GB901898A - Improved tensioning device for wires, rods or cables - Google Patents
Improved tensioning device for wires, rods or cablesInfo
- Publication number
- GB901898A GB901898A GB4285359A GB4285359A GB901898A GB 901898 A GB901898 A GB 901898A GB 4285359 A GB4285359 A GB 4285359A GB 4285359 A GB4285359 A GB 4285359A GB 901898 A GB901898 A GB 901898A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wires
- jaws
- cylinder
- cone
- sleeve
- 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
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
901,898. Wire strainers. HOREL, A., and HOREL, J. Dec. 16, 1959 [Dec. 17, 1958], No. 42853/59. Class 45. [Also in Group XXV] A device for tensioning wires 8 used in prestressed concrete, comprises a hydraulic cylinder 1 in which is slidably mounted a piston 2, the cylinder having a head-piece 4 round the periphery of which are spaced wedge-shaped slots 24 within each of which are slidably disposed two wedge-shaped jaws 3 for gripping therebetween a pair of the wires, each jaw 3 having a groove 26 on its gripping surface. The jaws 3 are pressed into the slots 24 by a body 11 which is moved by means of a hydraulic cylinder 9 and the wires 8 are also gripped between a cone 23 and a sleeve 25, the cone being pressed into the sleeve by a hydraulic piston 5 movement of which is under the control of a throttling valve 7. Each groove 26 is preferably defined by two planes, Fig. 4 (not shown), which are at an obtuse angle to one another so that the pair of wires gripped therebetween are presesed against each other; the two planes may be replaced by an arcuate surface. The hydraulic cylinders are supplied with liquid, e.g. oil, from a container 18 by a pump 17, the oil passing through a distributor 19 and a tube 16 to the device; the distributer controls the oil flow by means of a by-pass valve 21 and a pressure relief valve 20. In operation of the device the wires 8 are passed between the cone 23 and the sleeve 25 and are then respectively inserted in pairs between the pairs of jaws 3, the wires being preliminarily secured in position by a lock 10 located on the body 11. Oil is then sequentially fed to the cylinder 9 for clamping the wires to the headpiece 4, to the cylinder 2 for tensioning the wires, the cylinder 2 being under the control of a throttling valve 6, and to the piston 5 for moving the cone 23 towards the sleeve 25. When the device is to be removed from the wires the valve 21 is opened allowing the piston 5, the body 11 and the jaws 3 to be spring-returned to their original position. To facilitate opening of the jaws 3 the gripping surfaces 27 thereof may have a wave formation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS650558 | 1958-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB901898A true GB901898A (en) | 1962-07-25 |
Family
ID=5412243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4285359A Expired GB901898A (en) | 1958-12-17 | 1959-12-16 | Improved tensioning device for wires, rods or cables |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT216199B (en) |
| CH (1) | CH378506A (en) |
| GB (1) | GB901898A (en) |
| NL (1) | NL300509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877322A (en) * | 2019-11-04 | 2020-03-13 | 北京城建设计发展集团股份有限公司 | Automatic screwing device for prestressed reinforced nut matched with hollow jack |
| CN113539624A (en) * | 2021-07-15 | 2021-10-22 | 江苏科技大学 | Ultrahigh-voltage solid-state voltage transformation device for power transmission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE7803640L (en) * | 1978-03-31 | 1979-10-01 | Ludvigson Birger | DEVICE FOR STRETCHING A REINFORCEMENT STRING |
-
1959
- 1959-12-15 AT AT909859A patent/AT216199B/en active
- 1959-12-15 CH CH8188059A patent/CH378506A/en unknown
- 1959-12-16 GB GB4285359A patent/GB901898A/en not_active Expired
-
1963
- 1963-11-14 NL NL300509A patent/NL300509A/xx unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877322A (en) * | 2019-11-04 | 2020-03-13 | 北京城建设计发展集团股份有限公司 | Automatic screwing device for prestressed reinforced nut matched with hollow jack |
| CN110877322B (en) * | 2019-11-04 | 2020-11-24 | 北京城建设计发展集团股份有限公司 | Automatic screwing device for prestressed reinforced nut matched with hollow jack |
| CN113539624A (en) * | 2021-07-15 | 2021-10-22 | 江苏科技大学 | Ultrahigh-voltage solid-state voltage transformation device for power transmission |
| CN113539624B (en) * | 2021-07-15 | 2022-05-17 | 江苏科技大学 | Ultrahigh-voltage solid-state voltage transformation device based on power transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| AT216199B (en) | 1961-07-10 |
| NL300509A (en) | 1965-09-10 |
| CH378506A (en) | 1964-06-15 |
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