Hydraulic installation of a step lift with a carrying capacity of 800 tons
This installation is designed to lift the load at a significant height with a limited value of the construction height of the hydraulic cylinder
Works on the lifting-lowering of the capacitor during the repair of the third unit of the NNEGC "Energoatom" of the Zaporizhzhya NPP.
The installation includes:
 
 
1. Jack step-lifting DST100G150 (Jack with hydraulic return of the piston, effort 100 tc, piston stroke 150 mm) - 8 pcs
 
 
Picture 1 - Hydraulic Jack DST75G200
 

Hydraulic Jack

Stroke,mm

Heightmm

Weight of the jack, kg

Weight of support partkg

Size of support partmm

The size of the base five on the stemmm

DST75G200

150

340

55

90

500х500

200х200

 

Main technical features:

 

• Jacks are equipped with hydraulic locks that prevent lowering of cargo during an emergency impulse of the sleeve;

• Sealing and supporting elements of the original design;
 
• Hydraulic return of the piston to its original position;
 
• Operating temperature: from -15 ° С to + 50 ° С.
 
• The presence of a spherical support surface, which reduces the off-center load on the jack.

 

• As substrates, bars made of hornbeam (or beech) in sizes of 500x140x40mm (lateral) and 500x140x40mm (central) are used.
 

 

2. Oil-filling station NE70830-8GRО-З (with working pressure of 70 MPa, the cost of 1 jack 1l / min and the possibility of working with 4 jacks simultaneously) - 1 pc.

 

 

Each jack is attached to an individual pump, which allows lifting the load simultaneously (regardless of the load on each of the jacks). Each line is equipped with a throttle to regulate the lifting speed of the jack and a control valve, which allows you to set the maximum working pressure for each line. Also in each of the lines a pressure gauge is installed.
 
The jacks are controlled by a 3-position manually operated distributor (4 pcs).
 
The oil station is equipped with four pairs of high pressure hoses (700 bar), 10 m long, complete with quick couplings.
 
 
 
Basic technical characteristics of the oil station:
 

Maximum pressure, bar

700

Innings, l/min

4 (4/1L auto)

Power, KW

5,5

Network Voltage, V

380

Capacity of the tank, L

30

Overall dimensions, ВхLхН

450х640х1600

Weight,kg

100

 

 

 

To get acquainted with the work of the installation of a step lift, you can from the video below: