A metal pre-chopper

Abstract

The utility model discloses a metal pre -chopper, including frame, the upper end of frame has the feed inlet, and the lower extreme has the discharge gate, the frame still has the cavity of the feed inlet and the discharge gate intercommunication, chop device, chop device installs in the cavity, and chop device has detachable replacement tool holder, upper cover, upper cover with frame swing joint. The metal pre -chopper of the utility model, through the replacement tool holder of installation on chop device, can change the replacement tool holder of abrasion flexibly, thereby can prolong the service life of metal pre -chopper.

Description

Technical Field

[0001] This utility model relates to the field of shredder technology, specifically to a metal pre-shredder. Background Technology

[0002] The scrap metal pre-crusher is a pre-crushing equipment. Its working principle is to shred the scrap metal entering the pre-crusher through the continuous drive of a low-speed, high-torque hydraulic motor, thereby controlling the particle size and quality of the pre-crushed material.

[0003] Under normal circumstances, metal pre-crushers need to shred metal, resulting in harsh operating conditions. With the increasing demand for reduced transportation costs, the density of metal briquettes is constantly increasing, making it difficult for existing equipment to unpack high-density briquettes. To effectively unpack even denser metal briquettes, wear-resistant steel plates are commonly used to manufacture the gears of pre-crushers. After a period of use, when gears develop cracks or damage, they are repaired by manual welding to extend the service life of the pre-crusher's crushing gears. However, traditional, frequent manual welding is time-consuming and labor-intensive, and because the crushing cutter shaft of the pre-crusher is compactly positioned within the frame, it is often inconvenient to operate and poses certain safety hazards. Utility Model Content

[0004] To overcome the above shortcomings, the purpose of this utility model is to provide a metal pre-shredder, which can flexibly replace worn replacement blades by installing replacement blades on the shredding device, thereby extending the service life of the metal pre-shredder.

[0005] Technical solution: This utility model discloses a metal pre-shredder, comprising:

[0006] The frame has an inlet at the upper end and an outlet at the lower end, and the frame also has a cavity that connects the inlet and the outlet.

[0007] A shredding device is installed inside the cavity and has a removable, replaceable blade.

[0008] The upper cover is movably connected to the frame.

[0009] Furthermore, it also includes a pushing mechanism located below the feed inlet. The pushing mechanism includes a pushing plate and a pushing cylinder. One end of the pushing plate is hinged to the frame, and the other end of the pushing plate is hinged to the piston end of the pushing cylinder. The cylinder end of the pushing cylinder is hinged to the frame.

[0010] Furthermore, the shredding device includes a first cutter shaft and a second cutter shaft arranged vertically within the cavity. The first cutter shaft is provided with a plurality of first cutting gears spaced apart, and the second cutter shaft is provided with a plurality of second cutting gears spaced apart. Both the first and second cutting gears have teeth. The replacement cutter head can be sleeved on the teeth of the first and / or second cutting gears and fixedly connected by bolts.

[0011] Furthermore, the first and second cutter shafts extend out of the frame at both ends, and drive devices are installed at both ends of the first and second cutter shafts.

[0012] Furthermore, the first cutter shaft and the second cutter shaft each have a first bearing seat and a second bearing seat at their ends, and the first bearing seat and the second bearing seat are fixed by the frame and the upper cover snap fastener.

[0013] Furthermore, a plurality of first wear-resistant gear rings are mounted on the first cutter shaft, each of the first wear-resistant gear rings being located between two arbitrarily adjacent first cutting gears; a plurality of second wear-resistant gear rings are mounted on the second cutter shaft, each of the second wear-resistant gear rings being located between two arbitrarily adjacent second cutting gears.

[0014] Furthermore, the bottom end of the upper cover is hinged to the frame, and the bottom end of the upper cover is also hinged to an opening cylinder installed at the bottom of the frame.

[0015] Furthermore, protective covers are installed on both sides of the frame, and the protective covers are located above the drive device.

[0016] Furthermore, the feed inlet also has a feed chute.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) The detachable replacement blade is fixed to the shredding device by bolts, which makes it easy to replace it quickly after it wears out, reducing maintenance costs and extending the overall service life of the equipment;

[0019] (2) The first and second cutter shafts are arranged alternately, which can enhance the cutting force and improve the crushing efficiency, and is suitable for high-strength metal materials;

[0020] (3) The pusher plate and the pusher cylinder work together to effectively push the metal into the shredding area, prevent material jamming, and improve shredding efficiency. Attached Figure Description

[0021] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the shredding device described in this utility model;

[0025] Figure 4 This is a schematic diagram of the replacement blade of this utility model;

[0026] Figure 5 and Figure 6 This is a schematic diagram of the shredding device described in this utility model;

[0027] Figure 7 This is a schematic diagram showing the opening of the upper cover described in this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of this utility model.

[0029] In the diagram: 1. Frame; 11. Feed inlet; 12. Discharge outlet; 13. Cavity; 21. First cutter shaft; 211. First cutting gear; 212. First wear-resistant gear ring; 22. Second cutter shaft; 221. Second cutting gear; 222. Second wear-resistant gear ring; 23. Drive unit; 241. First bearing seat; 242. Second bearing seat; 3. Replacement cutter head; 4. Top cover; 51. Pusher plate; 52. Pusher cylinder; 6. Opening cylinder; 7. Protective cover; 8. Feed chute. Detailed Implementation

[0030] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0031] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0032] like Figure 1-8 As shown, this utility model discloses a metal pre-shredder for pre-processing metal materials, including a frame 1, a shredding device, and a top cover 4. The frame 1 is the main supporting structure of the whole structure, with an inlet 11 at its upper end for feeding the metal material to be processed, and an outlet 12 at its lower end for easy discharge of the processed shredded material. The frame 1 also has a cavity 13 inside, connecting the inlet 11 and the outlet 12, for accommodating the shredding device and serving as a flow channel for unpacking and shredding the metal material. The shredding device has a detachable replacement cutter head 3. The replacement cutter head 3 has a modular design, and its material can be designed according to actual needs. During the use of the shredding device, the replacement cutter head 3 can be flexibly replaced according to its wear degree, which not only improves the service life of the equipment but also facilitates maintenance. The traditional method is usually to repair the worn shredding device by manual welding. Frequent manual welding is time-consuming and labor-intensive, which is not conducive to improving work efficiency. The shredding device is driven to rotate by an electric or hydraulic drive system during operation. This rotational motion shreds, shears, and crushes the metal material, achieving pretreatment. For ease of maintenance and operation, the metal pre-shredder also includes a top cover 4, which is movably connected to the frame 1. This allows the top cover 4 to be quickly opened without disassembling the entire frame 1 structure, enabling maintenance, replacement of the cutter heads 3, or cleaning of accumulated material within the shredding device. In use, the metal material is fed into the inlet 11. After the equipment is started, the shredding device crushes the material within the cavity 13 of the frame 1, and the crushed material is discharged through the outlet 12. The entire process is efficient, safe, and highly continuous.

[0033] In this embodiment, the metal pre-shredder also includes a pushing mechanism, which is located below the feed inlet 11. The pushing mechanism includes a pushing plate 51 and a pushing cylinder 52. One end of the pushing plate 51 is hinged to the frame 1, and the other end is hinged to the piston end of the pushing cylinder 52. The cylinder end of the pushing cylinder 52 is also hinged to the frame 1. Driven by the pushing cylinder 52, the pushing plate 51 can rotate around the hinge point between the pushing plate and the frame 1, thereby applying a stable and controllable pushing force to the metal material fed from the feed inlet 11. This continuously and evenly pushes the metal material to the shredding device located in the cavity 13, preventing a decrease in shredding efficiency due to uneven accumulation or loosening of the metal material. The pushing mechanism ensures that the shredding device always has material to cut, preventing it from idling and thus improving shredding efficiency. Furthermore, the hydraulically driven pusher cylinder 52 can adjust the thrust intensity according to the type of material and the actual load, adapting to metal scrap of different hardness and volume, thus enhancing the versatility and adaptability of the metal pre-shredder. The connection between the pusher plate 51 and the feed inlet 11 also has an arc surface to prevent gaps from forming between the pusher plate 51 and the feed inlet 11 when pushing material, thus avoiding material jamming.

[0034] like Figures 3 to 6 As shown, in this embodiment, the shredding device includes a first cutter shaft 21 and a second cutter shaft 22 arranged vertically, which together form a collaborative shredding system, thereby improving the shredding capacity and processing efficiency of metal materials. Specifically, the first cutter shaft 21 and the second cutter shaft 22 are arranged horizontally in the cavity 13 of the frame 1. Multiple first cutting gears 211 are spaced apart on the first cutter shaft 21, and multiple second cutting gears 221 are spaced apart on the second cutter shaft 22. The cutting gears on the first cutter shaft 21 and the second cutter shaft 22 are staggered, forming an interlocking cutting structure. Both the first cutting gears 211 and the second cutting gears 221 have circumferentially arranged teeth, providing good biting force and wear resistance. Furthermore, the shredding device also has a detachable replacement cutter head 3, which is sleeved on the teeth of the first cutting gear 211 and / or the second cutting gear 221 and fixedly connected by bolts. The modular replacement cutter head 3 can be quickly replaced with a replacement cutter head of the appropriate specification or material according to the type, hardness or wear of different metal materials, thereby ensuring the shredding effect, extending the service life of the metal pre-shredder and reducing maintenance costs.

[0035] like Figure 1 , Figure 3 and Figure 7As shown, in this embodiment, the first cutter shaft 21 and the second cutter shaft 22 extend from both ends of the frame 1, and drive devices 23 are provided at both ends to control the first cutter shaft 21 and the second cutter shaft 22, thereby improving the flexibility and stability of the cutting process. Specifically, depending on the actual situation, the drive device 23 can drive the two cutter shafts synchronously in opposite directions, thereby generating a strong shearing force to effectively cut metal materials of different shapes and sizes, improving the crushing capacity. In actual use, the drive device 23 can be a combination of a hydraulic motor and a planetary reducer, or a combination of a motor and a planetary reducer, or it can be directly driven by a hydraulic motor.

[0036] like Figure 3 and Figure 7 As shown in this embodiment, a first bearing seat and a second bearing seat are respectively provided at both ends of the first cutter shaft 21 and the second cutter shaft 22, which are used to provide stable rotational support for the cutter shaft, prevent axial movement and vibration, and ensure a smooth and powerful cutting process. The first bearing seat and the second bearing seat are fixed by the frame 1 and the upper cover 4 with a snap fastener, which facilitates quick disassembly and assembly during daily maintenance. When it is necessary to inspect or replace the cutter head 3, simply unlock the snap fastener and open the upper cover 4 to easily remove or inspect the bearing seat and the cutter shaft, which greatly shortens downtime and improves maintenance efficiency.

[0037] like Figure 5 and Figure 6 As shown, in this embodiment, a plurality of first wear-resistant gear rings 212 are also installed on the first cutter shaft 21, with each first wear-resistant gear ring 212 spaced apart from a first cutting gear 211; similarly, a plurality of second wear-resistant gear rings 222 are also installed on the second cutter shaft 22, with each second wear-resistant gear ring 222 spaced apart from a second cutting gear 221. The first wear-resistant gear rings 212 and 222 are made of high-hardness alloy material, possessing excellent wear resistance and impact resistance. The first wear-resistant gear rings 212 and 222 are respectively located between the first cutting gear 211 and the second cutting gear 221, covering the exposed sections of the first cutter shaft 21 and the second cutter shaft 22, preventing metal materials from directly contacting the cutter shaft surface during cutting, thereby reducing shaft wear and extending the service life of the cutter shaft.

[0038] like Figure 1 , Figure 2 and Figure 7As shown, in this embodiment, the bottom end of the upper cover 4 is hinged to both the frame 1 and the cover-opening cylinder 6 mounted on the frame 1. The upper cover 4 can rotate around its hinge point with the frame 1. When the cover-opening cylinder 6 retracts, the upper cover 4 rotates, opening to the frame 1; when the cover-opening cylinder 6 extends, the upper cover 4 rotates, closing to the frame 1. By controlling the opening and closing of the upper cover 4 through the cover-opening cylinder 6, operators can quickly maintain or replace the shredding device inside the metal pre-shredder without disassembling the entire machine, thereby shortening downtime and improving work efficiency.

[0039] like Figure 8 As shown, in this embodiment, protective covers 7 are also installed on both sides of the frame 1. The protective covers 7 are located above the drive device 23, thereby effectively shielding and protecting the exposed drive device 23 and preventing material splashed from the feed inlet 11 from damaging the drive device 23. The protective covers 7 can be made of high-strength metal plates, with a stable structure and strong corrosion resistance to meet the high-intensity operation requirements in industrial environments.

[0040] like Figure 8 As shown in this embodiment, the inlet 11 is also provided with an inlet chute 8, which is used to guide the metal material into the inlet 11 and prevent the metal material from spilling out of the inlet 11.

[0041] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A metal pre-shredder, characterized in that, include: The frame has an inlet at the upper end and an outlet at the lower end, and the frame also has a cavity that connects the inlet and the outlet. A shredding device is installed inside the cavity and has a removable, replaceable blade. The upper cover is movably connected to the frame.

2. The metal pre-shredder according to claim 1, characterized in that, It also includes a pushing mechanism located below the feed inlet. The pushing mechanism includes a pushing plate and a pushing cylinder. One end of the pushing plate is hinged to the frame, and the other end of the pushing plate is hinged to the piston end of the pushing cylinder. The cylinder end of the pushing cylinder is hinged to the frame.

3. The metal pre-shredder according to claim 1, characterized in that, The shredding device includes a first cutter shaft and a second cutter shaft arranged vertically within the cavity. The first cutter shaft is provided with a plurality of first cutting gears spaced apart, and the second cutter shaft is provided with a plurality of second cutting gears spaced apart. Both the first and second cutting gears have teeth. The replacement cutter head can be sleeved on the teeth of the first and / or second cutting gears and fixedly connected by bolts.

4. The metal pre-shredder according to claim 3, characterized in that, The first and second cutter shafts extend out of the frame at both ends, and drive devices are installed at both ends of the first and second cutter shafts.

5. The metal pre-shredder according to claim 3, characterized in that, The first cutter shaft and the second cutter shaft each have a first bearing seat and a second bearing seat at their ends, and the first bearing seat and the second bearing seat are fixed by the frame and the upper cover snap fastener.

6. The metal pre-shredder according to claim 3, characterized in that, The first cutter shaft is equipped with a plurality of first wear-resistant gear rings, with one first wear-resistant gear ring spaced apart from one first cutting gear; the second cutter shaft is equipped with a plurality of second wear-resistant gear rings, with one second wear-resistant gear ring spaced apart from one second cutting gear.

7. The metal pre-shredder according to claim 1, characterized in that, The bottom end of the upper cover is hinged to the frame, and the bottom end of the upper cover is also hinged to an opening cylinder installed at the bottom of the frame.

8. The metal pre-shredder according to claim 4, characterized in that, Protective covers are also installed on both sides of the frame, and the protective covers are located above the drive device.

9. The metal pre-shredder according to claim 1, characterized in that, The inlet also has an inlet chute.

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