Telescopic Hydraulic Cylinder - China

The telescopic oil cylinder of tunnel construction machinery is the core hydraulic actuator of shield tunneling machines, rock drilling trolleys and other equipment.

It drives the extension and retraction of mechanical arms, shields and other components through hydraulic pressure, accurately controlling the operating range and posture of construction equipment (the extension and retraction stroke can reach 3-8 meters) to meet the needs of tunnel excavation, support and other operations under different geological conditions, ensuring the stability and efficiency of tunnel construction.

Function

The core hydraulic unit that drives the expansion and contraction of key components of tunnel construction machinery, achieving range adjustment and attitude control of operations

Cylinder diameter

φ 80-250 mm

Journey

300-8000 mm

Thrust

200KN-5000KN

Rod diameter

50-180 mm

Work pressure

28-45 MPa

Advantages and Characteristics

Extreme geological adaptability:

Adopting high-strength alloy cylinder and ceramic coating, it can withstand surrounding rock pressure of over 35MPa during tunnel excavation, and its wear resistance is increased by 40% in hard rock and water rich formations;

The sealing system adopts a composite structure of metal bellows and fluororubber, with a temperature resistance of -40 ℃~+120 ℃ and a waterproof rating of IP69K, suitable for humid and mud eroded environments in tunnels.

High precision synchronous control:

Integrated laser displacement sensor and electro-hydraulic servo valve, multi cylinder coordinated expansion and contraction synchronization error ≤ 1.5mm, ensuring millimeter level accuracy for shield machine tail sealing, pipe segment assembly and other operations;

Built in pressure compensation valve, which can maintain stable expansion and contraction speed even under complex geological pressure fluctuations.

Long lifespan and safety redundancy:

The surface of the piston rod is treated with ion nitriding, which improves its wear resistance by three times compared to traditional chrome plating, and has a service life of ≥ 120000 cycles;

Equipped with dual hydraulic control locks and mechanical locking devices, the locking error in case of sudden pressure loss is ≤ 0.8mm to prevent the mechanical arm from falling; The cylinder head is equipped with an over pressure protection valve to avoid the risk of cylinder explosion.

Intelligent monitoring and convenient maintenance:

External integrated pressure temperature displacement three in one sensor, real-time uploading of operational data to the construction management system, early warning of leaks, blockages and other faults;

Modular design reduces the replacement time of key components by 60%, adapting to the 24-hour continuous operation requirements of tunnel construction.

Anti vibration and lightweight design:

Adopting anti vibration hydraulic hose and flexible joint, capable of withstanding 50Hz, 30g acceleration vibration, reducing the impact of equipment operation on the oil cylinder;

Optimize the cylinder structure design, reduce the weight by 20% compared to the same parameter oil cylinder, lower the overall load of the machine, and improve the flexibility of mechanical movement.

Company Contact:

• Posted By: Hubei Jiaheng Technology Co., Ltd.

• Phone: 19907281773

• Address: No.387,Tianma Avenue,Yunyang Economic Development Zone, Shiyan , Hubei , China

• Email:

• Website: https://www.jiahenghydraulic.com/

• Business Description: Established in April 2001 and based in Shiyan, Hubei, HUBEI JIAHENG TECHNOLOGY CO., LTD. is a leading unlisted stock-limited company specializing in R&D, production and manufacturing of various hydraulic cylinders, including special hydraulic cylinders, pump truck cylinders and truck-mounted crane cylinders.
  
  With a plant area of 176,900 square meters and 820 employees (including 82 R&D engineers), it boasts strong comprehensive strength.
  
  A national high-tech enterprise, it leads domestic technology with ISO/TS16949 certification, 47 utility model patents, 1 invention patent, and R&D collaborations with universities and vehicle manufacturers.
  
  It has an annual production capacity of 210,000 hydraulic cylinders, holds over 30% of the domestic market share for years, and has long-term partnerships with over 80 major companies like Zoomlion.
  
  Honored as "National Employment Advanced Enterprise" and "Outstanding Private Enterprise of Hubei Province", it is a well-known and influential hydraulic cylinder manufacturer in the industry.