trolley braking system

Abstract

The invention discloses a tackle braking system which is characterized in that an electromechanical control valve, a shunt valve, a branch oil way block, a normally closed braking device, a supporting frame, an emergency oil way block, a main oil way block, an electric control box, a cable and a hydraulic pipeline are mounted on an outer wall of a cylindrical tower body; a hydraulic pump station, an electromagnetic hydraulic lock, an integrated block, an electromagnetic control valve, an electric control cabinet, a pressure sensor and a power distribution cabinet are arranged in the cylindrical tower body to form the tackle braking system; the tackle braking system can effectively implement effective and safe deceleration braking on a vertical-movement high-speed tackle at different heights, so as to meet overload and safe use requirements of the tackle; performance requirements of fixed point ejection and sliding ejection of the tackle at the set height in air are ensured; and the tackle can safely and reliably stay in the air and recover to the ground after ejection operation.

Description

technical field [0001] The invention relates to a trolley braking system, in particular to a trolley braking system applied to vertical braking, horizontal braking, mines, elevators, high-speed rail, light rail, and aerospace scientific experiments. Background technique [0002] In the "Unfavorable Posture Ejection Tower" project, it is necessary to design a pulley braking system, which requires a pulley with a total mass of 4800 kg to make a vertical free-fall movement from a height of 120 meters along the vertical slide rail. Under the corresponding different speed conditions, the pulley is used for ejection tests in different postures, and the ejection force is up to 8 tons. At the same time of ejection, the trolley brake system effectively decelerates and brakes the trolley to meet the overload and safety requirements of the trolley. The free-falling block from a height of 120 meters has a linear velocity of 48.5 m / s when it falls from the ground, and produces an impact...

AI Technical Summary

Problems solved by technology

If the current anti-drop device commonly used in mines and elevators is used, it cannot meet the braking requirements of such a huge impact force

If the braking system is installed on the trolley, that is, on-board braking, all the power supply, oil source, hydraulic pressure and electrical control components required by the braking system must be installed in the trolley that runs at high speed and has a small space. , maintenance and other issues, and greatly increased the weight of the block. When the block is in free fall, it will generate a greater inertial force, and it is necessary to provide huge, stable and continuous energy to safely stop the block. However, the huge Energy means that a larger oil source and a larger installation space are required. In terms of reliability and feasibility, it is technically impossible to install a braking system on a block with limited space and high-speed fall

In addition, if the on-board braking system breaks down and the brake fails, the unsafety and unreliability of the tackle will be greatly increased, which will easily cause damage to the tackle and lead to serious safety accidents.

[0003] At present, there is no braking system suitable for vertical block ejection projects in China. In order to meet the requirements of vertical block ejection tests, it has become an urgent requirement and a new development to develop a safe, reliable, and good braking effect block braking system. Target

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