The relationship between the lifting speed and operating force of a manual lift table is an important design consideration, involving aspects such as mechanical efficiency, ergonomics, and usage scenarios. Below are some methods to balance these two factors:

Optimize transmission mechanism design
Choose appropriate gear ratios: The gear ratio determines the relationship between input force (operating force) and output force (lifting force). By adjusting the gear ratio, it is possible to maintain a certain lifting speed while reducing the operating force.
Use efficient transmission methods: Such as gear transmission, screw transmission, etc., these methods have high mechanical efficiency, converting more input power into the potential energy of the lift table, thereby increasing lifting speed and reducing operating force.

Apply ergonomic principles
Design ergonomic operating handles: The shape, size, and position of operating handles should comply with ergonomic principles, facilitating grip and force application by operators, thus reducing operational fatigue.
Consider operator strength characteristics: During design, account for differences in operator strength to ensure that the lift table operates within a force range acceptable to most operators, achieving quick lifting.

Use auxiliary devices
Add balancing mechanisms: In lift table design, balancing mechanisms can be added to reduce resistance during lifting, thereby decreasing operating force. For example, using springs or gas springs to balance part of the weight.
Use labor-saving devices: Such as levers, pulleys, etc., can increase lifting speed without increasing operating force.

Consider usage scenarios and load requirements
Adjust design according to load: Different load requirements affect the lifting speed and required operating force of the lift table. Therefore, design the structure and transmission mechanism of the lift table based on actual load requirements.
Adapt to usage scenarios: Consider where the lift table will be used, such as space limitations, ground conditions, etc., as these factors can affect the balance between lifting speed and operating force.

Regular maintenance and upkeep
Maintain lubrication of transmission mechanisms: Regularly adding lubricating oil or grease to transmission mechanisms reduces frictional resistance, helping to increase lifting speed and decrease operating force.
Inspect and tighten connections: Ensure all connections are securely fastened to avoid additional resistance and increased operating force due to loosening.

Balancing the relationship between lifting speed and operating force of a manual lift table requires comprehensive consideration of transmission mechanism design, ergonomic principles, application of auxiliary devices, usage scenarios and load requirements, as well as regular maintenance and upkeep. Through proper design and maintenance, it is possible to improve lifting speed while ensuring operational force, enhancing the efficiency and comfort of the lift table.