Convenient-to-maintain movable cutter head structure of crushing machine

Abstract

The utility model relates to a crusher movable cutter head structure convenient to maintain in the field of crushers, which comprises a rotating seat and crushing cutters, a fixing frame is arranged on the surface of the rotating seat, the inner wall of the fixing frame is in sliding connection with the surface of the rotating seat, a plurality of cutter positioning parts are arranged on the fixing frame, and the cutter positioning parts are uniformly distributed around the axis of the fixing frame. The plurality of crushing cutters are uniformly mounted in the plurality of cutter positioning parts, positioning through holes are formed in the cutter positioning parts, positioning screw holes are formed in the surfaces of the crushing cutters, the positioning screw holes are aligned with the positioning through holes, and positioning bolts penetrate through the positioning screw holes to be in threaded connection with the positioning through holes, so that the crushing cutters are fixed in the cutter positioning parts; a positioning sliding groove is formed in the cutter positioning part, a positioning sliding block is arranged at the end, close to the cutter positioning part, of the smashing cutter, and when a certain cutter is damaged, only a positioning bolt of the cutter needs to be detached, the damaged cutter is independently replaced, the cutter disc or the fixing frame does not need to be wholly replaced, the maintenance cost is remarkably reduced, and resource waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pulverizers, and in particular to a pulverizer motor cutter disc structure that is easy to maintain. Background Technology

[0002] A crusher is a type of machinery widely used in agriculture, chemical industry, food processing, and other fields. It is primarily used to crush solid materials into the desired particle size or shape. Its core function is to cut, impact, and grind materials through a high-speed rotating cutter disc and blades, thereby achieving material crushing. The performance of a crusher directly affects production efficiency and product quality; therefore, its structural design and ease of maintenance are of great concern.

[0003] The core component of a crusher is the crushing blade assembly, which typically includes a rotating base and crushing blades mounted on the base. The rotating base is connected to the main shaft via a shaft hole and is driven to rotate at high speed by a drive unit, thereby driving the crushing blades to crush the material. Traditional crushing blade assemblies usually adopt an integrated design, meaning the crushing blades are directly fixed to the rotating base, or connected to the base by welding, riveting, or other methods. While this structure is simple, it suffers from problems such as inconvenient maintenance and high replacement costs in practical use.

[0004] The existing mechanical cutter head structure for pulverizers has the following drawbacks: First, the pulverizing blades are usually fixedly installed. When a blade is damaged, the entire cutter head or rotating spindle needs to be disassembled, making maintenance cumbersome and time-consuming, leading to prolonged equipment downtime and affecting production efficiency. Second, the traditional cutter heads use welding or riveting to fix the blades, which can easily loosen after long-term use, causing the blades to fall off or be damaged, posing a safety hazard. Utility Model Content

[0005] In order to overcome the shortcomings of existing technical solutions, this utility model provides a pulverizing motorized cutter head structure that is easy to maintain, which can effectively solve the technical problem of inconvenient maintenance.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] The easy-to-maintain pulverizer motorized cutter head structure includes a rotating base and pulverizing blades. The pulverizing blades are installed on the outer side of the rotating base. The center of the rotating base has a shaft hole for mounting with the rotating spindle. A fixing frame is provided on the surface of the rotating base, and the inner wall of the fixing frame is slidably connected to the surface of the rotating base. The surface of the rotating base has a limit groove, and the inner wall of the fixing frame has a limit rib that matches the limit groove. The fixing frame has several blade positioning parts, which are evenly distributed around the axis of the fixing frame. Several pulverizing blades are provided, and they are evenly installed in several blade positioning parts. Each blade positioning part has a positioning through hole, and the surface of the pulverizing blade has a positioning screw hole. The positioning screw hole is aligned with the positioning through hole, and a positioning bolt passes through the positioning screw hole and is screwed into the positioning through hole to fix the pulverizing blade in the blade positioning part. A positioning groove is provided in the blade positioning part, and a positioning slider is provided at one end of the pulverizing blade near the blade positioning part. When the pulverizing blade is installed in the blade positioning part, the positioning slider is inserted into the positioning groove.

[0008] Furthermore, the two ends of the fixing frame are provided with fixing cover plates, which are connected to the rotating seat by bolts, and the two fixing cover plates press against the two ends of the fixing frame.

[0009] Furthermore, the side wall of the rotating seat is provided with a positioning boss, the positioning boss is provided with an external thread, the middle part of the fixed cover plate is provided with an internal thread, and the fixed cover plate is threadedly connected to the positioning boss.

[0010] Furthermore, a pressure plate is provided inside the positioning groove. The pressure plate is connected to the bottom surface of the positioning groove through an elastic connector, and the pressure plate presses the surface of the positioning slider through the elastic connector.

[0011] Furthermore, the edge of the positioning slider is chamfered, and the inlet of the positioning groove is provided with a guide slope.

[0012] Furthermore, the positioning groove is a T-shaped groove, the positioning slider has a T-shaped cross section that matches the T-shaped groove, and the extension direction of the positioning groove forms an angle of 5-15° with the axis of the crushing tool.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the crushing blades are fixed to the screw holes of the blade positioning part by positioning bolts, and each blade is independently installed in its corresponding positioning part. When a blade is damaged, only the positioning bolt of that blade needs to be removed to replace the damaged blade individually, without the need to replace the entire blade disc or fixing frame, which significantly reduces maintenance costs and resource waste. The blade positioning part is provided with a positioning groove, and a positioning slider is correspondingly provided at the end of the crushing blade. When installing the blade, the positioning slider is inserted into the positioning groove to form a mechanical limit, ensuring that the installation angle and position of the blade are strictly matched with the rotation direction of the blade disc, avoiding uneven blade wear or reduced crushing efficiency due to misalignment, and reducing the time cost of manual adjustment. When the positioning bolts become loose, the crushing blade can still be connected to the positioning groove through the positioning slider to prevent the crushing blade from falling out. The fixed frame is installed on the surface of the rotating seat through the sliding fit of the limiting groove and the limiting rib. When it is necessary to replace or repair the crushing blades, the fixed frame can be directly slid off the rotating seat without removing the rotating spindle or disassembling the entire cutter head structure. This greatly simplifies the maintenance process and shortens downtime, making it especially suitable for high-intensity crushing operations that require frequent blade replacement. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a schematic diagram showing the connection between the crushing blade and the fixing frame in this utility model;

[0017] The following are the labels in the diagram: 1-rotating seat, 2-crushing blade, 3-shaft hole, 4-fixed frame, 5-limiting groove, 6-limiting rib, 7-blade positioning part, 8-positioning through hole, 9-positioning screw hole, 10-positioning bolt, 11-positioning slide groove, 12-positioning slider, 13-fixed cover plate, 14-positioning boss, 15-pressure plate, 16-elastic connector. Detailed Implementation

[0018] 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.

[0019] The following is combined Figures 1-3 The present invention provides a detailed description of the easy-to-maintain motorized shredder disc structure:

[0020] The easy-to-maintain pulverizer motorized cutter head structure includes a rotating base 1 and pulverizing blades 2. The pulverizing blades 2 are mounted on the outer side of the rotating base 1. The rotating base 1 has a shaft hole 3 in the middle for mounting with the rotating spindle. A fixing frame 4 is provided on the surface of the rotating base 1. The inner wall of the fixing frame 4 is slidably connected to the surface of the rotating base 1. The surface of the rotating base 1 has a limiting groove 5. The inner wall of the fixing frame 4 has limiting ribs 6 that match the limiting groove. Four blade positioning parts 7 are provided on the fixing frame 4. The four blade positioning parts 7 are evenly distributed around the axis of the fixing frame 4. Four pulverizing blades 2 are provided, and the four blades 2 are respectively installed in the four blade positioning parts 7. The blade positioning parts 7 are provided with positioning through holes 8. The surface is provided with positioning screw holes 9, which are aligned with positioning through holes 8. Positioning bolts 10 are screwed through the positioning screw holes 9 and the positioning through holes 8 to fix the crushing blade 2 in the blade positioning part 7. The blade positioning part 7 is provided with a positioning groove 11. A positioning slider 12 is provided at one end of the crushing blade 2 near the blade positioning part 7. When the crushing blade 2 is installed in the blade positioning part 7, the positioning slider 12 is paired and inserted into the positioning groove 11. The edge of the positioning slider 12 is provided with a chamfer, and a guide slope is provided at the entrance of the positioning groove 11. The chamfer and guide slope design allows the positioning slider 12 to be inserted into the positioning groove 11 more smoothly, reducing installation resistance and improving the convenience and efficiency of blade replacement.

[0021] The crushing blade 2 is fixed to the screw holes of the blade positioning part 7 by positioning bolts 10, and each blade is independently installed in its corresponding positioning part. When a blade is damaged, only the positioning bolt 10 of that blade needs to be removed to replace the damaged blade individually, without having to replace the entire blade disc or fixing bracket 4, which significantly reduces maintenance costs and resource waste. The blade positioning part 7 is provided with a positioning groove 11, and a positioning slider 12 is provided at the end of the crushing blade 2. When installing the blade, the positioning slider 12 is inserted into the positioning groove 11 to form a mechanical limit, ensuring that the installation angle and position of the blade are strictly matched with the rotation direction of the blade disc, avoiding uneven blade wear or reduced crushing efficiency due to misalignment, and reducing the time cost of manual adjustment. When the positioning bolt 10 becomes loose, the crushing blade 2 can still be connected to the positioning groove 11 through the positioning slider 12 to prevent the crushing blade 2 from falling out. The fixed frame 4 is installed on the surface of the rotating seat 1 through the sliding cooperation of the limiting groove 5 and the limiting rib 6. When it is necessary to replace or repair the crushing blade 2, the fixed frame 4 can be directly slid off the rotating seat 1 without removing the rotating spindle or disassembling the entire blade structure. This greatly simplifies the maintenance process and shortens the downtime, making it especially suitable for high-intensity crushing operations that require frequent blade replacement.

[0022] The fixed frame 4 has fixed cover plates 13 at both ends. The fixed cover plates 13 are connected to the rotating seat 1 by bolts. The two fixed cover plates 13 press against the two ends of the fixed frame 4 to ensure that the fixed frame 4 will not loosen or shift during high-speed rotation, thereby improving the overall stability and operational safety of the cutter head structure. The rotating seat 1 has a positioning boss 14 on its side wall with external threads. The fixed cover plate 13 has an internal thread in the middle. The fixed cover plate 13 is threaded to the positioning boss 14, making the installation and removal of the fixed cover plate 13 more convenient. At the same time, the threaded connection enhances the connection strength between the fixed cover plate 13 and the rotating seat 1, further improving the stability of the cutter head structure.

[0023] A pressure plate 15 is provided inside the positioning groove 11. The pressure plate 15 is connected to the bottom surface of the positioning groove 11 through an elastic connector 16. The pressure plate 15 presses the surface of the positioning slider 12 through the elastic connector 16. Under the action of the elastic connector 16, the pressure plate 15 presses the surface of the positioning slider 12 to prevent the positioning slider 12 from loosening or falling off during installation, thereby further improving the installation stability and operational reliability of the crushing blade 2.

[0024] The positioning groove 11 is a T-shaped groove, and the positioning slider 12 has a T-shaped cross section that matches the T-shaped groove. The extension direction of the positioning groove 11 forms an 8° angle with the axis of the crushing tool 2. The T-shaped groove design increases the contact area between the positioning slider 12 and the groove, improving the stability of the connection. The 8° angle design optimizes the force distribution of the tool during the crushing process, reduces tool wear, and extends the tool's service life.

[0025] 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 pulverizing motorized cutterhead structure for easy maintenance, comprising a rotating base and pulverizing blades, wherein the pulverizing blades are mounted on the outer side of the rotating base, and the rotating base has a shaft hole in the middle for mounting with a rotating spindle, characterized in that: The rotating base has a fixed frame on its surface, and the inner wall of the fixed frame is slidably connected to the surface of the rotating base. The surface of the rotating base has a limit groove, and the inner wall of the fixed frame has a limit rib that matches the limit groove. The fixed frame has a number of tool positioning parts, which are evenly distributed around the axis of the fixed frame. A number of crushing tools are provided, and the crushing tools are evenly installed in the tool positioning parts. The tool positioning parts have positioning through holes, and the surface of the crushing tools has positioning screw holes that are aligned with the positioning through holes. A positioning bolt passes through the positioning screw hole and is screwed into the positioning through hole to fix the crushing tool in the tool positioning part. The tool positioning part has a positioning groove, and a positioning slider is provided at one end of the crushing tool near the tool positioning part. When the crushing tool is installed in the tool positioning part, the positioning slider is inserted into the positioning groove.

2. The easy-to-maintain motorized pulverizer disc structure according to claim 1, characterized in that: The fixed frame is provided with fixed cover plates at both ends. The fixed cover plates are connected to the rotating seat by bolts, and the two fixed cover plates press against the two ends of the fixed frame.

3. The easy-to-maintain motorized crusher disc structure according to claim 2, characterized in that: The side wall of the rotating seat is provided with a positioning boss, the positioning boss is provided with an external thread, the middle part of the fixed cover plate is provided with an internal thread, and the fixed cover plate is threadedly connected to the positioning boss.

4. The easy-to-maintain motorized crusher disc structure according to any one of claims 1-3, characterized in that: A pressure plate is provided inside the positioning slide groove. The pressure plate is connected to the bottom surface of the positioning slide groove through an elastic connector, and the pressure plate presses the surface of the positioning slider tightly through the elastic connector.

5. The easy-to-maintain motorized crusher disc structure according to any one of claims 1-3, characterized in that: The positioning slider has a chamfered edge, and the positioning groove entrance has a guide slope.

6. The easy-to-maintain motorized pulverizer disc structure according to any one of claims 1-3, characterized in that: The positioning groove is a T-shaped groove, and the positioning slider has a T-shaped cross section that matches the T-shaped groove. The extension direction of the positioning groove forms an angle of 5-15° with the axis of the crushing tool.

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