Welding Strength Detector for Protective Equipment of Civil Air Defense Projects

Abstract

The present invention discloses a welding strength detector for civil air defense project protection equipment, including a test bench. Both sides of the top of the test bench are fixedly connected with fixing plates. One side of each of the two fixing plates is penetrated and provided with a sliding groove. Two sliding rollers are slidably connected between the inner surfaces of the two sliding grooves. The outer surfaces of the two sliding rollers are fixedly connected with extrusion rollers for extruding test pieces. By arranging two sliding rollers between the two fixing plates and using the extrusion rollers on the sliding rollers to clamp the plate whose welding strength needs to be detected, and inserting the plate into the limiting groove on the limiting rod. When the extrusion roller is pushed to slide upward on the inner surface of the sliding groove, the limiting groove limits the side of the plate, so as to avoid deformation at non-welding positions, further ensure that the deformation occurs at the welding position, and thus reduce the detection error.

Description

Technical Field

[0001] The present invention relates to the technical field of welding strength detection, and specifically to a welding strength detector for protective equipment in civil air defense projects. Background Art

[0002] Welding strength is a very important issue for both manufacturers and users. Only sufficient welding strength can ensure the full play of the protective equipment in civil air defense projects. Therefore, manufacturers must strictly inspect the welding strength of the protective equipment in civil air defense projects.

[0003] A Chinese patent discloses a welding strength detector for protective equipment in civil air defense projects (publication number: CN215894230U). This patent uses a hydraulic cylinder to push the lower end of the clamping plate, causing the upper end of the clamping plate to rotate inward. Under the action of the clamping plate, the object to be detected has a tendency to deform, making the object to be detected in a stress state. When the clamping plate deforms, the non-welded part absorbs part of the force and deforms simultaneously, resulting in a smaller force received at the welded part, and thus a larger error in the detected data. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding strength detector for protective equipment in civil air defense projects. By arranging two sliding rollers between two fixed plates and using the pressing rollers on the sliding rollers to clamp the plate whose welding strength needs to be detected, and inserting the plate into the limiting groove on the limiting rod. When the pressing roller is pushed to slide upward on the inner surface of the sliding groove, the limiting groove limits the side of the plate, so as to avoid deformation at non-welded positions, further ensure that the deformation occurs at the welded position, and thus reduce the detection error.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A welding strength detector for protective equipment in civil air defense projects includes a test bench. Both sides of the top of the test bench are fixedly connected with fixed plates. One side of each of the two fixed plates is penetrated with a sliding groove. Two sliding rollers are slidably connected between the inner surfaces of the two sliding grooves. The outer surfaces of the two sliding rollers are fixedly connected with pressing rollers for pressing the test piece. Fixed rods are penetrated through the four sides of the top of the test bench. A rotatable limiting rod is arranged at the top of the fixed rod. Rotating blocks are fixedly connected to the top of the test bench and below the limiting rod. The inner surface of the rotating block is rotatably connected with a telescopic rod for pushing the limiting rod. A limiting groove is opened on one side of the limiting rod.

[0007] As a further solution of the present invention: A rolling groove is opened at the top of the fixed rod. A rotating bead is fixedly connected to the bottom of the limiting rod. The outer surface of the rotating bead is in rolling connection with the inner surface of the rolling groove.

[0008] As a further solution of the present invention: a pushing groove is formed at the bottom of the limiting rod, a horizontal block is fixedly connected to the top of the telescopic rod, and the outer surface of the horizontal block is slidably connected to the inner surface of the pushing groove.

[0009] As a further solution of the present invention: a cylinder is fixedly connected to the bottom of the test bench, the output end of the cylinder penetrates through the test bench and extends to the outside of the test bench, and an installation block for pushing the sliding roller to move is fixedly connected to the output end of the cylinder.

[0010] As a further solution of the present invention: rotating plates are arranged at both ends of the two sliding rollers, a connecting bolt penetrates through the top of the rotating plate located above, the bottom end of the connecting bolt penetrates through the rotating plate and extends to the outside of the rotating plate, and an upper nut and a lower nut are sequentially threadedly connected to the outer surface of the connecting bolt from top to bottom.

[0011] As a further solution of the present invention: a blind hole is formed in the top of the installation block, and the inner surface of the blind hole is adapted to the bottom end of the connecting bolt.

[0012] As a further solution of the present invention: rotating grooves are rotatably connected to both ends of the sliding roller, a sliding plate is slidably connected to the inner surface of the rotating groove, a sliding rod is fixedly connected to one side of the sliding plate, and one end of the sliding rod is fixedly connected to one side of the rotating plate.

[0013] As a further solution of the present invention: an external thread is formed on the surface of the fixed rod, and positioning nuts are threadedly connected to the surface of the external thread above and below the test bench.

[0014] The beneficial effects of the present invention:

[0015] (1) In the present invention, by arranging two sliding rollers between the two fixing plates, and using the pressing rollers on the sliding rollers to clamp the plate to be detected for welding strength, and inserting the plate into the limiting groove on the limiting rod, when the pressing roller is pushed to slide upward on the inner surface of the sliding groove, the limiting groove limits the side of the plate, so as to avoid deformation at non-welding positions, further ensuring that the deformation occurs at the welding position, thereby reducing the detection error.

[0016] (2) In the present invention, by arranging rotating grooves at both ends of the sliding roller, the sliding rod can be rotated, so as to adjust the position of the rotating plate. After removing the connecting bolt from the rotating plate, rotate the rotating plate to a position horizontal to the sliding groove, and then push the rotating plate to make the sliding plate slide on the inner surface of the rotation, so that the sliding roller can be removed, facilitating the replacement of pressing rollers of different sizes to be applicable to plates of different thicknesses and welds of different widths. Description of the drawings

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] Figure 1 It is a partial structural sectional view of the whole in the present invention;

[0019] Figure 2 It is a main sectional view of the limiting rod in the present invention;

[0020] Figure 3 It is a partial structural sectional view of the extrusion roller in the present invention;

[0021] Figure 4 It is the present invention Figure 1 The enlarged view of the structure of part A.

[0022] In the figure: 1, test bench; 2, fixing plate; 3, sliding groove; 4, sliding roller; 5, extrusion roller; 6, fixing rod; 7, limiting rod; 8, rotating block; 9, telescopic rod; 10, limiting groove; 11, rolling groove; 12, rotating bead; 13, rotating groove; 14, sliding rod; 15, sliding plate; 16, rotating plate; 17, connecting bolt; 18, upper nut; 19, lower nut; 20, mounting block; 21, blind hole; 22, horizontal block; 23, pushing groove; 24, cylinder; 25, positioning nut; 26, external thread. Specific embodiments

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1 - Figure 4As shown in the figure, the present invention is a welding strength detector for civil air defense project protection equipment, including a test bench 1. On both sides of the top of the test bench 1, fixing plates 2 are fixedly connected. A sliding groove 3 is penetrated and opened on one side of each of the two fixing plates 2. Two sliding rollers 4 are slidably connected between the inner surfaces of the two sliding grooves 3. A pressing roller 5 for pressing the test piece is fixedly connected to the outer surface of each of the two sliding rollers 4. Fixing rods 6 are penetrated and arranged around the top of the test bench 1. A rotatable limiting rod 7 is arranged at the top of the fixing rod 6. Rotating blocks 8 are fixedly connected to the top of the test bench 1 and below the limiting rod 7. An expansion rod 9 for pushing the limiting rod 7 is rotatably connected to the inner surface of the rotating block 8. A limiting groove 10 is opened on one side of the limiting rod 7. By arranging two sliding rollers 4 between the two fixing plates 2 and using the pressing rollers 5 on the sliding rollers 4 to clamp the plate to be tested for welding strength, and inserting the plate into the limiting groove 10 on the limiting rod 7. When the pressing roller 5 is pushed to slide upward on the inner surface of the sliding groove 3, the limiting groove 10 limits the side of the plate, so as to avoid deformation at non-welding positions, further ensure that the deformation occurs at the welding position, and thus reduce the detection error.

[0025] A rolling groove 11 is opened at the top of the fixing rod 6. A rotating bead 12 is fixedly connected to the bottom of the limiting rod 7. The outer surface of the rotating bead 12 is in rolling connection with the inner surface of the rolling groove 11. A pushing groove 23 is opened at the bottom of the limiting rod 7. A horizontal block 22 is fixedly connected to the top of the expansion rod 9. The outer surface of the horizontal block 22 is slidably connected to the inner surface of the pushing groove 23.

[0026] A cylinder 24 is fixedly connected to the bottom of the test bench 1. The output end of the cylinder 24 penetrates through the test bench 1 and extends to the outside of the test bench 1. The output end of the cylinder 24 is fixedly connected with a mounting block 20 for pushing the sliding roller 4 to move. Rotating plates 16 are arranged at both ends of the two sliding rollers 4. A connecting bolt 17 is arranged through the top of the upper rotating plate 16. The bottom end of the connecting bolt 17 penetrates through the rotating plate 16 and extends to the outside of the rotating plate 16. The outer surface of the connecting bolt 17 is sequentially threadedly connected with an upper nut 18 and a lower nut 19 from top to bottom. The top of the upper nut 18 is in contact with the bottom of the upper rotating plate 16, and the top of the lower nut 19 is in contact with the top of the lower rotating plate 16. A blind hole 21 is formed in the top of the mounting block 20, and the inner surface of the blind hole 21 is adapted to the bottom end of the connecting bolt 17. Rotating grooves 13 are rotatably connected to both ends of the sliding roller 4. A sliding plate 15 is slidably connected to the inner surface of the rotating groove 13. One side of the sliding plate 15 is fixedly connected with a sliding rod 14, and one end of the sliding rod 14 is fixedly connected with one side of the rotating plate 16. By arranging the rotating grooves 13 at both ends of the sliding roller 4, the sliding rod 14 can be rotated, so as to adjust the position of the rotating plate 16. After removing the connecting bolt 17 from the rotating plate 16, the rotating plate 16 is rotated to a position horizontal to the sliding groove 3, and then the rotating plate 16 is pushed to make the sliding plate 15 slide on the inner surface of the rotating groove 13, so that the sliding roller 4 can be removed, facilitating the replacement of extrusion rollers 5 of different sizes to be applicable to plates of different thicknesses and welds of different widths.

[0027] External threads 26 are formed on the surface of the fixed rod 6. Positioning nuts 25 are threadedly connected above and below the test bench 1 on the surface of the external threads 26. By rotating the two positioning nuts 25, the height of the fixed rod 6 on the test bench 1 can be adjusted, and it is convenient to remove the fixed rod 6 after turning down the lower positioning nut 25.

[0028] Working principle of the present invention: First, slide the horizontal block 22 into the inside of the pushing groove 23, insert the fixing rod 6 into the top of the test bench 1, and at this time, screw on the positioning nut 25 on the outer surface of the fixing rod 6 and below the test bench 1 to fix the height of the fixing rod 6. The plate to be detected slides into the limiting groove 10 on the limiting rod 7, then passes through the two squeezing rollers 5, and then turn the rotating plate 16 to make the rotating plate 16 in a horizontal state. At this time, pass the connecting bolt 17 through the rotating plate 16 from top to bottom, and at the same time connect the upper nut 18 to the surface of the connecting bolt 17, and then turn the lower nut 19 to the surface of the connecting bolt 17 and contact the bottom of the rotating plate 16 to clamp the plate by the two squeezing rollers 5. At this time, through the elongation of the air cylinder 24, the blind hole 21 on the mounting block 20 jacks up the connecting bolt 17, so as to push the central position of the plate upward. At the same time, the telescopic rod 9 elongates, and the horizontal block 22 slides on the inner surface of the pushing groove 23 and elongates as it rises along with the sliding roller 4 on the inner surface of the sliding groove 3, and the rotating bead 12 rotates with the outer surface of the rolling groove 11, so as to prevent the non-welded part of the plate from bending.

[0029] The above has described a detailed description of an embodiment of the present invention, but the content described above is only the preferred embodiment of the present invention and cannot be considered as being used to limit the scope of implementation of the present invention. All equal changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. Welding strength detector for civil air defense project protection equipment, including a test bench (1), on both sides of the top of the test bench (1), fixed plates (2) are fixedly connected, characterized in that, on one side of each of the two fixed plates (2), sliding grooves (3) are respectively penetrated. Between the inner surfaces of the two sliding grooves (3), two sliding rollers (4) are slidably connected. On the outer surfaces of the two sliding rollers (4), extrusion rollers (5) for extruding test pieces are fixedly connected. Around the top of the test bench (1), fixing rods (6) are respectively penetrated. At the top of the fixing rod (6), a rotatable limiting rod (7) is provided. On the top of the test bench (1) and below the limiting rod (7), rotating blocks (8) are fixedly connected. Inside the rotating block (8), a telescopic rod (9) for pushing the limiting rod (7) is rotatably connected. On one side of the limiting rod (7), a limiting groove (10) is opened; at the bottom of the limiting rod (7), a pushing groove (23) is opened. At the top of the telescopic rod (9), a horizontal block (22) is fixedly connected. The outer surface of the horizontal block (22) is slidably connected with the inner surface of the pushing groove (23); at both ends of the two sliding rollers (4), rotating plates (16) are respectively provided. Through the top of the rotating plate (16) located above, a connecting bolt (17) is penetrated. The bottom end of the connecting bolt (17) penetrates through the rotating plate (16) and extends to the outside of the rotating plate (16). From top to bottom, an upper nut (18) and a lower nut (19) are respectively threadedly connected to the outer surface of the connecting bolt (17); at both ends of the sliding roller (4), rotating grooves (13) are respectively rotatably connected. Inside the inner surface of the rotating groove (13), a sliding plate (15) is slidably connected. On one side of the sliding plate (15), a sliding rod (14) is fixedly connected. One end of the sliding rod (14) is fixedly connected with one side of the rotating plate (16).

2. The welding strength detector for civil air defense project protection equipment according to claim 1, characterized in that, at the top of the fixing rod (6), a rolling groove (11) is opened. At the bottom of the limiting rod (7), a rotating bead (12) is fixedly connected. The outer surface of the rotating bead (12) is rollingly connected with the inner surface of the rolling groove (11).

3. The welding strength detector for civil air defense project protection equipment according to claim 1, characterized in that, at the bottom of the test bench (1), a cylinder (24) is fixedly connected. The output end of the cylinder (24) penetrates through the test bench (1) and extends to the outside of the test bench (1). At the output end of the cylinder (24), a mounting block (20) for pushing the sliding roller (4) to move is fixedly connected.

4. The welding strength detector for civil air defense project protection equipment according to claim 3, characterized in that, at the top of the mounting block (20), a blind hole (21) is opened. The inner surface of the blind hole (21) is adapted to the bottom end of the connecting bolt (17).

5. The welding strength detector for civil air defense project protection equipment according to claim 1, characterized in that, The surface of the fixed rod (6) is provided with an external thread (26), and positioning nuts (25) are threadedly connected to the surface of the external thread (26) above and below the test bench (1).

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