Hydraulic lifting column with shallow embedding depth

Abstract

The invention discloses a hydraulic lifting column with a shallow embedding depth and belongs to the field of lifting columns. The hydraulic lifting column with the shallow embedding depth comprises an embedded bucket and a lifting internal column; the embedded bucket is totally buried under the ground; the lifting internal column is positioned in the embedded bucket; the hydraulic lifting column with the shallow embedding depth further comprises a double-section hydraulic motor; one end of the double-section hydraulic motor is fixed at the bottom of the embedded bucket; the double-section hydraulic motor is positioned in the lifting internal column; a primary telescopic rod and a secondary telescopic rod are arranged at the other end of the double-section hydraulic motor; the secondary telescopic rod is positioned in the primary telescopic rod; and a power output end of the secondary telescopic rod is fixedly connected with the lifting internal column. According to the double-section hydraulic motor, as the telescopic rods are arranged in two stages, the height of a hydraulic oil cylinder can be greatly reduced; and therefore, the height of the embedded bucket can be greatly reduced when the motor is embedded, the seepage quantity can be reduced, the construction difficulty can be reduced, and the motor mounting and overhauling are both convenient; and meanwhile, due to the arranging of the integrated lifting internal column, more force bearing points are realized in a collision so that the collision resistance of the lifting internal column is better.

Description

technical field [0001] The invention relates to the field of lifting columns, in particular to a hydraulic lifting column with a shallow pre-embedded depth. Background technique [0002] Lifting bollards, also known as anti-collision bollards, are widely used in urban traffic, gates of the military and important state organs and their surroundings, pedestrian streets, expressway toll stations, airports, schools, banks, large clubs, parking lots, etc. Vehicle restrictions effectively guarantee the traffic order and the safety of major facilities and places. The hydraulic lifting column in the prior art uses hydraulic oil as the driving medium, and the column is driven up and down through the external hydraulic power unit, which makes it inconvenient to maintain and replace the oil pipe laying, and a group of lifting columns is connected to a group of hydraulic power units. The pressure at the oil pipe port is uneven, which affects the control and use. The built-in hydraulic ...

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Problems solved by technology

[0004] For the lifting column with built-in motor, generally due to the limitation of the height of the motor, the pre-embedded bucket has to be designed to be longer, which requires deep excavation for burial, and the construction is difficult; in order to reduce the pre-embedding, the existing double-section lifting column can only The hydraulic device that uses oil pipes to deliver oil is easily damaged and inconvenient to maintain. The pillars exposed to the bottom are designed with a double-section structure, and this makes the anti-collision effect very poor, and the action points are concentrated on the thicker pillars below.

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