In lifting platform carrying the workpiece rises, the need to provide the driving force of the hydraulic cylinder, hydraulic cylinder that output energy to the table; in the table carrying the workpiece fall where roller hydraulic repair, its potential will be released. If this potential is not effectively utilized, will result in a waste of energy. This energy waste for a small table, it is not obvious serious, but for the larger table, it is very pity. Therefore, the table rollers for larger hydraulic repair factory, the roller must be added to the energy storage device in which a hydraulic service hydraulic system, when the platform is lowered to the potential energy stored in order to re-release the rising out in the table, the energy of a more rational use of roller hydraulic repair Which is good, and at the same time to protect the system security. A workpiece (not shown) is placed on the table 1, and table 1 can be raised or lowered under the action of the master cylinder piston rod 3. The auxiliary cylinder piston rod 4 is added with the counterweight 2, two rodless cylinder chamber by a conduit associated, the connection line is equipped with two oppositely disposed pilot operated check valve 5,6, two pilot single the valve control circuit 5,6 respectively from the two cylinder rod chamber. Thus, the two-cylinder reverse series. Where roller hydraulic repair, hydraulic repair roller Hanzhong, Xi'an, Xi'an Chengtong hydraulic repair Chengtong hydraulic repair Limited. Xi'an Chengtong Hydraulic Maintenance Co. (www.huosu360.com) strong, credible, in Xi'an, industrial maintenance, installation and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the Xi'an-hydraulic service and you work through into the brilliant, for a better future!