Welding seam detection device for steel structure factory building

Abstract

The invention discloses a steel structure factory building welding seam detection device, which comprises a base, the upper side wall of the base is fixedly connected with a vertically arranged multi-stage telescopic arm, the end part of the multi-stage telescopic arm is fixedly connected with a connecting box body, the end part of the connecting arm is fixedly connected with a telescopic cylinder, and the end part of the telescopic cylinder is fixedly provided with a gas detection mechanism; the start detection mechanism and the optical detection mechanism are arranged to realize double detection of the welding seam, the detection plate composed of a mild steel plate and a silica gel plate is in contact with the plant column, and an extrusion fitting plate pushes the detection plate to deform and cling to the outer wall of the plant column, so that on one hand, cling of the detection plate to the outer wall of the plant column is ensured; on the other hand, the detection plate can be suitable for detection work of factory building column welding seams with different diameters, meanwhile, the second arc-shaped plate can rotate along the outer wall of the factory building column, the welding seam detection work at different positions is achieved, and the welding seam detection work of a whole circle can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and specifically to a weld detection device for steel structure workshops. Background Art

[0002] A steel structure workshop refers to an industrial workshop mainly made of steel as building materials, composed of steel frame structures, steel columns, steel beams and other components. Due to its high structural strength, good durability, short construction period and flexible space layout, steel structure workshops are widely used in fields such as manufacturing, warehousing and logistics, commerce and public buildings.

[0003] The detection of steel structure workshop welds is an important link to ensure structural safety and quality. As the connecting part of the steel structure, if there are defects in the welds, it may affect the stability of the entire structure. Common steel structure welding defects include cracks, pores, slag inclusions, incomplete penetration, etc. Therefore, it is very necessary to conduct a comprehensive inspection of the welds. Common weld defects: cracks, incomplete penetration. Weld cracks are one of the most common defects, which may be caused by improper welding process, too fast welding speed, uneven cooling, etc.; Incomplete penetration: Incomplete penetration means that the depth of the weld is insufficient and it fails to fully fuse into the base material, which may lead to insufficient joint strength.

[0004] The detection of column welds in workshops is an important link to ensure the safety and stability of building structures. Column welds are usually used to connect workshop columns to foundations, beams or other structural components. Therefore, the quality of the welds is directly related to the load-bearing capacity and safety of the structure. Since the workshop columns are generally circular in structure, a complete circumferential detection work needs to be carried out to completely determine the detection situation of the welds. And how to complete the detection work of a complete circle of welds is an urgent problem to be solved at present. Summary of the Invention

[0005] The purpose of the present invention is to provide a weld detection device for steel structure workshops to solve the problems raised in the above background art.

[0006] A weld detection device for steel structure workshops includes a base. A vertically arranged multi-stage telescopic arm is fixedly connected to the upper side wall of the base. The end of the multi-stage telescopic arm is fixedly connected to a connecting box body. Two connecting arms are symmetrically and fixedly connected to the outer walls on both sides of the connecting box body. The end of the connecting arm is fixedly connected to a telescopic cylinder, and a gas detection mechanism is fixed at the end of the telescopic cylinder; An optical detection mechanism is arranged on the outer wall of the connecting box body. The optical detection mechanism includes a support arm fixedly connected to the outer wall of the connecting box body. The end of the support arm is fixedly connected to an arc-shaped plate I located below the detection mechanism. An ultrasonic detection probe, a radiation source and a detector connected to the radiation source are installed on the surface of the arc-shaped plate I In the above-mentioned weld detection device for a steel structure workshop, the gas detection mechanism includes a connecting cylinder fixed to the end of the telescopic cylinder. An arc-shaped plate II is fixedly connected to the end of the connecting cylinder. A right-angle plate I is fixedly connected to the upper side wall of the arc-shaped plate II. A fixed rod is fixedly connected to the end of the right-angle plate I. A detection plate is fixedly connected to the end of the fixed rod. A detection groove is formed in the outer wall of the detection plate. An air inlet pipe is connected to the lower side wall of the detection plate. A through hole communicating with the detection groove and the air inlet pipe is formed in the lower side wall of the detection plate. A piston cylinder is fixed to the upper side wall of the detection plate. An opening communicating with the piston cylinder and the detection groove is formed in the upper side wall of the detection plate. A piston is slidably arranged in the piston cylinder. A piston rod is fixedly connected to the upper side wall of the piston. A right-angle plate II is fixedly connected to the upper side wall of the piston cylinder. A trigger switch located above the piston rod is installed on the top wall of the end of the right-angle plate II. An alarm connected to the trigger switch is installed on the outer wall of the right-angle plate II.

[0007] In the above-mentioned weld detection device for a steel structure workshop, two mounting openings symmetrically arranged along the midline are formed in the outer wall of the arc-shaped plate II away from the connecting cylinder. A self-resetting rotating shaft is installed in the mounting opening. A connecting plate is fixedly connected to the outer wall of the self-resetting rotating shaft. An electric roller is installed at the end of the connecting plate.

[0008] In the above-mentioned weld detection device for a steel structure workshop, the self-resetting rotating shaft includes a rotating shaft body and a torsion spring sleeved on the outer wall of the rotating shaft body.

[0009] In the above-mentioned weld detection device for a steel structure workshop, the detection plate is composed of a soft steel plate at the rear and a silica gel plate fixed to the outer wall of the soft steel plate. The detection groove is formed in the silica gel plate. A fitting mechanism is arranged on the arc-shaped plate II. The fitting mechanism includes a through hole formed in the arc-shaped plate II. Two rotating shafts are installed in the through hole. An extrusion and fitting plate is fixedly connected to the outer wall of the rotating shaft. An electric telescopic rod is fixed in the connecting cylinder. Gear rings are fixedly sleeved on the outer walls of the two rotating shafts. A tooth plate with its end located between the two gear rings is fixedly connected to the driving end of the electric telescopic rod. Saw teeth meshing with the gear rings are arranged on both outer side walls of the end of the tooth plate.

[0010] In the above-mentioned weld detection device for a steel structure workshop, a plurality of universal wheels are installed on the lower side wall of the base.

[0011] In the above-mentioned weld detection device for a steel structure workshop, an air pump connected to the end of the air inlet pipe is arranged in the connecting box.

[0012] By adopting the above technical solution, the detection work of the entire circle of the weld on the outer wall of the workshop column is realized.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. Set the second arc-shaped plate and the electric roller. After the second arc-shaped plate moves inward, the electric roller abuts against the outer wall of the factory building column. On the one hand, the movement of the second arc-shaped plate can make the detection contact the weld of the factory building column. On the other hand, the rotation of the electric roller can realize the rotation of the second arc-shaped plate on the outer wall of the factory building column, so as to realize the contact work of the weld at different positions; 2. When performing the weld detection work, the two second arc-shaped plates approach each other until the detection plate contacts the weld on the outer wall of the factory building column. Start the air pump to introduce the air flow into the air inlet pipe, and then introduce the air flow into the detection groove through the air inlet pipe. The air flow in the detection groove flows out through the opening into the piston cylinder. As the air flow is pumped in, it pushes the piston plate and the piston rod to move upward. The piston rod contacts and presses the trigger switch, so that the alarm is turned on and an alarm is issued. By issuing the alarm, it is determined that all the air flow enters the piston cylinder and pushes the piston rod to move upward. When there are problems such as incomplete penetration and missed welding in the weld, the air flow will flow out from the weld, that is, the air flow rate decreases within a certain time and cannot push the piston rod to lift up to press the trigger switch. Therefore, whether there are problems such as missed welding and incomplete welding in the weld can be determined by whether the alarm of the alarm is issued; 3. The detection plate is designed with a soft steel plate on the outside and a silica gel plate on the inside, so that the detection plate can be applied to factory building columns with different diameters. When the factory building column with a large diameter contacts the detection plate, it pushes the two ends of the detection plate to deform outward. When the factory building column with a small diameter contacts the detection plate, the two ends of the detection plate cannot fully contact or cannot contact the outer wall of the factory building column. At this time, the detection plate is deformed by squeezing the fitting plate, so that it can be fully abutted against the outer wall of the factory building column, increasing the applicability of the detection; 4. Set up an optical detection mechanism. Ultrasonic detection can effectively detect internal defects in the weld, such as cracks, pores, incomplete penetration, etc. The ray penetrates the weld, and the detector receives the image formed after the ray passes through the material to analyze the internal quality of the weld. When the second arc-shaped plate rotates along the outer wall of the factory building column, the ultrasonic detection probe and the ray source can complete the weld detection work for one circle; In summary, the present invention realizes the double detection of the weld by setting up a starting detection mechanism and an optical detection mechanism, and uses a detection plate composed of a soft steel plate and a silica gel plate to contact the factory building column. The squeezing fitting plate pushes the detection plate to deform and fit tightly against the outer wall of the factory building column. On the one hand, it ensures the tight fit between the detection plate and the outer wall of the factory building column. On the other hand, it enables the detection plate to be applicable to the detection work of the welds of factory building columns with different diameters. At the same time, the second arc-shaped plate can rotate along the outer wall of the factory building column to realize the weld detection work at different positions, and thus the weld detection work for one whole circle can be realized. Description of the Drawings

[0014] Figure 1 It is a schematic external structure diagram of a steel structure factory building weld detection device proposed by the present invention; Figure 2Schematic diagram of the connection structure between the second arc-shaped plate and the detection plate in a weld detection device for a steel structure factory building proposed herein; Figure 3 For Figure 2 Enlarged view of the structure of part A in Figure 4 Schematic diagram of the use state when a weld detection device for a steel structure factory building proposed by the present invention is used to detect factory building columns; Figure 5 For Figure 2 Schematic diagram of the structure of the part.

[0015] In the figure: 1, base; 2, multi-stage telescopic arm; 3, connecting box body; 4, connecting arm; 5, ultrasonic detection probe; 6, support arm; 7, first arc-shaped plate; 8, telescopic cylinder; 9, second arc-shaped plate; 10, connecting cylinder; 11, first right-angle plate; 12, fixed rod; 13, detection plate; 14, air inlet pipe; 15, piston cylinder; 16, second right-angle plate; 17, detection groove; 18, self-resetting rotating shaft; 19, connecting plate; 20, electric roller; 21, through hole; 22, extrusion and fitting plate; 23, toothed plate; 24, factory building column; 25, piston rod. Specific embodiments

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0017] Please refer to Figures 1-5, the present invention provides a technical solution: a weld detection device for a steel structure factory building, including a base 1. A plurality of universal wheels are installed on the lower side wall of the base 1. A vertically arranged multi-stage telescopic arm 2 is fixedly connected to the upper side wall of the base 1. The end of the multi-stage telescopic arm 2 is fixedly connected to a connecting box body 3. Two connecting arms 4 are symmetrically and fixedly connected to the outer walls on both sides of the connecting box body 3. A telescopic cylinder 8 is fixedly connected to the end of the connecting arm 4. A gas detection mechanism is fixed to the end of the telescopic cylinder 8. The gas detection mechanism includes a connecting cylinder 10 fixed to the end of the telescopic cylinder 8. An arc-shaped plate two 9 is fixedly connected to the end of the connecting cylinder 10. Two mounting openings symmetrically arranged along the midline are formed on the outer wall of the arc-shaped plate two 9 away from the connecting cylinder 10. A self-resetting rotating shaft 18 is installed in the mounting opening. A connecting plate 19 is fixedly connected to the outer wall of the self-resetting rotating shaft 18. An electric roller 20 is installed at the end of the connecting plate 19. Through the telescoping of the multi-stage telescopic arm 2, the height of the connecting arm 4 and the arc-shaped plate two 9 can be adjusted, so that the arc-shaped plate two 9 can detect the welds at different heights of the factory building column 24. After the arc-shaped plate two 9 moves to the outside of the weld, the movable end of the telescopic cylinder 8 extends to make the two arc-shaped plates two 9 move towards one side of the factory building column 24 until the detection plate 13 is fully pressed against the outer wall of the factory building column 24. At this time, the self-resetting rotating shaft 18 is in a twisted state (since the electric rollers 20 are initially in a close state, in order to make the detection plate 13 contact the factory building column 24, the arc-shaped plate two 9 needs to move forward. After the two electric rollers 20 contact the factory building column 24, they open outward until the detection plate 13 contacts the outer wall of the factory building column 24). When the arc-shaped plate two 9 moves towards the side away from the factory building column 24 subsequently, under the action of the torsion spring, the self-resetting rotating shaft 18 can automatically reset to the original position.

[0018] A right-angled plate one 11 is fixedly connected to the upper side wall of the arc-shaped plate two 9. A fixing rod 12 is fixedly connected to the end of the right-angled plate one 11. A detection plate 13 is fixedly connected to the end of the fixing rod 12. A detection groove 17 is formed in the outer wall of the detection plate 13. An air inlet pipe 14 is connected to the lower side wall of the detection plate 13. An air pump connected to the end of the air inlet pipe 14 is arranged in the connection box body 3. A through port communicating with the detection groove 17 and the air inlet pipe 14 is formed in the lower side wall of the detection plate 13. A piston cylinder 15 is fixed to the upper side wall of the detection plate 13. An opening communicating with the piston cylinder 15 and the detection groove 17 is formed in the upper side wall of the detection plate 13. A piston is slidably arranged in the piston cylinder 15. A piston rod 25 is fixedly connected to the upper side wall of the piston. A right-angled plate two 16 is fixedly connected to the upper side wall of the piston cylinder 15. A trigger switch located above the piston rod 25 is installed on the top wall of the end of the right-angled plate two 16. An alarm connected to the trigger switch is installed on the outer wall of the right-angled plate two 16. When performing the detection work of the weld seam, the two arc-shaped plates two 9 approach each other until the detection plate 13 contacts the weld seam on the outer wall of the factory building column 24. The air pump is started to introduce the air flow into the air inlet pipe 14. The air flow is introduced into the detection groove 17 through the air inlet pipe 14. The air flow in the detection groove 17 flows out through the opening into the piston cylinder 15. As the air flow is pumped in, the piston plate and the piston rod 25 are pushed upward. The piston rod 25 contacts and presses the trigger switch, turning on the alarm to emit an alarm. By emitting the alarm, it is determined that all the air flow enters the piston cylinder 15 to push the piston rod 25 upward. When there are problems such as incomplete penetration and missed welding in the weld seam, the air flow will flow out from the weld seam, that is, the air flow rate decreases within a certain time and cannot push the piston rod 25 up to press the trigger switch. Therefore, whether there are problems such as missed welding and incomplete welding in the weld seam is determined by whether the alarm sounds; The detection plate 13 is composed of a mild steel plate at the rear side and a silica gel plate fixed on the outer wall of the mild steel plate. The detection groove 17 is opened on the silica gel plate. A fitting mechanism is arranged on the arc-shaped plate II 9. The fitting mechanism includes a through hole 21 opened on the arc-shaped plate II 9. Two rotating shafts are installed in the through hole 21. An extrusion fitting plate 22 is fixedly connected to the outer wall of the rotating shaft. An electric telescopic rod is fixed in the connecting cylinder 10. Gear rings are fixedly sleeved on the outer walls of the two rotating shafts. The driving end of the electric telescopic rod is fixedly connected with a rack 23 whose end is located between the two gear rings. Sawteeth meshing with the gear rings are arranged on the outer walls of both sides of the end of the rack 23. To ensure the tight fit between the detection plate 13 and the outer wall of the factory building column 24, after the detection plate 13 contacts the outer wall of the factory building column 24, the driving end of the electric telescopic rod retracts, pulling the rack 23 to move towards the electric telescopic rod side. The two rotating shafts are driven to rotate through the meshing of the sawteeth and the gear rings. The ends of the two extrusion fitting plates 22 rotate from the outside to the inside. The ends of the extrusion fitting plates 22 rotate to contact the outer wall of the end of the detection plate 13, pushing the end of the detection plate 13 to further press against the outer wall of the factory building column 24, ensuring the sealing effect at the contact. At the same time, the detection plate 13 is designed with a mild steel plate on the outside and a silica gel plate on the inside, enabling the detection plate 13 to be applicable to factory building columns 24 of different diameters. When a factory building column 24 with a large diameter contacts the detection plate 13, the two ends of the detection plate 13 are pushed to deform outwards. When a factory building column 24 with a small diameter contacts the detection plate 13, the two ends of the detection plate 13 cannot fully contact or cannot contact the outer wall of the factory building column 24. At this time, the detection plate 13 is deformed by the extrusion fitting plate 22 to enable it to fully press against the outer wall of the factory building column 24, increasing the applicability of the detection; After the detection plate 13 detects the weld at a certain position of the factory building column 24, the electric telescopic rod pushes the rack 23 to extend. At this time, the two extrusion fitting plates 22 move away from each other, making the detection plate 13 no longer press tightly against the outer wall of the factory building column 24. The electric roller 20 is started, and the arc-shaped plate II 9 rotates along the outer wall of the factory building column 24. The base 1 rotates on the ground through the universal wheels. After rotating a certain angle, the above actions are repeated to perform the weld detection work at the next position.

[0019] An optical detection mechanism is arranged on the outer wall of the connection box body 3. The optical detection mechanism includes a support arm 6 fixedly connected to the outer wall of the connection box body 3. An arc-shaped plate I 7 located below the detection mechanism is fixedly connected to the end of the support arm 6. An ultrasonic detection probe 5, a radiation source, and a detector connected to the radiation source are installed on the surface of the arc-shaped plate I 7. Through the principle that high-frequency sound waves emitted by the ultrasonic detection probe 5 propagate in metals, ultrasonic detection can effectively detect defects inside the weld, such as cracks, pores, incomplete penetration, etc. The radiation penetrates the weld, and the detector receives the image formed after the radiation passes through the material to analyze the internal quality of the weld. When the arc-shaped plate II 9 rotates along the outer wall of the factory building column 24, the ultrasonic detection probe 5 and the radiation source can complete the weld detection work for one circle.

Claims

1. A steel structure factory weld detection device, comprising a base (1), characterized in that : The upper side wall of the base (1) is fixedly connected to a vertically arranged multi-stage telescopic arm (2), the end of the multi-stage telescopic arm (2) is fixedly connected to a connecting box (3), two connecting arms (4) are symmetrically fixedly connected to the outer walls on both sides of the connecting box (3), the end of the connecting arm (4) is fixedly connected to a telescopic cylinder (8), and the end of the telescopic cylinder (8) is fixed to a gas detection mechanism; An optical detection mechanism is provided on the outer wall of the connection box (3), and the optical detection mechanism comprises a support arm (6) fixedly connected to the outer wall of the connection box (3), an end of the support arm (6) being fixedly connected to an arc-shaped plate (7) located below the detection mechanism, and an ultrasonic detection probe (5), a radiation source, and a detector connected to the radiation source are mounted on the surface of the arc-shaped plate (7).

2. A steel structure factory weld detection device according to claim 1, characterized in that: The gas detection mechanism comprises a connecting tube (10) fixed to the end of the telescopic cylinder (8); the end of the connecting tube (10) is fixedly connected to an arc plate 2 (9); the upper side wall of the arc plate 2 (9) is fixedly connected to a right angle plate 1 (11); the end of the right angle plate 1 (11) is fixedly connected to a fixing rod (12); the end of the fixing rod (12) is fixedly connected to a detection plate (13); the outer wall of the detection plate (13) is provided with a detection groove (17); the lower side wall of the detection plate (13) is connected to an air inlet pipe (14); the lower side wall of the detection plate (13) is provided with a gas inlet pipe (14) connected to the detection groove (17) and the inlet pipe (14). The detection plate (13) has a piston cylinder (15) fixed on the upper side wall thereof, and an opening communicating with the piston cylinder (15) and the detection groove (17) is formed on the upper side wall thereof. A piston is slidably arranged in the piston cylinder (15), and a piston rod (25) is fixedly connected to the upper side wall of the piston. A right-angle plate (16) is fixedly connected to the upper side wall of the piston cylinder (15). A trigger switch located on the upper side of the piston rod (25) is installed on the top wall of the end of the right-angle plate (16), and an alarm connected to the trigger switch is installed on the outer wall of the right-angle plate (16).

3. A steel structure factory weld detection device according to claim 2, characterized in that: The outer wall of the second arc plate (9) away from the connecting tube (10) is provided with two mounting openings symmetrically arranged along the midline, a self-resetting rotating shaft (18) is mounted in the mounting opening, a connecting plate (19) is fixedly connected to the outer wall of the self-resetting rotating shaft (18), and an electric roller (20) is mounted on the end of the connecting plate (19).

4. A steel structure factory weld detection device according to claim 3, characterized in that: The self-resetting rotating shaft comprises a rotating shaft body and a torsion spring sleeved on the outer wall of the rotating shaft body.

5. A steel structure factory weld detection device according to claim 4, characterized in that: The detection plate (13) comprises a soft steel plate at the rear side and a silicone plate fixed on the outer wall of the soft steel plate, the detection groove (17) is provided on the silicone plate, the arc plate (9) is provided with a fitting mechanism, the fitting mechanism comprises a through hole (21) provided on the arc plate (9), two rotating shafts are installed in the through hole (21), the outer wall of the rotating shaft is fixedly connected with an extrusion fitting plate (22), an electric telescopic rod is fixed in the connecting tube (10), the outer walls of the two rotating shafts are fixedly sleeved with gear rings, the driving end of the electric telescopic rod is fixedly connected with a toothed plate (23) whose end is located between the two gear rings, and the outer walls of the toothed plate (23) on both sides are provided with saw teeth meshing with the gear ring.

6. A steel structure factory building weld detection device according to claim 1, characterized in that: A plurality of universal wheels are mounted on the lower side wall of the base (1).

7. A steel structure factory building weld detection device according to claim 1, characterized in that: An air pump connected to the end of the air inlet pipe (14) is arranged in the connection box (3).

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