WO2024126497A1

WO2024126497A1 - Crusher Apparatus

Info

Publication number: WO2024126497A1
Application number: PCT/EP2023/085372
Authority: WO
Inventors: Damian Patrick SHIELDS
Original assignee: Shields Damian Patrick
Priority date: 2022-12-12
Filing date: 2023-12-12
Publication date: 2024-06-20
Also published as: IE20220202A1

Abstract

A crusher apparatus (1) comprises a mobile chassis (2) mounted on tracks (3). A crusher (5) is mounted on the chassis (2). A conveyor (6) is mounted on the chassis (2) below an outlet (7) of the crusher (5). A feed hopper (8) is mounted on the chassis (2) adjacent an inlet (9) of the crusher (5). A rebar shear (10) is mounted on the chassis (2) between the outlet (7) of the crusher (5) and the conveyor (6). The rebar shear (10) comprises a pair of blades which are movable together and apart between an operative closed cutting position together and an open disengaged position in which the blades are spaced-apart from each other in an inoperative position, thus allowing free passage of material discharged from the crusher (5) through the rebar shear (10) and onto the conveyor (6). The feed hopper (8) is tiltable on the chassis (2) to facilitate feeding elongate material into the crusher (5).

Description

“Crusher Apparatus”

Introduction

This invention relates to a crusher apparatus for reinforced concrete material.

Background to the Invention

The demolition of building structures may require the handling of elongate reinforced concrete posts, piles or columns. Various devices for cutting up such reinforced concrete piles for ease of handling are available. Pile cutters for cutting a reinforced concrete pile to a desired length prior to or after pile driving are disclosed in US 4,124,015 and US 5,413,086 for example. The cutter comprises a frame which locates around a pile and has cutter blades which penetrate into the pile, cutting the reinforcing steel rods embedded within the pile. Another pile cutter device is disclosed in US 4,217,000 for cutting reinforced concrete piles during demolition of a building. This pile cutter has a pair of cutter blades which cut through a reinforced concrete pile with a scissors action. The cutter can be mounted on the end of an articulated digger arm to reach into a building structure to cut the reinforced concrete pile or other reinforced concrete structural element. Other pile cutters are disclosed in WO 2005/086731 A2 and US 5,289,816. JPH 07303848 discloses a crusher which includes a rotary cutter for cutting rebar material delivered through the crusher.

Summary of the Invention

According to the invention, there is provided a crusher apparatus for reinforced concrete material comprising: a chassis, a crusher mounted on the chassis, a conveyor mounted on the chassis at an outlet of the crusher, a feed hopper mounted on the chassis at an inlet of the crusher, and a rebar shear mounted on the chassis between the crusher and the conveyor.

In one embodiment of the invention, the rebar shear has a pair of blades which are movable together and apart between a closed cutting position and an open disengaged position in which the blades are spaced-apart from each other, the blades being operable in the closed cutting position to cut a rebar located between the blades.

In another embodiment, the pair of blades comprise a fixed blade and a movable blade, the movable blade being movable between the closed cutting position adjacent the fixed blade and the disengaged position remote from the fixed blade.

In another embodiment, the movable blade is slidably movable between the closed cutting position and the disengaged position.

In another embodiment, a ram actuator connected to the movable blade is operable for slidable movement of the movable blade between the closed cutting position and the disengaged position.

In another embodiment, the movable blade is pivotally mounted on a slide arm which is slidably movable on the chassis for slidable movement of the movable blade between the closed cutting position and the disengaged position.

In another embodiment, the fixed blade is fixed on a support at one side of the crusher outlet and the movable blade is mounted on a support arm which is pivotally mounted on a slide arm which is slidably mounted on the support and is movable by actuating rams between the closed position and the open disengaged position.

In another embodiment, blade operating rams for actuating the movable blade are mounted between the slide arm and the support arm, the rams operable to pivot the movable blade to provide a scissors cutting movement in association with the fixed blade for cutting rebar positioned between the blades.

In another embodiment, the feed hopper is mounted on the chassis by a tilt mechanism which is operable for tilting the feed hopper on the chassis to feed material to the crusher.

In another embodiment, the tilt mechanism comprises a pivot mount for pivotally mounting an outlet end of the feed hopper to the chassis and pivot rams engaged between the chassis and the feed hopper to pivot the feed hopper about the pivot mount.

In another embodiment, the pivot mount is movable on the chassis for lifting a front end of the feed hopper on the chassis.

In another embodiment, the pivot mount is slidably movable on the chassis.

In another embodiment, the pivot mount comprises laterally projecting pivot pins on the feed hopper which are slidably movable in associated rearwardly and upwardly inclined slots in upstanding hopper mounting plates at opposite sides of the chassis.

In another embodiment, the conveyor is mounted on the chassis by shock absorbers.

Brief of the

The invention will be more clearly understood by the following description of some embodiments thereof, given by way of example only, with reference to the accompanying drawings, in which:

Fig. 1 is an elevational view of a crusher apparatus according to the invention;

Fig. 2 is another elevational view of the crusher apparatus, shown in another position of use;

Fig. 3 is a further elevational view of the crusher apparatus shown in another position of use;

Fig. 4 is a detail plan view of a rebar shear forming portion of the crusher apparatus;

Fig. 5 is a detail elevational view of the rebar shear shown in Fig. 4; Fig. 6 is a detail plan view of the rebar shear shown in Fig. 4, shown in another position of use;

Fig. 7 is a detail elevational view of the rebar shear shown in Fig. 6;

Fig. 8 is a detail plan view of the rebar shear shown in another position of use;

Fig. 9 is a detail elevational view of the rebar shear shown in Fig. 8;

Fig. 10 is a view similar to Fig. 6;

Fig. 11 is a view similar to Fig. 7;

Fig. 12 is a view similar to Fig. 4; and

Fig. 13 is a view similar to Fig. 5.

Detailed Description of the Preferred Embodiments

Referring to the drawings, there is illustrated a crusher apparatus according to the invention, indicated generally by the reference numeral 1 . The crusher apparatus 1 comprises a chassis 2 which in this case comprises a mobile chassis 2 mounted on tracks 3. A crusher 5 is mounted on the chassis 2. A conveyor 6 is mounted on the chassis 2 below an outlet 7 of the crusher 5. A feed hopper 8 is mounted on the chassis 2 adjacent an inlet 9 of the crusher 5. A rebar shear 10 is mounted on the chassis 2 between the outlet 7 of the crusher 5 and the conveyor 6.

The rebar shear 10 is shown in more detail in Fig. 4 to Fig. 13, and comprises a pair of blades 11 , 12 which are movable together and apart between an operative closed cutting position together, as shown in Fig. 6, and an open disengaged position, as shown in Fig. 4, in which the blades 11 , 12 are spaced-apart from each other in an inoperative position, thus allowing free passage of material discharged from the crusher 5 through the rebar shear 10 and onto the conveyor 6. The blades 11 , 12 comprise a fixed blade 11 and a movable blade 12. The fixed blade 11 is fixed on a support 14 and is positioned on the chassis 2 at one side of the outlet 7 of the crusher 5. The movable blade 12 is mounted on a support arm 13 which is pivotally mounted on a slide arm 15 which is slidably mounted on the support 14 and is movable by means of a pair of actuating rams 16 between the closed cutting position shown in Fig. 6 and the open disengaged position shown in Fig. 4.

Each ram 16 has an hydraulic cylinder 17 and associated piston rod 18 having an inner end which is slidable within the cylinder 17 and connected at its outer end by a pivot pin 19 to the slide arm 15. Each cylinder 17 is secured to the support 14 by a mounting bracket 20.

A set of blade operating rams 22 for actuating the movable blade 12 of the rebar shear 10 is connected to an outer end 23 of the slide arm 15 by a pivot connector 24 and is operable to pivot the movable blade 12 to provide a scissors cutting movement in association with the fixed blade 11 for cutting rebar positioned between the blades 11 , 12.

The set of rams 22 comprise cylinders 25 and associated piston rods 26 which are slidably mounted therein. The cylinders 25 are attached to an inner mounting bracket 27 which is attached by the pivot connector 24 to the outer end 23 of the slide arm 15. Outer free ends of the piston rods 26 are attached to an outer mounting bracket 28 which is attached by a pivot connector 29 to the support arm 13 carrying the movable blade 12.

Conveniently, the movable blade 12 can be moved into the open disengaged position (Fig. 4) at an opposite side of the crusher outlet 7 when not required for cutting rebar material, for example when the crusher 5 is simply crushing stone material, to facilitate unobstructed discharge of crushed material through the crusher outlet 7 and onto the conveyor 6.

Fig. 4 to Fig. 13 show sequential stages in operation of the rebar shear 10. Fig. 4 and Fig. 5 show the rebar shear in the open disengaged position with the slide arm 15 fully extended by rams 16 to position the blades 11 , 12 of the rebar shear 10 apart when not in use. Fig. 6 and Fig. 7 show the rebar shear 10 in the closed cutting position with the blades 11 , 12 moved together into scissors formation by retraction of the slide arm 15 by the rams 16.

Fig. 8 and Fig. 9 show the blades 11 , 12 overlapping in a fully closed position for cutting through rebar positioned between the blades 11 , 12. The rams 22 extend to pivot the support arm 13 with movable blade 12 about pivot 19 in a scissors action with the fixed blade 11.

Fig. 10 and Fig. 11 show the rams 22 retracted to open the blades 11 , 12 again. The scissors action of the blades 11 , 12, shown in Fig. 6 to Fig. 11 , can be repeated, as required, for cutting rebar fed through the crusher 5 outlet 7.

Fig. 12 and Fig. 13 show the rebar shear 10 returned to the open disengaged position again with the blades 11 , 12 spaced-apart from each other at opposite sides of the crusher outlet 7 when the rebar shear 10 is not in use.

Referring now in particular to Figs. 1 to 3, an arrangement whereby the feed hopper 8 can tilt on the chassis 2 will be described. The feed hopper 8 is mounted on the chassis 2 by a tilt mechanism which is operable to tilt the feed hopper 8 on the chassis 2 to facilitate feeding material from the feed hopper 8 into the crusher 5. This is particularly useful for feeding elongate reinforced concrete columns or posts lengthwise through the crusher 5 which crushes and removes the concrete. The rebar which was encased within the concrete feeds down through the crusher outlet 7 between the blades 11 , 12 of the rebar shear 10 which operates to cut the rebar into shorter lengths, typically about 30 cm long, so it will fall onto and be removed by the conveyor 6.

The feed hopper 8 tilt mechanism has a pivot mount 30 for pivotally mounting a front outlet end 31 of the feed hopper 8 on the chassis 2. Associated upstanding hopper mounting plates 32 at opposite sides of the chassis 2 each have a rearwardly inclined slot 34 within which pivot pins of the pivot mount 30, which project laterally outwardly from opposite sides of the feed hopper 8, slide up and down.

Lifting rams 35 associated with each pivot pin of the pivot mount 30 are operable to slide each pivot pin in the associated slot 34 between a lowered position at a bottom of the slot 34, in which position a bottom 36 of the feed hopper 8 sits on a horizontal hopper support bed 37 of the chassis 2 (as shown in Fig. 1) and a raised position at a top of the slot 34 (Fig. 2 and Fig. 3), in which position the front outlet end 31 of the feed hopper 8 is raised and moved rearwardly above the hopper support bed 37.

A pair of tilt rams 39 extend between the chassis 2 and the feed hopper 8 at opposite sides of the feed hopper 8. These tilt rams 39 are operable to tilt the feed hopper 8 about the pivot mount 30, raising a rear end 40 of the feed hopper 8, to feed material from the front outlet end 31 of the feed hopper 8 into the inlet 9 of the crusher 5. Each tilt ram 39 is pivotally attached at anchor points 41 , 42 on the chassis 2 and centrally at a lower end of a side wall of the feed hopper 8 at each side of the feed hopper 8.

It will be appreciated that this feed hopper 8 tilting arrangement allows elongate reinforced concrete columns or other elongate material to be mounted in the feed hopper 8 and by raising and tilting the feed hopper 8 the elongate reinforced concrete columns are fed lengthwise into the crusher 5 for crushing the concrete and chopping up the rebar. An elevator conveyor 45 at a front of the chassis 2 receives crushed concrete and chopped rebar material for delivery into a stockpile.

It will be appreciated that the shear system can also be installed on jaw crushers horizontal shaft impactor crushers, cone crushers, vertical shaft impactor crushers, as well as single, twin shaft and four shaft crusher/shredders.

The terms “comprise” and “include”, and any variations thereof required for grammatical reasons, are to be considered as interchangeable and accorded the widest possible interpretation.

The invention is not limited to the embodiments hereinbefore described but may be varied in both construction and detail with the scope of the appended claims.

Claims

1 . A crusher apparatus for reinforced concrete material comprising: a chassis, a crusher mounted on the chassis, a conveyor mounted on the chassis at an outlet of the crusher, a feed hopper mounted on the chassis at an inlet of the crusher, and a rebar shear mounted on the chassis between the crusher and the conveyor, the rebar shear having a pair of blades which are slidably movable together and apart between a closed cutting position and an open disengaged position in which the blades are spaced-apart from each other, the blades being operable in the closed cutting position to cut a rebar located between the blades.

2. The crusher apparatus as claimed in claim 1 , wherein the pair of blades comprise a fixed blade and a movable blade, the movable blade being movable between the closed cutting position adjacent the fixed blade and the disengaged position remote from the fixed blade.

3. The crusher apparatus as claimed in claim 2, wherein a ram actuator connected to the movable blade is operable for slidable movement of the movable blade between the closed cutting position and the disengaged position.

4. The crusher apparatus as claimed in claim 3, wherein the movable blade is pivotally mounted on a slide arm which is slidably movable on the chassis for slidable movement of the movable blade between the closed cutting position and the disengaged position.

5. The crusher apparatus as claimed in claim 3 or claim 4, wherein the fixed blade is fixed on a support at one side of the crusher outlet and the movable blade is mounted on a support arm which is pivotally mounted on a slide arm which is slidably mounted on the support and is movable by actuating rams between the closed position and the open disengaged position.

6. The crusher apparatus as claimed in claim 5, wherein blade operating rams for actuating the movable blade are mounted between the slide arm and the support arm, the rams operable to pivot the movable blade to provide a scissors cutting movement in association with the fixed blade for cutting rebar positioned between the blades.

7. The crusher apparatus as claimed in any one of the preceding claims, wherein the feed hopper is mounted on the chassis by a tilt mechanism which is operable for tilting the feed hopper on the chassis to feed material to the crusher.

8. The crusher apparatus as claimed in claim 7, wherein the tilt mechanism comprises a pivot mount for pivotally mounting an outlet end of the feed hopper to the chassis and pivot rams engaged between the chassis and the feed hopper to pivot the feed hopper about the pivot mount.

9. The crusher apparatus as claimed in claim 8, wherein the pivot mount is movable on the chassis for lifting a front end of the feed hopper on the chassis.

10. The crusher apparatus as claimed in claim 9, wherein the pivot mount is slidably movable on the chassis.

11 . The crusher apparatus as claimed in claim 10, wherein the pivot mount comprises laterally projecting pivot pins on the feed hopper which are slidably movable in associated rearwardly and upwardly inclined slots in upstanding hopper mounting plates at opposite sides of the chassis.

12. The crusher apparatus as claimed in any one of the preceding claims, wherein the conveyor is mounted on the chassis by shock absorbers.