Abstract: The anti-spin system is applied to a cone crusher having a structure (10) carrying an upper housing (20) and a vertical axle (30); an eccentric element (40) to be rotated around the vertical axle (30); and a cone head (60) disposed inside the upper housing (20) and being axially and rotatively supported on the structure (10) and radially supported around the eccentric element (40). The anti-spin system comprises a braking bush (70) carried by the cone head (60) or by the structure (10), and an annular shoe (80) carried by the other of said parts, which are pressed against each other, by action of the inertial centrifugal force acting on the cone head (60), upon “no-load” operation of the crusher, to generate a friction force opposite and superior to that generated between the cone head (60) and the eccentric element (40) and to prevent the latter from rotatively dragging the cone head (60).

Abstract: A belt conveyor and a crushing unit includes a conveying upper run presenting a feed end and a discharge end, and a return lower run, with the conveying upper end including a curved extension, which is concave and ascending and presents an inlet lower portion and an outlet upper portion of the conveying upper run, where the belt conveyor imparts to the material a path that is substantially coplanar and opposite in relation to that imparted to the material in the inlet portion, and with ascending curved path presenting at a determined belt speed, a centrifugal force sufficient to maintain the material seated against the curved extension of the conveying upper run until reaching the discharge end.

Abstract: The mechanical vibrator is applied to vibrating screens or other equipment and comprises a bearing housing (10) to be affixed to a side wall (2) of the equipment (1), to carry a pair of bearings (20) which support a shaft (30) having an inner end portion (31) and an outer end portion (32) which respectively affix a first and a second counterweight (70, 80). The first and the second counterweights (70, 80) have respective first and second eccentric masses (M1, M2) of different values and which are positioned and dimensioned so that the first and the second counterweight (70,80) generate equal loads on the bearings (20). The second counterweight (80) is constructed to selectively and removably attach a third counterweight (90) presenting a third eccentric mass (M3) maintained aligned with the center line (CL) of the bearing housing (10), to provide a variation of the total eccentric mass of the vibrator (V), without changing the balance of the load distribution on the bearings (20).

Abstract: A bearing arrangement for a roller crusher having a pair of crushing rollers (R), each one including a shaft having end portions, mounted in respective bearing housings carried on a base structure (S) of the crusher, and a median hub portion. The bearing housings of each roller (R) are affixed to a structural frame disposed externally to each roller (R), along one side of the respective roller (R), the structural frame maintaining the bearing housings of each roller (R) rigidly connected to each other. Each bearing housing includes: a base portion affixed to the structural frame and a cover portion turned to the other roller (R) and removably affixed to the base portion.

Abstract: A conical crusher, comprising: an upper housing; a tubular axle lodging a supporting rod. Inside the upper housing is mounted a cone head being axially journalled onto a spherical bearing carried by an upper end of the supporting rod and said cone head being radially and eccentrically journalled around the tubular axle. The supporting rod has a lower end thereof fixed to a piston of a hydraulic cylinder in order to operate as a support means for the cone head and also as an actuator to vertically displace the cone head and adjust the opening of the crushing cavity and also as a protecting means, reducing the hydraulic pressure to prevent overloads. The proposed solution further provides a locking hub mechanism in the cone head.

Abstract: A conical crusher, comprising: an upper housing; a tubular axle lodging a supporting rod. Inside the upper housing is mounted a cone head being axially journalled onto a spherical bearing carried by an upper end of the supporting rod and said cone head being radially and eccentrically journalled around the tubular axle. The supporting rod has a lower end thereof fixed to a piston of a hydraulic cylinder in order to operate as a support means for the cone head and also as an actuator to vertically displace the cone head and adjust the opening of the crushing cavity and also as a protecting means, reducing the hydraulic pressure to prevent overloads. The proposed solution further provides a locking hub mechanism in the cone head.

Abstract: A structural arrangement for vibrating equipments of the type comprising: a pair of lateral plates (10) seated on elastic support means (30); crossbeams (11) defining at least one level of support floor (15); a screen (12) for classifying bulk product and which is secured on a respective support floor (15); and at least two vibrating devices (20) which are driven to make the equipment vibrate. According to the invention, the structural arrangement comprises at least one intermediate longitudinal plate (40) extended along the length of the equipment, between the two lateral plates (10); and at least two coplanar assemblies of crossbeams (11) defining a respective support floor (15), the crossbeams (11) of each assembly presenting an internal end (11a) rigidly affixed to the intermediate longitudinal plate (40) and an external end (11b) rigidly affixed to the adjacent lateral plate (10), each assembly of crossbeams (11) securing a screen (12) thereon.

Abstract: A belt conveyor and a crushing unit includes a conveying upper run presenting a feed end and a discharge end, and a return lower run, with the conveying upper end including a curved extension, which is concave and ascending and presents an inlet lower portion and an outlet upper portion of the conveying upper run, where the belt conveyor imparts to the material a path that is substantially coplanar and opposite in relation to that imparted to the material in the inlet portion, and with ascending curved path presenting at a determined belt speed, a centrifugal force sufficient to maintain the material seated against the curved extension of the conveying upper run until reaching the discharge end.

Abstract: A belt conveyor roller includes a main shaft (2a); a pair of rolling bearings (3) mounted next to the ends of the main shaft (2a); a cylindrical tubular body (4), surrounding the main shaft (2a) and incorporating, inside each opposite end, a cylindrical tubular sleeve (5), having a smaller diameter and being seated on the external path of the respective rolling bearing (3); and a sealing element (50) concentrically disposed in relation to the main shaft (2a), at each end of the latter that is external to a respective rolling bearing (3), wherein an external edge (51a) is attached to the cylindrical sleeve (5), and wherein an internal free edge (52b) is in permanent contact with the surface of a shaft end portion with reduced diameter.

Abstract: An asymmetric mechanical vibrator with external adjustment for vibrating screens and other equipments having a bearing housing fixable to a sidewall P of the equipment and supporting through bearings a central portion of a shaft, which has an end portion, inside the equipment, carrying a balance eccentric counterweight with fixed axial positioning and predetermined axial extension and mass, the shaft having an end portion outside the equipment and carrying a main eccentric counterweight placed nearer the bearing housing than the balance counterweight and having axial dimension and mass greater than those of the balance counterweight, the axial positioning, axial dimension and mass of the main counterweight being selectively variable to generate determined eccentric forces on the vibrator and the same bending moment equal to that produced by the balance counterweight.