Steel structural part cutting machine

Abstract

The invention relates to the technical field of steel structure cutting, and discloses a steel structure part cutting machine which comprises an operation table, conveying belt assemblies arranged on the two sides of the operation table, a clamping mechanism and a cutting mechanism. The clamping mechanism is arranged on the feeding side of the operation table and comprises receding holes formed in the two sides of the operation table, the receding holes in the two sides are connected with the two sides of a C-shaped frame in a penetrating mode, the side, away from the ground, of the C-shaped frame is slidably connected with a middle pressing rod perpendicular to the operation table, the two sides of the C-shaped frame are slidably connected with sliding sleeves, and the side faces of the sliding sleeves are slidably connected with lateral pressing rods. Pressing wheels are arranged at the ends, close to the operation table, of the lateral pressing rods and the middle pressing rods. By arranging the three pressing wheels with adjustable heights and adjustable front and back inclination angles, the steel structural parts with different section shapes and various specifications and dimensions can be effectively adapted and stably clamped, and an operator can perform cutting machining on the premise of not contacting the steel structural parts.

Description

Technical Field

[0001] This invention relates to the field of steel structure cutting technology, specifically a steel structure component cutting machine. Background Technology

[0002] Steel structures, with their excellent mechanical properties and ease of construction, have become an indispensable key material in fields such as architecture, bridges, and industrial plants. In practical engineering applications, various standard-sized steel structural profiles (such as H-beams, T-beams, round steel, square tubes, and I-beams) often need to be precisely cut on-site according to design drawings to meet the assembly requirements of complex components.

[0003] However, currently widely used steel structure cutting equipment has significant shortcomings in terms of clamping versatility. The cross-sectional shapes (such as I-shaped, T-shaped, circular, rectangular, and L-shaped) and dimensions of steel structure components vary greatly, while the existing equipment's clamping system design typically only accommodates a single or a limited number of specific cross-sections. This means that when cutting steel structure components with different cross-sections, operators usually need to manually press the components to secure them. This forces operators to be close to the high-speed rotating cutting wheel, resulting in poor safety during machine operation. Therefore, improvements are needed. Summary of the Invention

[0004] This invention provides a steel structure component cutting machine, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A steel structure component cutting machine includes an operating table with conveyor belt assemblies on both sides of the operating table, and also includes a clamping mechanism and a cutting mechanism.

[0007] The clamping mechanism is located on the feeding side of the operating table and includes clearance holes on both sides of the operating table. The clearance holes on both sides are connected through the two sides of the C-shaped frame. A central pressure rod perpendicular to the operating table is slidably connected to the side of the C-shaped frame away from the ground. Sliding sleeves are slidably connected to both sides of the C-shaped frame. Lateral pressure rods are slidably connected to the sides of the sliding sleeves. Pressure rollers are provided at the ends of the lateral pressure rods and the central pressure rods near the operating table. A clamping drive assembly is provided on the outer side of the C-shaped frame to drive the pressure rollers to move toward the center of the C-shaped frame.

[0008] The cutting mechanism includes a cutting bracket located in the middle of the operating table, with suspension rods slidably connected to both sides of the cutting bracket. A lifting plate is provided at the end of the suspension rods near the operating table, and a cutting wheel is provided on the side of the lifting plate near the operating table.

[0009] As a preferred technical scheme of the present application, the C-shaped frame is fixedly connected with a supporting plate at one end close to the ground, the operating table is provided with a height adjusting assembly for adjusting the height of the C-shaped frame, and the middle part of the pressing wheel is provided with a groove. The clamping driving assembly comprises a tightening belt wrapped outside the C-shaped frame, the distal end of the lateral pressing rod and the middle pressing rod away from the center of the C-shaped frame is provided with a guide pulley matched with the tightening belt, one end of the supporting plate is fixedly connected with the end of the tightening belt, the other end of the supporting plate is provided with a clearance hole, the side surface of the clearance hole is rotatably connected with a winding wheel, the winding wheel winds the free end of the tightening belt, the tightening belt penetrates through the clearance hole, the outer part of the lateral pressing rod is sleeved with a return spring for driving the pressing wheel to move away from the center of the C-shaped frame. The two sides of the conveying belt assembly are provided with C-shaped frames, the height adjusting assembly comprises sliding rods fixedly connected with the two ends of the supporting plate, the middle part of the sliding rod is slidably connected with an L-shaped support fixedly connected with the operating table, the distal end of the sliding rod away from the supporting plate is provided with an I-shaped support, the side of the operating table close to the ground is provided with a hanging frame, the middle part of the hanging frame is threadedly connected with a lifting lead screw rotatably connected with the I-shaped support, and the two sides of the hanging frame are slidably connected with guide sliding rods fixedly connected with the I-shaped support.

[0010] As a preferred technical scheme of the present application, the side surface of the C-shaped frame is provided with a limiting hole, the side surface of the sliding sleeve is fixedly connected with an extending frame, the extending frame is slidably connected with a limiting rod matched with the limiting hole, the outer part of the limiting rod is provided with a limiting spring for driving the limiting rod to move towards the limiting hole, the two limiting holes are a group, the two sides of the C-shaped frame are provided with a group of limiting holes, and when the limiting rods on the side surface of the sliding sleeve are matched with the two limiting holes on the same side of the C-shaped frame respectively, the included angles of the two limiting rods are 180° and 90° respectively.

[0011] As a preferred technical scheme of the present application, the side of the lifting plate close to the operating table is provided with a mounting frame, the mounting frame is rotatably connected with a cutting wheel, the side surface of the mounting frame is provided with a cutting motor, the output shaft of the cutting motor is fixedly connected with the end of the cutting wheel, and the side of the cutting support away from the operating table is provided with a jacking assembly for adjusting the height of the cutting wheel. The jacking assembly comprises a top plate fixedly connected with the distal end of the hanging sliding rod away from the operating table, the middle part of the cutting support is slidably connected with a jacking sliding block, the middle part of the jacking sliding block is rotatably connected with a jacking support rod, the distal end of the jacking support rod away from the jacking sliding block is rotatably connected with the top plate, and the side surface of the jacking sliding block is provided with a jacking frame.

[0012] As a preferred technical scheme of the present application, the conveying belt assembly comprises clearance grooves arranged on the two sides of the operating table, the middle part of the clearance groove is uniformly provided with a plurality of supporting rollers rotatable relative to the side wall of the clearance groove, the two sides of the clearance groove are provided with hanging plates, the hanging plates are rotatably connected with driving rollers, the outer parts of the driving rollers and the supporting rollers are wrapped with a conveying belt, and the side surface of the hanging plate is provided with a conveying motor, the output shaft of the conveying motor is fixedly connected with the end of the driving roller.

[0013] The present application has the following advantages:

[0014] By setting three height-adjustable and front and rear two angle-adjustable compression wheels, cooperating with the height adjustment function of the C-shaped frame, different cross-sectional shapes and various specifications and sizes of steel structure parts can be effectively adapted and clamped, which significantly improves the universality and application range of the equipment. During the cutting operation, only the steel structure part needs to be fixed by the clamping mechanism, and the operator can perform cutting processing without touching the steel structure part, thereby greatly reducing the operation risk and significantly improving the operation safety factor. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a structural schematic view of a steel structure cutting machine.

[0017] Figure 2 It is a front view of a steel structure cutting machine.

[0018] Figure 3 It is a structural schematic view of a conveying belt assembly in a steel structure cutting machine.

[0019] Figure 4 It is a structural schematic view of a cutting mechanism in a steel structure cutting machine.

[0020] Figure 5 It is a structural schematic view of a clamping mechanism in a steel structure cutting machine.

[0021] Figure 6 It is a front view of Figure 5 .

[0022] Figure 7 It is a structural schematic view of a clamping driving assembly in a steel structure cutting machine.

[0023] Figure 8 It is a structural schematic view of a height adjustment assembly in a steel structure cutting machine.

[0024] Figure 9 It is a structural schematic view of a limiting rod and limiting hole cooperation in a steel structure cutting machine.

[0025] Figure 10 It is a structural schematic view of a clamping mechanism for fixing H-shaped steel in a steel structure cutting machine.

[0026] Figure 11 It is a kind of steel structure cutting machine clamping mechanism for the structure of the fixed round pipe schematic diagram.

[0027] Figure 12 It is a kind of steel structure cutting machine clamping mechanism for the structure of the fixed T-shaped steel schematic diagram.

[0028] In the figure: 1, operation platform; 2, conveying belt assembly; 3, clamping mechanism; 4, cutting mechanism; 5, let go of the slot; 6, support roller; 7, conveying motor; 8, suspension plate; 9, drive roller; 10, conveying belt; 11, cutting support; 12, suspension slide bar; 13, lifting plate; 14, mounting frame; 15, cutting wheel; 16, cutting motor; 17, jacking slide block; 18, jacking frame; 19, jacking strut; 20, top plate; 21, jacking assembly; 22, avoid hole; 23, C-shaped frame; 24, height adjustment assembly; 25, slide sleeve; 26, lateral pressure bar; 27, pressure wheel; 28, middle pressure bar; 29, clamping drive assembly; 30, winding wheel; 31, let go of the hole; 32, tighten the belt; 33, return spring; 34, guide pulley; 35, supporting plate; 36, L-shaped support; 37, sliding rod; 38, I-shaped support; 39, suspension frame; 40, guide slide bar; 41, lifting lead screw; 42, extension frame; 43, limit spring; 44, limit hole; 45, H-shaped steel; 46, round pipe; 47, T-shaped steel; 48, limit rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 A kind of steel structure cutting machine, including operation platform 1, operation platform 1 horizontal arrangement, U-shaped support leg is set in the front and back of operation platform 1 below, ensure the stability of operation platform 1, the left side of operation platform 1 is defined as the feed end of steel structure, conveying belt assembly 2 is arranged in the left and right sides of operation platform 1, the feeding direction of conveying belt assembly 2 is right arrangement.Therefore, when conveying belt assembly 2 works, steel structure can be moved from the left side of operation platform 1 to the right side, so as to realize the effect of steel structure conveying, also include clamping mechanism 3 and cutting mechanism 4;

[0031] The clamping mechanism 3 is arranged on the left side of the operation table 1 and used for clamping the steel structure just put in. In order to ensure the clamping stability of the steel structure, the clamping positions are arranged on the left and right sides of the conveying belt assembly 2 on the left side, so that the steel structure has two clamping points. The clamping mechanism 3 comprises two avoiding holes 22 arranged on the front and back sides of the operation table 1, and a C-shaped frame 23 with an opening downward is inserted into the two avoiding holes 22 from top to bottom, that is, the C-shaped frame 23 is arranged on the left and right sides of the conveying belt assembly 2 on the left side. A middle pressing rod 28 vertically arranged is slidably connected to the middle of the upper end of the C-shaped frame 23. A sliding sleeve 25 is slidably connected to the front and back sides of the C-shaped frame 23. A lateral pressing rod 26 is slidably connected to the left and right sides of the sliding sleeve 25. The center of the C-shaped frame 23 and the lateral pressing rod 26 are arranged in a line. A pressing wheel 27 is arranged at the end of the lateral pressing rod 26 and the middle pressing rod 28 close to the center of the C-shaped frame 23. A groove is arranged in the middle of the pressing wheel 27. When the steel structure with a square cross section is clamped, the grooves of the two pressing wheels 27 can just clamp the front and back corners, so that the clamping of the steel structure is more stable. When the middle of the steel structure has a protrusion, the middle pressing wheel 27 can just clamp the protrusion through the groove, so as to improve the fixing effect. A clamping driving assembly 29 is arranged on the outside of the C-shaped frame 23. The clamping driving assembly 29 can drive the lateral pressing rod 26 and the middle pressing rod 28 to move towards the center of the C-shaped frame 23, so that the three pressing wheels 27 can stably press on the outside of the steel structure, realizing the fixing of the steel structure. The axis of the pressing wheel 27 is arranged in a front and back direction, so that the pressing wheel 27 can adaptively rotate during the left and right movement of the steel structure.

[0032] The cutting mechanism 4 is arranged in the middle of the operation table 1 and comprises a cutting support 11 fixedly connected to the operation table 1. The cutting support 11 is a U-shaped structure with an opening downward. The front and back ends of the cutting support 11 are fixedly connected to the front and back sides of the upper surface of the operation table 1. A vertically arranged hanging slide rod 12 is slidably connected to the front and back sides of the cutting support 11. The front and back ends of the hanging slide rod 12 are fixedly connected to the front and back ends of a lifting plate 13 arranged in a front and back direction. A cutting wheel 15 is arranged below the lifting plate 13. The cutting wheel 15 can cut the steel structure.

[0033] In one case of the embodiment, please refer to Figure 4 The front and back ends of a supporting plate 35 arranged in a front and back direction are fixedly connected to the front and back ends of the lower end of the C-shaped frame 23. A height adjusting assembly 24 is arranged on the left side below the operation table 1. The height adjusting assembly 24 can synchronously lift and lower the two C-shaped frames 23 on the left and right sides, so that the pressing wheel 27 can fix the steel structure with different sizes.

[0034] In one case of the embodiment, please refer to Figure 7The clamping driving assembly 29 comprises a tightening belt 32 wrapped outside the C-shaped frame 23, a guide pulley 34 is arranged at the upper end of the lateral pressing rod 26 and the middle pressing rod 28, the axis of the guide pulley 34 is arranged leftward and rightward, the rear end of the tightening belt 32 is connected to the rear side of the upper surface of a supporting plate 35, a clearance hole 31 is arranged at the front side of the supporting plate 35, a winding wheel 30 is arranged below the clearance hole 31, the front end of the tightening belt 32 is wound outside the winding wheel 30 from top to bottom after passing through the clearance hole 31, a locking device is arranged inside the winding wheel 30, the winding wheel 30 winds the tightening belt 32, the tightening belt 32 pushes the guide pulley 34 to move towards the center of the C-shaped frame 23 during winding, so that the pressing wheel 27 can tightly press the outside of the steel structural member to realize clamping, and a return spring 33 is arranged outside the lateral pressing rod 26, the return spring 33 pushes the whole lateral pressing rod 26 to move away from the center of the C-shaped frame 23, so that the cooperation of the return spring 33 and the tightening belt 32 can adjust the height of the pressing wheel 27.

[0035] In one case of the embodiment, please refer to Figure 8 The height adjusting assembly 24 comprises a sliding rod 37 fixedly connected to the front and rear ends of the lower surface of the supporting plate 35, the middle part of the sliding rod 37 is slidingly connected to the lower end of an L-shaped support 36, the upper end of the L-shaped support 36 is fixedly connected to the lower surface of the operating table 1, a I-shaped support 38 is fixedly connected to the lower end of the sliding rod 37, the four protruding parts of the I-shaped support 38 are fixedly connected to the lower ends of the four sliding rods 37, so that the left and right C-shaped frames 23 are synchronously moved up and down through the I-shaped support 38, a hanging frame 39 is arranged at the left side of the lower surface of the operating table 1, the upper end of the hanging frame 39 is fixedly connected to the lower surface of the operating table 1, vertical guide sliding rods 40 are slidingly connected to the left and right sides of the hanging frame 39, the lower ends of the guide sliding rods 40 are fixedly connected to the left and right sides of the I-shaped support 38, a vertical lifting lead screw 41 is rotatably connected to the middle part of the I-shaped support 38, the upper part of the lifting lead screw 41 is threadedly connected to the middle part of the hanging frame 39, so that the distance between the I-shaped support 38 and the hanging frame 39 changes when the lifting lead screw 41 rotates, so that the height of the C-shaped frame 23 is adjusted.

[0036] In one case of the embodiment, please refer to Figures 9-12The limiting hole 44 is arranged on the right side of the C-shaped frame 23, two limiting holes 44 are arranged on the front side of the same C-shaped frame 23, two limiting holes 44 are arranged on the rear side of the C-shaped frame 23, the two limiting holes 44 on the front and rear sides are symmetrically arranged, the extension frame 42 is arranged on the right side of the sliding sleeve 25, the limiting rod 48 which is arranged in left-right direction is slidingly connected to the extension frame 42, the limiting spring 43 is sleeved outside the limiting rod 48, the limiting spring 43 pushes the limiting rod 48 to move to the left, that is, when the limiting rod 48 is aligned with the limiting hole 44, the limiting spring 43 pushes the limiting rod 48 to the left to insert into the limiting hole 44, so that the position of the sliding sleeve 25 on the C-shaped frame 23 is fixed, when the limiting rod 48 is inserted into the upper limiting hole 44, the angle between the lateral pressing rod 26 and the horizontal plane is 45°, the H-shaped steel 45 or the steel structure member with square tube structure is placed on the operation table 1, at this time, the two 45° inclined pressing wheels 27 can be pressed on the front and rear corners of the steel structure member, and when the steel structure member with circular tube 46 is placed on the operation table 1, the three pressing wheels 27 are just pressed above the circular tube 46, at this time, the circular tube 46 can also be clamped.

[0037] In one case of the embodiment, please refer to Figure 4The installation frame 14 is fixedly connected to the middle of the lower surface of the lifting plate 13, the lower end of the installation frame 14 is rotatably connected to the cutting wheel 15, the cutting motor 16 is arranged on the right side of the installation frame 14, the output shaft of the cutting motor 16 is fixedly connected to the right end of the cutting wheel 15, so that the cutting motor 16 drives the cutting wheel 15 to rotate at high speed, the jacking assembly 21 is arranged above the cutting support 11, the jacking assembly 21 can push the hanging slide rod 12 to move up and down, so as to adjust the height of the cutting wheel 15, the jacking assembly 21 comprises a top plate 20 fixedly connected to the upper end of the hanging slide rod 12, the front and rear ends of the top plate 20 arranged front and back are fixedly connected to the upper end of the hanging slide rod 12, the jacking slide block 17 is slidably connected above the cutting support 11, the upper surface of the jacking slide block 17 is rotatably connected to the lower end of the jacking support rod 19, the upper end of the jacking support rod 19 is rotatably connected to the top plate 20, the jacking support rod 19 is in an inclined state towards the upper rear, the jacking frame 18 is fixedly connected to the front side of the jacking slide block 17, when the jacking frame 18 is pushed to the rear side, the jacking slide block 17 moves rearward, at this time the jacking support rod 19 pushes the top plate 20 to move upward, so that the cutting wheel 15 moves upward, but when the jacking frame 18 is moved to the front side, the jacking slide block 17 moves to the front side, at this time the cutting wheel 15 moves downward, so that the height adjustment of the cutting wheel 15 is realized.

[0038] In one case of the embodiment, please refer to Figure 1 and Figure 3 , the conveying belt assembly 2 comprises the letting slot 5 arranged on the left and right sides of the operation table 1, the letting slot 5 is arranged left and right, the letting slot 5 is uniformly arranged with a plurality of support rollers 6 arranged front and back and rotatably connected to the inner wall of the letting slot 5 from left to right, the hanging plate 8 fixedly connected to the lower surface of the operation table 1 is arranged on the left and right sides of the letting slot 5, the lower end of the hanging plate 8 is rotatably connected to the driving roller 9 arranged front and back, the outer part of the driving roller 9 and the support roller 6 is wrapped with the conveying belt 10, the conveying motor 7 is arranged on the front hanging plate 8, the output shaft of the conveying motor 7 is fixedly connected to the front section of the driving roller 9, the conveying motor 7 drives the driving roller 9 to rotate, the driving roller 9 drives the conveying belt 10 to rotate, so that the conveying belt 10 on the left and right sides rotates clockwise.

[0039] In the implementation process of the embodiment, the winding wheel 30 is rotated, the tightening belt 32 is in a relaxed state, the pressing wheel 27 moves towards the direction away from the center of the C-shaped frame 23 under the action of the reset spring 33, when the T-shaped steel 47 needs to be fixed, the limiting rod 48 is pulled to the right side, the limiting rod 48 is inserted into the limiting hole 44 below, when the H-shaped steel 45 or the circular pipe 46 needs to be fixed, the limiting rod 48 is inserted into the limiting hole 44 above, the steel structure is placed into the inside of the C-shaped frame 23 from left to right, the lifting screw 41 is rotated, the height of the C-shaped frame 23 is adjusted up and down according to the size of the steel structure, at this time, the winding wheel 30 is reversely rotated, the pressing wheel 27 moves downwards, and the pressing wheel 27 falls outside the steel structure, so that the clamping treatment of the steel structure is realized.

[0040] The conveying motor 7 is started, the conveying belts 10 on the left and right sides rotate clockwise, the steel structure moves to the right side, when the length of the steel structure extending to the right side relative to the cutting wheel 15 meets the use requirement, the conveying motor 7 is stopped, the jacking frame 18 is pulled forward, the cutting wheel 15 moves downwards, the cutting wheel 15 cuts the steel structure, and in order to improve the cutting efficiency, a groove avoiding the cutting wheel 15 can be arranged at the position where the operation table 1 is located directly below the cutting wheel 15, after the cutting wheel 15 completes the cutting treatment of the steel structure, the small section of the steel structure cut out falls on the conveying belt 10 on the right side, the jacking frame 18 is reversely pushed, when the cutting wheel 15 moves to a high position, the position of the jacking block 17 is fixed through the locking device, at this time, the conveying motor 7 is continuously started, the conveying belt 10 on the right side drives the small section of the steel structure cut out to move rightwards to realize the unloading treatment, and the conveying belt 10 on the left side drives the steel structure body on the left side to move rightwards again, when the length of the steel structure body on the left side extending meets the requirement, the cutting action described above can be repeated again to perform the subsequent cutting treatment.

[0041] The steel structure cutting machine is provided with three height-adjustable pressing wheels 27, the heights of the pressing wheels 27 are adjusted, and the front and rear two pressing wheels 27 are provided with adjustable inclination angles, the height adjustment function of the C-shaped frame 23 is matched, different cross-sectional shapes and various specifications and sizes of steel structures can be effectively adapted and stably clamped, the universality and application range of the equipment are significantly improved, during the cutting operation, only the clamping mechanism 3 is needed to fix the steel structure, the operator can perform the cutting processing without contacting the steel structure, so that the operation risk is greatly reduced, and the operation safety factor is significantly improved.

[0042] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A steel structural member cutting machine comprising an operating table, characterized in that, Both sides of the operation table are provided with a conveying belt assembly, further comprising a clamping mechanism and a cutting mechanism; The clamping mechanism is arranged on one side of the feeding of the operation table, and comprises an escape hole arranged on both sides of the operation table, the escape holes on both sides are connected through the two sides of the C-shaped frame, the side away from the ground of the C-shaped frame is slidingly connected with a middle pressing rod perpendicular to the operation table, the two sides of the C-shaped frame are slidingly connected with a sliding sleeve, the side surface of the sliding sleeve is slidingly connected with a lateral pressing rod, the end of the lateral pressing rod and the middle pressing rod close to the operation table is provided with a pressing wheel, the outer side of the C-shaped frame is provided with a clamping drive assembly for driving the pressing wheel to move towards the center of the C-shaped frame. The cutting mechanism comprises a cutting support arranged in the middle of the operation table, the two sides of the cutting support are slidingly connected with a hanging slide rod, the end of the hanging slide rod close to the operation table is provided with a lifting plate, the side of the lifting plate close to the operation table is provided with a cutting wheel.

2. A steel structural member cutting machine according to claim 1, wherein The end of the C-shaped frame close to the ground is fixedly connected with a supporting plate, the operation table is provided with a height adjusting assembly for adjusting the height of the C-shaped frame, and the middle of the pressing wheel is provided with a groove.

3. A steel structural member cutting machine according to claim 2, wherein The clamping drive assembly comprises a tightening belt wrapped outside the C-shaped frame, the end of the lateral pressing rod and the middle pressing rod away from the center of the C-shaped frame is provided with a guide pulley matched with the tightening belt, one end of the supporting plate is fixedly connected with the end of the tightening belt, the other end of the supporting plate is provided with a clearance hole, the side surface of the clearance hole is rotatably connected with a winding wheel, the winding wheel winds the free end of the tightening belt, the tightening belt penetrates through the clearance hole, and the outer part of the lateral pressing rod is provided with a return spring for driving the pressing wheel to move away from the center of the C-shaped frame.

4. A steel structural member cutting machine according to claim 2, wherein Both sides of the conveying belt assembly are provided with a C-shaped frame, the height adjusting assembly comprises a sliding rod fixedly connected with both ends of the supporting plate, the middle of the sliding rod is slidingly connected with an L-shaped support fixedly connected with the operation table, the end of the sliding rod away from the supporting plate is provided with an I-shaped support, the side of the operation table close to the ground is provided with a hanging frame, the middle of the hanging frame is threadedly connected with a lifting lead screw rotatably connected with the I-shaped support, and the two sides of the hanging frame are slidingly connected with guide sliding rods fixedly connected with the I-shaped support.

5. A steel structural member cutting machine according to claim 1, wherein The side surface of the C-shaped frame is provided with a limiting hole, the side surface of the sliding sleeve is fixedly connected with an extension frame, the extension frame is slidingly connected with a limiting rod matched with the limiting hole, the outer part of the limiting rod is provided with a limiting spring for driving the limiting rod to move towards the limiting hole, the two limiting holes are a group, and each side of the C-shaped frame is provided with a group of limiting holes, when the limiting rods on the side surface of the sliding sleeve are matched with the two limiting holes on the same side of the C-shaped frame, the included angles of the two limiting rods are 180° and 90° respectively.

6. A steel structural member cutting machine according to claim 1, wherein The side of the lifting plate close to the operation table is provided with a mounting frame, the mounting frame is rotatably connected with the cutting wheel, the side surface of the mounting frame is provided with a cutting motor, the output shaft of the cutting motor is fixedly connected with the end of the cutting wheel, and the side of the cutting support away from the operation table is provided with a jacking assembly for adjusting the height of the cutting wheel.

7. A steel structural member cutting machine according to claim 6, wherein The jacking assembly comprises a top plate fixedly connected with the end of the hanging slide rod away from the operation table, the middle of the cutting support is slidingly connected with a jacking block, the middle of the jacking block is rotatably connected with a jacking support, the end of the jacking support away from the jacking block is rotatably connected with the top plate, and the side surface of the jacking block is provided with a jacking frame.

8. A steel structural member cutting machine according to claim 1, wherein The conveying belt assembly comprises a gap provided on both sides of the operation table, a plurality of supporting rollers rotating relative to the side wall of the gap are uniformly distributed in the middle of the gap, a hanging plate is provided on both sides of the gap, a driving roller is rotationally connected to the hanging plate, the outer part of the driving roller and the supporting roller is wrapped with a conveying belt, a conveying motor is provided on the side of the hanging plate, and the output shaft of the conveying motor is fixedly connected to the end of the driving roller.

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