Crossing container truck deadbolt state detection device
By using a camera and supplementary lighting system, the problem of missed detections by laser scanners under obstructed light conditions has been solved, enabling accurate detection in different lighting environments.
Patent Information
- Application Number
- CN202520223078.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing laser scanning technology is prone to missed detections when light is obstructed, which affects the detection effect of the locking and twisting status of trucks at level crossings.
The system combines a camera with a supplementary light and a motor. The supplementary light provides physical illumination in various lighting conditions, while the motor adjusts the angle of the supplementary light to ensure that the camera can clearly capture the status of the truck's locking mechanism.
Ensure the camera can clearly capture the status of the truck's locking mechanism under various lighting conditions to avoid missed detections and improve detection efficiency.
Smart Images

Figure CN223624111U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of level crossing truck lock torque status detection technology, and in particular to a level crossing truck lock torque status detection device. Background Technology
[0002] The level crossing truck lock-twist status detection device is a device used to detect the lock-twist status of container trucks at level crossings in ports. Currently, it uses a laser scanner to detect the real-time position of containers, trucks, etc., and realizes the operation control of the lifting mechanism according to the safety control strategy to achieve the anti-lifting function of trucks. Its design aims to improve the safety and efficiency of container loading and unloading operations in ports or logistics centers.
[0003] However, laser scanning technology is highly dependent on environmental stability. When light is obstructed, it is easy to miss detections, which in turn affects the detection effect on the locking and twisting status of trucks at level crossings.
[0004] Therefore, a level crossing truck lock torque state detection device is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a level crossing truck lock torque status detection device to solve the above-mentioned problems, thereby improving the problem that laser scanners are prone to missing detections when light is obstructed.
[0006] This utility model achieves the above-mentioned objective through the following technical solution: a level crossing truck lock / twist status detection device, comprising: a mounting frame; and a detection mechanism. The detection mechanism includes a camera fixedly connected to the upper surface of the mounting frame. A first motor is fixedly connected to both ends of the mounting frame. A movable frame is fixedly connected to the output shaft of the first motor. A supplementary light is hinged to the upper surface of the movable frame. A second motor is fixedly connected to one side of the supplementary light, and the surface of the second motor is fixedly connected to one side of the movable frame. The supplementary light enables the camera to provide physical supplementary lighting in various lighting environments, such as nighttime, backlighting, and direct strong light, thereby ensuring that the camera clearly captures the truck lock / twist status, thus avoiding missed detections and ensuring the detection effect of the level crossing truck lock / twist status. The first and second motors automatically adjust the illumination angle of the supplementary light, improving the supplementary lighting effect on the camera.
[0007] Preferably, support blocks are fixedly connected to both sides of the top of the mounting bracket, and arc-shaped blocks are fixedly connected to one side of the movable frame. Moving blocks are fixedly connected to the lower end of the surface of the fill light from both the movable frame and the fill light. The arc-shaped blocks and moving blocks limit the rotation angle of the fill light, preventing it from rotating too widely.
[0008] Preferably, the lower ends of the surfaces of the movable frame and the supplementary light are both fixedly connected with ring-shaped rubber blocks, and the support block and the inner wall of the movable frame are both slidably connected with push blocks.
[0009] Preferably, a spring is fixedly connected to the end of the push block, with the other end of one spring fixedly connected to one side of the support block, and the other end of the other spring fixedly connected to the end of the movable frame. Through the springs, push block, and rubber block, the resistance to the rotation of the supplementary light is increased, ensuring the accuracy of adjusting the illumination angle of the supplementary light.
[0010] Preferably, a sunshade is fixedly connected to the upper surface of the mounting bracket. The sunshade blocks strong light from reaching the camera, reducing the impact of strong light on camera shooting.
[0011] Preferably, a slip ring is fixedly connected to the end of the movable frame, and the lower end of the slip ring is slidably connected to the end of the mounting bracket. The slip ring provides support and limits the movable frame, ensuring its stability during rotation.
[0012] Preferably, a baffle is fixedly connected to one end of the push block.
[0013] The beneficial effects of this utility model are:
[0014] 1. By using supplementary lighting, the camera can provide physical supplementary lighting in various lighting environments, such as at night, backlight, and direct strong light. Compared with existing laser scanners, which are prone to missed detections when light is obstructed, this method ensures that the camera can clearly capture the status of the truck lock button, thereby ensuring the detection effect of the truck lock button status at the level crossing; through the first motor and the second motor, the illumination angle of the supplementary lighting is automatically adjusted, improving the supplementary lighting effect on the camera.
[0015] 2. By using arc-shaped blocks and moving blocks, the rotation angle of the fill light is limited to prevent the rotation angle of the fill light from being too large. By using springs, push blocks and rubber blocks, the resistance to the rotation of the fill light is increased, ensuring the accuracy of adjusting the illumination angle of the fill light. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a sectional view of the mounting bracket of this utility model;
[0018] Figure 3 for Figure 2 Enlarged view of A in the middle;
[0019] Figure 4 for Figure 3 A magnified view of B in the middle.
[0020] In the diagram: 1. Mounting frame; 2. Detection mechanism; 21. Camera; 22. Fill light; 23. First motor; 24. Movable frame; 25. Second motor; 26. Rubber block; 27. Push block; 28. Spring; 29. Arc block; 210. Moving block; 211. Baffle plate; 212. Slip ring; 213. Sunshade; 214. Support block. 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] In practical implementation: such as Figure 1-4 As shown, a level crossing truck lock torque status detection device includes: a mounting frame 1; a detection mechanism 2, the detection mechanism 2 including a camera 21 fixedly connected to the upper surface of the mounting frame 1, a first motor 23 fixedly connected to both sides of the end of the mounting frame 1, a movable frame 24 fixedly connected to the output shaft of the first motor 23, a supplementary light 22 hinged to the upper surface of the movable frame 24, a second motor 25 fixedly connected to one side of the supplementary light 22, and the surface of the second motor 25 fixedly connected to one side of the movable frame 24.
[0023] The camera 21 includes a wide-angle camera and a fixed-focus camera, and the fill light 22 is a high-power light fixture with a power range of 150W to 400W.
[0024] Both the first motor 23 and the second motor 25 are servo motors. Servo motors can control speed and have very accurate positioning. They can convert voltage signals into torque and speed to drive the controlled object. The rotor speed of the servo motor is controlled by the input signal and can respond quickly. In automatic control systems, they are used as actuators and have characteristics such as small electromechanical time constant and high linearity. They can convert the received electrical signals into angular displacement or angular velocity output on the motor shaft.
[0025] When the locking status of a container truck needs to be checked, the mounting bracket 1 is installed at the end of the robotic arm using bolts, and the camera 21 is automatically activated. This allows the wide-angle and fixed-focus cameras to calibrate and correct the image, capturing the entire scene. This reduces the impact of truck tilt when stopped and multi-angle shooting during robotic arm operation. The system detects the lock hole position in the image, generates relative coordinates, and uses a control algorithm to drive the robotic arm to the designated position. This allows the detection system to automatically capture lock holes at different locations. The detected signal is then wirelessly transmitted to the display screen, which visually indicates the location of the lock button that has not been removed. A voice prompt is also provided via speaker to help the driver quickly locate the lock button that has not been opened. This ensures that all lock buttons are open before the container truck enters the site, thus enabling the detection of the truck's locking status.
[0026] When the camera 21 needs to adjust the light, the fill light 22 is automatically turned on to provide supplementary light in the shooting environment, so that the camera 21 can still effectively capture the object under backlight conditions and ensure that the camera 21 can clearly capture the locking status of the truck.
[0027] like Figure 3-4 As shown, support blocks 214 are fixedly connected to both sides of the top of the mounting frame 1. Arc-shaped blocks 29 are fixedly connected to one side of the support blocks 214 and the movable frame 24. Moving blocks 210 are fixedly connected to the lower surface of the movable frame 24 and the supplementary light 22. Annularly distributed rubber blocks 26 are fixedly connected to the lower surface of the movable frame 24 and the supplementary light 22. Push blocks 27 are slidably connected to the inner wall of the support blocks 214 and the movable frame 24. Springs 28 are fixedly connected to the end of the push blocks 27. The other end of one spring 28 is fixedly connected to one side of the support block 214, and the other end of the other spring 28 is fixedly connected to the end of the movable frame 24. A baffle 211 is fixedly connected to one end of the push blocks 27.
[0028] When the fill light angle of the fill light 22 needs to be adjusted, the first motor 23 is automatically turned on. The output shaft of the first motor 23 rotates, driving the movable frame 24 to rotate. The rotation of the movable frame 24 drives the fill light 22 to rotate. The rotation of the movable frame 24 drives multiple rubber blocks 26 to rotate on the push block 27. As the rubber blocks 26 rotate, they push the push block 27 to compress the spring 28, increasing the resistance to the rotation of the movable frame 24. This results in a smaller rotation amplitude of the fill light 22, thus ensuring that the fill light angle of the adjusted fill light 22 is accurate. Following the above process, the second motor 25 can be turned on automatically. After adjusting to the appropriate angle, the first motor 23 and the second motor 25 are automatically turned off.
[0029] like Figure 2 As shown, a sunshade 213 is fixedly connected to the upper surface of the mounting bracket 1.
[0030] like Figure 3As shown, a slip ring 212 is fixedly connected to the end of the movable frame 24, and the lower end of the surface of the slip ring 212 is slidably connected to the end of the mounting bracket 1.
[0031] In use, this invention automatically activates the supplementary light 22 and camera 21 to provide supplementary lighting in the shooting environment, ensuring that the camera 21 can still effectively capture the overall image even under backlight conditions. It detects the keyhole position within the image, generates relative coordinates, and uses a control algorithm to drive the robotic arm to the designated position. This allows the detection system to automatically capture keyholes at different locations. The detected signals are then wirelessly transmitted to a display screen, which visually indicates the location of the currently unlocked key. A voice prompt is also provided via speaker to help the driver quickly locate the unlocked key. This ensures that all keyholes are unlocked before the truck enters the site, thus allowing for the detection of the truck's locking mechanism.
[0032] It should be noted that the mounting bracket 1, fill light 22, camera 21, sunshade 213, first motor 23 and second motor 25 mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the fill light 22, camera 21, first motor 23 and second motor 25 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.
[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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. A device for detecting the torsion state of a truck lock at a level crossing, characterized in that, include: Mounting bracket (1); The detection mechanism (2) includes a camera (21) fixedly connected to the upper surface of the mounting frame (1). A first motor (23) is fixedly connected to both sides of the end of the mounting frame (1). A movable frame (24) is fixedly connected to the output shaft of the first motor (23). A supplementary light (22) is hinged to the upper surface of the movable frame (24). A second motor (25) is fixedly connected to one side of the supplementary light (22). The surface of the second motor (25) is fixedly connected to one side of the movable frame (24).
2. The crossing truck lock torque status detection device according to claim 1, characterized in that: The top two sides of the mounting bracket (1) are fixedly connected with support blocks (214), and the support blocks (214) and one side of the movable frame (24) are fixedly connected with arc-shaped blocks (29). The movable frame (24) and the lower surface of the supplementary light (22) are fixedly connected with moving blocks (210).
3. The crossing truck lock torque status detection device according to claim 2, characterized in that: The lower ends of the surfaces of the movable frame (24) and the supplementary light (22) are both fixedly connected with ring-shaped rubber blocks (26), and the support block (214) and the inner wall of the movable frame (24) are both slidably connected with push blocks (27).
4. The crossing truck lock torque status detection device according to claim 3, characterized in that: The end of the push block (27) is fixedly connected to a spring (28), one end of which is fixedly connected to one side of the support block (214), and the other end of which is fixedly connected to the end of the movable frame (24).
5. The crossing truck lock torque status detection device according to claim 1, characterized in that: A sunshade (213) is fixedly connected to the upper surface of the mounting bracket (1).
6. The crossing truck lock torque status detection device according to claim 1, characterized in that: The end of the movable frame (24) is fixedly connected to a slip ring (212), and the lower end of the surface of the slip ring (212) is slidably connected to the end of the mounting bracket (1).
7. The crossing truck lock torque status detection device according to claim 3, characterized in that: One end of the push block (27) is fixedly connected to a baffle (211).