Quality appraisal of engineering drilling rigs

engineering drilling rig is a kind of equipment specially used for drilling. It can break the rock and soil and other materials by rotating the drill bit or continuously jacking to carry out drilling operations. Drilling rigs are widely used in mining, construction, geological exploration and other fields.
engineering drilling rig is composed of host machine, drilling tools, electric motor, transmission system, feeding system, cooling system, operating system and other parts. The main machine is composed of base plate, bracket, column, etc. The drilling tools include drill bits, drill pipes, drilling tool sheaths and other parts.
Zhongke Testing and Appraisal Institute can provide engineering drilling rig quality appraisal services and make accurate appraisals in terms of product design analysis, load analysis and product quality analysis.

can be divided into mast-type engineering drilling rigs, mobile engineering drilling rigs, fully hydraulic engineering drilling rigs and other types according to their working capabilities and models.

JB/T 13706-2019 Construction machinery and equipment Forward and reverse circulation engineering drilling rig
MT/T 356-2005 Coal mine underground safety engineering drilling rig
DZ/T 0176-1997 Rotary engineering drilling rig

An Industrial Products Sales Contract between a company in Zhaoqing and a drilling equipment company in Wuxi stipulates that a company in Zhaoqing will purchase a multi-functional crawler engineering drilling rig and random accessories from a drilling equipment company in Wuxi. On the day of receipt, accidents such as a broken faucet, damaged diesel engine starting relay, and failure to disassemble the drill pipe caused debugging to be stopped immediately. Later, due to disagreements, a company in Zhaoqing went to court.
Our company was entrusted by the court to undertake the quality analysis of the "engineering drilling rig" involved in this case.
identification and analysis results: The
quality analysis expert group discussed and comprehensively analyzed the relevant information, on-site investigation and inspection data, and inspection and testing data of the "engineering drilling rig" involved in the case, and made the following quality analysis opinions:
1, the equipment can realize the drilling construction of engineering drilling, and the equipment load operation is basically normal.
2, the main configuration selection of the equipment, the power machine, the power head and other core components are in line with the relevant provisions of the "Industrial Products Sales Contract" and its Annex 1 Agreement, that is, they are in compliance with the contract between the two parties; however, there are some defects in the design, and 4 technical parameters do not comply with the provisions of the contract between the parties.
3, there are some defects in the design and manufacturing of the equipment. The matching parts between the drilling rig's power head carriage and the mast's guide rail are not sealed, causing the guide rail to wear and reduce the service life of the guide rail. It will also increase resistance and block the movement of the carriage, causing the chain connection part (U-shaped tie rod) that pulls the carriage to overload and break.
4. There is micro-leakage in the hydraulic system of the equipment, which will have a certain impact on some construction projects that require mast cantilevers for drilling.
5. In some anchor drilling construction, the clamping shackle cannot be used, and manual installation and disassembly are used, which increases the labor intensity of workers and is prone to danger.