Method and equipment for preparing concrete with recycled aggregate

Abstract

The present invention discloses a method and equipment for preparing concrete with recycled aggregates in the technical field of recycled concrete preparation, including a bottom platform, a feeding assembly, a rotating assembly, and a receiving assembly are arranged above the bottom platform, and a movable feeding assembly and a stirrer are arranged on the side of the bottom platform, and the feeding assembly is used to convey the aggregates discharged by the receiving assembly. The present invention can automatically feed, quantify and transfer recycled aggregates, and the entire preparation process has high automation efficiency, and there will be no situation of insufficient or excessive materials, which improves the accuracy of the overall preparation, and the entire structure is reasonably designed to meet the material collection requirements of different capacities, and has a wide range of applications.

Description

Technical Field

[0001] The invention relates to the technical field of recycled concrete preparation, in particular to a method and equipment for preparing concrete with recycled aggregate. Background Art

[0002] With the enhancement of people's concept of sustainable development and the development of science and technology, more and more construction waste can be recycled and formed into recycled aggregate after crushing, cleaning and grading; concrete made by partially or completely replacing natural aggregates such as sand and gravel with recycled aggregate is called recycled aggregate concrete; the apparent density and strength of the aggregate itself will affect the apparent density and elastic modulus of the concrete, and the water-cement ratio is the main factor determining the compressive strength of recycled aggregate concrete; in order to ensure the strength of recycled aggregate concrete during production, the water-cement ratio needs to be controlled, and the recycled aggregate needs to be mixed with other aggregates, so a feeding device is needed to feed and mix the different raw materials of the recycled concrete, so a feeding device is needed.

[0003] Most of the existing feeding devices are simple stop valve supply, which can only perform simple material discharge operations. It is easy for the valve to be closed in time, resulting in continued material discharge and affecting material weighing. In addition, when aggregates are adhered, they will be discharged together, resulting in inaccurate feeding. In addition, the existing weighing devices can often only perform weight detection but cannot limit capacity. Therefore, it is necessary to improve the structure of the feeding device. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide a method and equipment for preparing concrete using recycled aggregates to solve the problems raised in the above background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A device for preparing concrete with recycled aggregates, comprising a bottom platform, a feeding assembly, a rotating assembly, and a receiving assembly are arranged above the bottom platform, a movable feeding assembly and a stirrer are arranged on the side of the bottom platform, and the feeding assembly is used to transport aggregates discharged by the receiving assembly;

[0007] The feeding assembly includes a circular material box and a third bracket. A first cylinder is provided on the side of the third bracket. The third bracket is installed under the circular material box and is rotatably connected to the circular material box. The first cylinder pulls the circular material box to rotate and adjust the angle.

[0008] The rotating assembly is installed on the side of the feeding assembly, and the rotating assembly includes a fourth bracket that can be lifted and lowered, a fifth bracket that can be rotated is arranged above the fourth bracket, a third mounting block that is fixedly connected is arranged at the center of the top of the fifth bracket, an axially arranged inclined guide edge is arranged on the outer side of the third mounting block, and a movable groove that penetrates is arranged inside the inclined guide edge;

[0009] The material receiving assembly is installed on the fifth bracket, and the material receiving assembly includes an outer box, which slides along the inclined guide edge, and a liftable inner box is arranged inside the outer box.

[0010] Preferably, a cavity for storing aggregates is provided inside the circular material box, a rotating frame is provided inside the cavity, a discharge port penetrating the circular material box is provided at the bottom of the cavity, a symmetrically arranged inclined support frame is provided on the third bracket, a fixedly connected motor is provided under the third bracket, a universal joint is provided between the circular material box and the third bracket, and the motor drives the rotating frame to rotate synchronously through the universal joint.

[0011] Preferably, the rotating frame is provided with a first scraper and a second scraper, and when the rotating frame rotates, the first scraper and the second scraper are driven to rotate synchronously. A buffer frame distributed in an array is provided under the circular material box, and a spring is sleeved on the outside of the telescopic column. When the circular material box rotates, the buffer frame contacts the inclined support frame in the rotation direction of the circular material box for buffering.

[0012] Preferably, the inclination angle of the inclined guide edge is the same as the inclination angle of the positioning frame when the discharge port reaches the lowest point, and the two are horizontal.

[0013] Preferably, the number of the material receiving components is the same as the inclined guide edge, and a sealing gasket is provided at the contact position between the inner box and the outer box, so that the inner size of the outer box changes when the inner box is raised or lowered.

[0014] Preferably, the bottom array of the outer box is provided with a rotating moving wheel, which is clamped on the inclined guide edge and slidably cooperates with it, and when the outer box moves, it follows the inclined guide edge to change its angle.

[0015] Preferably, the interior of the inner box is designed to be inclined, and a connected discharge pipe is provided at the bottom, the discharge pipe moves in the movable groove, and a discharge valve is provided on the discharge pipe;

[0016] A hydraulic rod is provided between the outer box and the third mounting block, and the hydraulic rod pushes the material receiving assembly to move along the inclined guide edge.

[0017] Preferably, the feeding assembly comprises a movable platform, which automatically reciprocates along a track laid on the ground. A material transfer barrel is provided inside the mobile platform, and an openable and closable sealing member is provided at the bottom of the material transfer barrel, and the sealing member can be opened and closed automatically.

[0018] A method for preparing concrete using recycled aggregates, comprising the following steps:

[0019] Step 1: The first cylinder starts to pull the circular material box to rotate, the buffer frame contacts the inclined support frame to provide buffering, the discharge port is lifted to the highest point, and then the crushed aggregate is put into the lower end of the circular material box. The internal space of the outer box is adjusted according to the aggregate required each time. The fourth cylinder pushes the inner box up and down to the specified position and then stops;

[0020] Step 2, the third cylinder drives the driving shaft, the fifth bracket, and the material receiving assembly to rotate, the outer box rotates to the bottom of the positioning frame and stops, the hydraulic rod drives the material receiving assembly forward, the outer box gradually tilts when the moving wheel drives forward, and stops moving after reaching the specified position, the first cylinder pulls the circular material box to rotate in the opposite direction, and the positioning frame closes the upper end of the outer box when the discharge port reaches the lowest point. Due to the inclination of the circular material box, the aggregate will slide toward the discharge port under the action of gravity;

[0021] Step 3, the motor drives the rotating frame to rotate, and the first scraper and the second scraper push the aggregate into the outer box and the inner box. After the outer box and the inner box are full, the first scraper and the second scraper push the aggregate away from the discharge port, and then the first cylinder starts to pull the circular material box to rotate back to the initial position of step 1, and then continue to put new aggregate into the circular material box;

[0022] Step 4: The hydraulic rod pulls the outer box back to its original position, and then the fifth bracket rotates. The material receiving assembly stops after reaching the top of the feeding assembly, the discharge valve opens, and the aggregate falls into the material transfer barrel through the discharge pipe. The feeding assembly starts to move to the top of the agitator, the sealing part opens to drop the material, and then cement and water are added to the agitator to mix the raw materials for mixing;

[0023] Step 5: After the blanking is completed, the sealing part is closed, the feeding assembly retreats and returns to its original position, and the above operation is repeated for subsequent feeding.

[0024] Beneficial effects of the present invention:

[0025] The device for preparing concrete with recycled aggregates of the present invention can automatically feed, quantify and transfer recycled aggregates, and the entire preparation process has high automation efficiency, and there will be no situation of insufficient or excessive material, thereby improving the accuracy of the overall preparation, and the entire structure is reasonably designed, which can meet the requirements of taking materials of different weights and has a wide range of applications;

[0026] When the present invention is in use, the first cylinder is started to pull the circular material box to rotate and adjust the angle. When the circular material box rotates to adjust the angle, the discharge port is rotated to lower or lift, and the aggregate in the cavity is synchronously slid and displaced. A rotating frame is provided inside the cavity. When the rotating frame rotates, it drives the first scraper and the second scraper to rotate synchronously. When the first scraper and the second scraper rotate, they drive the aggregate in the cavity to rotate through the discharge port, so as to avoid the situation of insufficient loading, ensure that the outer box can always be filled, and improve the accuracy. A buffer frame distributed in an array is provided under the circular material box. When the circular material box rotates, the buffer frame contacts the inclined support frame in the rotation direction of the circular material box for buffering, so as to avoid the hard stop of the circular material box when the first cylinder stops, and to avoid the aggregate in the cavity from being shaken out.

[0027] When the present invention is used, the material receiving assembly moves to receive the material. In order to improve the accuracy of receiving the material, the inclination angle of the inclined guide edge is the same as the inclination angle of the positioning frame when the material outlet reaches the lowest point. The two are horizontal. The material receiving assembly moves along the inclined guide edge, so that the top of the outer box can contact the inclined material outlet to avoid material leakage, thereby further improving the accuracy.

[0028] The present invention can continuously carry out the rotating material receiving work, and the internal size of the outer box can be changed when the inner box is lifted or lowered. The internal size can be changed according to the materials required for actual production, and can be suitable for aggregate feeding requirements of different capacities each time. The adjustment is simple and quick, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a schematic front view of the structure of a device for preparing concrete with recycled aggregate in an embodiment of the present invention;

[0031] Figure 2 It is a schematic top view of the structure of a device for preparing concrete with recycled aggregate in an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the partial structure of the feed assembly in the embodiment of the present invention. Figure 1 ;

[0033] Figure 4 This is a schematic diagram of the partial structure of the feed assembly in the embodiment of the present invention. Figure 2 ;

[0034] Figure 5 This is a schematic diagram of the partial structure of the feed assembly in the embodiment of the present invention. Figure 3 ;

[0035] Figure 6 Schematic diagram of the structure of the rotating assembly in the embodiment of the present invention Figure 1 ;

[0036] Figure 7 Schematic diagram of the structure of the rotating assembly in the embodiment of the present invention Figure 2 ;

[0037] Figure 8 is a partial structural schematic diagram of a rotating assembly in an embodiment of the present invention;

[0038] Fig. 9 is a schematic cross-sectional view of the structure of the material receiving assembly in an embodiment of the present invention;

[0039] Fig.10 is a schematic structural diagram of a feeding assembly in an embodiment of the present invention;

[0040] In the figure: 1, feeding assembly; 2, rotating assembly; 3, receiving assembly; 4, feeding assembly; 5, bottom platform; 11, circular material box; 12, third bracket; 13, first cylinder; 14, buffer frame; 15, motor; 16, rotating frame; 21, fourth bracket; 22, second cylinder; 23, driving shaft; 24, rack; 25, third cylinder; 26, fifth bracket; 31, outer box; 32, inner box; 33, fourth cylinder; 34, moving wheel; 35, hydraulic rod; 41, moving platform; 42, material transfer barrel; 51, the first A bracket; 52, a second bracket; 111, a cavity; 112, a discharge port; 113, a positioning frame; 114, a first mounting block; 115, a pull rod; 121, an inclined support frame; 122, a mounting column; 123, a second mounting block; 141, a telescopic column; 151, a universal joint; 161, a first scraper; 162, a second scraper; 211, a support wheel; 231, a gear; 261, a third mounting block; 262, an inclined guide edge; 263, a movable groove; 321, a discharge pipe; 322, a discharge valve; 421, a sealing member. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figures 1 to 10 As shown, this embodiment provides a device for preparing concrete with recycled aggregate, including a bottom platform 5, above which a first bracket 51 and a second bracket 52 are fixedly connected, a feeding assembly 1 is provided above the first bracket 51, a rotating assembly 2 and a material receiving assembly 3 are provided above the second bracket 52, and a movable feeding assembly 4 and a stirrer are provided on the side of the second bracket 52.

[0043] Furthermore, the feeding assembly 1 comprises a circular material box 11 and a third bracket 12. A first cylinder 13 is provided on the side of the third bracket 12. The telescopic end of the first cylinder 13 pulls the circular material box 11 to rotate;

[0044] Specifically, a cavity 111 for storing aggregate is provided inside the circular material box 11, a discharge port 112 penetrating the circular material box 11 is provided at the bottom of the cavity 111, a positioning frame 113 fixedly connected to the bottom of the circular material box 11 is provided outside the discharge port 112, and an array of first mounting blocks 114 are also provided at the bottom of the circular material box 11, a pull rod 115 fixedly connected to the first mounting block 114 is provided, and the telescopic end of the first cylinder 13 is rotatably connected to the pull rod 115;

[0045] The third bracket 12 is fixedly connected to the first bracket 51, and the third bracket 12 is provided with a symmetrically arranged inclined support frame 121, a mounting column 122 and a second mounting block 123. The tail end of the first cylinder 13 is rotatably connected to the mounting column 122, and the second mounting block 123 is rotatably connected to the first mounting block 114. When the first cylinder 13 is started, the circular material box 11 can be pulled to rotate and adjust the angle. When the circular material box 11 is rotated to adjust the angle, the discharge port 112 is rotated to be lowered or raised, and the aggregate in the cavity 111 is synchronously slid and displaced.

[0046] A rotating frame 16 is provided inside the cavity 111, and the rotating point of the rotating frame 16 is coaxial with the center of the circular material box 11. A first scraper 161 and a second scraper 162 are provided on the rotating frame 16. When the rotating frame 16 rotates, the first scraper 161 and the second scraper 162 are driven to rotate synchronously. When the first scraper 161 and the second scraper 162 rotate, the aggregate inside the cavity 111 is driven to rotate through the discharge port 112.

[0047] A fixedly connected motor 15 is provided below the third bracket 12, and a universal joint 151 is provided between the circular material box 11 and the third bracket 12. One end of the universal joint 151 is fixedly connected to the rotation point of the rotating frame 16, and the other end of the universal joint 151 is fixedly connected to the rotating shaft of the motor 15 through a coupling. The motor 15 drives the universal joint 151 and the rotating frame 16 to rotate synchronously. When the angle of the circular material box 11 changes, power can still be transmitted through the universal joint 151, and the rotating frame 16 will not stop rotating.

[0048] A buffer rack 14 distributed in an array is provided below the circular material box 11. The buffer rack 14 is symmetrically arranged relative to the first mounting block 114. An array of telescopic columns 141 are provided between the buffer rack 14 and the circular material box 11. The telescopic columns 141 are covered with springs on the outside. When the circular material box 11 rotates, the buffer rack 14 contacts the inclined support frame 121 in the rotation direction of the circular material box 11 for buffering, thereby preventing the circular material box 11 from stopping hard when the first cylinder 13 stops, and preventing the aggregate in the cavity 111 from being vibrated out.

[0049] Further, the rotating assembly 2 includes a fourth bracket 21 that can be raised and lowered, and an array of second cylinders 22 are arranged below the fourth bracket 21, the tail end of the second cylinder 22 is fixedly connected to the second bracket 52, and the telescopic end of the second cylinder 22 is fixedly connected to the fourth bracket 21, and the second cylinder 22 pushes the fourth bracket 21 to rise and fall, and a rotatably connected driving shaft 23 is arranged inside the fourth bracket 21, and a fixedly connected gear 231 is arranged at the bottom end of the driving shaft 23, and an axially arranged supporting wheel 211 is arranged outside the driving shaft 23;

[0050] A rotating fifth bracket 26 is provided above the fourth bracket 21, the top of the driving shaft 23 is fixedly connected to the center of the fifth bracket 26, the supporting wheel 211 contacts the lower end of the fifth bracket 26, and provides support for the rotation of the fifth bracket 26. A fixedly connected third cylinder 25 is provided on the side of the fourth bracket 21, and a fixedly connected rack 24 is provided at the telescopic end of the third cylinder 25. The rack 24 slides with the fourth bracket 21 through a slide rail slider assembly, and the rack 24 is meshed with the gear 231. The third cylinder 25 pushes the driving shaft 23 and the fifth bracket 26 to rotate synchronously through the rack 24 and the gear 231. When the fifth bracket 26 needs to rotate continuously, the rotation mode of the fifth bracket 26 needs to be changed to a direct motor drive, and the gear 231, the rack 24, and the third cylinder 25 are removed.

[0051] A third mounting block 261 is fixedly connected at the center of the top of the fifth bracket 26, an axially arranged inclined guide edge 262 is provided on the outer side of the third mounting block 261, a movable groove 263 is provided through the inclined guide edge 262, and the inclination angle of the inclined guide edge 262 is the same as the inclination angle of the positioning frame 113 when the discharge port 112 reaches the lowest point, and the two are horizontal.

[0052] Furthermore, the number of the material receiving components 3 is the same as the inclined guide edge 262, and the material receiving components 3 include an outer box 31, a weighing device is provided at the bottom of the outer box 31 to detect the increased weight of the outer box in real time, a liftable inner box 32 and a fourth cylinder 33 are provided inside the outer box 31, the tail end of the fourth cylinder 33 is fixedly connected to the outer box 31, and the telescopic end of the fourth cylinder 33 is fixedly connected to the inner box 32, and a sealing gasket is provided at the contact position between the inner box 32 and the outer box 31, and the inner size of the outer box 31 can be changed when the inner box 32 is lifted or lowered, and the inner size can be changed according to the materials actually required for production;

[0053] The outer box 31 is provided with a rotating moving wheel 34 at the bottom array. The moving wheel 34 is stuck on the inclined guide edge 262 and slides with it. When the outer box 31 moves, it follows the inclined guide edge 262 to change its angle. The inner box 32 is designed to be inclined inside. A connected discharge pipe 321 is provided at the bottom. The discharge pipe 321 moves in the movable groove 263. A discharge valve 322 is provided on the discharge pipe 321. The discharge valve 322 can be an automatic butterfly valve.

[0054] A hydraulic rod 35 is provided between the outer box 31 and the third mounting block 261 . The tail end of the hydraulic rod 35 is rotatably connected to the third mounting block 261 , and the telescopic end of the hydraulic rod 35 is rotatably connected to the outer box 31 . The hydraulic rod 35 pushes the material receiving assembly 3 to move along the inclined guide edge 262 .

[0055] Furthermore, the feeding assembly 4 includes a movable mobile platform 41, which automatically reciprocates along a track laid on the ground. A material transfer barrel 42 is provided inside the mobile platform 41, and an openable and closable sealing part 421 is provided at the bottom of the material transfer barrel 42. The sealing part 421 can be opened and closed automatically.

[0056] A method for preparing concrete using recycled aggregates, comprising the following steps:

[0057] Step 1, the first cylinder 13 starts to pull the circular material box 11 to rotate, the buffer frame 14 contacts the inclined support frame 121 to provide buffering, the discharge port 112 is lifted to the highest point, and then the crushed aggregate is put into the lower end of the circular material box 11, and the internal space of the outer box 31 is adjusted according to the aggregate required each time, and the fourth cylinder 33 pushes the inner box 32 to rise and fall to the specified position and then stops;

[0058] Step 2, the third cylinder 25 drives the driving shaft 23, the fifth bracket 26, and the material receiving assembly 3 to rotate, the outer box 31 rotates to the bottom of the positioning frame 113 and then stops, the hydraulic rod 35 drives the material receiving assembly 3 forward, the outer box 31 gradually tilts when the moving wheel 34 drives forward, and stops moving after reaching the specified position, the first cylinder 13 pulls the circular material box 11 to rotate in the opposite direction, and the positioning frame 113 closes the upper end of the outer box 31 when the discharge port 112 reaches the lowest point, and due to the inclination of the circular material box 11, the aggregate will slide toward the discharge port 112 under the action of gravity;

[0059] Step 3, the motor 15 drives the rotating frame 16 to rotate, and the first scraper 161 and the second scraper 162 push the aggregate into the outer box 31 and the inner box 32. After the outer box 31 and the inner box 32 are full, the first scraper 161 and the second scraper 162 push the aggregate away from the discharge port 112, and the weighing device at the bottom of the outer box 31 weighs the weight. Then the first cylinder 13 starts to pull the circular material box 11 to rotate back to the initial position of step 1, and then continue to put new aggregate into the circular material box 11;

[0060] Step 4, the hydraulic rod 35 pulls the outer box 31 back to its original position, and then the fifth bracket 26 rotates, the material receiving assembly 3 stops after reaching the top of the feeding assembly 4, the discharge valve 322 opens, and the aggregate falls into the material transfer barrel 42 through the discharge pipe 321, the feeding assembly 4 starts to move to the top of the mixer, the sealing part 421 opens to drop the material, and then cement and water are added into the mixer to mix the raw materials for mixing;

[0061] Step 5: After the blanking is completed, the sealing member 421 is closed, the feeding assembly 4 retreats and returns to its original position, and the above operation is repeated for subsequent feeding.

[0062] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and 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, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A device for preparing concrete from recycled aggregates, comprising a bottom platform (5), characterized in that: A feeding assembly (1), a rotating assembly (2), and a material receiving assembly (3) are provided above the bottom platform (5); a movable feeding assembly (4) and a stirrer are provided on the side of the bottom platform (5); the feeding assembly (4) is used to transport aggregate discharged from the material receiving assembly (3); The feeding assembly (1) comprises a circular material box (11) and a third bracket (12). A first cylinder (13) is provided on the side of the third bracket (12). The third bracket (12) is installed below the circular material box (11) and is rotatably connected thereto. The first cylinder (13) pulls the circular material box (11) to rotate and adjust the angle. The rotating assembly (2) is mounted on a side of the feeding assembly (1), and the rotating assembly (2) comprises a fourth bracket (21) that can be lifted and lowered, a fifth bracket (26) that can be rotated is arranged above the fourth bracket (21), a third mounting block (261) that is fixedly connected is arranged at the center of the top circle of the fifth bracket (26), an axially arranged inclined guide edge (262) is arranged on the outer side of the third mounting block (261), and a movable groove (263) that penetrates is arranged inside the inclined guide edge (262); The material receiving assembly (3) is mounted on the fifth bracket (26). The material receiving assembly (3) comprises an outer box (31). The outer box (31) slides along the inclined guide edge (262). A liftable inner box (32) is provided inside the outer box (31).

2. The equipment for preparing concrete from recycled aggregate according to claim 1, characterized in that: The circular material box (11) is provided with a cavity (111) for storing aggregates, a rotating frame (16) is provided inside the cavity (111), a discharge port (112) penetrating the circular material box (11) is provided at the bottom of the cavity (111), a symmetrically arranged inclined support frame (121) is provided on the third bracket (12), a fixedly connected motor (15) is provided below the third bracket (12), a universal joint (151) is provided between the circular material box (11) and the third bracket (12), and the motor (15) drives the rotating frame (16) to rotate synchronously via the universal joint (151).

3. The equipment for preparing concrete from recycled aggregate according to claim 2, characterized in that: The rotating frame (16) is provided with a first scraper (161) and a second scraper (162). When the rotating frame (16) rotates, the first scraper (161) and the second scraper (162) are driven to rotate synchronously. A buffer frame (14) distributed in an array is provided below the circular material box (11). A spring is sleeved on the outside of the telescopic column (141). When the circular material box (11) rotates, the buffer frame (14) contacts the inclined support frame (121) in the rotation direction of the circular material box (11) for buffering.

4. The equipment for preparing concrete from recycled aggregate according to claim 3, characterized in that: The inclination angle of the inclined guide edge (262) is the same as the inclination angle of the positioning frame (113) when the discharge port (112) reaches the lowest point, and the two are horizontal.

5. The equipment for preparing concrete from recycled aggregate according to claim 4, characterized in that: The number of the material receiving components (3) is the same as the inclined guide edge (262), and a sealing gasket is provided at the contact position between the inner box (32) and the outer box (31), so that the inner size of the outer box (31) changes when the inner box (32) is raised or lowered.

6. The equipment for preparing concrete with recycled aggregate according to claim 5, characterized in that: The bottom array of the outer box (31) is provided with rotating moving wheels (34), which are clamped on the inclined guide edge (262) and slidably matched therewith, and when the outer box (31) moves, it follows the inclined guide edge (262) to change its angle.

7. The equipment for preparing concrete from recycled aggregate according to claim 6, characterized in that: The interior of the inner box (32) is designed to be inclined, and a connected discharge pipe (321) is provided at the bottom. The discharge pipe (321) moves in the movable groove (263), and a discharge valve (322) is provided on the discharge pipe (321); A hydraulic rod (35) is provided between the outer box (31) and the third mounting block (261), and the hydraulic rod (35) pushes the material receiving assembly (3) to move along the inclined guide edge (262).

8. The equipment for preparing concrete from recycled aggregate according to claim 7, characterized in that: The feeding assembly (4) comprises a movable mobile platform (41), the mobile platform (41) automatically reciprocating along a track laid on the ground, a material transfer barrel (42) is provided inside the mobile platform (41), and an openable and closable sealing member (421) is provided at the bottom of the material transfer barrel (42), and the sealing member (421) can be opened and closed automatically.

9. A method for preparing concrete based on the equipment for preparing concrete with recycled aggregate according to claim 8, characterized in that: The following steps are involved: Step 1, the first cylinder (13) starts to pull the circular material box (11) to rotate, the buffer frame (14) contacts the inclined support frame (121) to provide buffering, the discharge port (112) is lifted to the highest point, and then the crushed aggregate is put into the lower end of the circular material box (11), and the internal space of the outer box (31) is adjusted according to the aggregate required each time, and the fourth cylinder (33) pushes the inner box (32) to rise and fall to a specified position and then stops; Step 2, the third cylinder (25) drives the driving shaft (23), the fifth bracket (26), and the material receiving assembly (3) to rotate, the outer box (31) rotates to the bottom of the positioning frame (113) and then stops, the hydraulic rod (35) drives the material receiving assembly (3) forward, the outer box (31) gradually tilts when driven forward by the moving wheel (34), and stops moving after reaching the specified position, the first cylinder (13) pulls the circular material box (11) to rotate in the opposite direction, and when the discharge port (112) reaches the lowest point, the positioning frame (113) closes the upper end of the outer box (31), and due to the inclination of the circular material box (11), the aggregate slides toward the discharge port (112) under the action of gravity; Step 3, the motor (15) drives the rotating frame (16) to rotate, and the first scraper (161) and the second scraper (162) push the aggregate into the outer box (31) and the inner box (32). After the outer box (31) and the inner box (32) are full, the first scraper (161) and the second scraper (162) push the aggregate away from the discharge port (112), and then the first cylinder (13) starts to pull the circular material box (11) to rotate back to the initial position of step 1, and then continue to put new aggregate into the circular material box (11); Step 4, the hydraulic rod (35) pulls the outer box (31) back to its original position, and then the fifth bracket (26) rotates, the material receiving assembly (3) stops after reaching the top of the feeding assembly (4), the discharge valve (322) opens, and the aggregate falls into the material transfer barrel (42) through the discharge pipe (321), the feeding assembly (4) starts to move to the top of the mixer, the sealing member (421) opens to drop the aggregate, and then cement and water are added to the mixer to prepare the raw materials for mixing; Step 5: After the material is dropped, the sealing member (421) is closed, the feeding assembly (4) is moved back to its original position, and the above operation is repeated for subsequent feeding.

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