EP4008881A1 - Flèche extensible pour véhicule d'exploitation minière et véhicule d'exploitation minière - Google Patents

Flèche extensible pour véhicule d'exploitation minière et véhicule d'exploitation minière Download PDF

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Publication number
EP4008881A1
EP4008881A1 EP20210930.2A EP20210930A EP4008881A1 EP 4008881 A1 EP4008881 A1 EP 4008881A1 EP 20210930 A EP20210930 A EP 20210930A EP 4008881 A1 EP4008881 A1 EP 4008881A1
Authority
EP
European Patent Office
Prior art keywords
boom
pulley
extendable
front pulley
cables
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.)
Withdrawn
Application number
EP20210930.2A
Other languages
German (de)
English (en)
Inventor
Arttu PALMU
Heikki Lehtola
Juha Piipponen
Pekka Anttonen
Sirpa LAUNIS
Juho JÄRKKÄLÄ
Risto Kallinen
Stephen Connelly
Kimmo Eronen
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.)
Sandvik Mining and Construction Oy
Original Assignee
Sandvik Mining and Construction Oy
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 Sandvik Mining and Construction Oy filed Critical Sandvik Mining and Construction Oy
Priority to EP20210930.2A priority Critical patent/EP4008881A1/fr
Publication of EP4008881A1 publication Critical patent/EP4008881A1/fr
Withdrawn legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
    • B66C13/14—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices to load-engaging elements or motors associated therewith
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks

Definitions

  • the present invention relates to booms for mining vehicle, and particularly to an extendable boom.
  • the mining apparatuses and vehicles are exposed to harsh environmental conditions like falling objects.
  • the operating cables such as electric, hydraulic, and data transfer cables, are routed outside the booms and they are, thus, exposed to the environment.
  • the cables need to be long enough that they do not break when the boom is extended to its extended position. Therefore, the cables hang loose when the extendable boom is not in extended position and the loose cables may entangle itself.
  • the external cables are prone to break down and the repair and maintenance takes time. While the apparatus is repaired, the apparatus is out of work, which costs. Further, cables routed outside reduce visibility of the operator.
  • the objective of the apparatus is to alleviate the disadvantages mentioned above.
  • apparatus is to provide more efficient extendable boom having special cable routing.
  • the present invention provides, it is an objective of the present an extendable boom for a mining vehicle.
  • the extendable boom comprises an outer boom, an inner boom, having a distal end and a proximal end, arranged at least partly inside the outer boom.
  • the inner boom is arranged to extend in axial direction out of the outer boom. Cables are provided for operating the device.
  • the inner boom comprises a rear pulley in proximity of the proximal end.
  • the inner boom comprises a front pulley mechanism, comprising a front pulley, at a distant from the rear pulley towards the distal.
  • the cables are routed within the inner boom and the outer boom, wherein the cables are arranged to extend from the proximal end towards the distal end, looped around the rear pulley towards the front pulley mechanism, looped around the front pulley towards the distal end.
  • the front pulley mechanism comprises a tensioner device connected to the front pulley.
  • the tensioner device and the rear pulley are fixed, and the front pulley is arranged to move between the tensioner device and the rear pulley.
  • the front pulley is tensioned by the tensioner device towards the tensioner device.
  • the front pulley is arranged to move towards the rear pulley and away from the tensioner device, when the inner boom is extended from the outer boom.
  • the inner boom comprises at least one rod extending from the proximal end towards the distal end, and the rear pulley and the front pulley mechanism are connected to the telescopic tubes.
  • the rod is telescopic tube.
  • the rear pulley is fixed to the at least one rod, and the front pulley is movable along the at least one rod.
  • the distal end is attached to a rotation unit.
  • the inner boom comprises a housing for protecting inner parts from environmental conditions.
  • An advantage of this is that extended inner boom may be protected from environment.
  • the first end and the second end of the cables are fixed outside of the inner boom.
  • the tensioner device is a spring.
  • a hydraulic cylinder is provided within the boom structure for reciprocating the inner boom.
  • the rear pulley and the front pulley mechanism are connected to the hydraulic cylinder.
  • the invention provided a mining vehicle comprising an extendable boom according to any of the above embodiments, wherein the distal end of the inner boom is attached to a rotation unit comprising a working tool, and the cables are routed inside the extendable boom to the rotation unit.
  • Figures 1 and 2 show an overview of an extendable boom for a mining vehicle, such as drilling rig used in mines or construction sites.
  • the extendable boom in a retracted position and in figure 2 the extendable boom is in an extended position.
  • the extendable boom 1 may be connected to a carrier of the mining vehicle from its first end 2 and a rotation unit comprising a feed beam of a mining vehicle having a working tool (e.g. rock drilling machine, reinforcement device, measurement device or hydraulic breaker) may be fastened to the second end 3.
  • a working tool e.g. rock drilling machine, reinforcement device, measurement device or hydraulic breaker
  • the working tool may be connected directly to the second end 3.
  • the extendable boom 1 comprises an outer boom 4 and inner boom 5, which may be connected to a rotation unit.
  • the outer boom 4 forms a housing for the extendable boom 1 and the inner boom 5 is arranged at least partly inside the outer boom 4.
  • the extension of the boom 1 is achieved by moving the inner boom 5 in axial direction out of the outer boom 4.
  • the inner boom 5 has a retracted position, in which the inner boom 5 is in retracted inside the outer boom 4, i.e. the extendable boom 1 is in its shortest length, and an extended position, in which the inner boom 5 is extended out of the outer boom 4, i.e. the extendable boom 1 is in its greatest length.
  • Figure 3 shows a detailed view of the inner parts 6 of the inner boom 5 in the retracted position and figure 4 shows a detailed view of the inner parts 6 of the inner boom 5 in the extended position.
  • the inner boom 5 has two ends, a proximal end 7 and a distal end 8. The proximal end 7 is closer to the first end of the extendable boom 1 and the distal end 8 is the opposite end that is closer to the second end of the extendable boom 1.
  • the inner boom 5 comprises a rear pulley 9, which is provided in proximity of the proximal end 7 and a front pulley mechanism 10, which is provided at a distant from the rear pulley 9 towards the distal end 8.
  • the front pulley mechanism 10 comprises a front pulley 11.
  • the pulley mechanisms are provided for routing cables 12 running inside the extendable boom 1 and within the inner boom 5 and outer boom 4.
  • the cables may include electric cables and/or data transmission cables, such as CAN-cable to feed the boom, drive motor, sensor, brake power and/or encoder cables etc.
  • the cables 12 are extending from the distal end of the inner boom 5 towards the proximal end 7, looped around the rear pulley 9 (i.e. turn 180°) towards the front pulley mechanism 10, looped around the front pulley 11 (i.e. turn 180°) towards the proximal end 7.
  • the front pulley mechanism 10 may comprise a tensioner device 13 which is connected to the front pulley 11.
  • the tensioner device 13 may be for example a spring (e.g. constant force spring or other linear or nonlinear force spring), a cylinder or a winch, which is arranged to form tension between the front pulley 11 and the tensioner device 13, i.e. pulling the front pulley towards the tensioner device.
  • the tensioner device 13 may also be for example a rubber element or a spring, which may be made of rubber.
  • the rear pulley 13 and the tensioner device 13 may be fixed, e.g. to the inner boom 5, while the front pulley 11 is arranged to move between the tensioner device 13 and the rear pulley 13.
  • the front pulley 11 may move towards the rear pulley 13, and away from the tensioner device 13, when the inner boom 5 is extending out of the outer boom 4 to its extended position, i.e. the extendable boom 1 is growing its length.
  • the tensioner device 13 forms a tension between the front pulley 11 and the tensioner device 13, when the inner boom 5 is extending.
  • the front pulley 11 may be pretensioned towards the tensioner device, when the inner boom 5 is in retracted position.
  • the tensioner device 13 and the front pulley 11 may be connected by a wire or wires, such as steel wires, to carry the pretension and retraction force.
  • the front pulley 11 may be arranged to move half of the extended length of the inner boom 5. For example, when the inner boom 5 is extended 1200 mm, the front pulley 11 will move 600 mm towards the rear pulley 13.
  • the inner boom 5 may comprise a hydraulic cylinder 15 for enabling the movement of the inner cylinder between the extended position and retracted position.
  • a fixed clevis 16, or such, may be arranged at the end of the hydraulic cylinder 15 for fastening the hydraulic cylinder 15 to first end of the outer boom.
  • the inner boom 5 may comprise at least one rod extending from the proximal end 7 towards the distal end 8.
  • the inner boom 5 may comprise several rods and the disclosure apply also to the structure where several rods are used. In such structure, the definitions should be understood to applied to rods. Different embodiments of the rod or rods are shown in figures 5 to 8 .
  • the rod provides linear guide and anchor points for the cable routing components, such as the front pulley mechanism 10 and the rear pulley 9, which may be connected to the rod as shown in figures 5 to 8 .
  • the rear pulley 9 and the tensioner device 13 may be fixed to the rod, for example by clamping.
  • the front pulley 11 may be arranged to be movable, e.g. slide, along the rod.
  • the rear pulley 9, front pulley 11 and the tensioner device 13 may be engaged with two parallel rods so that each component comprises two clamping mechanism arranged on opposite sides of each pulley or tensioner device, to engage with parallel rods.
  • the rear pulley 9 may be engaged with different rods than the front pulley 11 and the tensioner device 13.
  • the rod may be extended through the proximal end of the inner boom 5 inside the outer boom 4 and/or the rod may extend through the distal end of the inner boom 5. Thus, it may be used for guiding and moving the inner boom 5 between the extended position and retracted position.
  • Figures 5 to 8 show different kind of structures of inner parts 6 and how the rear pulley 9 and the front pulley mechanism 10 may be implemented inside the inner boom 5.
  • the inner boom 6 comprises several rods, which are service lines 14 of the device.
  • the service lines 14 are used for providing fluids, such as hydraulic fluid, to the working tool and they are extending through the proximal end 7 and the distal end 8.
  • the front pulley mechanism 10 and the rear pulley 9 are connected to the service lines 14.
  • the tubes may be telescopic tubes, which extend when the inner boom 6 is extended.
  • the hydraulic cylinder 15 serves as the rod and the rear pulley 9 and the front pulley mechanism 10 are connected to the hydraulic cylinder 15.
  • the hydraulic cylinder comprises dove tail guides 17.
  • the dove tail guide 17 may be fastened to a cylinder profile and providing even surfaces for the sliding front pulley 11, which enables better control of the movement.
  • the inner boom 6 comprises several rods 18 which are connected to the proximal end 7 and the distal end 8 of the inner boom so that they do not extend through the ends, i.e. the rods are suspended to the end plates.
  • the inner boom 5 may comprise a housing for protecting the inner boom 5 components when the inner boom 5 is extended out of the outer boom 4.
  • the distal end 8 of the inner boom 5 may be connected to a rotation unit, which allows controlling and adjusting of the working tool in desired position.
  • the cables 12 may be fixed outside of the inner boom 5.
  • the first end of the cables may be connected (and fixed) to the carrier of the mining vehicle, and the other end to the working tool of the mining vehicle.
  • the length of the cables inside the extendable boom 1 is constant and the cable extension during the extension of the boom 1 is achieved by the movable front pulley 11.
  • the extendable boom structure may be attached to a mining vehicle, such as a drilling rig used in mines or construction sites.
  • the first end of the boom may be connected to a carrier of the mining vehicle and the distal end 8 of the inner boom 5 is attached to a rotation unit comprising a feed beam of a mining vehicle having a working tool (e.g. rock drilling machine, reinforcement device, measurement device or hydraulic breaker).
  • the working tool may be connected directly to the second end 3.
  • the cables 12 may be routed inside the extendable boom 1 from the carrier of the mining vehicle to the working tool. As the cables are routed inside the boom structure, they are protected from the environment, e.g. falling rocks. Further, they do not hang loose in any situation, which could cause them break when hit to some objects.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Earth Drilling (AREA)
EP20210930.2A 2020-12-01 2020-12-01 Flèche extensible pour véhicule d'exploitation minière et véhicule d'exploitation minière Withdrawn EP4008881A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20210930.2A EP4008881A1 (fr) 2020-12-01 2020-12-01 Flèche extensible pour véhicule d'exploitation minière et véhicule d'exploitation minière

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20210930.2A EP4008881A1 (fr) 2020-12-01 2020-12-01 Flèche extensible pour véhicule d'exploitation minière et véhicule d'exploitation minière

Publications (1)

Publication Number Publication Date
EP4008881A1 true EP4008881A1 (fr) 2022-06-08

Family

ID=73654686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20210930.2A Withdrawn EP4008881A1 (fr) 2020-12-01 2020-12-01 Flèche extensible pour véhicule d'exploitation minière et véhicule d'exploitation minière

Country Status (1)

Country Link
EP (1) EP4008881A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55151800U (fr) * 1979-04-13 1980-11-01
US20030127408A1 (en) * 2000-01-21 2003-07-10 National Crane Corporation Anti-two block wire internal to crane telescopic boom
US20170149229A1 (en) * 2015-11-23 2017-05-25 Wistron Corporation Telescopic device having carrier member, carrier member, and cable thereof
KR20190068658A (ko) * 2017-12-08 2019-06-19 주식회사 진우에스엠씨 붐 인출 인입 장치

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55151800U (fr) * 1979-04-13 1980-11-01
US20030127408A1 (en) * 2000-01-21 2003-07-10 National Crane Corporation Anti-two block wire internal to crane telescopic boom
US20170149229A1 (en) * 2015-11-23 2017-05-25 Wistron Corporation Telescopic device having carrier member, carrier member, and cable thereof
KR20190068658A (ko) * 2017-12-08 2019-06-19 주식회사 진우에스엠씨 붐 인출 인입 장치

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