Construction waste and waste concrete recycled aggregate preparation device

Abstract

The invention relates to the technical field of preparation devices, and discloses a construction waste and waste concrete recycled aggregate preparation device which comprises a mounting frame, a crushing box is fixedly mounted at the top of the mounting frame, and two crushing rollers are rotationally mounted between the inner walls of the two opposite sides of the crushing box. Through rotation of a detection rod, a first piston compresses air at the bottom of a piston cylinder, the compressed air enters a telescopic cylinder, at the moment, enough air pressure jacks up a second piston, the second piston drives a third connecting rod to move through a push rod, and the third connecting rod drives an indication board to vertically move; an operator can directly observe character prompts and is used for determining whether the end parts of the conical teeth are complete or not, the integrity degree of the conical teeth can be detected in real time through the device, the conical teeth can be ensured to effectively crush the waste concrete recycled aggregate into the required particle size, and the productivity and the quality of the waste concrete recycled aggregate are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of preparation devices, and in particular to a preparation device for recycled aggregates from construction waste and discarded concrete. Background Art

[0002] As cities expand, hundreds of millions of tons of waste concrete are generated each year due to demolition, reconstruction, maintenance and repair. If waste concrete is directly piled up or landfilled, it will not only cost a lot of transportation costs, but also cause secondary pollution to the environment. If waste concrete can be refined and recycled, it will not only reduce pollution to the environment and protect the ecological environment, but also save energy and reduce cost consumption.

[0003] The existing construction waste recycled aggregate processing device (publication number: CN110508370A) has at least the following disadvantages:

[0004] When in use, the above patent uses two crushing wheels to reverse each other to crush the concrete waste between them. Since some crushing wheels are composed of multiple conical teeth, the top of the conical teeth is relatively sharp and is easily broken and damaged when encountering harder stones. The above patent does not have a device for real-time detection of the integrity of the conical teeth. If the conical teeth on the crushing wheel are seriously damaged and not detected and replaced in time, the crushing wheel cannot effectively crush the material into the required particle size, thereby affecting the productivity and quality of the recycled aggregate. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a device for preparing recycled aggregate from waste concrete of construction waste.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A device for preparing recycled aggregate from abandoned concrete of construction waste, comprises a mounting frame, a crushing box is fixedly mounted on the top of the mounting frame, two crushing rollers are rotatably mounted between inner walls on opposite sides of the crushing box, a plurality of conical teeth are evenly and equidistantly arranged on the circumferential outer surfaces of the two crushing rollers, two mounting shafts are symmetrically and fixedly mounted between inner walls on opposite sides of the crushing box, a plurality of detection rods are rotatably mounted on the outer surfaces of the two mounting shafts at equal distances, a second connecting rod is rotatably mounted on the other end of the detection rod, a sliding rod is rotatably mounted on the top end of the second connecting rod, two groups of piston cylinders are symmetrically and fixedly mounted on the upper surface of the crushing box near both ends, an indicator plate is rotatably mounted on the top end of the piston cylinder, one end of the detection rod near the conical teeth is set as an arc, and one end of the detection rod near the crushing roller abuts against the upper surface of the conical teeth.

[0008] As a further solution of the present invention, a first piston is slidably installed on the inner wall of the piston cylinder, the top end of the sliding rod passes through the lower surface of the piston cylinder and is fixedly installed on the lower surface of the first piston, a telescopic cylinder is fixedly installed on the outer surface of one side of the piston cylinder, the telescopic cylinder is connected to the interior of the piston cylinder, and a second piston is slidably installed on the inner wall of the telescopic cylinder.

[0009] As a further solution of the present invention, a push rod is fixedly mounted on the upper surface of the second piston, the top end of the push rod passes through the outer surface of the telescopic cylinder and is slidably mounted thereon, a third connecting rod is rotatably mounted on the top end of the push rod, and the top end of the third connecting rod is rotatably mounted to the lower surface of the signboard.

[0010] As a further solution of the present invention, two fixed rods are symmetrically fixedly installed between the inner walls on opposite sides near the top of the crushing box, and a plurality of push plates are equidistantly rotatably installed on the outer surfaces of the two fixed rods. The push plates are inclined, and the outer surfaces of adjacent push plates are abutted against each other. The push plates are arranged corresponding to the conical teeth, and a first connecting rod is rotatably installed on the lower surface of the push plate near the bottom end, and the bottom end of the first connecting rod is rotatably installed on the upper surface of the detection rod away from one end of the second connecting rod.

[0011] As a further solution of the present invention, adjacent ends of the two crushing rollers pass through the outer surface of the crushing box and are fixedly installed with gears, the two gears are meshed with each other, the other end of one of the crushing rollers passes through the outer surface of the crushing box and is fixedly installed with a third pulley, a driving motor is fixedly installed on the upper surface of one end of the mounting frame, a transmission shaft is fixedly installed on the output end of the driving motor, a fourth pulley is fixedly installed on the outer surface of the transmission shaft, and the outer surfaces of the fourth pulley and the third pulley are sleeved with a second belt.

[0012] As a further solution of the present invention, two slide rails are symmetrically fixedly installed between the inner walls of the mounting frame near the bottom, the outer surfaces of the two slide rails are provided with slide grooves, the inner walls of the two slide grooves are slidably installed with slide columns, a screen box is fixedly installed between the two slide columns, the screen box is inclined, a crankshaft is rotatably installed between the inner walls of the mounting frame near one end of the driving motor, a curved neck is provided on the outer surface of the crankshaft, a driving rod is rotatably installed between the inner walls of the curved neck, and the other end of the driving rod is rotatably installed on the upper surface of the screen box away from the slide column end.

[0013] As a further solution of the present invention, a first pulley is fixedly mounted on one end of the transmission shaft away from the driving motor, a second pulley is fixedly mounted on the outer surface of the crankshaft, and a first belt is sleeved on the outer surfaces of the first pulley and the second pulley.

[0014] As a further solution of the present invention, a dial is fixedly mounted on the outer surface of one side of the gear, and a plurality of scale marks are equidistantly arranged in the circumferential direction of the outer surface of the dial, and the plurality of scale marks are respectively arranged corresponding to a plurality of conical teeth.

[0015] As a further solution of the present invention, the angle between the center line of the telescopic cylinder and the center line of the piston cylinder is 30°.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. By rotating the detection rod, the other end of the detection rod is driven to rotate downward, and the detection rod drives the sliding rod to move downward through the second connecting rod, and the sliding rod drives the first piston to move downward, so that the first piston compresses the air at the bottom of the piston cylinder, and the compressed air will enter the interior of the telescopic cylinder. At this time, sufficient air pressure will lift the second piston, and the second piston drives the third connecting rod to move through the push rod, and the third connecting rod drives the indicator board to move upright. The indicating surface of the indicator board is provided with prompt characters, and the operator can directly observe the character prompts to determine whether the end of the conical tooth is complete. The device can detect the completeness of the conical teeth in real time to ensure that the conical teeth can effectively crush the waste concrete recycled aggregate into the required particle size, thereby ensuring the productivity and quality of the waste concrete recycled aggregate;

[0018] 2. The movement of the detection rod will drive the first connecting rod to move up and down, so that the first connecting rod drives the push plate to reciprocate and rotate around the fixed rod. The push plate beats the waste concrete recycled aggregates falling from the conveyor belt, so that they are dispersed and fall between the two crushing rollers, avoiding the waste concrete recycled aggregates from accumulating in one place, causing the local conical teeth to be subjected to greater pressure, avoiding the local conical teeth from being worn and damaged too quickly, and improving the service life of the conical teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a device for preparing recycled aggregate from construction waste and discarded concrete proposed by the present invention;

[0020] Figure 2 This is a rear structural schematic diagram of a device for preparing recycled aggregate from construction waste and discarded concrete proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a device for preparing recycled aggregate from construction waste and discarded concrete proposed by the present invention from a bottom-up view;

[0022] Figure 4 A schematic diagram of a screen box of a device for preparing recycled aggregate from construction waste and discarded concrete proposed by the present invention;

[0023] Figure 5A schematic diagram of a crushing roller of a device for preparing recycled aggregate from construction waste and abandoned concrete proposed by the present invention;

[0024] Figure 6 A schematic diagram of a push plate of a device for preparing recycled aggregate from construction waste and discarded concrete proposed by the present invention;

[0025] Figure 7 A schematic diagram of a detection rod of a device for preparing recycled aggregate from construction waste and discarded concrete proposed by the present invention;

[0026] Figure 8 This is a schematic diagram of the piston cylinder of a device for preparing recycled aggregate from construction waste and abandoned concrete proposed by the present invention.

[0027] In the figure: 1. mounting frame; 2. crushing box; 3. screen box; 4. slide rail; 5. slide column; 6. crankshaft; 7. curved neck; 8. driving rod; 9. driving motor; 10. transmission shaft; 11. first pulley; 12. first belt; 13. second pulley; 14. third pulley; 15. second belt; 16. fourth pulley; 17. gear; 18. crushing roller; 19. conical gear; 20. dial; 21. fixed rod; 22. push plate; 23. mounting shaft; 24. detection rod; 25. first connecting rod; 26. second connecting rod; 27. slide rod; 28. piston cylinder; 29. ​​indicator plate; 30. third connecting rod; 31. telescopic cylinder; 32. first piston; 33. push rod; 34. second piston. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Reference Figure 1-Figure 8 A device for preparing recycled aggregate from abandoned concrete of construction waste comprises a mounting frame 1, a crushing box 2 is fixedly mounted on the top of the mounting frame 1, two crushing rollers 18 are rotatably mounted between the inner walls on opposite sides of the crushing box 2, a plurality of conical teeth 19 are evenly and equidistantly arranged on the circumferential outer surfaces of the two crushing rollers 18 (the conical design enables them to generate gradually increasing pressure when the material passes through the crushing rollers, thereby gradually crushing the material and finally achieving the required particle size and shape. This design is particularly effective for processing harder materials or materials with different densities), two mounting shafts 23 are symmetrically and fixedly mounted between the inner walls on opposite sides of the crushing box 2, a plurality of detection rods 24 are rotatably mounted on the outer surfaces of the two mounting shafts 23 at equal distances, a second connecting rod 26 is rotatably mounted on the other end of the detection rod 24, a sliding rod 27 is rotatably mounted on the top end of the second connecting rod 26, and the upper surface of the crushing box 2 near the two ends is provided with a plurality of detection rods 24, and the detection rod 24 is rotatably mounted on the upper surface of the second connecting rod 26. Two groups of piston cylinders 28 are symmetrically fixedly installed on the surface, and an indicator plate 29 is rotatably installed on the top of the piston cylinder 28. The end of the detection rod 24 close to the conical tooth 19 is set in an arc, and the end of the detection rod 24 close to the crushing roller 18 is against the upper surface of the conical tooth 19. The first piston 32 is slidably installed on the inner wall of the piston cylinder 28. The top end of the slide rod 27 passes through the lower surface of the piston cylinder 28 and is fixedly installed on the lower surface of the first piston 32. A telescopic cylinder 31 is fixedly installed on the outer surface of one side of the piston cylinder 28. The telescopic cylinder 31 is connected to the interior of the piston cylinder 28. A second piston 34 is slidably installed on the inner wall of the telescopic cylinder 31. A push rod 33 is fixedly installed on the upper surface of the second piston 34. The top end of the push rod 33 passes through the outer surface of the telescopic cylinder 31 and is slidably installed with it. The top end of the push rod 33 is rotatably installed with a third connecting rod 30, and the top end of the third connecting rod 30 is rotatably installed with the lower surface of the indicator plate 29.

[0032] When the crushing roller 18 rotates, it will drive the conical teeth 19 to move. Through the contact between the conical teeth 19 and the detection rod 24, the conical teeth 19 drive one end of the detection rod 24 to rotate upward, and through the rotation of the detection rod 24, drive the other end to rotate downward, and the detection rod 24 drives the sliding rod 27 to move downward through the second connecting rod 26, and the sliding rod 27 drives the first piston 32 to move downward, so that the first piston 32 compresses the air at the bottom of the piston cylinder 28, and the compressed air will enter the interior of the telescopic cylinder 31. When the sliding rod 27 continues to move downward, the first piston 32 will continue to press the air into the interior of the telescopic cylinder 31. At this time, sufficient air pressure will lift the second piston 34, and the second piston 34 will drive the push rod 33 to move upward, so that the push rod 33 drives the third connecting rod 30 to move, and the third connecting rod 30 drives the indicator board 29 to move upright. The indication surface of the indicator board 29 is provided with prompt characters, and the operator can directly observe the character prompts. In order to determine whether the end of the conical tooth 19 is intact, when the end of the conical tooth 19 is severely worn or broken, the end of the detection rod 24 has less contact or no contact with the end of the conical tooth 19. At this time, the conical tooth 19 drives the detection rod 24 to move with a smaller amplitude or the conical tooth 19 does not drive the detection rod 24 to move, so that the first piston 32 does not move downward or moves slightly. Because the indicator plate 29 has a certain weight, the first piston 32 does not move downward or moves slightly. The sign 29 will not be driven to rise. At this time, the operator can directly observe that the sign 29 is not raised, and then stop the machine in time, detect the degree of damage of the conical tooth 19, and replace or repair it in time. The device can detect the integrity of the conical tooth 19 in real time to ensure that the conical tooth 19 can effectively crush the waste concrete recycled aggregate into the required particle size, thereby ensuring the productivity and quality of the waste concrete recycled aggregate.

[0033] In this embodiment, two fixed rods 21 are symmetrically fixedly installed between the inner walls of the crushing box 2 on both sides near the top, and a plurality of push plates 22 are equidistantly rotatably installed on the outer surfaces of the two fixed rods 21. The push plates 22 are tilted, and the outer surfaces of adjacent push plates 22 are against each other. The push plates 22 are arranged corresponding to the conical teeth 19. A first connecting rod 25 is rotatably installed on the lower surface of the push plate 22 near the bottom end, and the bottom end of the first connecting rod 25 is rotatably installed on the upper surface of the detection rod 24 away from one end of the second connecting rod 26. The adjacent ends of the two crushing rollers 18 are both penetrated through the outer surface of the crushing box 2 and fixedly installed with gears 17, and the two gears 17 are meshed with each other. The other end of one of the crushing rollers 18 penetrates the outer surface of the crushing box 2 and is fixedly installed with a third pulley 14. A driving motor 9 is fixedly installed on the upper surface of one end of the mounting frame 1, and a transmission shaft 10 is fixedly installed on the output end of the driving motor 9. A fourth pulley 16 is fixedly installed on the outer surface of the transmission shaft 10, and a second belt 15 is sleeved on the outer surfaces of the fourth pulley 16 and the third pulley 14.

[0034] When in use, the waste concrete recycled aggregate is transported to the top of the crushing box 2 by the conveyor belt, and is put into the upper surface of the crushing roller 18 through the feed port above the crushing box 2. The drive motor 9 drives the transmission shaft 10 to rotate, so that the transmission shaft 10 drives the fourth pulley 16 to rotate, and the fourth pulley 16 drives the third pulley 14 to rotate through the second belt 15, so that the third pulley 14 drives one of the crushing rollers 18 to rotate, and the crushing roller 18 drives the other crushing roller 18 to rotate through the engagement of two gears 17. The two crushing rollers 18 rotate towards each other, and the conical teeth 19 on the outer surface of the crushing roller 18 squeeze and crush the waste concrete recycled aggregate into blocks for subsequent production and use.

[0035] In this embodiment, two slide rails 4 are symmetrically fixedly installed between the inner walls of the mounting frame 1 near the bottom, and the outer surfaces of the two slide rails 4 are provided with slide grooves, and the inner walls of the two slide grooves are slidably installed with slide columns 5. A screen box 3 is fixedly installed between the two slide columns 5, and the screen box 3 is inclined. A crankshaft 6 is rotatably installed between the inner walls of the mounting frame 1 near one end of the driving motor 9, and a curved neck 7 is provided on the outer surface of the crankshaft 6. A driving rod 8 is rotatably installed between the inner walls of the curved neck 7, and the other end of the driving rod 8 is rotatably installed on the upper surface of the screen box 3 away from the slide column 5. A first pulley 11 is fixedly installed on the end of the transmission shaft 10 away from the driving motor 9, and a second pulley 13 is fixedly installed on the outer surface of the crankshaft 6. The outer surfaces of the first pulley 11 and the second pulley 13 are sleeved with a first belt 12.

[0036] The broken waste concrete recycled aggregate will fall into the upper surface of the screen box 3, and the first pulley 11 is driven to rotate through the transmission shaft 10, and the first pulley 11 drives the second pulley 13 to rotate through the first belt 12, so that the second pulley 13 drives the crankshaft 6 to rotate, and the crankshaft 6 drives the curved neck 7 to rotate eccentrically, and the curved neck 7 drives the driving rod 8 to move, and the driving rod 8 drives the screen box 3 to vibrate reciprocatingly through the cooperation of the sliding column 5 and the sliding rail 4, so as to screen the waste concrete recycled aggregate on the upper surface of the screen box 3, and the screened waste concrete recycled aggregate falls into different collection boxes respectively and enters the subsequent production link. The device is convenient for screening waste concrete recycled aggregate.

[0037] In this embodiment, a dial 20 is fixedly installed on the outer surface of one side of the gear 17, and a plurality of scale marks are equidistantly arranged in the circumferential direction of the outer surface of the dial 20, and the plurality of scale marks are respectively arranged corresponding to the plurality of conical teeth 19. When a column of indicator signs 29 is not raised, the synchronous movement of the dial 20 and the gear 17 can be used to directly see which row of conical teeth 19 is damaged. The device can quickly find which conical tooth 19 is damaged, which is convenient for subsequent maintenance and replacement.

[0038] In this embodiment, the included angle between the center line of the telescopic cylinder 31 and the center line of the piston cylinder 28 is 30°.

[0039] In the present embodiment, it should be noted that the piston cylinder 28 is in a sealed state, the initial position of the first piston 32 is to stop at the top of the piston cylinder 28, the first piston 32 is matched with the inner wall of the piston cylinder 28, the initial position of the second piston 34 is at the bottom of the telescopic cylinder 31, the second piston 34 is matched with the inner wall of the telescopic cylinder 31, and an exhaust hole is provided at the top of the telescopic cylinder 31. When the first piston 32 moves downward, the internal pressure of the piston cylinder 28 and the telescopic cylinder 31 will increase. When the pressure reaches a fixed value, it will drive the second piston 34 and the push rod 33 to lift the indicator sign 29. When the first piston 32 moves downward, a negative pressure will be formed in the top space of the piston cylinder 28, and the movement of the detection rod 24 will overcome this negative pressure so as not to affect the downward movement of the first piston 32.

[0040] It should be noted that when the present invention is in use, the waste concrete recycled aggregate is transported to the top of the crushing box 2 by the conveyor belt, and is put into the upper surface of the crushing roller 18 through the feed port above the crushing box 2. The transmission shaft 10 is driven to rotate by the driving motor 9, so that the transmission shaft 10 drives the fourth pulley 16 to rotate, and the fourth pulley 16 drives the third pulley 14 to rotate through the second belt 15, so that the third pulley 14 drives one of the crushing rollers 18 to rotate, and the crushing roller 18 drives the other crushing roller 18 to rotate through the meshing of two gears 17. The two crushing rollers 18 rotate in opposite directions, and the waste concrete recycled aggregate is squeezed and crushed into blocks through the conical teeth 19 on the outer surface of the crushing roller 18, which is convenient for Subsequent production and use; the broken waste concrete recycled aggregate will fall into the upper surface of the screen box 3, and the first pulley 11 is driven to rotate through the transmission shaft 10, and the first pulley 11 drives the second pulley 13 to rotate through the first belt 12, so that the second pulley 13 drives the crankshaft 6 to rotate, and the crankshaft 6 drives the curved neck 7 to rotate eccentrically, and the curved neck 7 drives the driving rod 8 to move, and the driving rod 8 drives the screen box 3 to vibrate reciprocatingly through the cooperation of the sliding column 5 and the sliding rail 4, and the waste concrete recycled aggregate on the upper surface of the screen box 3 is screened. The screened waste concrete recycled aggregate falls into different collection boxes respectively and enters the subsequent production link. The device is convenient for screening waste concrete recycled aggregate;When the crushing roller 18 rotates, it drives the conical teeth 19 to move. Through the abutment between the conical teeth 19 and the detection rod 24, the conical teeth 19 drives one end of the detection rod 24 to rotate upward, and through the rotation of the detection rod 24, drives the other end to rotate downward. The detection rod 24 drives the sliding rod 27 to move downward through the second connecting rod 26, and the sliding rod 27 drives the first piston 32 to move downward, so that the first piston 32 compresses the air at the bottom of the piston cylinder 28, and the compressed air enters the interior of the telescopic cylinder 31. When the sliding rod 27 continues to move downward, the first piston 32 will continue to press the air into the telescopic cylinder. 31, at this time, sufficient air pressure will push up the second piston 34, and the second piston 34 will drive the push rod 33 to move upward, so that the push rod 33 drives the third connecting rod 30 to move, and the third connecting rod 30 drives the indicator plate 29 to move upright. The indicating surface of the indicator plate 29 is provided with prompt characters, and the operator can directly observe the character prompts to determine whether the end of the conical tooth 19 is complete. When the end of the conical tooth 19 is seriously worn or seriously broken, the end of the detection rod 24 has less contact or no contact with the end of the conical tooth 19. At this time, the conical tooth 19 drives the detection rod 24 The first piston 32 does not move downward or moves slightly when the cone teeth 19 do not drive the detection rod 24 to move with a small amplitude. Because the indicator plate 29 has a certain weight, the first piston 32 does not move downward or moves slightly, and the indicator plate 29 will not rise. At this time, the operator can directly observe that the indicator plate 29 is not raised, and then stop the machine in time to detect the damage of the cone teeth 19, and replace or repair them in time. The integrity of the cone teeth 19 can be detected in real time through this device to ensure that the cone teeth 19 can effectively recycle the waste concrete aggregate. The waste concrete recycled aggregate is crushed into the required particle size, ensuring the productivity and quality of the waste concrete recycled aggregate; at the same time, the movement of the detection rod 24 will drive the first connecting rod 25 to move up and down, so that the first connecting rod 25 drives the push plate 22 to reciprocate around the fixed rod 21, and the push plate 22 beats the waste concrete recycled aggregate falling from the conveyor belt, so that it is dispersed and falls between the two crushing rollers 18, avoiding the waste concrete recycled aggregate to accumulate in one place, causing the local conical teeth 19 to bear greater pressure, avoiding the local conical teeth 19 from being worn and damaged too quickly, and improving the service life of the conical teeth 19. ;

[0041] The above shows and describes the basic principles and main features of the present invention and the 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 only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for preparing recycled aggregate from construction waste and waste concrete, comprising a mounting frame (1), It is characterized in that A crushing box (2) is fixedly mounted on the top of the mounting frame (1), two crushing rollers (18) are rotatably mounted between inner walls on opposite sides of the crushing box (2), a plurality of conical teeth (19) are evenly and equidistantly arranged on the circumferential outer surfaces of the two crushing rollers (18), two mounting shafts (23) are symmetrically and fixedly mounted between inner walls on opposite sides of the crushing box (2), a plurality of detection rods (24) are rotatably mounted on the outer surfaces of the two mounting shafts (23), and the detection rods (24) are evenly and equidistantly mounted. ) is rotatably mounted on the other end of the second connecting rod (26), a sliding rod (27) is rotatably mounted on the top end of the second connecting rod (26), two groups of piston cylinders (28) are symmetrically fixedly mounted on the upper surface of the crushing box (2) near both ends, an indicator plate (29) is rotatably mounted on the top end of the piston cylinder (28), one end of the detection rod (24) near the conical tooth (19) is set as an arc, and one end of the detection rod (24) near the crushing roller (18) is against the upper surface of the conical tooth (19).

2. A device for preparing recycled aggregate from construction waste and waste concrete according to claim 1, It is characterized in that A first piston (32) is slidably mounted on the inner wall of the piston cylinder (28); the top end of the slide rod (27) penetrates the lower surface of the piston cylinder (28) and is fixedly mounted on the lower surface of the first piston (32); a telescopic cylinder (31) is fixedly mounted on the outer surface of one side of the piston cylinder (28); the telescopic cylinder (31) is communicated with the interior of the piston cylinder (28); and a second piston (34) is slidably mounted on the inner wall of the telescopic cylinder (31).

3. A device for preparing recycled aggregate from construction waste and waste concrete according to claim 2, It is characterized in that A push rod (33) is fixedly mounted on the upper surface of the second piston (34), the top end of the push rod (33) penetrates the outer surface of the telescopic cylinder (31) and is slidably mounted thereon, a third connecting rod (30) is rotatably mounted on the top end of the push rod (33), and the top end of the third connecting rod (30) is rotatably mounted on the lower surface of the indicator plate (29).

4. The device for preparing recycled aggregate from construction waste and waste concrete according to claim 3, It is characterized in that Two fixed rods (21) are symmetrically fixedly installed between the inner walls on both sides of the crushing box (2) near the top, and a plurality of push plates (22) are equidistantly rotatably installed on the outer surfaces of the two fixed rods (21). The push plates (22) are inclinedly arranged, and the outer surfaces of adjacent push plates (22) are abutted against each other. The push plates (22) are arranged corresponding to the conical teeth (19). A first connecting rod (25) is rotatably installed on the lower surface of the push plate (22) near the bottom end, and the bottom end of the first connecting rod (25) is rotatably installed on the upper surface of the detection rod (24) away from one end of the second connecting rod (26).

5. The device for preparing recycled aggregate from construction waste and waste concrete according to claim 1, It is characterized in that Adjacent ends of the two crushing rollers (18) penetrate the outer surface of the crushing box (2) and are fixedly mounted with gears (17), the two gears (17) are meshed with each other, the other end of one of the crushing rollers (18) penetrates the outer surface of the crushing box (2) and is fixedly mounted with a third pulley (14), a driving motor (9) is fixedly mounted on the upper surface of one end of the mounting frame (1), a transmission shaft (10) is fixedly mounted on the output end of the driving motor (9), a fourth pulley (16) is fixedly mounted on the outer surface of the transmission shaft (10), and a second belt (15) is sleeved on the outer surfaces of the fourth pulley (16) and the third pulley (14).

6. The device for preparing recycled aggregate from construction waste and waste concrete according to claim 5, It is characterized in that Two slide rails (4) are symmetrically fixedly installed between the inner walls of the mounting frame (1) near the bottom, and the outer surfaces of the two slide rails (4) are provided with slide grooves, and the inner walls of the two slide grooves are slidably installed with slide columns (5), and a screen box (3) is fixedly installed between the two slide columns (5), and the screen box (3) is inclined. A crankshaft (6) is rotatably installed between the inner walls of the mounting frame (1) near one end of the drive motor (9), and a curved neck (7) is provided on the outer surface of the crankshaft (6), and a drive rod (8) is rotatably installed between the inner walls of the curved neck (7), and the other end of the drive rod (8) is rotatably installed on the upper surface of the screen box (3) away from the end of the slide column (5).

7. The device for preparing recycled aggregate from construction waste and waste concrete according to claim 6, It is characterized in that A first pulley (11) is fixedly mounted on one end of the transmission shaft (10) away from the drive motor (9), a second pulley (13) is fixedly mounted on the outer surface of the crankshaft (6), and a first belt (12) is sleeved on the outer surfaces of the first pulley (11) and the second pulley (13).

8. The device for preparing recycled aggregate from construction waste and waste concrete according to claim 7, It is characterized in that A scale plate (20) is fixedly mounted on the outer surface of one side of the gear (17), and a plurality of scale marks are equidistantly arranged in the circumferential direction of the outer surface of the scale plate (20), and the plurality of scale marks are respectively arranged corresponding to the plurality of conical teeth (19).

9. The device for preparing recycled aggregate from construction waste and waste concrete according to claim 2, It is characterized in that The included angle between the center line of the telescopic cylinder (31) and the center line of the piston cylinder (28) is 30°.

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