Gyratory crusher having dynamically adjustable stroke
First Claim
1. A gyratory crusher for crushing material, comprising:
- (a) a frame structure;
(b) an eccentric member having a first mounting arrangement configured to rotatably mount said eccentric member to said frame structure about a vertically oriented first axis;
(c) a main shaft having a second mounting arrangement configured to rotatably mount said main shaft to said eccentric member about a substantially vertically oriented second axis angularly offset from said first axis;
(d) a crusher head mounted to said main shaft;
(e) drive means for rotating said eccentric member about said first axis; and
(f) stroke adjusting means for selectively continuously adjusting said angular offset of said second axis relative to said first axis such that productivity of said crusher is also selectively continuously adjustable, wherein said stroke adjusting means is substantially axially fixed along said first axis.
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Accused Products
Abstract
A gyratory crusher includes a frame structure; an eccentric member rotatably mounted to the frame structure about a first axis; a main shaft rotatably mounted to the eccentric member about a second axis angularly offset from the first axis; a crusher head mounted to the main shaft and supported by a plurality of hydrostatic bearings, mounted on the frame structure in abutting engagement with the crusher head; a first drive mechanism for rotating the eccentric member about the first axis; and a stroke adjusting mechanism having an outer race continuously and dynamically rotatable about a third axis, angularly offset from both the first and second axes, for adjusting the angular offset of the second axis relative to the first axis. A hydraulic drive mechanism, including a hydraulic motor and a rotary hydraulic connector, distribution lines and ports, for distributing pressurized hydraulic fluid to the hydraulic motor, is provided for rotating the outer race relative to the eccentric member about the third axis. A lock check valve interposed in the distribution system controls the flow of hydraulic fluid to and from the hydraulic motor. The drive mechanism includes a worm gear and a worm gear receiver matingly engaged therewith. A gap adjusting mechanism and a gyrational speed adjusting arrangement are provided for continuously and dynamically adjusting the "closed side setting" and gyrational speed of the crusher, respectively. A method for similarly adjusting the stroke is provided.
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Citations
26 Claims
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1. A gyratory crusher for crushing material, comprising:
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(a) a frame structure; (b) an eccentric member having a first mounting arrangement configured to rotatably mount said eccentric member to said frame structure about a vertically oriented first axis; (c) a main shaft having a second mounting arrangement configured to rotatably mount said main shaft to said eccentric member about a substantially vertically oriented second axis angularly offset from said first axis; (d) a crusher head mounted to said main shaft; (e) drive means for rotating said eccentric member about said first axis; and (f) stroke adjusting means for selectively continuously adjusting said angular offset of said second axis relative to said first axis such that productivity of said crusher is also selectively continuously adjustable, wherein said stroke adjusting means is substantially axially fixed along said first axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A gyratory crusher for crushing material, comprising:
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(a) a frame structure; (b) an eccentric member having a first mounting arrangement configured to rotatably mount said eccentric member to said frame structure about a vertically oriented first axis; (c) a main shaft having a second mounting arrangement configured to rotatably mount said main shaft to said eccentric member about a substantially vertically oriented second axis angularly offset from said first axis, wherein said second mounting arrangement is substantially axially fixed along said second axis; (d) a crusher head mounted to said main shaft; (e) drive means for rotating said eccentric member about said first axis; and (f) gyrational speed adjusting means for continuously and dynamically adjusting the gyrational speed of said crusher.
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22. A method of adjusting the stroke of a gyratory crusher having an eccentric rotatably mounted about a vertically oriented first axis and a conical head rotatably mounted about a substantially vertically oriented second axis by a mounting arrangement having an inner portion centered about the second axis and an outer portion centered about a substantially vertically oriented third axis wherein the mounting arrangement is substantially axially fixed along the first axis and wherein the second axis is angularly offset from the first axis and intersects the first axis at an apex, said method comprising the steps of selectively rotating the outer portion about the third axis such that the stroke is continuously increasable by increasing the angular offset of the second axis relative to the first axis and is continuously decreasable by decreasing the angular offset of the second axis relative to the first axis.
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23. A gyratory crusher for crushing material, comprising:
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(a) a frame structure; (b) an eccentric member having a first mounting arrangement configured to rotatably mount said eccentric member to said frame structure about a vertically oriented first axis; (c) a main shaft having a second mounting arrangement configured to rotatably mount said main shaft to said eccentric member about a substantially vertically oriented second axis angularly offset from said first axis; (d) a crusher head mounted to said main shaft; (e) drive means for rotating said eccentric member about said first axis; (f) stroke adjusting means for adjusting said angular offset of said second axis relative to said first axis;
said stroke adjusting means includes said second mounting arrangement comprising a spherical bearing having;(1) an inner race centered about said second axis, and (2) an outer race configured to be operably rotatable relative to said eccentric member about a substantially vertically oriented third axis wherein said third axis is angularly offset from each of said first and second axes; and (g) second drive means for rotating said outer race relative to said eccentric member about said third axis;
said second drive means includes a hydraulic motor attached to said eccentric member. - View Dependent Claims (25, 26)
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24. A gyratory crusher for crushing material, comprising:
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(a) a frame structure; (b) an eccentric member having a first mounting arrangement configured to rotatably mount said eccentric member to said frame structure about a vertically oriented first axis; (c) a main shaft having a second mounting arrangement configured to rotatably mount said main shaft to said eccentric member about a substantially vertically oriented second axis angularly offset from said first axis; (d) a crusher head mounted to said main shaft; (e) drive means for rotating said eccentric member about said first axis; (f) stroke adjusting means for adjusting said angular offset of said second axis relative to said first axis;
said stroke adjusting means includes said second mounting arrangement comprising a spherical bearing having;(1) an inner race centered about said second axis, and (2) an outer race configured to be operably rotatable relative to said eccentric member about a substantially vertically oriented third axis wherein said third axis is angularly offset from each of said first and second axes; and (g) second drive means for rotating said outer race relative to said eccentric member about said third axis;
said second drive means including a worm gear and a worm gear receiver matingly engaged therewith.
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Specification