A device for recycling waste concrete pavement in situ by using multiple crushing methods

Abstract

The utility model discloses a kind of waste concrete pavement on-site recycling device using multiple crushing mode, including mounting bracket, drum is rotationally equipped in mounting bracket inside, multiple barb saw teeth are equipped on the outer side of drum, clamping sleeve is equipped on mounting bracket, mounting seat is equipped in mounting bracket lower side, unlocking sleeve is rotationally equipped in clamping sleeve outside, clamping rod is equipped in clamping sleeve inside, multiple cooperation slots are formed in unlocking sleeve side, multiple cooperation frames are fixedly equipped in clamping sleeve outside, rotating lever is rotationally equipped in cooperation frame inside, rotating lever one end is clamped into cooperation slot, top sleeve is equipped in clamping sleeve outside, and movable connection is carried out between the inner wall of top sleeve and the outer wall of clamping sleeve by thread, movable slot is formed in clamping sleeve side wall, clamping ball is rotationally equipped in movable slot, push block is fixedly connected in clamping rod one end, clamping slot is formed between push block and clamping rod, variable-diameter groove is formed in unlocking sleeve inside by variable-diameter, the utility model realizes the tool-free convenient disassembly of broken roll, and guarantees the structure stability after broken roll installation.

Description

Technical Field

[0001] This utility model relates to the field of on-site recycling technology for waste concrete pavement, and more specifically, it relates to an on-site recycling device for waste concrete pavement using multiple crushing methods. Background Technology

[0002] In existing technologies, waste concrete pavement in-situ recycling devices employing multiple crushing methods serve as important mechanical equipment for road maintenance, municipal engineering renovation, highway resurfacing, and the resource utilization of waste pavement. They are widely used in various construction scenarios such as old road renovation, damaged pavement repair, and waste concrete recycling. The core working component is a roller with barbed serrations on its outer side, also known as a crushing roller. The high-speed rotation of the crushing roller utilizes the barbed serrations to repeatedly impact, shear, and tear the waste concrete pavement, achieving efficient crushing. However, existing crushing rollers, during long-term high-intensity crushing operations, repeatedly bear the impact load of waste concrete, frequently suffer wear and tear from the steel reinforcement in the pavement, and are continuously subjected to... The harsh working conditions, such as grinding and corrosion of hard aggregates, can easily cause the barbed serrations installed on the outside to fail and become dull at the tips, chip or break at the blades, and fatigue fracture at the root. In such cases, it is necessary to disassemble, replace or maintain the crushing roller in a timely manner. However, in the existing technology, when it is necessary to install or disassemble the crushing roller, it is usually necessary to use professional tools such as wrenches, sockets, and pry bars to complete the disassembly and assembly operations. Moreover, if the tool model does not meet the assembly specifications, the tool types are not complete, or the tools are damaged or lost at the construction site, it is easy to make it impossible to disassemble, maintain or even replace the crushing roller in a timely manner, delaying the road construction progress, affecting the timely completion of the project, increasing the downtime of equipment, reducing the efficiency of construction operations, and causing additional expenses for labor costs and machine shifts, thus increasing the total construction cost.

[0003] Secondly, while some improved waste concrete pavement in-situ recycling devices achieve tool-free disassembly, maintenance, and replacement of the crushing roller through the cooperation of some components, the design of these quick-release fixing structures is relatively simple, lacking mechanical connection stability and locking reliability. This makes them susceptible to dangerous situations such as accidental loosening and displacement of the fixing components, failure and slippage of the locking mechanism, or even accidental unlocking and detachment of the crushing roller due to vibrations and impacts generated during equipment operation, repeated impacts from concrete blocks during crushing operations, lateral forces generated by the entanglement and pulling of the steel reinforcement skeleton in the pavement, inertial impact loads caused by frequent start-ups and shutdowns of the equipment, and other external forces under complex working conditions at the construction site. These situations can lead to dangerous situations such as the rotating crushing roller suddenly falling off and injuring construction workers or damaging surrounding construction equipment, causing serious safety accidents. Furthermore, the loose fixing structure may cause unstable operation of the crushing roller, resulting in violent shaking and abnormal vibration, exacerbating mechanical wear and shortening the equipment's service life, threatening the safety and reliability of road construction operations and reducing the working stability of the waste concrete pavement in-situ recycling device. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides an on-site recycling device for waste concrete pavement using multiple crushing methods to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an on-site recycling device for waste concrete pavement using multiple crushing methods, comprising a mounting frame, a roller rotatably mounted on the inner side of the mounting frame, multiple barbed serrations fixed on the outer side of the roller, a snap-fit ​​sleeve detachably mounted on the mounting frame, a mounting base detachably mounted on the lower side of the mounting frame, an unlocking sleeve rotatably mounted on the outer side of the snap-fit ​​sleeve, a snap-fit ​​rod detachably mounted on the inner side of the snap-fit ​​sleeve, multiple mating grooves on one side of the unlocking sleeve, multiple mating frames fixed on the outer side of the snap-fit ​​sleeve, a rotating rod rotatably mounted on the inner side of the mating frames, one end of the rotating rod being snapped into the mating groove, a top sleeve mounted on the outer side of the snap-fit ​​sleeve, the inner wall of the top sleeve being movably connected to the outer wall of the snap-fit ​​sleeve via threads, a movable groove being opened on the side wall of the snap-fit ​​sleeve, a snap-fit ​​ball rolling in the movable groove, a push block fixedly connected to one end of the snap-fit ​​rod, a snap-fit ​​groove being opened between the push block and the snap-fit ​​rod, and a variable-diameter groove being opened on the inner side of the unlocking sleeve.

[0006] The present invention is further configured such that a plurality of the barbed serrations are arranged in a spiral shape on the outside of the drum.

[0007] The present invention is further provided that a protective cover is detachably provided on the upper side of the mounting bracket.

[0008] The present invention is further configured such that a transmission wheel is rotatably mounted on one side of the mounting bracket, and a transmission shaft is fixedly connected to one end of the roller. The transmission shaft slides through the mounting base and then passes into the shaft of the transmission wheel. The transmission shaft and the transmission wheel are connected by a keyway and a key block.

[0009] The present invention is further configured such that a connecting frame is detachably provided at the front end of the mounting frame, and a guide wheel and a limit wheel can be installed at the front end of the connecting frame according to actual usage requirements.

[0010] The present invention is further provided with multiple anti-slip strips fixedly provided on the outer sides of both the top sleeve and the unlocking sleeve.

[0011] The present invention is further configured such that the inner wall of the mating groove and both ends of the rotating rod are designed with rounded corners.

[0012] The present invention is further configured such that the movable groove has a concave structure design, and both one end of the top sleeve and one end of the push block adopt a chamfered structure design.

[0013] Compared with the prior art, this utility model provides an on-site recycling device for waste concrete pavement using multiple crushing methods, which has the following beneficial effects: 1. By incorporating components such as snap-fit ​​sleeves, snap-fit ​​rods, unlocking sleeves, snap-fit ​​balls, and push blocks, the device enables tool-free and convenient disassembly and assembly of rollers with barbed serrations on the outside. This structural design allows construction workers to easily disassemble, replace, or maintain the crushing rollers without the need for specialized tools such as wrenches, sockets, or pry bars. This effectively avoids problems such as incompatible tool models, incomplete tool types, or damaged or lost tools on the construction site, which can prevent timely disassembly, maintenance, or even replacement of the crushing rollers. It shortens equipment downtime, improves construction efficiency, avoids delays in road construction, and ensures on-time project completion. At the same time, it reduces additional expenses for labor and machinery operating costs, lowers the overall construction cost, and enhances the rapid response capability and ease of maintenance of the waste concrete pavement recycling device on the construction site.

[0014] 2. By setting up components such as rotating rods, mating frames, mating grooves, and top sleeves, a reliable locking function is achieved after the roller is installed. This structure effectively resists the vibration and impact generated during equipment operation, the repeated impact of concrete blocks during crushing operations, the lateral force generated by the entanglement and pulling of the steel reinforcement skeleton in the road surface, the inertial impact load caused by frequent start-stop of the equipment, and other external force factors under complex working conditions at the construction site. It avoids dangerous situations such as the fixed components of the originally installed and fixed crushing roller fixing structure accidentally loosening and displacing, the locking mechanism failing and slipping, or even the crushing roller accidentally unlocking and falling off. It effectively prevents the rotating crushing roller from suddenly falling off and flying out, injuring construction workers or damaging surrounding construction equipment, causing serious safety accidents. It also avoids the problem of unstable operation of the crushing roller due to loose fixing structure, resulting in violent shaking and abnormal vibration, which aggravates mechanical wear and shortens the service life of the equipment. It improves the safety and reliability of road construction operations and the working stability of the waste concrete pavement on-site recycling device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an on-site recycling device for waste concrete pavement using multiple crushing methods according to this utility model. Figure 2 This is a schematic diagram of the overall structure from a second perspective in this utility model; Figure 3 This is a cross-sectional view of the snap-fit ​​sleeve, top sleeve, unlocking sleeve, and snap-fit ​​rod in this utility model. Figure 4 This is a schematic diagram of the structure of the snap-fit ​​sleeve, top sleeve, unlocking sleeve and snap-fit ​​rod in this utility model; Figure 5 This is a schematic diagram of the dispersed structure of the locking rod, locking sleeve, locking ball, unlocking sleeve, and top sleeve in this utility model.

[0016] In the diagram: 1. Mounting bracket; 2. Roller; 3. Barbed serrations; 4. Snap-fit ​​sleeve; 5. Mounting base; 6. Unlocking sleeve; 7. Snap-fit ​​rod; 8. Mating groove; 9. Mating bracket; 10. Rotating rod; 11. Top sleeve; 12. Movable groove; 13. Snap-fit ​​ball; 14. Push block; 15. Snap-fit ​​groove; 16. Variable diameter groove; 17. Protective cover; 18. Drive wheel; 19. Drive shaft; 20. Connecting bracket; 21. Anti-slip strip. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0020] Please see Figures 1-5 A device for on-site recycling of waste concrete pavement using multiple crushing methods includes a mounting frame 1, a roller 2 rotatably mounted inside the mounting frame 1, multiple barbed serrations 3 fixedly mounted on the outer side of the roller 2, a snap-fit ​​sleeve 4 detachably mounted on the mounting frame 1, a mounting base 5 detachably mounted on the lower side of the mounting frame 1, an unlocking sleeve 6 rotatably mounted on the outer side of the snap-fit ​​sleeve 4, a snap-fit ​​rod 7 detachably mounted inside the snap-fit ​​sleeve 4, multiple mating grooves 8 on one side of the unlocking sleeve 6, multiple mating frames 9 fixedly mounted on the outer side of the snap-fit ​​sleeve 4, a rotating rod 10 rotatably mounted inside the mating frame 9, one end of the rotating rod 10 being snapped into the mating groove 8, a top sleeve 11 mounted on the outer side of the snap-fit ​​sleeve 4, the inner wall of the top sleeve 11 being movably connected to the outer wall of the snap-fit ​​sleeve 4 via threads, a movable groove 12 on the side wall of the snap-fit ​​sleeve 4, a snap-fit ​​ball 13 rolling in the movable groove 12, a push block 14 fixedly connected to one end of the snap-fit ​​rod 7, a snap-fit ​​groove 15 between the push block 14 and the snap-fit ​​rod 7, and a variable diameter groove 16 on the inner side of the unlocking sleeve 6.

[0021] Multiple barbed serrations 3 are arranged in a spiral pattern on the outside of the roller 2.

[0022] The mounting bracket 1 is equipped with a detachable protective cover 17 on its upper side.

[0023] A drive wheel 18 is rotatably mounted on one side of the mounting bracket 1, and a drive shaft 19 is fixedly connected to one end of the roller 2. The drive shaft 19 slides through the mounting base 5 and then passes into the shaft of the drive wheel 18. The drive shaft 19 and the drive wheel 18 are connected by a keyway and a key block.

[0024] The mounting bracket 1 is detachably equipped with a connecting bracket 20 at its front end. The connecting bracket 20 can be fitted with guide wheels and limit wheels at its front end according to actual usage requirements.

[0025] In this embodiment, when it is necessary to disassemble the roller 2 with barbed serrations 3 installed on the outside, firstly, rotate the top sleeve 11 forward, so that the top sleeve 11 moves along the thread of the outer wall of the snap-fit ​​sleeve 4, so that the top sleeve 11 gradually stops limiting one end of the rotating rod 10. Then, rotate the unlocking sleeve 6 forward, and the unlocking sleeve 6 will drive the multiple mating grooves 8 opened on one side to rotate. Then, the inner wall of the mating groove 8 will press one end of the rotating rod 10. Due to the rounded corner design of the inner wall of the mating groove 8 and the end of the rotating rod 10, as well as the rotational connection between the rotating rod 10 and the mating frame 9, the mating groove 8 will squeeze one end of the rotating rod 10 out, so that the rotating rod 10 rotates in the mating frame 9, and the other end of the rotating rod 10 rotates inward. At the same time, the unlocking sleeve 6 will drive the variable diameter groove 16 opened on the inner side to rotate forward, so that the wider side of the inner wall of the variable diameter groove 16 corresponds to the position of the snap-fit ​​ball 13. Then, pull the snap-fit ​​sleeve 4 to one side, causing the snap-fit ​​sleeve 4 to move the snap-fit ​​ball 13 and the unlocking sleeve 6, etc. Then, the inner wall of the snap-fit ​​groove 15 presses against the outer wall of the snap-fit ​​ball 13, causing the snap-fit ​​ball 13 to roll outward along the movable groove 12, so that part of the snap-fit ​​ball 13 rolls into the diameter-changing groove 16. At this time, the snap-fit ​​ball 13 completely disengages from the snap-fit ​​groove 15, thereby removing the snap-fit ​​sleeve 4. Then, pull the snap-fit ​​rod 7 downward to remove the snap-fit ​​rod 7. Then, follow the above steps to remove the other snap-fit ​​sleeves 4 and snap-fit ​​rods 7. Then, slide the roller 2 and the mounting seat 5 away from the transmission wheel 18, so that the transmission shaft 19 set at one end of the roller 2 is pulled out from the inside of the transmission wheel 18. Then, move the two mounting seats 5 to the sides respectively, so that the mounting seats 5 and the roller 2 are separated, thereby completely removing the roller 2.

[0026] Please see Figures 3-5 As a further implementation of the overall device: multiple anti-slip strips 21 are fixedly provided on the outer sides of both the top sleeve 11 and the unlocking sleeve 6.

[0027] The inner wall of the mating groove 8 and both ends of the rotating rod 10 are designed with rounded corners.

[0028] The movable groove 12 has a concave structure design, and both one end of the top sleeve 11 and one end of the push block 14 adopt a chamfered structure design.

[0029] More specifically, when installing the roller 2, first, the roller 2 passes through two mounting seats 5 at both ends. Then, the drive shaft 19 connected to one end of the roller 2 passes through the shaft of the drive wheel 18, and the drive shaft 19 and the drive wheel 18 are connected by a keyway and a key block. Then, the mounting seat 5 is fitted against the mounting bracket 1, and the pre-drilled mounting holes on the mounting seat 5 and the mounting bracket 1 are concentrically aligned. Then, the snap-fit ​​rod 7 passes through the pre-drilled mounting holes on the mounting seat 5 and the mounting bracket 1 from the bottom. Then, the snap-fit ​​sleeve 4 is fitted from the top of the mounting bracket 1 to the outside of the snap-fit ​​rod 7. Since the snap-fit ​​ball 13 may roll inward unexpectedly, the snap-fit ​​ball 13 moves inward along the movable groove 12. Lateral rolling causes a portion of the locking ball 13 to accidentally enter the inner side of the locking sleeve 4. Due to the concave structure design of the movable groove 12, the locking ball 13 will not fall from the inner side of the movable groove 12 into the inner side of the locking sleeve 4. During the fitting process, the chamfered structure at one end of the push block 14 will push the portion of the locking ball 13 that accidentally entered the locking sleeve 4 outward, causing the locking ball 13 to roll outward. This allows a portion of the locking ball 13 to enter the wider part of the reducing groove 16. After the locking sleeve 4 is fully fitted onto the outer side of the locking rod 7, the unlocking sleeve 6 is rotated in the opposite direction. This causes the unlocking sleeve 6 to drive the multiple mating grooves 8 on one side to rotate in the opposite direction. At the same time, the unlocking sleeve 6 will drive the inner... The variable diameter groove 16, which is opened on the side, rotates in the opposite direction, causing the inner wall of the variable diameter groove 16 to gradually press against the outer wall of the locking ball 13. This causes the locking ball 13 to gradually roll inward along the movable groove 12. Then, a part of the locking ball 13 will be locked into the locking groove 15. When the locking relationship is fully formed, the unlocking sleeve 6 just drives the mating groove 8 to rotate and reset completely. At this time, the mating groove 8 rotates to the position corresponding to the original rotating rod 10. Then, the top sleeve 11 rotates in the opposite direction, causing the top sleeve 11 to move in the opposite direction along the thread on the outer wall of the locking sleeve 4 and reset. Due to the chamfer design at one end of the top sleeve 11 and the rounded corner design at the end of the rotating rod 10, the top sleeve 11 will gradually rotate... One end of rod 10 is pushed outward, and then rod 10 will rotate in the opposite direction in the mating frame 9 to reset, so that the other end of rod 10 is re-engaged into the original mating groove 8. Then the rotation of top sleeve 11 stops. At this time, top sleeve 11, rod 10, mating frame 9 and mating groove 8 work together to form a rotation limit on unlocking sleeve 6, preventing unlocking sleeve 6 from rotating accidentally, thereby preventing the fixed structure from loosening or even falling off, and realizing the stable installation of roller 2. Since the waste concrete pavement recycling device with multiple crushing methods is a mature technology, the overall structure of the equipment will not be shown, and the overall operating principle of the equipment will not be described in detail.

[0030] In summary, during the use or operation of the overall equipment: when it is necessary to disassemble the roller 2 with barbed serrations 3 installed on the outside, first rotate the top sleeve 11 forward, so that the top sleeve 11 moves along the thread on the outer wall of the snap-fit ​​sleeve 4, so that the top sleeve 11 gradually stops limiting one end of the rotating rod 10. Then rotate the unlocking sleeve 6 forward, which will drive the multiple mating grooves 8 opened on one side to rotate. Then the inner wall of the mating groove 8 squeezes one end of the rotating rod 10. Due to the rounded corner design of the inner wall of the mating groove 8 and the end of the rotating rod 10, as well as the rotational connection between the rotating rod 10 and the mating frame 9, the mating groove 8 will squeeze one end of the rotating rod 10 out, so that the rotating rod 10 rotates in the mating frame 9, and the other end of the rotating rod 10 rotates inward. At the same time, the unlocking sleeve 6 will drive the variable diameter groove 16 opened on the inner side to rotate forward, so that the wider side of the inner wall of the variable diameter groove 16 engages with the snap-fit ​​ball 13. First, position the corresponding parts, then pull the snap-fit ​​sleeve 4 to one side, causing the snap-fit ​​sleeve 4 to move the snap-fit ​​ball 13 and the unlocking sleeve 6, etc. Then, the inner wall of the snap-fit ​​groove 15 presses against the outer wall of the snap-fit ​​ball 13, causing the snap-fit ​​ball 13 to roll outward along the movable groove 12, so that part of the snap-fit ​​ball 13 rolls into the diameter-changing groove 16. At this time, the snap-fit ​​ball 13 completely disengages from the snap-fit ​​groove 15, thereby removing the snap-fit ​​sleeve 4. Then, pull the snap-fit ​​rod 7 downward to remove the snap-fit ​​rod 7. Then, follow the above steps to remove the other snap-fit ​​sleeves 4 and snap-fit ​​rods 7. Then, slide the roller 2 and the mounting seat 5 away from the transmission wheel 18, so that the transmission shaft 19 set at one end of the roller 2 is pulled out from the inside of the transmission wheel 18. Then, move the two mounting seats 5 to the sides respectively, so that the mounting seats 5 and the roller 2 are separated, thereby completely removing the roller 2.

[0031] When installing the roller 2, first, pass the roller 2 through the two mounting seats 5 at both ends. Then, insert the drive shaft 19 connected to one end of the roller 2 into the shaft of the drive wheel 18, and connect the drive shaft 19 and the drive wheel 18 through a keyway and key block. Next, fit the mounting seat 5 against the mounting bracket 1, and align the pre-drilled mounting holes on the mounting seat 5 and the mounting bracket 1 concentrically. Then, pass the snap-fit ​​rod 7 from below through the pre-drilled mounting holes on the mounting seat 5 and the mounting bracket 1. Finally, slip the snap-fit ​​sleeve 4 from the top of the mounting bracket 1 onto the outside of the snap-fit ​​rod 7. Since the snap-fit ​​ball 13 may accidentally roll inward, allow the snap-fit ​​ball 13 to roll inward along the movable groove 12. This causes a portion of the locking ball 13 to accidentally enter the inner side of the locking sleeve 4. Due to the concave structure design of the movable groove 12, the locking ball 13 will not fall from the inner side of the movable groove 12 into the inner side of the locking sleeve 4. During the fitting process, the chamfered structure at one end of the push block 14 will push the portion of the locking ball 13 that accidentally entered the locking sleeve 4 outward, causing the locking ball 13 to roll outward. This allows a portion of the locking ball 13 to enter the wider part of the diameter-changing groove 16. After the locking sleeve 4 is fully fitted onto the outer side of the locking rod 7, the unlocking sleeve 6 is rotated in the opposite direction. This causes the unlocking sleeve 6 to drive the multiple mating grooves 8 on one side to rotate in the opposite direction. At the same time, the unlocking sleeve 6 will drive the inner diameter-changing groove. The variable diameter groove 16 is rotated in the opposite direction, causing the inner wall of the variable diameter groove 16 to gradually press against the outer wall of the locking ball 13. This causes the locking ball 13 to gradually roll inward along the movable groove 12. Then, a portion of the locking ball 13 will be locked into the locking groove 15. When a complete locking relationship is formed, the unlocking sleeve 6 will drive the mating groove 8 to rotate and reset completely. At this time, the mating groove 8 will rotate to the position corresponding to the original rotating rod 10. Then, the top sleeve 11 is rotated in the opposite direction, causing the top sleeve 11 to move in the opposite direction along the thread on the outer wall of the locking sleeve 4 and reset. Due to the chamfer design at one end of the top sleeve 11 and the rounded corner design at the end of the rotating rod 10, the top sleeve 11 will gradually push the rotating rod 10 into place. When one end of the 0 is pushed outward, the rotating rod 10 will rotate in the opposite direction and reset in the mating frame 9, so that the other end of the rotating rod 10 is re-engaged into the original mating groove 8. Then the rotation of the top sleeve 11 stops. At this time, the top sleeve 11, the rotating rod 10, the mating frame 9 and the mating groove 8 work together to form a rotation limit on the unlocking sleeve 6, preventing the unlocking sleeve 6 from rotating accidentally, thereby preventing the fixed structure from loosening or even falling off, and realizing the stable installation of the roller 2. Since the waste concrete pavement recycling device using multiple crushing methods is a mature technology, the overall structure of the equipment will not be shown, and the overall operating principle of the equipment will not be described in detail.

[0032] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An on-site recycling device for waste concrete pavement using multiple crushing methods, comprising a mounting frame (1), characterized in that: The mounting bracket (1) has a rotatable roller (2) on its inner side, and multiple barbed serrations (3) fixed on the outer side of the roller (2). The mounting bracket (1) has a detachable snap-fit ​​sleeve (4), and the mounting bracket (1) has a detachable mounting base (5) on its lower side. The snap-fit ​​sleeve (4) has a rotatable unlocking sleeve (6) on its outer side, and a snap-fit ​​rod (7) is detachably provided on the inner side of the snap-fit ​​sleeve (4). The unlocking sleeve (6) has multiple mating grooves (8) on one side, and multiple mating brackets (9) are fixed on the outer side of the snap-fit ​​sleeve (4). The mating brackets (9) have a rotating rod (9) rotatably provided on their inner side. 10), one end of the rotating rod (10) is inserted into the mating groove (8), the outer side of the snap sleeve (4) is provided with a top sleeve (11), the inner wall of the top sleeve (11) is movably connected to the outer wall of the snap sleeve (4) by a thread, the side wall of the snap sleeve (4) is provided with a movable groove (12), the movable groove (12) is provided with a snap ball (13) rolling in the movable groove (12), one end of the snap rod (7) is fixedly connected with a push block (14), the push block (14) and the snap rod (7) are provided with a snap groove (15), the inner side of the unlocking sleeve (6) is provided with a variable diameter groove (16).

2. The on-site recycling device for waste concrete pavement using multiple crushing methods as described in claim 1, characterized in that: Multiple barbed serrations (3) are arranged in a spiral shape on the outside of the roller (2).

3. The on-site recycling device for waste concrete pavement using multiple crushing methods as described in claim 2, characterized in that: The mounting bracket (1) is detachably equipped with a protective cover (17) on its upper side.

4. The on-site recycling device for waste concrete pavement using multiple crushing methods as described in claim 3, characterized in that: The mounting bracket (1) has a drive wheel (18) rotatably mounted on one side, and a drive shaft (19) is fixedly connected to one end of the roller (2). The drive shaft (19) slides through the mounting base (5) and then passes into the shaft of the drive wheel (18). The drive shaft (19) and the drive wheel (18) are connected by a keyway and a key block.

5. A waste concrete pavement on-site recycling device employing multiple crushing methods as described in claim 4, characterized in that: The mounting bracket (1) has a detachable connecting bracket (20) at its front end.

6. A waste concrete pavement in-situ recycling device employing multiple crushing methods according to any one of claims 1-5, characterized in that: Multiple anti-slip strips (21) are fixedly provided on the outer sides of both the top sleeve (11) and the unlocking sleeve (6).

7. The on-site recycling device for waste concrete pavement using multiple crushing methods according to claim 1, characterized in that: The inner wall of the mating groove (8) and both ends of the rotating rod (10) are designed with rounded corners.

8. The on-site recycling device for waste concrete pavement using multiple crushing methods according to claim 1, characterized in that: The movable groove (12) is a concave structure design, and one end of the top sleeve (11) and one end of the push block (14) are both designed with chamfered structure.

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