Steel structure detection device for constructional engineering

Abstract

The invention discloses a steel structure detection device for constructional engineering, which comprises a track and a detection assembly advancing along the track, the track is arranged on the surface of a to-be-detected steel structure through a frame body, the detection assembly comprises a fixed seat, a driving seat, a plurality of driving shafts, a negative pressure assembly and a probe fixing cylinder, and the fixed seat keeps not rotating and advances along a guide rod; the driving seat is rotationally connected with the fixed seat, a first gear ring sleeves the periphery of the driving seat, a second gear ring is arranged on the inner periphery of the driving seat, and the first gear ring is meshed with the rack; the driving shaft is arranged on the fixed seat, and a first gear meshed with the second gear ring is arranged on a shaft body; the probe fixing cylinder is used for clamping a detection probe and is sleeved in the fixing seat; the negative pressure assembly is arranged on the probe fixing cylinder, and the driving shaft rotates to drive the negative pressure assembly and the driving seat at the same time, so that the detection probe is always attached to the surface of the steel structure while the detection assembly advances along the track to detect the steel structure, and the accuracy of the detection result is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of non-destructive testing equipment for steel structures, and specifically to a steel structure detection device for construction projects. Background Technique

[0002] A steel structure is a structure composed of steel materials and is one of the main types of building structures. The structure is mainly composed of beam steels, steel columns, steel trusses and other components made of section steels and steel plates, and rust removal and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are adopted. Welds, bolts or rivets are usually used to connect between the components or parts. Because of its light self-weight and simple construction, it is widely used in large factories, stadiums, super high-rise buildings and other fields.

[0003] Using the propagation characteristics of high-frequency sound waves in materials to detect defects inside the weld is a relatively common method for detecting steel structure welds. When ultrasonic waves propagate in materials, they will be reflected, refracted and scattered when encountering defects, so as to judge the position, size and nature of the defects by receiving the reflected wave signals. It is applicable to the weld detection of various metal materials, especially for welds with larger thicknesses.

[0004] However, when using an ultrasonic probe to detect steel structure welds at present, since the detection staff needs to move the detection probe on the surface of the steel structure to be detected with one hand and also needs to pay attention to the changes in the data on the detector at all times, it is easy to miss the detection of the detection probe and miss the blurred data on the data instrument, thus affecting the accuracy of the detection data. Summary of the Invention

[0005] The purpose of the present invention is to provide a steel structure detection device for construction projects, which can not only reduce the operation difficulty of detecting steel structure welds, but also improve the accuracy of detection data.

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

[0007] A steel structure detection device for construction engineering, comprising: a track, which is arranged on the surface of the steel structure to be detected through a frame body. A chute is arranged inside the track along its advancing direction. A rack is arranged at a position above the chute inside the track, and a guide rod is arranged at a position below the chute inside the track; a detection assembly, which is arranged inside the track and can clamp a detection probe to advance along the track. The detection assembly includes: a fixed seat with guide sleeves at both ends. The guide sleeves are sleeved and slid on the guide rod; a driving seat with a first toothed ring sleeved on its outer periphery and a second toothed ring arranged on its inner periphery. The first toothed ring meshes with the rack, and by rotating the driving seat, the first toothed ring rolls on the rack; a plurality of driving shafts, which are arranged on the fixed seat through auxiliary parts and are used to drive the driving seat. A first gear meshing with the second toothed ring is arranged on the shaft body of the driving shaft; a negative pressure assembly, including: a plurality of negative pressure chambers, which are arranged inside the fixed seat and correspond to the positions of the driving shafts. An exhaust pipe is arranged on one side of each negative pressure chamber, and the air inlet end faces the steel structure to be detected; an impeller, which is rotatably arranged inside the negative pressure chamber and the shaft body is connected to the driving shaft; a sealing sleeve, which is sleeved on the bottom end of the fixed seat; a probe fixing cylinder, which is used to clamp the detection probe and is sleeved inside the fixed seat and is connected to the negative pressure chamber through a connecting piece.

[0008] Further, in order to increase the detection coverage area of the detection assembly, the track is a uniformly winding snake shape, so that the detection assembly carries the detection probe to detect the steel structure in a V shape on the surface of the steel structure to be detected. Through the V-shaped path detection, the detection probe moves on both sides of the weld on the surface of the steel structure, thereby covering a larger detection area and improving the detection efficiency. Moreover, through the V-shaped path detection, more defects in the weld, such as cracks, lack of fusion, lack of penetration, pores, slag inclusions, etc., can be detected. And because the reflection wave amplitude is higher when planar defects are perpendicular to the sound beam direction, for planar defects, such as lack of fusion, cracks, etc., the detection effect is better and it is easier to be discovered.

[0009] Further, the structure of the guide rod is consistent with the setting direction of the track, and the guide sleeve is made of a flexible hose material to adapt to the deformation of the guide rod, so that the fixed seat can smoothly pass through the arc section of the guide rod and ensure the stable travel of the detection assembly.

[0010] Further, a driving gear is sleeved on the driving shaft, and the driving gear is driven by an external motor. The motor is arranged on the fixed seat, and a motor gear meshing with the driving gear is arranged on the motor shaft. The motor is externally powered and driven, and by setting the rotation speed and start-stop time of the motor, it is easier to control the advancing direction and feeding speed of the detection assembly, so as to perform re-detection at some positions where the detection data is inaccurate. Through multiple repeated detections of the detection probe, the accuracy of the detection data is ensured.

[0011] Furthermore, the sealing sleeve is a folded rubber tube to adapt to the extrusion of the frame body, and the sealing sleeve with such a folded structure can maintain the stability of its structural shape through creases during extrusion.

[0012] Furthermore, since welding defects such as cracks and incomplete penetration may have different directions, and the surface of the seam may be uneven or have irregularities, which will have a great impact on the test results. In order to improve the detection sensitivity of micro defects and the accuracy of the detection structure, the detection device further includes a driving component for controlling the rotation of the probe fixing cylinder, so that the detection probe can change the detection angle and detect again in the detection area where it is difficult to give an accurate judgment.

[0013] Furthermore, the connecting piece includes: a slide rail, which is annular and sleeved on the outer periphery of the probe fixing cylinder; a slider, which is connected to the negative pressure chamber and slides in the slide rail. Through the connection of the connecting piece, the stability of the detection probe clamped in the probe fixing cylinder during rotation is ensured.

[0014] Furthermore, the driving component includes: a third toothed ring, which is sleeved on the outer periphery of the probe fixing cylinder through a third toothed ring mounting part. The third toothed ring mounting part is fixedly connected to the probe fixing cylinder, and the third toothed ring is slidably connected to the third toothed ring mounting part; a second gear, which is sleeved on the driving shaft and meshes with the third toothed ring through a control part, so as to make full use of the power on the driving shaft.

[0015] Furthermore, the control part includes: a fixing plate, which is fixedly connected to the probe fixing cylinder and is located below the third toothed ring; a telescopic rod, whose fixed end is connected to the fixing plate and whose telescopic end is connected to the third toothed ring. The telescopic rod is an electric telescopic rod, and through the electric control of the telescopic movement, it is easier to control the meshing relationship between the third toothed ring and the second gear.

[0016] Furthermore, the first tooth groove on the third toothed ring is opened on the outer ring and meshes with the second gear through the first tooth groove. The second tooth groove of the second toothed ring is opened on the inner ring and meshes with the first gear. When the driving shaft rotates, the third toothed ring and the second toothed ring rotate in opposite directions, so as to more conveniently observe whether the detection probe rotates by an angle.

[0017] During use, fix the detection probe in the probe fixing cylinder. Then, install the track on the surface of the steel structure to be detected through the frame body, and make the sealing sleeve of the detection component in an extruded state, tightly fitting the surface of the steel structure to be detected, so that the sealing sleeve closes the area around the detection probe. By rotating the drive shaft, the first gear drives the second toothed ring to rotate, and at the same time, the impeller located inside the negative pressure chamber rotates to evacuate the air in the sealing sleeve and discharge it through the exhaust pipe. While ensuring that the detection component advances along the track to detect the steel structure through the negative pressure component, ensure that the bottom end of the detection component is always close to the surface of the steel structure to be detected, and ensure that the detection probe always fits the surface of the steel structure to be detected, thereby improving the accuracy of the information collected by the detection probe and ensuring the accuracy of the judgment conclusion for the steel structure.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, the detection probe is installed in the probe fixing cylinder, and the driving seat provides the driving force, while the fixing seat improves the guiding function, enabling the detection device to advance along the track, thereby detecting the steel structure to be detected. The detection personnel only need to always pay attention to the display data on the data instrument, reducing the operation difficulty of the detection device. In the present invention, the frame body fixes the track on the surface of the steel structure to be detected and squeezes the sealing sleeve on the detection component, so that the sealing sleeve tightly fits on the steel structure surface. The drive shaft simultaneously drives the driving seat and the negative pressure component to work, thereby ensuring that while the detection component advances along the track to detect the steel structure, through the adsorption effect of the negative pressure component, ensure that the bottom end of the detection component is always close to the surface of the steel structure to be detected, so as to ensure that the detection probe always fits the surface of the steel structure to be detected, improving the accuracy of the information collected by the detection probe and ensuring the accuracy of the judgment conclusion for the steel structure.

[0020] 2. The track of the present invention is designed as a uniformly winding snake shape, so that the detection component carries the detection probe to detect the steel structure in a V shape on the surface of the steel structure to be detected. Through the V-shaped path detection, the detection probe moves on both sides of the weld on the steel structure surface, thus covering a larger detection area and improving the detection efficiency. Moreover, through the V-shaped path detection, more defects in the weld can be detected, such as cracks, lack of fusion, incomplete penetration, pores, slag inclusions, etc. And because the reflection wave amplitude is higher when the planar defect is perpendicular to the sound beam direction, for planar defects such as lack of fusion and cracks, the detection effect is better and it is easier to be discovered.

[0021] 3. The detection component of the present invention further includes a driving component for controlling the rotation of the probe fixing cylinder, so that the detection probe can change the detection angle and detect again in the detection area where it is difficult to give an accurate judgment. By rotating the detection probe during detection, the ultrasonic beam is incident on the weld from different angles, so as to more comprehensively detect defects in various directions. Moreover, on the uneven weld surface, the detection probe can better fit the weld surface, reducing the detection blind area caused by surface unevenness. In short, at the position where the detection result shows abnormality or is unclear, by rotating the detection probe, the ultrasonic beam can generate different reflections and refractions in the weld, thereby improving the detection sensitivity to micro defects and the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view structural schematic diagram of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the detection component of the present invention and the track position.

[0024] Figure 3 It is a schematic diagram of the internal structure of the detection component of the present invention.

[0025] Figure 4 It is a bottom view structural schematic diagram of the detection component of the present invention.

[0026] Figure 5 It is Figure 3 An enlarged view of the structural schematic diagram of area A in

[0027] Figure 6 It is Figure 3 An enlarged view of the structural schematic diagram of area B in

[0028] Wherein, 1. Track, 11. Frame body, 12. Rack, 13. Guide rod, 2. Detection component, 3. Fixed seat, 31. Guide sleeve, 4. Driving seat, 41. First toothed ring, 42. Second toothed ring, 5. Driving shaft, 51. First gear, 52. Driving gear, 53. Second gear, 6. Negative pressure component, 61. Negative pressure chamber, 62. Impeller, 63. Sealing sleeve, 64. Exhaust pipe, 7. Probe fixing cylinder, 71. Third toothed ring, 72. Fixed plate, 73. Telescopic rod, 74. Third toothed ring installation part, 8. Connecting piece, 81. Slide block, 82. Slide rail, 9. Auxiliary part DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following is combined with Figures 1 to 6, a detailed description of the specific embodiments of the present invention will be given. In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0030] The terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0031] It should be noted that the circuit connections of the motors and the appeal rods involved in the present invention all adopt conventional circuit connection methods and do not involve any innovations.

[0032] Embodiment

[0033] As Figure 1 shown, a steel structure detection device for construction engineering includes: a track 1 and a detection component moving along the track 1. The track 1 is arranged on the surface of the steel structure to be detected through a frame 11. It is worth noting that a suction cup is provided at one end of the frame 11 in contact with the steel structure to be detected, so that the frame 11 can be fixed on the surface of the steel structure to be detected. The steel structure detection device in this embodiment is applicable to the detection of steel structures with a flat surface, such as Figure 1 and 2 shown, the track 1 has two rails, and chutes are provided along the inner sides of both rails in their advancing directions. A rack 12 is provided at a position above the chute on the inner side of one of the rails, and the rack 12 is arranged in the same direction as the track 1. Guide rods 13 are provided at positions below the chutes on the inner sides of the two rails of the track 1, and the guide rods 13 are connected to the inner side surface of the track 1 through connecting rods; the detection component 2 is arranged inside the track 1 and can hold the detection probe and move along the track 1, such as Figure 2 and Figure 3 shown, the detection component 2 includes: a fixed seat 3, a driving seat 4, a plurality of driving shafts 5, a negative pressure component 6, and a probe fixing cylinder 7, such as Figure 2 shown, guide sleeves 31 are provided at both ends of the fixed seat 3, and the guide sleeves 31 are sleeved and slid on the guide rods 13. It is worth noting that a groove is provided on one side of the guide sleeve 31 close to the track 1 for the connecting rod connecting the guide rod 13 to pass through. The fixed seat 3 remains non-rotating and moves forward along the guide rod 13; such as Figure 3As shown, the bottom of the driving seat 4 is rotatably connected to the top of the fixed seat 3. A first toothed ring 41 is sleeved on the outer periphery of the driving seat 4, and a second toothed ring 42 is provided on the inner periphery. The first toothed ring 41 meshes with the rack 12. By rotating the driving seat 4, the first toothed ring 41 rolls on the rack 12, so that the driving seat 4 advances along the track 1 through its own rotation, and the stability of the advancement is maintained through the limitation of the fixed seat 3; As Figure 3 shown, a plurality of drive shafts 5 are vertically arranged on the fixed seat 3 through auxiliary members, and one end of the drive shaft 5 is aligned with the driving seat 4, and the other end is aligned with the fixed seat 3. The drive shaft 5 is driven by an external driving force and is used to drive the driving seat 4. Specifically, a first gear 51 meshing with the second toothed ring 42 is provided on the shaft body of the drive shaft 5. By rotating the drive shaft 5, the first gear 51 drives the second toothed ring 42 to rotate, thereby rotating the driving seat 4. It should be noted that, as Figure 2 shown, an eaves body is further provided on the outer peripheral side of the driving seat 4. The eaves body is annular, and the eaves body is located in the chute of the track 1. The chute plays a role in supporting and limiting the eaves body. Through the limiting cooperation between the eaves body and the chute, when the driving seat 4 rotates and advances, the second toothed ring 42 always remains meshed with the rack 12; As Figure 2 and Figure 3As shown, the negative pressure assembly 6 includes a plurality of negative pressure chambers 61. One side of each negative pressure chamber 61 is provided with an exhaust pipe 64. The other end of the exhaust pipe 64 penetrates through the fixing seat 3 and extends to the outside of the detection device. And the air inlet end of each negative pressure chamber 61 faces the steel structure to be measured. An impeller 62 is rotatably provided at a position near the bottom end of each negative pressure chamber 61. The plurality of negative pressure chambers 61 are arranged in a circular array with the center of the fixing seat 3 as the center inside the fixing seat 3. And the position of each negative pressure chamber 61 corresponds to the position of the drive shaft 5 one by one, so that the position of the drive shaft 5 corresponds to the position of the impeller 62. Connect the shaft body of the impeller 62 with the drive shaft 5, so that the drive shaft 5 rotates, and at the same time drives the impeller 62 and the drive seat 4. Thus, while ensuring that the detection assembly 2 advances along the track 1 to detect the steel structure, it is ensured that the bottom end of the detection assembly 2 is always close to the surface of the steel structure to be detected, and it is ensured that the detection probe always fits the surface of the steel structure to be detected. The probe fixing cylinder 7 is used to clamp the detection probe and is sleeved inside the fixing seat 3 and is connected to the negative pressure chamber 61 through a connecting member 8. It is worth noting that a clamping assembly, such as a three-jaw chuck, can be arranged inside the probe fixing cylinder 7 to achieve the purpose of being applicable to clamping detection probes of different sizes; the sealing sleeve 63 is sleeved at the bottom end of the fixing seat 3. During use, the detection probe is fixed in the probe fixing cylinder 7. Then, the track 1 is installed on the surface of the steel structure to be detected through the frame 11, and the sealing sleeve 63 of the detection assembly 2 is in a squeezed state and tightly fits the surface of the steel structure to be detected, so that the sealing sleeve 63 closes the area around the detection probe. Through the rotation of the drive shaft 5, the first gear 51 drives the second toothed ring 42 to rotate. At the same time, the impeller 62 located inside the negative pressure chamber 61 rotates, evacuates the air inside the sealing sleeve 63, and discharges it through the exhaust pipe 64. While ensuring that the detection assembly 2 advances along the track 1 to detect the steel structure through the negative pressure assembly 6, it is ensured that the bottom end of the detection assembly 2 is always close to the surface of the steel structure to be detected, and it is ensured that the detection probe always fits the surface of the steel structure to be detected. Thus, the accuracy of the information collected by the detection probe is improved, and the accuracy of the judgment conclusion on the steel structure is ensured.

[0034] In some embodiments, as Figure 1 shown, in order to increase the detection coverage area of the detection assembly 2, the track 1 is designed as a uniformly winding snake shape, so that the detection assembly 2 carries the detection probe to detect the steel structure in a V shape on the surface of the steel structure to be measured. Through the V-shaped path detection, the detection probe moves on both sides of the weld in the steel structure surface, so as to cover a larger detection area and improve the detection efficiency. And through the V-shaped path detection, more defects in the weld, such as cracks, lack of fusion, lack of penetration, pores, slag inclusions, etc., can be detected. And because the reflection wave amplitude is higher when the planar defect is perpendicular to the sound beam direction, for planar defects, such as lack of fusion, cracks, etc., the detection effect is better and it is easier to be found.

[0035] In some embodiments, in order to ensure the guiding effect of the guiding rod 13 on the fixed seat 3 and the stable effect of the detection assembly 2 moving along the track 1, the structure of the guiding rod 13 is arranged in the same direction as the track 1. And corresponding to the above-mentioned uniformly winding serpentine track 1, the guiding rod 13 has multiple arc segments, such as Figure 4 As shown, at this time, the guiding sleeve 31 is made of a hose material. It should be noted that the softness of the hose material means that it can deform according to the structural changes of the guiding rod 13, such as a corrugated pipe. And in order to reduce the friction between the guiding rod 13 and the guiding sleeve 31, the guiding sleeve 31 is made of a corrugated metal pipe. When necessary, the length of the guiding sleeve 31 needs to be shortened. Such a design is to enable the guiding sleeve 31 to adapt to the deformation of the guiding rod 13, so that the fixed seat 13 can smoothly pass through the arc segment of the guiding rod 13 and ensure the stable travel of the detection assembly 2.

[0036] In some embodiments, such as Figure 3 As shown, a driving gear 52 is sleeved on the driving shaft 5. The driving gear 52 is driven by an external motor. The motor is arranged on the fixed seat 3, and a motor gear meshing with the driving gear 52 is arranged on the motor shaft. It should be noted that the motor is driven by an external power supply, and the motor selected in this embodiment is a servo motor, which can set the rotation speed and start / stop time of the motor, so that it is easier to control the forward direction and feed speed of the detection assembly 2, and thus re-detect at some positions where the detection data is inaccurate. Through multiple repeated detections by the detection probe, the accuracy of the detection data is ensured.

[0037] In some embodiments, such as Figure 2 As shown, the sealing sleeve 63 is a folded rubber tube to adapt to the extrusion of the frame 11 on it, and such a folded structure of the sealing sleeve 63 can maintain the stability of its structural shape through the creases when being extruded.

[0038] In some embodiments, since welding defects such as cracks and incomplete penetration may have different directions, and the weld surface may be uneven or have concavities and convexities. Therefore, the detection assembly in this embodiment further includes a driving assembly for controlling the rotation of the probe fixing cylinder 7, so that the detection probe can change the detection angle and re-detect in the detection area where it is difficult to give an accurate judgment. By rotating the detection probe during detection, the ultrasonic beam is incident on the weld from different angles, so as to more comprehensively detect defects in various directions. And on the uneven weld surface, it can make the detection probe better fit the weld surface and reduce the detection blind area caused by surface unevenness. In short, at the position where the detection result shows abnormality or is unclear, by rotating the detection probe, the ultrasonic beam can produce different reflections and refractions in the weld, so as to improve the detection sensitivity to micro-defects and the accuracy of the detection result.

[0039] In some embodiments where the detection probe can rotate, in order to ensure the rotational connection relationship between the probe fixing cylinder 7 that holds the detection probe and the fixed seat 3, as Figure 5 shown, the connecting member 8 includes: a slide rail 82 and a slider 81. The slide rail 82 is annular and sleeved on the outer periphery of the probe fixing cylinder 7, and the opening direction of its slideway is arranged along the circumferential direction of the probe fixing cylinder 7; the slider 81 is fixedly connected to the negative pressure chamber 61 and slides in the slide rail 82. Since the negative pressure chamber 61 is fixedly connected to the inner wall of the fixed seat 3, through the cooperation of the slider 81 on the outer side wall of the negative pressure chamber 61 and the slide rail 82, not only can the probe fixing cylinder 7 be supported, but also the rotational connection relationship between the probe fixing cylinder 7 and the fixed seat 3 can be ensured, so that the probe fixing cylinder 7 holding the detection probe can stably rotate within the fixed seat 3.

[0040] In some embodiments, in order to make full use of the power on the drive shaft 5, as Figure 6 shown, the drive assembly includes: a third gear ring 71 and a second gear 53. The third gear ring 71 is sleeved on the outer periphery of the probe fixing cylinder 7 through a third gear ring mounting portion 74. The third gear ring mounting portion 74 is fixedly connected to the probe fixing cylinder 7, and the third gear ring 71 is slidably connected to the third gear ring mounting portion 74. Specifically, multiple vertical sliding grooves are formed on the outer peripheral surface of the third gear ring mounting portion 74, and multiple mounting blocks are provided on the inner ring surface of the third gear ring 71. The mounting blocks slide correspondingly in the vertical sliding grooves to ensure that the third gear ring 71 can only slide along the height direction of the third gear ring mounting portion 74; the second gear 53 is sleeved on the drive shaft 5 and meshes with the third gear ring 71 through a control member. The control member raises the position of the third gear ring 71 to make the third gear ring 71 mesh with the second gear 53. Thus, through the rotation of the drive shaft 5, the probe fixing cylinder 7 is simultaneously driven to rotate, and the third gear ring 71 can be lowered through the control member to separate the third gear ring 71 from the second gear 53, so that the probe fixing cylinder 7 maintains its normal stationary state.

[0041] In some embodiments, in order to facilitate the control of the height position of the third gear ring 71, that is, to facilitate the control of the meshing relationship between the third gear ring 71 and the second gear 53, the control member includes: a fixing plate 72 and a telescopic rod 73. The fixing plate 72 is fixedly connected to the probe fixing cylinder 7 and is located below the third gear ring 71. The fixed end of the telescopic rod 73 is connected to the fixing plate 72, and the telescopic end is connected to the third gear ring 71. The telescopic rod 73 is an electric telescopic rod and can be controlled to expand and contract through an external controller. At some positions where the detection data of the detection probe is blurred and inaccurate, the electric telescopic rod is driven to extend through the external controller to lift the third gear ring 71 and make the third gear ring 71 mesh with the second gear ring 53. Thus, through the rotation of the drive shaft 5, the probe fixing cylinder 7 holding the detection probe rotates.

[0042] In some embodiments, to ensure the rotational stability of the drive shaft 5, an auxiliary member 9 is configured on the drive shaft 5. The auxiliary member 9 includes a frame, bearings are provided at both the top and bottom of the frame, the drive shaft 5 is sleeved in the bearings, and the drive shaft 5 is stabilized by the two bearings. Moreover, the frame is fixedly connected to the fixed seat 3 and is slidably connected to the probe fixing cylinder 7 through a connecting member 8.

[0043] In some embodiments, such as Figure 3 and Figure 6 shown, the first tooth groove on the third toothed ring 71 is formed on the outer ring and meshes with the second gear 53 through the first tooth groove. The second tooth groove of the second toothed ring 42 is formed on the inner ring and meshes with the first gear 51 through the second tooth groove. When the drive shaft 5 rotates, the third toothed ring 71 and the second toothed ring 42 rotate in opposite directions, thus making it more convenient to observe whether the detection probe has rotated in angle.

[0044] The above-disclosed are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A steel structure detection device for construction engineering, characterized in that: include: A track (1) is arranged on the surface of a steel structure to be inspected through a frame (11); a slide groove is arranged on the inner side of the track (1) along its forward direction; a rack (12) is arranged on the inner side of the track (1) at a position above the slide groove; and a guide rod (13) is arranged on the inner side of the track (1) at a position below the slide groove; A detection assembly (2) is arranged in the track (1); the detection assembly (2) comprises: a fixed seat (3) having guide sleeves (31) at both ends, the guide sleeves (31) being sleeved and slidably mounted on the guide rod (13); a driving seat (4) having a first gear ring (41) sleeved on the outer periphery and a second gear ring (42) disposed on the inner periphery, the first gear ring (41) being meshed with the rack (12), and the first gear ring (41) rolling on the rack (12) by rotating the driving seat (4), thereby making the detection assembly (2) move forward along the track (1); a plurality of drive shafts (5) arranged on the fixed seat (3) through auxiliary parts, and used to drive the drive seat (4) A first gear (51) meshing with a second gear ring (42) is provided on the shaft body of the driving shaft (5); a negative pressure assembly (6) comprising: a plurality of negative pressure chambers (61) arranged on the inner side of the fixing seat (3) and corresponding to the position of the driving shaft (5); an exhaust pipe (64) is provided on one side of each negative pressure chamber (61), and an air inlet end faces the steel structure to be tested; an impeller (62) rotatably arranged in the negative pressure chamber (61), and the shaft body is connected to the driving shaft (5); a sealing sleeve (63) sleeved on the bottom end of the fixing seat (3); and a probe fixing tube (7) for clamping the detection probe, sleeved in the fixing seat (3), and connected to the negative pressure chamber (61) through a connecting piece (8).

2. A steel structure detection device for construction engineering according to claim 1, characterized in that: The track (1) is in a uniformly winding serpentine shape, so that the detection component (2) carries the detection probe to detect the steel structure in a V-shape on the surface of the steel structure to be detected.

3. A steel structure detection device for construction engineering according to claim 2, characterized in that: The structure of the guide rod (13) is consistent with the setting direction of the track (1), and the guide sleeve (31) is made of a hose material to adapt to the deformation of the guide rod (13).

4. A steel structure detection device for construction engineering according to claim 1, characterized in that: The driving shaft (5) is sleeved with a driving gear (52), and the driving gear (52) is driven by an external motor. The motor is arranged on a fixing seat (3), and a motor gear meshing with the driving gear (52) is arranged on the motor shaft.

5. A steel structure detection device for construction engineering according to claim 1, characterized in that: The sealing sleeve (63) is a folded rubber tube.

6. A steel structure detection device for construction engineering according to claim 1, characterized in that: It also comprises a driving assembly for controlling the rotation of the probe fixing cylinder (7), so that the detection probe can change the detection angle and detect again in the detection area where it is difficult to make an accurate judgment.

7. A steel structure detection device for construction engineering according to claim 6, characterized in that: The connecting member (8) comprises: a slide rail (82) which is annular and sleeved on the outer circumference of the probe fixing tube (7); and a sliding block (81) which is connected to the negative pressure chamber (61) and slides in the slide rail (82).

8. A steel structure detection device for construction engineering according to claim 7, characterized in that: The drive components include: A third toothed ring (71) is sleeved on the outer circumference of the probe fixing tube (7) through a third toothed ring mounting portion (74), the third toothed ring mounting portion (74) is fixedly connected to the probe fixing tube (7), and the third toothed ring (71) is slidably connected to the third toothed ring mounting portion (74); The second gear (53) is sleeved on the driving shaft (5) and meshes with the third gear ring (71) through a control member.

9. A steel structure detection device for construction engineering according to claim 8, characterized in that: The control element comprises: A fixing plate (72) fixedly connected to the probe fixing tube (7) and located below the third gear ring (71); A telescopic rod (73) has a fixed end connected to the fixed plate (72) and a telescopic end connected to the third gear ring (71).

10. A steel structure detection device for construction engineering according to claim 8, characterized in that: The tooth grooves of the third toothed ring (71) are arranged on the outer ring, and the tooth grooves of the second toothed ring (42) are arranged on the inner ring.

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