Multifunctional assembly type constructional engineering quality detection device

Abstract

The utility model relates to the related technical field of constructional engineering, in particular to a multifunctional assembly type constructional engineering quality detection device, which comprises a case; the building material comprises a machine box, a building material body is arranged at the top of the machine box, positioning frames are arranged on the four faces of the building material body, the positioning frames are slidably connected with the machine box, three first rotating shafts are fixedly connected to the interiors of the positioning frames, and rolling wheels are fixedly connected to the outer surfaces of the middles of the first rotating shafts. Under the matching action of the case, the building material body, the positioning frame, the first rotating shaft, the rollers, the portal frame and the linkage mechanism, the four sides of a building material can be clamped and positioned at the same time, and then the function of center positioning and clamping of the building material is achieved; and the building materials with different lengths and widths can be clamped and centrally positioned, so that the purpose of adapting to the building materials with different sizes is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of building engineering, specifically a multifunctional prefabricated building engineering quality testing device. Background Technology

[0002] Construction engineering refers to the physical engineering entity formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. Among them, "buildings" refer to projects with roofs, beams, columns, walls, foundations, and the ability to form internal spaces to meet people's needs for production, residence, study, and public activities. Construction engineering quality testing refers to the activities of testing the materials, components, equipment, and the quality and functionality of construction engineering projects in accordance with relevant national laws, regulations, mandatory engineering construction standards, and design documents to determine their quality characteristics. With the development of the economy, construction engineering quality testing has become increasingly stringent.

[0003] Utility model patent CN220473236U discloses a multifunctional prefabricated building engineering quality inspection device, belonging to the technical field of building engineering. It addresses the problems of inconvenient movement and positioning in existing technologies, which affect inspection efficiency, and the inability of general inspection devices to quickly locate the building materials to be inspected, thus impacting inspection efficiency. The device includes an inspection platform, a lifting device, and a positioning device. The lifting device includes a support plate, adjusting bolts, adjusting holes, an adjusting plate, a mounting base, wheels, and an adjusting groove. The bottom of the inspection platform is fixedly connected to the support plate, and the support plate has an adjusting groove inside, with the adjusting plate slidably connected inside the adjusting groove. The positioning device includes a protective shell, a motor, a transmission rod, a turntable, a connecting rod, a movable seat, a groove, a sliding sleeve, a clamping plate, a guide rod, an inspection arm, a hydraulic rod, and an inspection head. The bottom of the inspection platform is fixedly connected to the protective shell, and the motor is installed inside the protective shell. This utility model provides a multifunctional prefabricated building engineering quality inspection device with the advantages of convenient movement and positioning, and easy and quick fixing.

[0004] However, the above patent still has shortcomings: although the patent can clamp and position the building material on both sides, it cannot achieve the function of center positioning of the building material by clamping on both sides. As a result, after the device clamps and positions the building material, the building material still has a displacement phenomenon, which affects the detection effect of the building material. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multifunctional prefabricated building engineering quality inspection device to solve the problem mentioned in the background art that although the existing multifunctional prefabricated building engineering quality inspection device can clamp and position the building materials on both sides, it cannot achieve the function of center positioning of the building materials through clamping on both sides. As a result, after the device clamps and positions the building materials, the building materials still have a displacement phenomenon, which affects the inspection effect of the building materials.

[0006] The technical solution of this utility model is:

[0007] A multifunctional prefabricated building construction quality inspection device includes: a chassis; a building material body is mounted on the top of the chassis, and positioning frames are mounted on all four sides of the building material body. Each positioning frame is slidably connected to the chassis. Three first rotating shafts are fixedly connected inside each positioning frame, and rollers are fixedly connected to the outer surface of the middle portion of each first rotating shaft. A gantry frame is mounted on the top of the building material body. The chassis contains a linkage mechanism for controlling the positioning frames to clamp and center-position building material bodies of different sizes. Moving mechanisms for inspecting various parts of the building material body are mounted on both sides of the bottom of the gantry frame.

[0008] Preferably, the linkage mechanism includes:

[0009] The chassis is rotatably connected to a second rotating shaft, and a third rotating shaft is provided at the bottom of the second rotating shaft. The bottom end of the third rotating shaft is rotatably connected to the chassis, and rotating plates are fixedly connected to the outer surfaces of both the second and third rotating shafts.

[0010] Two fifth rotating shafts are fixedly connected to the opposite sides of the two rotating plates. A linkage rod is rotatably connected to the outer surface of each fifth rotating shaft. A fourth rotating shaft is rotatably connected to the two ends of the linkage rod away from the fifth rotating shaft. A moving block is fixedly connected to the top of each fourth rotating shaft. The top of each moving block is fixedly connected to the positioning frame.

[0011] A differential speed mechanism is provided between the two rotating plates to automatically adjust the positioning according to the width and length of the building material body.

[0012] Preferably, the differential mechanism includes: a differential gear disposed between the two rotating plates, the differential gear being rotatably connected to the third rotating shaft, a fixed frame being fixedly connected to the top of the differential gear, first bevel gears being rotatably connected to both sides of the fixed frame, a second bevel gear disposed between the two first bevel gears, the second bevel gear being fixed to the outer surface of the third rotating shaft, a third bevel gear being disposed on the top of the second bevel gear, the third bevel gear being fixed to the outer surface of the second rotating shaft, and both the second and third bevel gears meshing with the first bevel gears; a fourth bevel gear meshing with one side of the differential gear, an electromagnetic brake motor with a self-locking function being disposed on the side of the fourth bevel gear away from the differential gear, the electromagnetic brake motor being fixedly connected to the housing, and the fourth bevel gear being fixedly connected to the output end of the electromagnetic brake motor.

[0013] Preferably, each of the two sides of the movable block is provided with a slider, and each of the two sides of the slider is provided with a sliding groove. The slider is slidably connected to the chassis through the sliding groove, and the slider is fixedly connected to the positioning frame.

[0014] Preferably, the moving mechanism includes: a first screw threadedly connected to both sides of the bottom of the gantry frame, a fixing block rotatably connected to both ends of the first screw, and the fixing blocks being fixedly connected to the chassis; a dual-axis motor fixedly connected to one side of the chassis, a fifth bevel gear fixedly connected to both output ends of the dual-axis motor, a sixth bevel gear meshing with the side of the fifth bevel gear away from the dual-axis motor, and the two sixth bevel gears being fixedly connected to the first screw respectively; and a telescopic mechanism for detecting the building material body is provided inside the gantry frame.

[0015] Preferably, the telescopic mechanism includes: an adjusting block is provided inside the gantry frame; a second screw is threadedly connected inside the adjusting block; one end of the second screw is rotatably connected to the gantry frame; the other end of the second screw passes through the gantry frame and extends to the motor; the motor is fixedly connected to the gantry frame; the second screw is fixedly connected to the output end of the motor; sliding rods are provided on both sides of the second screw; both ends of the sliding rods are fixedly connected to the gantry frame; the adjusting block is slidably connected to the sliding rods; a hydraulic cylinder is fixedly connected to the bottom of the adjusting block; and a detection head is fixedly connected to the telescopic end of the hydraulic cylinder.

[0016] Preferably, each of the four corners of the bottom of the chassis is provided with a universal wheel with a braking function, and the universal wheel is fixedly connected to the chassis. A control box containing a battery is fixedly connected to one corner inside the chassis.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] Firstly, this utility model, through the coordinated action of the chassis, building material body, positioning frame, first rotating shaft, rollers, gantry frame, and linkage mechanism, can not only simultaneously clamp and position the four sides of the building material, thus achieving the function of center positioning and clamping the building material, but also can clamp and center position building materials of different lengths and widths, achieving the purpose of adapting to building materials of different sizes. This solves the problem that although the existing multi-functional prefabricated building engineering quality inspection device can clamp and position the building material on both sides, it cannot achieve the function of center positioning of the building material through clamping on both sides, resulting in the building material still having a displacement phenomenon after the device clamps and positions the building material, thus affecting the inspection effect of the building material.

[0019] Secondly, through the coordinated action of the chassis, building material body, positioning frame, first rotating shaft, rollers, gantry frame and moving mechanism, this utility model can detect various parts of the building material, which improves its practicality and solves the problem that the existing multi-functional prefabricated building engineering quality detection device cannot adjust the position of the detector according to the user's needs, resulting in a limited detection range and poor practicality. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a multifunctional prefabricated building engineering quality testing device according to the present invention.

[0021] Figure 2 This is a side sectional view of a multifunctional prefabricated building engineering quality inspection device according to the present invention.

[0022] Figure 3 This is a schematic diagram of the linkage mechanism structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the differential mechanism structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure between the movable frame and the slider of this utility model;

[0025] Figure 6 This is a schematic diagram of the moving mechanism structure of this utility model;

[0026] Figure 7 This is a schematic diagram of the telescopic mechanism of this utility model.

[0027] In the picture:

[0028] 1. Chassis; 2. Building material body; 3. Positioning frame; 4. First rotating shaft; 5. Roller; 6. Gantry frame; 7. Linkage mechanism; 8. Moving mechanism; 9. Second rotating shaft; 10. Third rotating shaft; 11. Rotating plate; 12. Fifth rotating shaft; 13. Linkage rod; 14. Fourth rotating shaft; 15. Moving block; 16. Differential mechanism; 17. Differential gear; 18. Fixed frame; 19. First bevel gear; 20. Second bevel gear; 21. Third bevel gear; 22. Fourth bevel gear; 23. Electromagnetic brake motor; 24. Slider; 25. Slide groove; 26. First screw; 27. Fixed block; 28. Dual-axis motor; 29. ​​Fifth bevel gear; 30. Sixth bevel gear; 31. Telescopic mechanism; 32. Adjusting block; 33. Second screw; 34. Motor; 35. Slide rod; 36. Hydraulic cylinder; 37. Detection head; 38. Universal wheel; 39. Control box. Detailed Implementation

[0029] 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.

[0030] Please see Figures 1 to 7 The present invention will describe the above technical solution in detail through the following embodiments:

[0031] A multifunctional prefabricated building construction quality inspection device includes: a chassis 1; a building material body 2 is mounted on the top of the chassis 1, and positioning frames 3 are mounted on all four sides of the building material body 2. The positioning frames 3 are slidably connected to the chassis 1, and three first rotating shafts 4 are fixedly connected inside each positioning frame 3. Rollers 5 are fixedly connected to the outer surface of the middle part of each first rotating shaft 4. A gantry frame 6 is mounted on the top of the building material body 2; a linkage mechanism 7 is installed inside the chassis 1 to control the positioning frames 3 to clamp and center-position building material bodies 2 of different sizes; and the bottom sides of the gantry frame 6 are equipped with... The moving mechanism 8, which detects various parts of the material body 2, allows the user to place the building material body 2 on top of the chassis 1. Then, the linkage mechanism 7 controls four positioning frames 3 to move towards the building material body 2. As the positioning frames 3 move, the first rotating shaft 4 drives the rollers 5. When the rollers 5 inside two of the positioning frames 3 contact the building material body 2, the other two positioning frames 3 continue to move towards the building material body 2, so that the rollers 5 inside the four positioning frames 3 contact the four sides of the building material body 2 respectively, achieving the purpose of clamping and center positioning of the building material body 2.

[0032] like Figure 3 As shown, the linkage mechanism 7 includes: a second rotating shaft 9 rotatably connected inside the housing 1; a third rotating shaft 10 is provided at the bottom of the second rotating shaft 9; the bottom end of the third rotating shaft 10 is rotatably connected to the housing 1; rotating plates 11 are fixedly connected to the outer surfaces of both the second rotating shaft 9 and the third rotating shaft 10; two fifth rotating shafts 12 are fixedly connected to the opposite sides of the two rotating plates 11; linkage rods 13 are rotatably connected to the outer surfaces of the fifth rotating shafts 12; fourth rotating shafts 14 are rotatably connected to the ends of the linkage rods 13 away from the fifth rotating shafts 12; moving blocks 15 are fixedly connected to the top ends of the fourth rotating shafts 14; and the top ends of the moving blocks 15 are fixedly connected to the positioning frame 3; a differential mechanism 16 is provided between the two rotating plates 11 to automatically adjust the positioning according to the width and length of the building material body 2. 6. Control the second rotating shaft 9 and the third rotating shaft 10 to rotate synchronously. While the second rotating shaft 9 and the third rotating shaft 10 rotate, they respectively drive the rotating plate 11. The rotating plate 11 drives the fifth rotating shaft 12 to rotate. While the fifth rotating shaft 12 rotates, it pulls the linkage rod 13. The linkage rod 13 pulls the moving block 15 through the fourth rotating shaft 14. The moving block 15 drives the positioning frame 3 to move towards the building material body 2. When the positioning frames 3 on both sides of the building material body 2 contact the building material body 2, the differential mechanism 16 continues to control the second rotating shaft 9 to rotate. The second rotating shaft 9 drives the rotating plate 11 on its surface to continue to rotate until the positioning frames 3 on both sides of the building material body 2 also contact the building material body 2. This achieves the purpose of clamping the four corners of the building material body 2 and center positioning.

[0033] like Figure 3 and Figure 4As shown, the differential mechanism 16 includes: a differential gear 17 disposed between two rotating plates 11, the differential gear 17 being rotatably connected to a third rotating shaft 10, a fixed frame 18 fixedly connected to the top of the differential gear 17, first bevel gears 19 rotatably connected to both sides of the fixed frame 18, a second bevel gear 20 disposed between the two first bevel gears 19, the second bevel gear 20 being fixed to the outer surface of the third rotating shaft 10, a third bevel gear 21 disposed on the top of the second bevel gear 20, the third bevel gear 21 being fixed to the outer surface of the second rotating shaft 9, and both the second bevel gear 20 and the third bevel gear 21 meshing with the first bevel gears 19; a fourth bevel gear 22 meshing with one side of the differential gear 17, an electromagnetic brake motor 23 with a self-locking function disposed on the side of the fourth bevel gear 22 away from the differential gear 17, the electromagnetic brake motor 23 being fixedly connected to the housing 1, and the output of the fourth bevel gear 22 and the electromagnetic brake motor 23 being... The end is fixedly connected, and the electromagnetic brake motor 23 is started. The output end of the electromagnetic brake motor 23 drives the fourth bevel gear 22. The fourth bevel gear 22 drives the differential gear 17 to rotate on the outer surface of the third rotating shaft 10. While the differential gear 17 rotates, it drives the fixed frame 18. The fixed frame 18 drives the first bevel gear 19 to rotate. While the first bevel gear 19 rotates, it drives the second bevel gear 20 and the third bevel gear 21 to rotate. While the second bevel gear 20 rotates, it drives the third rotating shaft 10. The third bevel gear 21 drives the second rotating shaft 9. When the third rotating shaft 10 and the second bevel gear 20 stop rotating, the first bevel gear 19 inside the fixed frame 18 rotates and, through the cooperation of the second bevel gear 20, also rotates. While the first bevel gear 19 rotates, it drives the third bevel gear 21 to rotate independently. While the third bevel gear 21 rotates, it drives the second rotating shaft 9 to continue to rotate.

[0034] like Figure 5 As shown, sliders 24 are provided on both sides of the movable block 15, and grooves 25 are provided on both sides of the sliders 24. The sliders 24 are slidably connected to the chassis 1 through the grooves 25. The sliders 24 are fixedly connected to the positioning frame 3 respectively, and can be limited by the positioning frame 3, so that the positioning frame 3 can slide flexibly inside the chassis 1.

[0035] like Figure 1 and Figure 6As shown, the moving mechanism 8 includes: a first screw 26 threadedly connected to both sides of the bottom of the gantry 6, and a fixing block 27 rotatably connected to both ends of the first screw 26, the fixing blocks 27 being fixedly connected to the housing 1; a dual-axis motor 28 fixedly connected to one side of the housing 1, a fifth bevel gear 29 fixedly connected to both output ends of the dual-axis motor 28, and a sixth bevel gear 30 meshing on the side of the fifth bevel gear 29 away from the dual-axis motor 28, the two sixth bevel gears 30 being fixedly connected to the first screw 26 respectively; a telescopic mechanism 31 for detecting the building material body 2 is provided inside the gantry 6. When the dual-axis motor 28 is started, the output end of the dual-axis motor 28 drives the fifth bevel gear 29, the fifth bevel gear 29 drives the sixth bevel gear 30 respectively, the sixth bevel gear 30 drives the first screw 26, the first screw 26 rotates through the cooperation of the fixing blocks 27, and the rotation of the first screw 26 drives the gantry 6 to move back and forth.

[0036] like Figure 7 As shown, the telescopic mechanism 31 includes: an adjusting block 32 is provided inside the gantry 6, and a second screw 33 is threadedly connected inside the adjusting block 32. One end of the second screw 33 is rotatably connected to the gantry 6, and the other end of the second screw 33 passes through the gantry 6 and extends to the motor 34. The motor 34 is fixedly connected to the gantry 6, and the second screw 33 is fixedly connected to the output end of the motor 34. Slide rods 35 are provided on both sides of the second screw 33, and both ends of the slide rods 35 are fixedly connected to the gantry 6. The adjusting block 32 is slidably connected to the slide rods 35. A hydraulic cylinder 36 is fixedly connected to the bottom of the adjusting block 32, and a detection head 37 is fixedly connected to the telescopic end of the hydraulic cylinder 36. When the motor 34 is started, the output end of the motor 34 drives the second screw 33 to rotate. While the second screw 33 rotates, it drives the adjusting block 32. The adjusting block 32 moves left and right inside the gantry 6 with the cooperation of the slide rods 35. When the hydraulic cylinder 36 is started, the telescopic end of the hydraulic cylinder 36 extends and retracts, driving the detection head 37.

[0037] like Figure 1 As shown, each of the four corners of the bottom of the chassis 1 is equipped with a caster wheel 38 with a braking function. The caster wheel 38 is fixedly connected to the chassis 1. A control box 39 with a battery inside is fixedly connected to one corner of the inside of the chassis 1, which improves the flexibility of the device and makes it convenient for users to move and fix the device.

[0038] Working principle: The electromagnetic brake motor 23 is started. The output of the electromagnetic brake motor 23 drives the fourth bevel gear 22, which in turn drives the differential gear 17 to rotate on the outer surface of the third rotating shaft 10. Simultaneously, the rotation of the differential gear 17 drives the fixed frame 18, which in turn drives the first bevel gear 19 to rotate. The rotation of the first bevel gear 19 simultaneously drives the second bevel gear 20 and the third bevel gear 21 to rotate. The rotation of the second bevel gear 20 drives the third rotating shaft 10, and the third bevel gear 21 drives the second rotating shaft 9. While shaft 9 and the third rotating shaft 10 rotate, they respectively drive the rotating plate 11. The rotating plate 11 drives the fifth rotating shaft 12 to rotate. While the fifth rotating shaft 12 rotates, it pulls the linkage rod 13. The linkage rod 13 pulls the moving block 15 through the fourth rotating shaft 14. The moving block 15 drives the positioning frame 3. While the positioning frame 3 moves, it drives the roller 5 to move towards the building material body 2 through the first rotating shaft 4. When the positioning frames 3 on both sides of the building material body 2 come into contact with the building material body 2, the third rotating shaft 10 and the second bevel gear 20 stop rotating. While the first bevel gear 19 inside the fixed frame 18 rotates, it also rotates through the cooperation of the second bevel gear 20. The rotation of the first bevel gear 19 drives the third bevel gear 21 to rotate independently. The rotation of the third bevel gear 21 drives the second rotating shaft 9 to continue rotating until the positioning frames 3 on both sides of the building material body 2 also contact the building material body 2. This achieves the purpose of clamping and centering the four corners of the building material body 2. It can not only clamp and position the four sides of the building material at the same time, thus achieving the function of centering and clamping the building material, but also clamp and center position building materials of different lengths and widths, so as to adapt to building materials of different sizes. This solves the problem that although the existing multi-functional prefabricated building engineering quality inspection device can clamp and position the building material on both sides, it cannot achieve the function of centering the building material through clamping on both sides. As a result, the building material still has a displacement phenomenon after the device clamps and positions the building material, thus affecting the inspection effect of the building material.

[0039] The dual-axis motor 28 is started, and its output drives the fifth bevel gear 29. The fifth bevel gear 29 drives the sixth bevel gear 30, which in turn drives the first screw 26. The first screw 26 rotates with the cooperation of the fixed block 27. While rotating, the first screw 26 drives the gantry frame 6 to move back and forth. The motor 34 is started, and its output drives the second screw 33 to rotate. While rotating, the second screw 33 drives the adjusting block 32. The adjusting block 32 moves left and right inside the gantry frame 6 with the cooperation of the sliding rod 35. The hydraulic cylinder 36 is started, and its extension and retraction drive the detection head 37. Through the cooperation of the dual-axis motor 28, the motor 34, and the hydraulic cylinder 36, the detection head 37 has a three-axis movement function, which can detect various parts of building materials. This improves practicality and solves the problem that existing multi-functional prefabricated building engineering quality inspection devices cannot adjust the position of the detector according to the user's needs, resulting in a limited detection range and poor practicality.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multifunctional prefabricated building construction quality inspection device, characterized in that, include: Chassis (1); The top of the chassis (1) is provided with a building material body (2), and the four sides of the building material body (2) are provided with positioning frames (3). The positioning frames (3) are slidably connected to the chassis (1). The interior of each positioning frame (3) is fixedly connected with three first rotating shafts (4). The outer surface of the middle part of each first rotating shaft (4) is fixedly connected with rollers (5). The top of the building material body (2) is provided with a gantry frame (6). The chassis (1) is equipped with a control positioning frame (3) and a linkage mechanism (7) for clamping and center positioning of building material bodies (2) of different sizes; The bottom sides of the gantry (6) are provided with moving mechanisms (8) for detecting various parts of the building material body (2).

2. The multifunctional prefabricated building engineering quality inspection device as described in claim 1, characterized in that: The linkage mechanism (7) includes: The chassis (1) is rotatably connected to a second rotating shaft (9), and a third rotating shaft (10) is provided at the bottom of the second rotating shaft (9). The bottom end of the third rotating shaft (10) is rotatably connected to the chassis (1). Rotating plates (11) are fixedly connected to the outer surfaces of the second rotating shaft (9) and the third rotating shaft (10). Two fifth rotating shafts (12) are fixedly connected to the opposite sides of the two rotating plates (11). The outer surface of each fifth rotating shaft (12) is rotatably connected to a linkage rod (13). The two ends of the linkage rod (13) away from the fifth rotating shaft (12) are rotatably connected to a fourth rotating shaft (14). The top end of each fourth rotating shaft (14) is fixedly connected to a moving block (15). The top end of each moving block (15) is fixedly connected to the positioning frame (3). A differential mechanism (16) is provided between the two rotating plates (11) to automatically adjust the positioning according to the width and length of the building material body (2).

3. The multifunctional prefabricated building engineering quality inspection device as described in claim 2, characterized in that: The differential mechanism (16) includes: A differential gear (17) is provided between the two rotating plates (11). The differential gear (17) is rotatably connected to the third rotating shaft (10). A fixed frame (18) is fixedly connected to the top of the differential gear (17). First bevel gears (19) are rotatably connected to both sides of the fixed frame (18). A second bevel gear (20) is provided between the two first bevel gears (19). The second bevel gear (20) is fixed to the outer surface of the third rotating shaft (10). A third bevel gear (21) is provided on the top of the second bevel gear (20). The third bevel gear (21) is fixed to the outer surface of the second rotating shaft (9). The second bevel gear (20) and the third bevel gear (21) both mesh with the first bevel gear (19). A fourth bevel gear (22) meshes with one side of the differential gear (17). An electromagnetic brake motor (23) with a self-locking function is provided on the side of the fourth bevel gear (22) away from the differential gear (17). The electromagnetic brake motor (23) is fixedly connected to the housing (1). The fourth bevel gear (22) is fixedly connected to the output end of the electromagnetic brake motor (23).

4. The multifunctional prefabricated building engineering quality inspection device as described in claim 2, characterized in that: The movable block (15) is provided with sliders (24) on both sides, and the sliders (24) are provided with grooves (25) on both sides. The sliders (24) are slidably connected to the chassis (1) through the grooves (25), and the sliders (24) are fixedly connected to the positioning frame (3).

5. The multifunctional prefabricated building engineering quality inspection device as described in claim 1, characterized in that: The moving mechanism (8) includes: The bottom sides of the gantry (6) are threaded with first screws (26), and the two ends of the first screws (26) are rotatably connected with fixing blocks (27), and the fixing blocks (27) are fixedly connected to the chassis (1). A dual-axis motor (28) is fixedly connected to one side of the chassis (1). A fifth bevel gear (29) is fixedly connected to both output ends of the dual-axis motor (28). A sixth bevel gear (30) meshes with the side of the fifth bevel gear (29) away from the dual-axis motor (28). The two sixth bevel gears (30) are fixedly connected to the first screw (26) respectively. The gantry (6) is equipped with a telescopic mechanism (31) for detecting the building material body (2).

6. The multifunctional prefabricated building engineering quality inspection device as described in claim 5, characterized in that: The telescopic mechanism (31) includes: An adjusting block (32) is provided inside the gantry frame (6). A second screw (33) is threadedly connected inside the adjusting block (32). One end of the second screw (33) is rotatably connected to the gantry frame (6). The other end of the second screw (33) passes through the gantry frame (6) and extends to the motor (34). The motor (34) is fixedly connected to the gantry frame (6). The second screw (33) is fixedly connected to the output end of the motor (34). Slide rods (35) are provided on both sides of the second screw (33). Both ends of the slide rods (35) are fixedly connected to the gantry frame (6). The adjusting block (32) is slidably connected to the slide rods (35). A hydraulic cylinder (36) is fixedly connected to the bottom of the adjusting block (32), and a detection head (37) is fixedly connected to the telescopic end of the hydraulic cylinder (36).

7. A multifunctional prefabricated building engineering quality testing device as described in claim 1, characterized in that: The bottom four corners of the chassis (1) are provided with casters (38) with braking function. The casters (38) are fixedly connected to the chassis (1). A control box (39) with a battery inside is fixedly connected to one corner of the chassis (1).

Images