1. Field of the Invention
The present invention relates to a crusher, and more particularly to a crusher with a cutter assembly and cutters thereof.
2. Description of the Prior Art
Usually, in a conventional crusher as disclosed in TWM449032, cutters are arranged on a cutter base, and an interval between each two cutters next to each other is adjusted through screwing. However, when the cutters are adjusted and screwed repeatedly, a screw or a threaded hole is prone to having stripped threads.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The major object of the present invention is to provide a crusher with a cutter assembly and cutters thereof for being detachably disposed on the cutter base, and an arrangement of a single crusher cutter may be changed so that the crusher cutter may be replaced when being damaged. A corner portion and an abutting recess positionably abut against each other to precisely position each other, and a force between the corner portion and the abutting recess can be counterbalanced through the corner portion and the abutting recess abutting against each other. A conical wall of a hourglass-shaped through hole and a conical head of a first screw member tightly abut against each other so that the crusher cutter is stably assembled on the cutter base to prevent the crusher cutter from shaking and increase working efficiency. In addition, the crusher cutter assembly may have a cover body to further fix the crusher cutter so as to prevent shaking and elevate working efficiency, and the crusher cutter assembly may be used in cooperation with a pushing board to increase the efficiency of crushing materials.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment(s) in accordance with the present invention.
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
Please refer to
The two corner portions 10 are disposed on two opposite sides of the crusher cutter 1 along a first direction respectively. The corner portion 10 is for being inserted into the abutting recess 22 and detachably fixed on the cutter base 20. At least two sides of the corner portion 10 abut against the abutting recess 22. When the crusher cutter 1 is assembled on the cutter base 20, the corner portion 10 and the abutting recess 22 can abut against each other to position each other.
In this embodiment, a force between the corner portion 10 and the abutting recess 22 can be counterbalanced through abutting of the corner portion 10 and the abutting recess 22 which are V shaped. The corner portion 10 and the abutting recess 22 may be in other shapes which allow the corner portion 10 and the abutting recess 22 to abut against and position each other. The two corner portions 10 allow the crusher cutter 1 to be interchangeably assembled to the abutting recess 22 along the first direction; therefore, when the crusher cutter 1 is fixed on the cutter base 20, at least a part of the corner portion 10 protrudes beyond the cutter base 20 to conduct cutting or crushing operations.
The two abutting portions 11 are disposed on two opposite sides of the crusher cutter 1 along a second direction, and the second direction is substantially perpendicular to the first direction. Each said abutting portion 11 is provided for positionably abutting against an abutting portion 11 of another crusher cutter 1. When a plurality of the crusher cutters 1 are assembled on the cutter base 20, the crusher cutters 1 positionably abut against each other through the abutting portion 11 to allow the crusher cutter 1 to be stably assembled on the cutter base 20. Preferably, an arrangement of the crusher cutter 1 is interchangeable along the second direction.
The crusher cutter 1 is formed with a hourglass-shaped through hole 30 along a third direction, and the third direction is perpendicular to the first and second directions. The hourglass-shaped through hole 30 is for a first screw member 31 to dispose therethrough to fix the crusher cutter 1 on the cutter base 20, and an inner wall of the hourglass-shaped through hole 30 includes two conical walls 32 at two ends thereof and tapered toward each other. The conical wall 32 is for a conical head 33 of the first screw member 31 whose shape corresponds a shape of the conical wall 32 to tightly abut thereagainst. The bottom portion 23 of the cutter base 20 has a threaded hole 34 whose position corresponds to a position of the hourglass-shaped through hole 30 so that the crusher cutter 1 is fixed on the bottom portion 23 through the first screw member 31 being screwed to the threaded hole 34. An included angle is defined between the conical wall 32 and an axial direction of the hourglass-shaped through hole 30, and the included angle may be preferably 2 to 3 degrees.
Preferably, when the crusher cutter 1 is assembled and positioned through the first screw member 31 and the hourglass-shaped through hole 30 being screwed to each other, the crusher cutter 1 can abut against another said crusher cutter 1 to interchangeably fix the crusher cutter 1 on the bottom portion 23 along the third direction. The crusher cutter 1 may change the arrangement along the first, second or third directions. The crusher cutter may rotate 180 degrees along the third direction to make the crusher cutter back to front, or the crusher cutter may rotate 180 degrees along the first direction to make the crusher cutter upside down. Therefore, when an end of the crusher cutter is abraded, the user may change the arrangement of the crusher cutter to continue an operation with a non-used end of the crusher cutter.
Each said abutting recess 22 defines an abutting space. The cutter base 20 further includes a curved slot 24 which is disposed at an end of the abutting recess 22 and communicated with the abutting space, and the curved slot 24 is for receiving a part of an end of the corner portion 10. The part of the end of the corner portion 10 may deform due to processing error or heat, so the curved slot 24 provides a reserved space for assembling.
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Please refer to
More specifically, a side of the cover body 25 may be further formed with a plurality of protrusions 50 arranged in intervals, and each of the protrusions 50 extends toward the corner portion 10. The protrusions 50 may be for guiding a pushing board 51 to move forward (as shown in
The cover body 25 may have a first positioning portion 60, and the cutter base 20 may have a second positioning portion 70 corresponding to the first positioning portion 60. The first and second positioning portions are positioned and fixed with each other. For example, the first positioning portion 60 may include a plurality of through holes 61 arranged in intervals thereon along a length direction of the cover body 25, and the through holes 61 are alternatively shifted widthwise on the cover body 25. At least a part of the through holes 60 is disposed through at least a part of the protrusions 50. The second positioning portion 70 may include a plurality of threaded holes 71 corresponding to the through holes 61, and each said through hole 61 is disposed through by a second screw member 62. Each said second screw member 62 is fixedly screwed to each said threaded hole 71 to positionably fix the cover body 25 on the cutter base 20. It is to be noted that the through holes 61 and the threaded holes 71 which are alternatively arranged allow the cover body 25 to be stably fixed on the cutter base 20, and the at least a part of the through holes 61 disposed through the protrusion 50 has preferable structural strength to make the second screw member 62 stably disposed through the through hole 61 and to increase an assembling stability of the cover body 25 and the cutter base 20.
Furthermore, the conical head 33 of each said first screw member 31 is embedded into the hourglass-shaped through hole 30 more than 1/2 of a depth of the hourglass-shaped through hole 30 so that the first screw member 31 and the hourglass-shaped through hole 30 are tightly restrained by each other.
Please further refer to
Given the above, the arrangement of the crusher cutter can be changed, so the service life of the same crusher cutter is prolonged due to changing arrangement. In addition, the corner portion and the abutting recess abut against each other to position each other.
While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Number | Date | Country | Kind |
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103133568 | Sep 2014 | TW | national |