Double-roller tearing and cutting all-in-one machine and cutting method thereof

Abstract

The invention relates to a double-roller tearing and cutting all-in-one machine and a chopping method thereof and relates to the technical field of chopping machines, the chopping machine comprises a machine body, the machine body comprises a supporting frame, a supporting table is arranged at the upper end of the supporting frame, a chopping frame is hinged to the upper end of the supporting table, and a feeding hopper is detachably connected to the upper end of the chopping frame; the chopping frame is rotatably connected with two chopping rollers, each chopping roller is detachably connected with a plurality of cutters, the cutters on the two chopping rollers are arranged in a staggered mode, and a discharging hopper is arranged on the supporting frame and located below the chopping frame. Materials are placed into the machine body from the feeding hopper, fall between the two chopping rollers and are chopped along with rotation of the two chopping rollers, the chopped materials are discharged out of the discharging hopper, and when a cutter in the machine body needs to be overhauled or replaced, the chopping frame is operated to rotate, workers can conveniently overhaul the chopping rollers and the cutter, and therefore the cutting efficiency is greatly improved. And if a certain cutter is detected to be damaged, the certain cutter can be detached and replaced.

Description

Technical Field

[0001] The present application relates to the technical field of shredders, and in particular to a double-roller tearing and cutting machine and a shredding method thereof. Background Art

[0002] The double roller shredder is a machine used to shred large pieces of material into fine pieces, making the size of the material smaller and easier to handle.

[0003] Related technology can refer to Chinese patent with announcement number CN207357283U, which discloses a waste shredder, including a fan, a protection box, a drive motor, a shredding roller and a shredding blade. An air outlet is installed below the fan, and the fan is fixed to the feed port by a fixing device. A shredding box is fixedly arranged below the feed port, and couplings are arranged on both sides of the shredding box. A coupling is fixedly arranged on the left side of the protection box. A support base is installed below the drive motor, and the drive motor is connected to a pulley, a belt is installed between the pulleys, a support frame is installed above the support base, and a discharge port is arranged below the support frame, a support column is arranged between the support base and the support frame, the shredding roller is fixed inside the shredding box, and a shredding blade is fixedly installed on the shredding roller.

[0004] In the above-mentioned related technologies, in order to facilitate feeding and shredding of materials, a feeding bin is provided at the upper end of the cutter, and a shredding box is installed around the cutter; during the use of the shredder, the blade will wear, resulting in poor shredding effect of the material. If the staff wants to inspect or replace the blade of the shredder, it is necessary to remove the feeding bin and the shredding box in turn, and then inspect the blade, which is less convenient for inspection and maintenance and has a longer downtime; If a blade is damaged, in order to ensure the shredding effect, the entire shredding roller must be replaced, which is costly and complicated to replace. Summary of the invention

[0005] In order to solve the above problems, the present application provides a double-roll tearing and cutting machine and a shredding method thereof.

[0006] In the first aspect, the present application provides a roller tearing and cutting machine, which adopts the following technical solution: A roller tearing and cutting machine comprises a machine body, wherein the machine body comprises a support frame, a support platform is arranged at the upper end of the support frame, a shredding frame is hinged at the upper end of the support platform, a feed hopper is detachably connected to the upper end of the shredding frame, two shredding rollers are rotatably connected to the shredding frame, each shredding roller is detachably connected to a plurality of cutters, the cutters on the two shredding rollers are staggered, a lower hopper is arranged on the support frame, and the lower hopper is located below the shredding frame.

[0007] By adopting the above technical scheme, the material is put into the machine body from the feed hopper, and the material falls between the two shredding rollers. As the two shredding rollers rotate, the material is shredded, and the shredded material is discharged from the lower hopper. The structure is simple and the material shredding is convenient. If it is found that the shredding effect of the material is not good, the cutter in the machine body needs to be repaired or replaced. The shredding frame is operated to rotate. At this time, the shredding frame drives the two shredding rollers to rotate. The staff can easily repair the shredding rollers and the cutter, and the maintenance convenience is relatively high. If it is found that a cutter is damaged, the cutter can be removed and replaced, and the replacement of the cutter is relatively convenient.

[0008] Optionally, a cross bar is provided inside the lower hopper, and a boss is horizontally provided at the upper end of the cross bar, a plurality of clearance grooves 1 are spaced apart on one side in the length direction of the boss, and a plurality of clearance grooves 2 are spaced apart on the other side in the length direction of the boss, and the clearance grooves 1 and the clearance grooves 2 are arranged alternately, and a plurality of cross knives for cooperating with two shredding rollers to shred materials are detachably connected to the upper end of the boss, and the upper end surface of the cross knives is arc-shaped.

[0009] By adopting the above technical scheme, after the material is broken by the cutter, the material moves downward under the action of the shredding roller. When the material moves between the cutter and the cross blade, as the shredding roller continues to rotate and the cutter continues to move, the cutter cooperates with the cross blade to pull the material above downward, thereby increasing the shredding speed of the material above and the cutting effect of the material above. If the material to be cut is a high-fiber material, the cross blade and the cutter cooperate with each other to pull the material while cutting it, and the high-fiber material is shredded instead of torn, thereby reducing the wear on the cutter.

[0010] Optionally, the lower end of the support frame is rotatably connected to two hydraulic cylinders, the two hydraulic cylinders are respectively located at both ends of the length direction of the support frame, the cylinder barrels of the two hydraulic cylinders are rotatably connected to the support frame, and the piston rods of the two hydraulic cylinders are rotatably connected to the shredding frame.

[0011] By adopting the above technical solution, the piston rods of the two hydraulic cylinders are extended to drive the shredding frame to rotate, and then the shredding rollers in the shredding frame are moved. The structure is simple and the driving is convenient. The staff can easily inspect and repair the shredding rollers, which is very convenient.

[0012] Optionally, two driving motors are provided at the upper end of the support frame, and two reducers are provided on the shredding frame, the reducers correspond one-to-one to the driving motors, and the reducers correspond one-to-one to the shredding rollers, the output shafts of the two reducers pass through the shredding frame and are fixedly connected to the axis of the corresponding shredding roller, and the output shaft of the driving motor is detachably connected to the input shaft of the corresponding reducer.

[0013] By adopting the above technical solution, the output shafts of the two driving motors are manipulated to rotate, which drives the input shaft of the reducer to rotate, drives the output shaft of the reducer to rotate, and then drives the two shredding rollers to rotate, which has a simple structure and is easy to drive.

[0014] Optionally, fixed knife rows are provided on both sides of the shredding frame in the length direction, the fixed knife rows are located inside the shredding frame, the fixed knife rows correspond to adjacent shredding rollers one by one, the fixed knife rows include fixed knives and three clearance grooves, the cutting knives are located inside the corresponding three clearance grooves, and the fixed knives extend in the direction close to the shredding roller.

[0015] By adopting the above technical solution, if the material to be shredded falls between the fixed knife and the shredding roller, as the shredding roller rotates, the fixed knife cooperates with the shredding roller to shred the material, thereby increasing the range of the shredding roller to cut the material, thereby improving the efficiency of material cutting.

[0016] Optionally, each of the cutters is provided with a connecting hole, each of the shredding rollers is provided with a plurality of threaded holes, countersunk bolts are passed through the connecting holes, and the countersunk bolts extend into the threaded holes and are threadedly connected to the shredding rollers.

[0017] By adopting the above technical solution, if a cutter is worn and needs to be replaced, the staff can remove the countersunk bolt on the cutter to be replaced, release the fixation of the cutter, and then replace it with a new cutter. The structure is simple and the replacement is convenient.

[0018] Optionally, the shredder frame is hinged on one side of the support platform and is arranged at a hinge part, and one end of the shredder frame away from the hinge part is rotatably connected to two protection rods, and two limit platforms are arranged on the side of the support platform away from the hinge part, and the limit platforms are provided with limit grooves adapted to the lower ends of the protection rods.

[0019] By adopting the above technical solution, when the machine body is being inspected and repaired, the shredding frame rotates. At this time, the protection rod can be inserted into the limit groove to lock the rotation angle of the limit frame to ensure the personal safety of the staff and prevent the shredding frame from falling back and injuring the staff.

[0020] In a second aspect, the present application provides a shredding method, which adopts the following technical solution: A shredding method comprises the following steps: S1: operate the two shredding rollers to rotate towards each other; S2: Put the material from the feed hopper into the double-roll shredder, and the cutter crushes the material; S3: The material is shredded by the cutter and moves downward under the action of the shredding roller; S4: The material moves to the horizontal knife and is clamped between the horizontal knife and the cutting knife. As the cutting knife continues to rotate, the horizontal knife and the cutting knife cooperate with each other to pull and shred the material toward the lower hopper; S5: The material is discharged from the lower hopper.

[0021] Optionally, after step S5, the following steps are further included: S6: If the material discharged from the lower hopper exceeds the preset size of the discharged material, the machine body is operated to stop, and then the piston rods of the two hydraulic cylinders are operated to extend to raise the shredding frame and inspect the cutter and cross knife; If a cutter is found to be damaged, remove the damaged cutter and replace it; If a cross blade is found to be damaged, remove the damaged cross blade and replace it.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Put the material from the feed hopper into the machine body, and the material falls between the two shredding rollers. As the two shredding rollers rotate, the material is shredded, and the shredded material is discharged from the lower hopper. The structure is simple and the material shredding is convenient. If the shredding effect of the material is not good, the cutter in the machine body needs to be repaired or replaced. The shredding frame is operated to rotate. At this time, the shredding frame drives the two shredding rollers to rotate. The staff can easily repair the shredding rollers and cutters, and the maintenance convenience is high. If a cutter is found to be damaged, it can be removed and replaced. It is convenient to replace the cutter. 2. After the material is broken by the cutter, it moves downward under the action of the shredding roller. When the material moves between the cutter and the cross blade, the cutter continues to move as the cutter roller continues to rotate. The cutter cooperates with the cross blade to pull the material above downward, thereby increasing the shredding speed of the material above and the cutting effect of the material above. If the material to be cut is a high-fiber material, the cross blade and the cutter cooperate with each other to pull the material while cutting it. The high-fiber material is shredded instead of torn, thereby reducing the wear on the cutter. 3. If a cutter is worn and needs to be replaced, the staff can remove the countersunk bolt on the cutter to be replaced, release the fixation of the cutter, and then replace it with a new cutter. The structure is simple and the replacement is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the overall structure of a double-roll tearing and cutting machine.

[0024] Figure 2 It is a schematic diagram of the side structure of a double-roll tearing and cutting machine.

[0025] Figure 3 It is a cross-sectional schematic diagram showing a prominent horizontal blade in a double-roll tearing and cutting machine.

[0026] Figure 4 It is a schematic diagram showing the shredding roller in a double-roll tearing and cutting machine.

[0027] Figure 5 yes Figure 4 Schematic diagram of the enlarged portion B.

[0028] Figure 6 yes Figure 3 Enlarged schematic diagram of part A.

[0029] Figure 7 It is a schematic diagram showing a highlighted cross bar in a double-roll tearing and cutting machine.

[0030] Figure 8 It is a schematic diagram showing the hydraulic cylinder in a double-roll tearing and cutting machine.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. Machine body; 2. Support frame; 21. Support platform; 22. Lower hopper; 23. Hydraulic cylinder; 24. Limit platform; 25. Limit slot; 3. Shredding frame; 31. Feed hopper; 32. Shredding roller; 33. Cutter; 331. Connecting hole; 34. Fixed knife row; 35. Fixed knife; 36. Articulated part; 37. Protective rod; 4. Cross bar; 41. Boss; 42. Make way slot one; 43. Make way slot two; 44. Cross knife; 5. Driving motor; 51. Coupling; 52. Reducer. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0033] The embodiment of the present application discloses a roller tearing and cutting machine.

[0034] Reference Figure 1 and Figure 2A roller tearing and cutting machine comprises a machine body 1, the machine body 1 comprises a support frame 2, the upper end of the support frame 2 is provided with a support platform 21, the upper end of the support platform 21 is hinged with a shredding frame 3, the upper end of the shredding frame 3 is detachably connected with a feed hopper 31, the shredding frame 3 is rotatably connected with two shredding rollers 32, each shredding roller 32 is detachably connected with a plurality of cutters 33, the cutters 33 on the two shredding rollers 32 are staggered, a lower hopper 22 is provided on the support frame 2, and the lower hopper 22 is located below the shredding frame 3; when feeding, the material is put into the machine body 1 from the feed hopper 31, and the material falls into the two cutters 33. Between the shredding rollers 32, the material is shredded as the two shredding rollers 32 rotate, and the shredded material is discharged from the lower hopper 22. The structure is simple and the shredding of materials is convenient. If it is found that the shredding effect of the material is not good, when the cutter 33 in the machine body 1 needs to be repaired or replaced, the shredding frame 3 is operated to rotate. At this time, the shredding frame 3 drives the two shredding rollers 32 to rotate. The staff can easily repair the shredding rollers 32 and the cutter 33, and the maintenance convenience is high. If it is found that a cutter 33 is damaged, the cutter 33 can be removed and replaced, and it is convenient to replace the cutter 33.

[0035] Reference Figure 3 and Figure 4 Two driving motors 5 are arranged at the upper end of the support frame 2, one of which is at one end of the support frame 2 in the length direction, and the other is at the other end of the support frame 2 in the length direction. Two reducers 52 are arranged on the shredding frame 3, and the reducers 52 correspond to the driving motors 5 one by one, and the reducers 52 correspond to the shredding rollers 32 one by one. The output shafts of the two reducers 52 pass through the shredding frame 3 and are fixedly connected to the axis of the corresponding shredding rollers 32. The output shafts of the driving motors 5 and the input shafts of the corresponding reducers 52 are key-connected with a coupling 51; before shredding the materials, by operating the output shafts of the two driving motors 5 to rotate, the input shaft of the reducer 52 is driven to rotate, and the output shaft of the reducer 52 is driven to rotate, and then the two shredding rollers 32 are driven to rotate in the direction of approaching each other, the structure is simple, and the driving is convenient.

[0036] Reference Figure 3 and Figure 5, put the material from the feed hopper 31 into the machine body 1, as the two shredding rollers 32 rotate in the direction of approaching each other, the cutters 33 on the two shredding rollers 32 cooperate with each other to shred the material; fixed knife rows 34 are provided on both sides of the length direction of the shredding frame 3, the fixed knife rows 34 are all located inside the shredding frame 3, the fixed knife rows 34 correspond to the adjacent shredding rollers 32 one by one, the fixed knife rows 34 include fixed knives 35 and give way grooves three, the cutters 33 are all located inside the corresponding give way grooves three, and the fixed knives 35 extend in the direction close to the shredding rollers 32; if the material to be shredded falls between the fixed knives and the shredding rollers 32, as the shredding rollers 32 rotate, the fixed knives 35 cooperate with the shredding rollers 32 to shred the material, thereby increasing the range of the shredding rollers 32 for cutting the material, thereby improving the efficiency of cutting the material, and the cut material falls from the lower hopper 22 and is discharged to the outside of the machine body 1.

[0037] Reference Figure 3 and Figure 6 A cross bar 4 is horizontally arranged inside the lower hopper 22 , and a boss 41 is horizontally arranged at the upper end of the cross bar 4 .

[0038] Reference Figure 3 and Figure 7 A plurality of clearance grooves 42 are spaced apart on one side of the boss 41 in the length direction, and a plurality of clearance grooves 43 are spaced apart on the other side of the boss 41 in the length direction. The clearance grooves 42 and the clearance grooves 43 are arranged alternately. The upper end of the boss 41 is detachably connected with a plurality of transverse knives 44 for cooperating with the two shredding rollers 32 to shred materials, and the upper end surface of the transverse knife 44 is arc-shaped.

[0039] Reference Figure 3 and Figure 6 , the material moves downward under the action of the two shredding rollers 32, and as the material moves between the cutter 33 and the cross blade 44, the cutter 33 and the cross blade 44 clamp the material, and as the shredding roller 32 continues to rotate and the cutter 33 continues to move, the cutter 33 cooperates with the cross blade 44 to pull the material above the cross blade 44 downward, thereby increasing the shredding speed of the material above the cross blade 44 and the cutting effect of the material above; if the material to be cut is a high-fiber material, the cross blade 44 and the cutter 33 cooperate with each other to cut the material and pull the material at the same time, and the high-fiber material is shredded instead of torn, thereby reducing the wear on the cutter 33.

[0040] Reference Figure 1 and Figure 2The cut materials fall from the lower hopper 22 and are discharged to the outside of the machine body 1. The staff can regularly check the shredded materials. If the shredding effect of the materials is not good, the machine body 1 can be repaired. First, the two drive motors 5 are released from the support frame 2, and then the drive motors 5 are moved away from the reducer 52. At this time, the drive motors 5 are disconnected from the coupling 51.

[0041] Reference Figure 2 and Figure 8 The lower end of the support frame 2 is rotatably connected to two hydraulic cylinders 23, and the two hydraulic cylinders 23 are respectively located at the two ends of the support frame 2 in the length direction. The cylinder barrels of the two hydraulic cylinders 23 are rotatably connected to the support frame 2, and the piston rods of the two hydraulic cylinders 23 are rotatably connected to the chopping frame 3. The chopping frame 3 is hinged to one side of the support platform 21 and is arranged at a hinge part 36. The side of the chopping frame 3 away from the hinge part 36 is detachably connected to the support platform 21; the chopping frame 3 is disconnected from the support platform 21, and then the piston rods of the two hydraulic cylinders 23 are extended by operating the piston rods, thereby driving the chopping frame 3 to rotate, and at the same time driving the chopping roller 32 located in the chopping frame 3 to move, and at the same time driving the feed hopper 31 and the two reducers 52 to move.

[0042] In this embodiment, the shredder frame 3 and the support platform 21 are connected by bolts. The shredder frame 3 and the support platform 21 may also be connected by other means.

[0043] Reference Figure 1 and Figure 2 , one end of the shredding frame 3 away from the hinged portion 36 is rotatably connected with two protection rods 37, and two limit platforms 24 are arranged on the side of the support platform 21 away from the hinged portion 36, and a limit groove 25 adapted to the lower end of the protection rod 37 is opened on the limit platform 24; as the shredding frame 3 rotates to a certain angle, the protection rod 37 can be inserted into the limit groove 25, and the piston rod of the hydraulic cylinder 23 can be controlled to stop extending, and the rotation angle of the limit frame is locked. If the hydraulic cylinder 23 fails and the piston rod fails, the protection rod 37 can support the shredding frame 3 to ensure the personal safety of the staff and prevent the shredding frame 3 from falling back and injuring the staff.

[0044] Reference Figure 1 and Figure 5After the shredding frame 3 is opened, the staff can easily inspect and repair the cutters 33 and the cross knives 44 on the shredding roller 32; each cutter 33 is provided with a connecting hole 331, and each shredding roller 32 is provided with a plurality of threaded holes, and a countersunk bolt is passed through the connecting hole 331, and the countersunk bolt extends into the threaded hole and is threadedly connected to the shredding roller 32. If a cutter 33 is found to be damaged or worn and needs to be replaced, the staff can remove the countersunk bolt on the cutter 33 to be replaced, release the fixation of the cutter 33, and then replace the new cutter 33. The structure is simple and the replacement is convenient.

[0045] Reference Figure 6 and Figure 7 A connecting hole 331 is also provided on the cross blade 44, and a threaded hole is also provided on the boss 41. The cross blade 44 and the boss 41 are fixed by countersunk bolts. If a cross blade 44 is found to be worn and needs to be replaced, the staff can remove the countersunk bolt on the cross blade 44 to be replaced, release the fixation of the cross blade 44, and then replace the new cross blade 44 and fix it on the boss 41. The structure is simple and the replacement is convenient.

[0046] The working principle of a roller tearing and cutting machine according to an embodiment of the present application is as follows: the output shafts of the two driving motors 5 are operated to rotate, thereby driving the output shaft of the reducer 52 to rotate, thereby driving the two shredding rollers 32 to rotate, and putting the material from the feed hopper 31 into the machine body 1. The material falls between the two shredding rollers 32 or between the shredding rollers 32 and the fixed knife due to gravity. The two shredding rollers 32 cooperate with each other, and the cutter 33 cuts the material. The two fixed knives cooperate with the shredding rollers 32 of their teammates to cut the material. The material between the two shredding rollers 32 moves toward the lower hopper 22 under the action of the two shredding rollers 32. When it moves to between the cutter 33 and the cross knife 44, the cutter 33 and the cross knife 44 clamp the material. As the shredding rollers 32 continue to rotate, the cutter 33 continues to move, and the cutter 33 and the cross knife 44 clamp the material. 4 cooperates with each other, thereby pulling the material located above downward, thereby increasing the shredding speed of the material above, and also improving the cutting effect of the material above; if the cut material is a high-fiber material, the cross blade 44 cooperates with the cutter 33 to cut the material and pull the material at the same time, and the high-fiber material is shredded instead of torn, thereby reducing the wear of the cutter 33; if the staff needs to inspect the cutter 33 and the cross blade 44, the drive motor 5 and the coupling 51 are released, and then the piston rods of the two hydraulic cylinders 23 are operated to extend, thereby driving the shredding frame 3 to rotate, and then the two protection rods 37 are inserted into the limit groove 25, and then the staff can check the cutter 33 and the cross blade 44, the convenience of inspecting the body 1 is high, and the downtime of the body 1 is short.

[0047] The present application also discloses a shredding method, comprising the following steps: S1: operating the two shredding rollers 32 to rotate in a direction close to each other; S2: Put the material from the feed hopper 31 into the machine body 1, and the cutter 33 crushes the material; S3: The material is chopped by the cutter 33 and moves downward under the action of the chopped roller 32; S4: the material moves to the horizontal blade 44, and the material is clamped between the horizontal blade 44 and the cutter 33. As the cutter 33 continues to rotate, the horizontal blade 44 and the cutter 33 cooperate with each other to pull and shred the material in the direction close to the lower hopper 22; S5: The material is discharged from the lower hopper 22; S6: If the material discharged from the lower hopper 22 exceeds the preset size of the discharged material, the machine body 1 is operated to stop, and then the piston rods of the two hydraulic cylinders 23 are operated to extend, the shredder frame 3 is raised, and the cutter 33 and the horizontal knife 44 are inspected; If a cutter 33 is found to be damaged, the damaged cutter 33 is removed for replacement; the countersunk bolts used to fix the damaged cutter 33 are removed to release the fixation of the cutter 33, and then a new cutter is installed on the shredding roller 32 using the countersunk bolts.

[0048] If find that a certain cross blade 44 is damaged, the damaged cross blade 44 is disassembled and replaced. The countersunk bolt that is used to fix the damaged cross blade 44 is taken off, and the fixing of this cross blade 44 is removed, and then the countersunk bolt is utilized that new cross blade 44 is installed on the boss 41.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A roller tearing and cutting machine, comprising a machine body (1), characterized in that: The machine body (1) comprises a support frame (2), the upper end of the support frame (2) is provided with a support platform (21), the upper end of the support platform (21) is hinged with a shredding frame (3), the upper end of the shredding frame (3) is detachably connected with a feed hopper (31), the shredding frame (3) is rotatably connected with two shredding rollers (32), each shredding roller (32) is detachably connected with a plurality of cutters (33), the cutters (33) on the two shredding rollers (32) are staggered, and a lower hopper (22) is provided on the support frame (2), and the lower hopper (22) is located below the shredding frame (3).

2. The roller tearing and cutting machine according to claim 1, characterized in that: A cross bar (4) is arranged inside the lower hopper (22), and a boss (41) is horizontally arranged at the upper end of the cross bar (4). A plurality of first clearance grooves (42) are spaced apart on one side of the boss (41) in the length direction, and a plurality of second clearance grooves (43) are spaced apart on the other side of the boss (41) in the length direction. The first clearance grooves (42) and the second clearance grooves (43) are arranged alternately. The upper end of the boss (41) is detachably connected with a plurality of cross knives (44) for cooperating with the two shredding rollers (32) to shred materials, and the upper end surface of the cross knives (44) is arranged in an arc shape.

3. The roller tearing and cutting machine according to claim 1, characterized in that: The lower end of the support frame (2) is rotatably connected to two hydraulic cylinders (23), the two hydraulic cylinders (23) are respectively located at two ends of the support frame (2) in the length direction, the cylinder barrels of the two hydraulic cylinders (23) are rotatably connected to the support frame (2), and the piston rods of the two hydraulic cylinders (23) are rotatably connected to the shredding frame (3).

4. The roller tearing and cutting machine according to claim 1, characterized in that: Two driving motors (5) are arranged at the upper end of the support frame (2), and two reducers (52) are arranged on the shredding frame (3), and the reducers (52) correspond to the driving motors (5) one by one, and the reducers (52) correspond to the shredding rollers (32) one by one, and the output shafts of the two reducers (52) pass through the shredding frame (3) and are fixedly connected to the axis of the corresponding shredding rollers (32), and the output shaft of the driving motor (5) is detachably connected to the input shaft of the corresponding reducer (52).

5. The roller tearing and cutting machine according to claim 1, characterized in that: Fixed knife rows (34) are arranged on both sides of the shredding frame (3) in the length direction. The fixed knife rows (34) are located inside the shredding frame (3). The fixed knife rows (34) correspond to adjacent shredding rollers (32) one by one. The fixed knife rows (34) include fixed knives (35) and three clearance grooves. The cutting knives (33) are located inside the corresponding three clearance grooves. The fixed knives (35) extend in a direction close to the shredding rollers (32).

6. The roller tearing and cutting machine according to claim 1, characterized in that: Each of the cutters (33) is provided with a connection hole (331), and each of the shredding rollers (32) is provided with a plurality of threaded holes. A countersunk bolt is passed through the connection hole (331), and the countersunk bolt extends into the threaded hole and is threadedly connected to the shredding roller (32).

7. The roller tearing and cutting machine according to claim 1, characterized in that: The chopping frame (3) is hinged to one side of the support platform (21) and is arranged on a hinged portion (36); one end of the chopping frame (3) away from the hinged portion (36) is rotatably connected to two protection rods (37); and two limit platforms (24) are arranged on one side of the support platform (21) away from the hinged portion (36); and the limit platforms (24) are provided with limit grooves (25) adapted to the lower ends of the protection rods (37).

8. A chopping method, characterized in that: Using the roller tearing and cutting machine as claimed in claim 2 to shred materials comprises the following steps: S1: operating the two shredding rollers (32) to rotate in a direction approaching each other; S2: Put the material from the feed hopper (31) into the machine body (1), and the cutter (33) crushes the material; S3: the material is chopped by the cutter (33), and the material moves downward under the action of the chopped roller (32); S4: the material moves to the horizontal blade (44), and the material is clamped between the horizontal blade (44) and the cutting blade (33). As the cutting blade (33) continues to rotate, the horizontal blade (44) and the cutting blade (33) cooperate with each other to pull and shred the material in a direction close to the lower hopper (22); S5: The material is discharged from the lower hopper (22).

9. A shredding method according to claim 8, characterized in that: After step S5, the following steps are also included: S6: If the material discharged from the lower hopper (22) exceeds the preset size of the discharged material, the machine body (1) is operated to stop, and then the piston rods of the two hydraulic cylinders (23) are operated to extend to raise the shredder frame (3) and inspect the cutter (33) and the cross blade (44); If a cutter (33) is found to be damaged, the damaged cutter (33) is removed and replaced; If a certain cross blade (44) is found to be damaged, the damaged cross blade (44) is disassembled and replaced.

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