产品介绍

Product Introduction

1. Characteristics

The NJTT-970 communication tube inner wall static friction coefficient tester is designed and produced by Beijing Naijiu Weiye Technology Co., Ltd. specifically for production, quality supervision, engineering construction, and supervision units to measure the static friction coefficient of communication tube inner wall. The instrument has the characteristics of reasonable structure, simple operation, wide applicability, high measurement accuracy, and safe and reliable measurement. It mainly consists of an adjustable base, angle adjustment mechanism (thread transmission mechanism, bearing support, screw, corrugated wheel, and connecting rod), communication pipe installation base, installation card, fastening joint screw, slope gauge and hanging body, disc nut, communication pipe and standard rod for calibration, etc. 

2. Standard:

GB/T24456-2009, JT/T 683-2009, JT/T496-2018, and YD/T 841-2008.

3. Main technical parameters

Measurement range: 0-45 °

Measurement index value: 2.0 '

Test bar weight: 270g ± 5g

Test bar fineness: 0.20-0.50 μ M

Shore hardness of test bar material: HD59 ± 2

4. Structural composition

The NJTT-970 communication tube inner wall static friction coefficient tester mainly consists of the following parts:

3.1 Base

3.2 Hand wheel and transmission rod

3.3 Worm gear and worm

3.4 Upper base plate

3.5 Angle ruler and auxiliary ruler

3.6 V-shaped clamp and horizontal device fixing clip

3.7 Test Bar and Chain Rope