A detection device for anti-corrosion coating layer of steel structure

Abstract

The present invention belongs to the technical field of detection devices, and particularly relates to a detection device for an anti-corrosion coating layer on a steel structure, comprising a positioning component, a detection component and a recovery component; one end of the positioning component is clamped with a steel structure, the detection component is slidably connected to the center of the central axis of the positioning component, and one side of the detection component is movably fitted with the steel structure, one end of the recovery component is slidably connected to the bottom of the positioning component, and the recovery component is slidably connected to the bottom of the positioning component to make the recovery component fit the anti-corrosion material layer after spraying the steel structure, and the recovery component is used to collect excess anti-corrosion material on the side wall of the steel structure, and in the process of transferring the excess anti-corrosion material to the coating storage tank, the anti-corrosion material in the flow process is detected, and the content of harmful substances in the anti-corrosion material is analyzed to see whether it is qualified, so as to meet the convenience of testing the vertical steel structure after spraying the anti-corrosion coating layer.

Description

Technical Field

[0001] The invention belongs to the technical field of detection devices, and in particular relates to a detection device for an anti-corrosion coating layer of a steel structure. Background Art

[0002] Steel structures are mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates. During the construction process, in order to extend the service life of the steel structure, it is necessary to spray an anti-corrosion coating layer on the surface of the steel structure.

[0003] After searching, in the prior art, Chinese patent publication number CN214097097U, authorization announcement date: 2021-08-31, discloses a new type of water resistance detection device for building coating layer, which includes: a detection box; a plurality of spacer bars arranged on the side wall of the detection box; and a box cover arranged on the top of the detection box, wherein an adjustment component for adjusting the distance between the spacer bars is arranged in the detection box. The detection device involved in this application has the characteristic of being able to detect the water resistance of three groups of sample paint films at the same time, thereby effectively improving the efficiency of water resistance detection.

[0004] However, the equipment still has the following defects: although it can simultaneously detect the water resistance characteristics of three groups of sample paint films, thereby effectively improving the efficiency of water resistance detection, its structure is relatively complicated, and its convenience and construction efficiency are generally low. It cannot be applied to the detection of vertical steel structures in building construction after spraying the anti-corrosion paint layer. Therefore, in order to meet the convenience of testing the vertical steel structure after spraying the anti-corrosion paint layer, a detection device with diverse functions and a wider range of uses is needed. Summary of the invention

[0005] In response to the above problems, the present invention provides a detection device for an anti-corrosion coating layer on a steel structure, comprising a positioning component, a detection component and a recovery component; one end of the positioning component is clamped with a steel structure, the detection component is slidably connected at the center of the central axis of the positioning component, and one side of the detection component is movably fitted with the steel structure, one end of the recovery component is slidably connected to the bottom of the positioning component, and the other end of the recovery component is embedded in the positioning component, a paint storage tank is installed on the outer wall of the recovery component and on one side close to the positioning component, and the recovery component is also movably fitted with the steel structure.

[0006] Furthermore, the positioning assembly includes a first positioning plate and a second positioning plate; the first positioning plate and the second positioning plate are both fan-ring structures, the outer wall of the first positioning plate is provided with a first sliding cavity, the outer wall of the second positioning plate is provided with a second sliding cavity, and one end of the first positioning plate and the second positioning plate are rotatably connected with an axle pin.

[0007] Furthermore, the top of the axle pin is fixedly connected with an upper limit plate, and the lower part of the axle pin is fixedly connected with a lower limit plate. An adjustment hole is provided on the outer wall of the upper limit plate and on one side close to the axle pin, and the inner wall of the adjustment hole is slidably connected to the detection component.

[0008] Furthermore, the inner walls of the first positioning plate and the second positioning plate are fixedly connected with hinge seats, and the two groups of hinge seats are symmetrically arranged with the central axis of the axle pin as the center, one group of hinge seats is rotatably connected with an internal threaded tube, and the other group of hinge seats is rotatably connected with a first screw rod, the first screw rod is threadedly connected in the internal threaded tube, and the outer wall of the internal threaded tube and the side close to the first screw rod is fixedly connected with a first hand wheel.

[0009] Furthermore, the detection component includes an adjustment block and a controller housing; the bottom of the adjustment block is fixedly connected to a limit block, and the outer wall of the adjustment block is provided with scale marks, the adjustment block is slidably fitted on the inner wall of the adjustment hole, and the limit block is abutted and connected to the bottom of the adjustment hole.

[0010] Furthermore, the bottom of the limit block is rotatably connected to a second screw rod, and the second screw rod is threadedly connected to the lower limit plate, the bottom end of the second screw rod is fixedly connected to a second hand wheel, the top of the adjustment block is rotatably connected to an adjustment arm, and an air pump is embedded in the inner wall of the adjustment arm.

[0011] Furthermore, the other end of the adjusting arm is rotatably connected to an air collecting pipe, and mounting plates are provided on both sides of the ends of the air collecting pipe. A third screw rod passes through the center of the central axis of the mounting plate and the ends of the adjusting arm and the air collecting pipe, and both ends of the third screw rod are threadedly connected to hexagonal nuts, and the hexagonal nuts are abuttingly connected to the mounting plate. A plurality of through holes are provided on the outer wall of the air collecting pipe, and a hose is connected between the air collecting pipe and the output end of the air pump.

[0012] Furthermore, one end of the air collecting pipe is fixedly connected to a wet film wheel bracket, and a wet film wheel is clamped in the wet film wheel bracket, the wet film wheel is movably fitted and connected to the outer wall of the steel structure, test pens are clamped on the two groups of assembly plates, a dry film thickness gauge is provided on the inner wall of the controller housing, and the dry film thickness gauge and the test pen are electrically connected through a wire.

[0013] Furthermore, the recovery component includes two groups of rollers and a detection tube; both ends of the two groups of rollers are fixedly connected with anti-slip plates, one group of rollers is slidably connected to the inner wall of the first sliding cavity, and the other group of rollers is slidably connected to the inner wall of the second sliding cavity, the bottom of one group of anti-slip plates is rotatably connected to a positioning rod, and the bottom of the other group of anti-slip plates is rotatably connected to a positioning sleeve, the positioning sleeve is movably sleeved on the outside of the positioning rod, and a storage bucket is clamped on the outer wall of the positioning sleeve and on one side close to the positioning rod, the storage bucket is fit-connected to the outer wall of the steel structure, and the storage bucket is vertically arranged at the bottom of the wet film wheel.

[0014] Furthermore, one end of the detection tube is sleeved with a drainage tube, and one end of the drainage tube is communicated with the storage bucket, the other end of the detection tube is sleeved with a recovery tube, and one end of the recovery tube is communicated with the controller housing, a suction pump is also provided in the controller housing, one end of the suction pump is communicated with the recovery tube, and the other end of the suction pump is threadedly connected to the paint storage tank, and a formaldehyde concentration detector and a toluene concentration excessive detector are embedded in the bottom of the detection tube.

[0015] The beneficial effects of the present invention are:

[0016] 1. After the positioning component is clamped with the steel structure, the detection component is used to contact the anti-corrosion material layer just sprayed on the steel structure to measure the wet film thickness of the steel structure, and the recovery component is slidably connected to the bottom of the positioning component to make the recovery component fit the anti-corrosion material layer after spraying on the steel structure. The recovery component is used to collect the excess anti-corrosion material on the side wall of the steel structure, and in the process of transferring the excess anti-corrosion material to the paint storage tank, the anti-corrosion material in the flow process is detected to analyze whether the content of harmful substances in the anti-corrosion material is qualified, so as to meet the convenience of testing after the vertical steel structure is sprayed with the anti-corrosion paint layer.

[0017] 2. Slide the adjusting block downward in the adjusting hole and use the scale marks on the outer wall of the adjusting block to observe the falling distance of the adjusting block. The adjusting block drives the wet film wheel to fit the wet film on the surface of the steel structure. The wet film wheel is placed on the wet film so that its minimum reading is at the top, and the maximum gap between the eccentric wheel and the paint film is just above the wet film. Let the thickness gauge roll half a circle on the paint film in the direction of the minimum scale of the thickness gauge, and repeat the rolling half a circle in the opposite direction. Read the readings of the first contact point between the wet film and the eccentric wheel when rolling in both directions. The average value is the test result. Changing the thickness measurement method of the wet film wheel on the wet film is suitable for various tests of the vertical steel structure after painting.

[0018] 3. After loosening the hexagonal nuts at both ends of the third screw rod, the contact angle between the wet film wheel and the steel structure, as well as the angle between several groups of through holes on the outer wall of the air collecting pipe and the steel structure can be adjusted. When the air pump continues to work, gas is injected into the air collecting pipe through a hose, and the gas is discharged through several groups of through holes and blown on the surface of the steel structure for rapid air drying of the wet film, thereby shortening the waiting time for the dry film thickness test of the vertical steel structure.

[0019] 4. After the storage bucket is attached to the surface of the steel structure, the excess anti-corrosion material falling from the wet film of the steel structure can be collected and stored at the port of the drainage tube. During the continuous operation of the suction pump, the anti-corrosion material at the port of the drainage tube passes through the detection tube in sequence. The formaldehyde concentration detector and the toluene concentration excess detector are used in combination to detect the formaldehyde concentration and toluene concentration of the anti-corrosion material, and analyze the content of harmful substances in the anti-corrosion material in the wet film state. The excess anti-corrosion material is then stored in the paint storage tank after passing through the recovery pipe to prevent the paint surface of the vertical steel structure in the wet film state from dripping, and accurate detection of harmful substances can be performed during the recovery of the wet film paint.

[0020] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram showing the structure of a detection device for an anti-corrosion coating layer on a steel structure according to an embodiment of the present invention is shown;

[0023] Figure 2 A schematic diagram of the structure of a positioning assembly according to an embodiment of the present invention is shown;

[0024] Figure 3 A schematic diagram of the structure of a detection component according to an embodiment of the present invention is shown;

[0025] Figure 4 A schematic structural diagram of a recycling component according to an embodiment of the present invention is shown.

[0026] In the figure: 1, positioning assembly; 11, first positioning plate; 12, first sliding cavity; 13, second positioning plate; 14, second sliding cavity; 15, shaft pin; 16, upper limit plate; 17, lower limit plate; 18, adjustment hole; 19, hinge seat; 110, internal thread cylinder; 111, first screw rod; 112, first hand wheel; 2, detection assembly; 21, adjustment block; 22, limit block; 23, second screw rod; 24, second hand wheel; 25, adjustment arm; 26, air pump; 27 , air collecting duct; 28, assembly plate; 29, third screw; 210, wet film wheel bracket; 211, wet film wheel; 212, test pen; 213, controller housing; 3, recovery component; 31, roller; 32, anti-slip plate; 33, positioning rod; 34, positioning sleeve; 35, storage bucket; 36, drainage pipe; 37, detection tube; 38, recovery tube; 39, formaldehyde concentration detector; 310, toluene concentration excessive detector; 4, steel structure; 5, paint storage tank. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0028] The embodiment of the present invention provides a detection device for an anti-corrosion coating layer of a steel structure, comprising a positioning component 1, a detection component 2 and a recovery component 3; illustratively, Figure 1 shown.

[0029] One end of the positioning component 1 is clamped with a steel structure 4, the detection component 2 is slidably connected to the center of the central axis of the positioning component 1, and one side of the detection component 2 is movably fitted with the steel structure 4, one end of the recovery component 3 is slidably connected to the bottom of the positioning component 1, and the other end of the recovery component 3 is embedded and installed in the positioning component 1, and a paint storage tank 5 is installed on the outer wall of the recovery component 3 and on one side close to the positioning component 1, and the recovery component 3 is also movably fitted with the steel structure 4.

[0030] Specifically, after the positioning component 1 is clamped with the steel structure 4, the detection component 2 is used to contact the anti-corrosion material layer just sprayed on the steel structure 4, so as to measure the wet film thickness of the steel structure 4, and the recovery component 3 is slidably connected to the bottom of the positioning component 1, so that the recovery component 3 is attached to the anti-corrosion material layer after spraying on the steel structure 4, and the recovery component 3 is used to collect the excess anti-corrosion material on the side wall of the steel structure 4, and in the process of transferring the excess anti-corrosion material to the paint storage tank 5, the anti-corrosion material in the flow process is detected to analyze whether the content of harmful substances in the anti-corrosion material is qualified.

[0031] The positioning assembly 1 includes a first positioning plate 11 and a second positioning plate 13; illustratively, Figure 2 shown.

[0032] The first positioning plate 11 and the second positioning plate 13 are both fan-shaped structures. The outer wall of the first positioning plate 11 is provided with a first sliding cavity 12, and the outer wall of the second positioning plate 13 is provided with a second sliding cavity 14. One end of the first positioning plate 11 and the second positioning plate 13 is rotatably connected with an axle pin 15, and the top of the axle pin 15 is fixedly connected with an upper limit plate 16, and the lower part of the axle pin 15 is fixedly connected with a lower limit plate 17. The outer wall of the upper limit plate 16 and the side close to the axle pin 15 are provided with an adjustment hole 18, and the inner wall of the adjustment hole 18 is provided with a lower limit plate 17. The wall is slidably connected to the detection component 2, and the inner walls of the first positioning plate 11 and the second positioning plate 13 are fixedly connected with a hinge seat 19, and the two groups of hinge seats 19 are symmetrically arranged with the central axis of the axle pin 15 as the center. One group of hinge seats 19 is rotatably connected with an internal threaded tube 110, and the other group of hinge seats 19 is rotatably connected with a first screw rod 111, and the first screw rod 111 is threadedly connected in the internal threaded tube 110, and the outer wall of the internal threaded tube 110 and the side close to the first screw rod 111 are fixedly connected with a first hand wheel 112.

[0033] Specifically, the first positioning plate 11 and the second positioning plate 13 rotate around the shaft pin 15, so that one end of the first positioning plate 11 and the second positioning plate 13 form different opening and closing angles for clamping steel structures 4 of different sizes, and then the first hand wheel 112 is rotated to rotate the internal threaded tube 110 to one side, while the first screw rod 111 is threadedly fastened to different positions in the internal threaded tube 110, which is used to position and lock the first positioning plate 11 and the second positioning plate 13 with different opening and closing angles after clamping the steel structure 4.

[0034] The detection assembly 2 includes an adjustment block 21 and a controller housing 213; illustratively, Figure 3 shown.

[0035] The bottom of the adjusting block 21 is fixedly connected to the limiting block 22, and the outer wall of the adjusting block 21 is provided with scale marks, the adjusting block 21 is slidably fitted and connected to the inner wall of the adjusting hole 18, and the limiting block 22 is abutted and connected to the bottom of the adjusting hole 18, the bottom of the limiting block 22 is rotatably connected to the second screw rod 23, and the second screw rod 23 is threadedly connected to the lower limiting plate 17, the bottom end of the second screw rod 23 is fixedly connected to the second hand wheel 24, the top of the adjusting block 21 is rotatably connected to the adjusting arm 25, and the inner wall of the adjusting arm 25 is embedded with an air pump 26, the other end of the adjusting arm 25 is rotatably connected to the air collecting pipe 27, and both sides of the end of the air collecting pipe 27 are provided with assembly plates 28, and the center axis of the assembly plate 28 is A third screw rod 29 is passed through the center and the ends of the adjusting arm 25 and the air collecting pipe 27, and both ends of the third screw rod 29 are threadedly connected with hexagonal nuts, and the hexagonal nuts are abuttingly connected with the assembly plate 28. The outer wall of the air collecting pipe 27 is provided with a plurality of through holes, and a hose is connected between the air collecting pipe 27 and the output end of the air pump 26. One end of the air collecting pipe 27 is fixedly connected with a wet film wheel bracket 210, and a wet film wheel 211 is clamped in the wet film wheel bracket 210, and the wet film wheel 211 is movably fitted and connected to the outer wall of the steel structure 4. Test pens 212 are clamped on the two groups of assembly plates 28, and a dry film thickness gauge is provided on the inner wall of the controller housing 213, and the dry film thickness gauge and the test pen 212 are electrically connected through a wire.

[0036] Specifically, the second hand wheel 24 rotates to drive the second screw rod 23 to be threadedly connected to the lower limit plate 17, and at the same time, the adjustment block 21 slides downward in the adjustment hole 18, and the scale mark on the outer wall of the adjustment block 21 is used to observe the falling distance of the adjustment block 21, and the adjustment block 21 drives the wet film wheel 211 to fit the wet film on the surface of the steel structure 4, and the wet film wheel 211 is placed on the wet film so that its minimum reading is at the top, and the maximum gap between the eccentric wheel and the paint film is just above the wet film, and the thickness gauge is rolled on the paint film in the direction of the minimum scale of the thickness gauge for half a circle, and the rolling is repeated in the opposite direction for half a circle, and the readings of the first contact point of the wet film with the eccentric wheel when rolling in two directions are read, and the average value is the test result;

[0037] After the hexagonal nuts at both ends of the third screw rod 29 are loosened, the contact angle between the wet film wheel 211 and the steel structure 4, as well as the angle between the several groups of through holes on the outer wall of the air collecting pipe 27 and the steel structure 4 can be adjusted, and the gas is injected into the air collecting pipe 27 through the hose during the continuous operation of the air pump 26, and the gas is discharged through the several groups of through holes and blown on the surface of the steel structure 4 for rapid air drying of the wet film;

[0038] After the test pen 212 is separated from the assembly plate 28, the end of the test pen 212 is brought into contact with the air-dried paint surface of the steel structure 4, so that the test pen 212 transmits the tested data to the dry film thickness gauge for detecting the thickness of the dry film.

[0039] The recovery assembly 3 includes two sets of rollers 31 and a detection tube 37; illustratively, as Figure 4 shown.

[0040] Both ends of the two groups of roller shafts 31 are fixedly connected with anti-slip plates 32, one group of roller shafts 31 is slidably connected to the inner wall of the first sliding cavity 12, and the other group of roller shafts 31 is slidably connected to the inner wall of the second sliding cavity 14, the bottom of one group of anti-slip plates 32 is rotatably connected to a positioning rod 33, and the bottom of the other group of anti-slip plates 32 is rotatably connected to a positioning sleeve 34, the positioning sleeve 34 is movably sleeved on the outside of the positioning rod 33, and a storage bucket 35 is clamped on the outer wall of the positioning sleeve 34 and close to the side of the positioning rod 33, the storage bucket 35 is fitted and connected to the outer wall of the steel structure 4, and the storage bucket 33 5 is vertically arranged at the bottom of the wet film wheel 211, one end of the detection tube 37 is sleeved with the drainage tube 36, and one end of the drainage tube 36 is communicated with the storage bucket 35, the other end of the detection tube 37 is sleeved with the recovery tube 38, and one end of the recovery tube 38 is communicated with the controller housing 213, and a suction pump is also arranged in the controller housing 213, one end of the suction pump is communicated with the recovery tube 38, and the other end of the suction pump is threadedly connected with the paint storage tank 5, and the bottom of the detection tube 37 is embedded with a formaldehyde concentration detector 39 and a toluene concentration excessive detector 310.

[0041] Specifically, the positioning rod 33 is slidably connected to different positions in the positioning sleeve 34, and is used to adjust the spacing between the two sets of rollers 31 and the anti-slip plate 32, so that the storage bucket 35 can follow the opening and closing angles of the first positioning plate 11 and the second positioning plate 13, and perform adaptive adjustment at different positions at the bottom of the detection device. When the storage bucket 35 is attached to the surface of the steel structure 4, the excess anti-corrosion material falling from the wet film of the steel structure 4 can be collected and stored at the port of the drainage tube 36. During the continuous operation of the suction pump, the anti-corrosion material at the port of the drainage tube 36 passes through the detection tube 37 in sequence. The formaldehyde concentration detector 39 and the toluene concentration exceeding standard detector 310 are used in combination to detect the formaldehyde concentration and toluene concentration of the anti-corrosion material, analyze the content of harmful substances in the anti-corrosion material in the wet film state, and then store the excess anti-corrosion material in the paint storage tank after passing through the recovery tube 38.

[0042] The working principle of the detection device for the anti-corrosion coating layer of a steel structure proposed by the embodiment of the present invention is as follows:

[0043] The first positioning plate 11 and the second positioning plate 13 are rotated around the shaft pin 15 so that one end of the first positioning plate 11 and the second positioning plate 13 form different opening and closing angles for clamping steel structures 4 of different sizes. The first hand wheel 112 is then rotated to rotate the internal threaded barrel 110 to one side, and the first screw rod 111 is threadedly fastened to different positions in the internal threaded barrel 110, so as to position and lock the first positioning plate 11 and the second positioning plate 13 with different opening and closing angles for clamping the steel structure 4.

[0044] The second hand wheel 24 is rotated to drive the second screw rod 23 to be threadedly connected to the lower limit plate 17, and the adjusting block 21 is made to slide downward in the adjusting hole 18. The scale marks on the outer wall of the adjusting block 21 are used to observe the falling distance of the adjusting block 21. The adjusting block 21 drives the wet film wheel 211 to fit the wet film on the surface of the steel structure 4. The wet film wheel 211 is placed on the wet film so that its minimum reading is at the top, and the maximum gap between the eccentric wheel and the paint film is just above the wet film. The thickness gauge is rolled on the paint film in the direction of the minimum scale of the thickness gauge for half a circle, and the rolling is repeated in the opposite direction for half a circle. The readings of the first contact point of the wet film with the eccentric wheel when rolling in two directions are read, and the average value is the test result.

[0045] After the hexagonal nuts at both ends of the third screw rod 29 are loosened, the contact angle between the wet film wheel 211 and the steel structure 4, as well as the angle between the several groups of through holes on the outer wall of the air collecting pipe 27 and the steel structure 4 can be adjusted. When the air pump 26 continues to work, the gas is injected into the air collecting pipe 27 through the hose, and the gas is discharged through the several groups of through holes and blown on the surface of the steel structure 4 for rapid air drying of the wet film.

[0046] After the test pen 212 is separated from the assembly plate 28, the end of the test pen 212 is brought into contact with the air-dried paint surface of the steel structure 4, so that the test pen 212 transmits the test data to the dry film thickness gauge for detecting the thickness of the dry film;

[0047] The positioning rod 33 is slidably connected to different positions in the positioning sleeve 34 to adjust the spacing between the two sets of rollers 31 and the anti-slip plate 32, so that the storage bucket 35 can follow the opening and closing angles of the first positioning plate 11 and the second positioning plate 13, and perform adaptive adjustment at different positions at the bottom of the detection device. When the storage bucket 35 is attached to the surface of the steel structure 4, the excess anti-corrosion material falling from the wet film of the steel structure 4 can be collected and stored at the port of the drainage tube 36. During the continuous operation of the suction pump, the anti-corrosion material at the port of the drainage tube 36 passes through the detection tube 37 in sequence. The formaldehyde concentration detector 39 and the toluene concentration exceeding standard detector 310 are used in combination to detect the formaldehyde concentration and toluene concentration of the anti-corrosion material, analyze the content of harmful substances in the anti-corrosion material in the wet film state, and then store the excess anti-corrosion material in the paint storage tank after passing through the recovery tube 38.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detection device for anti-corrosion coating layer of steel structure, characterized by: The invention comprises a positioning component (1), a detection component (2) and a recovery component (3); one end of the positioning component (1) is clamped with a steel structure (4); the detection component (2) is slidably connected to the center of the central axis of the positioning component (1), and one side of the detection component (2) is movably fitted with the steel structure (4); one end of the recovery component (3) is slidably connected to the bottom of the positioning component (1), and the other end of the recovery component (3) is embedded in the positioning component (1); a paint storage tank (5) is installed on the outer wall of the recovery component (3) and on a side close to the positioning component (1), and the recovery component (3) is also movably fitted with the steel structure (4); The positioning assembly (1) comprises a first positioning plate (11) and a second positioning plate (13); the first positioning plate (11) and the second positioning plate (13) are both fan-shaped structures, the outer wall of the first positioning plate (11) is provided with a first sliding cavity (12), the outer wall of the second positioning plate (13) is provided with a second sliding cavity (14), and one end of the first positioning plate (11) and the second positioning plate (13) are rotatably connected by a shaft pin (15); The top of the shaft pin (15) is fixedly connected to an upper limit plate (16), and the bottom of the shaft pin (15) is fixedly connected to a lower limit plate (17), an outer wall of the upper limit plate (16) and a side close to the shaft pin (15) is provided with an adjustment hole (18), and the inner wall of the adjustment hole (18) is slidably connected to the detection component (2); The inner walls of the first positioning plate (11) and the second positioning plate (13) are both fixedly connected with hinge seats (19), and the two groups of hinge seats (19) are symmetrically arranged with the central axis of the shaft pin (15) as the center, one group of hinge seats (19) is rotatably connected with an internal threaded cylinder (110), and the other group of hinge seats (19) is rotatably connected with a first screw rod (111), the first screw rod (111) is threadedly connected in the internal threaded cylinder (110), and a first hand wheel (112) is fixedly connected to the outer wall of the internal threaded cylinder (110) and on a side close to the first screw rod (111); The detection assembly (2) comprises an adjustment block (21) and a controller housing (213); the adjustment block (21) is slidably fitted to the inner wall of the adjustment hole (18); the top of the adjustment block (21) is rotatably connected to an adjustment arm (25); the inner wall of the adjustment arm (25) is embedded with an air pump (26); the other end of the adjustment arm (25) is rotatably connected to an air collecting pipe (27); both sides of the end of the air collecting pipe (27) are provided with assembly plates (28); the center of the central axis of the assembly plate (28) is aligned with the center of the adjustment arm (25) and the air collecting pipe (27); A third screw rod (29) passes through each end, and both ends of the third screw rod (29) are threadedly connected with a hexagonal nut, and the hexagonal nuts are abuttingly connected to the assembly plate (28); a plurality of through holes are provided on the outer wall of the air collecting pipe (27), and a hose is connected between the air collecting pipe (27) and the output end of the air pump (26); one end of the air collecting pipe (27) is fixedly connected with a wet film wheel bracket (210), and a wet film wheel (211) is clamped in the wet film wheel bracket (210), and the wet film wheel (211) is movably connected to the outer wall of the steel structure (4); The recovery assembly (3) comprises two groups of rollers (31) and a detection tube (37); both ends of the two groups of rollers (31) are fixedly connected with anti-slip plates (32); one group of rollers (31) is slidably connected to the inner wall of the first sliding cavity (12); the other group of rollers (31) is slidably connected to the inner wall of the second sliding cavity (14); the bottom of one group of anti-slip plates (32) is rotatably connected to a positioning rod (33); the bottom of the other group of anti-slip plates (32) is rotatably connected to a positioning sleeve (34); the positioning sleeve (34) is movably sleeved on the outside of the positioning rod (33); a storage bucket (35) is clamped on the outer wall of the positioning sleeve (34) and on a side close to the positioning rod (33); the storage bucket (35) is fitted and connected to the outer wall of the steel structure (4); and the storage bucket (35) is vertically arranged at the bottom of the wet film wheel (211); One end of the detection tube (37) is sleeved with a drainage tube (36), and one end of the drainage tube (36) is in communication with the storage bucket (35); the other end of the detection tube (37) is sleeved with a recovery tube (38), and one end of the recovery tube (38) is in communication with the controller housing (213); a suction pump is also provided in the controller housing (213), one end of the suction pump is in communication with the recovery tube (38), and the other end of the suction pump is threadedly connected to the paint storage tank (5); a formaldehyde concentration detector (39) and a toluene concentration excessive detector (310) are embedded and installed at the bottom of the detection tube (37).

2. The detection device for anti-corrosion coating layer of steel structure according to claim 1 is characterized in that: The bottom of the adjustment block (21) is fixedly connected to a limit block (22), and the outer wall of the adjustment block (21) is provided with scale marks, and the limit block (22) is abutted against and connected to the bottom of the adjustment hole (18).

3. The detection device for anti-corrosion coating layer of steel structure according to claim 2 is characterized in that: The bottom of the limit block (22) is rotatably connected to a second screw rod (23), and the second screw rod (23) is threadedly connected to the lower limit plate (17), and the bottom end of the second screw rod (23) is fixedly connected to a second hand wheel (24).

4. The detection device for anti-corrosion coating layer of steel structure according to claim 1, characterized in that: The two groups of assembly plates (28) are clamped with test pens (212), the inner wall of the controller housing (213) is provided with a dry film thickness gauge, and the dry film thickness gauge is electrically connected to the test pens (212) via a wire.

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