How does the high-strength sheet metal bending process ensure the performance and safety of MRL Freight Elevator? ​

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1. High-strength sheet metal bending process creates a sturdy car ​
In the field of MRL Freight Elevator manufacturing, the high-strength sheet metal bending process is the core technology to ensure the excellent sturdiness of the car. This process is different from the traditional sheet metal processing method. It abandons the rough mode of simple stamping or welding splicing and instead adopts high-precision CNC bending equipment and complex process parameter calculation system. The high-strength alloy sheet metal is bent into a complex shape that meets the structural mechanics requirements of the car according to the millimeter-level accuracy requirements. ​
During the bending process, the pressure and angle control applied by the equipment to the sheet metal is extremely critical. According to the material characteristics of the sheet metal, the technicians will accurately set the bending machine's pressing speed, mold temperature and rebound compensation parameters, so that the internal crystal structure of the sheet metal is rearranged during the plastic deformation process, forming a uniform and stable stress field, and completely eliminating the stress concentration phenomenon caused by local over-processing in the traditional process. ​

This refined process treatment has made the structural strength of the side walls, bottom and top of the car a qualitative leap. In actual application scenarios, when the machine room-less freight elevator shuttles between large logistics warehouses, industrial plants and other places, and frequently transports heavy goods stacked to the maximum height of the car, the sturdy car structure can effectively resist the vertical pressure generated by the weight of the goods themselves, as well as the lateral impact caused by the inertia of the elevator start and stop during transportation. Even if there is an accidental scratch during forklift loading and unloading operations, or even a violent collision caused by the dumping of goods, the car built by the high-strength plate bending and forming process can still maintain structural integrity, avoid structural damage such as dents and cracks, and fundamentally ensure the safety and stability of the elevator operation, greatly reduce the frequency of fault repairs caused by insufficient car strength, and significantly extend the life cycle of the elevator. ​
2. Optional anti-collision guardrails provide multiple protections ​
In the safety protection system of machine room-less freight elevators, optional anti-collision guardrails are an indispensable and important part. These anti-collision guardrails are not simple protective devices that are put together temporarily, but professional safety components that have been jointly developed and designed by material mechanics experts and elevator safety engineers, and have passed rigorous impact simulation tests and actual scene verification. In terms of material selection, a composite structure of high-strength engineering plastics and high-strength alloy steel is used. The outer layer of engineering plastics has excellent buffering and energy absorption characteristics, and can absorb a large amount of energy through its own deformation at the moment of collision; the inner layer of alloy steel frame provides stable support stiffness to ensure that the guardrail can still maintain the overall structural form after absorbing energy, avoiding loss of protection due to excessive deformation. ​
From the design concept, the anti-collision guardrail fully considers various potential risks in the operation of the machine room-less freight elevator. In the daily cargo loading and unloading process, due to the operator's blind spot and cargo size estimation deviation, collisions between cargo and car walls often occur. At this time, the anti-collision guardrail installed at the key positions of the four walls of the car can disperse and resolve the impact force generated at the moment of collision with its unique honeycomb energy absorption structure, prevent the local force of the car wall from being too large and causing deformation and depression, and effectively protect the main structure of the car. ​
In more extreme unexpected conditions, such as encountering a violent impact of external objects during the operation of the elevator, the anti-collision guardrail can form a coordinated protection mechanism with the high-strength plate structure of the car. The alloy steel frame inside it will quickly transmit the impact force to the overall structure of the car, using the overall rigidity of the car to disperse the external force, avoiding damage to the local structure due to excessive impact, providing a solid and reliable protective barrier for the goods in the car, and also creating favorable conditions for subsequent elevator troubleshooting and repair work, minimizing the impact of accidents on cargo transportation and normal elevator operation. ​
3. Fully automatic elevator collection function to achieve flexible control​
The fully automatic elevator collection function of the machine room-less cargo elevator is an innovative achievement that integrates advanced automation control technology and intelligent algorithms, realizing seamless switching and efficient operation between driver-driven and unmanned driving modes. In the driver-driven driving mode, the elevator control system fully considers the operator's usage habits and actual operating needs, and designs an intuitive and easy-to-understand operation interface and a convenient function button layout. The driver can manually input instructions according to the transportation requirements of different goods to accurately control the elevator's stop order and stay time between floors. For example, when transporting precision instruments, the driver can accurately control the start and braking speed of the elevator to avoid damage to the goods due to sudden stops and sudden braking; when it is necessary to frequently go back and forth to specific floors for cargo transfer, the preset operation route function can be used to simplify the operation process and improve transportation efficiency. ​
When switched to unmanned driving mode, the fully automatic elevator collection function shows a strong intelligent advantage. This function relies on the multi-type sensors integrated in the elevator (such as weight sensors, position sensors, floor call sensors, etc.) to collect the elevator operation status and external demand information in real time, and transmit these data to the central control system. The system's built-in intelligent scheduling algorithm will calculate the optimal operation route plan in a very short time based on real-time data, combined with operations research principles and path optimization models. During the peak period of logistics transportation, when multiple floors send call requests at the same time and the cargo weight and transportation priority of each floor are different, the system can intelligently allocate elevator resources, give priority to emergency transportation needs, and reasonably plan the parking order of each elevator to avoid empty travel and invalid parking of elevators. At the same time, this function also has self-learning ability. It can continuously optimize the scheduling strategy through the analysis of historical operation data, adapt to the changes in transportation demand of different time periods and different types of goods, ensure that the machine room-less freight elevator can maintain efficient and stable operation under various complex working conditions, and significantly improve the overall efficiency and management level of freight transportation. ​
Fourth, the "door closing delay" button meets various needs ​
The special "door closing delay" button on the control box in the car is an important manifestation of the humanized design of the machine room-less freight elevator, which effectively solves the problem of time control during cargo loading and unloading. In actual cargo transportation scenarios, cargo loading and unloading operations often face many complex situations. For large-volume mechanical equipment, professional lifting equipment is required, and the position of the equipment must be repeatedly adjusted during loading and unloading to ensure accurate alignment; for a large number of scattered goods, it takes a lot of time to stack and fix them in an orderly manner to prevent the goods from shifting and collapsing during transportation. ​
The setting of the "door closing delay" button gives the operator the initiative to flexibly control the closing time of the elevator door. The button operation interface adopts large-size buttons and clear time display design. The operator can simply press the button to freely adjust the elevator door closing time within a certain range according to the actual loading and unloading needs. When transporting extra-long steel, the operator can set the door closing delay time to a longer time so that there is ample time to use a forklift to smoothly deliver the steel into the car and perform detailed fixing operations; when handling fragile goods, the door closing time can also be extended to carefully complete the protective packaging and placement of the goods. This flexible time setting mechanism not only effectively avoids problems such as cargo loading and unloading interruptions and equipment damage caused by premature closing of the elevator door, but also significantly improves the safety and efficiency of cargo loading and unloading operations, enabling machine room-less freight elevators to better adapt to the diversified transportation needs of different industries and different types of goods, fully demonstrating the humanization and practicality of elevator design.