A welded shredder knife shaft assembly

Abstract

The utility model discloses a welding formula shredder knife shaft subassembly, include: axle cylinder, one end swing joint of axle cylinder has axle head, the one end of axle head is established with outer step groove, the outer wall movable joint of outer step groove has bearing, the top of axle head is established with mounting hole, the inside fixed connection of mounting hole has the positioning spring, the top fixed connection of positioning spring has the locating block, the outer wall movable joint of axle cylinder has the tool holder, the outer wall fixed connection of tool holder has blade, one end of tool holder is established with the clamping slot, the other end fixed connection of tool holder has the clamping block, one end of axle cylinder is established with the inner step groove, the inner wall of inner step groove is provided with internal thread, the outer wall of one end of axle head is provided with external thread, the installation of axle head is convenient, and the positioning block on axle head and the positioning hole top of axle cylinder are connected with the elasticity of positioning spring through the elasticity of positioning spring correspondingly, the limiting of axle head is convenient, avoids the loosening of axle head, and the stability of axle head installation has been improved.

Description

Technical Field

[0001] This utility model relates to the field of blade shaft technology, specifically a welded shredder blade shaft assembly. Background Technology

[0002] The cutter shaft is the core component of the shredder cutter shaft assembly. It is generally made of high-strength alloy steel or tool steel, which has high strength and wear resistance and can withstand large torque and impact forces. The surface of the cutter shaft is usually machined with keyways or threaded holes for mounting the cutters.

[0003] Existing cutter shafts are usually made of one piece by casting, which is heavy and puts a heavy load on the spindle. Long-term crushing operations will increase the burden on the drive motor, affect the rotation of the cutter shaft, and thus affect the cutting effect of the cutter. In addition, existing cutter shafts usually have internal stepped grooves for mounting the shaft head, but they do not have a limiting device, and the shaft head is prone to loosening during the cutting process. Utility Model Content

[0004] The purpose of this utility model is to provide a welded shredder cutter shaft assembly, which solves the problems of existing cutter shafts being too heavy, main shafts being under heavy load, long-term shredding operations increasing the burden on the drive motor, affecting the rotation of the cutter shaft, and thus affecting the cutting effect of the cutter, as well as the problem that the shaft head of the existing cutter shaft is prone to loosening during the cutting process.

[0005] To achieve the above objectives, a welded shredder cutter shaft assembly is provided, comprising: a shaft cylinder, a shaft head movably connected to one end of the shaft cylinder, an outer stepped groove being formed at one end of the shaft head, a bearing being movably connected to the outer wall of the outer stepped groove, a mounting hole being formed at the top of the shaft head, a positioning spring being fixedly connected inside the mounting hole, and a positioning block being fixedly connected to the top of the positioning spring, which facilitates the installation of the shaft head and improves the stability of the shaft head installation;

[0006] A tool holder is movably connected to the outer wall of the shaft cylinder, and a blade is fixedly connected to the outer wall of the tool holder. A slot is provided at one end of the tool holder, and a locking block is fixedly connected to the other end of the tool holder, which facilitates the installation and disassembly of the tool holder, and thus facilitates the replacement of the tool holder and the blade.

[0007] According to the aforementioned welded shredder cutter shaft assembly, one end of the shaft cylinder is provided with an inner stepped groove, the inner wall of the inner stepped groove is provided with an internal thread, and one end of the shaft head is provided with an external thread. The shaft head is engaged with the inner stepped groove through the thread, which facilitates the installation of the shaft head.

[0008] According to the aforementioned welded shredder cutter shaft assembly, the diameter of the mounting hole is larger than the diameter of the positioning block, and the positioning block is slidably connected to the inner wall of the mounting hole, which facilitates the retraction of the positioning block and thus facilitates the installation and disassembly of the shaft head.

[0009] According to the aforementioned welded shredder cutter shaft assembly, a positioning hole is provided at the top of the shaft cylinder. The shape and size of the positioning block match the shape and size of the positioning hole. When the position of the positioning block corresponds to the position of the positioning hole, the positioning block is movably connected to the positioning hole under the action of the positioning spring, which facilitates the limiting of the shaft head and improves the stability of the shaft head installation.

[0010] According to the aforementioned welded shredder cutter shaft assembly, the outer wall of the shaft cylinder is provided with an installation groove, the shape and size of which match the shape and size of the cutter holder, and the cutter holder is movably connected to the installation groove to facilitate the installation of the cutter holder.

[0011] According to the aforementioned welded shredder cutter shaft assembly, the shape and size of the locking block on the cutter holder match the shape and size of the locking groove, facilitating the connection of the two cutter holders.

[0012] According to the aforementioned welded shredder cutter shaft assembly, the top and bottom of the mounting groove are provided with screw holes, and the locking block and the locking block are also provided with screw holes. The shape, size and position of the three screw holes correspond to each other, which facilitates the fixing of the cutter holder.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The welded shredder cutter shaft assembly has a positioning hole at the top of one end of the shaft cylinder and an inner stepped groove inside the shaft cylinder. The inner wall of the inner stepped groove is provided with internal threads, and the outer wall of the shaft head is provided with external threads. The shaft head is installed in the inner stepped groove by the threads. At the same time, the positioning block on the shaft head is connected to the positioning hole at the top of the shaft cylinder by the elastic force of the positioning spring, which can prevent the shaft head from loosening and improve the stability of the shaft head installation.

[0015] 2. The blades of the welded shredder blade shaft assembly are welded to the blade holders. An installation groove is opened on the outer wall of the shaft cylinder. The two blade holders are placed into the installation grooves respectively, and the locking blocks and slots of the two blade holders are connected accordingly. The blade holders are connected to the shaft cylinder with fixing bolts to complete the installation of the blade holders. This facilitates installation and disassembly, and makes it easy to replace the blade holders and blades.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional structural diagram of a welded shredder cutter shaft assembly according to the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the shaft cylinder of a welded shredder cutter shaft assembly according to the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the shaft head of a welded shredder cutter shaft assembly according to the present invention.

[0021] Figure 4 This is a cross-sectional view of the shaft head of a welded shredder cutter shaft assembly according to the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the cutter holder of a welded shredder cutter shaft assembly according to the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the cutter holder of a welded shredder cutter shaft assembly according to the present invention.

[0024] In the diagram: 1. Shaft sleeve; 2. Shaft head; 3. Outer stepped groove; 4. Inner stepped groove; 5. Mounting hole; 6. Positioning spring; 7. Positioning block; 8. Positioning hole; 9. Mounting groove; 10. Tool holder; 11. Tool; 12. Slot; 13. Slot; 14. Screw hole; 15. Bearing. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-6 This utility model provides a technical solution: a welded shredder blade shaft assembly, comprising: a shaft cylinder 1, a shaft head 2 movably connected to one end of the shaft cylinder 1, an outer stepped groove 3 opened at one end of the shaft head 2, a bearing 15 movably connected to the outer wall of the outer stepped groove 3, an installation hole 5 opened at the top of the shaft head 2, a positioning spring 6 fixedly connected inside the installation hole 5, a positioning block 7 fixedly connected to the top of the positioning spring 6, and the positioning block 7 correspondingly connected to the positioning hole 8 on the shaft cylinder 1 under the action of the positioning spring 6, which facilitates the limiting of the shaft head 2, prevents it from loosening, and improves the stability of the shaft head 2 installation;

[0027] A tool holder 10 is movably connected to the outer wall of the shaft cylinder 1, and a blade 11 is fixedly connected to the outer wall of the tool holder 10. A slot 12 is provided at one end of the tool holder 10, and a block 13 is fixedly connected to the other end of the tool holder 10, dividing the tool holder 10 into two identical tool holders 10. The two tool holders 10 are connected by the block 13 and the slot 12, which facilitates the installation and disassembly of the tool holder 10.

[0028] One end of the shaft cylinder 1 has an inner stepped groove 4 with an internal thread on its inner wall. One end of the shaft head 2 has an external thread on its outer wall. The shaft head 2 engages with the inner stepped groove 4 via the thread, facilitating its installation. The diameter of the mounting hole 5 is larger than that of the positioning block 7. The positioning block 7 is slidably connected to the inner wall of the mounting hole 5. When the positioning block 7 is pressed, it retracts into the mounting hole 5, thus facilitating the disconnection of the positioning block 7 from the positioning hole 8 and the disassembly of the shaft head 2. The top of the shaft cylinder 1 has a positioning hole 8. The shape and size of the positioning block 7 match those of the positioning hole 8. When the position of the positioning block 7 corresponds to the position of the positioning hole 8, the positioning block 7 is movably connected to the positioning hole 8 under the action of the positioning spring 6. Next, the positioning spring 6 can drive the positioning block 7 to connect with the positioning hole 8 on the top of the shaft cylinder 1, thereby facilitating the installation of the shaft head 2. The outer wall of the shaft cylinder 1 is provided with an installation groove 9. The shape and size of the installation groove 9 match the shape and size of the tool holder 10. The tool holder 10 is movably connected to the installation groove 9. Both the tool holder 10 and the installation groove 9 are hexagonal. The shape and size of the locking block 13 on the tool holder 10 match the shape and size of the locking groove 12. The top and bottom of the installation groove 9 are provided with screw holes 14. The locking block 13 and the locking block 13 are also provided with screw holes 14. The shape, size and position of the three screw holes 14 are all corresponding to each other. The tool holder 10 can be installed by inserting the fixing bolt into the three corresponding screw holes 14 and tightening it.

[0029] Working principle: When installing the shaft head 2, connect the threaded end of the shaft head 2 to the end of the shaft cylinder 1 with the inner stepped groove 4. Rotate the shaft head 2 into the inner stepped groove 4. When the positioning block 7 at the top of the shaft head 2 corresponds to the positioning hole 8 at the top of the shaft cylinder 1, the positioning block 7 connects with the positioning hole 8 under the elastic force of the positioning spring 6, thereby fixing the position of the shaft head 2 and preventing it from loosening. When disassembling the shaft head 2, press the positioning block 7 to retract it into the mounting hole 5 and compress the positioning spring 6, thus disconnecting the connection between the positioning block 7 and the positioning hole 8, and rotate it outward. The shaft head 2 can be disassembled by moving the shaft head 2. When installing the tool holder 10, install one of the tool holders 10 into the mounting groove 9 opened on the shaft cylinder 1, and align the screw hole 14 on the tool holder 10 with the screw hole 14 in the mounting groove 9. Connect the locking block 13 and locking groove 12 on the other tool holder 10 to the locking block 13 and locking groove 12 on the tool holder 10 respectively, and align the positions of the screw holes 14 one by one. Insert the fixing bolt into the screw hole 14 and tighten it to complete the installation of the tool holder 10. Similarly, other tool holders 10 can be installed into the mounting groove 9.

[0030] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A welded shredder cutter shaft assembly, comprising: The shaft sleeve (1) is characterized in that a shaft head (2) is movably connected to one end of the shaft sleeve (1), an outer stepped groove (3) is provided at one end of the shaft head (2), a bearing (15) is movably connected to the outer wall of the outer stepped groove (3), an installation hole (5) is provided at the top of the shaft head (2), a positioning spring (6) is fixedly connected inside the installation hole (5), and a positioning block (7) is fixedly connected to the top of the positioning spring (6). The outer wall of the shaft cylinder (1) is movably connected to a tool holder (10), and the outer wall of the tool holder (10) is fixedly connected to a blade (11). One end of the tool holder (10) is provided with a slot (12), and the other end of the tool holder (10) is fixedly connected to a locking block (13). One end of the shaft cylinder (1) is provided with an inner stepped groove (4), the inner wall of the inner stepped groove (4) is provided with an internal thread, and the outer wall of one end of the shaft head (2) is provided with an external thread. The shaft head (2) is engaged with the inner stepped groove (4) through the thread.

2. The welded shredder cutter shaft assembly as described in claim 1, characterized in that: The diameter of the mounting hole (5) is greater than the diameter of the positioning block (7), and the positioning block (7) is slidably connected to the inner wall of the mounting hole (5).

3. The welded shredder cutter shaft assembly as described in claim 1, characterized in that: The top of the shaft cylinder (1) is provided with a positioning hole (8). The shape and size of the positioning block (7) are matched with the shape and size of the positioning hole (8). When the position of the positioning block (7) corresponds to the position of the positioning hole (8), the positioning block (7) is movably connected to the positioning hole (8) under the action of the positioning spring (6).

4. The welded shredder cutter shaft assembly as described in claim 1, characterized in that: The outer wall of the shaft cylinder (1) is provided with an installation groove (9). The shape and size of the installation groove (9) are matched with the shape and size of the tool holder (10). The tool holder (10) is movably connected to the installation groove (9).

5. The welded shredder cutter shaft assembly as described in claim 1, characterized in that: The shape and size of the locking block (13) on the tool holder (10) are matched with the shape and size of the slot (12).

6. The welded shredder cutter shaft assembly as described in claim 4, characterized in that: The top and bottom of the mounting groove (9) are provided with screw holes (14), and the locking block (13) and the locking block (13) are provided with screw holes (14), and the shape, size and position of the three screw holes (14) correspond to each other.

Images