Cement pavement on-site crushing full-recycling aggregate machine integrating multiple cooperative crushing modes

Abstract

This invention proposes an in-situ crushing and fully recycled aggregate machine for cement pavement integrating multiple synergistic crushing methods, comprising: a frame and a casing; a rotor, wherein the direction of the rotor's cutting linear velocity V1 is the same as the direction of the frame's moving velocity V2; a baffle unit, which is activated when the pavement strength is greater than a set value Q1, forming a compression and impact crushing space with the rotor, and is located between the frame and the casing, in front of the rotor; the working end of the baffle unit is located inside the casing, and the radial distance between it and the rotor is adjustable; and a screen plate unit, which is activated when the pavement strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the compression and impact crushing space exceeds a set value R1, to receive the crushed stone thrown out by the compression and impact crushing space and separate large-diameter and small-diameter crushed stone through its screen holes, and input the large-diameter crushed stone into a double-roll crusher for secondary crushing, and its inclination angle is adjustable. This invention enables rapid and efficient mechanized in-situ crushing of cement concrete pavement of different strengths, realizing integrated crushing and recycled aggregate production with a single machine while meeting the requirements for good gradation.

Description

Technical Field

[0001] This invention belongs to the field of road regeneration technology, and in particular relates to a cement road surface in-situ crushing and full recycling aggregate machine that integrates multiple synergistic crushing methods. Background Technology

[0002] Since the construction of concrete pavement roads in my country, cement concrete pavement has been increasingly used due to its advantages such as high strength, high rigidity, and good durability. However, under the influence of traffic loads and the natural environment, various defects have appeared, and during major and medium-term repairs, different treatment methods have resulted in a large amount of waste cement concrete being dumped and occupying land resources. At present, there are many methods for the reconstruction and maintenance of old concrete pavement, which can meet certain road performance requirements in a short period of time. However, how to achieve more efficient, economical, and high-value recycling is an urgent problem to be solved. Due to the current road traffic conditions, actual performance, high strength of old concrete, and complex working conditions and environment, existing crushing and recycling technologies cannot meet the needs of social and economic development. This technology can directly serve the reconstruction and maintenance of old cement concrete roads under complex conditions. It makes modern low-carbon road reconstruction and maintenance more economical (stable and durable) and more environmentally friendly (low emissions and low energy consumption). The economic and environmental benefits of this method and equipment are mainly reflected in high efficiency (rapid construction and opening to traffic), high performance (improved pavement structure durability), low emissions (energy saving and emission reduction), and low cost (saving new materials and reducing transportation). It meets the high-performance and low-carbon requirements of green roads.

[0003] The current situation in China is that the focus of "blackening" cement roads is on "white-to-black" conversion. In order to ensure the usability and durability of the "white-to-black" road surface, two methods are generally adopted: (1) excavating and rebuilding the original road surface. This method is expensive and not low-carbon and environmentally friendly, which is contrary to the construction of zero-waste cities and green transportation; (2) crushing the waste cement concrete road surface on-site through certain process technologies and using it as raw material for the new road surface, realizing resource utilization on-site. This method can reduce the mining of new aggregates, save natural resources, reduce environmental pollution, reduce the impact of transportation and centralized processing, and eliminate the environmental damage and farmland occupation caused by the accumulation of waste aggregates. It has become the current development trend of maintenance and reconstruction of abandoned concrete roads.

[0004] However, currently, there are no large-scale, high-efficiency mechanical devices available domestically or internationally for on-site crushing of cement concrete pavements. Existing machinery can only be used in certain situations: firstly, for high-strength concrete, secondary crushing is performed using a concrete pavement recycling machine; secondly, for low-strength rural concrete pavements, direct milling is used, resulting in high equipment wear and low efficiency. These methods are significantly limited because they cannot meet the performance requirements and road application performance of fully recycled base course aggregates, and various indicators cannot meet certain requirements.

[0005] Currently, due to the defects of existing recycling equipment, R&D investment, and different R&D technology routes for waste concrete recycling equipment, the technology of fully integrated recycling equipment adapted to the aggregates of road base structure in my country still needs to be improved.

[0006] To further promote the research on the manufacturing technology of mechanical equipment for the comprehensive utilization of construction waste, and to further optimize the recycling equipment so that the equipment can be flexibly applied to complex and different working conditions, the on-site full recycling process is simple and reasonable and can meet the requirements of certain graded recycled aggregates, while reducing the cost of maintenance and reconstruction of old roads. Summary of the Invention

[0007] The purpose of this invention is to provide a fully recycled aggregate crushing machine for cement pavement that integrates multiple synergistic crushing methods, enabling rapid and efficient mechanized on-site crushing of cement concrete pavements of varying strengths. The technical solution adopted is as follows:

[0008] A cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods, comprising:

[0009] A frame and a housing 2, wherein the housing 2 is connected to the frame;

[0010] The rotor 18 is used for cutting the road surface. It is rotatably mounted in the housing 2. Its shaft is connected to the engine 15 on the frame via belt drive. The direction of the linear velocity V1 of the rotor 18 is the same as the direction of the moving velocity V2 of the frame.

[0011] The baffle unit is activated when the road surface strength is greater than the set value Q1, forming a crushing and impacting space with the rotor 18. It is located between the frame and the cover 2, and in front of the rotor 18. The working end of the baffle unit is located inside the cover, and the distance between it and the rotor 18 is adjustable.

[0012] The screen plate unit is activated when the road surface strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the extrusion crushing space exceeds the set value R1. It receives the crushed stone thrown out by the extrusion crushing space and separates the large-diameter crushed stone from the small-diameter crushed stone through the screen holes on it. The large-diameter crushed stone is then fed into the double roll crusher 1 for secondary crushing. It is located between the frame and the cover 2 and is located behind the baffle unit. The active end of the screen plate unit is located inside the cover 2 and its inclination is adjustable.

[0013] The double roll crusher 1 has its shell fixed to the inner wall of the cover 2, its output end located below its input end, and its input end located below the screen plate unit.

[0014] Preferably, the baffle unit includes:

[0015] The top cover plate 8, baffle one 9, bracket 12 and baffle two 14 are arranged in order from back to front;

[0016] The upper cover plate 8 is used to prevent crushed stone materials in the crushing space from hitting the cover 2. It is located in the space formed by the cover 2, and its rear end is rotatably connected to the cover 2 through a second rotating shaft 7. The second rotating shaft 7 is fixed to the cover 2.

[0017] The first baffle 9 passes through the cover 2, its front end is hinged to the bracket 12, and its rear end is hinged to the output end of the second hydraulic cylinder 10. The cylinder body of the second hydraulic cylinder 10 is hinged to the frame. The first baffle 9 contacts the lower surface of the upper cover 8 to support the upper cover 8. The bracket 12 is fixed to the frame.

[0018] The second baffle 14 is hinged to the bracket 12 at its rear end and to the output end of the third hydraulic cylinder 16 at its front end. The output shaft of the third hydraulic cylinder 16 passes through the cover 2 and its cylinder body is hinged to the frame.

[0019] Preferably, the sieve plate unit includes:

[0020] The movable screen plate 5 is located behind the upper cover plate 8; the movable screen plate 5 is rotatably mounted in the cover 2 via a rotating shaft 4, and its upper end is hinged to the output end of the hydraulic cylinder 16. The cylinder body of the hydraulic cylinder 16 passes through the cover 2 and is hinged to the frame.

[0021] Preferably, the sieve plate unit further includes a vibrating sieve plate 3 that rotates around the rotating shaft 4, and sieve holes are formed thereon;

[0022] The vibrating screen plate 3 is connected to the inner wall of the cover 2 through a support member, and its lower end is located above the double roll crusher 1.

[0023] Preferably, the support is a spring, one end of which is fixed to the lower surface of the vibrating screen plate 3 and the other end is fixed to the inner wall of the cover 2, and the support vibrates up and down.

[0024] Preferably, a baffle plate 22 is fixedly installed on the inner surface of the cover 2, and the baffle plate 22 and the frame are fixedly connected by a connector, which passes through the cover 2; the baffle plate 22 is sleeved on the rotating shaft 7;

[0025] Baffle 5 21 is provided at the rear section of baffle 6 22, and baffle 5 21 is located behind the input end of the double roll crusher 1;

[0026] When the road surface strength is greater than the set value Q1, and the particle size of the crushed stone thrown out by the crushing space exceeds the set value R1, the piston rod of the hydraulic cylinder 16 passes through the baffle 22 and extends toward the rotor 18; the movable screen plate 5 and the vibrating screen plate 3 are both located below the baffle 22.

[0027] Preferably, it further includes an arc-shaped baffle and a baffle seven;

[0028] The seventh baffle is fixed to the inner wall of the cover 2 and is located in front of the first baffle 9;

[0029] The arc-shaped baffle passes through the cover 2, and its front end is fixed to the rear section of the baffle 2 14. Its rear section can move along the upper surface of the baffle 7.

[0030] When the road surface strength is greater than the set value Q1, the movable screen plate 5, baffle 6 22, upper cover plate 8, baffle 1 9, baffle 7, arc baffle and baffle 2 14 will come into contact in sequence.

[0031] The upper end of the movable sieve plate 5 abuts against the lower surface of the baffle plate 22.

[0032] Preferably, it also includes baffle three 19 and baffle four 20;

[0033] The baffle 3 19 is sleeved on the rotating shaft 4 and forms an interference fit. The baffle 3 19 is kept vertical and is located behind the rotor 18.

[0034] The baffle plate 20 is used to prevent small-diameter crushed stone from entering the double roll crusher 1. Its upper end is fixed to the vibrating screen plate 3, and its lower end extends to the front of the double roll crusher 1.

[0035] Preferably, each of the baffle units is provided with a crushing block 17 on the side facing the rotor 18.

[0036] Preferably, the frame is fixed to liftable outriggers, which are driven by a walking mechanism.

[0037] Compared with the prior art, the advantages of the present invention are:

[0038] 1. Enables rapid, efficient, and mechanized on-site crushing of cement concrete pavements of varying strengths, suitable for long-term construction projects. The crushed material meets construction quality requirements, increasing construction speed. It effectively addresses the challenges of controlling the thickness and hardness of old concrete pavements, the requirements for recycled materials, and the production capacity of cold recycling units.

[0039] 2. Research and solve the design of the combination of crushing plate, milling crushing cover and heavy milling rotor, solve the crushing of large particles, and research and produce recycled base aggregate that meets the specifications and can be adapted to various old cement road conditions.

[0040] 3. Strengthen research on energy-saving technologies for transmission systems, optimize energy-saving control schemes, ultimate load control technologies, energy-saving temperature control technologies, and intelligent engine speed control technologies.

[0041] 4. Effectively solves the problem of reflective cracking in the reconstruction of "white-on-black" pavements, improving road performance. Effectively solves the problems of poor road durability and early-age defects caused by the previous "white-on-black" method of directly using old cement concrete pavement as the base layer, where the stability, compactness, integrity, uneven support, uneven deformation, and strength of the base layer and subgrade were not addressed.

[0042] 5. It can regenerate a 32cm thick road surface structure layer in one go, with a regeneration width of up to 3.8m. On-site full recycling construction can save a lot of cost expenditures, and at the same time, it can effectively solve the problem of resource waste. The secondary recycling of construction waste has a great effect on solving environmental pollution and resource scarcity, and achieves the expected goals of saving costs and reducing energy consumption.

[0043] 6. Shorten the construction period and reduce the impact on traffic. The fully integrated recycling machine can be compacted and formed immediately and then quickly opened to traffic. Attached Figure Description

[0044] Figure 1 The diagram shows the working status of a cement pavement in-situ crushing and fully recycled aggregate machine that integrates multiple synergistic crushing methods when the pavement strength is less than the set value.

[0045] Figure 2 for Figure 1 A partial view;

[0046] Figure 3 The diagram shows the working status of the on-site crushing and recycling aggregate machine for cement pavement, which integrates multiple synergistic crushing methods, when the pavement strength exceeds the set value.

[0047] Figure 4 for Figure 3 A partial view;

[0048] Figure 5 The working status diagram of the cement pavement in-situ crushing and recycling aggregate machine that integrates multiple collaborative crushing methods is shown when the pavement strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the extrusion and impact crushing space exceeds the set value R1.

[0049] Figure 6 for Figure 5 A partial view;

[0050] Figure 7 This is a diagram showing the connection relationship between the connector and baffle six.

[0051] Figure 8 A top view of a cement pavement in-situ crushing and fully recycled aggregate machine that integrates multiple collaborative crushing methods.

[0052] Among them, 1-double roll crusher, 2-cover, 3-vibrating screen plate, 4-rotor shaft one, 5-movable screen plate, 6-cylinder one, 7-rotor shaft two, 8-upper cover plate, 9-baffle one, 10-cylinder two, 11-rotor shaft three, 12-support, 13-rotor shaft four, 14-baffle two, 15-engine, 16-cylinder three, 17-crushed block, 18-rotor, 19-baffle three, 20-baffle four, 21-baffle five, 22-baffle six. Detailed Implementation

[0053] The following will describe in more detail the in-situ crushing and fully recycled aggregate machine for cement pavement integrating multiple synergistic crushing methods of the present invention with reference to the schematic diagrams, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving the advantageous effects of the invention. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0054] like Figures 1-8 This is an in-situ crushing and recycling aggregate machine for cement pavement that integrates multiple synergistic crushing methods. It is used for crushing and recycling cement roads, and can produce crushed stone materials that meet the graded aggregate requirements for highway base courses. The equipment can employ three methods to crush cement roads according to their strength.

[0055] This equipment is an in-situ fully recycled aggregate machine for road water-stabilized base course under different working conditions, integrating crushing and mixing. It is the first to realize the in-situ fully recycled aggregate machine for waste cement concrete pavement of different strengths under complex conditions, forming a new equipment and technology for special treatment of waste concrete pavement reconstruction under different conditions.

[0056] The application of this equipment in the construction of old cement concrete pavements not only improves pavement performance but also further enhances the "greener, more efficient, and more environmentally friendly" construction concept for highway transportation. It improves the application level of waste concrete pavements under different working conditions in road engineering, further increasing utilization and resource recovery. This has achieved the reduction of construction waste in my country, mitigated the adverse environmental impact of road reconstruction, effectively shortened reconstruction time by more than 40%, and saved energy by approximately 35%.

[0057] like Figures 1-8 The cement pavement in-situ crushing and fully recycled aggregate machine integrates multiple collaborative crushing methods, including: frame, cover 2, rotor 18, baffle unit and screen plate unit.

[0058] The frame is fixed to liftable outriggers, which are driven by a track structure. Specifically, the track structure is existing technology.

[0059] Specifically, there are four outriggers, each with a hydraulic cylinder. By raising and lowering the outriggers, the height of the chassis can be adjusted to change the working depth of the milling rotor 18.

[0060] A sleeve is installed at the end of the frame. The top surface of the sleeve is closed. The sleeve is fitted onto the output shaft of the hydraulic cylinder. Bolts are installed on the top surface of the sleeve to connect the hydraulic cylinder and the sleeve.

[0061] The cover 2 is fixedly connected to the frame, and the lower end face of the cover 2 is open to allow the crushed stone to slide to the ground.

[0062] Rotor 18 (milling rotor) is used for cutting road surface. Its shaft is rotatably mounted in the housing 2 through bearings. The cutting teeth on it rotate with the rotor and extend out of the lower end face of the housing 2.

[0063] One end (left end) of the rotor 18's shaft extends out of the housing 2 and forms a belt drive with the engine 15 on the frame.

[0064] That is, the rotor is driven by the engine through a belt to rotate the rotor on one side.

[0065] The engine 15 is rigidly connected to the chassis.

[0066] The direction of the linear velocity V1 of the rotor 18 during cutting is the same as the direction of the moving velocity V2 of the frame. That is, the rotation direction of the rotor 18 is opposite to the rotation direction of the track. In this embodiment, the rotor 18 rotates counterclockwise, and the track rotates clockwise.

[0067] In this embodiment, the direction of the frame's moving speed V2 is the "forward" direction. The direction perpendicular to the paper surface and inward is the "left" direction.

[0068] baffle unit, such as Figures 3-4 When the road surface strength is greater than the set value Q1, it is activated to form a crushing and impacting space with the rotor 18. It is set between the frame and the cover 2 and is located in front of the rotor 18. The working end of the baffle unit is located inside the cover, and the radial distance between it and the rotor 18 is adjustable.

[0069] Specifically, the baffle unit includes:

[0070] The top cover plate 8, baffle one 9, bracket 12 and baffle two 14 are arranged in order from back to front.

[0071] The upper cover plate 8 rotates around the second pivot 7, the first baffle 9 rotates around the third pivot 11, and the second baffle 14 rotates around the fourth pivot 13.

[0072] The activation state of the baffle unit is as follows:

[0073] like Figures 3-4When the road surface strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the crushing space is less than the set value R1, the upper cover plate 8, the first baffle 9 and the second baffle 14 are all activated.

[0074] like Figures 5-6 When the road surface strength is greater than the set value Q1, and the particle size of the crushed stone thrown out by the crushing space exceeds the set value R1, the second baffle 14 is activated.

[0075] The upper cover plate 8 is used to prevent crushed stone materials in the crushing space from hitting the cover 2. It is located in the space formed by the cover 2, and its rear end is rotatably connected to the cover 2 through the second rotating shaft 7. The second rotating shaft 7 is fixed to the cover 2.

[0076] Baffle 9 passes through cover 2, and its front end is hinged to bracket 12 via pivot 11, pivot 11 is fixed to bracket 12; its rear end is hinged to the output end of cylinder 10, cylinder body of cylinder 10 is hinged to frame; baffle 9 contacts the lower surface of upper cover 8 to support upper cover 8.

[0077] The bracket 12 is fixed to the frame.

[0078] The second baffle 14 is hinged to the bracket 12 at its rear end via the fourth pivot 13, and the fourth pivot 13 is fixed to the bracket 12; its front end is hinged to the output end of the third hydraulic cylinder 16.

[0079] The output shaft of hydraulic cylinder 16 passes through housing 2, and its cylinder body is hinged to the frame. Preferably, the front end face of housing 2 is open to prevent interference with baffle 14, such as... Figures 1-2 As shown.

[0080] Both baffle 19 and baffle 214 are provided with crushing blocks 17 on the side facing the rotor 18.

[0081] Sieve plate unit, such as Figures 5-6 When the road surface strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the extrusion crushing space exceeds the set value R1, it is activated to receive the crushed stone thrown out by the extrusion crushing space and separate the large-diameter crushed stone and small-diameter crushed stone through the screen holes (to meet the aggregate requirements and reduce the re-wearing and crushing of small-diameter particles). The large-diameter crushed stone is then fed into the double roll crusher 1 for secondary crushing.

[0082] The sieve plate unit is located between the frame and the cover 2, and is located behind the baffle unit; the working end of the sieve plate unit is located inside the cover 2, and its inclination is adjustable.

[0083] Specifically, the sieve plate unit includes:

[0084] The movable screen plate 5 is located behind the upper cover plate 8. The movable screen plate 5 is rotatably mounted in the cover 2 via the rotating shaft 4. Its upper end is hinged to the output end of the hydraulic cylinder 16. The cylinder body of the hydraulic cylinder 16 passes through the cover 2 and is hinged to the frame.

[0085] Vibrating screen plate 3 is sleeved on shaft 4 and can rotate around shaft 4, with screen holes opened on it; vibrating screen plate 3 is connected to the inner wall of cover 2 through support member, and its lower end is located above double roll crusher 1.

[0086] Furthermore, a vibrator is installed on the side (non-working surface) of the vibrating screen plate 3. The working surface of the vibrating screen plate 3 refers to its upper surface, that is, the surface that receives large-diameter crushed stone.

[0087] The support is a spring. One end of the support is fixed to the lower surface of the vibrating screen plate 3, and the other end is fixed to the inner wall of the cover 2. The support vibrates up and down to accelerate the separation of small-diameter crushed stone and large-diameter crushed stone.

[0088] Among them, the vibrating screen plate 3 rotates around the rotating shaft 4 as the support vibrates up and down.

[0089] The double roll crusher 1 has its shell fixed to the inner wall of the cover 2, and its output end (connected to the input end) is located below its input end (the gap formed by a pair of rollers), and its input end is located below the screen plate unit.

[0090] Large-diameter crushed stone that slides off the vibrating screen plate 3 enters the gap formed by a pair of rollers for secondary crushing and finally slides off to the ground with the rollers.

[0091] Furthermore, such as Figure 7 A baffle plate 22 is fixedly installed on the inner surface of the cover 2. The baffle plate 22 and the frame are fixedly connected by a connector, which passes through the cover 2. The baffle plate 22 is sleeved on the rotating shaft 7. At least one side of the baffle plate 22 is fixed to the inner wall of the cover 2, such as the left side (the side perpendicular to the paper and facing inward).

[0092] Baffle 5 21 is provided at the rear of baffle 6 22. Baffle 5 21 is located behind the input end of the double roll crusher 1.

[0093] When the road surface strength is greater than the set value Q1, and the size of the crushed stone material thrown out by the crushing space exceeds the set value R1, the baffle 5 21 is used to prevent large-diameter crushed stone material from sliding to the outside of the double roll crusher; the piston rod of the hydraulic cylinder 3 16 passes through the baffle 6 22 and extends toward the rotor 18; the movable screen plate 5 and the vibrating screen plate 3 are both located below the baffle 6 22.

[0094] The recycling aggregate machine also includes an arc-shaped baffle and a baffle plate seven.

[0095] Baffle 7 is fixed to the inner wall of cover 2 and is located in front of baffle 9;

[0096] An arc-shaped baffle passes through the cover 2, with its front end fixed to the rear section of the second baffle 14, and its rear section can move along the upper surface of the seventh baffle.

[0097] like Figures 3-4 When Q1 is activated when the road surface strength is greater than the set value, the movable screen plate 5, baffle 6 22, upper cover plate 8, baffle 1 9, baffle 7, arc baffle and baffle 2 14 will come into contact in sequence to prevent cement blocks or gravel blocks in the crushing space from hitting the cover 2 and to prevent dust from spreading into the gap between the cover 2 and the baffle unit and overflowing into the air.

[0098] The upper end of the movable sieve plate 5 abuts against the lower surface of the baffle plate 6 22.

[0099] The cement blocks formed by the cutting of the rotor 18 are crushed into crushed stone by the compression and impact crushing space. The crushed stone slides down the lower surface of the upper cover plate 8, the lower surface of the baffle plate 6 22, the lower surface of the screen plate 5 and the baffle plate 3 19 to the ground behind the rotor 18.

[0100] The recycling aggregate machine also includes baffle 319 and baffle 420.

[0101] Baffle 3 19 is fitted onto rotating shaft 4 with an interference fit. Baffle 3 19 remains vertical and is located behind rotor 18. Furthermore, the left side of baffle 3 19 is fixed to the inner wall of housing 2.

[0102] Baffle 4 20 is used to prevent small-diameter crushed stone from entering the double roll crusher 1. Its upper end is fixed to the vibrating screen plate 3, and its lower end extends to the front of the double roll crusher 1.

[0103] Working principle of an in-situ crushing and recycling aggregate machine for cement pavement integrating multiple synergistic crushing methods:

[0104] like Figures 1-2 When the road surface strength is less than the set value Q1, that is, the cement road has low strength, the rotor can be used to directly cut the cement road.

[0105] Step 1: Lower the outriggers, and the rotor 18 is lowered to the required working depth. The screen plate unit and the baffle unit are both moved away from the rotor 18.

[0106] Step 2: The frame moves forward and the rotor 18 rotates counterclockwise. The cutting teeth on the rotor 18 cut the cement road in sequence, turning the cement road into gravel.

[0107] 2. For example Figures 3-4 When the road surface strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the crushing space is less than the set value R1, the cement road has a high strength.

[0108] Step 1: Lower the outriggers and reduce the rotor 18 to the required working depth.

[0109] Step 2: Use a hydraulic impact hammer and multi-point hammer to pre-crush the cement road, creating continuous cracks in the pre-treated cement road.

[0110] Step 3: Activate the baffle unit to create a crushing and breaking space.

[0111] Specifically, cylinder 3 16 extends, and baffle 2 14 approaches rotor 18; cylinder 2 10 extends, and baffle 1 9 approaches rotor 18.

[0112] Step 4: The frame moves forward, and the rotor 18 rotates counterclockwise. The cutting teeth on the rotor 18 cut the cement road in sequence, cutting the pre-cracked cement road into cement blocks. During the cutting process, the rotor throws the cement blocks upward.

[0113] Step 5: The cement block is between baffle 2 14 and baffle 1 9. As the rotor rotates, it is continuously crushed by multiple cutting teeth, cutting tooth seats and cutting tooth seat frames on rotor 18.

[0114] 3. For example Figures 5-6 When the road surface strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the crushing space exceeds the set value R1:

[0115] Step 1: Lower the outriggers and reduce the rotor 18 to the required working depth.

[0116] Step 2: Use a hydraulic impact hammer and multi-point hammer to pre-crush the cement road, creating continuous cracks in the pre-treated cement road.

[0117] Step 3: Activate the second baffle 14 of the baffle unit to form a crushing and impacting space; adjust the tilt angle of the screen plate unit so that it can receive the crushed stone material thrown out of the crushing and impacting space; and start the double roll crusher 1.

[0118] Specifically, cylinder 3 (16) extends, and baffle 2 (14) approaches rotor 18.

[0119] The hydraulic cylinder 6 extends, and the movable screen plate 5 approaches the rotor 18. Both the movable screen plate 5 and the vibrating screen plate 3 are inclined. The inclination angle α of the movable screen plate 5 (the angle between it and V2) is greater than or equal to the inclination angle β of the vibrating screen plate 3 (the angle between it and V2), so that the crushed stone can slide along the movable screen plate 5 to the vibrating screen plate 3.

[0120] In this case, the second cylinder 10 is in the initial retracted state, and the upper cover plate 8 and the first baffle 9 are both far away from the rotor 18. The upper cover plate 8, the first baffle 9 and the rotor 18 form a space for receiving crushed stone.

[0121] Compared to the design where the upper cover plate and baffle 9 are close to the rotor 18, the upper cover plate 8 and baffle 9 are both far away from the rotor 18, which results in more crushed stone entering the movable screen plate 5 per unit time, thereby improving the efficiency of crushed stone entering the movable screen plate 5.

[0122] Step 4: The frame moves forward, and rotor 18 rotates counterclockwise. The cutting teeth on rotor 18 cut the cement road sequentially, breaking the pre-cracked cement road into cement blocks; during the cutting process, the rotor throws the cement blocks upwards. Figure 6 The arrow in the image indicates the direction.

[0123] Step 5, primary crushing:

[0124] The cement block is between baffle 2 14 and baffle 1 9. As the rotor 18 rotates, it is continuously squeezed and crushed by multiple cutting teeth, cutting tooth seats and cutting tooth seat frames on the rotor 18 to form crushed stone.

[0125] Step 6, Secondary Crushing:

[0126] Rotor 18 throws the crushed stone onto the upper surface of the movable screen plate 5, where the stone slides from high to low towards the rear of the rotor. For example... Figure 6 The arrow in the image indicates the direction.

[0127] During the descent, small-diameter crushed stone (its diameter < set value R2, R2 < R1) falls to the ground through the screen holes of the movable screen plate 5 and the vibrating screen plate 3. Figure 6 The circle in the middle represents small-diameter crushed stone.

[0128] Large-diameter crushed stone (its diameter is greater than the set value R2) passes through the movable screen plate 5 and the vibrating screen plate 3 and enters the double roll crusher 1 for crushing. After crushing, it falls to the ground.

[0129] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the present invention. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and content disclosed in the present invention without departing from the scope of the present invention shall be deemed to have remained within the protection scope of the present invention.

Claims

1. A cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods, characterized in that, include: A frame and a housing (2), wherein the housing (2) is connected to the frame; The rotor (18) is used to cut the road surface. It is rotatably installed in the housing (2). Its shaft forms a belt drive with the engine (15) on the frame. The direction of the linear velocity V1 of the rotor (18) is the same as the direction of the moving velocity V2 of the frame. The baffle unit is activated when the road surface strength is greater than the set value Q1, forming a crushing and impacting space with the rotor (18). It is located between the frame and the cover (2) and in front of the rotor (18). The working end of the baffle unit is located inside the cover, and the distance between it and the rotor (18) is adjustable. The screen plate unit is activated when the road surface strength is greater than the set value Q1 and the particle size of the crushed stone thrown out by the extrusion crushing space exceeds the set value R1. It is used to receive the crushed stone thrown out by the extrusion crushing space and separate large-diameter crushed stone and small-diameter crushed stone through the screen holes on it. The large-diameter crushed stone is then fed into the double roll crusher (1) for secondary crushing. It is set between the frame and the cover (2) and is located behind the baffle unit. The active end of the screen plate unit is located inside the cover (2) and its inclination can be adjusted. The double roll crusher (1) has its shell fixed to the inner wall of the cover (2), its output end is located below its input end, and its input end is located below the screen plate unit; The baffle unit includes: The top cover (8), baffle one (9), bracket (12) and baffle two (14) are arranged in order from back to front; The upper cover plate (8) is used to prevent crushed stone materials in the crushing space from hitting the cover (2). It is located in the space formed by the cover (2), and its rear end is rotatably connected to the cover (2) through the second rotating shaft (7). The second rotating shaft (7) is fixed to the cover (2). The first baffle (9) passes through the cover (2), its front end is hinged to the bracket (12), and its rear end is hinged to the output end of the second cylinder (10). The cylinder body of the second cylinder (10) is hinged to the frame. The first baffle (9) contacts the lower surface of the upper cover (8) to support the upper cover (8). The bracket (12) is fixed to the frame. The second baffle (14) has its rear end hinged to the bracket (12) and its front end hinged to the output end of the third cylinder (16). The output shaft of the third cylinder (16) passes through the cover (2) and its cylinder body is hinged to the frame. The sieve plate unit includes: The movable screen plate (5) is located behind the upper cover plate (8); the movable screen plate (5) is rotatably mounted in the cover (2) via a rotating shaft (4), and its upper end is hinged to the output end of the oil cylinder (6). The cylinder body of the oil cylinder (6) passes through the cover (2) and is hinged to the frame.

2. The cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods as described in claim 1, characterized in that, The sieve plate unit also includes a vibrating sieve plate (3) that rotates around a rotating shaft (4) and has sieve holes on it; The vibrating screen plate (3) is connected to the inner wall of the cover (2) through a support member, and its lower end is located above the double roll crusher (1).

3. The cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods according to claim 2, characterized in that, The support is a spring. One end of the support is fixed to the lower surface of the vibrating screen plate (3), and the other end is fixed to the inner wall of the cover (2). The support vibrates up and down.

4. The cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods according to claim 2, characterized in that, The inner surface of the cover (2) is fixedly provided with a baffle six (22), and the baffle six (22) and the frame are fixedly connected by a connector, which passes through the cover (2); the baffle six (22) is sleeved on the rotating shaft two (7). Baffle five (21) is provided at the rear section of baffle six (22), and baffle five (21) is located behind the input end of the double roll crusher (1); When the road surface strength is greater than the set value Q1, and the particle size of the crushed stone thrown out by the crushing space exceeds the set value R1, the piston rod of the hydraulic cylinder (6) passes through the baffle (22) and extends toward the rotor (18); the movable screen plate (5) and the vibrating screen plate (3) are both located below the baffle (22).

5. The cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods according to claim 4, characterized in that, It also includes an arc-shaped baffle and baffle seven; The seventh baffle is fixed to the inner wall of the cover (2) and is located in front of the first baffle (9); The arc-shaped baffle passes through the cover (2), and its front end is fixed to the rear section of the baffle two (14), and its rear section can move along the upper surface of the baffle seven. When the road surface strength is greater than the set value Q1, the movable screen plate (5), baffle six (22), upper cover plate (8), baffle one (9), baffle seven, arc baffle and baffle two (14) will come into contact in sequence; The upper end of the movable sieve plate (5) abuts against the lower surface of the baffle plate six (22).

6. The cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods according to claim 4, characterized in that, It also includes baffle three (19) and baffle four (20); The baffle three (19) is sleeved on the rotating shaft one (4) and forms an interference fit. The baffle three (19) is kept vertical and is located behind the rotor (18). The baffle four (20) is used to prevent small-diameter crushed stone from entering the double roll crusher (1). Its upper end is fixed to the vibrating screen plate (3), and its lower end extends to the front of the double roll crusher (1).

7. The cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods according to claim 1, characterized in that, Each of the baffle units is provided with a crushing block (17) on the side facing the rotor (18).

8. The cement pavement in-situ crushing and fully recycled aggregate machine integrating multiple synergistic crushing methods according to claim 1, characterized in that, The frame is fixed to liftable outriggers, which are driven by a walking mechanism.

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