Device for producing recycled aggregate by using construction waste

Abstract

The invention provides a device for producing recycled aggregate from construction waste, and belongs to the technical field of construction waste regeneration, the device comprises a U-shaped support plate, a driving assembly, a rotating disc, an electromagnetic adsorption plate, a first conveyor belt and a second conveyor belt, the rotating disc is rotatably arranged on the inner side of the U-shaped support plate, and the electromagnetic adsorption plate is arranged on the rotating disc; the first conveying belt and the second conveying belt penetrate through the lower portion of the rotary disc, the first conveying belt and the second conveying belt are parallel and distributed at intervals, and the multiple sets of electromagnetic adsorption plates are annularly distributed at intervals and fixedly installed at the bottom of the rotary disc. Compared with the prior art, when building concrete blocks are crushed, the concrete blocks can be automatically sorted, so that the concrete blocks containing reinforcing steel bars and the concrete blocks not containing the reinforcing steel bars are conveyed to different crushers correspondingly, and the crushing efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of construction waste recycling technology, specifically a device for producing recycled aggregates from construction waste. Background Technology

[0002] Recycled concrete refers to new concrete made by crushing, cleaning, and grading waste concrete blocks, mixing them with graded aggregates in a certain proportion, partially or completely replacing natural aggregates such as sand and gravel (mainly coarse aggregates), and then adding cement, water, etc.

[0003] Currently, after construction concrete is disposed of, some concrete blocks are prone to containing reinforcing steel bars. Concrete blocks containing reinforcing steel bars need to be crushed using a high-powered specialized crusher, while concrete blocks without reinforcing steel bars are crushed directly by a regular crusher. However, during the disposal of construction concrete, broken reinforcing steel bars are easily embedded inside the concrete block. At this time, it is impossible to observe with the naked eye whether the concrete block contains reinforcing steel bars. As a result, concrete blocks containing reinforcing steel bars are prone to flow into the regular crusher, thus affecting the crushing effect. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide an apparatus for producing recycled aggregates from construction waste.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An apparatus for producing recycled aggregate from construction waste includes a U-shaped support plate, a drive assembly, a turntable, an electromagnetic adsorption plate, a first conveyor belt, and a second conveyor belt. The turntable is rotatably mounted inside the U-shaped support plate. The first conveyor belt and the second conveyor belt pass under the turntable, and the first conveyor belt and the second conveyor belt are parallel and spaced apart. The electromagnetic adsorption plates are provided in several groups, and these electromagnetic adsorption plates are fixedly installed at intervals in a ring at the bottom of the turntable. The drive assembly is mounted on the side wall of the U-shaped support plate and is used to drive the turntable and the plurality of electromagnetic adsorption plates to rotate. When the electromagnetic adsorption plates rotate, they are used to adsorb the reinforced concrete blocks on the upper part of the first conveyor belt and transfer the adsorbed reinforced concrete blocks to the upper part of the second conveyor belt.

[0006] As a further improvement of the present invention: a support shaft is vertically inserted through the center of the turntable and rotatably fitted therewith; a toothed ring is fixedly provided on the outer circumference of the turntable; and the lower end of the support shaft is fixedly connected to the U-shaped bracket plate. The drive assembly includes a drive gear, a support plate, and a motor. The support plate is fixedly arranged on the inner wall of the U-shaped support plate, the motor is fixedly installed on the upper portion of the support plate, and the driving gear is installed on the output shaft of the motor and is in meshing connection with the gear ring.

[0007] As a further improvement of the present application, the upper end of the support shaft is fixedly installed with a power supply box, the power supply box is internally provided with a power supply, The C-shaped conductive sheet is fixedly arranged on the upper portion of the rotating disc outside the support shaft, and the C-shaped conductive sheet is connected with the power supply through wires, Each group of the electromagnetic adsorption plates is provided with a group of power taking rods, and the far end of each power taking rod away from the corresponding electromagnetic adsorption plate penetrates through the rotating disc and can be attached to the C-shaped conductive sheet.

[0008] As a further improvement of the present application, the bottom of the rotating disc is further provided with a plurality of pushing assemblies, and the pushing assemblies are correspondingly arranged between the electromagnetic adsorption plates, when the adjacent two groups of electromagnetic adsorption plates rotate to the position above the first conveying belt and then jointly adsorb the concrete blocks containing steel bars, the pushing assembly between the adjacent two groups of electromagnetic adsorption plates pushes the concrete blocks containing steel bars to one of the electromagnetic adsorption plates.

[0009] As a further improvement of the present application, the pushing assembly comprises a pushing column and a second power part, The pushing column is arranged between the adjacent two groups of electromagnetic adsorption plates, and the second power part is installed at the bottom of the rotating disc and is used to drive the pushing column to move between the adjacent two groups of electromagnetic adsorption plates, when the pushing column moves, the concrete blocks containing steel bars across the adjacent two groups of electromagnetic adsorption plates are pushed, and the concrete blocks containing steel bars are attached to the bottom of one of the electromagnetic adsorption plates and rotate, and then are removed from the bottom of the other electromagnetic adsorption plate.

[0010] As a further improvement of the present application, the second power part comprises a sliding block, a lead screw, a support, a bevel gear, a first half bevel gear and a second half bevel gear, The support is fixedly installed at the bottom of the rotating disc, one end of the lead screw is fixedly connected with the bevel gear, the other end penetrates through the support and extends to between the adjacent two groups of electromagnetic adsorption plates, the sliding block is sleeved outside the lead screw and is in screw thread cooperation with the lead screw, and the bottom of the rotating disc is further provided with a guide rail in sliding cooperation with the sliding block, The pushing column is arranged at the bottom of the sliding block, the first half bevel gear and the second half bevel gear are fixedly arranged outside the support shaft, and the first half bevel gear and the second half bevel gear are distributed in an upper and lower staggered manner.

[0011] As a further improvement of the present application, the pushing column is rotatably installed at the bottom of the sliding block, and a plurality of pushing teeth are fixedly arranged on the side wall of the pushing column. The pushing assembly further comprises a first power unit, which is used to drive the pushing column to rotate when the pushing column moves between two adjacent groups of the electromagnetic adsorption plates.

[0012] As a further improvement of the present application, the first power unit comprises a rack and a transmission gear, the transmission gear is fixedly arranged outside the pushing column, and the rack is fixedly installed on the side wall of the electromagnetic adsorption plate.

[0013] Compared with the prior art, the present application has the following advantages: In the embodiment of the present application, when it is necessary to crush the building concrete blocks, the concrete blocks to be crushed are placed above the first conveying belt and conveyed by the first conveying belt, and the driving assembly is used to drive the rotating disc and the plurality of electromagnetic adsorption plates to rotate. When the concrete blocks are conveyed below the rotating disc, the electromagnetic adsorption plates rotating above the first conveying belt can adsorb the concrete blocks containing steel bars. With the continuous rotation of the electromagnetic adsorption plates, the concrete blocks containing steel bars are synchronously rotated by the adsorption of the electromagnetic adsorption plates. When the electromagnetic adsorption plates rotate above the second conveying belt, the electromagnetic adsorption plates release the adsorption of the concrete blocks containing steel bars, so that the concrete blocks containing steel bars fall onto the upper part of the second conveying belt and are conveyed by the second conveying belt. The second conveying belt conveys the concrete blocks containing steel bars to the high-power crusher for crushing. The concrete blocks without steel bars cannot be adsorbed by the electromagnetic adsorption plates and are continuously conveyed by the first conveying belt to the ordinary crusher for crushing. Compared with the prior art, when the building concrete blocks are crushed, the concrete blocks can be automatically sorted, so that the concrete blocks containing steel bars and the concrete blocks without steel bars are conveyed to different crushers respectively, thereby improving the crushing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Structure diagram of a device for producing recycled aggregate from construction waste Figure 1 ; Figure 2 Structure diagram of a device for producing recycled aggregate from construction waste Figure 2 ; Figure 3 A Figure 1 magnified diagram of area A in FIG. 1 Figure 4 B Figure 2 magnified diagram of area B in FIG. 1 In the figure: 10-U-shaped support plate, 101-support shaft, 102-power box, 103-C-shaped conductive sheet, 20-first driving assembly, 201-driving gear, 202-supporting plate, 203-motor, 30-rotating disc, 301-tooth ring, 40-electromagnetic adsorption plate, 401-power taking rod, 50-pushing assembly, 501-pushing column, 5011-pulling tooth, 502-first power part, 5021-rack, 5022-driving gear, 503-second power part, 5031-sliding block, 5032-screw rod, 5033-support, 5034-bevel gear, 5035-first half bevel gear, 5036-second half bevel gear, 60-first conveying belt, 70-second conveying belt. DETAILED DESCRIPTION

[0015] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.

[0016] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0017] Please refer to Figure 1 and Figure 2 , the embodiment provides a device for producing recycled aggregate from construction waste. The device is applied after the primary crushing equipment and before the secondary crushing equipment. The concrete blocks without steel bars selected by the device are directly crushed into the secondary crusher, and the concrete blocks with steel bars are sent into the special crusher for processing, thereby forming a high-efficiency and automatic recycled aggregate production system. The primary crushing equipment is used to preliminarily crush the whole surface or larger concrete walls or blocks. The secondary crushing equipment is used to further crush the preliminarily crushed concrete blocks. Specifically, the device for producing recycled aggregate from construction waste comprises a U-shaped support plate 10, a driving assembly 20, a rotating disc 30, an electromagnetic adsorption plate 40, a first conveying belt 60 and a second conveying belt 70. The rotating disc 30 is rotationally arranged on the inner side of the U-shaped support plate 10. The first conveying belt 60 and the second conveying belt 70 pass through below the rotating disc 30. The first conveying belt 60 and the second conveying belt 70 are parallel and spaced. The electromagnetic adsorption plate 40 is provided with a plurality of groups. The plurality of electromagnetic adsorption plates 40 are annularly and spacedly fixedly installed at the bottom of the rotating disc 30. The driving assembly 20 is installed on the side wall of the U-shaped support plate 10 and is used to drive the rotating disc 30 and the plurality of electromagnetic adsorption plates 40 to rotate. When the plurality of electromagnetic adsorption plates 40 rotate, the electromagnetic adsorption plates 40 are used to adsorb the concrete blocks with steel bars on the upper part of the first conveying belt 60 and transfer the adsorbed concrete blocks with steel bars to above the second conveying belt 70.

[0018] When the crushing treatment is needed for the building concrete block, the concrete block to be crushed can be placed above the first conveying belt 60 and conveyed by the first conveying belt 60, and the rotating disc 30 and the plurality of electromagnetic adsorption plates 40 are driven to rotate by the driving assembly 20. When the concrete block is conveyed below the rotating disc 30, the electromagnetic adsorption plate 40 rotating to the position above the first conveying belt 60 can adsorb the concrete block containing steel bars. With the continuous rotation of the electromagnetic adsorption plate 40, the concrete block containing steel bars is synchronously rotated by the electromagnetic adsorption plate 40. When the electromagnetic adsorption plate 40 rotates to the position above the second conveying belt 70, the electromagnetic adsorption plate 40 releases the adsorption state of the concrete block containing steel bars, so that the concrete block containing steel bars falls to the upper part of the second conveying belt 70 and is conveyed by the second conveying belt 70. The second conveying belt 70 conveys the concrete block containing steel bars to the high-power crusher for crushing, and the concrete block without steel bars cannot be adsorbed by the electromagnetic adsorption plate 40 and is continuously conveyed by the first conveying belt 60 to the ordinary crusher for crushing.

[0019] Please refer to Figure 1 and Figure 2 In one embodiment, the rotating disc 30 is vertically penetrated and rotationally matched with a support shaft 101 at the center position, a gear ring 301 is fixedly arranged on the circumferential outer wall of the rotating disc 30, the lower end of the support shaft 101 is fixedly connected with the U-shaped support plate 10, the driving assembly 20 comprises a driving gear 201, a support plate 202 and a motor 203, the support plate 202 is fixedly arranged on the inner wall of the U-shaped support plate 10, the motor 203 is fixedly installed on the upper part of the support plate 202, and the driving gear 201 is installed on the output shaft of the motor 203 and engaged with the gear ring 301.

[0020] When the first conveying belt 60 conveys the concrete block, the motor 203 drives the driving gear 201 to rotate, and the rotating disc 30 is driven to rotate relative to the support shaft 101 through the meshing action of the driving gear 201 and the gear ring 301. The rotating disc 30 drives the plurality of electromagnetic adsorption plates 40 to rotate circularly above the first conveying belt 60 and the second conveying belt 70.

[0021] Please refer to Figure 1 , Figure 2 and Figure 3In one embodiment, a power supply box 102 is fixedly installed on the upper end of the support shaft 101. The power supply box 102 contains a power source. A C-shaped conductive sheet 103 is fixedly installed on the outside of the support shaft 101 above the turntable 30. The C-shaped conductive sheet 103 is connected to the power source by a wire (not shown in the figure). Each set of electromagnetic adsorption plates 40 is provided with a set of power-collecting rods 401 on the upper part. One end of several power-collecting rods 401 away from the corresponding electromagnetic adsorption plate 40 passes through the turntable 30 and can be attached to the C-shaped conductive sheet 103.

[0022] When the drive gear 201 meshes with the gear ring 301, thereby driving the turntable 30 and several electromagnetic adsorption plates 40 to rotate, several power-collecting rods 401 rotate synchronously. When a certain electromagnetic adsorption plate 40 rotates to a position above the first conveyor belt 60, the end of the power-collecting rod 401 connected to the electromagnetic adsorption plate 40 is in contact with the outer wall of the C-shaped conductive sheet 103. At this time, power is supplied to the electromagnetic adsorption plate 40 through the wire, the C-shaped conductive sheet 103, and the power-collecting rod 401. The electromagnetic adsorption plate 40 generates magnetic attraction, thereby adsorbing the concrete block containing steel bars on the upper part of the first conveyor belt 60. As the turntable 30 and the electromagnetic adsorption plate 40 continue to rotate, the electromagnetic adsorption plate 40 drives the adsorbed concrete block containing steel bars to rotate. As the reinforced concrete block rotates, the end of the electrode rod 401 slides against the outer wall of the C-shaped conductive sheet 103. The power supply continuously powers the electromagnetic adsorption plate 40, which continuously adsorbs the concrete block containing the reinforcing steel. When the electromagnetic adsorption plate 40 drives the concrete block containing the reinforcing steel to rotate to a position above the second conveyor belt 70, the electrode rod 401 rotates to the notch position of the C-shaped conductive sheet 103, and the end of the electrode rod 401 separates from the C-shaped conductive sheet 103. At this time, the power supply and the electromagnetic adsorption plate 40 are disconnected, the electromagnetic adsorption plate 40 is de-energized and demagnetized, and the concrete block containing the reinforcing steel falls onto the upper part of the second conveyor belt 70 and is then transported by the second conveyor belt 70 to the high-power crusher.

[0023] Because several electromagnetic adsorption plates 40 are arranged in a ring at intervals at the bottom of the turntable 30, there are gaps between adjacent sets of electromagnetic adsorption plates 40. When two adjacent sets of electromagnetic adsorption plates 40 act together above the second conveyor belt 60, the concrete block containing reinforcing steel on the upper part of the second conveyor belt 60 is easily attracted by both sets of electromagnetic adsorption plates 40 simultaneously. This causes the concrete block containing reinforcing steel to straddle the two sets of adjacent electromagnetic adsorption plates 40. Thus, when the two sets of electromagnetic adsorption plates 40 rotate to above the second conveyor belt 70, the first set of electromagnetic adsorption plates 40 will de-energize first, while the second set of electromagnetic adsorption plates 40 remains energized. Therefore, the concrete block containing reinforcing steel is attracted by the second set of electromagnetic adsorption plates 40 and is prone to tipping over during its descent. This prevents the concrete block containing reinforcing steel from accurately landing on the second conveyor belt 70, resulting in the transfer failure of the concrete block containing reinforcing steel. Based on this, please refer to... Figure 2In one embodiment, the bottom of the rotating disc 30 is also provided with a plurality of pushing assemblies 50, and the pushing assemblies 50 are correspondingly arranged between the adjacent two groups of electromagnetic adsorption plates 40. When the adjacent two groups of electromagnetic adsorption plates 40 are rotated to the position above the first conveying belt 60 and then adsorb the concrete blocks containing steel bars together, the pushing assembly 50 between the adjacent two groups of electromagnetic adsorption plates 40 pushes the concrete blocks containing steel bars to one of the electromagnetic adsorption plates 40, so as to release the concrete blocks containing steel bars from the state of being adsorbed together, thereby ensuring that the concrete blocks containing steel bars can be accurately dropped onto the upper part of the second conveying belt 70.

[0024] Please refer to Figure 4 In one embodiment, the pushing assembly 50 comprises a pushing column 501 and a second power part 503. The pushing column 501 is arranged between the adjacent two groups of electromagnetic adsorption plates 40, and the second power part 503 is installed at the bottom of the rotating disc 30 and used to drive the pushing column 501 to move between the adjacent two groups of electromagnetic adsorption plates 40. When the pushing column 501 moves, it pushes the concrete blocks containing steel bars which are horizontally arranged between the adjacent two groups of electromagnetic adsorption plates 40. When the concrete blocks containing steel bars are pushed, they are rotated to the bottom of one of the electromagnetic adsorption plates 40, and then removed from the bottom of the other electromagnetic adsorption plate 40.

[0025] Please refer to Figure 4 In one embodiment, the second power part 503 comprises a sliding block 5031, a lead screw 5032, a support 5033, a bevel gear 5034, a first half bevel gear 5035, and a second half bevel gear 5036. The support 5033 is fixedly installed at the bottom of the rotating disc 30. One end of the lead screw 5032 is fixedly connected with the bevel gear 5034, and the other end penetrates through the support 5033 and extends to between the adjacent two groups of electromagnetic adsorption plates 40. The sliding block 5031 is sleeved on the outside of the lead screw 5032 and threadedly matched with the lead screw 5032. The bottom of the rotating disc 30 is also provided with a guide rail (not shown in the figure) which is slidably matched with the sliding block 5031. The pushing column 501 is arranged at the bottom of the sliding block 5031. The first half bevel gear 5035 and the second half bevel gear 5036 are fixedly arranged on the outside of the support shaft 101, and the first half bevel gear 5035 and the second half bevel gear 5036 are distributed in an upper-lower staggered manner.

[0026] When the rotating disc 30 and the plurality of electromagnetic adsorption plates 40 rotate, the rotating disc 30 drives the lead screw 5032, the sliding block 5031, the pushing column 501 and the bevel gear 5034 to move circumferentially around the support shaft 101, when the adjacent two groups of electromagnetic adsorption plates 40 rotate to above the first conveying belt 60, the bevel gear 5034 at one end of the lead screw 5032 between the adjacent two groups of electromagnetic adsorption plates 40 moves circumferentially to above the second half bevel gear 5036 and meshes with the second half bevel gear 5036, the bevel gear 5034 drives the lead screw 5032 to rotate, the lead screw 5032 drives the sliding block 5031 to move along the adjacent two groups of electromagnetic adsorption plates 40 through the threaded cooperation between them, the sliding block 5031 drives the pushing column 501 to move, when the pushing column 501 moves, it pushes the concrete block containing steel bars across the two groups of electromagnetic adsorption plates 40, so that the concrete block containing steel bars rotates to adhere to one group of electromagnetic adsorption plates 40, and then is removed from the bottom of the other group of electromagnetic adsorption plates 40; after the pushing column 501 pushes the concrete block containing steel bars between the adjacent two groups of electromagnetic adsorption plates 40 to the bottom of one group of electromagnetic adsorption plates 40, the bevel gear 5034 moves circumferentially to below the first half bevel gear 5035 and meshes with the first half bevel gear 5035, at this time the bevel gear 5034 drives the lead screw 5032 to rotate reversely, thereby driving the sliding block 5031 and the pushing column 501 to move reversely, so as to reset the pushing column 501.

[0027] Please refer to Figure 4 In one embodiment, the pushing column 501 is rotatably installed at the bottom of the sliding block 5031, a plurality of raking teeth 5011 are fixedly arranged on the side wall of the pushing column 501, and the pushing assembly 50 further comprises a first power part 502, which is used to drive the pushing column 501 to rotate when the pushing column 501 moves between the adjacent two groups of electromagnetic adsorption plates 40, the rotation of the pushing column 501 drives the plurality of raking teeth 5011 to rotate, so that when the pushing column 501 pushes the concrete block containing steel bars across the two groups of electromagnetic adsorption plates 40, the plurality of raking teeth 5011 rakes the concrete block containing steel bars, so that the concrete block containing steel bars moves to the bottom of one group of electromagnetic adsorption plates 40 smoothly.

[0028] Please refer to Figure 4 In one embodiment, the first power part 502 comprises a rack 5021 and a transmission gear 5022, the transmission gear 5022 is fixedly arranged outside the pushing column 501, and the rack 5021 is fixedly installed on the side wall of the electromagnetic adsorption plate 40.

[0029] When the pushing column 501 moves between the two adjacent groups of electromagnetic adsorption plates 40, the pushing column 501 drives the transmission gear 5022 to move synchronously, the transmission gear 5022 meshes with the rack 5021 when moving, and then drives the pushing column 501 to rotate and the several push gears 5011 to rotate, so as to push the concrete block containing steel bars to the bottom of one group of electromagnetic adsorption plates 40.

[0030] In the embodiment of the present application, when it is necessary to crush the building concrete block, the concrete block to be crushed can be placed above the first conveying belt 60 and conveyed by the first conveying belt 60, and at the same time, the driving assembly 20 drives the rotating disc 30 and the several electromagnetic adsorption plates 40 to rotate, when the concrete block is conveyed to the position below the rotating disc 30, the electromagnetic adsorption plate 40 rotating to the position above the first conveying belt 60 can adsorb the concrete block containing steel bars, with the continuous rotation of the electromagnetic adsorption plate 40, the concrete block containing steel bars adsorbed by the electromagnetic adsorption plate 40 rotates synchronously, when the electromagnetic adsorption plate 40 rotates to the position above the second conveying belt 70, the electromagnetic adsorption plate 40 releases the adsorption state of the concrete block containing steel bars, so that the concrete block containing steel bars falls to the upper part of the second conveying belt 70 and is conveyed by the second conveying belt 70, the second conveying belt 70 conveys the concrete block containing steel bars to the high-power crusher for crushing, and the concrete block without steel bars cannot be adsorbed by the electromagnetic adsorption plate 40 and is continuously conveyed by the first conveying belt 60 to the ordinary crusher for crushing, compared with the prior art, when the building concrete block is crushed, the concrete block can be automatically sorted, so that the concrete block containing steel bars and the concrete block without steel bars are conveyed to different crushers respectively, thereby improving the crushing efficiency.

[0031] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. An apparatus for producing recycled aggregate from construction waste, characterized in that, It includes a U-shaped support plate, a drive assembly, a turntable, an electromagnetic adsorption plate, a first conveyor belt, and a second conveyor belt. The turntable is rotatably mounted inside the U-shaped support plate. The first conveyor belt and the second conveyor belt pass under the turntable, and the first conveyor belt and the second conveyor belt are parallel and spaced apart. The electromagnetic adsorption plates are provided in several groups, and these electromagnetic adsorption plates are fixedly installed at intervals in a ring at the bottom of the turntable. The drive assembly is mounted on the side wall of the U-shaped support plate and is used to drive the turntable and the plurality of electromagnetic adsorption plates to rotate. When the electromagnetic adsorption plates rotate, they are used to adsorb the reinforced concrete blocks on the upper part of the first conveyor belt and transfer the adsorbed reinforced concrete blocks to the upper part of the second conveyor belt.

2. The apparatus for producing recycled aggregate from construction waste according to claim 1, characterized in that, The turntable has a vertically penetrating support shaft at its center, which is rotatably fitted therewith. A toothed ring is fixedly installed on the outer circumference of the turntable, and the lower end of the support shaft is fixedly connected to the U-shaped bracket plate. The drive assembly includes a drive gear, a support plate, and a motor. The support plate is fixedly installed on the inner wall of the U-shaped bracket plate, the motor is fixedly installed on the upper part of the support plate, and the drive gear is installed on the output shaft of the motor and meshes with the gear ring.

3. The apparatus for producing recycled aggregate from construction waste according to claim 2, characterized in that, A power supply box is fixedly installed at the upper end of the support shaft, and a power supply is installed inside the power supply box. A C-shaped conductive sheet is fixedly installed on the outside of the support shaft above the turntable. The C-shaped conductive sheet is connected to the power source via a wire. Each set of electromagnetic adsorption plates is provided with a set of power-collecting rods on its upper part. The ends of several power-collecting rods away from the corresponding electromagnetic adsorption plates pass through the turntable and can be attached to the C-shaped conductive sheet.

4. The apparatus for producing recycled aggregate from construction waste according to claim 2, characterized in that, The bottom of the turntable is also provided with a number of pushing components, which are correspondingly arranged between a number of electromagnetic adsorption plates. When two adjacent sets of electromagnetic adsorption plates rotate to a position above the first conveyor belt and jointly adsorb concrete blocks containing steel bars, the pushing component located between the two adjacent sets of electromagnetic adsorption plates pushes the concrete block containing steel bars toward one of the sets of electromagnetic adsorption plates.

5. The apparatus for producing recycled aggregate from construction waste according to claim 4, characterized in that, The pushing assembly includes a pushing column and a second power unit. The pusher column is positioned between two adjacent sets of electromagnetic adsorption plates. The second power unit is installed at the bottom of the turntable to drive the pusher column to move between the two adjacent sets of electromagnetic adsorption plates. When the pusher column moves, it pushes the concrete block containing steel bars that spans between the two adjacent sets of electromagnetic adsorption plates. When the concrete block containing steel bars is pushed, it rotates against the bottom of one set of electromagnetic adsorption plates and is then removed from the bottom of the other set of electromagnetic adsorption plates.

6. The apparatus for producing recycled aggregate from construction waste according to claim 5, characterized in that, The second power unit includes a slider, a lead screw, a support, a bevel gear, a first half-bevel gear, and a second half-bevel gear. The support is fixedly installed at the bottom of the turntable. One end of the lead screw is fixedly connected to the bevel gear, and the other end passes through the support and extends between two adjacent sets of electromagnetic adsorption plates. The slider is sleeved on the outside of the lead screw and threadedly engaged with it. The bottom of the turntable is also provided with a guide rail that slides with the slider. The pusher column is located at the bottom of the slider, and the first half-bevel gear and the second half-bevel gear are fixedly located outside the support shaft. The first half-bevel gear and the second half-bevel gear are staggered vertically.

7. The apparatus for producing recycled aggregate from construction waste according to claim 6, characterized in that, The pusher column is rotatably mounted on the bottom of the slider, and several teeth are fixedly provided on the side wall of the pusher column. The pushing assembly also includes a first power unit, which drives the pushing column to rotate when the pushing column moves between two adjacent sets of electromagnetic adsorption plates.

8. The apparatus for producing recycled aggregate from construction waste according to claim 7, characterized in that, The first power unit includes a rack and a transmission gear. The transmission gear is fixedly disposed outside the pusher column, and the rack is fixedly mounted on the side wall of the electromagnetic adsorption plate.

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