Waste tire crusher

Abstract

The invention relates to the field of waste tire recovery, in particular to a waste tire crusher which comprises a crusher shell, two crushing rollers are installed in the crusher shell, feeding ports are formed in the crushing rollers, a funnel cavity is formed above the feeding ports, the width of the funnel cavity is larger than the overall thickness of a conventional tire, and the crushing rollers are arranged in the funnel cavity. The crusher shell is provided with two symmetrically-arranged containing grooves, the containing grooves are located in the two sides of the feeding port, and baffles are slidably connected into the containing grooves. According to the device, the movable end of the electric telescopic rod moves towards one side, two baffles are pushed to be close to each other to close a feeding port, a long plate pushes a cutting blade to cut off the part, with a steel wire ring, of the side edge of a waste rubber tire, and meanwhile cut-off rubber with steel wires is recycled; rubber with steel wires is prevented from falling into the crushing device, so that crushed tire particles are more uniform, the steel wires are prevented from entering the crusher, and the service life of the crusher is prolonged.

Description

Technical Field

[0001] This invention relates to the field of waste tire recycling, specifically to a waste tire shredder. Background Technology

[0002] Recycling and disposing of waste tires is a key measure to address the increasingly serious problem of "black pollution." This measure can not only significantly reduce the harm caused by waste tires to the natural environment, but also help promote resource recycling and reduce dependence on primary resources. Currently, the most mature and widely used technology in the industry is mechanical crushing, which uses specialized crushing equipment to break down the rubber portion of waste tires into rubber particles of different sizes or fine rubber powder. However, the structural characteristics of tires themselves pose considerable challenges to the crushing process. The rubber layer of tires has extremely high wear resistance and elasticity, and the tire carcass also contains a large number of reinforcing materials such as steel wires. These factors place extremely high demands on the wear resistance and mechanical strength of the crushing equipment. Under long-term high-load operation, key components of the crusher—such as hammers, liners, and screens—are prone to severe wear, plastic deformation, and even cracking or breakage due to continuous impact, compression, and friction. This situation not only affects the operational stability of the equipment, but also leads to frequent replacement of core components, thereby increasing operating costs.

[0003] Especially for tires with a high steel wire content, the steel wires released during the crushing process can easily become entangled in the high-speed rotating shaft and rotor components, causing equipment jamming, stalling, or even unexpected shutdowns. Such malfunctions not only disrupt the normal production rhythm and affect overall processing efficiency, but also significantly increase the complexity of equipment maintenance, repair frequency, and parts replacement costs, resulting in a significant adverse impact on production economy and sustainability.

[0004] Therefore, a waste tire shredder is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a waste tire shredder to solve the problem that tires with high steel wire content will cause severe wear to the equipment during the shredding process, which will significantly increase the maintenance complexity, repair frequency and replacement cost of the equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A waste tire shredder includes a shredder housing with two shredding rollers installed inside. Each shredding roller has a feed inlet, and above the feed inlet is a funnel cavity. The width of the funnel cavity is greater than the overall thickness of a conventional tire. Two symmetrically arranged placement slots are opened on the shredder housing, located on either side of the feed inlet. Each placement slot has a baffle slidably connected to it. An electric telescopic rod is fixedly installed on the shredder housing, with a long plate fixedly installed at its movable end. A sliding rod is fixedly installed at one end of the baffle, sliding on the long plate. A first compression spring is sleeved on the sliding rod, with its two ends abutting against the baffle and the long plate, respectively. A drive motor is installed on the long plate, with a cutting blade on one side of the drive motor. A cutting assembly is installed between the cutting blade and the output shaft of the drive motor.

[0007] In the traditional waste tire processing process, due to the large volume of the tire material and the steel wire ring structure on both sides of the tire, direct crushing often results in low efficiency and severe equipment wear. However, the waste tire shredder design of this invention effectively solves these problems through a unique structural setting. It first cuts off the steel wire rings on both sides of the waste tire before crushing the waste tire. The hopper cavity is wider than the overall thickness of a conventional tire, ensuring that the tire can smoothly enter the crusher and preventing jamming. The sliding baffles within the trough prevent waste rubber tires from falling off during the cutting process of the steel wire rings, ensuring that the tires can enter the crushing rollers below after cutting. The baffles also prevent dust particles generated during crushing from overflowing and posing a hazard to operators. In operation, the movable end of the electric telescopic rod moves to one side, driving a long plate on one side. The moving long plate pushes the first compression spring against it, causing the two baffles to close together and shut off the feed inlet. The cutting assembly then pushes the cutting blades to cut off the waste rubber tires, resulting in more uniform crushed tire particles, facilitating subsequent recycling and preventing steel wire from entering the crusher, thus extending its service life.

[0008] Preferably, the cutting assembly includes a slide rail mounted on a long plate, a sliding block slidably connected to the slide rail, a screw threaded onto the sliding block to abut against the long plate, a drive motor fixedly mounted on the sliding block, a first connecting block fixedly mounted on the output shaft of the drive motor, a first telescopic rod fixedly mounted at both ends of the first connecting block, a bolt threaded onto the fixed end of the first telescopic rod, a second connecting block fixedly mounted at the movable end of the first telescopic rod, and the cutting blade fixedly mounted on the second connecting block.

[0009] In practical applications, the cooperation between the slide rail and the sliding block allows for flexible adjustment of the drive motor and cutting blade positions, adapting to the cutting needs of waste tires of different sizes and shapes. The screws fix the position of the sliding block, ensuring stability during the cutting process. The design of the first telescopic rod further enhances the adjustment range of the cutting blade. The length of the first telescopic rod can be changed by rotating the bolt, thereby precisely controlling the position and cutting depth of the cutting blade, improving cutting accuracy and efficiency. It should be noted that only one side of the sliding block is equipped with the drive motor; the first connecting block on the other side is directly rotatably mounted to the sliding block. Specifically, when adjustment is needed, the screw is rotated to adjust the specific position of the sliding block on the slide rail, aligning the output shaft center axis of the drive motor with the center axis of the tire to be shredded and recycled. The screw is then rotated to fix the specific position of the sliding block. Simultaneously, the position and diameter of the tire's rim are checked, and the position of the first telescopic rod is adjusted by rotating the bolt, allowing the cutting blade at one end of the first telescopic rod to cut off the tire ring containing the rim. This flexibility and adjustability of the cutting components enable the waste tire shredder to better handle various complex waste tire processing scenarios, improving the equipment's practicality and adaptability.

[0010] Preferably, a cylinder is fixedly installed on each of the first connecting blocks on both sides. A prism groove is formed on the cylinder. A prism rod is slidably connected in the prism groove. A second compression spring that abuts against the prism rod is placed in the prism groove. A groove is formed on one side of the prism rod. A protrusion is fixedly installed on the other side of the prism rod. The protrusion is generally arranged in a pyramid shape. When the movable end of the electric telescopic rod moves to the set position, the protrusion enters the groove and engages with the groove.

[0011] In practical use, the movable end of the electric telescopic rod pushes the long plate and drive motor to move. This design allows the protrusions to precisely enter the grooves and mesh with each other when the movable end of the electric telescopic rod moves to a specific set position during the crusher's operation, thereby achieving precise positioning and stable connection of the relevant components. This precise meshing connection method can effectively transfer the rotational force on one side to the other side, causing the other side to rotate simultaneously. However, because the output shaft of the motor is fixedly mounted with the telescopic rod, cutting blades, and other parts, the output shaft of the drive motor is subject to a certain degree of gravity, which reduces the service life of the drive motor. By supporting the first telescopic rod and other parts with two interconnected prism rods, excessive force on one side of the drive motor's output shaft is avoided, improving the overall stability and reliability of the crusher's structure. This ensures that all components can work together stably during the crushing of waste tires, thereby improving the overall efficiency and crushing quality of the waste tire shredder, preventing steel wire from entering the crusher, and extending the crusher's service life.

[0012] Preferably, four notches are provided on both sides of the prism rod, and the notches are arranged in a ring around the prism rod. A swing rod is rotatably connected in the notch, and a torsion spring connected to the swing rod is installed in the notch. An inclined surface is provided at the end of the swing rod away from the notch. When the swing rod and the prism rod form a 30° angle, the inclined surface is set perpendicular to the ground.

[0013] During the operation of the waste tire shredder, when the two prism rods are pressed tightly together, the cut steel wire rubber rings may fall downwards and onto the prism rods that are connected in the middle. This causes the two prism rods to separate after the electric telescopic rod moves, and the fallen steel wire rubber rings will be carried away with the rubber tires, resulting in the steel wire rubber rings being crushed together. Therefore, multiple deployable swing rods are used to limit the steel wire rubber rings and remove them from the rubber tires during subsequent movement of the prism rods, preventing the steel wire rubber rings from being crushed and cut along with the rubber tires, thereby indirectly improving the shredder's crushing effect and efficiency on waste tires.

[0014] Preferably, guide rails are fixedly installed on both sides of the baffles, and two symmetrically arranged arc-shaped placement blocks are slidably connected on the guide rails. The arc-shaped placement blocks are located on the side of the two baffles that are close to each other.

[0015] In the working environment of a waste tire shredder, the guide rails fixedly installed on the side baffles play a crucial guiding role. Two symmetrically arranged arc-shaped placement blocks are slidably connected to the guide rails. This design allows the arc-shaped placement blocks to be flexibly adjusted in position according to the size and shape of the waste tires. When the waste tire is placed inside the shredder, the specific position of the arc-shaped placement blocks can be adjusted to securely clamp the waste tire in the middle, ensuring that the waste tire does not shake or shift during the shredding process. Moreover, the arc-shaped placement blocks are located on the side where the two baffles are close to each other. This layout can make full use of the internal space of the shredder, so that the waste tire is subjected to a uniform force during shredding, further improving the shredding effect and stability.

[0016] Preferably, the baffle is provided with a discharge port, and the crusher shell is provided with two symmetrically arranged discharge windows. A guide plate is provided on one side of the discharge window, and one side of the guide plate is located below the discharge port. The guide plate is fixedly installed inside the crusher shell. A storage box is connected to the other side of the discharge window, and the two storage boxes are fixedly installed on both sides of the crusher shell.

[0017] It should be noted that the edges of the discharge window are rounded to prevent material from getting stuck during discharge, ensuring smooth discharge. The storage boxes are located on both sides of the crusher shell. The rubber rings cut by the cutting blades can enter the storage boxes through the discharge window, facilitating the continuous crushing of waste rubber tires. At the same time, the cut rubber rings with steel wires can be collected and reused. The storage boxes are made of high-strength materials and can withstand the accumulation of heavy materials. Specifically, the cut rubber steel wire rings are held open by the cutting blades on both sides and will not fall off. When the cutting blades move backward, the crusher shell blocks the movement of the rubber steel wire rings, allowing them to enter the discharge port and be pushed into the storage box by the guide plate below. The guide plate can significantly improve the crushing efficiency of waste rubber tires.

[0018] Preferably, the funnel cavity is provided with a plurality of evenly arranged limiting plates, the limiting plates are provided with a plurality of evenly arranged raised stripes, a second telescopic rod is fixedly installed on the long plate, a third compression spring is installed inside the second telescopic rod, and the movable end of the second telescopic rod is fixedly installed with the limiting plates.

[0019] By setting multiple evenly distributed limiting plates and raised stripes on them, the friction of waste tires in the funnel cavity can be effectively increased, preventing the waste tires from slipping or shifting when the cutting blades cut them. This ensures stable operation when removing the steel wire rings from waste tires. During use, the electric telescopic rod pushes the second telescopic rod and the limiting plates through the long plate to move and hold the rubber tires to be cut and recycled. The design of the second telescopic rod in conjunction with the third compression spring allows the limiting plates to adaptively adjust according to the actual size of the waste tires, further improving the applicability and crushing effect of the crusher.

[0020] Preferably, the second connecting block is provided with a heating plate, which is mounted on the second connecting block via a hinge seat. When the drive motor drives the second connecting block to rotate clockwise, the heating plate is located to the right of the cutting blade.

[0021] The heating plate heats the tires during the waste tire crushing process, softening the tire rubber and reducing its hardness. This not only makes it easier for the cutting blades to cut and crush the tires, improving crushing efficiency, but also reduces wear on the cutting blades and extends their service life. At the same time, the heating plate is mounted on a hinged seat, allowing the angle of the heating plate to be adjusted according to actual needs, so as to better adapt to the crushing of waste tires of different specifications and shapes.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The movable end of the electric telescopic rod moves to one side, pushing the two baffles together to close the feed inlet. The long plate then pushes the cutting blade to cut off the steel wire ring on the side of the waste rubber tire. At the same time, the cut-off steel wire rubber is recycled to prevent it from falling into the crushing device. This makes the crushed tire particles more uniform, prevents steel wire from entering the crusher, and improves the service life of the crusher.

[0023] 2. Multiple deployable swing rods limit the movement of the steel wire rubber ring and remove it from the rubber tire during the subsequent movement of the prism rod. This prevents the steel wire rubber ring from accidentally falling onto the prism rod and being carried into the crushing device below, thus preventing it from being crushed and cut along with the rubber tire. This indirectly improves the crushing effect and service life of the crusher.

[0024] 3. The heating plate can heat the tires during the waste tire crushing process, softening the tire rubber and reducing its hardness. At the same time, when the cutting blade cuts clockwise, the heating plate is located on the right side of the cutting blade. This not only makes it easier for the cutting blade to cut and crush the tires, improving crushing efficiency, but also reduces the wear of the cutting blade and extends its service life. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the crusher shell in this invention; Figure 3 This is a schematic diagram of the internal structure of the funnel cavity in this invention; Figure 4 This is a front view of the first telescopic rod in this invention. Figure 5 for Figure 4 Schematic diagram of the structure in direction A; Figure 6 This is a schematic diagram of the material guide plate in this invention; Figure 7 This is a schematic diagram of the internal structure of the second telescopic rod in this invention.

[0026] In the diagram: 1. Crusher shell; 2. Funnel cavity; 3. Electric telescopic rod; 4. Long plate; 5. Slide rod; 6. Second connecting block; 7. Storage box; 8. Second telescopic rod; 801. Third compression spring; 9. Limiting plate; 901. Raised stripe; 10. Slide rail; 11. Sliding block; 12. Drive motor; 13. First connecting block; 14. First telescopic rod; 15. Bolt; 16. Cutting blade; 17. Heating plate; 18. Placement slot; 19. Baffle; 20. Arc-shaped placement block; 21. Cylinder; 22. Prismatic rod; 23. Swing rod; 24. Screw; 25. Second compression spring; 26. Protrusion; 27. Groove; 28. Guide plate; 29. ​​Discharge window; 30. First compression spring; 31. Discharge port; 32. Guide rail; 33. Notch; 35. Crushing roller. Detailed Implementation

[0027] Please see Figures 1 to 7 This invention provides a waste tire shredder, the technical solution of which is as follows: A waste tire shredder includes a shredder housing 1, inside which two shredding rollers 35 are installed. Each shredding roller 35 has a feed inlet, and above the feed inlet is a funnel cavity 2. The width of the funnel cavity 2 is greater than the overall thickness of a conventional tire. Two symmetrically arranged placement slots 18 are opened on the shredder housing 1, located on either side of the feed inlet. Each placement slot 18 is slidably connected to a baffle 19. An electric telescopic rod 3 is fixedly installed on the shredder housing 1. A long plate 4 is fixedly installed at the movable end of the electric telescopic rod 3. A sliding rod 5 is fixedly installed at one end of the baffle 19, sliding on the long plate 4. A first compression spring 30 is sleeved on the sliding rod 5, with both ends of the first compression spring 30 abutting against the baffle 19 and the long plate 4 respectively. A drive motor 12 is installed on the long plate 4. A cutting blade 16 is provided on one side of the drive motor 12, and a cutting assembly is installed between the cutting blade 16 and the output shaft of the drive motor 12.

[0028] The cutting assembly includes a slide rail 10 mounted on a long plate 4, a sliding block 11 slidably connected to the slide rail 10, a screw 24 threadedly connected to the sliding block 11 to abut against the long plate 4, a drive motor 12 fixedly mounted on the sliding block 11, a first connecting block 13 fixedly mounted on the output shaft of the drive motor 12, a first telescopic rod 14 fixedly mounted on both ends of the first connecting block 13, a bolt 15 threadedly connected to the fixed end of the first telescopic rod 14, a second connecting block 6 fixedly mounted on the movable end of the first telescopic rod 14, and a cutting blade 16 fixedly mounted on the second connecting block 6.

[0029] A cylinder 21 is fixedly installed on each of the two first connecting blocks 13. A prism groove is opened on the cylinder 21. A prism rod 22 is slidably connected in the prism groove. A second compression spring 25 is placed in the prism groove and abuts against the prism rod 22. A groove 27 is opened on one side of the prism rod 22. A protrusion 26 is fixedly installed on the other side of the prism rod 22. The protrusion 26 is generally shaped like a frustum. When the movable end of the electric telescopic rod 3 moves to the set position, the protrusion 26 enters the groove 27 and meshes with the groove 27.

[0030] Four notches 33 are provided on both sides of the prism rod 22. The notches 33 are arranged in a ring around the prism rod 22. A swing rod 23 is rotatably connected in the notch 33. A torsion spring connected to the swing rod 23 is installed in the notch 33. An inclined surface is provided at the end of the swing rod 23 away from the notch 33. When the swing rod 23 and the prism rod 22 form a 30° angle, the inclined surface is set perpendicular to the ground.

[0031] Guide rails 32 are fixedly installed on both sides of the baffle 19. Two symmetrically arranged arc-shaped placement blocks 20 are slidably connected on the guide rails 32. The arc-shaped placement blocks 20 are located on the side of the two baffles 19 that are close to each other.

[0032] The baffle 19 has a discharge port 31, and the crusher housing 1 has two symmetrically arranged discharge windows 29. One side of the discharge window 29 is provided with a guide plate 28, which is located below the discharge port 31. The guide plate 28 is fixedly installed inside the crusher housing 1. The other side of the discharge window 29 is connected to a storage box 7, and the two storage boxes 7 are fixedly installed on both sides of the crusher housing 1.

[0033] The funnel cavity 2 is provided with a plurality of evenly arranged limiting plates 9, and the limiting plates 9 are provided with a plurality of evenly arranged raised stripes 901. A second telescopic rod 8 is fixedly installed on the long plate 4, and a third compression spring 801 is installed inside the second telescopic rod 8. The movable end of the second telescopic rod 8 is fixedly installed with the limiting plate 9.

[0034] The second connecting block 6 is provided with a heating plate 17. The heating plate 17 is mounted on the second connecting block 6 through a hinge seat. When the drive motor 12 drives the second connecting block 6 to rotate clockwise, the heating plate 17 is located to the right of the cutting blade 16.

[0035] In practical use, the electric telescopic rod 3 pushes its movable end to one side, which in turn moves the long plate 4 on one side. The moving long plate 4 pushes the first compression spring 30, which it abuts against, to move, causing the two baffles 19 to move closer together and close the feed inlet. It should be noted that the position of the arc-shaped placement block 20 can be flexibly adjusted according to the size and shape of the waste tire. When the waste tire is placed in the crusher, the specific position of the arc-shaped placement block 20 can be adjusted to ensure that the waste tire is firmly clamped in the middle, ensuring that the waste tire will not shake or shift during the crushing process.

[0036] The cooperation between the slide rail 10 and the sliding block 11 allows for flexible adjustment of the positions of the drive motor 12 and the cutting blade 16, thus adapting to the cutting needs of waste tires of different sizes and shapes. The screw 24 fixes the position of the sliding block 11, ensuring the stability of the cutting process. The design of the first telescopic rod 14 further enhances the adjustment range of the cutting blade 16. By rotating the bolt 15, the length of the first telescopic rod 14 can be changed, thereby precisely controlling the position and cutting depth of the cutting blade 16, improving the cutting accuracy and efficiency. Specifically, when adjustment is needed, rotating the screw 24 adjusts the specific position of the sliding block 11 on the slide rail 10, so that the output shaft center axis of the drive motor 12 coincides with the center axis of the tire to be crushed and recycled. Rotating the screw 24 fixes the specific position of the sliding block 11. At the same time, the position and diameter of the steel rim of the rubber tire are checked, and the specific position of the first telescopic rod 14 is adjusted by rotating the bolt 15, so that the cutting blade 16 at one end of the first telescopic rod 14 can cut off the tire ring containing the steel rim.

[0037] The movable end of the electric telescopic rod 3 continues to move. It should be noted that only one side of the sliding block 11 is equipped with the drive motor 12, while the first connecting block 13 on the other side is directly rotatably mounted to the sliding block 11. When the movable end of the electric telescopic rod 3 moves to a specific set position, the protrusion 26 can accurately enter the groove 27 and mesh with each other, thereby achieving precise positioning and stable connection of the relevant components. This precise meshing connection method can effectively transfer the rotational force on one side to the other side, causing the other side to rotate simultaneously. At the same time, because the output shaft of the motor is fixedly mounted with the telescopic rod and cutting blade 16 and other parts, the output shaft of the drive motor 12 is affected by a certain amount of gravity, which reduces the service life of the drive motor 12. However, by supporting the first telescopic rod 14 and other parts with the two interconnected prism rods 22, excessive force on one side of the output shaft of the drive motor 12 is avoided, improving the stability and reliability of the overall structure of the crusher.

[0038] Meanwhile, the electric telescopic rod 3 pushes the second telescopic rod 8 and the limiting plate 9 to move and abut against the rubber tire to be cut and recycled through the long plate 4. The design of the second telescopic rod 8 in conjunction with the third compression spring 801 allows the limiting plate 9 to be adaptively adjusted according to the actual size of the waste tire, further improving the applicability and crushing effect of the crusher. By setting multiple evenly distributed limiting plates 9 and the raised stripes 901 on them, the friction of the waste tire in the funnel cavity 2 can be effectively increased, preventing the waste tire from sliding or deviating when the cutting blade 16 cuts the waste tire, and ensuring the stable operation when cutting the steel wire ring part of the waste tire.

[0039] At this time, the continuously rotating cutting blade 16 can cut off the rubber ring with steel rim. The setting of the heating plate 17 can heat the tire during the waste tire crushing process, soften the tire rubber and reduce its hardness. This not only makes it easier for the cutting blade 16 to cut and crush the tire, improving the crushing efficiency, but also reduces the wear of the cutting blade 16 and extends its service life. At the same time, the heating plate 17 is installed through the hinge seat, so that the angle of the heating plate 17 can be adjusted according to actual needs to better adapt to the crushing work of waste tires of different specifications and shapes.

[0040] After cutting, the electric telescopic rod 3 moves the long plate 4 backward. The cut rubber wire ring can be opened by the cutting blades 16 on both sides and will not fall off. When the cutting blades 16 move backward as a whole, the crusher shell 1 blocks the movement of the rubber wire ring, allowing the rubber wire ring to enter the discharge port 31 and be pushed into the storage box 7 by the guide plate 28 below. The guide plate 28 can greatly improve the crushing efficiency of waste rubber tires. When the cut rubber ring with steel wire may fall downward and fall onto the prism rod 22 connected in the middle, the electric telescopic rod 3 moves the prism rod 22, causing the prism rods 22 on both sides to separate from each other. The fallen rubber ring with steel wire will be taken away with the rubber tire. Therefore, the rubber ring with steel wire is limited by multiple deployable swing rods 23, and the rubber ring with steel wire is removed from the rubber tire during the subsequent movement of the prism rod 22 to prevent the rubber ring with steel wire from being crushed and cut along with the rubber tire.

[0041] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A waste tire shredder characterized by, The utility model relates to a broken machine, including the broken machine shell (1), two broken rollers (35) are installed in the broken machine shell (1), the broken roller (35) is equipped with the feed inlet, the top of feed inlet is funnel cavity (2), the width of funnel cavity (2) is greater than the overall thickness of conventional tire, the broken machine shell (1) is provided with two symmetrical placement slot (18) that set up, the placement slot (18) is located the both sides position of feed inlet, the placement slot (18) is slidably connected with baffle (19) in, the broken machine shell (1) is fixedly installed with electric telescopic handle (3), the movable end of electric telescopic handle (3) is fixedly installed with long board (4), the one end of baffle (19) is fixedly installed with slide rod (5), the slide rod (5) slides on long board (4), the first compression spring (30) is sleeved on the slide rod (5), and the both ends of first compression spring (30) are respectively with baffle (19) and long board (4) abut, drive motor (12) is installed on long board (4), one side of drive motor (12) is equipped with cutting blade (16), cutting assembly is installed between cutting blade (16) and the output shaft of drive motor (12).

2. A waste tire shredder according to claim 1, characterized in that, The cutting assembly includes a slide rail (10) mounted on the long board (4), a sliding block (11) slidably connected to the slide rail (10), a screw (24) threadedly connected to the sliding block (11) and abutting against the long board (4), a drive motor (12) fixedly installed on the sliding block (11), a first connecting block (13) fixedly installed on the output shaft of the drive motor (12), a first telescopic rod (14) fixedly installed at both ends of the first connecting block (13), a bolt (15) threadedly connected to the fixed end of the first telescopic rod (14), and a second connecting block (6) fixedly installed at the movable end of the first telescopic rod (14). The cutting blade (16) is fixedly installed on the second connecting block (6).

3. A waste tire shredder according to claim 2, wherein, A cylinder (21) is fixedly installed on each first connecting block (13), a prismatic slot is formed in the cylinder (21), a prismatic rod (22) is slidably connected in the prismatic slot, a second compression spring (25) is placed in the prismatic slot and abuts against the prismatic rod (22), a recess (27) is formed in one prismatic rod (22), and a protrusion (26) is fixedly installed on the other prismatic rod (22). The protrusion (26) is in the form of a circular truncated cone, and when the movable end of the electric telescopic handle (3) moves to a set position, the protrusion (26) enters the recess (27) and is engaged with the recess (27).

4. A waste tire shredder as defined in claim 3, wherein, The baffle (19) is provided with a discharge port (31), the crusher shell (1) is provided with two symmetrically arranged discharge windows (29), one side of the discharge window (29) is provided with a guide plate (28), one side of the guide plate (28) is located below the discharge port (31), the guide plate (28) is fixedly installed in the crusher shell (1), the other side of the discharge window (29) is connected with a storage box (7), and the two storage boxes (7) are fixedly installed on the two sides of the crusher shell (1).

5. A waste tire shredder as defined in claim 2, wherein, The baffle (19) is provided with a discharge port (31), the crusher shell (1) is provided with two symmetrically arranged discharge windows (29), one side of the discharge window (29) is provided with a guide plate (28), one side of the guide plate (28) is located below the discharge port (31), the guide plate (28) is fixedly installed in the crusher shell (1), the other side of the discharge window (29) is connected with a storage box (7), and the two storage boxes (7) are fixedly installed on the two sides of the crusher shell (1).

6. A waste tire shredder as defined in claim 4, wherein, The prismatic rod (22) is provided with four notched grooves (33), the notched grooves (33) are annularly arranged on the prismatic rod (22), the notched grooves (33) are rotatably connected with the swing rods (23), the notched grooves (33) are provided with torsion springs connected with the swing rods (23), and the swing rods (23) are provided with inclined surfaces at the ends away from the notched grooves (33).

7. A waste tire shredder as defined in claim 2, wherein, The funnel cavity (2) is provided with a plurality of uniformly arranged limiting plates (9), the limiting plates (9) are provided with a plurality of uniformly arranged convex stripes (901), the long plate (4) is fixedly provided with a second telescopic rod (8), the second telescopic rod (8) is provided with a third compression spring (801), and the movable end of the second telescopic rod (8) is fixedly connected with the limiting plate (9).

8. A waste tire shredder as defined in claim 2, wherein, The second connecting block (6) is provided with a heating plate (17), the heating plate (17) is installed on the second connecting block (6) through a hinge seat, when the driving motor (12) drives the second connecting block (6) to rotate clockwise, the heating plate (17) is located at the right side of the cutting blade (16).

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