CS236986B1 - Breaking devices, especially crushers of difficult to divide materials - Google Patents

Abstract

The safety device is designed especially for crushers of difficult-to-divide materials with stator knives arranged on a swing block. The swing block consists of separately mounted stator knife carriers, each of which is firmly connected to a safety device attached to the crusher housing.

Description

The invention relates to a belay device, in particular for crushers of difficult-to-cut materials, comprising a rotor mounted in a crusher housing carrying rotor blades, the stator knives arranged on the pivot block being connected to the crusher housing.

In the prior art crushers where the stator knives are rigidly connected to the housing thereof, it is difficult to provide a device which would prevent the knives from deteriorating when an undesired hard object enters them or the other parts of the crusher, such as the rotor housing and the like. With these types of crushers, it is necessarily relatively expensive to screen the pre-crushing equipment, and even these machines do not provide a perfect assurance of perfect screening.

For this reason, the stator blades are arranged on a swinging block which, upon entry of an unwanted object between the rotor and stator blades, pivots and moves the rotor and stator blades apart. Such arrangements are disadvantageous in that the swinging block has a large weight, which is associated with The aim of the present invention is to provide a safety device that allows its operation due to lower impact forces caused by the ingress of unwanted objects between the rotor and stator blades, thereby increasing the life of the entire device and reducing the number of repairs thereof.

The safety device according to the invention is characterized in that the pivoting block consists of separately mounted stator knife carriers, each of which is rigidly connected to a fuse attached to the crusher housing. The fuses are attached to the crusher housing via a continuous bar, the stator knife carriers abutting on the tripping rod · The shut-off rod is connected via a gear lever mounted on the connecting rod and a ratchet to the cam control cam

238 988

OT switches® The control cam is fixed to the common shaft with the tensioning lever and ejector thumb, the tensioning lever being articulated ®po | © Ha with the control spring guide · I and the connecting rod j® fitted with a torsion spring one end mounted in the housing crusher and second® end in tension ring ·

The advantage of the belay device according to the invention is that it can be adjusted with a relatively low tensioning force, which increases the service life of the shredder blades and other parts thereof. Another advantage lies in easier repair or replacement of damaged parts.

An embodiment of the belay device of the invention is also aa accompanying figures, wherein Fig. 1 shows a side view drtiěe _to Figure "2 shows a cross-sectional view of the crusher, Fig. 3 shows the & Ůorysný view crusher, Fig. 4 shows a partial section through a carrier statoiOvých knives and obr® 5 shows side view of stator knife carriers.

The crusher housing 21 is housed in a rotor bearing 1 with rotor blades 5. The crusher housing 21 is mounted on the connecting rod 80 by a lever 52 which engages the ratchet. The ratchet extends into the lower cutout of the control cam into the upper cutout of which the limit switch extends. The control cam 54 is non-rotatably mounted on a common shaft 56, on which the tensioning lever 61 is also rotatably mounted and the ejector thumb. 8 control springs · Tro to limit the movement of the tensioning lever serves the stop §2® by the rotor 1 a sieve plate with auxiliary knives 11 is arranged. The sieve plate is mounted on a square shaft connected to the sieve plate damper 58 while being held at the opposite end by the ejector thumb J3. The second limit switch 6l arranged in the crusher housing 21 prevents the crusher from lowering. bearing pins 26 in bearings attached to the crusher housing 21. These bearings are formed by the lower part 22 and the bearing cover 2g. The two bearing parts are screwed together with the fitting bolts 23. In the bearing pin 28, alignment rings $ 0 are arranged, which after adjustment are aligned

238 888

- 4 rotorweights / g * of stator blades U when cooked to carriers * 1 of stator blades 1J · YWe always have two carriers 31 on which one stator blade 1J is fastened, is firmly connected by a β sheath 3 & fuses 25 which passes through a continuous flight 25 · 25 «Is terminated with atie 2® · The stator blade 1J rests on the support plate 22» h which is attached? Screws 20. To secure the position of the stator blades 1J, use a tongue 30, a contour plate 28 and an adjusting cube 2J guided in a guide 16 attached * to a part 13 of the crusher housing 21. ·

The torsion spring 82 is provided with a torsion spring 82 with one end retained in the crusher housing 21 and the other end in the tension ring 81.

If an unwanted object such as a stone or metal object enters between the rotor 5 and the stator knives 10, the fuse 25 or the plurality of stator knife carrier 25 is pivoted on the pivot pin 26 and pushes the release rod 26 by clockwise movement. lever 52 and releases ratchet 55 ^{8 through the} cut-out of the control cam 51 · the control lever 51 swivels the common shaft 56 by means of the control spring in the guide. 12, the pivoting lever 52 returns to its original position by means of the torsion spring 82, and thus the shut-off rod 26 prevents the stator blade carriers 21 from returning? to its original position · At this point the rotor impeller drive is switched off and are they separated from each other at the point of entry of the unwanted object of the stator blade 1? the screen 1 of the crusher rotor 1 is also separated from the rotor blades 5 *. In this case, the cause of the failure can be relatively easily eliminated, damaged parts of the crusher can be repaired, or the stator 1J or rotor blades can be replaced.

Before restarting the crusher, it is necessary to return the stator blade holders 21 to their original position, replace the 5 236 986 fuses 22 and raise the tension lever 51 until the latch 22 engages ^{in the} lower cut-out of the control cam. limit switch 64 and re-tensioned with the ejector * with the sieve plate 22 and the crusher can be put into operation.

Claims (5)

A belay device, in particular for crushers of difficult-to-cut materials consisting of a rotor mounted in a crusher housing and carrying rotor blades, the stator knives arranged on the pivot block connected to the crusher housing, characterized in that the pivot block consists of separately supported carriers (31) stator knives (17), each of which is rigidly connected to the fuse (35) »attached to the shredder housing (21) · Locking device according to claim 1, characterized in that the fuses (35) are fastened to the crusher housing (21) via a continuous bar (33), wherein the stator knife carrier (31) bears on the trip rod (36). The belay device according to claim 2, characterized in that the tripping rod (36) is connected via a gear lever (52) mounted on the connecting rod (80) and ratchet (53) to the control cam (54) of the limit switch (49). 4. The belay device according to claim 3, characterized in that the control cam (54) is rotatably mounted on a common shaft (56) with a tensioning lever (51) and an ejector thumb (73), the tensioning lever (51) being articulated to the guide. (48) control springs · Paddle locking device according to Claim 3, characterized in that a torsion spring (82) is mounted on the connecting rod (80) with one end mounted in the crusher housing (21) and the other end in the tensioning ring (81).