Rotary vane type high pressure steering engine

Abstract

The invention relates to a rotary vane high-pressure steering engine, mainly comprising a revolving shaft, a stator plate, a moving plate, a cylinder body, an upper cover and a lower cover. The revolving shaft is a coil typed revolving shaft with round end faces respectively arranged at the two ends, the cylinder body is sheathed on the round end faces of the coil typed revolving shaft, a sealing ring is arranged between the round end faces of the coil typed revolving shaft and the cylinder body, the moving plate is fixed between the revolving shaft and the two round end faces through a sealing ring of the moving plate by bolts, the stator plate is fixed on the inner wall of the cylinder body of the adjacent moving plates through a sealing ring of the stator plate by bolts, oil holes respectively arranged on the two sides of the stator plate are communicated with an oil supply hole and an oil return hole of the cylinder body, and the upper cover and the lower cover are arranged at the two ends of the coil typed revolving shaft through a shaft housing and fixed at the two end faces of the cylinder body by bolts. The invention has the advantages that rudder pushing is smooth, volume is small, axial force does not exist, a cylinder cover does not bear the oil pressure, high-pressure oil can be used for working, maintenance is convenient, and a double steering engine or a multi-stage steering engine can be combined conveniently, and the invention is applicable to large, medium and small-sized ships.

Description

technical field [0001] The invention relates to a rotary vane hydraulic steering gear for ships, in particular to a rotary vane high pressure steering gear capable of using high-pressure oil as power, and belongs to the field of rotary vane hydraulic steering gear. Background technique [0002] The rotary vane hydraulic steering gear that has been used so far in existing ships mainly adopts the oil motor structure of the rotor and blades. Its structure is as follows: figure 1 with 2 As shown, it mainly includes a cylinder body 1, a fixed piece 2, a rotating shaft 3, a moving piece 4, a sealing strip 5, an upper cover 6, and a lower cover 7. The moving piece 4 is fixed on the rotating shaft 3, and the cylinder body 1 is set on the moving piece. On the outer edge of the piece 4, the fixed piece 2 is installed on the inner wall of the cylinder between the adjacent moving pieces, the upper cover 6 and the lower cover 7 are installed at both ends of the cylinder and fixed on the...

AI Technical Summary

Problems solved by technology

Although its structure is simple, it also obviously has the following defects: 1. Because the inner surface of the cylinder head is directly in contact with the hydraulic chamber, it must bear the alternating action of high and low pressure oil, the axial stress is large, and the cylinder head is prone to deformation, which makes the cylinder head and The axial gap between the moving moving pieces increases, which in turn causes the bolts fixing the cylinder head and the fixed piece to stretch, resulting in an increase in the axial clearance of the fixed piece, and the seal is prone to leakage

2. The section shape of the moving piece and the fixed piece is at right angles. The relative movement between the moving piece and the cylinder block and the cylinder head needs to be sealed, and the relative movement between the fixed piece and the rotor needs to be sealed. The sealing strips between them must form a right angle, the sealing strips cannot be formed at one time, and they will be misplaced and spliced ​​during the assembly process, resulting in poor sealing reliability

3. In actual manufacturing, in order to improve the sealing performance, both the cylinder head and the moving piece are sealed by connecting high-pressure oil in the groove of the sealing strip so that the sealing strip tightly fits the inner wall of the cylinder head under the action of high-pressure oil. The contact surface between the plate and the cylinder body, so as to strengthen the sealing performance. In this way, the cylinder head, the moving plate and the fixed plate need to process the process hole, and the pressure valve is assembled on the moving plate or the fixed plate to ensure that the high pressure oil in the groove is always in contact with the high pressure chamber. This increases the manufacturing difficulty and assembly difficulty for the cylinder head, moving and fixed pieces, especially the sealing strip also needs to be specially designed and manufactured, which is costly and not conducive to maintenance

[0003] Therefore, the existing rotary vane hydraulic steering gear can only work with medium and low pressure oil, and cannot bear the pressure of higher high pressure oil, so that the existing rotary vane hydraulic steering gear has a large volume, a large occupied area, and a heavy weight. Obvious defects such as high maintenance cost

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