EP0183531A2 - Tragbarer Biegeapparat - Google Patents

Tragbarer Biegeapparat Download PDF

Info

Publication number
EP0183531A2
EP0183531A2 EP85308602A EP85308602A EP0183531A2 EP 0183531 A2 EP0183531 A2 EP 0183531A2 EP 85308602 A EP85308602 A EP 85308602A EP 85308602 A EP85308602 A EP 85308602A EP 0183531 A2 EP0183531 A2 EP 0183531A2
Authority
EP
European Patent Office
Prior art keywords
lever
bending
jaw
bent
clamps
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Withdrawn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
EP85308602A
Other languages
English (en)
French (fr)
Other versions
EP0183531A3 (de
Inventor
George Albert Parrott
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.)
Minnovation Ltd
Original Assignee
Minnovation Ltd
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 Minnovation Ltd filed Critical Minnovation Ltd
Publication of EP0183531A2 publication Critical patent/EP0183531A2/de
Publication of EP0183531A3 publication Critical patent/EP0183531A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • B21D7/063—Pliers with forming dies

Definitions

  • This invention relates to portable bending apparatus, for bending elongate, deformable material, e.g. of metal and of symmetrical or asymmetrical solid or hollow section, to a required curvature.
  • deformable material e.g. of metal and of symmetrical or asymmetrical solid or hollow section
  • This invention relates to portable bending apparatus, for bending elongate, deformable material, e.g. of metal and of symmetrical or asymmetrical solid or hollow section, to a required curvature.
  • deformable material e.g. of metal and of symmetrical or asymmetrical solid or hollow section
  • a portable bending apparatus for bending elongate, deformable material, comprising first and second clamps adapted, in use, to be located in a selected, spaced-apart relationship along a length of material to be bent, each clamp providing a fixed jaw adapted, in use, to engage one side of the material to be bent in the plane in which bending is required, and pivotably carrying a lever having lever portions extending to opposite sides of a laterally spaced, lever pivot axis, with a first lever portion provided with a jaw adapted to engage the opposite side of the material to be bent in the plane in which bending is required, and with a second lever portion providing a y pivotal attachment point for power means extending between the levers of each clamp for imposing bending moments on the material via the clamps, the power means comprising a double-acting, hydraulic piston and cylinder unit.
  • each clamp may comprise a pair of parallel cheeks, spaced apart by a distance such that the cheeks may embrace the maximum material section, in one direction, required to be bent by the apparatus.
  • the clamps could be threaded along the material to be bent, or conversely the material fed through the clamps, it is preferred for one clamp cheek to be releasable from the other.
  • the fixed jaw may be welded to the fixed cheek and the releasable cheek secured to the fixed jaw by releasable attachment means such as bolts or studs.
  • the pivotal attachment of the lever to its jaw is of a construction that may readily be disassembled, so that the lever may readily be removed from its cheeks.
  • a pivot pin is preferably carried by the lever, to be pivotably received in support holes provided in the cheeks.
  • disassembly could be effected by providing removable pivot pins, the latter are preferably permanently attached, e.g. by welding, to the levers, and are provided with a flat, and the cheeks with a suitably dimensioned lead-in throat to the support holes, so that the pivot can only be inserted, and removed, when in a predetermined angular position with respect to the cheeks.
  • each pin is preferred for each pin to be provided with two, reduced-diameter necks to engage the support holes, and consequently spaced apart by the cheek spacing.
  • Pivotal attachment of the piston and cylinder unit to the levers is conveniently effected by providing a bifurcated end fitting on both the piston rod and the cylinder of the piston and cylinder unit, with a pivot pin, conveniently readily removable and replaceable, passing through aligned holes in the bifurcated end fitting and in their associated levers. If such a spacing between the clamps is required, to produce the desired eurvature, that the piston and cylinder unit is of insufficient length, then one or more tie bars e.g. of lm or 2m length can be used to extend the effective length of the piston and cylinder unit. Such tie bars will need to have compatible end fittings.
  • jaw positions, or lever positions need to be changed on the material to be bent when adapting the apparatus from one for effecting say concave bends, to one for effecting convex bends, and vise versa.
  • each movable jaw may be provided with a serrated gripping surface, while hydraulic power to the piston and cylinder unit may be provided by a portable, manually operable pump, so that the apparatus, apart from itself being portable, is provided with a portable power pack, so that the apparatus may be used in remote locations where no hydraulic power, or electrical energy to power an electric motor to drive a hydraulic pump, is available.
  • the distance between the support holes of the cheeks and their fixed jaw determines, at least for one set of two levers, one maximum external dimension of the material intended to be bent, and to adapt the apparatus for bending smaller dimensioned materials, one or more sizing blocks may be provided to seat on the fixed jaw and to fill the gap that would otherwise be present. If the apparatus is to be used for instance for the bending of railway rail, or other sections having a web interconnecting spaced-apart flanges, the fixed jaw is conveniently provided with a projecting jaw extension, a terminal end of which is adapted to engage one side of the web.
  • Figures 1 and 2 are diagrammatic plan views of a first embodiment of apparatus in accordance with the invention, for producing respectively concave and convex bends in a vertical plane for bending railway rail intended to be located respectively in holes or on humps;
  • Figures 1 and 2 illustrate the bending, by a first embodiment of portable rail bending apparatus 1 in accordance with the invention, of a bull head railway rail 2 in a vertical plane, the Figure 1 arrangement producing a concave bend so that the rail may accurately follow a dip or swilley as are frequently encountered in mine roadway systems, and the Figure 2 arrangement producing a convex bend so that the rail may accurately follow a hump.
  • the portable rail bending apparatus 1 comprises first and second clamps 3, 4 located in selected, spaced-apart relationship along the rail 2, and interconnected by a double-acting hydraulic piston and cylinder unit 5, so that with the clamps 3 and 4 mounted on the rail 2 in the manner illustrated in Figure 1, then upon retraction of the unit 5 from an intermediate position to the position illustrated in Figure 1, bending moments are applied to the rail 2 by the clamps 3, 4 to produce the concave bend indicated, whilst with the clamps 3 and 4 mounted on the rail 2 in the manner illustrated in Figure 2, then upon extension of the unit 5 from an intermediate position to the position illustrated in Figure 2, bending moments are applied to the rail 2 by the clamps 3, 4 to produce the convex bend indicated.
  • each clamp 3, 4 comprises a pair of parallel cheeks 6, 7 spaced apart from one another such that the cheeks 6, 7 may embrace the maximum section, in one direction, of the rail 2 which is required to be bent by the apparatus 1.
  • the cheek 6 is welded to a fixed jaw 8, while the cheek 7 is releasably attached to the fixed jaw 8 by three screw- threaded studs 9, the fixed jaw 8 being provided with a rail engaging surface 10.
  • the cheeks 6 and 7 are provided with co-axial support holes 11 having a reduced diameter lead-in throat 12.
  • a lever 13 is pivotally supportable in the holes 11 for rotation about a lever pivot axis 14 which is laterally spaced from the rail 2, the lever 13 having a first lever portion 15 extending to one side of the axis 14, constituting a movable jaw 16 and terminating in a serrated gripping surface 17, and a second lever portion 18 extending to the other side of the axis 14.
  • Each lever 13 is provided with a pivot pin 19 co-axial with the axis 14, and welded to the lever portions 15 and 18, the pin 19 being provided with two, reduced-diameter necks 20 adapted to be engaged in the support holes 11, and each neck 20 being provided with a flat so that the lever 13 needs to be manoevered in the position illustrated in chain-dotted line in Figure 3 to align the flat with the throat 12, and after engagement of the necks 20 and the support holes 11, the lever 13 is rotated to the position shown in full and dotted line in Figure 3, for connection to its piston and cylinder unit 5.
  • the second lever portion 18 is provided with a hole 21, which is aligned with corresponding holes 22 in a bifurcated end fitting 23 of a piston rod 24 of the piston and cylinder unit 5, with a removable pivot pin 25 being inserted into the aligned holes.
  • Cylinder 26 of the piston and cylinder unit 5 is provided at its other end with a bifurcated end fitting 27 to receive a pivot pin 25 of the other jaw 4.
  • the apparatus 1 has been located around conventional bull head rail 2, with the rail foot being located on the surface 10 of the fixed jaw 8, and with the gripping surface 17 of the movable jaw 16 engaging the top of the rail head.
  • the fixed and movable jaws are required to engage a web 28 of the rail 2, and the fixed jaw 8 is consequently provided with a jaw extension 29 whilst both cheeks 6, 7 are releasably secured to the fixed jaw 8 by two headed bolts 30 passing through aligned holes in the cheeks 6, 7 and jaw 8, to be secured by a nut 31 with a washer 32.
  • the apparatus 1 is assembled in the manner illustrated in Figures 1, 2, 5 or 6 in accordance with the bend that the user wishes to impart to the rail in question. It will also be appreciated that if it is required to space the jaws 3, 4 by a distance greater than that that can be accommodated by the particular length of piston and cylinder unit 5, then one or more tie rods can be interposed, in a generally known manner, between the bifurcated end fitting 23 and/or 27 and the lever 13 to which that end would otherwise be attached.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP85308602A 1984-11-28 1985-11-27 Tragbarer Biegeapparat Withdrawn EP0183531A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8429982 1984-11-28
GB848429982A GB8429982D0 (en) 1984-11-28 1984-11-28 Portable bending apparatus

Publications (2)

Publication Number Publication Date
EP0183531A2 true EP0183531A2 (de) 1986-06-04
EP0183531A3 EP0183531A3 (de) 1987-07-29

Family

ID=10570370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85308602A Withdrawn EP0183531A3 (de) 1984-11-28 1985-11-27 Tragbarer Biegeapparat

Country Status (3)

Country Link
EP (1) EP0183531A3 (de)
GB (1) GB8429982D0 (de)
ZA (1) ZA859135B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962303A (zh) * 2012-11-26 2013-03-13 安徽长青电子机械（集团）有限公司 一种折弯机
CN111511529A (zh) * 2018-03-01 2020-08-07 三樱工业株式会社 弯曲成形模

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10712C (de) * E. SCHRABETZ in Wien I., Bauernmarkt Nr. 9 Biegevorrichtung für Eisenbahnschienen
DE1784540U (de) * 1958-10-22 1959-03-05 Alois Hasenknopf Presswerkzeug zum hochkantbiegen von flacheisen.
DE2140837A1 (de) * 1970-09-22 1972-05-25 Greenside Hydraulics Ltd., Chapeltown, Sheffield (Großbritannien) Vorrichtung zum Biegen und Richten von Eisenbahnschienen
US3988918A (en) * 1974-01-17 1976-11-02 Manufacturing Research Corporation Cable bender

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10712C (de) * E. SCHRABETZ in Wien I., Bauernmarkt Nr. 9 Biegevorrichtung für Eisenbahnschienen
DE1784540U (de) * 1958-10-22 1959-03-05 Alois Hasenknopf Presswerkzeug zum hochkantbiegen von flacheisen.
DE2140837A1 (de) * 1970-09-22 1972-05-25 Greenside Hydraulics Ltd., Chapeltown, Sheffield (Großbritannien) Vorrichtung zum Biegen und Richten von Eisenbahnschienen
US3988918A (en) * 1974-01-17 1976-11-02 Manufacturing Research Corporation Cable bender

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102962303A (zh) * 2012-11-26 2013-03-13 安徽长青电子机械（集团）有限公司 一种折弯机
CN111511529A (zh) * 2018-03-01 2020-08-07 三樱工业株式会社 弯曲成形模

Also Published As

Publication number Publication date
EP0183531A3 (de) 1987-07-29
ZA859135B (en) 1986-08-27
GB8429982D0 (en) 1985-01-09

Similar Documents

Publication Publication Date Title
EP0240004A2 (de) Bohrhülse zum Bohren von Löchern in Knochen
RU2000119784A (ru) Способ крепления неподвижной щеки щековой дробилки и щековая дробилка
EP0183531A2 (de) Tragbarer Biegeapparat
AU628564B2 (en) Bolt-type boiler wall tube tool
CN1119462C (zh) 钢轨夹紧装置
JPH09302602A (ja) 線路の軌間調整装置
CN1287942C (zh) 焊接装置和焊接方法以及抗剪加强筋的制造方法
JP4146942B2 (ja) 架空送電線の弛度調整に用いる調整工具
CN205157504U (zh) 列车在线探伤用超声波探头模组结构
CN211388609U (zh) 一种安装气弹簧的工装
CN208895996U (zh) 一种配电架空线路楔形线夹专用安装工具
US5724852A (en) Portable small rebar bending machine
CN2287345Y (zh) 一种输电线紧线器
CN220073087U (zh) 一种线索终端回头折弯器
EP0111730B1 (de) Oberleitung für elektrische Bahnen, insbesondere U-Bahnen, in einem Tunnel
CN211596306U (zh) 一种路缘石辅助铺设装置
CN217923135U (zh) 一种滑移轨道连接结构
CN214359717U (zh) 一种高速公路护栏装拆模板专用液压抓手
CN216514903U (zh) 一种调整轨道位置的机构
EP0157073B1 (de) Greifvorrichtung für Antriebsausrüstung
KR102150202B1 (ko) 고속전차선로의 클램프 체결장치
CN218983899U (zh) 一种钢筋桁架生产线
CN221109711U (zh) 一种电缆打弯装置
CN220611800U (zh) 一种铝型材校直设备
CN116398708B (zh) 一种管廊支架维护配件

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE FR GB

17P Request for examination filed

Effective date: 19861119

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE FR GB

17Q First examination report despatched

Effective date: 19880519

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880930

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PARROTT, GEORGE ALBERT