Crushing device for recycling and reusing road and building waste materials

Abstract

The crushing device comprises a machine body, a first conveying belt and a second conveying belt, a first crushing cavity and a second crushing cavity are formed in the machine body from top to bottom, and the first crushing cavity and the second crushing cavity communicate with each other through a discharging channel; the first conveying belt and the second conveying belt are arranged on one side of the machine body side by side up and down, and the output end of the first conveying belt and the output end of the second conveying belt extend to the position above the first smashing cavity and the position above the second smashing cavity through the first feeding cavity and the second feeding cavity correspondingly. The device is provided with the two crushing cavities, and the first crushing cavity and the second crushing cavity correspond to the coarse crushing function and the fine crushing function correspondingly. Materials with different particle sizes are respectively fed into different crushing chambers through the conveying belt and are subjected to targeted crushing treatment. And due to the multi-layer crushing design, the crushing process is finer, the crushing effect can be effectively improved, and the requirements of different application scenes are met.

Description

Technical Field

[0001] The present invention relates to the technical field of waste material recycling and reuse, and particularly to a crushing device and process for highway and construction waste material recycling and reuse. Background Art

[0002] In the process of recycling and reusing highway and construction waste materials, traditional crushing devices usually adopt a single crushing chamber and a simple conveying system. When dealing with waste materials, these devices often have the following deficiencies: Firstly, the single crushing chamber cannot effectively distinguish and process materials with different particle sizes, resulting in low crushing efficiency and poor consistency of the output materials; Secondly, the gap between the crushing wheels of traditional devices is fixed and cannot be adjusted according to the hardness of the materials, thus affecting the crushing efficiency and energy consumption. Summary of the Invention

[0003] The purpose of the present invention is to provide a crushing device for highway and construction waste material recycling and reuse to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A crushing device for highway and construction waste material recycling and reuse, including a machine body, a first conveyor belt and a second conveyor belt. Inside the machine body, a first crushing chamber and a second crushing chamber are respectively arranged from top to bottom and are connected through a feeding channel. Inside the first crushing chamber, a movable crushing wheel one and a fixed crushing wheel one are arranged in parallel. Inside the second crushing chamber, a movable crushing wheel two and a fixed crushing wheel two are arranged in parallel. The rotating shafts at both ends of the movable crushing wheel one and the movable crushing wheel two respectively extend to both sides of the machine body and are installed with movable plates. At the position of the machine body side wall corresponding to the movable plates, threaded rods are installed through support blocks. One end of the threaded rod is connected to the movable plate through a bearing, and the other end of the threaded rod penetrates through the support block and is installed with a handwheel; The first conveyor belt and the second conveyor belt are arranged in parallel up and down on one side of the machine body. The output ends of the first conveyor belt and the second conveyor belt respectively extend to the positions above the first crushing chamber and the second crushing chamber through a first feeding chamber and a second feeding chamber. A vibration motor is installed on one side of the first conveyor belt, and the first conveyor belt is evenly provided with screening holes. A feeding hopper is arranged at the bottom of the first conveyor belt, and the output end of the feeding hopper extends to the position above the second conveyor belt.

[0005] Preferably, the bottom of the machine body is fixedly supported by a base and evenly arranged first columns. One end of the top of the base is also provided with a second column, and the top of the second column is connected to the second conveyor belt.

[0006] Preferably, a servo motor is installed on one side of the second column. The driving wheel of the servo motor is connected to the driving wheel of the second conveyor belt through a first belt, and the driving wheel of the second conveyor belt is connected to the driving wheel of the first conveyor belt through a second belt.

[0007] Preferably, outer covers are provided on the outer sides of the first belt and the second belt.

[0008] Preferably, adjustment grooves are transversely provided at the positions of the body corresponding to the two ends of the rotating shafts of the first movable crushing wheel and the second movable crushing wheel, and sliding grooves are provided on both sides of the body of the adjustment grooves.

[0009] Preferably, sliders extending to the inner sides of the sliding grooves are provided at both ends of the movable plate, and locking bolts are installed on the movable plate.

[0010] Preferably, the crushing teeth of the first movable crushing wheel and the first fixed crushing wheel are larger than those of the second movable crushing wheel and the second fixed crushing wheel, and the crushing teeth of the first movable crushing wheel and the first fixed crushing wheel, and the second movable crushing wheel and the second fixed crushing wheel are arranged in an interlaced manner. The shapes of the crushing teeth are trapezoidal, with the tips facing outwards.

[0011] Preferably, crushing motors are installed at the positions of the body corresponding to the first fixed crushing wheel and the second fixed crushing wheel, and the output ends of the two crushing motors are respectively connected to the first fixed crushing wheel and the second fixed crushing wheel.

[0012] A crushing process for the recycling and reuse of highway and construction waste materials specifically includes the following steps: Step 1, when adjusting the positions of the first movable crushing wheel and the second movable crushing wheel before crushing, the operator first loosens the locking bolts, drives the screw rod to stretch by rotating the hand wheel, and then pushes the movable plate to move in the sliding groove. The movement of the movable plate drives the positions of the rotating shafts of the first movable crushing wheel and the second movable crushing wheel to change, so as to realize the adjustment of the distance between the crushing wheels. After the adjustment is completed, the position is fixed by using the locking bolts; Step 2, start the servo motor. The servo motor drives the second conveyor belt and the first conveyor belt to rotate synchronously through the first belt and the second belt. When the material is poured onto the first conveyor belt, the vibration motor starts. The small-particle waste materials enter the hopper through the screening holes and fall onto the second conveyor belt. The second conveyor belt and the first conveyor belt send the waste materials of different particle sizes into the body. The material on the first conveyor belt enters the first crushing chamber through the first feeding cavity. The first movable crushing wheel and the first fixed crushing wheel rotate at high speed under the drive of the crushing motor, and the material is crushed under the shearing and impact of the trapezoidal crushing teeth; Step 3, the preliminarily crushed material enters the second crushing chamber through the falling channel and continues to be finely crushed under the action of the second movable crushing wheel and the second fixed crushing wheel. At the same time, after the material on the second conveyor belt enters the second crushing chamber through the second feeding cavity, the second movable crushing wheel and the second fixed crushing wheel rotate at high speed under the drive of the crushing motor, and the material is crushed under the shearing and impact of the trapezoidal crushing teeth.

[0013] The present invention relates to a crushing device for the recycling of waste materials from roads and buildings. Compared with the prior art, it has significant beneficial effects as follows: 1. Improve crushing efficiency and material consistency: By designing an automatic conveying system, waste materials can be automatically fed into the crushing device, reducing the complexity and labor intensity of manual operation. The upper and lower parallel settings of conveyor belt one and conveyor belt two, combined with the design of vibration motors and screening holes, can separate crushed materials of different particle sizes in real time during the conveying process, ensuring the consistency of the output materials. This design not only improves the crushing efficiency but also guarantees the quality of the final product.

[0014] 2. Multi-level crushing to enhance the crushing effect: This device is provided with two crushing chambers. Crushing chamber one and crushing chamber two correspond to the functions of coarse crushing and fine crushing respectively. Materials of different particle sizes are fed into different crushing chambers through conveyor belts for targeted crushing treatment. This multi-level crushing design makes the crushing process more refined, can effectively enhance the crushing effect, and meet the requirements of different application scenarios.

[0015] 3. Flexibly adjust the crushing gap to reduce energy consumption: By adjusting the gap between the movable crushing wheel and the fixed crushing wheel, it can be flexibly adjusted according to the hardness of the material. This design not only improves the crushing efficiency but also can reduce energy consumption, reduce equipment wear, and extend the service life of the equipment on the premise of ensuring the crushing effect.

[0016] 4. Optimize the structural design to enhance the stability of the equipment: The bottom of the machine body is fixedly supported by a base and column one. Column two is connected to conveyor belt two, enhancing the overall stability of the equipment. The servo motor drives the conveyor belt through belt one and belt two, and the design of the outer protective cover further improves the safety and durability of the equipment. This optimized structural design enables the equipment to maintain stable and efficient operation during long-term operation.

[0017] 5. Improve the crushing tooth design to enhance the crushing ability: The crushing teeth of the movable crushing wheel and the fixed crushing wheel are trapezoidal in shape, with the tips facing outwards and arranged alternately. The crushing teeth of movable crushing wheel one and fixed crushing wheel one are larger than those of movable crushing wheel two and fixed crushing wheel two. This design makes the coarse crushing and fine crushing processes more efficient, enhances the crushing ability, and ensures the uniformity and thoroughness of the crushing effect.

[0018] 6. Environmental protection and resource recycling: This device effectively reduces the accumulation of waste and environmental pollution through the recycling and reuse of waste materials from roads and buildings, which is in line with the national policy orientation of energy conservation, emission reduction, and resource reuse. Through an efficient crushing and screening system, waste materials can be transformed into reusable particles, promoting the development of the circular economy.

[0019] 7. Simple operation and convenient maintenance: The device is equipped with a handwheel to adjust the threaded rod, with simple operation and convenient for adjusting the gap between the crushing wheels. The design of the slider and locking bolt makes the adjustment and fixation of the movable plate more convenient. The overall structure is reasonably designed, easy to maintain, reducing the maintenance cost and operation difficulty of the equipment.

[0020] In summary, through innovative designs and technical solutions, the present invention has significant advantages and positive effects compared with the prior art in terms of improving crushing efficiency, ensuring material consistency, reducing energy consumption, enhancing equipment stability, improving crushing capacity, environmental protection and resource reuse, and the convenience of operation and maintenance, and has broad application prospects and market value. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 It is a schematic diagram of the internal structure of the present invention; Figure 2 It is a schematic diagram of the rear view structure of the present invention; Figure 3 It is a schematic diagram of the internal side view structure of the present invention; Figure 4 It is for the present invention Figure 2 The enlarged structure schematic diagram at A in Figure 5 It is a schematic diagram of the first conveyor belt of the present invention; Figure 6 It is a schematic diagram of the second conveyor belt of the present invention; Figure 7 It is a process flow chart of the crushing of the invention; In the figure: 1. machine body; 2. feeding chamber 1; 3. crushing chamber 1; 4. movable crushing wheel 1; 5. material dropping channel; 6. crushing chamber 2; 7. movable crushing wheel 2; 8. column 1; 9. base; 10. fixed crushing wheel 2; 11. feeding chamber 2; 12. fixed crushing wheel 1; 13. vibration motor; 14. conveyor belt 1; 15. material dropping hopper; 16. belt 2; 17. conveyor belt 2; 18. belt 1; 19. servo motor; 20. column 2; 21. outer shield; 22. adjustment slot; 23. support block; 24. hand wheel; 25. slide slot; 26. locking bolt; 27. movable plate; 28. slider; 29. threaded rod; 30. screening hole; 31. crushing motor. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figures 1-7 An embodiment of the present invention is a pulverizing device for recycling and reusing road and construction waste materials, comprising a machine body 1, a conveyor belt 14 and a conveyor belt 2 17, wherein a pulverizing chamber 1 3 and a pulverizing chamber 2 6 connected by a material dropping channel 5 are respectively arranged inside the machine body 1 from top to bottom, and a movable pulverizing wheel 1 4 and a fixed pulverizing wheel 12 are arranged in parallel inside the pulverizing chamber 1 3, and a movable pulverizing wheel 2 7 and a fixed pulverizing wheel 2 10 are arranged in parallel inside the pulverizing chamber 2 6.

[0025] The crushing teeth of the movable crushing wheel 14 and the fixed crushing wheel 12 are larger than the crushing teeth of the movable crushing wheel 2 7 and the fixed crushing wheel 2 10, and the crushing teeth of the movable crushing wheel 14 and the fixed crushing wheel 12, the movable crushing wheel 2 7 and the fixed crushing wheel 2 10 are arranged alternately, and the shape of the crushing teeth is trapezoidal, with the tip facing outward.

[0026] Crushing motors 31 are installed at positions of the machine body 1 corresponding to the fixed crushing wheel 1 12 and the fixed crushing wheel 2 10 , and the output ends of the two crushing motors 31 are connected to the fixed crushing wheel 1 12 and the fixed crushing wheel 2 10 respectively.

[0027] like Figure 1 As shown, the body 1 is an integrally closed structure, and the material is high-strength steel to ensure that it can withstand greater impact and wear during the crushing process. The interior of the body 1 is provided with a crushing chamber 1 3 and a crushing chamber 2 6 from top to bottom, and the two are connected through a drop channel 5. The design of the drop channel 5 ensures that the material can smoothly enter the crushing chamber 2 6 for secondary crushing after being crushed in the crushing chamber 1 3.

[0028] The first crushing chamber 3 is located at the upper part of the machine body 1. Inside it, a movable first crushing wheel 4 and a fixed first crushing wheel 12 are arranged in parallel. The crushing teeth of the movable first crushing wheel 4 and the fixed first crushing wheel 12 are trapezoidal in shape, with the tips facing outwards, and are arranged in an interlaced manner to enhance the crushing effect.

[0029] The second crushing chamber 6 is located at the lower part of the machine body 1. Inside it, a movable second crushing wheel 7 and a fixed second crushing wheel 10 are arranged in parallel. The crushing teeth of the movable second crushing wheel 7 and the fixed second crushing wheel 10 are also trapezoidal in shape, with the tips facing outwards, and are arranged in an interlaced manner.

[0030] The crushing teeth of the movable first crushing wheel 4 and the fixed first crushing wheel 12 are larger in size and are designed to perform primary crushing on large pieces of materials. Specifically, the height of the crushing teeth is 50 mm, the width is 30 mm, and the trapezoidal angle is 45 degrees. In contrast, the crushing teeth of the movable second crushing wheel 7 and the fixed second crushing wheel 10 are smaller in size and are used for fine crushing of the preliminarily crushed materials. The height of its crushing teeth is 30 mm, the width is 20 mm, and the trapezoidal angle is 45 degrees.

[0031] Crushing motors 31 are respectively installed at the positions of the machine body 1 corresponding to the fixed first crushing wheel 12 and the fixed second crushing wheel 10. The crushing motors 31 are high-power and high-speed motors to ensure that the crushing wheels can operate efficiently. The output end of each crushing motor 31 is connected to the corresponding fixed crushing wheel through a transmission shaft. The specific connection method is key connection to ensure the stability and reliability of power transmission.

[0032] The rotating shafts at both ends of the movable first crushing wheel 4 and the movable second crushing wheel 7 respectively extend to both sides of the machine body 1 and are installed with movable plates 27. At the positions of the side walls of the machine body 1 corresponding to the movable plates 27, threaded rods 29 are installed through support blocks 23. One end of the threaded rod 29 is connected to the movable plate 27 through a bearing, and the other end of the threaded rod 29 penetrates through the support block 23 and is installed with a handwheel 24.

[0033] At the positions of the machine body 1 corresponding to the rotating shafts at both ends of the movable first crushing wheel 4 and the movable second crushing wheel 7, adjusting grooves 22 are horizontally arranged, and sliding grooves 25 are arranged on the machine body 1 on both sides of the adjusting grooves 22.

[0034] Both ends of the movable plate 27 are provided with sliders 28 extending to the inside of the sliding grooves 25, and a locking bolt 26 is installed on the movable plate 27.

[0035] The movable plates 27 are installed on both sides of the machine body 1 and are connected to the rotating shafts of the movable first crushing wheel 4 and the movable second crushing wheel 7.

[0036] Both ends of the movable plate 27 are respectively provided with sliders 28, and the sliders 28 extend to the inside of the sliding grooves 25 on the side walls of the machine body 1.

[0037] At the position of the side wall of the machine body 1 corresponding to the movable plate 27, a threaded rod 29 is installed through a support block 23.

[0038] One end of the threaded rod 29 is connected to the movable plate 27 through a bearing, ensuring that the movable plate 27 can move smoothly under the action of the threaded rod 29.

[0039] The other end of the threaded rod 29 penetrates through the support block 23 and is equipped with a handwheel 24. By rotating the handwheel 24, the length of the threaded rod 29 can be adjusted, thereby driving the movable plate 27 to move.

[0040] Adjustment grooves 22 are provided on both side walls of the machine body 1 and correspond to the positions of the rotating shafts of the movable crushing wheel 1 and the movable crushing wheel 2.

[0041] Chute grooves 25 are provided on the machine body 1 on both sides of the adjustment groove 22 for accommodating the sliding blocks 28 to ensure the stability of the movable plate 27 during movement.

[0042] A locking bolt 26 is installed on the movable plate 27 to fix the position of the movable plate 27 after adjustment, ensuring the stable operation of the crushing wheel.

[0043] The first conveyor belt 14 and the second conveyor belt 17 are arranged side by side vertically on one side of the machine body 1, and the output ends of the first conveyor belt 14 and the second conveyor belt 17 respectively extend to the positions above the first crushing chamber 3 and the second crushing chamber 6 through the first feeding chamber 2 and the second feeding chamber 11. A vibration motor 13 is installed on one side of the first conveyor belt 14, and the first conveyor belt 14 is evenly provided with screening holes 30. A blanking hopper 15 is provided at the bottom of the first conveyor belt 14, and the output end of the blanking hopper 15 extends to the position above the second conveyor belt 17.

[0044] The first conveyor belt 14 is located above one side of the machine body 1 and is mainly composed of a driving roller, a supporting roller, a conveyor belt body and a driving device. The conveyor belt body is made of wear-resistant rubber material, and screening holes 30 are evenly arranged on the surface. The diameter of the screening holes 30 is 5 mm, and the spacing is 10 mm, which is used for the preliminary screening of materials.

[0045] A vibration motor 13 is installed on one side of the first conveyor belt 14. The vibration motor 13 is fixed on the machine body 1 through bolts, and the motor shaft is in contact with the side surface of the first conveyor belt 14. By the operation of the vibration motor 13, the first conveyor belt 14 generates vibration, thereby improving the screening effect of the materials.

[0046] A blanking hopper 15 is provided at the bottom of the first conveyor belt 14. The blanking hopper 15 is made of stainless steel material and is in a funnel shape. Its output end extends to the position above the second conveyor belt 17. The inclination angle of the blanking hopper 15 is 45 degrees to ensure that the materials can smoothly fall into the second conveyor belt 17.

[0047] The conveyor belt two 17 is located below the conveyor belt one 14, and its structure is similar to that of the conveyor belt one 14, but it is not provided with screening holes. The main function of the conveyor belt two 17 is to convey the screened materials to the next process.

[0048] The output ends of the conveyor belt one 14 and the conveyor belt two 17 respectively extend to the positions above the crushing chamber one 3 and the crushing chamber two 6 through the feeding chamber one 2 and the feeding chamber two 11. The feeding chamber one 2 and the feeding chamber two 11 are both made of stainless steel, are cylindrical, and have smooth inner walls to reduce the resistance of the materials during transportation.

[0049] The crushing chamber one 3 and the crushing chamber two 6 are respectively located below the feeding chamber one 2 and the feeding chamber two 11, and are internally equipped with high-speed rotating crushing blades for crushing the materials. The materials of the crushing chamber one 3 and the crushing chamber two 6 are high-strength alloy steel, which has good wear resistance and impact resistance.

[0050] The bottom of the machine body 1 is fixedly supported by the base 9 and the uniformly arranged first columns 8. One end of the top of the base 9 is also provided with a second column 20, and the top of the second column 20 is connected to the conveyor belt two 17.

[0051] A servo motor 19 is installed on one side of the second column 20. The driving wheel of the servo motor 19 is connected to the driving wheel of the conveyor belt two 17 through a first belt 18, and the driving wheel of the conveyor belt two 17 is connected to the driving wheel of the conveyor belt one 14 through a second belt 16.

[0052] Outer covers 21 are provided on the outer sides of the first belt 18 and the second belt 16.

[0053] The base 9 is made of high-strength steel and has good stability and load-bearing capacity. The first columns 8 are evenly distributed around the base 9 to ensure the overall stability of the machine body 1.

[0054] One end of the top of the base 9 is also provided with a second column 20. The second column 20 is made of the same material as the first column 8, but its height and diameter are slightly larger than those of the first column 8 to bear a greater load. The top of the second column 20 is connected to the conveyor belt two 17, and the specific connection method is fixed by bolts to ensure a firm and reliable connection.

[0055] A servo motor 19 is installed on one side of the second column 20. The servo motor 19 is selected with a high-precision and high-torque model, which can provide stable power output. The driving wheel of the servo motor 19 is connected to the driving wheel of the conveyor belt two 17 through a first belt 18. The first belt 18 is made of high-strength nylon material and has good transmission efficiency and durability.

[0056] In addition, the driving wheel of the second conveyor belt 17 is also connected to the driving wheel of the first conveyor belt 14 through the second belt 16. The structure and material of the first conveyor belt 14 are the same as those of the second conveyor belt 17, but its length and width are slightly smaller than those of the second conveyor belt 17, which is suitable for conveying materials of different sizes. The second belt 16 is also made of high-strength nylon material to ensure stable transmission.

[0057] To improve safety and protection performance, outer guards 21 are provided on the outer sides of the first belt 18 and the second belt 16. The outer guards 21 are fixed to the relevant parts of the machine body 1 by bolts, which is convenient for installation and disassembly.

[0058] The design of the outer guard 21 can not only prevent operators from accidentally touching the belt, but also effectively prevent dust and debris from entering the transmission system, thus extending the service life of the belt and the driving wheel.

[0059] When the embodiment of the present application is in use, when adjusting the positions of the movable crushing wheel 1 and the movable crushing wheel 2 before crushing, the operator first loosens the locking bolt 26, rotates the handwheel 24 to drive the telescopic movement of the threaded rod 29, and then pushes the movable plate 27 to move in the chute 25. The movement of the movable plate 27 drives the shaft positions of the movable crushing wheel 1 and the movable crushing wheel 2 to change, so as to realize the adjustment of the distance between the crushing wheels. After the adjustment is completed, the position is fixed by using the locking bolt 26. Then, the servo motor 19 is started. The servo motor 19 drives the second conveyor belt 17 and the first conveyor belt 14 to rotate synchronously through the first belt 18 and the second belt 16. When the material is poured onto the first conveyor belt 14, the vibration motor 13 is started. The small-particle waste enters the hopper 15 through the screening holes 30 and falls onto the second conveyor belt 17. The second conveyor belt 17 and the first conveyor belt 14 send the waste of different particle sizes into the machine body 1. The material on the first conveyor belt 14 enters the first crushing chamber 3 through the first feeding chamber 2. Then, the movable crushing wheel 1 and the fixed crushing wheel 12 rotate at high speed under the drive of the crushing motor 31. The material is crushed under the shearing and impact of the trapezoidal crushing teeth. The preliminarily crushed material enters the second crushing chamber 6 through the material falling channel 5 and continues to be finely processed under the action of the movable crushing wheel 2 and the fixed crushing wheel 2. At the same time, after the material on the second conveyor belt 17 enters the second crushing chamber 6 through the second feeding chamber 11, the movable crushing wheel 2 and the fixed crushing wheel 2 rotate at high speed under the drive of the crushing motor 31, and the material is crushed under the shearing and impact of the trapezoidal crushing teeth.

Claims

1. A crushing device for the recycling of highway and construction waste materials, comprising a machine body (1), a first conveyor belt (14) and a second conveyor belt (17), characterized in that: Inside the body (1), a first crushing chamber (3) and a second crushing chamber (6) are respectively arranged from top to bottom and are connected by a blanking channel (5). Inside the first crushing chamber (3), a movable crushing wheel one (4) and a fixed crushing wheel one (12) are arranged in parallel. Inside the second crushing chamber (6), a movable crushing wheel two (7) and a fixed crushing wheel two (10) are arranged in parallel. The rotating shafts at both ends of the movable crushing wheel one (4) and the movable crushing wheel two (7) respectively extend to both sides of the body (1) and are equipped with movable plates (27). At the position of the side wall of the body (1) corresponding to the movable plate (27), a threaded rod (29) is installed through a support block (23). One end of the threaded rod (29) is connected to the movable plate (27) through a bearing, and the other end of the threaded rod (29) penetrates through the support block (23) and is equipped with a handwheel (24). The first conveyor belt (14) and the second conveyor belt (17) are arranged in parallel up and down on one side of the body (1). The output ends of the first conveyor belt (14) and the second conveyor belt (17) respectively extend to the upper positions of the first crushing chamber (3) and the second crushing chamber (6) through a first feeding chamber (2) and a second feeding chamber (11). A vibration motor (13) is installed on one side of the first conveyor belt (14), and the first conveyor belt (14) is evenly provided with screening holes (30). A blanking hopper (15) is arranged at the bottom of the first conveyor belt (14), and the output end of the blanking hopper (15) extends to the upper position of the second conveyor belt (17).

2. A crushing device for the recycling of waste materials from roads and buildings according to claim 1, characterized in that: The bottom of the body (1) is fixedly supported by a base (9) and evenly arranged first columns (8). One end of the top of the base (9) is also provided with a second column (20), and the top of the second column (20) is connected to the second conveyor belt (17).

3. A crushing device for recycling waste materials from roads and buildings according to claim 2, characterized in that: A servo motor (19) is installed on one side of the second column (20). The driving wheel of the servo motor (19) is connected to the driving wheel of the second conveyor belt (17) through a first belt (18), and the driving wheel of the second conveyor belt (17) is connected to the driving wheel of the first conveyor belt (14) through a second belt (16).

4. A crushing device for the recycling of waste materials from roads and buildings according to claim 3, characterized in that: Outer covers (21) are arranged on the outer sides of the first belt (18) and the second belt (16).

5. A crushing device for recycling waste materials from roads and buildings according to claim 1, characterized in that: Adjustment grooves (22) are horizontally arranged at the positions of the body (1) corresponding to the rotating shafts at both ends of the movable crushing wheel one (4) and the movable crushing wheel two (7). Chute grooves (25) are arranged on the body (1) on both sides of the adjustment grooves (22).

6. A crushing device for the recycling of waste materials from roads and buildings according to claim 1, characterized in that: Sliders (28) extending to the inner sides of the chute grooves (25) are arranged at both ends of the movable plate (27), and a locking bolt (26) is installed on the movable plate (27).

7. A crushing device for recycling waste materials from roads and buildings according to claim 1, characterized in that: The crushing teeth of the movable crushing wheel one (4) and the fixed crushing wheel one (12) are larger than those of the movable crushing wheel two (7) and the fixed crushing wheel two (10). The crushing teeth of the movable crushing wheel one (4) and the fixed crushing wheel one (12), and the movable crushing wheel two (7) and the fixed crushing wheel two (10) are arranged in an interlaced manner. The shapes of the crushing teeth are all trapezoidal, with the tips facing outwards.

8. A crushing device for recycling waste materials from roads and buildings according to claim 1, characterized in that: A crushing motor (31) is installed at the positions corresponding to the fixed crushing wheel one (12) and the fixed crushing wheel two (10) of the machine body (1), and the output ends of the two crushing motors (31) are respectively connected to the fixed crushing wheel one (12) and the fixed crushing wheel two (10).

9. A crushing process for the recycling and reuse of highway and construction waste materials, characterized in that: Specifically, it includes the following steps: Step 1, when adjusting the positions of the movable crushing wheel one (4) and the movable crushing wheel two (7) before crushing, the operator first loosens the locking bolt (26), rotates the hand wheel (24), drives the telescopic movement of the threaded rod (29), and then pushes the movable plate (27) to move in the chute (25). The movement of the movable plate 27 drives the shaft positions of the movable crushing wheel one (4) and the movable crushing wheel two (7) to change, so as to realize the adjustment of the crushing wheel spacing. After the adjustment is completed, the position is fixed by using the locking bolt (26). Step 2, start the servo motor (19). The servo motor (19) drives the conveyor belt two (17) and the conveyor belt one (14) to rotate synchronously through the belt one (18) and the belt two (16). When the material is poured into the conveyor belt one (14), the vibration motor (13) starts. The small-particle waste enters the hopper (15) through the screening holes (30) and falls onto the conveyor belt two (17). The conveyor belt two (17) and the conveyor belt one (14) send the waste of different particle sizes into the machine body (1). After the material on the conveyor belt one (14) enters the crushing chamber one (3) through the feeding chamber one (2), the movable crushing wheel one (4) and the fixed crushing wheel one (12) rotate at high speed under the drive of the crushing motor (31), and the material is crushed under the shearing and impact of the trapezoidal crushing teeth. Step 3, the preliminarily crushed material enters the crushing chamber two (6) through the falling channel (5) and continues to be finely processed under the action of the movable crushing wheel two (7) and the fixed crushing wheel two (10). At the same time, after the material on the conveyor belt two (17) enters the crushing chamber two (6) through the feeding chamber two (11), the movable crushing wheel two (7) and the fixed crushing wheel two (10) rotate at high speed under the drive of the crushing motor (31), and the material is crushed under the shearing and impact of the trapezoidal crushing teeth.

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