Double-pushing type shredding machine and pushing method

Abstract

The invention relates to the technical field of shredding machines, and particularly discloses a double-material-pushing type shredding machine which comprises a frame body and a first driving part, a knife roll is rotationally arranged on the frame body, and the first driving part is used for crushing external materials when the knife roll works; two material pushing modules are further arranged on the frame body, each material pushing module comprises a first plate body used for pushing materials and a second driving part used for driving the first plate body to be close to or away from the knife roll, and the two material pushing modules push external materials to the knife roll from different directions or positions through a double-material-pushing structure; materials can enter the working area of the knife roll more evenly and rapidly, and the knife roll is assisted in crushing operation. The double-material-pushing type shredding machine has the technical effects that a more efficient and stable material conveying and crushing process is realized, the overall crushing efficiency of the double-material-pushing type shredding machine is improved, the problem of low crushing efficiency caused by non-uniform material distribution or unsmooth feeding is reduced, and continuous and stable operation of the machine is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of shredders, and in particular discloses a double-pushing shredder and a pushing method. Background Art

[0002] A shredder is a machine used for coarse crushing, generally used to process unprocessed raw materials or scraps, recycling and regeneration industries, to make them smaller in size. Compared with other crushers, it has a lower blade speed, lower noise and lower energy consumption.

[0003] In the field of material handling, shredders are an important piece of equipment widely used to crush various materials for purposes such as volume reduction and recycling. Traditional shredders typically only have a single crushing function, relying on the rotation of a blade roller to crush incoming material. However, in actual use, materials entering the shredder are often unevenly distributed, and some materials may not make timely and effective contact with the blade roller, resulting in low crushing efficiency and unsatisfactory crushing results. Therefore, a dual-push shredder and a pushing method are provided to address this issue. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the present invention aims to provide a double-pushing shredder and a pushing method.

[0005] To achieve the above-mentioned purpose, the present invention provides a double-pushing shredder, comprising a frame and a first driving member, wherein a knife roller is rotatably provided on the frame, and the first driving member is used for the knife roller to work and crush external materials; a pushing module is also provided on the frame, and the pushing module comprises a first plate for pushing materials and a second driving member for driving the first plate to approach or move away from the knife roller, and there are two pushing modules.

[0006] Preferably, a bracket portion is provided on the frame body and is tilted relative to the horizontal base surface. The knife roller is located at the lower end of the bracket portion, and the pushing module is slidably provided on the end of the bracket portion away from the knife roller. Through the tilted bracket portion, gravity is used to assist the material in moving toward the knife roller, thereby reducing the risk of material accumulation and blockage; the pushing module is slidably provided at the end away from the knife roller, which facilitates pushing the material from the position away from the knife roller to the knife roller, thereby realizing efficient material transportation and crushing, and improving the crushing efficiency and the smoothness of equipment operation.

[0007] Preferably, a rack and a protrusion are vertically arranged on the first plate body, and the size of the protrusion protruding from the end face of the first plate body is not equal to the size of the rack protruding from the end face of the first plate body. The setting of the rack cooperates with the driving mechanism to realize the precise movement of the pushing module; the protruding size of the protrusion is not larger than the rack, which ensures the normal operation of the rack during the pushing process, realizes the synergistic effect of pushing and preliminary crushing, and improves the crushing effect.

[0008] Preferably, a second plate body is provided on the first plate body, the length direction of the second plate body intersects with the length direction of the first plate body, a bearing is provided on the second plate body, two strip members are provided on the bracket part, and a slide groove for accommodating the bearing is formed between the two strip members. The cross setting of the second plate body and the first plate body, and the cooperation between the bearing and the slide groove provide a stable sliding track for the pushing module, ensuring that the pushing module can slide smoothly along the predetermined path, reducing friction and wear during the sliding process, and improving the reliability and service life of the equipment.

[0009] Preferably, a third plate body is also provided on the first plate body, the second plate body and the third plate body are respectively provided at both ends in the length direction of the first plate body, the third plate body is provided with a first limit block and a second limit block, the first limit block is provided with a limit rod, and the limit rod is respectively provided with a first limit block and a second limit block of two pushing modules. The third plate body and the first limit block and the second limit block thereon, as well as the setting of the limit rod provide a precise limiting function for the pushing module, ensuring that the pushing module will not exceed the predetermined range during the sliding process, thereby ensuring the safe operation of the equipment and the accuracy of the pushing effect.

[0010] Preferably, the first limit block and the second limit block are respectively fixed and slidably arranged relative to the limit rod, and a disk body is provided at both ends of the limit rod in the length direction. The diameter of the disk body is larger than the diameter of the limit rod. The first limit block is fixed and the second limit block is sliding, so that the pushing module has a certain adjustment space during the sliding process to adapt to the pushing requirements of different materials; the disk body is used to prevent the limit block from falling off the limit rod, thereby enhancing the stability of the limit structure and ensuring the precise limitation of the pushing module.

[0011] Preferably, two protrusions are provided on one end of the first plate body close to the bearing, and the two protrusions are respectively used to be accommodated between the two strips and between the strip and the bracket part. The length dimensions of the two protrusions are not equal, and the length dimension of the protrusion accommodated between the two strips is not greater than the diameter dimension of the bearing. The setting of the protrusions further enhances the connection stability between the pushing module and the bracket part, and prevents the pushing module from offsetting or shaking during the sliding process; the design of protrusions of different lengths enables the pushing module to better adapt to the structure of the bracket part during the sliding process, ensuring the smoothness of sliding; the length limit of the protrusion accommodated between the two strips ensures the normal fit between the bearing and the slide groove, and does not affect the sliding of the pushing module.

[0012] Preferably, the two pushing modules are slidingly arranged, and the two sets of bearings are respectively arranged in the width direction of the two pushing modules away from one end portion, and the second driving member is provided with two for separately controlling the corresponding pushing modules. The independent sliding arrangement of the two pushing modules and the corresponding second driving members enable the equipment to flexibly adjust the pushing speed and force according to actual needs, and also realize the differentiated operation of the two pushing modules, thereby improving the adaptability and crushing efficiency of the equipment; the arrangement of the bearings ensures the smooth sliding of the pushing modules.

[0013] Preferably, an opening and closing module is provided on the bracket portion, and the opening and closing module includes a limit plate rotatably provided on the bracket portion and a third driving member for driving the limit plate to rotate, and the rotation axis of the limit plate is located at the end of the limit plate away from the knife roller.

[0014] Preferably, a pushing method of a double-pushing shredder comprises the following steps:

[0015] S1: Ensure that the double-push shredder is installed firmly, the frame is placed steadily, and all components are connected reliably.

[0016] S2: Check that the first driving member is in normal working condition and can provide sufficient power to the knife roller to achieve the function of crushing external materials.

[0017] S3: Confirm that the two pushing modules are respectively installed on the end of the bracket away from the knife roller, and the sliding settings of the two pushing modules are normal, and the second driving parts are well connected to the corresponding pushing modules, and can independently control the corresponding pushing modules to move.

[0018] S4: Check that the first plate and its related components (such as the rack, protrusions, second plate, and third plate) in the pusher module are correctly installed and functioning properly. Ensure that the bearing on the second plate is in good working condition and can slide smoothly in the slide groove formed between the two strips on the bracket; the first limit block, second limit block, limit rod and other components on the third plate are firmly installed, and the discs at both ends of the limit rod in the longitudinal direction can effectively limit the position.

[0019] S5: Confirm that the two protrusions on the first plate are installed in the correct position and can be accommodated between the two strips and between the strip and the bracket respectively, and the length direction of the protrusion accommodated between the two strips is not greater than the diameter of the bearing to ensure smooth sliding of the pushing module.

[0020] S6: Check that the limit plate in the opening and closing module is rotatably mounted on the bracket, with the axis of rotation located at the end of the limit plate away from the blade roller and securely connected to the block. Confirm that the extension rod and protrusion on the block are correctly installed, and that the housing on the bracket has a first arc-shaped groove for the protrusion to cooperate with. Ensure that the limit plate can rotate normally under the drive of the third drive member.

[0021] S7: Confirm that the third driving member is installed correctly, and both ends are rotatably set on the limit plate and the frame respectively, and a buffer is set on the end of the third driving member for contacting the bottom surface of the frame to reduce vibration and impact during operation.

[0022] S8: Start the third driving member to shrink, driving the limiting plate to rotate around the rotation axis.

[0023] S9: After the limit plate rotates into place and the channel is fully opened, the action of the third driving member is stopped.

[0024] S10: Add an appropriate amount of material to be crushed into the hopper.

[0025] S11: According to the material distribution and work requirements, choose to control one of the pushing modules separately or control both pushing modules at the same time to perform the pushing operation.

[0026] S12: When a pusher module is individually controlled, the corresponding second driver is activated, driving the first plate to slide along the bracket toward the blade roller. During this sliding process, the bearing on the second plate rolls within the chute formed between the two strips, ensuring smooth and stable sliding of the pusher module. Simultaneously, two protrusions on the first plate slide between the two strips and between the strip and the bracket, respectively, providing auxiliary guidance and limiting functions.

[0027] S13: The rack and protrusion on the first plate body come into contact with the material during the pushing process, pushing the material toward the knife roller. The size of the protrusion protruding from the end face of the first plate body is not equal to the size of the rack protruding from the end face of the first plate body, so as to ensure the pushing effect while avoiding excessive squeezing or damage to the material.

[0028] S14: When the pushing module pushes the material to a suitable position, the second driving member stops moving and maintains the position of the first plate.

[0029] S15: If it is necessary to control two pushing modules to perform pushing operations at the same time, the two second driving members are started at the same time, and the two pushing modules slide toward the knife roller at the same time in the same manner as described above to push the material toward the knife roller.

[0030] S16: The first driving member drives the cutter roller to rotate to continuously crush the material.

[0031] S17: During the crushing process, the position of the pushing module can be adjusted in time according to the material crushing situation and actual needs. By controlling the action of the second driving member, the first plate body can continue to slide toward the direction close to the knife roller to further push the material and ensure that the material is fully crushed; or the first plate body can be slid away from the knife roller to adjust the pushing force and position.

[0032] S18: When the material is crushed, the action of the first driving member is stopped, so that the knife roller stops rotating.

[0033] S19: The second driving member is activated to reverse the movement, driving the first plate to slide along the bracket portion away from the knife roller, so that the pusher module is reset to its initial position. During the reset process, each component moves in the reverse direction of the pusher process, ensuring that the pusher module returns to its initial position smoothly and accurately.

[0034] S20: After the pushing module is completely reset, the action of the second driving member is stopped.

[0035] S21: The third driving member is activated again, extending it, driving the limit plate to rotate in the opposite direction about the rotation axis, closing the passage between the hopper and the cutter roller, and preventing the crushed material from splashing or uncrushed material from accidentally entering the working area of ​​the cutter roller. During the rotation of the limit plate, the extension rod on the block drives the protrusion to slide in the opposite direction within the arc-shaped first groove on the housing, ensuring smooth and accurate rotation of the limit plate. The limit plate completely closes the passage, and the third driving member stops.

[0036] S22: If the material crushing operation needs to be continued, the above steps can be repeated to achieve continuous pushing and crushing of the double-pushing shredder.

[0037] The beneficial effects of the present invention are as follows: the dual-push structure pushes external materials toward the cutter roller 3 from different directions or positions, allowing the materials to enter the working area of ​​the cutter roller 3 more evenly and quickly, assisting the cutter roller 3 in its crushing operation. Its technical effect is to achieve a more efficient and stable material conveying and crushing process, improving the overall crushing efficiency of the dual-push shredder, reducing the problem of low crushing efficiency caused by uneven material distribution or poor feeding, ensuring the continuous and stable operation of the machine, and resolving the problem that, in the case of a single-push mechanism, the cutter roller 3 may be subjected to a large instantaneous load due to the concentrated entry of materials, resulting in increased equipment vibration and accelerated wear of components. The dual-push module 4 enables the materials to enter the cutter roller 3 more evenly, dispersing the crushing load on the cutter roller 3. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is one of the schematic diagrams of the main structure of the present invention;

[0039] Figure 2 This is the second schematic diagram of the main structure of the present invention;

[0040] Figure 3 This is one of the schematic plan views of the internal structure of the body of the present invention;

[0041] Figure 4 It is a schematic diagram of the pusher module structure in reverse rear view of the present invention;

[0042] Figure 5 This is a schematic diagram of the front and reverse decomposition of the pusher module structure of the present invention;

[0043] Figure 6 This is a schematic diagram of the front and reverse sides of the pusher module structure of the present invention;

[0044] Figure 7 It is a rear view schematic diagram of the pusher module structure of the present invention;

[0045] Figure 8 This is a schematic diagram of the opening and closing module structure of the present invention;

[0046] Figure 9 This is a schematic diagram of the third plate bolt installation of the present invention;

[0047] Figure 10 This is the second schematic plan view of the internal structure of the body of the present invention.

[0048] Reference numerals include:

[0049] 1. Frame; 2. First drive member; 3. Cutter roller; 4. Pusher module; 5. Opening and closing module; 6. Fixed knife assembly; 11. Hopper; 12. Strip member; 13. Bracket; 14. First cover; 15. Unloading member; 16. Handle member; 17. Support member; 18. Second cover; 19. Locking member; 110. First scraper; 111. Second scraper; 21. Gearbox; 41. First plate; 42. Rack; 43. Protrusion; 44. Second plate; 45. Third plate; 46. Fourth plate; 47. Bearing; 48. First limit block; 49. Limit rod; 410. Disc; 411. Second limit block; 412. Protrusion; 413. Second driving member; 51. Limit plate; 52. Third driving member; 53. Block; 54. Extension rod; 55. Shell; 56. First slot; 57. Stop member. DETAILED DESCRIPTION

[0050] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0051] See also Figures 1 to 10 As shown, a double-pushing shredder of the present invention includes a frame 1 and a first driving member 2. A knife roller 3 is rotatably provided on the frame 1, and the first driving member 2 is used for the knife roller 3 to work and crush external materials; a pushing module 4 is also provided on the frame 1, and the pushing module 4 includes a first plate 41 for pushing materials and a second driving member 413 for driving the first plate 41 to approach or move away from the knife roller 3. There are two pushing modules 4.

[0052] Specifically, in the case of single pushing, the cutter roller 3 may be subjected to a large instantaneous load due to the concentrated entry of materials, resulting in increased equipment vibration and accelerated wear of parts. The double pushing module 4 allows the material to enter the cutter roller 3 more evenly, dispersing the crushing load of the cutter roller 3, reducing the impact of the instantaneous load on the equipment, extending the service life of equipment parts, and reducing equipment maintenance costs and downtime. Since the material distribution is more even and the crushing load is more dispersed, the impact and vibration to which the equipment is subjected during operation are reduced, and the operation is more stable, reducing the risk of equipment failure caused by excessive vibration, ensuring the continuous and stable operation of the machine, and improving the reliability and continuity of production. The core energy efficiency indicators are as follows:

[0053] Double-push shredder: The measured unit energy consumption is 3.2-4.8kWh / t (taking the processing of mixed domestic waste as an example, including the energy consumption of the pushing system).

[0054] Comparison of similar products:

[0055] Hammer mill (HSLT): 6-22kWh / t

[0056] Shearing crusher (LSHT): 3-11kWh / t

[0057] Traditional single-push shredder: 5.5-7.5kWh / t

[0058] Improved energy efficiency: Compared with traditional single-push crushers, energy consumption is reduced by 30%-40%; close to the lower limit of shear crushers, but crushing efficiency is increased by 20%.

[0059] Compared with similar products, this product has low energy consumption, is green and environmentally friendly, and can contribute to the country's resource recycling and environmental protection.

[0060] Specifically, the dual-push structure pushes external materials toward the cutter roller 3 from different directions or positions, allowing the materials to enter the working area of ​​the cutter roller 3 more evenly and quickly, assisting the cutter roller 3 in its crushing operation. The technical effect is to achieve a more efficient and stable material conveying and crushing process, improving the overall crushing efficiency of the dual-push shredder, reducing the problem of low crushing efficiency caused by uneven material distribution or poor feeding, ensuring the continuous and stable operation of the machine, and resolving the problem that, in the case of a single-push mechanism, the cutter roller 3 may be subjected to a large instantaneous load due to the concentrated entry of materials, resulting in increased equipment vibration and accelerated component wear. The dual-push module 4 enables materials to enter the cutter roller 3 more evenly, dispersing the crushing load on the cutter roller 3.

[0061] Specifically, the frame 1 is also provided with a fixed knife group 6 for use with the knife roller 3. The fixed knife group 6 is the existing technology. The fixed knife group 6 is fixedly set on the frame 1 and cooperates with the rotating knife roller 3. When the knife roller 3 crushes the material, the fixed knife group 6 is used to provide auxiliary shearing and tearing effects, helping the knife roller 3 to crush the material more effectively, enhance the crushing effect, and further improve the crushing capacity and efficiency of the shredder.

[0062] Specifically, the frame 1 is provided with a bracket portion 13 which is tilted relative to the horizontal base surface and the frame 1, the knife roller 3 is located at the lower end of the bracket portion 13, and the pushing module 4 is slidingly arranged on the end of the bracket portion 13 away from the knife roller 3. Through the tilted bracket portion 13, gravity is used to assist the material in moving toward the knife roller 3, reducing the risk of material accumulation and blockage; the pushing module 4 is slidingly arranged at the end away from the knife roller 3, which is convenient for pushing the material from the position away from the knife roller 3 to the knife roller 3, thereby realizing efficient material transportation and crushing, and improving the crushing efficiency and the smoothness of equipment operation.

[0063] Specifically, a hopper 11 for feeding is provided on the bracket part 13. The hopper 11 is located at the lower end of the bracket part 13, and effectively utilizes the principle of gravity to allow external materials to naturally slide or roll into the hopper 11, making it convenient for materials to enter the shredder; at the same time, the hopper 11 at a lower position also facilitates the direct pouring of materials from other equipment or transportation tools, simplifies the feeding operation process, and achieves the effect of reducing the difficulty of feeding and improving the convenience of feeding, which in turn helps to improve the working efficiency of the entire shredder and reduce problems such as production delays caused by inconvenient feeding.

[0064] Specifically, in the second embodiment, the hopper 11 can be sealed, and the dust concentration can be reduced to less than 10 mg / m 3 .

[0065] Specifically, vertical strip transparent observation windows are provided on both sides of the hopper 11 along the width direction of the bracket part 13, so that the operator can visually observe the accumulation of materials in the hopper 11, the feeding status and whether there are abnormal conditions such as blockage from different angles, so that the operator can grasp the dynamics of the materials in the hopper 11 in real time, and take corresponding measures in time, such as adjusting the feeding speed, clearing the blockage, etc., to ensure the stable operation of the shredder, avoid equipment failure or production interruption due to material problems, and improve the reliability of equipment operation and production efficiency.

[0066] Specifically, a strip-shaped transparent observation window is set on the outside of the hopper 11 through external bolts. The bolt connection method can not only ensure that the observation window is firmly installed on the outside of the hopper 11, making it convenient for operators to check the internal situation of the hopper at any time, but also facilitate the subsequent disassembly and replacement of the observation window. For example, when the observation window is damaged or blurred, which affects the observation effect, it can be quickly removed for repair or replacement; it ensures that the observation window is firmly installed, ensures the normal function of the observation function, and facilitates equipment maintenance and maintenance, which helps to reduce equipment maintenance costs and extend the overall service life of the shredder.

[0067] Specifically, the hopper 11 is further provided with a strip-shaped slot for observation through a strip-shaped transparent observation window, and an inclined slot connected to the strip-shaped slot is provided at the bottom of the strip-shaped slot. The inclined slot is used to prevent the accumulation of materials from blocking the observation line of the transparent observation window. The strip-shaped slot provides an observation channel for the strip-shaped transparent observation window, so that the operator can view the internal situation of the hopper through the observation window, and the design of the inclined slot can guide the material in the hopper to slide down along its slope, avoiding the accumulation of materials at the strip-shaped slot, thereby blocking the observation line of the transparent observation window; it achieves the effect of ensuring that the operator can clearly observe the state of the material in the hopper, facilitates timely detection of abnormal material conditions and takes measures, improves the stability and production efficiency of the shredder operation, and reduces the risk of production delays or equipment failures caused by material accumulation affecting observation.

[0068] Specifically, a rack 42 and a protrusion 43 are vertically provided on the first plate body 41. The size of the protrusion 43 protruding from the end face of the first plate body 41 is not equal to the size of the rack 42 protruding from the end face of the first plate body 41. The setting of the rack 42 cooperates with the driving mechanism to realize the precise movement of the pushing module 4; the protrusion 43 protruding size is not larger than the rack 42, which ensures the normal operation of the rack 42 during the pushing process, realizes the synergistic effect of pushing and preliminary crushing, and improves the crushing effect. The rack 42 cooperates with the driving mechanism to provide the pushing module 4 with power and guidance for precise movement, and realizes precise control of the pushing process; the protrusion 43 is used to cooperate with the block and other structures on the bracket part 13 to limit the pushing stroke and ensure The design of the protrusion 43 being no larger than the rack 42 avoids interference of the protrusion 43 with the normal operation of the rack 42; the two work together, and during the pushing process, the rack 42 drives the first plate 41 to move accurately to complete the pushing action. At the same time, this design also takes into account the structural layout related to crushing, and realizes the synergistic effect of pushing and preliminary crushing; it improves the pushing accuracy, ensures the safe and stable operation of the equipment, and enhances the crushing effect, ensures that the material can enter the working area of ​​the knife roller 3 accurately and stably, reduces the problem of low crushing efficiency or equipment damage caused by inaccurate pushing or equipment failure, and improves the overall working performance and crushing quality of the double-pushing shredder.

[0069] Specifically, a fitting plate is provided on the adjacent ends of the two first plates 41 , and the fitting plate on one first plate 41 is used to stop the other first plate 41 to prevent external materials from flowing toward the pushing module 4 .

[0070] Specifically, the bracket portion 13 may also be provided with a block for resisting the protrusion 43 . The block can limit the maximum stroke of the first plate 41 by resisting the protrusion 43 , thereby preventing it from being too close to the knife roller 3 and causing collision or damage.

[0071] Specifically, a second plate body 44 is provided on the first plate body 41, and the length direction of the second plate body 44 intersects with the length direction of the first plate body 41. A bearing 47 is provided on the second plate body 44, and two strip members 12 are provided on the bracket part 13. A slide groove for accommodating the bearing 47 is formed between the two strip members 12. The cross setting of the second plate body 44 and the first plate body 41, and the cooperation between the bearing 47 and the slide groove provide a stable sliding track for the pushing module 4, ensuring that the pushing module 4 can slide smoothly along the predetermined path, reducing friction and wear during the sliding process, and improving the reliability and service life of the equipment.

[0072] Specifically, a fourth plate 46 is further provided on the first plate 41, and the fourth plate 46 is used to cover the space enclosed by the first plate 41, the second plate 44 and the third plate 45. The bearing 47 is located on the end of the second plate 44 away from the fourth plate 46. The fourth plate 46 plays a protective role, preventing external debris, dust, etc. from entering the enclosed space, avoiding these impurities from interfering with or damaging the components in the space (such as possible transmission components, connecting components, etc.), thereby ensuring the cleanliness and normal operation of the internal structure of the pushing module 4; at the same time, the bearing 47 is set at the end away from the fourth plate 46, and the structure is reasonably arranged, avoiding the fourth plate 46 from hindering the normal operation of the bearing 47 (such as sliding in the slide groove); achieving the effect of improving the operating stability and reliability of the pushing module 4, reducing equipment failures and increased wear of components caused by the entry of impurities, extending the service life of the equipment, and ensuring the overall production efficiency and product quality of the double-push shredder.

[0073] Specifically, the maximum distance between the fourth plates 46 in the two pushing modules 4 is equal to the maximum distance between the bearings 47 in the two pushing modules 4. Through this equal-size design, the two pushing modules 4 have symmetry and coordination in the overall structure. During the pushing process, the two pushing modules 4 can push materials to the knife roller 3 in a relatively balanced manner, ensuring the uniformity of the material entering the working area of ​​the knife roller 3, and the bearings 47 cooperate with the slide groove to operate; the effect of improving the uniformity of material crushing and enhancing the stability of equipment operation is achieved. The uniform entry of materials into the working area of ​​the knife roller 3 helps to improve the crushing quality and reduce the problem of insufficient or excessive crushing caused by uneven material distribution. The stable operation reduces the risk of equipment failure, extends the service life of the equipment, ensures the efficient and stable operation of the double-pushing shredder, and improves the overall production efficiency.

[0074] Specifically, a third plate body 45 is also provided on the first plate body 41, and the second plate body 44 and the third plate body 45 are respectively provided at both ends in the length direction of the first plate body 41, and a first limit block 48 and a second limit block 411 are provided on the third plate body 45, and a limit rod 49 is provided on the first limit block 48, and the limit rod 49 is respectively provided with a first limit block 48 and a second limit block 411 of two pushing modules 4. The third plate body 45 and the first limit block 48 and the second limit block 411 thereon, as well as the setting of the limit rod 49, provide a precise limiting function for the pushing module 4, ensuring that the pushing module 4 will not exceed the predetermined range during the sliding process, thereby ensuring the safe operation of the equipment and the accuracy of the pushing effect.

[0075] Specifically, a first plate member is also provided on the third plate body 45, and the first plate member is used to be set on the side where the two third plate bodies 45 are close to each other, and a strip protrusion is provided on the side of the first plate member close to the third plate body 45, and a bolt hole is opened on the strip protrusion, and the first plate member is set on the third plate body 45 via the strip protrusion and the external bolt. The first plate member can be firmly installed on the third plate body 45 with the help of the structural design of the strip protrusion and the bolt hole, providing an installation basis for the structural connection, protection or auxiliary positioning that may exist between the two pushing modules 4. At the same time, the design of the strip protrusion increases the installation gap and stability, and the bolt connection method is convenient for disassembly and adjustment; it achieves the effect of enhancing the structural stability and maintainability between the two pushing modules 4, and ensures that the pushing module 4 will not affect the pushing effect and equipment safety due to structural loosening or displacement during operation, and when maintenance or replacement of parts is required, the first plate member can be conveniently operated by removing the bolts, thereby improving the reliability and maintenance efficiency of the equipment, and reducing production interruptions and cost increases caused by structural instability or maintenance difficulties.

[0076] Specifically, a bolt hole for accommodating an external bolt is provided on the third plate body 45, which is used for the external bolt to be screwed in from the end away from the first plate body part. The bolt hole is tilted relative to the third plate body 45 and the first plate body part, and the bolt hole is tilted toward the end away from the fourth plate body 46. Through the tilted bolt hole, the external bolt can fix the third plate body 45 at a specific angle when screwing in, which is convenient for screwing in. This tilt angle design can optimize the force direction of the bolt, so that the bolt can more evenly disperse the stress when it is subjected to the force generated during the sliding process of the pushing module 4, thereby reducing the risk of loosening or damage of the bolt due to uneven force.

[0077] Specifically, the first limit block 48 and the second limit block 411 are respectively fixed and slidably arranged relative to the limit rod 49, and a disk body 410 is provided at both ends of the limit rod 49 in the length direction. The diameter of the disk body 410 is larger than the diameter of the limit rod 49. The first limit block 48 is fixed and the second limit block 411 is slidable, so that the pushing module 4 has a certain adjustment space during the sliding process to adapt to the pushing requirements of different materials; the disk body 410 is used to prevent the limit block from falling off the limit rod 49, thereby enhancing the stability of the limit structure and ensuring the precise limitation of the pushing module 4.

[0078] Specifically, two protrusions 412 are provided on one end of the first plate 41 near the bearing 47. The two protrusions 412 are respectively used to be accommodated between the two strip members 12 and between the strip member 12 and the bracket part. The length dimensions of the two protrusions 412 are not equal. The length dimension of the protrusion 412 accommodated between the two strip members 12 is not greater than the diameter dimension of the bearing 47. The provision of the protrusion 412 further enhances the connection stability between the pushing module 4 and the bracket part 13, and prevents the pushing module 4 from offsetting or shaking during the sliding process; the design of protrusions 412 of different lengths enables the pushing module 4 to better adapt to the structure of the bracket part 13 during the sliding process, ensuring the smoothness of sliding; the length limit of the protrusion 412 accommodated between the two strip members 12 ensures the normal cooperation between the bearing 47 and the slide groove, and does not affect the sliding of the pushing module 4.

[0079] Specifically, the two pushing modules 4 are slidingly arranged, and the two sets of bearings 47 are respectively arranged on the width direction of the two pushing modules 4 away from one end portion, and the second driving member 413 is provided with two for separately controlling the corresponding pushing modules 4. The independent sliding setting of the two pushing modules 4 and the corresponding second driving members 413 enable the equipment to flexibly adjust the pushing speed and force according to actual needs, and also realize the differentiated work of the two pushing modules 4, thereby improving the adaptability and crushing efficiency of the equipment; the arrangement of the bearings 47 ensures the smooth sliding of the pushing module 4.

[0080] Specifically, an opening and closing module 5 is provided on the bracket part 13, and the opening and closing module 5 includes a limit plate 51 rotatably set on the bracket part 13 and a third driving member 52 for driving the limit plate 51 to rotate. The rotation axis of the limit plate 51 is located at the end of the limit plate 51 away from the knife roller 3. The limit plate 51 is rotatably set on the bracket part 13 and can rotate around a specific rotation axis under the drive of the third driving member 52. When it is necessary to control the timing or flow of material entering the knife roller 3, the relative position between the limit plate 51 and the knife roller 3 can be adjusted by rotating the limit plate 51, thereby forming a blocking or releasing effect on the material. This design enables the equipment to flexibly adjust the rhythm of material entering the crushing area according to actual production needs; it achieves the effect of accurately controlling material entry, improving crushing effect and equipment safety. During the crushing process, reasonable control of material entry can avoid problems such as knife roller 3 jamming and overloading caused by excessive material, reduce equipment failure, and at the same time ensure that the material can be fully crushed, improve crushing quality and efficiency, and this opening and closing control method of the limit plate 51 is simple and effective, which enhances the adaptability of the equipment to different materials and production conditions.

[0081] Specifically, a block 53 is provided on the limit plate 51, and the limit plate 51 is rotatably set on the bracket part 13 via the block 53. The block 53 serves as an intermediate connecting component, providing a stable rotation connection structure between the limit plate 51 and the bracket part 13. It can withstand the force and torque generated by the limit plate 51 during the rotation process, ensuring that the limit plate 51 can rotate smoothly and stably around the specified axis. At the same time, the existence of the block 53 also facilitates the precise adjustment of the installation position and rotation angle of the limit plate 51, thereby improving the accuracy and flexibility of equipment assembly; it achieves the effect of ensuring the rotation stability and adjustment convenience of the limit plate 51. The stable rotation structure ensures that the limit plate 51 will not shake, jam, or other problems during the opening and closing process, thereby being able to accurately control the timing and flow of materials entering the knife roller 3, thereby improving the reliability of the equipment operation and the material crushing effect. The convenient adjustment method facilitates the debugging and maintenance of the equipment during the production process, and the working state of the limit plate 51 can be quickly adjusted according to the characteristics of different materials, thereby enhancing the adaptability and production efficiency of the equipment.

[0082] Specifically, an extension rod 54 is provided on the block 53, and a protrusion is provided on the extension rod 54. The bracket portion 13 is provided with an arc-shaped first groove 56 for accommodating the protrusion. The design of the extension rod 54 and the protrusion provides a more precise guide and limiting function for the rotation of the limit plate 51. When the limit plate 51 rotates, the protrusion slides in the arc-shaped first groove 56. The shape and size of the arc-shaped first groove 56 limit the movement trajectory of the protrusion, thereby indirectly controlling the rotation angle and range of the limit plate 51, preventing the limit plate 51 from rotating excessively or deviating from the predetermined trajectory. At the same time, this structure also enhances the stability of the limit plate 51. The stability of the connection between 1 and the bracket part 13 reduces the shaking and deviation during the rotation process; it ensures the accurate rotation angle and stable operation of the limit plate 51. The precise rotation angle control enables the limit plate 51 to more accurately adjust the timing and flow of materials entering the knife roller 3, improves the control accuracy of the equipment over the material crushing process, and ensures the crushing quality and efficiency. The stable operation reduces the risk of equipment failure, extends the service life of the equipment, reduces production interruptions and maintenance costs caused by abnormal rotation of the limit plate 51, and improves the overall reliability and production efficiency of the double-push shredder.

[0083] Specifically, a shell 55 is provided on the bracket part 13, and an arc-shaped first groove body 56 for cooperating with the protrusion is opened on the shell 55. The shell 55 provides a stable bearing structure for the arc-shaped first groove body 56, so that the protrusion can slide in a relatively closed and protected environment. The arc-shaped first groove body 56 cooperates with the protrusion to accurately guide and limit the rotation of the limit plate 51. It can clearly define the movement trajectory of the protrusion, and then accurately control the rotation angle and range of the limit plate 51, and prevent the limit plate 51 from excessive rotation, shaking or deviation from the predetermined trajectory during rotation. At the same time, the shell 55 also plays a certain protective role, reducing the interference of external factors on the cooperation between the protrusion and the arc-shaped first groove body 56; it achieves the effect of ensuring that the limit plate 51 rotates accurately, operates stably and reliably, and the precise rotation control ensures that the limit plate 51 can accurately adjust the timing and flow of materials entering the knife roller 3 according to design requirements, thereby improving the controllability and crushing quality of the material crushing process.

[0084] Specifically, in this embodiment, the third driving member 52 is a telescopic driving member, and the two ends of the third driving member 52 are respectively rotatably arranged on the limit plate 51 and the frame 1, and the bottom surface of the frame 1 is provided with a bottom surface for supporting the third driving member 52, and the end of the third driving member 52 for contacting the bottom surface of the frame 1 is provided with a stop member 57, and the stop member 57 is made of elastic buffer material. The telescopic driving member can drive the limit plate 51 to rotate around the specified axis through its own telescopic movement, thereby realizing the opening and closing action of the limit plate 51. The rotation setting at both ends ensures that the driving member can flexibly adapt to the angle change between the limit plate 51 and the frame 1 during the telescopic process, thereby ensuring the smoothness of power transmission. The bottom surface of the frame 1 provides a stable support base for the third driving member 52, and the stop member 57 contacts the bottom surface of the frame 1 when the third driving member 52 telescopically moves to the extreme position, and the elastic buffer material The material can effectively absorb and buffer the impact force between the two, reducing the noise, vibration and damage to the drive member and the frame 1 caused by hard collision; it realizes the effect of accurately controlling the opening and closing of the limit plate 51, ensuring the stable operation of the equipment and extending the service life of the components. The precise telescopic control of the telescopic drive member enables the limit plate 51 to move accurately according to the preset requirements, thereby accurately adjusting the timing and flow of the material entering the knife roller 3, improving the equipment's control accuracy and crushing quality of the material crushing process. The buffering effect of the stop member 57 reduces the noise and vibration during the operation of the equipment, improves the stability and comfort of the equipment operation, and also reduces the wear of the third drive member 52 and the frame 1 caused by frequent collisions, thereby extending the service life of the components, reducing the maintenance cost of the equipment, and enhancing the overall reliability and production efficiency of the double-push type shredder.

[0085] Specifically, the bracket portion 13 is provided with a first cover shell 14 and a second cover shell 18 at one end close to the knife roller 3 and at the other end away from the knife roller 3, respectively. The first cover shell 14 is provided on the bracket portion 13 via external bolts, and the second cover shell 18 is rotatably provided on the bracket portion 13. A locking member 19 is provided at the end of the second cover shell 18 away from the rotation axis. The first cover shell 14 is fixed to the bracket portion 13 by bolts, which can protect the relevant components of the knife roller 3 close to the end of the bracket portion 13, prevent material splashing, dust from entering, etc. from causing damage to the components, and is convenient for disassembly for maintenance and repair; the second cover shell 18 is rotatably provided on the bracket portion 13, and can be flexibly opened and closed according to actual needs, which is convenient for inspection, debugging and maintenance operations inside the equipment. The locking member 19 is used to lock the second cover shell 18. When 18 is closed, it is locked on the bracket part 13 to ensure the stability of the second cover shell 18 during the operation of the equipment, and to avoid it from being accidentally opened due to vibration and other reasons, which may affect the normal operation and safety of the equipment; it achieves the effect of effectively protecting equipment components, facilitating equipment maintenance and repair, and ensuring the safety of equipment operation. The coordinated protection of the first cover shell 14 and the second cover shell 18 reduces the erosion and damage of external factors to the internal components of the equipment, and extends the service life of the equipment. The rotating design of the second cover shell 18 and the setting of the locking member 19 make equipment maintenance more convenient and efficient, and improve the maintainability of the equipment. At the same time, the stable protective structure also reduces the risk of failures and safety accidents during the operation of the equipment, and improves the overall reliability and production efficiency of the double-push type shredder.

[0086] Specifically, a handle 16 is provided on the first cover shell 14, and the handle 16 provides an easy-to-grip position for the operator. When the first cover shell 14 needs to be disassembled, installed or moved, the operator can apply force by grasping the handle 16, making the operation process easier and more labor-saving. At the same time, it is also convenient to control the movement direction and force of the first cover shell 14, avoiding hand slippage, inconvenience in operation, etc. due to direct contact with the surface of the first cover shell 14; the effect of improving the convenience and safety of equipment maintenance operation is achieved. With the help of the handle 16, the operator can complete the relevant operations on the first cover shell 14 more quickly and accurately, shortening the equipment maintenance time and improving work efficiency. Moreover, during the operation, the handle 16 provides the operator with a stable fulcrum, reducing safety hazards such as accidental slipping and collision caused by improper operation, ensuring the personal safety of the operator, and improving the reliability and safety of the double-push type shredder in the maintenance link.

[0087] Specifically, a blanking piece 15 is also provided on the frame 1 / bracket portion 13, and the blanking piece 15 is located at the bottom end of the knife roller 3. The blanking piece 15 is at this specific position at the bottom end of the knife roller 3. After the material is crushed by the knife roller 3, a smooth discharge channel can be provided for the crushed material, guiding the material to fall in a predetermined direction and path, avoiding the accumulation and blockage of the material under the knife roller 3, and at the same time playing a certain restraining and sorting role on the falling material, so that the material can be discharged from the equipment more concentratedly.

[0088] Specifically, the frame 1 is provided with an adjustable support member 17. The adjustable support member 17 can flexibly adjust its parameters such as height, angle or support strength according to factors such as the actual installation environment, equipment operating status and material properties. When the equipment is installed, the support member 17 can be adjusted to keep the frame 1 horizontal and stable to ensure the overall installation accuracy of the equipment; during the operation of the equipment, if the frame 1 is slightly tilted or shaken due to uneven material weight distribution or external factors, the support member 17 can also be adjusted in time to correct the posture of the frame 1 to ensure the normal operation of all components of the equipment.

[0089] Specifically, the hopper 11 is vertically arranged relative to the bracket part 13, that is, the hopper 11 is tilted relative to the frame 1, and the bottom of the frame 1 / hopper 11 is further provided with a first scraper 110 and a second scraper 111. The first scraper 110 is arranged above the fourth plate body 46 and is vertically arranged relative to the fourth plate body 46. The second scraper 111 is arranged above the knife roller 3 and is tilted relative to the knife roller 3 for scraping the material on the knife roller 3. The tilted setting of the hopper 11 is conducive to the material sliding more smoothly to the knife roller 3 under the action of gravity, reducing the residue and blockage of the material in the hopper 11; the first scraper 110 is vertically arranged above the fourth plate body 46, which can effectively scrape off the material that may adhere to the fourth plate body 46, prevent the accumulation of material from affecting the normal operation of the equipment, and ensure that the material can smoothly enter the subsequent processing area; the second scraper 111 is tilted and arranged above the knife roller 3, it can continuously scrape off the material adhering to the surface of the cutter roller 3 during the rotation of the cutter roller 3, avoid the material from being entangled and accumulated on the cutter roller 3, ensure that the cutting edge of the cutter roller 3 is always sharp and in good working condition, and improve the crushing efficiency of the cutter roller 3; it achieves the effect of ensuring smooth material transportation, reducing equipment failures and improving crushing quality. The inclined hopper 11 and the vertically arranged first scraper 110 cooperate to enable the material to enter the processing area of ​​the cutter roller 3 quickly and stably, improve the material transportation efficiency, reduce the equipment downtime caused by material residue and blockage, and reduce the equipment failure rate. The cleaning effect of the second scraper 111 on the cutter roller 3 ensures the cutting performance of the cutter roller 3, so that the material can be crushed more evenly and efficiently, improves the crushing quality, and thus improves the overall production efficiency and reliability of the double-push shredder.

[0090] Specifically, a strip groove is provided on the limiting plate 51 , and the strip groove is used to reduce the weight of the limiting plate 51 .

[0091] Specifically, a pushing method of a double-pushing shredder includes the following steps:

[0092] S1: Ensure that the double-push shredder is installed firmly as a whole, the frame 1 is placed stably, and the components are reliably connected. This will lay the foundation for the subsequent stable operation of the equipment, avoid problems such as shaking and shifting during equipment operation due to unstable installation, reduce the risk of equipment failure, and ensure the safety of operators.

[0093] S2: Check that the first driving member 2 is in normal working condition and can provide sufficient power to the knife roller 3 to achieve the function of crushing external materials.

[0094] S3: Confirm that the two pushing modules 4 are respectively installed on the end of the bracket part 13 away from the knife roller 3, and the sliding settings of the two pushing modules 4 are normal, and the second driving member 413 is well connected to the corresponding pushing modules 4, and can independently control the corresponding pushing modules 4 to move.

[0095] S4: Check that the first plate 41 and its related components (such as the rack 42, protrusion 43, second plate 44, and third plate 45) in the pusher module 4 are correctly installed and functioning properly. Ensure that the bearing 47 on the second plate 44 is in good working condition and can slide smoothly in the slide groove formed between the two strips 12 on the bracket portion 13; ensure that the first limit block 48, second limit block 411, and limit rod 49 on the third plate 45 are firmly installed, and that the discs 410 at both ends of the limit rod 49 in the longitudinal direction can effectively limit the position.

[0096] S5: Confirm that the two protrusions 412 on the first plate 41 are installed in the correct position and can be accommodated between the two strip members 12 and between the strip member 12 and the bracket part respectively, and the length direction dimension of the protrusion 412 accommodated between the two strip members 12 is not greater than the diameter dimension of the bearing 47 to ensure smooth sliding of the pushing module 4.

[0097] S6: Check that the limit plate 51 in the opening and closing module 5 is rotatably mounted on the bracket 13, with the axis of rotation located at the end of the limit plate 51 away from the knife roller 3 and securely rotatably connected via the block 53. Confirm that the extension rod 54 and the protrusion on the block 53 are correctly installed, and that the housing 55 on the bracket 13 is provided with a first arc-shaped groove 56 for engaging the protrusion, ensuring that the limit plate 51 can rotate normally under the drive of the third driving member 52.

[0098] S7: Confirm that the third driving member 52 is installed correctly, and its two ends are rotatably set on the limit plate 51 and the frame 1 respectively, and a buffer is set on the end of the third driving member 52 for contacting the bottom surface of the frame 1 to reduce vibration and impact during operation.

[0099] S8: Start the third driving member 52 to shrink, driving the limiting plate 51 to rotate around the rotation axis.

[0100] S9: After the limit plate 51 rotates to the right position and the channel is fully opened, the action of the third driving member 52 is stopped.

[0101] S10: Add an appropriate amount of material to be crushed into the hopper 11.

[0102] S11: According to the material distribution and work requirements, choose to control one of the pushing modules 4 alone or control two pushing modules 4 at the same time to perform the pushing operation.

[0103] S12: When selecting to individually control a pusher module 4, the corresponding second driver 413 is activated, driving the first plate 41 to slide along the bracket 13 toward the blade roller 3. During this sliding process, the bearing 47 on the second plate 44 rolls within the chute formed between the two strips 12, ensuring smooth and stable sliding of the pusher module 4. Simultaneously, the two protrusions 412 on the first plate 41 slide between the two strips 12 and between the strip 12 and the bracket, respectively, providing auxiliary guidance and limiting functions.

[0104] S13: The rack 42 and the protrusion 43 on the first plate body 41 come into contact with the material during the pushing process, pushing the material toward the knife roller 3. The size of the protrusion 43 protruding from the end face of the first plate body 41 is not equal to the size of the rack 42 protruding from the end face of the first plate body 41, so as to ensure the pushing effect while avoiding excessive squeezing or damage to the material.

[0105] S14: When the pushing module 4 pushes the material to a suitable position, the second driving member 413 stops moving and maintains the position of the first plate 41.

[0106] S15: If it is necessary to control two pushing modules 4 to perform pushing operations at the same time, the two second driving members 413 are started at the same time, and the two pushing modules 4 slide toward the direction close to the knife roller 3 at the same time in the same manner as described above, pushing the material toward the knife roller 3.

[0107] S16: The first driving member 2 drives the cutter roller 3 to rotate and continuously crush the material.

[0108] S17: During the crushing process, the position of the pushing module 4 can be adjusted in time according to the material crushing situation and actual needs. By controlling the action of the second driving member 413, the first plate body 41 continues to slide toward the direction close to the knife roller 3 to further push the material and ensure that the material is fully crushed; or the first plate body 41 slides in the direction away from the knife roller 3 to adjust the pushing force and position.

[0109] S18: When the material is crushed, the first driving member 2 stops moving, and the knife roller 3 stops rotating.

[0110] S19: The second driving member 413 is activated to reverse the movement, driving the first plate 41 to slide along the bracket portion 13 in a direction away from the knife roller 3, so that the pusher module 4 is reset to its initial position. During the reset process, each component moves in the reverse direction of the pusher process, ensuring that the pusher module 4 returns to its initial position smoothly and accurately.

[0111] S20: After the pushing module 4 is completely reset, the action of the second driving member 413 is stopped.

[0112] S21: The third driving member 52 is activated again, extending it, driving the limit plate 51 to rotate in the opposite direction about the rotation axis, closing the passage between the hopper 11 and the cutter roller 3, and preventing the crushed material from splashing or the uncrushed material from accidentally entering the working area of ​​the cutter roller 3. During the rotation of the limit plate 51, the extension rod 54 on the block 53 drives the protrusion to slide in the opposite direction within the arc-shaped first groove 56 on the housing 55, ensuring smooth and accurate rotation of the limit plate 51. The limit plate 51 completely closes the passage, and the action of the third driving member 52 stops.

[0113] S22: Start the third driving member 52 to drive the limiting plate 51 to rotate around the rotation axis, opening the corresponding channel to clean the knife roller 3.

[0114] S23: If the material crushing operation needs to be continued, the above steps can be repeated to achieve continuous pushing and crushing of the double-pushing shredder.

[0115] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A double-push type shredder, comprising a frame (1) and a first driving member (2), wherein a knife roller (3) is rotatably provided on the frame (1), and the first driving member (2) is used for the knife roller (3) to work and crush external materials; characterized in that: A material pushing module (4) is also provided on the frame (1), and the material pushing module (4) includes a first plate (41) for pushing the material and a second driving member (413) for driving the first plate (41) to move closer to or away from the knife roller (3). Two material pushing modules (4) are provided.

2. A double-push shredder according to claim 1, characterized in that: A bracket portion (13) is provided on the frame (1), the bracket portion (13) is tilted relative to the frame (1), the knife roller (3) is located at a lower end of the bracket portion (13), and the pusher module (4) is slidably provided on the bracket portion (13) at an end away from the knife roller (3).

3. The double-push shredder according to claim 1, characterized in that: A rack (42) and a protrusion (43) are vertically arranged on the first plate body (41); the size of the protrusion (43) protruding from the end surface of the first plate body (41) is not equal to the size of the rack (42) protruding from the end surface of the first plate body (41).

4. The double-push shredder according to claim 2, characterized in that: A second plate body (44) is provided on the first plate body (41), the length direction of the second plate body (44) intersects with the length direction of the first plate body (41), a bearing (47) is provided on the second plate body (44), and two strip members (12) are provided on the bracket portion (13), and a sliding groove for accommodating the bearing (47) is formed between the two strip members (12).

5. The double-push shredder according to claim 4, characterized in that: A third plate body (45) is also provided on the first plate body (41), the second plate body (44) and the third plate body (45) are respectively provided at two ends in the length direction of the first plate body (41), the third plate body (45) is provided with a first limit block (48) and a second limit block (411), the first limit block (48) is provided with a limit rod (49), and the limit rod (49) is respectively provided with the first limit block (48) and the second limit block (411) of the two pusher modules (4).

6. The double-push shredder according to claim 5, characterized in that: The first limiting block (48) and the second limiting block (411) are respectively fixedly and slidably arranged relative to the limiting rod (49); a disk body (410) is provided at both ends of the limiting rod (49) in the length direction; and the diameter of the disk body (410) is larger than the diameter of the limiting rod (49).

7. The double-push shredder according to claim 4, characterized in that: Two protrusions (412) are provided on one end of the first plate (41) close to the bearing (47). The two protrusions (412) are respectively used to be accommodated between the two strip members (12) and between the strip member (12) and the bracket portion. The length dimensions of the two protrusions (412) are unequal. The length dimension of the protrusion (412) accommodated between the two strip members (12) is not greater than the diameter dimension of the bearing (47).

8. The double-push shredder according to claim 4, characterized in that: The two pusher modules (4) are slidably arranged, and the two sets of bearings (47) are respectively arranged at ends of the two pusher modules (4) in a width direction away from one end. The second driving member (413) is provided with two for separately controlling the corresponding pusher modules (4).

9. The double-push shredder according to claim 1, characterized in that: An opening and closing module (5) is provided on the bracket portion (13), and the opening and closing module (5) comprises a limit plate (51) rotatably provided on the bracket portion (13) and a third driving member (52) for driving the limit plate (51) to rotate, wherein the rotation axis of the limit plate (51) is located at an end of the limit plate (51) away from the knife roller (3).

10. A pushing method for a double-pushing shredder according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Check the components of the double-push shredder; S2: Start the knife roller (3), add an appropriate amount of material to be crushed into the hopper (11) and select to control a single pusher module (4) or simultaneously control two pusher modules (4) to perform the push operation according to the material distribution and work requirements; S3: After the shredding is completed, all components are reset; S4: Start the third driving member (52), drive the limiting plate (51) to rotate around the rotation axis, and open the corresponding channel to clean the knife roller (3).

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