SU795557A1 - Drive for mobile crushing cone of eccentric cone crusher - Google Patents

Description

(54) DRIVE OF THE MOVABLE CRUSHING CONE OF THE ECCENTRIC CONE CRUSHER

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The invention relates to technology. crushing nonmetallic materials and can be used in crushing and grinding ores and other lump materials mainly on quailable crushing plants,

Cone crushers of large, medium and fine crushing are widely used for crushing nonmetallic building materials from rocks of various strengths. Known eccentric cone crushers, including a housing and a crushing cone, between the linings of which a crushing space is formed, the drive shaft, the eccentric shaft and the drive mechanism, have a number of significant drawbacks that reduce the efficiency of their use in the processing of rocks with different physical and mechanical properties. properties on the rubble. During the processing of weak rocks, they give an increased yield of oversized material (fraction - 5 mm), which is often substandard, and during the processing of high-strength rocks - an increased content of flaky grains in the rubble. The reason for the low efficiency of the fraction, Lok, is that they have a constant angle of gyration (the motion of the rolling cone). The energy expended on crushing rocks in these crushers is always the same. At the same time, the index of work consumed for crushing a unit of material depends on the properties of the processed PORODYL. The lower the job index, the more it will be ground up. . It is also known that the shape of the grains of the crushing products of cone crushers depends on the type of fraction “x rocks and the course of the rolling cone. Selection of the stroke of the rolling cone can provide a given shape of the grains of crushing products.

A cone crusher is known, in which the necessary eccentricity of the rolling of the crushing-cone is created by rearranging eccentric inserts with key grooves and fixing them with keys (11.

However, when setting crushers and "relocatable installations, their effectiveness also depends on the type of nepepa6a rock and the purpose of the crushed material. When changing a deposit or a consumer, a complex of spare sleeves with various eccentricities is required for efficient operation of the crusher. At the same time, the design of the crusher is made so that the change of the eccentric bushing requires complete disassembly of the crusher and the eccentric assembly.

The closest to the invention. the technical essence and the achieved effect is the drive of the movable crusher cone of an eccentric cone crusher, containing a conical eccentric bushing placed in the half of an eccentric shaft, connected by means of a gear conical wheel with a bevel gear of a horizontal drive shaft. rd.

However, the driven cone eccentric crusher has an additional eccentric bushing, mounted concentrically on the shank of the crushing cone shaft, with the shaft-eccentric and connected with it by gear rack with the possibility of rotation relative to the shank, and. therefore, such a drive design, resolving the issue of adjusting the oscillation range of a moving fractional cone, is cumbersome and has reduced reliability.

The purpose of the invention is to simplify the design and increase reliability.

This goal is achieved in that the drive of the movable grinding cone of the eccentric tapered core, containing the tapered eccentric sleeve, is placed in the cavity in al. A - an eccentric connected by a gear conical wheel to the bevel gear of the horizontal drive shaft, the gear shaft of the drive shaft is made with the possibility of reciprocating movement along the axis of the vrshtsen and with an additional toothed surface on the side of its outer additional cone, while the eccentric cone and the hub sleeps on a bevel gear, in working condition meshed with the drive shaft gear, and the gear sprocket wheel with internal mi, teeth that engage with the drive shaft, reverse displacement,

Figure 1 schematically shows an eccentric cone crusher with a movable cone in the section; figure 2 - shaft eccentric with eccentric bushing, section AA; on fig.Z - polushenie gears eccentric bushings, v.ela-; eccentric and gear drive when the crusher and when changing the course of the rolling cone.

The crusher has a housing 1, an adjusting ring 2 with a fixed cone 3, a movable crushing cone 4, a shaft 5, which is installed in an eccentric bushing 6 of an eccentric shaft: 7, supplied respectively

bevel gears 8 and 9. The gear 10 of the drive 11 provides rotation of the eccentric shaft and the eccentric sleeve. It has the possibility of axial displacement and disengagement with the gear wheel of the eccentric shaft, remaining in engagement with the gear wheel of the eccentric bushing.

To simplify manufacturing, the bevel gear 8 of the eccentric bushing is made in the form of a block consisting of a wheel 8 and a gear crown 12 connected by a ring 13, while the wheel 8 has an external gear cuts made as a continuation of the gear cuts of the wheel 9 of the eccentric shaft, the crown 12 - -internal, and the gear 10 of the drive 11 is made with two-sided serrated cutting. Before crushing the rock mass, depending on the properties of the rock and the purpose of the crushed material, the optimal course of the moving cone is determined. By shifting the gear 10 of the drive shaft 11, it is disengaged from the wheel 9 of the eccentric shaft 7, which remains in engagement with the wheel 8 of the eccentric bushing b (when the wheel 8 is block-shaped, gear 10 moves to gear with the gear teeth 12). By rotating the pulley of the actuator 11, the eccentric sleeve 6 rotates relative to the shaft eccentric 7 to the desired stroke value of the movable cone. The gear 10 returns to its initial position, the crusher is brought into working condition.

When changing the properties of the processed rock or assigning a crushed product, the optimal course of the rolling cone is established in the same sequence.

the change of the eccentricity of the shaft of the movable cone is carried out in the range from a + b to a - b, where a is the eccentricity of the shaft-eccentric; b - eccentricity of the eccentric sleeve.

Eco :: ohmic efficiency of the proposed crusher is achieved by reducing the labor intensity during its operation by eliminating complete disassembly when changing the course of the moving cone.

Claims (2)

1. Author's certificate of Czechoslovakia №154967, cl. 50 2/01, 1974. 2. Authors certificate of the USSR 636024, cl. B 02 C 2/04, 1976,