TWI832043B - Wood chipper crushing device - Google Patents

Abstract

A crushing device of a wood chipper includes a knife base with a central axis extending in a horizontal direction, and at least one cutter set detachably arranged on the knife base. The tool holder defines a plurality of mounting grooves extending along the horizontal direction. The at least one tool set includes a plurality of blades arranged in the mounting grooves. Each blade includes a blade portion and a plurality of saw blade portions arranged on one side of the blade portion and arranged along the horizontal direction. The tool holder adopts an integrated design and has better structural strength, and the blades can be directly detached from the tool holder without dismantling the tool holder, which improves the convenience of disassembly.

Description

Wood chipper crushing device

The present invention relates to a cutting tool, and in particular to a crushing device of a wood chipper.

Referring to Figures 1 and 2, the wood chipper 1 is a recycling tool that cuts and crushes tree branches extending into the machine body through the rotation of the cutter 11. Generally, the cutter 11 of the wood chipper 1 includes a plurality of coaxially assembled cutterheads 111 and a plurality of saw blade wheels 112 that are staggered with the cutterheads 111 and are sandwiched and fixed by the cutterheads 111 . Each cutterhead 111 forms two grooves, and the grooves cooperate with each other to define two opposite cutting areas for partially exposing the saw wheels 112 . During the rotation of the saw wheel 112, tree branches will be cut and crushed by the saw wheel 112 exposed from the cutting areas.

However, when any saw blade wheel 112 is damaged, the cutter head 111 sandwiching the saw blade wheel 112 needs to be disassembled before replacement. If all saw blade wheels 112 need to be replaced, all the saw blade wheels 112 need to be replaced. The disassembly of the disc 111 increases the difficulty of disassembly and reduces the convenience. Finally, these cutter discs 111 have a combined structure, so the structural strength is not good and there is still room for improvement.

Therefore, the object of the present invention is to provide an easily replaceable crushing device.

Therefore, the crushing device of the wood chipper of the present invention includes a knife base with a central axis extending in a horizontal direction, and at least one cutter set detachably disposed on the knife base. The tool holder defines a plurality of mounting slots extending along the horizontal direction and arranged in annular intervals along its central axis. The at least one tool set includes a plurality of blades arranged in the mounting grooves. Each blade includes a blade portion and a plurality of saw blade portions arranged on one side of the blade portion and arranged along the horizontal direction.

The effect of the present invention is that the knife holder adopts an integrated design without additional assembly and has better structural strength, and the blades can be directly disassembled from the knife holder without disassembling the knife holder, thereby improving the efficiency of the knife holder. Convenience of replacement.

Referring to Figures 3 and 4, one embodiment of the crushing device 3 of the wood chipper 2 of the present invention is shown. The crushing device 3 includes a knife base 31 with a central axis extending along a horizontal direction A, and a blade removably disposed on the blade base 31. The tool set 32 on the tool seat 31. The tool base 31 includes a pivot shaft 311 extending along the horizontal direction A, and a base body 312 that is penetrated by the pivot shaft 311 and fixed on the pivot shaft 311. The seat body 312 is recessed to define two mounting grooves 313 each extending along the horizontal direction A and arranged annularly apart from each other along its central axis. The crushing device 3 is installed in a wood chipper 2 as shown in Figure 4, and is pivoted in the wood chipper 2 through the pivot 311. It should be noted that the wood chipper 2 in Figure 4 The appearance and configuration method are for reference only. In fact, the installation is not limited to this kind of wood chipper 2.

Referring to Figures 3, 5, and 6, the tool set 32 includes two blades 321 respectively fixed in the mounting grooves 313 in a screw lock manner. Each blade 321 includes a blade portion 322 extending along the horizontal direction A, a plurality of saw blade portions 323 integrally formed on one side of the blade portion 322 and continuously arranged along the horizontal direction A, and a plurality of saw blade portions 323 integrally formed on the blade portion 322 . The replacement blade portions 324 are continuously arranged on the other side of 322 and along the horizontal direction A. The saw blades 323 are spaced apart from each other along the horizontal direction A to define a plurality of saw grooves 325 . The saw blade portions 323 of each blade 321 are staggered with the saw blade portions 323 of the other blade 321 as shown in FIG. The direction B corresponds to a saw groove 325 of another blade 321 , that is, each saw blade 323 of each blade 321 will be offset from the saw blade 323 of the other blade 321 . The replacement blade portions 324 and the saw blade portions 323 on the same blade 321 are aligned with each other along the circumferential direction B of the tool seat 31, so that each replacement blade portion 324 is aligned with the other saw blade portion 323. That is to say, The replacement blade portions 324 on each blade 321 are also staggered with the replacement blade portions 324 or the saw blade portions 323 on another blade 321 .

Through the staggered arrangement of the saw blades 323 of the blades 321, a continuous cutting and crushing range can be formed when cutting and crushing tree branches, thereby improving the cutting and crushing effect. Each blade 321 can be directly removed from the blade holder 31 when damaged, thereby eliminating the need to disassemble the blade holder 31 to achieve rapid replacement. In addition to the saw blades 323, the blade 321 also has a spare function. The user can reinstall the replacement blade portions 324 in reverse after removing the blade 321, so that the replacement blade portions 324 can be used for work, and the replacement blade portions 324 are also the same as those of the other blade 321. The saw blade portions 323 or the replacement blade portions 324 are arranged in a staggered manner to maintain a good cutting and crushing effect. In addition, the tool holder 31 adopts an integrated design and has better structural strength.

Referring to Figure 7, Figure 8, and Figure 9, the saw blade portions 323 or the replacement blade portions 324 can be designed with sharp teeth or flat teeth, and the saw blade portions 323 and the replacement blade portions are of different shapes. 324 can also be matched with each other. For example, as shown in Figure 7, one of the blades 321 uses a sharp-toothed saw blade portion 323 for operation, and the other blade 321 uses a flat-toothed replacement blade portion 324 for operation. These saw blades 323 and the replacement blade portions 324 can also be arranged in a staggered manner, and even each blade 321 can have only one single-edge replacement blade portion 324 as shown in Figure 9 , so that each blade 321 can have more A variety of blade bodies are available to choose from, and a wider variety of blade body combinations can be produced to improve versatility.

It should be noted that more than two mounting grooves 313 can also be formed on the base 312 and can correspond to two or more tool sets 32, or the tool set 32 can also have more than two blades 321 ( The blades 321 still adopt the staggered arrangement of the saw blade portions 323) to enhance scalability and variability.

To sum up, the present invention can improve the cutting and crushing efficiency through the staggered arrangement of the saw blades 323. The blades 321 are easy to replace, and each blade 321 can be put back in reverse after being detached. Working with the replacement blades 324, combined with the different changes in the saw blades 323 and the replacement blades 324, can produce various crushing effects, and the integrated design of the blade holder 31 can also increase the number of crushing effects. The overall structural strength can indeed achieve the purpose of the present invention.

However, the above are only examples of the present invention, and should not be used to limit the scope of the present invention. All simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the patent specification are still within the scope of the present invention. Within the scope covered by the patent of this invention.

2: Wood chipper 3: Crushing device 31: Knife holder 311:Pivot 312: Seat body 313:Installation slot 32: Tool set 321:Blade 322: Blade part 323: Saw blade 324: Replacement blade part 325: Saw groove A:Horizontal direction B: circumferential direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a side cross-sectional view illustrating a wood chipper equipped with a conventional cutter; Figure 2 is a perspective view illustrating the three-dimensional form of the tool in Figure 1; Figure 3 is a perspective view illustrating one embodiment of the crushing device of the wood chipper of the present invention; Figure 4 is a side cross-sectional view illustrating the manner in which this embodiment is installed on the wood chipper; Figure 5 is a perspective view illustrating one of the blades in this embodiment; Figure 6 is a top view illustrating a tool set in this embodiment; and Figures 7 to 9 are all perspective views illustrating other aspects of the blade.

3: Crushing device

31: Knife holder

311:Pivot

312: Seat body

313:Installation slot

32: Tool set

321:Blade

322: Blade part

323: Saw blade

A:Horizontal direction

B: circumferential direction

Claims (7)

A crushing device of a wood chipper, including: a knife holder with a central axis extending along a horizontal direction, the knife holder defining a plurality of installation grooves extending along the horizontal direction and arranged annularly at intervals along its central axis; and at least one cutter The set is detachably disposed on the knife holder and includes a plurality of blades disposed in the mounting slots. Each blade includes a blade portion, and a plurality of blades disposed on one side of the blade portion and arranged along the horizontal direction. The saw blades are spaced apart from each other along the horizontal direction to define a plurality of saw grooves. One saw blade of each blade corresponds to a saw groove of another blade in the circumferential direction of the blade seat. The crushing device of the wood chipper according to claim 1, wherein the saw blade portions of each blade are staggered with the saw blade portions of another blade. The crushing device of the wood chipper according to claim 1, wherein the saw blades of the blades are in the shape of sharp teeth or flat teeth. The crushing device of the wood chipper according to claim 1, wherein each blade of the at least one cutter set further includes a replacement blade portion provided on the other side of the blade portion and extending along the horizontal direction. The crushing device of the wood chipper according to claim 1, wherein each blade of the at least one cutter set further includes a plurality of replacement blade portions provided on the other side of the blade portion and arranged along the horizontal direction, and the replacement blades The saw blade portion and the saw blade portion are aligned with each other along the circumferential direction of the tool holder, so that each saw blade portion corresponds to another replacement blade portion. The crushing device of the wood chipper according to claim 5, wherein the replacement blades of the blades are in the shape of sharp teeth or flat teeth. The crushing device of the wood chipper as claimed in claim 1, wherein the knife base includes a pivot extending along the horizontal direction, and a knife that is penetrated by the pivot and fixed on the pivot, and defines the The base of the mounting slot.

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