JPH11226442A - Hydraulic biaxial crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an efficient breaking result in a hydraulic motor-driven biaxial shear crusher by attaining an ideal distribution state of edges of cutting blades at a low cost. SOLUTION: The hydraulic biaxial crusher has its two axes arranged in parallel so that they can be reversely rotated to each other. In plural cutting blades 1 arranged on each of the two axes, the positions of the edges to a fitting axis 2 are displaced one by one by a specified peripheral angle α to the reference line O-O to disperse the alignment of the edges of the cutting blades 1. By arranging such cutting blades 1 in order, the distribution state of the edges in the obtained alignment becomes extremely excellent as compared with the case of only the conventional fitting axis with a polygonal section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic twin-screw crusher used for treating large-sized urban garbage and wastes discharged from industry, and more particularly to an arrangement of crushing cutting blades.

[0002]

2. Description of the Related Art A hydraulic twin-shaft crusher is capable of freely adjusting the number of revolutions so as to be suitable for crushing. It is a powerful crusher that uses the characteristics of a hydraulic motor that increases and uses a low-speed differential cutter to operate pollution-free and has applicability to a wide range of crushed materials. There are advantages such as crushing with less labor and no heat generation. The cutting blades in this crusher are arranged without spacers on each of two rotating shafts arranged in parallel so as to rotate in opposite directions together with a spacer. The crushed material is dropped by the gravity from the lower part of the crusher and is discharged out of the machine by the shear force generated by the difference between the crushers and the shear force between the adjacent blades. The structure is

As shown in FIG. 3, the cutting blade used in this crusher is usually such that a plurality of cutting edges 1 deflected in the rotational direction are arranged evenly, and the crushed material to be put into the crusher is made as uniform as possible. In order to be crushed, the cross-sectional shape is arranged in each of the shaft holes 2 having a square or hexagonal shape by displacing the mounting positions on the shafts so that the cutting edges of the respective cutting blades do not engage with each other to disperse the cutting edges. I'm trying.

However, in the method of shifting the mounting position of the rectangular cross section to the mounting shaft, the degree of dispersion of the cutting edges of the plurality of mounted cutting blades is at most 15 degrees in the case of a hexagon, and this degree is not sufficient. However, the degree of dispersion of the arrayed cutting edges is insufficient, the number of cutting edges that engage with the rotation of both shafts becomes several places at the same time, and when the meshing area of these cutting edges increases, the crushing force becomes large and high torque is required. Therefore, there is a disadvantage that the hydraulic pressure fluctuation is large and energy loss is increased. For this reason, there is a problem in that the mounting state becomes unstable when the number of cross sections of the rotary mounting shaft is increased.

In order to solve this problem, each rotating shaft is a so-called spline shaft having a large number of axial grooves on its outer surface, and the positions of the cutting blades attached to the grooves are shifted to improve the dispersion of the cutting blades. There are also things. The use of this spline shaft has a considerable improvement effect on the dispersion of the cutting edge, the stability of the mounting state of the cutting blade, and the improvement of the dispersion state of the cutting edge, but has the disadvantage that the preparation of the spline shaft requires considerable cost. is there.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to realize, at a low cost, an ideal distributed arrangement of the cutting edges of cutting blades in a hydraulically driven biaxial shear crusher.

[0007]

SUMMARY OF THE INVENTION According to the present invention, a cutting blade is provided on each of two mounting shafts which are arranged in parallel so as to rotate in opposite directions to each other, and each of which has a polygonal cross section. Are arranged and mounted on the mounting shaft so that the engagement position of the cutting edge of the cutting blade accompanying the rotation of each mounting shaft is always one place. The cutting edge position of each cutting blade is adjusted. Thus, even though the cutting blade is attached to a rotating shaft having a simple shape, the dispersion of the cutting edge is uniform, and the load applied to the entire cutting blade is small and constant.

Adjustment of the cutting edge of each of the plurality of cutting blades attached to each of the mounting shafts can be performed by sequentially displacing the cutting blades at a specific circumferential angle with respect to the mounting shaft. The displacement of the position of the cutting edge with respect to the mounting axis of the cutting blade of the cutting blade is based on the cutting blade whose line connecting the tip of the specific cutting edge of the cutting blade and the cross-sectional center of the shaft coincides with a reference line passing through the cross-sectional center of the shaft , Are sequentially displaced at a constant peripheral angle.

By arranging such cutting blades sequentially, the dispersing state of the cutting edge is extremely excellent as compared with the conventional case where only a mounting shaft having a polygonal cross section is used.
In addition, the engagement position of the cutting blade with the rotation of the two shafts can be adjusted so that there is always only one position.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the embodiments shown in the accompanying drawings.

FIG. 1 shows an adjustment mode of a cutting blade 10 according to the present embodiment. This cutting blade is applied to a conventional cutting blade 1 having four cutting edges and a shaft hole 2 corresponding to a shaft having a hexagonal cross section, and an adjustment angle for dispersion of each cutting edge 1 of the cutting blade is 10 degrees. Here is an example of the setting. The present invention can be applied to an example in which a hexagonal rotation axis is used as an axis having a polygonal cross section other than a hexagon, and the dispersion angle of each cutting edge can be arbitrarily set.

FIG. 1 shows a procedure for setting an angle for adjusting the arrangement of the cutting edges of the cutting blade 10 of the present invention. In the figure, a hexagonal shaft hole 2 having a section of a, b, c, d, e, f
Is a reference line O-
O, a line connecting the tip of a specific one of the four cutting edges A, B, C, and D to the center of the shaft hole 2 is a cutting edge setting line 3
0 to 32 ...

First, it is assumed that the cutting edge setting line 30 of the cutting blade serving as a reference for the cutting edge alignment coincides with the reference line OO of the hexagonal shaft hole 2. For the cutting blade forming the second cutting edge of the cutting edge alignment, a cutting edge setting in which the circumferential angle of movement in the rotational direction or the opposite direction to the reference line OO, that is, the circumferential displacement angle α is 10 °. It is designed so that the tip of the specific cutting edge A of the cutting blade is located on the line 31. In addition, regarding the cutting blade forming the third cutting edge of the cutting edge alignment, the specific cutting edge A on the cutting edge setting line 32 in which the moving circumferential angle α in the same direction is further shifted by 10 ° with respect to the second cutting blade. Design so that the tip is located.

FIG. 2 shows the positional relationship of dispersion in the alignment of a specific cutting edge A when the inside of the biaxial crusher of the nine types of cutting blades 10 to 18 designed in the manner shown in FIG. The positional relationship is shown by the relationship between the cutting edge setting lines 30 to 38 and the reference line OO. In the figure, the cutting blade 10 serves as a reference in alignment, and the cutting edge setting line 30 is sequentially
11 to 18 are arranged. In the case of the cutting blade 11, the cutting edge setting line 30 is on the reference line OO. Next, in the case of the second cutting blade 11, the cutting edge setting line 31 is the reference line OO.
Is set to 10 °. In the case of the third cutting blade 12, the cutting edge setting line 32 is the reference line OO.
Is set to 20 °. 30 ° for the fourth cutting blade 13 and 40 ° for the fifth cutting blade 14
In the case of the final ninth cutting blade 18, the cutting edge setting line 38 has a displacement angle α with respect to the reference line OO.
Is set to 80 °.

As described above, the arrangement of the cutting blades in which the positions of the cutting edges are adjusted is applied to each of the two shafts, and when the two shafts are rotated in opposite directions, the cutting blades of the cutting blades attached to the opposing portions are rotated. There is always one meshing point.

Table 1 shows the displacement angle α, the type of adjustment angle, the number of cutting blades, and the total number of cutting edges in an array of four cutting blades having the number of blades whose blade positions have been adjusted as described above. Are shown.

[0017]

[Table 1] The table shows an example of application that can be applied practically and always engages in one place, thereby achieving the maximum crushing effect with the minimum hydraulic pressure.

[0018]

According to the present invention, the following effects can be obtained.

(1) Alignment of the cutting edge with excellent dispersibility can be obtained without adjusting the mounting angle of the cutting blade on the two axes.

(2) A crusher with a maximum crushing effect can be obtained with a minimum oil pressure.

[Brief description of the drawings]

FIG. 1 shows how to set the cutting edge alignment of a cutting blade according to the present invention.

FIG. 2 shows a positional relationship of dispersion in alignment of the cutting blade designed in the manner shown in FIG.

FIG. 3 shows a state in which a conventional cutting blade is attached to a shaft of a cutting edge.

[Explanation of symbols]

 1,10-18 Cutting blade 2 holes for mounting on 2 axes 3,30-38 Cutting edge setting line OO Reference line for setting cutting edge displacement angle α Circumferential displacement angle of cutting edge with respect to reference line

Claims (3)

[Claims] 1. A hydraulic hydraulic system comprising a plurality of cutting blades arranged and mounted on two mounting shafts which are arranged in parallel so as to rotate in opposite directions to each other, and each of which has a polygonal cross section. In a shaft crusher, the hydraulic pressure is adjusted by adjusting the positions of the cutting edges of a plurality of cutting blades arranged and mounted on the mounting shaft so that the engagement position of the cutting edge of the cutting blade with the rotation of each mounting shaft is always one position. Two-axis crusher. 2. The hydraulic twin-shaft crusher according to claim 1, wherein the cutting edges of the plurality of cutting blades mounted on each of the mounting shafts are sequentially displaced at a specific circumferential angle with respect to the mounting shaft. 3. The displacement of the position of the cutting edge with respect to the mounting axis of the plurality of cutting blades coincides with a line connecting the tip of a specific cutting edge of the cutting blade and the cross-sectional center of the shaft to a reference line passing through the cross-sectional center of the shaft. 3. The hydraulic double-shaft crusher according to claim 1, wherein the hydraulic cutter is sequentially displaced at a constant circumferential angle with respect to a cutting blade to be cut.