JPS5815848Y2 - Underwater sensor holding device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an underwater sensor holding device that allows the sensor to be raised and lowered as required.

As ocean development has become more active in recent years, the need for ocean data has also increased. To date, various types of automatic observation devices have been proposed, but all of them have sensors fixed underwater.

In addition, for temporary observation, a method of lowering the sensor to a predetermined depth using a manual or electric winch has also been put into practical use.

However, underwater fixed sensors require enormous costs to maintain and inspect due to the peculiarities of the ocean, ie, the adhesion phenomenon of shellfish and seaweed.

On the other hand, temporary observation using a winch requires human hands to operate the winch, and all lifting and lowering of the sensor relies on the operator's visual observation.

To solve these shortcomings, a fully automatic observation device was developed in which a winch is mounted on a buoy held offshore and the sensor is raised and lowered by commands from land.

One of the challenges with this new observation method is how to accommodate the sensor, which can be raised and lowered automatically, and how to hold the sensor during observation pauses.

The purpose of the present invention is to solve this problem and provide an underwater sensor holding device that allows long-term stable observation and dramatically improves maintainability.

This will be explained below along with examples.

In FIG. 1, reference numeral 1 denotes a buoy hull, to which an electric winch 2 and a guide pulley 3 are attached by respective fixed stands 2a and 3a.

4 is a sensor, and 5 is a cable that has both the mechanical strength to suspend the sensor 4 and the function of transmitting electrical signals.

6' is a connector that mechanically and electrically connects the cable 5 and the sensor 4; 5a and 5b are deceleration cams and stop cams molded at predetermined positions on the cable 5; and 6' is a deceleration cam that passes through the guide pulley 3. and a switch for detecting the stop cam 5b, which is fixed to the guide pulley fixing base by a mounting plate 7.

FIG. 2 shows the detailed structure of the main part, and the upper part 4a of the sensor 4 is formed in the shape of a truncated cone.

The sensor 4 is held in a cylindrical sensor well 11 by a synthetic resin shock absorbing block 8 having an inverted funnel-shaped opening 8a with the same taper as this truncated cone, a spring, and a cover 10 that can be divided into two from the center. .

Note that the shock absorbing block 8 is prevented from falling by a stopper.

Reference numeral 13 indicates an eye bolt used when attaching or detaching the cover 10.

Next, the operation of this embodiment will be explained.

The electric winch 2 receives a command from land and lets out the cable 5 to move the sensor 4 downward in the direction of arrow A-.

When the sensor 4 reaches a predetermined depth 4A, it stops and performs observation.

After completing this observation, the sensor 4 is unwound in the direction of arrow B and housed in the sensor well 11.

At this time, the deceleration cam 5a on the cable operates the switch 6 to decelerate the rewinding speed of the electric winch 2, and further stops the electric winch 2 by passing the stop cam 5b, but in reality, the stopping is delayed for a moment due to inertia. Become.

At this instant, the truncated conical upper part 4a of the sensor 4 is securely fitted into the inverted funnel-shaped opening 8a of the shock absorbing block 8, further pushing up the spring 9.

As a result, the weight of the sensor 4 and the compressive force of the spring 9 are applied to the cable 5, and the sensor 4 is reliably held in the sensor well 11 so as not to vibrate greatly due to the movement of the buoy, the force of waves, etc.

Further, during maintenance, the upper part of the sensor well 11 is opened by loosening the eye bolt 13 and removing the cover 10 in two parts.

In this state, the electric winch 2 can be manually operated to raise and hold the sensor 4 to the maintenance position 4B.

The technology of this device can be applied not only to buoys installed on the water, but also to similar observation devices on land (for example, devices that observe lake water from a dam body).

As is clear from the above embodiments, according to the present invention, the sensor that can be raised and lowered can be held securely, and the practical effects are great.

[Brief explanation of drawings]

FIG. 1 is a side view of an underwater sensor holding device according to an embodiment of the present invention, and FIG. 2 is a sectional view of the main parts thereof. 4...Sensor, 8...Shock absorption block, 9...Spring, 10...Cover.

Claims (1)

[Scope of utility model registration request] A stopper for preventing the shock absorbing block from falling is provided on a part of the inside of the cylindrical sensor well, and a removable cover is provided on the top of the sensor well. A shock-absorbing block having an inverted funnel-shaped opening that fits is provided movably, a spring is provided between the upper part of the shock-absorbing block and the cover, and the truncated conical shape rises due to the elastic force of the spring. An underwater sensor holding device characterized in that it absorbs a shock generated when the sensor having a head comes into contact with the impact block, and also applies tension to a cable suspending the sensor.