Wheel type stone crusher

Abstract

The wheel type stone crusher comprises long and short stone crushing tooth sets, the long and short stone crushing tooth sets are arranged progressively to effectively improve the stone crushing efficiency and quality, wear-resistant coatings are arranged on the surfaces of the long and short stone crushing tooth sets, and the taper and the length are reasonably designed; and the crushing requirements of materials with different hardness and different humidity can be flexibly met. And high-efficiency crushing of granite and basalt with relatively high hardness and clay and shale with relatively high humidity can be realized. And the method is higher in adaptability and can be widely applied to multiple fields such as mining, building demolition and road construction. The shell is made of high-strength alloy steel, the internal space layout is scientific, all parts operate in a coordinated mode, and protection and durability are achieved. The design of sealing pieces at the power end and the fixed end pays attention to stability, sealing performance and maintainability, and the whole equipment is stable in operation, efficient and low in maintenance cost. The device is simple in structure, convenient to disassemble and maintain and long in service life.

Description

Technical Field

[0001] This invention relates to the field of stone crusher technology, specifically a wheel-type stone crusher. Background Technology

[0002] A stone crusher is a device that uses mechanical forces such as impact, compression, and grinding to crush large materials into stones of the required particle size. It mainly consists of a crushing chamber, a moving jaw / rotor, a fixed jaw / liner, an eccentric shaft, and springs. The moving jaw and fixed jaw (or the rotor and liner) work together to form the crushing working area. Effective cooling and wear-resistant protection of the crushing components are essential for ensuring the continuous and efficient operation of the stone crusher; existing technologies still have room for optimization under extreme working conditions.

[0003] Based on the crushing principle, crushers can be divided into jaw crushers, cone crushers, and impact crushers. Jaw crushers use the periodic oscillation of a moving jaw to compress materials. They have a simple structure, reliable operation, and are suitable for coarse crushing; however, the uniformity of the product particle size is not ideal. Cone crushers use an eccentric shaft to drive the rotating moving cone, generating compression, bending, and shearing effects on the material. They have a large crushing ratio and produce uniform product particle size, making them suitable for medium and fine crushing. Compared to jaw crushers, the biggest advantage of cone crushers is their higher crushing efficiency and lower energy consumption. Their disadvantages include a relatively complex structure, greater equipment weight, higher requirements for feed particle size and uniformity, and extreme difficulty in handling material blockage. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a wheel-type stone crusher. The crushing teeth in the long and short crushing tooth assembly are arranged in a progressive manner, effectively improving the efficiency and quality of crushing. The surface of the long and short crushing tooth assembly is coated with a wear-resistant coating. The feed hopper employs an inclined design, effectively guiding material into the crushing chamber. The long and short crushing teeth on the two drive shafts of the crushing chamber are arranged in opposite directions, and the teeth mesh with each other, enhancing material flowability and force uniformity, thereby improving crushing efficiency. The seals provide excellent sealing performance and are easy to maintain. The drive shafts have good balance and possess fatigue resistance and corrosion resistance. Overall, this stone crusher is stable, efficient, and has a long service life.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a wheeled stone crusher, the wheeled stone crusher comprising:

[0006] The shell is divided into an upper feeding hopper and a lower crushing chamber, with a discharge port at the bottom of the crushing chamber;

[0007] A drive shaft assembly, comprising at least two drive shafts arranged in parallel, the drive shafts being rotatably disposed within the crushing chamber, one end of each drive shaft being a fixed end and the other end being a power end, the power end being used to connect to an external drive mechanism;

[0008] A set of long and short crushing teeth, wherein the set of long and short crushing teeth is connected to the drive shaft, and each drive shaft is connected to at least one set of long and short crushing teeth. The set of long and short crushing teeth includes at least two crushing teeth, and the length of each crushing tooth in the same set of long and short crushing teeth increases progressively.

[0009] Furthermore, the drive shaft and the long and short crushing tooth assembly are fixed together by keying or welding. Keying ensures precise transmission between them, while welding provides a more robust connection, guaranteeing that the drive shaft and the long and short crushing tooth assembly work together effectively during the operation of the wheel crusher, preventing loosening or misalignment. The surface of the crushing teeth in the long and short crushing tooth assembly is coated with a wear-resistant coating. This coating effectively improves the wear resistance of the crushing teeth, extends their service life, and reduces equipment failures and maintenance costs caused by tooth wear.

[0010] Furthermore, the taper of the long and short stone crushing tooth group is 1:3 to 1:5.

[0011] Furthermore, the long and short stone crushing tooth group includes seven stone crushing teeth, and the ratio of the curvature of each stone crushing tooth is 7:8:9:10:11:12:13.

[0012] Furthermore, the power end is equipped with a flange for connecting to external equipment. The flange facilitates connection between the wheeled crusher and other external equipment, ensuring connection stability and sealing. The power end is also equipped with a coupling for connecting to the drive mechanism. This coupling smoothly transmits power from the drive mechanism to the wheeled crusher, reducing power loss and vibration during transmission and ensuring stable and efficient operation. Both ends of the drive shaft are connected to the wheeled crusher's housing via seals. The long and short crushing tooth assemblies and the drive shaft are both housed inside the housing. The housing protects the long and short crushing tooth assemblies and the drive shaft from external influences and damage.

[0013] The power end is equipped with a commutator, which optimizes the working performance of the wheeled crusher, making it more adaptable to handling stones of different hardness and size. The forward and reverse rotation function enabled by the commutator improves crushing efficiency and reduces wear and tear that may occur due to unidirectional operation.

[0014] In addition, in the same drive shaft assembly, the long and short crushing teeth on the two drive shafts are arranged in opposite directions, and the long and short crushing teeth on the two drive shafts mesh with each other. This design further enhances the stability of the crushing process, ensuring that the stone can be subjected to force evenly during processing, thereby avoiding jamming caused by local stress concentration.

[0015] The combination of the commutator and the long and short crushing tooth assembly can also effectively reduce the noise and vibration during equipment operation, and improve the overall comfort of the working environment.

[0016] The wheel crusher is also equipped with an overload protection device on its power end. This device can cut off the power input when the equipment load exceeds a preset value, preventing damage from overload operation and extending the equipment's service life.

[0017] The drive mechanism includes a motor, a reducer, and a transmission belt. The motor output shaft is connected to the input end of the reducer via the transmission belt, and the output end of the reducer is connected to the transmission shaft via a key. A soundproof protective cover is provided on the outside of the motor.

[0018] The bottom of the housing is equipped with a shock-absorbing support assembly, which includes a support leg. The top and bottom of the support leg are fixedly connected to the housing by a seventh fixing bolt. A spring shock absorber is installed in the middle of the support leg. The spring shock absorber consists of a compensating spring and a compensating spring washer. The support leg can effectively absorb the impact force generated during the operation of the equipment, while the spring shock absorber further enhances the overall shock absorption effect, ensuring that the equipment maintains stable performance during long-term operation.

[0019] The wheel crusher features a funnel-shaped feed hopper, which facilitates smooth material entry into the crushing chamber. The inner wall of the feed hopper is polished to reduce resistance during material transport and prevent blockages. The funnel-shaped feed hopper effectively guides material flow to the long and short crushing teeth, ensuring uniform force on the material during crushing. An adjustable baffle is installed at the discharge port; adjusting the baffle angle controls the discharge speed to meet the needs of different operating conditions.

[0020] The wheeled crusher's sealing components include a power-end seal and a fixed-end seal. The power-end seal refers to the sealing component located between the power-end sealing cover and the power-end bearing sleeve, including a power-end key, a power-end secondary bearing support, a power-end secondary pressure cover, a power-end main bearing support, a power-end sealing cover, a power-end main pressure cover, a power-end bearing sleeve, and a power-end bearing. The power-end sealing cover is fixedly connected to the housing using a fourth and a sixth fixing bolt; the power-end sealing cover is fixedly connected to the power-end main pressure cover using a fifth fixing bolt; and the power-end bearing sleeve is fixedly connected to the drive shaft using a power-end key.

[0021] The fixed-end seal refers to the sealing component between the fixed-end sealing cover and the fixed-end bearing sleeve, including the fixed-end main pressure cover, the fixed-end main bearing support, the fixed-end secondary pressure cover, the fixed-end bearing, the fixed-end sealing cover, the retaining ring, the fixed-end bearing sleeve, the fixed-end secondary bearing support, and the sealing ring. The fixed-end sealing cover is fixedly connected to the housing by the first and third fixing bolts; the fixed-end sealing cover is fixedly connected to the fixed-end main pressure cover by the second fixing bolt; and the fixed-end bearing sleeve is fixedly connected to the drive shaft by a fixed-end key.

[0022] The sealing rings are made of materials with high temperature and corrosion resistance, maintaining excellent sealing performance even in harsh working environments. This prevents dust and impurities from entering the equipment, thus extending its service life. The design of the fixed-end seals prioritizes stability and durability, further enhancing the sealing effect through a multi-layer sealing structure to ensure no leakage occurs during long-term operation. Furthermore, both the power-end and fixed-end seals are easy to disassemble and replace, reducing maintenance difficulty and costs.

[0023] The drive shaft of the wheel crusher undergoes high-frequency quenching, fine grinding, and polishing, followed by laser cladding to give it high fatigue strength and high corrosion resistance. This allows it to adapt to complex working conditions and ensures good balance during high-speed operation, thereby reducing vibration and noise during equipment operation.

[0024] In addition, the connection between the long and short crushing tooth assemblies and the drive shaft not only ensures the stability of power transmission, but also facilitates disassembly and maintenance, improving the overall operability of the equipment.

[0025] The shell is made of high-strength alloy steel, which has excellent impact resistance and durability, and can maintain the integrity of the structure during long-term use.

[0026] By employing the above technical solutions, the beneficial effects of the present invention are as follows:

[0027] 1. The crushing efficiency is effectively improved. By adopting a wheel structure design with long and short crushing teeth, the crusher of the present invention forms a crushing chamber with long crushing teeth and short crushing teeth in a staggered meshing manner during operation. This allows for multi-stage and alternating compression and shearing of materials. Compared with the existing crushers with a single tooth shape or parallel gear structure, the present invention can make the residence time of materials in the crushing chamber more reasonable and the crushing path more optimized.

[0028] 2. Good uniformity of crushed particle size: The tooth height, tooth spacing and tooth tip gap of the long and short crushing teeth are precisely matched and designed. The long crushing teeth are mainly responsible for the initial crushing of large pieces of material, while the short crushing teeth are used for fine crushing and shaping of the material after the initial crushing. This graded crushing mechanism results in a narrow particle size distribution range of the crushed material. Compared with the existing technology where crushed products are prone to having excessively large or small particles, this invention can stably output crushed stone particle size that meets the requirements of engineering standards such as construction and roads, reducing the workload of subsequent screening processes.

[0029] 3. Reduced energy consumption and environmental protection: This invention optimizes the gear transmission ratio and crushing chamber profile, making fuller use of the motor output power. At the same time, the meshing method of long and short crushing teeth reduces the hard impact between the material and the gear surface, reducing noise pollution during equipment operation, which meets the energy-saving and environmental protection requirements of modern industrial production.

[0030] 4. Extended equipment service life: The long and short crushing teeth are made of high-strength wear-resistant materials and the hardness and wear resistance of the tooth surface are improved through heat treatment. During the crushing process, the long and short crushing teeth are subjected to force alternately, avoiding the situation where a single gear is subjected to overload for a long time, effectively reducing the wear rate of the gear. In addition, the gear structure design of this invention is easy to disassemble and replace, reducing the maintenance cost of the equipment and significantly extending the overall service life of the equipment.

[0031] 5. Wide range of applicable materials: By adjusting the speed ratio and meshing gap of the long and short crushing teeth, this invention can flexibly adapt to the crushing needs of materials with different hardness and moisture content. Whether it is granite and basalt with high hardness, or clay and shale with high moisture content, it can achieve efficient crushing and has stronger adaptability. It can be widely used in many fields such as mining, building demolition, and road construction.

[0032] To make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 A front cross-sectional view of the wheeled stone crusher provided by the present invention;

[0035] Figure 2 for Figure 1 Cross-sectional view of the middle section (BB);

[0036] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0037] Figure 4 Bit Figure 3 Enlarged schematic diagram of the structure at point C.

[0038] The reference numerals in the above figures are as follows: 1. First fixing bolt; 2. Main pressure cap at the fixing end; 3. Main bearing support at the fixing end; 4. Secondary pressure cap at the fixing end; 5. Bearing at the fixing end; 6. Sealing cap at the fixing end; 7. Snap ring; 8. Flat key at the fixing end; 9. Second fixing bolt; 10. Bearing sleeve at the fixing end; 11. Third fixing bolt; 12. Secondary bearing support at the fixing end; 13. Housing; 14. Sealing ring; 15. Long and short stone crushing tooth assembly; 16. Flat key at the power end; 17. Secondary bearing support at the power end; 18. Secondary pressure cap at the power end; 19. Power... 20. Main bearing support at the end; 21. Power end sealing cover; 22. Fourth fixing bolt; 23. Power end main pressure cover; 24. Flange bolt; 25. Power end bearing sleeve; 26. Flange; 27. Power end bearing; 28. Fifth fixing bolt; 29. ​​Drive shaft; 30. Sixth fixing bolt; 31. Support leg; 31. Spring shock absorber; 311. Compensating spring; 312. Compensating spring washer; 32. Baffle; 33. Feed hopper; 34. Feed inlet; 35. Discharge outlet; 36. Crushing chamber; 37. Seventh fixing bolt. Detailed Implementation

[0039] 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.

[0040] It should be noted that in the description of this invention, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0041] Example: This example discloses a wheeled stone crusher, which includes:

[0042] The housing 13 is divided into an upper feed hopper 33 and a lower crushing chamber 36. The bottom of the crushing chamber 36 is provided with a discharge port 35.

[0043] At least one drive shaft assembly, comprising two drive shafts 28 arranged in parallel, the drive shafts 28 being rotatably disposed within the crushing chamber 36, one end of each drive shaft 28 being a fixed end and the other end being a power end, the power end being used to connect to an external drive mechanism; the fixed end being used to ensure the installation and stable operation of the wheel crusher, the power end providing power input and being responsible for receiving external power to drive the wheel crusher to carry out its work;

[0044] A set of long and short crushing teeth 15 is provided, which is connected to the drive shaft 28. Each drive shaft 28 is connected to at least one set of long and short crushing teeth 15. Each set of long and short crushing teeth 15 includes at least two crushing teeth, and the length of each crushing tooth in the same set of long and short crushing teeth 15 increases progressively.

[0045] The feed hopper 33 of the wheel crusher is designed in a funnel shape, which facilitates the smooth entry of materials into the crushing chamber. The inner wall of the feed hopper is polished to reduce the resistance encountered by the material during transportation, avoid blockage, and effectively guide the material flow to the crushing chamber 36.

[0046] Within the crushing chamber 36, in the same drive shaft assembly, the long and short crushing tooth groups 15 on the two drive shafts 28 are arranged in opposite directions, and the long and short crushing tooth groups 15 on the two drive shafts 28 mesh with each other. This ensures that the material receives a uniform force during the crushing process, improving crushing efficiency while reducing energy consumption.

[0047] An adjustable baffle 32 is provided at the outlet of the discharge port 35. By adjusting the angle of the baffle 32, the discharge speed can be controlled to meet the requirements of different working conditions.

[0048] A shock-absorbing support assembly is installed at the bottom of the housing 13. The shock-absorbing support assembly includes support legs 30, the top and bottom of which are fixedly connected to the housing via seventh fixing bolts 37. A spring shock absorber 31 is installed in the middle of the support leg 30. Figure 4 As shown, this spring damper 31 consists of a compensating spring 311 and a compensating spring washer 312. The support leg 30 can effectively absorb the impact force generated during equipment operation, while the spring damper 31 further enhances the overall damping effect, ensuring that the equipment maintains stable performance during long-term operation.

[0049] The long and short stone crushing tooth assembly 15 and the drive shaft 28 are both housed inside the housing 13. The housing 13 protects the long and short stone crushing tooth assembly 15 and the drive shaft 28 from external factors and damage.

[0050] The drive shaft 28 and the long and short crushing tooth assembly 15 are fixed together by keying or welding. Keying ensures precise transmission between them, while welding provides a more stable connection, ensuring that the drive shaft 28 and the long and short crushing tooth assembly 15 work together during the operation of the wheel crusher, preventing loosening or misalignment. The crushing teeth of the long and short crushing tooth assembly 15 are coated with a wear-resistant coating. This coating effectively enhances the wear resistance of the crushing teeth, extends their service life, and reduces equipment failures and maintenance costs caused by tooth wear.

[0051] Optionally, the taper of the long and short crushing tooth assembly 15 is 1:3 to 1:5. A reasonable taper design allows the long and short crushing tooth assembly 15 to function better in crushing operations, improving the crushing effect and efficiency.

[0052] Optionally, the long and short crushing tooth group 15 includes seven crushing teeth, and the ratio of the arc of each crushing tooth is 7:8:9:10:11:12:13. This ratio design makes the division of labor of each crushing tooth clear, forming a continuous gradient from biting, crushing to discharge, effectively improving the overall crushing efficiency and reducing the load on a single crushing tooth, thus extending its service life.

[0053] The power end is equipped with a commutator, which optimizes the working performance of the wheeled crusher, making it more adaptable to handling stones of different hardness and size. The forward and reverse rotation function enabled by the commutator not only improves crushing efficiency but also reduces wear problems that may occur due to unidirectional operation. Furthermore, in the same drive shaft assembly, the long and short crushing tooth sets 15 on the two drive shafts 28 are arranged in opposite directions, and the long and short crushing tooth sets 15 on the two drive shafts 28 mesh with each other. This design further enhances the stability of the crushing process, ensuring that the stone is evenly stressed during processing, thereby avoiding jamming caused by localized stress concentration. Combined with the commutator design, it also effectively reduces noise and vibration during equipment operation, improving the overall comfort of the working environment. To further improve the reliability of the equipment, the power end of the wheeled crusher is also equipped with an overload protection device. This device can cut off the power input when the equipment load exceeds a preset value, preventing damage due to overload operation and extending the service life of the equipment.

[0054] The power end is connected to a flange 25 for connection with external equipment via flange bolts 23. The flange 25 facilitates connection between the wheeled crusher and other external equipment, ensuring connection stability and sealing. The power end is equipped with a coupling for connection with the drive mechanism. The coupling smoothly transmits power from the drive mechanism to the wheeled crusher, reducing power loss and vibration during transmission, and ensuring stable and efficient operation of the wheeled crusher. Both ends of the drive shaft 28 are connected to the casing 13 of the wheeled crusher via seals.

[0055] The sealing components include a power end seal and a fixed end seal. The power end seal refers to the seal between the power end sealing cover and the power end bearing sleeve, including a power end key 16, a power end secondary bearing support 17, a power end secondary pressure cover 18, a power end main bearing support 19, a power end sealing cover 20, a power end main pressure cover 22, a power end bearing sleeve 24, and a power end bearing 26. Specifically, the power end sealing cover 20 is fixedly connected to the housing 13 by a fourth fixing bolt 21 and a sixth fixing bolt 29; the power end sealing cover 20 is fixedly connected to the power end main pressure cover 22 by a fifth fixing bolt 27; and the power end bearing sleeve 24 is fixedly connected to the drive shaft 28 by the power end key 16.

[0056] The fixed-end seal refers to the seal between the fixed-end sealing cover and the fixed-end bearing sleeve, including the fixed-end main pressure cover 2, the fixed-end main bearing support 3, the fixed-end secondary pressure cover 4, the fixed-end bearing 5, the fixed-end sealing cover 6, the retaining ring 7, the fixed-end bearing sleeve 10, the fixed-end secondary bearing support 12, and the sealing ring 14. The fixed-end sealing cover 6 is fixedly connected to the housing 13 by the first fixing bolt 1 and the third fixing bolt 11; the fixed-end sealing cover 6 is fixedly connected to the fixed-end main pressure cover 2 by the second fixing bolt 9; and the fixed-end bearing sleeve 10 is fixedly connected to the drive shaft 28 by the fixed-end flat key 8. The sealing ring 14 is made of high-temperature and corrosion-resistant materials, maintaining good sealing performance in harsh working environments, preventing dust and impurities from entering the equipment, and thus extending the equipment's service life. The design of the fixed-end seal focuses on stability and durability, further improving the sealing effect through a multi-layer sealing structure to ensure that the equipment will not leak during long-term operation. Furthermore, both the power-end and fixed-end seals are easy to disassemble and replace, reducing maintenance difficulty and cost.

[0057] The drive mechanism includes a motor, a reducer, and a transmission belt. The motor output shaft is connected to the input end of the reducer via the transmission belt, and the output end of the reducer is connected to the transmission shaft via a key. A soundproof protective cover is provided on the outside of the motor.

[0058] The surface of the drive shaft 28 is subjected to high-frequency quenching, fine grinding, and polishing, followed by laser cladding to give it high fatigue strength and corrosion resistance, enabling it to adapt to complex working conditions. It also ensures good balance during high-speed operation, thereby reducing vibration and noise during equipment operation and adapting to complex working conditions.

[0059] In summary, the long and short crushing tooth assembly 15 is fixed to the drive shaft 28 by key connection or welding and placed inside the housing 13. When the long and short crushing tooth assembly 15 rotates under the drive shaft 28, it forms a staggered meshing working area. The material in the crushing chamber can be regarded as "particle fluid". The long crushing teeth initially crush large pieces of material, and their rotation is like a stirring paddle or a turbulence element, pushing and disturbing the surrounding material and increasing the velocity gradient between particles. The short crushing teeth refine the crushing and shaping of the initially crushed material. Due to their small size and staggered meshing with the long teeth, they change the flow field structure of the "particle fluid". Multi-stage, alternating extrusion and shearing action causes the material to gradually "flow" and "deform" from the inlet to the outlet. The material crushed by the long teeth enters the working area of ​​the short teeth as "upstream fluid", and the short teeth further "refine" the "fluid".

[0060] The drive shaft 28 is supported by a power-end bearing 26 and a fixed-end bearing 5, and both ends are connected to the housing 13 via seals. The power-end sealing cover 20 and the fixed-end sealing cover 6 are respectively fixed to the housing 13 with bolts. The funnel-shaped feed hopper 33 is located above the housing 13 and communicates with the crushing chamber 36 below through the feed inlet 34. The crushing chamber 36 has a discharge outlet 35 at its bottom. This spatial layout ensures coordinated operation between the components and avoids interference or wear problems caused by insufficient space.

[0061] Furthermore, the housing 13 is made of high-strength alloy steel, which has strong impact resistance and durability, and can maintain structural integrity during long-term use. The connection between the long and short stone crushing tooth assembly 15 and the drive shaft 28 not only ensures the stability of power transmission, but also facilitates disassembly and maintenance, enhancing the overall operability of the equipment.

[0062] The working process of this invention is as follows:

[0063] The working process of the wheeled stone crusher provided by this invention is as follows:

[0064] The material to be crushed enters the equipment through a funnel-shaped feed hopper 33 located above the housing 13. The polished inner wall of the feed hopper 33 reduces material conveying resistance and prevents blockage. The material smoothly enters the crushing chamber 36 located below the feed hopper 33 through the feed inlet 34. After entering the crushing chamber 36, the material comes into contact with the long and short crushing tooth assembly 15 that rotates with the drive shaft 28.

[0065] The drive mechanism provides power for the crushing process. The motor output shaft is connected to the input end of the reducer via a drive belt, and the output end of the reducer is connected to the drive shaft 28 via a key. The power end is equipped with a flange 25 for easy connection to external equipment, and the power of the drive mechanism is smoothly transmitted to the drive shaft 28 via a coupling.

[0066] Driven by a power source, the transmission shaft 28 rotates the long and short crushing tooth assembly 15. The rotating long and short crushing teeth 15 form a staggered meshing crushing chamber 36, subjecting the material to multi-stage, alternating compression and shearing. The long crushing teeth are primarily responsible for the initial crushing of large pieces of material, while the short crushing teeth perform fine crushing and shaping of the initially crushed material. This staged crushing mechanism results in a more reasonable residence time for the material within the crushing chamber, a more optimized crushing path, and a narrower particle size distribution range after crushing. Simultaneously, the commutator on the power end enables forward and reverse rotation, optimizing adaptability to stones of different hardness and size, improving crushing efficiency, reducing wear that may occur with unidirectional operation, and lowering noise and vibration. The coordinated design of the long and short crushing teeth 15 ensures uniform force distribution on the stone, avoiding jamming caused by localized stress concentration.

[0067] During the crushing process, the long and short crushing gears 15 are subjected to alternating forces, avoiding long-term overload on a single gear and effectively reducing the gear wear rate. Both the long and short crushing gears 15 and the drive shaft 28 are made of high-strength wear-resistant materials, and the hardness and wear resistance of the tooth surface are improved through a special heat treatment process.

[0068] The crushed material is discharged from the discharge port 35 located at the bottom of the crushing chamber 36. An adjustable baffle 32 is located at the discharge port 35, and the discharge speed can be controlled by adjusting its angle to meet the needs of different working conditions.

[0069] During equipment operation, the shock-absorbing support assembly installed at the bottom of the housing 13 functions. This assembly includes support legs 30, whose top and bottom are fixedly connected to the housing by a seventh fixing bolt 37. A spring shock absorber 31, consisting of a compensating spring 311 and a compensating spring washer 312, is installed in the middle of the support legs 30. The support legs 30 effectively absorb the impact force generated during equipment operation, and the spring shock absorber 31 further enhances the overall shock absorption effect, ensuring stable performance of the equipment during long-term operation. In addition, the overload protection device on the power end can cut off the power input when the equipment load exceeds a preset value, preventing damage to the equipment due to overload operation.

[0070] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention shall fall within the protection scope of the present invention.

[0071] Specific embodiments have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A wheel-type stone crusher, characterized in that, include: The shell (13) is divided into an upper feed hopper (33) and a lower crushing chamber (36), and the bottom of the crushing chamber (36) is provided with a discharge port (35). At least one drive shaft assembly, the at least one drive shaft assembly includes two drive shafts (28) arranged in parallel, the drive shafts (28) are rotatably arranged in the crushing chamber (36), one end of the drive shaft (28) is a fixed end and the other end is a power end, the power end is used to connect an external drive mechanism; A set of long and short crushing teeth (15) is connected to the drive shaft (28). Each drive shaft (28) is connected to at least one set of long and short crushing teeth (15). The set of long and short crushing teeth (15) includes at least two crushing teeth, and the length of each crushing tooth in the same set of long and short crushing teeth (15) increases progressively.

2. The wheeled stone crusher as described in claim 1, characterized in that, In the same drive shaft group, the long and short stone crushing teeth (15) on the two drive shafts (28) are arranged in opposite directions, and the long and short stone crushing teeth (15) on the two drive shafts (28) mesh with each other.

3. The wheeled stone crusher as described in claim 2, characterized in that, The drive shaft (28) and the long and short stone crushing tooth assembly (15) are fixed by key connection or welding; The surface of the crushing teeth of the long and short crushing tooth group (15) is provided with a wear-resistant coating; The taper of the long and short stone crushing tooth group (15) is 1:3 to 1:5; The long and short stone crushing tooth group (15) includes seven stone crushing teeth, and the ratio of the arc of each stone crushing tooth is 7:8:9:10:11:12:

13.

4. The wheeled stone crusher as described in claim 1, characterized in that, The power end is equipped with a commutator, which can control the rotation direction of the drive shaft (28); The power unit is equipped with an overload protection device that can cut off the power input when the load exceeds a preset value.

5. The wheeled stone crusher as described in claim 1, characterized in that, The power end is provided with a flange (25) for connecting to external equipment. The power end is provided with a coupling for connection with the drive mechanism; The two ends of the drive shaft (28) are respectively connected to the housing of the wheel crusher through seals; The long and short stone crushing tooth assembly (15) and the drive shaft (28) are both located inside the housing (13).

6. The wheeled stone crusher as described in claim 1, characterized in that, The bottom of the housing (13) is equipped with a shock-absorbing support assembly, which includes a support leg (30). The top and bottom of the support leg (30) are fixedly connected to the housing (13) by a seventh fixing bolt (37). A spring shock absorber (31) is installed in the middle of the support leg (30). The spring shock absorber (31) is composed of a compensating spring (311) and a compensating spring washer (312).

7. The wheeled stone crusher as described in claim 1, characterized in that, The feed hopper (33) is designed in the shape of a funnel; An adjustable baffle (32) is provided at the outlet of the discharge port (35). The discharge speed can be controlled by adjusting the angle of the baffle (32).

8. The wheeled stone crusher as described in claim 5, characterized in that, The sealing components include a power end seal and a fixed end seal. The power end seal includes a power end key (16), a power end secondary bearing support (17), a power end secondary pressure cover (18), a power end main bearing support (19), a power end sealing cover (20), a power end main pressure cover (22), a power end bearing sleeve (24), and a power end bearing (26). The power end sealing cover (20) is fixedly connected to the housing (13) by a fourth fixing bolt (21) and a sixth fixing bolt (29). The power end sealing cover (20) is fixedly connected to the power end main pressure cover (22) by a fifth fixing bolt (27). The power end bearing sleeve (24) is fixedly connected to the drive shaft (28) by a power end key (16). The fixed end seal includes a fixed end main pressure cover (2), a fixed end main bearing support (3), a fixed end secondary pressure cover (4), a fixed end bearing (5), a fixed end sealing cover (6), a retaining ring (7), a fixed end bearing sleeve (10), a fixed end secondary bearing support (12), and a sealing ring (14). The fixed end sealing cover (6) is fixedly connected to the housing (13) by a first fixing bolt (1) and a third fixing bolt (11). The fixed end sealing cover (6) is fixedly connected to the fixed end main pressure cover (2) by a second fixing bolt (9). The fixed end bearing sleeve (10) is fixedly connected to the drive shaft (28) by a fixed end flat key (8).

9. The wheeled stone crusher as described in claim 1, characterized in that, The surface of the drive shaft (28) is subjected to high-frequency quenching, fine grinding and polishing, and then laser cladding. The shell (13) is made of high-strength alloy steel.

10. The wheeled stone crusher as described in claim 1, characterized in that, The drive mechanism includes a motor, a reducer and a transmission belt. The output shaft of the motor is connected to the input end of the reducer via the transmission belt, and the output end of the reducer is connected to the transmission shaft (28) via a key.

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