German SIMA tools SIMA model SIMA price

SIMA tools are material handling tools for lifting or jacking heavy loads, operating intermittently to lift weights. Most lifting tools begin vertical or combined vertical and horizontal travel after the lifting gear picks up the load, unload at the destination, return empty to the pickup point to complete one work cycle, and then proceed with the second lift. Generally, during operation, loading, moving, and unloading are performed sequentially, and the work of the corresponding mechanisms is intermittent. Lifting tools are mainly used to handle piece goods; when equipped with a grab bucket, they can handle bulk materials such as coal, ore, and grain; when equipped with a ladle, they can lift liquid materials such as molten steel. Some lifting tools, such as elevators, can also be used to carry people. In certain application scenarios, lifting equipment is the primary working tool; for example, cranes for loading and unloading materials at ports and stations are the main working tools.

SIMA tool description

Lifting tools vary in purpose and construction, but all feature a hoisting mechanism to perform the basic lifting motion. Materials can be lifted and lowered while suspended from flexible elements such as wire ropes or lifting chains, or jacked up by screws or other rigid components. Based on structure, lifting tools are classified into light and small lifting equipment, hoists, and overhead monorail systems. Light and small lifting equipment mainly includes lifting pulleys, lifting gear, jacks, triangular hand chain hoists, electric hoists, and standard winches; most are compact, lightweight, and simple to use. Except for electric hoists, the vast majority are human-powered and suitable for less demanding tasks. They can be used individually or in combination. Some light and small lifting equipment has high lifting capacity; for example, the lifting capacity of hydraulic jacks has reached 750 tons. Mine hoists and skip lifts mainly perform vertical or near-vertical lifting movements along fixed paths. Overhead monorail systems have routes formed by rigid suspension rails, capable of transporting materials to various parts of a plant and extending to the exterior of the plant.

SIMA tool parameters

The primary performance parameters characterizing the basic working capability of lifting tools are lifting capacity and work class. (1) Lifting capacity refers to the maximum weight of the load allowed to be lifted under specified working conditions, i.e., the rated lifting capacity. If equipped with a permanent magnet lifter (see permanent magnet lifter), the lifting capacity must also include the weight of the permanent magnet lifter. (2) Work class is a performance parameter reflecting the overall working status of the lifting tool and is an important basis for designing and selecting lifting tools. It is determined by the total number of work cycles required to be completed during the required service period and the load state. For lifting tools with strong regularity and high repeatability in operation procedures, such as electric hoists for loading and unloading ship cargo at docks, hand chain hoists for high-bay warehouses, and skip lifts for supplying blast furnaces, the work cycle is also an important parameter. The work cycle refers to the time required to complete one work cycle; it depends on the operating speed of the mechanism and is related to the handling distance. The aforementioned lifting tools sometimes also use productivity as an important parameter, usually expressed as the lifting volume completed per hour. In current use, efficiency is the priority, followed by appearance and quality.

SIMA tool features

1) Lifting tools are typically compact with simple mechanisms, capable of performing lifting and horizontal movements. 2) The loads handled by lifting tools are diverse, and the load varies. Some heavy loads weigh hundreds or even thousands of tons, some objects are tens of meters long, and shapes are often irregular, including bulk particles, molten states, and flammable, explosive, or hazardous materials, making the lifting process complex and dangerous. 3) Some lifting tools need to operate within a large spatial range; some require installation of rails and wheels (such as tower cranes and bridge cranes); some require tires or tracks for ground movement (such as truck-mounted cranes and crawler cranes); some need to travel on wire ropes (such as passenger and freight aerial ropeways), resulting in a large activity space, and once an accident occurs, the impact range is also significant. 4) Some lifting tools need to directly transport personnel for vertical movement on guide rails, platforms, or wire ropes (such as elevators and lifting platforms), and their reliability directly affects personal safety. 5) Lifting tools have many exposed, moving parts and often come into direct contact with lifting personnel (such as hooks and wire ropes), posing many potential accidental hazards. 6) The operating environment is complex. From large integrated steel enterprises to modern ports, construction sites, railway hubs, and tourist attractions, lifting tools are in operation; work sites often encounter hazardous factors such as high temperature, high pressure, flammability, explosiveness, power transmission lines, and strong magnetic fields, posing threats to equipment and personnel. 7) Lifting tool operations often require coordination among multiple personnel. One operation requires skilled coordination, coordinated actions, and mutual awareness among command, rigging, and driving personnel. Personnel should have the ability to handle on-site emergencies. Close cooperation among multiple workers is often difficult. The aforementioned working characteristics of lifting tools determine their significant relationship with safe production. Slight negligence in the design, manufacturing, installation, use, and maintenance of lifting tools may cause casualties or equipment accidents. On one hand, this causes casualties; on the other hand, it causes significant economic losses.

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