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Gyratory crusher with piston

A gyratory crusher, piston technology, applied in grain processing and other directions, can solve problems such as piston cracking, fracture, piston deformation, etc., to achieve the effect of increasing the crushing force

Inactive Publication Date: 2014-02-26
SANDVIK INTELLECTUAL PROPERTY AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This deformation of a conventional piston results in a corresponding deformation or at least a temporary change in the shape of the thrust bearing, i.e. the known thrust bearing comprises three horizontal bearing plates which are subsequently also deformed or at least bent, resulting in a gap between these plates. Lubrication gets worse and eventually increases wear and heat between
[0006] As mentioned above, the crushing forces acting on the piston lead to deformation problems of the piston
Crushing forces and deformations can cause weakening of the piston, resulting in cracking and breaking of the piston

Method used

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  • Gyratory crusher with piston
  • Gyratory crusher with piston
  • Gyratory crusher with piston

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Embodiment Construction

[0039] will now refer to Figure 7-12 Describe the piston and crusher. Crusher 10 ( Figure 7 ) has a frame 40 comprising an upper frame portion 41 and a lower frame portion 42 comprising a hub 43 . The vertical central axis 60 is via a spherical support in the cylinder-piston assembly 30 (see Figure 7-10 ) and supported by the lower frame portion 42 of the frame 40, the cylinder-piston assembly 30 includes thrust bearings 39 (see Figure 7-12 ), the thrust bearing 39 is arranged on the piston 31 arranged in the hydraulic cylinder arranged in the frame 40 . The eccentric 61 is rotatably arranged around the central axis 60, ie mounted on the shaft, about which the eccentric is adapted to rotate. The crushing head 70 is mounted around the central axis and thus indirectly in the eccentric 61 . The drive shaft is arranged to rotate the eccentric 61 about the central axis 60 by means of a conical gear meshing with a ring gear connected to the eccentric. The eccentric compris...

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Abstract

A piston (31) for a gyratory crusher; which piston is cylindrical and hollow and comprises a piston wall (34), a piston top (32) and a piston bottom (33), which piston wall comprises at least one opening (391) leading into an inner chamber of the hollow piston, which piston wall comprises an outer sliding surface and an inner chamber surface. Said piston further comprises at least one supporting structure (36) connecting the piston top (32) and the piston bottom (33).

Description

technical field [0001] The invention relates to a gyratory crusher comprising a piston for a gyratory crusher; the piston is cylindrical and hollow and comprises a piston wall, a piston top and a piston bottom, the piston wall including a piston opening into said hollow piston At least one opening in the inner chamber of the piston wall includes an outer sliding surface and an inner chamber surface. Background technique [0002] In the fine crushing of hard materials such as stone or ore blocks, material having an initial size of about 100mm or less is broken down to a size typically of about 0-25mm. Crushing, such as fine crushing, is usually carried out by means of gyratory crushers. Known crushers have an outer casing mounted in a frame. The inner casing is fastened to the crushing head. The inner and outer shells are usually cast in manganese steel that undergoes strain hardening, ie such steel increases in hardness as it is exposed to mechanical action. [0003] Kno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C2/04
CPCB02C2/047
Inventor 本特-阿恩·埃里克松马丁·尼尔松尼克拉斯·阿伯格
Owner SANDVIK INTELLECTUAL PROPERTY AB
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