A waste concrete crushing device

Abstract

The utility model relates to concrete crushing technical field, and disclose a kind of waste concrete crushing device, including crusher main body, and the crusher main body is equipped with crushing box, further include: the crushing assembly of concrete crushing treatment, install in the inside of the crushing box;Material conveying component is installed on the crushing box, and material conveying component is sent to the crushing assembly center place;The utility model is fixed to the tapered block of roller before narrow and wide after, and when rotating, it is formed to grab point by piercing into concrete, cooperate with the double crushing head of front and back staggered, form hierarchical occlusion mechanism, avoid material rebound idling;Two roller crushing tooth annular staggered arrangement, ensure continuous crushing channel, improve granularity uniformity.Crushing head adopts threaded rod quick change design, significantly reduce maintenance cost.The tooth of inclined plate bottom accurately guide material to roller center, surface rubber plate absorbs impact energy, reduce bounce, improve swallowing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of concrete crushing technology, specifically to a waste concrete crushing device. Background Technology

[0002] Waste concrete, after being crushed, can be made into recycled aggregate for the production of new building materials, such as recycled concrete, cement products, and road hardening materials. If waste concrete is directly piled up or landfilled without treatment, it will occupy a large amount of land resources and may pollute the soil and water sources. Crushing can reduce the volume and weight of waste concrete, thus reducing its negative impact on the environment.

[0003] Commonly used concrete crushing equipment includes double-toothed roller crushers, but the traditional tooth shape is difficult to effectively "pierce" the concrete surface in the initial stage of rotation, and the material is prone to sliding or rebounding. Especially when dealing with high-hardness, large-sized concrete blocks, the failure rate of grabbing increases significantly. Moreover, after being compressed, the material is prone to detach from the toothed roller due to elastic deformation, resulting in frequent idling and reduced crushing efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a waste concrete crushing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waste concrete crushing device, comprising a crusher body, a crushing box installed on the crusher body, and further comprising: The crushing assembly for crushing concrete is installed inside the crushing chamber; The material is conveyed to the center of the crushing assembly by a conveying component, which is installed on the crushing box. The crushing box is also equipped with a baffle component to prevent material splashing. The conveying component and the baffle component are symmetrically installed on both sides of the crushing box. The crushing assembly includes a connecting shaft installed on the crushing box. A fixed roller is fixedly connected to the connecting shaft. Crushing teeth are fixedly connected to the outer side of the fixed roller. The crushing teeth include several conical blocks that are annularly welded to the outer side of the fixed roller. A first fixed rod and a second fixed rod are fixedly connected to the outer side of the conical blocks. Crushing heads are installed on both the first fixed rod and the second fixed rod.

[0006] Preferably, a threaded rod is fixedly connected to the crushing head, and the threaded rod is threadedly connected to the first fixed rod and the second fixed rod.

[0007] Preferably, the conveying assembly includes a fixed frame fixedly connected to the crushing box, an inclined plate welded onto the fixed frame, and teeth formed at the bottom of the inclined plate.

[0008] Preferably, a rubber plate is fixedly connected to the inclined plate to prevent material from bouncing.

[0009] Preferably, the baffle assembly includes a support frame welded to the crushing box, a baffle plate welded to the support frame, a fixing tooth fixedly connected to the baffle plate, and a crushing groove opened at the bottom.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model features a fixed roller with a conical block that is narrower at the front and wider at the back. During rotation, it "pierces" the concrete to form a gripping point. Combined with the staggered double crushing heads, this creates a graded biting mechanism, preventing material rebound and idle spinning. The crushing teeth of the two rollers are arranged in a staggered ring to ensure a continuous crushing channel and improve particle size uniformity. The crushing heads utilize a threaded rod design for quick replacement, significantly reducing maintenance costs. The teeth at the bottom of the inclined plate precisely guide the material to the center of the roller, while the surface rubber plate absorbs impact energy, reducing bounce and improving intake efficiency. Attached Figure Description

[0011] Figure 1 A schematic diagram of the main structure of the waste concrete crushing device provided by this utility model; Figure 2 A schematic diagram of the crushing component structure provided by this utility model; Figure 3 A schematic diagram of the crushing tooth structure provided by this utility model; Figure 4 This is a schematic diagram of the material conveying assembly structure provided by this utility model; Figure 5 A schematic diagram of the material blocking component provided by this utility model.

[0012] In the diagram: 1. Crusher body; 2. Crushing box; 3. Crushing assembly; 301. Connecting shaft; 302. Fixed roller; 303. Crushing teeth; 3031. Conical block; 3032. First fixed rod; 3033. Second fixed rod; 3034. Crushing head; 4. Threaded rod; 5. Conveying assembly; 501. Fixed frame; 502. Inclined plate; 503. Teeth; 6. Material blocking assembly; 601. Support frame; 602. Baffle; 603. Fixed teeth; 604. Crushing trough; 7. Rubber plate. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-5As shown, a waste concrete crushing device includes a crusher body 1, which is a double-toothed roller crusher, a publicly available technology. Its specific structure and working principle are common knowledge to those skilled in the art, and its combination application and parameter optimization are conventional technical means in this application, which will not be described in detail here. The crusher body 1 is equipped with a crushing box 2, and also includes: a crushing component 3 for crushing concrete, installed inside the crushing box 2, which crushes the concrete blocks in the crushing box 2; a conveying component 5 for conveying material to the center of the crushing component 3, installed on the crushing box 2; and a baffle component 6 for preventing material splashing, which is installed on the crushing box 2. The conveying component 5 and the baffle component 6 are symmetrically installed on both sides of the crushing box 2. The conveying component 5 conveys the material between the two crushing rollers to improve crushing efficiency, and the baffle component 6 can block the splashing of crushed stone during crushing.

[0015] It should be noted that the crushing roller adopts a design that is narrow at the front and wide at the back. When rotating, it "pierces" into the concrete to form a gripping point. Together with the staggered double crushing blocks, it forms a graded biting mechanism to prevent the material from rebounding and spinning idly, ensuring a continuous crushing channel and improving particle size uniformity.

[0016] The crushing assembly 3 includes a connecting shaft 301 mounted on the crushing box 2. A fixed roller 302 is fixedly connected to the connecting shaft 301, and crushing teeth 303 are fixedly connected to the outer side of the fixed roller 302. The crushing teeth 303 include several conical blocks 3031 annularly welded to the outer side of the fixed roller 302. A first fixed rod 3032 and a second fixed rod 3033 are fixedly connected to the outer side of the conical blocks 3031. Crushing heads 3034 are mounted on both the first fixed rod 3032 and the second fixed rod 3033. A threaded rod 4 is fixedly connected to the crushing head 3034, and the threaded rod 4 is threadedly connected to both the first fixed rod 3032 and the second fixed rod 3033. There are two connecting shafts 301, which pass through the crushing box 2 and are connected to the transmission equipment. The specific connection method can refer to the existing double-toothed roller crusher. The crusher features a ring array of crushing teeth 303 on two fixed rollers 302, with the teeth staggered to prevent contact. A first fixed rod 3032 and a second fixed rod 3033 are staggered and fixed to a conical block 3031, each with a crushing head 3034. The two staggered fixed rods contact the concrete block sequentially. Once the first crushing head 3034 contacts the concrete, the other immediately follows, ensuring continuous crushing and improving efficiency while preventing the concrete from losing pressure and spinning idly with the fixed rollers 302. The conical block 3031, narrow at the front and wide at the back, creates a "piercing" effect on the material surface, enhancing gripping stability. The crushing head 3034 is mounted on the fixed rod via a threaded rod 4, facilitating replacement after damage.

[0017] The material conveying assembly 5 includes a fixed frame 501 fixedly connected to the crushing box 2. An inclined plate 502 is welded to the fixed frame 501, and teeth 503 are provided at the bottom of the inclined plate 502. A rubber plate 7 is fixedly connected to the inclined plate 502 to prevent material from bouncing. The material is conveyed from the inclined plate 502 into the crushing box 2. When the inclined plate 502 is installed, its tilt angle is set so that the material can just slide down between the two crushing rollers, avoiding the accumulation or rebound of material at the edge of the feed port and improving the intake efficiency. The rubber plate 7 can reduce the bouncing of concrete blocks and improve the crushing efficiency.

[0018] The material blocking assembly 6 includes a support frame 601 welded to the crushing box 2. A baffle 602 is welded to the support frame 601. A fixing tooth 603 is fixedly connected to the baffle 602, and a crushing groove 604 is opened at the bottom. If a large concrete block falls into the crushing box 2, it will be stuck between the baffle 602 and the crushing roller to prevent the concrete block from bouncing. The fixing tooth 603 on the baffle 602 can also crush the concrete. At the same time, the baffle 602 can reduce the splashing of crushed stone.

[0019] Working principle: The conical block 3031 on the outer side of the fixed roller 302 adopts a design that is narrow at the front and wide at the back. When rotating, the tip "pierces" into the concrete surface to form an initial gripping point and prevent the material from slipping. On the same conical block 3031, a first fixed rod 3032 and a second fixed rod 3033 are staggered front to back. Both rods are equipped with crushing heads 3034. When the fixed roller 302 rotates, the front crushing head 3034 contacts the concrete first and applies pressure, followed by the rear crushing head 3034 applying pressure a second time, forming a graded interlocking mechanism. This prevents the concrete from detaching from the toothed roller due to elastic rebound after a single application of pressure, reducing the risk of idle running. The crushing teeth 303 on the two fixed rollers 302 are arranged in a circular array and axially staggered to ensure no direct collision between the teeth during rotation. At the same time, a continuous crushing channel is formed, and the material is gradually squeezed to the target particle size between the teeth. The crushing head 3034 is connected to the fixed rod through a threaded rod 4. After wear, it can be quickly disassembled and replaced by rotating the threaded rod 4, reducing maintenance costs and ensuring crushing efficiency. The bottom of the inclined plate 502 has teeth 503 that match the tooth shape of the crushing roller. The material is pushed along the inclined plate 503. 2. During the downward movement, the teeth 503 guide the material to fall precisely into the central area of ​​the two crushing rollers, avoiding accumulation at the edge of the feed inlet or rebound due to impact. The surface of the inclined plate 502 is fixed with a rubber plate 7. When the concrete block slides down and hits the inclined plate 502, the rubber plate 7 absorbs the impact energy through elastic deformation, reducing the bounce height of the material and making it easier for the material to be grabbed by the crushing teeth 303, thus improving the swallowing efficiency. The bottom of the baffle 602 is provided with a crushing groove 604. When a large piece of concrete is not immediately grabbed by the crushing teeth 303 due to its size, the gap between the baffle 602 and the crushing roller forms a temporary clamping area to prevent the material from splashing out of the crushing box 2 due to centrifugal force. At the same time, it provides a second grabbing opportunity for the crushing teeth 303. The surface of the baffle 602 is welded with fixed teeth 603. When the concrete block is clamped, the fixed teeth 603 can pre-crush the surface of the material, weakening its overall strength, making it easier for the crushing teeth 303 to completely crush it later. As a physical barrier, baffle 602 can block the flying debris generated during the crushing process, protect the safety of operators and equipment, reduce dust diffusion, and improve the working environment.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste concrete crushing device, comprising a crusher body (1), wherein a crushing box (2) is installed on the crusher body (1), characterized in that, Also includes: The crushing component (3) for crushing concrete is installed inside the crushing box (2); The material is conveyed to the center of the crushing assembly (3) by the conveying assembly (5), which is installed on the crushing box (2). The crushing box (2) is also equipped with a baffle assembly (6) to prevent material splashing. The conveying assembly (5) and the baffle assembly (6) are symmetrically installed on both sides of the crushing box (2). The crushing assembly (3) includes a connecting shaft (301) installed on the crushing box (2). A fixed roller (302) is fixedly connected to the connecting shaft (301). A crushing tooth (303) is fixedly connected to the outside of the fixed roller (302). The crushing tooth (303) includes several conical blocks (3031) welded in a ring to the outside of the fixed roller (302). A first fixed rod (3032) and a second fixed rod (3033) are fixedly connected to the outside of the conical block (3031). A crushing head (3034) is installed on both the first fixed rod (3032) and the second fixed rod (3033).

2. The waste concrete crushing device according to claim 1, characterized in that: A threaded rod (4) is fixedly connected to the crushing head (3034), and the threaded rod (4) is threadedly connected to the first fixed rod (3032) and the second fixed rod (3033).

3. The waste concrete crushing device according to claim 1, characterized in that: The material conveying assembly (5) includes a fixed frame (501) fixedly connected to the crushing box (2), and an inclined plate (502) is welded on the fixed frame (501). The bottom of the inclined plate (502) is provided with teeth (503).

4. The waste concrete crushing device according to claim 3, characterized in that: A rubber plate (7) to prevent material from bouncing is fixedly connected to the inclined plate (502).

5. The waste concrete crushing device according to claim 1, characterized in that: The baffle assembly (6) includes a support frame (601) welded to the crushing box (2), a baffle (602) welded on the support frame (601), a fixing tooth (603) fixedly connected on the baffle (602), and a crushing groove (604) opened at the bottom.

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