Elevator Compensation Chain Structure Features and Advantages

The advantages of elevator balance compensation chains in practical operation include their ability to rise and fall with the elevator's movement, operate with a certain bending radius, and move up and down hundreds to thousands of times a day without aging, being unaffected by temperature, resistant to oil contamination, wear-resistant, low-noise, and having a long service life.

I. Elevator Balance Compensation Chain Structure

1. Rope-through compensation chain, a primitive type of compensation chain, can only be used for elevators with a speed of 1.75m/s or less. The structure involves threading hemp rope through an iron chain. This type of compensation chain generates significant noise due to friction and collision between the chains during operation, and passengers experience a noticeable shaking sensation inside the car. The advantage is its low cost, but most elevator companies have discontinued its use.

2. Plastic-coated compensation chain, to reduce the noise generated by the rope-through compensation chain during operation and to slow down the corrosion of the iron chain by the environment, a layer of PVC tube is wrapped around the rope-through compensation chain, forming a plastic-coated compensation chain. Compared to the rope-through compensation chain, the noise during operation of the plastic-coated compensation chain is greatly reduced, and it is more aesthetically pleasing, but improvements are still needed in terms of flexibility and durability.

3. Fully plastic compensation chain, suitable for high-speed elevators up to 6m/s, with a cable-like PVC structure, the elevator operation can achieve a smooth and quiet effect, favored by many large elevator companies.

II. Important Features of the Compensation Chain Tension Testing Machine:

1. Horizontal frame structure, high rigidity, high stability load frame.

2. Pin-type spatial adjustment structure, high-strength, high-precision positioning pins for quick positioning.

3. Servo control system, automatic, manual, and constant load operation; load holding, stress-strain control, cyclic control, and self-programming control modes.

4. High-precision force transducer, wide linearity, good stability, ensuring the accuracy of load measurement.

5. Uniquely designed placement, positioning, and adjustment mechanism.

6. Dual-control bidirectional hydraulic cylinder for rapid testing and quick return.

7. Multiple protection functions: software and hardware two-level protection; test force overload protection; overcurrent, overpressure protection; hydraulic cylinder limit protection; hydraulic system overload overflow protection; safety protection/protective net when the sample breaks; operation prompt guide protection; automatic protection at the end of the test.

8. Control system:

   8.1: Fully digital closed-loop, multi-channel, multi-function, easy-to-use control software; achieving closed-loop control of test force, sample deformation, piston displacement, and test process, as well as control functions such as constant stress, constant strain, constant test force, constant displacement, test force holding, and displacement holding; test data can be saved, queried, and called up at any time.

   8.2: Automatic control of the test process, real-time control, data acquisition, processing, analysis, display, and storage of test force, peak value, deformation, displacement, and test curve; full keyboard input operation and control mode intelligent setting system; arbitrary setting of control mode, impact-free, smooth switching, smooth loading and unloading.

   8.3: The process can be reproduced, data re-analyzed, curves magnified, compared, and traversed, with automatic adjustment of coordinate full scale.

   8.4: Control software, modular, open-style programming, meeting personalized requirements. Features tips and guide functions.