Container ship cargo hold box testing method based on total station data detection
By using equipment such as total stations and mobile trolleys in the container cargo hold, the precise detection of guide rail data is achieved, and the problem of guide rail data detection in the cargo hold is solved, construction efficiency and accuracy are improved, and costs are reduced.
Patent Information
- Application Number
- CN202411873840.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-04-29
AI Technical Summary
After the cargo hold of the container ship is formed and welded, the vertical guide rail data in the cargo hold cannot be effectively detected, resulting in low efficiency of physical test boxes and high construction costs.
The data detection method based on the total station is adopted. By setting up pads and guide rails, the laser total station is used to measure three-dimensional coordinate data, and combined with mobile trolleys and full-size targets, the rapid and accurate detection of the guide rail data in the cargo hold is achieved.
It realizes accurate detection of guide rail data in the cargo hold without the need to set up a full cabin scaffold, significantly improving construction efficiency and accuracy, and reducing construction costs.
Smart Images
Figure CN119901263A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of marine ship design and construction, and in particular relates to a cargo hold testing method of a container ship based on total station data detection. Background Art
[0002] During the loading stage in the container ship construction dock, accessories need to be installed in the cargo hold after the cargo hold is formed and welded. After the installation is completed, the cargo hold needs to be physically tested to determine whether more than 20 containers in the cargo hold can be successfully loaded, and whether the matching data of the guide rails in the containers and the accessories meet the design requirements. Before the accessories are installed, it is necessary to test the data matching between them and the guide rails to ensure that the container is smoothly seated in the center of the stacking cone after it falls and does not contact the angle steel surface of the guide rails, ensuring that the data is within the tolerance range. In previous construction, construction workers could only use plumb bobs to test the matching data of the position of the lowest guide rail connecting plate and the accessories, and the rest of the upper part could not be tested. The rest of the parts can only be tested by setting up scaffolding in the cargo hold. During the current construction process, the cabin is no longer fully jacked in accordance with the requirements of safe production and paint protection. The erection of the scaffolding has an adverse effect on the detection of data, and there are great difficulties in the detection method. The use of the lightless target mode for detection seriously affects the accuracy of the data. It can only be judged by the subsequent physical test box self-inspection whether the remaining rail data meets the design standards, which greatly increases the construction cost and efficiency; In order to complete the precision data detection of all rail data in the cargo hold without the erection of scaffolding, it is necessary to use the existing resources and technical systems to make corresponding optimizations, so that a large functional improvement can be achieved. Therefore, a climbing auxiliary detection device based on total station detection is designed. By using the total station and the device to measure the precision data of the rail data in the cabin, the construction efficiency and accuracy can be greatly improved, and the measurement and construction can be facilitated to achieve one-time feedback of the precision data (X, Y). The design of the detection method and device solves the problem that the vertical rail data of the container ship cannot be detected after the whole cabin is formed; at the same time, it solves the problem of low efficiency and increased construction cost of the physical test box in the cargo hold. When using the detection method and device of the invention, the total station must first be set up at an arbitrary position, and the device must be placed on a guide rail. The up and down movement of the device and the rotation angle of the light target are controlled by remote control to turn it to the front angle of the instrument for precision measurement construction. Detection during the process can be implemented at different positions. Summary of the invention
[0003] In order to solve the above problems, the present invention provides a cargo hold test method for container ships based on total station data detection, aiming to achieve the purpose of completing the detection of the vertical guide rail data in the cargo hold and the accuracy data detection matching the accessories without setting up a full-hold scaffolding in the cargo hold. The technical solution adopted is: A cargo hold testing method for a container ship based on total station data detection, wherein a row of pads are arranged on both sides of a bottom plate in a cargo hold of a hull, each row of pads is arranged with a plurality of pads at equal intervals, a cone angle front and rear position line is horizontally marked on the pads, and two cone angle left and right position lines are vertically marked, the cone angle front and rear position line intersects with the cone angle left and right position line to form position line intersection points A and B, a plurality of guide rails are fixed on a transverse bulkhead of the cargo hold, the guide rails are vertically fixed, there are intervals between the plurality of guide rails, and a pad corresponds to the bottom of each guide rail.
[0004] S1: With the centerline of the hull as the center, the transverse bulkhead of the hull is divided into two parts, the bottom of the guide rail in the left half corresponds to the intersection point B of the right side position line of the pad, and the bottom of the guide rail in the right half corresponds to the intersection point A of the left side position line of the pad. The purpose of the correspondence is to determine the matching degree of the intersection point of the guide rail and the position line on the pad at the same container position.
[0005] S2: Use a laser total station to measure the intersection of the position lines on the two pads at the end, and select the outermost intersection of the position lines on the end pad for station construction.
[0006] S3: Measure the intersection points of the position lines on the remaining pads, select the intersection points of the position lines corresponding to the guide rails for measurement, and record the three-dimensional coordinate data of each pad position line measurement point.
[0007] S4: Place the mobile trolley with the full-size target on the guide rail, use the remote control to turn the full-size target on the device to the front angle of the instrument for precision measurement.
[0008] S5: Use the remote control to move the mobile trolley up and down, and move the mobile trolley to the middle and top sections of the guide rail respectively, and measure the middle and top sections of the guide rail. During measurement, use the remote control to turn the full-size target on the device to the front angle of the instrument, perform precision measurement, and record the data.
[0009] S6: Repeat steps S4 and S5 to measure all guide rails and record the data.
[0010] S7: After the measurement, the data of the guide rail is matched with the measured data to check whether the design tolerance requirements are met.
[0011] The above-mentioned cargo hold testing method for container ships based on total station data detection, further, the mobile trolley has a square trolley base, a magnet is arranged on the back of the trolley base, running wheels are fixed on both sides of the magnet, a full-size target is fixed on the front, the full-size target is fixed on the base through a rotation control mechanism, the full-size target is connected to the shaft of the rotation control mechanism, and the full-size target is rotated 360° through the rotation control mechanism.
[0012] A guide plate is fixed on one side of the base. The guide plate is a U-shaped plate. One wing of the U-shaped plate is connected to the edge of the base. The U-shaped opening of the guide plate faces backwards. Rollers are fixed on the inner surfaces of the two wings of the guide plate.
[0013] The cross section of the guide rail is T-shaped. The guide rail consists of a web and a beam. A beam is fixed at the center of the web, and the guide plate is clamped on the beam. The rollers inside the guide plate fit with both sides of the beam, and the running wheels on the base fit with the web.
[0014] The above-mentioned cargo hold testing method for a container ship based on total station data detection further comprises a limiter fixed to one side edge of the base adjacent to the guide plate.
[0015] The above-mentioned cargo hold testing method of a container ship based on total station data detection further comprises a power control mechanism fixed on the base, and the power control mechanism is connected to an external remote control signal.
[0016] The above-mentioned cargo hold testing method of a container ship based on total station data detection, further, the limiter of the movable trolley is upward and placed on the guide rail.
[0017] The above-mentioned cargo hold testing method of a container ship based on total station data detection, further, the base and the guide plate are an integrated structure.
[0018] The above-mentioned cargo hold testing method for container ships based on total station data detection further has the center point of the full-size target being 121 mm away from the bottom running wheels of the device.
[0019] The detection method of the present invention utilizes the data feedback advantage of the laser total station, and can quickly obtain the three-dimensional data of the measured position when detecting data, and accurately judge the data deviation value of the measured position. The auxiliary device used in the invention method is designed using the principle of the ivy trolley, and two rectangular magnets are arranged at the lower end of the trolley, and the magnetism of the magnet is used to form a magnetic space between the device and the guide rail surface, so as to ensure that the trolley can be adsorbed on the guide rail surface. A guide fixture is provided in the device measurement to ensure the stability of its climbing direction. A reflective target that can rotate 360° is provided in the middle of the structure, and a rotating gear is provided at the lower end, so that the position of the reflective target is extremely stable, thereby ensuring the accuracy of the measurement data. The guide fixture of the auxiliary device of the invention is provided with a bidirectional roller to avoid the occurrence of data detection accuracy errors caused by inconsistent climbing routes of the device. Two motors are arranged inside the structure to control the climbing and descending of the trolley and the rotation of the full-size target. A remote controller is provided to remotely control various moving actions of the device to ensure that the device can be moved according to different height measurement points when in use. A fixed data distance is used, and its data is used for simple data conversion. The data detection of cargo hold rails can be carried out without climbing the bulkhead or setting up scaffolding, and the data matching measurement can be carried out with the accessories. This method and auxiliary device are easy to use, easy to disassemble, easy to carry, widely applicable, and can be reused. It is more intuitive and reliable with the measurement construction, and the use effect is good. It can well achieve the improvement of accuracy in the construction process, eliminate the process of self-inspection of cargo hold test box, and save a lot of construction costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 Schematic diagram of the mobile trolley structure; Figure 2 This is a schematic diagram of the structure on the back of the mobile trolley; Figure 3 Schematic diagram of the structure in which the pad is set on the bottom plate of the cargo hold; Figure 4 Schematic diagram of the connection between the mobile trolley and the guide rail; Figure 5 Schematic diagram of measuring the guide rail using a laser total station; Among them, 1-roller, 2-limiter, 3-base, 4-travel wheel, 5-full-size target, 6-rotation control mechanism, 7-power control mechanism, 8-guide plate, 9-magnet, 12-pad, 14-guide rail. DETAILED DESCRIPTION
[0021] The present invention will be further described in conjunction with the accompanying drawings.
[0022] A container ship cargo hold test method based on total station data detection, such as Figure 3 , 5As shown, a row of pads are arranged on each side of the bottom plate of the cargo hold of the ship, and each row of pads is composed of multiple pads arranged at equal intervals. A cone angle front and rear position line is horizontally marked on the pads, and two cone angle left and right position lines are vertically marked. The cone angle front and rear position line intersects with the cone angle left and right position line to form position line intersection points A and B. Multiple guide rails are fixed on the transverse bulkhead of the cargo hold. The guide rails are fixed vertically, and there are intervals between the multiple guide rails. There is a pad corresponding to the bottom of each guide rail.
[0023] The specific steps are: S1: With the centerline of the hull as the center, the transverse bulkhead of the hull is divided into two parts, the bottom of the guide rail in the left half corresponds to the intersection point B of the right side position line of the pad, and the bottom of the guide rail in the right half corresponds to the intersection point A of the left side position line of the pad. The purpose of the correspondence is to determine the matching degree of the intersection point of the guide rail and the position line on the pad at the same container position.
[0024] S2: Use a laser total station to measure the intersection of the position lines on the two pads at the end, and select the outermost intersection of the position lines of the end pads (points A and B) for station construction.
[0025] S3: Measure the intersection points of the position lines on the remaining pads, select the intersection points of the position lines corresponding to the guide rails (points C, D, E, and F) for measurement, and check whether the three-dimensional data of each point is out of tolerance. If it exceeds 2mm, it needs to be corrected in time. After correction, it is necessary to re-establish the station for measurement and record the three-dimensional coordinate data (X / Y / Z) of the measurement point.
[0026] S4: Place the mobile trolley with the full-size target on the guide rail, use the remote control to turn the full-size target on the device to the front angle of the instrument, and perform three-dimensional precision measurement of the full-size target. After the measurement, record the measurement data.
[0027] S5: Use the remote control to move the mobile trolley up and down, and move the mobile trolley to the middle and top sections of the guide rail respectively, and measure the middle and top sections of the guide rail. During measurement, use the remote control to turn the full-size target on the device to the front angle of the instrument, perform three-dimensional precision measurement, and record three-dimensional (X / Y) data.
[0028] S6: Repeat steps S4 and S5 to measure all guide rails and record the data.
[0029] S7: After measurement, match the data of the guide rail with the intersection data of the measured pad position line. The design data standard for the inside and outside spacing between points A / B / C / D / E / F and the measured guide rail is 100mm, and the design data standard for the front and rear spacing is 121mm. The tolerance requirement is not allowed to exceed 5mm. Check whether the matching data meets the design tolerance requirements.
[0030] S8: For those that do not meet the design tolerance requirements, first check whether the lateral spacing of the guide rails meets the design tolerance standards, and then check whether the intersection of the position lines and the front and rear data of the guide rails meet the design tolerance requirements. If not, correct the guide rails; if the lateral spacing of the guide rails meets the design tolerance requirements, and the matching data with the intersection of the pad position line exceeds 3mm, correct the intersection of the pad position line until it meets the data matching requirements.
[0031] like Figure 1 , 2 As shown, the mobile trolley has a square trolley base, a magnet is arranged on the back of the trolley base, running wheels are fixed on both sides of the magnet, a full-size target is fixed on the front, the full-size target is fixed on the base through a rotation control mechanism, the full-size target is connected to the axis of the rotation control mechanism, the full-size target rotates 360° through the rotation control mechanism, a power control mechanism is fixed on the base, and the power control mechanism is connected to the external remote control signal. The center point of the full-size target is 121mm away from the bottom running wheel of the device, and the distance from the side roller is 100mm, which is consistent with the theoretical value of the distance between the cargo hold pad cone angle piece and the guide rail surface.
[0032] A guide plate is fixed on one side of the base. The guide plate is a U-shaped plate. One wing of the U-shaped plate is connected to the edge of the base. The U-shaped opening of the guide plate faces backwards. Rollers are fixed on the inner surfaces of the two wings of the guide plate.
[0033] like Figure 4 As shown, the cross section of the guide rail is T-shaped. The guide rail is composed of a web and a beam. A beam is fixed at the center of the web, and the guide plate is clamped on the beam. The rollers inside the guide plate fit on both sides of the beam, and the running wheels on the base fit on the web. The base and the guide plate are an integrated structure, and a limiter is fixed on one edge of the base adjacent to the guide plate. When in use, the limiter of the mobile trolley faces upward and is placed on the guide rail.
Claims
1. A method for testing a container ship's cargo hold based on total station data detection, characterized in that: A row of pads is arranged on each side of the bottom plate of the cargo hold, and each row of pads is arranged with multiple pads at equal intervals. A cone angle front and rear position line is horizontally drawn on the pads, and two cone angle left and right position lines are vertically drawn. The cone angle front and rear position line intersects with the cone angle left and right position line to form position line intersection points A and B. Multiple guide rails are fixed on the transverse bulkhead of the cargo hold. The guide rails are fixed vertically, and there are intervals between the multiple guide rails. There is a pad corresponding to the bottom of each guide rail; S1: With the hull centerline as the center, the hull transverse bulkhead is divided into two parts, the bottom end of the guide rail in the left half corresponds to the intersection point B of the right side position line of the pad, and the bottom end of the guide rail in the right half corresponds to the intersection point A of the left side position line of the pad; S2: Use a laser total station to measure the intersection of the position lines on the two pads at the end, and select the outermost intersection of the position lines on the end pad for station building; S3: Perform station measurement on the intersection points of the position lines on the remaining pads, select the intersection points of the position lines corresponding to the guide rails for station measurement, and record the three-dimensional coordinate data of the measurement points; S4: Place the mobile trolley with the full-size target on the guide rail, use the remote control to turn the full-size target on the device to the front angle of the instrument, and perform accuracy measurement; S5: Use the remote control to move the mobile trolley up and down, and move the mobile trolley to the middle and top sections of the guide rail respectively, and measure the middle and top sections of the guide rail. During the measurement, use the remote control to turn the full-size target on the device to the front angle of the instrument, perform precision measurement, and record the data; S6: Repeat steps S4 and S5 to measure all guide rails and record the data; S7: After the measurement, the guide rail data measured by the laser total station is matched with the intersection data of the pad position line measured to check whether the data match between the two meets the design tolerance requirements.
2. A method for testing a container hold based on total station data detection according to claim 1, characterized in that: The mobile trolley has a square trolley base, a magnet is arranged on the back of the trolley base, running wheels are fixed on both sides of the magnet, and a full-size target is fixed on the front. The full-size target is fixed on the base through a rotation control mechanism, and the full-size target is connected to the axis of the rotation control mechanism. The full-size target rotates 360° through the rotation control mechanism. A guide plate is fixed on one side of the base, the guide plate is a U-shaped plate, one of the wing plates of the U-shaped plate is connected to the edge of the base, the U-shaped opening of the guide plate faces backward, and rollers are fixed on the inner surfaces of the two wing plates of the guide plate; The cross section of the guide rail is T-shaped. The guide rail consists of a web and a beam. A beam is fixed at the center of the web, and the guide plate is clamped on the beam. The rollers inside the guide plate fit with both sides of the beam, and the running wheels on the base fit with the web.
3. A method for testing a container hold based on total station data detection according to claim 2, characterized in that: A limiter is fixed on one side edge of the base adjacent to the guide plate.
4. A method for testing a container hold based on total station data detection according to claim 2, characterized in that: A power control mechanism is fixed on the base, and the power control mechanism is connected with an external remote control signal.
5. The method for testing a container hold based on total station data detection according to claim 3 is characterized in that: The limiter of the mobile trolley is facing upwards and placed on the guide rail.
6. A method for testing a container hold based on total station data detection according to claim 2, characterized in that: The base and the guide plate are an integrated structure.
7. A method for testing a container hold based on total station data detection according to claim 2, characterized in that: The center point of the full-size target is 121 mm from the bottom running wheel of the device.