Axial positioning structure of interlaced screw blade of double-shaft shredder

Abstract

This utility model provides an axial positioning structure for staggered spiral blades in a dual-shaft shredder, including a frame and two rotating cutter shafts. Multiple sets of staggered spiral blades are mounted on each of the two rotating cutter shafts. Both ends of the rotating cutter shafts are mounted on the side walls of the frame via bearing seats. Multiple sets of spiral blades are sleeved on the rotating cutter shafts, and a positioning ring is also sleeved on the side of the rotating cutter shaft closest to the bearing seat. The beneficial effects of this utility model are: through the design of polygonal shaft mating, positioning grooves and blocks, and elastic washers, precise axial positioning of the spiral blades is achieved, preventing movement, mitigating impact, absorbing vibration, improving crushing stability and efficiency, extending component life, and ensuring efficient and stable operation of the equipment.

Description

Technical Field

[0001] This utility model mainly relates to the field of dual-shaft shredder technology, specifically to an axial positioning structure for staggered spiral blades in a dual-shaft shredder. Background Technology

[0002] Twin-shaft shredders are widely used in industrial production for material crushing. Their working principle involves two shafts equipped with staggered spiral blades rotating relative to each other, using the shearing, tearing, and compressing actions of the blades to crush the material. In actual operation, the blades need to withstand significant impact and friction forces, thus requiring high stability in blade installation and precise axial positioning. Existing dual-shaft shredders with staggered spiral blades have some problems in axial positioning. Some structures use a simple nut locking method, which can easily loosen under long-term high-load operation, causing the blades to move axially and affecting the crushing effect of the material and the normal operation of the equipment. Other structures use steps on the cutter shaft to position the blades axially, but this method requires high machining accuracy of the cutter shaft and is inconvenient to operate when the blade position needs to be adjusted.

[0003] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0004] 1. The technical problem to be solved by the utility model: This invention provides an axial positioning structure for interlaced spiral blades in a dual-shaft shredder, which solves the technical problems existing in the background art.

[0005] 2. Technical Solution: To achieve the above objectives, the technical solution provided by this utility model is as follows: an axial positioning structure for staggered spiral blades in a dual-shaft shredder, comprising a frame and two rotating blade shafts, each of which is equipped with multiple sets of staggered spiral blades. The two ends of the rotating blade shafts are mounted on the side wall of the frame through bearing seats. The multiple sets of spiral blades are sleeved on the rotating blade shafts, and a positioning ring is also sleeved on the side of the rotating blade shafts near the bearing seats.

[0006] Furthermore, the rotating cutter shaft is a polygonal shaft, and the inner hole shape of the helical blade and the positioning ring is consistent with the outer shape of the rotating cutter shaft.

[0007] Furthermore, both ends of the spiral blade are provided with positioning bushings, and the positioning bushings and the spiral blade are integrally formed.

[0008] Furthermore, the inner side of the positioning bushing is provided with a plurality of circumferentially arranged positioning slots, and the positioning slots are provided with positioning screw holes. An elastic washer is also embedded on the side of the positioning bushing near the positioning ring.

[0009] Furthermore, a limiting bushing is provided at one end of the positioning ring, and a positioning block corresponding to the position of the positioning slot is provided at the other end of the limiting bushing near the positioning bushing. The length of the positioning block is adapted to the depth of the positioning slot, and multiple radial screw holes are also provided on the outer wall of the positioning ring.

[0010] Furthermore, the positioning block has mounting screw holes corresponding to the positioning screw holes, and the mounting screw holes penetrate the positioning ring.

[0011] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: This utility model is reasonably designed. Through the design of polygonal shaft matching, positioning slots and blocks and elastic washers, it can achieve precise axial positioning of spiral blades, avoid movement, reduce impact, absorb vibration, improve crushing stability and efficiency, extend component life, and ensure efficient and stable operation of equipment.

[0012] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the spiral blade structure of this utility model; Figure 4 This is a schematic diagram of the positioning ring structure of this utility model; Figure 5 This is a schematic diagram of another angle positioning ring structure of this utility model.

[0014] Figure label: 1. Frame; 2. Rotary cutter shaft; 3. Spiral blade; 4. Positioning ring; 401. Limiting bushing; 402. Positioning block; 403. Radial screw hole; 404. Mounting screw hole; 5. Positioning bushing; 501. Positioning slot; 502. Positioning screw hole; 503. Elastic washer. Detailed Implementation

[0015] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] See attached document Figure 1-5 An axial positioning structure for staggered spiral blades in a dual-shaft shredder includes a frame 1 and two rotating blade shafts 2. Multiple sets of staggered spiral blades 3 are installed on each of the two rotating blade shafts 2. The two ends of the rotating blade shafts 2 are mounted on the side wall of the frame 1 through bearing seats. Multiple sets of spiral blades 3 are sleeved on the rotating blade shafts 2. A positioning ring 4 is also sleeved on the side of the rotating blade shaft 2 near the bearing seat.

[0020] The rotating cutter shaft 2 is a polygonal shaft. The inner hole shape of the spiral blade 3 and the positioning ring 4 is consistent with the outer shape of the rotating cutter shaft 2, which can effectively restrict the circumferential rotation of the spiral blade 3 and the positioning ring 4 on the rotating cutter shaft 2, so that the spiral blade 3 rotates synchronously with the rotating cutter shaft 2. The rotating cutter shaft 2 is also provided with a reserved mounting hole, which is adapted to the radial screw hole 403 on the positioning ring 4, to ensure the power transmission of the crushing operation and avoid the blade wear aggravated or the crushing efficiency reduced due to relative circumferential rotation.

[0021] Multiple sets of spiral blades 3 are mounted on the rotating cutter shaft 2 and are staggered. Through the cooperation between the blades, the material entering the shredder is crushed by shearing, tearing and squeezing. A positioning ring 4 is mounted on the side of the rotating cutter shaft 2 near the bearing seat. The positioning ring 4 is used to axially limit the spiral blades 3 to prevent the spiral blades 3 from moving axially on the rotating cutter shaft 2, and to ensure the stable installation position of the multiple sets of spiral blades 3 on the rotating cutter shaft 2, thereby ensuring the stability and crushing effect of the crushing operation.

[0022] Both ends of the spiral blade 3 are provided with positioning bushings 5. The positioning bushings 5 ​​and the spiral blade 3 are integrally formed. The integral forming design enhances the structural strength between the spiral blade 3 and the positioning bushings 5, and prevents the two from separating or loosening under the impact force of the crushing operation.

[0023] The inner side of the positioning sleeve 5 has multiple circumferentially arranged positioning slots 501. The positioning slots 501 are used to cooperate with the positioning blocks 402 on the positioning ring 4 to achieve precise positioning between the spiral blade 3 and the positioning ring 4, ensuring that the axial limiting effect of the positioning ring 4 on the spiral blade 3 is reliable. The positioning slots 501 have positioning screw holes 502, which cooperate with the mounting screw holes 404 on the positioning ring 4. By connecting with fasteners such as bolts, the connection between the spiral blade 3 and the positioning ring 4 can be further strengthened, and the stability of axial positioning can be improved.

[0024] An elastic washer 503 is also embedded on the side of the positioning bushing 5 near the positioning ring 4. During the operation of the equipment, the elastic washer 503 can buffer the axial impact force, absorb the vibration caused by material crushing, prevent the connection between the positioning ring 4 and the spiral blade 3 from becoming loose due to continuous impact force and vibration, extend the service life of the components, and ensure the long-term stable operation of the axial positioning structure.

[0025] One end of the positioning ring 4 is provided with a limiting bushing 401. The other end of the limiting bushing 401, which is close to the positioning bushing 5, is provided with a positioning block 402 corresponding to the position of the positioning slot 501. The length of the positioning block 402 is adapted to the depth of the positioning slot 501, ensuring that the positioning block 402 can be accurately and stably inserted into the positioning slot 501, thereby realizing the axial positioning connection between the spiral blade 3 and the positioning ring 4. The outer wall of the positioning ring 4 is also provided with multiple radial screw holes 403. The radial screw holes 403 can be used to install auxiliary positioning or fastening components. Bolts or other components can be passed through the radial screw holes 403 to fine-tune and reinforce the position of the positioning ring 4 on the rotating cutter shaft 2, further improving the reliability of axial positioning.

[0026] Multiple axially arranged positioning slots 501 and positioning blocks 402 correspond to each other, providing a precise rotation angle when the blade angle needs to be adjusted, enabling fast and accurate spiral installation and improving assembly efficiency.

[0027] The positioning block 402 has a mounting screw hole 404 corresponding to the positioning screw hole 502. The mounting screw hole 404 passes through the positioning ring 4. When the positioning block 402 is engaged in the positioning slot 501, it is connected to the positioning screw hole 502 by bolts passing through the mounting screw hole 404. This can firmly connect the positioning ring 4 and the spiral blade 3 into one unit, effectively restricting the axial movement of the spiral blade 3 on the rotating cutter shaft 2. This ensures that the spiral blade 3 can maintain a stable axial position during high-load crushing operations of the twin-shaft shredder, thus ensuring the efficient operation of the crushing operation.

[0028] In summary, the staggered spiral blade axial positioning structure of this dual-shaft shredder, through the precise connection relationship and functional design between the components, achieves reliable axial positioning of the spiral blades, effectively improving the crushing stability and operating efficiency of the dual-shaft shredder, and has good practicality and application value.

[0029] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An axial positioning structure for staggered spiral blades in a dual-shaft shredder, comprising a frame (1) and two rotating blade shafts (2), each of the two rotating blade shafts (2) being equipped with multiple sets of staggered spiral blades (3), the two ends of the rotating blade shafts (2) being mounted on the side wall of the frame (1) via bearing seats, characterized in that: Multiple sets of the spiral blades (3) are sleeved on the rotating cutter shaft (2), and a positioning ring (4) is also sleeved on the side of the rotating cutter shaft (2) near the bearing seat.

2. A twin-shaft shredder intermeshing screw shaft axial positioning structure according to claim 1, characterized in that: The rotating cutter shaft (2) is a polygonal shaft, and the inner hole shape of the spiral blade (3) and the positioning ring (4) is consistent with the outer shape of the rotating cutter shaft (2).

3. A staggered helical blade axial positioning structure for a dual shaft shredder as defined in claim 1 wherein: The spiral blade (3) is provided with positioning bushings (5) at both ends, and the positioning bushings (5) and the spiral blade (3) are integrally formed.

4. A twin-shaft shredder intermeshing screw shaft axial positioning structure according to claim 3, characterized in that: The positioning bushing (5) has multiple circumferentially arranged positioning slots (501) on its inner side, and positioning screw holes (502) are provided in the positioning slots (501). An elastic washer (503) is also embedded on the side of the positioning bushing (5) near the positioning ring (4).

5. A twin-shaft shredder intermeshing screw shaft axial positioning structure according to claim 4, characterized in that: One end of the positioning ring (4) is provided with a limiting bushing (401), and the other end of the limiting bushing (401) near the positioning bushing (5) is provided with a positioning block (402) corresponding to the position of the positioning slot (501). The length of the positioning block (402) is adapted to the depth of the positioning slot (501). Multiple radial screw holes (403) are also provided on the outer wall of the positioning ring (4).

6. The axial positioning structure for the staggered spiral blades of a dual-shaft shredder according to claim 5, characterized in that: The positioning block (402) has a mounting screw hole (404) corresponding to the positioning screw hole (502), and the mounting screw hole (404) passes through the positioning ring (4).

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