US3899212A - Dividing cutting machine having means for rotating the jib arm - Google Patents

Dividing cutting machine having means for rotating the jib arm Download PDF

Info

Publication number
US3899212A
US3899212A US374387A US37438773A US3899212A US 3899212 A US3899212 A US 3899212A US 374387 A US374387 A US 374387A US 37438773 A US37438773 A US 37438773A US 3899212 A US3899212 A US 3899212A
Authority
US
United States
Prior art keywords
swivel head
bracket
rotation
swivel
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US374387A
Other languages
English (en)
Inventor
Siegfried Sigott
Hubert Schwelberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voestalpine AG
Original Assignee
Voestalpine AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voestalpine AG filed Critical Voestalpine AG
Application granted granted Critical
Publication of US3899212A publication Critical patent/US3899212A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/06—Equipment for positioning the whole machine in relation to its sub-structure
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1086—Drives or transmissions specially adapted therefor

Definitions

  • ABSTRACT A bracket is rigidly connected to the frame of the ma- [30] Foreign Application priority Data chine.
  • a swivel head is mounted in the bracket by ra- June w 197,) Ausmll 5647/7, dial and thrust bearing means for rotation about an i 7 7 axis of rotation.
  • the radial and thrust bearing means comprise a radial bearing and also comprise thrust 2 1.
  • a jib arm 299/74 f 1 is mounted in the swivel head for rotation about a 4 ⁇ ZM/ISI swivel axis which crosses the axis of rotation approximately at right angles.
  • the jib arm is mounted on the frame of the machine for rotation in vertical and horizontal directions and can be rotated in these directions by a rotating mechanism.
  • the cutting tool is mounted at the free end of the jib arm and must apply a high cutting pressure so that the jib arm is subjected to high stresses.
  • the rotating mechanism which carries the jib arm must be designed to resist these high stresses. The conditions to which the rotating mechanism is subjected are rendered even more severe by the rough usage in a mine and by the development of dust. For this reason. the rotating mechanism of the known dividing cutting machines is subjected to heavy wear and liable to be deranged.
  • the invention relates to a rotating mechanism which comprises a swivel head. to which the jib arm is mounted for rotation in a vertical direction about a swivel axis. and a bracket.
  • the invention resides essentially in that the swivel head is rotatably mounted by means of a radial bearing and by thrust bearing means which are adapted to take up the axial load in opposite directions and have an effective diameter which exceeds the diameter of the radial bearing. In this way. the load is shared by two bearings. Because the thrust bearing means can take up axial load in opposite directions.
  • the thrust bearing means comprise a plane bearing disc. which is guided between two sliding surfaces extending in parallel planes and which consists particularly of an annular disc whose inner and outer annular zones cooperate each with one of the two parts consisting of the swivel head and bracket.
  • the arrangement is such that the inner annular zone of the annular bearing disc is rigidly connected to one of the two parts. preferably to the bracket. and the outer annular zone is disposed between and guided by sliding surfaces of the other of the two parts. preferably (ill the swivel head.
  • the outer annular zone of the bearing disc acts as a thrust bearing and a relatively large effective diameter can be selected for said thrust bearing because in cutting machines of the kind under consideration an increase of the horizontal dimensions of the rotating mechanism can be more readily toleratcd than an increase of the vertical dimensions thereof as the overall height is limited.
  • the outside diameter of the sliding surfaces of the bearing disc may be one-fourth to one-third of the largest overhang of the jib arm. measured from the axis of rotation of the swivel head to the center of the cutting tool.
  • the radial bearing is a self-aligning bearing which has a certain freedom of axial movement. As a result. this radial bearing takes up only horizontal forces and an axial clamping of the radial bearing which might result from manufacturing inaccuracies or from an axial backlash and which may cause a premature wear of the radial bearing is avoided.
  • the radial bearing consisting. e.g. of a self-aligning bearing. is suitably axially spaced from the bearing disc and close to a driving gear carried by the swivel head so that the radial bearing can directly take up the reaction forces which are due to the rotary movement imparted to the swivel head.
  • FIG. 1 is a sectional view showing the rotating mechanism and FIG. 2 is a side elevation showing the dividing cutting machine.
  • a swivel head I is mounted in a bracket 2 for rotation about an approximately vertical axis of rotation 3.
  • the bracket 2 is secured at 4 to a frame 5 of the dividing cutting machine. which is movable on endless tracks 6.
  • a bridge 8 is mounted on the swivel head 1 for pivotal movement about an approximately horizontal swivel axis 7 and carries a jib arm 9.
  • a rotating cutting tool II) is mounted on the free end of the jib arm 9 for rotation about a horizontal axis 1 I.
  • the swivel head is provided at its other end with eyes 12. to which hydraulic actuators 15 are pivoted by a pivot I3. Pistons I4 of said actuators are connected by a pivot 16 to hearing eyes I7 of the bridge 8.
  • These hydraulic actuators l5 serve to swivel the jib arm 9 about the horizontal axis 7.
  • An annular bearing disc 18 has an inner annular zone I8. which is rigidly connected by screws 19 to the bracket 2.
  • An outer annular zone I8" of the disc I8 is disposed between and guided by bearing surfaces 20 and 21 of the swivel head I.
  • a drive pinion 22 is axially spaced from the bearing disc 18 and is connected to the swivel head 1 by a torque-limiting clutch 23. Directly beside this pinion.
  • a self-aligning bearing 24 is provided between the bracket 2 and the swivel head 1.
  • a rack 25 is mounted in the bracket 2 and is in mesh with the pinion 22 to form the means for rotating the swivel head 1 so as to rotate the jib arm 9 in a horizontal direction.
  • the rack 25 is operated by two single-acting hydraulic actuators. which are not shown.
  • the annular bearing disc 18 forms the thrust bearing and the self-aligning bearing 24 forms the radial bearing for the swivel head 1.
  • the thrust bearing can take up a load in opposite axial directions because the annular disc 18 is disposed in the zone 18 between the two sliding surfaces 20 and 21 of the swivel head 1.
  • the radial bearing 24 takes up the radial forces. which are horizontally directed. the bearing disc 18 is relieved from such radial forces.
  • the sliding surfaces of the bearing disc 18 consists only of the parallel plane surfaces which cooperate with the sliding surfaces 20 and 21 whereas peripheral surface 26 has no bearing function and there may be a backlash at said peripheral surface.
  • This bearing disc 18 takes up all vertically acting forces as well as the tilting forces acting about an imaginary horizontal axis. In theory. a
  • the radial bearing 24 consists of a selt aligning hearing. which has a certain freedom of movement also in the axial direction because its outer race 27 is axially movable in a turned aperture 28 formed in the bracket 2.
  • the bearing disc is large in diameter.
  • the outside diameter a is one-third to one-fourth of the largest overhang I; of the jib arm 9 measured from the axis of rotation 3 of the swivel head 1 to the center 11 of the cutting tool 10.
  • the inner annular zone 18 of the bearing disc 18 is connected to the bracket 2 on one side by the screws 19.
  • a gap 29 is defined by the zone 18 and the swivel head. and lubricating passages 30 open into said gap.
  • This gap is sealed at the inner edge of the bearing disc 18 by a seal 31.
  • the gap 32 between the swivel head 1 and the bracket 2 is also sealed by a seal 33 so that the sliding surfaces 20 and 21 are lubricated by the grease which is forced into the gap 29.
  • a lubricating passage 34 is provided for the lubrication of the self-aligning bearing 24.
  • the design is such that that portion 35 of the swivel head 1 which surrounds the bearing disc extends above and protrudes over the drive means consisting of the hydraulic actuators 15 and the slewing drive 22. 25.
  • a rooflike extension 36 is also provided. All gaps 37 and 32 between the swivel head 1 and the bracket 2 extend downwardly from the thrust bearing which comprises the disc 18 so that the bearings are fully protected.
  • a dividing cutting machine which comprises:
  • said thrust bearing means including (i) a plane annular bearing disc having inner and outer annular zones. said bearing disc being rigidly connected on one side in said inner annular zone with one of the parts consisting of said bracket and swivel head. and (ii) two axially spaced apart confronting parallel plane sliding surfaces formed on the other of said parts consisting of said bracket and swivel head. said outer annular zone of said disc being disposed between and guided by said sliding surfaces, and
  • a jib arm which is mounted in said swivel head for rotation about a swivel axis which crosses said axis of rotation approximately at right angles.
  • a cutting tool is mounted on said jib arm at said free end for rotation about a tool axis.
  • said bearing disc has annular surfaces in sliding contact with one of the parts consisting of said bracket and said swivel head. said annular surfaces having an outside diameter which is one-fourth to one-third of the distance from said axis of rotation to said tool axis measured along said jib arm.
  • said radial bearing is axially spaced from said bearing disc and close to said drive gear.
  • slewing drive means are connected to said swivel head to rotate the same about said axis of rotation.
  • said swivel head has a portion which surrounds said bearing disc and is disposed above and protrudes over said swivel drive means and slewing drive means.
  • a dividing cutting machine comprising:
  • said thrust bearing means including (i) a plane annular bearing disc having inner and outer annular zones, said bearing disc being rigidly connected on one side in said inner annular zone with one of the parts consisting of said bracket and swivel head,
  • said inner annular zone defining. on a side opposite the side of said disc connected to one of the parts, a gap with the other of said parts, and wherein said parts define additional gaps between them, and wherein means are provided to seal said additional gaps and at least one lubricating channel leads to the said first mentioned gap, and (ii) two axially spaced apart confronting parallel plane sliding surfaces formed on the other of said parts consisting of said bracket and swivel head, said outer annular zone of said disc being disposed between and guided by said sliding surfaces, and
  • ajib arm which is mounted in said swivel head for rotation about a swivel axis which crosses said axis of rotation approximately at right angles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Machine Tool Units (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Jib Cranes (AREA)
  • Combines (AREA)
  • Sliding-Contact Bearings (AREA)
US374387A 1972-06-30 1973-06-28 Dividing cutting machine having means for rotating the jib arm Expired - Lifetime US3899212A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT564272A AT321851B (de) 1972-06-30 1972-06-30 Schwenkwerk für teilschnitt-schrämmaschinen

Publications (1)

Publication Number Publication Date
US3899212A true US3899212A (en) 1975-08-12

Family

ID=3578032

Family Applications (1)

Application Number Title Priority Date Filing Date
US374387A Expired - Lifetime US3899212A (en) 1972-06-30 1973-06-28 Dividing cutting machine having means for rotating the jib arm

Country Status (20)

Country Link
US (1) US3899212A (xx)
JP (1) JPS5331081B2 (xx)
AR (1) AR203370A1 (xx)
AT (1) AT321851B (xx)
BE (1) BE801772A (xx)
BG (1) BG30179A3 (xx)
BR (1) BR7304876D0 (xx)
CA (1) CA987352A (xx)
CS (1) CS174212B2 (xx)
DD (1) DD104597A5 (xx)
DE (1) DE2332473C3 (xx)
ES (1) ES416390A1 (xx)
FR (1) FR2191017B1 (xx)
GB (1) GB1414211A (xx)
PL (1) PL87074B1 (xx)
RO (1) RO61689A (xx)
SE (1) SE404061B (xx)
SU (1) SU592371A3 (xx)
YU (1) YU35912B (xx)
ZA (1) ZA734358B (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133582A (en) * 1977-10-18 1979-01-09 Kogelmann Wilhelm J Low profile mining machine
US4675035A (en) * 1986-02-24 1987-06-23 Apffel Fred P Carbon dioxide absorption methanol process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503381B1 (de) * 2005-12-20 2008-09-15 Voest Alpine Bergtechnik Vortriebs- und gewinnungsmaschine
CN109653744B (zh) * 2019-01-14 2023-05-12 广西恒为建材科技有限公司 一种步履式岩石采掘机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2284677A (en) * 1940-03-23 1942-06-02 Sullivan Machinery Co Mining apparatus
US2327928A (en) * 1940-05-18 1943-08-24 Sullivan Machinery Co Mining apparatus
US2776809A (en) * 1953-05-19 1957-01-08 Joy Mfg Co Method of and apparatus for mining by drilling, coring, and breaking
US3471888A (en) * 1966-01-03 1969-10-14 Grant Inc Louis A Soaking pit chipper
US3661274A (en) * 1969-01-14 1972-05-09 Frank G Woodside Vehicle mounted hoist

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2284677A (en) * 1940-03-23 1942-06-02 Sullivan Machinery Co Mining apparatus
US2327928A (en) * 1940-05-18 1943-08-24 Sullivan Machinery Co Mining apparatus
US2776809A (en) * 1953-05-19 1957-01-08 Joy Mfg Co Method of and apparatus for mining by drilling, coring, and breaking
US3471888A (en) * 1966-01-03 1969-10-14 Grant Inc Louis A Soaking pit chipper
US3661274A (en) * 1969-01-14 1972-05-09 Frank G Woodside Vehicle mounted hoist

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133582A (en) * 1977-10-18 1979-01-09 Kogelmann Wilhelm J Low profile mining machine
US4675035A (en) * 1986-02-24 1987-06-23 Apffel Fred P Carbon dioxide absorption methanol process

Also Published As

Publication number Publication date
DE2332473B2 (de) 1977-12-08
DD104597A5 (xx) 1974-03-12
SU592371A3 (ru) 1978-02-05
JPS4943801A (xx) 1974-04-25
FR2191017A1 (xx) 1974-02-01
AT321851B (de) 1975-04-25
PL87074B1 (xx) 1976-06-30
JPS5331081B2 (xx) 1978-08-31
BE801772A (fr) 1973-10-15
CA987352A (en) 1976-04-13
CS174212B2 (xx) 1977-03-31
BR7304876D0 (pt) 1974-09-05
GB1414211A (en) 1975-11-19
BG30179A3 (en) 1981-04-15
ZA734358B (en) 1974-06-26
DE2332473A1 (de) 1974-01-17
RO61689A (xx) 1977-05-15
AU5752773A (en) 1975-01-09
SE404061B (sv) 1978-09-18
ES416390A1 (es) 1976-02-16
FR2191017B1 (xx) 1977-05-13
YU178573A (en) 1980-12-31
AR203370A1 (es) 1975-09-08
DE2332473C3 (de) 1978-08-03
YU35912B (en) 1981-08-31

Similar Documents

Publication Publication Date Title
CN110552614A (zh) 旋挖钻机动力头及相应的旋挖钻机
GB2075874A (en) Rotary index table
US3899212A (en) Dividing cutting machine having means for rotating the jib arm
GB1363917A (en) Extensible boom for carrying and positioning or guiding a tool such as a rock breaking or mining tool
CN211039472U (zh) 一种用于起重机械的360°机械锁止机构
US3863994A (en) Bidirectional roller cutter
CN205572054U (zh) 一种凸轮滚子无间隙数控分度转台结构
CN105965070A (zh) 一种具有旋转移动式导向箱的机床
CN101899974B (zh) 一种掘进机及其浮动密封装置
CN104454957A (zh) 工作装置铰接机构
CN101559563B (zh) 一种机床回转工作台
US4147391A (en) Swivel mechanism for kerf-cutting machines
JP2007009598A (ja) 作業機械の連結ピン構造
US4339161A (en) Bearing seal for a drill head assembly
JPS62158543A (ja) 鍛造機
US4251112A (en) Apparatus for pivotally positioning a clearing shield for a drum-cutter mining machine
CN201730616U (zh) 一种掘进机及其浮动密封装置
CN106090234B (zh) Tbm主轴承内外密封润滑冲刷系统及冲刷方法
SU804832A1 (ru) Исполнительный орган проходческогоКОМбАйНА
KR940005218Y1 (ko) 작업물 이동용 집게 취부장치
US2699078A (en) Machine tool clamping mechanism
US295580A (en) Osgood
CN214557460U (zh) 一种稳固型金属切削机床主轴
SU968421A1 (ru) Исполнительный орган проходческой машины
CN212217114U (zh) 轴承套圈车削用提升机