Construction steel bar crushing and recycling device

Abstract

The utility model discloses a building steel bar crushing and recycling device, relates to the related field of steel bar crushing and recycling, and aims to solve the problems that in the prior art, knocked-out concrete blocks are broken under acting force, and part of the concrete blocks adhered to steel bar pointing joints are difficult to remove through rotation of crushing rollers; and repeated crushing treatment is needed for multiple times. A plurality of crushing impact assemblies are arranged on the inner fixing ring, a supporting disc is fixed to the outer end between every two fixing arc-shaped plates in each pair, an action rod is slidably connected into each supporting disc, an impact head is fixed to the inner end of each action rod, and limiting plates are fixed to the outer portion of each action rod along the outer end and the inner end of the inner fixing ring; a pressure spring is arranged between the supporting disc and the limiting plate at the outer end along the outer portion of the action rod. The driving rotating assembly comprises an inner wheel, the inner surface of the inner wheel is arranged to be provided with alternate arc-shaped convex parts and arc-shaped concave parts, and the action rod makes contact with the inner surface of the inner wheel.

Description

Technical Field

[0001] This utility model relates to the field of steel bar crushing and recycling, specifically a steel bar crushing and recycling device for buildings. Background Technology

[0002] In the construction industry, steel reinforcement is a primary structural material with a huge demand. However, with the continuous advancement of construction projects, the generation of scrap steel reinforcement is inevitable. If this scrap steel reinforcement is not properly disposed of, it will not only waste resources but may also pollute the environment. Therefore, scrap steel reinforcement recycling is particularly important. Scrap steel reinforcement recycling is not a simple matter of collection and transportation; it involves a rigorous and meticulous process. First, in the collection stage, recycling personnel shuttle between construction sites and demolition sites, carefully sorting scrap steel reinforcement, classifying and organizing steel reinforcement of different specifications and varying degrees of damage, and initially removing a large amount of attached concrete and debris to reduce the burden on subsequent processing. After collection, the scrap steel reinforcement is transported to a recycling plant for pre-processing, through crushing, impurity removal, and other processes to obtain relatively pure scrap steel reinforcement raw materials. Next is smelting and remanufacturing, where the scrap steel reinforcement is put into a high-temperature furnace for melting. During this process, the temperature is precisely controlled, and appropriate alloying elements are added to improve the performance of the recycled steel, remove impurities, and make it meet the standards for construction steel. Finally, after shaping and processing, the recycled steel reinforcement can be reused in construction projects.

[0003] In practice, scrap steel bars often appear alongside concrete clumps, posing a significant challenge to recycling. This necessitates using various driving components to crush the concrete and recover the steel bars within. However, many methods for crushing and recycling construction steel bars rely solely on a single set of crushing rollers to break up the surface concrete. For example, Chinese Patent No. CN 212167688U (A Steel Bar Processing Waste Recycling Device) includes a base plate, a first support plate, and a crushing device. Two first support plates are fixedly connected to the surface of the base plate, and a crushing device is positioned between the two first support plates. The crushing device includes two crushing rollers, each with a blade strip fixedly connected to its surface. The blade strip has an arc-shaped groove and uniformly distributed teeth. A motor is located on the side of the first support plate away from the crushing device, and the motor's output is fixedly connected to the crushing rollers. In this invention, when the steel bar encounters the surface of the crushing rollers, the teeth on the crushing rollers break up the concrete clumps on the steel bar.

[0004] Although the aforementioned existing technology has the function of crushing concrete blocks outside the reinforcing bars, the concrete blocks that are knocked off are broken by force, and some concrete blocks that are attached to the joints of the reinforcing bars are difficult to remove by the rotation of the crushing roller, and the crushing process needs to be repeated many times. Utility Model Content

[0005] The purpose of this invention is to provide a building steel bar crushing and recycling device to solve the problem mentioned in the background art that the concrete blocks to be removed are broken by force, and some concrete blocks that are attached to the steel bar joints are difficult to remove by the rotation of the crushing roller, requiring repeated crushing processes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a building steel bar crushing and recycling device, comprising a crushing shell, an inner fixing ring centrally located on one side of the crushing shell, and outer fixing rings fixed on both sides between the inner fixing ring and the crushing shell; multiple sets of crushing impact components are arranged on the inner fixing ring, each set of crushing impact components having four components arranged in a circular array, the multiple sets of crushing impact components being arranged left and right with different installation angles, each crushing impact component including a fixed arc-shaped plate fixed to the outside of the inner fixing ring, a support plate fixed to the outer end between each pair of two fixed arc-shaped plates, an actuating rod slidably connected inside the support plate, an impact head fixed to the inner end of the actuating rod, a limit plate fixed to both the outer and inner ends of the actuating rod along the inner and outer ends of the inner fixing ring, a pressure spring arranged between the support plate and the outer limit plate along the outside of the actuating rod; a driving rotation component is arranged outside between the two outer fixing rings, the driving rotation component including an inner wheel, the inner surface of the inner wheel being configured with alternating arc-shaped protrusions and arc-shaped concave portions, the actuating rod contacting the inner surface of the inner wheel.

[0007] Preferably, the outer end of the actuating rod forms an arc-shaped portion that fits against the inner surface of the inner wheel; the end face of the limiting plate facing the inner fixing ring is an arc-shaped surface; there are multiple inner wheels, and the inner wheels are located outside each set of the crushing and impact components.

[0008] Preferably, a first drive motor is installed on the upper end of the crushing shell, a first drive gear is installed on the output shaft end of the first drive motor, and the drive rotation assembly further includes an external gear ring, which is fixed to the outside of the plurality of inner wheels. A rectangular groove is opened on the upper surface of the crushing shell along the outside of the external gear ring. The external gear ring is rotatably connected to the outer fixed ring and meshes with the first drive gear.

[0009] Preferably, an inner crushing roller is rotatably connected to both the front and rear ends of the feed end inside the crushing shell. The outer surface of the inner crushing roller has an arc surface in the middle, and crushing protrusions are fixed in an array outside the inner crushing roller.

[0010] Preferably, the middle axis of the inner crushing roller extends upward to the upper end of the crushing shell and is fixed with a second drive gear. The two second drive gears are meshed and connected. A second drive motor is also installed at the upper end of the crushing shell. A first bevel gear is installed at the output shaft end of the second drive motor. A second bevel gear is meshed and connected to the outer side of the first bevel gear. The second bevel gear is coaxially connected to the middle axis of the rear end of the inner crushing roller.

[0011] Preferably, a lower collection box is fixed to the lower end of the crushing shell, and discharge troughs are opened on both sides of the lower end face of the crushing shell along the upper end of the lower collection box. A collection channel is formed inside the lower collection box, and a discharge slot is opened on the side of the lower collection box along the end of the collection channel.

[0012] Preferably, the feed inlet of the crusher shell is centrally located on the side of the feed end, and the discharge inlet of the crusher shell is centrally located on the side of the discharge end.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the drive rotating component is driven to rotate. When the arc-shaped protrusion contacts the arc-shaped part, the action rod slides along the inner fixed ring. The impact head impacts the outside of the steel bar. When the arc-shaped concave part corresponds to the arc-shaped part, the pressure spring causes the action rod to reset. The arc-shaped concave part and the arc-shaped part are in contact. The impact head moves away from the steel bar and continuously impacts the outside of the building steel bar. The impact direction is multiple, so that the concrete attached to the surface of the steel bar is broken and falls off under the impact. This solves the problem that the concrete blocks that are currently knocked off are broken by the force. Some concrete blocks that are attached to the steel bar joints are difficult to remove by the rotation of the crushing roller and need to be crushed repeatedly.

[0015] (2) In this utility model, there is a combination of two crushing methods. By setting the inner crushing roller and the crushing protrusion, the concrete on the surface of the building steel bars is initially crushed, which improves the efficiency of subsequent processing. At the same time, the combination of the crushing impact component and the driving rotation component enables the impact head to continuously impact the outside of the building steel bars, further knocking away the surface concrete and achieving efficient crushing.

[0016] (3) In this utility model, the setting of the inner fixing ring, the outer fixing ring, the support plate and other structures enables the crushing impact component to be stably installed inside the crushing shell, ensuring stability and reliability during operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a building steel bar crushing and recycling device from the main perspective of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of a building steel bar crushing and recycling device from another side view.

[0019] Figure 3 This is a front view of a steel bar crushing and recycling device according to the present invention;

[0020] Figure 4 This is a cross-sectional view at point AA of a steel bar crushing and recycling device according to this utility model;

[0021] Figure 5 This is a schematic diagram of the drive rotating component of a building steel bar crushing and recycling device according to the present invention;

[0022] Figure 6 This is a schematic diagram of the crushing and impact component of a building steel bar crushing and recycling device according to the present invention;

[0023] Figure 7 This is a cross-sectional view at point BB of a steel bar crushing and recycling device according to this utility model;

[0024] Figure 8 This is a top view of a steel bar crushing and recycling device according to the present invention;

[0025] Figure 9 This is a cross-sectional view at point C of a steel bar crushing and recycling device according to the present invention.

[0026] In the diagram: 1. Crushing shell; 2. Feed chute; 3. Discharge chute; 4. Lower collection box; 5. Collection channel; 6. Discharge chute; 7. Outer fixing ring; 8. Inner fixing ring; 9. Crushing impact assembly; 10. Fixed arc plate; 11. Support plate; 12. Action rod; 13. Impact head; 14. Limiting plate; 15. Pressure spring; 16. Arc-shaped part; 17. Drive rotation assembly; 18. Outer gear ring; 19. Inner wheel; 20. Arc-shaped protrusion; 21. Arc-shaped concave part; 22. First drive motor; 23. First drive gear; 24. Inner crushing roller; 25. Crushing protrusion; 26. Second drive gear; 27. Second drive motor; 28. First bevel gear; 29. ​​Second bevel gear. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figures 1-9 One embodiment of this utility model is a building steel bar crushing and recycling device. Inside the crushing shell 1, an inner fixing ring 8 is fixed by two outer fixing rings 7. Multiple sets of crushing impact components 9 are arranged on the inner fixing ring 8. Each set of crushing impact components 9 has four in a circular array. The multiple sets of crushing impact components 9 are arranged left and right with different installation angles to achieve all-round and multi-angle impact crushing.

[0029] like Figure 4 , Figure 5 , Figure 6 and Figure 9As shown, the crushing impact assembly 9 includes a fixed arc-shaped plate 10 fixed to the outside of the inner fixed ring 8, and a support plate 11 fixed at the outer end between each pair of fixed arc-shaped plates 10. An actuating rod 12 is slidably connected inside the support plate 11. An impact head 13 is fixed at the inner end of the actuating rod 12, and an arc-shaped portion 16 is formed at the outer end of the actuating rod 12. Limiting plates 14 are fixed to both the outer and inner ends of the inner fixed ring 8 along the outside of the actuating rod 12. The end face of the limiting plate 14 facing the inner fixed ring 8 is an arc-shaped surface, limiting the sliding range of the actuating rod 12. A pressure spring 15 is provided between the support plate 11 and the outer limiting plate 14 along the outside of the actuating rod 12 to provide elastic force for the reset of the actuating rod 12.

[0030] like Figure 4 , Figure 5 and Figure 9 As shown, a drive rotation assembly 17 is provided outside between the two outer fixed rings 7, including multiple inner wheels 19. The inner surface of the inner wheel 19 is configured with alternating arc-shaped protrusions 20 and arc-shaped concave portions 21. The arc-shaped portion 16 fits against the inner surface of the inner wheel 19 and slides inward and outward as the inner wheel 19 rotates.

[0031] like Figures 1-5 As shown, a first drive motor 22 is installed on the upper end of the crushing shell 1, and a first drive gear 23 is installed on the output shaft end of the first drive motor 22. The drive rotation assembly 17 also includes an external gear ring 18, which is fixed to the outside of multiple inner wheels 19. A rectangular groove is formed on the upper surface of the crushing shell 1 along the outside of the external gear ring 18. The external gear ring 18 is rotatably connected to the outer fixed ring 7 and meshes with the first drive gear 23, thereby realizing the drive of the drive rotation assembly 17 by the first drive motor 22.

[0032] like Figures 1-3 as well as Figures 7-9 As shown, a second drive motor 27 is installed at the upper end of the crushing shell 1. A first bevel gear 28 is installed at the output shaft end of the second drive motor 27, and a second bevel gear 29 is meshed with the outer side of the first bevel gear 28. Inner crushing rollers 24 are rotatably connected to both the front and rear ends of the feed end inside the crushing shell 1. The outer surface of the inner crushing roller 24 has a curved middle surface, and the outer array of fixed crushing protrusions 25 is arranged. The central axis of the inner crushing roller 24 extends upward to the upper end of the crushing shell 1 and fixes a second drive gear 26. The two second drive gears 26 mesh with each other. The second bevel gear 29 is coaxially connected to the central shaft of the rear inner crushing roller 24, realizing synchronous reverse drive of the inner crushing roller 24 by the second drive motor 27.

[0033] like Figures 1-4 and Figure 9As shown, a lower aggregate box 4 is fixed at the lower end of the crushing shell 1. Discharge troughs are opened on both sides of the lower end face of the crushing shell 1 along the upper end of the lower aggregate box 4 to facilitate the crushed concrete falling into the lower aggregate box 4. An aggregate channel 5 is formed inside the lower aggregate box 4, and a discharge trough 6 is opened on the side along the end of the aggregate channel 5 to facilitate the collection and discharge of the crushed concrete.

[0034] like Figure 1 , Figure 2 and Figure 9 As shown, a feed slot 2 is centrally located on the side of the feed end of the crushing shell 1 for feeding building steel bars. A discharge slot 3 is centrally located on the side of the discharge end of the crushing shell 1 for discharging the crushed building steel bars.

[0035] Working principle: The reinforcing steel is inserted through the feed chute 2. As the steel passes between two rotating inner crushing rollers 24, the external crushing protrusions 25 of the inner crushing rollers 24 exert force on the steel, breaking off the concrete portion of the steel surface. Afterward, as the steel passes between the inner fixing rings 8, multiple actuating rods 12 alternately slide inward and outward, causing the impact head 13 to continuously strike the outside of the steel, knocking away the surface concrete. The falling concrete enters the lower collection box 4 through the discharge chute and is output from the discharge chute 6 through the collection channel 5.

[0036] The output of the second drive motor 27 drives the first bevel gear 28 to rotate, the second bevel gear 29 meshing with the first bevel gear 28 rotates, the second drive gear 26 coaxially connected with the second bevel gear 29 rotates and drives another second drive gear 26 to rotate in the opposite direction, the two inner crushing rollers 24 rotate in the opposite direction synchronously, and the concrete on the surface of the building steel reinforcement is crushed.

[0037] The first drive motor 22 outputs to drive the first drive gear 23 to rotate. The outer gear ring 18, which meshes with the first drive gear 23, drives the inner wheel 19 to rotate synchronously. Because the arc-shaped protrusion 20 and arc-shaped concave portion 21 on the inner surface of the inner wheel 19 are in contact with the arc-shaped portion 16, and the pressure spring 15 remains in an elastic state, when the arc-shaped protrusion 20 contacts the arc-shaped portion 16, the actuating rod 12 slides along the inner fixed ring 8, and the impact head 13 impacts the outside of the steel bar. When the arc-shaped concave portion 21 corresponds to the arc-shaped portion 16, the pressure spring 15 causes the actuating rod 12 to reset, the arc-shaped concave portion 21 contacts the arc-shaped portion 16, and the impact head 13 moves away from the steel bar, continuously impacting the outside of the building steel bar.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for crushing and recycling building steel bars, comprising a crushing shell (1), characterized in that: An inner fixing ring (8) is centrally located on one side of the inner shell (1), and outer fixing rings (7) are fixed on both sides between the inner fixing ring (8) and the inner shell (1). Multiple sets of crushing impact components (9) are provided on the inner fixing ring (8). Each set of crushing impact components (9) has four components in a circular array. The multiple sets of crushing impact components (9) are arranged left and right with different installation angles. Each crushing impact component (9) includes a fixed arc plate (10) fixed to the outside of the inner fixing ring (8). A support plate (11) is fixed at the outer end between each pair of two fixed arc plates (10). An actuating rod is slidably connected inside the support plate (11). (12) An impact head (13) is fixed to the inner end of the action rod (12). A limit plate (14) is fixed to both the outer end and the inner end of the inner fixed ring (8) of the action rod (12). A pressure spring (15) is provided between the support plate (11) and the limit plate (14) at the outer end along the outer side of the action rod (12). A drive rotation assembly (17) is provided between the two outer fixed rings (7). The drive rotation assembly (17) includes an inner wheel (19). The inner surface of the inner wheel (19) is configured with alternating arc-shaped protrusions (20) and arc-shaped concave parts (21). The action rod (12) contacts the inner surface of the inner wheel (19).

2. The steel reinforcement crushing and recycling device according to claim 1, characterized in that: The outer end of the actuating rod (12) forms an arc-shaped part (16), which fits the inner surface of the inner wheel (19); the end face of the limiting plate (14) facing the inner fixing ring (8) is an arc-shaped surface; there are multiple inner wheels (19), and the inner wheels (19) are located outside each set of the crushing impact assembly (9).

3. The steel reinforcement crushing and recycling device according to claim 1, characterized in that: The upper end of the crushing shell (1) is equipped with a first drive motor (22), and the output shaft end of the first drive motor (22) is equipped with a first drive gear (23). The drive rotation assembly (17) also includes an external gear ring (18). The external gear ring (18) is fixed to the outside of the multiple inner wheels (19). A rectangular groove is opened on the upper surface of the crushing shell (1) along the outside of the external gear ring (18). The external gear ring (18) is rotatably connected to the outer fixed ring (7), and the external gear ring (18) is meshed with the first drive gear (23).

4. The steel reinforcement crushing and recycling device according to claim 1, characterized in that: The inner crushing shell (1) is rotatably connected to the front and rear ends of the feed end. The inner crushing roller (24) has an arc surface in the middle of its outer surface and crushing protrusions (25) are fixed in an array on the outside of the inner crushing roller (24).

5. The steel reinforcement crushing and recycling device according to claim 4, characterized in that: The middle axis of the inner crushing roller (24) extends upward to the upper end of the crushing shell (1) and is fixed with a second drive gear (26). The two second drive gears (26) are meshed together. A second drive motor (27) is also installed at the upper end of the crushing shell (1). A first bevel gear (28) is installed at the output shaft end of the second drive motor (27). A second bevel gear (29) is meshed with the outer side of the first bevel gear (28). The second bevel gear (29) is coaxially connected with the middle shaft of the inner crushing roller (24) at the rear end.

6. The steel reinforcement crushing and recycling device according to claim 1, characterized in that: The lower end of the crushing shell (1) is fixed with a lower collection box (4). The two sides of the lower end face of the crushing shell (1) are provided with discharge troughs along the upper end of the lower collection box (4). The lower collection box (4) forms a collection channel (5) inside. The side of the lower collection box (4) is provided with a discharge trough (6) along the end of the collection channel (5).

7. The steel reinforcement crushing and recycling device according to claim 1, characterized in that: The crushing shell (1) has a feeding slot (2) in the center of the side of the feeding end, and a discharge slot (3) in the center of the side of the discharge end.

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