High-speed guardrail plate shearing machine

Abstract

The utility model relates to the technical field of plate shearing machines, in particular to a high-speed guardrail plate shearing machine which can roll a high-speed guardrail plate to be flat, enables the high-speed guardrail plate to be straight and free of radian, facilitates subsequent extrusion forming and is good in practicability. Comprising a plate shearing machine body, a plate shearing cutter set and an uncoiling mechanism, the plate shearing cutter set is installed on the plate shearing machine body, and the uncoiling mechanism is installed in front of the plate shearing machine body; the plate shearing machine further comprises a first rack, two supporting plate rollers, a motor, two first pushing cylinders and a pressing roller, the first rack is installed between the plate shearing machine body and the uncoiling mechanism, the two supporting plate rollers are rotatably installed on the first rack, the motor is installed on the first rack, an output shaft of the motor is in transmission connection with the supporting plate rollers, and the fixed ends of the two first pushing cylinders are installed on the two sides of the first rack respectively. A rotating shaft of the pressing roller is rotationally connected with the top ends of piston rods of the two first push cylinders correspondingly, the pressing roller and the two supporting plate rollers are arranged in parallel, and the pressing roller is located above the middles of the two supporting plate rollers.

Description

Technical Field

[0001] The utility model relates to the technical field of plate shearing machines, in particular to a high-speed guardrail plate shearing machine. Background Art

[0002] Highway guardrail is the main form of semi-rigid guardrail, which is a continuous structure with corrugated steel guardrail plates spliced ​​together and supported by main columns. It absorbs energy when vehicles collide with it, making it not easy to be destroyed, while also providing good protection for vehicles and drivers and passengers.

[0003] Highway guardrails are made by shearing steel plates and extruding them into double or triple waveforms. A shearing machine is needed in the shearing process stage. For example, a shearing machine for guardrail plate processing proposed in the Chinese utility model patent with application number CN202320610686.0, the shearing machine drives the positioning plate to slide through the driving sliding assembly. Through the observation of the ruler, the distance from the positioning plate to the shearing machine body is the shearing length of the guardrail plate. The suction fan is convenient for adsorbing the guardrail plate through the suction pipe and the suction hood, and then the sliding plate is driven by the sliding assembly to slide on the top plate, thereby driving the suction fan to move, so as to facilitate the guardrail plate to move to the material receiving box, turn off the suction fan, and the guardrail plate falls into the material receiving box. The buffer assembly is convenient for protecting the guardrail plate, the limit assembly is convenient for fixing the position of the material receiving box, and the locking universal wheel is convenient for moving the material receiving box. Therefore, the shearing machine for guardrail plate processing is convenient for accurately shearing the length of the guardrail plate, and the efficiency is high. At the same time, it is convenient for unloading and collecting the guardrail plate, saving time and effort, not easy to damage the guardrail plate, and has strong practicality.

[0004] During the actual shearing work, since the length of the highway guardrail reaches 4320mm, and the raw material of the guardrail is hot-rolled steel strip, which is a steel coil, the steel strip opened from the steel coil has a certain curvature before shearing. Directly using the above-mentioned prior art shearing machine to shear the steel strip will cause the highway guardrail to have a certain curvature, which is not conducive to subsequent extrusion molding. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a high-speed guardrail plate shearing machine which can roll the high-speed guardrail plate flat to make the high-speed guardrail plate straight without curvature, facilitate subsequent extrusion molding, and has good practicality.

[0006] The utility model discloses a high-speed guardrail plate shearing machine, comprising a shearing machine body, a shearing knife group and an unwinding mechanism, wherein the shearing knife group is installed on the shearing machine body, the shearing knife group comprises a lower fixed knife and an upper movable knife, the unwinding mechanism is installed in front of the shearing machine body, the unwinding mechanism is used to load the steel coil and convey the steel strip to the shearing machine body; the utility model also comprises a frame one, two supporting rollers, a motor, two push cylinders one and a pressure roller, the frame one is installed between the shearing machine body and the unwinding mechanism, the two supporting rollers are rotatably installed on the frame one, the motor is installed on the frame one, the output shaft of the motor is drivingly connected with the supporting roller, the fixed ends of the two push cylinders one are respectively installed on both sides of the frame one, the pressure roller The rotating shaft is rotatably connected to the top end of the piston rod of the two push cylinders, the pressure roller and the two support rollers are arranged in parallel, and the pressure roller is located above the middle of the two support rollers; when working, the steel strip coil is loaded on the unwinding mechanism, the steel strip is drawn out from the steel strip coil and passes through between the two support rollers and the pressure roller, the steel strip passes between the fixed knife and the upper movable knife of the shearing knife group, the piston rods of the two push cylinders contract to squeeze the pressure roller toward the middle of the two support rollers, thereby rolling the steel strip flat, and the rolled steel strip is conveyed to the shearing machine body, the upper movable knife of the shearing knife group descends, and cooperates with the fixed knife to cut the steel strip, and the cut high-speed guardrail plate is straight without curvature, which is convenient for subsequent extrusion molding and has good practicality.

[0007] Preferably, it also includes a gantry, a sliding sleeve, a sliding rod, a roller and a grating head. The gantry is installed on the frame one, the gantry is located at the rear side of the supporting plate roller, the sliding sleeve is installed on the gantry, the sliding rod is vertically slidably installed on the sliding sleeve, the lower end of the sliding rod is rotatably installed with a roller, the roller is in rolling contact with the steel belt, a grating ruler is arranged on the side wall of the sliding rod, the grating head is installed on the sliding sleeve, the grating head detects the up and down displacement of the sliding rod grating ruler, and the grating head is electrically connected to the controller of the two push cylinders one; the roller is in rolling contact with the steel belt, and after the steel belt is rolled by the two supporting plate rollers and the push cylinder one, If the steel strip has an inward curvature, the roller and the slide bar descend, the grating head detects the grating ruler on the slide bar to generate signal one, and the controller controls the two push cylinders one to drive the pressure roller to descend according to signal one, thereby increasing the rolling force on the steel strip and eliminating the inward curvature of the steel strip; if the steel strip has an outward curvature, the roller and the slide bar rise, the grating head detects the grating ruler on the slide bar to generate signal two, and the controller controls the two push cylinders one to drive the pressure roller to rise according to signal two, thereby reducing the rolling force on the steel strip and eliminating the outward curvature of the steel strip and improving the straightness of the steel strip.

[0008] Preferably, it also includes multiple limiting rings and multiple bolts. Both ends of the two support rollers and the pressure roller are equipped with limiting rings. The multiple bolts respectively fasten and lock the multiple limiting rings on the two support rollers and the pressure roller; the inner edges of the multiple limiting rings are in contact with the two sides of the steel strip respectively, so that the multiple limiting rings limit the steel strip between the two support rollers and the pressure roller, thereby improving the stability of rolling the steel strip. The multiple bolts are loosened to adjust the positions of the multiple limiting rings. It is suitable for steel strips of different widths and has good versatility.

[0009] Preferably, it also includes two frames two, a feed roller frame, a fixed-length plate and a contact switch. The two frames two are located on the rear side of the shearing machine body, the feed roller frame is installed on the two frames two, and multiple conveying rollers are rotatably installed on the feed roller frame. The fixed-length plate is installed on the feed roller frame, and a contact switch is installed in the middle of the fixed-length plate. The contact head of the contact switch faces the shearing machine body, and the contact switch is electrically connected to the shearing machine body and the controller of the motor; the multiple conveying rollers on the feed roller frame convey and support the steel strip, when one end of the steel strip is blocked by the fixed-length plate and contacts the contact switch, the contact switch sends a signal to the motor and the shearing machine body, the motor stops, and the shearing machine body drives the shearing knife group to cut the steel strip, thereby realizing fixed-length and automatic shearing of the steel strip, which has good practicality.

[0010] Preferably, it also includes two slide rails, two sliders, two springs and two limit slides, the two slide rails are respectively installed on both sides of the feed roller frame, the two slide rails are respectively slidably installed on the two slide rails, the fixed length plate is installed on the two slide rails, one end of the two springs is respectively connected to the two slide rails, and the other end of the two springs is connected to an end of the feed roller frame away from the shearing machine body. The two limit slides are respectively slidably installed on the two slide rails, and the two limit slides can be locked on the two slide rails, and the two limit slides are located between the two slide rails and the shearing machine body; after adjusting the positions of the two limit slides on the two slide rails, they are locked, and the elastic force of the two springs elastically presses the two slide rails on the two limit slides, thereby realizing the adjustment of the length of the high-speed guardrail. After the steel strip is cut, the multiple conveying rollers on the feed roller frame convey the steel strip in a direction away from the shearing machine body, so that the steel strip pushes the fixed length plate and the two slide rails to move along the two slide rails, and compresses the two springs, so that the entire steel strip moves to the feed roller frame, which is convenient for high-speed guardrail plate conveying.

[0011] Preferably, it also includes two screws and multiple nuts, the two screws are respectively installed on the two sliders, the fixed-length plate is slidably plug-in connected with the two screws through a bracket, and the multiple nuts are respectively rotatably screwed on the two screws, and the multiple nuts lock the bracket of the fixed-length plate on the two screws; after adjusting the position of the bracket of the fixed-length plate on the two screws, tighten the multiple nuts to lock, thereby adjusting the height of the fixed-length plate, so that the fixed-length plate can block the ends of steel belts of different thicknesses, thereby improving practicality.

[0012] Preferably, it also includes two sliders three, two shafts, two sliders four and two push cylinders two, the two ends of the rear side of the feed roller frame are rotatably connected to the rear sides of the two frames two through a rotating shaft, the two ends of the front side of the feed roller frame are provided with a horizontal slide groove one, the two sliders three are respectively slidably installed in the two slide grooves one of the feed roller frame, the two shafts are respectively horizontally installed on the two sliders three, the two sliders four are respectively rotatably installed on the two shafts, the front sides of the two frames two are provided with a vertical slide groove two, the two sliders four are respectively slidably installed in the two frames two In the slide 2, the fixed ends of the two push cylinders 2 are respectively installed on the two frames 2, and the top ends of the piston rods of the two push cylinders 2 are respectively connected to the two sliders 4; when the steel strip is transported to the feeding roller frame as a whole, the piston rods of the two push cylinders 2 shrink, driving the two sliders 4 to descend along the slide 2 of the two frames 2, and the two sliders 4 drive the front side of the feeding roller frame to descend through the two shaft rods and the two sliders 3, so that the feeding roller frame is tilted, and the two sliders 3 slide in the two slide 1 of the feeding roller frame respectively, and the steel strip slides out along the tilted feeding roller frame to realize automatic unloading.

[0013] Compared with the prior art, the utility model has the following beneficial effects: during operation, the steel strip coil is loaded on the unwinding mechanism, the steel strip is drawn out from the steel strip coil and passes through between the two support rollers and the pressure roller, the steel strip passes between the fixed knife and the upper movable knife of the shearing knife group, the piston rods of the two push cylinders contract to squeeze the pressure roller toward the middle of the two support rollers, thereby rolling the steel strip flat, and the flattened steel strip is conveyed to the shearing machine body, the upper movable knife of the shearing knife group descends, and cooperates with the fixed knife to cut the steel strip, and the cut high-speed guardrail plate is straight without curvature, which is convenient for subsequent extrusion molding and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the axonometric structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the frame 1, support roller, motor, push cylinder 1, pressure roller and door frame;

[0018] Figure 5 It is a structural schematic diagram of the structure of the frame 2, the feed roller frame, the fixed length plate, the contact switch, the slide rail, the slide block 1 and the spring;

[0019] Figure 6 It is a schematic diagram of the structure of the frame 2, the feed roller frame, the slide block 3, the shaft rod 8, the slide block 4 and the push cylinder 2 in the exploded state.

[0020] Markings in the attached drawings: 1. Shearing machine body; 2. Shearing knife group; 3. Unwinding mechanism; 4. Frame one; 5. Plate support roller; 6. Motor; 7. Push cylinder one; 8. Pressure roller; 9. Door frame; 10. Sliding sleeve; 11. Sliding rod; 12. Roller; 13. Grating head; 14. Limiting ring; 15. Bolt one; 16. Frame two; 17. Feeding roller frame; 18. Fixed-length plate; 19. Contact switch; 20. Slide rail; 21. Slider one; 22. Spring; 23. Limiting slider; 24. Screw; 25. Nut; 26. Slider three; 27. Shaft; 28. Slider four; 29. ​​Push cylinder two. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0022] Example 1

[0023] like Figure 1 , Figure 2 and Figure 4 As shown, a high-speed guardrail plate shearing machine comprises a shearing machine body 1, a shearing knife group 2 and an unwinding mechanism 3. The shearing knife group 2 is installed on the shearing machine body 1, and the shearing knife group 2 comprises a lower fixed knife and an upper movable knife. The unwinding mechanism 3 is installed in front of the shearing machine body 1, and the unwinding mechanism 3 is used to load steel coils and convey steel strips to the shearing machine body 1; it also includes a frame 4, two support rollers 5, a motor 6, two push cylinders 7 and a pressure roller 8. The frame 4 is installed between the shearing machine body 1 and the unwinding mechanism 3, the two support rollers 5 are rotatably installed on the frame 4, the motor 6 is installed on the frame 4, the output shaft of the motor 6 is transmission-connected with the support roller 5, the fixed ends of the two push cylinders 7 are respectively installed on both sides of the frame 4, the rotating shafts of the pressure rollers 8 are respectively rotationally connected with the top ends of the piston rods of the two push cylinders 7, and the pressure roller 8 and the two support rollers 5 are arranged in parallel. The pressure roller 8 is located above the middle of the two support rollers 5; it also includes a door frame 9, a sliding sleeve 10, a sliding rod 11, a roller 12 and a grating head 13. The door frame 9 is installed on the frame 4, the door frame 9 is located on the rear side of the support roller 5, the sliding sleeve 10 is installed on the door frame 9, the sliding rod 11 is vertically slidably installed on the sliding sleeve 10, the lower end of the sliding rod 11 is rotatably installed with the roller 12, the roller 12 is in rolling contact with the steel belt, a grating ruler is set on the side wall of the sliding rod 11, and the grating head 13 is installed on the sliding sleeve 10. The grating head 13 detects the up and down displacement of the grating ruler of the sliding rod 11, and the grating head 13 is electrically connected to the controllers of the two push cylinders 7; it also includes a plurality of limit rings 14 and a plurality of bolts 15. The limit rings 14 are installed at both ends of the two support rollers 5 and the pressure roller 8, and the plurality of bolts 15 respectively fasten and lock the plurality of limit rings 14 to the two support rollers 5 and the pressure roller 8.

[0024] Loosen multiple bolts 15 to adjust the positions of multiple limit rings 14, which is suitable for steel strips of different widths. During operation, the steel strip coil is loaded on the unwinding mechanism 3, and the steel strip is pulled out from the steel strip coil and passes between the two support rollers 5 and the pressure roller 8. The inner edges of the multiple limit rings 14 are respectively in contact with the two sides of the steel strip, so that the multiple limit rings 14 limit the steel strip between the two support rollers 5 and the pressure roller 8, thereby improving the stability of the steel strip rolling. The steel strip passes between the fixed knife and the upper movable knife of the shearing knife group 2, and the piston rods of the two push cylinders 7 contract to squeeze the pressure roller 8 toward the middle of the two support rollers 5, and the roller 12 rolls in contact with the steel strip. After the steel strip is rolled by the two support rollers 5 and the push cylinder 7, if the steel strip has an inward curvature, the roller 12 and the slide bar 11 descend. The grating head 13 detects the grating ruler on the slide bar 11 to generate signal one. The controller controls the two push cylinders 7 to drive the pressure roller 8 to descend according to signal one, thereby increasing the rolling force on the steel strip and eliminating the inward curvature of the steel strip; if the steel strip has an outward curvature, the roller 12 and the slide bar 11 rise, and the grating head 13 detects the grating ruler on the slide bar 11 to generate signal two. The controller controls the two push cylinders 7 to drive the pressure roller 8 to rise according to signal two, thereby rolling the steel strip flat. The flattened steel strip is conveyed to the shearing machine body 1, and the upper moving knife of the shearing knife group 2 descends to cooperate with the fixed knife to cut the steel strip. The cut high-speed guardrail plate is straight and has no curvature, which is convenient for subsequent extrusion molding, reduces the rolling force on the steel strip, eliminates the outward curvature of the steel strip, and improves the straightness of the steel strip.

[0025] Example 2

[0026] like Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, it also includes two frames 16, a feed roller frame 17, a fixed length plate 18 and a contact switch 19. The two frames 16 are located at the rear side of the shearing machine body 1, the feed roller frame 17 is installed on the two frames 16, and multiple conveying rollers are rotatably installed on the feed roller frame 17. The fixed length plate 18 is installed on the feed roller frame 17. The contact switch 19 is installed in the middle of the fixed length plate 18, and the contact head of the contact switch 19 faces the shearing machine body 1. The contact switch 19 is electrically connected to the shearing machine body 1 and the controller of the motor 6; it also includes two slide rails 20, two sliders 21, and two springs. Spring 22 and two limit sliders 23, two slide rails 20 are respectively installed on both sides of the feed roller frame 17, two sliders 21 are respectively slidably installed on the two slide rails 20, and the fixed length plate 18 is installed on the two sliders 21. One end of the two springs 22 is connected to the two sliders 21 respectively, and the other end of the two springs 22 is connected to the end of the feed roller frame 17 away from the shearing machine body 1. The two limit sliders 23 are respectively slidably installed on the two slide rails 20. The two limit sliders 23 can be locked on the two slide rails 20. The two limit sliders 23 are located between the two sliders 21 and The shearing machine body 1 also includes two screw rods 24 and multiple nuts 25, the two screw rods 24 are respectively installed on the two sliders 21, the fixed-length plate 18 is connected with the two screw rods 24 through a bracket, and the multiple nuts 25 are respectively rotatably screwed on the two screw rods 24, and the multiple nuts 25 lock the bracket of the fixed-length plate 18 on the two screw rods 24; it also includes two sliders 3 26, two shafts 27, two sliders 4 28 and two push cylinders 29, the two ends of the rear side of the feed roller frame 17 are respectively rotatably connected with the rear sides of the two frames 2 16 through a rotating shaft, and the feed roller frame Horizontal slide grooves 1 are set at both ends of the front side of 17, two sliders 3 26 are respectively slidably installed in the two slide grooves 1 of the feed roller frame 17, two shaft rods 27 are respectively horizontally installed on the two sliders 3 26, two sliders 4 28 are respectively rotatably installed on the two shaft rods 27, vertical slide grooves 2 are set on the front sides of the two frames 2 16, two sliders 4 28 are respectively slidably installed in the slide grooves 2 of the two frames 2 16, the fixed ends of the two push cylinders 29 are respectively installed on the two frames 2 16, and the top ends of the piston rods of the two push cylinders 29 are respectively connected to the two sliders 4 28.

[0027] After adjusting the positions of the two limit sliders 23 on the two slide rails 20, they are locked. The elastic force of the two springs 22 elastically presses the two sliders 21 onto the two limit sliders 23, thereby realizing the adjustment of the length of the high-speed guardrail. After adjusting the position of the bracket of the fixed-length plate 18 on the two screws 24, multiple nuts 25 are tightened to lock it, thereby adjusting the height of the fixed-length plate 18, so that the fixed-length plate 18 can block the ends of steel strips of different thicknesses. Multiple conveyor rollers on the feed roller frame 17 convey and support the steel strip. When one end of the steel strip is blocked by the fixed-length plate 18 and contacts the contact switch 19, the contact switch 19 sends a signal to the motor 6 and the shearing machine body 1, the motor 6 stops, and the shearing machine body 1 drives the shearing knife group 2 to cut the steel strip, thereby realizing the fixed length and automatic shearing of the steel strip. After the steel strip is cut, the multiple conveying rollers on the feed roller frame 17 convey the steel strip in the direction away from the shearing machine body 1, so that the steel strip pushes the fixed-length plate 18 and the two sliders 21 to move along the two slide rails 20, and compresses the two springs 22, so that the entire steel strip moves to the feed roller frame 17. When the steel strip is transported to the feed roller frame 17 as a whole, the piston rods of the two push cylinders 29 contract, driving the two sliders 4 28 to descend along the slide grooves 2 of the two frames 2 16. The two sliders 4 28 drive the front side of the feed roller frame 17 to descend through the two shaft rods 27 and the two sliders 3 26, so that the feed roller frame 17 is tilted, and the two sliders 3 26 slide in the two slide grooves 1 of the feed roller frame 17 respectively, and the steel strip slides out along the inclined feed roller frame 17 to realize automatic unloading.

[0028] like Figures 1 to 6As shown, a high-speed guardrail plate shearing machine of the utility model, when working, first the steel strip coil is loaded on the unwinding mechanism 3, the steel strip is drawn out from the steel strip coil and passes between the two support rollers 5 and the pressure roller 8, and the steel strip passes between the fixed knife and the upper movable knife of the shearing knife group 2, and then the piston rods of the two push cylinders 7 contract to squeeze the pressure roller 8 toward the middle of the two support rollers 5, and the rollers 12 roll in contact with the steel strip to generate an adjustment signal, and the two push cylinders 7 control the lifting and lowering of the two pressure rollers 8 according to the adjustment signal to adjust the flattening effect of the steel strip, and the flattened steel strip is transported to the shearing machine body 1, and the multiple conveying rollers on the feeding roller frame 17 convey and support the steel strip, and then when one end of the steel strip is blocked by the fixed length plate 18 and contacts the contact switch 19, the contact switch 19 sends a signal to the motor 6 and the shearing machine body 1, The motor 6 stops, the upper movable knife of the shearing knife group 2 descends, and cooperates with the fixed knife to cut the steel strip. The multiple conveying rollers on the feed roller frame 17 convey the steel strip in the direction away from the shearing machine body 1, so that the steel strip pushes the fixed-length plate 18 and the two sliders 21 to move along the two slide rails 20, and compresses the two springs 22, so that the entire steel strip moves to the feed roller frame 17. Finally, the piston rods of the two push cylinders 29 contract, driving the two sliders 4 28 to descend along the slide grooves 2 of the two frames 2 16. The two sliders 4 28 drive the front side of the feed roller frame 17 to descend through the two shaft rods 27 and the two sliders 3 26, so that the feed roller frame 17 is tilted, and the two sliders 3 26 slide in the two slide grooves 1 of the feed roller frame 17 respectively, and the steel strip slides out along the inclined feed roller frame 17 to achieve automatic unloading.

[0029] The main functions achieved by this utility model are:

[0030] 1. It can roll the high-speed guardrail flat, making it straight without curvature, which is convenient for subsequent extrusion molding;

[0031] 2. It can automatically adjust the rolling force to improve the straightness of the high-speed guardrail;

[0032] 3. It can cut the plate to a fixed length and adjust the fixed length to cut high-speed guardrail plates of different lengths;

[0033] 4. Capable of automatic unloading.

[0034] A high-speed guardrail plate shearing machine of the utility model has common mechanical installation methods, connection methods or setting methods, which can be implemented as long as they can achieve their beneficial effects; a high-speed guardrail plate shearing machine of the utility model, including a shearing machine body 1, a shearing knife group 2, an unwinding mechanism 3, a support roller 5, a motor 6, a push cylinder 7, a pressure roller 8, a roller 12, a grating head 13, a bolt 15, a feed roller frame 17, a contact switch 19, a slide rail 20, a slider 21, a spring 22, a limit slider 23, a screw 24, a nut 25, a slider three 26, a slider four 28, and a push cylinder two 29, are purchased on the market, and technical personnel in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to pay creative labor.

[0035] All technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high-speed guardrail plate shearing machine, comprising a shearing machine body (1), a shearing knife group (2) and an unwinding mechanism (3), wherein the shearing knife group (2) is installed on the shearing machine body (1), the shearing knife group (2) comprises a lower fixed knife and an upper movable knife, and the unwinding mechanism (3) is installed in front of the shearing machine body (1), and the unwinding mechanism (3) is used to load steel coils and convey steel strips to the shearing machine body (1); characterized in that: The machine also comprises a frame (4), two plate supporting rollers (5), a motor (6), two push cylinders (7) and a pressure roller (8); the frame (4) is mounted between the shearing machine body (1) and the unwinding mechanism (3); the two plate supporting rollers (5) are rotatably mounted on the frame (4); the motor (6) is mounted on the frame (4); the output shaft of the motor (6) is transmission-connected to the plate supporting rollers (5); the fixed ends of the two push cylinders (7) are respectively mounted on both sides of the frame (4); the rotating shaft of the pressure roller (8) is rotationally connected to the top ends of the piston rods of the two push cylinders (7); the pressure roller (8) and the two plate supporting rollers (5) are arranged in parallel; the pressure roller (8) is located above the middle of the two plate supporting rollers (5).

2. A high-speed guardrail plate shearing machine as claimed in claim 1, characterized in that: It also includes a gantry (9), a sliding sleeve (10), a sliding rod (11), a roller (12) and a grating head (13). The gantry (9) is installed on the frame (4). The gantry (9) is located on the rear side of the support roller (5). The sliding sleeve (10) is installed on the gantry (9). The sliding rod (11) is vertically slidably installed on the sliding sleeve (10). The lower end of the sliding rod (11) is rotatably installed with a roller (12). The roller (12) is in rolling contact with the steel belt. A grating ruler is arranged on the side wall of the sliding rod (11). The grating head (13) is installed on the sliding sleeve (10). The grating head (13) detects the up and down displacement of the grating ruler of the sliding rod (11). The grating head (13) is electrically connected to the controllers of the two push cylinders (7).

3. A high-speed guardrail plate shearing machine as claimed in claim 1, characterized in that: It also comprises a plurality of limiting rings (14) and a plurality of bolts (15); both ends of the two supporting plate rollers (5) and the pressure roller (8) are fitted with limiting rings (14); and the plurality of bolts (15) respectively fasten and lock the plurality of limiting rings (14) on the two supporting plate rollers (5) and the pressure roller (8).

4. A high-speed guardrail plate shearing machine as claimed in claim 1, characterized in that: It also includes two frames (16), a feed roller frame (17), a fixed length plate (18) and a contact switch (19), wherein the two frames (16) are located at the rear side of the shearing machine body (1), the feed roller frame (17) is mounted on the two frames (16), a plurality of conveying rollers are rotatably mounted on the feed roller frame (17), the fixed length plate (18) is mounted on the feed roller frame (17), a contact switch (19) is mounted in the middle of the fixed length plate (18), a contact head of the contact switch (19) faces the shearing machine body (1), and the contact switch (19) is electrically connected to the shearing machine body (1) and the controller of the motor (6).

5. A high-speed guardrail plate shearing machine as claimed in claim 4, characterized in that: The invention also comprises two slide rails (20), two sliders (21), two springs (22) and two limit sliders (23); the two slide rails (20) are respectively mounted on both sides of the feed roller frame (17); the two sliders (21) are respectively slidably mounted on the two slide rails (20); the fixed length plate (18) is mounted on the two sliders (21); one end of the two springs (22) is respectively connected to the two sliders (21); the other end of the two springs (22) is connected to one end of the feed roller frame (17) away from the shearing machine body (1); the two limit sliders (23) are respectively slidably mounted on the two slide rails (20); the two limit sliders (23) can be locked on the two slide rails (20); and the two limit sliders (23) are located between the two sliders (21) and the shearing machine body (1).

6. A high-speed guardrail plate shearing machine as claimed in claim 5, characterized in that: The invention also comprises two screw rods (24) and a plurality of nuts (25), wherein the two screw rods (24) are respectively mounted on the two slide blocks (21), the fixed length plate (18) is connected to the two screw rods (24) by sliding insertion through a bracket, the plurality of nuts (25) are respectively rotatably screwed on the two screw rods (24), and the plurality of nuts (25) lock the bracket of the fixed length plate (18) on the two screw rods (24).

7. A high-speed guardrail plate shearing machine as claimed in claim 5, characterized in that: The invention also comprises two sliders 3 (26), two shafts (27), two sliders 4 (28) and two push cylinders 2 (29). The two ends of the rear side of the feeding roller frame (17) are rotatably connected to the rear sides of the two frames 2 (16) through rotating shafts. The two ends of the front side of the feeding roller frame (17) are both provided with horizontal slide grooves 1. The two sliders 3 (26) are respectively slidably installed in the two slide grooves 1 of the feeding roller frame (17). The two shafts (27) are respectively horizontally installed on the two sliders 3 (26). The two sliders 4 (28) are respectively rotatably installed on the two shafts (27). The front sides of the two frames 2 (16) are both provided with vertical slide grooves 2. The two sliders 4 (28) are respectively slidably installed in the slide grooves 2 of the two frames 2 (16). The fixed ends of the two push cylinders 2 (29) are respectively installed on the two frames 2 (16). The top ends of the piston rods of the two push cylinders 2 (29) are respectively connected to the two sliders 4 (28).

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