Shaping device for recycled concrete preparation
By using a detachable rolling ring and a buffer mechanism in the mold for recycled concrete, the problem of impact force during mold flipping and demolding was solved, achieving low-impact demolding and high-efficiency production, while reducing steel consumption and production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XINYU UNIV
- Filing Date
- 2026-03-10
- Publication Date
- 2026-05-12
AI Technical Summary
Existing molds for recycled concrete generate significant impact during demolding, leading to ground damage and issues such as concrete blocks sticking to the mold and developing micro-cracks.
By employing a detachable rolling ring and a buffer mechanism, and through the design of the mold assembly's center of gravity and the coordination of the buffer mechanism, the mold assembly is slowly lowered and oscillated for demolding, reducing impact and preventing sticking and cracking.
It effectively avoids ground crushing and early micro-cracks in precast concrete blocks, improves demolding efficiency, and reduces steel consumption and production costs.
Smart Images
Figure CN122008392A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of concrete shaping technology, and in particular to a shaping device for preparing recycled concrete. Background Technology
[0002] Waste concrete is crushed, screened, and washed to produce recycled aggregate, which is then used for prefabricated road barriers. This not only disposes of large quantities of demolition and construction solid waste but also reduces the mining of natural sand and gravel, significantly lowering carbon emissions and material costs. Recycled concrete prefabricated barriers need to be rapidly poured, shaped, and demolded in a factory before being transported to the site for installation. The production process generally uses steel molds for shaping, compaction, curing, and then demolding to achieve mass prefabrication. The molds, as key tools in the forming of recycled concrete barriers, combine load-bearing, shaping, and transport functions, and can typically be reused hundreds to thousands of times. They are integrated with processes such as flipping, stacking, and hoisting to form a highly efficient prefabrication production line.
[0003] When the mold for setting up traffic barriers is fully loaded with concrete, its overall weight often reaches several hundred kilograms. It often requires the use of overhead cranes or forklifts to push and flip it for demolding. The peak impact of the bottom of the mold hitting the ground can be several times that of the static load. The mold for setting up traffic barriers does not receive effective cushioning during the flipping and demolding process. The impact not only easily crushes the ground locally, but also causes surface micro-cracks and root micro-cracks in the early-stage low-strength recycled concrete of the barrier. After subsequent freeze-thaw cycles, the cracks expand rapidly, reducing the service life. Moreover, traditional molds often rely solely on their own weight to achieve separation after flipping. Because recycled concrete has strong interfacial bonding, it often sticks to the mold, requiring multiple manual tapping of the side plates. Frequent tapping and vibration can further induce micro-cracks, creating a vicious cycle of quality issues. Therefore, those skilled in the art have provided a setting device for the preparation of recycled concrete to solve the problems mentioned in the background art. Summary of the Invention
[0004] The purpose of this invention is to address the problem that the impact force of mold flipping and demolding is large but not effectively buffered, and that concrete precast blocks often rely solely on their own weight to separate after flipping, resulting in problems such as sticking to the mold and cracking of the finished product. Therefore, this invention proposes a molding device for the preparation of recycled concrete.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a molding device for preparing recycled concrete, comprising a mold assembly, wherein both ends of the mold assembly are detachably connected to an assembly bracket, and the assembly bracket is connected to a rolling ring via a buffer mechanism. Before demolding, the projection of the top edge line of the mold assembly on the vertical plane falls within the inner circle of the rolling ring. The common center of gravity of the mold assembly and the concrete block inside it is always lower than the central axis of the rolling ring after flipping. The buffer mechanism is used to provide downward buffer force for the mold assembly during flipping and demolding. The rolling ring is used to guide the mold assembly to flip and make it land slowly on the ground with the help of the buffer mechanism during the inversion process.
[0006] As a further description of the above-mentioned shaping device for preparing recycled concrete: The assembly support includes two sets of parallel frame plates, which are connected to a buffer mechanism. A vertical plate for docking the mold assembly is welded between the two sets of frame plates, and a locking component for connecting the mold assembly and the vertical plate is installed on the vertical plate.
[0007] As a further description of the above-mentioned shaping device for preparing recycled concrete: Two sets of parallel U-shaped steel bars are welded to both ends of the mold assembly. Multiple sets of vertical plates that are snapped onto the sides of the U-shaped steel bars are welded to the frame plate. Through-holes for locking components are provided on both the vertical plates and the U-shaped steel bars.
[0008] As a further description of the above-mentioned shaping device for preparing recycled concrete: The locking component includes two sets of parallel support rods welded to the vertical plate. Two sets of push plates are slidably mounted on the support rods. Insert rods for penetrating through the insertion holes on the vertical plate and the U-shaped steel bar are welded on the push plates. A control component for controlling the displacement of the two sets of push plates in opposite directions is installed on the vertical plate.
[0009] As a further description of the above-mentioned shaping device for preparing recycled concrete: The control component includes a bidirectional threaded rod rotatably mounted between two sets of vertical plates. Both sets of push plates are threadedly connected to the bidirectional threaded rod, and a central turntable is welded to the center of the bidirectional threaded rod.
[0010] As a further description of the above-mentioned shaping device for preparing recycled concrete: The buffer mechanism includes multiple sets of shock absorbers that can be detachably installed between the frame plate and the rolling ring, and multiple sets of round rods that slide through the frame plate are welded to the inner ring of the rolling ring.
[0011] As a further description of the above-mentioned shaping device for preparing recycled concrete: Multiple sets of reinforcing plates are welded between the round rod and the rolling ring.
[0012] As a further description of the above-mentioned shaping device for preparing recycled concrete: One set of the frame plates has movable parts slidably installed at both ends, and the frame plates are equipped with adjusting parts for controlling the raising and lowering of the movable parts.
[0013] As a further description of the above-mentioned shaping device for preparing recycled concrete: The movable component includes an auxiliary rod that is slidably mounted on the end of the frame plate. The bottom end of the auxiliary rod is welded with a horizontal plate that connects to the adjusting component. Both ends of the horizontal plate are detachably mounted with casters.
[0014] As a further description of the above-mentioned shaping device for preparing recycled concrete: The adjusting component includes an adjusting screw rotatably mounted on a frame plate, a movable plate threadedly connected to the adjusting screw, and sliding rods that slide through the ends of the frame plate welded to both ends of the movable plate. The sliding rods are connected to a cross plate through multiple sets of hinged connecting rods, and an end turntable is fixedly mounted at the end of the adjusting screw.
[0015] In summary, due to the adoption of the above-mentioned shaping device for preparing recycled concrete, the beneficial effects of the present invention are: This invention employs a detachable rolling ring and a locking mechanism for easy opening and closing. Two sets of rolling rings can be reused in multiple molds, eliminating the need for the semi-circular flipping brackets that require full welding to the side walls of existing molds. This effectively reduces steel consumption during mass production of the forming device, as well as inventory and transfer space. When the rolling ring assists in the flipping and demolding of the mold assembly, its arc-shaped section in contact with the ground, combined with a buffer mechanism, transforms the flipping and demolding process from a hard impact as in existing technologies to a slow descent. This effectively prevents the crushing of the floor and the induction of early micro-cracks. Simultaneously, the final buffer mechanism provides an upward lifting force. After the mold assembly and its internal concrete blocks are flipped, they can also swing to loosen the shell. The tumbler-like swing generates low-frequency alternating stress, pre-breaking the interface bonding. This, combined with the shock absorber's rebound and lifting, reduces demolding resistance, avoiding frequent hammering for demolding and eliminating the need for manual prying, thus effectively improving work efficiency. Attached Figure Description
[0016] Figure 1 This is a first schematic diagram of the overall structure of the present invention; Figure 2 This is a second schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the mold assembly structure of the present invention; Figure 4 This is a first schematic diagram of the structure of the tumbling ring, assembly bracket, buffer mechanism, moving part and adjusting part of the present invention; Figure 5 This is a second schematic diagram of the structure of the tumbling ring, assembly bracket, buffer mechanism, moving part and adjusting part of the present invention; Figure 6 This is a schematic diagram of the structure of the tumbling ring, assembly bracket, and buffer mechanism of the present invention; Figure 7This is a schematic diagram of the structure of the moving part and the adjusting part of the present invention; Figure 8 for Figure 5 Enlarged view of structure A in the middle.
[0017] Legend: 10. Mold assembly; 11. Rolling ring; 12. U-shaped steel bar; 13. Insertion hole; 14. Reinforcing plate; 20. Assembly bracket; 201. Shelf plate; 202. Vertical plate; 203. Locking component; 2031. Support rod; 2032. Push plate; 2033. Insert rod; 2034. Control component; 20341. Two-way threaded rod; 20342. Central turntable; 30. Buffer mechanism; 301. Shock absorber; 302. Round rod; 40. Moving parts; 401. Auxiliary rods; 402. Horizontal plates; 403. Casters; 50. Adjusting component; 501. Adjusting screw; 502. Moving plate; 503. Slide rod; 504. Connecting rod; 505. End turntable. Detailed Implementation
[0018] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a shaping device for preparing recycled concrete according to the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] like Figures 1-8 As shown, the present invention provides a molding device for preparing recycled concrete, including a mold assembly 10. The mold assembly 10 is typically top-heavy, facilitating the pouring of concrete slurry to precast isolation blocks and making it easier to subsequently flip and demold the mold containing the concrete. The end caps of the mold assembly 10 can be detachably connected by bolts, further improving the ease of subsequent demolding and preventing the formed concrete block from getting stuck in the mold. Assembly brackets 20 are detachably connected to both ends of the mold assembly 10. The assembly brackets 20 are connected to a rolling ring 11 via a buffer mechanism 30. The common center of gravity of the mold assembly 10 and the concrete block inside it remains below the central axis of the rolling ring 11 after flipping. The buffer mechanism 30 provides downward cushioning force for the mold assembly 10 during flipping and demolding, and the rolling ring 11 assists in flipping the mold assembly 10 and allows the mold assembly 10 to slowly contact the ground during the inversion process via the buffer mechanism 30.
[0020] After the precast concrete components inside the mold assembly 10 are formed, the operator can fix and assemble the rolling rings 11 at both ends of the mold assembly 10. The rolling rings 11 are connected to the outer side of the end caps of the mold assembly 10 through the assembly brackets 20 set inside them. Initially, the bottom edge of the rolling rings 11 and the bottom of the mold assembly 10 are both supported on the ground. At this time, the top edge of the mold assembly 10 projected onto the vertical plane is located in the inner circle of the rolling rings 11. With the help of external equipment such as overhead cranes or forklifts, a certain pushing force is applied from one side of the mold assembly 10 near the top position. The mold assembly 10 and the precast concrete blocks inside it can be flipped under the action of their gravity, so that the rolling rings 11 at both ends of the mold assembly 10 roll on the ground.
[0021] When the mold assembly 10 drives the rolling ring 11 to roll, its center of gravity shifts rapidly downwards. At this time, the entire device is similar to the principle of a roly-poly toy. Before the bottom edge of the mold assembly 10 after flipping moves to the outer ring of the rolling ring 11, the entire device swings slightly left and right on the ground. At the same time, the mold assembly 10 applies pressure to the buffer mechanism 30, which can slowly move the mold assembly 10 and its internal concrete blocks to contact the ground, thereby preventing the precast concrete from flipping and hitting the ground during demolding, which would damage the ground and easily cause cracks in the concrete itself.
[0022] Before the mold assembly 10 lands smoothly, it causes the precast concrete block inside to swing. The low-frequency alternating stress generated by the swing can cause fatigue micro-cracks in the bonding layer between the concrete and the steel mold, effectively reducing adhesion and achieving initial loosening without hammering. During the swing, the center of gravity of the concrete continuously shifts relative to the mold, forming a periodic self-prying torque, which assists in the natural separation of the demolding slope and reduces the probability of sticking. The swing can also cause uniform micro-gaps to be generated on all sides of the concrete at the same time, avoiding local vacuum adsorption or edge tearing caused by single-point forced demolding, thus improving the integrity of the finished product. After the bottom of the precast concrete block is supported on the ground, the previously stored buffer mechanism 30 can generate an upward lifting force for the mold assembly 10, which can further improve the separation efficiency of the precast concrete block and the mold assembly 10, and avoid lifting the precast concrete block inside when using cranes or other components to lift the mold assembly 10 for transfer.
[0023] The two detachable sets of rolling rings 11 and their connecting components can be installed and replaced on the next set of mold assemblies 10 after assisting in the flipping and demolding of one set of mold assemblies 10. This eliminates the need to weld ring-shaped components for assisting flipping onto each set of mold assemblies 10. This effectively reduces the amount of steel used when producing batches of mold assemblies 10 and also reduces the space occupied during the transfer of batch mold assemblies 10, thereby lowering the cost of precast concrete. The device is particularly suitable for producing small and medium-sized isolation piers.
[0024] In one embodiment, such as Figures 1-6As shown, specifically, the assembly bracket 20 includes two sets of parallel frame plates 201, and a vertical plate 202 for connecting the mold assembly 10 is welded between the two sets of frame plates 201. Both the frame plates 201 and the vertical plates 202 are made of high-strength thick steel plate material. Locking components 203 for connecting the mold assembly 10 and the vertical plates 202 are installed on the vertical plates 202. Two sets of parallel U-shaped steel bars 12 are welded to both ends of the mold assembly 10. Multiple sets of vertical plates 202 are welded to the sides of the U-shaped steel bars 12 on the frame plates 201. Both the vertical plates 202 and the U-shaped steel bars 12 have through insertion holes 13 for the locking components 203. The locking components 203 can pass through the insertion holes 13 of the U-shaped steel bars 12 and the vertical plates 202 to achieve a high-strength connection between the U-shaped steel bars 12 and the vertical plates 202.
[0025] Based on the above embodiments, to achieve a rapid and high-strength connection between the U-shaped steel bar 12 and the vertical plate 202, the locking component 203 includes two sets of parallel support rods 2031 welded to the vertical plate 202. Two sets of push plates 2032 are slidably mounted on the support rods 2031. Insert rods 2033 for penetrating the insertion holes 13 on the vertical plate 202 and the U-shaped steel bar 12 are welded onto the push plates 2032. A control component 2034 for controlling the displacement of the two sets of push plates 2032 in opposite directions is installed on the vertical plate 202. The control component 2034 includes a bidirectional threaded rod 20341 rotatably mounted between the two sets of vertical plates 202. The rotatable connection between the components can be achieved through bearings. Both sets of push plates 2032 are threadedly connected to the bidirectional threaded rod 20341. A central turntable 20342 is welded to the center of the bidirectional threaded rod 20341.
[0026] During the assembly of the bracket 20 and the mold assembly 10, the rolling ring 11 and its internal components move to the corresponding end of the mold assembly 10. The rolling ring 11 is pushed so that the vertical plate 202 is snapped onto both sides of the U-shaped steel bar 12, with the insertion holes 13 inside corresponding to each other. The operator rotates the central turntable 20342 to drive the bidirectional threaded rod 20341 to rotate. The bidirectional threaded rod 20341 can drive the two sets of push plates 2032 on it to move in opposite directions. The push plates 2032 can move in opposite directions so that the connected insertion rod 2033 can pass through the corresponding U-shaped steel bar 12 and the vertical plate 202. This allows for simultaneous and rapid multi-point synchronous connection of the U-shaped steel bar 12 and the vertical plate 202, facilitating the rapid assembly of the rolling ring 11 and its internal components onto the corresponding mold assembly 10 for use.
[0027] The mounting plate 201 of the assembly bracket 20 is connected to the buffer mechanism 30, such as... Figures 1-6As shown in detail, the buffer mechanism 30 includes multiple sets of shock absorbers 301 detachably installed between the frame plate 201 and the rolling ring 11. Multiple sets of round rods 302, which slide through the frame plate 201, are welded to the inner ring of the rolling ring 11. Before the rolling ring 11 is flipped after connecting to the mold assembly 10, the shock absorbers 301 located at the bottom and top of both sets of frame plates 201 are pressurized. After the rolling ring 11 and the mold assembly 10 are flipped, the shock absorber 301 located at the bottom is further pressurized due to the weight of the mold assembly 10 and its internal concrete. The shock absorber 301 at the top can slowly return to its original position after the flip. This effectively assists the mold assembly 10 and its internal concrete to slowly move downwards during the swinging process, reducing the impact on itself and the ground. When the mold assembly 10 moves relative to the rolling ring 11, the mold assembly 10 can drive the frame plate 201 to slide on the round rod 302 via the U-shaped steel bar 12 and the vertical plate 202. A linear bearing can be installed on the frame plate 201 to improve the stability of the frame plate 201 sliding on the round rod 302. Furthermore, multiple sets of reinforcing plates 14 are welded between the round rod 302 and the rolling ring 11 to improve the support strength of the rolling ring 11 and the assembly bracket 20.
[0028] In one embodiment, to facilitate the transfer of the rear roll ring 11 and its connecting gear, such as Figures 1-8 As shown, each end of a set of support plates 201 is equipped with a movable component 40 that slides vertically up and down, and the support plate 201 is equipped with an adjusting component 50 for controlling the raising and lowering of the movable component 40. When the rolling ring 11 needs to be transferred, the bottom of the movable component 40 is supported on the ground, making it convenient for workers to push the device for transfer. When the rolling ring 11 is being flipped for use, the movable component 40 can be retracted to its inner ring to avoid affecting the flipping of the rolling ring 11. When using the shaping device to produce small and medium-sized isolation piers, the movable component 40 and the rolling ring 11 can also be used to move unused mold components 10. At the same time, the buffer mechanism 30 connected to the support plate 201, which is mounted on the movable component 40, can also provide a certain shock absorption effect when the movable component 40 moves the rolling ring 11 and mold components 10.
[0029] Specifically, the movable component 40 includes an auxiliary rod 401 that is slidably mounted on the end of the frame plate 201. A horizontal plate 402 for connecting the adjusting component 50 is welded to the bottom of the auxiliary rod 401. Both ends of the horizontal plate 402 are detachably mounted with casters 403. Correspondingly, the adjusting component 50 includes an adjusting screw 501 rotatably mounted on the frame plate 201. A movable plate 502 is threadedly connected to the adjusting screw 501. Both ends of the movable plate 502 are welded with sliding rods 503 that slide through the end of the frame plate 201. The sliding rods 503 are connected to the horizontal plate 402 through multiple sets of hinged connecting rods 504. An end turntable 505 is fixedly mounted on the end of the adjusting screw 501.
[0030] The operator rotates the end turntable 505, which drives the adjusting screw 501 to rotate. The adjusting screw 501 can drive the moving plate 502 to move left and right. The moving plate 502 drives the slide rod 503 to slide within the end of the frame plate 201. The moving slide rod 503 can drive the horizontal plate 402 to move up and down through the connecting rod 504. The horizontal plate 402 drives the auxiliary rod 401 and the caster wheel 403 to move up and down, making it convenient to adjust the height of the caster wheel 403.
[0031] This invention achieves demolding that integrates rolling, swinging, slow release and lifting through the synergistic design of the detachable rolling ring 11 and the buffer shock absorption. It can significantly reduce steel consumption, ground impact and component damage, and the shaping device is also more versatile and convenient for on-site operation.
[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technology and inventive concept, should be covered within the scope of protection of the present invention.
Claims
1. A shaping device for preparing recycled concrete, comprising a mold assembly (10), characterized in that: Both ends of the mold assembly (10) are detachably connected to an assembly bracket (20). The assembly bracket (20) is connected to a rolling ring (11) through a buffer mechanism (30). Before flipping and demolding, the projection of the top edge line of the mold assembly (10) on the vertical plane falls within the inner circle of the rolling ring (11). The common center of gravity of the mold assembly (10) and its internal concrete block is always lower than the central axis of the rolling ring (11) after flipping. The buffer mechanism (30) is used to provide a downward buffer force for the mold assembly (10) during the flipping demolding. The rolling ring (11) is used to guide the mold assembly (10) to flip and make it land slowly with the help of the buffer mechanism (30) during the inversion process.
2. The shaping device for preparing recycled concrete according to claim 1, characterized in that: The assembly bracket (20) includes two sets of parallel rack plates (201), the rack plates (201) are connected to the buffer mechanism (30), and a vertical plate (202) for docking the mold assembly (10) is welded between the two sets of rack plates (201). A locking member (203) for connecting the mold assembly (10) and the vertical plate (202) is installed on the vertical plate (202).
3. The shaping device for preparing recycled concrete according to claim 2, characterized in that: Two sets of parallel U-shaped steel bars (12) are welded to both ends of the mold assembly (10). Multiple sets of vertical plates (202) that are snapped onto the side of the U-shaped steel bars (12) are welded to the frame plate (201). Insertion holes (13) for locking parts (203) to pass through are provided on both the vertical plates (202) and the U-shaped steel bars (12).
4. The shaping device for preparing recycled concrete according to claim 3, characterized in that: The locking component (203) includes two sets of parallel support rods (2031) welded to the vertical plate (202). Two sets of push plates (2032) are slidably mounted on the support rods (2031). Insert rods (2033) for penetrating through the insertion holes (13) on the vertical plate (202) and the U-shaped bar (12) are welded on the push plates (2032). A control component (2034) for controlling the displacement of the two sets of push plates (2032) in opposite directions is installed on the vertical plate (202).
5. The shaping device for preparing recycled concrete according to claim 4, characterized in that: The control component (2034) includes a bidirectional threaded rod (20341) rotatably mounted between two sets of vertical plates (202). Both sets of push plates (2032) are threadedly connected to the bidirectional threaded rod (20341). A central turntable (20342) is welded to the center of the bidirectional threaded rod (20341).
6. The shaping device for preparing recycled concrete according to claim 2, characterized in that: The buffer mechanism (30) includes multiple sets of shock absorbers (301) that can be detachably installed between the frame plate (201) and the rolling ring (11), and the inner ring of the rolling ring (11) is welded with multiple sets of round rods (302) that slide through the frame plate (201).
7. The shaping device for preparing recycled concrete according to claim 6, characterized in that: Multiple sets of reinforcing plates (14) are welded between the round rod (302) and the rolling ring (11).
8. A shaping device for preparing recycled concrete according to any one of claims 2-7, characterized in that: One of the sets of the frame plates (201) has movable parts (40) that are slidably installed at both ends, and the frame plate (201) is equipped with an adjusting part (50) for controlling the lifting and lowering of the movable parts (40).
9. A shaping device for preparing recycled concrete according to claim 8, characterized in that: The movable component (40) includes an auxiliary rod (401) that is slidably mounted on the end of the frame plate (201). The bottom end of the auxiliary rod (401) is welded with a horizontal plate (402) that connects to the adjusting component (50). Both ends of the horizontal plate (402) are detachably mounted with casters (403).
10. A shaping device for preparing recycled concrete according to claim 9, characterized in that: The adjusting component (50) includes an adjusting screw (501) rotatably mounted on the frame plate (201), a movable plate (502) threadedly connected to the adjusting screw (501), and sliding rods (503) that slide through the ends of the frame plate (201) welded to both ends of the movable plate (502). The sliding rods (503) are connected to the cross plate (402) through multiple sets of hinged connecting rods (504). An end turntable (505) is fixedly mounted at the end of the adjusting screw (501).