JB/T 14788-2024 in English

VALID

Continuous extension belt conveyor

Issued on:2024-03-29
Implemented on:2024-10-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $339.00
$329.00

Standard No:	JB/T 14788-2024
Document status:	VALID
Title in English:	Continuous extension belt conveyor
Title in Chinese:	连续延伸带式输送机
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2024-03-29
Implemented on:	2024-10-01
ICS Classification:	53.040.10-Conveyors
Chinese Classification:	J81-Conveying machinery
Professional Classification:	JB-Machinery
Related Keywords:	continuous extension belt conveyors continuous extension storage bin vertical belt storage bin general requirements guide conveyor introduction analysis double-sided hanging type conveyor

Introduction

Analysis of the core content of the standard

JB/T14788-2024 is my country's first special standard for continuous extension belt conveyors for tunnel engineering, focusing on the technical requirements of key components such as conveyor belts and drive devices. The standard innovatively defines special concepts for tunnel construction such as pace change (Article 3.3) and extension stations (Article 3.5).

Comparison of key technical parameters

Parameter category	Horizontal belt storage bin	Vertical belt storage bin	General requirements
Guide rail parallelism error	≤2mm	≤5mm	GB/T10595
Drum shaft parallelism	＜5mm	＜5mm	Article 4.2.3
Safety protection	Protective net	Anti-fall device	Article 5.3.15

Analysis of implementation points

Typical application scenarios

A subway tunnel project uses a double-sided hanging type conveyor (Article 4.1.2), and special attention should be paid to the following:

The adjustment length of the hanging device must meet the installation spacing of the pipe segments (Article 5.3.8.8)
The length of the intermediate frame is designed according to the 6m module (Article 5.3.8.6)
Drive power balance ≥ 95% (Article 5.3.1.2)

Detailed explanation of inspection specifications

The standard innovatively divides the inspection into factory inspection (Article 7.2) and type inspection (Article 7.3):

Key items: conveyor belt centering deviation (Article 5.2.2), drive noise (Article 5.2.5)
New items: extension station lighting (Article 5.3.9.3), communication system (Article 5.3.13)
Roller sampling is based on GB/T2828.1 AQL=10 (Article 7.4)

Technology evolution analysis

Compared with GB/T10595-2017, this standard highlights three major innovations:

Dynamic extension mechanism: installing the fuselage under running state (Article 3.1)
Tunnel adaptation design: segment installation interface (Article 5.3.8.4)
Intelligent monitoring requirements: real-time data transmission (Article 5.3.13.6)

More samples: QC/T 942-2021 JJG 21-2008 GB 18306-2015

Sample only — not a preview of JB/T 14788-2024