Box bottom detection device

Abstract

The utility model relates to the field of container detection, in particular to a container bottom detection device which comprises a base installed in the middle of a saddle beam of a remote control gantry crane, an area array laser radar facing the container bottom and a remote control terminal used for analyzing laser echoes received by the area array laser radar. The remote control terminal is in communication connection with the area array laser radar. According to the invention, the arrangement of the area array laser radar avoids the problem that the lens is blocked by water stains and fog and thus the recognition of workers is not clear, and improves the accuracy of the detection of the bottom of the container.

Description

Technical Field

[0001] This application relates to the field of container inspection, and in particular to a container bottom inspection device. Background Art

[0002] During container transportation, twist locks are typically installed on the bottom of the container to secure it to the transport vehicle. However, if these twist locks are not completely removed during container stacking, it can lead to serious accidents when the container is placed in the yard. Therefore, when stacking containers, workers need to check whether any twist locks on the bottom of the containers have been removed.

[0003] In related technologies, the bottom inspection of containers involves: when containers are lifted and stacked by a gantry crane, video monitoring shows the lifting process, and staff observe the keyholes on the bottom of the container through the video feed to determine if any keyholes have not been removed.

[0004] Regarding the aforementioned technologies, the inventors believe that in rainy or foggy weather with high air humidity, the monitoring lens may sometimes be obscured by water stains or fog, resulting in unclear video images and affecting the staff's judgment on whether the bottom of the box has a turnlock. There is still room for improvement. Utility Model Content

[0005] To address the issue that monitoring cameras are sometimes obscured by water or fog during rainy or foggy weather with high humidity, affecting staff's ability to determine whether the bottom of the container has a turnlock, this application provides a container bottom detection device.

[0006] The bottom detection device for a box provided in this application adopts the following technical solution:

[0007] A container bottom detection device includes a base installed in the middle of the saddle beam of a remote-controlled gantry crane, a surface array lidar facing the bottom of the container, and a remote control terminal for analyzing the laser echo received by the surface array lidar. The surface array lidar is mounted on the base, and the remote control terminal and the surface array lidar are communicatively connected.

[0008] By adopting the above technical solution, when the container is lifted, the area array lidar scans the bottom of the container at an angle upwards. When it encounters an obstacle, the laser point cloud generates an echo. The area array lidar transmits the received echo signal to the remote control terminal, which automatically analyzes whether there are any unremoved turnlocks on the bottom of the container. Compared with video surveillance of the container lifting and then having staff make judgments, the area array lidar avoids the problem of water stains and fog obscuring the lens, which would cause staff to have difficulty identifying the container, thus improving the accuracy of container bottom detection.

[0009] Optionally, it also includes a first mounting plate, a second mounting plate, and an angle adjustment assembly. The first mounting plate is disposed on the base, and the second mounting plate is hinged to the first mounting plate. The area array laser radar is fixedly connected to the side of the second mounting plate away from the first mounting plate. The angle adjustment assembly includes a connecting rod, a guide rail, and a locking block. The guide rail is fixedly connected to the first mounting plate, and the locking block is slidably connected to the guide rail to move closer to or further away from the second mounting plate. One end of the connecting rod is hinged to the side of the second mounting plate away from the first mounting plate, and the other end of the connecting rod is hinged to the locking block.

[0010] By adopting the above technical solution, when the locking block is pushed to move closer to the second mounting plate, one end of the connecting rod hinged to the locking block moves with the sliding of the locking block, and the other end of the connecting rod moves away from the base due to the restriction of the second mounting plate, so that the included angle between the second mounting plate and the first mounting plate becomes larger, thereby making the installation angle of the area array lidar adjustable, expanding the scanning range of the area array lidar, and improving the versatility of the detection device.

[0011] Optionally, both ends of the guide rail are fixedly connected to connecting plates, and the connecting plates are provided with screws. The screws and the guide rail are arranged in parallel. The two ends of the screws are respectively rotatably connected to the opposite side of the two connecting plates, and the screws are threaded through and connected to the locking block.

[0012] By adopting the above technical solution, the locking block is restricted by the guide rail and can only move along the length of the guide rail. When the screw is rotated, the locking block and the screw generate relative displacement along the length of the screw. Since the screw and the connecting plate are fixedly connected in the length of the screw, the locking block slides along the guide rail as the screw rotates. The displacement of the locking block driven by the screw improves the stability of the sliding of the locking block. On the other hand, since there is a large friction between the screw and the locking block, when the screw stops rotating, the locking block no longer slides, which improves the stability of the adjustment angle of locking the second mounting plate.

[0013] Optionally, one end of the screw passes through the connecting plate, and a handle is fixedly connected to the end of the screw passing through the connecting plate.

[0014] By adopting the above technical solution, since the screw diameter is small, a large force is required to drive the locking block to slide when rotating the screw. Compared with directly rotating the screw, the handle increases the radius that the operator needs to rotate when rotating the screw. When using the same force to rotate the screw, the screw with the handle can rotate at a larger angle, which improves the convenience of the user in rotating the screw.

[0015] Optionally, the connecting rod includes a first connecting part and a second connecting part. One end of the first connecting part is hinged to the locking block, and one end of the second connecting part is hinged to the second mounting plate. The other end of the second connecting part is provided with a through groove. The end of the first connecting part away from the locking block passes through the through groove. The side of the second connecting part away from the second mounting plate is provided with a plurality of through holes. The through holes and the through groove are connected. The plurality of through holes are arranged along the length direction of the second connecting part. A spring plunger is fixedly connected to the side of the first connecting part away from the locking block. The plunger of the spring plunger extends through one of the through holes to the outside of the second connecting part.

[0016] By adopting the above technical solution, the length of the connecting rod can be adjusted by the sliding structure of the first connecting part along the length direction of the second connecting part. When the first connecting part is stretched outward to the second connecting part, since the first connecting part is hinged to the first mounting plate, the second connecting part moves away from the first mounting plate, which further increases the tilt angle of the second mounting plate and improves the angle adjustment range of the second mounting plate.

[0017] Optionally, a limiting block is provided on the side of the first mounting plate away from the second mounting plate, and a long strip-shaped first guide groove is provided on the base. The limiting block passes through the first guide groove, and the first mounting plate is slidably connected to the base.

[0018] By adopting the above technical solution, when adjusting the tilt angle of the second mounting plate cannot make the area array lidar scan all the screw lock holes on the bottom of the storage box, the setting of the first mounting plate causes the second mounting plate to move towards the side closer to the container as the first mounting plate slides along the base, thereby enabling the area array lidar to scan all the screw lock holes on the bottom of the storage box and increasing the scanning range of the area array lidar.

[0019] Optionally, the base is provided with a plurality of positioning grooves, the positioning grooves are arranged along the sliding direction of the first mounting plate, the first mounting plate is provided with positioning holes, the first mounting plate is provided with positioning posts, and the positioning posts pass through the positioning holes and are inserted into one of the positioning grooves.

[0020] By adopting the above technical solution, the positioning post is inserted into the positioning groove, which restricts the sliding of the first mounting plate along the length direction of the first guide groove. When the first mounting plate is hit by an external impact, one side of the positioning post abuts against the side wall of the positioning groove near the impact force, and the first mounting plate cannot slide, thus improving the stability of the first mounting plate in a certain position on the base.

[0021] Optionally, the first mounting plate is provided with a locking rod, and a support lug is fixedly connected to the first mounting plate. The middle part of the locking rod is hinged to the support lug. One end of the locking rod is provided with a guide hole, which is set along the length direction of the locking rod. A rotating column is fixedly connected to the end of the positioning post away from the positioning groove. The rotating column passes through and slides in the guide hole so that the positioning post and the locking rod are rotatably connected.

[0022] By adopting the above technical solution, when the end of the locking rod away from the positioning post is rotated towards the side closer to the base, the end of the locking rod with the guide hole moves away from the base because the support lug provides the fulcrum for rotation. Since the rotating post passes through the guide hole, the rotating post drives the positioning post to move and lift away from the end of the slot, so that the positioning post and the positioning slot are disengaged, which improves the convenience for the staff to unlock the sliding lock of the first mounting plate.

[0023] Optionally, the locking rod has an abutment block hinged to one end with the guide hole. When the locking rod drives the positioning pin to disengage from the positioning groove, the side of the abutment block away from the locking rod abuts against the side of the first mounting plate away from the base.

[0024] By adopting the above technical solution, when the end of the locking rod with the guide hole moves away from the first mounting plate, the abutment block hinged to the side of the locking rod moves with the movement of the locking rod. The side of the abutment block away from the locking rod falls due to gravity. When the moving distance of the end of the locking rod with the guide hole is greater than the length of the abutment block, after the locking rod is released, the side of the abutment block away from the locking rod abuts against the first mounting plate. Due to the friction between the abutment block and the first mounting plate, the abutment block is not easy to slip, so as to maintain the position of the positioning post detached from the positioning groove, which improves the convenience of the operator to move the first mounting plate.

[0025] Optionally, a shield is fixedly connected to the second mounting plate. The shield covers the area array lidar, and the side of the shield near the connecting rod has an opening for the area array lidar to emit laser light.

[0026] By adopting the above technical solution, the opening of the shield avoids the window through which the laser is emitted by the area array lidar. The area array lidar is covered without affecting its scanning function, thus avoiding the impact of severe weather such as exposure to sunlight and improving its service life.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The use of area array lidar avoids the problem of water stains and fog obscuring the lens, which would cause unclear identification by the staff, thus improving the accuracy of container bottom inspection;

[0029] 2. The angle adjustment component allows for adjustment of the installation angle of the area array lidar, expanding its scanning range and improving the versatility of the detection device;

[0030] 3. The handle design increases the radius of rotation required for operators to turn the screw, reduces the force required to turn the screw at the same angle, and improves the ease of screw rotation for users. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a box bottom detection device in an embodiment of this application.

[0032] Figure 2 This is an exploded view of the first mounting plate and base in the embodiments of this application.

[0033] Figure 3 This is a front view of a box bottom detection device according to an embodiment of this application.

[0034] Figure 4 yes Figure 3 A cross-sectional view along the AA direction.

[0035] Figure 5 This is a schematic diagram of the locking component and the first mounting plate in the embodiments of this application.

[0036] Figure 6 This is a schematic diagram of the structure of the second mounting plate and the angle adjustment assembly in the embodiments of this application.

[0037] Figure 7 This is an exploded view of the first connecting portion and the second connecting portion in the embodiments of this application.

[0038] Figure 8 This is a schematic diagram of the structure of the locking block, guide rail, connecting plate and screw in the embodiments of this application.

[0039] Figure 9 This is an exploded view of the shield and area array lidar in the embodiments of this application.

[0040] Explanation of reference numerals in the attached drawings: 1. Base; 11. First guide groove; 12. Positioning groove; 2. Area array lidar; 21. Shielding cover; 3. Remote control terminal; 4. First mounting plate; 41. Limiting block; 42. Locking assembly; 421. Positioning post; 4211. Rotating post; 422. Locking rod; 4221. Guide hole; 423. Abutment block; 43. Positioning hole; 44. Support lug; 5. Second mounting plate; 6. Angle adjustment assembly; 61. Connecting rod; 611. First connecting part; 6111. Spring plunger; 612. Second connecting part; 6121. Through groove; 6122. Through hole; 62. Locking block; 63. Guide rail; 631. Second guide groove; 632. Connecting plate; 633. Screw; 6331. Handle. DETAILED DESCRIPTION

[0041] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0042] This application discloses a box bottom detection device.

[0043] Reference Figure 1 The container bottom detection device includes a base 1, a surface-array lidar 2, and a remote control terminal 3. The base 1 is fixedly connected to the middle of one side saddle beam of the remote-controlled gantry crane for mounting the surface-array lidar 2. The viewing window of the surface-array lidar 2 emits laser light towards the bottom of the container to scan it. The remote control terminal 3 communicates with the surface-array lidar 2 to analyze the laser echo received by the lidar 2.

[0044] Reference Figure 1 and Figure 2 A first mounting plate 4 is slidably connected to the base 1 for mounting the area array lidar 2. The base 1 has a long strip-shaped first guide groove 11 with a dovetail-shaped structure. A dovetail-shaped limiting block 41 is fixedly connected to the side of the first mounting plate 4 near the base 1. The limiting block 41 passes through and is slidably connected within the first guide groove 11. The first mounting plate 4 drives the area array lidar 2 to slide synchronously along the length direction of the first guide groove 11.

[0045] Reference Figure 3 and Figure 4 The first mounting plate 4 has a locking assembly 42 to lock the sliding of the first mounting plate 4. The locking assembly 42 includes a positioning post 421, a locking rod 422, and an abutment block 423. The first mounting plate 4 has a positioning hole 43, and the base 1 has a plurality of positioning grooves 12. The positioning grooves 12 are arranged along the sliding direction of the first mounting plate 4. The positioning post 421 passes through the positioning hole 43 and is inserted into one of the positioning grooves 12, so that when the detection device is subjected to an external impact, the first mounting plate 4 is restricted by the positioning post 421 inserted into the positioning groove 12 and does not shift.

[0046] Reference Figure 4 and Figure 5 A lug 44 is fixedly connected to the first mounting plate 4, and the middle part of the locking rod 422 is hinged to the lug 44. One side of the locking rod 422 has a guide hole 4221, which is arranged along the length of the locking rod 422. A rotating column 4211 is fixedly connected to the end of the positioning post 421 away from the positioning groove 12, and the rotating column 4211 passes through and slides within the guide hole 4221. When the locking rod 422 is rotated so that the side of the locking rod 422 with the guide hole 4221 moves away from the first mounting plate 4, the locking rod 422 drives the rotating column 4211 to move and lift, causing the positioning post 421 to disengage from the positioning groove 12, thereby allowing the first mounting plate 4 to continue sliding. The locking rod 422 has a guide groove on one side hinged to an abutment block 423. When the abutment block 423 abuts against the first mounting plate 4 on the side away from the locking rod 422, the side of the locking rod 422 with the guide hole 4221 remains away from the first mounting plate 4. At this time, the positioning pin 421 disengages from the positioning groove 12, and the first mounting plate 4 slides freely in the first guide groove 11.

[0047] Reference Figure 6 A second mounting plate 5 is hinged to a first mounting plate 4. The area array lidar 2 is fixedly connected to the side of the second mounting plate 5 away from the first mounting plate 4, allowing the area array lidar 2 to face different angles as the second mounting plate 5 rotates. To fix the second mounting plate 5 after rotation, an angle adjustment assembly 6 is fixedly connected to the first mounting plate 4. The angle adjustment assembly 6 includes a connecting rod 61, a locking block 62, and a guide rail 63. Taking two guide rails 63 as an example, both guide rails 63 are fixedly connected to the first mounting plate 4 along the sliding direction of the first mounting plate 4. Each guide rail 63 has a second guide groove 631, located on opposite sides of the two guide rails 63, arranged along the length of the guide rail 63. The two ends of the locking block 62 are respectively inserted through and slidably connected within the two second guide grooves 631, allowing the locking block 62 to slide between the two guide rails 63 along the length of the guide rail 63. One end of the connecting rod 61 is hinged to the locking block 62 on the side away from the first mounting plate 4, and the other end of the connecting rod 61 is hinged to the second mounting plate 5 on the side away from the first mounting plate 4, so as to cooperate with the locking block 62 to adjust the tilt angle of the second mounting plate 5. When the locking block 62 moves to the side away from the second mounting plate 5, the tilt angle of the second mounting plate 5 increases.

[0048] Reference Figure 6 and Figure 7To increase the upper limit of the tilt angle of the second mounting plate 5, the connecting rod 61 has an adjustable length. The connecting rod 61 includes a first connecting portion 611 and a second connecting portion 612. The first connecting portion 611 is hinged to the locking block 62, and the second connecting portion 612 is hinged to the second mounting plate 5. The end of the second connecting portion 612 away from the second mounting plate 5 has a through groove 6121. The end of the first connecting portion 611 away from the locking block 62 passes through and slides within the through groove 6121, allowing the first connecting portion 611 and the second connecting portion 612 to move closer or further apart along the axial direction, thereby adjusting the overall length of the connecting rod 61. A spring plunger 6111 is fixedly connected to the side of the first connecting portion 611 away from the locking block 62. The side wall of the through groove 6121 has several through holes 6122 extending to the outside of the second connecting portion 612. The through holes 6122 are arranged along the length of the second connecting portion 612 for the spring plunger 6111 to pass through. When the plunger of the spring plunger 6111 is inserted into one of the through holes 6122, the displacement of the second connecting part 612 along its own length direction is locked, and the length of the connecting rod 61 no longer changes.

[0049] Reference Figure 8 Both ends of the guide rail 63 are fixedly connected to connecting plates 632. The connecting plate 632 at the same end of the guide rail 63 is fixedly connected to both guide rails 63. The connecting plate 632 has a screw 633. The two ends of the screw 633 are rotatably connected to the two connecting plates 632 respectively. The screw 633 and the guide rail 63 are parallel to each other. The screw 633 passes through the locking block 62 and is threadedly connected to the locking block 62, so as to drive the sliding of the locking block 62 by rotating the screw 633. In order to make it easier to rotate the screw 633, a handle 6331 is fixedly connected to the screw 633. One side of the screw 633 extends through the connecting plate 632 and beyond the connecting plate 632. The side of the screw 633 extending beyond the connecting plate 632 is fixedly connected to the handle 6331.

[0050] Reference Figure 9 To reduce wear and tear on the area array lidar 2 during use, it is covered with a shield 21 to mitigate the effects of severe weather conditions such as direct sunlight. The shield 21 has an opening with a window facing the area array lidar 2 to prevent obstruction and ensure its scanning capabilities.

[0051] The implementation principle of the box bottom detection device in this application embodiment is as follows: Pressing the locking rod 422 causes the positioning post 421 to disengage from the positioning groove 12, thereby unlocking the first mounting plate 4. Pushing the first mounting plate 4 to move towards the side closer to the miscellaneous box to a suitable position, pulling open the abutment block 423 causes the positioning post 421 to fall into the corresponding positioning groove 12, thereby locking the first mounting plate 4. Rotating the handle 6331 drives the locking block 62 to slide, adjusting the second mounting plate 5 to a suitable tilt angle, so that the area array laser radar 2 faces the miscellaneous box. The bottom of the container; if the locking block 62 slides to the side close to the second mounting plate 5, the area array lidar 2 is still insufficient to fully scan the bottom of the container. Press the spring plunger 6111 to pull the second connecting part 612 away from the first connecting part 611, so that the second mounting plate 5 is adjusted to a suitable tilt angle; then the area array lidar 2 emits a laser point cloud and receives the echo. The remote control terminal 3 automatically analyzes whether the bottom of the container has an unremoved turnlock based on the echo signal transmitted by the area array lidar 2.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A box bottom detection device, characterized in that: It includes a base (1) installed in the middle of the saddle beam of the remote-controlled gantry crane, a surface array lidar (2) facing the bottom of the container, and a remote control terminal (3) for analyzing the laser echo received by the surface array lidar (2). The surface array lidar (2) is mounted on the base (1), and the remote control terminal (3) and the surface array lidar (2) are connected in communication.

2. The bottom detection device according to claim 1, characterized in that: It also includes a first mounting plate (4), a second mounting plate (5), and an angle adjustment assembly (6). The first mounting plate (4) is disposed on the base (1), and the second mounting plate (5) is hinged to the first mounting plate (4). The area array laser radar (2) is fixedly connected to the side of the second mounting plate (5) away from the first mounting plate (4). The angle adjustment assembly (6) includes a connecting rod (61), a guide rail (63), and a locking block (62). The guide rail (63) is fixedly connected to the first mounting plate (4), and the locking block (62) is slidably connected to the guide rail (63) to be close to or away from the second mounting plate (5). One end of the connecting rod (61) is hinged to the side of the second mounting plate (5) away from the first mounting plate (4), and the other end of the connecting rod (61) is hinged to the locking block (62).

3. The bottom detection device according to claim 2, characterized in that: Both ends of the guide rail (63) are fixedly connected to connecting plates (632). The connecting plates (632) are provided with screws (633). The screws (633) and the guide rail (63) are arranged in parallel. The two ends of the screws (633) are respectively rotatably connected to the opposite side of the two connecting plates (632). The screws (633) are threaded through and connected to the locking block (62).

4. The bottom detection device according to claim 3, characterized in that: One end of the screw (633) passes through the connecting plate (632), and a handle (6331) is fixedly connected to the end of the screw (633) that passes through the connecting plate (632).

5. The bottom detection device according to claim 2, characterized in that: The connecting rod (61) includes a first connecting part (611) and a second connecting part (612). One end of the first connecting part (611) is hinged to the locking block (62), and one end of the second connecting part (612) is hinged to the second mounting plate (5). The other end of the second connecting part (612) is provided with a through groove (6121). The end of the first connecting part (611) away from the locking block (62) passes through the through groove (6121), and the end of the second connecting part (612) away from the locking block (62) passes through the through groove (6121). The second mounting plate (5) has a plurality of through holes (6122) on one side. The through holes (6122) are connected to the through groove (6121). The plurality of through holes (6122) are arranged along the length of the second connecting part (612). A spring plunger (6111) is fixedly connected to the side of the first connecting part (611) away from the locking block (62). The plunger of the spring plunger (6111) extends through one of the through holes (6122) to the outside of the second connecting part (612).

6. The bottom detection device according to claim 2, characterized in that: The first mounting plate (4) has a limiting block (41) on the side away from the second mounting plate (5). The base (1) has a long strip-shaped first guide groove (11). The limiting block (41) passes through the first guide groove (11). The first mounting plate (4) is slidably connected to the base (1).

7. The bottom detection device according to claim 6, characterized in that: The base (1) is provided with a plurality of positioning grooves (12), the positioning grooves (12) are arranged along the sliding direction of the first mounting plate (4), the first mounting plate (4) is provided with positioning holes (43), the first mounting plate (4) is provided with positioning posts (421), the positioning posts (421) pass through the positioning holes (43) and are inserted into one of the positioning grooves (12).

8. The bottom detection device according to claim 7, characterized in that: The first mounting plate (4) is provided with a locking rod (422), and a support lug (44) is fixedly connected to the first mounting plate (4). The middle part of the locking rod (422) is hinged to the support lug (44). One end of the locking rod (422) is provided with a guide hole (4221). The guide hole (4221) is set along the length direction of the locking rod (422). The end of the positioning post (421) away from the positioning groove (12) is fixedly connected with a rotating post (4211). The rotating post (4211) passes through and slides in the guide hole (4221) so that the positioning post (421) and the locking rod (422) are rotatably connected.

9. The bottom detection device according to claim 8, characterized in that: The locking rod (422) has a guide hole (4221) at one end hinged to an abutment block (423). When the locking rod (422) drives the positioning pin (421) to disengage from the positioning groove (12), the side of the abutment block (423) away from the locking rod (422) abuts against the side of the first mounting plate (4) away from the base (1).

10. A box bottom detection device according to claim 3, characterized in that: A shield (21) is fixedly connected to the second mounting plate (5). The shield (21) covers the area array laser radar (2). The shield (21) has an opening on the side near the connecting rod (61) for the area array laser radar (2) to emit lasers.

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