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Electric shovel wire inlet circuit control device for electric hydraulic forklift

A technology of incoming line circuit and control device, which is applied in electric hydraulic forklift electric shovel circuit control and medium-voltage electrical control field, which can solve the problems of long-time shutdown of equipment, high purchase price, long purchase cycle, etc., and achieve short purchase cycle, Convenient transportation and high cost performance

Inactive Publication Date: 2016-01-06
YUNNAN HUALIAN ZINC & INDIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of SF6 gas, it cannot be shipped by air, so the procurement cycle is longer (two months), which will cause long-term shutdown of the equipment
Second, the purchase price is relatively high (980,000 yuan)

Method used

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  • Electric shovel wire inlet circuit control device for electric hydraulic forklift
  • Electric shovel wire inlet circuit control device for electric hydraulic forklift

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, the vacuum circuit breaker is fixed on the installation bracket 10 made of high carbon steel, and then the installation bracket 10 is fixed on the bottom plate and the right side side plate of the electro-hydraulic forklift electric shovel S1 cabinet, and the installation bracket 10 The contact surface with the electro-hydraulic forklift is equipped with high-strength elastic rubber pads. The installation bracket is divided into two layers. The vacuum circuit breaker is installed on the upper layer. The left side is an insulating partition 12, and the right side is installed on the side panel of the S1 cabinet. , the safety distance between vacuum circuit breaker 4 and other high-voltage electrical appliances is greater than 25cm; small load isolating switch 1 is connected to the box-type substation 6KV cable incoming line, and the 6KV cable incoming line is connected to 65KVA transformer 2 with high-voltage insulated flexible wires, and 65KVA transformer 2 ...

Embodiment 2

[0018] Embodiment 2: Installation requirements of the mounting bracket 10 described in Embodiment 1: the mounting bracket must be installed close to the side plate, and high-strength elastic rubber pads must be installed at the bolted joints between the side plate and the mounting bracket, and the bottom plate and the mounting bracket , The connecting bolts are steel bolts, the size is Φ20×70mm; and it is installed between the two plates; the shock-absorbing rubber pad is 15cm long×5cm wide×3cm; the rest are the same.

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PUM

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Abstract

The invention provides an electric shovel wire inlet circuit control device for an electric hydraulic forklift, relates to the field of medium voltage electrical equipment control, particularly to the field of electric shovel inlet circuit control of the electric hydraulic forklift. The safe, reliable, and efficient control of the electric hydraulic forklift can be achieved by corresponding upgrading of replacing an SF6 circuit breaker with a vacuum circuit breaker.

Description

technical field [0001] The invention relates to the field of medium-voltage electrical control, in particular to the field of electric-hydraulic forklift electric shovel circuit control. Background technique [0002] 9250 (15m) produced by LIEBHERR company imported from Germany 3 ) and 9350 (18m 3 ) Electric hydraulic forklift is the top large-scale stripping equipment for open-pit mining and stripping mines. It is expensive, and the power line adopts 6KV high-voltage flexible cable. The electric shovel incoming line circuit breaker adopts the SF6 gas insulated circuit breaker produced by Snyder Company, model: L1SE0942417 / 12KV / 630A / AC220 interrupting capacity 25KA, SF6 circuit breaker is characterized by small size and strong arc extinguishing ability, mainly used in fixed unchanging place. However, during the use of the electric shovel, due to the harsh working environment, especially when walking, turning, and shoveling, there will be great vibrations, especially chang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/04
Inventor 曾应舒黄维祥张发贵李正飞
Owner YUNNAN HUALIAN ZINC & INDIUM
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