US3423033A - Gyratory crushers - Google Patents

Gyratory crushers Download PDF

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Publication number
US3423033A
US3423033A US562761A US56176166A US3423033A US 3423033 A US3423033 A US 3423033A US 562761 A US562761 A US 562761A US 56176166 A US56176166 A US 56176166A US 3423033 A US3423033 A US 3423033A
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United States
Prior art keywords
crusher
torque
cylinder
valve
jack
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Expired - Lifetime
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US562761A
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English (en)
Inventor
Pierre Durand
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Richier SA
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Richier SA
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Publication date
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Publication of US3423033A publication Critical patent/US3423033A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
    • B02C2/04—Crushing or disintegrating by gyratory or cone crushers eccentrically moved with vertical axis
    • B02C2/047—Crushing or disintegrating by gyratory or cone crushers eccentrically moved with vertical axis and with head adjusting or controlling mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
    • B02C2/04—Crushing or disintegrating by gyratory or cone crushers eccentrically moved with vertical axis

Definitions

  • the body is subjected to a torque tending to make it revolve in a direction opposite that of the crushing head but is connected to the frame of the crusher by an arrangement including a retaining device associated with the hydraulic jack so that if the torque required for the crushing operation exceeds a predetermined value, the reverse torque on the body carrying the movable members of the crusher drives the body in the opposite direction and acts through its retaining device on the jack to reduce the gripping action of the crusher until the torque is normal again, whereupon the initial gripping action of the crusher is restored.
  • Gyratory crushers are usually provided with means preventing them from being damaged, which means make it possible for the crushing head and the bowl to be momentarily spaced with respect to each other in the event an uncrushable object enters the gap between said two members.
  • One of such known means consists in mounting the movable members of the crusher on a central hydraulic jack of which the vertical thrust on said members is automatically released at the right moment.
  • the subject-matter of the present invention is a gyratory crusher of the above-mentioned kind, in which the eccentric carrying and actuating the shaft of the crushing head is journaled in a body which is in turn freely mounted inside the frame of the crusher and rests upon a hydraulic jack; said body is subjected to a torque tending to make it rotate in the opposite direction to the crushing head but is connected to the frame through an arrangement including a retaining device associated with the above-mentioned hydraulic jack, so that, if the torque required for the crushing operation exceeds a determined value, the reverse torque on the body carrying the movable members drives said body in the opposite direction and thus acts automatically, through its retaining device, on the jack to reduce the gripping action of the crusher till the torque is normal again, at which time the normal grip of the crusher is restored.
  • Said retaining device advantageously comprises a cylinder linked to the frame of the crusher and closed by a cover through which a rod passes, said rod being linked to the body carrying the movable members and ending in a plunger on which one end of a helical spring takes its movable bearing while the other end of said spring takes its fixed bearing on said cover, the chamber between said plunger and the bottom of said cylinder being connected with the cylinder of the hydraulic jack.
  • the momentary spacing of the crushing head and the bowl is obtained by means of a hydraulic slide valve fed at the same time as the jack setting the position of the crushing head inside the bowl; the slide of said valve, the position of which depends on the value of the reaction torque acting through a roller keyed on said slide and acted upon by an inclined member integral with the mechanism body, is provided with tapered slits which let a leakage flow pass, which fiow depends on the resistance torque and acts upon the feed to the above-mentioned jack setting the position of the crushing head inside the bowl, while a helical spring bearing on the body of the crusher counterbalances, under normal operating conditions, the reaction of the crushing torque.
  • FIGURE 1 is a cross-sectional view of a first embodiment of the crusher of the invention
  • FIGURE 2 is a partial view thereof in plan and in horizontal section
  • FIGURES 3, 4 and 5 are, on an enlarged scale, longitudinal sectional views of the retaining device, in its working position and in two positions corresponding to two possible operations thereof respectively;
  • FIGURE 6 is a vertical sectional view of the second embodiment of the gyratory crusher of the invention.
  • FIGURE 7 is a sectional view of same along line 77 of FIGURE 6;
  • FIGURE 8 is a partial sectional view, on an enlarged scale, along line 8-8 of FIGURE 6;
  • FIGURES 9, 10 and 11 are views of the hydraulic slide valve on an enlarged scale, in sections along lines 99, 1010, 11-11 of FIGURE 8 respectively.
  • FIGURE 1 indicates the frame of the crusher, 3 is the bowl surrounding the latter, 4 is the crushing head movable inside said bowl and carried by a spindle 5 mounted in an eccentric 6 the bottom of which carries a toothed crown 7.
  • the eccentric 6 is mounted to rotate freely inside a body 10 capable of rotation and translation inside the bores 12 and 13 in the frame 2.
  • Said body 10 rests on the plunger 14 of a hydraulic jack the cylinder 15 of which is connected through a line 16 to a source of fluid such as a pump or an accumulator.
  • a cylinder 22 closed by a screwed cover 23 is linked at 21 to an arm 19 on the frame 2.
  • the rod 24 of a plunger 25 passes through the cover 23.
  • Said rod 24 is linked at 26 to an arm 27 integral with the body 10 resting on the jack 14-15.
  • a helical spring 28 is housed inside the cylinder 22 between the plunger 25 and the cover 23, said spring 28 tending to maintain the plunger 25 at the bottom of the cylinder 22.
  • the chamber 29 which is nevertheless defined by the plunger 25, the bottom of the cylinder 22 and the side wall of said cylinder, is connected through a line 30 to the cylinder 15 of the jack 14-15.
  • FIGURES 6 to 11 illustrate another embodiment of a gyratory crusher according to the invention.
  • 40 indicates the frame of the crusher
  • 42 is the bowl which surmounts said frame
  • 43 is the crushing head carried by a shaft 44.
  • the shaft 44 is mounted to revolve freely in two ball bearings 45 and 46 fixed out of center in a hollow shaft 47 two ends of which are guided by bearings 48 and 49 fixed in the casing 50 of the mechanism, as shown in FIG- URE 6.
  • the electric motor 52 drives the hollow shaft 47 through gears 53 and 54 and is fixed on said casing or barrel 50-.
  • the lower part of the casing 50 forms a plunger 55 which is housed inside a cylinder 56 inserted in the frame 40 and bears on the oil which fills said cylinder, so that the elevation of the casing 50 and the crushing head 43 varies in accordance with the quantity of oil fed to the chamber of the jack thus formed.
  • the casing 50 being positioned at its lower end by the cylinder '56 and at its upper end by a cylindrical fitting member 57 in the frame 40, is free to revolve around a vertical axis.
  • Said spring 62 absorbs the reactions resulting from the crushing torque: the greater the crushing strength the greater the angular shifting of the flared tube 59 and the more the spring 62 is compressed.
  • the lower part of the frame 40 is arranged so as to constitute a tank 64 which is filled with oil and contains a hydraulic pump 65- driven by an auxiliary motor 66, and a valve 67 fed at the same time as the cylinder 56.
  • said valve 67 includes a body 68 in the lower part of which two grooves 69 and 70 are machined.
  • the groove 6-9 is connected with the pump 65 while the groove 70, termed an escape groove, is connected through a line 72 to a basin 73 provided in the body 50 so as to ensure the feed of the lubricating circuit for the mechanism of the crusher.
  • a slide valve 7-4 movable inside the bore 75 of the body 68 ensures and controls the supply of oil between the two grooves and is provided with tapered slits 76.
  • a spring 77 one end of which bears on a cap 78 inserted on the body 68 while its other end bears on the slide valve, urges the latter to its lowermost position.
  • the slide valve 74 is extended outside the body 68 by means of a threaded stem 79 on which a support '80 is screwed, a rod 82 screwed in the body 68 preventing the rotation of said support 80.
  • the latter carries a pin on which a roller 83 is keyed.
  • This arrangement makes it possible to adjust the lift of the valve according to the degree of granulometry desired.
  • An arm 88 integral with the body 50 includes a cam 89 comprising a straight section extended by an inclined plane, as shown in FIGURES 9 and 11. Said cam 89 is disposed so as to come into contact with the lower part of the roller 83.
  • the operation of the crusher according to the embodiment just described is as follows: initially the valve 74 is closed, there is no oil in the cylinder 56 and the body 50 of the crusher is in its lowermost position, with the plunger 55 resting on the bottom of the cylinder.
  • the motor 66 is started, the oil immediately supplied by the pump 65 enters the cylinder '56 and causes the plunger and the crusher body to rise while carrying along the cam 89 the right hand side part of which comes into contact with the roller 83 and lifts it.
  • the slide valve 74 moves upwards and there takes place an oil leakage which, through the slits 76, the groove 70 and the line 72, feeds the basin 73.
  • the crushing head 43 On starting the motor 52, the crushing head 43 starts revolving in the direction of the arrow 90' in FIGURE 7. the crushing of the material in the bowl 42 then develops a resistance torque which tends to make the body 50 revolve in the direction of the arrow 92 of said FIGURE 7. Under normal operating conditions, said torque is merely absorbed by the spring 62, the roller 83 of the valve 67 bearing on the right hand side part of the cam 89.
  • the slide valve 74 is in the position shown in FIG- URE 10, which position corresponds to the degree of granulometry desired.
  • a ball valve 93 housed in the lower section of the slide valve 74 makes it possible, in the event of an accidental excess pressure in the circuit, for the oil to escape directly to the oil tank 64 through a line having a wide crosssection, so that the pump is protected. Such excess pressures may be caused by vertical overloads acting on the crushing head.
  • a gyratory crusher of the type in which the movable members rest on a central hydraulic jack characterized in that the eccentric carrying and actuating the shaft of the crushing head is journaled in a body which is in turn freely mounted inside the frame of the crusher and rests on a hydraulic jack, said body being subjected to a torque tending to make it revolve in the opposite direction to the crushing head but being connected to the frame of the crusher by an arrangement including a retaining device associated with said hydraulic jack, so that, if the torque required for the crushing operation exceeds a predetermined value, the reverse torque on the body carrying the movable members of the crusher drives said body in the opposite direction and acts thus automatically, through its retaining device, on the jack to reduce the gripping action of the crusher till, when the torque is normal again, the initial gripping action of the crusher is restored.
  • a gyratory crusher according to claim 5 characterized in that the cam secured to the freely revolving mechanism body is advantageously made of two sections, one straight and the other inclined, the latter acting on the roller integral with the slide only when the reaction of the torque reaches too high a value.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US562761A 1965-07-08 1966-07-05 Gyratory crushers Expired - Lifetime US3423033A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR46200A FR1450771A (fr) 1965-07-08 1965-07-08 Broyeur giratoire
FR46844A FR89515E (is") 1965-07-08 1966-01-21

Publications (1)

Publication Number Publication Date
US3423033A true US3423033A (en) 1969-01-21

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Application Number Title Priority Date Filing Date
US562761A Expired - Lifetime US3423033A (en) 1965-07-08 1966-07-05 Gyratory crushers

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US (1) US3423033A (is")
DE (1) DE1507636A1 (is")
FR (2) FR1450771A (is")
GB (1) GB1101699A (is")

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787563A (en) * 1979-11-17 1988-11-29 Kobe Steel, Ltd. Bearing system for cone type crusher
US5152468A (en) * 1989-07-14 1992-10-06 Lokomo Oy Gyratory crusher
US5738288A (en) * 1996-06-05 1998-04-14 Nordberg Incorporated Conical crusher having a single piece inner crushing member
WO2000021672A1 (en) * 1998-10-14 2000-04-20 Ani Mineral Processing, Inc. Main frame for eccentric cone crusher
CN105855009A (zh) * 2016-04-09 2016-08-17 陈永林 一种电动块茎饲料粉碎装置
CN115007608A (zh) * 2022-05-30 2022-09-06 陕西交通职业技术学院 一种使用经济的建筑废料粉碎装置
CN115199659A (zh) * 2022-08-22 2022-10-18 山东锦盛畜牧机械有限公司 一种循环水冷却轴承座粉碎机
CN119489086A (zh) * 2024-10-25 2025-02-21 江苏壹明保洁工程有限公司 一种具有分类功能的垃圾综合回收处理器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103191800A (zh) * 2012-01-06 2013-07-10 范公奇 液压缓冲装置及具有该液压缓冲装置的圆锥破碎机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267984A (en) * 1938-05-26 1941-12-30 Ind Rayon Corp Method of and means for manufacturing multiple filament thread or the like
US2579516A (en) * 1950-08-28 1951-12-25 Allis Chalmers Mfg Co Gyratory crushfr with vertically adjustable head
US2680571A (en) * 1945-11-20 1954-06-08 Bjarme Johan Alfred Pneumatic release means for gyratory crushers
US3133706A (en) * 1960-11-02 1964-05-19 Fuller Co Gyratory crusher hydraulic adjustment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2267984A (en) * 1938-05-26 1941-12-30 Ind Rayon Corp Method of and means for manufacturing multiple filament thread or the like
US2680571A (en) * 1945-11-20 1954-06-08 Bjarme Johan Alfred Pneumatic release means for gyratory crushers
US2579516A (en) * 1950-08-28 1951-12-25 Allis Chalmers Mfg Co Gyratory crushfr with vertically adjustable head
US3133706A (en) * 1960-11-02 1964-05-19 Fuller Co Gyratory crusher hydraulic adjustment

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787563A (en) * 1979-11-17 1988-11-29 Kobe Steel, Ltd. Bearing system for cone type crusher
US5152468A (en) * 1989-07-14 1992-10-06 Lokomo Oy Gyratory crusher
AU633117B2 (en) * 1989-07-14 1993-01-21 Metso Minerals (Tampere) Oy Gyratory crusher
US5738288A (en) * 1996-06-05 1998-04-14 Nordberg Incorporated Conical crusher having a single piece inner crushing member
WO2000021672A1 (en) * 1998-10-14 2000-04-20 Ani Mineral Processing, Inc. Main frame for eccentric cone crusher
CN105855009A (zh) * 2016-04-09 2016-08-17 陈永林 一种电动块茎饲料粉碎装置
CN115007608A (zh) * 2022-05-30 2022-09-06 陕西交通职业技术学院 一种使用经济的建筑废料粉碎装置
CN115007608B (zh) * 2022-05-30 2023-06-06 陕西交通职业技术学院 一种建筑废料粉碎装置
CN115199659A (zh) * 2022-08-22 2022-10-18 山东锦盛畜牧机械有限公司 一种循环水冷却轴承座粉碎机
CN119489086A (zh) * 2024-10-25 2025-02-21 江苏壹明保洁工程有限公司 一种具有分类功能的垃圾综合回收处理器

Also Published As

Publication number Publication date
GB1101699A (en) 1968-01-31
FR1450771A (fr) 1966-06-24
FR89515E (is") 1967-07-07
DE1507636A1 (de) 1969-04-03

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