JPS634511Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a crushing blade used in a gravel rewashing machine.

Conventionally, the crushing blades used were all made of the same material and integrally molded, but the upper edge of this type of crushing blade easily wears out and the crushing effect decreases in a short period of time, so the crushing blade must be used frequently. This had the disadvantage of reducing the operating rate of the rewashing machine because it had to be replaced.

In view of this problem, the present invention embeds reinforcing pieces made of cemented carbide at intervals in the upper edge in order to improve the wear resistance of the upper edge, and also enables the efficient and economical use of crushing blades. In order to do this, it can be divided into six parts, left and right, front and back.

The embodiment of the present invention will now be described with reference to the drawings as follows.

In the figure, reference numerals 1, 2, and 3 are three sector-shaped main wing pieces, with thick wall portions (A) projecting forward on the upper edge, and reinforcing pieces (4) made of cemented carbide at intervals on this thick wall portion (A). 4 is buried. Reference numerals 5, 6, and 7 denote fan-shaped secondary wing pieces that are overlapped with the front flat part B of each of the main wing pieces 1, 2, and 3, and a thick wall part A is provided on the upper edge of the wing piece to protrude forward. Trapezoidal crushing blades 8, 8...8 are provided protrudingly. 9... 9, 9 are mounting screw holes for mounting screws to be described later that pass through the sub wing pieces 5, 6, 7 so as to overlap concentrically when superimposing the sub wing pieces 5, 6, 7 on the main wing pieces 1, 2, 3.

In addition, 10 is the rotating main shaft of the gravel rewashing machine, 11 is the mounting plate of the crushing blade A in which the main blade pieces and the secondary blade pieces 1, 2, 3, 5, 6, and 7 are combined in a fan shape, and 12 is the crushing blade A
13 is a through hole for the mounting screw 12 drilled in the mounting plate 11, and 14 is a nut screwed into the mounting screw 12.

Since the present invention is constructed as described above, when attaching the crushing blades A...A to the rotating main shaft 10 of a rewashing machine, the main wing pieces 1,
2 and 3 in a fan shape, and the secondary wing pieces 5, 6,
7 on the front flat part B of the main wing pieces 1, 2, 3, and insert each mounting screw 12, 12, 12 into the mounting screw hole 9...
... 9, and then into the through holes 13, 13, 13 of the mounting plate 11 protruding from the rotating main shaft 10, and then tighten the nuts 14,
14, 14, and the crushing blade A is attached to the rotating main shaft 10.
The crushed stones and gravel are fixed to the mounting plate 11 and then the rewashing machine is operated to rewash the crushed stones and gravel.

As mentioned above, this invention has reinforcing pieces made of cemented carbide embedded at intervals in the thick part of the upper edge of the crushing blade, which is the most susceptible to wear, resulting in excellent wear resistance and a low operating rate. In addition, since the crushing blade can be divided into 6 parts, only the parts that are severely worn can be replaced with new ones, and the others can continue to be used as they are, making it possible to utilize the crushing blade effectively and economically. However, since the thick parts were provided on the upper edges of the sector-shaped main wing piece and the secondary wing piece to protrude forward, the upper surface of the thick part of the secondary wing piece was placed on the lower surface of the forward protruding part of the thick part of the main wing piece. By overlapping the secondary wing pieces on the front flat surface of the main wing piece while butting them together, the mounting screw holes provided on each wing piece can be easily aligned concentrically, so it is possible to attach the screw holes protruding from the main rotating shaft of the gravel rewashing machine. Since it can be easily attached to a mounting plate, it exhibits great practical effects as a crushing blade for use in gravel rewashing machines.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the present invention in an exploded state. Second
The figure is an explanatory view showing the state in which the fan-shaped products of the present invention are attached to the mounting plate of the rotating main shaft in a rewashing machine. In the figure, 1, 2, 3 are the main wing pieces, 4 is the reinforcement piece, 5,
6 and 7 are secondary wing pieces, 9 is a mounting screw hole, 12 is a mounting screw, A is a thick part, and B is a front side flat part.

Claims (1)

[Scope of utility model registration request] A thick wall part is provided on the upper edge of the wing, and reinforcing pieces made of cemented carbide are embedded at intervals in the thick part. Three fan-shaped secondary wing pieces with a thick wall section and a crushing blade protruding from the front are superimposed, and attached to the mounting plate using mounting screws that pass through mounting screw holes drilled concentrically in the wing pieces. A crushing blade used in a gravel rewasher that is screwed together.