Improving the load capacity of mechanical jacks to meet the lifting needs of heavier objects involves improvements in multiple technologies and designs. The core task of mechanical jacks is to use the principle of levers and gear mechanisms to convert limited external forces into sufficient lifting force. Therefore, when improving the load capacity, the first thing to focus on is the material strength, structural optimization and operating efficiency of core components.

A key factor is the choice of materials. Traditional mechanical jacks are usually made of steel because of their high strength and durability. However, to improve the load capacity, you can consider using higher-strength alloy steel or composite materials. These materials can provide better compression and deformation resistance while ensuring that the weight does not increase significantly, thereby enhancing the jack's ability to bear weight. In addition, it is also important to consider the fatigue resistance of the material, because the mechanical jack may degrade or fail due to material fatigue during frequent use. Therefore, choosing reinforced materials, especially steel that has undergone heat treatment or surface strengthening processes, can effectively extend the life of the equipment and improve the load-bearing capacity.

Design optimization of mechanical jacks is also crucial. In the process of improving load capacity, optimizing mechanical structure is an effective means. For example, the overall stability and load distribution capacity of the jack can be improved by increasing the base area and the size of the support frame. In terms of structural design, it is possible to consider using a double screw or a multi-stage telescopic mechanism to evenly distribute the load force to multiple fulcrums to avoid excessive stress concentration at a single force point. At the same time, improving the gear transmission system, improving the gear meshing accuracy and transmission efficiency can make the operation smoother, thereby reducing the user's physical exertion while lifting the load.

Another important way to improve load capacity is to improve the transmission ratio of levers and gears. By optimizing the gear transmission ratio, users can still lift heavier objects when applying relatively small external forces. The design of the transmission ratio needs to find a balance between load capacity and operating speed, that is, while lifting weight, ensure that the lifting speed is not too slow. In addition, the use of more efficient ball bearings or sliding bearings can help reduce friction and further improve transmission efficiency.

Increasing the load capacity of mechanical jacks also requires optimization in terms of operational safety. The larger the load, the higher the safety requirements, so more safety designs must be introduced. For example, adding anti-skid devices, anti-overload protection mechanisms, and locking devices to the jack structure can ensure stability and safety under heavy loads. Especially when used in extreme environments, such as high temperature, low temperature or humid environments, the corrosion resistance and fatigue resistance of materials are particularly important. The use of high-durability coatings or plating treatments can effectively increase the service life of the jack.

Finally, the development of automation and intelligence has also provided a new direction for improving the load capacity of mechanical jacks. By integrating electronic sensors and monitoring equipment, real-time monitoring of the load, angle changes and equipment health status of the jack can enable users to receive timely warnings when overloaded or the equipment is abnormal, thereby avoiding accidents. This can not only improve the efficiency of the use of the jack, but also provide higher safety protection for operators.