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Portable dolly for replacing current transformer, and manufacture method thereof

A current transformer and portable technology, which is applied to electrical components, lifting devices, switch devices, etc., can solve the problems of lowering the working efficiency of replacing current transformers, inconvenient installation and handling, and difficult to fix firmly, so as to achieve the safety of transformers. Reliability, shortened replacement time, and reduced labor intensity

Inactive Publication Date: 2014-10-22
STATE GRID SHANDONG ELECTRIC POWER CO QINGZHOU POWER SUPPLY CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, because the current transformer itself is relatively heavy, about 30-50kg, the 40kg current transformer should be lifted to the installation position at a height of half a meter by squatting on the ground, and there is no holding point. It is also difficult for adults
In addition, using ropes to fix the current transformer is not easy to use force, and it is difficult to fix it firmly; the transformer needs to be crossed back and forth when entering and exiting, which is time-consuming and laborious, which will be very inconvenient to install and carry, which greatly reduces the cost of replacing the current transformer. work efficiency

Method used

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  • Portable dolly for replacing current transformer, and manufacture method thereof
  • Portable dolly for replacing current transformer, and manufacture method thereof
  • Portable dolly for replacing current transformer, and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: as figure 1 As shown, the portable trolley for replacing a current transformer includes two vehicle frames 1 hinged to each other, and a guide rail 7 is provided on the vehicle frame 1, and a lifting device is slidably connected to the guide rail 7 .

[0049] The vehicle frame 1 includes two No. 4 angle steels, the middle part is connected by three reinforcing ribs 14, and the outer ends are connected by steel pipes. Certainly, vehicle frame 1 also can be other shapes such as concave shape, I-shape.

[0050] See Table 2 for guide rail 7 options:

[0051] Choice of rails

[0052]

[0053] It can be seen from the above table that the technical effect of scheme 2 is the best, and it can bear the weight of the lifting device without deformation; and the current transformer moves flexibly on the guide rail 7 during transportation, and there is no jamming phenomenon during the forward process.

[0054] Such as figure 2 As shown, several supports 2 are p...

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Abstract

The invention discloses a portable dolly for replacing a current transformer, and a manufacture method thereof. The portable dolly is characterized by comprising two mutually articulated dolly frames. The dolly frames are provided with a guide rail. The guide rail is in sliding connection with an elevating device. The economic benefits are increased, the labor intensity of work personnel is reduced, and the safety of an operation process of replacing the current transformer is improved.

Description

technical field [0001] The invention relates to a replacement and transportation device for a power distribution system, in particular to a portable trolley for replacing a current transformer in a switch cabinet and a manufacturing method thereof. Background technique [0002] In recent years, with the sharp increase of social electricity load, the transformation ratio and capacity of current transformers cannot meet the electricity demand of users, and need to be replaced in time. [0003] Taking the current transformer in the 35kV (JYN-35 type) switch cabinet as an example, the general operation time is about 15 years. With the aging of the equipment, the insulation level decreases, which seriously threatens the safe operation of the power grid and needs to be replaced in time. The general workflow for replacing a 35kV (JYN-35 type) current transformer is: first remove the rear cabinet door-remove the secondary wiring-remove the current transformer hereinafter referred to...

Claims

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Application Information

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IPC IPC(8): H02B3/00B66F3/24
Inventor 刘全段继来王环张跃勇李红磊孔令京崔建同李长德
Owner STATE GRID SHANDONG ELECTRIC POWER CO QINGZHOU POWER SUPPLY CO
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