JPS6316634Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to an easy-to-use heavy plow separation device operated by water pressure for recovering observation test objects dropped into water.

(Prior Art) A conventional separation device of this type is schematically shown in FIG. In the figure, 1 is a command generator, 2 is an underwater transmitter, 3 is a test case with an air chamber, 4 is an underwater receiver, 5 is a command analysis processing unit, and 6 is a gas generator operated by gunpowder ignition. The vessel, 7 is the separating part, and 8 is the heavy plow. The thus configured disconnection device operates as follows. Now, when a command is generated from the command generator 1 at sea, the command information is emitted into the sea from the transmitter 2, the receiver 4 of the test case 3 receives it, and the analysis processing unit 5 receives the command information. The content is analyzed to determine whether it corresponds to a predetermined signal, and as a result, if the signal is a corresponding signal, the gas generator 6 is activated, and the heavy plow 8 is disconnected by the disconnection section 7. , the test case 3 is levitated. Therefore, according to this command method,
Although it is possible to levitate the test case at a desired time, there are disadvantages such as it is difficult to separate the heavy rod at a specific depth, and the method and mechanism are complicated and large, resulting in high cost. In addition, there is another type of hydraulic disconnection device as shown in FIG. 2. In this figure, the same parts as in FIG. When the water pressure is detected, the separating section 7 composed of a spring or a hydraulic valve is operated to separate the heavy joist 8 and float the test case 3. However, like the above-mentioned command type, this hydraulic type also has the drawbacks of complicated mechanical parts, large size, and high cost. As mentioned above, all of these conventional devices have complicated operating methods and mechanisms, and are large in size. Although they are suitable for large test cases, they are difficult to implement in small test cases, and The handling of gunpowder and the reloading method are also difficult, so workability is poor in maritime operations where speed is required.

(Purpose of the invention) The object of the invention is to provide a small and easy-to-handle disconnection device that can be implemented with a simple mechanism not only in large test cases but also in small ones.

(Structure of the invention) Therefore, in order to achieve these objectives, the present invention is designed to removably attach the upper end to the lower part of a test casing having an air chamber, and to open a central hole of a predetermined diameter provided in the heavy plow. After passing through the string, the lower end is tied to a balloon made of an elastic material such as rubber or a plastic material such as plastic, and the balloon is compressed or destroyed by water pressure. Only the balloon or the string floats up from the center hole of the heavy plow, and as a result, the heavy plow falls, creating the effect of separation. The present invention will be described in detail below with reference to embodiments.

(Embodiment) FIG. 3 is a schematic diagram showing an embodiment of the present invention. The same parts as in FIGS. A cylindrical hole 8a is bored. 10 is a string whose upper end is removably attached to the lower part of the air chamber 3 with a stopper hole or stopper, and whose lower end is strongly connected to a balloon 11 made of rubber or the like (hereinafter referred to as joint 10). 1
It is called 1. ). The present embodiment is configured as described above, and operates as follows. That is, the center hole 8a of the heavy shaft 8 is inserted into the test case where observation is to be made to a certain depth.
When the joints 10 and 11 that have been passed through are attached and dropped into water, the test case 3 continues to sink due to the load of the heavy peg 8 which exceeds the buoyancy of the test case 3. On the other hand, the rubber balloon 11, whose upper and lower parts are thinner than the center, is compressed as water pressure increases, as shown in FIG. It passes through the hole 8a, releases the heavy peg 8, and the test casing 3 with the air chamber begins to float due to its buoyancy. Note that the depth can be adjusted by changing the diameter of the center hole 8a of the heavy peg 8. In addition, the balloons used are made of rubber,
It may also be made of other elastic materials. As described above, by adopting a simple mechanism in this example, it is possible to equip the detachment device even in a small observation test case, and it has the advantage of being able to quickly attach the heavy plow at the time of re-dropping. .

Furthermore, as another embodiment, a plastic material such as plastic may be used as the material for the balloon in the previous embodiment, but in this case, the balloon is destroyed by water pressure to release the heavy cylinder and test This allows the casing to float, making it suitable for underwater observation at deeper depths than the previous embodiment could withstand.

(Effects of the invention) As explained above, the invention is a small and simple mechanism that uses a balloon that is sensitive to water pressure, so it can be used as a small sonobuoy, a small buoy for measurement and observation such as temperature and salinity measurement or underwater photography. It has great effects, such as being able to be quickly and easily attached to the casing, and being able to be easily and reliably retrieved from a certain depth underwater. can be used.

[Brief explanation of drawings]

Figures 1 and 2 are schematic explanatory diagrams of conventional devices, Figure 3 is a schematic diagram showing an embodiment of the present invention, and Figure 4 is a diagram showing the relationship between the heavy plow and the balloon at the time of separation according to the present invention. This is an enlarged view. 3...Test casing with air chamber, 8...Heavy shell, 8
a... Cylindrical hole, 10... String, 11... Balloon.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a hydraulic separation device for separating a casing having an air chamber from a heavy hammer at a predetermined underwater depth,
It consists of a string whose upper end is removably attached to the lower part of the casing, and whose lower end is tied to a balloon after passing through the center hole of a predetermined diameter of the heavy spigot, and when the heavy spigot is normally supported by the balloon. 1. A hydraulic disconnection device characterized in that when a predetermined water pressure is reached, the heavy plow can be separated by falling off the balloon deformed by the water pressure. (2) The hydraulic disconnection device according to claim 1, wherein the balloon is made of an elastic material. (3) The hydraulic disconnection device according to claim 1, wherein the balloon is made of plastic material.