A container top plate size detection device and working method thereof

Abstract

The present invention discloses a container roof size detection device and a working method thereof, and belongs to the technical field of containers. The container roof size detection device includes a controller, a roller table, a bracket, a fixing mechanism, a high-speed linear slide, and a laser detection sensor; the controller is electrically connected to the roller table, the fixing mechanism, the high-speed linear slide, and the laser detection sensor respectively, the roller table is used to convey the container roof, the fixing mechanism is arranged on the side of the roller table, and is used to fix the container roof, the bracket is erected on the roller table, the high-speed linear slide is arranged on the bracket, and the laser detection sensor is installed on the high-speed linear slide and the bracket, and is used to measure the length, width, and wave depth of the container roof. The present invention realizes automatic detection of the size of large-sized container roofs, with high detection accuracy and efficiency, good stability and continuity, low cost, good universality, and is suitable for popularization and use.

Description

Technical Field

[0001] The invention belongs to the technical field of containers, and in particular relates to a container top plate size detection device and a working method thereof. Background Art

[0002] At present, the size detection of container roof mainly includes the measurement of length, width and wave depth, which is generally measured by manual measurement or visual inspection technology. However, manual measurement will cause a waste of human resources; while visual inspection technology requires objects to be within the same field of view, and is mainly used in the size measurement of small-sized parts. For the measurement of larger parts, CCD area array profile scanners or multi-camera photography are mainly used to reconstruct objects in one picture for contour detection, and then the size of the measured object is measured. Since it is difficult to resolve the contradiction between field of view and accuracy, the measurement error is large. In addition, the production and inspection environment of container roof is complex and harsh, and visual inspection technology is easily affected by the environment (dust, humidity, etc.), which reduces the measurement performance and service life. Visual inspection technology is also expensive and difficult to promote. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a container top plate size detection device and a working method thereof.

[0004] To achieve the above object, the present invention is implemented by adopting the following scheme:

[0005] The present invention provides a device for detecting the size of a container roof, comprising a controller, a roller table, a bracket, a fixing mechanism, a high-speed linear slide and a laser detection sensor; the controller is electrically connected to the roller table, the fixing mechanism, the high-speed linear slide and the laser detection sensor respectively, the roller table is used to convey the container roof, the fixing mechanism is arranged on the side of the roller table and is used to fix the container roof, the bracket is erected on the roller table, the high-speed linear slide is arranged on the bracket, and the laser detection sensor is installed on the high-speed linear slide and the bracket and is used to measure the length, width and wave depth of the container roof.

[0006] Optionally, the fixing mechanism includes a lifting lever, a lifting cylinder, a fixed lever and a tightening cylinder; the lifting lever and the lifting cylinder are arranged on the output side of the roller table, the output end of the lifting cylinder is connected to the lifting lever, the lifting lever is higher than the container top plate when raised, and lower than the container top plate when lowered; the fixed lever and the tightening cylinder are arranged on the side of the roller table and are respectively located on both sides of the container top plate, and the output end of the tightening cylinder and the fixed lever are both higher than the container top plate.

[0007] Optionally, the high-speed linear slide is arranged at the bottom of one side of the bracket away from the lifting lever and the fixed lever.

[0008] Optionally, the laser detection sensor includes a laser edge detection sensor, which is mounted on a high-speed linear slide and is used to measure the length and width of a container roof.

[0009] Optionally, it also includes a wave depth measuring mother rod, which is arranged on a bracket. The laser detection sensor includes a laser distance detection sensor, which is installed under the wave depth measuring mother rod. The laser distance detection sensor is facing the raised part or flat part on the container top plate, and is used to measure the wave depth of the container top plate.

[0010] Optionally, it also includes an adjustment mechanism, the adjustment structure includes an adjustment rod and a mounting plate, the adjustment rod is threadedly connected to the mounting plate, the adjustment rod is movably connected to the wave depth measurement mother rod, and the laser distance detection sensor is fixedly mounted on the mounting plate.

[0011] Optionally, a clamping mechanism is also included, which is electrically connected to the controller. The clamping mechanism is arranged on the bracket, and the clamping mechanism includes a pressing cylinder for clamping and fixing the container top plate.

[0012] Optionally, it also includes a touch display screen, which is electrically connected to the controller and is used to receive container top plate standard length, width, wave depth and container top plate size detection instructions and display container top plate length, width and wave depth detection results.

[0013] Optionally, a photoelectric switch is further included. The photoelectric switch is arranged under the bracket and is electrically connected to the controller to detect whether the top plate of the container reaches a preset size detection position.

[0014] The present invention also provides a working method of the above container roof size detection device, comprising:

[0015] The touch screen receives the length, width and wave depth of any container top plate, and the controller saves the length, width and wave depth of any container top plate;

[0016] The roller table transports any container top plate to the bottom of the bracket. When the photoelectric switch detects that any container top plate is in place, the lifting cylinder raises the lifting lever to block any container top plate, the roller table stops running, the tightening cylinder extends to push any container top plate against the fixed lever until it is tightened, and the pressing cylinder extends to press and fix any container top plate;

[0017] The laser distance detection sensor under the wave depth measurement mother rod measures any container top plate to obtain the measured wave depth of any container top plate, and the controller or adjustment mechanism calibrates the laser distance detection sensor according to the measured wave depth of any container top plate and the wave depth of any container top plate;

[0018] The high-speed linear slide drives the laser edge detection sensor to move until the laser edge detection sensor detects an edge signal. The laser edge detection sensor measures the distance between the origin of the high-speed linear slide and the long and wide edges of any container top plate and then returns to its original position. The laser edge detection sensor sends the distance between the origin of the high-speed linear slide and the long and wide edges of any container top plate to the controller for storage. The pressing cylinder and the tightening cylinder retract, the lifting cylinder retracts the lifting lever to release any container top plate, and the roller table re-operates to output any container top plate.

[0019] The touch screen receives the standard length, standard width and standard wave depth of the container top plate, and the controller saves the standard length, standard width and standard wave depth of the container top plate;

[0020] The roller table transports the top plate of the container to be tested to the bottom of the bracket. When the photoelectric switch detects that the top plate of the container to be tested is in place, the lifting cylinder raises the lifting lever to block the top plate of the container to be tested, the roller table stops running, the tightening cylinder extends to push the top plate of the container to be tested against the fixed lever until it is tightened, and the pressing cylinder extends to press and fix the top plate of the container to be tested;

[0021] The laser distance detection sensor under the wave depth measurement mother rod measures the wave depth of the container top plate to be measured, and the laser distance detection sensor sends the wave depth of the container top plate to be measured to the controller for storage. The controller subtracts the wave depth of the container top plate to be measured from the standard wave depth of the container top plate to obtain the wave depth difference;

[0022] The high-speed linear slide drives the laser edge detection sensor to move until the laser edge detection sensor detects an edge signal. The laser edge detection sensor measures the distance between the origin of the high-speed linear slide and the long and wide edges of the top plate of the container to be tested and then returns to its original position. The laser edge detection sensor sends the distance between the origin of the high-speed linear slide and the long and wide edges of the top plate of the container to be tested to the controller for storage. The controller calculates the length and width of the top plate of the container to be tested according to the calculation formula of the length and width of the top plate of the container to be tested. The controller subtracts the length and width of the top plate of the container to be tested from the standard length and standard width of the container top plate to obtain the length difference and width difference. The controller sends the length, width, wave depth and length difference, width difference and wave depth difference of the top plate of the container to be tested to the touch display screen for display, the pressing cylinder and the tightening cylinder retract, the lifting cylinder retracts the lifting lever to release the top plate of the container to be tested, and the roller table reruns to output the top plate of the container to be tested;

[0023] Among them, the calculation formulas for the length and width of the container top plate to be tested are respectively: the length of the container top plate to be tested = the length of any container top plate + the distance between the origin of the high-speed linear slide and the wide edge of any container top plate - the distance between the origin of the high-speed linear slide and the wide edge of the container top plate to be tested; the width of the container top plate to be tested = the width of any container top plate + the distance between the origin of the high-speed linear slide and the long edge of any container top plate - the distance between the origin of the high-speed linear slide and the long edge of the container top plate to be tested.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention controls the roller table to convey the container roof through a controller, the fixing mechanism to fix the container roof, the laser detection sensor on the bracket to measure the wave depth of the container roof, and the high-speed linear slide to drive the laser detection sensor to move to measure the length and width of the container roof, thereby realizing automatic detection of the size of large-sized container roofs. Laser measurement is combined with the overhead installation method of the laser detection sensor, which is more suitable for the complex and harsh production inspection environment of the container roof than visual inspection technology. It has high inspection accuracy and efficiency, good stability and continuity, and low cost. Any container roof can be used for verification and inspection, has good universality, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic front view of the structure of a container top plate size detection device provided by an embodiment of the present invention;

[0026] Figure 2 It is a schematic structural side view of a container roof size detection device provided by an embodiment of the present invention;

[0027] Figure 3 It is a schematic top view of the structure of a container top plate size detection device provided by an embodiment of the present invention;

[0028] Figure 4 is a flow chart of a container top plate size detection method provided by an embodiment of the present invention;

[0029] In the figure: 1. Roller table; 2. Bracket; 3. High-speed linear slide; 4. Laser edge detection sensor; 5. Pressing cylinder; 6. Lifting lever; 7. Lifting cylinder; 8. Touch screen; 9. Fixed lever; 10. Photoelectric switch; 11. Wave depth measurement mother rod; 12. Adjusting rod; 13. Mounting plate; 14. Laser distance detection sensor; 15. Tightening cylinder. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] Embodiment 1:

[0034] like Figures 1 to 3 As shown, this embodiment provides a container roof size detection device, including a controller, a roller table 1, a bracket 2, a fixing mechanism, a high-speed linear slide 3 and a laser detection sensor. The controller is electrically connected to the roller table 1, the fixing mechanism, the high-speed linear slide 3 and the laser detection sensor, respectively, and is used to execute the container roof size detection instruction to control the roller table 1, the fixing mechanism, the high-speed linear slide 3 and the laser detection sensor to operate in coordination. The roller table 1 is used to transport the container roof, the fixing mechanism is arranged on the side of the roller table 1, and is used to fix the container roof, the bracket 2 is mounted on the roller table 1, the high-speed linear slide 3 is arranged on the bracket 2, and the laser detection sensor is installed on the high-speed linear slide 3 and the bracket 2, and is used to measure the length, width and wave depth of the container roof.

[0035] Specifically, the fixing mechanism includes a lifting lever 6, a lifting cylinder 7, a fixed lever 9 and a tightening cylinder 15; the lifting lever 6 and the lifting cylinder 7 are arranged on the output side of the roller table 1, and the output end of the lifting cylinder 7 is connected to the lifting lever 6. When the lifting lever 6 is raised, it is higher than the container top plate, and when it is lowered, it is lower than the container top plate. When the lifting lever 6 is raised, it blocks the container top plate at the output side of the roller table 1 to implement size detection. When the lifting lever 6 is lowered, the container top plate that has completed the size detection is smoothly output from the roller table 1; the fixed lever 9 and the tightening cylinder 15 are arranged on the output side of the roller table 1, and the lifting lever 6 and the lifting cylinder 7 are arranged on the output side of the roller table 1. The tightening cylinder 15 is arranged on the side of the roller table 1 and is respectively located on both sides of the container top plate flow direction. The output end of the tightening cylinder 15 and the fixed gear rod 9 are both higher than the container top plate. The output end of the tightening cylinder 15 is connected with the top plate. When the lifting gear rod 6 is raised to block the container baffle, the tightening cylinder 15 extends the top plate of its output end to push the container top plate to the opposite fixed gear rod 9 until it is tightened. When the container top plate completes the size detection, the tightening cylinder 15 retracts the top plate of its output end to release the container top plate so that it can be smoothly output from the roller table 1. A clamping mechanism is also arranged on the bracket 2. The clamping mechanism is electrically connected to the controller. The clamping mechanism includes a pressing cylinder 5, a total of four groups are evenly distributed on the bracket 2, and a soft clamping member is arranged on the output end of the pressing cylinder 5. When the pressing cylinder 5 is extended, it presses the fixed container top plate to flatten the container top plate to reduce the wave depth measurement error. The roller table 1, the fixing mechanism and the clamping mechanism work together to make the container top plate size detection process efficient and continuous.

[0036] The high-speed linear slide 3 is arranged at the bottom of one side of the bracket 2 away from the lifting lever 6 and the fixed lever 9, with a total of four groups, two groups on one side. The laser detection sensor includes a laser edge detection sensor 4, which is installed on the high-speed linear slide 3 and is used to measure the length and width of the container roof. The high-speed linear slide 3 is composed of a mounting base, a servo motor, a screw, a moving part and an origin switch. The servo motor is installed at one end of the mounting base, and its output end is connected to the screw. The screw is rotatably connected to the mounting base, and the moving part is threadedly connected to the screw. The laser edge detection sensor 4 is installed on the moving part, and the origin switch is installed on the mounting base. The servo motor and the origin switch are electrically connected to the controller respectively. The high-speed linear slide 3 is arranged at the bottom of the bracket 2, so that its screw and laser edge detection sensor 4 are hidden under the shading plate (mounting base) of the high-speed linear slide 3. The overhead installation avoids moisture and dust from affecting the movement and detection performance, thereby improving the stability of the device.

[0037] The bracket 2 is provided with a wave depth measurement mother bar 11, and the laser detection sensor includes a laser distance detection sensor 14. The laser distance detection sensor 14 is installed under the wave depth measurement mother bar 11. The laser distance detection sensor 14 is directly opposite to the raised part or flat part on the container top plate, and is used to measure the wave depth of the container top plate, where wave depth = wave trough - wave peak. The laser distance detection sensor 14 is installed on the wave depth measurement mother bar 11 through an adjustment mechanism, and the adjustment mechanism is used to adjust the laser distance detection sensor 14 horizontally and vertically. The adjustment structure includes an adjustment rod 12 and a mounting plate 13, the adjustment rod 12 is threadedly connected to the mounting plate 13, the adjustment rod 12 is movably connected to the wave depth measurement mother bar 11, and the laser distance detection sensor 14 is fixedly mounted on the mounting plate 13. The wave depth measurement mother bar 11 can be made of aluminum profile, and the adjustment rod 12 can be made of bolts. The bolts (adjustment rod 12) are threadedly connected to the upper panel of the mounting plate 13, and the bolts (adjustment rod 12) are movably connected to the upper groove of the aluminum profile (wave depth measurement mother bar 11). When replacing the container roof, if the width changes significantly, the horizontal position of the raised or flat part on the container roof changes accordingly. The adjusting rod 12 on the wave depth measurement mother rod 11 can be moved to adjust the horizontal position of the laser distance detection sensor 14 on the mounting plate 13 to face the raised or flat part on the container roof, thereby improving the adaptability of the device. When calibrating the laser distance detection sensor 14, the software level calibration can be performed through the controller according to the measured wave depth result of any container roof and the standard wave depth of the container roof, or the screwing height of the adjusting rod 12 and the mounting plate 13 in the adjustment mechanism can be changed to vertically adjust the height of the laser distance detection sensor 14 or move the adjusting rod 12 on the wave depth measurement mother rod 11 to adjust the horizontal position of the laser distance detection sensor 14 on the mounting plate 13 to achieve hardware level calibration. The laser distance detection sensor 14 is also placed under the wave depth measurement mother rod 11 through the mounting plate 13, and is installed from a top view to avoid moisture and dust affecting the detection performance, thereby improving the stability of the device.

[0038] The controller adopts PLC, and the controller is electrically connected to a touch screen 8. The user inputs the standard length, width, wave depth and container top plate size detection instructions of the container top plate through the touch screen 8. After the detection is completed, the touch screen 8 displays the length, width and wave depth detection results of the container top plate. The controller is also electrically connected to a photoelectric switch 10, which is set under the bracket 2 and installed in a top-down manner to avoid moisture and dust affecting the detection performance and improve the stability of the device. The photoelectric switch 10 is used to detect whether the container top plate reaches the preset size detection position to start the size detection process.

[0039] Embodiment 2:

[0040] like Figure 4 As shown, this embodiment provides a working method of the container top plate size detection device described in Embodiment 1, and the process is as follows:

[0041] The user takes any container top plate, uses a tape measure or a laser ruler to measure its length, width and wave depth, and inputs the length, width and wave depth of any container top plate into the controller through the touch screen 8 for storage, and then starts the calibration process: the controller sends the corresponding execution instruction of the calibration to the roller table 1, the photoelectric switch 10, the fixing mechanism, the clamping mechanism, the high-speed linear slide 3, and the laser detection sensor; the roller table 1 transports any container top plate to the bottom of the bracket 2, and when the photoelectric switch 10 detects that any container top plate reaches the preset size detection position, the roller table 1 is moved until the lifting cylinder 7 extends to raise the lifting lever 6 to the output side of the roller table 1 to block any container top plate and stop running, the tightening cylinder 15 extends the top plate at its output end to push any container top plate to the fixed lever 9 on the opposite side until it is tightened, and the pressing cylinder 5 extends the soft pressing piece at its output end to press tightly Any container top plate after fixing; the laser distance detection sensor 14 under the wave depth measurement mother rod 11 measures any container top plate to obtain the measured wave depth of any container top plate, and the controller or adjustment mechanism calibrates the laser distance detection sensor 14 according to the measured wave depth of any container top plate and the wave depth of any container top plate; the high-speed linear slide 3 drives the laser edge detection sensor 4 to move until the edge signal is detected, and the laser edge detection sensor 4 measures the distance between the origin of the high-speed linear slide 3 and the long and wide edges of any container top plate and then returns to its original position, and the laser edge detection sensor 4 sends the distance between the origin of the high-speed linear slide 3 and the long and wide edges of any container top plate to the controller for storage, the pressing cylinder 5 and the tightening cylinder 15 retract, the lifting cylinder 7 retracts the lifting gear rod 6 to release any container top plate, and the roller table 1 re-operates to output any container top plate;

[0042] The user inputs the standard length, standard width and standard wave depth of the container roof through the touch display screen 8, and the controller saves the standard length, standard width and standard wave depth of the container roof, and then starts the detection process: the controller sends the corresponding execution instruction to the roller table 1, the photoelectric switch 10, the fixing mechanism, the clamping mechanism, the high-speed linear slide 3, and the laser detection sensor; the roller table 1 transports the top plate of the container to be tested to the bottom of the bracket 2, and when the photoelectric switch 10 detects that the top plate of the container to be tested reaches the preset size detection position, the roller table 1 is moved until the lifting cylinder 7 extends to raise the lifting gear rod 6 to the output side of the roller table 1 to block the top plate of the container to be tested and stop running, the tightening cylinder 15 extends the top plate at its output end to push the top plate of the container to be tested against the fixed gear rod 9 on the opposite side until it is tightened, and the pressing cylinder 5 extends the soft clamping piece at its output end to clamp the fixed top plate of the container to be tested; the laser distance detection sensor 14 under the wave depth measurement mother rod 11 measures the wave depth of the top plate of the container to be tested, and the laser distance detection sensor 14 sends the wave depth of the top plate of the container to be tested to the controller Save, the controller subtracts the wave depth of the container top plate to be tested from the standard wave depth of the container top plate to obtain the wave depth difference; the high-speed linear slide 3 drives the laser edge detection sensor 4 to move until the edge signal is detected, the laser edge detection sensor 4 measures the distance between the origin of the high-speed linear slide 3 and the long and wide edges of the container top plate to be tested and then returns to its original position, the laser edge detection sensor 4 sends the distance between the origin of the high-speed linear slide 3 and the long and wide edges of the container top plate to be tested to the controller for saving, the controller calculates the length and width of the container top plate to be tested according to the calculation formula of the length and width of the container top plate to be tested, the controller subtracts the length and width of the container top plate to be tested from the standard length and standard width of the container top plate to obtain the length difference and width difference, the controller sends the length, width, wave depth and length difference, width difference and wave depth difference of the container top plate to be tested to the touch display screen 8 for display; the pressing cylinder 5 and the tightening cylinder 15 retract, the lifting cylinder 7 retracts the lifting gear rod 6 to release the container top plate to be tested, and the roller table 1 re-operates to output the container top plate to be tested;

[0043] Among them, the calculation formulas for the length and width of the container top plate to be tested are respectively: the length of the container top plate to be tested = the length of any container top plate + the distance between the origin of the high-speed linear slide 3 and the wide edge of any container top plate - the distance between the origin of the high-speed linear slide 3 and the wide edge of the container top plate to be tested; the width of the container top plate to be tested = the width of any container top plate + the distance between the origin of the high-speed linear slide 3 and the long edge of any container top plate - the distance between the origin of the high-speed linear slide 3 and the long edge of the container top plate to be tested. The principle of measuring the distance between the origin of the high-speed linear slide 3 and the long and wide edges of the top plate of any container to be tested is as follows: the controller starts the servo motor to drive the screw to rotate, and the moving part approaches the long and wide edges of the top plate of any container to be tested. When the origin switch detects that the moving part is away from the origin, it sends a signal to the controller. The controller collects the servo motor pulse signal and converts it into the number of rotations. When the laser edge detection sensor 4 detects the edge signal and sends it to the controller, the controller records the number of rotations at this time. Then, the distance between the origin of the high-speed linear slide 3 and the long and wide edges of the top plate of any container to be tested = the number of rotations × the lead of the screw (fixed value). After that, the servo motor reverses to drive the screw to reverse, and the moving part returns to the origin.

[0044] In summary, the present invention controls the roller table to convey the container roof through a controller, the fixing mechanism to fix the container roof, the laser detection sensor on the bracket to measure the wave depth of the container roof, and the high-speed linear slide to drive the laser detection sensor to move to measure the length and width of the container roof, thereby realizing automatic detection of the size of large-sized container roofs. Laser measurement is combined with the overhead installation method of the laser detection sensor, which is more suitable for the complex and harsh production inspection environment of the container roof than visual inspection technology. It has high inspection accuracy and efficiency, good stability and continuity, and low cost. Any container roof can be used for verification and inspection. It has good universality and is suitable for popularization and use.

[0045] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A container roof size detection device, characterized in that: It includes a controller, a roller table, a bracket, a fixing mechanism, a high-speed linear slide and a laser detection sensor; the controller is electrically connected to the roller table, the fixing mechanism, the high-speed linear slide and the laser detection sensor respectively, the roller table is used to convey the container top plate, the fixing mechanism is arranged on the side of the roller table, and is used to fix the container top plate, the bracket is erected on the roller table, the high-speed linear slide is arranged on the bracket, and the laser detection sensor is installed on the high-speed linear slide and the bracket, and is used to measure the length, width and wave depth of the container top plate; The fixing mechanism includes a lifting lever, a lifting cylinder, a fixed lever and a tightening cylinder; the lifting lever and the lifting cylinder are arranged on the output side of the roller table, the output end of the lifting cylinder is connected to the lifting lever, the lifting lever is higher than the container top plate when it is raised, and lower than the container top plate when it is lowered; the fixed lever and the tightening cylinder are arranged on the side of the roller table and are respectively located on both sides of the container top plate flow direction, and the output end of the tightening cylinder and the fixed lever are both higher than the container top plate; It also includes a pressing mechanism, which is electrically connected to the controller and is arranged on the bracket. The pressing mechanism includes a pressing cylinder for pressing the fixed container top plate. The high-speed linear slide is arranged at the bottom of one side of the bracket away from the lifting lever and the fixed lever; The laser detection sensor includes a laser edge detection sensor, which is mounted on a high-speed linear slide and is used to measure the length and width of the container roof; It also includes a wave depth measurement mother rod, which is arranged on a bracket, and a laser detection sensor including a laser distance detection sensor, which is installed under the wave depth measurement mother rod, and the laser distance detection sensor is directly facing the raised part or the flat part on the top plate of the container, and is used to measure the wave depth of the top plate of the container; It also includes an adjustment mechanism, the adjustment structure includes an adjustment rod and a mounting plate, the adjustment rod is threadedly connected to the mounting plate, the adjustment rod is movably connected to the wave depth measurement mother rod, and the laser distance detection sensor is fixedly mounted on the mounting plate; It also includes a touch display screen, which is electrically connected to the controller and is used to receive instructions for detecting the standard length, width, wave depth and size of the container roof and to display the detection results of the length, width and wave depth of the container roof; It also includes a photoelectric switch, which is arranged under the bracket and electrically connected to the controller, and is used to detect whether the top plate of the container reaches a preset size detection position; The working method of the container top plate size detection device includes: The touch screen receives the length, width and wave depth of any container top plate, and the controller saves the length, width and wave depth of any container top plate; The roller table transports any container top plate to the bottom of the bracket. When the photoelectric switch detects that any container top plate is in place, the lifting cylinder raises the lifting lever to block any container top plate, the roller table stops running, the tightening cylinder extends to push any container top plate against the fixed lever until it is tightened, and the pressing cylinder extends to press and fix any container top plate; the laser distance detection sensor under the wave depth measurement mother rod measures any container top plate to obtain the measured wave depth of any container top plate, and the controller or adjustment mechanism calibrates the laser distance detection sensor according to the measured wave depth of any container top plate and the wave depth of any container top plate; The high-speed linear slide drives the laser edge detection sensor to move until the laser edge detection sensor detects an edge signal. The laser edge detection sensor measures the distance between the origin of the high-speed linear slide and the long and wide edges of any container top plate and then returns to its original position. The laser edge detection sensor sends the distance between the origin of the high-speed linear slide and the long and wide edges of any container top plate to the controller for storage. The pressing cylinder and the tightening cylinder retract, the lifting cylinder retracts the lifting lever to release any container top plate, and the roller table re-operates to output any container top plate. The touch screen receives the standard length, standard width and standard wave depth of the container top plate, and the controller saves the standard length, standard width and standard wave depth of the container top plate; The roller table transports the top plate of the container to be tested to the bottom of the bracket. When the photoelectric switch detects that the top plate of the container to be tested is in place, the lifting cylinder raises the lifting lever to block the top plate of the container to be tested, the roller table stops running, the tightening cylinder extends to push the top plate of the container to be tested against the fixed lever until it is tightened, and the pressing cylinder extends to press and fix the top plate of the container to be tested; The laser distance detection sensor under the wave depth measurement mother rod measures the wave depth of the container top plate to be measured, and the laser distance detection sensor sends the wave depth of the container top plate to be measured to the controller for storage. The controller subtracts the wave depth of the container top plate to be measured from the standard wave depth of the container top plate to obtain the wave depth difference; The high-speed linear slide drives the laser edge detection sensor to move until the laser edge detection sensor detects an edge signal. The laser edge detection sensor measures the distance between the origin of the high-speed linear slide and the long and wide edges of the top plate of the container to be tested and then returns to its original position. The laser edge detection sensor sends the distance between the origin of the high-speed linear slide and the long and wide edges of the top plate of the container to be tested to the controller for storage. The controller calculates the length and width of the top plate of the container to be tested according to the calculation formula of the length and width of the top plate of the container to be tested. The controller subtracts the length and width of the top plate of the container to be tested from the standard length and standard width of the container top plate to obtain the length difference and width difference. The controller sends the length, width, wave depth and length difference, width difference and wave depth difference of the top plate of the container to be tested to the touch display screen for display, the pressing cylinder and the tightening cylinder retract, the lifting cylinder retracts the lifting lever to release the top plate of the container to be tested, and the roller table reruns to output the top plate of the container to be tested; Among them, the calculation formulas for the length and width of the container top plate to be tested are respectively: the length of the container top plate to be tested = the length of any container top plate + the distance between the origin of the high-speed linear slide and the wide edge of any container top plate - the distance between the origin of the high-speed linear slide and the wide edge of the container top plate to be tested; the width of the container top plate to be tested = the width of any container top plate + the distance between the origin of the high-speed linear slide and the long edge of any container top plate - the distance between the origin of the high-speed linear slide and the long edge of the container top plate to be tested.

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