A building steel structure deformation detection device for narrow space

Abstract

The utility model relates to building steel structure detection technical field discloses a building steel structure deformation detection device for narrow space, including casing and rear rod, the rear rod front end fixedly connected with the rotary table, the rotary table front end rotationally connected with the casing, the vertical installation of casing in has screw rod, the casing top fixedly connected with servo motor, servo motor output shaft fixedly connected with first gear, the screw rod top fixedly connected with second gear, first gear and second gear meshed connection, the screw rod outside is screwed with the screw block, the utility model discloses be provided with servo motor, first gear, second gear, screw rod, screw block and photoelectric range finder, solved the problem that artificial is difficult to measure point by point, positioning unstable in narrow space, realized accurate automation detection, has the operation convenient, high precision advantage in building steel structure wall surface detection.

Description

Technical Field

[0001] This utility model relates to the field of building steel structure testing technology, specifically a deformation detection device for building steel structures in narrow spaces. Background Technology

[0002] Deformation detection of steel structures is a crucial step in ensuring structural safety during construction and subsequent operation and maintenance. Common inspection sites include steel trusses, supporting beams, and steel plate walls. Some of these sites are characterized by narrow spaces and complex environments, making it difficult for inspectors to access them and posing a significant challenge to measuring deformation. These confined spaces often suffer from insufficient lighting, limited ventilation, and rough, uneven wall surfaces, making it difficult to guarantee the accuracy of traditional manual inspection methods.

[0003] Currently, the inspection of steel structure walls mostly relies on manual handheld measuring tools, such as vernier calipers, feeler gauges, or laser rangefinders, to estimate the overall deformation by measuring local areas. Due to the limitations imposed by human posture and measurement angles in confined spaces, the devices can only be moved manually, often making it impossible to achieve continuous inspection over a certain distance, which can easily lead to missed detections or insufficient accuracy.

[0004] Therefore, there is an urgent need for a deformation detection device for building steel structures in confined spaces to address the aforementioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a deformation detection device for building steel structures in narrow spaces, in order to solve the problem mentioned in the background art that, due to the limitations of human posture and measurement angle in narrow spaces, the device can only be moved manually, which often makes it impossible to achieve continuous detection over a certain distance, and easily leads to missed detections or insufficient accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a deformation detection device for building steel structures in narrow spaces, comprising a housing and a rear rod. A turntable is fixedly connected to the front end of the rear rod, and the housing is rotatably connected to the front end of the turntable. A screw is vertically installed inside the housing, and a servo motor is fixedly connected to the top end of the housing. A first gear is fixedly connected to the output shaft of the servo motor, and a second gear is fixedly connected to the top end of the screw. The first gear and the second gear are meshed together. A threaded block is screwed onto the outside of the screw, and a photoelectric rangefinder is installed at the front end of the threaded block. Wheel seats are welded to the four corners of the housing, and a fixed seat is fixed behind each wheel seat. A wheel frame is movably inserted through the fixed seat and the wheel seat. A steel wheel is installed at the front end of the wheel frame, and a spring abuts between the wheel seat and the fixed seat. A nut is installed at the fixed seat at the end of the wheel frame.

[0007] As a further technical solution of this utility model, the first gear and the second gear are the same size and are both bevel gears, and the second gear is installed on the top of the housing.

[0008] As a further technical solution of this utility model, the front end of the threaded block is welded with an installation groove, and the end of the photoelectric rangefinder is machined with an installation head, which is screwed into the installation groove.

[0009] As a further technical solution of this utility model, a guide rod parallel to the right side of the screw is provided, and the right side of the threaded block is sleeved and slidably connected to the outside of the guide rod.

[0010] As a further technical solution of this utility model, a telescopic rod is hinged to the bottom end of the shell, and a scraper is hinged to the other end of the telescopic rod. The scraper is L-shaped, and a hinge post is hinged between the top of the scraper and the shell.

[0011] As a further technical solution of this utility model, a drive cavity is provided inside the rear rod, a steering motor is fixed inside the drive cavity, a gear reducer is fixedly connected to the output shaft of the steering motor, the output shaft of the gear reducer passes through the turntable and is fixedly connected to the housing, a handle is fixedly connected to the top of the rear rod, a control panel is provided at the handle, and a detection indicator light is provided on the surface of the rear rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are: by setting up a servo motor, a first gear, a second gear, a screw, a threaded block and a photoelectric rangefinder, it solves the problem of manual point-by-point measurement and unstable positioning in narrow spaces, and realizes accurate automated detection. It has the advantages of convenient operation, no missed detection and high accuracy in the inspection of steel structure walls in buildings. By incorporating telescopic rods, scrapers, and hinged columns, the problem of wall contamination affecting detection is solved, ensuring the reliability of data acquisition and thus improving the accuracy and long-term stability of steel structure wall inspection in narrow spaces. By incorporating a steering motor, gear reducer, turntable, control panel, and handle, the device overcomes the limitation of only being able to perform wall-mounted inspections in a single direction. This enables multi-angle coverage, enhancing the flexibility and comprehensiveness of the inspection process. In the inspection of steel structure walls in buildings, this effectively reduces missed inspections and improves work efficiency. Attached Figure Description

[0013] Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2 This is a side view of the shell structure of this utility model; Figure 3 This is a front view schematic diagram of the photoelectric rangefinder of this utility model; Figure 4This is a front view structural diagram of the scraper of this utility model.

[0014] In the diagram: 1. Steel wheel; 2. Wheel frame; 3. Wheel seat; 4. Spring; 5. Fixed seat; 6. Nut; 7. Servo motor; 8. First gear; 9. Second gear; 10. Threaded block; 11. Photoelectric rangefinder; 12. Mounting head; 13. Mounting slot; 14. Screw; 15. Guide rod; 16. Housing; 17. Scraper; 18. Telescopic rod; 19. Hinge column; 20. Drive chamber; 21. Gear reducer; 22. Steering motor; 23. Detection indicator light; 24. Rear rod; 25. Control panel; 26. Handle; 27. Turntable. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides an embodiment of a deformation detection device for building steel structures in confined spaces, comprising a housing 16 and a rear rod 24. A turntable 27 is fixedly connected to the front end of the rear rod 24, and the housing 16 is rotatably connected to the front end of the turntable 27. A screw 14 is vertically installed inside the housing 16, and a servo motor 7 is fixedly connected to the top end of the housing 16. A first gear 8 is fixedly connected to the output shaft of the servo motor 7, and a second gear 9 is fixedly connected to the top end of the screw 14. The first gear 8 and the second gear 9 are meshed together. A threaded block 10 is screwed onto the outside of the screw 14. A photoelectric rangefinder 11 is installed at the front end of the housing 16. Wheel seats 3 are welded to the four corners of the housing 16. A fixed seat 5 is fixed behind each wheel seat 3. A wheel frame 2 is movably inserted through the fixed seat 5 and the wheel seat 3. A steel wheel 1 is installed at the front end of the wheel frame 2. A spring 4 abuts between the wheel seat 3 and the fixed seat 5. A nut 6 is installed at the fixed seat 5 at the end of the wheel frame 2. The first gear 8 and the second gear 9 are the same size and are both bevel gears. The second gear 9 is installed on the top of the housing 16. A guide rod 15 parallel to the screw 14 is provided on the right side. The right side of the threaded block 10 is sleeved on the outside of the guide rod 15 and slides. Specifically, such as Figure 1 , Figure 2 and Figure 3As shown, the servo motor 7, model MHMD042G1U, is mounted on the top of the housing 16. The output shaft of the servo motor 7 is fixedly connected to the first gear 8, which meshes with the second gear 9. The second gear 9 is welded to the top of the screw 14. Through gear transmission, the torque of the servo motor 7 is accurately transmitted to the screw 14. A threaded block 10 is screwed onto the outside of the screw 14. When the screw 14 rotates, the threaded block 10 moves up and down in the vertical direction. A photoelectric rangefinder 11 is fixedly installed at the front end of the threaded block 10. The photoelectric rangefinder 11 continuously scans the steel structure wall. The servo motor 7 adopts servo feedback control, which can accurately control the speed and angle, so that the photoelectric rangefinder 11 can move in the vertical direction at a stable speed, thereby realizing point-by-point scanning of the steel structure wall. The data collected by the photoelectric rangefinder 11 is fed back in real time through the control panel 25 to obtain the displacement and deformation of the wall at different height positions.

[0017] The threaded block 10 has a mounting groove 13 welded to its front end, and the photoelectric rangefinder 11 has a mounting head 12 machined at its end. The mounting head 12 is screwed into the mounting groove 13. Specifically, such as Figure 1 and Figure 3 As shown, the photoelectric rangefinder 11 is model OMRON ZX-LD100, with a range of 100mm and a resolution of up to 0.25μm. It uses the laser triangular reflection principle for non-contact ranging. The photoelectric rangefinder 11 is fixed to the mounting slot 13 by screwing the mounting head 12. It can still stably collect reflected signals even when the steel structure surface is rough or has oil or dust.

[0018] A telescopic rod 18 is hinged to the bottom of the housing 16, and a scraper 17 is hinged to the other end of the telescopic rod 18. The scraper 17 is L-shaped, and a hinge post 19 is hinged between the top of the scraper 17 and the housing 16. Specifically, such as Figure 1 and Figure 4 As shown, a telescopic rod 18 is hinged to the bottom of the housing 16, and an "L"-shaped scraper 17 is hinged to the other end of the telescopic rod 18. When the device moves along the steel structure wall, the scraper 17 always adheres to the surface of the wall, which can remove dust, mud or welding slag and other impurities on the detection path before the photoelectric rangefinder 11 scans, ensuring that the reflected signal received by the photoelectric rangefinder 11 is not interfered with.

[0019] A drive chamber 20 is provided inside the rear rod 24. A steering motor 22 is fixed inside the drive chamber 20. A gear reducer 21 is fixedly connected to the output shaft of the steering motor 22. The output shaft of the gear reducer 21 passes through the turntable 27 and is fixedly connected to the housing 16. A handle 26 is fixedly connected to the top of the rear rod 24. A control panel 25 is provided at the handle 26. A detection indicator light 23 is provided on the surface of the rear rod 24. Specifically, such as Figure 1 and Figure 2 As shown, the rear rod 24 has a drive cavity 20 inside, and a steering motor 22 is fixedly installed in the drive cavity 20. The steering motor 22 is model 90BYGH350B. Its output shaft is fixedly connected to the input end of the gear reducer 21. After gear reduction, the output end passes through the turntable 27 and is fixedly connected to the housing 16, thereby driving the housing 16 to rotate relative to the turntable 27. A handle 26 is set at the top of the rear rod 24. A control panel 25 is installed on the surface of the handle 26. The operator can operate the steering motor 22 through the control panel 25 to control the rotation angle of the housing 16, so that the photoelectric rangefinder 11 can detect in multiple directions. The detection indicator light 23 indicates the detection status.

[0020] Working principle: The operator holds the rear rod 24 tightly against the steel structure wall using the handle 26. The steel wheel 1, under the preload of the spring 4, presses against the wall surface, ensuring the device can move smoothly along the wall. The spring 4 has a compression margin when under force, automatically absorbing the impact of uneven walls on the device, thus ensuring the photoelectric rangefinder 11 maintains stable measurement even in narrow spaces. The servo motor 7 starts, and its output shaft drives the first gear 8 to rotate. The first gear 8 meshes with the second gear 9, thereby driving the screw 14 to rotate. During the rotation of the screw 14, the externally screwed threaded block 10 rises and falls vertically. The photoelectric rangefinder 11, installed at the front end of the threaded block 10, then performs a linear scan. The photoelectric rangefinder 11 uses the laser triangular reflection principle to achieve non-contact distance measurement. Driven by the threaded block 10, it scans the steel structure from top to bottom. The device continuously monitors the wall surface, collecting deformation data at various points in real time. The monitoring data is displayed on the control panel 25 mounted on the handle 26, allowing the operator to immediately assess the wall condition. As the device moves along the steel structure wall, the telescopic rod 18 hinged to the bottom of the housing 16 drives the "L"-shaped scraper 17 to remain in close contact with the wall. The scraper 17 cleans away dust, mud, welding slag, and other impurities as it moves forward, preventing these impurities from affecting the laser reflection signal of the photoelectric rangefinder 11 and ensuring monitoring accuracy. If multi-directional monitoring is required, the operator can start the steering motor 22 via the control panel 25. Its output shaft is connected to the gear reduction box 21, and the decelerated power is transmitted to the turntable 27, which in turn rotates the housing 16. By controlling the angle of the housing 16, the photoelectric rangefinder 11 can monitor the steel structure wall from multiple directions.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A deformation detection device for building steel structures in confined spaces, comprising a housing (16) and a rear rod (24), characterized in that: A turntable (27) is fixedly connected to the front end of the rear rod (24). A housing (16) is rotatably connected to the front end of the turntable (27). A screw (14) is vertically installed inside the housing (16). A servo motor (7) is fixedly connected to the top end of the housing (16). A first gear (8) is fixedly connected to the output shaft of the servo motor (7). A second gear (9) is fixedly connected to the top end of the screw (14). The first gear (8) and the second gear (9) are meshed together. The screw (14) is externally screwed. There is a threaded block (10), and a photoelectric rangefinder (11) is installed at the front end of the threaded block (10). Wheel seats (3) are welded to the four corners of the outer shell (16). A fixed seat (5) is fixed behind each wheel seat (3). A wheel frame (2) is movably passed through the fixed seat (5) and the wheel seat (3). A steel wheel (1) is installed at the front end of the wheel frame (2). A spring (4) abuts between the wheel seat (3) and the fixed seat (5). A nut (6) is installed at the fixed seat (5) at the end of the wheel frame (2).

2. The deformation detection device for building steel structures in confined spaces according to claim 1, characterized in that: The first gear (8) and the second gear (9) are the same size and are both bevel gears. The second gear (9) is mounted on the top of the housing (16).

3. The deformation detection device for building steel structures in confined spaces according to claim 1, characterized in that: The threaded block (10) has a mounting groove (13) welded to its front end, and the photoelectric rangefinder (11) has a mounting head (12) machined at its end. The mounting head (12) is screwed into the mounting groove (13).

4. The deformation detection device for building steel structures in confined spaces according to claim 1, characterized in that: The right side of the screw (14) is provided with a guide rod (15) parallel to it, and the right side of the threaded block (10) is sleeved and slides outside the guide rod (15).

5. A deformation detection device for building steel structures in confined spaces according to claim 1, characterized in that: The bottom end of the housing (16) is hinged to a telescopic rod (18), and the other end of the telescopic rod (18) is hinged to a scraper (17). The scraper (17) is "L" shaped, and the top of the scraper (17) is hinged to the housing (16) with a hinge post (19).

6. The deformation detection device for building steel structures in confined spaces according to claim 1, characterized in that: The rear rod (24) is provided with a drive cavity (20), and a steering motor (22) is fixed in the drive cavity (20). The output shaft of the steering motor (22) is fixedly connected to a gear reducer (21). The output shaft of the gear reducer (21) passes through the turntable (27) and is fixedly connected to the housing (16). A handle (26) is fixedly connected to the top of the rear rod (24). A control panel (25) is provided at the handle (26). A detection indicator light (23) is provided on the surface of the rear rod (24).

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