Full-depth in-place recycling apparatus and method for cement concrete pavement

Abstract

The application provides a full-thickness on-site recycling device and method for a tire-type cement concrete pavement, which comprises a cover fixed between a device frame through a connecting piece, an adjusting oil cylinder used for driving a rotor to rotate around an axis of a mounting shaft to realize lifting of the rotor, an oblique arrangement, the rotor used for cutting a pavement, located in the cover, a first rotating shaft penetrating through the cover and rotatably mounted at a rear end of a rigid arm, the first rotating shaft forming a belt transmission with an engine on the device frame, the rigid arm used for ensuring that an axial distance between the rotor and the engine remains unchanged, located outside the cover, a front end of the rigid arm being rotatably connected with the mounting shaft, the mounting shaft being fixed on the device frame and coaxially arranged with an output shaft of the engine, and a baffle unit with an adjustable distance from the rotor. The application realizes free combination of working depth and aggregate grading.

Description

Technical Field

[0001] This invention belongs to the field of road regeneration technology, and in particular relates to a tire-type full-thickness in-situ regeneration equipment and method for cement concrete pavement. Background Technology

[0002] At the end of 2022, the total length of highways in my country reached 5.3548 million kilometers, ranking first in the world in terms of growth rate and total construction scale. This rapid growth in highway mileage has brought about a heavy workload of road maintenance. By the end of 2022, the length of highways under maintenance reached 5.3603 million kilometers, accounting for 99.9% of the total mileage. China's highway development has gradually transitioned from a "construction-oriented" approach to a new stage of development that combines construction and maintenance, with a future focus on maintenance. Road reconstruction is highly dependent on aggregate resources, and road engineering expansion and maintenance consume large amounts of stone and generate significant amounts of old road waste. The continuously increasing demand for stone, the accelerating consumption of natural resources, and the urgent environmental protection requirements are driving a shift in road construction and maintenance towards an environmentally friendly direction. Currently, the utilization rate of old road materials in my country is relatively low. Therefore, to improve the green, carbon-reducing, and efficient utilization of old roads, research and development of technologies and equipment for in-situ recycling of old materials under complex working conditions should be carried out to achieve a full-thickness, fully regenerated, one-time in-situ regenerated structural layer for old roads.

[0003] Cement concrete pavements are inherently strong, rigid, and durable, and do not decompose naturally. Disposing of untreated waste concrete through open-air dumping or landfilling will cause permanent pollution and ecological damage. In my country, a country with scarce resources, open-air dumping or backfilling of waste concrete waste wastes sand and gravel resources. Furthermore, the construction of new roads requires the re-mining of sand and gravel, leading to the excavation of large areas of mountains and the destruction of extensive vegetation. In addition, the cleanup and transportation of waste concrete incurs enormous costs and pollutes the environment.

[0004] Currently, with the deepening of environmental protection and sustainable development strategies, the rational and effective treatment of old concrete pavements and various road structural layers is increasingly worthy of in-depth research. The on-site recycling of old roads can effectively solve this problem. Recycled coarse and fine aggregates formed from waste concrete pavements and road structural layers can partially or completely replace natural aggregates in new roads or building materials, achieving efficient recycling. Utilizing their original properties, new products based on the road performance of recycled aggregates from old cement concrete can be developed. This not only allows for the recycling of limited resources but also solves some environmental problems, meeting the national need to build a resource-conserving society and playing a significant role in achieving sustainable development of building resources and the environment.

[0005] Currently, there are many methods for renovating and maintaining old concrete pavements based on their condition, which can meet certain road performance requirements in the short term. However, how to achieve more efficient, economical, and high-value recycling is an urgent problem to be solved. Due to the current state of road traffic, actual performance, high strength of old concrete, and complex working conditions and environment, existing crushing and recycling technologies cannot meet the needs of socio-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.

[0006] 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 waste concrete roads.

[0007] The particle size distribution of aggregates is mainly achieved by cutting with rotor cutters and using crushing methods such as jaw crushers, compression crushers, and impact crushers, and then regenerating them through a series of structural combination processes.

[0008] The particle morphology of aggregates depends on the structure of the recycling equipment and the physical properties of the old road material. If the proportion of needle-shaped and flaky particles in the aggregate is high, it will affect the compressive strength, water stability, and other road performance properties of the internal structure of the recycled structure layer. New structural equipment processing technology, as an emerging technology, can rapidly recycle aggregates of different gradations under different working conditions while ensuring aggregate quality.

[0009] The characteristics of recycled materials, the structural parameters of the recycling equipment, and the operating parameters have the most direct impact on the recycling effect. After recycling, the particle size distribution range of the aggregate may fluctuate, but it can be maintained within a certain required range by adjusting the raw material properties, the structure of the new equipment, and the production method.

[0010] However, the existing technology has the following drawbacks: given a working depth, a tire-mounted crusher can only produce aggregates of one gradation, that is, the working depth and aggregate gradation cannot be freely combined. Summary of the Invention

[0011] The purpose of this invention is to provide a tire-mounted, full-thickness in-situ recycling device and method for cement concrete pavements, with freely combinable working depth and aggregate gradation. The technical solution for adjusting the mechanical equipment combination is as follows:

[0012] A tire-mounted, full-thickness in-situ recycling device for cement concrete pavement includes:

[0013] The equipment frame is fixedly connected to the output end of the support leg, which is liftable;

[0014] The housing 1 is fixed to the equipment frame by a connector;

[0015] Rotor 13, used for cutting the road surface, is located inside housing 1. Its first rotating shaft passes through housing 1 and is rotatably mounted on the rear end of rigid arm 17. The first rotating shaft forms a belt drive with engine 10 on the equipment frame. The direction of the linear velocity V1 of the rotor 13 cutting is the same as the direction of the moving velocity V2 of the equipment frame.

[0016] The rigid arm 17, which is used to ensure that the axial distance between the rotor 13 and the engine 10 remains constant, is located outside the housing 1 and its front end is rotatably connected to the mounting shaft; the mounting shaft is fixed on the equipment frame and is coaxially arranged with the output shaft of the engine 10.

[0017] An adjusting cylinder is used to drive the rotor 13 to rotate around the axis of the mounting shaft to achieve the lifting and lowering of the rotor 13. It is located outside the cover 1 and is inclined. The cylinder body of the adjusting cylinder is hinged to the equipment frame, and its cylinder rod is hinged to the rigid arm 17.

[0018] The distance between the baffle unit and the rotor 13 is adjustable; the baffle unit includes a telescopic component and a baffle component.

[0019] The telescopic component is hinged between the equipment frame and the baffle component;

[0020] The baffle component is located in front of the rotor 13, with its working surface inside the cover 1, and its other end passing through the cover 1 and hinged to the equipment frame.

[0021] When the road surface strength is greater than the set value Q1, the telescopic component is activated so that the baffle unit approaches the rotor 13, and the baffle component and the rotor 13 form a crushing and impacting structural space.

[0022] Preferably, the baffle unit includes:

[0023] The top cover plate 3, baffle one 4, bracket 7 and baffle two 9 are arranged in order from back to front;

[0024] The upper cover plate 3 is used to prevent crushed stone materials in the structural space from hitting the cover 1 when squeezed, struck, countered, cut, and broken. It is located in the structural space formed by the cover 1, and its rear end is rotatably connected to the cover 1 through a rotating shaft 2. The rotating shaft 2 is fixed to the cover 1.

[0025] The baffle 4 passes through the cover 1, its front end is hinged to the bracket 7, and its rear end is hinged to the output end of the hydraulic cylinder 5. The cylinder body of the hydraulic cylinder 5 is hinged to the equipment frame. The baffle 4 contacts the lower surface of the upper cover 3 to support the upper cover 3. The bracket 7 is fixed to the equipment frame.

[0026] The second baffle 9 is hinged at its rear end to the bracket 7 and at its front end to the output end of the second hydraulic cylinder 11. The output shaft of the second hydraulic cylinder 11 passes through the cover 1 and its cylinder body is hinged to the equipment frame.

[0027] Preferably, a baffle 3 14 is fixedly provided on the inner surface of the cover 1, and the baffle 3 14 and the equipment frame are hinged together by a connector, which passes through the cover 1; the baffle 3 14 is sleeved on the rotating shaft 2.

[0028] Preferably, the connector includes a first component and a second component, one end of the first component passes through the cover 1 and is fixed to the baffle 14, the other end of the first component is hinged to the second component, and the second component is hinged to the equipment frame.

[0029] Preferably, it also includes an arc-shaped baffle 16 and a fourth baffle 15;

[0030] The baffle 4 15 is fixed to the inner wall of the cover 1 and is located in front of the baffle 1 4;

[0031] The arc-shaped baffle 16 passes through the cover 1, and its front end is fixed to the rear section of the second baffle 9. Its rear section can move along the upper surface of the fourth baffle 15.

[0032] When the road surface strength is greater than the set value Q1, the baffle 3 14, the upper cover plate 2, the baffle 1 4, the baffle 4 15, the arc-shaped baffle 16 and the baffle 2 9 will come into contact in sequence.

[0033] Preferably, the outrigger is a hydraulic cylinder, and the equipment frame is sleeved and fixed to the cylinder rod of the hydraulic cylinder.

[0034] A method for recycling crushed cement roads, wherein the direction of the linear velocity V1 of the rotor 13 cutting is the same as the direction of the moving velocity V2 of the equipment frame, includes the step of adjusting the working depth of the cover 1, specifically including:

[0035] Step A: The outriggers descend, causing the equipment frame and housing 2 to descend to a first height H1. When the descent height H1 is reached, the outriggers stop moving, the housing 2 contacts the concrete road, and the rotor 13 is flush with the lower end face of the housing 2.

[0036] Step B: Adjust the extension of the hydraulic cylinder to drive the rigid arm 17 to swing around the mounting shaft;

[0037] As the rotor 13 swings with the rigid arm 17, the rotor 13 descends to a second height H2.

[0038] Preferably, the method includes a crushing and recycling step when the pavement strength is greater than a set value Q1, specifically:

[0039] Step 1: Activate the baffle unit to bring it close to the rotor 13, so as to form a crushing and breaking structure space with the rotor 13;

[0040] Step 2: The equipment frame moves and the rotor 13 rotates. The cutting teeth on the rotor 13 cut the cement road in sequence, cutting the pre-cracked cement road into cement blocks.

[0041] During the cutting process, the rotor throws cement blocks upwards to compress and crush the structural space;

[0042] Step 3: After the cement block is squeezed and impacted to break the structural space, it forms crushed stone, thus completing the crushing process.

[0043] Preferably, the method further includes a crushing and recycling step when the pavement strength is less than a set value Q1, specifically:

[0044] The baffle unit moves away from the rotor 13, the equipment frame moves, the rotor 13 rotates, and the cutting teeth on the rotor 13 cut the cement road in sequence, cutting the cement road into crushed stone, thus completing the crushing.

[0045] Compared with the prior art, the advantages of the present invention are:

[0046] 1. Based on the same full-thickness in-situ recycling equipment, the working depth and aggregate gradation can be freely combined, enabling the in-situ full recycling of well-graded aggregates from different waste concrete pavements and other road structural layers. This achieves high-value, low-carbon, and large-scale utilization of aggregate-based in-situ full recycling technology for existing old cement concrete pavements and road structures. Specifically:

[0047] The outriggers descend by H1, and the adjusting cylinder drives the rotor 13 to swing backward around the mounting axis, causing the cover to descend by H2. Since the height H2 can have multiple values, the working depth of the rotor 13 can be N different.

[0048] By adjusting the distance between the baffle unit and the rotor 13, aggregates with different gradations can be obtained. Thus, this equipment can produce M types of aggregates with different gradations.

[0049] Therefore, the working depth and aggregate gradation can be freely combined.

[0050] 2. Enables free combination of working depth, aggregate gradation and pavement strength.

[0051] Mechanized construction using on-site, rapid, and efficient crushing equipment for cement concrete pavements of varying strengths is achieved. This equipment can be used for long-term construction of large-scale projects, and the crushed material meets construction quality requirements, thus increasing construction speed. It effectively addresses the issues of thickness, hardness, requirements for recycled materials, and the production capacity of cold recycling equipment. Furthermore, there is no interference between the casing and the baffle unit when adjusting the working depth.

[0052] 3. The fully recycled aggregate particles have an ideal shape, with very few flat and elongated particles (the content meets the requirements).

[0053] 4. Based on the analysis of crushing and recycling processes and equipment functions, the design requirements and overall layout of the on-site crushing and recycling equipment were determined. Through optimized manufacturing of equipment structure and combination, a series of previous crushing processes were incorporated (the key points of traditional factory processing are as follows: ① First, the primary crushing equipment uses a jaw crusher; ② Second, the secondary crushing equipment uses an impact crusher; ③ Recycling production uses a vertical impact crusher). By combining cutting, extrusion, impact, and counter-impact, the coarse and fine gradation requirements of the aggregates were obtained, ensuring the quality of the aggregates. Attached Figure Description

[0054] Figure 1 This is a state diagram of a full-thickness in-situ recycling device for tire-mounted cement concrete pavement when the pavement strength is less than the set value Q1.

[0055] Figure 2 for Figure 1 A partial sectional view;

[0056] Figure 3 This is a state diagram of a full-thickness in-situ recycling device for tire-mounted cement concrete pavement when the pavement strength is greater than the set value Q1.

[0057] Figure 4 for Figure 1 A partial sectional view;

[0058] Figure 1 A partial sectional view;

[0059] Figure 5 This is a diagram showing the connection relationship between the baffle plate and the connecting parts;

[0060] Figure 6 This is a top view of a tire-mounted cement concrete pavement full-thickness in-situ recycling system.

[0061] Among them, 1-cover, 2-rotor shaft one, 3-upper cover plate, 4-baffle one, 5-cylinder one, 6-rotor shaft two, 7-support, 8-rotor shaft three, 9-baffle two, 10-engine, 11-cylinder two, 12-crushing block, 13-rotor, 14-baffle three, 15-baffle four, 16-arc baffle, 17-rigid arm. Detailed Implementation

[0062] The tire-type full-thickness in-situ recycling equipment and method for cement concrete pavement of the present invention will be described in more detail below 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.

[0063] like Figures 1-6 A tire-mounted, full-thickness in-situ recycling device for cement concrete pavement, comprising:

[0064] The equipment frame is fixedly connected to the output end of the outriggers, which can be raised and lowered.

[0065] The outriggers can move with the traveling mechanism, which includes tires. Specifically, the outriggers are hydraulic cylinders, and the brackets are fitted onto the cylinder rods of the hydraulic cylinders.

[0066] A sleeve is installed at the end of the equipment 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.

[0067] The cover 1 is fixedly connected to the equipment frame by a connector.

[0068] A baffle 3 14 is fixedly installed on the inner surface of the housing 1. The baffle 3 14 and the equipment frame are hinged together by a connector that passes through the housing 1. The baffle 3 14 is sleeved on the rotating shaft 2. Figure 5 As shown, at least one side of the baffle 3 14 is fixed to the inner wall of the cover 1, such as the left side (a side perpendicular to the paper and facing inward).

[0069] The connector includes a first component and a second component. One end of the first component passes through the cover 1 and is fixed to the baffle 3 14. The other end of the first component is hinged to the second component, and the second component is fixedly connected to the equipment frame.

[0070] An adjusting cylinder is used to drive the rotor 13 to rotate around the axis of the mounting shaft to achieve the lifting and lowering of the rotor 13. It is located outside the cover 1 and is set at an angle.

[0071] The cylinder body of the adjusting cylinder is hinged to the equipment frame, and its cylinder rod is hinged to the rigid arm 17. Specifically, the adjusting cylinder is located on the outer left side of the casing.

[0072] A rigid arm 17, used to ensure that the axial distance between the rotor 13 and the engine 10 remains constant, is located outside the housing 1, and its front end is rotatably connected to the mounting shaft; the mounting shaft is fixed on the equipment frame and is coaxially arranged with the output shaft of the engine 10. Specifically, the mounting shaft is located to the left of the engine output shaft.

[0073] That is, the rigid arm 17 rotates around the mounting shaft under the drive of the adjusting cylinder.

[0074] The rotor 13, used for cutting the road surface, is located inside the housing 1. Its first shaft passes through the housing 1 and is rotatably mounted on the rear end of the rigid arm 17. The first shaft forms a belt drive with the engine 10 on the equipment frame. The direction of the linear velocity V1 of the rotor 13 cutting is the same as the direction of the moving velocity V2 of the equipment frame.

[0075] Since the first rotating shaft passes through the housing 1, a groove is provided on the housing 1 to allow the first rotating shaft to move, so as to ensure that there is no motion interference.

[0076] More specifically, the conveyor belt is also located outside the housing 1 and between the housing 1 and the rigid arm 17.

[0077] The distance between the baffle unit and the rotor 13 is adjustable.

[0078] The baffle unit includes telescopic components and baffle components.

[0079] The telescopic component is hinged between the equipment frame and the baffle component.

[0080] The baffle component is located in front of the rotor 13, with its working surface inside the cover 1, and its other end passing through the cover 1 and hinged to the equipment frame.

[0081] In this embodiment, the direction of the moving speed V2 of the equipment rack is the "forward" direction.

[0082] When the road surface strength is greater than the set value Q1, the telescopic component is activated so that the baffle unit is close to the rotor 13. The baffle component and the rotor 13 form a crushing and impact structure space. Through theoretical analysis of crushing mechanism and crushing strength and research on the influence of waste concrete slab particles, a mixed aggregate with a certain good gradation can be generated after simultaneous jaw crushing, impact crushing and hammer crushing in a limited space.

[0083] Specifically, the baffle unit includes:

[0084] The top cover plate 3, baffle one 4, bracket 7 and baffle two 9 are arranged in order from back to front;

[0085] The upper cover plate 3 is used to prevent crushed stone materials in the crushing structure space from hitting the cover 1. It is located in the structural space formed by the cover 1, and its rear end is rotatably connected to the cover 1 through a rotating shaft 2. The rotating shaft 2 is fixed to the cover 1.

[0086] Baffle 4 passes through cover 1, its front end is hinged to bracket 7, and its rear end is hinged to the output end of cylinder 5.

[0087] The cylinder body of hydraulic cylinder 5 is hinged to the equipment frame and extends into the housing 1. A gap is formed between the cylinder body of hydraulic cylinder 5 and the corresponding mounting hole on the housing 1 (the hole through which the cylinder body of hydraulic cylinder 5 passes) to allow the cylinder body of hydraulic cylinder 5 to move in and out of the housing 1 during the swinging process. Here, "moving in and out" means moving in and out relative to the housing 1.

[0088] The baffle 4 contacts the lower surface of the upper cover 3 to support the upper cover 3; the bracket 7 is fixed to the equipment frame;

[0089] Baffle 2 9, its rear end is hinged to bracket 7, its front end is hinged to the output end of cylinder 2 11, the output shaft of cylinder 2 11 passes through cover 1, and its cylinder body is hinged to equipment frame.

[0090] The baffle component refers to the baffle plate, and the telescopic component refers to the hydraulic cylinder.

[0091] Furthermore, it also includes an arc-shaped baffle 16 and a fourth baffle 15;

[0092] Baffle 4 15 is fixed to the inner wall of the cover 1 and is located in front of baffle 1 4;

[0093] Arc-shaped baffle 16 passes through cover 1, its front end is fixed to the rear section of baffle 2 9, and its rear section can move along the upper surface of baffle 4 15.

[0094] When the road surface strength is greater than the set value Q1, the baffle 3 14, the upper cover plate 2, the baffle 1 4, the baffle 4 15, the arc-shaped baffle 16 and the baffle 2 9 come into contact in sequence to prevent cement blocks or gravel blocks in the broken structure space from hitting the cover 1 and to prevent dust from spreading into the gap between the cover 1 and the baffle unit and overflowing into the air.

[0095] A method for crushing and recycling cement roads includes: adjusting the working depth of the cover 1, crushing and recycling when the road surface strength is greater than a set value Q1, and crushing and recycling when the road surface strength is less than the set value Q1.

[0096] 1. Steps for adjusting the working depth of cover 1:

[0097] Step A: The outriggers descend, causing the equipment frame and housing 2 to descend to a first height H1. When the descent height H1 is reached, the outriggers stop moving, the housing 2 contacts the concrete road, and the rotor 13 is flush with the lower end face of the housing 2.

[0098] Step B: Adjust the extension of the hydraulic cylinder to drive the rigid arm 17 to swing around the mounting shaft.

[0099] As the rotor 13 swings with the rigid arm 17, the rotor 13 descends to a second height H2.

[0100] Therefore, the working depth of the cover 2 can be formed in N ways.

[0101] 2. The crushing and recycling steps when the road surface strength is greater than the set value Q1:

[0102] (1) The rotor 13 is lowered to the required working depth.

[0103] (2) Use hydraulic impact hammers and multi-point hammers to pre-crush cement roads, so that the cement roads have continuous cracks.

[0104] (3) Start the baffle unit to bring it close to the rotor 13 so as to form a crushing and breaking structure space with the rotor 13.

[0105] Specifically, cylinder 211 extends and baffle 29 approaches rotor 13; cylinder 15 extends and baffle 14 approaches rotor 13.

[0106] (4) The equipment frame moves and the rotor 13 rotates. The cutting teeth on the rotor 13 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 upwards to squeeze and crush the structural space.

[0107] (5) After the cement block is squeezed and crushed, the structural space is broken into crushed stone, thus completing the crushing process.

[0108] The cement block is between baffle 29 and baffle 15. As the rotor rotates, it is continuously crushed by multiple cutting teeth, cutting tooth seats and cutting tooth seat frames on rotor 13.

[0109] 3. The crushing and recycling steps when the road surface strength is less than the set value Q1:

[0110] The baffle unit is located away from the rotor 13;

[0111] The equipment frame moves, the rotor 13 rotates, and the cutting teeth on the rotor 13 cut the cement road in sequence, cutting the cement road into crushed stone, thus completing the crushing process.

[0112] As described above, by adjusting the distance between the baffle unit and the rotor 13, aggregates with different gradations can be obtained. Therefore, this equipment can generate M types of aggregates with different gradations.

[0113] 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 tire-mounted, full-thickness in-situ recycling device for cement concrete pavement, characterized in that, include: The equipment frame is fixedly connected to the output end of the support leg, which is liftable; The housing (1) is fixed to the equipment frame by a connector; The rotor (13), used for cutting the road surface, is located inside the housing (1). Its first shaft passes through the housing (1) and is rotatably mounted on the rear end of the rigid arm (17). The first shaft forms a belt drive with the engine (10) on the equipment frame. The direction of the linear velocity V1 of the rotor (13) is the same as the direction of the moving velocity V2 of the equipment frame. The rigid arm (17), used to ensure that the axial distance between the rotor (13) and the engine (10) remains constant, is located outside the housing (1) and its front end is rotatably connected to the mounting shaft; the mounting shaft is fixed on the equipment frame and is coaxially arranged with the output shaft of the engine (10); An adjusting cylinder is used to drive the rotor (13) to rotate around the axis of the mounting shaft to achieve the lifting and lowering of the rotor (13). It is located outside the cover (1) and is inclined. The cylinder body of the adjusting cylinder is hinged to the equipment frame, and its cylinder rod is hinged to the rigid arm (17). The distance between the baffle unit and the rotor (13) is adjustable; the baffle unit includes a telescopic member and a baffle member; The telescopic component is hinged between the equipment frame and the baffle component; The baffle component is located in front of the rotor (13), its working surface is located inside the cover (1), and its other end passes through the cover (1) and is hinged to the equipment frame; When the road surface strength is greater than the set value Q1, the telescopic component is activated so that the baffle unit approaches the rotor (13), and the baffle component and the rotor (13) form a crushing and extruding structure space; When the road surface strength is less than the set value Q1, the baffle unit moves away from the rotor (13), the equipment frame moves, the rotor (13) rotates, and the cutting teeth on the rotor (13) cut the cement road in sequence, cutting the cement road into crushed stone and completing the crushing. The baffle unit includes: The top cover (3), baffle one (4), bracket (7) and baffle two (9) are arranged in order from back to front; The upper cover plate (3) is used to prevent crushed stone materials in the crushing structure space from hitting the cover (1). It is located in the structural space formed by the cover (1), and its rear end is rotatably connected to the cover (1) through a rotating shaft (2). The rotating shaft (2) is fixed to the cover (1). The first baffle (4) passes through the cover (1), its front end is hinged to the bracket (7), and its rear end is hinged to the output end of the first cylinder (5). The cylinder body of the first cylinder (5) is hinged to the equipment frame. The first baffle (4) contacts the lower surface of the upper cover (3) to support the upper cover (3). The bracket (7) is fixed to the equipment frame. The second baffle (9) has its rear end hinged to the bracket (7) and its front end hinged to the output end of the second cylinder (11). The output shaft of the second cylinder (11) passes through the cover (1) and its cylinder body is hinged to the equipment frame. The inner surface of the cover (1) is fixedly provided with baffle three (14), and the baffle three (14) and the equipment frame are hinged together by a connector, which passes through the cover (1); the baffle three (14) is sleeved on the rotating shaft one (2). It also includes an arc-shaped baffle (16) and a fourth baffle (15); The fourth baffle (15) is fixed to the inner wall of the cover (1) and is located in front of the first baffle (4); The arc-shaped baffle (16) passes through the cover (1), and its front end is fixed to the rear section of the baffle two (9), and its rear section can move along the upper surface of the baffle four (15). When the road surface strength is greater than the set value Q1, the baffle three (14), the upper cover plate (3), the baffle one (4), the baffle four (15), the arc baffle (16) and the baffle two (9) come into contact in sequence.

2. The tire-mounted cement concrete pavement full-thickness on-site recycling equipment according to claim 1, characterized in that, The connector includes a first component and a second component. One end of the first component passes through the cover (1) and is fixed to the baffle three (14). The other end of the first component is hinged to the second component, and the second component is hinged to the equipment frame.

3. The tire-mounted, full-thickness in-situ recycling equipment for cement concrete pavement according to claim 1, characterized in that, The outrigger is a hydraulic cylinder, and the equipment frame is fitted and fixed to the cylinder rod of the hydraulic cylinder.

4. A method for recycling crushed cement roads, based on the tire-mounted full-thickness on-site recycling equipment for cement concrete pavements as described in any one of claims 1 to 3, characterized in that, The direction of the linear velocity V1 of the rotor (13) cutting is the same as the direction of the moving velocity V2 of the equipment frame. The steps include adjusting the working depth of the cover (1), specifically including: Step A: The outriggers descend, causing the equipment frame and housing (1) to descend to a first height H1. When the descent height H1 is reached, the outriggers stop moving, the housing (1) contacts the cement road, and the rotor (13) is flush with the lower end face of the housing (1). Step B: Adjust the extension of the hydraulic cylinder to drive the rigid arm (17) to swing around the mounting shaft; As the rotor (13) swings with the rigid arm (17), the rotor (13) descends to a second height H2.

5. The method for recycling crushed cement roads according to claim 4, characterized in that, This includes the crushing and recycling steps when the pavement strength is greater than the set value Q1, specifically: Step 1: Activate the baffle unit to bring it close to the rotor (13) so as to form a crushing and breaking structure space with the rotor (13); Step 2: The equipment frame moves and the rotor (13) rotates. The cutting teeth on the rotor (13) cut the cement road in sequence, cutting the pre-cracked cement road into cement blocks. During the cutting process, the rotor throws cement blocks upwards to compress and crush the structural space; Step 3: After the cement block is squeezed and impacted to break the structural space, it forms crushed stone, thus completing the crushing process.

6. The method for recycling crushed cement roads according to claim 4, characterized in that, It also includes a crushing and recycling step when the pavement strength is less than the set value Q1, specifically: The baffle unit moves away from the rotor (13), the equipment frame moves, the rotor (13) rotates, and the cutting teeth on the rotor (13) cut the cement road in sequence, cutting the cement road into crushed stone, thus completing the crushing.

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