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CN-122015732-A - Marine curved surface forming inspection mechanism and inspection method

CN122015732ACN 122015732 ACN122015732 ACN 122015732ACN-122015732-A

Abstract

The invention discloses a marine curved surface forming inspection mechanism and an inspection method, wherein the inspection mechanism comprises an inspection foot seat, an inspection adjusting pipe, an inspection supporting seat, a linear module, an inspection mechanism and a control box, the inspection mechanism moves back and forth along a guide rail, a servo motor drives a connecting plate to drive the inspection mechanism to move, position information of the inspection mechanism is acquired through an encoder of the servo motor, a rack of the inspection mechanism is vertical to the guide rail of the linear module, the rack is parallel to the adjusting plate, the rack moves up and down freely in a support to drive the encoder to rotate, friction between the inspection mechanism and a curved plate is rolling friction, the rack moves up and down freely, rib bit line detection requirements of curved plates with different sizes can be self-adapted in the moving process, special detection tools do not need to be customized for different curved plates, the repeated utilization rate of the tools is improved, the data acquisition is realized through the mode that the rack drives the encoder, the inspection precision is high, and precise data support is provided for the forming quality of the curved plate.

Inventors

  • Wu Jiangxiang
  • YU JINWEI
  • PAN HUIJUN
  • WANG XU
  • LIU YING
  • YU LIUHUA
  • ZHANG JIANGHONG

Assignees

  • 上海中船临港船舶装备有限公司
  • 上海船舶工艺研究所(中国船舶集团有限公司第十一研究所)

Dates

Publication Date
20260512
Application Date
20251225

Claims (7)

  1. 1. The utility model provides a marine curved surface shaping inspection mechanism, its characterized in that includes inspection footstock (1), inspection control tube (2), inspection supporting seat (3), sharp module (4), inspection mechanism (5) and control box, the bottom of inspection control tube (2) is fixed to inspection footstock (1), inspection supporting seat (3) cup joint on inspection control tube (2), sharp module (4) include guide rail (401), transmission lead screw, backup pad (402) and servo motor (403), servo motor (403) drive transmission lead screw, transmission lead screw links to each other with backup pad (402), servo motor (403) are through transmission lead screw drive backup pad (402) along guide rail (401) removal, The inspection mechanism is fixed on the supporting plate (402), the inspection mechanism (5) comprises a bracket (501), a rack (502), a gear (503), a connecting pin (508), an adjusting plate (509), a connecting plate (511), a bearing (512) and an encoder (513), wherein the adjusting plate (509) is fixed on the rear side of the connecting plate (511), the adjusting plate (509) is fixedly connected with the supporting plate (402), the connecting pin (508) is positioned on the front side of the connecting plate (511), the encoder (513) is arranged on the front side of the connecting pin (508), the connecting pin (508) is rotationally connected with the connecting plate (511), the bracket (501) is fixed on the rear side of the connecting pin (508), the rack (502) vertically passes through the bracket (501), the gear (503) and the bearing (512) which are matched with the rack (502) are arranged in the bracket (501), the encoder (513) is in transmission connection with the bearing (512), the inspection gear (502) can be driven to move up and down, the bearing (512) can be driven to move, the encoder (502) can be driven to move, the bearing (509) can be driven to rotate, and then the rack (502) can be kept in parallel with the adjusting plate (502), The control box comprises a PLC controller and an industrial personal computer, wherein the PLC controller is in communication connection with the industrial personal computer, the PLC controller controls the servo motor, and the industrial personal computer collects encoder data and processes the data.
  2. 2. The marine curved surface forming inspection mechanism according to claim 1, wherein the servo motor (403) is located at the upper end of one side of the guide rail (401), and an output shaft of the servo motor (403) is connected with the transmission screw rod through a coupling.
  3. 3. The marine surface forming inspection mechanism according to claim 1, wherein the servo motor (403) is provided with an absolute value encoder by which the position of the support plate (402) is acquired.
  4. 4. The marine curved surface forming inspection mechanism according to claim 1, wherein proximity switches are arranged on both sides of the linear module (4).
  5. 5. The marine curved surface forming inspection mechanism according to claim 1, wherein a rack sleeve (505) is provided at a bottom end of the rack, and a rack sleeve bearing (514) is provided at a bottom end of the rack sleeve (505).
  6. 6. The marine curved surface forming inspection mechanism according to claim 5, wherein the side surface of the rack sleeve (505) is provided with an inspection pin (507) along the radial direction, and the inspection pin (507) is tightly abutted against the side surface of the rack sleeve bearing (514) in a matched manner.
  7. 7. Marine curved surface forming inspection method based on marine curved surface forming inspection mechanism according to any one of claims 1-6, characterized by comprising the steps of: step 1), two inspection supporting seats (3) are respectively arranged on two inspection adjusting pipes (2), and then the two inspection adjusting pipes (2) are respectively arranged on two inspection foot seats (1); step 2), arranging two sets of inspection mechanisms which are installed on two sides of a rib bit line or a central line to be inspected respectively; step 3) mounting the linear module (4) on the inspection support seat (3); Step 4) mounting the inspection mechanism on a support plate (402); Step 5) driving a servo motor (403) to adjust the initial position of the checking mechanism, and performing zero clearing operation on the encoder (513); Step 6), setting sampling frequency, driving a servo motor (403), pushing a checking mechanism from a checking start point to a checking end point, and recording encoder (513) values corresponding to sampling positions by an industrial control integrated machine; and 7) the industrial control integrated machine processes the acquired data and compares the acquired data with a theoretical curve to calculate an error value.

Description

Marine curved surface forming inspection mechanism and inspection method Technical Field The invention relates to the technical field of ship body construction detection, in particular to a marine curved surface forming inspection mechanism and an inspection method. Background The outer surface of the ship body is formed by a large number of complex and inextensible curved plates, and the shaping processing and inspection of the curved surfaces of the ship body outer plates are core links of ship body construction; at present, the inspection of the bent plate after the molding by the ship enterprise is still mainly performed by the traditional manual sample alignment method, namely, a wooden sample strip or sample box is customized according to the rib line and the central line of the bent plate, and then the sample strip/sample box is manually held or placed by means of a lifting appliance for comparison. The traditional method has a plurality of defects: firstly, the reusability of sample bars/sample boxes is poor, a large number of special sample bars/sample boxes are required to be customized due to different shapes of outer plates at different positions of a ship body, and wood materials are easy to damage and deform; Secondly, the inspection precision is low, the error between the processed plate and the spline/sample box is completely judged by naked eyes, and the processing precision of the plate is difficult to ensure; thirdly, the labor intensity is high, the efficiency is low, spline/sample box comparison is needed to be repeatedly placed, and the large sample box is needed to be coordinated by a plurality of people or operated by means of a lifting appliance. In addition to the traditional method, the prior art has a plurality of curved plate inspection schemes, but all have the defects: the inspection scheme based on monocular or binocular vision has the advantages that the scanning range of cameras is limited, the number of cameras is increased, fixed brackets are required to be erected, the cost is high, and the inspection range is limited; The laser scanning technology has strict requirements on the surface flatness and the testing environment of the curved plate, is difficult to adapt to complex sites of shipyards, has expensive equipment, needs to manually operate the reflecting target ball, and has high labor intensity and low efficiency when measuring the large-scale curved plate; The strut lattice scheme needs to install a large number of struts with motors, the occupied area is large, the cost is high, and the deviation of the plate placement angle easily causes larger measurement data errors. Therefore, a mechanism capable of replacing the traditional sample alignment detection is needed, the reusability of a tool is improved, the detection precision is guaranteed, the labor intensity is reduced, and the device has the characteristics of simplicity in installation and use and low requirements on environment and space. Disclosure of Invention The invention provides a marine curved surface forming inspection mechanism and an inspection method, which are used for solving the problems of poor reusability, insufficient precision, high labor intensity and low suitability of the conventional curved plate inspection technology. In order to achieve the above object, the technical scheme of the present invention is as follows: the utility model provides a marine curved surface shaping inspection mechanism, its characterized in that includes inspection footstock, inspection control pipe, inspection supporting seat, sharp module, inspection mechanism and control box, the bottom of inspection control pipe is fixed to inspection footstock, inspection supporting seat cup joints on inspection control pipe, sharp module includes guide rail, transmission lead screw, backup pad and servo motor, servo motor drive transmission lead screw, transmission lead screw links to each other with the backup pad, servo motor passes through transmission lead screw drive backup pad and removes along the guide rail, The inspection mechanism is fixed on the supporting plate and comprises a bracket, a rack, a gear, a connecting pin, an adjusting plate, a connecting plate, a bearing and an encoder, wherein the adjusting plate is fixed on the rear side of the connecting plate, the adjusting plate is fixedly connected with the supporting plate, the connecting pin is positioned on the front side of the connecting plate, the encoder is arranged on the front side of the connecting pin, the connecting pin is rotationally connected with the connecting plate, the bracket is fixed on the rear side of the connecting pin, the rack vertically passes through the bracket, the bracket is internally provided with the gear and the bearing which are matched with the rack, the encoder is in transmission connection with the bearing, the up-and-down movement of the inspection rack can drive the inspection gear to move so as to drive the beari