Equipment for detecting corrosion resistance of surface coating of building steel structure

Abstract

The invention relates to the technical field of corrosion resistance detection, and discloses building steel structure surface coating corrosion resistance detection equipment which comprises a detection table, a roller conveyor is fixedly mounted at the top of the detection table, a lifting driving part is arranged on the rear side of the detection table, and mounting frames are arranged at the output end of the lifting driving part in an array mode; a blocking assembly is longitudinally and slidably connected to the right side of each mounting frame, a solution enclosure assembly is transversely and slidably connected to the bottom of each mounting frame, a mixing tank is fixedly mounted at the top of each solution enclosure assembly, and a solution conveying part and an air conveying part are connected to the top of each mixing tank. The four solution enclosure assemblies are located at different positions of the mounting frame respectively and used for spraying an acid solution, an alkaline solution, a salt solution and purified water respectively, the four solutions cannot be mixed, and the detection result is reliable; therefore, the purposes of respectively spraying the detection liquid and being high in detection reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of corrosion resistance detection, in particular to a device for detecting the corrosion resistance of a surface coating of a building steel structure. Background Art

[0002] During construction, a large number of steel structural components are required to support the building. To prevent corrosion and reduced strength during use, these components require corrosion-resistant treatment. Typically, a corrosion-resistant coating is applied to the surface of these components to protect them from external corrosion.

[0003] The Chinese patent with application date: 2024-11-22 and announcement number: CN119354862B discloses a metal workpiece surface coating detection device, which relates to the field of metal workpiece detection technology. It solves the problem that the existing detection device is difficult to select appropriate test methods for different products to effectively evaluate the corrosion resistance of metal coatings and chemical treatment layers, resulting in poor specific use functions, and the use of immersion testing methods undoubtedly causes waste of acidic and alkaline solutions, making it difficult to achieve efficient utilization. The detection equipment includes an equipment platform, a rotating table, a first drive assembly, a clamping assembly, a support frame, and a dripping and spraying integrated mechanism; in the present invention, according to different coatings on different metal workpieces, different replacements of four solutions can be achieved, thereby enabling the entire equipment to adaptively change the test solution according to different conditions of the coating on the metal workpiece, thereby improving the test range of the equipment, and ensuring the subsequent effective evaluation of the corrosion resistance of the metal coating and chemical treatment layer.

[0004] In this technical solution, four solutions are stored inside the dripping and spraying integrated mechanism. When dripping or spraying, they will flow out from the same channel. Some solutions are likely to remain in the second central cavity. When pure water is mixed with the other three solutions in the second central cavity, it is easy to cause the concentrations of the other three solutions to decrease. When the acidic solution and the alkaline solution are mixed in the second central cavity, they are likely to react, thereby affecting the reliability of the detection. Further improvements can be made. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In response to the shortcomings of the existing technology, the present invention provides a corrosion resistance testing device for the surface coating of building steel structures, which has the advantages of separate spraying of detection liquids and high detection reliability. It solves the problem that multiple detection liquids share one injection channel, residual liquids are easily mixed together, and the detection results are unreliable.

[0007] (2) Technical solution

[0008] In order to achieve the above-mentioned purpose of spraying the detection liquid separately and achieving high detection reliability, the present invention provides the following technical solutions: A corrosion resistance detection device for the surface coating of a building steel structure, comprising a detection platform, a roller conveyor fixedly installed on the top of the detection platform, a lifting drive component provided on the rear side of the detection platform, and a mounting frame provided in an array on the output end of the lifting drive component, each of the right sides of the mounting frame is longitudinally slidably connected to a blocking assembly, and each of the bottoms of the mounting frame is transversely slidably connected to a solution enclosure assembly, a mixing tank fixedly installed on the top of the solution enclosure assembly, and a solution conveying component and an air conveying component connected to the top of the mixing tank.

[0009] Preferably, the lifting drive component includes an arch frame, the front side of the arch frame is slidably connected to a synchronous horizontal plate, a motor is provided at the bottom center of the arch frame, the output end of the motor is connected to a threaded rod 1, and a threaded ring is fixedly installed on the rear side of the synchronous horizontal plate, and the threaded ring is threadedly connected to the threaded rod 1.

[0010] Preferably, the mounting frame includes an L-shaped fixing seat fixedly installed on the front side of the synchronous cross plate, a grooved plate is fixedly installed on the front side of the bottom end of the L-shaped fixing seat, a cover plate is fixedly installed on the top of the grooved plate, a placement frame is fixedly installed on the top of the L-shaped fixing seat, and an avoidance groove is opened through the middle of the cover plate.

[0011] Preferably, the blocking assembly includes a mounting plate fixedly mounted on the right side of the trough plate, two sliding rods are slidably connected through the mounting plate, baffles are fixedly mounted on the bottom ends of the two sliding rods, the left side of the baffle is flush with the right side of the trough plate, a spring is fixedly mounted between the baffle and the mounting plate, and an L-shaped slide is fixedly mounted on the top ends of the two sliding rods.

[0012] Preferably, the solution enclosure assembly includes an enclosure cover, a boss is fixedly installed at the center of the top of the enclosure cover, sliders are fixedly installed at the top of both ends of the enclosure cover, a straight groove is penetrated through the center of the grooved plate, two guide grooves are penetrated through the surface of the grooved plate, the boss is slidably connected in the straight groove, the slider is slidably connected in the guide groove, a threaded rod 2 is penetrated and rotatably connected on the grooved plate, the threaded rod 2 is arranged along the length direction of the grooved plate, a knob is fixedly installed on the left end of the threaded rod 2, and the boss is threadedly connected to the threaded rod 2.

[0013] Preferably, two support plates are fixedly installed on the top of the trough plate, and a V-shaped groove is opened in an array on the surface of one of the support plates; an extension plate is fixedly installed on the rear side of the boss, and an arched buckle plate is fixedly installed on the front side of the vertical part of the extension plate, and the vertical part of the extension plate passes through a sliding connection limit column, and a spring 2 is fixedly installed between the front end of the limit column and the arched buckle plate, and the rear end of the limit column is hemispherical and fits into one of the V-shaped grooves; the array spacing of the V-shaped grooves is greater than or equal to the width of the enclosure cover.

[0014] Preferably, the mixing tank is fixedly mounted at the center of the top of the boss, and an injection channel is provided at the center of the boss, and the mixing tank is connected to the enclosure cover through the injection channel; a vertical rod is slidably connected inside the injection channel, a guide groove is opened at the center of the top of the vertical rod, a spray hole is opened through the circumferential surface of the vertical rod, and the spray hole is connected with the bottom end of the guide groove, and two arc plates are fixedly mounted on the top edge of the vertical rod; the active side walls of the boss located in the injection channel are provided with limiting grooves, and the arc plates are used to seal the opening of the limiting groove; limiting plates are fixedly mounted on both sides of the active top of the vertical rod, and the limiting plates are slidably connected in the limiting grooves, and a spring three is fixedly mounted between the top of the limiting plate and the top wall of the limiting groove, a covering tube is fixedly mounted on the top wall of the enclosure cover, the vertical rod is inserted in the covering tube, a docking hole is opened through the circumferential surface of the top of the covering tube, and the injection hole is connected with the docking hole.

[0015] The cam is fixedly mounted on the left side of the L-shaped fixing seat, and the right side of the left piston cylinder is connected to the right piston cylinder. The bottom center of the left piston cylinder is connected to a connecting tube 1, and the bottom end of the connecting tube 1 is connected to the top of the mixing tank. The top center of the right piston cylinder is connected to a liquid infusion tube, and a liquid storage tank is placed on the top of the placement rack, and the top end of the liquid infusion tube is connected to the bottom of the liquid storage tank; the right piston cylinder is slidably connected to the L-shaped piston, and the L-shaped piston is in an inverted L-shape. The left piston cylinder is slidably connected to a linkage piston, and the length of the vertical part of the L-shaped piston is smaller than the length of the linkage piston, and a transverse connecting member is provided between the L-shaped piston and the linkage piston; a connecting rod is fixedly mounted on the right side of the L-shaped piston, and a circular frame is fixedly mounted on the right end of the connecting rod. The top of the L-shaped fixing seat is rotatably connected to a gear, and a push column is fixedly mounted on the front edge of the gear. The push column is slidably connected in the circular frame, and a rack plate is fixedly mounted on the left side of the L-shaped slide, and the rack plate meshes with the gear.

[0016] Preferably, the transverse connecting member includes a sleeve fixedly installed on the left side of the L-shaped piston, the sleeve is slidably connected to the center of the linkage piston, a U-shaped plate is fixedly installed on the left side of the linkage piston, a square plug is fixedly installed on the right side wall of the U-shaped plate, the square plug is inserted in the sleeve, a through hole is opened on the front side of the right end of the square plug, and a clamping column is inserted in both ends of the through hole, a spring four is fixedly installed between the opposite ends of the two clamping columns, the opposite ends of the two clamping columns are hemispherical, and the front and rear inner walls of the sleeve are provided with two hemispherical grooves distributed on the left and right.

[0017] Preferably, the air conveying member includes two air cylinders fixedly mounted on the top of the L-shaped fixing seat, the right ends of the two air cylinders are slidably connected with air delivery pistons, a fixing plate is fixedly mounted between the right ends of the two air delivery pistons, and the fixing plate is fixedly mounted to the connecting rod; the left end of the air cylinder is connected to connecting pipe 2, the two connecting pipes 2 and connecting pipe 1 are fixed together by a drag chain, the bottom end of one of the connecting pipes 2 is connected to the front side of the top of the mixing tank, and the bottom end of the other connecting pipe 2 is connected to the side of the bottom end of the mixing tank, and the left side of the top of the mixing tank is connected to a water pipe, and a flow sensor is provided on the water pipe.

[0018] (3) Beneficial effects

[0019] Compared with the existing technology, the present invention provides a device for testing the corrosion resistance of the surface coating of building steel structures, which has the following beneficial effects:

[0020] 1. The corrosion resistance testing equipment for the surface coating of building steel structures has four sets of solution enclosure assemblies located at different positions of the mounting frame. The four solution enclosure assemblies are respectively used to spray acidic solution, alkaline solution, saline solution and pure water. The four solutions will not mix, making the test results more reliable. In addition, when the steel structure workpiece passes through the four solution enclosure assemblies in sequence, the four solutions are sprayed on different positions of the steel structure workpiece, which is convenient for comparing and observing the test results. By adjusting the amount of pure water injected into the mixing tank through the water pipe, the concentrations of the acidic solution, alkaline solution and saline solution are adjusted to test the corrosion resistance of the surface coating of the building steel structure to solutions of different concentrations, thereby achieving the purpose of spraying the test liquid separately and achieving high test reliability.

[0021] 2. The corrosion resistance testing equipment for the surface coating of the building steel structure, one of the connecting pipes blows air horizontally backward from the top of the mixing tank, so that the pure water and acidic solution, alkaline solution or salt solution fly backward and mix; the other connecting pipe introduces air into the bottom end of the mixing tank to promote the flow of the solution inside the mixing tank, and further promote the mixing of the solution; thereby ensuring that the solution is mixed evenly when adjusting the concentration of the solution; and the air inside the air cylinder enters the mixing tank, so that the inside of the mixing tank is under positive pressure, which facilitates the solution inside the mixing tank to be sprayed into the inside of the enclosure cover, and at the same time, avoids residual solution inside the mixing tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of a corrosion resistance testing device for a surface coating of a building steel structure proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of a device for testing the corrosion resistance of surface coatings on building steel structures proposed by the present invention;

[0024] Figure 3This is a schematic diagram of the three-dimensional structure of the lifting drive component of the corrosion resistance performance testing equipment for the surface coating of a building steel structure proposed by the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the mounting frame and barrier assembly of a device for testing the corrosion resistance of surface coatings on building steel structures proposed by the present invention;

[0026] Figure 5 This is a structural diagram of a device for testing the corrosion resistance of a surface coating on a building steel structure proposed by the present invention, with the mounting frame and the barrier assembly separated;

[0027] Figure 6 This is a schematic diagram of the top view of the solution enclosure component of the corrosion resistance performance testing equipment for the surface coating of a building steel structure proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the solution enclosure component of the corrosion resistance performance testing equipment for the surface coating of a building steel structure proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the mixing tank of a building steel structure surface coating corrosion resistance testing equipment proposed by the present invention;

[0030] Figure 9 This is a schematic diagram of the main cross-sectional structure of a solution conveying component of a device for testing the corrosion resistance of a surface coating on a building steel structure proposed by the present invention;

[0031] Figure 10 This is a schematic diagram of the three-dimensional structure of the transverse connecting parts of the equipment for testing the corrosion resistance of the surface coating of a building steel structure proposed by the present invention;

[0032] Figure 11 This is a schematic diagram of the three-dimensional structure of the air conveying component of the corrosion resistance performance testing equipment for the surface coating of a building steel structure proposed by the present invention.

[0033] In the figure: 100, testing table; 200, roller conveyor; 300, lifting drive member; 400, mounting frame; 500, blocking assembly; 600, solution enclosure assembly; 700, mixing tank; 800, solution conveying member; 900, air conveying member;

[0034] 301, arch frame; 302, synchronous cross plate; 303, motor; 304, threaded rod 1; 305, threaded collar; 401, L-shaped fixing seat; 402, groove plate; 403, cover plate; 404, placement frame; 405, avoidance groove;

[0035] 501, mounting plate; 502, slide bar; 503, baffle; 504, spring 1; 505, L-shaped slide;

[0036] 601, enclosure cover; 602, boss; 603, slider; 604, linear groove; 605, guide groove; 606, threaded rod (2); 607, knob; 608, support plate; 609, V-shaped groove; 610, extension plate; 611, arched gusset plate; 612, limit column; 613, spring (2);

[0037] 701, vertical rod; 702, guide groove; 703, injection hole; 704, curved plate; 705, limit plate; 706, limit groove; 707, spring three; 708, covering tube; 709, docking hole;

[0038] 801, left piston cylinder; 802, right piston cylinder; 803, connecting tube 1; 804, infusion tube; 805, fluid storage tank; 806, L-shaped piston; 807, connecting rod; 808, circular frame; 809, gear; 810, push column; 811, rack plate; 812, linkage piston; 813, sleeve; 814, U-shaped plate; 815, square plug column; 816, through hole; 817, clamping column; 818, spring 4; 819, hemispherical groove;

[0039] 901. Air cylinder; 902. Air piston; 903. Fixing plate; 904. Connecting pipe 2; 905. Drag chain; 906. Water pipe; 907. Flow sensor. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 2 A device for testing the corrosion resistance of surface coatings on building steel structures includes a test platform 100. A roller conveyor 200 is fixedly installed on the top of the test platform 100. A lifting drive member 300 is provided at the rear side of the test platform 100. A mounting bracket 400 is arranged in an array on the output end of the lifting drive member 300. A blocking component 500 is longitudinally slidably connected to the right side of each mounting bracket 400. A solution enclosure component 600 is transversely slidably connected to the bottom of each mounting bracket 400. A mixing tank 700 is fixedly installed on the top of the solution enclosure component 600. A solution conveying component 800 and an air conveying component 900 are connected to the top of the mixing tank 700. The steel structure workpiece is blocked from the right side by the blocking component 500, such as Figure 2As shown, the solution enclosure assembly 600 can slide horizontally relative to the mounting frame 400, and multiple solution enclosure assemblies 600 can be adjusted to different positions at the bottom of the mounting frame 400, so that different solution enclosure assemblies 600 can be attached to different areas on the top of the steel structure workpiece.

[0042] See also Figure 3 The lifting drive 300 includes an arched frame 301, with a synchronous horizontal plate 302 slidably connected to the front side of the arched frame 301. A motor 303 is located at the bottom center of the arched frame 301, and a threaded rod 304 is connected to the output end of the motor 303. A threaded collar 305 is fixedly mounted on the rear side of the synchronous horizontal plate 302, and the threaded collar 305 is threadedly connected to the threaded rod 304. Multiple mounting brackets 400 are equidistantly fixed to the front side of the synchronous horizontal plate 302. The motor 303 drives the threaded rod 304 to rotate, driving the multiple mounting brackets 400 to rise and fall synchronously with the synchronous horizontal plate 302. Specifically, in this embodiment, there are four mounting brackets 400.

[0043] See also Figure 3 The mounting frame 400 includes an L-shaped mounting base 401 fixedly mounted on the front side of the synchronous horizontal plate 302. A trough plate 402 is fixedly mounted on the front side of the bottom end of the L-shaped mounting base 401. A cover plate 403 is fixedly mounted on the top of the trough plate 402. The L-shaped mounting base 401 and the cover plate 403 form a mounting area for the mixing tank 700 to move. A placement frame 404 is fixedly mounted on the top of the L-shaped mounting base 401. A clearance groove 405 is defined in the middle of the cover plate 403. The mixing tank 700 passes through the clearance groove 405 and moves along the clearance groove 405.

[0044] See also Figure 4-Figure 5 The blocking assembly 500 includes a mounting plate 501 fixedly mounted on the right side of the trough plate 402. Two slide bars 502 are slidably connected to the mounting plate 501. A baffle 503 is fixedly mounted at the bottom end of each slide bar 502. The left side of the baffle 503 is flush with the right side of the trough plate 402. A spring 1 504 is fixedly mounted between the baffle 503 and the mounting plate 501. L-shaped slides 505 are fixedly mounted at the top end of each slide bar 502. The elasticity of spring 1 504 causes the baffle 503 to move downward. When the mounting frame 400 moves downward, the baffle 503 is inserted into the gap of the roller conveyor 200 and abuts against the bottom wall of the lifting drive 300. Then, as the mounting frame 400 continues to move downward, the baffle 503 and the slide bar 502 move upward relative to the mounting plate 501, compressing and contracting spring 1 504.

[0045] See also Figure 6-Figure 8The solution enclosure assembly 600 includes an enclosure cover 601, and a boss 602 is fixedly installed at the center of the top of the enclosure cover 601. The cross-section of the boss 602 is in the shape of an inverted T. Sliders 603 are fixedly installed on the top of both ends of the enclosure cover 601. A linear groove 604 is opened through the center of the trough plate 402, and two guide grooves 605 are opened through the surface of the trough plate 402. The boss 602 is slidably connected in the linear groove 604, and the slider 603 is slidably connected in the guide groove 605. In this way, the enclosure cover 601 can be stably moved at the bottom of the trough plate 402. In this embodiment, the width of the enclosure cover 601 is less than or equal to one-quarter of the length of the trough plate 402. Therefore, the solution enclosure assembly 600 set at the bottom of the four sets of mounting frames 400 can be in different positions. A second threaded rod 606 is rotatably connected to the trough plate 402 and extends along the length of the trough plate 402. A knob 607 is fixedly mounted on the left end of the second threaded rod 606, and the boss 602 is threadedly connected to the second threaded rod 606. By turning the knob 607, the boss 602 is moved along the linear groove 604, adjusting the position of the enclosure cover 601 at the bottom of the trough plate 402.

[0046] Two support plates 608 are fixedly installed on the top of the trough plate 402, and the support plates 608 support the trough plate 402. A V-shaped groove 609 is arranged in an array on the surface of one of the support plates 608. An extension plate 610 is fixedly installed on the rear side of the boss 602, and an arched buckle plate 611 is fixedly installed on the front side of the vertical part of the extension plate 610. The vertical part of the extension plate 610 passes through a sliding connection limit column 612. A spring 2 613 is fixedly installed between the front end of the limit column 612 and the arched buckle plate 611. The rear end of the limit column 612 is hemispherical and fits into one of the V-shaped grooves 609; the array spacing of the V-shaped grooves 609 is greater than or equal to the width of the enclosure cover 601. Therefore, when the limit column 612 fits against the inner wall of the V-shaped groove 609, the position of the enclosure cover 601 can be simply limited. When the limiting post 612 hits the surface of the V-shaped groove 609 under the elastic action of the second spring 613, a sound is made to remind the user that the enclosure cover 601 is in the preset position (i.e., the position corresponding to the limiting post 612 and the V-shaped groove 609).

[0047] See also Figure 7-Figure 8The mixing tank 700 is fixedly mounted at the top center of the boss 602, and an injection channel is provided at the center of the boss 602. The mixing tank 700 is connected to the enclosure cover 601 through the injection channel; a vertical rod 701 is slidably connected inside the injection channel, and a guide groove 702 is provided at the top center of the vertical rod 701. A spray hole 703 is provided on the circumferential surface of the vertical rod 701, and the spray hole 703 is connected to the bottom end of the guide groove 702. Two arc plates 704 are fixedly mounted on the top edge of the vertical rod 701; the effective side walls of the boss 602 located in the injection channel are provided with limiting grooves 706, and the arc plates 704 are used to seal the opening of the limiting grooves 706; prevent the liquid inside the mixing tank 700 from entering the inside of the limiting grooves 706, and then corroding the spring three 707.

[0048] A limit plate 705 is fixedly mounted on both sides of the top of the vertical rod 701. The limit plates 705 are slidably connected within the limit slots 706. A spring 707 is fixedly mounted between the top of the limit plate 705 and the top wall of the limit slot 706. A cladding tube 708 is fixedly mounted on the top wall of the enclosure 601. The vertical rod 701 is inserted into the cladding tube 708. A docking hole 709 is formed through the circumference of the top of the cladding tube 708, and the injection hole 703 is connected to the docking hole 709. The elasticity of the spring 707 causes the vertical rod 701 to move downward, causing the injection hole 703 to be offset from the docking hole 709, and thus disconnecting the mixing tank 700 from the interior of the enclosure 601. When the enclosure 601 is attached to the surface of the steel workpiece, the vertical rod 701 is squeezed into the interior of the cladding tube 708 by the steel workpiece, connecting the docking hole 709 with the injection hole 703, thus connecting the mixing tank 700 to the enclosure 601.

[0049] See also Figure 5 and Figure 9-10 Solution delivery member 800 includes a left piston cylinder 801 fixedly mounted on top of an L-shaped mounting base 401. Right piston cylinder 802 is connected to the right side of left piston cylinder 801. Connecting tube 1 803 is connected to the center of the bottom of left piston cylinder 801. The bottom end of connecting tube 1 803 is connected to the top of mixing tank 700. A liquid infusion tube 804 is connected to the center of the top of right piston cylinder 802. A liquid storage tank 805 is placed on top of rack 404. The top end of liquid infusion tube 804 is connected to the bottom of liquid storage tank 805. The four liquid storage tanks 805 contain an acidic solution, an alkaline solution, a saline solution, and purified water, respectively. Purified water served as the control experimental group.

[0050] An L-shaped piston 806 is slidably connected within the right piston cylinder 802. L-shaped piston 806 is in an inverted L-shape. When L-shaped piston 806 moves from right to left, its horizontal portion seals the bottom of the infusion tube 804. A linkage piston 812 is slidably connected within the left piston cylinder 801. The vertical portion of L-shaped piston 806 is shorter than linkage piston 812, preventing linkage piston 812 from entering the interior of the right piston cylinder 802. A transverse connector is provided between L-shaped piston 806 and linkage piston 812. A connecting rod 807 is fixedly mounted on the right side of L-shaped piston 806. A circular frame 808 is fixedly mounted on the right end of connecting rod 807. A gear 809 is rotatably connected to the top of the L-shaped fixed seat 401. A push pin 810 is fixedly mounted on the front edge of gear 809 and slidably connected within circular frame 808. A rack plate 811 is fixedly mounted on the left side of the L-shaped slide 505 and meshes with gear 809. As the mounting frame 400 moves downward, the baffle 503 is blocked by the bottom wall of the roller conveyor 200, causing the L-shaped slide 505 to move upward relative to the L-shaped fixed base 401, and the rack plate 811 drives the gear 809 to rotate. The push pin 810 performs a circular motion. As it slides within the circular frame 808, the push pin 810 pushes the circular frame 808, the connecting rod 807, and the L-shaped piston 806 to reciprocate along the right piston cylinder 802. In this embodiment, before the L-shaped slide 505 moves relative to the L-shaped fixed base 401, the push pin 810 is located to the right of the center of the gear 809. When the enclosure cover 601 is in contact with the surface of the steel workpiece, the push pin 810 is located to the left of the center of the gear 809. In other words, during this process, the circular frame 808, the connecting rod 807, and the L-shaped piston 806 move from right to left.

[0051] The transverse connector includes a sleeve 813 fixedly mounted on the left side of the L-shaped piston 806. Sleeve 813 extends through and slidably connects to the center of the linkage piston 812. A U-shaped plate 814 is fixedly mounted on the left side of the linkage piston 812. A square post 815 is fixedly mounted on the right side of the U-shaped plate 814. The square post 815 is inserted into sleeve 813. The square post 815 has a rectangular cross-section and fits into the inner wall of sleeve 813. A through-hole 816 is formed on the front right end of the square post 815. A retaining post 817 is inserted into each end of the through-hole 816. A spring 818 is fixedly mounted between the opposing ends of the two retaining posts 817. The opposing ends of the two retaining posts 817 are both hemispherical. Two hemispherical grooves 819 are formed on the front and rear inner walls of sleeve 813. When a retaining post 817 fits within one of the hemispherical grooves 819, the movement of the L-shaped piston 806 drives the linkage piston 812 to move synchronously. When the linkage piston 812 is blocked by the left piston cylinder 801 and the L-shaped piston 806 continues to move, the sleeve 813 moves relative to the square plug post 815 until the clamping post 817 fits into the other hemispherical groove 819 .

[0052] See also Figure 11 The air conveying member 900 includes two air cylinders 901 fixedly installed on the top of the L-shaped fixing seat 401. The right ends of the two air cylinders 901 are slidably connected to the air delivery pistons 902. A fixing plate 903 is fixedly installed between the right ends of the two air delivery pistons 902. The fixing plate 903 is fixedly installed with the connecting rod 807, so that when the connecting rod 807 moves, the two air delivery pistons 902 are driven to move synchronously.

[0053] The left end of the gas cylinder 901 is connected to a connecting pipe 2 904. The two connecting pipes 2 904 and the connecting pipe 1 803 are fixed together by a drag chain 905. The bottom end of one connecting pipe 2 904 is connected to the front side of the top of the mixing tank 700, and the bottom end of the other connecting pipe 2 904 is connected to the side of the bottom end of the mixing tank 700, and is arranged along the tangential direction of the bottom of the mixing tank 700. A water pipe 906 is connected to the left side of the top of the mixing tank 700, and a flow sensor 907 is provided on the water pipe 906. The water pipe 906 is used to inject pure water into the interior of the mixing tank 700, and the flow sensor 907 monitors the amount of pure water passing through the water pipe 906. By adjusting the amount of pure water injected into the interior of the mixing tank 700, the concentration of the solution inside the mixing tank 700 is controlled.

[0054] Through one of the infusion tubes 804, air is blown horizontally backward at the top of the mixing tank 700. When the connecting tube 1 803 injects an acidic solution, alkaline solution, or salt solution into the mixing tank 700, it will be scattered backward under the action of the airflow. The water pipe 906 injects pure water horizontally to the right at the top of the mixing tank 700. The pure water is also scattered backward under the action of the airflow, thereby promoting the mixing of the pure water with the acidic solution, alkaline solution, or salt solution and adjusting the concentration of the solution. The solution accumulates in the lower half of the mixing tank 700, and air is introduced into the solution through another connecting tube 2 904 to promote the flow of the solution inside the mixing tank 700, further promoting the mixing effect of the acidic solution, alkaline solution, or salt solution and the pure water. Air is also introduced into the mixing tank 700 through the two connecting tubes 2 904, so that the interior of the mixing tank 700 is in a positive pressure state. When the injection hole 703 is aligned with the docking hole 709, the solution can be sprayed into the enclosure cover 601 under the action of air pressure and flow to the surface of the steel structure workpiece. And residual solution in the mixing tank 700 can be avoided.

[0055] When in use, the steel structure workpieces to be inspected are placed on top of the roller conveyor 200 in sequence, and the steel structure workpieces are conveyed to the right by the roller conveyor 200;

[0056] The motor 303 drives the threaded rod 1 304 to rotate, driving the synchronous cross plate 302 to move downward, and the mounting frame 400 moves downward synchronously with the synchronous cross plate 302. The baffle 503 is inserted into the gap of the roller conveyor 200 and abuts against the bottom wall of the roller conveyor 200, so that the steel structure workpiece to be inspected stays on the left side of the baffle 503. Then the mounting frame 400 continues to move downward, causing the L-shaped slide 505 to move upward relative to the L-shaped fixed seat 401, and the meshing action of the rack plate 811 and the gear 809 drives the gear 809 to rotate, and the push column 810 performs a circular motion. While the push column 810 slides inside the circular frame 808, it drives the circular frame 808, the connecting rod 807 and the L-shaped piston 806 to move to the right;

[0057] At this time, since the clamping column 817 is attached to the hemispherical groove 819, the linkage piston 812 and the L-shaped piston 806 move synchronously, so that the solution between the L-shaped piston 806 and the linkage piston 812 moves synchronously to the left. When the linkage piston 812 moves to the left side of the top end of the connecting tube 803, the solution can pass through the connecting tube 803 and enter the interior of the mixing tank 700.

[0058] After the linkage piston 812 is attached to the left side wall of the left piston cylinder 801, the L-shaped piston 806 continues to move to the left, squeezing the solution between the linkage piston 812 and the L-shaped piston 806 into the interior of the connecting pipe 803, allowing the solution to enter the mixing tank 700. During this process, purified water is injected into the mixing tank 700 through the water pipe 906, and the flow sensor 907 monitors the amount of purified water injected into the mixing tank 700.

[0059] During the movement of the connecting rod 807 to the left, the connecting action of the fixing plate 903 drives the air delivery piston 902 to the left, so that the air inside the air cylinder 901 passes through the second connecting pipe 904 and enters the interior of the mixing tank 700; one of the second connecting pipes 904 blows air horizontally backward from the top of the mixing tank 700, so that the pure water and the acidic solution, alkaline solution or salt solution are scattered backward and mixed; the other second connecting pipe 904 introduces air into the bottom end of the mixing tank 700, promoting the flow of the solution inside the mixing tank 700 and further promoting the mixing of the solutions; and the air inside the air cylinder 901 enters the interior of the mixing tank 700, so that the interior of the mixing tank 700 is positively pressurized;

[0060] After the vertical rod 701 is attached to the top of the steel workpiece, the enclosure cover 601 continues to move downward, and the vertical rod 701 moves upward relative to the enclosure cover 601 until the injection hole 703 is aligned with the docking hole 709. The solution inside the mixing tank 700 is sprayed into the enclosure cover 601 under the action of air pressure and flows to the surface of the steel workpiece;

[0061] Afterwards, the mounting frame 400 is moved upward, the enclosure cover 601 is separated from the steel structure workpiece, and the baffle 503 is pulled out from the roller conveyor 200. The residual droplets in the enclosure cover 601 can flow out under the action of gravity. Before the next inspection, the inside of the enclosure cover 601 can be wiped with a paper towel to avoid residual droplets inside the enclosure cover 601.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the corrosion resistance of a surface coating of a building steel structure, comprising a testing platform (100), characterized in that: A roller conveyor (200) is fixedly mounted on the top of the detection platform (100), a lifting drive member (300) is provided on the rear side of the detection platform (100), and mounting brackets (400) are arranged in an array on the output end of the lifting drive member (300), a blocking assembly (500) is longitudinally slidably connected to the right side of each mounting bracket (400), and a solution enclosure assembly (600) is transversely slidably connected to the bottom of each mounting bracket (400), a mixing tank (700) is fixedly mounted on the top of the solution enclosure assembly (600), and a solution conveying member (800) and an air conveying member (900) are connected to the top of the mixing tank (700).

2. The corrosion resistance testing equipment for building steel structure surface coating according to claim 1 is characterized by: The lifting drive member (300) comprises an arch frame (301), the front side of the arch frame (301) is slidably connected to a synchronous horizontal plate (302), a motor (303) is provided at the bottom center of the arch frame (301), the output end of the motor (303) is connected to a threaded rod (304), and a threaded collar (305) is fixedly installed on the rear side of the synchronous horizontal plate (302), and the threaded collar (305) is threadedly connected to the threaded rod (304).

3. The corrosion resistance testing equipment for building steel structure surface coating according to claim 1 is characterized by: The mounting frame (400) comprises an L-shaped fixing seat (401) fixedly mounted on the front side of the synchronous horizontal plate (302), a grooved plate (402) fixedly mounted on the front side of the bottom end of the L-shaped fixing seat (401), a cover plate (403) fixedly mounted on the top of the grooved plate (402), a placement frame (404) fixedly mounted on the top of the L-shaped fixing seat (401), and an avoidance groove (405) running through the middle of the cover plate (403).

4. The corrosion resistance testing equipment for building steel structure surface coating according to claim 3 is characterized by: The blocking assembly (500) includes a mounting plate (501) fixedly mounted on the right side of the groove plate (402), two slide bars (502) are slidably connected through the mounting plate (501), a baffle (503) is fixedly mounted on the bottom ends of the two slide bars (502), the left side of the baffle (503) is flush with the right side of the groove plate (402), a spring (504) is fixedly mounted between the baffle (503) and the mounting plate (501), and an L-shaped slide seat (505) is fixedly mounted on the top ends of the two slide bars (502).

5. The corrosion resistance testing equipment for building steel structure surface coating according to claim 4 is characterized by: The solution enclosure assembly (600) includes an enclosure cover (601), a boss (602) is fixedly installed at the center of the top of the enclosure cover (601), and sliders (603) are fixedly installed on the tops of both ends of the enclosure cover (601). A straight groove (604) is opened through the center of the groove plate (402), and two guide grooves (605) are opened through the surface of the groove plate (402). The boss (602) is slidably connected in the straight groove (604), and the slider (603) is slidably connected in the guide groove (605). A threaded rod 2 (606) is rotatably connected to the groove plate (402), and the threaded rod 2 (606) is arranged along the length direction of the groove plate (402). A knob (607) is fixedly installed on the left end of the threaded rod 2 (606), and the boss (602) is threadedly connected to the threaded rod 2 (606).

6. The corrosion resistance testing equipment for building steel structure surface coating according to claim 5 is characterized by: Two support plates (608) are fixedly mounted on the top of the grooved plate (402), wherein a V-shaped groove (609) is formed on the surface of one of the support plates (608); An extension plate (610) is fixedly mounted on the rear side of the boss (602), an arched gusset plate (611) is fixedly mounted on the front side of the vertical portion of the extension plate (610), the vertical portion of the extension plate (610) passes through a sliding connection limit column (612), a second spring (613) is fixedly mounted between the front end of the limit column (612) and the arched gusset plate (611), and the rear end of the limit column (612) is hemispherical and fits into one of the V-shaped grooves (609); The array spacing of the V-shaped grooves (609) is greater than or equal to the width of the enclosure cover (601).

7. The corrosion resistance testing equipment for building steel structure surface coating according to claim 5 is characterized by: The mixing tank (700) is fixedly mounted at the top center of the boss (602), an injection channel is provided at the center of the boss (602), and the mixing tank (700) is communicated with the enclosure cover (601) through the injection channel; A vertical rod (701) is slidably connected to the inside of the injection channel, a guide groove (702) is provided at the center of the top of the vertical rod (701), and an injection hole (703) is provided through the circumferential surface of the vertical rod (701), the injection hole (703) is communicated with the bottom end of the guide groove (702), and two arc-shaped plates (704) are fixedly installed on the top edge of the vertical rod (701); The boss (602) is provided with a limiting groove (706) on the active side wall of the injection channel, and the arc-shaped plate (704) is used to seal the opening of the limiting groove (706); Limiting plates (705) are fixedly installed on both sides of the top of the vertical rod (701), and the limiting plates (705) are slidably connected in the limiting groove (706). A spring three (707) is fixedly installed between the top of the limiting plate (705) and the top wall of the limiting groove (706). A covering tube (708) is fixedly installed on the top wall of the enclosure cover (601). The vertical rod (701) is inserted into the covering tube (708), and a docking hole (709) is opened on the top circumferential surface of the covering tube (708), and the injection hole (703) is connected to the docking hole (709).

8. The corrosion resistance testing equipment for building steel structure surface coating according to claim 7 is characterized by: The solution transporting member (800) includes a left piston cylinder (801) fixedly mounted on the top of an L-shaped fixing seat (401), the right side of the left piston cylinder (801) is connected to a right piston cylinder (802), the bottom center of the left piston cylinder (801) is connected to a connecting pipe (803), the bottom end of the connecting pipe (803) is connected to the top of the mixing tank (700), the top center of the right piston cylinder (802) is connected to a liquid infusion pipe (804), a liquid storage tank (805) is placed on the top of the placement rack (404), and the top end of the liquid infusion pipe (804) is connected to the bottom of the liquid storage tank (805); An L-shaped piston (806) is slidably connected inside the right piston cylinder (802), and the L-shaped piston (806) is in an inverted L shape. A linkage piston (812) is slidably connected inside the left piston cylinder (801), and the length of the vertical portion of the L-shaped piston (806) is shorter than the length of the linkage piston (812). A transverse connecting piece is provided between the L-shaped piston (806) and the linkage piston (812); A connecting rod (807) is fixedly installed on the right side of the L-shaped piston (806), and a circular frame (808) is fixedly installed on the right end of the connecting rod (807). A gear (809) is rotatably connected to the top of the L-shaped fixed seat (401), and a push column (810) is fixedly installed on the front edge of the gear (809). The push column (810) is slidably connected in the circular frame (808). A rack plate (811) is fixedly installed on the left side of the L-shaped sliding seat (505), and the rack plate (811) is engaged with the gear (809).

9. The corrosion resistance testing equipment for building steel structure surface coating according to claim 8, characterized in that: The transverse connecting member includes a sleeve (813) fixedly mounted on the left side of the L-shaped piston (806), the sleeve (813) is slidably connected to the center of the linkage piston (812), a U-shaped plate (814) is fixedly mounted on the left side of the linkage piston (812), a square plug (815) is fixedly mounted on the right side wall of the U-shaped plate (814), the square plug (815) is inserted into the sleeve (813), a through hole (816) is opened through the front side of the right end of the square plug (815), and a clamping column (817) is inserted into both ends of the through hole (816), a spring four (818) is fixedly mounted between the opposite ends of the two clamping columns (817), and the opposite ends of the two clamping columns (817) are both hemispherical, and the front and rear inner walls of the sleeve (813) are both provided with two hemispherical grooves (819) distributed on the left and right.

10. The corrosion resistance testing equipment for building steel structure surface coating according to claim 8, characterized in that: The air conveying member (900) comprises two air cylinders (901) fixedly mounted on the top of the L-shaped fixing seat (401), the right ends of the two air cylinders (901) are slidably connected to air delivery pistons (902), a fixing plate (903) is fixedly mounted between the right ends of the two air delivery pistons (902), and the fixing plate (903) is fixedly mounted to the connecting rod (807); The left end of the air cylinder (901) is connected to a connecting pipe 2 (904), and the two connecting pipes 2 (904) and the connecting pipe 1 (803) are fixed together by a drag chain (905), wherein the bottom end of one of the connecting pipes 2 (904) is connected to the front side of the top of the mixing tank (700), and the bottom end of the other connecting pipe 2 (904) is connected to the side of the bottom end of the mixing tank (700), and the left side of the top of the mixing tank (700) is connected to a water pipe (906), and a flow sensor (907) is provided on the water pipe (906).

Images