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Research on Safety System of High Altitude Live Working Vehicle
| Content Provider | Semantic Scholar |
|---|---|
| Author | Du, Yinbo Xiang Wang, Dahong |
| Copyright Year | 2016 |
| Abstract | In order to fully protect the safety of live working personnel, high electric vehicle must implement multiple safety protection. First is the safety of the hydraulic system, not in office under the condition of artificial active operation can realize self-locking; Then the insulation safety, in can't breakdown voltage 10 kv, ensuring the security of the charged homework; Finally take tram pose security itself, take tram must bring Angle sensor and torque sensor. The three important protect build a work charged car security system, comprehensive security charged the personal safety of workers. KEYWORD: hydraulic system; self-locking; insulation safety 4th International Conference on Mechanical Materials and Manufacturing Engineering (MMME 2016) © 2016. The authors Published by Atlantis Press 767 Figure 2-2 folding arm hydraulic schematic Mechanical self-locking in the plunger of the oil cylinder installation nut. When the cylinder is increased to the required position, plunger cylinder nut rotation in the end, the cylinder body and a cylinder contact, so that the piston will is fixed to the required height the. When the need to remove the nut to screw up, so that the plunger back. This oil cylinder has a special name, called the self locking hydraulic cylinder. 2.2 Electrical safety system Power isolation is the use of isolation transformer, the isolation of the control system on the work of the isolation system to ensure that the insulation level. In the first place, the secondary of the isolated transformer is not connected with the earth, and there is no potential difference between any two wire and the earth. People are exposed to any line will not be an electric shock, so it is relatively safe. Secondly, the isolation transformer output with the input is completely "open" isolation, so that the effective input of the transformer (the power supply network supply voltage) played a good filter (Xu Zhenbao, 2007) (Wang Fei, 2009). Thus, the pure supply voltage of the power supply device is provided. Fig. 2-3 isolation transformer In the aspect of safety warning, equipped with low power automatic alarm device, hydraulic high temperature alarm device, the mechanical arm lock alarm device and a supporting leg to reach the set torque alarm device. 2.3 Insulation system Insulation system mainly includes insulation arm and insulation work. As shown in figure 2-4. Fig. 2-4 insulation arm and insulation work The mechanical arm of the high altitude live working vehicle is composed of two sections of a folding arm and a telescopic arm. The insulation arm is the end of the telescopic arm, must be made of insulating material. At the same time, the working platform is above 10m, and the strength and stiffness of the arm must be guaranteed. Insulation is the end of the work of manned platform, safety and material strength is higher. This will be through strict theoretical calculation and material testing and continuous improvement. |
| File Format | PDF HTM / HTML |
| DOI | 10.2991/mmme-16.2016.148 |
| Alternate Webpage(s) | https://download.atlantis-press.com/article/25859897.pdf |
| Alternate Webpage(s) | https://doi.org/10.2991/mmme-16.2016.148 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Notice |
