Concrete roof structure surface crack detection device

Abstract

The invention relates to the technical field of concrete inspection, in particular to a concrete roof structure surface crack detection device which comprises a bearing plate, a concrete block is arranged at the top of the bearing plate, cleaning devices are arranged on the periphery of the concrete block, and four supporting legs distributed in a rectangular shape are arranged on the outer wall of the bearing plate. Two first lead screw sliding tables are mounted on the four supporting legs, a second lead screw sliding table is mounted on a sliding table of the two first lead screw sliding tables, a glue injection device is mounted on a sliding table of the second lead screw sliding table and comprises a connecting plate and a glue injection box, a lifting electric push rod and a guide seat are arranged at the top of the connecting plate, and a guide rod is slidably arranged on the guide seat; and an abutting block is arranged at the bottom of the glue injection box, gluing notches are formed in the middles of the glue injection box and the abutting block, four glue spraying mechanisms are arranged on the glue injection box and the abutting block, and a pressurizing mechanism is arranged at the top of the glue injection box. According to the invention, the surface crack detection quality of the concrete roof structure is improved.

Description

Technical Field

[0001] The invention relates to the technical field of concrete inspection, in particular to a device for detecting surface cracks of a concrete roof structure. Background Art

[0002] Concrete quality inspection includes three aspects: intrinsic quality compressive strength, flexural strength, frost resistance, impermeability, chloride ion permeability resistance and steel bar protection layer thickness, surface quality and external dimension quality. At present, the cubic test block method is the most basic and most commonly used method for testing concrete strength, and it is intuitive and economically reasonable. Test block testing of concrete strength can determine the concrete strength grade, which is an important basis for the solid strength grade of concrete structure. This method occupies a very important position in concrete quality acceptance inspection. Surface crack detection of concrete roof structure is a relatively important link in concrete quality inspection.

[0003] The Chinese invention patent with the announcement number CN114397432B discloses a device for detecting cracks on the surface of a concrete structure, including a test bench for placing concrete blocks, and four rectangularly distributed frame plates are fixedly connected to the upper surface of the test bench, wherein a first round rod is set between two frame plates, and a second round rod is set between the other two frame plates, the first round rod and the second round rod are parallel to each other, and a moving block is slidably connected to the first round rod and the second round rod, and the moving block can move along the axial direction of the first round rod and the second round rod, and a fixed rod is set between the two moving blocks, and a sliding seat is slidably connected to the fixed rod, and a filling component is provided on one side of the sliding seat, and the filling component is used to inject hot melt adhesive into the cracks of the concrete block. The invention injects hot melt adhesive into the cracks to measure the hot melt adhesive that is shaped in accordance with the shape of the crack space, so as to make the detection of concrete cracks more efficient, and at the same time, the crack information measured is more comprehensive and accurate.

[0004] However, the above patent still has the following deficiencies in actual use: the patent injects hot melt adhesive into the concrete block through a filling component, and allows the hot melt adhesive to flow in the cracks by means of vacuum. The cracks in the concrete block in the patent are of the type that penetrate the concrete block body, and the cracks on the traditional concrete roof structure are all surface cracks, that is, the cracks do not penetrate the concrete block body. Therefore, the filling component and the vacuum combination cannot completely fill the hot melt adhesive into the surface cracks that do not penetrate the concrete block body, which affects the quality of surface crack detection of the concrete roof structure. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a device for detecting surface cracks of a concrete roof structure to solve the problem of how to improve the quality of detecting surface cracks of a concrete roof structure proposed in the above background technology.

[0006] The technical solution of the present invention is:

[0007] A surface crack detection device for a concrete roof structure comprises a bearing plate, a concrete block is arranged on the top of the bearing plate, a cleaning device for cleaning the inside of the surface crack is arranged around the concrete block, four supporting legs distributed in a rectangular shape are arranged on the outer wall of the bearing plate, two symmetrically arranged first screw slides are installed on the four supporting legs, a second screw slide is installed on the slide of the two first screw slides, a glue injection device is installed on the slide of the second screw slide, the glue injection device comprises a connecting plate and a glue injection box, and the top of the connecting plate is provided with a symmetrically arranged A lifting electric push rod and a guide seat, a guide rod is slidably arranged on the guide seat, an abutment block is arranged at the bottom of the glue injection box, and glue injection slots are opened in the middle of the glue injection box and the abutment block. The glue injection box and the abutment block are provided with four glue spraying mechanisms distributed in a rectangular shape and spraying hot melt glue into the glue injection slots. A pressurizing mechanism for pressurizing the glue injection slots is arranged on the top of the glue injection box, and a glue filling port is arranged on the side wall of the glue injection box. The connecting plate is horizontally connected to the slide of the second screw slide, and the output end of the lifting electric push rod and the bottom of the guide rod are fixedly connected to the top of the glue injection box.

[0008] Preferably, the cleaning device includes a stabilizing slide, a conveying screw, a first rotating seat, a first motor and an air jet pipe, two of the stabilizing slide and the conveying screw are provided, a movable sleeve is screwed on the conveying screw, a hanging plate is provided on the side wall of the movable sleeve, a stabilizing slider is provided at the bottom of the hanging plate, a swing mechanism is provided on one of the hanging plates, a second rotating seat is provided on the top of the movable sleeve, a sprocket is provided at one end of the conveying screw, four of the first rotating seats are provided, a plurality of air jet heads arranged at equal intervals are provided on the air jet pipe, one end of the air jet pipe is a closed end, a pipe joint is provided at the other end of the air jet pipe, and two stabilizing slides are symmetrically arranged on the bearing The top of the plate, the four first rotating seats are rectangularly arranged on the top of the bearing plate, the concrete block is located between the four first rotating seats, the two conveying screws are symmetrically rotatably arranged on the four first rotating seats, the two stable sliders are respectively slidably arranged on the two stable slideways, the two sprockets are connected by chain transmission, the first motor is horizontally arranged on the top of the bearing plate, and the first motor is connected to one of the conveying screws through a coupling, the jet pipe is rotatably arranged on the two second rotating seats, the swing mechanism is transmission-connected to one end of the jet pipe, and an air pumping mechanism is provided on the bearing plate and the other hanging plate, and the air pumping mechanism is connected to the pipe joint.

[0009] Preferably, the swing mechanism includes a second motor, a first disc, a second disc and a linkage rod, the first disc is provided with a first eccentric shaft, the second disc is provided with a second eccentric shaft, the diameter of the second disc is larger than the diameter of the first disc, the second motor is horizontally arranged on a hanging plate, the first disc is fixedly connected to the output end of the second motor, the second disc is arranged on one end of the jet pipe, and the two ends of the linkage rod are respectively hinged to the first eccentric shaft and the second eccentric shaft.

[0010] Preferably, the pumping mechanism includes an air pump body and a guide plate, a piston is slidably provided in the air pump body, a vertically arranged guide rod is provided on the top of the piston, a top plate is provided on the top of the guide rod, and two symmetrically arranged guide columns are provided on the outer wall of the top plate, an air outlet pipe and an air inlet pipe are provided on the air pump body, an air outlet one-way valve is provided in the air outlet pipe, an air inlet one-way valve is provided in the air inlet pipe, two guide plates are provided, and a wave guide groove that slidably cooperates with the guide column is provided on the side wall of the guide plate, vertical plates are provided on both sides of the supporting plate, the air pump body is vertically arranged on the top of another suspended plate, the air outlet pipe is connected to the pipe joint through a pipe, the two guide plates are symmetrically arranged on the two vertical plates, and the top plate is located between the two guide plates.

[0011] Preferably, the pumping mechanism further comprises a dust box, a dust hood is provided at one end of the dust box, the dust box is arranged beside the pump body, the air intake pipe is connected to the dust box, and a filter is provided at the inlet of the air intake pipe.

[0012] Preferably, the glue spraying mechanism comprises a push rod and a U-shaped tube, the bottom of the push rod is provided with an abutment disk, the push rod is sleeved with a spring, a glue spraying tube is provided in the middle of the U-shaped tube, a glue discharge one-way valve is provided in the glue spraying tube, a glue inlet one-way valve is provided in the glue spraying tube and on the side of the glue spraying tube, a built-in groove is provided at the bottom of the abutment block, the groove top of the built-in groove is provided with a sliding groove that slidably cooperates with the push rod, the push rod is arranged in the built-in groove and the sliding groove, and the top of the push rod passes through the bottom of the glue injection box, the two ends of the spring are respectively fixedly connected to the groove top of the built-in groove and the abutment disk, the U-shaped tube is arranged in the glue injection box, and the groove wall of the glue injection notch of the glue injection box is provided with a mounting hole matching the glue spraying tube, the upper half of the push rod is slidably arranged in one end of the U-shaped tube, and the height of the feed port at the other end of the U-shaped tube is higher than the inner bottom wall of the glue injection box.

[0013] Preferably, a rubber layer is provided at the bottom of the abutment disk.

[0014] Preferably, the pressurizing mechanism includes a U-shaped frame, a downward pressing electric push rod, a downward pressing frame matching the gluing slot, a bidirectional movable electric push rod and a baffle, the inner bottom walls on both sides of the downward pressing frame are provided with a plurality of first air vents and two symmetrically arranged guide slides, the baffle is provided with a plurality of second air vents, the baffle is provided with two, and the tail end of the baffle is provided with a vertically arranged fixing plate, the U-shaped frame is arranged on the top of the glue injection box, the downward pressing electric push rod is vertically arranged on the top of the U-shaped frame, the inner bottom wall of the downward pressing frame is fixedly connected to the output end of the downward pressing electric push rod, the downward pressing frame is located directly above the gluing slot, the bidirectional movable electric push rod is horizontally arranged on the inner bottom wall of the downward pressing frame, the baffle is slidably arranged on the two guide slides located on the same side, and the two output ends of the bidirectional movable electric push rod are respectively fixedly connected to the two fixing plates.

[0015] Preferably, the bottom of the pressing frame is provided with an outer chamfer.

[0016] Preferably, a sealing buffer layer connected to the gluing notch is provided at the bottom of the abutment block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Firstly, the present invention first cleans the surface cracks of the concrete block through the cleaning device, and can drive the glue injection box to perform three-axial movement of up, down, left, right, front and back through the cooperation between the two first screw slides, the second screw slide and the lifting electric push rod, and can spray the hot melt glue in the glue injection box into the glue injection groove through the glue spraying mechanism, and then the hot melt glue can flow to the top of the concrete block, and then the hot melt glue is filled into the surface cracks of the concrete block through the pressurizing mechanism, thereby improving the detection quality of the surface cracks of the concrete roof structure.

[0019] Secondly, the present invention enables the jet pipe to swing back and forth through the cooperation among the second motor, the first disc, the second disc, the first eccentric shaft, the second eccentric shaft and the linkage rod, thereby improving the quality of cleaning the surface cracks of the concrete block.

[0020] Thirdly, the present invention enables the piston to move up and down reciprocatingly through the cooperation of the guide column and the wave guide groove. When the piston moves up, the outside air can be sucked into the pump body. When the piston moves down, the gas in the pump body can enter the jet pipe and then be ejected from all the jet heads.

[0021] Fourthly, the present invention enables hot melt adhesive to be sprayed out from the adhesive spraying tube through the cooperation among the lifting electric push rod, the abutment plate, the push rod, the spring and the U-shaped tube, and the hot melt adhesive in the adhesive injection box can be drawn into the U-shaped tube.

[0022] Fifthly, the present invention drives the two baffles to move by a bidirectionally movable electric push rod so that the second vent hole is staggered or overlapped with the first vent hole, thereby ensuring that when the pressing frame moves downward, the entire bottom of the pressing frame is sealed, and the pressing frame can apply pressure to the hot melt adhesive; when the pressing frame moves upward, the bottom of the pressing frame is not sealed, and the hot melt adhesive cannot be pulled by the upward movement of the pressing frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the surface crack detection device of the concrete roof structure of the present invention;

[0024] Figure 2 A top view of a device for detecting surface cracks in a concrete roof structure according to the present invention;

[0025] Figure 3 The partial structure diagram of the concrete roof structure surface crack detection device of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0027] Figure 5 for Figure 3 The enlarged view of point B in the middle;

[0028] Figure 6 The partial structure diagram of the concrete roof structure surface crack detection device of the present invention is shown in FIG. Figure 2 ;

[0029] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0030] Figure 8 It is a partial cross-sectional view of the pumping structure;

[0031] Fig. 9 Schematic diagram of the three-dimensional structure of the glue injection device Figure 1 ;

[0032] Fig.10 Schematic diagram of the three-dimensional structure of the glue injection device Figure 2 ;

[0033] Fig.11 It is a structural schematic diagram of the pressurizing mechanism;

[0034] Fig.12 It is a cross-sectional view of the glue injection box;

[0035] Fig.13 It is a partial cross-sectional view of the glue injection device.

[0036] In the figure:

[0037] 1. Loading plate; 11. Supporting legs; 12. First screw slide; 13. Second screw slide; 14. Vertical plate; 2. Cleaning device; 21. Stable slideway; 22. Conveying screw; 221. Moving sleeve; 222. Hanging plate; 223. Stable slide block; 224. Second rotating seat; 225. Sprocket; 23. First rotating seat; 24. First motor; 25. Jet pipe; 251. Jet head; 252 , pipe joint; 26, swing mechanism; 261, second motor; 262, first disc; 2621, first eccentric shaft; 263, second disc; 2631, second eccentric shaft; 264, linkage rod; 27, pumping mechanism; 271, pump body; 2711, air outlet pipe; 2712, air inlet pipe; 2713, air outlet check valve; 2714, air inlet check valve; 272, guide plate; 272 1. Wave guide groove; 273. Piston; 274. Guide rod; 275. Top plate; 276. Guide column; 277. Dust collecting box; 278. Dust collecting hood; 3. Connecting plate; 31. Lifting electric pusher; 32. Guide seat; 33. Guide rod; 4. Glue injection box; 41. Glue injection notch; 42. Glue adding port; 5. Abutment block; 51. Built-in groove; 52. Sealing buffer layer; 6. Glue spraying mechanism; 61. Ejector rod; 62. U-shaped tube; 63. Abutment plate; 64. Spring; 65. Glue spraying tube; 66. Glue outlet non-return valve; 67. Glue inlet non-return valve; 7. Pressurizing mechanism; 71. U-shaped frame; 72. Pressing electric push rod; 73. Pressing frame; 731. First vent hole; 732. Guide slide; 74. Bidirectional moving electric push rod; 75. Baffle; 751. Second vent hole; 752. Fixing plate; 8. Concrete block. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-13 The present invention describes the above technical solution in detail through the following embodiments:

[0040] A surface crack detection device for a concrete roof structure comprises a bearing plate 1, a concrete block 8 is arranged on the top of the bearing plate 1, a cleaning device 2 for cleaning the inside of the surface cracks is arranged around the concrete block 8, four supporting legs 11 distributed in a rectangular shape are arranged on the outer wall of the bearing plate 1, two symmetrically arranged first screw slides 12 are installed on the four supporting legs 11, a second screw slide 13 is installed on the slide of the two first screw slides 12, a glue injection device is installed on the slide of the second screw slide 13, the glue injection device comprises a connecting plate 3 and a glue injection box 4, and a lifting electric push rod is symmetrically arranged on the top of the connecting plate 3 31 and a guide seat 32, a guide rod 33 is slidably arranged on the guide seat 32, an abutment block 5 is arranged at the bottom of the glue injection box 4, a glue injection slot 41 is opened in the middle of the glue injection box 4 and the abutment block 5, four glue spraying mechanisms 6 distributed in a rectangular shape and spraying hot melt glue into the glue injection slot 41 are arranged on the glue injection box 4 and the abutment block 5, a pressurizing mechanism 7 for pressurizing the glue injection slot 41 is arranged on the top of the glue injection box 4, a glue filling port 42 is arranged on the side wall of the glue injection box 4, the connecting plate 3 is horizontally connected to the slide of the second screw slide 13, and the output end of the lifting electric push rod 31 and the bottom of the guide rod 33 are fixedly connected to the top of the glue injection box 4.

[0041] The present invention can first clean the surface cracks of the concrete block 8 through the cleaning device 2, so that the broken particles of the concrete block 8 in the surface cracks of the concrete block 8 can be removed. The cleaning device 2 includes a stabilizing slide 21, a conveying screw 22, a first rotating seat 23, a first motor 24 and an air jet 25. The stabilizing slide 21 and the conveying screw 22 are each provided with two. A movable sleeve 221 is screwed on the conveying screw 22. A hanging plate 222 is provided on the side wall of the movable sleeve 221. A stabilizing slider 223 is provided at the bottom of the hanging plate 222. A swing mechanism 26 is provided on one of the hanging plates 222. A second rotating seat 224 is provided on the top of the movable sleeve 221. A sprocket 225 is provided at one end of the conveying screw 22. Four first rotating seats 23 are provided. A plurality of air jet heads 251 arranged at equal intervals are provided on the air jet 25. One end of the air jet 25 is a closed end. The air jet 2 5 is provided with a pipe joint 252 at the other end, two stable slideways 21 are symmetrically arranged on the top of the bearing plate 1, four first rotating seats 23 are rectangularly arranged on the top of the bearing plate 1, the concrete block 8 is located between the four first rotating seats 23, two conveying screw rods 22 are symmetrically rotatably arranged on the four first rotating seats 23, two stable sliders 223 are respectively slidably arranged on the two stable slideways 21, two sprocket wheels 225 are connected by chain transmission, the first motor 24 is horizontally arranged on the top of the bearing plate 1, and the first motor 24 is connected to one of the conveying screw rods 22 through a coupling, the air injection pipe 25 is rotatably arranged on the two second rotating seats 224, the swing mechanism 26 is transmission-connected to one end of the air injection pipe 25, and an air pumping mechanism 27 is provided on the bearing plate 1 and the other hanging plate 222, and the air pumping mechanism 27 is communicated with the pipe joint 252.

[0042] The swing mechanism 26 includes a second motor 261, a first disc 262, a second disc 263 and a linkage rod 264. The first disc 262 is provided with a first eccentric shaft 2621, the second disc 263 is provided with a second eccentric shaft 2631, the diameter of the second disc 263 is larger than the diameter of the first disc 262, the second motor 261 is horizontally arranged on the suspension plate 222, the first disc 262 is fixedly connected to the output end of the second motor 261, the second disc 263 is arranged on one end of the injection pipe 25, and the two ends of the linkage rod 264 are respectively hinged to the first eccentric shaft 2621 and the second eccentric shaft 2631.

[0043] The pumping mechanism 27 includes a pump body 271 and a guide plate 272. A piston 273 is slidably arranged in the pump body 271. A vertical guide rod 274 is arranged on the top of the piston 273. A top plate 275 is arranged on the top of the guide rod 274. Two symmetrically arranged guide columns 276 are arranged on the outer wall of the top plate 275. An air outlet pipe 2711 and an air inlet pipe 2712 are arranged on the pump body 271. An air outlet check valve 2713 is arranged in the air outlet pipe 2711. An air inlet check valve 2713 is arranged in the air inlet pipe 2712. An air intake check valve 2714 is provided, two guide plates 272 are provided, and a wave guide groove 2721 that slides with the guide column 276 is provided on the side wall of the guide plate 272. Vertical plates 14 are provided on both sides of the supporting plate 1. The air pump body 271 is vertically arranged on the top of another suspended plate 222. The air outlet pipe 2711 is connected to the pipe joint 252 through a pipe. The two guide plates 272 are symmetrically arranged on the two vertical plates 14, and the top plate 275 is located between the two guide plates 272.

[0044] The pumping mechanism 27 also includes a dust box 277 , one end of which is provided with a dust hood 278 . The dust box 277 is arranged beside the pump body 271 . The air inlet pipe 2712 is connected to the dust box 277 , and a filter is provided at the inlet of the air inlet pipe 2712 .

[0045] The working principle of the cleaning device 2 is as follows: the first motor 24 drives the corresponding conveying screw 22 to rotate through the linkage, and the conveying screw 22 drives the sprocket 225 to rotate, and the sprocket 225 drives another sprocket 225 to rotate through the chain, and the other sprocket 225 drives the corresponding conveying screw 22 to rotate. After the two conveying screws 22 rotate synchronously, the two movable sleeves 221 also move synchronously, and the two movable sleeves 221 drive the injection pipe 25 to move. At this time, the second motor 261 drives the first disc 262 to rotate, and the first eccentric shaft 2621 on the first disc 262 drives one end of the linkage rod 264 to move, and the other end of the linkage rod 264 drives the second eccentric shaft 2631 to swing, and the second eccentric shaft 2631 drives the second disc 263 to swing synchronously, and the second disc 263 drives the injection pipe 25 and all the injection heads 251 to swing synchronously, and when the movable sleeve 221 moves, it also drives the pump body 271 to move synchronously, and the pump body 271 drives the guide rod 274 and the top plate 275 synchronously. The top plate 275 is pulled by the guide column 276 and the wave guide groove 2721 to reciprocate up and down. The top plate 275 drives the guide rod 274 and the piston 273 to reciprocate up and down synchronously. When the piston 273 moves downward, the gas in the pump body 271 is squeezed by the piston 273 and discharged from the outlet pipe 2711. The outlet pipe 2711 transports the gas into the pipeline, and then enters the injection pipe 25 through the pipeline joint 252, and then is ejected from all the injection heads 251. The gas can clean the cracks on the surface of the concrete block 8. When the piston 273 moves upward, the external gas can enter the dust box 277 through the dust hood 278, so that some flying dust can be sucked into the dust box 277. The filter can prevent dust from entering the air pump body 271. The gas enters the air pump body 271 through the air inlet pipe 2712. After the piston 273 moves downward, the gas is ejected from the nozzle 251, and the debris in the cracks on the surface of the concrete block 8 can be removed.

[0046] It is worth noting that the functions of the air inlet check valve 2714 and the air outlet check valve 2713 are to allow external gas to enter only from the air inlet pipe 2712 , and the gas in the air pump body 271 can only be discharged from the air outlet pipe 2711 .

[0047] After the surface cracks of the concrete block 8 are cleaned, the two first screw slides 12 and the second screw slides 13 cooperate to drive the glue injection device to move in two axial directions, front and back, left and right, and then the glue injection box 4 is driven to move downward by the lifting electric push rod 31, and the abutment block 5 also moves downward synchronously with the glue injection box 4, and then the hot melt glue in the glue injection box 4 is sprayed into the glue injection groove 41 through the glue spraying mechanism 6. The glue spraying mechanism 6 includes a push rod 61 and a U-shaped tube 62. The bottom of the push rod 61 is provided with an abutment plate 63, and the push rod 61 is sleeved with a spring 64. A glue spraying tube 65 is provided in the middle of the U-shaped tube 62, and a glue discharge one-way valve 66 is provided in the glue spraying tube 65. A glue inlet one-way valve 67 is provided on the side of the glue spraying tube 65, a built-in groove 51 is provided at the bottom of the abutment block 5, a sliding groove slidably matched with the push rod 61 is opened at the top of the built-in groove 51, the push rod 61 is arranged in the built-in groove 51 and the sliding groove, and the top of the push rod 61 passes through the bottom of the glue injection box 4, the two ends of the spring 64 are respectively fixedly connected to the top of the built-in groove 51 and the abutment plate 63, the U-shaped tube 62 is arranged in the glue injection box 4, and the groove wall of the glue injection groove 41 of the glue injection box 4 is provided with a mounting hole matching the glue spraying tube 65, the upper half of the push rod 61 is slidably arranged in one end of the U-shaped tube 62, and the height of the feed port at the other end of the U-shaped tube 62 is higher than the inner bottom wall of the glue injection box 4.

[0048] When the glue injection box 4 and the abutment block 5 move downward synchronously, the abutment plates 63 of the four glue spraying mechanisms 6 abut against the top of the concrete block 8 synchronously, and then the abutment plates 63 drive the push rod 61 to move upward, the spring 64 is compressed, and the upper half of the push rod 61 is also squeezed at one end of the U-shaped tube 62, and the hot melt glue in the U-shaped tube 62 can be sprayed out from the glue spraying tube 65, and then the hot melt glue can enter the glue notch 41, and then the hot melt glue can flow to the top of the concrete block 8. In order to make the top of the concrete block 8 The amount of hot melt glue in the glue box 4 is sufficient, and the lifting electric push rod 31 can drive the glue injection box 4 to lift and reciprocate. When the glue injection box 4 moves upward, the elastic force of the spring 64 can drive the abutment plate 63 to move downward all the time, and the upper half of the push rod 61 also moves downward at one end of the U-shaped tube 62. The hot melt glue in the glue injection box 4 can be drawn into the U-shaped tube 62 from the other end of the U-shaped tube 62. When the glue injection box 4 is driven to move downward again by the lifting electric push rod 31, the hot melt glue in the U-shaped tube 62 can be sprayed out from the glue spraying tube 65.

[0049] It is worth noting that the functions of the glue outlet one-way valve 66 and the glue inlet one-way valve 67 are to allow the hot melt glue in the glue injection box 4 to be drawn in only from the other end of the U-shaped tube 62 , and the hot melt glue in the U-shaped tube 62 to be sprayed out only from the glue spraying tube 65 .

[0050] A rubber layer is provided at the bottom of the abutment plate 63 , and the rubber layer can provide a buffer force to reduce the damage rate of the concrete block 8 .

[0051] After the hot melt adhesive on the concrete block 8 is sufficient, the hot melt adhesive is injected into the crack by the pressurizing mechanism 7. The pressurizing mechanism 7 includes a U-shaped frame 71, a downward pressing electric push rod 72, a downward pressing frame 73 matching the glue-injecting notch 41, a bidirectional movable electric push rod 74 and a baffle 75. The inner bottom walls on both sides of the downward pressing frame 73 are provided with a plurality of first vent holes 731 and two symmetrically arranged guide slideways 732. The baffle 75 is provided with a plurality of second vent holes 751. The baffle 75 is provided with two. The tail end of the baffle 75 is provided with a vertically arranged fixed Plate 752, the U-shaped frame 71 is arranged on the top of the glue injection box 4, the downward pressing electric push rod 72 is vertically arranged on the top of the U-shaped frame 71, the inner bottom wall of the downward pressing frame 73 is fixedly connected to the output end of the downward pressing electric push rod 72, the downward pressing frame 73 is located directly above the glue injection groove 41, the bidirectional movable electric push rod 74 is horizontally arranged on the inner bottom wall of the downward pressing frame 73, the baffle 75 is slidably arranged on two guide slides 732 located on the same side, and the two output ends of the bidirectional movable electric push rod 74 are respectively fixedly connected to the two fixed plates 752.

[0052] The pressing electric push rod 72 drives the pressing frame 73 to enter the glue-spraying slot 41 of the glue injection box 4. At this time, the first vent hole 731 and the second vent hole 751 are staggered. Therefore, after the pressing frame 73 enters the glue-spraying slot 41, it can squeeze the hot melt glue on the top of the concrete block 8, and the hot melt glue can penetrate into the surface cracks. Then, the pressing electric push rod 72 drives the pressing frame 73 to move upward. At the same time, the bidirectional moving electric push rod 74 drives the two fixed plates 752 to move relative to each other. The fixed plate 752 drives the two baffle plates 75 to move respectively, and the second air hole 751 on the baffle plate 75 gradually overlaps with the first air hole 731. Therefore, after the downward frame moves upward, the hot melt adhesive is pulled upward. When the downward pressing electric push rod 72 drives the downward pressing frame 73 to move downward again, the bidirectional movable electric push rod 74 drives the two fixed plates 752 to move in the opposite direction, and the second air hole 751 on the baffle plate 75 is staggered with the first air hole 731 again. This cycle continues, and the cracks on the surface of the concrete block 8 can be filled with hot melt adhesive.

[0053] The bottom of the pressing frame 73 is provided with an outer chamfer, and the pressing frame 73 can smoothly enter the glue injection slot 41 on the glue injection box 4 by utilizing the outer chamfer.

[0054] A sealing buffer layer 52 connected to the glue injection slot 41 is provided at the bottom of the abutment block 5 . The sealing buffer layer 52 is used to increase the sealing performance so that the hot melt adhesive will not overflow from between the abutment block 5 and the concrete block 8 .

Claims

1. A device for detecting cracks on a concrete roof structure, characterized in that: The invention comprises a bearing plate (1), a concrete block (8) is arranged on the top of the bearing plate (1), a cleaning device (2) for cleaning the inside of surface cracks is arranged around the concrete block (8), four supporting legs (11) distributed in a rectangular shape are arranged on the outer wall of the bearing plate (1), two symmetrically arranged first screw slides (12) are installed on the four supporting legs (11), a second screw slide (13) is installed on the slide of the two first screw slides (12), a glue injection device is installed on the slide of the second screw slide (13), the glue injection device comprises a connecting plate (3) and a glue injection box (4), the top of the connecting plate (3) is provided with a symmetrically arranged lifting electric push rod (31) and a guide seat (32), the guide seat (32) A guide rod (33) is slidably arranged on the seat (32); a contact block (5) is arranged at the bottom of the glue injection box (4); a glue injection slot (41) is opened in the middle of the glue injection box (4) and the contact block (5); four glue spraying mechanisms (6) are arranged on the glue injection box (4) and the contact block (5) and are arranged in a rectangular shape to spray hot melt glue into the glue injection slot (41); a pressurizing mechanism (7) is arranged on the top of the glue injection box (4) to pressurize the glue injection slot (41); a glue injection port (42) is arranged on the side wall of the glue injection box (4); the connecting plate (3) is horizontally connected to the slide of the second screw slide (13); the output end of the lifting electric push rod (31) and the bottom of the guide rod (33) are fixedly connected to the top of the glue injection box (4).

2. The device for detecting surface cracks in a concrete roof structure according to claim 1, characterized in that: The cleaning device (2) comprises a stabilizing slideway (21), a conveying screw (22), a first rotating seat (23), a first motor (24) and an air jet pipe (25), wherein the stabilizing slideway (21) and the conveying screw (22) are each provided with two, a movable sleeve (221) is screwed onto the conveying screw (22), a hanging plate (222) is provided on the side wall of the movable sleeve (221), a stabilizing slider (223) is provided at the bottom of the hanging plate (222), and one of the hanging plates (2 22) is provided with a swing mechanism (26), the top of the movable sleeve (221) is provided with a second rotating seat (224), one end of the conveying screw rod (22) is provided with a sprocket (225), the first rotating seat (23) is provided with four, the jet pipe (25) is provided with a plurality of jet heads (251) arranged at equal intervals, one end of the jet pipe (25) is a closed end, the other end of the jet pipe (25) is provided with a pipe joint (252), and the two stable slideways (21) is symmetrically arranged on the top of the bearing plate (1), four of the first rotating seats (23) are rectangularly arranged on the top of the bearing plate (1), the concrete block (8) is located between the four first rotating seats (23), the two conveying screws (22) are symmetrically rotatably arranged on the four first rotating seats (23), the two stabilizing sliders (223) are respectively slidably arranged on the two stabilizing slideways (21), the two sprocket wheels (225) are connected by chain transmission, the first motor (24) is horizontally arranged on the top of the bearing plate (1), and the first motor (24) is connected to one of the conveying screws (22) through a coupling, the air injection pipe (25) is rotatably arranged on the two second rotating seats (224), the swing mechanism (26) is transmission-connected to one end of the air injection pipe (25), and an air pumping mechanism (27) is provided on the bearing plate (1) and the other hanging plate (222), and the air pumping mechanism (27) is connected to the pipe joint (252).

3. The device for detecting surface cracks in a concrete roof structure according to claim 2, characterized in that: The swing mechanism (26) comprises a second motor (261), a first disc (262), a second disc (263) and a linkage rod (264); the first disc (262) is provided with a first eccentric shaft (2621); the second disc (263) is provided with a second eccentric shaft (2631); the diameter of the second disc (263) is greater than the diameter of the first disc (262); the second motor (261) is horizontally arranged on a suspension plate (222); the first disc (262) is fixedly connected to the output end of the second motor (261); the second disc (263) is arranged on one end of the jet pipe (25); and the two ends of the linkage rod (264) are respectively hinged to the first eccentric shaft (2621) and the second eccentric shaft (2631).

4. The device for detecting surface cracks in a concrete roof structure according to claim 2, characterized in that: The pumping mechanism (27) comprises an air pump body (271) and a guide plate (272). A piston (273) is slidably arranged in the air pump body (271). A vertically arranged guide rod (274) is arranged on the top of the piston (273). A top plate (275) is arranged on the top of the guide rod (274). Two symmetrically arranged guide columns (276) are arranged on the outer wall of the top plate (275). An air outlet pipe (2711) and an air inlet pipe (2712) are arranged on the air pump body (271). An air outlet one-way valve (2713) is arranged in the air outlet pipe (2711). The air inlet pipe (2712) is provided with a valve for air outlet. 12) is provided with an air intake check valve (2714), two guide plates (272) are provided, and the side walls of the guide plates (272) are provided with wave guide grooves (2721) that slide with the guide columns (276). Vertical plates (14) are provided on both sides of the support plate (1), and the air pump body (271) is vertically arranged on the top of another hanging plate (222). The air outlet pipe (2711) is connected to the pipe joint (252) through a pipe. The two guide plates (272) are symmetrically arranged on the two vertical plates (14), and the top plate (275) is located between the two guide plates (272).

5. The device for detecting surface cracks in a concrete roof structure according to claim 4, characterized in that: The pumping mechanism (27) further comprises a dust collecting box (277), one end of which is provided with a dust collecting hood (278), the dust collecting box (277) is arranged beside the pump body (271), the air inlet pipe (2712) is connected with the dust collecting box (277), and a filter is provided at the inlet of the air inlet pipe (2712).

6. The device for detecting surface cracks in a concrete roof structure according to claim 1, characterized in that: The glue spraying mechanism (6) comprises a push rod (61) and a U-shaped tube (62). The bottom of the push rod (61) is provided with an abutment plate (63). The push rod (61) is sleeved with a spring (64). The middle of the U-shaped tube (62) is provided with a glue spraying tube (65). The glue spraying tube (65) is provided with a glue discharge check valve (66). The glue spraying tube (65) is provided with a glue inlet check valve (67) in and beside the glue spraying tube (65). The bottom of the abutment block (5) is provided with a built-in groove (51). The groove top of the built-in groove (51) is provided with a sliding groove that slidably cooperates with the push rod (61). The push rod (61) is arranged in the built-in groove (51) and the slide groove, and the top of the push rod (61) passes through the bottom of the glue injection box (4). The two ends of the spring (64) are respectively fixedly connected to the top of the built-in groove (51) and the abutment plate (63). The U-shaped tube (62) is arranged in the glue injection box (4). The groove wall of the glue injection groove (41) of the glue injection box (4) is provided with a mounting hole matching the glue spraying tube (65). The upper half of the push rod (61) is slidably arranged in one end of the U-shaped tube (62), and the height of the feed port at the other end of the U-shaped tube (62) is higher than the inner bottom wall of the glue injection box (4).

7. The device for detecting surface cracks in a concrete roof structure according to claim 6, characterized in that: The bottom of the abutment disc (63) is provided with a rubber layer.

8. The device for detecting surface cracks in a concrete roof structure according to claim 1, characterized in that: The pressurizing mechanism (7) comprises a U-shaped frame (71), a downward pressing electric push rod (72), a downward pressing frame (73) matched with the glue-spraying notch (41), a bidirectional movable electric push rod (74) and a baffle (75), the inner bottom walls on both sides of the downward pressing frame (73) are provided with a plurality of first vents (731) and two symmetrically arranged guide slideways (732), the baffle (75) is provided with a plurality of second vents (751), the baffle (75) is provided with two, the tail end of the baffle (75) is provided with a vertically arranged fixing plate (752), the U-shaped frame (71) is provided with At the top of the glue injection box (4), the downward pressing electric push rod (72) is vertically arranged on the top of the U-shaped frame (71), the inner bottom wall of the downward pressing frame (73) is fixedly connected to the output end of the downward pressing electric push rod (72), the downward pressing frame (73) is located directly above the glue injection notch (41), the bidirectional movable electric push rod (74) is horizontally arranged on the inner bottom wall of the downward pressing frame (73), the baffle (75) is slidably arranged on two guide slideways (732) located on the same side, and the two output ends of the bidirectional movable electric push rod (74) are respectively fixedly connected to two fixed plates (752).

9. The device for detecting surface cracks in a concrete roof structure according to claim 8, characterized in that: The bottom of the pressing frame (73) is provided with an outer chamfer.

10. The device for detecting surface cracks in a concrete roof structure according to claim 1, characterized in that: The bottom of the abutment block (5) is provided with a sealing buffer layer (52) connected to the gluing notch (41).

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