JPS6412640U

JPS6412640U -

Info

Publication number: JPS6412640U
Application number: JP10688987U
Authority: JP
Priority date: 1987-07-10
Filing date: 1987-07-10
Publication date: 1989-01-23
Also published as: JPH0420505Y2

Description

[Brief explanation of the drawing]

第１図ａ及びｂは本考案の一実施例に係る打撃
子の側断面図及び正面図（右半分のみを示す）、
第２図は他の実施例に係る打撃子についての第１
図相当図、第３図は第１図に示した打撃子の要部
を示すもので同図ａはその正面図、同図ｂはその
側面図、第４図は本考案の実施例の効果を示すグ
ラフ、第５図は超硬材料片と接合台内部における
残留歪分布を示すグラフ、第６図はｔ_ｍ／ｔ_ｃの
値を変化させた場合に超硬材料片表面にかかる熱
応力σ_ｃの変化を示すグラフ、第７図は従来の衝
撃式破砕機の側断面図、第８図は従来の打撃子の
摩耗の進行状態を示す説明図である。符号の説明、１０……打撃子、１１……打撃子
本体、１４，Ｍ……接合部、１５，Ｃ……超硬チ
ツプ（超硬材料片）、ｔ_ｃ……超硬チツプの厚さ
、ｔ_ｍ……接合台の厚さ。 FIGS. 1a and 1b are a side sectional view and a front view (only the right half shown) of a striker according to an embodiment of the present invention;
FIG. 2 shows a first example of a striking device according to another embodiment.
Figure 3 shows the main parts of the striker shown in Figure 1, Figure a is its front view, Figure b is its side view, and Figure 4 is the effect of the embodiment of the present invention. Figure 5 is a graph showing the residual strain distribution inside the cemented carbide material piece and the joint table, Figure 6 is the graph showing the thermal stress applied to the surface of the carbide material piece when the value of t _m /t _c is changed. A graph showing changes in σ _c , FIG. 7 is a side sectional view of a conventional impact crusher, and FIG. 8 is an explanatory diagram showing the progress of wear of a conventional impactor. Explanation of symbols, 10...Batterer, 11...Batterer body, 14, M...Joint portion, 15, C...Carbide tip (carbide material piece), _tc ...Thickness of carbide tip , t _m ...thickness of the bonding table.

Claims

[Claims for Utility Model Registration] 1. A rotating rotor that rotates around a main shaft provided inside a casing, a plurality of strikers fixed to the outer periphery of the rotating rotor, and a A striker for an impact crusher, which is equipped with a repulsion plate provided at a distance, and crushes the raw material splashed by the tip of the rotating striker by colliding with the tip of the striker and the repulsion plate, A piece of carbide material is brazed to each joint base which is detachably attached to the tip of the striker and is divided into a plurality of parts in the direction of the main axis of the rotating rotor, and the thickness of the piece of carbide material and the joint base in the circumferential direction of the rotating rotor. The ratio (t _c /t _m ), the tensile strength σ _c of a piece of cemented carbide is the sum of the tensile stress σ _s generated on the impact surface of the cemented carbide material due to the collision of raw materials and the thermal stress generated on the impact surface due to brazing. A blower for an impact type crusher, characterized in that it is designed to be larger. 2. The striker for an impact crusher as set forth in claim 1 of the utility model registration claim, wherein the value of t _c /t _m is less than 1/2. 3. The striker for an impact crusher as set forth in claim 1 or 2 of the utility model registration claim, in which a sandwich solder thicker than 0.5 mm is used to join the cemented carbide material pieces to the joining table.