CN-122015718-A - Ramp flatness measuring device and measuring method

CN122015718ACN 122015718 ACN122015718 ACN 122015718ACN-122015718-A

Abstract

The application discloses a ramp flatness measuring device which comprises a benchmark positioning assembly, a walking test trolley and a floating test module, wherein the benchmark positioning assembly comprises two groups of magnetic attraction benchmark seats which are respectively used for being detachably adsorbed and fixed on a ramp to be measured, and measurement benchmark lines of the two groups of magnetic attraction benchmark seats are respectively connected with two ends of the benchmark seats, the walking test trolley comprises a frame, a walking mechanism is arranged at the bottom of the frame, a tracking induction unit, a walking control unit and a floating test module are arranged on the frame, the walking control unit is electrically connected with the walking mechanism and used for controlling the walking mechanism to drive the frame to move along the measurement benchmark lines according to relative positions, the floating test module comprises a linear telescopic support column, a measurement roller and a distance detection unit, the linear telescopic support column is arranged on the frame in a telescopic manner along the vertical direction, the measurement roller is rotatably arranged at the bottom end of the linear telescopic support column, and the distance detection unit is fixed at the top end of the linear telescopic support column and used for detecting the vertical distance between the measurement benchmark lines and the distance detection unit in real time.

Inventors

TIAN SHENGLI
WANG YUNHONG
FENG YONGJIAN
HUANG YUJIAN
CHEN YU
YANG GUIHONG
LIN MINGSHENG
LI XIANDE
LI SIQUAN
WANG ZEYU

Assignees

广船国际有限公司

Dates

Publication Date: 20260512
Application Date: 20260327

Claims (10)

1. A ramp flatness measurement device, comprising: The datum positioning assembly (1) comprises two groups of magnetic datum seats (11) which are respectively used for being detachably adsorbed and fixed on a ramp to be measured, and measuring datum lines (12) with two groups of magnetic datum seats (11) connected at two ends respectively, wherein the measuring datum lines (12) are straightened to form a flatness measuring datum; The walking test trolley (2) comprises a trolley frame (21), wherein a walking mechanism (22) is arranged at the bottom of the trolley frame (21), a tracking induction unit (23), a walking control unit and a floating test module (24) are arranged on the trolley frame (21), the tracking induction unit (23) is electrically connected with the walking control unit and used for non-contact detection of the relative position of a measurement datum line (12) and the trolley frame (21), the walking control unit is electrically connected with the walking mechanism (22) and used for controlling the walking mechanism (22) to drive the trolley frame (21) to walk along the measurement datum line (12) according to the relative position, the floating test module (24) comprises a linear telescopic supporting column (241), a measurement roller (242) and a distance detection unit (243), the linear telescopic supporting column (241) is arranged on the trolley frame (21) in a telescopic manner along the vertical direction, the measurement roller (242) is rotatably arranged at the bottom end of the linear telescopic supporting column (241), and the distance detection unit (243) is fixed at the top end of the linear telescopic supporting column (241) and the detection end of the distance detection unit (243) is vertical to the detection datum line (12) and used for detecting the vertical distance between the measurement datum line (12) and the measurement datum line (243) in real time.
2. The ramp flatness measurement device according to claim 1, characterized in that the floating test module (24) further comprises a pretension for providing a downward pretension to the linear telescopic support column (241) such that the measurement roller (242) always abuts the surface of the ramp to be measured.
3. The ramp flatness measurement device according to claim 1, characterized in that each group of the magnetic attraction reference seats (11) comprises a powerful magnetic attraction base, a vertical fine adjustment upright post and a constant tension locking mechanism, wherein the powerful magnetic attraction base is provided with a locking switch and is used for being adsorbed and fixed on the surface of the ramp to be measured, the vertical fine adjustment upright post is vertically fixed on the top surface of the powerful magnetic attraction base and is provided with a digital display height fine adjustment mechanism, and the constant tension locking mechanism is arranged at the top end of the vertical fine adjustment upright post and is used for fixing the end part of the measurement reference line (12) and adjusting the tension of the measurement reference line (12).
4. The ramp flatness measurement device according to claim 1, characterized in that the tracking sensing unit (23) comprises a left tracking laser displacement sensor (232) and a right tracking laser displacement sensor (233), the left tracking laser displacement sensor (232) and the right tracking laser displacement sensor (233) are horizontally symmetrically arranged on the frame (21), and the detection ends of the left tracking laser displacement sensor and the right tracking laser displacement sensor are opposite to the arrangement path of the measurement datum line (12) for detecting the horizontal distances from the measurement datum line (12) to the two tracking laser displacement sensors in real time.
5. The ramp flatness measurement device according to claim 1, characterized in that the running mechanism (22) comprises four anti-slip driving wheels symmetrically arranged at the bottom of the frame (21), the four anti-slip driving wheels are respectively arranged at the left side and the right side of the arrangement path of the measurement datum line (12), each anti-slip driving wheel is connected with an independent driving motor in a matched manner, each driving motor is electrically connected with the running control unit, and the running control unit realizes steering deviation correction of the frame (21) by independently adjusting the rotation speed of each driving motor.
6. The ramp flatness measurement device according to claim 1, characterized in that the frame (21) is provided with a reference line avoiding groove for the measurement reference line (12) to pass through in a contactless manner, and the travel control unit controls the travel mechanism (22) to drive the frame (21) to travel in a process that the frame (21) and the measurement reference line (12) are in full-course contactless.
7. The ramp flatness measurement device according to claim 1, characterized in that the frame (21) is further provided with a power module, a data storage module and a wireless data transmission module, wherein the power module is used for integrally supplying power to the device, the data storage module is electrically connected with the distance detection unit (243) and used for storing measurement data, and the wireless data transmission module is electrically connected with the distance detection unit (243) and the walking control unit respectively and used for carrying out data interaction with terminal equipment.
8. The ramp flatness measurement apparatus according to claim 7, wherein the wireless data transmission module is connected with a terminal device in a matching manner, and the terminal device is provided with a sag compensation algorithm module, a flatness calculation module and an out-of-tolerance early warning module, which are configured to automatically process measurement data collected by the distance detection unit (243), and determine whether the flatness is acceptable and visually output the measurement data.
9. The ramp flatness measurement device according to claim 1, characterized in that the measurement datum line (12) is a plastic coated kevlar stay wire with low elongation, each group of the magnetic attraction datum seats (11) is provided with a limiting anti-collision module, and the limiting anti-collision module is in signal connection with the walking control unit and is used for limiting the walking travel of the walking test trolley (2).
10. A ramp flatness measurement method, implemented based on a ramp flatness measurement device according to any one of claims 1 to 9, comprising the steps of: S1, preparing before measurement, namely finishing zero calibration of the ramp flatness measuring device and cleaning foreign matters on the surface of a ramp to be measured; s2, constructing measurement references, namely respectively adsorbing and fixing two groups of magnetic reference seats on the ramp to be measured, straightening the measurement reference lines, and calibrating the measurement reference lines to equal heights at two ends to form flatness measurement references; S3, measuring and positioning, namely placing the walking test trolley at the starting end of the ramp to be measured, and finishing initial centering of the frame and the measurement datum line through the tracking induction unit so that the measurement roller of the floating test module is attached to the surface of the ramp to be measured; s4, continuous automatic measurement, namely starting a measurement program, controlling the running control unit to drive the frame to run along the measurement datum line at a constant speed by the running control unit according to the detection signal of the tracking sensing unit, and simultaneously, continuously detecting the vertical distance between the measurement datum line and the distance detection unit in real time by the distance detection unit, synchronously binding running position data, and completing full-line continuous measurement of a single measuring line; S5, data processing and result judgment, namely processing the collected measurement data, calculating the flatness deviation of the ramp to be tested, and comparing a preset qualification threshold value to finish flatness qualification judgment.

Description

Ramp flatness measuring device and measuring method Technical Field The application relates to the technical field of ship construction, in particular to a ramp flatness measuring device and a measuring method. Background The ship roll-on ramp is a core functional structure of a roll-on ship, the flatness of the ship roll-on ramp directly influences the traffic safety and structural stress performance of vehicles, and the industry has strict control requirements on the flatness accuracy of the ship roll-on ramp. At present, a welding marker post wire drawing method is generally adopted for detecting the flatness of the ramp in the industry, namely, metal marker posts are welded and fixed at two ends of the ramp to be detected, flexible wire bodies straightened among the marker posts are used as measurement references, flatness judgment is completed by manually measuring the distance from a sampling point position on the ramp to the reference lines, the marker posts are required to be cut and removed by fire after measurement, and parent metal repair is carried out on the welding point positions. The method has three main core defects that firstly, fire operation is required in the whole process, the method is limited by fire approval of a ship site, fire safety hazards exist, irreversible damage is caused to a ramp parent metal, construction cost and period are increased in a subsequent repair process, secondly, only manual sampling measurement is carried out, a large number of detection dead zones exist, errors are generated in manual reading and datum line touching and shaking, the measurement precision and reliability are poor, thirdly, the process is complex, the time spent on tool installation, calibration and dismantling is long, the multi-region measurement efficiency is extremely low, and the working condition suitability is poor. In summary, the existing slope flatness measurement technology cannot simultaneously meet the core requirements of no-base metal damage, no-fire operation and high-precision continuous measurement, and corresponding solutions are needed. Disclosure of Invention An object of an embodiment of the present invention is to provide a ramp flatness measurement apparatus and a measurement method, which can solve the above-mentioned problems in the related art. In order to achieve the above purpose, the application adopts the following technical scheme: In one aspect, a ramp flatness measurement apparatus is provided, comprising: the reference positioning assembly comprises two groups of magnetic reference seats which are respectively used for being detachably adsorbed and fixed on a ramp to be measured, and two ends of the reference seats are respectively connected with two groups of measurement reference lines of the magnetic reference seats, and the measurement reference lines are straightened to form flatness measurement references; The walking test trolley comprises a trolley frame, wherein a walking mechanism is arranged at the bottom of the trolley frame, a tracking induction unit, a walking control unit and a floating test module are arranged on the trolley frame, the tracking induction unit is electrically connected with the walking control unit and used for non-contact detection of the relative position of the measurement datum line and the trolley frame, the walking control unit is electrically connected with the walking mechanism and used for controlling the walking mechanism to drive the trolley frame to walk along the measurement datum line according to the relative position, the floating test module comprises a linear telescopic support column, a measurement roller and a distance detection unit, the linear telescopic support column is arranged on the trolley frame in a telescopic manner along the vertical direction, the measurement roller is rotatably arranged at the bottom end of the linear telescopic support column, and the distance detection unit is fixed at the top end of the linear telescopic support column. Optionally, the floating test module further includes a pre-tightening member, where the pre-tightening member is configured to provide a downward pre-tightening force for the linear telescopic support column, so that the measurement roller always fits the surface of the ramp to be tested. The magnetic attraction standard seats comprise a strong magnetic attraction base, vertical fine adjustment stand columns and constant tension locking mechanisms, wherein the strong magnetic attraction base is provided with a locking switch and is used for being adsorbed and fixed on the surface of a ramp to be measured, the vertical fine adjustment stand columns are vertically fixed on the top surface of the strong magnetic attraction base, the vertical fine adjustment stand columns are provided with digital display height fine adjustment mechanisms, and the constant tension locking mechanisms are arranged on the top ends of the vertical fine adjustment stand columns and