GB1402655A - Hydraulic jack - Google Patents

Hydraulic jack

Info

Publication number
GB1402655A
GB1402655A GB4264972A GB4264972A GB1402655A GB 1402655 A GB1402655 A GB 1402655A GB 4264972 A GB4264972 A GB 4264972A GB 4264972 A GB4264972 A GB 4264972A GB 1402655 A GB1402655 A GB 1402655A
Authority
GB
United Kingdom
Prior art keywords
wires
plate
wedges
sleeves
cylinder
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
Application number
GB4264972A
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.)
Manufacturas de Acero y Caucho SA
Original Assignee
Manufacturas de Acero y Caucho SA
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 Manufacturas de Acero y Caucho SA filed Critical Manufacturas de Acero y Caucho SA
Publication of GB1402655A publication Critical patent/GB1402655A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/12—Connections or attachments, e.g. turnbuckles, adapted for straining of cables, ropes, or wire
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing
    • E04G21/121—Construction of stressing jacks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • F15B11/0365—Tandem constructions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49874—Prestressing rod, filament or strand

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Bridges Or Land Bridges (AREA)
  • Piles And Underground Anchors (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

1402655 Tensioning wires &c. MANUFACTURAS DE ACERO Y CAUCHO SA 14 Sept 1972 [14 Sept 1971] 42649/72 Heading F2G Wires, cables, rods or the like 108 are tensioned and then anchored in an anchoring plate 107 by a jack comprising a striker plate 112 for driving wedges 110 against the wires &c. 108 in bores in the anchoring plate 107, and a tubular housing 101 within which a front cylinder 114 is drivable to strike the striker plate 112 and a rear cylinder 123 is drivable to move wire gripping means 132, 135 so as to tension the wires. As shown, the front and rear cylinders are driven by admitting hydraulic fluid through ducts 120, 127, 129 into annular chambers 119, 128, 120. The wires 108 are passed through the anchor plate 107, with the wedges 110 in position, and also through the striker plate 112. A bearing member 111 is located around the anchoring state 107 and the wire ends are threaded into bores 143, 134 in an unclamping plate 142 and gripping block 132 and through sleeves 144, 139 surrounded by springs 147, 141. The sleeves 144 urge gripping wedges 135 away from their seats 134. Fluid is admitted through the duct 127 into the chamber 128 to drive the rear cylinder 123 away from plate 107. The springs 147 urge the unclamping plate 142 forwardly of the block 132, withdrawing the sleeves 144 from contact with the wedges 135 which now grip the wires 108 under the influence of the spring sleeves 139. Thus the wires 108 are tensioned to the required extent. Fluid is then admitted to the chamber 119 through the duct 120 driving the front cylinder 114 against an annular member 113 which strikes the striker plate 112 to anchor the wires 108 by the wedges 110. Springs 121 then return the member 113 and cylinder 114. Fluid is admitted through the duct 129 to chamber 130. The rear cylinder 123 is still connected to the wires 108 so the housing 101 moves away from the anchoring plate 107 until bolts 149 abut the unclamping plate 142 so that the sleeves 144 move the wedges 135 away from the seats 134 to release the wires 108. The jack can then be removed leaving the tensioned wires anchored to the plate 107. In another embodiment, the gripping wedges (17) (Figs. 1, 2, 3, not shown) may be released by moving back the plate (21) on which they are mounted.
GB4264972A 1971-09-14 1972-09-14 Hydraulic jack Expired GB1402655A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1971172706U ES172706Y (en) 1971-09-14 1971-09-14 HYDRAULIC CYLINDER FOR PULLING CONSTRUCTION RODS.

Publications (1)

Publication Number Publication Date
GB1402655A true GB1402655A (en) 1975-08-13

Family

ID=8347794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4264972A Expired GB1402655A (en) 1971-09-14 1972-09-14 Hydraulic jack

Country Status (13)

Country Link
US (1) US3844023A (en)
JP (1) JPS5221783B2 (en)
AT (1) AT322803B (en)
AU (1) AU476924B2 (en)
BE (1) BE788294A (en)
CA (1) CA981429A (en)
CH (1) CH560827A5 (en)
DE (1) DE2244115A1 (en)
ES (1) ES172706Y (en)
FR (1) FR2152557B1 (en)
GB (1) GB1402655A (en)
IT (1) IT967431B (en)
NL (1) NL7212092A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106752A (en) * 1976-05-04 1978-08-15 Buildinter Ag Jack for stressing concrete re-inforcement elements
GB2136073A (en) * 1983-03-01 1984-09-12 Stronghold International Aktie Hydraulic Jack for Stressing Elongate Elements
US4573662A (en) * 1984-04-03 1986-03-04 Stronghold International Ag Hydraulic jack for stressing elongate elements
GB2261482A (en) * 1991-11-12 1993-05-19 Pilgrim Eng Dev Rod tensioning

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2502984A1 (en) * 1974-01-30 1975-07-31 Ahlgren Nils H HEAVY DUTY LIFTING EQUIPMENT
GB1527601A (en) * 1974-12-10 1978-10-04 Buildinter Ag Jack for stressing and anchoring tendons
FR2300873A1 (en) * 1975-02-15 1976-09-10 Dyckerhoff & Widmann Ag DEVICE FOR TENSIONING AND RELAXING STRESS IRON BEAMS FOR PRE-STRESSED CONCRETE
CH597470A5 (en) * 1976-07-02 1978-04-14 Bureau Bbr Ltd
CH618491A5 (en) * 1977-02-11 1980-07-31 Losinger Ag
US4274618A (en) * 1979-08-20 1981-06-23 Orr James A Strand lifting system
IT1135752B (en) * 1981-04-17 1986-08-27 Nuovo Pignone Spa IMPROVEMENTS IN THE POWER STAGE OF A GAS TURBINE
FR2518302A1 (en) * 1981-12-14 1983-06-17 Commissariat Energie Atomique PROCESS FOR MANUFACTURING A LIGHT WATER TYPE NUCLEAR REACTOR COMBUSTIBLE ASSEMBLY AND TOOLS FOR CARRYING OUT THE PROCESS
US4604003A (en) * 1983-02-22 1986-08-05 Francoeur Ronald A Method and apparatus for retensioning prestressed concrete members
SU1404693A1 (en) * 1984-04-24 1988-06-23 Управление "Спецшахтомонтаж" Производственного Объединения По Добыче Угля "Карагандауголь" Hydraulic step drive
DE3437108A1 (en) * 1984-10-10 1986-04-10 Dyckerhoff & Widmann AG, 8000 München DEVICE FOR USE IN THE ASSEMBLY OF A TENSION MEMBER OF STEEL WIRE, STRAND, OR THE LIKE
FR2589536B1 (en) * 1985-11-04 1988-07-08 Framatome Sa TENSIONING DEVICE FOR TIGHTENING AND UNLOCKING BOLTS OR STUDS
US4862576A (en) * 1988-08-30 1989-09-05 Lu Hsi H Method for restressing and locking HHL anchor
US5289626A (en) * 1989-03-27 1994-03-01 Kajima Corporation Foundation anchor and method for securing same to a foundation
KR20020045899A (en) * 2000-12-11 2002-06-20 창 훈 이 Removable Ground Anchorage and Method Disassembling Tensile Memberes
US6684585B2 (en) * 2001-05-30 2004-02-03 Robert Campbell Method and apparatus for providing a visual indication of the tension applied to a tendon of a post-tension system
DE102005010957A1 (en) * 2005-03-10 2006-09-14 Dywidag-Systems International Gmbh Method and arrangement for tensioning a step anchor
JP5542961B2 (en) * 2009-12-24 2014-07-09 ファウ・エス・エル・インターナツイオナール・アクチエンゲゼルシヤフト Method and system for adjusting multiple strands to equal tension
CN101774515B (en) * 2010-01-15 2012-04-25 孟建 Ones-way continuous towing mechanism
US9930828B1 (en) * 2015-06-04 2018-04-03 Debra Kornegay Self-cleaning rake
CN105110232A (en) * 2015-09-06 2015-12-02 四川泸州派克斯液压机械有限公司 Front clamping type center-penetrating jack
CN110409301A (en) * 2019-08-16 2019-11-05 苏德永 A kind of HiAm anchorage pier nose anchor slab mounting tool and method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096075A (en) * 1960-12-09 1963-07-02 Brown Oil Tools Hydraulic pipe snubber for oil wells
US3176961A (en) * 1962-03-05 1965-04-06 John P Glass Hydraulic jack apparatus
FR1597937A (en) * 1968-05-28 1970-06-29
US3597830A (en) * 1968-11-29 1971-08-10 Lawrence R Yegge Method and apparatus for post tensioning and anchoring prestressing tendons

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4106752A (en) * 1976-05-04 1978-08-15 Buildinter Ag Jack for stressing concrete re-inforcement elements
GB2136073A (en) * 1983-03-01 1984-09-12 Stronghold International Aktie Hydraulic Jack for Stressing Elongate Elements
US4573662A (en) * 1984-04-03 1986-03-04 Stronghold International Ag Hydraulic jack for stressing elongate elements
GB2261482A (en) * 1991-11-12 1993-05-19 Pilgrim Eng Dev Rod tensioning
GB2261482B (en) * 1991-11-12 1995-02-15 Pilgrim Eng Dev Rod tensioning

Also Published As

Publication number Publication date
ES172706Y (en) 1972-08-16
IT967431B (en) 1974-02-28
NL7212092A (en) 1973-03-16
CA981429A (en) 1976-01-13
AU4642772A (en) 1974-03-14
JPS4836845A (en) 1973-05-31
BE788294A (en) 1973-01-02
US3844023A (en) 1974-10-29
FR2152557A1 (en) 1973-04-27
AU476924B2 (en) 1976-10-07
AT322803B (en) 1975-06-10
CH560827A5 (en) 1975-04-15
FR2152557B1 (en) 1975-03-07
DE2244115A1 (en) 1973-03-15
ES172706U (en) 1972-02-16
JPS5221783B2 (en) 1977-06-13

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414B Case decided by the comptroller ** grants allowed (sect. 14/1949)
49R Reference inserted (sect. 9/1949)
PS Patent sealed [section 19, patents act 1949]
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee