JPH0342397A - Submarine audie intensity measuring jig for ship - Google Patents

Abstract

PURPOSE:To facilitate installation and transportation by a method wherein a title measuring jig to measure noise in water emitted from a ship comprises a mechanism for movement capable of moving a measuring device in the direction of the stern on a deck, and a float by which a mechanism for support and a measuring jig are floated. CONSTITUTION:A measuring jig is provided with a mechanism A for movement capable of moving a measuring device containing a probe, e.g. hydrophone, in the direction of the stern on the deck of a ship A and formed such that a guide rope 3 is horizontally developed through utilization of support metals 2... for movement supported to hand rails on the deck. The measuring jig is further provided with a mechanism B for securely positioning the measuring device moved to a given position and a support mechanism C to support vertical and horizontal support shafts F and G in an orthogonal position. Further, the measuring jig is provided with a float D mounted on the vertical support shaft F and floating the measuring jig during movement, and intensity probe holding tools E respectively mounted on the support shafts F and G.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an underwater sound intensity measuring jig for ships.

(Prior Art) As a method for measuring underwater noise emitted from a ship, an underwater sound intensity measurement method using a hydrophone can be mentioned. Measurement jigs for carrying out this underwater acoustic intensity measurement method include: 1) magnetic method;
) Raft method, 3) Rail method, etc. However, when measuring underwater noise on an actual ship using these measurement methods, large-scale measurement jigs are required due to conditions such as the measurement target or measurement environment.
Installation and transportation were not easy.

(Problem to be solved by the invention) To easily and accurately measure underwater noise (intensity) emitted from a ship over a wide range of the bottom and sides of the ship, from the bow to the stern, by operating on the upper deck. It is an object of the present invention to provide a measuring jig that can measure the width of the bottom of the ship at equal intervals even if the width of the ship changes. Furthermore, it is an object of the present invention to provide a portable measurement jig that can be easily carried on board the vessel to be measured, and to allow it to be easily assembled on the upper deck.

(Means for Solving the Problems by the Invention) 1) A moving mechanism capable of moving the measuring device in the bow and stern direction on the deck, a fixing mechanism that fixes the measuring device moved to a predetermined position relative to the ship, and a measuring device. A support mechanism that supports the vertical support shaft and the horizontal support shaft with the device at mutually orthogonal positions, a float that keeps the measurement jig floating during movement, and an intensity probe for measuring the intensity of ships. It consists of an intensity probe holder to hold the probe, and can be assembled on the deck and moved and measured on the deck.

2) The movement mechanism is supported by a handrail post on the upper deck, and has a plurality of movable support hardware arranged in the bow and stern direction, and is extendable and retractable.
The guide rope is supported by the supporting hardware and extends horizontally in the bow and stern direction.

3) The longitudinal support shaft is configured to move in the bow and stern direction by operating a moving cable provided at its lower end on the deck, and a support plate equipped with a linear bearing is attached to the longitudinal support shaft, The linear bearing is guided by the guide rope to slide.

4) The fixing mechanism uses a gutter coaming on the deck to fix the position of the measuring device relative to the ship, using a support shaft support hardware that extends outboard, and a vertical support hardware attached to the tip of the support shaft. The holding hardware for the support shaft holds the longitudinal support shaft by expanding the brake tube using air pressure.

5) The holding hardware includes an inner cylinder surrounding a vertical support ring between the upper lid and the lower flange, a soft tube wound spirally around the outside of the inner cylinder, a sleeve outside the spiral tube, and An outer cylinder is wrapped around the outside of the cylinder, and the inner cylinder is divided in the circumferential direction, and springs are installed at upper, lower and intermediate positions, which constantly urge the cylinder to move outward. The front helical tube is connected to an air supply.

6) The support mechanism consists of an I-made support metal fitting provided at the lower end of the vertical support shaft and a bellows mechanism attached to the horizontal support shaft.

7) When the steel support hardware horizontally supports the horizontal support shaft and the vertical support shaft moves in the width direction.

It is designed to move via a lateral support shaft, and the lateral support shaft can be assembled into a single member by symmetrically connecting a plurality of members with a plurality of joints.

8) The bellows mechanism consists of a sleeve that can move in the axial direction relative to the lateral support shaft, and a bellows arm attached to the sleeve.The sleeve at the center of the bottom of the ship is fixed relative to the lateral support shaft, and the bellows mechanism A plurality of sleeves provided symmetrically on the left and right sides are slidable with respect to the lateral support shaft, and among these slidable sleeves, two sleeves at both end portions are attached to the steel part support hardware. It is connected to the bottom via a bracket.

9) A float is provided on the longitudinal support shaft, and has a built-in holding mechanism using pneumatic pressure similar to the fixing mechanism, so that when the device moves in the bow and stern direction, the entire device is floated and held by this float.

10) The intensity probe holder is installed in the sleeve of the support mechanism for attaching the probe unit,
Depending on the width of the ship being measured, the spacing between probe units can be determined and the sleeve to be installed can be selected.

11) The vertical support shaft and the horizontal support shaft are made of FRP and have a tubular shape.

(2) The vertical support shaft has a rough surface, and the horizontal support shaft has a smooth surface.

(Example) FIG. 1 shows a state in which the measuring jig of the present invention is set on a ship S. The measuring jig of the present invention is broadly divided into a moving mechanism A that moves the measuring device, a fixing mechanism B that fixes the moving position during measurement, a supporting mechanism C, a float D, and an intensity probe holder E. It consists of a vertical support shaft F and a horizontal support shaft (1), and each mechanism is an assembly type and can be assembled on the deck of the ship S at the time of measurement and then set around the ship S. ing.

As shown in Fig. 4, the moving mechanism A for moving the total 2111I section consists of installing an appropriate number of moving supports 2 supported by handrail posts 1 on the upper deck in the bow and stern direction, and using these to move the ship. &171 It consists of a guide rope 3 stretched horizontally in the caudal direction.

The moving support hardware 2 extends laterally a certain distance from the side, so that when the measuring device is moved in the bow and stern direction of the ship, the longitudinal support shaft F can be maintained at a certain distance from the side. That is, as shown in FIG. 4, a support plate 2a is attached to the base of the handrail post 1 via a mounting plate, and the moving support hardware 2 is attached to this support plate 2a.

The movable support hardware 2 has a structure in which the extension length can be adjusted using a guide pipe 4 and a small-diameter pipe 5 that is extendably inserted into the guide pipe 4. When the predetermined extension length is determined, the stainless steel wire 6 is By tightening the toggle pin 7 attached to the tip, the length of the extension can be fixed.

An elbow guide pipe 8 is fixed to the tip of the small diameter pipe 5 at right angles thereto, and an elbow 9 for guiding the guide rope 3 is attached to the pipe so as to be slidable in the vertical direction. The structure is such that the vertical position can be identified using the attached toggle pin 7. As shown by the imaginary line in Fig. 4 (only the base is shown), the moving structure A can be rotated up and down at the base of the handrail post 1, and the rotation position is fixed using the stainless steel wire 6. This is done by a toggle pin 7 attached to the tip of the .

The vertical support shaft F has a moving cable 10 (
3) on both sides of the upper deck toward the bow or stern and move it along the guide rope 3. Vertical support axis F
As shown in FIG. 6, an L-shaped support plate 13 is attached to a guide case 12 attached via a guide 11. A linear bearing 14 is attached to the F end of this support plate 13, and the bearing is guided by the guide rope 3 and moves smoothly.

Fixing mechanism B fixes the position of the measuring device relative to the ship during measurement, and as shown in Figures 8 and 9, the fixing mechanism B is a support shaft that extends outboard using the gutter coaming 15 on the upper deck. Support hardware 6 and vertical support shaft F attached to its tip
It consists of a holding hardware 17. Support shaft holding hardware 1
7 holds the longitudinal support axis F using air pressure, and fixes the position of the entire apparatus with respect to the ship during measurement using supporting metal fittings 16.

The upper support hardware 6 consists of two arms 16a projecting outboard and a base hardware 16b attached to the gutter coaming 15, and each arm 16a is fixed by an upper top plate 16c hinged to 42 of the base hardware 16b. Ru.

When moving the fixing mechanism B in the bow and stern direction of the ship, the upper top plate 16c is opened and the arm 16 is moved from the base hardware 16b.
Remove a and move it together with the lateral support shaft G at the bottom of the ship.

10 to 11 show details of the holding hardware 17 for the longitudinal support shaft F. The holding hardware 17 has an inner cylinder 20 surrounding the vertical support axis F between the upper lid 18 and the lower flange 19, and a brake tube 2 made of soft vinyl chloride, for example, on the outside thereof.
1 is wound into a spiral. A sleeve 22 is placed on the outside of the spiral tube 21, and an outer cylinder 23 is wrapped around the outside of the sleeve 22. The inner cylinder 20 is circumferentially divided (six pieces in the figure), and springs 24 are attached to the top, bottom, and intermediate positions, which bias the inner cylinder 20 outwardly. The spiral tube 21 outside the inner cylinder 20 is blind at the lower end, but the upper end is connected to an air supply g (compressor) via a connecting pipe 25. A rotating shaft mounting plate 26 is attached to the lower side of the lower flange 19, and the arm 1 is attached to this.
The tip of 6a is attached. The spiral tube 2
1 is supplied with air to inflate it, and the inner cylinder 20 is brought into close contact with and integrated with the vertical support shaft, thereby fixing the support shaft.

The support mechanism C includes a steel part support hardware 27 (Fig. 12) provided at the lower end of the vertical support shaft F and a bellows mechanism 28 (Fig. 13,
Figure 14). The steel part support hardware 27 horizontally supports the horizontal support shaft G (FIG. 15), and when the vertical support shaft F moves in the width direction, it moves via the horizontal support shaft G. It has become. As shown in FIG. 15, the lateral support shaft G is assembled into a single shaft by symmetrically connecting a plurality of members with a plurality of joints.

The bellows mechanism 28 consists of a sleeve 2'la that is movable in the axial direction with respect to the lateral support shaft G, and a bellows arm 30 attached to the sleeve. However, sleeve 2 at the center of the ship
9b is fixed with respect to the horizontal support shaft G, and a plurality of sleeves 29a provided symmetrically to the left and right around this are slidable with respect to the horizontal support shaft G. Among these slidable sleeves, two sleeves 29c and 29d at both end portions are connected to the lower part of the steel part support hardware 27 via a bracket.

As shown in FIGS. 16 to 18, the slidable sleeve 29a has a spline-shaped groove 31 in the center thereof, and an intensity probe holder E is fixed to the intermediate portion. This allows the measurement probe unit (hydrophone unit) to be attached.

If the ship width changes depending on the measurement position, support mechanism C
An endless cable C and a lateral cable a, which will be described later, are equipped on the
When the support mechanism C is moved in the width direction by operating a', b, b', the sleeve 29 attached to the lateral support shaft G
moves on the lateral support axis G via the bellows arm 30. The moved sleeves 29 are always arranged at equal intervals by the bellows arm 30. In other words, the measurement probe units are always arranged at equal intervals even if the width of the ship changes.

Moreover, the longitudinal support axis F is always positioned perpendicularly even when the width changes.

The sleeve 29 has an intensity probe holder E.
A bellows fitting 33 is attached to the outside.

As shown in FIGS. 19 to 21, in the bellows mechanism, a pivot metal fitting 34 is inserted from the end into the intersecting pivot portion of each bellows arm 30, and the metal fittings are rotatably connected by a bellows fitting 33. are doing. In addition, each sleeve 29 has bellows transverse motion chambers a, b (a',
b') hook fixing parts 35 and 36 are provided.

The bellows transverse movement mechanism using cables will be explained with reference to FIGS. 22 and 23. As a bellows lateral movement mechanism, two bellows lateral movement chambers a and b are provided which can be operated on both sides of the deck. 22nd
The transverse cable a on the right side of the figure descends from the sheave unit 37 provided at the upper end of the longitudinal support shaft F, passes through the cable guide 38 provided at the lower part of the longitudinal support shaft F, and then passes through the sheave unit 39 at the lower end of the support shaft. Further, the direction is changed inward in the horizontal direction by a sheave unit 40 provided at the outer end of the lateral support shaft G. Next, approximately 360° with the sheave unit 41 in the middle part
It is redirected and fixed at the end. Another conduction system hangs down from the upper end of the longitudinal support shaft F, passes through the sheave unit 42 at the lower end, and passes through the sleeve on the left side of the center for 360 degrees.
The direction has been changed and it is fixed at the right end like the conduction system a.

On the other hand, the transmission system a' operated on the left deck hangs down from the upper end of the longitudinal support shaft F, and is fixed to the left end after being turned outward by a sheave unit 41' of the lower end sheave unit section. In addition, the left conduction system b' descends from the upper end of the vertical support shaft, changes its direction inward at the lower end sheave unit 43', and then changes its direction by 360° at the right middle sheave unit and returns to the left end. is fixed to.

An endless cable C is wrapped between the sheave units at both left and right ends.

With the above configuration, when the conduction systems a and a' are pulled, the bellows mechanism extends laterally. Also, when the conduction system b' is pulled, the bellows mechanism contracts. Therefore, in order to extend the entire bellows mechanism laterally at the same time, while loosening conduction system b', conduction system a and a
′ can be subtracted. Conversely, to reduce the width, conduction systems a and a'
If we relax the conduction system, we can subtract b'.

In addition, the endless cable C is wrapped between both ends, and the endless cable C
By fixing two points in the middle of the sleeve to the left and right sleeves (reference numeral 44 in FIG. 23), 1) when the bellows mechanism is extended or contracted, the sleeve spacing can be easily equalized;
In addition, 2) each sleeve can be braked during measurement.

The float D has a built-in pneumatic holding mechanism similar to the fixing mechanism B, and when the device is moved in the longitudinal direction, the entire device is held by this float.

Details of the holding mechanism for the float D are shown in FIGS. 24 and 25. The holding mechanism for the float D includes an inner cylinder 47 surrounding the vertical support axis F between the upper M45 and the lower flange 46, and a soft vinyl chloride tube 48, for example, wound spirally around the outside of the inner cylinder 47. A sleeve 49 is placed on the outside of the spiral tube 48, and an outer cylinder 50 is wrapped around the outside of the sleeve 49. The inner cylinder 47 is divided in the circumferential direction (six pieces in Fig. 25).
Springs 51 are installed at the top, bottom and middle positions.

This urges the inner cylinder 47 to move outward.

The spiral tube 48 outside the inner cylinder 47 is blind at the lower end, but the upper end is connected to an air supply source (compressor) via a connecting pipe 52. A float D is attached to the upper lid 45 and the lower flange 46.

The intensity probe holder E (FIG. 16) is a metal fitting for attaching a probe unit (not shown), and is installed in the sleeve of the support mechanism C. Depending on the width of the ship to be measured, determine the installation spacing (measurement spacing in the width direction) of the probe units.

You can choose which sleeve to install. Vertical support axis F
In order to reduce the weight of the device, the lateral support shaft G is made of GFRP and has a tubular shape. In addition, the surface of the vertical support shaft F is roughened to increase the holding force of the fixing mechanism B and the float D, but the surface of the horizontal support shaft G is roughened to ensure smooth movement of the sleeve. has a smooth finish. Each of the vertical support shafts F and the horizontal support shafts G has a length of about 3 m, and is assembled and used in one ship.

(Effects) A moving mechanism that can move the underwater acoustic intensity measurement jig in the bow and stern direction on the deck, and a fixing mechanism that fixes the measuring device in a predetermined position relative to the ship. , a support mechanism for supporting a longitudinal support shaft and a transverse support shaft in positions orthogonal to each other, each having a measuring device;
It consists of a float that keeps the measurement jig 60 degrees above the ground during transportation, and an intensity probe holder that holds the intensity probe for measuring the intensity of ships. It is now possible to move and measure. With this configuration, underwater noise (intensity) emitted from a ship can be easily and accurately measured by operations on the upper deck over a wide range of the bottom and sides of the ship, from the bow to the stern. be able to.

Furthermore, even if the width of the ship changes, the measurement intervals in the width direction of the bottom of the ship can be maintained at equal intervals, making it possible to perform highly accurate measurements.

Furthermore, since the fixed jig is a portable type that can be easily carried on board the vessel to be measured, it can be easily assembled on the upper deck, making the preparation work extremely easy.

[Brief explanation of drawings]

FIG. 1 is an overall view of the intensity measurement jig according to the present invention. FIG. 2 is a view taken along the line nn in FIG. 1. FIG. 3 is a view taken along the line mm in FIG. 1. FIG. 4 is an assembly diagram of the moving mechanism A. FIG. 5 is a plan view of the support part of the moving mechanism A. FIG. 6 is a side view of the vertical support shaft guide. Figure 7 is also a plan view. FIG. 8 is a side view of the fixing mechanism B. FIG. 9 is also a plan view. FIG. 10 is a sectional view of the holding hardware of the fixing mechanism. FIG. 11 is a sectional view taken along line XI-X of FIG. FIG. 12 is a detailed view of the steel part support mechanism. FIG. 13 shows the bellows mechanism. FIG. 14 also shows the reduced state. FIG. 15 is a detailed view of the lateral support shaft. FIG. 16 is a sectional view of one half of the sleeve. FIG. 17 is a sectional view taken along line X■-X■ in FIG. 16. FIG. 18 is also a sectional view taken along line X■-X■. Figure 19 is a detailed view of the bellows arm. FIG. 20 is a view taken along the XX arrow in FIG. 19. FIG. 21 is a view taken along arrow XXI in FIG. 20. FIG. 22 is an installation diagram of the bellows-like moving cord. FIG. 23 is a plan view as well. FIG. 24 is a sectional view of the float mechanism. FIG. 25 is a view taken along arrows xxv-xxv in FIG. 24. In the figure, A is a moving mechanism B is a fixing mechanism C is a support mechanism D is a float E is an intensity probe holder F is a longitudinal support shaft G is a lateral support shaft a, a', b,
b' Endless rope C Endless rope 1 Handrail post
2 Support hardware for movement 2a Support plate 3 Guide rope 4 Guide pipe 5 (Small diameter) Vibro Stainless steel wire 7 Toggle pin 8 Elbow guide pipe 9 Elbow 10 Movement rope ll Guide 12 Guide case 13 Support plate
14 Linear bearing 15 Gutter coaming 16 Support shaft support hardware +6a Arm
16b Base hardware 16c Upper top plate 17 (of support shaft F) holding hardware 18 Upper lid 19 Lower flange 20
Inner cylinder 21 Spiral tube 22
Sleeve 23 Outer cylinder 24 Spring
25 Connecting pipe 26 Rotation shaft mounting plate 27 Steel part support hardware 28 Bellows mechanism 29.29a2
9b Sleeve 30 Bellows arm 31 (spline-like) groove 33 Bellows fitting 34 Pivot hardware 35, 3
6 Hook fixture 37 Sheave unit 38 Cable guides 39, 40, 41, 42 Sheave unit 43 Sheave unit 44 Endless cable fixing part 45 Upper lid 46 Lower flange 47
Inner cylinder 48 Spiral tube 49
Sleeve 5o Outer cylinder 51 Spring
52 Connecting pipe or more

Claims (12)

[Claims] (1) A moving mechanism (A) that can move the measuring device in the bow and stern direction on the deck, a fixing mechanism (B) that fixes the measuring device in a predetermined position relative to the ship, and the measuring device A longitudinal support shaft (F) and a transverse support shaft (G
) in mutually orthogonal positions, a float (D) to keep the measurement jig floating during movement, and an intensity probe to hold the intensity probe for measuring the intensity of ships. 1. An underwater sound intensity measurement jig for a ship, comprising a probe holder (E), which is assembled on the deck, and is movable and measurable on the deck. (2) The movement mechanism (A) is supported by a handrail post on the upper deck, is extendable and retractable, and is supported by the movement support hardware arranged in the bow and stern direction, and is horizontal in the bow and stern direction. The underwater acoustic intensity measuring jig for a ship according to claim 1, characterized in that the jig is comprised of a guide rope stretched to a length of 1. (3) The longitudinal support shaft (F) is configured to move in the bow and stern direction by operating a moving cable provided at its lower end on the deck, and the longitudinal support shaft (F) is equipped with a linear bearing. 2. The underwater sound intensity measuring jig for a ship according to claim 1, further comprising: a supporting plate attached thereto, and said linear bearing sliding guided by said guide rope. (4) The fixing mechanism (B) is attached to the support shaft support metal fitting protruded outboard using the gutter coaming on the deck and its tip, in order to fix the position of the measuring device relative to the ship during measurement. and a holding metal fitting for the vertical support shaft (F), and the holding metal fitting for the support shaft is characterized in that the brake tube is expanded using air pressure to hold the vertical support shaft (F). An underwater sound intensity measuring jig for a ship according to claim (1). (5) The holding hardware has an inner cylinder surrounding the vertical support shaft (F) between the upper lid and the lower flange, and a soft tube is spirally wound around the outside of the inner cylinder, and the outside of the spiral tube is There is a sleeve, and an outer cylinder is wrapped around the outside of the sleeve, and the inner cylinder is divided in the circumferential direction, and springs are installed at upper, lower, and intermediate positions, and are constantly biased outward to separate the sleeve. Claim 4, further characterized in that the front helical tube is connected to an air supply source.
) Underwater sound intensity measurement jig for the vessel described in . (6) The support mechanism (C) is characterized by comprising a steel support metal fitting provided at the lower end of the vertical support shaft (F) and a bellows mechanism attached to the horizontal support shaft (G). Claim (1
) Underwater sound intensity measurement jig for the vessel described in . (7) The steel support hardware supports the horizontal support shaft (G) horizontally, and moves via the horizontal support shaft (G) when the vertical support shaft (F) moves in the width direction. Claim (6), characterized in that the lateral support shaft (G) can be assembled into a single piece by symmetrically connecting a plurality of members with a plurality of joints. A jig for measuring underwater sound intensity on ships. (8) The bellows mechanism consists of a sleeve that can move axially with respect to the lateral support shaft (G) and a bellows arm attached to the sleeve, and the sleeve at the center of the bottom of the ship is axially movable with respect to the lateral support shaft (G). A plurality of sleeves are fixed to the shaft and are provided symmetrically to the left and right around the shaft, and are slidable to the lateral support shaft (G). Of these sleeves, two at both ends 7. The underwater acoustic intensity measuring jig for a ship according to claim 6, wherein the sleeve is connected to the lower part of the steel part support metal fitting via a bracket. (9) a float (D) is provided on the vertical support shaft;
An underwater acoustic instrument for ships, characterized in that it has a built-in pneumatic holding mechanism similar to the fixing mechanism (B), and when the device moves in the bow and stern direction, the entire device is held afloat by the float. City measurement jig. (10) The intensity probe holder (E) is installed on the sleeve of the support mechanism (C) for attaching the probe unit. Depending on the width of the ship to be measured, determine the installation interval of the probe unit and select the sleeve to attach it to. Claim (1) characterized in that:
A jig for measuring underwater acoustic intensity in the vessel described above. (11) Underwater sound intensity measurement in a ship according to claim (1), wherein the longitudinal support shaft (F) and the horizontal support shaft (G) are made of GFRP and have a tubular shape. jig. (12) Underwater acoustics in a ship according to claim (1), wherein the longitudinal support shaft (F) has a roughened surface, and the horizontal support shaft (G) has a smooth surface. Intensity measurement jig.