Fatigue node welding seam polishing inspection tool

Abstract

The utility model discloses a fatigue node welding seam polishing inspection tool, which belongs to the technical field of welding and comprises a steel plate ruler, scale marks are arranged on a first edge of the steel plate ruler to inspect the thickness of materials, and a second edge and a third edge of the steel plate ruler form a radian ruler through arc edge transition to inspect the flatness of a welding seam on the inner wall of a pipeline. A reference surface is arranged on the fourth edge of the steel plate ruler and abuts against the reference position; the steel plate ruler is provided with a sliding block, the sliding block can slide relative to the steel plate ruler, when the reference surface abuts against the reference position, the sliding block makes contact with the to-be-detected position, and the flatness of the weld thickness of the weld joint is detected by observing the sliding distance of the sliding block. The utility model provides a multifunctional inspection ruler which meets all the requirements of steel pipe welding and polishing weld joint inspection, and the device simply, efficiently and conveniently solves the problem that the fatigue node weld joint polishing standard inspection is difficult.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding, and in particular relates to a fatigue node weld grinding inspection tool. Background Art

[0002] Offshore platforms are places for offshore operations to develop and utilize marine resources. With the rapid development of marine development, the demand for offshore platforms is increasing. Cylindrical components have excellent hydrodynamic performance, high strength-to-weight ratio, and excellent buckling strength performance in all aspects. Therefore, offshore structures, such as jackets and semi-submersible platforms, are mainly composed of welded steel pipes. Due to the influence of structural form and welding, a large stress concentration will occur near the intersection line of the pipe node. High-stress pipe nodes will easily suffer fatigue damage under the action of alternating stress. Ensuring that the quality of welds meets fatigue reliability requirements is crucial to ensuring the structural requirements of the platform.

[0003] In order to meet the structural design strength and ensure the design fatigue life of the nodes, the key nodes are usually smoothed by welding to achieve the design fatigue life and ensure the welding quality. The staff can grind the nodes during welding to improve the fit and avoid high stress concentration at the weld toe.

[0004] In the prior art, when inspecting the flatness of the weld after welding and grinding of steel pipes, different types of welding inspection rulers are needed to check the flatness of the weld height and weld thickness respectively, and a disc-shaped hardwood board is also needed to inspect the flatness of the arc surface after welding and grinding of the steel pipes. Many inspection tools are used and the inspection efficiency is low. No multifunctional ruler can meet all the needs of steel pipe welding and grinding weld inspection.

[0005] Therefore, it is urgent to design a fatigue node weld grinding inspection tool to solve the above-mentioned problem of multiple inspection tools and low inspection efficiency during the grinding weld inspection process. Utility Model Content

[0006] In order to solve the technical problems mentioned in the background technology that the steel pipe welding grinding inspection requires many tools and the inspection efficiency is low, a fatigue node weld grinding inspection tool is provided to solve the above problems.

[0007] To achieve the above purpose, the specific technical solution of a fatigue node weld grinding inspection tool of the utility model is as follows:

[0008] A fatigue node weld grinding inspection tool comprises a steel plate ruler, a first side of the steel plate ruler is provided with scale marks to inspect the thickness of the material, and a second side and a third side of the steel plate ruler are transitioned through arc edges to form an arc ruler to inspect the flatness of the weld on the inner wall of the pipeline;

[0009] A reference surface is provided on the fourth side of the steel plate ruler to abut against the reference position; a sliding block is provided on the steel plate ruler, and the sliding block can slide relative to the steel plate ruler. When the reference surface abuts against the reference position, the sliding block contacts the position to be measured, and the flatness of the weld thickness is inspected by observing the sliding distance of the sliding block.

[0010] Furthermore, the sliding direction of the sliding block is perpendicular to the reference plane.

[0011] Furthermore, a measuring distance is provided between the reference surface and the sliding block.

[0012] Furthermore, a slide groove is provided on the steel plate ruler, and the slide groove is slidably connected to the sliding block.

[0013] Furthermore, both the slide groove and the sliding block are provided with scale marks, and when the end of the scale mark of the sliding block coincides with the end of the scale mark of the slide groove, the sliding block is flush with the reference surface.

[0014] Furthermore, the slide groove penetrates the steel plate ruler along the sliding direction, so that the sliding block can slide out along the slide groove and separate from the steel plate ruler.

[0015] Furthermore, a spring card is provided between the slide groove and the sliding block, the spring card is fixedly connected to the slide groove, and the spring card abuts against the sliding block.

[0016] Furthermore, a protruding block is fixedly connected to the fourth side of the steel plate ruler, the protruding block is located at one end close to the first side of the steel plate ruler, and the end of the protruding block away from the fourth side of the steel plate ruler is the reference plane.

[0017] Furthermore, a portable round hole is provided on the steel plate ruler.

[0018] Furthermore, a measuring tip is provided at one end of the sliding block close to the position to be measured, and the vertex of the measuring tip is located on the center line of the sliding block.

[0019] The utility model provides a fatigue node weld grinding inspection tool with the following advantages: the utility model provides a multifunctional inspection ruler that meets all the requirements of steel pipe welding and grinding weld inspection. The device solves the problem of difficult standard inspection of fatigue node weld grinding in a simple, efficient and convenient manner, and can provide reliable inspection accuracy for large-angle weld grinding inspection of ships and cylindrical FPSOs, while greatly improving engineering inspection efficiency and convenience, saving engineering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a fatigue node weld grinding inspection tool of the utility model;

[0021] Figure 2 It is a schematic diagram of the sliding structure of the steel plate ruler and the sliding block of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the slide groove and the sliding block of the utility model.

[0023] Explanation of markings in the figure: 1. Steel plate ruler; 100, first side; 200, second side; 300, third side; 400, fourth side; 2. Arc ruler; 3. Reference plane; 4. Sliding block; 5. Slide groove; 6. Spring card; 7. Raised block; 8. Portable round hole; 9. Measuring tip. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0026] Please refer to the attached Figure 1 To Attachment Figure 3 The utility model describes a fatigue node weld grinding inspection tool.

[0027] In the process of testing the flatness of the weld after welding and grinding of steel pipes, different types of welding inspection rulers and disc-shaped hardwood boards are needed to comprehensively test the flatness of the weld of the steel pipes. Many inspection tools are used and the inspection efficiency is low.

[0028] like Figure 1 As shown, a fatigue node weld grinding inspection tool in the utility model includes a steel plate ruler 1, and a scale mark is provided on the first side 100 of the steel plate ruler 1 to inspect the thickness of materials such as steel plates and steel pipes;

[0029] Preferably, the accuracy of the scale marks on the first side 100 is 0.5 mm to meet the inspection requirements of most materials at the construction site.

[0030] The second side 200 and the third side 300 of the steel plate ruler 1 are formed into an arc ruler 2 through an arc edge transition. The arc ruler 2 is used to check the flatness of the weld on the inner wall of the pipeline. After the arc ruler 2 is in contact with the weld on the inner wall of the pipeline after grinding, if a 1mm steel wire cannot be inserted between the arc ruler 2 and the weld on the inner wall after grinding, it means that the grinding is qualified; according to the different curvatures of the arc ruler 2, a plurality of fatigue node weld grinding inspection tools of different specifications can be set to adapt to the welding grinding flatness inspection of pipes of different specifications. The arc ruler 2 is set on the steel plate ruler 1. Compared with the disc-shaped hardwood board, the arc ruler 2 will not be deformed or damaged. The arc ruler 2 is not only reusable, but also improves the accuracy of the test results. The use of steel material to make the arc ruler 2 also solves the problem that the processing precision of the hardwood board is low and the processing size of the hardwood board cannot meet the larger arc position.

[0031] A reference surface 3 is provided on the fourth side 400 of the steel plate ruler 1 to abut against the reference position;

[0032] A sliding block 4 is provided on the steel plate ruler 1, and the sliding block 4 can slide relative to the steel plate ruler 1. When the reference surface 3 abuts the reference position, the sliding block 4 contacts the position to be measured, and the flatness of the weld thickness is inspected by observing the sliding distance of the sliding block 4. When in use, the staff puts the reference surface 3 of the steel plate ruler 1 against the reference position, pushes the sliding block 4 with their fingers to make the sliding block 4 contact the position to be measured, and observes the sliding distance of the sliding block 4.

[0033] Preferably, the sliding direction of the sliding block 4 is perpendicular to the reference plane 3, so that the sliding distance of the sliding block 4 is the height difference between the reference position and the position to be measured, which is convenient for measurement and observation.

[0034] A measuring distance is provided between the reference plane 3 and the sliding block 4, so that when there is an obstruction between the reference position and the position to be measured, the reference plane 3 and the sliding block 4 cross the obstruction to measure the flatness of the weld thickness.

[0035] like Figure 2 As shown, a slide groove 5 is provided on the steel plate ruler 1 , and the slide groove 5 is slidably connected to the sliding block 4 , so that the sliding block 4 can slide along the slide groove 5 relative to the steel plate ruler 1 .

[0036] Both the slide groove 5 and the sliding block 4 are provided with scale marks. When the end of the scale mark of the sliding block 4 coincides with the end of the scale mark of the slide groove 5, the sliding block 4 is flush with the reference surface 3. Specifically, when the 0 scale point on the slide groove 5 is flush with the 0 scale point on the sliding block 4, the sliding block 4 is flush with the reference surface 3.

[0037] Preferably, the accuracy of the scale marks on the slide groove 5 is 0.05 mm, and the accuracy of the scale marks on the sliding block 4 is 0.05 mm, so as to meet the inspection requirements of the weld thickness and flatness of the weld at the construction site.

[0038] like Figure 2 and Figure 3 As shown, the slide groove 5 penetrates the steel plate ruler 1 along the sliding direction, so that the sliding block 4 can slide out along the slide groove 5 and separate from the steel plate ruler 1. The sliding block 4 and the slide groove 5 are detachably connected, which is convenient for replacement when the sliding block 4 is worn or damaged.

[0039] A spring card 6 is provided between the chute 5 and the sliding block 4, the spring card 6 is fixedly connected to the chute 5, and the spring card 6 abuts against the sliding block 4. The spring card 6 is tilted in the middle, and the tilted part is in contact and squeezed with the sliding block 4, which is used to provide the sliding block 4 with a continuous positive pressure in a direction perpendicular to the contact surface of the chute 5 and the sliding block 4, increase the friction of the sliding block 4 when sliding in the chute 5, and facilitate the staff to slide and measure.

[0040] A raised block 7 is fixedly connected to the fourth side 400 of the steel plate ruler 1. The raised block 7 is located at one end close to the first side 100 of the steel plate ruler 1. The end of the raised block 7 away from the fourth side 400 of the steel plate ruler 1 is the reference plane 3, which is convenient for setting the measurement interval and making the measurement easier. In order to facilitate holding and improve the comfort of use, a chamfer is set at the junction of the raised block 7 and the fourth side 400 of the steel plate ruler 1.

[0041] The steel plate ruler 1 is also provided with a portable round hole 8 for the convenience of carrying by the staff.

[0042] A measuring tip 9 is provided at one end of the sliding block 4 close to the position to be measured, and the vertex of the measuring tip 9 is located on the center line of the sliding block 4, so as to accurately measure the weld thickness point of the weld.

[0043] Preferably, an arc or chamfered structure is provided at one end of the sliding block 4 away from the measuring tip 9 to avoid injury to persons when replacing the sliding block 4 and to facilitate pushing the sliding block 4 into the sliding groove 5 .

[0044] Compared with traditional weld grinding detection tools, the utility model provides a multifunctional weld grinding inspection ruler for determining contour line shape through measurement, customization, firmness and economy and efficiency, which can solve the problem of difficult inspection of fatigue node weld grinding standards simply, efficiently and conveniently, and can provide reliable inspection accuracy for large-angle weld grinding inspection of ships and cylindrical FPSOs, while greatly improving engineering inspection efficiency and convenience, saving engineering costs and having high practical application value.

[0045] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A fatigue node weld grinding inspection tool, characterized in that: It includes a steel plate ruler, a first side of which is provided with scale marks to check the thickness of the material, and a second side and a third side of the steel plate ruler are transitioned through arc edges to form an arc ruler to check the flatness of the weld on the inner wall of the pipeline; A reference surface is provided on the fourth side of the steel plate ruler to abut against the reference position; a sliding block is provided on the steel plate ruler, and the sliding block can slide relative to the steel plate ruler. When the reference surface abuts against the reference position, the sliding block contacts the position to be measured, and the flatness of the weld thickness is inspected by observing the sliding distance of the sliding block.

2. The fatigue node weld grinding inspection tool according to claim 1 is characterized in that: The sliding direction of the sliding block is perpendicular to the reference surface.

3. The fatigue node weld grinding inspection tool according to claim 1 or 2, characterized in that: A measuring distance is arranged between the reference surface and the sliding block.

4. The fatigue node weld grinding inspection tool according to claim 2, characterized in that: A slide groove is arranged on the steel plate ruler, and the slide groove is slidably connected with the sliding block.

5. The fatigue node weld grinding inspection tool according to claim 4, characterized in that: The slide groove and the sliding block are both provided with scale marks. When the end of the scale mark of the sliding block coincides with the end of the scale mark of the slide groove, the sliding block is flush with the reference surface.

6. The fatigue node weld grinding inspection tool according to claim 5, characterized in that: The slide groove penetrates the steel plate ruler along the sliding direction, so that the sliding block can slide out along the slide groove and be separated from the steel plate ruler.

7. The fatigue node weld grinding inspection tool according to claim 4 or 6, characterized in that: A spring card is arranged between the slide groove and the sliding block. The spring card is fixedly connected to the slide groove, and the spring card abuts against the sliding block.

8. The fatigue node weld grinding inspection tool according to claim 1, characterized in that: A protruding block is fixedly connected to the fourth side of the steel plate ruler. The protruding block is located at one end close to the first side of the steel plate ruler, and one end of the protruding block away from the fourth side of the steel plate ruler is the reference surface.

9. The fatigue node weld grinding inspection tool according to claim 1, characterized in that: A portable round hole is provided on the steel ruler.

10. The fatigue node weld grinding inspection tool according to claim 1, characterized in that: A measuring tip is provided at one end of the sliding block close to the position to be measured, and the vertex of the measuring tip is located on the center line of the sliding block.

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