Application of Tensile machine in mechanical inspection of electrical safety tools

Regarding the introduction of the application and operation of the mechanical Tensile Testing Machine for electric safety appliances, at present, power supply enterprises are in the period of reform, and the mechanical performance test of power supply full-scale appliances plays a very important role and influence in enhancing the performance test efficiency of safety electrical appliance mechanics. This paper mainly analyzes and studies the advantages and disadvantages of some Tensile Testing Machines for electrical safety tools in the market today, and summarizes the market demand for new Tensile Testing Machines for electrical safety tools.

1 Electrical safety tools

In recent years, casualties and equipment accidents have occurred frequently in the industry due to problems with safety tools.

In the production and maintenance process of the electric power industry, different types of work and professions need to use electric safety tools during maintenance and maintenance. Electric safety equipment is divided into two types: general protective safety equipment and insulation safety equipment.

Insulation safety equipment is divided into basic insulation safety equipment and auxiliary insulation safety equipment. Basic insulation safety tools refer to tools that can directly operate live equipment or contact or may touch live bodies, such as capacitive electroscopes, insulating rods, nuclear phase Detectors, insulating covers, insulating partitions, etc. The difference between operating tools is that they are short-term contact with electrified bodies or non-contact electrified bodies during work. Auxiliary insulation safety equipment means that the insulation strength does not withstand the working voltage of the equipment or line, but is used to strengthen the security function of the basic insulation safety equipment to prevent contact voltage, step voltage, and leakage current arc from harming the operator. Use auxiliary insulation safety tools to directly contact live parts of high-voltage equipment. Safety tools belonging to this category include: insulating gloves, insulating boots, insulating rubber pads, etc.

2. Problems in the management of safety tools

It is more common that untested or over-period safety appliances are still in use. There are problems in the selection and procurement of safety tools. When selecting and purchasing, the specifications and types of the selected safety tools are unreasonable, which may cause danger when used [9]. The "Electrical Industry Safety Work Regulations" also stipulates that climbing and hoisting tools need to be inspected once a month, and each unit has two types of tools. .

Insulation safety equipment is divided into basic insulation safety equipment and auxiliary insulation safety equipment. The work of basic insulation safety tools is mostly a formality, and the mechanical performance test of safety tools has not really been paid attention to.

From the above, it can be seen that how to make power supply enterprises pay enough attention to the tensile performance test of safety tools is a severe challenge. However, we can solve the test and management of safety tools through existing technologies and policies, so that the work can be done in the first place. Online employees minimize operational risks as much as possible.

3 Mechanical Properties Tensile Testing Machine

The mechanical performance testing machine of electric safety equipment is composed of three parts: hydraulic loading system, safety helmet test bench and microcomputer measurement and control system. In recent years, due to the increasing demand for tensile Testers, along with the emergence and development of new technologies, the operation of mechanical performance testing machines for safety tools has become easier, the functions are more complete, and the measurement accuracy has also been greatly improved. A machine with multiple functions. Most of the Tensile Testing Machines currently in use use a hydraulic system, and the test product is tested by controlling the simultaneous lifting of two hydraulic cylinders. The tension and pressure testing machine can dynamically display the tension and pressure force curves of electric tools, can switch manual/automatic, and has hydraulic overload and process protection functions, and can dynamically track the out-of-control trend in the whole range. At the same time, it has a pressure-holding function that can be set arbitrarily. In the pressure-holding section, when the force value of the workpiece drops, the force compensation is performed automatically. The computer can automatically load, hold and unload according to the set force value and pressure-holding time.

The tensile test can also automatically generate a certificate of conformity to the "Regulations". Its functions seem to be very comprehensive, but the disadvantage of this device is that it is relatively bulky, and its weight of 800 kg limits its portability. At the same time, it occupies a large area and the effective opening distance is limited. Unless the height of the device is increased, tests with large opening distances cannot be carried out in many cases. It is difficult to ensure the synchronization accuracy of this two-cylinder simultaneous lifting device, which causes the uncertainty of the test and thus destroys the test product. Regardless of volume, weight, or control, this double-arm mechanical Tensile Testing Machine has presented more and more application problems.

4 Conclusion

Electric safety equipment is the basic equipment guarantee for the normal work of electric workers. The tool Tensile Testing Machine occupies an important influence, and its quality directly affects the work safety of electric power employees. For units with limited space or high-rise mechanical laboratories, the traditional double-arm mechanical Tensile Testing Machine cannot meet the requirements of some tests, and it is basically impractical in terms of resource utilization. The application of the mechanical Tensile Testing Machine with small size, light weight and flexible application is bound to become the mainstream of production in the future.