Remote walking control system of tray picking vehicle

Abstract

The utility model relates to the technical field of picking vehicles, in particular to a remote walking control system of a tray picking vehicle. The remote walking control system can control the picking vehicle to walk, steer, accelerate, stop and the like on the premise that the picker does not return to a cab. A picker can control the vehicle to follow while picking goods, so that the trouble of repeatedly getting on and off the vehicle by the picker is saved, and the picking efficiency during low-position picking is improved. And meanwhile, the anti-collision assembly is designed and installed on the front side of the picking vehicle, in the remote control process, once the picking vehicle is about to collide with goods, goods shelves and even personnel in a narrow space, the anti-collision assembly can be triggered immediately, the vehicle is controlled to stop, and the working safety of the picking vehicle is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of picking cart technology, and in particular to a remote walking control system for pallet picking carts. Background Technology

[0002] Pallet picking vehicles are widely used in existing warehouse management systems due to their ease of operation and time-saving and labor-saving features. However, most existing pallet picking vehicles are designed with the driver's cab and cargo compartment at opposite ends. This means that, like a traditional passenger car, to access a specific item, the picking vehicle must be driven to the designated shelf or stacking area, and then the picking worker must get out of the vehicle to move the item.

[0003] For picking operations, frequent loading and unloading of vehicles not only reduces the efficiency of goods storage and retrieval, but also increases the labor intensity of staff. This drawback is particularly evident in the operation of low-position picking vehicles.

[0004] In view of this, a convenient and safe remote walking control system for pallet picking carts is provided. Utility Model Content

[0005] Traditional pallet picking carts, especially low-level pallet picking carts, require picking workers to repeatedly get on and off the cart when handling a large number and variety of goods. This repeated getting on and off not only causes psychological and physical fatigue for the picking workers but also wastes picking time, resulting in low picking efficiency. To address this, this invention designs a remote driving control system for the picking cart, allowing picking workers to control the cart's movement, steering, acceleration, and stopping remotely without returning to the driver's cab, avoiding the tedious process of repeatedly getting on and off. Furthermore, since the application scenario is in a warehouse with numerous shelves and goods, anti-collision components are specifically designed to ensure the safety of the remotely controlled picking cart and prevent damage to the vehicle, shelves, or goods due to misoperation of the remote control. The specific technical solution is as follows:

[0006] This utility model provides a remote walking control system for a pallet picking vehicle, including a remote terminal, a signal converter, a traction controller, and a steering controller; the traction controller and the steering controller are respectively connected to a traction motor and a steering motor.

[0007] The remote terminal sends control commands to the signal converter via a wireless network. The signal converter converts the control commands into communication protocol signals that can be recognized by the traction controller and the steering controller, and transmits the communication protocol signals to the traction controller and the steering controller. The traction controller and the steering controller control the traction motor to drive the pallet picking cart to move and control the steering motor to drive the pallet picking cart to turn according to the communication protocol signals.

[0008] The front of the pallet picking vehicle is equipped with an anti-collision component. When the anti-collision component comes into contact with or detects an obstacle, it sends a detection signal back to the signal converter, which then sends control commands to the traction controller and steering controller to stop the traction motor and steering motor.

[0009] In one embodiment, the anti-collision component includes ultrasonic sensors fixedly installed around the pallet picking vehicle. The ultrasonic sensors detect and sense obstacles around the pallet picking vehicle in real time. When the distance between the detected obstacle and the pallet picking vehicle reaches a predetermined value, the ultrasonic sensors feed back a signal to the signal converter, which then controls the traction motor and steering motor to stop running in a timely manner.

[0010] In one embodiment, the anti-collision assembly further includes anti-collision ears, which are provided in multiple portions and vertically arranged on the front side of the pallet picking vehicle.

[0011] In one embodiment, the anti-collision assembly further includes a pull cord switch and a trigger cord, wherein the trigger cord passes through the openings at the end of all anti-collision ears away from the pallet picking vehicle, and both ends are fixedly connected to the pull cord switches on both sides of the pallet picking vehicle, ensuring that the trigger cord is in a taut state.

[0012] The pull-cord switch is electrically connected to the power supply circuits of the traction motor and the steering motor, and is configured to immediately cut off the power supply circuits of the traction motor and the steering motor when triggered.

[0013] In one embodiment, the remote terminal includes a mobile phone, a PC, or a tablet computer.

[0014] In one embodiment, the pull cord switch is specifically model ES97Z11.

[0015] Compared to traditional pallet picking carts, especially low-position picking carts, this invention allows for remote movement control via a remote walking control system, enabling picking personnel to control the cart's movement, steering, acceleration, and stopping without returning to the driver's cab. Pickers can control the vehicle's movement while picking goods, eliminating the need for workers to repeatedly get on and off the cart and improving picking efficiency in low-position picking.

[0016] Meanwhile, the anti-collision components designed and installed on the front of the picking cart can be activated immediately during remote control if the picking cart is about to collide with goods, shelves or even people in a narrow space, thus stopping the vehicle and effectively ensuring the safety of the picking cart during operation. Attached Figure Description

[0017] Figure 1 The control block diagram of this utility model is shown;

[0018] Figure 2 A block diagram of the signal conversion of this utility model is shown;

[0019] Figure 3 A schematic diagram of the anti-collision component structure of this utility model is shown;

[0020] In the picture: 1. Pull cord switch, 2. Anti-collision ear, 3. Trigger cord. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-2 This utility model provides a remote walking control system for a pallet picking cart, including a remote terminal, a signal converter, a traction controller, and a steering controller; the traction controller and the steering controller are respectively connected to a traction motor and a steering motor;

[0023] The remote terminal sends control commands to the signal converter via a wireless network. The signal converter converts the control commands into communication protocol signals that can be recognized by the traction controller and the steering controller, and transmits the communication protocol signals to the traction controller and the steering controller. The traction controller and the steering controller control the traction motor to drive the pallet picking cart to move and control the steering motor to drive the pallet picking cart to turn according to the communication protocol signals.

[0024] The front of the pallet picking vehicle is equipped with an anti-collision component. When the anti-collision component comes into contact with or detects an obstacle, it sends a detection signal back to the signal converter, which then sends control commands to the traction controller and steering controller to stop the traction motor and steering motor.

[0025] The remote terminal includes a mobile phone, PC, or tablet computer.

[0026] Existing low-position picking vehicles often combine the cab and storage area in a front-to-back layout. In use, picking workers must drive the picking vehicle from the cab to the designated stack or shelf, then dismount to retrieve and stack the goods according to the inventory list, and finally return to the cab, repeating this process continuously. In other words, if the inventory list is large and varied, picking workers will inevitably have to repeatedly get on and off the vehicle in a short period, alternating between adjusting the picking vehicle's position and moving the goods. This inevitably leads to psychological and physical fatigue for the picking workers and wastes picking time during the repeated getting on and off.

[0027] Therefore, the remote walking control system designed in this embodiment enables the picking vehicle to have remote control functionality. That is, the picking personnel can send control commands to the signal converter on the picking vehicle through their tablet computer, mobile phone, etc., without returning to the cab. The signal converter converts the control commands into communication protocol signals that can be recognized by the traction controller and the steering controller. Then, the traction controller and the steering controller control the traction motor and the steering motor to operate according to the communication protocol signals, so as to drive the pallet picking vehicle to complete walking, turning, acceleration, stopping, etc., until the picking vehicle reaches the designated position.

[0028] During use, picking workers can walk on the ground while controlling the picking cart to follow. When they get the goods on the lower shelf, they turn around and place them on the picking cart, and then continue to look for the next shelf, without having to run back and forth between the cab and the ground.

[0029] Meanwhile, the aforementioned remote walking control system can also serve as a platform for improving the picking vehicle towards unmanned operation. In the future, unmanned picking can be achieved by adding robotic arms and various sensors and cameras.

[0030] like Figure 3 As shown, the anti-collision component includes ultrasonic sensors fixedly installed around the pallet picking vehicle. The ultrasonic sensors detect and sense obstacles around the pallet picking vehicle in real time. When the distance between the detected obstacle and the pallet picking vehicle reaches a predetermined value, the ultrasonic sensors feed back the signal to the signal converter, which then controls the traction motor and steering motor to stop running in a timely manner.

[0031] The anti-collision component also includes anti-collision ears 2, which are provided in multiples and vertically arranged on the front side of the pallet picking vehicle.

[0032] The anti-collision assembly also includes a pull rope switch 1 and a trigger rope 3. The trigger rope 3 passes through the openings of all the anti-collision ears 2 away from the end of the pallet picking cart, and its two ends are fixedly connected to the pull rope switches 1 on both sides of the pallet picking cart, ensuring that the trigger rope 3 is in a taut state.

[0033] The pull rope switch 1 is electrically connected to the power supply circuit of the traction motor and the steering motor, and is configured to immediately cut off the power supply circuit of the traction motor and the steering motor when triggered.

[0034] The specific model of the pull cord switch 1 is ES97Z11 manufactured by Shide.

[0035] Because remote walking control systems lose human visual control, blind spots and errors in the view of distant personnel can easily cause picking carts to collide with shelves and stacks of goods in confined spaces. Such collisions can damage the vehicle, topple shelves or goods, and even injure other workers. Therefore, a safety feature is needed for remote control systems: a collision avoidance device. Installed at the very front of the picking cart, similar to the bumper of a passenger car, this device can immediately stop the vehicle when it senses an impending collision with an obstacle, ensuring the safety of people, the cart, and the goods.

[0036] Specifically, multiple ultrasonic sensors are installed around the picking vehicle. As the vehicle moves, the ultrasonic sensors continuously detect whether there are obstacles around it. If the distance between the detected obstacle and the picking vehicle reaches a preset warning value, the ultrasonic sensor will send a warning signal to the signal converter in time. After the signal converter converts the signal, the traction controller and steering controller control the traction motor and steering motor to stop immediately to avoid collisions caused by continued movement.

[0037] Meanwhile, to prevent the picking cart from being accidentally hit due to the blind spot of the ultrasonic sensor, this utility model adds a pull rope switch 1, anti-collision ears 2, and trigger rope 3 to the ultrasonic sensor. The trigger rope 3, guided by multiple anti-collision ears 2, can completely cover the front of the picking cart. When the vehicle is traveling and squeezes against the shelf, people, or goods, the trigger rope 3, which is taut between two adjacent anti-collision ears 2, will move closer to the picking cart due to the squeezing force, and then pull the pull rope switch 1 at both ends of the trigger rope 3. This causes the pull rope switch 1 to immediately disconnect the power supply to the traction motor and steering motor, so that the picking cart stops quickly.

[0038] Therefore, this utility model not only designs a remote control system that allows the picking cart to move conveniently, avoiding picking workers from repeatedly getting on and off the cart and improving picking efficiency, but also provides a double insurance against collisions for the remote walking control system through the cooperation of ultrasonic sensors, pull rope switch 1 and trigger rope 3. This solves the safety hazards caused by blind spots or perception differences in remote control vehicles when people and carts are separated, making the entire pallet picking cart remote walking control system not only efficient but also safe.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A remote walking control system for pallet picking carts, characterized in that: It includes a remote terminal, a signal converter, a traction controller, and a steering controller; the traction controller and the steering controller are respectively connected to the traction motor and the steering motor; The remote terminal sends control commands to the signal converter via a wireless network. The signal converter converts the control commands into communication protocol signals that can be recognized by the traction controller and the steering controller, and transmits the communication protocol signals to the traction controller and the steering controller. The traction controller and the steering controller control the traction motor to drive the pallet picking cart to move and control the steering motor to drive the pallet picking cart to turn according to the communication protocol signals. The front of the pallet picking vehicle is equipped with an anti-collision component. When the anti-collision component comes into contact with or detects an obstacle, it sends a detection signal back to the signal converter, which then sends control commands to the traction controller and steering controller to stop the traction motor and steering motor.

2. The remote walking control system for pallet picking carts according to claim 1, characterized in that: The anti-collision component includes ultrasonic sensors fixedly installed around the pallet picking vehicle. The ultrasonic sensors detect and sense obstacles around the pallet picking vehicle in real time. When the distance between the detected obstacle and the pallet picking vehicle reaches a predetermined value, the ultrasonic sensors feed back the signal to the signal converter, which then controls the traction motor and steering motor to stop running in a timely manner.

3. The remote walking control system for pallet picking carts according to claim 2, characterized in that: The anti-collision assembly also includes anti-collision ears (2), which are provided in multiple and vertically arranged on the front side of the pallet picking vehicle.

4. The remote walking control system for pallet picking carts according to claim 3, characterized in that: The anti-collision assembly also includes a pull rope switch (1) and a trigger rope (3). The trigger rope (3) passes through the openings of all the anti-collision ears (2) away from the end of the pallet picking vehicle, and its two ends are fixedly connected to the pull rope switches (1) on both sides of the pallet picking vehicle, ensuring that the trigger rope (3) is in a taut state. The pull rope switch (1) is electrically connected to the power supply circuit of the traction motor and the steering motor, and is configured to immediately cut off the power supply circuit of the traction motor and the steering motor when triggered.

5. The remote walking control system for pallet picking carts according to claim 1, characterized in that: The remote terminal includes a mobile phone, PC, or tablet computer.

6. The remote walking control system for pallet picking carts according to claim 4, characterized in that: The specific model of the pull cord switch (1) is ES97Z11.

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