An assembled prefabricated bridge and culvert component installation outer contour flatness detection device

Abstract

The application discloses an assembled prefabricated bridge and culvert component installation outer contour flushness detection device, which comprises a horizontal plate, a detection assembly is arranged on the horizontal plate, the detection assembly comprises a sliding rail arranged on the upper end of the horizontal plate, a sliding block is slidably connected to the sliding rail, an installation plate is arranged on the rear side of the sliding block, a double-shaft motor is arranged on the upper end of the installation plate, the lower end output shaft of the double-shaft motor penetrates through the installation plate and is fixedly connected with a first gear, two vertical plates are fixedly connected with the upper end of the horizontal plate, and a rack is fixedly connected with adjacent sides of the two vertical plates. The offset between the upper and lower walls is detected by the laser sensor, the flushness of the subsequent wall body is ensured, and during detection, the unqualified position can be automatically marked, so that subsequent workers can uniformly rectify, the detection efficiency is improved, and the amount of paint on the elastic rope is ensured by extruding the cylindrical sponge, so that the situation that the mark is not clear is avoided.

Description

Technical Field

[0001] This invention relates to the field of flatness testing technology, and in particular to a device for testing the flatness of the outer contour of prefabricated bridge and culvert components. Background Technology

[0002] In the field of construction engineering, the application of prefabricated components is becoming increasingly widespread. Ensuring the flatness of the outer contours of prefabricated components during installation is crucial, as it directly affects the overall appearance quality, structural stability, and the smooth progress of subsequent decoration work.

[0003] Currently, there are several pressing issues to be addressed in the inspection of the outer contour flatness of prefabricated components. On the one hand, traditional inspection methods often rely on manual measurement using simple tools, which is inefficient and susceptible to human error, making accuracy difficult to guarantee. On the other hand, even when unevenness is detected, there is a lack of effective automatic marking methods, making it difficult for staff to quickly and accurately locate and record the non-compliant areas, thus hindering subsequent rectification work. Furthermore, improper control over the materials and methods used for marking can easily lead to unclear markings, further complicating subsequent work.

[0004] Therefore, it is necessary to design a device for detecting the flatness of the outer contour of prefabricated bridge and culvert components to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for detecting the flatness of the outer contour of prefabricated bridge and culvert components. This device uses a laser sensor to detect the offset between the upper and lower walls, ensuring the flatness of the subsequent walls. During the detection process, it can automatically mark any non-compliant positions, facilitating subsequent rectification by staff and improving detection efficiency. Furthermore, by squeezing the cylindrical sponge, it ensures the amount of ink on the elastic rope, preventing unclear markings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for detecting the flatness of the outer contour of prefabricated bridge and culvert components includes a horizontal plate. A detection assembly is provided on the horizontal plate. The detection assembly includes a slide rail at the upper end of the horizontal plate, a slider slidably connected to the slide rail, an mounting plate mounted on the rear side of the slider, a dual-axis motor mounted on the upper end of the mounting plate, and a first gear fixedly connected to the lower output shaft of the dual-axis motor passing through the mounting plate. Two vertical plates are fixedly connected to the upper end of the horizontal plate, and a rack is fixedly connected to the adjacent sides of the two vertical plates. The rack meshes with the first gear. A mounting block is fixedly connected to the front side of the slider, a laser sensor is mounted on the front side of the mounting block, and a marking assembly is provided on the front side of the horizontal plate.

[0008] Preferably, the marking assembly includes a rectangular box disposed on the front side of the horizontal plate. A second electromagnet is embedded in the inner wall of the front side of the rectangular box. Two telescopic rods are fixedly connected to the rear side of the second electromagnet. The telescopic ends of the two telescopic rods are fixedly connected to a pulling block. The pulling block is elastically connected to the adjacent side of the second electromagnet by a third spring. A square block is fixedly connected to the front side of the pulling block. A rotating shaft is rotatably connected to the square block through a damping bearing. Connecting blocks are fixedly connected to the upper and lower sides of the rotating shaft. An inclined block is fixedly connected to each of the two connecting blocks. An elastic rope is fixedly connected to the inner top and inner bottom of the rectangular box. Triangular blocks are fixedly connected to the inner walls of the left and right sides of the rectangular box.

[0009] Preferably, a pushing assembly is provided on the front side of the horizontal plate. The pushing assembly includes a fixed box disposed on the front side of the slider. A pneumatic rod is fixedly connected to the left inner wall of the fixed box. A moving block is fixedly connected to the telescopic end of the pneumatic rod. An L-shaped block is fixedly connected to the right side of the moving block. The lower end of the L-shaped block is fixedly connected to the upper end of the rectangular box.

[0010] Preferably, a first magnetic block is fixedly connected to the opposite sides of the two inclined blocks, and a second magnetic block is fixedly connected to the inner walls of the left and right sides of the rectangular box. The adjacent sides of the two first magnetic blocks and the corresponding second magnetic blocks are repulsive due to their similar polarity.

[0011] Preferably, a cylindrical sponge is fixedly connected to the inner top of the rectangular box, the cylindrical sponge contains red pigment, a support block is fixedly connected to the right inner wall of the rectangular box, and an extrusion assembly is provided on the left inner wall of the rectangular box.

[0012] Preferably, the extrusion assembly includes a reciprocating box fixedly connected to the inner left wall of the rectangular box, a T-shaped block slidably connected inside the reciprocating box, an extrusion block on the left side of the T-shaped block, the T-shaped block being elastically connected to the inner left wall of the rectangular box by a first spring, a transmission rod vertically provided inside the rectangular box, and a cam provided on the transmission rod.

[0013] Preferably, the upper end of the transmission rod extends to the outside, the upper end of the fixed box is rotatably connected to a vertical rod, both the vertical rod and the transmission rod are provided with a second gear, and the upper output shaft of the dual-axis motor is connected to the vertical rod through a transmission assembly.

[0014] Preferably, a conductive block is fixedly connected to the inner top of the fixed box, a power source is provided inside the horizontal plate, and two contacts are provided on the right side of the movable block. The power source, the two contacts, the conductive block, and the second electromagnet form a circuit through wires.

[0015] Preferably, the right side of the T-shaped block is provided with an adjustment groove, the left inner wall of the adjustment groove is provided with a first electromagnet, a rectangular block is slidably connected inside the T-shaped block, the rectangular block and the adjacent side of the first electromagnet are elastically connected by a second spring, the right side of the rectangular block is fixedly connected to the pressing block, a counting sensor is fixedly connected to the inner top of the fixed box, and a contact block is fixedly connected to the left side of the moving block.

[0016] The present invention has the following beneficial effects:

[0017] 1. Compared with existing technologies, this prefabricated component installation outer contour flatness detection device, by setting up detection components, utilizes the cooperation of slide rail, slider, dual-axis motor, first gear and rack to realize automatic movement detection of laser sensor, which changes the situation of low efficiency and easy interference of human factors in traditional manual measurement, and greatly improves detection efficiency and accuracy.

[0018] 2. Compared with the existing technology, this device is equipped with a marking component. When a non-conforming position is detected, it can be automatically marked, avoiding the drawback of the existing technology that it is difficult to quickly and accurately mark the position when a problem is detected. This facilitates the unified rectification by the staff and further improves the convenience and efficiency of the overall inspection work.

[0019] 3. Compared with the existing technology, this device is equipped with a squeezing component in the marking component. By squeezing the cylindrical sponge, it ensures that there is enough pigment on the elastic rope, which solves the problem of unclear marking that may occur in the existing marking method, ensures the clarity of the marking, and provides clear and unambiguous instructions for subsequent rectification. Furthermore, by controlling the displacement of the rectangular block, the squeezing of the cylindrical sponge is controlled, thereby ensuring the amount of pigment on the elastic rope and avoiding excessive waste of pigment.

[0020] 4. Compared with existing technologies, the components of this device work together ingeniously, such as the collaborative work of the pushing component, marking component, and extrusion component, which realizes the automation and efficiency of a series of processes such as detection and marking, and greatly improves the efficiency of building assembly.

[0021] In summary, this prefabricated component installation outer contour flatness detection device, through its unique detection component design, enables automatic movement and detection by the laser sensor, improving detection efficiency and accuracy. Its marking component automatically marks non-conforming locations, facilitating subsequent rectification; the extrusion component ensures clear marking; and the collaborative work of all components automates and simplifies the detection and marking process, effectively solving the problems of low efficiency, inconvenient and unclear marking in existing technologies, and comprehensively improving the quality and efficiency of prefabricated component installation outer contour flatness detection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a prefabricated bridge and culvert component installation outer contour flatness detection device proposed in this invention.

[0023] Figure 2 for Figure 1 A structural diagram from another perspective;

[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the marker component;

[0025] Figure 4 for Figure 3 A structural diagram from another perspective;

[0026] Figure 5 for Figure 4 Enlarged structural diagram at point A;

[0027] Figure 6 This is a schematic diagram of the structure inside the rectangular box;

[0028] Figure 7 for Figure 6 Sectional view in;

[0029] Figure 8 for Figure 6 A schematic diagram of the internal components of the rectangular box.

[0030] In the diagram: 1. Horizontal plate, 2. Slide rail, 3. Rack, 4. Slider, 5. Mounting plate, 6. Dual-axis motor, 7. First gear, 8. Transmission assembly, 9. Fixing box, 10. Mounting block, 11. Laser sensor, 12. Vertical rod, 13. Transmission rod, 14. Second gear, 15. Rectangular box, 16. Pneumatic rod, 17. Moving block, 18. Counting sensor, 19. Contact block, 20. Conductive block, 21. Elastic rope, 22. Cylindrical sponge, 23. Support block, 24. Inclined block, 25. Reciprocating box, 26. First spring, 27. Cam, 28. T-block, 29. First electromagnet, 30. Second spring, 31. Rectangular block, 32. First magnetic block, 33. Second magnetic block, 34. Second electromagnet, 35. Telescopic rod, 36. Third spring, 37. Pulling block, 38. Triangular block, 39. Rotating shaft. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] Reference Figures 1-8A device for detecting the flatness of the outer contour of prefabricated bridge and culvert components (after a stage of construction of prefabricated components is completed, it is necessary to detect the flatness of the outer contour of the prefabricated components to ensure that there is no "misalignment" at the connection nodes of the upper and lower walls after the cavities and joints are filled with concrete; that is, this invention is mainly used to measure the misalignment between the upper and lower walls), includes a horizontal plate 1, which serves as the basic load-bearing component of the entire device, providing a platform for the installation and operation of other components. During detection, it is necessary to ensure that the front side of the horizontal plate 1 is flush with the front side of the upper wall. The horizontal plate 1 is equipped with a detection component, which includes a slide rail 2 set at the upper end of the horizontal plate 1, and the slide rail 2 provides guidance for the movement of the slider 4. To ensure smooth sliding along a specific direction, a slider 4 is slidably connected to the slide rail 2. A mounting plate 5 is installed on the rear side of the slider 4. A dual-axis motor 6 is installed on the upper end of the mounting plate 5. The lower output shaft of the dual-axis motor 6 passes through the mounting plate 5 and is fixedly connected to a first gear 7. Two vertical plates are fixedly connected to the upper end of the horizontal plate 1. A rack 3 is fixedly connected to the adjacent sides of the two vertical plates. The rack 3 meshes with the first gear 7, thus moving the slider 4. A mounting block 10 is fixedly connected to the front side of the slider 4. A laser sensor 11 is installed on the front side of the mounting block 10. The laser sensor 11 is used to detect the offset of the outer contour of the prefabricated component installation to determine the flatness. The horizontal plate 1 is equipped with... There is a controller. When the laser sensor 11 detects unevenness, it generates an electrical signal that is transmitted to the controller. The controller then controls the dual-axis motor 6 to stop running for a period of time and controls the pneumatic rod 16 to be in a stretched state for a period of time (the controller is programmed with a PLC program, which controls the pneumatic rod 16 to be in a stretched state during the period when the dual-axis motor 6 stops running). A marking assembly is provided on the front side of the horizontal plate 1. The marking assembly includes a rectangular box 15 located on the front side of the horizontal plate 1. A second electromagnet 34 is embedded in the inner wall of the front side of the rectangular box 15. Two telescopic rods 35 are fixedly connected to the rear side of the second electromagnet 34. The telescopic ends of the two telescopic rods 35 are fixedly connected to a pulling block 37. The pulling block 37 and the second electromagnet 35 are connected to the first electromagnet 35. The adjacent sides of the two electromagnets 34 are elastically connected by a third spring 36. A square block is fixedly connected to the front side of the pulling block 37. A rotating shaft 39 is rotatably connected to the square block through a damping bearing. This prevents the two inclined blocks 24 from rotating relative to each other after they rotate in opposite directions. Connecting blocks are fixedly connected to the upper and lower sides of the rotating shaft 39. Inclined blocks 24 are fixedly connected to the two connecting blocks. An elastic rope 21 is fixedly connected to the inner top and bottom of the rectangular box 15. The elastic rope 21 has a certain water absorption capacity and absorbs pigment inside. Triangular blocks 38 are fixedly connected to the inner walls of the left and right sides of the rectangular box 15. The rear sides of the two triangular blocks 38 are both inclined surfaces. This causes the two inclined blocks 24 to rotate in opposite directions when they move forward.

[0033] The horizontal plate 1 is provided with a pushing assembly on the front side. The pushing assembly includes a fixed box 9 set on the front side of the slider 4. A pneumatic rod 16 is fixedly connected to the inner left side of the fixed box 9. An air source is provided on the outside. The air inlet end of the pneumatic rod 16 is connected to the air source to control the pneumatic rod 16 to stretch and contract. A moving block 17 is fixedly connected to the telescopic end of the pneumatic rod 16. An L-shaped block is fixedly connected to the right side of the moving block 17. The lower end of the L-shaped block is fixedly connected to the upper end of the rectangular box 15.

[0034] The two inclined blocks 24 are fixedly connected to the opposite sides of the first magnetic block 32, and the inner walls of the left and right sides of the rectangular box 15 are fixedly connected to the second magnetic block 33. The adjacent sides of the two first magnetic blocks 32 and the corresponding second magnetic blocks 33 are like-pairs and repel each other. So after the two inclined blocks 24 are reset, under the repulsive force of the first magnetic block 32 and the second magnetic block 33, the two inclined blocks 24 rotate relative to each other, which makes it easier to pull the elastic rope 21 forward again.

[0035] The rectangular box 15 has a cylindrical sponge 22 fixedly connected to its inner top. The cylindrical sponge 22 absorbs red pigment, providing the pigment source for the elastic cord 21 marking. The cylindrical sponge 22 contains red pigment. A support block 23 is fixedly connected to the right inner wall of the rectangular box 15. A squeezing component is provided on the left inner wall of the rectangular box 15. The squeezing component squeezes the cylindrical sponge 22, causing the pigment to be squeezed out and absorbed onto the elastic cord 21, ensuring clear marking. The squeezing component includes components fixedly connected to the left inner wall of the rectangular box 15. The wall has a reciprocating box 25, and a T-shaped block 28 is slidably connected inside the reciprocating box 25. A squeezing block is provided on the left side of the T-shaped block 28. The squeezing block directly contacts the cylindrical sponge 22. The squeezing action causes the pigment to be squeezed out of the cylindrical sponge 22. The T-shaped block 28 is elastically connected to the inner wall of the left side of the rectangular box 15 by a first spring 26. A transmission rod 13 is vertically provided inside the rectangular box 15. A cam 27 is provided on the transmission rod 13. During the rotation, the contour of the cam 27 interacts with the T-shaped block 28, pushing the T-shaped block 28 to move left and right.

[0036] The upper end of the transmission rod 13 extends to the outside, and the upper end of the fixed box 9 is rotatably connected to the vertical rod 12. Both the vertical rod 12 and the transmission rod 13 are provided with a second gear 14. The upper output shaft of the dual-axis motor 6 is connected to the vertical rod 12 through the transmission assembly 8. The transmission assembly 8 includes a sprocket set on the output shaft of the dual-axis motor 6 on the vertical rod 12. The two sprockets are connected by chain drive.

[0037] The top of the fixed box 9 is fixedly connected to a conductive block 20. The horizontal plate 1 is equipped with a power source. The right side of the moving block 17 is equipped with two contacts. The power source, the two contacts, the conductive block 20 and the second electromagnet 34 form a circuit through wires. This circuit ensures that the second electromagnet 34 is energized or de-energized at the appropriate time, so as to control the movement of the marking component.

[0038] The T-shaped block 28 has an adjustment groove on its right side, and a first electromagnet 29 is located on the inner wall of the left side of the adjustment groove. A rectangular block 31, made of magnetic material, is slidably connected inside the T-shaped block 28. When the first electromagnet 29 is energized, it generates a repulsive force on the rectangular block 31. By changing the magnitude of the repulsive force on the rectangular block 31, the first electromagnet 29 adjusts the contact degree between the extrusion block and the cylindrical sponge 22. The adjacent sides of the rectangular block 31 and the first electromagnet 29 are elastically connected by a second spring 30. The right side of the rectangular block 31 is fixedly connected to the extrusion block. A counting sensor 18 is fixedly connected to the top of the inner wall of the fixed box 9. The counting sensor 18 is used for... The counting count provides a signal to the controller. A contact block 19 is fixedly connected to the left side of the moving block 17. The contact block 19 contacts the counting sensor 18, triggering the counting sensor 18 to generate an electrical signal. After each count, the controller controls the current through the first electromagnet 29 to increase, thereby increasing the amount of pressure on the cylindrical sponge 22. Thus, during the rotation of the cam 27, only the first pressure of the same degree will cause the pigment in the cylindrical sponge 22 to be squeezed out. In addition, the elastic coefficient of the second spring 30 is relatively large, so when the T-block 28 moves to the right, it will squeeze the cylindrical sponge 22 without causing the second spring 30 to be compressed.

[0039] The functional principle of this invention can be explained through the following operation: During detection, the dual-axis motor 6 is started, and its lower output shaft drives the first gear 7 to rotate. Since the first gear 7 meshes with the rack 3, and the rack 3 is fixed between two vertical plates, which are in turn fixed on the horizontal plate 1, the slider 4 slides smoothly along the slide rail 2 on the horizontal plate 1 under the transmission action of the first gear 7 and the rack 3. The mounting block 10 fixedly connected to the front of the slider 4 moves accordingly, and the laser sensor 11 mounted on the front of the mounting block 10 moves synchronously, thereby detecting the outer contour of the prefabricated component installation. The laser sensor 11 accurately measures the offset between the upper and lower walls to ensure the flatness of the subsequent walls.

[0040] When the laser sensor 11 detects an unqualified position, the push assembly starts working for a period of time, while the dual-axis motor 6 stops running for a period of time. The pneumatic rod 16 is installed on the inner left side of the fixed box 9. Its telescopic end pushes the moving block 17 to the right. The L-shaped block connected to the right side of the moving block 17 drives the rectangular box 15 to move. During the movement of the moving block 17 to the right, its two contacts on the right side contact the conductive block 20 at the top of the fixed box 9. At this time, the circuit formed by the power supply in the horizontal plate 1, the two contacts, the conductive block 20, and the second electromagnet 34 through the wire is connected, and the second electromagnet 34 is energized and generates magnetism.

[0041] The second electromagnet 34 generates magnetism, which attracts the pulling block 37, causing it to move backward and compressing the third spring 36. The square block connected to the front of the pulling block 37 is rotatably connected to the shaft 39 via a damping bearing. The inclined blocks 24 on the upper and lower connecting blocks of the shaft 39 move accordingly. Since the rear sides of the two inclined blocks 24 are in contact with each other, when the two inclined blocks 24 are pulled forward, the elastic rope 21 is pulled forward. During the forward movement of the two inclined blocks 24, the front sides of the two inclined blocks 24 come into contact with the two triangular blocks 38, causing the two inclined blocks 24 to rotate in opposite directions. The rotation of the two inclined blocks 24 in opposite directions causes the rear sides of the two inclined blocks 24 to be in relative position, releasing the pull on the elastic rope 21. Under the elastic force of the elastic rope 21 itself, the elastic rope 21 rebounds (the elastic rope 21 will not stop directly at the initial position, but will gradually tend to stop during multiple back-and-forth swings), thus causing the elastic rope 21 to contact the upper wall, thereby adhering the paint to the wall for marking.

[0042] After marking for a period of time, the controller will control the pneumatic rod 16 to retract and reset, which will cause the moving block 17 to move the rectangular box 15 to the left and reset. The two contacts on the moving block 17 will separate from the conductive block 20. At this time, the second electromagnet 34 will be de-energized. After the second electromagnet 34 is de-energized, under the elastic action of the third spring 36, the pulling block 37 will drive the two inclined blocks 24 to reset, so that the two first magnetic blocks 32 will approach the second magnetic block 33. Under the repulsive force of the second magnetic block 33, the two inclined blocks 24 will rotate relative to each other again, clamping the elastic rope 21 for subsequent marking. After the rectangular box 15 is reset, the dual-axis motor 6 will run again for detection.

[0043] In the initial state, the current passing through the first electromagnet 29 is small, resulting in a small repulsive force on the rectangular block 31. Also in the initial state, the two second gears 14 are in a meshing state. When the dual-axis motor 6 runs, the transmission rod 13 will drive the cam 27 to rotate. At this time, the rotation of the cam 27 will cause the T-shaped block 28 to move left and right. During this movement, the extrusion block does not contact the cylindrical sponge 22 and will not extrude any pressure on the cylindrical sponge 22.

[0044] After each marking is completed and the rectangular box 15 is reset, the contact block 19 will contact the counting sensor 18, which will then generate an electrical signal transmitted to the controller. The controller will control the current through the first electromagnet 29 to increase (the current of the first electromagnet 29 will increase once each time the counting sensor 18 counts), thereby increasing the repulsive force on the rectangular block 31. This will cause the extrusion block to continuously approach the cylindrical sponge 22, thereby pressing out the pigment and adsorbing it onto the elastic cord 21, thus ensuring the clarity of subsequent markings on the elastic cord 21.

[0045] It is worth mentioning that, under the same deformation, the cylindrical sponge 22 will only squeeze out pigment the first time, and subsequent compressions of the same degree will not squeeze out pigment. Therefore, even if the dual-axis motor 6 continues to run after the first compression, so that the compression block continues to squeeze the cylindrical sponge 22, no more pigment will be squeezed out, thus avoiding pigment waste.

[0046] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for detecting the flatness of the outer contour of prefabricated bridge and culvert components, comprising a horizontal plate (1), characterized in that: The horizontal plate (1) is provided with a detection component, which includes a slide rail (2) set at the upper end of the horizontal plate (1), a slider (4) slidably connected on the slide rail (2), an mounting plate (5) installed on the rear side of the slider (4), a dual-axis motor (6) installed at the upper end of the mounting plate (5), the lower output shaft of the dual-axis motor (6) passes through the mounting plate (5) and is fixedly connected to a first gear (7), two vertical plates are fixedly connected at the upper end of the horizontal plate (1), and a rack (3) is fixedly connected to the adjacent sides of the two vertical plates. The rack (3) meshes with the first gear (7), an mounting block (10) is fixedly connected to the front side of the slider (4), a laser sensor (11) is installed on the front side of the mounting block (10), and a marking component is provided on the front side of the horizontal plate (1). The marking assembly includes a rectangular box (15) set on the front side of the horizontal plate (1); the inner top and inner bottom of the rectangular box (15) are fixedly connected with an elastic rope (21); so that the elastic rope rebounds and contacts the upper wall, thereby adhering the paint to the wall for marking; The rectangular box (15) has a second electromagnet (34) embedded in the inner wall of the front side. Two telescopic rods (35) are fixedly connected to the rear side of the second electromagnet (34). The telescopic ends of the two telescopic rods (35) are fixedly connected to a pulling block (37). The pulling block (37) and the adjacent side of the second electromagnet (34) are elastically connected by a third spring (36). A square block is fixedly connected to the front side of the pulling block (37). A rotating shaft (39) is rotatably connected to the square block through a damping bearing. Connecting blocks are fixedly connected to the upper and lower sides of the rotating shaft (39). An inclined block (24) is fixedly connected to each of the two connecting blocks. Triangular blocks (38) are fixedly connected to the inner walls of the left and right sides of the rectangular box (15). The horizontal plate (1) is provided with a pushing assembly on the front side. The pushing assembly includes a fixed box (9) set on the front side of the slider (4). A pneumatic rod (16) is fixedly connected to the left inner wall of the fixed box (9). A moving block (17) is fixedly connected to the telescopic end of the pneumatic rod (16). An L-shaped block is fixedly connected to the right side of the moving block (17). The lower end of the L-shaped block is fixedly connected to the upper end of the rectangular box (15). The two inclined blocks (24) are fixedly connected to the opposite sides of the first magnetic block (32), and the inner walls of the left and right sides of the rectangular box (15) are fixedly connected to the second magnetic block (33). The two first magnetic blocks (32) and the adjacent sides of the corresponding second magnetic block (33) are repulsive to each other.

2. The device for detecting the flatness of the outer contour of prefabricated bridge and culvert components according to claim 1, characterized in that: A cylindrical sponge (22) is fixedly connected to the inner top of the rectangular box (15). The cylindrical sponge (22) contains red pigment. A support block (23) is fixedly connected to the right inner wall of the rectangular box (15). An extrusion assembly is provided on the left inner wall of the rectangular box (15).

3. The device for detecting the flatness of the outer contour of prefabricated bridge and culvert components according to claim 2, characterized in that: The extrusion assembly includes a reciprocating box (25) fixedly connected to the inner left wall of the rectangular box (15). A T-shaped block (28) is slidably connected inside the reciprocating box (25). An extrusion block is provided on the left side of the T-shaped block (28). The T-shaped block (28) is elastically connected to the inner left wall of the rectangular box (15) by a first spring (26). A transmission rod (13) is vertically provided inside the rectangular box (15). A cam (27) is provided on the transmission rod (13).

4. The device for detecting the flatness of the outer contour of prefabricated bridge and culvert components according to claim 3, characterized in that: The upper end of the transmission rod (13) extends to the outside. The upper end of the fixed box (9) is rotatably connected to the vertical rod (12). The vertical rod (12) and the transmission rod (13) are both provided with a second gear (14). The upper output shaft of the dual-axis motor (6) is connected to the vertical rod (12) through the transmission assembly (8).

5. The device for detecting the flatness of the outer contour of prefabricated bridge and culvert components according to claim 1, characterized in that: A conductive block (20) is fixedly connected to the top of the fixed box (9). A power source is provided inside the horizontal plate (1). Two contacts are provided on the right side of the moving block (17). The power source, the two contacts, the conductive block (20), and the second electromagnet (34) form a circuit through wires.

6. The device for detecting the flatness of the outer contour of prefabricated bridge and culvert components according to claim 3, characterized in that: The right side of the T-shaped block (28) is provided with an adjustment groove, and the left inner wall of the adjustment groove is provided with a first electromagnet (29). A rectangular block (31) is slidably connected inside the T-shaped block (28). The adjacent side of the rectangular block (31) and the first electromagnet (29) are elastically connected by a second spring (30). The right side of the rectangular block (31) is fixedly connected to the extrusion block. A counting sensor (18) is fixedly connected to the top of the fixed box (9). A contact block (19) is fixedly connected to the left side of the moving block (17).

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