Steel structure regeneration cutting structure

Abstract

The invention relates to a steel structure regeneration cutting structure, and belongs to the technical field of steel structure regeneration utilization. The structure comprises a material transmission assembly, a pre-cutting assembly and a crushing main machine which form material communication; low-temperature plate groups are arranged in front of the pre-cutting assembly and the crushing main machine so as to ensure that the environment of the material assembly is maintained at the ductile-brittle transition temperature, and a conveying belt is arranged at the discharging end of the crushing main machine; the pre-cutting assembly comprises a fixing assembly, an upper pre-cutting unit and a lower pre-cutting unit, the upper pre-cutting unit comprises an upper guide frame, an adjusting frame and a longitudinal cutter, and the lower pre-cutting unit comprises a lower sliding rail, a sliding seat and a transverse cutter; according to the structure, a steel structure is cut through the pre-cutting assembly, then is crushed by the crushing main machine, and is operated in a low-temperature environment, so that the regeneration treatment efficiency and quality of the steel structure are improved, and the technical problems of difficulty in cutting and low efficiency in the regeneration process of a traditional steel structure are solved.

Description

Technical Field

[0001] The present invention provides a steel structure recycling cutting structure, which relates to the field of steel structure recycling treatment equipment, and specifically relates to a steel structure recycling cutting structure and its use method. Background Technique

[0002] With the continuous advancement of the industrialization process, steel structures are widely used as important materials in the construction and engineering fields. However, this has led to the generation of a large amount of waste steel structures. How to efficiently recycle these waste steel structures has become an urgent problem to be solved. At present, the recycling treatment of steel structures mainly includes processes such as cutting and crushing, through which waste steel structures are transformed into reusable raw materials. In the prior art, there are various forms of crushing devices for waste materials. For example, a Chinese patent with the publication number CN215791083U discloses a waste plastic flow processing material crushing device, which includes a crusher. Inside the crusher, there are a front cutting roller and a rear cutting roller for multi-stage cutting of waste plastic, and a middle flow deflector is used to disperse the material to avoid material aggregation and improve the cutting efficiency. This design concept of multi-stage cutting has certain reference value for processing large waste materials. In terms of cutting technology, a Chinese patent with the publication number CN118438061A proposes a cable laser cutting machine and method, which includes a machine tool, a material placement rack, a conveying component, a metering component, a cutting component, etc. By using a fixing component and a straightening component, problems such as uneven cutting surfaces caused by material offset during the cutting process are solved. This cutting method of precise positioning and fixing is of great significance for improving cutting quality. For the processing of tubular materials, a Chinese patent with the publication number CN115401825B discloses a pipe processing device, which includes an adaptive pipe bending processing mechanism, a periodic fixed-length tearing and crushing mechanism, and a semi-closed centrifugal full crushing mechanism, and can perform efficient cutting, crushing, and tearing processing on pipes of different sizes and shapes. This patent applies force evenly from all directions around the pipe to evenly tear the pipe and improve the crushing effect. In terms of the continuous processing of material cutting and crushing, a Chinese patent with the publication number CN106273072A proposes a method for crushing prepreg waste and the device used. This method includes cutting the prepreg waste into strips and then crushing the strips into prepreg waste materials. The device includes a cutting unit and a crushing unit. The cutting unit includes a unwind roller shaft, a guiding unit, a cutting device, etc., and the crushing unit includes a feeding port, a shearing mechanism, a motor, and a discharging port, realizing the recycling of waste materials while efficiently preparing waste materials with certain physical properties and shapes. In addition, Chinese patent publication number CN115091657B discloses a waste shell crushing and recycling device for electronic product manufacturing, which uses active cutting parts and driven cutting parts to cut the waste shell into multiple sections, and then performs stamping and slitting after cutting, and finally undergoes multiple crushing, thereby improving the crushing effect and recycling efficiency; However, there are still some problems with the existing technology when processing steel structure materials: first, steel structure materials are hard and tough, and conventional cutting equipment is difficult to process efficiently, resulting in low cutting efficiency; second, traditional cutting methods have high energy consumption and do not meet the requirements of energy conservation and emission reduction; third, existing cutting equipment is often designed for materials of specific shapes and sizes, and has poor adaptability to steel structures with complex shapes and variable sizes; finally, the heat generated during the cutting process may cause changes in material properties and affect the subsequent crushing effect; especially in the recycling and processing of steel structures, how to utilize the physical properties of the material to perform efficient cutting and crushing under appropriate temperature conditions to reduce energy consumption and improve processing efficiency is a technical problem that needs to be solved urgently. Summary of the invention

[0003] In order to solve the current technical problem of low efficiency in steel structure recycling and cutting and achieve the technical effect of improving the efficiency of steel structure recycling and cutting and reducing energy consumption, the present invention provides a steel structure regeneration and cutting structure.

[0004] The technical solution adopted by the present invention to solve its technical problems is: to provide a steel structure regeneration and cutting structure, including a material transmission component for transmitting the steel structure; a pre-cutting component for cutting the steel structure; and a crushing host for crushing the cut steel structure; it is characterized in that the material transmission component, the pre-cutting component, and the crushing host form a material connection, and the pre-cutting component and the crushing host are respectively provided with a low-temperature plate group in front to ensure that the material component environment is maintained at the ductile-brittle transition temperature (DBTT), and a conveyor belt for material transfer is provided at the discharge end of the crushing host.

[0005] Furthermore, the pre-cutting component comprises: a fixed component (1), wherein the fixed component (1) is fixedly placed at the end of the material transmission component, an upper pre-cutting unit (2) is placed on the fixed component (1) and is placed across the material transmission component, and a lower pre-cutting unit (3) is placed on the fixed component (1) and is located below the transmission surface of the material transmission component, and the extension width of the lower pre-cutting unit (3) is not less than the width of the material transmission component; Further, the fixing component (1) includes a main body mounting frame (11). One side of the main body mounting frame (11) is open. At least two guide rollers (12) are installed inside the main body mounting frame (11). The guide rollers (12) are cam wheels and are provided with rubber layers on their surfaces. The guide rollers (12) are used to guide the material. The guide rollers (12) are driven electrically. The guide rollers (12) are formed by combining multiple rubber discs, and the outer circumferential surface shapes of the rubber discs are combined to fit the contour of the material. Further, the upper pre-cutting unit (2) includes an upper guide frame (21). The upper guide frame (21) is formed by bending a pipe body and is provided with at least one set of parallel structures. A number of adjusting frames (22) are arranged on the upper guide frame (21). The adjusting frames (22) are slidably arranged along the upper guide frame (21) and are fastened and adjusted by screws. A longitudinal cutter (23) is correspondingly arranged on the adjusting frames (22). The longitudinal cutter (23) is one or a combination of laser cutting and saw blade cutting. Two sets of upper pre-cutting units (2) are provided, and the corresponding longitudinal cutters (23) of the two sets are arranged in a staggered manner. Further, the lower pre-cutting unit (3) includes a lower slide rail (31). One end of the lower slide rail (31) is fixed to the main body mounting frame (11). A sliding seat (32) slides on the lower slide rail (31). A transverse cutter (33) is detachably placed on the sliding seat (32). Guide brackets (34) are symmetrically arranged on both sides of the lower slide rail (31). Further, the transverse cutter (33) is arranged by saw blade cutting and cuts the material horizontally. A material clamping and fixing structure is arranged between the upper pre-cutting unit (2) and the lower pre-cutting unit (3) to perform short-term clamping of the material. Further, a plurality of sliding seats (32) are equidistantly arranged on the lower slide rail (31), and the plurality of sliding seats (32) work synchronously.

[0006] The beneficial effects of the present invention are as follows: By introducing a low-temperature plate group during the steel structure recycling process, the steel structure material is maintained in the ductile-brittle transition temperature (DBTT) state, significantly improving the brittleness of the steel structure. Thus, the pre-cutting component and the crushing main machine can achieve efficient cutting and crushing with lower energy consumption during the processing. Compared with the prior art, the steel structure regeneration cutting structure of the present invention forms a complete material processing flow through the organic combination of the material transmission component, the pre-cutting component, and the crushing main machine, realizing the continuity and automation of the steel structure recycling process, greatly improving the efficiency of steel structure recycling cutting, and reducing energy consumption. At the same time, the coordinated operation of the upper pre-cutting unit and the lower pre-cutting unit, as well as the synchronous operation of multiple sliding seats, further optimize the cutting process and improve the accuracy and efficiency of the steel structure recycling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1This is the three-dimensional structure diagram of the pre-cut component of the present invention; Figure 2 This is the structural schematic diagram of the cutting component of the present invention; Figure 3 This is the side view of the pre-cut component set of the present invention.

[0008] In the attached drawings:

[0009] 1. Fixed component; 2. Upper pre-cut unit; 3. Lower pre-cut unit; 11. Main body mounting frame; 12. Guide roller; 21. Upper guide frame; 22. Adjusting frame; 23. Longitudinal cutter; 31. Lower slide rail; 32. Sliding seat; 33. Transverse cutter; 34. Guide bracket; 4. Material transmission component; 5. Low-temperature plate group; 6. Crushing main machine; 7. Transmission belt. Specific embodiments

[0010] Next, the technical solution of the present invention will be clearly and completely described with the help of embodiments in conjunction with the attached drawings; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention; A steel structure recycling cutting structure includes a material transmission component (4), a pre-cut component, and a crushing main machine (6); the material transmission component (4) is used for the transmission of steel structures, the pre-cut component is used for the sub-cutting of steel structures, and the crushing main machine (6) is used for the crushing of the sub-cut steel structures; the material transmission component (4), the pre-cut component, and the crushing main machine (6) form a material connection, and a low-temperature plate group (5) is respectively arranged in front of the pre-cut component and the crushing main machine (6) to ensure that the material component environment is maintained at the ductile-brittle transition temperature (DBTT), and a transmission belt (7) for material transfer is arranged at the discharge end of the crushing main machine (6); The material transmission component (4) is composed of a chain plate type conveying mechanism. The chain plate type conveyor includes a driving motor, a reducer, a sprocket, a chain, and a chain plate; the driving motor drives the sprocket to rotate through the reducer, the sprocket drives the chain to move, and the chain plate is fixed on the chain for carrying steel structure materials; the width of the material transmission component (4) is 1200 mm, the length is 5000 mm, the transmission speed is adjustable, and the maximum speed is 0.5 m / s; The pre-cut component is fixedly installed at the end of the material transmission component (4) and is used for the preliminary sub-cutting of the transmitted steel structure; the pre-cut component includes a fixed component (1), an upper pre-cut unit (2), and a lower pre-cut unit (3); The fixing component (1) is fixedly placed at the end of the material transmission component (4). The upper pre-cutting unit (2) is placed on the fixing component (1) and spans above the material transmission component (4). The lower pre-cutting unit (3) is placed on the fixing component (1) and is located below the transmission surface of the material transmission component (4). The extending width of the lower pre-cutting unit (3) is not less than the width of the material transmission component (4). The fixing component (1) includes a main body mounting frame (11). One side of the main body mounting frame (11) is open. Two guiding rollers (12) are installed inside the main body mounting frame (11). The guiding rollers (12) are cam wheels and are provided with rubber layers on their surfaces for guiding the material. The guiding rollers (12) are electrically driven, are formed by combining multiple rubber discs, and are adapted to the material profile through the combination of the outer circumferential surface shapes of the rubber discs. Parameters of the main body mounting frame (11): steel, 1500mm×1500mm×20mm; Parameters of the guiding roller (12): diameter 200mm, hardness of the rubber disc Shore A 70; The upper pre-cutting unit (2) includes an upper guiding frame (21). The upper guiding frame (21) is formed by bending a pipe body, has two groups of parallel structures. Four adjusting frames (22) are placed on the upper guiding frame (21). The adjusting frames (22) are slidably arranged along the upper guiding frame (21) and are fastened and adjusted by screws. A longitudinal cutter (23) is correspondingly arranged on the adjusting frame (22). The longitudinal cutter (23) is a laser cutter with a power of 2000 W and a cutting speed of 10m / min. There are two groups of upper pre-cutting units (2), and the corresponding longitudinal cutters (23) of the two groups are arranged in a staggered manner. Parameters of the upper guiding frame (21): stainless steel pipe, diameter 50mm, wall thickness 5mm, bending radius 500mm; Parameters of the adjusting frame (22): aluminum alloy, 300mm×200mm×150mm; The lower pre-cutting unit (3) includes a lower slide rail (31). One end of the lower slide rail (31) is fixedly placed on the main body mounting frame (11). A sliding seat (32) slides on the lower slide rail (31). A transverse cutter (33) is detachably placed on the sliding seat (32). Guiding brackets (34) are symmetrically arranged on both sides of the lower slide rail (31). Parameters of the lower slide rail (31): cemented carbide, 1500mm×100mm×50mm; Parameters of the sliding seat (32): aluminum alloy, 200mm×150mm×100mm; Parameters of the guiding bracket (34): stainless steel, 300mm×100mm×50mm; The transverse cutter (33) is set with a saw blade cutting. The diameter of the saw blade is 400mm, the thickness is 3mm, and the rotation speed is 3000 rpm. Three sliding seats (32) are equidistantly arranged on the lower slide rail (31) with a spacing of 500 mm and work synchronously. The cryogenic plate group (5) adopts a liquid nitrogen cooling system, including a liquid nitrogen storage tank, liquid nitrogen delivery pipes, nozzles and a temperature control system. The liquid nitrogen storage tank has a capacity of 500 L, and the liquid nitrogen delivery pipes (stainless steel, diameter 20 mm, wall thickness 2 mm). The nozzles adopt an atomization design, and the temperature control system adjusts the liquid nitrogen spraying amount in real time to maintain the temperature of the steel structure at -20°C to -40°C. The crushing main machine (6) adopts a hammer crusher, including a crushing chamber, a rotor, hammer heads and a sieve plate. The rotor has a diameter of 800 mm, a length of 1200 mm, and a rotational speed of 960 rpm. The number of hammer heads (high chromium alloy steel) is 24, and the single weight is 15 kg. The aperture of the sieve plate is adjustable from 20 mm to 100 mm, and the processing capacity is 10 t / h. The conveyor belt (7) adopts a wear-resistant rubber conveyor belt with a width of 1000 mm, a length of 10000 mm, a thickness of 15 mm, and a conveying speed of 1 m / s; the height of the side baffles is 200 mm; the power of the drive motor is 5.5 kW, and the reduction ratio is 1:20; in the actual use process, the steel structure is conveyed to the pre-cutting assembly through the material transmission assembly. A cryogenic plate group is arranged at the inlet of the pre-cutting assembly. The cryogenic plate group cools the steel structure below the ductile-brittle transition temperature, making the steel structure brittle and facilitating cutting; the upper pre-cutting unit and the lower pre-cutting unit of the pre-cutting assembly perform longitudinal and transverse cutting on the steel structure, dividing the large steel structure into small pieces; the cut steel structure is continuously conveyed to the crushing main machine, and the cryogenic plate group in front of the crushing main machine continues to maintain the low temperature state of the steel structure. The crushing main machine performs crushing treatment on the cut steel structure; the crushed materials are conveyed to the next process or storage area through the conveyor belt.

[0011] The working process of the entire steel structure regeneration cutting structure has a high degree of automation and high efficiency, can effectively process various waste steel structures, and realizes the regeneration and utilization of steel structures; through cryogenic treatment and pre-cutting separation, the load of the crushing main machine is greatly reduced, the service life of the equipment is extended, and the processing efficiency is improved.

[0012] Embodiment 2:

[0013] A specific implementation manner of a steel structure regeneration cutting structure is as follows: Step 1: Setting and operating the material transmission assembly (4); the material transmission assembly (4) is composed of a chain plate conveyor, which includes a driving motor, a reducer, a sprocket, a chain and a chain plate; the driving motor drives the sprocket to rotate through the reducer, and the sprocket drives the chain to move, and a chain plate is fixed on the chain, and the chain plate is used to carry the steel structure material; the width of the material transmission assembly is 1200 mm, the length is 5000 mm, the transmission speed is adjustable, and the maximum speed is 0.5 m / s; Step 2: Installation and use of the pre-cutting component; the pre-cutting component is fixedly installed at the end of the material transmission component and is used to perform preliminary cutting of the transmitted steel structure; the pre-cutting component includes a fixed component, an upper pre-cutting unit and a lower pre-cutting unit; the fixed component is fixedly placed at the end of the material transmission component, the upper pre-cutting unit is placed on the fixed component and is placed across the top of the material transmission component, the lower pre-cutting unit is placed on the fixed component and is located below the transmission surface of the material transmission component, and the extension width of the lower pre-cutting unit is not less than the width of the material transmission component; Step 3: Configuration of cryogenic plate group; the pre-cutting components and crushing host are respectively equipped with cryogenic plate groups in front to ensure that the material component environment is maintained at the ductile-brittle transition temperature (DBTT), usually -20℃ to -40℃; the cryogenic plate group adopts a liquid nitrogen cooling system, including a liquid nitrogen storage tank, liquid nitrogen delivery pipeline, nozzle and temperature control system; Step 4: Operation of the crushing host; The crushing host adopts a hammer crusher, including a crushing chamber, a rotor, a hammer head and a screen plate; The crushing chamber is made of high-strength alloy steel, and the inner wall is provided with a wear-resistant lining plate; The rotor diameter is 800 mm, the length is 1200 mm, and the speed is 960 rpm; The hammer head is made of high-chromium alloy steel, the number is 24, and the weight of a single hammer head is 15 kg; The aperture of the screen plate is adjustable, ranging from 20 mm to 100 mm; The processing capacity of the crushing host is 10 t / h; Step 5: Use of conveyor belt; A conveyor belt for material transfer is set at the discharge end of the crushing machine; the conveyor belt is made of wear-resistant rubber conveyor belt with a width of 1000 mm, a length of 10000 mm, a thickness of 15 mm, and a transmission speed of 1m / s; baffles are set on both sides of the conveyor belt with a height of 200 mm to prevent materials from falling.

[0014] During actual use, the steel structure is transported to the pre-cutting assembly through the material transmission assembly. The low-temperature plate group cools the steel structure to below the ductile-brittle transition temperature, making the steel structure brittle and easy to cut; the upper pre-cutting unit and the lower pre-cutting unit of the pre-cutting assembly cut the steel structure longitudinally and transversely, cutting the large steel structure into small pieces; the cut steel structure is continuously transported to the crushing host, and the low-temperature plate group in front of the crushing host continues to keep the steel structure in a low temperature state, and the crushing host crushes the cut steel structure; the crushed material is transported to the next process or storage area through a conveyor belt.

[0015] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A regenerative cutting structure for steel structures, comprising: A material transmission component for transmitting steel structures; A pre-cutting component for cutting steel structures; A crushing main machine for crushing the cut steel structures; Characterized in that the material transmission component, the pre-cutting component, and the crushing main machine form a material connection. Low-temperature plate groups are respectively arranged in front of the pre-cutting component and the crushing main machine to ensure that the environment of the material component is maintained at the ductile-brittle transition temperature (DBTT). A conveyor belt for material transfer is arranged at the discharge end of the crushing main machine.

2. The steel structure recycling cutting structure according to claim 1, characterized in that, The pre-cutting component includes: a fixed component (1), the fixed component (1) is fixedly placed at the end of the material transmission component. The upper pre-cutting unit (2) is placed on the fixed component (1) and spans above the material transmission component. The lower pre-cutting unit (3) is placed on the fixed component (1) and is located below the transmission surface of the material transmission component. The extended width of the lower pre-cutting unit (3) is not less than the width of the material transmission component.

3. The steel structure recycling cutting structure according to claim 2, characterized in that: The fixed component (1) includes a main body mounting frame (11). One side of the main body mounting frame (11) is open. At least two guide rollers (12) are installed in the main body mounting frame (11). The guide rollers (12) are concave wheels and are provided with rubber layers on their surfaces. The guide rollers (12) are used to guide the material. Further, the guide rollers (12) are electrically driven. The guide rollers (12) are formed by combining multiple rubber discs, and the outer circumferential surface shapes of the rubber discs are combined to adapt to the material contour.

4. The steel structure recycling cutting structure according to claim 3, characterized in that: The upper pre-cutting unit (2) includes an upper guide frame (21). The upper guide frame (21) is formed by bending a pipe body and is provided with at least one set of parallel structures. Several adjusting frames (22) are placed on the upper guide frame (21). The adjusting frames (22) are slidably arranged along the upper guide frame (21) and are fastened and adjusted by screws. A longitudinal cutter (23) is correspondingly arranged on the adjusting frames (22). Further, the longitudinal cutter (23) is one or a combination of laser cutting and saw blade cutting. Further, two sets of upper pre-cutting units (2) are provided, and the corresponding longitudinal cutters (23) of the two sets are arranged in a staggered manner.

5. The regenerative cutting structure for steel structures according to claim 4, wherein: The lower pre-cutting unit (3) includes a lower slide rail (31). One end of the lower slide rail (31) is fixedly placed on the main body mounting frame (11). A sliding seat (32) slides on the lower slide rail (31). A transverse cutter (33) is detachably placed on the sliding seat (32). Guide brackets (34) are symmetrically arranged on both sides of the lower slide rail (31).

6. The regenerative cutting structure for steel structures according to claim 4, characterized in that: The transverse cutter (33) is arranged by saw blade cutting and cuts the material horizontally. A material clamping and fixing structure is arranged between the upper pre-cutting unit (2) and the lower pre-cutting unit (3) to perform short-term clamping of the material.

7. The steel structure recycling cutting structure according to claim 6, characterized in that: A plurality of sliding seats (32) are equidistantly arranged on the lower slide rail (31), and the plurality of sliding seats (32) work synchronously.

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