Hull structure strength testing device

Abstract

The invention relates to the technical field of hull testing, in particular to a hull structure strength testing device which comprises a movable base plate, a vertical base is connected to the movable base plate, an ultrasonic detector used for detecting a hull side plate structure is arranged on the vertical base, and a testing piece connected with the vertical base is arranged above the ultrasonic detector; the test piece comprises a driving cylinder, the telescopic end of the driving cylinder is connected with a connecting plate, the end, away from the driving cylinder, of the connecting plate is connected with a hollow sleeve, a positive striking rod is slidably arranged in the sleeve, an elastic spring connected with the positive striking rod is arranged in the sleeve, and fixing frames are arranged on the two sides of the end, away from the connecting plate, of the sleeve. A side gear is rotationally connected to the fixing frame, an inclined striking rod is connected to the side gear, and a rack in meshing transmission connection with the side gear is arranged on the side wall of the positive striking rod; through the arrangement and mutual cooperation of the inclined striking rod and the positive striking rod, the scene that the ship body is impacted by external force in different directions is simulated, and the reliability and accuracy of detection are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ship body testing, in particular to a ship body structure strength testing device. BACKGROUND

[0002] The ship body is a component of the ship, and the ship body includes deck, side plate and other structures. The structural strength of the ship body directly affects the service life of the ship. In order to ensure the safe driving of the ship, the structural strength of the ship body is detected after the ship is completed. The ship side plate is the largest detection area, and the welding strength of the ship plate affects the structural strength of the ship side plate.

[0003] The existing detection is ultrasonic detection for the weld of the ship side plate. However, the ship body is not in the state of being hit by waves or is not in the simulated state of being hit by waves during ultrasonic detection. Therefore, the detection result is not accurate. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a ship body structure strength testing device to solve the problem of inaccurate detection result of the ship side plate structure.

[0005] In order to achieve the above purpose, the present application provides a ship body structure strength testing device, which comprises a moving base plate, a stand connected to the moving base plate through a lifting piece, the lifting piece being used to control the lifting of the stand, an ultrasonic detector provided on the stand and used to detect the structure of the ship side plate, a spray gun provided on one side of the ultrasonic detector and used to mark the defect area of the ship structure detected by the ultrasonic detector, and a testing piece connected to the stand and provided above the ultrasonic detector. The testing piece comprises a driving cylinder, a connecting plate connected to the extension end of the driving cylinder, a hollow sleeve connected to one end of the connecting plate away from the driving cylinder, a positive hitting rod slidingly arranged in the sleeve, a hitting head provided at one end of the positive hitting rod away from the connecting plate, an elastic spring arranged in the sleeve and sleeved on the positive hitting rod, the middle side wall of the positive hitting rod being connected to the side wall of the sleeve away from the hitting head through the elastic spring, a fixing frame provided outside one end of the sleeve away from the connecting plate, a side gear rotatably connected to the fixing frame, and an inclined hitting rod connected to the side gear.

[0006] Optionally, the connecting plate is provided with a driving motor, an output end of the driving motor is connected with a driving rotating shaft, a side wall of the driving rotating shaft is fixedly connected with a convex strip, a sleeve ring is rotatably sleeved on the driving rotating shaft, a connecting arm is connected with a side wall of the sleeve ring, an eccentric shaft is arranged on the connecting arm, a distance between the eccentric shaft and an axis of the driving rotating shaft is smaller than a distance between an end of the convex strip away from the driving rotating shaft and the axis of the driving rotating shaft, and the connecting arm is hingedly connected with the positive hitting rod through a driving arm.

[0007] Optionally, a rotating piece is arranged between the stand and the test piece, the rotating piece comprises a rotating motor connected with the stand, and an output end of the rotating motor is connected with a driving air cylinder on the test piece.

[0008] Optionally, an accommodating groove is arranged at an end of the oblique hitting rod away from the sleeve, a traction spring is accommodated in the accommodating groove, and a second suction disc connected with the traction spring is arranged at an opening of the accommodating groove.

[0009] Optionally, the second suction disc comprises a suction disc body, a suction disc opening is arranged at one side of the suction disc body, a suction disc protrusion is arranged at the other side of the suction disc body, a placing rack is arranged at the opening of the accommodating groove, a placing opening in communication with the accommodating groove is formed in the middle of the placing rack, and the suction disc protrusion is arranged in cooperation with the placing opening.

[0010] Optionally, a roller is arranged at the lower part of the moving base plate.

[0011] Optionally, a lifting air cylinder is arranged at the lower end surface of the moving base plate, a moving plate located below the moving base plate is connected with an extension end of the lifting air cylinder, a vertical support plate is arranged at the middle of the lower end surface of the moving plate, inclined support plates are arranged at four sides of the vertical support plate, and first suction discs are arranged at the lower ends of the inclined support plates and the vertical support plate.

[0012] Optionally, an air suction pump in communication with the first suction disc is arranged on the moving plate.

[0013] The beneficial effects of the present application: the ship body structure strength testing device provided by the present application, when the ship body side plate structure needs to be detected, the testing device moves to one side of the to-be-detected position, the driving cylinder on the testing piece is elongated, the vertical hitting rod and the inclined hitting rod on the sleeve are driven to move to the area of the to-be-detected position, and then the area of the to-be-detected position is hit, the two inclined hitting rods first hit the area of the to-be-detected position on the ship body side plate structure, and with the continuous elongation of the driving cylinder, the two inclined hitting rods are oppositely deflected while contacting the area of the to-be-detected position, and the area of the to-be-detected position is pressed or hit obliquely, the rotation of the side gear drives the rack to move away from the sleeve, so that the vertical hitting rod hits the area of the to-be-detected position, which facilitates the vertical, inclined and multi-angle inclined hitting of the area of the to-be-detected position, the cooperation of the inclined hitting rod and the vertical hitting rod has an opposite pulling process, which improves the experimental strength of the area of the to-be-detected position, effectively improves the strength detection efficiency of the ship body, and through the setting and cooperation of the inclined hitting rod and the vertical hitting rod, the scene of different outward forces hitting the ship body is simulated, the reliability and accuracy of detection are improved, then the detection port of the ultrasonic detector detects the to-be-detected position, the spray gun marks the defect area on the ship body structure detected by the ultrasonic detector, and the defect position can be marked in real time, which is convenient for subsequent maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only illustrate the embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0015] Figure 1 The structural schematic diagram of the present application; Figure 2 The three-dimensional structural schematic diagram of the present application; Figure 3 The structural schematic diagram of the testing piece of the present application; Figure 4 The structural schematic diagram of the sleeve of the present application; Figure 5 The structural schematic diagram of the cooperation of the rack and the side gear of the present application.

[0016] In the figure: 1, moving base plate; 2, lifting cylinder; 3, moving plate; 4, inclined support plate; 5, vertical support plate; 6, ultrasonic detector; 7, vertical seat; 8, test piece; 9, rotating motor; 10, driving cylinder; 11, connecting plate; 12, driving motor; 13, driving shaft; 14, convex strip; 15, connecting arm; 16, driving arm; 17, eccentric shaft; 18, sleeve; 19, elastic spring; 20, straight hitting rod; 21, rack; 22, side gear; 23, inclined hitting rod; 24, fixing frame. DETAILED DESCRIPTION

[0017] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to specific embodiments and drawings.

[0018] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood as the common meanings understood by those skilled in the art to which the present application belongs. The terms "first", "second" and similar terms used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms "connect" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0019] As shown in Figures 1 to 5 A ship body structure strength testing device includes a moving base plate 1, a vertical seat 7 is connected to the moving base plate 1 through a lifting member, the lifting member can be a lifting cylinder, the lifting member is used to control the vertical seat 7 to rise and fall, the vertical seat 7 is provided with an ultrasonic detector 6 used for detecting the structure of the ship body side plate, one side of the ultrasonic detector 6 is provided with a spray gun used for marking the defect area on the ship body structure detected by the ultrasonic detector 6, the ultrasonic detector 6 is provided above with a test piece 8 connected with the vertical seat 7, and the lifting cylinder rises and falls to drive the test piece 8 to move up and down; The test piece 8 comprises a driving cylinder 10, the telescopic end of which is connected with a connecting plate 11, the end of the connecting plate 11 away from the driving cylinder 10 is connected with a hollow sleeve 18, a positive hitting rod 20 is slidably arranged in the sleeve 18, the end of the positive hitting rod 20 away from the connecting plate 11 is provided with a hitting head, an elastic spring 19 is arranged in the sleeve 18 and sleeved on the positive hitting rod 20, the middle side wall of the positive hitting rod 20 is connected with the side wall of the sleeve 18 away from the hitting head through the elastic spring 19, a fixing frame 24 is arranged outside the end of the sleeve 18 away from the connecting plate 11, a side gear 22 is rotatably connected to the fixing frame 24 through a rotating shaft, and an inclined hitting rod 23 is connected to the side gear 22, two inclined hitting rods 23 are symmetrically arranged about the positive hitting rod 20, and a rack 21 is arranged on the side wall of the positive hitting rod 20 and is in meshing transmission connection with the side gear 22.

[0020] When the ship body side plate structure needs to be detected, the test device moves to one side of the to-be-detected position, the driving cylinder 10 on the test piece 8 is elongated, the positive hitting rod 20 and the inclined hitting rod 23 on the sleeve 18 are driven to move to the area of the to-be-detected position, and then the area of the to-be-detected position is hit, the two inclined hitting rods 23 first hit the area of the to-be-detected position on the ship body side plate structure, and with the continuous elongation of the driving cylinder 10, the two inclined hitting rods 23 are oppositely deflected while contacting the area of the to-be-detected position, so that the area of the to-be-detected position is obliquely pressed or hit, the side gear 22 drives the rack 21 to move away from the sleeve 18, so that the positive hitting rod 20 hits the area of the to-be-detected position, and the area of the to-be-detected position is conveniently hit in a forward direction and at various inclined angles, the cooperation of the inclined hitting rod 23 and the positive hitting rod 20 has an opposite pulling process, the experimental strength of the area of the to-be-detected position is improved, the strength detection efficiency of the ship body is effectively improved, and then the detection port of the ultrasonic detector 6 detects the to-be-detected position, the spray gun marks the defect area on the ship body structure detected by the ultrasonic detector 6, the defect position can be marked in real time, and subsequent maintenance is facilitated.

[0021] The connecting plate 11 is provided with a driving motor 12, the output end of the driving motor 12 is connected with a driving rotating shaft 13, the side wall of the driving rotating shaft 13 is fixedly connected with a convex strip 14, a sleeve ring is rotationally sleeved on the driving rotating shaft 13, the side wall of the sleeve ring is connected with a connecting arm 15, the connecting arm 15 is provided with an eccentric shaft 17, the distance between the eccentric shaft 17 and the axis of the driving rotating shaft 13 is smaller than the distance between the end of the convex strip 14 away from the driving rotating shaft 13 and the axis of the driving rotating shaft 13, the connecting arm 15 is hinged with the positive hitting rod 20 through a driving arm 16, the driving motor 12 is started, the driving rotating shaft 13 and the convex strip 14 are driven to rotate, when the convex strip 14 abuts against the eccentric shaft 17, the convex strip 14 drives the connecting arm 15 to rotate, and then the positive hitting rod 20 is pulled to the driving cylinder 10 through the driving arm 16, in this process, the elastic spring 19 is in a gradually compressed state, after the eccentric shaft 17 reaches the position closest to the driving motor 12, the convex strip 14 continues to move, the elastic spring 19 releases the elastic potential energy, the positive hitting rod 20 has a large speed under the action of the elastic spring 19 and impacts the area to be detected, at this time, the convex strip 14 and the eccentric shaft 17 are in a separated state, the experimental intensity on the area to be detected is improved, and the strength detection efficiency of the ship body is effectively improved.

[0022] The rotating part is arranged between the stand 7 and the test piece 8, the rotating part comprises a rotating motor 9 connected with the stand 7, the output end of the rotating motor 9 is connected with the driving cylinder 10 on the test piece 8, the rotating motor 9 on the rotating part can drive the driving cylinder 10, the positive hitting rod 20 and the inclined hitting rod 23 on the test piece 8, the inclined hitting rod 23 inclines to hit the area to be detected, the rotating part provides a rotating force for the inclined hitting rod 23, so that more different outward force impact scenes of the ship body are simulated, and the detection reliability is improved.

[0023] The end of the inclined hitting rod 23 away from the sleeve 18 is provided with a containing groove, the containing groove contains a traction spring, the opening of the containing groove is provided with a second suction cup connected with the traction spring, after the inclined hitting rod 23 contacts the ship body side wall, the second suction cup is adsorbed on the ship body side wall, then the hitting end of the inclined hitting rod 23 moves away from the positive hitting rod 20, the second suction cup pulls the ship body side wall, the experimental intensity on the area to be detected is improved, and the strength detection efficiency of the ship body is effectively improved.

[0024] The second suction cup comprises a suction cup body, one side of the suction cup body is provided with a suction cup opening, the other side of the suction cup body is provided with a suction cup protrusion, the opening of the containing groove is provided with a placing rack, the middle part of the placing rack is provided with a placing opening in communication with the containing groove, the suction cup protrusion is arranged in cooperation with the placing opening, and the second suction cup can be reset to the placing opening on the placing rack under the traction of the spring.

[0025] The lower part of the movable base plate 1 is provided with a roller, and a brake for braking the roller is provided on one side of the roller.

[0026] A lifting cylinder 2 is provided on the lower end face of the movable base plate 1. The telescopic end of the lifting cylinder 2 is connected to a movable plate 3 located below the movable base plate 1. A vertical support plate 5 is provided in the middle of the lower end face of the movable plate 3. Diagonal support plates 4 are provided on all four sides of the vertical support plate 5. A first suction cup is provided at the lower end of both the diagonal support plate 4 and the vertical support plate 5. The lifting cylinder 2 extends downward to control the movable plate 3 to move downward. The lower ends of the diagonal support plate 4 and the vertical support plate 5 are in contact with the ground. The first suction cup is attached to the ground, which improves the stability of the movable base plate 1 and reduces the possibility of the movable base plate 1 moving when the test piece 8 tests the side wall of the ship.

[0027] The movable plate 3 is equipped with an air suction pump that is connected to the first suction cup. When the air suction pump is activated, it removes the air from the first suction cup, making it easier for the first suction cup to adhere to the ground.

[0028] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples. The invention is not limited to the above-described embodiments, that is, it does not mean that the invention must rely on the above methods and structures to be implemented. Under the concept of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0029] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A hull structure strength testing device, comprising a movable base plate, characterized in that, A stand is connected to the movable base plate via a lifting member. The lifting member is used to control the lifting and lowering of the stand. An ultrasonic detector for inspecting the hull side plate structure is provided on the stand. A spray gun for marking the defective areas on the hull structure detected by the ultrasonic detector is provided on one side of the ultrasonic detector. A test piece connected to the stand is provided above the ultrasonic detector. The test piece includes a drive cylinder, the telescopic end of which is connected to a connecting plate. A hollow sleeve is connected to the end of the connecting plate away from the drive cylinder. A positive striking rod is slidably disposed within the sleeve. A striking head is disposed at the end of the positive striking rod away from the connecting plate. An elastic spring is disposed within the sleeve and sleeved over the positive striking rod. The middle sidewall of the positive striking rod is connected to the sidewall of the sleeve away from the striking head via the elastic spring. A fixing frame is disposed on the outer side of the end of the sleeve away from the connecting plate. A side gear is rotatably connected to the fixing frame. An oblique striking rod is connected to the side gear. Two oblique striking rods are symmetrically arranged about the positive striking rod. A rack is provided on the sidewall of the positive striking rod, meshing and driving with the side gear.

2. The hull structure strength testing device according to claim 1, characterized in that, A drive motor is provided on the connecting plate, and the output end of the drive motor is connected to a drive shaft. A protrusion is fixedly connected to the side wall of the drive shaft. A collar is rotatably sleeved on the drive shaft. A connecting arm is connected to the side wall of the collar. An eccentric shaft is provided on the connecting arm. The distance between the eccentric shaft and the axis of the drive shaft is less than the distance between the end of the protrusion away from the drive shaft and the axis of the drive shaft. The connecting arm is hinged to the positive striking rod by driving the arm.

3. The hull structure strength testing device according to claim 1, characterized in that, A rotating component is provided between the stand and the test piece. The rotating component includes a rotating motor connected to the stand, and the output end of the rotating motor is connected to a drive cylinder on the test piece.

4. The hull structure strength testing device according to claim 1, characterized in that, The oblique striking rod has a receiving groove at one end away from the sleeve, the receiving groove accommodating a traction spring, and a second suction cup connected to the traction spring is provided at the opening of the receiving groove.

5. The hull structure strength testing device according to claim 4, characterized in that, The second suction cup includes a suction cup body, a suction cup opening on one side of the suction cup body, a suction cup protrusion on the other side of the suction cup body, a placement rack at the opening of the receiving groove, a placement opening in the middle of the placement rack that communicates with the receiving groove, and the suction cup protrusion that cooperates with the placement opening.

6. The hull structure strength testing device according to claim 1, characterized in that, The lower part of the movable base plate is provided with rollers.

7. The hull structure strength testing device according to claim 6, characterized in that, A lifting cylinder is provided on the lower end face of the movable base plate. The telescopic end of the lifting cylinder is connected to a movable plate located below the movable base plate. A vertical support plate is provided in the middle of the lower end face of the movable plate. Diagonal support plates are provided on all four sides of the vertical support plate. A first suction cup is provided at the lower end of both the diagonal support plate and the vertical support plate.

8. The hull structure strength testing device according to claim 7, characterized in that, The movable plate is equipped with a suction pump that is connected to the first suction cup.

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