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  First, the role of the compensation chain 1. Balance weight: The compensation chain is used to balance the weight of the elevator car and the weight of the weight, reduce the load of the traction machine, and improve the operation efficiency of the elevator. 2. Reduce energy consumption: Through the balancing effect, the compensation chain helps to reduce energy consumption during the operation of the elevator. 3. Improve comfort: The compensation chain helps reduce vibration and noise during elevator operation, enhancing the passenger experience. Second, the type and choice of compensation chain 1. Metal compensation chain: Made of metal material, with high strength and durability, suitable for most elevator systems. 2. Polyurethane compensation chain: with good elasticity and wear resistance, suitable for occasions with high noise and vibration requirements. 3. Selection points: Select the appropriate compensation chain type and specification according to the load, running speed and use environment of the elevator. 3. Preparation before installation of compensation chain 1. Check the compensation chain: ensure that the compensation chain has no damage, no rust, and the chain link is flexible. 2. Confirm the installation position: According to the elevator design drawings, confirm the installation position and length of the compensation chain. 3. Tools: Prepare required installation tools, such as wrenches and screwdrivers.

In modern life, when faced with towering skyscrapers, we have become inseparable from our reliance on elevators. Living and working in skyscrapers that reach dozens of stories high, the absence of elevators seems as inconceivable as the satirical animations from the childhood of many young people. However, with the increasing number of floors in the use of elevators, the safety of elevator usage has become increasingly important. Among the safety features for elevator installations, the elevator balance compensation chain plays a very important role. The structure of the elevator balance compensation chain generally includes iron chains, rubber columns, and fiber layers, with the iron chains placed inside the rubber columns, and the rubber columns wrapped with fiber layers. Its characteristic lies in: it includes iron chains, rubber columns, and fiber layers, with the iron chains placed inside the rubber columns, and the rubber columns wrapped with fiber layers. During the operation of the elevator, the lengths of the steel wires on the car side and the counterweight side will continuously change, causing the weight of the steel wires on both sides of the traction wheel to change accordingly. When the elevator car is at the lowest floor, most of the weight of the steel wires acts on the car side. When the car is at the highest floor, most of the weight of the steel wires acts on the counterweight side. Such changes have little impact on the performance during the ascent, but when the ascent exceeds a certain horizontal height, it begins to seriously affect the stability of the elevator's operation, affecting the safety of passengers. Therefore, when the height of the floors used by the elevator reaches a certain height, it is necessary to add an elevator balance compensation chain to the elevator system. Nantong Sanzhong Electrical and Mechanical Equipment Manufacturing Co., Ltd., established on March 31, 2009, is located in Hai'an Industrial Park, covering an area of 9,600 square meters with assets of 80 million yuan. It is a comprehensive enterprise integrating development, production, trade, and service. The company is adjacent to the 204 National Highway, 328 Provincial Highway, Coastal Expressway, Yancheng-Nantong Expressway, Xinchang Railway, and Ningqi Railway, which crisscross the transportation channels. It is close to Shanghai Port, Nantong Port, Ninghu Expressway, and Ningtong Expressway, with a superior geographical location and very convenient transportation. Since its establishment, through the continuous exploration, innovation, and honest management of all employees, the company has developed into a production enterprise integrating the production and processing of elevator lifting chains, balance chains, anti-slip chains, iron chains, stainless steel chains, plastic-coated processing, various pipe material production and processing, mechanical processing, manufacturing of elevators, escalators, and lifting machines, and processing of other general mechanical parts. It also operates the import and export business of pipes and chains, with products exported to dozens of countries and regions such as the United States, the United Kingdom, Canada, Japan, South Korea, Yemen, Kuwait, Saudi Arabia, the United Arab Emirates, India, Nigeria, etc., and is highly praised by customers.

Elevator Compensation Chain Routine Maintenance and Care: The traction wheel groove and traction steel wire rope should be clean, free of severe grease, and have uniform tension. The governor wheel groove and governor steel wire rope should be clean, free of severe grease. The drive steel wire rope in the car door system should be cleaned and adjusted according to the manufacturer's requirements. The wear of the traction wheel groove should not exceed the requirements of the manufacturer. The wear and number of broken wires in the traction steel wire rope and compensation steel wire rope should not exceed the requirements. The traction steel wire rope head assembly should have no loosening of nuts. The wear and number of broken wires in the governor steel wire rope should not exceed the requirements of the manufacturer. (I) The suspension steel wire rope and compensation steel wire rope should be scrapped if any of the following occur: Cage-like distortion, core extrusion, twisting, partial flattening, or bending occurs. Broken wires are distributed throughout the entire steel wire rope, with more than 4 broken wires in any single strand within one lay; or broken wires are concentrated in a certain part or strand of the steel wire rope, with a total number of broken wires exceeding 12 within one lay (for a 6-strand steel wire rope) or more than 16 (for an 8-strand steel wire rope). The diameter of the worn steel wire rope is less than 90% of the nominal diameter of the steel wire rope. For other types of suspension devices, the wear and deformation should not exceed the scrap indicators set by the manufacturer. The steel wire rope shows severe rust. (II) The rope head assembly should be judged as scrap if any of the following conditions occur and are irreparable: Cracks appear in the cone sleeve or rod. Cracks or open welding occur in the wedge-type rope head. The self-locking wedge-type rope set cannot lock the steel wire rope, and the steel wire rope slips within the wedge sleeve. The threads of the rope head screw and nut are damaged, and the nut cannot be tightened.

Elevator balance compensation chains are common and indispensable elevator balance compensation accessories. There are several types of compensation chains available on the market: The first type is the wire rope elevator compensation chain, which is the most primitive type of compensation chain and is only suitable for elevators with a running speed of up to 175 meters per second. This type of balance compensation chain simply involves inserting hemp rope into the iron chain. Due to friction and collision between chains during operation, it tends to produce a lot of noise, and passengers inside the elevator car can feel noticeable vibrations. Most elevator companies have discontinued its use, with the only advantage being its low cost. The second type is the plastic-coated elevator balance compensation chain. To reduce the noise generated by the wire rope compensation chain during operation and to mitigate the corrosion caused by the environment to the iron chain, a layer of PVC tube is wrapped around the wire rope elevator compensation chain, resulting in the plastic-coated compensation chain. Compared to the wire rope compensation chain, the plastic-coated compensation chain significantly reduces noise during operation and is more aesthetically pleasing. The only drawback is that its flexibility and durability still need improvement. The last type is the all-plastic elevator balance compensation chain, which can be used for high-speed elevators with a running speed of up to 6 meters per second. It has a cable-like PVC structure, and when used, it ensures smooth and quiet elevator operation, making it popular among many large elevator companies.

Elevator Compensation Chain Daily Maintenance and Care: The traction sheave groove and traction steel wire rope should be clean, free of severe grease, and evenly tensioned. The speed limiter groove and speed limiter steel wire rope should be clean, free of severe grease. The transmission steel wire rope in the car door system should be cleaned and adjusted according to the manufacturer's requirements. The wear of the traction sheave groove should not exceed the requirements of the manufacturer. The wear and number of broken wires of the traction steel wire rope and compensation steel wire rope should not exceed the requirements. The traction steel wire rope head assembly nuts should be tightened and not loose. The wear and number of broken wires of the speed limiter steel wire rope should not exceed the requirements of the manufacturer. (I) The suspension steel wire rope and compensation steel wire rope should be scrapped if any of the following occur: Cage-like distortion, core extrusion, twisting, partial flattening, or bending appears. Broken wires are scattered throughout the steel wire rope, with more than 4 broken wires in any single strand within a lay length; or broken wires are concentrated in a part or strand of the steel wire rope, with a total number of broken wires greater than 12 within a lay length (for a 6-strand wire rope) or greater than 16 (for an 8-strand wire rope). The diameter of the worn steel wire rope is less than 90% of the nominal diameter of the steel wire rope. For other types of suspension devices, the wear and deformation should not exceed the scrapping indicators set by the manufacturer. The steel wire rope shows severe rust. (II) The rope head assembly should be judged as scrapped if any of the following situations occur and are irreparable: The cone sleeve or rod appears cracked. The wedge-type rope head appears cracked or welded open. The self-locking wedge-type rope set cannot tighten the steel wire rope, and the steel wire rope slips within the wedge set. The threads of the rope head screw and nut are damaged, and the nut cannot be tightened.

Elevator balance compensation chains are composed of electric welding anchor chains and metal wires, with the metal wires woven around the electric welding anchor chains. The advantages of elevator balance compensation chains in practical operation include their ability to rise and fall with the elevator's movement and operate with a certain bending radius, moving up and down hundreds to thousands of times a day. These chains do not age, are unaffected by temperature, resistant to oil contamination, wear-resistant, damage-resistant, low-noise, and have a long service life. I. Elevator Balance Compensation Chain Structure Key Points to Understand When Selecting Elevator Balance Compensation Chains What structures do balance compensation chains have, and how should they be selected? There are several types of compensation chains on the market: 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. 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. 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. After determining the type of balance compensation chain, the number of compensation chains and the installation method must also be considered. Generally, first, determine the weight of the compensation chain by subtracting the weight of the traveling cable from the weight of the traction rope, then determine the weight per meter of the compensation chain, and finally select from the manufacturer's range of compensation chains. Professional compensation chain manufacturers usually have flexible weight selection schemes. There is an allowable error range in the calculation of the weight per meter of the compensation chain. Within the error range, there are two options: either to use two compensation chains with a lighter weight per meter or one compensation chain with a heavier weight per meter. This mainly depends on the layout of the buffers in the elevator system. If there is one buffer under the car and one under the counterweight, or two buffers under the car and one under the counterweight, then using two compensation chains is more appropriate; if there are two buffers under both the car and the counterweight, then one compensation chain should be used.

Elevator balance compensation chains are composed of electric welding anchor chains and metal wires, with the metal wires woven around the electric welding anchor chains. 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 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. 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. 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: Horizontal frame structure, high rigidity, high stability load frame. Pin-type spatial adjustment structure, high-strength, high-precision positioning pins for quick positioning. Servo control system, automatic, manual, and constant load operation; load holding, stress-strain control, cyclic control, and self-programming control modes. High-precision force transducer, wide linearity, good stability, ensuring the accuracy of load measurement. Uniquely designed placement, positioning, and adjustment mechanism. Dual-control bidirectional hydraulic cylinder for rapid testing and quick return. 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. 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.

During the operation of an elevator, the lengths of the steel wire ropes on the car side and the counterweight side are constantly changing, which leads to changes in the weight of the steel wire ropes on both sides of the traction sheave. When the car is at the lowest floor station, most of the weight of the steel wire rope acts on the car side; when the car is at the highest floor station, most of the weight of the steel wire rope acts on the counterweight side. This variation has little impact on the elevator's performance when the lifting height is not significant, but when the lifting height exceeds a certain level, it can severely affect the stability of the elevator's operation and endanger passenger safety. Therefore, when the lifting height of the elevator exceeds a certain height, it is necessary to set up a component with a certain weight to balance the weight changes caused by height variations. This is the elevator balance compensation chain. Thus, the elevator balance compensation chain is defined as: a component used to connect the elevator car and counterweight, balance the weight of the traction rope and the traveling cable, and play a balancing role in the operation of the elevator. There are several types of compensation chains on the market: Rope-through compensation chain, which is 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. 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. 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. After determining the type of balance compensation chain, the number of compensation chains and the installation method must also be considered. Generally, first, determine the weight of the compensation chain by subtracting the weight of the traveling cable from the weight of the traction rope, then determine the weight per meter of the compensation chain, and finally select from the manufacturer's range of compensation chains. Professional compensation chain manufacturers usually have flexible weight selection schemes. There is an allowable error range in the calculation of the weight per meter of the compensation chain. Within the error range, there are two options: either to use two compensation chains with a lighter weight per meter or one compensation chain with a heavier weight per meter. This mainly depends on the layout of the buffers in the elevator system. If there is one buffer under the car and one under the counterweight, or two buffers under the car and one under the counterweight, then using two compensation chains is more appropriate; if there are two buffers under both the car and the counterweight, then one compensation chain should be used. The installation of elevator compensation chains varies due to different structural types of compensation chains. Ordinary compensation chains, i.e., rope-through compensation chains and plastic-coated compensation chains, have a simpler structure and are mostly used for low-height, low-speed elevators, so the installation method is also simpler. The ends of the compensation chain are connected to the car bottom frame and the counterweight with suspension devices, and a guide device composed of two polyvinyl chloride wheels is set up at the bottom of the pit under the counterweight. For fully plastic compensation chains, which are often used in high-rise, high-speed elevators, the installation is more complex. The ends of the compensation chain are connected to the car bottom frame and the counterweight with suspension devices. A guide device is set up in the pit, installed about 1 meter above the compensation chain's bending radius at the bottom of the pit. There are two guide devices under each compensation chain, one installed on the car side via a bracket and the other on the counterweight side via a bracket. Generally, compensation chain manufacturers will have matching installation accessories and tools. Only by using the correct installation tools and methods can the compensation chain operate normally with the elevator.

The elevator compensation chain is a component used to connect the elevator car and counterweight, balancing the weight of the traction rope and the traveling cable, playing a balancing role in the operation of the elevator. When the elevator is in operation, the length of the steel wire rope on the car side and the counterweight side is constantly changing, which leads to a change in the weight of the steel wire rope on both sides of the traction sheave. When the elevator lifting height is not significant, this weight change has a minor impact on the performance. However, when the lifting height exceeds a certain level, it can severely affect the stability of the elevator's operation, endangering passenger safety. At this point, it is necessary to install an elevator balance compensation chain with a certain weight to balance the weight difference caused by height changes. There are several common types of compensation chains available on the market: Wrapped Fiber Compensation Chain: Can be used up to a speed of 4m/s, suitable for various cold and harsh environments, it is currently a high-performance compensation chain, but the price is relatively high. Fully Plastic Compensation Chain: With a cable-like PVC structure, it can be used up to a speed of 3m/s, and the elevator operation can achieve a smooth and quiet effect, which is favored by many large elevator companies. Plastic-Coated Compensation Chain: With a flat PVC structure, it can be used up to a speed of 2m/s, its performance is slightly inferior to the fully plastic compensation chain but superior to the rope-through compensation chain, and the price is relatively cheaper. Rope-Through Compensation Chain: The structure is a hemp rope threaded through an iron chain, usually only suitable for speeds below 1m/s. The elevator operation is noisy, and there is a noticeable shaking sensation inside the car. This is the most primitive type of compensation chain, and most elevator companies have now switched to using the above three types of compensation chains instead. When using elevator compensation chains, the following points should be noted: Choose the appropriate type of compensation chain: Based on the elevator's operating speed, lifting height, usage environment, and other factors, select the appropriate type of compensation chain to ensure it can function properly and meet the smoothness and safety requirements of the elevator operation. Ensure the quality of the compensation chain: A high-quality compensation chain can make the elevator operation safe and smooth, achieving a quiet and comfortable effect. Poor-quality compensation chains may have issues such as severe shaking during operation, causing car swaying and loud noise, short service life, poor flexibility, easy cracking of the outer layer, poor strength, and instability leading to chain breakage accidents. When purchasing compensation chains, choose products that meet standards and are reliable in quality. Correctly install the compensation chain: The installation of the compensation chain is usually carried out during the elevator commissioning. One end is hung under the car, and the other end is attached to the lower part of the counterweight. This compensation method is called symmetrical compensation, which has the advantage of not requiring additional counterweight or increasing the space in the hoistway. When installing, attention should be paid to the appropriate length of the compensation chain, neither too long nor too short, and ensure that its ends are securely fixed. Regular inspection and maintenance: The compensation chain may experience wear, deformation, and chain breakage during long-term use, so regular inspection is necessary. The inspection includes checking for any damage, twisting, or breaks in the appearance of the compensation chain; whether the connection parts are firm; and whether there are any abnormal noises or vibrations during operation. If any issues are found, timely maintenance or replacement should be carried out. Pay attention to environmental factors: Avoid the compensation chain coming into contact with water, oil, and other substances to prevent accelerated corrosion and aging. At the same time, ensure the cleanliness of the elevator hoistway to prevent debris from entangling or scraping the compensation chain. Follow relevant standards and regulations: Strictly adhere to national and industry standards and regulations, as well as the requirements of the elevator manufacturer, in the selection, installation, and maintenance of the compensation chain. Secondary protection for the compensation chain: Set up secondary protection devices for the compensation chain according to the requirements of the elevator manufacturer to prevent more serious accidents in case of abnormal situations (such as detachment). In summary, correctly selecting, installing, and maintaining the elevator compensation chain is crucial for ensuring the safety and smooth operation of the elevator. By paying attention to the above usage precautions, the operation quality of the elevator can be improved, the service life of the compensation chain can be extended, and the safety and comfort of passengers can be ensured. At the same time, it is recommended that professional elevator maintenance personnel carry out regular inspections and maintenance work.