Pull-out test device for lined PVC (polyvinyl chloride) sheet of reinforced concrete drainage pipe

Abstract

The invention provides a pull-out test device for a lined PVC (polyvinyl chloride) sheet of a reinforced concrete drainage pipe. The device comprises a support, a chuck, a lifting hook, a pulling assembly and a tension meter, wherein the pulling assembly comprises a base, a rotary sleeve, a vertical lifting screw rod, a second positioning pin and a plurality of first positioning pins; a through hole penetrating through the upper end surface and the lower end surface is formed in the base; the rotary sleeve is arranged in the through hole of the base in a sleeving manner; the upper part of the rotary sleeve extends out of the through hole; an annular groove is formed in the lower part of the outer wall of the rotary sleeve; a plurality of first positioning holes are formed in the upper part of the side wall of the base; the plurality of first positioning pins penetrate through the first positioning holes respectively to extend into the groove; the lifting screw rod is matched with the rotary sleeve; a guide groove is formed in the side wall of the lifting screw rod; a second positioning hole is formed in the lower part of the side wall of the base; the second positioning pin penetrates through the second positioning hole to extend into the guide groove of the lifting screw rod; the support and the base are fixedly connected; the lower end of the screw rod is fixed with the upper end of the tension meter; and the chuck is fixed at the lower end of the lifting hook. The pull-out test device has the benefits and the technical effects as follows: the structure is simple and the measurement effect is accurate.

Description

technical field [0001] The invention relates to a pull-out test device, in particular to a pull-out test device for testing reinforced concrete drainage pipes lined with PVC sheets. Background technique [0002] Reinforced concrete drainage pipes lined with PVC sheets are generally used in the sewage pipelines of municipal engineering. During the quality inspection of reinforced concrete drainage pipes lined with PVC sheets, it is necessary to draw the reinforced concrete drainage pipes lined with PVC sheets. Test, that is, to test the pull-out strength of the fixed key on the lining PVC sheet. [0003] Corresponding to the above test, a pull-out test device is used, which includes a bracket, a pull rope, a chuck, a pull rod and a weight. The pull rod is hinged on the bracket, and the front end of the pull rod is connected to the chuck through a pull rope. There is a weight, place the bracket in the reinforced concrete drain pipe, cut the PVC sheet attached to the inner wal...

AI Technical Summary

Problems solved by technology

[0004] However, the common pull-out test device has many components, large volume, and inaccurate measurement results.

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