ITPD20000069A1 - BUCKET PARTICULARLY FOR THE CRUSHING AND SCREENING OF STONE OR SIMILAR STONE MATERIAL. - Google Patents

Description

"BUCKET PARTICULARLY FOR CRUSHING AND SCREENING STONE OR SIMILAR STONE MATERIAL"

DESCRIPTION

The present invention relates to a bucket which is particularly, but not exclusively useful, for crushing and screening crushed stone or similar stone material.

As is known, the quarrying work of crushed stone of predetermined sizes with intended use in ballast, fillings or concretes, requires, in fact, that this crushed stone is reduced according to the aforementioned sizes.

In particular, in addition to the crushing of the crushed stone or similar stone material, its screening must be envisaged which therefore allows to extract from the quarry and prepare diversified sizes suitable for the most diverse fields of application.

Currently, in the quarry, there are machines dedicated exclusively to crushing and screening the crushed stone which are fed by self-propelled means that pick up the crushed stone using buckets.

However, it is obvious that the crushing and screening process, in addition to requiring various types of machinery, involves a first phase of loading the machinery itself and a second phase in which the latter is preparing to crush and sift the crushed stone.

The main aim of the present invention is to provide a bucket, particularly for crushing and sifting crushed stone or similar stone material which solves the drawbacks complained of above by the methods and machinery currently available, in particular by eliminating the need, at least in cases where which do not require large quantities of material, the use of dedicated machinery, practically skipping the stage of loading the crushed stone.

In relation to the main aim, another important object of the present invention is to provide a bucket which achieves high levels of flexibility and economy in the crushing and screening of crushed stone or similar stone material.

Another object of the present invention is to provide a bucket that can be applied to the most varied types of self-propelled means and can be manufactured, in the most diverse dimensional types, in order to satisfy practically any production requirement.

A further object of the present invention is to provide a particularly robust bucket and also suitable for long and heavy loading cycles.

Not least object of the present invention is to provide a bucket which can be manufactured with known technologies and systems.

The main aim, the intended aims and other aims which will appear more clearly hereinafter are achieved by a bucket, particularly for crushing and sieving crushed stone or similar stone material, characterized in that it comprises, articulated to arms for moving self-propelled means , a caisson structure, open in correspondence with a first side placed in front of the direction of advancement, during the removal of the crushed stone, and in correspondence with a second side, opposite to the first, of the exit of the crushed and screened crushed stone, within said structure a crushing and screening unit being supported comprising a mobile crushing plate, pivoted to an area of said structure located in correspondence with said first side, and free to tilt, upon command of actuator / vibrating means, said plate defining with a wall, opposed to it, of said structure itself, a hopper with an outlet section reg can be oiled, in correspondence with said second side, to allow, at the same time as crushing, the screening of the crushed stone, there being motor means suitable to actuate said actuator / vibrator means.

Further characteristics and advantages of the present invention will become clearer from the description of an embodiment thereof, illustrated by way of example, but not limiting its scope, in the attached tables of drawings and figures in which:

- Fig. 1 is a sectioned orthogonal projection of a bucket according to the invention;

Fig. 2 shows in another orthogonal projection the bucket of fig.

1

With particular reference to figs. 1 and 2, a bucket, particularly for crushing and sifting crushed stone or similar stone material, according to the invention, is generally indicated with the number 10.

The bucket 10 comprises, which can be articulated with movement arms and self-propelled means not illustrated, a box-like structure 11, open at a first side 12 placed in front of the direction of advancement, in the step of picking up the crushed stone, and in correspondence with a second side 13, opposite to the first, for the exit of the crushed and screened crushed stone not shown in the figures.

Within the structure 11, a crushing and screening unit is supported, overall numbered 14, comprising a mobile crushing plate 15 pivoted to an area of said structure 11 located in correspondence with the first side 12 and free to tilt upon command of means actuators / vibrators as a whole numbered 16 and better described below.

The plate 15 defines with a wall 17, of the structure 11, opposite it, a hopper with an adjustable outlet section at the second side 13 to allow, simultaneously with the crushing, the screening of the crushed stone.

There are also motor means generally numbered 18 suitable for activating said actuating / vibrating means 16.

The arms of the self-propelled vehicle, not illustrated but of a per se known type, are also adapted to move the structure 11 from a configuration for picking up the crushed stone, in which the first side 12 is placed in front of the direction of advancement, to a crushing / screening in which the aforementioned first and second sides 12 and 13 respectively are arranged vertically aligned, the latter in an underlying position, to allow the crushed stone to fall by gravity and vice versa.

In particular, in this embodiment the actuator / vibrator means 16 are associated with adjustment means numbered as a whole with 19 designed to define the extent of the tilting range of the plate 15 as well as the outlet section relating to the second side 13.

In particular, the regulating means 19 take the form of a first bushing 20 fixed by means of a base plate 21 to the plate 15, in opposition to the side of the latter for processing the crushed stone, in which, in this case, four removable shims 22 in kinematic contact are contained. with the aforementioned means 16.

In particular, the means 16 take the form of a plate-like element 23 with a free end 24 in kinematic contact with a block 25 shaped and inserted in the first bushing 20 and resting against the thicknesses 22, while the other end 26 is fixed to a rotor eccentric 27 coupled to elastic return means 28 and connected by transmission 29 to motor means 18.

In particular, the plate-like element 23 is equipped with reinforcement ribs 30 while the elastic return means are embodied in as many helical springs 31.

In this case, the transmission 29 is of the belt type and the eccentric rotor 27 is associated with two flywheels 32.

In this case, the plate 15 is associated with a fastening shaft 33 inserted in second fixed openable bushings 34 on opposite sides of the structure 11.

The plate 15 is also provided with reinforcing ribs 35.

In this case, the motor means take the form of a hydraulic motor, furthermore the structure 11 is equipped with external brackets 36 for fastening to the aforementioned movement arms, not illustrated.

In practice, the operation of the bucket 10 is as follows: in the loading phase, the bucket 10 itself is placed by the handling arms in such a way that its first side 12 is placed in front of the direction of advancement in order to load a predetermined quantity of crushed stone .

Once a given amount of crushed stone has been loaded, the bucket 10 is raised and placed in such a way that the first side 12 and the second side 13 are vertically aligned with the latter below.

In this position, the actuator / vibrator means 16 come into action which, moving the plate 15, cause the crushing of the crushed stone which, descending substantially along the hopper defined by the latter and by the opposite wall 17, arrives at the defined opening in the second side 13.

A suitable calibration of the means 16 also determines the opening section of the second side 13 itself thus allowing the gravity fall of crushed stone with a given size.

In practice, it has been found that the present invention has brought to a solution the aims set for it.

In fact, the ease of use of the bucket according to the invention should be observed, which combines in itself both the typical withdrawal functions of the traditional bucket, and the crushing and screening functions of dedicated machinery.

In fact, it should be noted that, with the bucket according to the invention, the loading phase of another machinery specifically designed for screening and crushing operations is completely skipped.

For this reason, the cost savings can be easily observed both in terms of purchase and in terms of processing and maintenance times.

It should also be noted that the structure of the bucket according to the invention, not being particularly complicated, can be advantageously used in various application situations and with extreme flexibility.

The present invention is susceptible of numerous modifications and variations, all of which are within the scope of the inventive concept.

The technical details can be replaced with other technically equivalent elements.

The materials as well as the dimensions can be any according to requirements.

Claims (13)

CLAIMS 1) Bucket particularly for crushing and sifting crushed stone or similar stone material, characterized in that it comprises, articulated to arms for moving self-propelled vehicles, a box structure, open at a first side placed frontally a) towards the forward direction , in the step of picking up the crushed stone, and in correspondence with a second side, opposite to the first, where the crushed and screened crushed stone comes out, a crushing and screening unit being supported within said structure comprising a mobile crushing plate, pivoted to an area of said structure located in correspondence with said first side, and free to tilt, on command of actuator / vibrating means, said plate defining with a wall, opposite to it, of said structure, a hopper with an adjustable outlet section, in correspondence of the said second side, to allow, at the same time as the crushing, the screening of the pietris co, there being motor means suitable to actuate said actuator / vibrator means. 2) Bucket as in claim 1 characterized by the fact that said actuating means are associated with adjustment means, designed to define the extent of the tilting range of said plate and of said outlet section relating to said second side. 3) Bucket according to one or more of the preceding claims, characterized in that said adjustment means comprise a first bushing, fixed by means of a base plate to said crushing plate, in opposition to the working side of the crushed stone of the latter, said first bush being containing for one or more removable thicknesses in kinematic contact with said actuator / vibrator means. 4) Bucket according to one or more of the preceding claims, characterized in that said actuating means comprise a plate-like element with free end in kinematic contact with a shaped block inserted in said first bushing and resting against said one or more shims, while the other end is fixed to an eccentric rotor coupled to elastic return means and connected by transmission to said motor means. 5) Bucket according to one or more of the preceding claims, characterized in that said eccentric rotor is associated with one or more flywheels for the regularization of the motion. 6) Bucket according to one or more of the preceding claims, characterized in that said plate-like element is provided with reinforcing ribs. 7) Bucket according to one or more of the preceding claims, characterized in that said elastic return means take the form of one or more helical springs. 8) Bucket according to one or more of the preceding claims, characterized in that said rotor is connected by belt transmission to said motor means. 9) Bucket according to one or more of the preceding claims, characterized in that said crushing plate is equipped with a pivot shaft inserted in second fixed openable bushings on opposite sides of said structure. 10. Bucket according to one or more of the preceding claims, characterized in that said plate comprises reinforcing ribs. 11) Bucket according to one or more of the preceding claims, characterized in that said motor means comprise a hydraulic motor. 12) Bucket according to one or more of the preceding claims, characterized in that said structure is externally equipped with brackets for pivoting to said movement arms. 13) Bucket particularly for crushing and screening crushed stone similar to stone material, as per one or more of the preceding claims which is characterized by what is described and illustrated in the attached tables of drawings and figures.