Steel plate cutting device for construction engineering construction

Abstract

This invention discloses a steel plate cutting device for building construction, specifically relating to the field of building construction technology. The device includes a main body with a lifting assembly at its lower side and a tilting assembly at its upper end. The tilting assembly includes two tilting frames, a support assembly at the middle of the two tilting frames, and clamping assemblies on both the front and rear sides of the two tilting frames. This invention establishes an integrated operation mode from steel plate loading, positioning, clamping to lifting, tilting, cutting, and cleaning. It eliminates the need for multiple processing steps for double-sided beveled cuts on the steel plate and requires minimal manual intervention. Utilizing the seamless linkage of each component, it significantly shortens the operation process, improves processing efficiency, and effectively ensures the cutting accuracy of the double-sided beveled cuts on the steel plate, avoiding the deviation risks associated with manual operation. It can fully meet the high-precision processing requirements for double-sided beveled cuts on steel plates in building construction.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a steel plate cutting device for building construction. Background Technology

[0002] In building construction, when steel plates are used in core components such as steel structure beams, columns, supports, and joint splicing, and require butt welding, double-sided bevel cuts must be made on both sides of the steel plate. This is because, in such splicing scenarios, double-sided bevel cuts effectively increase the welding contact area, ensuring uniform stress distribution at the joint, improving the sealing performance and structural stability of the weld joint, and preventing stress concentration, gaps, and other potential problems at the weld site. This, in turn, ensures the overall load-bearing capacity and service life of the steel structure, adapting to the installation and usage requirements under different stress scenarios in building construction. Furthermore, in scenarios such as cross-welding of steel plates with other components and sealed splicing, double-sided bevel cuts are also required on both sides of the steel plate to ensure welding accuracy and tightness, meeting the technical requirements of subsequent welding construction.

[0003] Existing double-sided bevel cutting technology for steel plates has many shortcomings and is difficult to adapt to the batch and high-precision processing requirements of building construction. Most cutting equipment lacks automatic flipping function. When manually flipping the steel plate, uneven force can easily cause the steel plate to shift and the positioning deviation, which in turn affects the alignment accuracy of the bevel cuts at both ends. Subsequent grinding and correction are required, which increases the number of workers. At the same time, the mode of cutting in stages and excessive manual intervention significantly reduces the work efficiency and makes it difficult to meet the actual needs of tight schedules and batch processing in building construction, thus restricting the construction progress and processing quality.

[0004] Chinese Patent Publication No. CN212122097U discloses a steel plate cutting device for construction engineering, including a base with two sets of collection boxes at the bottom. Multiple sets of through slots are evenly distributed on the upper surface of the base. The rear side of the base is fixedly connected to the front side of a fixed seat. The right side of the top of the fixed seat is screwed to the bottom of a first servo motor. The output end of the first servo motor is fixedly connected to the rear end of a first lead screw. This steel plate cutting device for construction engineering, through the first servo motor driving the first lead screw to rotate, and the cooperation between the first lead screw and the first lead seat, slider, and longitudinal guide rail, makes it easier for the laser generator to move back and forth. Through the second servo motor driving the second lead screw to rotate, and the cooperation between the second lead screw and the second lead seat and the transverse guide rail, it makes it easier for the laser generator to move left and right. The cooperation between the connecting pipe and the suction cup with the steel plate makes the collection of the steel plate convenient.

[0005] However, the above-mentioned device cannot process the double-sided oblique cuts on both sides of the steel plate during use. Summary of the Invention

[0006] The main objective of this invention is to provide a steel plate cutting device for construction engineering, which can effectively solve the problems in the background art.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A steel plate cutting device for construction engineering includes a main body, a lifting assembly on the lower side of the main body, a tilting assembly on the upper end of the lifting assembly, the tilting assembly including two tilting frames, a support assembly at the middle position of the two tilting frames, and clamping assemblies on the front and rear sides of the two tilting frames. The clamping assemblies include clamps. After the lifting assembly raises the four clamps to a certain position, the two clamps on the left and the two clamps on the right move simultaneously toward the tilting frame on the same side. A cleaning assembly is provided on the upper side of the lifting assembly.

[0008] Preferably, the main body of the device includes a processing table and a base. The lower end of the processing table is fixedly connected to the base. Slide rails are fixedly connected to both the front and rear sides of the upper end of the processing table. The upper ends of the two slide rails are slidably connected to the cutting device body.

[0009] Preferably, the lifting assembly includes two hydraulic devices fixedly installed on the upper end of the base. The output ends of the two hydraulic devices are fixedly connected to a U-shaped lifting seat. Sliding grooves are provided on both the left and right sides of the processing table. Limiting rods are fixedly connected to the inner surfaces of the two sliding grooves, and sliding blocks are slidably connected to the outer surfaces of the two limiting rods.

[0010] Preferably, the flipping assembly includes two rotating rods, with opposite ends of the two rotating rods rotatably connected to a sliding block on the same side. A belt drive structure is fixedly connected to the outer surface of the rotating rod on the left side, and a rotating shaft is rotatably connected to the right end of the sliding block on the left side. A one-way rotating shaft is fixedly connected to the outer surface of the rotating shaft, and a gear is rotatably connected to the outer surface of the one-way rotating shaft. The end of the belt drive structure away from the rotating rod is fixedly connected to the rotating shaft.

[0011] Preferably, a rack is fixedly connected to the left side wall of the inner surface of the processing table, the gear meshes with the rack, the ends of the two rotating rods that are close to each other are fixedly connected to the flipping frame, the front and rear ends of the two flipping frames are fixedly connected with locking blocks, and the inner surface of the processing table is provided with locking slots that are adapted to the four locking blocks respectively.

[0012] Preferably, the support assembly includes limiting grooves on the outer surfaces of two flipping frames. Each limiting groove consists of a parallel groove and an inclined groove. The inner surfaces of the two limiting grooves are slidably connected to two support rods. When the flipping frame flips counterclockwise, the two support rods will slide to the front end of the inclined groove of the limiting groove at the same time, so as to avoid obstructing the cutting of the flipped steel plate.

[0013] Preferably, the clamping assembly includes two sliding grooves on the front and rear sides of the two flipping frames, and springs are provided on the inner surfaces of the four sliding grooves. One end of each of the four springs is fixedly connected to a movable block, and the sides of the movable blocks on the same side that are close to each other are fixedly connected to the clamp.

[0014] Preferably, each of the movable blocks on the same side has an elastic telescopic rod fixedly connected to one end that is far apart from the other. The inner surface of the processing table has four guide grooves that are adapted to the elastic telescopic rods. The lower ends of the four guide grooves are smoothly connected to the plane of the processing table. The grooves gradually deepen from the beginning to the inside, so that the elastic telescopic rod can slide smoothly into the guide groove area along the gradual section of the guide groove. The sliding process is smooth and unobstructed, and it can also slide out smoothly along the original path.

[0015] Preferably, the cleaning assembly includes a pressure plate fixedly connected to the lower end of the U-shaped lifting seat, an airbag fixedly connected to the upper end of the base, air supply pipes fixedly connected to both ends of the airbag, and air inlets fixedly connected to the ends of the two flipping frames that are close to each other.

[0016] Preferably, the ends of the two air supply tubes furthest from the airbag are connected to the sliding block on the same side, and the ends of the two air supply tubes furthest from the airbag pass through the rotating rod on the same side and are fixedly connected to the air inlet at the corresponding position.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention fundamentally solves many problems associated with traditional double-sided bevel cutting of steel plates through the cooperation of various components. It constructs an integrated operation mode from steel plate loading, positioning, clamping to lifting, flipping, cutting, and cleaning. It eliminates the need for multiple processing steps for the double-sided bevel of the steel plate and requires minimal manual intervention. The seamless linkage of various components significantly shortens the operation process and improves processing efficiency. At the same time, it effectively ensures the cutting accuracy of the double-sided bevel of the steel plate, avoids the deviation risks caused by manual operation, and the real-time cleaning function reduces dust pollution in the workshop. Overall, it not only solves the drawbacks of the disconnect between processes in traditional equipment, but also achieves simultaneous improvement in processing accuracy, operation efficiency, and environmental protection, and can fully meet the high-precision processing requirements of double-sided bevel cutting of steel plates in construction.

[0018] 2. This invention solves the problems of disconnected clamping and flipping actions and the need for multiple cuts of steel plates with double-sided bevels by coordinating lifting, flipping, and support components. During the lifting process of the steel plate, the clamping component is driven to position and clamp the steel plate synchronously, while the flipping component uses the lifting power to automatically flip the steel plate. This reduces labor intensity and avoids the risk of steel plate displacement and equipment collision caused by manual flipping, ensuring the continuity of double-sided bevel cutting. The cooperation between the flipping and support components allows the support rod to automatically slide and avoid obstacles when the steel plate is flipped for reverse bevel cutting, ensuring smooth double-sided bevel cutting operations. At the same time, the lifting action can drive the cleaning component to follow the double-sided bevel cutting area of ​​the steel plate in real time to blow air for cleaning, solving the problem of tedious slag cleaning at the cut. Overall, this invention solves the drawbacks of traditional steel plate cutting that requires multiple double-sided bevel cuttings and disconnected processes, improving work efficiency and equipment stability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of another overall structural state of the present invention; Figure 3 This is a schematic diagram of the lifting assembly of the present invention; Figure 4 This is a schematic diagram of the processing table of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the diagram; Figure 6 This is a partial structural schematic diagram of the flipping component of the present invention; Figure 7 This is a schematic diagram of the structure of the support component of the present invention; Figure 8 This is a schematic diagram of the clamping assembly of the present invention; Figure 9 This is a schematic diagram of another state structure of the clamping assembly of the present invention.

[0020] In the diagram: 1. Main body of the device; 11. Processing table; 12. Base; 13. Slide rail; 14. Cutting device body; 2. Lifting assembly; 21. Hydraulic device; 22. U-shaped lifting seat; 23. Sliding groove one; 24. Limiting rod; 25. Sliding block; 3. Tilting assembly; 31. Rotating rod; 32. Belt drive structure; 33. Rotating shaft; 34. One-way rotating shaft; 35. Gear; 36. Rack; 37. Tilting frame; 38. Locking block; 39. Locking groove; 4. Support assembly; 41. Limiting groove; 42. Support rod; 5. Clamping assembly; 51. Sliding groove two; 52. Spring; 53. Movable block; 54. Fixture; 55. Elastic telescopic rod; 56. Guide groove; 6. Cleaning assembly; 61. Pressure plate; 62. Airbag; 63. Air supply pipe; 64. Air inlet. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Example 1, as Figure 1-3 , Figure 8 As shown, a steel plate cutting device for construction engineering includes a main body 1. A lifting assembly 2 is provided on the lower side of the main body 1. A flipping assembly 3 is provided on the upper end of the lifting assembly 2. The flipping assembly 3 includes two flipping frames 37. A support assembly 4 is provided in the middle of the two flipping frames 37. Clamping assemblies 5 are provided on both the front and rear sides of the two flipping frames 37. The clamping assembly 5 includes clamps 54. After the lifting assembly 2 drives the four clamps 54 to rise to a certain position, the two clamps 54 on the left and the two clamps 54 on the right will move simultaneously toward the flipping frame 37 on the same side. A cleaning assembly 6 is provided on the upper side of the lifting assembly 2.

[0023] In the operation of this embodiment, many problems existing in traditional double-sided bevel cutting of steel plates are fundamentally solved. It constructs an integrated operation mode from steel plate loading, positioning, clamping to lifting, flipping, cutting and cleaning. There is no need to process the double-sided bevel of the steel plate in stages or to have too much manual intervention. By utilizing the seamless linkage of various components, the operation process is greatly shortened and the processing efficiency is improved. At the same time, the cutting accuracy of the double-sided bevel of the steel plate is effectively guaranteed, and the deviation risk caused by manual operation is avoided. Moreover, the real-time cleaning function reduces dust pollution in the workshop. Overall, it not only solves the drawback of the disconnect between various processes in traditional equipment, but also achieves simultaneous improvement in processing accuracy, operation efficiency and environmental protection, which can fully meet the high-precision processing requirements of double-sided bevel of steel plates in construction.

[0024] Example 2, as Figure 1-9The main body 1 of the device includes a processing table 11 and a base 12. The lower end of the processing table 11 is fixedly connected to the base 12. The front and rear sides of the upper end of the processing table 11 are fixedly connected to slide rails 13. The upper ends of the two slide rails 13 are slidably connected to the cutting device body 14.

[0025] The cutting device body 14 described above belongs to the conventional technical field of the prior art. Its core structure mainly consists of a plasma generator, a tiltable cutting torch, a CNC adjustment mechanism, a gas supply system, and a water cooling system. Its working principle involves generating a high-frequency current through the plasma generator, ionizing the compressed gas to form a high-temperature plasma arc, reaching temperatures of 15000℃-30000℃. The high-speed airflow then blows away the molten metal, achieving cutting. The tiltable cutting torch is the core component for achieving oblique cutting. Angle adjustment is achieved through mechanical transmission or servo control, typically reaching a tilt range of ±45°. Precise angle positioning and locking are achieved using a CNC control system. The equipment is equipped with an independent gas supply system to regulate gas flow and pressure, while the water cooling system ensures stable operation of the cutting torch in high-temperature environments, preventing component damage. Existing technologies of this type often employ an independent cutting torch adjustment mode, adaptable to various building materials such as carbon steel and stainless steel. Cutting parameters need to be preset manually or by the CNC system to complete the oblique cutting operation; therefore, it will not be described in detail in this solution.

[0026] The lifting assembly 2 includes two hydraulic devices 21 fixedly installed on the upper end of the base 12. The output ends of the two hydraulic devices 21 are fixedly connected to a U-shaped lifting seat 22. Sliding grooves 23 are provided on both the left and right sides of the processing table 11. Limiting rods 24 are fixedly connected to the inner surfaces of the two sliding grooves 23. Sliding blocks 25 are slidably connected to the outer surfaces of the two limiting rods 24.

[0027] The hydraulic device 21 is activated to drive the U-shaped lifting seat 22 to rise and fall, and simultaneously drive the sliding blocks 25 on both sides to slide up and down on the outer surface of the limit rod 24.

[0028] The flipping assembly 3 includes two rotating rods 31. The opposite ends of the two rotating rods 31 are rotatably connected to the sliding block 25 on the same side. The outer surface of the rotating rod 31 on the left is fixedly connected to a belt drive structure 32. The right end of the sliding block 25 on the left is rotatably connected to a rotating shaft 33. The outer surface of the rotating shaft 33 is fixedly connected to a one-way rotating shaft 34. The outer surface of the one-way rotating shaft 34 is rotatably connected to a gear 35. The end of the belt drive structure 32 away from the rotating rod 31 is fixedly connected to the rotating shaft 33.

[0029] The belt drive structure 32 described above consists of two pulleys and a belt.

[0030] A rack 36 is fixedly connected to the left side wall of the inner surface of the processing table 11. A gear 35 meshes with the rack 36. The ends of the two rotating rods 31 that are close to each other are fixedly connected to the flipping frame 37. The front and rear ends of the two flipping frames 37 are fixedly connected with the locking blocks 38. The inner surface of the processing table 11 is provided with locking slots 39 that are adapted to the four locking blocks 38 respectively.

[0031] Furthermore, when the U-shaped lifting seat 22 descends, it causes the locking block 38 to slide in the slot 39, thereby maintaining the stability of the two tilting frames 37 during descent. When the four locking blocks 38 are completely disengaged from the corresponding slots 39, the gear 35 will mesh with the rack 36, thereby causing the gear 35 to drive the one-way rotating shaft 34 and the rotating shaft 33 to rotate counterclockwise simultaneously, which in turn drives the rotating rod 31 and the tilting frame 37 to rotate counterclockwise. At this time, there is a certain distance between the steel plate and the cutting device body 14, and the two will not collide. Moreover, the upper and lower ends of the four locking blocks 38 are both arc surfaces, so they will not get stuck in the slots 39 during tilting.

[0032] Among them, the one-way rotating shaft 34 can only rotate counterclockwise in one direction. When the sliding block 25 rises, the gear 35 will still mesh with the rack 36. In this state, the one-way rotating shaft 34 and the rotating shaft 33 remain stationary. Only when the sliding block 25 falls will the gear 35 mesh with the rack 36, thereby causing the tilting frame 37 to flip.

[0033] The support assembly 4 includes two tilting frames 37, each with a limiting groove 41 on its outer surface. Each limiting groove 41 consists of a parallel groove and an inclined groove. The inner surfaces of the two limiting grooves 41 are slidably connected to two support rods 42. When the tilting frame 37 is tilted counterclockwise, the two support rods 42 will slide to the front end of the inclined groove of the limiting groove 41 at the same time to avoid obstructing the cutting of the tilted steel plate after tilting.

[0034] Furthermore, the inclined portion of the aforementioned limiting groove 41 is mainly to offset the height of the support rod 42 from that side clamp 54 when it slides to one side, thus preventing them from colliding.

[0035] The clamping assembly 5 includes two sliding grooves 51 on the front and rear sides of two flipping frames 37. Springs 52 are provided on the inner surfaces of the four sliding grooves 51. One end of each of the four springs 52 is fixedly connected to a movable block 53. The sides of the movable blocks 53 on the same side that are close to each other are fixedly connected to the clamp 54.

[0036] Each movable block 53 on the same side is fixedly connected to an elastic telescopic rod 55 at one end. The inner surface of the processing table 11 is provided with four guide grooves 56 that are adapted to the elastic telescopic rods 55. The lower ends of the four guide grooves 56 are smoothly connected to the plane of the processing table 11. The guide grooves 56 gradually deepen from the starting end to the inside of the groove, so that the elastic telescopic rods 55 can slide smoothly into the guide groove 56 along the gradual section of the guide groove 56 and smoothly enter the guide groove 56 area. The sliding process is smooth and unobstructed, and it can also slide out smoothly along the original path.

[0037] Spring 52 is a tension spring. After the elastic telescopic rod 55 disengages from the guide groove 56, spring 52 will keep the clamp 54 in the position where the elastic telescopic rod 55 disengages from the guide groove 56, and it will not automatically reset.

[0038] The clamp 54 mentioned above is a four-corner synchronous mechanical clamping mechanism in the prior art. Its core is a combination of four independent upper clamping blocks and lower support blocks, which are arranged to correspond to the four corners of the steel plate. Each set is equipped with a screw or bolt adjustment structure. By manually driving the upper clamping block to descend, it cooperates with the lower support block to clamp the four corners of the steel plate from top to bottom. The structure is simple, the clamping force is controllable, and it is suitable for cutting small and medium-sized steel plates. It can be adapted to steel plates of different sizes by adjusting the spacing. It is a widely used basic clamping technology, so it will not be described in detail in this solution.

[0039] Furthermore, the elastic telescopic rod 55 mentioned above is located at the top of the guide groove 56 in the initial state. As the tilting frame 37 descends, the elastic telescopic rod 55 will slide in the guide groove 56 and eventually completely disengage from the guide groove 56. The two clamps 54 located on the front and rear sides will move towards the center at the same time as the elastic telescopic rod 55 moves, thereby moving its position to the four corners of the steel plate. Then, the four clamps 54 are controlled to clamp the steel plate.

[0040] During loading, the steel plate is first placed on the surface of the two support rods 42 for support. Then, when the tilting frame 37 descends, the four clamps 54 move to the four sides of the steel plate to clamp it. At this time, the four locking blocks 38 are all located in the corresponding slots 39, and the four elastic telescopic rods 55 are completely disengaged from the corresponding guide grooves 56. Then, the cutting device body 14 can be started to move to one end of the steel plate and make a bevel cut on its upper end. After the cutting is completed, the steel plate is lowered and tilted by the lifting component 2 and the tilting component 3. During the counterclockwise tilting of the steel plate, when it is vertical, the two support rods 42 will automatically slide to the bottom of the inclined part of the limiting groove 41 due to gravity. So when the steel plate is completely tilted, the two support rods 42 that were originally located at its lower end will all move to the side, completely exposing the back of the steel plate and not obstructing the cutting of the back of the steel plate.

[0041] The cleaning component 6 includes a pressure plate 61 fixedly connected to the lower end of the U-shaped lifting seat 22, an airbag 62 fixedly connected to the upper end of the base 12, air supply pipes 63 fixedly connected to both the left and right ends of the airbag 62, and air inlets 64 fixedly connected to the ends of the two flipping frames 37 that are close to each other.

[0042] The ends of the two air supply pipes 63 away from the airbag 62 are connected to the sliding block 25 on the same side. The ends of the two air supply pipes 63 away from the airbag 62 pass through the rotating rod 31 on the same side and are fixedly connected to the air inlet 64 at the corresponding position.

[0043] Furthermore, one-way valves are provided at the connection points of the airbag 62 and the two air supply pipes 63, which can only supply gas to the air supply pipes 63 and cannot allow air to enter. A one-way valve is also provided at the rear end of the airbag 62, which can only inflate the airbag 62 and cannot blow air out.

[0044] As the steel plate descends and flips, the U-shaped lifting seat 22 compresses the airbag 62, causing the gas inside the airbag 62 to enter the rotating rod 31 through the air supply pipes 63 on both sides, and finally spray out from the air blowing port 64 to clean the left and right ends of the steel plate, removing the slag and debris generated during the cutting of the upper bevel of the steel plate, and preventing the slag from adhering to the cut surface and affecting the cutting accuracy of the lower bevel of the steel plate.

[0045] Therefore, this solution first solves the problems of disconnected clamping and flipping actions and the need for multiple cuts of the double-sided beveled steel plate by coordinating the lifting component 2, the flipping component 3, and the support component 4. During the lifting process of the steel plate, the clamping component 5 is driven to position and clamp the steel plate synchronously, while the flipping component 3 uses the lifting power to automatically flip the steel plate, which reduces labor intensity and avoids the risk of steel plate displacement and equipment collision caused by manual flipping, ensuring the continuity of double-sided beveled cutting. The cooperation between the flipping component 3 and the support component 4 allows the support rod 42 to automatically slide and avoid the steel plate when it is flipped for reverse beveled cutting, ensuring the smooth operation of double-sided beveled cutting. At the same time, the lifting action can drive the cleaning component 6 to follow the double-sided beveled cutting part of the steel plate in real time to blow air to clean it, solving the problem of tedious slag cleaning at the cut. Overall, it solves the drawbacks of traditional steel plate cutting that requires multiple double-sided beveled cutting and disconnected processes, improving work efficiency and equipment operation stability.

[0046] It should be noted that the specific installation method, circuit connection method and control method of the cutting device body 14 and the hydraulic device 21 used in this invention are all conventional designs, and will not be described in detail in this invention.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A steel plate cutting device for construction engineering, comprising a device body (1), characterized in that: A lifting assembly (2) is provided on the lower side of the main body (1) of the device. A flipping assembly (3) is provided on the upper end of the lifting assembly (2). The flipping assembly (3) includes two flipping frames (37). A support assembly (4) is provided in the middle of the two flipping frames (37). Clamping assemblies (5) are provided on the front and rear sides of the two flipping frames (37). The clamping assembly (5) includes clamps (54). After the lifting assembly (2) drives the four clamps (54) to rise to a certain position, the two clamps (54) on the left side and the two clamps (54) on the right side will move towards the flipping frame (37) on the same side at the same time. A cleaning assembly (6) is provided on the upper side of the lifting assembly (2).

2. The steel plate cutting device for construction engineering according to claim 1, characterized in that: The main body (1) of the device includes a processing table (11) and a base (12). The lower end of the processing table (11) is fixedly connected to the base (12). The front and rear sides of the upper end of the processing table (11) are fixedly connected to slide rails (13). The upper ends of the two slide rails (13) are slidably connected to the cutting device body (14).

3. The steel plate cutting device for construction engineering according to claim 2, characterized in that: The lifting assembly (2) includes two hydraulic devices (21) fixedly installed on the upper end of the base (12). The output ends of the two hydraulic devices (21) are fixedly connected to a U-shaped lifting seat (22). Sliding grooves (23) are provided on both the left and right sides of the processing table (11). Limiting rods (24) are fixedly connected to the inner surfaces of the two sliding grooves (23). Sliding blocks (25) are slidably connected to the outer surfaces of the two limiting rods (24).

4. The steel plate cutting device for construction engineering according to claim 3, characterized in that: The flipping assembly (3) includes two rotating rods (31). The opposite ends of the two rotating rods (31) are rotatably connected to the sliding block (25) on the same side. The outer surface of the rotating rod (31) on the left is fixedly connected to a belt drive structure (32). The right end of the sliding block (25) on the left is rotatably connected to a rotating shaft (33). The outer surface of the rotating shaft (33) is fixedly connected to a one-way rotating shaft (34). The outer surface of the one-way rotating shaft (34) is rotatably connected to a gear (35). The end of the belt drive structure (32) away from the rotating rod (31) is fixedly connected to the rotating shaft (33).

5. A steel plate cutting device for construction engineering according to claim 4, characterized in that: A rack (36) is fixedly connected to the left side wall of the inner surface of the processing table (11). The gear (35) meshes with the rack (36). The ends of the two rotating rods (31) that are close to each other are fixedly connected to the flipping frame (37). The front and rear ends of the two flipping frames (37) are fixedly connected with the locking blocks (38). The inner surface of the processing table (11) is provided with locking slots (39) that are adapted to the four locking blocks (38).

6. A steel plate cutting device for construction engineering according to claim 5, characterized in that: The support assembly (4) includes two tilting frames (37) with limiting grooves (41) on their outer surfaces. Each of the two limiting grooves (41) consists of a parallel groove and an inclined groove. The inner surfaces of the two limiting grooves (41) are slidably connected to two support rods (42). When the tilting frame (37) is tilted counterclockwise, the two support rods (42) will slide to the front end of the inclined groove of the limiting groove (41) at the same time to avoid obstructing the cutting of the steel plate after tilting.

7. A steel plate cutting device for construction engineering according to claim 6, characterized in that: The clamping assembly (5) includes two sliding grooves (51) on the front and rear sides of two flipping frames (37). Springs (52) are provided on the inner surfaces of the four sliding grooves (51). Movable blocks (53) are fixedly connected to one end of each of the four springs (52). The sides of the movable blocks (53) on the same side that are close to each other are fixedly connected to the clamp (54).

8. A steel plate cutting device for construction engineering according to claim 7, characterized in that: The movable blocks (53) on the same side are all fixedly connected to the ends of the blocks that are far apart from each other. The inner surface of the processing table (11) is provided with four guide grooves (56) that are adapted to the elastic telescopic rods (55). The lower ends of the four guide grooves (56) are smoothly connected to the plane of the processing table (11). The grooves (56) gradually deepen from the starting end to the inside of the groove, so that the elastic telescopic rods (55) can slide smoothly into the guide groove (56) along the gradual section of the guide groove (56) and smoothly enter the guide groove (56) area. The sliding process is smooth and unobstructed, and it can also slide out smoothly along the original path.

9. A steel plate cutting device for construction engineering according to claim 4, characterized in that: The cleaning assembly (6) includes a pressure plate (61) fixedly connected to the lower end of the U-shaped lifting seat (22), an airbag (62) fixedly connected to the upper end of the base (12), an air supply pipe (63) fixedly connected to both the left and right ends of the airbag (62), and an air blowing port (64) fixedly connected to the end of each of the two flipping frames (37) that are close to each other.

10. A steel plate cutting device for construction engineering according to claim 9, characterized in that: The ends of the two air supply pipes (63) away from the airbag (62) are connected to the sliding block (25) on the same side. The ends of the two air supply pipes (63) away from the airbag (62) pass through the rotating rod (31) on the same side and are fixedly connected to the air inlet (64) at the corresponding position.

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