Underwater vehicle ballast device

Abstract

The invention discloses an underwater vehicle ballast device, and belongs to the technical field of underwater vehicles. The device comprises an aircraft frame, a sliding frame, a ballast block, a ballast side plate, a ballast top plate and a hydraulic cylinder, a lifting sliding groove is machined in the aircraft frame and used for being matched with a sliding frame, the end, penetrating through the lifting sliding groove, of the sliding frame is welded to a ballast top plate, after a ballast side plate and the ballast top plate are fastened, a plurality of sets of ballast blocks are embedded between the ballast side plate and the ballast top plate, and the ballast top plate is connected with a push rod of a hydraulic cylinder. The hydraulic cylinder is fixedly connected to an aircraft frame, the hydraulic cylinder drives the ballast top plate, the ballast side plates, the ballast block and the sliding frame to move together through the push rod when working, the lifting sliding groove provides guidance for movement, and the ballast top plate is tightly attached to the bottom of an aircraft when the push rod retracts to the limit position. The problem that the stability of the underwater vehicle is reduced when the underwater vehicle works on the water surface can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater vehicles, and in particular to a ballast device for underwater vehicles. Background Art

[0002] Underwater vehicles are commonly used equipment for water exploration. To ensure the stability of the vehicle, it is necessary to balance the overall gravity when designing the vehicle, and install high-density ballast such as lead blocks at the bottom of the vehicle to make the initial stability of the vehicle as large as possible, that is, the center of gravity of the vehicle is closer to the bottom, and gravity is used to generate a restoring torque to maintain the overall stability of the vehicle. When the underwater vehicle floats to the surface to work, in order to reduce the interference of waves on the load, the load needs to be lifted above the water surface, which leads to a decrease in the initial stability and reduced stability.

[0003] Existing underwater vehicles are usually slender, and the ballast weight is short relative to the center of the vehicle. In order to achieve a high initial stability, a large mass ballast is usually required, and a buoyancy block is also required to balance the overall buoyancy of the vehicle, which increases the overall volume and mass of the vehicle and affects the maneuverability of the vehicle. Summary of the invention

[0004] In view of this, the present invention provides an underwater vehicle ballast device, which can solve the problem of reduced stability of the underwater vehicle when working on the water surface.

[0005] An underwater vehicle ballast device comprises a vehicle frame, a sliding frame, a ballast block, a ballast side plate, a ballast top plate and a hydraulic cylinder;

[0006] The aircraft frame is processed with a lifting slide groove, which is used to cooperate with the sliding frame. One end of the sliding frame is welded to the ballast top plate after passing through the lifting slide groove. After the ballast side plates and the ballast top plate are fastened, multiple groups of ballast blocks are nested between the ballast side plates and the ballast top plate. The ballast top plate is connected to the push rod of the hydraulic cylinder. The hydraulic cylinder is fixedly connected to the aircraft frame. When the hydraulic cylinder is working, the push rod drives the ballast top plate, ballast side plates, ballast blocks and sliding frame to move together. The lifting slide groove provides guidance for the movement. When the push rod is retracted to the limit position, the ballast top plate is close to the bottom of the aircraft.

[0007] Furthermore, the ballast top plate is connected to the hydraulic cylinder push rod through a ball joint group, and the two ends of the ball joint group are respectively connected to the ballast top plate and the hydraulic cylinder push rod through screws.

[0008] Furthermore, pin holes are provided at the top and bottom of the sliding frame, and the sliding frame is fixed to the lifting slide slot by means of pins when the ballast block is extended or retracted.

[0009] Furthermore, when the aircraft is sailing underwater, the ballast device is in a retracted state, and the bottom of the device is flush with the bottom of the aircraft; when the aircraft is working on the water surface, the hydraulic cylinder provides thrust and the sliding frame extends downward along the lifting slide; when the aircraft needs to dive, the hydraulic cylinder provides pulling force and the sliding frame retracts.

[0010] Furthermore, the ballast side plates and the ballast top plate are fastened by bolts.

[0011] Beneficial effects:

[0012] 1. The present invention installs the ballast block on the bottom of the aircraft through a sliding frame. The sliding frame cooperates with the lifting slide groove arranged on the aircraft frame and is driven by a hydraulic cylinder. When the aircraft is working on the water surface, the hydraulic cylinder drives the sliding frame to extend the ballast block out of the aircraft. Under the condition of the same mass of the ballast block, a larger torque can be generated, which is more conducive to increasing the initial stability and improving the stability of the aircraft working on the water surface.

[0013] 2. When the vehicle is working underwater, the hydraulic cylinder drives the sliding frame to retract the ballast block, and the ballast block is attached to the bottom of the vehicle, which is beneficial to reduce the impact on the vehicle's maneuverability.

[0014] 3. The present invention limits the position through the sliding frame and the lifting slide groove during the lifting movement, and installs a ball joint group on the head of the hydraulic cylinder push rod, so as to ensure that the hydraulic cylinder push rod is not subjected to bending moment when the movements of the sliding frames on both sides are not completely synchronized, thereby improving the reliability and life of the ballast device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the underwater vehicle ballast device of the present invention;

[0016] Figure 2 This is a schematic diagram of the underwater vehicle ballast device in a retracted state;

[0017] Figure 3 This is a schematic diagram of the underwater vehicle ballast device in the extended state.

[0018] Among them, 1-aircraft frame, 2-sliding frame, 3-ballast block, 4-lifting slide, 5-ballast side plate, 6-ballast top plate, 7-hydraulic cylinder, 8-ball joint group. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0020] As attached Figure 1 As shown, the present invention provides an underwater vehicle ballast device, including a vehicle frame 1, a sliding frame 2, a ballast block 3, a ballast side plate 5, a ballast top plate 6, a hydraulic cylinder 7 and a ball joint group 8.

[0021] A lifting slot 4 is processed on the aircraft frame 1, the hydraulic cylinder 7 is fastened to the aircraft frame 1 by screws, the ballast side plate 5 and the ballast top plate 6 are fastened by bolts, and multiple groups of ballast blocks 3 are nested between the ballast side plate 5 and the ballast top plate 6 to ensure that the ballast blocks 3 are firm and reliable in the aircraft. The ballast top plate 6 is welded to the sliding frame 2, and the sliding frame 2 passes through the lifting slot 4 and can slide up and down in the lifting slot 4. The ballast top plate 6 is connected to the hydraulic cylinder 7 push rod through the ball joint group 8.

[0022] The installation process is as follows: first, fix the hydraulic cylinder 7 to the aircraft frame 1 with bolts, then assemble the ballast side plate 5, ballast block 3, ballast top plate 6, and sliding frame 2 as a whole, and insert the sliding frame 2 into the lifting slide groove 4 on the aircraft frame 1. Pin holes are opened on the top and bottom of the sliding frame 2. When the ballast is extended or retracted, the sliding frame 2 is fixed to the lifting slide groove 4 by pins. The two ends of the ball joint group 8 are respectively connected to the ballast top plate 6 and the hydraulic cylinder push rod by screws. The connection method of the ball joint group 8 can ensure that the hydraulic cylinder push rod is only subjected to tension but not bending moment.

[0023] Working process: When the aircraft is sailing underwater, the ballast device of the present invention is in a retracted state, and the bottom of the device is flush with the bottom of the aircraft, which is conducive to reducing the resistance to the aircraft. When the aircraft is working on the water surface, the hydraulic cylinder 7 provides thrust, and the sliding frame 2 extends downward along the lifting slide 4. Due to the increase in the force arm of the ballast block 3, the initial stability of the aircraft is effectively increased. When the aircraft needs to dive, the hydraulic cylinder 7 provides pulling force, and the ballast block 3 is reset after the sliding frame is retracted.

[0024] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ballast device for an underwater vehicle, characterized in that: It includes a craft frame, a sliding frame, a ballast block, a ballast side plate, a ballast top plate and a hydraulic cylinder; The aircraft frame is processed with a lifting slide groove, which is used to cooperate with the sliding frame. The end of the sliding frame after passing through the lifting slide groove is welded to the ballast top plate. After the ballast side plates and the ballast top plate are fastened, multiple groups of ballast blocks are nested between the ballast side plates and the ballast top plate. The ballast top plate is connected to the push rod of the hydraulic cylinder. The hydraulic cylinder is fixedly connected to the aircraft frame. When the hydraulic cylinder is working, the push rod drives the ballast top plate, ballast side plates, ballast blocks and sliding frame to move together. The lifting slide groove provides guidance for the movement. When the push rod is retracted to the limit position, the ballast top plate is close to the bottom of the aircraft.

2. The underwater vehicle ballast device according to claim 1, characterized in that: The ballast top plate is connected to the hydraulic cylinder push rod through a ball joint group, and the two ends of the ball joint group are respectively connected to the ballast top plate and the hydraulic cylinder push rod through screws.

3. The underwater vehicle ballast device according to claim 2, characterized in that: The top and bottom of the sliding frame are provided with pin holes, and the sliding frame is fixed on the lifting slide slot by the pins when the ballast block is extended or retracted.

4. The underwater vehicle ballast device according to claim 3, characterized in that: When the aircraft is sailing underwater, the ballast device is in a retracted state, and the bottom of the device is flush with the bottom of the aircraft; when the aircraft is working on the water surface, the hydraulic cylinder provides thrust and the sliding frame extends downward along the lifting slide; when the aircraft needs to dive, the hydraulic cylinder provides pulling force and the sliding frame retracts.

5. An underwater vehicle ballast device according to claim 3 or 4, characterized in that: The ballast side plates and the ballast top plate are fastened by bolts.

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