Differential meshing cutter structure of double-shaft shredding machine and cutter tooth layout method of differential meshing cutter structure

Abstract

The invention relates to the technical field of cutter structures, and particularly discloses a differential meshing cutter structure of a double-shaft shredder and a cutter tooth layout method.The differential meshing cutter structure of the double-shaft shredder comprises a main shaft and an auxiliary shaft, the side face of the main shaft is sleeved with and fixedly connected with a main cutter base, and the side face of the main cutter base is fixedly connected with a smashing cutter; a main gear ring is fixedly connected to the bottom of the main tool apron, an auxiliary tool apron is arranged on the side face, located on the side face of the main tool apron, of the auxiliary shaft in a sleeving mode and fixedly connected with the side face of the auxiliary shaft, an auxiliary gear ring is fixedly connected to the bottom of the auxiliary tool apron, the main tool apron comprises a fixed tool apron, and a boss is fixedly connected to the side face of the fixed tool apron. And a screw hole is formed in the position, located on the side face of the boss, of the side face of the fixed tool apron, a hexagonal rotating hole is formed in the top of the fixed tool apron, and the fixed tool apron is arranged on the side face of the main shaft in a sleeving mode through the hexagonal rotating hole and fixedly connected with the side face of the main shaft. The purpose of tearing up objects at differential speed and preventing materials from being stuck is achieved.

Description

Technical Field

[0001] This invention relates to the field of cutting tool structure technology, specifically to a cutting tool structure and tooth layout method for a dual-shaft shredder with differential meshing. Background Technology

[0002] The development of the differential meshing blade structure in dual-shaft shredders was primarily aimed at solving several core problems encountered by traditional shredders in material processing. To ensure effectiveness, high-precision close-packed cutters require a strictly controlled blade clearance of approximately 0.3mm. This places extremely high demands on the manufacturing and installation precision of the cutters, as well as the materials used (such as high-hardness alloy steel), resulting in high costs. When rotating at the same speed, the two-axis cutters act like a "clamp," relying mainly on compression and pulling for crushing, lacking effective shearing action. This limits the crushing effect on large-sized or tough materials. While fixed differential speeds generate shearing through speed differences, the high-speed axis cutters continuously wrap material around their tips like "rollers," requiring machine shutdown for cleaning. Due to the limitations of the above control methods, manufacturers are forced to design very small blade clearances on the two main shafts to ensure basic output particle size. This leads to a series of derivative problems, requiring stringent requirements on the machining precision of the cutters, the coaxiality of the main shafts, and the installation precision. The cutters must be made of special alloy tool steel and undergo heat treatment to ensure sufficient hardness and wear resistance. Early shredders were not optimized in terms of power configuration, overload protection, and structural design, often facing problems such as insufficient torque, easy jamming when encountering hard objects, and high operating noise, affecting production continuity and the working environment.

[0003] According to the patent CN107930812A, the present invention is a dual-shaft shredder blade. It is reasonably designed and easy to use. It adopts a double-sided pin positioning and high-strength bolt fastening integrated structure, which is easy and firm to install. The blade wear is small and the service life is long. The blade replacement and installation are convenient, which reduces the labor intensity of the human body, greatly reduces the downtime of equipment to replace blades, and improves production efficiency.

[0004] However, when the above-mentioned equipment is used for crushing, the gear meshing motion caused by the same rotation speed can cause the material to fall along the gap and not be fully crushed. Summary of the Invention

[0005] To solve the above technical problems, the present invention is achieved through the following technical solution: a blade structure and blade tooth layout method for differential meshing of a dual-shaft shredder, comprising a main shaft and a secondary shaft, a main blade holder sleeved and fixedly connected to the side of the main shaft, a shredding blade fixedly connected to the side of the main blade holder, a main tooth ring fixedly connected to the bottom of the main blade holder, a secondary blade holder sleeved and fixedly connected to the side of the secondary shaft located on the side of the main blade holder, and a secondary tooth ring fixedly connected to the bottom of the secondary blade holder;

[0006] The main blade holder includes a fixed blade holder with a boss fixedly connected to its side. A screw hole is provided on the side of the boss, and a hexagonal rotating hole is provided on the top of the fixed blade holder. The fixed blade holder is fitted onto the side of the main shaft through the hexagonal rotating hole and is fixedly connected to the side of the main shaft. The bottom of the fixed blade holder is fixedly connected to the top of the main gear ring. When the main shaft and sub-shaft are started, they rotate under the influence of an external drive device, rotating in opposite directions. The rotation of the main shaft drives the fixed blade holder to rotate. The hexagonal rotating hole facilitates the rotation of the fixed blade holder and allows torque to be transmitted through the rigidity of the main shaft material, thus improving torque transmission. The boss facilitates the transmission of torque when the crushing blade contacts the material to the main body of the fixed blade holder, allowing the crushing blade to bear greater torque and facilitating material crushing. The screw hole facilitates quick installation and removal of the crushing blade, enabling timely replacement.

[0007] Preferably, the pulverizing blade includes a blade holder and a cover blade. A claw blade is fixedly connected to the side of the blade holder. A first bolt is fixedly connected to the side of the blade holder located on the side of the claw blade. A second bolt is fixedly connected to the side of the cover blade. Both the blade holder and the cover blade have fixing grooves on their sides. The end of the first bolt away from the blade holder extends into the inner wall of the screw hole and is threadedly connected to the inner wall of the screw hole. The boss extends into the interior of the fixing groove and is slidably connected to the inner wall of the fixing groove. The side of the cover blade contacts the side of the blade holder. The rotation of the fixed blade holder drives the blade holder and the cover blade to move synchronously. The movable boss extends into the blade holder through the fixed groove, allowing the reaction force generated during crushing to be transmitted to the inside of the boss and act on the main body of the fixed blade holder. The claw blades are designed to meet the angle of material crushing, thereby amplifying the pressure when crushing objects through the tips of the claw blades, thus increasing the crushing effect. At the same time, the first bolt on one side of the claw blades allows the claw blades to bear a larger torque when tearing objects, thus facilitating the crushing of materials. The cover blade is designed to distribute the torque when the claw blades tear objects, thereby enhancing the crushing effect of the equipment.

[0008] Preferably, the main gear ring includes a gear ring with a polygonal rotating hole at its top. The gear ring is fitted onto the side of the spindle through the polygonal rotating hole and is fixedly connected to the side of the spindle. The side of the gear ring contacts the side of the tool holder, and the bottom of the gear ring is fixedly connected to the top of the fixed tool holder. The gear ring is positioned such that, by rotating in different directions along the spindle and counterspindle, the spindle drives the gear ring to rotate when the fixed tool holder rotates. The polygonal rotating hole facilitates the transmission of spindle torque to the gear ring through material rigidity. The side of the gear ring is provided with... The circular trajectory formed during rotation is tangent to the circular trajectory produced by the rotating claw blade. During rotation, the contact and compression between the claw blade and the toothed ring increases the crushing effect on the object. Furthermore, the outer diameter of the toothed ring and the radius of the circle produced by the rotating claw blade are different, resulting in a difference between the lateral linear velocity of the toothed ring and the lateral circular linear velocity of the claw blade. This difference in linear velocity between the rotating toothed ring and the claw blade creates a differential crushing effect when the material is stuck between the toothed ring and the claw blade. Compared to the traditional method of using a circular bushing, this method significantly improves the crushing effect on the object.

[0009] This invention provides a blade structure and tooth layout method for differential meshing in a dual-shaft shredder. It offers the following advantages:

[0010] 1. The differential meshing blade structure and tooth layout of this dual-shaft shredder feature a starting main shaft and a secondary shaft, employing a design where the main and secondary shafts rotate in opposite directions, effectively enhancing the biting and tearing action on the material. The fixed blade holder is connected to the main shaft via a hexagonal rotating hole, ensuring more stable and reliable power transmission, thereby improving overall transmission efficiency. The boss structure effectively disperses the impact force borne by the shredder blades to the blade holder body, significantly improving the blades' load-bearing capacity and durability. The screw holes facilitate easier installation and disassembly of the shredder blades, aiding maintenance and replacement, and ensuring continuous and efficient operation of the equipment.

[0011] 2. The differential-speed meshing blade structure and tooth layout of this dual-shaft shredder feature a fixed blade holder that rotates to drive the synchronous movement of both the blade holder and the cover blade. This synchronous movement of the fixed blade holder and cover blade creates a synergistic working effect. The design of the boss embedded inside the blade holder transfers the reaction force generated during the crushing process to the fixed blade holder body, thereby improving structural stability and reducing localized wear. The claw blades are designed with angles that conform to the material crushing characteristics, concentrating force at their tips to significantly enhance the pressure during crushing and improve shredding efficiency. The first bolt further strengthens the claw blades' torque-bearing capacity under stress, and together with the auxiliary support of the cover blade, they disperse the force, significantly enhancing the overall crushing efficiency and operational reliability of the equipment.

[0012] 3. The differential meshing cutter structure and tooth layout of this dual-shaft shredder, through the linkage design of the toothed ring and the main shaft, forms an effective differential meshing effect when the main and auxiliary shafts rotate in opposite directions. The toothed ring and the claw cutter form a tangential trajectory during rotation, enhancing the compression and tearing effect on the material. Due to the difference between the outer diameter of the toothed ring and the rotation radius of the claw cutter, a difference in linear velocity is generated when they contact the material, thereby realizing the differential crushing function. This design not only improves the fineness and uniformity of material crushing, but also, compared with the traditional circular bushing structure, more effectively avoids material adhesion and blockage, significantly improving crushing efficiency and processing capacity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the blade structure of the differential engagement of the dual-shaft shredder of the present invention;

[0014] Figure 2 This is a schematic diagram of the main tool holder structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the shredder structure of the present invention;

[0016] Figure 4 This is a schematic diagram of the main toothed ring structure of the present invention;

[0017] Figure 5 This is a schematic diagram of the blade structure and tooth layout of the differential meshing blade in the dual-shaft shredder of the present invention.

[0018] In the diagram: 1. Main shaft; 2. Sub-shaft; 3. Main cutter holder; 4. Crusher; 5. Main gear ring; 6. Sub-cutter holder; 7. Sub-gear ring; 301. Fixed cutter holder; 302. Boss; 303. Screw hole; 304. Hexagonal rotating hole; 401. Cutter holder; 402. Claw cutter; 403. First bolt; 404. Cover cutter; 405. Second bolt; 406. Fixing groove; 501. Gear ring; 502. Polygonal rotating hole. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] For the first embodiment, please refer to... Figures 1-2The present invention provides a technical solution: a blade structure and blade tooth layout method for differential meshing of a dual-shaft shredder, including a main shaft 1 and a secondary shaft 2. A main blade holder 3 is sleeved and fixedly connected to the side of the main shaft 1. A shredding blade 4 is fixedly connected to the side of the main blade holder 3. A main tooth ring 5 is fixedly connected to the bottom of the main blade holder 3. A secondary blade holder 6 is sleeved and fixedly connected to the side of the secondary shaft 2 located on the side of the main blade holder 3. A secondary tooth ring 7 is fixedly connected to the bottom of the secondary blade holder 6.

[0021] The main tool holder 3 includes a fixed tool holder 301. A boss 302 is fixedly connected to the side of the fixed tool holder 301. A screw hole 303 is opened on the side of the boss 302. A hexagonal rotating hole 304 is opened on the top of the fixed tool holder 301. The fixed tool holder 301 is sleeved on the side of the spindle 1 through the hexagonal rotating hole 304 and fixedly connected to the side of the spindle 1. The bottom of the fixed tool holder 301 is fixedly connected to the top of the main gear ring 5.

[0022] Start the main shaft 1 and the auxiliary shaft 2. The main shaft 1 and the auxiliary shaft 2 rotate under the external drive device and rotate in opposite directions. The rotation of the main shaft 1 drives the fixed blade holder 301 to rotate. The hexagonal rotating hole 304 facilitates the rotation of the fixed blade holder 301. The hexagonal rotating hole 304 facilitates the transmission of torque through the material rigidity of the main shaft 1, which is beneficial for torque transmission. The boss 302 facilitates the transmission of torque of the crushing blade 4 when it comes into contact with the material to the main body of the fixed blade holder 301, so that the crushing blade 4 can bear a larger torque, which is convenient for crushing materials. The screw hole 303 facilitates the quick installation and disassembly of the crushing blade 4, which is convenient for timely replacement.

[0023] For the second embodiment, please refer to... Figures 1-3 Based on the first embodiment, the present invention provides a technical solution: the crushing blade 4 includes a blade holder 401 and a cover blade 404. A claw blade 402 is fixedly connected to the side of the blade holder 401. A first bolt 403 is fixedly connected to the side of the blade holder 401 located on one side of the claw blade 402. A second bolt 405 is fixedly connected to the side of the cover blade 404. Fixing grooves 406 are provided on the sides of both the blade holder 401 and the cover blade 404. The end of the first bolt 403 away from the blade holder 401 extends into the inner wall of the screw hole 303 and is threadedly connected to the inner wall of the screw hole 303. The boss 302 extends into the interior of the fixing groove 406 and is slidably connected to the inner wall of the fixing groove 406. The side of the cover blade 404 contacts the side of the blade holder 401.

[0024] The rotation of the fixed blade holder 301 drives the blade holder 401 and the cover blade 404 to move synchronously. The boss 302 extends into the blade holder 401 through the fixing groove 406, so that the reaction force of the blade holder 401 during crushing is transmitted to the inside of the boss 302 and acts on the main body of the fixed blade holder 301. The claw blade 402 is designed to meet the angle of material crushing, thereby amplifying the pressure when crushing the object through the tip of the claw blade 402, thus increasing the crushing effect. At the same time, the first bolt 403 on one side of the claw blade 402 makes it easier for the claw blade 402 to bear a larger torque when tearing the object, thus facilitating the crushing of the material. The cover blade 404 distributes the torque of the claw blade 402 when tearing the object, thereby enhancing the crushing effect of the equipment.

[0025] Third embodiment, please refer to Figures 1-4 Based on the second embodiment, the present invention provides a technical solution: the main gear ring 5 includes a gear ring 501, the top of the gear ring 501 is provided with a polygonal rotating hole 502, the gear ring 501 is sleeved on the side of the main shaft 1 through the polygonal rotating hole 502 and is fixedly connected to the side of the main shaft 1, the side of the gear ring 501 contacts the side of the tool holder 401, and the bottom of the gear ring 501 is fixedly connected to the top of the fixed tool holder 301. The gear ring 501 is provided.

[0026] The gear ring 501 is fitted onto the side of the main shaft 1 through a polygonal rotating hole 502. With the main shaft 1 and the secondary shaft 2 rotating in different directions, and the fixed tool holder 301 rotating, the main shaft 1 drives the gear ring 501 to rotate. The polygonal rotating hole 502 facilitates the transmission of torque from the main shaft 1 to the gear ring 501 through material rigidity. The side of the gear ring 501 is designed such that the circular trajectory formed during rotation is tangent to the circular trajectory generated by the rotation of the claw cutter 402. During rotation, the contact between the claw cutter 402 and the gear ring 501... The pressure increases the crushing effect on the object. Furthermore, the outer diameter of the toothed ring 501 and the radius of the circle generated by the rotation of the claw blade 402 are different, resulting in a difference between the lateral linear velocity of the toothed ring 501 and the lateral circular linear velocity of the claw blade 402. This difference in linear velocity between the rotation of the toothed ring 501 and the claw blade 402 allows for differential crushing when the material is stuck between the toothed ring 501 and the claw blade 402, achieving a crushing effect through the difference in linear velocity. This method increases the crushing effect on the object compared to the traditional method using a circular bushing.

[0027] For the fourth embodiment, please refer to [link / reference]. Figures 1-5 Based on the third embodiment, the present invention provides a technical solution: a method for the tooth layout of a blade structure for differential meshing in a dual-shaft shredder, comprising the following steps:

[0028] S1. The main shaft 1 and the auxiliary shaft 2 are driven to rotate in opposite directions from the outside. The main shaft 1 drives the fixed blade holder 301 to rotate. The hexagonal rotating hole 304 on it is used to transmit torque. The boss 302 transmits the torque on the crushing blade 4 to the fixed blade holder 301. The screw hole 303 is used to install and remove the crushing blade 4.

[0029] S2. When the fixed blade holder 301 rotates, it drives the blade holder 401 and the cover blade 404 to move synchronously. The boss 302 extends into the inside of the blade holder 401 through the fixing groove 406 to transmit the reaction force during crushing. The claw blade 402 is fixed by the first bolt 403, and the cover blade 404 shares the torque it receives.

[0030] S3. The toothed ring 501 is fitted onto the main shaft 1 through the polygonal rotating hole 502 and rotates accordingly. The rotation trajectory of the toothed ring 501 is tangent to the rotation trajectory of the claw cutter 402. The outer diameter and rotation radius of the two are different, resulting in a difference in the lateral linear velocity, which achieves differential crushing when the material is stuck.

[0031] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A blade structure for differential engagement in a dual-shaft shredder, characterized in that: Includes a main shaft (1) and a secondary shaft (2). A main blade holder (3) is sleeved and fixedly connected to the side of the main shaft (1). A crushing blade (4) is fixedly connected to the side of the main blade holder (3). A main gear ring (5) is fixedly connected to the bottom of the main blade holder (3). A secondary blade holder (6) is sleeved and fixedly connected to the side of the secondary shaft (2) located on the side of the main blade holder (3). A secondary gear ring (7) is fixedly connected to the bottom of the secondary blade holder (6). The main tool holder (3) includes a fixed tool holder (301). A boss (302) is fixedly connected to the side of the fixed tool holder (301). A screw hole (303) is opened on the side of the boss (302) of the fixed tool holder (301). A hexagonal rotating hole (304) is opened on the top of the fixed tool holder (301). The fixed tool holder (301) is sleeved on the side of the main shaft (1) through the hexagonal rotating hole (304) and fixedly connected to the side of the main shaft (1). The bottom of the fixed tool holder (301) is fixedly connected to the top of the main gear ring (5).

2. The blade structure for differential meshing in a dual-shaft shredder according to claim 1, characterized in that: The shredder (4) includes a blade holder (401) and a cover blade (404). A claw blade (402) is fixedly connected to the side of the blade holder (401). A first bolt (403) is fixedly connected to the part of the side of the blade holder (401) located on the side of the claw blade (402). A second bolt (405) is fixedly connected to the side of the cover blade (404). A fixing groove (406) is provided on the side of both the blade holder (401) and the cover blade (404).

3. The blade structure for differential meshing in a dual-shaft shredder according to claim 2, characterized in that: The first bolt (403) extends into the inner wall of the screw hole (303) at the end away from the tool holder (401) and is threadedly connected to the inner wall of the screw hole (303). The boss (302) extends into the interior of the fixing groove (406) and is slidably connected to the inner wall of the fixing groove (406). The side of the cover knife (404) contacts the side of the tool holder (401).

4. The blade structure for differential meshing in a dual-shaft shredder according to claim 2, characterized in that: The main toothed ring (5) includes a toothed ring (501), and a polygonal rotating hole (502) is provided on the top of the toothed ring (501).

5. The blade structure for differential meshing in a dual-shaft shredder according to claim 4, characterized in that: The toothed ring (501) is sleeved on the side of the spindle (1) through a polygonal rotating hole (502) and fixedly connected to the side of the spindle (1). The side of the toothed ring (501) contacts the side of the tool holder (401). The bottom of the toothed ring (501) is fixedly connected to the top of the fixed tool holder (301). The toothed ring (501) is set.

6. A method for the tooth layout of a blade structure in a dual-shaft shredder with differential meshing, characterized in that, Includes the following steps: S1. The main shaft and the auxiliary shaft are driven to rotate in opposite directions from the outside. The main shaft drives the fixed blade holder to rotate. The hexagonal rotating hole on it is used to transmit torque. The boss transmits the torque on the crushing blade to the fixed blade holder. The screw hole is used to install and remove the crushing blade. S2. When the fixed blade holder rotates, it drives the blade holder and the cover blade to move synchronously. The boss extends into the inside of the blade holder through the fixing groove to transmit the reaction force during crushing. The claw blade is fixed by the first bolt, and the cover blade shares the torque it receives. S3. The toothed ring is fitted onto the main shaft through a polygonal rotating hole and rotates accordingly. The rotation trajectory of the toothed ring is tangent to the rotation trajectory of the claw cutter. The outer diameter and rotation radius of the two are different, resulting in a difference in the lateral linear velocity, which achieves differential crushing when the material is stuck.

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