SU696134A1 - Apparatus for retaining and gradually slacking the tension of reinforcement members - Google Patents
Apparatus for retaining and gradually slacking the tension of reinforcement membersInfo
- Publication number
- SU696134A1 SU696134A1 SU752133726A SU2133726A SU696134A1 SU 696134 A1 SU696134 A1 SU 696134A1 SU 752133726 A SU752133726 A SU 752133726A SU 2133726 A SU2133726 A SU 2133726A SU 696134 A1 SU696134 A1 SU 696134A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- tension
- slacking
- retaining
- gradually
- reinforcement members
- Prior art date
Links
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
Изобретение относитс к области строительной индустрии и может быть использовано при изготовлении предвари- тельио напр женных железобетонных конструкций с нат жением арматуры на упоры и плавной передачи усили напр гаемой арматуры на бетон издели . Известны устройства дл плавного отпуска напр гаемой арматуры, выполненные в виде клиновых штыревых приспособ лений или контакта оборудовани дл элек тротермического способа отпуска армату- ры 1. , Недостатком таких устройств вл етс их быстрый износ и энергоемкость, Наиболее близким к изобретению техническим решением вл етс устройство дл фиксации и цлавного отпуска нат жени арматуры, содержащее упор, т гу дл воспри ти усилий от напр гаемой арматуры , гайку, сопр женную с посред ством самотормоз щей резьбы и расположенное между упором и г айкой средст .во дл отпуска арматуры 2. Недостатком этого устройства вл етс сложность его конструкции, которое требует больших затрат труда дл приведени этого устройства в рабочее положение. Цель изобретени - упрощение конструкции . Указанна цель достигаетс тем, что средство дл отпуска арматуры выполнено в виде гайки, сопр женной посредством самотормоз щей резьбы, при этом между упором и гайкой установлен упорный подшипник, кроме того, гайки выполнены с резьбой разных направлений. Известно, что самотормоз щие резьбы выполн ютс с углом подъема винтовой линии, меньшим угла трени винта и гайки . Нейамотормоз щую гайку можно выполнить с углом подъема винтовой линии, незначительно превышающим угол трени . При этом гайка с несамотормоз щей резьбой воспринимает основную часть осевой нагрузки, а в резьбовом соединении по витс окружное усилие, большее силыThe invention relates to the field of the construction industry and can be used in the manufacture of prestressed reinforced concrete structures with tension reinforcement on the stops and a smooth transfer of the force of the stressed reinforcement to the concrete product. Known devices for the smooth tempering of tensioned reinforcement, made in the form of wedge-pin devices or equipment contact for the electrothermal method of tempering rebar 1. The disadvantage of such devices is their rapid wear and energy consumption. The closest to the invention is the technical solution for fixing and gland tensioning of reinforcement, containing an abutment, a thrust for receiving forces from tensioned reinforcement, a nut mated with a self-braking thread and located Between the anvil and the hinge means for releasing the armature 2. A disadvantage of this device is the complexity of its design, which requires a lot of effort to bring this device into the working position. The purpose of the invention is to simplify the design. This goal is achieved by the fact that the means for releasing reinforcement is made in the form of a nut, which is conjugated by means of a self-braking thread, while a thrust bearing is installed between the stop and the nut, in addition, the nuts are threaded in different directions. It is known that self-braking threads are made with an elevation angle of the helix smaller than the friction angle of the screw and nut. A lock nut can be made with an elevation angle of the helix slightly exceeding the friction angle. At the same time, the nut with non-braking threads takes the main part of the axial load, and in the threaded joint, the circumferential force is greater than
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752133726A SU696134A1 (en) | 1975-05-11 | 1975-05-11 | Apparatus for retaining and gradually slacking the tension of reinforcement members |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752133726A SU696134A1 (en) | 1975-05-11 | 1975-05-11 | Apparatus for retaining and gradually slacking the tension of reinforcement members |
Publications (1)
Publication Number | Publication Date |
---|---|
SU696134A1 true SU696134A1 (en) | 1979-11-05 |
Family
ID=20619272
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU752133726A SU696134A1 (en) | 1975-05-11 | 1975-05-11 | Apparatus for retaining and gradually slacking the tension of reinforcement members |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU696134A1 (en) |
-
1975
- 1975-05-11 SU SU752133726A patent/SU696134A1/en active
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