In fixed locations and with a small range of movement, towed construction machinery has become popular. In fact, towed construction machinery is not a new thing, and large-scale electric shovel equipment has been used in mines for a long time. Due to the insufficient mobility and inconvenient take-up of towed construction machinery, as well as previous environmental policy pressures, this type of towed excavator has not become popular.

With the increasingly strict emission requirements of non road mobile machinery by the country, users' anxiety about the range of pure electric equipment has become increasingly intense. Tow electric devices occupy the advantage of time, place, and people, gradually entering everyone's vision, becoming a new choice for users in fixed places and small mobile range conditions.

Prior to the introduction of electric scooters and loaders by construction machinery manufacturers, there were already self modified electric scooters and loaders by users in the market. These self modified devices have potential risks such as winding and leakage. When host manufacturers launch towed devices, they are also questioned by "users". On the topic of concern to end users, a reporter from First Engineering Machinery Network interviewed multiple industry experts in electric products, providing the most direct answers in the form of quick questions and quick answers.

D1CM: What are the specific requirements for the working conditions of towed equipment?

Answer: Suitable working conditions include inland river docks, mining crushing, car dismantling, scrap steel recycling, etc. The working movement range is basically only 1-2 parking spaces, equivalent to within 30-50 meters.

D1CM: What are the specific requirements for power and voltage for towed equipment?

Answer: The power supply voltage is basically divided by tonnage, and most factories and factory units use mature 380V voltage. Equipment below 60 tons use more 380V industrial electricity. Equipment with a capacity of over 60 tons requires a higher motor power. Considering the price of cables and the convenience of cable movement, a voltage of 6000 volts commonly used in large mines, mining mines, and open-pit mines is generally used for equipment with a capacity of over 70 tons.

D1CM: What are the types of incoming lines for towed equipment? What is the working principle? What are their strengths and weaknesses?

Answer: Actually, there are mainly two types of incoming lines: upper and lower. The incoming line plan is determined based on factors such as equipment operating conditions, excavator movement form, and excavator operation rotation angle. Moreover, the increase in any type of material is an increase in cost for customers, so it is particularly important to choose an inlet mechanism that is suitable for the user's usage scenario.

Taking the above incoming lines as an example, there are generally three types:

The first type is that the excavator does not rotate very much and operates within 180 degrees. It is recommended to use a swing arm type inlet form for this operation, with a simple and practical structure.

The second type, the excavator needs to rotate 360 degrees, which is the most common scenario seen in excavator operations. This scenario often requires raising the large arm very high, usually with a vertical tower on the body, and a cable reel mechanism with a steering wheel. The cable reel of this steering wheel will be installed on the wall or on a separate column.

The third type, the excavator rotates 360 degrees, without the need to lift the large arm very high. At this time, only the cable drum needs to be directly installed on the vehicle body, which can achieve 360 degree rotation and can move or even rotate within a certain range