JPS616595U - Rock crushing equipment that uses pressure fluid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which - Fig. 1 is a sectional view showing the state in which the crushing device is inserted into the object to be crushed;
Figure 2 shows the state GT of the elastic expandable body during expansion and the island: *i*don'-rsa, 3-! Iffli4m, 4. ．． ．． Rigid rod, 6... Pressure fluid introduction passage, 10... Elastic ring member, 12... Fixture.

Claims (1)

[Scope of utility model registration request] An annular cavity 3 having openings 2 on the inner peripheral surface side of both ends and extending toward both ends is centered around a cylindrical elastic expandable body 1 formed between the inner peripheral surface and the outer peripheral surface. The elastic expandable body 1 is fitted onto the outer periphery of a rigid rod-like body 4 having a pressure fluid introduction passage 6 at its portion, so that at least the inner circumferential surfaces of both ends of the elastic expandable body 1 are tightly joined to the rigid rod-like body 4; This elastic expansion body 1 is placed on both end faces of
than. A device for crushing rocks, etc. using pressurized fluid, characterized in that a hard elastic ring member 10 is brought into contact with the end face of the elastic expandable body 1 by a fixture 12 having a diameter smaller than that of the ring member 10. .