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GIS is a new type of substation equipment introduced into power grid construction which combines many components into one device. It is a typical representative of heavy equipment, but it requires higher stability during transportation and installation than others. The indoor space of GIS room is limited, and the ground condition is complex, so it is impossible to use large hoisting and transportation machines and tools. For the installation and transportation of GIS, the traditional manual handling is often inefficient and dangerous, and the traditional indoor crane can not meet the requirements of GIS. Therefore, the research and development of indoor crane for GIS is needed, so this paper presents a new indoor crane for GIS on the basis of fully considering these requirements.

The telescopic boom with single cylinder and pinning system is an important structure of the gantry crane. In order to avoid the serious consequences of resonance and the optimal design of the telescopic boom with single cylinder and pinning system, the three-dimensional modeling and finite element analysis of the telescopic boom were carried out using SolidWorks and ANSYS Workbench, respectively. The static analysis results, buckling analysis results and modal analysis results of the telescopic boom are obtained, which provides a reference for the design of this type of telescopic boom.

As many enterprises and factories rely on indoor heavy equipment to complete production work, due to the limited indoor working space during the transportation and installation of this heavy equipment, it is more difficult to use traditional lifting devices or large lifting devices due to their large size. It is difficult to enter the room to complete the corresponding work, and each time it is necessary to build and dismantle the lifting device according to the site conditions, resulting in difficult construction, low efficiency, poor versatility, and other problems. Therefore, a new type of indoor installation transportation device is urgently needed to solve this problem. Using innovative design methods to design a new type of installation transportation device is an important method to solve the above problems. Given the current problems of indoor installation transportation devices and the user requirements of such devices, this paper is based on a variety of innovative design theories such as QFD, AD, and TRIZ to research, establish a device innovation design process model, and design a new type of indoor installation and transportation device based on the model, taking GIS indoor heavy equipment as an example, and verify the effectiveness of the device.

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