SD series steel cable hydraulic lifting equipment includes electrical, hydraulic and control technologies. It is a new type of lifting equipment, which uses hydraulic oil as power to push oil cylinder and piston to move reciprocally, so that the upper gripper and the lower gripper carry out load conversion, so as to realize the vertical lifting (or descending) of heavy objects. The high strength and low relaxation steel strand with nominal diameter of 15.24mm and tensile strength of 1860MPa is selected as loadbearing parts of TSD steel cable type hydraulic lifting equipment. The whole set of equipment needs to be installed and debugged according to the actual situation of the construction site on site before it can be applied in the actual construction.

Working characteristics of TSD hydraulic lifting systemCompared with the conventional hoisting equipment of the same tonnage, the TSD hydraulic lifting system has the advantages of small volume, light weight and small occupation of space, which is especially suitable for the construction occasions where the hoisting equipment cannot enter the narrow space.

The hydraulic system is equipped with overpressure protection, easy to calibrate and operate.

The steel strand for bearing is supplied by reel and can be cut according to the required length at the construction site. The process is simple and the construction is convenient.

The control signal is transmitted by cable, and the console can be placed in a safe place according to the actual situation of the construction site.

The control system can realize lifting, lowering and stopping with load under hoisting conditions, and has four cylinder linkage and single cylinder adjustment functions. Manual operation or automatic operation shall be selected according to the construction requirements.

The control system is equipped with regulated power supply to ensure the reliable operation of the system.

On the electrical control system panel, the power supply, operation process and operation conditions are all displayed with light signals, which is clear and intuitive, which is conducive to the correct operation and command of operators.

The hydraulic jack and hydraulic pump station can lock the hydraulic system in case of emergency (such as sudden power failure and weather change) to ensure the safety of lifting heavy objects and construction.

Features of TSD series lifting jack

● upper and lower grippers

The design is ingenious and the performance is reliable, so as to ensure the safety and smooth of tightening and loosening the anchor in the lifting process, and the stress of each steel strand is even.

Anti retraction device of steel strand

Whether it is lifting or descending, the steel strand is always constrained by the guide pipe, which avoids the phenomenon that the steel strand is twisted and nest in the cylinder.

Solve the hydraulic impact of load drop

Hydraulic control one-way valve and balance valve are used for self-locking safety protection. It can not only self-locking in one direction, but also establish back pressure related to loading direction and moving direction on the oil discharge side, so that the weight can drop at an average speed. It overcomes the vibration hazard caused by the original single hydraulic control one-way valve, and ensures the stable load drop.

Control system

The control system is composed of main control computer, field controller, sensor, communication unit and corresponding data line. Communication unit is used for communication between field controllers. All detection and control signals are transmitted to the main control computer through the communication unit. According to the position signal, pressure signal and height difference signal collected by various sensors, the main control computer determines the action sequence of the oil cylinder and completes the coordination work of the group Jack according to certain control program and algorithm; at the same time, it controls the opening size of the proportional valve to drive the oil cylinder to extend or contract the cylinder at the specified speed, so as to realize the synchronous control of the jack.