Building main body structure strength detection device

Abstract

The invention belongs to the technical field of strength detection, and particularly relates to a building main body structure strength detection device which comprises a movable chassis. A multi-stage lifting column is arranged at the top of the movable chassis; an electric push rod is arranged on one side of the top of the multi-stage lifting column; a rebound apparatus is arranged at one end, far away from the multi-stage lifting column, of the electric push rod; the multi-stage lifting column lifts the height and drives the electric push rod and the rebound apparatus to rise the height, so that the rebound apparatus is aligned with the to-be-detected position, at the moment, the electric push rod pushes the rebound apparatus to approach and extrude the to-be-detected position of the building, the rebound value of the surface of the concrete is measured, and the compressive strength of the concrete is calculated in combination with the carbonization depth of the concrete; therefore, the situation that a worker climbs to detect is avoided, the situation that the worker falls off is reduced, meanwhile, the worker can conveniently move to detect different positions, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of strength detection, in particular to a device for detecting the strength of a building main structure. Background Art

[0002] Concrete strength is an important indicator to measure the performance of the main structure of a building; common testing methods include static test, tensile test, splitting test, core drilling method, rebound method, ultrasonic method and vibration method, etc.; the rebound method uses a rebound hammer to measure the rebound value of the concrete surface, combined with the carbonation depth of the concrete, to calculate the compressive strength of the concrete; because the rebound method is easy to operate, it is suitable for rapid detection of concrete strength and is widely used in on-site testing.

[0003] A Chinese patent with announcement number CN218180567U discloses a building strength detection device for construction engineering, including a main body tube, a controller and a metal probe, the top of the main body tube is fixedly connected to the controller, a protective structure is arranged above the outer wall of the controller, a metal probe is arranged on one side inside the main body tube, a stabilizing structure is arranged inside the outer wall of the metal probe, and an anti-slip structure is arranged at the bottom end of the main body tube; the utility model realizes protection of the controller by providing a protective structure, installs the protective cover above the outer wall of the controller under the sliding structure of the slide groove and the protective cover, and fixes the position of the protective cover under the snap-fit ​​structure of the spring buckle and the positioning hole, so that the protective cover can shield the controller to a certain extent, so that the controller will not be obviously damaged by bumps during use of the device, thereby avoiding bumps and damage to the controller during use.

[0004] When using a rebound hammer for testing, workers are required to hold the rebound hammer and squeeze the concrete surface for testing; when it is necessary to test the beams of the main body of the building and the walls in higher areas, a ladder is required for high-altitude testing; not only is there a risk of falling, but it is also not conducive to movement, which increases the difficulty of testing.

[0005] To this end, the present invention provides a device for detecting the strength of a building main structure. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a building main structure strength detection device described in the present invention comprises a mobile chassis; a multi-stage lifting column is arranged on the top of the mobile chassis; an electric push rod is arranged on one side of the top of the multi-stage lifting column; a rebound tester is arranged on the end of the electric push rod away from the multi-stage lifting column; the multi-stage lifting column is raised to a height, driving the electric push rod and the rebound tester to rise in height, so that the rebound tester is aligned with the position to be detected, at this time, the electric push rod pushes the rebound tester to approach and squeeze the position to be detected of the building, measures the rebound value of the concrete surface, and calculates the compressive strength of the concrete in combination with the carbonization depth of the concrete; thereby avoiding the situation where staff members climb up for detection and reducing the situation where staff members fall. At the same time, it is convenient for staff members to move to detect different positions, thereby improving the efficiency of detection.

[0008] Preferably, a top plate is fixedly connected to the top of the multi-stage lifting column; a T-shaped bracket is bolted to the bottom surface of one side of the top plate; a lifting linear guide is fixedly connected to the side of the T-shaped bracket away from the multi-stage lifting column; a translation linear guide is fixedly connected to the side of the slider of the lifting linear guide away from the multi-stage lifting column; the electric push rod is arranged on the slider of the translation linear guide; the lifting linear guide and the translation linear guide cooperate so that the electric push rod and the rebound tester can move freely within the moving range of the lifting linear guide and the translation linear guide; thereby, the rebound tester can take multiple points for detection at the position to be detected, which is beneficial to improve the accuracy of the detection.

[0009] Preferably, a cross plate is bolted to the bottom surface of the T-shaped bracket; sliding rods are fixedly connected between the top surfaces at both ends of the cross plate and the bottom surfaces at both ends of the T-shaped bracket; a guide sleeve is slidably installed on the outer ring of the sliding rod; the guide sleeve is bolted to the translation linear guide rail; this not only improves the moving stability of the translation linear guide rail, but also improves the supporting strength of the translation linear guide rail, thereby improving the stability of the electric push rod pushing the rebound instrument.

[0010] Preferably, a U-shaped fixing plate is fixedly connected to a side of the slider of the translational linear guide rail away from the T-shaped bracket; a U-shaped sliding plate is slidably installed inside the U-shaped fixing plate; the electric push rod is arranged between the U-shaped fixing plate and the U-shaped sliding plate; a fixed clamping plate is fixedly connected to a side of the U-shaped sliding plate away from the T-shaped bracket; a plurality of elastic clamping strips are bolted on the fixed clamping plate; the rebound tester is installed between the fixed clamping plate and the elastic clamping strip; the rebound tester is clamped and fixed by the fixed clamping plate and the elastic clamping strip, which not only facilitates the staff to install and disassemble the rebound tester, but also facilitates the staff to replace different detection equipment.

[0011] Preferably, a plurality of pairs of rollers are provided on both sides of the top surface of the top plate; the outer rings of the rollers are provided with anti-skid grooves; and the stability of the movement of the detection device is improved by the rollers rolling against the roof of the building.

[0012] Preferably, a shell is fixedly connected to both sides of the top surface of the top plate; a slide seat is slidably installed inside the shell; a plurality of springs are evenly fixedly connected between the bottom surface of the slide seat and the inner bottom surface of the shell; a plurality of pairs of rollers are rotatably installed on both sides of the top of the slide seat; the rollers are located on the outside of the shell; shock absorption and buffering are performed by springs, thereby reducing the impact force on the detection device.

[0013] Preferably, a support seat is bolted to the middle of the top surface of the top plate; the support seat is arranged between the two shells; a plurality of screw holes are evenly arranged on the top surface of the support seat; a cone nail is threadedly installed inside the screw hole of the support seat; a plurality of notches are evenly arranged on the top outer circle of the cone nail; the cone nail on the top of the support seat contacts with the roof of the building, thereby improving the overall stability of the detection device and reducing the shaking and tipping of the detection device when the rebound tester is performing detection.

[0014] Preferably, a swivel seat is rotatably mounted on one end of the top surface of the mobile chassis; the bottom end of the multi-stage lifting column is fixedly connected to the top surface of the swivel seat; a locking bolt is fixedly connected to a side of the swivel seat away from the middle of the mobile chassis; a fixed folding plate is bolted to the end of the mobile chassis close to the swivel seat; a slot is provided on the top of the fixed folding plate; the locking bolt matches the slot; a positioning slot plate is fixedly connected to the end of the mobile chassis close to the swivel seat; the bottom of the fixed folding plate matches the top of the positioning slot plate.

[0015] Preferably, grooves are provided on both sides of a side of the fixed folding plate away from the swivel seat; a spur tooth plate is fixedly connected inside the groove; a pressure plate is provided on a side of the fixed folding plate away from the swivel seat; the pressure plate is sleeved on the outer ring of the locking bolt; spur tooth blocks are bolted on both ends of a side of the pressure plate close to the fixed folding plate; the spur tooth blocks are meshed with the spur tooth plates; the firmness of the locking bolt in the slot of the fixed folding plate is improved, and the situation of the locking bolt accidentally detaching from the slot is reduced, thereby improving the stability of the swivel seat and the multi-stage lifting column.

[0016] Preferably, a U-shaped fixing frame is fixedly connected to the middle of the top surface of the mobile chassis; the fixing frame matches the multi-stage lifting column; a rubber pad is fixedly connected to the inner bottom surface of the fixing frame; vertical grooves are provided on both sides of the fixing frame; the shaking of the multi-stage lifting column during transportation and storage of the detection device is reduced.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. A building main structure strength detection device described in the present invention comprises a mobile chassis, a multi-stage lifting column, an electric push rod and a rebound tester; when performing strength detection on beams and higher walls in the building main structure, the mobile chassis is controlled to move to the position to be detected, the multi-stage lifting column is raised to a height, and the electric push rod and the rebound tester are driven to rise to a height, so that the rebound tester is aligned with the position to be detected, at which time the electric push rod pushes the rebound tester to approach and squeeze the position to be detected of the building, measures the rebound value of the concrete surface, and calculates the compressive strength of the concrete in combination with the carbonization depth of the concrete; thereby avoiding the situation where staff members have to climb up for detection, reducing the situation where staff members fall, and at the same time, facilitating the staff members to move and detect different positions, thereby improving the detection efficiency.

[0019] 2. A building main structure strength detection device described in the present invention comprises a roller, a shell, a sliding seat, a spring, a support seat and a cone nail; when performing strength detection, the multi-stage lifting column is lifted to a height so that the roller contacts the roof of the building, the spring is compressed, and the sliding seat moves toward the inside of the shell so that the cone nail on the top of the support seat contacts the roof of the building, thereby improving the overall stability of the detection device and reducing the shaking and tipping of the detection device when the rebound tester is performing detection; when moving, the multi-stage lifting column is lowered to drive the cone nail to separate from the roof of the building, and at the same time, the spring is reset to push the sliding seat to move upward, so that the roller contacts the roof of the building, thereby facilitating the movement of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 is an exploded view of the present invention;

[0023] Figure 3 It is a three-dimensional diagram of the lifting linear guide rail and the translation linear guide rail in the present invention;

[0024] Figure 4 is an exploded view of the U-shaped sliding plate of the present invention;

[0025] Figure 5 is a three-dimensional diagram of the housing in the present invention;

[0026] Figure 6 is an exploded view of the housing in the present invention;

[0027] Figure 7 is a three-dimensional diagram of the support seat in the present invention;

[0028] Figure 8 is a three-dimensional diagram of the cone nail in the present invention;

[0029] Fig. 9 is a three-dimensional diagram of a fixed folding plate in the present invention;

[0030] Fig.10 is an exploded view of the fixed folding plate in the present invention;

[0031] In the figure: 1. Mobile chassis; 2. Multi-stage lifting column; 3. Electric push rod; 4. Rebound tester; 5. Top plate; 6. T-shaped bracket; 7. Lifting linear guide; 8. Translation linear guide; 9. Cross plate; 10. Sliding rod; 11. Guide sleeve; 12. U-shaped fixed plate; 13. U-shaped sliding plate; 14. Fixed clamping plate; 15. Elastic clamping strip; 16. Roller; 17. Shell; 18. Sliding seat; 19. Spring; 20. Support seat; 21. Conical nail; 22. Notch; 23. Swivel seat; 24. Locking bolt; 25. Fixed folding plate; 26. Slot; 27. Positioning slot plate; 28. Groove; 29. ​​Straight tooth plate; 30. Pressing plate; 31. Straight tooth block; 32. Fixed frame. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 4 As shown, a building main structure strength detection device according to an embodiment of the present invention comprises a mobile chassis 1; a multi-stage lifting column 2 is arranged on the top of the mobile chassis 1; an electric push rod 3 is arranged on one side of the top of the multi-stage lifting column 2; a rebound tester 4 is arranged at one end of the electric push rod 3 away from the multi-stage lifting column 2;

[0034] During operation, when strength testing is performed on beams and higher walls in the main structure of a building, the mobile chassis 1 is controlled to move to the position to be tested, and the multi-stage lifting column 2 is raised to a higher height, driving the electric push rod 3 and the rebound test hammer 4 to rise in height, so that the rebound test hammer 4 is aligned with the position to be tested. At this time, the electric push rod 3 pushes the rebound test hammer 4 to approach and squeeze the position to be tested of the building, measures the rebound value of the concrete surface, and calculates the compressive strength of the concrete in combination with the carbonization depth of the concrete; thereby avoiding the situation where staff members have to climb up for testing and reducing the possibility of staff members falling. At the same time, it is convenient for staff members to move to different positions for testing, thereby improving the efficiency of testing.

[0035] like Figures 1 to 4 As shown, a top plate 5 is fixedly connected to the top of the multi-stage lifting column 2; a T-shaped bracket 6 is bolted to the bottom surface of one side of the top plate 5; a lifting linear guide 7 is fixedly connected to the side of the T-shaped bracket 6 away from the multi-stage lifting column 2; a translation linear guide 8 is fixedly connected to the side of the slider of the lifting linear guide 7 away from the multi-stage lifting column 2; the electric push rod 3 is arranged on the slider of the translation linear guide 8;

[0036] During operation, the slider of the lifting linear guide 7 drives the translation linear guide 8 to move up and down, and the slider of the translation linear guide 8 drives the electric push rod 3 to move horizontally. The lifting linear guide 7 and the translation linear guide 8 cooperate to allow the electric push rod 3 and the rebound tester 4 to move freely within the moving range of the lifting linear guide 7 and the translation linear guide 8; thereby, the rebound tester 4 can take multiple points for detection at the position to be detected, which is beneficial to improve the accuracy of the detection.

[0037] like Figures 1 to 4 As shown, a horizontal plate 9 is bolted to the bottom surface of the T-shaped bracket 6; sliding rods 10 are fixedly connected between the top surfaces of both ends of the horizontal plate 9 and the bottom surfaces of both ends of the T-shaped bracket 6; a guide sleeve 11 is slidably mounted on the outer ring of the slide rod 10; the guide sleeve 11 is bolted to the translation linear guide rail 8;

[0038] During operation, when the slider of the lifting linear guide 7 drives the translation linear guide 8 to move up and down, the translation linear guide 8 drives the guide sleeve 11 to slide along the slide rod 10, which not only improves the movement stability of the translation linear guide 8, but also improves the supporting strength of the translation linear guide 8, thereby improving the stability of the electric push rod 3 pushing the rebound instrument 4.

[0039] like Figures 1 to 4 As shown, a U-shaped fixing plate 12 is fixedly connected to the side of the slider of the translation linear guide rail 8 away from the T-shaped bracket 6; a U-shaped sliding plate 13 is slidably installed inside the U-shaped fixing plate 12; the electric push rod 3 is arranged between the U-shaped fixing plate 12 and the U-shaped sliding plate 13; a fixing clamping plate 14 is fixedly connected to the side of the U-shaped sliding plate 13 away from the T-shaped bracket 6; a plurality of elastic clamping strips 15 are bolted to the fixing clamping plate 14; the rebound tester 4 is installed between the fixing clamping plate 14 and the elastic clamping strip 15;

[0040] During operation, after the rebound tester 4 is aligned with the position to be detected, the electric push rod 3 extends, pushing the U-shaped sliding plate 13 to slide from the inside of the U-shaped fixed plate 12, pushing the rebound tester 4 to approach and squeeze the position to be detected of the building for detection; the rebound tester 4 is clamped and fixed by the fixed clamping plate 14 and the elastic clamping strip 15, which is not only convenient for the staff to install and disassemble the rebound tester 4, but also convenient for the staff to replace different detection equipment.

[0041] like Figure 1 , Figure 2 and Figure 5 As shown, a plurality of pairs of rollers 16 are provided on both sides of the top surface of the top plate 5; and the outer rings of the rollers 16 are provided with anti-skid grooves;

[0042] Both sides of the top surface of the top plate 5 are fixedly connected with a shell 17; a slide seat 18 is slidably installed inside the shell 17; a plurality of springs 19 are evenly fixedly connected between the bottom surface of the slide seat 18 and the inner bottom surface of the shell 17; a plurality of pairs of rollers 16 are rotatably installed on both sides of the top of the slide seat 18; the rollers 16 are located outside the shell 17;

[0043] During operation, after the multi-stage lifting column 2 is lifted, the roller 16 on the top of the top plate 5 contacts the roof of the building, so that the spring 19 is compressed and the slide 18 moves toward the inside of the shell 17; the spring 19 is used for shock absorption and buffering, thereby reducing the impact force on the detection device; when it is necessary to move and change a new detection position, the mobile chassis 1 is controlled to move, and the roller 16 is used to roll in contact with the roof of the building, thereby improving the stability of the movement of the detection device.

[0044] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, a support seat 20 is bolted to the middle of the top surface of the top plate 5; the support seat 20 is arranged between the two shells 17; a plurality of screw holes are evenly provided on the top surface of the support seat 20; a cone nail 21 is threadedly installed inside the screw hole of the support seat 20; a plurality of notches 22 are evenly provided on the top outer ring of the cone nail 21;

[0045] During operation, when performing strength testing, the multi-stage lifting column 2 is raised to a higher height, so that the roller 16 contacts the roof of the building, the spring 19 is compressed, and the slide seat 18 moves toward the inside of the housing 17, so that the cone nail 21 on the top of the support seat 20 contacts the roof of the building, thereby improving the overall stability of the testing device and reducing the shaking and tipping of the testing device when the rebound tester 4 is testing;

[0046] When moving, the multi-stage lifting column 2 descends in height, driving the cone nail 21 to separate from the roof of the building. At the same time, the spring 19 is reset, pushing the slide 18 to move upward, so that the roller 16 contacts the roof of the building, thereby facilitating the movement of the detection device;

[0047] By providing the notch 22 on the outer ring of the cone nail 21 , it is convenient for workers to install and replace the cone nail 21 , which is beneficial to the maintenance of the workers.

[0048] like Figure 1 , Figure 2 , Fig. 9 and Fig.10As shown, a swivel seat 23 is rotatably mounted on one end of the top surface of the mobile chassis 1; the bottom end of the multi-stage lifting column 2 is fixedly connected to the top surface of the swivel seat 23; a locking bolt 24 is fixedly connected to a side of the swivel seat 23 away from the middle of the mobile chassis 1; a fixed folding plate 25 is bolted to one end of the mobile chassis 1 close to the swivel seat 23; a slot 26 is provided on the top of the fixed folding plate 25; the locking bolt 24 matches the slot 26; a positioning slot plate 27 is fixedly connected to one end of the mobile chassis 1 close to the swivel seat 23; the bottom of the fixed folding plate 25 matches the top of the positioning slot plate 27;

[0049] When working, transporting and storing, the swivel seat 23 rotates, driving the multi-stage lifting column 2 to rotate and horizontally place it on the top surface of the mobile chassis 1. At the same time, by removing the bolts on the T-shaped bracket 6, the lifting linear guide 7 and the translation linear guide 8 are removed, which effectively reduces the volume of the detection device, thereby facilitating transportation and storage;

[0050] When performing strength testing, the rotating seat 23 is rotated to drive the multi-stage lifting column 2 to rotate to a vertical state. At the same time, the rotating seat 23 drives the locking bolt 24 to be inserted into the slot 26 of the fixed folding plate 25, and the nut is installed on the locking bolt 24 to fix and lock the rotating seat 23 and the fixed folding plate 25, so that the multi-stage lifting column 2 is kept in a vertical state for fixing;

[0051] The fixed folding plate 25 is positioned and supported by the positioning groove plate 27 , thereby improving the installation strength and stability of the fixed folding plate 25 , thereby improving the fixing strength of the rotating seat 23 .

[0052] like Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, grooves 28 are provided on both sides of the fixed folding plate 25 away from the rotating seat 23; a straight tooth plate 29 is fixedly connected inside the groove 28; a pressing plate 30 is provided on the side of the fixed folding plate 25 away from the rotating seat 23; the pressing plate 30 is sleeved on the outer ring of the locking bolt 24; both ends of the pressing plate 30 close to the fixed folding plate 25 are bolted with straight tooth blocks 31; the straight tooth blocks 31 are meshed with the straight tooth plates 29;

[0053] During operation, after the nut is installed on the locking bolt 24, the pressure plate 30 is pushed close to the fixed folding plate 25 to push the spur gear block 31 to engage with the spur gear plate 29 inside the groove 28, thereby improving the firmness of the locking bolt 24 inside the slot 26 of the fixed folding plate 25 and reducing the possibility of the locking bolt 24 being detached from the slot 26, thereby improving the stability of the swivel seat 23 and the multi-stage lifting column 2.

[0054] like Figure 1 and Figure 2As shown, a U-shaped fixing frame 32 is fixedly connected to the middle of the top surface of the mobile chassis 1; the fixing frame 32 matches the multi-stage lifting column 2; a rubber pad is fixedly connected to the inner bottom surface of the fixing frame 32; vertical grooves are provided on both sides of the fixing frame 32;

[0055] During operation, the multi-stage lifting column 2 is rotated and placed horizontally on the top surface of the mobile chassis 1, so that the multi-stage lifting column 2 is inserted into the fixing frame 32, and the rubber pad is used for buffering and shock absorption. At the same time, the cross bar can be inserted into the vertical groove of the fixing frame 32 to press the multi-stage lifting column 2 tightly into the fixing frame 32, thereby reducing the shaking of the multi-stage lifting column 2 during transportation and storage of the detection device.

[0056] Working principle: During transportation and storage, the swivel seat 23 rotates, driving the multi-stage lifting column 2 to rotate and horizontally place it on the top surface of the mobile chassis 1. At the same time, by removing the bolts on the T-shaped bracket 6, the lifting linear guide 7 and the translation linear guide 8 are removed, which effectively reduces the volume of the detection device and facilitates transportation and storage;

[0057] When performing strength testing, the rotating seat 23 is rotated to drive the multi-stage lifting column 2 to rotate to a vertical state. At the same time, the rotating seat 23 drives the locking bolt 24 to be clamped into the slot 26 of the fixed folding plate 25, and the nut is installed on the locking bolt 24, pushing the pressure plate 30 to squeeze the fixed folding plate 25, pushing the spur gear block 31 to engage with the spur gear plate 29 inside the groove 28, thereby improving the firmness of the locking bolt 24 in the slot 26 of the fixed folding plate 25 and reducing the possibility of the locking bolt 24 accidentally detaching from the slot 26. The rotating seat 23 and the fixed folding plate 25 are fixed and locked, so that the multi-stage lifting column 2 is kept in a vertical state for fixing; the T-shaped bracket 6 is installed to one side of the top plate 5 with bolts, and the rebound tester 4 is clamped and fixed by the fixed clamping plate 14 and the elastic clamping strip 15;

[0058] The mobile chassis 1 is controlled to move to the position to be detected, and the multi-stage lifting column 2 is raised to a higher height, so that the roller 16 on the top of the top plate 5 contacts the roof of the building, so that the spring 19 is compressed, and the slide seat 18 moves toward the inside of the housing 17, so that the cone nail 21 on the top of the support seat 20 contacts the roof of the building, thereby improving the overall stability of the detection device;

[0059] The slider of the lifting linear guide 7 drives the translation linear guide 8 to move up and down, and the slider of the translation linear guide 8 drives the electric push rod 3 to move horizontally. The lifting linear guide 7 and the translation linear guide 8 cooperate to allow the electric push rod 3 and the rebound tester 4 to move freely within the moving range of the lifting linear guide 7 and the translation linear guide 8; the rebound tester 4 can take multiple points at the position to be detected for detection;

[0060] When it is necessary to move to a new detection position, the multi-stage lifting column 2 is lowered to drive the cone nail 21 to separate from the roof of the building. At the same time, the spring 19 is reset to push the slide 18 to move upward, so that the roller 16 contacts the roof of the building, and the mobile chassis 1 is controlled to move to a new detection position for detection;

[0061] This avoids the need for workers to perform height inspections and reduces the chances of workers falling. At the same time, it facilitates workers to move and inspect different locations, thereby improving inspection efficiency.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A building main structure strength detection device, characterized in that: The invention comprises a mobile chassis (1); a multi-stage lifting column (2) is arranged on the top of the mobile chassis (1); an electric push rod (3) is arranged on one side of the top of the multi-stage lifting column (2); and a rebound tester (4) is arranged at one end of the electric push rod (3) away from the multi-stage lifting column (2).

2. A building main structure strength detection device according to claim 1, characterized in that: The top end of the multi-stage lifting column (2) is fixedly connected to a top plate (5); a T-shaped bracket (6) is bolted to the bottom surface of one side of the top plate (5); a lifting linear guide rail (7) is fixedly connected to the side of the T-shaped bracket (6) away from the multi-stage lifting column (2); a sliding block of the lifting linear guide rail (7) is fixedly connected to a translation linear guide rail (8) on the side of the sliding block away from the multi-stage lifting column (2); and the electric push rod (3) is arranged on the sliding block of the translation linear guide rail (8).

3. A building main structure strength detection device according to claim 2, characterized in that: A transverse plate (9) is bolted to the bottom surface of the T-shaped bracket (6); sliding rods (10) are fixedly connected between the top surfaces at both ends of the transverse plate (9) and the bottom surfaces at both ends of the T-shaped bracket (6); a guide sleeve (11) is slidably mounted on the outer ring of the slide rod (10); the guide sleeve (11) is bolted to the translation linear guide rail (8).

4. A building main structure strength detection device according to claim 2, characterized in that: A U-shaped fixed plate (12) is fixedly connected to the side of the slider of the translation linear guide rail (8) away from the T-shaped bracket (6); a U-shaped sliding plate (13) is slidably installed inside the U-shaped fixed plate (12); the electric push rod (3) is arranged between the U-shaped fixed plate (12) and the U-shaped sliding plate (13); a fixed clamping plate (14) is fixedly connected to the side of the U-shaped sliding plate (13) away from the T-shaped bracket (6); a plurality of elastic clamping strips (15) are bolted to the fixed clamping plate (14); the rebound tester (4) is installed between the fixed clamping plate (14) and the elastic clamping strip (15).

5. A building main structure strength detection device according to claim 2, characterized in that: A plurality of pairs of rollers (16) are arranged on both sides of the top surface of the top plate (5); and anti-slip grooves are arranged on the outer rings of the rollers (16).

6. A building main structure strength detection device according to claim 5, characterized in that: Both sides of the top surface of the top plate (5) are fixedly connected with a shell (17); a slide seat (18) is slidably installed inside the shell (17); a plurality of springs (19) are evenly fixedly connected between the bottom surface of the slide seat (18) and the inner bottom surface of the shell (17); a plurality of pairs of rollers (16) are rotatably installed on both sides of the top of the slide seat (18); and the rollers (16) are located outside the shell (17).

7. A building main structure strength detection device according to claim 6, characterized in that: A support seat (20) is bolted to the middle of the top surface of the top plate (5); the support seat (20) is arranged between the two shells (17); a plurality of screw holes are evenly arranged on the top surface of the support seat (20); a cone nail (21) is threadedly installed inside the screw hole of the support seat (20); and a plurality of notches (22) are evenly arranged on the top outer ring of the cone nail (21).

8. A building main structure strength detection device according to claim 1, characterized in that: A swivel seat (23) is rotatably mounted on one end of the top surface of the mobile chassis (1); the bottom end of the multi-stage lifting column (2) is fixedly connected to the top surface of the swivel seat (23); a locking bolt (24) is fixedly connected to a side of the swivel seat (23) away from the middle of the mobile chassis (1); a fixed folding plate (25) is bolted to one end of the mobile chassis (1) close to the swivel seat (23); a slot (26) is provided on the top of the fixed folding plate (25); the locking bolt (24) matches the slot (26); a positioning slot plate (27) is fixedly connected to one end of the mobile chassis (1) close to the swivel seat (23); the bottom of the fixed folding plate (25) matches the top of the positioning slot plate (27).

9. A building main structure strength detection device according to claim 8, characterized in that: The fixed folding plate (25) is provided with grooves (28) on both sides of a side away from the rotating seat (23); a straight tooth plate (29) is fixedly connected inside the groove (28); a pressure plate (30) is provided on a side of the fixed folding plate (25) away from the rotating seat (23); the pressure plate (30) is sleeved on the outer ring of the locking bolt (24); straight tooth blocks (31) are bolted on both ends of a side of the pressure plate (30) close to the fixed folding plate (25); the straight tooth block (31) is meshed with the straight tooth plate (29).

10. A building main structure strength detection device according to claim 8, characterized in that: A U-shaped fixing frame (32) is fixedly connected to the middle of the top surface of the mobile chassis (1); the fixing frame (32) matches the multi-stage lifting column (2); a rubber pad is fixedly connected to the inner bottom surface of the fixing frame (32); and vertical grooves are provided on both sides of the fixing frame (32).

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