A crushing device with screening function for asphalt production and processing

Abstract

The present invention discloses a crushing device for asphalt production and processing with a screening function, which relates to the technical field of asphalt crushing devices. It includes a bracket, a housing, a crushing roller, a discharge port, a cold brittle component, a drive component, and a detection cleaning plate. The present invention uses the cleaning claws on the cleaning head to convert the convex state of the roller body into its own deflection. The cleaning head further converts the deflection into the displacement of the transmission device through the transmission teeth. The displacement of the transmission device drives the flow medium to compress, thereby causing pressure on the transmission plug. The transmission plug transmits the pressure to the piezoelectric body. The piezoelectric body generates an electrical signal after being compressed, achieving the purpose of detecting the cleanliness of the roller body. The fixing device drives the tooth column to rise, and the tooth column drives the cleaning head to reverse deflection and reset. Under the action of the fixing device, the cleaning head is fixed. After being fixed, the cleaning head uses the cleaning claws on it to scrape the raw materials on the roller body, realizing the state conversion of the cleaning claw activity detection and fixed cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt crushing devices, in particular to a crushing device for asphalt production and processing with a screening function. Background Art

[0002] Old asphalt pavement contains high-quality, reusable aggregates and some aged asphalt that still retains its adhesive properties, which can be used as raw asphalt. Crusher plays a key role in the reuse of waste asphalt pavement materials. Crusher not only breaks down large asphalt mixtures into granular materials suitable for recycling, improving processing efficiency and mixing uniformity, but also achieves a certain degree of separation between asphalt and aggregate, optimizing the quality of the recycled mixture. Crushing allows the aggregate resources in the old asphalt to be reused, significantly reducing reliance on raw materials such as natural sand and gravel, saving construction costs, and reducing construction waste emissions.

[0003] When using a crushing device to crush, due to the different strengths of asphalt materials used in different grades of road surfaces, some road surfaces are soft in texture. Moreover, when working at high temperatures, these asphalt raw materials with poor texture are easily adhered to the surface of the crushing roller under the squeezing action of the crushing roller, resulting in reduced production efficiency and different sizes of crushed particles. If tools are used directly to scrape off the attachments, part of the asphalt will remain and wrap around the roller surface, accumulating for a long time, which will have an adverse effect on both production and the device itself. In addition, the cost of manual cleaning is also high, which is extremely detrimental to continuous production. Summary of the Invention

[0004] The purpose of the present invention is to provide a crushing device for asphalt production and processing with a screening function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crushing device for asphalt production and processing with a screening function, comprising a bracket, a casing installed on the bracket, a drive assembly installed on the bracket, a discharge port provided at the bottom of the casing, two crushing rollers rotatably installed on the casing, one end of the crushing roller is rotatably connected to a cold brittle assembly, the cold brittle assembly is connected to the casing, a rotating shaft is installed at the other end of the crushing roller, the rotating shaft passes through the casing and is connected to the drive assembly, detection and cleaning plates are symmetrically installed on the casing, the detection and cleaning plates are located on both sides of the crushing roller, and a screen is provided below the discharge port.

[0006] The crushing device is connected to a control cabinet, which contains a control system for controlling the entire crushing device. The crushed asphalt raw materials fall from the discharge port to the screen below, and insufficiently crushed raw materials cannot fall. The staff regularly cleans the large-particle fragments screened out to ensure that the screen is unobstructed. The rotating shaft is concentric with the crushing roller.

[0007] Furthermore, the detection cleaning plate includes a wall shell, which is installed on the casing, a rotating rod is installed in the casing, and several cleaning heads are rotatably installed on the rotating rod. A bottom tube is provided in the casing, a transmission is installed on the bottom tube, an extrusion chamber is provided in the bottom tube, a signal converter is installed in the extrusion chamber, a fixer is installed on the bottom tube, and the transmission engages with the cleaning head for transmission.

[0008] Furthermore, the transmission includes a conversion shell, which is installed on the bottom tube. A sliding chamber is provided in the conversion shell. The sliding chamber and the extrusion chamber are connected. The sliding chamber and the extrusion chamber are both filled with flowing medium. A piston rod is slidably installed in the sliding chamber. A gear column is installed on the piston rod. A telescopic spring is installed between the gear column and the conversion shell. The gear column engages with the cleaning head for transmission.

[0009] When the asphalt raw material is hard and the ambient temperature is low, the raw material is directly broken down by the squeezing and crushing action of the crushing roller and is not easy to adhere to the roller body. When the roller body rotates and passes through the cleaning claws, it will not cause the cleaning claws to deflect;

[0010] When the asphalt raw material is soft or the ambient temperature is high, the raw material is soft and easily adheres to the roller body during crushing and extrusion, causing the roller body to bulge. When the roller body with the asphalt raw material attached rotates to the cleaning claw position, the bulge drives the cleaning claw to deflect, and the cleaning claw drives the cleaning head to deflect upward. The cleaning head drives the gear column downward through the transmission gear. The gear column drives the piston rod to squeeze the telescopic spring and slide downward along the conversion shell. The piston rod squeezes the fluid in the sliding chamber into the extrusion chamber, increasing the pressure in the extrusion chamber. The transmission plug is compressed and squeezes the conversion spring. The conversion spring transmits the pressure to the piezoelectric element through the force transmission head. The piezoelectric element generates an electrical signal when it is compressed.

[0011] Furthermore, the signal converter includes a transmission plug, a force transmission head and a piezoelectric body. The transmission plug is slidably installed in the extrusion chamber, the force transmission head is slidably installed in the extrusion chamber, the piezoelectric body is installed at one end of the extrusion chamber, a conversion spring is installed between the transmission plug and the force transmission head, and the piezoelectric body is tightly attached to the force transmission head.

[0012] The more raw materials attached to the roller body, the more cleaning heads are driven to deflect, the higher the protrusion, the larger the deflection angle of the cleaning head, and the more flow medium is squeezed into the extrusion chamber. The greater the pressure change in the extrusion chamber, the larger the displacement of the transmission plug, and the stronger the electrical signal generated by the piezoelectric body. The control system compares the received electrical signal with the preset value. When the electrical signal exceeds the preset value, the cold brittle component is turned on.

[0013] Furthermore, the cleaning head is provided with transmission teeth, and the cleaning head is driven by meshing the transmission teeth with the tooth column, and the cleaning head is provided with cleaning claws.

[0014] Furthermore, the fixer includes an electric telescopic rod, which is installed on the bottom tube. A fixing plate is installed on the output shaft of the electric telescopic rod. The fixing plate is provided with a hole. The diameter of the hole is smaller than the diameter of the gear column and larger than the diameter of the telescopic spring.

[0015] The control system adjusts the cold brittle time according to the strength of the electrical signal. After the cold brittle is over, the electric telescopic rod is turned on, and the output shaft of the electric telescopic rod drives the fixed plate to rise. Since the diameter of the hole on the fixed plate is larger than the diameter of the telescopic spring, the fixed plate can pass through the telescopic spring and move upward. Since the diameter of the hole is smaller than the diameter of the tooth column, the fixed plate cannot pass through the tooth column, thereby driving the tooth column upward, and the tooth column drives the cleaning head to reverse deflect and reset. Synchronously, the tooth column drives the piston rod upward until the piston rod slides to the top of the sliding chamber and stops after it cannot continue to move upward. At this time, the tooth column cannot move up and down, and the cleaning head cannot deflect, thereby achieving the fixation of the cleaning head. The fixed cleaning head uses the cleaning claws on it to scrape the raw materials on the roller body. The asphalt raw materials after cold brittleness become hard and brittle, and their adhesion is weakened, making it easier to be scraped off as a whole and not easy to adhere to and remain on the roller body.

[0016] Furthermore, the crushing roller includes a roller body, which is rotatably connected to the cold brittle component. A rotating shaft is installed at one end of the roller body, which is rotatably connected to the casing and connected to the driving component. A plurality of roller teeth are provided on the roller body.

[0017] The cleaning head is located between two roller teeth, and the roller teeth on the two crushing rollers are staggered with each other.

[0018] Furthermore, the cold brittle component includes a fixed end head, which is installed on the casing, and a cold brittle cylinder is installed on the fixed end head. The roller body is rotatably connected to the cold brittle cylinder. Several U-shaped channels are provided in the cold brittle cylinder, and the cold brittle cylinder is connected to the fixed end head through the U-shaped channels.

[0019] Furthermore, a liquid inlet is provided at one end of the U-shaped channel, a liquid outlet is provided at the other end of the U-shaped channel, a collecting chamber is provided in the fixed end head, a diversion chamber is provided in the fixed end head, the liquid inlet is connected to the diversion chamber, the liquid outlet is connected to the collecting chamber, an input port is provided on one side of the diversion chamber, and an output port is provided at one end of the collecting chamber, and both the input port and the output port are connected to a circulating liquid supply device through a pipeline.

[0020] The circulating liquid supply device is used to input low-temperature cooling water to the input port and cool down the high-temperature water received at the output port.

[0021] The control system starts the circulating liquid supply device, and the rotating liquid supply device inputs cooling water to the input port. After the cooling water enters the diversion cavity, it is diverted by several liquid inlets and flows along the U-shaped channel. The cooling water first flows to the bottom of the U-shaped channel, and then turns and flows out to the liquid outlet. During this period, the inner wall of the roller body is cooled by heat exchange. After the roller body is cooled, the asphalt raw materials attached to it are cooled accordingly. After cooling, the asphalt raw materials begin to become brittle and hard. The cooling water that absorbs heat enters the collecting cavity from the liquid outlet and then flows back to the fantasy liquid supply device from the output port for cooling. This cycle completes the cold brittle treatment of the asphalt raw materials.

[0022] Furthermore, the drive assembly includes a drive motor, a second transmission wheel and a gear. The drive motor is installed on the bracket, the first transmission wheel is installed on the output shaft of the drive motor, the second transmission wheel is installed on the rotating shaft, the gear is installed on the rotating shaft, the gears are meshed with each other for transmission, and a belt is installed between the first transmission wheel and the second transmission wheel.

[0023] During operation, the control system turns on the drive motor, and the output shaft of the drive motor drives the first transmission wheel to rotate. The first transmission wheel drives the second transmission wheel to rotate through the belt, and the second transmission wheel drives the crushing roller and gear to rotate through the rotating shaft. The two gears drive each other, causing the two crushing rollers to rotate in opposite directions to crush the asphalt raw materials.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The cleaning claws on the cleaning head convert the raised state of the roller body into its own deflection. The cleaning head further converts the deflection into the displacement of the actuator through the transmission teeth. The displacement of the actuator drives the compression of the flowing medium, thereby causing pressure on the transmission plug. The transmission plug transmits the pressure to the piezoelectric body. The piezoelectric body generates an electrical signal after being pressurized, thereby achieving the purpose of detecting the cleanliness of the roller body.

[0026] 2. The control system turns on the cooling component to cool the roller body according to the strength of the electrical signal, and can adjust the cooling time according to the strength of the electrical signal, so as to achieve the purpose of adaptively adjusting the cooling time according to the cleanliness of the roller body.

[0027] 3. Use the fixing device to drive the tooth column to rise, and the tooth column drives the cleaning head to deflect in the opposite direction and reset. Under the action of the fixing device, the tooth column cannot move up and down, and the cleaning head cannot deflect, thereby achieving the fixation of the cleaning head. After being fixed, the cleaning head uses the cleaning claws on it to scrape the raw materials on the roller body, realizing the state conversion of the cleaning claw activity detection and fixed cleaning.

[0028] 4. The cold brittle component cools down the inner wall of the roller through the internal circulating coolant. When the roller is cooled, the asphalt raw materials attached to it also cool down. After cooling, the asphalt raw materials begin to become brittle and hard, and the adhesion is weakened. It is easier to be scraped off as a whole and is not easy to adhere to the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is an overall three-dimensional diagram of the crushing device of the present invention;

[0030] Figure 2 A perspective view of the crushing roller and the detection cleaning plate of the present invention;

[0031] Figure 3 The present invention detects the three-dimensional cleaning plate Figure 1 ;

[0032] Figure 4 The present invention detects the three-dimensional cleaning plate Figure 2 ;

[0033] Figure 5 The present invention detects the three-dimensional cleaning plate Figure 3 ;

[0034] Figure 6 For the present invention Figure 5 A partial enlarged view of area A in the middle;

[0035] Figure 7 is a perspective view of the cleaning head of the present invention;

[0036] Figure 8 is a perspective view of the actuator of the present invention;

[0037] Figure 9 A perspective view of a cold brittle component of the present invention;

[0038] Figure 10 It is a three-dimensional diagram of the U-shaped channel of the present invention.

[0039] In the figure: 1, bracket; 2, housing; 3, crushing roller; 4, discharge port; 5, cold brittle component; 6, drive component; 7, detection and cleaning plate; 31, roller body; 32, roller teeth; 51, cold brittle cylinder; 52, fixed end; 53, U-shaped channel; 521, diverter cavity; 522, manifold cavity; 523, input port; 524, output port; 531, liquid inlet; 532, liquid outlet; 61, drive motor; 62, first transmission wheel; 63, belt; 64, second transmission wheel; 65, gear; 66 6. Rotating shaft; 71. Wall shell; 72. Bottom tube; 73. Transmitter; 74. Fixer; 75. Cleaning head; 76. Rotating rod; 77. Signal converter; 741. Electric telescopic rod; 742. Fixing plate; 731. Gear column; 732. Piston rod; 733. Sliding chamber; 734. Telescopic spring; 735. Conversion shell; 751. Cleaning claw; 752. Transmission tooth; 771. Transmission plug; 772. Conversion spring; 773. Force transmission head; 774. Piezoelectric body; 721. Extrusion chamber. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] like Figures 1-10 As shown, the present invention provides a technical solution for a crushing device for asphalt production and processing with a screening function: it includes a bracket 1, a casing 2 is installed on the bracket 1, a driving component 6 is installed on the bracket 1, a discharge port 4 is provided at the bottom of the casing 2, two crushing rollers 3 are rotatably installed on the casing 2, one end of the crushing roller 3 is rotatably connected to a cold brittle component 5, the cold brittle component 5 is connected to the casing 2, and a rotating shaft 66 is installed at the other end of the crushing roller 3, the rotating shaft 66 passes through the casing 2 and is connected to the driving component 6, detection and cleaning plates 7 are symmetrically installed on the casing 2, the detection and cleaning plates 7 are located on both sides of the crushing roller 3, and a screen is provided below the discharge port 4.

[0042] The crushing device is connected to a control cabinet, which is equipped with a control system for controlling the entire crushing device. The crushed asphalt raw materials fall from the discharge port 4 to the screen below. Insufficiently crushed raw materials cannot fall. The staff regularly cleans the large-particle fragments screened out to ensure that the screen is unobstructed. The rotating shaft 66 is coaxial with the crushing roller 3.

[0043] The drive assembly 6 includes a drive motor 61, a second transmission wheel 64 and a gear 65. The drive motor 61 is installed on the bracket 1. The first transmission wheel 62 is installed on the output shaft of the drive motor 61. The second transmission wheel 64 is installed on the rotating shaft 66. The gear 65 is installed on the rotating shaft 66. The gears 65 are engaged with each other for transmission. A belt 63 is installed between the first transmission wheel 62 and the second transmission wheel 64.

[0044] The detection cleaning plate 7 includes a wall shell 71, which is installed on the casing 2. A rotating rod 76 is installed in the casing 2, and several cleaning heads 75 are rotatably installed on the rotating rod 76. A bottom tube 72 is provided in the casing 2, and a transmission device 73 is installed on the bottom tube 72. An extrusion chamber 721 is provided in the bottom tube 72, and a signal converter 77 is installed in the extrusion chamber 721. A fixer 74 is installed on the bottom tube 72, and the transmission device 73 engages with the cleaning head 75 for transmission.

[0045] The transmission 73 includes a conversion shell 735, which is installed on the bottom tube 72. A sliding chamber 733 is provided in the conversion shell 735. The sliding chamber 733 is connected to the extrusion chamber 721. The sliding chamber 733 and the extrusion chamber 721 are both filled with flowing medium. A piston rod 732 is slidably installed in the sliding chamber 733. A gear column 731 is installed on the piston rod 732. A telescopic spring 734 is installed between the gear column 731 and the conversion shell 735. The gear column 731 is engaged with the cleaning head 75 for transmission.

[0046] The signal converter 77 includes a transmission plug 771, a force transmission head 773 and a piezoelectric body 774. The transmission plug 771 is slidably installed in the extrusion chamber 721, the force transmission head 773 is slidably installed in the extrusion chamber 721, the piezoelectric body 774 is installed at one end of the extrusion chamber 721, and a conversion spring 772 is installed between the transmission plug 771 and the force transmission head 773. The piezoelectric body 774 is in close contact with the force transmission head 773.

[0047] The cleaning head 75 is provided with a transmission tooth 752 , and the cleaning head 75 is driven by meshing the transmission tooth 752 with the tooth column 731 . The cleaning head 75 is provided with a cleaning claw 751 .

[0048] The fixer 74 includes an electric telescopic rod 741, which is installed on the bottom tube 72. A fixing plate 742 is installed on the output shaft of the electric telescopic rod 741. The fixing plate 742 is provided with a hole. The diameter of the hole is smaller than the diameter of the tooth column 731 and larger than the diameter of the telescopic spring 734.

[0049] Crushing roller 3 includes a roller body 31, which is rotatably connected to the cold brittle assembly 5. A rotating shaft 66 is mounted on one end of roller body 31. Rotating shaft 66 is rotatably connected to housing 2, and rotating shaft 66 is connected to drive assembly 6. Roller body 31 is provided with a plurality of roller teeth 32. A cleaning head 75 is positioned between two roller teeth 32. The roller teeth 32 on the two crushing rollers 3 are interlaced.

[0050] The cold brittle component 5 includes a fixed end 52, which is installed on the casing 2. A cold brittle cylinder 51 is installed on the fixed end 52. The roller body 31 is rotatably connected to the cold brittle cylinder 51. Several U-shaped channels 53 are provided in the cold brittle cylinder 51. The cold brittle cylinder 51 is connected to the fixed end 52 through the U-shaped channels 53.

[0051] A liquid inlet 531 is provided at one end of the U-shaped channel 53, and a liquid outlet 532 is provided at the other end. A manifold 522 is provided within the fixed end 52, and a diversion chamber 521 is provided within the fixed end 52. The liquid inlet 531 communicates with the diversion chamber 521, and the liquid outlet 532 communicates with the manifold 522. An input port 523 is provided on one side of the diversion chamber 521, and an output port 524 is provided at one end of the manifold 522. Both the input port 523 and the output port 524 are connected to a circulating liquid supply device via pipes. The circulating liquid supply device is used to input low-temperature cooling water into the input port 523 and cool the high-temperature water received at the output port 524.

[0052] The working principle of the present invention is as follows: during operation, the control system turns on the drive motor 61, the output shaft of the drive motor 61 drives the first transmission wheel 62 to rotate, the first transmission wheel 62 drives the second transmission wheel 64 to rotate through the belt 63, and the second transmission wheel 64 drives the crushing roller 3 and the gear 65 to rotate through the rotating shaft 66. The two gears 65 transmit power to each other, causing the two crushing rollers 3 to rotate in opposite directions to crush the asphalt raw material.

[0053] When the asphalt raw material is hard and the ambient temperature is low, the raw material is directly broken down by the squeezing and crushing action of the crushing roller 3 and is not easily adhered to the roller body 31. When the roller body 31 rotates past the cleaning claws 751, it will not cause the cleaning claws 751 to deflect.

[0054] When the asphalt raw material is soft or the ambient temperature is high, the asphalt raw material is soft and easily adheres to the roller body 31 during crushing and extrusion, causing the roller body 31 to bulge. When the roller body 31 with the asphalt raw material attached rotates to the position of the cleaning claw 751, the bulge drives the cleaning claw 751 to deflect, and the cleaning claw 751 drives the cleaning head 75 to deflect upward. The cleaning head 75 drives the tooth column 731 downward through the transmission tooth 752. The tooth column 731 drives the piston rod 732 to squeeze the telescopic spring 734 and slide downward along the conversion shell 735. The piston rod 732 squeezes the fluid medium in the sliding chamber 733 into the extrusion chamber 721, increasing the pressure in the extrusion chamber 721. The transmission plug 771 is compressed and squeezes the conversion spring 772. The conversion spring 772 transmits the pressure to the piezoelectric element 774 through the force transmission head 773. The piezoelectric element 774 generates an electrical signal when compressed.

[0055] The more raw materials attached to the roller body 31, the more cleaning heads 75 are driven to deflect, the higher the protrusion, the larger the deflection angle of the cleaning head 75, and the more flow medium is squeezed into the extrusion chamber 721. The greater the pressure change in the extrusion chamber 721, the larger the displacement of the transmission plug 771, and the stronger the electrical signal generated by the piezoelectric body 774. The control system compares the received electrical signal with the preset value. When the electrical signal exceeds the preset value, the cold brittle component 5 is turned on.

[0056] The control system starts the circulating liquid supply device, and the rotating liquid supply device inputs cooling water to the input port 523. After the cooling water enters the diversion chamber 521, it is diverted by several liquid inlets 531 and flows along the U-shaped channel 53. The cooling water first flows to the bottom of the U-shaped channel 53, and then turns and flows out to the liquid outlet 532. During this period, the inner wall of the roller body 31 is cooled by heat exchange. After the roller body 31 is cooled, the asphalt raw material attached thereto is also cooled. After cooling, the asphalt raw material begins to become brittle and hard. The cooling water that absorbs heat enters the collecting chamber 522 from the liquid outlet 532 and converges. After that, it flows back to the fantasy liquid supply device from the output port 524 to cool down. This cycle completes the cold brittle treatment of the asphalt raw material.

[0057] After the trolley case 730 is in the open position, the tooth column 731 is rotated to move upward, and the tooth column 731 is rotated to move upward, thereby preventing the tooth column 731 from sliding upward.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A crushing device for asphalt production and processing with a screening function, characterized by: The crushing device comprises a bracket (1), a housing (2) is mounted on the bracket (1), a driving assembly (6) is mounted on the bracket (1), a discharge port (4) is provided at the bottom of the housing (2), two crushing rollers (3) are rotatably mounted on the housing (2), one end of the crushing roller (3) is rotatably connected to a cold brittle assembly (5), the cold brittle assembly (5) is connected to the housing (2), a rotating shaft (66) is mounted on the other end of the crushing roller (3), the rotating shaft (66) passes through the housing (2) and is connected to the driving assembly (6), detection and cleaning plates (7) are symmetrically mounted on the housing (2), the detection and cleaning plates (7) are located on both sides of the crushing roller (3), and a screen is provided below the discharge port (4); The detection cleaning plate (7) comprises a wall shell (71), the wall shell (71) is mounted on the housing (2), a rotating rod (76) is mounted in the housing (2), a plurality of cleaning heads (75) are rotatably mounted on the rotating rod (76), a bottom tube (72) is provided in the housing (2), a transmission device (73) is mounted on the bottom tube (72), an extrusion chamber (721) is provided in the bottom tube (72), a signal converter (77) is mounted in the extrusion chamber (721), a fixing device (74) is mounted on the bottom tube (72), and the transmission device (73) is engaged with the cleaning heads (75) for transmission; The transmission device (73) includes a conversion shell (735), the conversion shell (735) is installed on the bottom tube (72), a sliding chamber (733) is provided in the conversion shell (735), the sliding chamber (733) is communicated with the extrusion chamber (721), the sliding chamber (733) and the extrusion chamber (721) are both filled with a fluid medium, a piston rod (732) is slidably installed in the sliding chamber (733), a tooth column (731) is installed on the piston rod (732), a telescopic spring (734) is installed between the tooth column (731) and the conversion shell (735), and the tooth column (731) is meshed with the cleaning head (75) for transmission; The fixer (74) includes an electric telescopic rod (741), the electric telescopic rod (741) is mounted on the bottom tube (72), a fixing plate (742) is mounted on the output shaft of the electric telescopic rod (741), and a hole is provided on the fixing plate (742), the diameter of the hole is smaller than the diameter of the tooth column (731), and the diameter of the hole is larger than the diameter of the telescopic spring (734).

2. The crushing device for asphalt production and processing with screening function according to claim 1, characterized in that: The signal converter (77) includes a transmission plug (771), a force transmission head (773) and a piezoelectric body (774), wherein the transmission plug (771) is slidably mounted in the extrusion chamber (721), the force transmission head (773) is slidably mounted in the extrusion chamber (721), the piezoelectric body (774) is mounted at one end of the extrusion chamber (721), a conversion spring (772) is mounted between the transmission plug (771) and the force transmission head (773), and the piezoelectric body (774) is in close contact with the force transmission head (773).

3. The crushing device for asphalt production and processing with screening function according to claim 2, characterized in that: The cleaning head (75) is provided with a transmission tooth (752), and the cleaning head (75) is driven by meshing with the tooth column (731) through the transmission tooth (752). The cleaning head (75) is provided with a cleaning claw (751).

4. The crushing device for asphalt production and processing with screening function according to claim 3, characterized in that: The crushing roller (3) includes a roller body (31), the roller body (31) is rotatably connected to the cold brittle component (5), a rotating shaft (66) is installed at one end of the roller body (31), the rotating shaft (66) is rotatably connected to the housing (2), the rotating shaft (66) is connected to the driving component (6), and a plurality of roller teeth (32) are provided on the roller body (31).

5. The crushing device for asphalt production and processing with screening function according to claim 4, characterized in that: The cold brittle component (5) includes a fixed end (52), the fixed end (52) is installed on the housing (2), a cold brittle cylinder (51) is installed on the fixed end (52), the roller body (31) is rotatably connected to the cold brittle cylinder (51), a plurality of U-shaped channels (53) are provided in the cold brittle cylinder (51), and the cold brittle cylinder (51) is connected to the fixed end (52) through the U-shaped channels (53).

6. The crushing device for asphalt production and processing with screening function according to claim 5, characterized in that: A liquid inlet (531) is provided at one end of the U-shaped channel (53), and a liquid outlet (532) is provided at the other end of the U-shaped channel (53). A manifold (522) is provided in the fixed end head (52), and a diversion chamber (521) is provided in the fixed end head (52). The liquid inlet (531) is in communication with the diversion chamber (521), and the liquid outlet (532) is in communication with the manifold chamber (522). An input port (523) is provided on one side of the diversion chamber (521), and an output port (524) is provided at one end of the manifold chamber (522). Both the input port (523) and the output port (524) are connected to a circulating liquid supply device via a pipeline.

7. The crushing device for asphalt production and processing with screening function according to claim 4, characterized in that: The driving assembly (6) includes a driving motor (61), a second transmission wheel (64) and a gear (65), wherein the driving motor (61) is mounted on the bracket (1), a first transmission wheel (62) is mounted on the output shaft of the driving motor (61), the second transmission wheel (64) is mounted on the rotating shaft (66), and the gear (65) is mounted on the rotating shaft (66), the gears (65) are meshed with each other for transmission, and a belt (63) is mounted between the first transmission wheel (62) and the second transmission wheel (64).

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