CN206012915U - A kind of automatic load rejection mechanism of deep sea sampler - Google Patents

Abstract

The utility model discloses an automatic dumping mechanism of a deep sea sampler. The utility model comprises a piston, an outer cylinder, a screw, ballast iron, a steel ball spring, a steel ball, a cylinder cover, a piston spring, an inner cylinder and an O-ring. The upper top of the piston is evenly distributed with through holes, the middle part has a ring groove, and the end is a stepped surface. The through hole on the piston is convenient for seawater to pass through, and it acts as a pressure compensation for the outer cylinder cavity. At the same time, a pressure difference is formed on both sides of the piston to push the piston. The movement of the piston moves to a certain position, and the steel ball enters the ring groove of the piston under the action of the pre-compressed spring, and the ballast iron is released because there is no constraint of the steel ball; the piston and the piston spring form an adjustable resistance mechanism, and the balance is certain Seawater pressure, so that the dumping depth can be adjusted. There is a groove on the inner cylinder, and an O-ring is installed on the groove to seal the inner cylinder cavity. The utility model can ensure that the ballast is automatically released when it reaches a predetermined depth, and has the characteristics of simple structure, convenient assembly and disassembly, and good reliability.

Description

An automatic dumping mechanism for deep sea sampler

technical field

The utility model relates to an underwater dumping technology, in particular to a mechanism for realizing automatic dumping of a deep-sea sampler.

Background technique

With the vigorous promotion of the country's marine development strategy, a large number of underwater equipment technologies have been developed rapidly. At the same time, in order to reduce the danger of human beings working underwater, more and more equipment tends to be automated. In order to realize the automatic flotation of the deep-sea sampler after sampling, when the submerged depth reaches the predetermined value of the device, the dumping mechanism is triggered, so that the sampler obtains positive buoyancy and safely emerges from the water. At present, the floating of the deep-sea sampler is mainly dragged by the winch to the cable connected to the sampler, and the underwater equipment dumping methods are as follows:

Electromagnetic dumping: a dumping method that is triggered by an electromagnet and combined with a mechanical structure. When the electromagnet is de-energized, the heavy object is dumped by releasing the restraint of the mechanical structure. This kind of device has the disadvantages of high power consumption, high cost and unstable operation because the electromagnet is always powered when the load is not dumped.

Explosive bolt throwing: Use explosive bolts to cut the shear lock or break along the bolt weakening groove to separate the heavy object from the body. Although this device has a large load-carrying capacity, it is extremely difficult to ensure that all the bolts are disconnected at the same time because multiple bolts are often required. Moreover, due to the high impact force of the explosion, a protective structure needs to be installed, which is costly.

Fusible dumping: With the single-chip microcomputer as the control core, the alloy resistance wire is fused through a series of circuits, thereby disconnecting the connection with the ballast weight. This kind of device needs to accept external dumping instructions, and the signal is easily disturbed by the outside in the deep sea environment, and the circuit design is complicated and the cost is high.

In order to further meet the stability requirements, power consumption requirements, cost requirements, and automation requirements of the underwater equipment dumping mechanism, it is necessary to further develop a new underwater dumping device.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the utility model provides an automatic dumping mechanism for a deep-sea sampler, which uses seawater pressure as a trigger signal to automatically dump the load, has no power consumption, and has a simple structure and stable action.

The technical scheme adopted in the utility model is:

The utility model comprises a piston, an outer cylinder, a screw, a ballast iron, a steel ball spring, a steel ball, a cylinder cover, a piston spring and an inner cylinder. The inner hole, through holes evenly distributed around the wall of the inner cylinder, the ballast iron inner hole and the through hole of the inner cylinder wall are coaxial, one end of the outer cylinder is an opening, the outer cylinder and the inner cylinder are connected by screws, the cylinder cover and the inner cylinder Tightly connected; one side of the elastic force obtained by the steel ball through spring precompression is pressed against the piston, and the other side is pressed against the steel ball spring, and the elastic force obtained by the steel ball spring through its own precompression is pressed against the steel ball on one side, and the other side is pressed against the pressure Loading iron, the upper top of the piston is evenly distributed with through holes, the middle part has a ring groove, and the end is a step surface. The initial state of the piston spring is in a compressed state. One side is pressed against the step surface at the end of the piston, and the other side is against the cylinder cover. tight.

Further, the length of the ring groove is 1/2 larger than the diameter of the steel ball, and the depth of the ring groove is slightly larger than the diameter of the steel ball.

Furthermore, a groove is formed on the inner cylinder, and an O-shaped sealing ring is installed on the groove.

The through hole on the piston is convenient for seawater to pass through, and it acts as a pressure compensation for the outer cylinder cavity. At the same time, a pressure difference is formed on both sides of the piston to drive the movement of the piston. When the piston moves to a certain position, the steel ball enters the ring of the piston under the action of the pre-compressed spring. At the groove, the ballast iron is released because there is no restraint by the steel ball, and the piston and the piston spring form an adjustable resistance mechanism to balance a certain seawater pressure, so that the dumping depth can be adjusted.

Compared with the prior art, the beneficial effects of the utility model are:

1. The movement of the piston is based on the principle of the differential hydraulic cylinder, and then controls the release of the ballast iron, without energy supply throughout the process.

2. The piston and the piston spring form an adjustable resistance mechanism to balance a certain seawater pressure, so that the dumping depth can be independently adjusted.

3. The parts are all mechanical structures, with strong anti-environmental interference ability and good stability.

4. The parts are simple in structure and easy to process.

Description of drawings

Fig. 1 is the main sectional view of described dumping mechanism;

Among them: 1-piston, 2-outer cylinder, 3-screw, 4-ballast iron, 5-steel ball spring, 6-steel ball, 7-tube cover, 8-piston spring, 9-inner cylinder, 10-ring Groove, 11-o-ring, 12-through hole.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the utility model is made up of piston, outer cylinder, screw, ballast iron, steel ball spring, steel ball, cylinder cover, piston spring, inner cylinder and o-ring.

The piston 1 and the outer cylinder 2 are connected through clearance fit, the ballast iron 4 is evenly distributed in the inner hole around the circumference, and the inner cylinder 9 wall is evenly distributed around the through hole, the inner hole of the ballast iron 4 is coaxial with the through hole of the inner cylinder 9 wall, and the outer One end of the cylinder 2 is an opening, the outer cylinder 2 and the inner cylinder 9 are connected by screws 3, the cylinder cover 7 and the inner cylinder 9 are tightly connected by screws; the elastic force obtained by the spring precompression of the steel ball 6 presses against the piston 1 on one side, and the other side Press against the steel ball spring 5; one side of the steel ball spring presses against the steel ball 6 and the other side presses against the ballast iron 4; the length of the ring groove 10 is 1/2 larger than the diameter of the steel ball 6 1. The depth of the ring groove 10 is slightly larger than the diameter of the steel ball 6; the upper top of the piston 1 is evenly distributed with through holes 12 around, the middle part is opened with a ring groove 10, and the end is a step surface. The initial state of the piston spring 8 is in a compressed state. It is pressed against the step surface at the end of the piston 1, and the other side is pressed against the cylinder cover 7; there is a groove on the inner cylinder 9, and an O-shaped sealing ring 11 is installed on the groove; the through hole 12 on the piston is convenient for seawater to pass through, and the outer cylinder 2. The cavity plays the role of pressure compensation. At the same time, a pressure difference is formed on both sides of the piston to drive the movement of the piston. The piston moves to a certain position. The steel ball 6 enters the ring groove of the piston under the action of the spring 5. The ballast iron 4 has no The restraint of the steel ball is thus released, and the piston 1 and the piston spring 8 form an adjustable resistance mechanism to balance a certain seawater pressure, so that the dumping depth can be adjusted.

Claims (3)

1. An automatic dumping mechanism for deep-sea sampler, including piston (1), outer cylinder (2), screw (3), ballast iron (4), steel ball spring (5), steel ball (6), cylinder Cover (7), piston spring (8) and inner cylinder (9), characterized in that: the piston (1) and the outer cylinder (2) are connected through clearance fit, and the ballast iron (4) is evenly distributed inside Holes, through-holes are evenly distributed around the wall of the inner cylinder (9), the inner hole of the ballast iron (4) is coaxial with the through-hole of the inner cylinder (9), one end of the outer cylinder (2) is an opening, and the outer cylinder ( 2) It is connected with the inner cylinder (9) through the screw (3), and the cylinder cover (7) is tightly connected with the inner cylinder (9); the steel ball (6) presses against the piston (1) on one side with the elastic force obtained by pre-compression of the spring, The other side presses against the steel ball spring (5), and the steel ball spring (5) presses against the steel ball (6) on one side through the elastic force obtained by its own precompression, and the other side presses against the ballast iron (4), and the piston (1 ) is evenly distributed around the upper top of the hole (12), the middle part is opened with a ring groove (10), the end is a step surface, the initial state of the piston spring (8) is in a compressed state, and one side is against the step surface at the end of the piston (1) Tighten, and the other side is tight against the cylinder cover (7). 2. The automatic dumping mechanism of deep-sea sampler according to claim 1, characterized in that: the length of the annular groove (10) is one-half larger than the diameter of the steel ball (6), and the annular groove ( 10) The depth is slightly greater than the diameter of the steel ball (6). 3. The deep-sea sampler automatic dumping mechanism according to claim 1, characterized in that: the inner cylinder (9) is provided with a groove, and an O-ring (11) is installed on the groove.