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Retardation setting tendon cladding equipment and uses thereof

A technology of prestressed tendons and cladding devices, which is applied in construction, building structure, processing of building materials, etc., can solve the problems of not being able to meet construction requirements well, and achieve the effects of light weight, simple and unique structure, and simple operation.

Inactive Publication Date: 2004-01-14
LANZHOU JIAOTONG UNIV
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  • Summary
  • Abstract
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Problems solved by technology

"Research on the Application of Retarding Materials in Post-tensioned Prestressed Concrete Members" passed the ministerial appraisal in 2001. Retarding prestressing technology has been applied to engineering practice. Winding and wrapping on the prestressed steel bars can not meet the construction requirements very well. To develop an equipment device that can continuously and reliably coat the prestressed steel bars with retarding mortar—the mechanization of construction equipment is retarded mortar and retarded bonding prestressing. The key link for the system to be popularized and applied

Method used

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  • Retardation setting tendon cladding equipment and uses thereof

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Embodiment Construction

[0010] With reference to Fig. 1, present embodiment is made up of traction mechanism 3, retarding mortar propulsion mechanism 4, plastic coating mechanism 16, setting cooling system 11, dragging control system 18, and they are all arranged on a frame. The traction mechanism 3 adopts frequency conversion speed regulation and belt-covered structure. The belt-covered belt compresses and conveys the prestressed steel bar 1, and the hand wheel 2 adjusts the pressing force. This structure has a large traction force and a wide range of speed adjustment. When running at low speed, it has relatively hard mechanical properties to prevent crawling, thus realizing continuous, reliable and smooth conveying of prestressed steel bars, and controlling the cross-sectional size of coated products to make the coating process stable; retarded mortar The propulsion mechanism 4 is composed of a hydraulic motor 19, a hopper 5, a screw 7, a barrel 6, and a straight-through machine head 8. The motor 1...

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Abstract

A wrapping apparatus for coating a layer of slow-setting mortar on the surface of prestressed reinforcing bar and then wrapping it with plastics automatically and continuously is disclosed. The resultant slow-setting prestressed rib can be used in prestressed concrete component. Its advantages are compact layout and unique structure, mechanical, electric and hydraulic integration, and simple operation.

Description

(1) Technical field [0001] The invention relates to a prestressed concrete component construction machine tool, which belongs to a retarded prestressed tendon coating device used in a retarded bonding prestressed concrete system. (2) Technical background [0002] Concrete is good in compression but poor in tension. In order to prevent the concrete from being destroyed when it bears tensile stress, high-strength steel bars are embedded inside, and then pre-tensioning stress is applied to the steel bars to make the concrete bear higher pre-compression stress. In this way, the advantages of high compressive strength of concrete and high tensile strength of steel bars can be fully utilized to jointly resist the action of external forces, avoid concrete cracking and reduce the width of cracks, and improve the bearing capacity of concrete beams and slabs. This is prestressed concrete. technology. [0003] The emergence of prestressed concrete structures has expanded the applicat...

Claims

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Application Information

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IPC IPC(8): E04G21/12
Inventor 张建辉李怀东高廷阳薛德胜
Owner LANZHOU JIAOTONG UNIV
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