At this time, the blocking rod 13 pops up under the elastic force of the spring inside the guide seat 12, returning to the upward-extended blocking position. When the blocking rod 13 rises to the normal blocking position, the blocking low-position detection switch 11 is triggered again, generating an electrical signal and transmitting it to the control system, informing the control system that the blocking mechanism has returned to the blocking state. At this time, the shuttle car will be blocked at the corresponding position by the blocking rod 13, waiting for the next operation command. During the process of restoring the blocking, the control system also monitors and confirms the restoration action of the blocking mechanism based on the feedback signals of the inductive switch built into the electric push rod 7 and the blocking low-position detection switch 11, ensuring the normal restoration of the blocking function and ensuring the safe and stable operation of the entire shuttle car lifting system.

[0080] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A shuttle hoist, characterized in that: It includes a hoist frame (1) and a car disposed inside the hoist frame (1). The car includes a rectangular frame (2), four drive components (30), a first blocking driven mechanism (100), and a blocking drive mechanism (70). The hoist frame (1) has four columns (101), and each column (101) is provided with a rack (15) in the vertical direction; The four drive components (30) are respectively located at the four corners of the rectangular frame (2). Each drive component (30) includes a servo motor (3), a motor mounting cover (4), a reducer (5), and a drive gear (6). The servo motor (3) is fixedly mounted with the motor mounting cover (4) on its outer side. The output end of the servo motor (3) is provided with a reducer (5). The output end of the reducer (5) is fixed with a drive gear (6). The drive gear (6) in the four drive components (30) respectively meshes with the racks (15) on the four columns (101). The first blocking driven mechanism (100) and the blocking driving mechanism (70) are both located on one side of the rectangular frame (2) for the vertical shuttle. The first blocking driven mechanism (100) includes a mounting base (10), a guide seat (12), a blocking rod (13), a spring, and a pressure plate (16). The guide seat (12) is mounted on the mounting base (10), and the blocking rod (13) is mounted on the guide seat (12) by means of a spring. The spring is used to pop the blocking rod (13) into an upward extended state to play a blocking role. The pressure plate (16) is located at the bottom of the blocking rod (13). The blocking drive mechanism (70) includes an electric push rod (7), a rotating swing arm (8), and a pressure block (9). The output end of the electric push rod (7) is equipped with the rotating swing arm (8), and the top end of the rotating swing arm (8) is equipped with the pressure block (9). The pressure block (9) is used to press down the pressure plate (16) so that the blocking rod (13) moves downward against the elastic force of the spring and releases the block.

2. The shuttle lift according to claim 1, characterized in that: The blocking driven mechanism also includes a limiting block (17), which is installed at the top of the blocking rod (13).

3. The shuttle lift according to claim 1, characterized in that: A low-position blocking detection switch (11) is fixedly installed on the mounting base (10) on one side below the guide seat (12). The low-position blocking detection switch (11) is used to detect whether the pressure plate (16) is pressed down into place.

4. The shuttle hoist according to claim 1, characterized in that: The rotating arm (8) is V-shaped. The center of the rotating arm (8) is rotatably mounted on the rectangular frame (2) via a rotating shaft (18). One end of the rotating arm (8) is hinged to the push rod of the electric push rod (7), and the other end is connected to the pressure block (9).

5. A shuttle lift according to claim 4, characterized in that: The blocking drive mechanism (70) also includes a mounting plate (71), which is mounted on the rectangular frame (2). The center of the rotating arm (8) is rotatably mounted on the mounting plate (71) via the rotating shaft (18). The electric push rod (7) and the rotating arm (8) are located on the same side of the mounting plate (71), and the main body of the electric push rod (7) is hinged to the mounting plate (71).

6. A shuttle elevator according to any one of claims 1-5, characterized in that: It also includes multiple second blocking driven mechanisms (200). The hoist frame (1) has multiple layers, and each layer is provided with a crossbeam (102) connected to the column (101). Multiple second blocking driven mechanisms (200) are respectively arranged on multiple crossbeams (102). The second blocking driven mechanism (200) has the same structure as the first blocking driven mechanism (100). When the car moves to each layer, the blocking drive mechanism (70) is activated, and can simultaneously press down the first blocking driven mechanism (100) and the pressure plate (16) in the first blocking driven mechanism (100) through the pressure block (9) to release the obstruction.

Images