| CPC B63G 8/18 (2013.01) [B63G 8/001 (2013.01); B63G 8/22 (2013.01); B63G 2008/002 (2013.01)] | 9 Claims |
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1. A heave survey platform, comprising:
a body, comprising a lower diversion cover, a lower housing, an upper housing and an upper diversion cover which are sequentially connected from bottom to top in that order;
two fixed wings, symmetrically disposed on two sides of a middle part of the body; wherein an axis of the body is located in a plane defined by extension directions of the two fixed wings;
two variable wing mechanisms, wherein each of the two variable wing mechanisms comprises a variable wing, the two variable wings of the two variable wing mechanisms are symmetrically disposed on two sides of a lower end of the body, and each variable wing is configured to swing between a first position coplanar with the plane and a second position forming an angle with the plane to generate a lift force on the body at the second position, thereby to make the body move in a radial direction or change attitude;
a buoyancy mechanism comprising:
an inner oil pocket assembly, comprising: an inner oil pocket disposed in the upper housing;
an outer oil pocket assembly, comprising: an outer oil pocket disposed in the lower diversion cover;
an oil path control assembly, disposed in an oil path between the inner oil pocket and the outer oil pocket, and configured to pump hydraulic oil between the inner oil pocket and the outer oil pocket, wherein the oil path control assembly comprises:
a miniature plunger pump, wherein an oil inlet end of the miniature plunger pump is connected with an oil outlet end of the inner oil pocket, and an oil outlet end of the miniature plunger pump is connected with an oil inlet end of the outer oil pocket, and the miniature plunger pump is configured to pump the hydraulic oil to the outer oil pocket from the inner oil pocket;
a direction control valve, wherein a first inlet and a second inlet of the direction control valve are connected with an oil outlet end of the outer oil pocket, a third inlet of the direction control valve is cut off from the outer oil pocket, and an outlet of the direction control valve is connected with an oil inlet end of the inner oil pocket and is selectively connected to one of the first inlet, the second inlet and the third inlet to make the hydraulic oil to return to the inner oil pocket or be cut off inside the outer oil pocket, so as to change a drainage volume of the outer oil pocket;
a pressure reducing valve, disposed between one of the first inlet and the second inlet and the outer oil pocket and configured to reduce a pressure of the hydraulic oil flowing back to the inner oil pocket, thereby to reduce an oil return speed and change a change speed of the drainage volume of the outer oil pocket;
a one-way valve, disposed between the miniature plunger pump and the outer oil pocket to form a unidirectional circulating oil path between the inner oil pocket and the outer oil pocket; and
a second motor, wherein an output end of the second motor is connected with a main shaft of the miniature plunger pump and configured to drive the miniature plunger pump;
wherein the heave survey platform has a first-pressure conduction state, a second-pressure conduction state and a cut-off state; in the first-pressure conduction state, the hydraulic oil flows back from the outer oil pocket to the inner oil pocket through the pressure reducing valve, thereby to make the heave survey platform dive; in the second-pressure conduction state, the hydraulic oil flows back from the outer oil pocket to the inner oil pocket according to a power of the miniature plunger pump, thereby to make the heave survey platform dive at a speed higher than that of the first-pressure conduction state; and in the cut-off state, the hydraulic oil flows back from the inner oil pocket to the outer oil pocket through the miniature plunger pump, thereby to make the heave survey platform float.
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