A double-shaft shredder with high stability

Abstract

This utility model discloses a highly stable dual-shaft shredder, effectively increasing the overall service life of the shredder. It includes a working frame with a first working shaft and a second working shaft rotating in opposite directions inside. A protective plate is fixedly connected to each of the front and rear sides of the working frame, forming a protective zone between each protective plate and the outer wall of the working frame. Two bearings are rotatably connected inside each protective zone. The ends of the first and second working shafts are engaged with corresponding bearings. A liftable protective frame is provided on the outer side of each protective plate. This utility model features a novel structure, ingenious design, and simple and convenient operation, effectively achieving better shredding results, providing better protection for the bearings, and reducing the probability of foreign objects ejecting during the shredding process.

Description

Technical Field

[0001] This utility model belongs to the field of shredder technology and relates to a highly stable dual-shaft shredder. Background Technology

[0002] A twin-shaft shredder is a shearing shredder that breaks down materials into smaller sizes through shearing, extrusion, and tearing. The shredder blades are the most important component of a shredder (accounting for approximately 10% to 20% of the cost), and their service life directly affects the shredder's performance. Depending on the type of shredder and the type of material being shredded, the shredder blades have different shapes and structures. A twin-shaft shredder includes a frame and a crushing chamber fixed to the frame. The crushing chamber consists of a feed bin and a blade box. The blade box contains opposing fixed blade groups, with moving blade groups positioned between the fixed blade groups.

[0003] During the production process, a major factor affecting shredders is the damage to the bearings of the rotating shaft of the moving blade assembly. Because the bearings are subjected to extremely high forces when the shredder is in use, and the existing shredders do not provide sufficient protection for the bearings, a highly stable twin-shaft shredder that can protect the bearings is needed to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a highly stable dual-shaft shredder, which effectively solves the issues in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A highly stable dual-shaft shredder includes a working frame. Inside the working frame are a first working shaft and a second working shaft that rotate in opposite directions. Protective plates are fixedly connected to the front and rear sides of the working frame. Each protective plate forms a protection zone with the outer wall of the working frame. Inside each protection zone are two bearings that are rotatably connected. The two ends of the first and second working shafts are engaged with the corresponding bearings. A liftable protective frame is provided on the outside of the protective plates.

[0007] Preferably, each of the protective plates is fixedly connected to a motor on the side away from the working frame, and the left side of the first working shaft and the right side of the second working shaft are fixedly connected to the output shaft of the corresponding motor.

[0008] Preferably, each of the bearings is provided with a protective sleeve on its outer side, and each protective sleeve is provided with a detachable flange plate on the side away from the working frame. The protective sleeve and the flange plate cooperate with each other to form a bearing protection structure.

[0009] Preferably, the protective frame includes two connecting frames and a lifting frame. The two connecting frames are fixedly connected to the left and right sides of the bottom of the lifting frame. Each protective plate is fixedly connected to a support frame on the side away from the working frame. Each connecting frame is slidably connected to the corresponding support frame.

[0010] Preferably, the lifting frame has clearance grooves on both the left and right sides.

[0011] Preferably, handles are fixedly connected to both the left and right sides of the lifting frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model has a protective plate. By setting the protective plate, the rotating bearings of the first working shaft and the second working shaft can be protected, reducing the probability of foreign objects damaging the bearings during the shredding process, thereby increasing the service life of the device.

[0014] 2. This utility model has a liftable protective frame, which can reduce the probability of injury caused by foreign objects flying during the tearing process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the clearance groove structure in this utility model.

[0017] Figure 3 This is a partial exploded structural diagram of the present invention.

[0018] In the diagram: 1. Working frame; 2. First working shaft; 3. Second working shaft; 4. Protective plate; 5. Bearing; 6. Protective frame; 7. Motor; 8. Protective sleeve; 9. Flange plate; 10. Connecting frame; 11. Lifting frame; 12. Support frame; 13. Clearance groove; 14. Handle. Detailed Implementation

[0019] 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.

[0020] The following is in conjunction with the appendix Figures 1 to 3 The specific embodiments of this utility model will be described in further detail.

[0021] Depend on Figures 1 to 3 As shown, this utility model includes a working frame 1. In order to increase the overall service life of the shredder, the working frame 1 is provided with a first working shaft 2 and a second working shaft 3 that rotate in opposite directions. A protective plate 4 is fixedly connected to each of the front and rear sides of the working frame 1. Each protective plate 4 and the outer side wall of the working frame 1 form a protection zone. Two bearings 5 ​​are rotatably connected inside each protection zone. The two ends of the first working shaft 2 and the second working shaft 3 are engaged with the corresponding bearings 5. A liftable protective frame 6 is provided on the outside of the protective plate 4.

[0022] It should be noted that the outer sides of the first working shaft 2 and the second working shaft 3 are fitted with blades for shredding operations. For example, Chinese Patent No. 201920269096.X discloses a dual-shaft shredder. The blades installed on the outer sides of the first working shaft 2 and the second working shaft 3 in this design can be shown by their moving blade assembly.

[0023] When in use, the first working shaft 2 and the second working shaft 3 rotate relative to each other, and can perform shredding operations through the blades set on their outer sides. By setting the protective plate 4, the rotating bearings 5 ​​of the first working shaft 2 and the second working shaft 3 can be protected, reducing the probability of foreign objects damaging the bearings 5 ​​during the shredding process, thereby increasing the service life of the device.

[0024] Furthermore, by Figures 1 to 3 As shown, in order to achieve a better shredding effect, a motor 7 is fixedly connected to the side of each protective plate 4 away from the working frame 1, and the left side of the first working shaft 2 and the right side of the second working shaft 3 are fixedly connected to the output shaft of the corresponding motor 7.

[0025] In use, motor 7 is a servo motor 7, which is existing technology and will not be described in detail here.

[0026] Furthermore, by Figures 1 to 3 As shown, in order to provide better protection for the bearing 5, a protective sleeve 8 is provided on the outer side of each bearing 5, and a detachable flange plate 9 is provided on the side of each protective sleeve 8 away from the working frame 1. The protective sleeve 8 and the flange plate 9 cooperate with each other to form a protective structure for the bearing 5.

[0027] When in use, the protective sleeve 8 can further increase the protection of the bearing 5. When the bearing 5 needs to be inspected, the bearing 5 can be exposed by removing the flange plate 9, and the bearing 5 can be inspected and maintained.

[0028] Furthermore, by Figures 1 to 3As shown, to reduce the probability of foreign objects popping out during the shredding process, the protective frame 6 includes two connecting frames 10 and a lifting frame 11. The two connecting frames 10 are fixedly connected to the left and right sides of the bottom of the lifting frame 11. Each protective plate 4 has a support frame 12 fixedly connected to the side away from the working frame 1. Each connecting frame 10 is slidably connected to the corresponding support frame 12. The connecting frame 10 is made of plastic and has a certain elasticity. There is a certain friction between it and the support frame 12. The connecting frame 10 will not slide downward relative to the support frame 12 without human intervention. A clearance groove 13 is opened on each of the left and right sides of the lifting frame 11. A handle 14 is fixedly connected to each of the left and right sides of the lifting frame 11.

[0029] In use, the lifting frame 11 can be raised by the handle 14. During the lifting process, the sliding connection between the connecting frame 10 and the support frame 12 can make the lifting process of the lifting frame 11 more stable. By setting the clearance groove 13, the output shafts of the two motors 7 can be avoided.

[0030] When using this utility model, the items to be shredded can be placed directly between the first working shaft 2 and the second working shaft 3. After starting the motor 7, the first working shaft 2 and the second working shaft 3 will rotate, and the items will be shredded by the blades on the outside of the two shafts. During the shredding process, the protective plate 4 can protect the rotating bearings 5 ​​of the first working shaft 2 and the second working shaft 3. By setting the protective frame 6, the probability of injury to personnel caused by the flying of foreign objects during the shredding process can be reduced.

[0031] This utility model has a novel structure, ingenious design, and simple and convenient operation. Through this design, the overall service life of the shredder is effectively increased, a better shredding effect is achieved, the bearing 5 is well protected, and the probability of foreign objects popping out during the shredding process is reduced.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A biaxial shredder with high stability, comprising a working frame, characterized in that: The working frame has a first working shaft and a second working shaft with opposite directions inside. Protective plates are fixedly connected to the front and rear sides of the working frame. Each protective plate and the outer wall of the working frame form a protection zone. Each protection zone is rotatably connected to two bearings. The two ends of the first working shaft and the second working shaft are engaged with the corresponding bearings. The outer side of the protective plate is provided with a liftable protective frame.

2. The biaxial shredder according to claim 1, wherein: Each of the protective plates has a motor fixedly connected to the side away from the working frame, and the left side of the first working shaft and the right side of the second working shaft are fixedly connected to the output shaft of the corresponding motor.

3. The biaxial shredder of claim 1, wherein: Each of the bearings is provided with a protective sleeve on its outer side, and each protective sleeve is provided with a detachable flange plate on the side away from the working frame. The protective sleeve and the flange plate cooperate with each other to form a bearing protection structure.

4. The biaxial shredder of claim 1, wherein: The protective frame includes two connecting frames and a lifting frame. The two connecting frames are fixedly connected to the left and right sides of the bottom of the lifting frame. Each protective plate has a support frame fixedly connected to the side away from the working frame. Each connecting frame is slidably connected to the corresponding support frame.

5. The biaxial shredder according to claim 4, wherein: The lifting frame has clearance slots on both the left and right sides.

6. The biaxial shredder of claim 4, wherein: The lifting frame is fixedly connected to handles on both the left and right sides.

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