A device for crushing and recycling construction waste concrete waste and its use method

Abstract

The present invention relates to the field of concrete recycling technology, specifically to a device for crushing and recycling construction waste concrete and a method for using the same, comprising a housing, wherein the housing is configured as a horizontal tubular structure. The device for crushing and recycling construction waste concrete and a method for using the same, divide the concrete in the housing into two parts that rotate in opposite directions, and rub against each other through the synchronous phase rotation of the concrete contacted by the turntables on both sides. The ground fragments leak out along the sieve opening, and since the arc cover and the turntable advance synchronously, the shifted arc cover blocks the opening at the bottom of the material hopper, preventing concrete from entering the non-processing area during the crushing process. Compared with traditional crushers that directly use hammers to crush concrete, the turntable does not directly collide with the concrete, but is statically connected to the concrete through pressure, driving the concrete to collide and rub against each other, thereby reducing the rate of wear and damage of the workpiece and extending the service life of the crushing and recycling equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete recycling, in particular to a device for crushing and recycling construction waste concrete and a method for using the same. Background Art

[0002] During the use of concrete, some waste materials will remain. These waste materials need to be crushed and recycled for secondary use. Recycled concrete is currently widely used in foundation reinforcement and road engineering. The concrete from the disintegration of old buildings or structures is crushed and graded into coarse and fine aggregates, which are used to replace some of the sand and gravel in concrete. This concrete is called recycled aggregate concrete, also known as recycled concrete. Judging from the compressive strength of recycled concrete, it can fully meet the requirements of engineering construction.

[0003] The existing patent (publication number: CN113952997A) discloses a construction concrete waste crushing and recycling device. It is necessary to design a construction concrete waste crushing and recycling device that can replace people to crush concrete waste, save time and labor, has high work efficiency, and is convenient to heat. The technical implementation scheme of the invention is: a construction concrete waste crushing and recycling device, including: a base plate, on which foot pads are spaced apart; a pressing cylinder, which is installed on the base plate; and a hydraulic device, which is installed between the pressing cylinder and the base plate for crushing. In the present invention, with the cooperation of the hydraulic device and the discharging device, the hydraulic press is connected to the external oil pipe, an appropriate amount of waste is placed in the pressing cylinder, and the hydraulic oil is discharged into the hydraulic press, so that the pressing block moves downward to crush the waste. When the above-mentioned crushing equipment is used, it only crushes the concrete, and the steel bars mixed in the concrete need to be separated separately, which is not convenient to use, and the bent steel bars cannot be quickly recycled and used, and are not convenient to store.

[0004] In view of this, we propose a device for crushing and recycling construction waste concrete waste and a method for using the same. Summary of the Invention

[0005] The present invention aims to provide a device for crushing and recycling construction waste concrete and its use method, so as to address the problems mentioned in the background art above, namely that existing equipment only crushes concrete, requiring separate separation of steel bars embedded in the concrete, resulting in inconvenient use, and the inability to quickly recycle and store bent steel bars. To achieve the above-mentioned objectives, the present invention provides the following technical solution: a device for crushing and recycling construction waste concrete, comprising a housing, the housing being a horizontally disposed tubular structure, a material hopper being disposed at the center of the top of the housing, a grinder being disposed within the housing to cooperate with the material hopper, and a sieve opening being provided at the center of the bottom of the material hopper.

[0006] The sieve opening is composed of a plurality of strip-shaped through grooves in a single row array.

[0007] Preferably, the grinder comprises two arc covers movably arranged in the outer shell, and the two arc covers are symmetrically arranged with the material hopper as the midpoint.

[0008] Sliders are fixedly connected to the front and rear sides of the arc cover surface, and sliding grooves corresponding to the slides are opened on the front and rear sides of the inner wall of the shell. The arc cover moves left and right along the sliding grooves through the sliders.

[0009] A mounting platform corresponding to the arc cover is provided on the inner side wall of the shell, and a cylinder is fixedly installed on the mounting platform, and the telescopic end of the cylinder is fixedly connected to the surface of the arc cover.

[0010] The inside of the two arc covers are fixed with motors through brackets, and the motors on both sides are symmetrically arranged. A transmission shaft is rotatably connected inside the bracket, one end of the transmission shaft is fixedly connected to the rotating shaft of the motor, and a turntable is provided at the remaining end of the transmission shaft.

[0011] The turntable and the transmission shaft are connected via a stone mechanism.

[0012] The disk surface of the rotating disk extends out along the end edge of the arc cover.

[0013] Preferably, the stone-locking mechanism includes a movable platform arranged in the arc cover, and the movable platform is fixedly connected to the transmission shaft.

[0014] The turntable is radially slidably connected along the movable table, and a plurality of top drills are fixedly connected to the side of the movable table surface opposite to the turntable. A plurality of drill holes corresponding to the top drills are opened on the surface of the turntable. A spring is movably sleeved on the top drill, and the spring pushes the turntable to slide outward with the movable table as the base point.

[0015] An orthosis matched with the top drill is arranged on one side of the turntable surface opposite to the movable platform.

[0016] Preferably, the orthosis includes a circular groove formed on the surface of the rotating disk, and an inner disk is rotatably connected in the circular groove, and a through hole for the top drill to pass through is formed on the surface of the inner disk.

[0017] A plurality of side grooves are provided at the outer edge of the inner disk, and a limiting edge corresponding to the side groove is fixedly connected to the inner edge of the circular groove. The limiting edge is slidably engaged in the side groove, and a tension spring is provided in the side groove, and the two ends of the tension spring are respectively connected to the surface of the limiting edge and the groove wall of the side groove.

[0018] The surface of the turntable is provided with a plurality of fan grooves, and the plurality of fan grooves are arranged in a circular equidistant array. The surface of the inner disk is fixedly provided with a plurality of fan blocks corresponding to the fan grooves, and the fan blocks are located in the fan grooves. The gap area between the fan grooves and the fan blocks is set as an extrusion area.

[0019] A groove is provided on a groove wall on one side of the fan groove opposite to the extrusion zone, and a protrusion corresponding to the groove is provided on a surface on one side of the fan block opposite to the extrusion zone.

[0020] The outer ring of the rotating disk is provided with a notch which is communicated with the groove.

[0021] Preferably, the mounting platforms and cylinders are provided in two groups, and the two mounting platforms and cylinders in a single group are symmetrically arranged along the front and rear sides of a single arc cover.

[0022] Preferably, a circular opening corresponding to the spring is coaxially opened on the surface of the inner disk along the through hole, and both ends of the spring are respectively connected to the circular opening and the movable platform.

[0023] Preferably, the fan blocks are fixed to the inner disk surface by bolts.

[0024] A method for using a construction waste concrete crushing and recycling device comprises the following steps:

[0025] S1. Put the concrete waste into the shell through the material hopper, crush it through the grinder, and then discharge it through the sieve for recycling;

[0026] S2. After the concrete waste enters the shell, the cylinders on both sides are started to push the two arc covers to move relative to each other along the chute. The motor and the turntable inside the arc cover move synchronously, and the two turntables are pressed against the concrete waste in the shell. The motor is started along the transmission shaft to drive the corresponding turntables to rotate in opposite directions. The concrete contacted by the turntables on both sides rotate synchronously in opposite directions, so that the concrete in the shell is divided into two parts rotating in opposite directions. The concrete rubs against each other, and the ground fragments leak out along the sieve. In addition, since the arc cover and the turntable move synchronously, the shifted arc cover blocks the opening at the bottom of the material hopper, preventing the concrete from entering the non-processing area during the crushing process.

[0027] S3. When the turntable is pressed against the surface of the concrete block, the arc cover and the movable platform are controlled to continuously advance, so that the movable platform ejects the top drill from the drill hole on the turntable and drives it into the concrete block, thereby connecting the turntable and the concrete block with the top drill. At the same time, when the arc cover and the movable platform move back, the spring on the top drill pushes the turntable to slide outward, so that the top drill is received in the drill hole, and the concrete remaining on the top drill is peeled off along the turntable surface;

[0028] S4. After the turntable drives the concrete to grind and discharge each other, the steel bars peeled off from the concrete are trapped between the two turntables and are pushed into the extrusion area of the fan groove as the turntable rotates. The control cylinder drives the arc cover and the movable table to move back slightly, so that the top drill is recovered to the through hole of the inner disk. At this time, the rotating movable table drives the inner disk to rotate through the top drill. During this process, the fan blocks on the inner disk squeeze the steel bars along the fan grooves, pressing the steel bars into the grooves, and using the convex blocks to squeeze the steel bars, thereby straightening and shaping the steel bars along the grooves. As the motor speed is reduced, the tension spring pulls the turntable to rotate along the inner disk to loosen the steel bars. The low-speed rotation of the turntable causes the straightened steel bars to slide out along the notch and be discharged along the sieve mouth.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] In the present invention, by driving the corresponding turntables to rotate in opposite directions respectively, the concrete contacted by the turntables on both sides rotate synchronously in opposite directions, so that the concrete in the outer shell is divided into two parts rotating in both directions, and rubs against each other, and the ground fragments leak out along the sieve mouth. In addition, since the arc cover and the turntable advance synchronously, the shifted arc cover blocks the opening at the bottom of the material hopper to prevent the concrete from entering the non-processing area during the crushing process. Compared with the traditional crusher that directly uses a hammer to crush the concrete, the above-mentioned turntable does not directly collide with the concrete, but is statically connected to the concrete through pressure, driving the collision and friction between the concrete, reducing the rate of wear and damage of the workpiece and extending the service life of the crushing and recovery equipment.

[0031] In the present invention, the arc cover and the movable platform are controlled to continuously advance, so that the movable platform pops out the top drill from the drill hole on the turntable and nails it into the concrete block, thereby connecting the turntable and the concrete block by using the top drill, avoiding slipping during driving after the turntable and the concrete are pressed, and reverse wear of the turntable. At the same time, when the arc cover and the movable platform move back, the spring on the top drill pushes the turntable to slide outward, so that the top drill is retracted into the drill hole, and the concrete remaining on the top drill is peeled off along the turntable surface, avoiding the concrete block from getting stuck on the turntable surface, ensuring that the turntable surface is left empty, and the top drill can be inserted into the subsequent concrete block.

[0032] In the present invention, the steel bars stripped from the concrete are clamped between the two turntables and are pushed into the extrusion area of the fan groove as the turntable rotates. The control cylinder drives the arc cover and the movable platform to move back slightly, so that the top drill is recovered into the through hole of the inner disk. At this time, the rotating movable platform drives the inner disk to rotate through the top drill. In this process, the fan blocks on the inner disk squeeze the steel bars along the fan grooves, press the steel bars into the grooves, and use the protrusions to squeeze the steel bars, so as to straighten and shape the steel bars along the grooves. As the motor speed is reduced, the tension spring pulls the turntable to rotate along the inner disk to loosen the steel bars. The low-speed rotating turntable causes the straightened steel bars to slide out along the notch and be discharged along the sieve mouth. Compared with traditional crushing equipment, the above-mentioned turntable can separately store the steel bars stripped from the concrete blocks and straighten and shape them, which is convenient for users to quickly recycle and use. The steel bars and concrete blocks are discharged in batches, and there is no need for users to screen them separately, which is further convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0034] Figure 2 It is a sectional view of the three-dimensional structure of the present invention;

[0035] Figure 3 An exploded view of the present invention;

[0036] Figure 4 It is a front cross-sectional view of the present invention;

[0037] Figure 5 Schematic diagram of the three-dimensional structure of the extrusion surface of the turntable in the present invention;

[0038] Figure 6 It is a front view of the motor, movable platform and turntable in the present invention;

[0039] Figure 7 An exploded view of the movable table and turntable of the present invention;

[0040] Figure 8 This is a structural diagram of the inner disk being installed along the turntable of the present invention;

[0041] Figure 9 This is an exploded view of the inner disk and the turntable of the present invention;

[0042] Figure 10 It is an exploded view of the top drill, inner plate and turntable of the present invention.

[0043] In the figure: 1. outer shell; 2. material hopper; 3. grinder; 31. arc cover; 32. slider; 33. slide; 34. mounting table; 35. cylinder; 36. bracket; 37. motor; 38. transmission shaft; 39. turntable; 310. stone clamping mechanism; 3101. movable table; 3102. top drill; 3103. drill hole; 3104. spring; 3105. orthosis; 31051. circular groove; 31052. inner plate; 31053. through hole; 31054. side groove; 31055. limiting edge; 31056. tension spring; 31057. fan groove; 31058. fan block; 31059. extrusion area; 310510. groove; 310511. protrusion; 310512. notch; 4. sieve mouth. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technical personnel in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] See also Figures 1 to 10 The present invention provides a technical solution: a device for crushing and recycling construction waste concrete, comprising a housing 1, the housing 1 being a horizontally placed tubular structure, a material hopper 2 being provided at the center of the top of the housing 1, a grinder 3 cooperating with the material hopper 2 being provided inside the housing 1, and a sieve opening 4 being provided at the center of the bottom of the material hopper 2. When in use, concrete waste is put into the housing 1 through the material hopper 2, crushed by the grinder 3, and then discharged through the sieve opening 4 for recycling;

[0046] The sieve opening 4 is composed of a plurality of strip-shaped through grooves in a single row array.

[0047] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, the grinder 3 includes two arc covers 31 movably arranged in the housing 1, and the two arc covers 31 are symmetrically arranged with the material hopper 2 as the midpoint;

[0048] Slide blocks 32 are fixedly connected to the front and rear sides of the arc cover 31. Slide blocks 33 corresponding to the slide blocks 32 are opened on the front and rear sides of the inner wall of the shell 1. The arc cover 31 moves left and right along the slide blocks 33 through the slide blocks 32.

[0049] A mounting platform 34 corresponding to the arc cover 31 is provided on the inner side wall of the housing 1, and a cylinder 35 is fixedly mounted on the mounting platform 34, and the telescopic end of the cylinder 35 is fixedly connected to the surface of the arc cover 31;

[0050] Motors 37 are fixedly installed inside the two arc covers 31 through brackets 36. The motors 37 on both sides are symmetrically arranged. A transmission shaft 38 is rotatably connected inside the bracket 36. One end of the transmission shaft 38 is fixedly connected to the rotating shaft of the motor 37, and a turntable 39 is provided at the remaining end of the transmission shaft 38. The cylinders 35 on both sides push the two arc covers 31 to move relative to each other along the slide 33. The motors 37 and turntables 39 inside the arc covers 31 move synchronously, and the two turntables 39 are relatively pressed against the concrete waste in the shell 1.

[0051] The turntable 39 and the transmission shaft 38 are connected via a stone mechanism 310;

[0052] The surface of the turntable 39 extends along the end edge of the arc cover 31, and the motor 37 drives the corresponding turntable 39 along the transmission shaft 38 to rotate in opposite directions. The concrete contacted by the turntables 39 on both sides rotates synchronously in opposite directions, so that the concrete in the shell 1 is divided into two parts rotating in opposite directions, and the concrete rubs against each other, and the ground fragments leak out along the sieve mouth 4.

[0053] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, the stone mechanism 310 includes a movable platform 3101 disposed in the arc cover 31, and the movable platform 3101 is fixedly connected to the transmission shaft 38;

[0054] The turntable 39 is radially slidably connected along the movable platform 3101, and a plurality of top drills 3102 are fixedly connected to the side of the movable platform 3101 opposite to the turntable 39. A plurality of drill holes 3103 corresponding to the top drills 3102 are opened on the surface of the turntable 39. A spring 3104 is movably sleeved on the top drill 3102, and the spring 3104 pushes the turntable 39 to slide outward with the movable platform 3101 as the base point. When the turntable 39 is pressed against the surface of the concrete block, the control arc cover 31 and the movable platform 3101 are continuously advanced, so that the movable platform 3101 ejects the top drill 3102 from the drill hole 3103 on the turntable 39 and nails it into the concrete block. When the arc cover 31 and the movable platform 3101 move back, the spring 3104 on the top drill 3102 pushes the turntable 39 to slide outward, so that the top drill 3102 is received in the drill hole 3103.

[0055] An orthosis 3105 that cooperates with the top drill 3102 is provided on the side of the turntable 39 opposite to the movable platform 3101.

[0056] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10As shown, the orthosis 3105 includes a circular groove 31051 formed on the surface of the rotating disk 39, and an inner disk 31052 is rotatably connected in the circular groove 31051. The inner disk 31052 has a through hole 31053 formed on the surface thereof for the top drill 3102 to pass through.

[0057] A plurality of side grooves 31054 are formed on the outer edge of the inner disk 31052. A limiting edge 31055 corresponding to the side groove 31054 is fixedly connected to the inner edge of the circular groove 31051. The limiting edge 31055 slides and engages in the side groove 31054. A tension spring 31056 is provided in the side groove 31054. The ends of the tension spring 31056 are respectively connected to the surface of the limiting edge 31055 and the groove wall of the side groove 31054.

[0058] The surface of the rotating disk 39 is provided with a plurality of sector grooves 31057 arranged in a circular array with equal spacing. The surface of the inner disk 31052 is fixedly provided with a plurality of sector blocks 31058 corresponding to the sector grooves 31057. The sector blocks 31058 are located within the sector grooves 31057. The gap between the sector grooves 31057 and the sector blocks 31058 is defined as an extrusion zone 31059.

[0059] A groove 310510 is formed on the groove wall of the fan groove 31057 on one side opposite to the extrusion zone 31059, and a protrusion 310511 corresponding to the groove 310510 is provided on the surface of the fan block 31058 on the side opposite to the extrusion zone 31059. The steel bars peeled off from the concrete are trapped between the two turntables 39 and are pushed into the extrusion zone 31059 of the fan groove 31057 as the turntable 39 rotates. The control cylinder 35 drives the arc cover 31 and the movable platform 3101 to move back slightly, so that the top drill 3102 is recovered into the through hole 31053 of the inner disk 31052. At this time, the rotating movable platform 3101 drives the inner disk 31052 to rotate through the top drill 3102. During this process, the fan block 31058 on the inner disk 31052 squeezes the steel bars along the fan groove 31057, presses the steel bars into the groove 310510, and uses the protrusion 310511 to squeeze the steel bars.

[0060] The outer ring of the turntable 39 is provided with a notch 310512 connected to the groove 310510. The rotation speed of the motor 37 is reduced, and the tension spring 31056 pulls the turntable 39 to rotate along the inner disk 31052 to loosen the steel bars. The low-speed rotation of the turntable 39 causes the straightened steel bars to slide out along the notch 310512 and be discharged along the sieve mouth 4.

[0061] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10As shown, two groups of mounting platforms 34 and cylinders 35 are provided, and a single group of two mounting platforms 34 and cylinders 35 are symmetrically arranged along the front and rear sides of a single arc cover 31. The cylinders 35 on the front and rear sides synchronously push the arc cover 31 to move left and right, avoiding unilateral push that causes the arc cover 31 to deflect and get stuck, thereby ensuring smooth operation.

[0062] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, a circular opening corresponding to the spring 3104 is coaxially opened along the through hole 31053 on the surface of the inner disk 31052, and the two ends of the spring 3104 are respectively connected to the circular opening and the movable platform 3101. When the movable platform 3101 and the turntable 39 are relatively closed, the spring 3104 will be pressed into the circular opening to avoid the spring 3104 being crushed.

[0063] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, the fan block 31058 is fixed to the surface of the inner disk 31052 by bolts. The fan block 31058 can be quickly disassembled and assembled by the bolts, which makes it convenient for the user to inspect and repair the fan block 31058 and replace the worn fan block 31058.

[0064] A method for using a construction waste concrete crushing and recycling device comprises the following steps:

[0065] S1, concrete waste is put into the housing 1 through the material hopper 2, crushed by the grinder 3, and discharged through the sieve 4 for recycling;

[0066] S2. After the concrete waste enters the shell 1, the cylinders 35 on both sides are started to push the two arc covers 31 to move relative to each other along the slide 33. The motor 37 and the turntable 39 inside the arc cover 31 move synchronously, and the two turntables 39 are relatively pressed on the concrete waste in the shell 1. The motor 37 is started and drives the corresponding turntables 39 along the transmission shaft 38 to rotate in opposite directions. The concrete contacted by the turntables 39 on both sides rotates synchronously in opposite directions, so that the concrete in the shell 1 is divided into two parts rotating in opposite directions, and the concrete rubs against each other. The ground fragments leak out along the sieve mouth 4. In addition, since the arc cover 31 and the turntable 39 move synchronously, the shifted arc cover 31 blocks the opening at the bottom of the material hopper 2 to prevent the concrete from entering the non-processing area during the crushing process.

[0067] S3. When the turntable 39 is pressed against the surface of the concrete block, the arc cover 31 and the movable platform 3101 are controlled to continuously advance, so that the movable platform 3101 ejects the top drill 3102 from the drill hole 3103 on the turntable 39 and drives it into the concrete block, thereby connecting the turntable 39 and the concrete block with the top drill 3102. At the same time, when the arc cover 31 and the movable platform 3101 move back, the spring 3104 on the top drill 3102 pushes the turntable 39 to slide outward, so that the top drill 3102 is received in the drill hole 3103, and the concrete remaining on the top drill 3102 is peeled off along the surface of the turntable 39.

[0068] S4. After the turntable 39 drives the concrete to grind each other and discharge, the steel bars peeled off from the concrete are trapped between the two turntables 39 and are pushed into the extrusion area 31059 of the fan groove 31057 as the turntable 39 rotates. The control cylinder 35 drives the arc cover 31 and the movable platform 3101 to move back slightly, so that the top drill 3102 is recovered to the through hole 31053 of the inner disk 31052. At this time, the rotating movable platform 3101 drives the inner disk 31052 to rotate through the top drill 3102. This process During the process, the fan block 31058 on the inner disk 31052 squeezes the steel bar along the fan groove 31057, presses the steel bar into the groove 310510, and uses the protrusion 310511 to squeeze the steel bar, thereby straightening and shaping the steel bar along the groove 310510. As the speed of the motor 37 is reduced, the tension spring 31056 pulls the turntable 39 to rotate along the inner disk 31052 to loosen the steel bar. The low-speed rotation of the turntable 31052 causes the straightened steel bar to slide out along the notch 310512 and be discharged along the sieve mouth 4.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction waste concrete waste crushing and recycling device, comprising a housing (1), characterized in that: The housing (1) is a horizontally placed tubular structure, and a material hopper (2) is provided at the center of the top of the housing (1). A grinder (3) that matches the material hopper (2) is provided inside the housing (1), and a sieve opening (4) is provided at the center of the bottom of the material hopper (2). The sieve opening (4) is composed of a plurality of strip-shaped through grooves in a single row array; The grinder (3) comprises two arc covers (31) movably arranged in the housing (1), and the two arc covers (31) are symmetrically arranged with the material hopper (2) as the midpoint; Slide blocks (32) are fixedly connected to the front and rear sides of the surface of the arc cover (31), and slide grooves (33) corresponding to the slide blocks (32) are provided on the front and rear sides of the inner wall of the shell (1), and the arc cover (31) moves in the left and right directions along the slide grooves (33) via the slide blocks (32); A mounting platform (34) corresponding to the arc cover (31) is provided on the inner side wall of the housing (1), and a cylinder (35) is fixedly mounted on the mounting platform (34), wherein the telescopic end of the cylinder (35) is fixedly connected to the surface of the arc cover (31); A motor (37) is fixedly installed inside each of the two arc covers (31) via a bracket (36), and the motors (37) on both sides are symmetrically arranged. A transmission shaft (38) is rotatably connected inside the bracket (36), one end of the transmission shaft (38) is fixedly connected to the rotating shaft of the motor (37), and a rotating disk (39) is provided at the remaining end of the transmission shaft (38); The rotating disk (39) and the transmission shaft (38) are connected via a stone clamping mechanism (310); The disk surface of the rotating disk (39) extends out along the end edge of the arc cover (31); The stone clamping mechanism (310) includes a movable platform (3101) disposed within the arc cover (31), and the movable platform (3101) is fixedly connected to the transmission shaft (38); The turntable (39) is radially slidably connected along the movable platform (3101), and a plurality of top drills (3102) are fixedly connected to a side of the movable platform (3101) opposite to the turntable (39), and a plurality of drill holes (3103) corresponding to the top drills (3102) are opened on the surface of the turntable (39). A spring (3104) is movably sleeved on the top drill (3102), and the spring (3104) pushes the turntable (39) to slide outward with the movable platform (3101) as a base point; An orthosis (3105) that cooperates with the top drill (3102) is provided on a side of the surface of the turntable (39) opposite to the movable platform (3101); The orthosis (3105) includes a circular groove (31051) formed on the surface of the rotating disk (39), and an inner disk (31052) is rotatably connected in the circular groove (31051). A through hole (31053) is formed on the surface of the inner disk (31052) for the top drill (3102) to pass through. A plurality of side grooves (31054) are provided at the outer edge of the inner plate (31052); a limiting edge (31055) corresponding to the side groove (31054) is fixedly connected to the inner edge of the circular groove (31051); the limiting edge (31055) is slidably engaged in the side groove (31054); and a tension spring (31056) is provided in the side groove (31054); and the two ends of the tension spring (31056) are respectively connected to the surface of the limiting edge (31055) and the groove wall of the side groove (31054); The surface of the rotating disk (39) is provided with a plurality of fan grooves (31057), and the plurality of fan grooves (31057) are arranged in a circular equidistant array. The surface of the inner disk (31052) is fixedly provided with a plurality of fan blocks (31058) corresponding to the fan grooves (31057), and the fan blocks (31058) are located in the fan grooves (31057). The gap area between the fan grooves (31057) and the fan blocks (31058) is set as an extrusion area (31059); A groove (310510) is provided on the groove wall of the fan groove (31057) on one side opposite to the extrusion zone (31059), and a protrusion (310511) corresponding to the groove (310510) is provided on the surface of the fan block (31058) on one side opposite to the extrusion zone (31059); The outer ring of the rotating disk (39) is provided with a notch (310512) communicating with the groove (310510).

2. The device for crushing and recycling construction waste concrete according to claim 1, characterized in that: The mounting platforms (34) and the cylinders (35) are provided in two groups, and the two mounting platforms (34) and the cylinders (35) in a single group are symmetrically arranged along the front and rear sides of a single arc cover (31).

3. The device for crushing and recycling construction waste concrete according to claim 2, characterized in that: The surface of the inner disk (31052) is coaxially provided with a circular opening corresponding to the spring (3104) along the through hole (31053), and the two ends of the spring (3104) are respectively connected to the circular opening and the movable platform (3101).

4. The device for crushing and recycling construction waste concrete according to claim 3, characterized in that: The fan block (31058) is fixed on the surface of the inner disk (31052) by bolts.

5. The method for using the construction waste concrete crushing and recycling device according to claim 4 comprises the following steps: S1, the concrete waste is put into the housing (1) through the material hopper (2), crushed by the grinder (3), and discharged through the sieve (4) for recycling; S2. After the concrete waste enters the shell (1), the cylinders (35) on both sides are started to push the two arc covers (31) to move relative to each other along the slide (33). The motor (37) and the turntable (39) inside the arc cover (31) move synchronously, and the two turntables (39) are relatively pressed on the concrete waste in the shell (1). The motor (37) is started to drive the corresponding turntables (39) along the transmission shaft (38) to rotate in opposite directions. The concrete contacted by the turntables (39) on both sides rotates in opposite directions synchronously, so that the concrete in the shell (1) is divided into two parts rotating in opposite directions and rubbing against each other. The ground fragments leak out along the sieve (4). Moreover, since the arc cover (31) and the turntable (39) are synchronously advanced, the shifted arc cover (31) blocks the opening at the bottom of the material hopper (2), thereby preventing the concrete from entering the non-processing area during the crushing process. S3. When the turntable (39) is pressed against the surface of the concrete block, the arc cover (31) and the movable platform (3101) are controlled to continuously advance, so that the movable platform (3101) ejects the top drill (3102) from the drill hole (3103) on the turntable (39) and nails it into the concrete block, thereby connecting the turntable (39) and the concrete block using the top drill (3102). At the same time, when the arc cover (31) and the movable platform (3101) are moved back, the spring (3104) on the top drill (3102) pushes the turntable (39) to slide outward, so that the top drill (3102) is received in the drill hole (3103), and the concrete remaining on the top drill (3102) is peeled off along the surface of the turntable (39); S4. After the turntable (39) drives the concrete to grind and discharge each other, the steel bars peeled off from the concrete are trapped between the two turntables (39) and are pushed into the extrusion area (31059) of the fan groove (31057) as the turntable (39) rotates. The control cylinder (35) drives the arc cover (31) and the movable table (3101) to move back slightly, so that the top drill (3102) is recovered into the through hole (31053) of the inner disk (31052). At this time, the rotating movable table (3101) drives the inner disk (31052) to rotate through the top drill (3102). During this process, the fan block (31058) on the inner disk (31052) squeezes the steel bar along the fan groove (31057), presses the steel bar into the groove (310510), and uses the protrusion (310511) to squeeze the steel bar, thereby straightening and shaping the steel bar along the groove (310510). As the speed of the motor (37) is reduced, the tension spring (31056) pulls the turntable (39) to rotate along the inner disk (31052) to loosen the steel bar. The turntable (39) rotates at a low speed, causing the straightened steel bar to slide out along the notch (310512) and be discharged along the sieve opening (4).

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