JP6928542B2 - How to assemble a transmitter / receiver support device for an underwater detector, an underwater detector, and a transmitter / receiver support device for an underwater detector - Google Patents

Description

The present invention mainly relates to a transmitter / receiver support device that supports an transmitter / receiver of an underwater detector so as to be able to move up and down.

A transmitter / receiver support that can conventionally lower a transmitter / receiver used for detecting underwater from a storage tank whose one end opens at the bottom of the ship to project downward, or raise it to be stored in the storage tank. The device is known. This type of transmitter / receiver support device is disclosed in, for example, Patent Documents 1 and 2.

The vertical device of the underwater detection wave transmitter / receiver disclosed in Patent Document 1 is configured to prevent excessive bending of the shaft by providing a tank guide on a shaft supported so as to be movable up and down. .. This tank guide supports the fluid resistance acting on the transmitter / receiver by contacting two or more places including the stern side of the inner surface of the storage tank. Of the support portions of the tank guide, at least the support portion on the stern side is configured as a rotating roller.

The sonar upper / lower device disclosed in Patent Document 2 includes a shock absorber attached to an upper / lower pipe for taking in / out a transmitter / receiver from a storage cylinder. A plurality of rollers that come into contact with the inner wall of the storage cylinder and rotate when moving up and down are provided on the peripheral edge of the shock absorber. At least one of the rollers has a rotating shaft on an arm that can rotate around the supporting shaft. The arm does not rotate when a force perpendicular to the upper and lower pipes is applied to the roller, but rotates up and down when the force of the upper and lower pipe direction components is applied to the roller, and when the force is removed, the arm is the original. It is pressed by an elastic body so that it returns to its position.

Jikkenhei 4-1580 No. Jikkenhei No. 2-122373

In the configuration of Patent Document 1, the roller does not move, and in the configuration of Patent Document 2, the roller at the tip of the movable arm is in a horizontal posture (the roller is located on the outermost side in the radial direction). It is configured to come into contact with the inner wall of the storage tank. Therefore, if there is a gap between the roller and the storage tank due to a dimensional error of the storage tank, etc., it may cause rattling or bending of the vertical axis, making it impossible to move up and down. rice field.

The gap between the roller and the inner wall of the storage tank can be eliminated by adjusting the position of the roller. However, the work of adjusting according to the individual difference in the dimensions of the storage tank is complicated, and the efficiency of the assembly work and the like is greatly reduced.

Further, in the configurations of Patent Documents 1 and 2, for example, in the process of navigating a ship, if a large force is applied in the direction of eccentricity of the vertical axis with respect to the storage tank, the rollers and the like may be damaged. there were. In Patent Document 2, some rollers are supported by the movable arm, but normally the movable arm is held in a horizontal state, so that the movable arm is stretched when an excessive force is applied. Therefore, the force could not be released, and there was a risk that the mechanism such as the movable arm would be broken.

The present invention has been made in view of the above circumstances, and an object of the present invention is that it can be installed without rattling without performing complicated adjustment work, and even if an excessive load is applied to the elevating shaft, the pressing member or the like is damaged. It is an object of the present invention to provide a transmitter / receiver support device for an underwater detector capable of preventing the above-mentioned problems.

Means and effects to solve problems

The problem to be solved by the present invention is as described above, and next, the means for solving this problem and its effect will be described.

According to the first aspect of the present invention, a transmitter / receiver support device for an underwater detector having the following configuration is provided. That is, the transmitter / receiver support device of this underwater detector includes an elevating shaft, a storage tank, a base member, a contact surface, a pressing member, and an elastic member. The elevating shaft can fix the transmitter / receiver of the underwater detector to the end. The storage tank can store the transmitter / receiver inside. The base member moves up and down integrally with the elevating shaft inside the storage tank. The contact surface is arranged on the outer circumference of the base member. The pressing member moves up and down integrally with the elevating shaft inside the storage tank and can move in the radial direction with respect to the elevating shaft, and at least a part thereof is from the contact surface or between the contact surfaces. It can protrude outward in the radial direction. The elastic member generates an elastic force that pushes the pressing member radially outward. The pressing member is arranged at the end of a rotatably supported arm. The arm is rotated by the elastic force of the elastic member.

As a result, even if there are individual differences in the shape of the inner wall of the storage tank, it can be absorbed within the stroke range in which the pressing member moves in the radial direction. be able to. Further, the vibration of the elevating shaft can be suppressed by the elastic force of the elastic member. Further, even when a large load in the eccentric direction is applied to the elevating shaft, the contact surface comes into contact with the inner wall of the storage tank to receive the load, so that damage to the pressing member or the like can be prevented. With a simple configuration, the pressing member can be pressed against the inner wall of the storage tank.

The transmitter / receiver support device of the underwater detector preferably has the following configuration. That is, the arm is rotatably supported via a support shaft. The elastic force of the elastic member acts on a portion of the arm opposite to the pressing member with the support shaft interposed therebetween.

As a result, the configuration in which the pressing member is pressed against the inner wall of the storage tank can be miniaturized.

In the transmitter / receiver support device of the underwater detector, it is preferable that the arm is supported in an inclined posture so as to be upward as it approaches the radial outer side.

As a result, when the base member is formed so as to be narrowed downward, the arm can be comfortably arranged inside the base member.

The transmitter / receiver support device of the underwater detector preferably has the following configuration. That is, a concave portion or a convex portion is formed on the elevating shaft. The transmitter / receiver support device includes a positioning member and a fixing member. The positioning member is arranged so as to surround the outside of the elevating shaft, and a convex portion that meshes with the concave portion or a concave portion that meshes with the convex portion is formed. The fixing member is configured in a loop so as to surround the outside of the positioning member. The base member is fixed to at least one of the positioning member and the fixing member.

Thereby, the positioning member can be first attached to the elevating shaft, the concave portion and the convex portion can be engaged with each other, and the outer side can be surrounded by the fixing member in that state to fix the base member.

In the transmitter / receiver support device of the underwater detector, the positioning member may be rotatable with respect to the elevating shaft and fixed in the axial direction by meshing the concave portion with the convex portion. preferable.

As a result, with the positioning member attached to the elevating shaft, the positioning member is rotated to adjust the orientation while the positioning member does not move in the axial direction with respect to the elevating shaft due to the engagement between the concave portion and the convex portion. Can be done.

The transmitter / receiver support device of the underwater detector preferably has the following configuration. That is, a tapered surface is formed on the positioning member. The fixing member is formed with a tapered guide surface that comes into contact with the tapered surface.

Thereby, the positioning member can be fixed to the elevating shaft by the taper engagement between the positioning member and the fixing member.

The transmitter / receiver support device of the underwater detector preferably has the following configuration. That is, the transmitter / receiver support device includes a screw member for fixing the positioning member and the fixing member. By tightening the screw member, the tapered surface is guided by the tapered guide surface, and the positioning member moves inward with respect to the fixing member.

As a result, the positioning member to which the weight of the base member or the like is applied can be firmly fixed to the elevating shaft by the strong taper engagement generated by the tightening of the screw member.

The transmitter / receiver support device of the underwater detector preferably has the following configuration. That is, each of the plurality of positioning members is provided with a protruding portion protruding in the radial direction. The base member is arranged at a position higher than the protrusion. The fixing member is arranged between the protrusion and the base member.

As a result, since the protruding portion is arranged on the lower side of the base member and the fixing member, it is possible to realize a configuration in which the weight of the base member or the like can be easily received mechanically.

In the transmitter / receiver support device of the underwater detector, the elastic member is preferably a disc spring.

As a result, a strong pressing force can be generated in a compact configuration.

It is preferable that the transmitter / receiver support device of the underwater detector is provided with a pressing release mechanism that retracts the pressing member inward in the radial direction in conjunction with the elevating shaft reaching the upper limit position of the elevating stroke.

As a result, the work of inserting the base member into the storage tank can be easily performed.

In the transmitter / receiver support device of the underwater detector, it is preferable that the elastic member is arranged at the bottom of the base member.

As a result, it is possible to realize a compact transmitter / receiver support device by efficiently using the space.

The transmitter / receiver support device of the underwater detector preferably has the following configuration. That is, the transmitter / receiver support device includes both the contact surface and the pressing member. The contact surface and the pressing member are arranged alternately on the outer periphery of the base member in the circumferential direction.

As a result, damage to the pressing member and the like can be stably prevented regardless of the direction in which the load that eccentrics the elevating shaft is applied.

According to a second aspect of the present invention, there is provided an underwater detector including a transmitter / receiver supported by the transmitter / receiver support device.

As a result, rattling can be reduced and an underwater detection device having excellent durability can be realized.

According to the third aspect of the present invention, the following method of assembling the transmitter / receiver support device of the underwater detector is provided. That is, the transmitter / receiver support device includes an elevating shaft, a storage tank, a base member, a contact surface, a pressing member, an elastic member, a positioning member, and a fixing member. The elevating shaft can fix the transmitter / receiver of the underwater detector to the end. The storage tank can store the transmitter / receiver inside. The base member moves up and down integrally with the elevating shaft inside the storage tank. The contact surface is arranged on the outer circumference of the base member. The pressing member moves up and down integrally with the elevating shaft inside the storage tank and can move in the radial direction with respect to the elevating shaft, and at least a part thereof is from the contact surface or between the contact surfaces. It can protrude outward in the radial direction. The elastic member generates an elastic force that pushes the pressing member radially outward. A plurality of the positioning members are arranged side by side so as to surround the outside of the elevating shaft. The fixing member is configured in a loop so as to surround the outside of the positioning member. In the assembly method, the positioning member is arranged outside the elevating shaft, and the positioning member is engaged with the elevating shaft to regulate the axial movement of the positioning member. The loop-shaped fixing member is arranged so as to surround the outside of the positioning member. The elevating shaft is tightened by the positioning member by taper-engaging the tapered surface formed on the positioning member and the tapered guide surface formed on the fixing member. The base member is fixed to at least one of the positioning member or the fixing member.

As a result, the positioning member can be first attached to the elevating shaft, and the positioning member can be rotated to adjust the orientation without the positioning member moving in the axial direction with respect to the elevating shaft due to the engagement between the concave portion and the convex portion. can. After that, the tapered surface and the tapered guide surface can be tapered and engaged with each other to firmly fix the positioning member to the elevating shaft, and then the base member can be attached with reference to the orientation of the positioning member. This facilitates the work of fixing the base member, which tends to be heavy, to the elevating shaft while matching its mounting orientation. Since a plurality of positioning members are arranged so as to surround the elevating shaft, it becomes easy to evenly tighten the positioning members to the elevating shaft, and it becomes easy to attach each positioning member to the elevating shaft.

The schematic diagram which shows the overall structure of the transmitter / receiver support device which concerns on one Embodiment of this invention. Partial sectional view which shows the structure of the tank guide of 1st Embodiment. A perspective view showing a state in which the tank guide is viewed from above. A perspective view showing the tank guide as viewed from below. A plan sectional view showing a state in which a load in the eccentric direction is not applied to the elevating shaft. FIG. 5 is a plan sectional view showing a state in which the elevating shaft is eccentric from the state of FIG. 5 and the contact surface is in contact with the inner wall of the storage tank. Partial sectional view which shows the structure of the tank guide of 2nd Embodiment. An exploded perspective view showing in detail the configuration for attaching the tank guide to the elevating shaft. A side view showing a ship equipped with an underwater detector.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a side view showing a ship 90 equipped with an underwater detection device 100.

As shown in FIG. 9, the underwater detection device 100 of the present embodiment is provided in a ship 90 such as a fishing boat. The underwater detection device 100 includes a transmitter / receiver 101 that projects downward from the bottom of the ship 90 (ship bottom 90a) toward the water.

The transmitter / receiver 101 includes a plurality of vibrators capable of transmitting / receiving ultrasonic waves. The oscillator of the transmitter / receiver 101 can simultaneously transmit ultrasonic waves to a predetermined azimuth range in water based on a command from a controller (not shown). In addition, the oscillator of the transmitter / receiver 101 can receive as an echo signal a wave reflected by a fish, the seabed, or the like from the transmitted ultrasonic wave.

The transmitter / receiver 101 is suspended from the transmitter / receiver support device 110 included in the underwater detector 100. The transmitter / receiver support device 110 includes a round bar-shaped elevating shaft 11 arranged in the vertical direction, and the transmitter / receiver 101 is fixed to the lower end of the elevating shaft 11.

The elevating shaft 11 is configured to be movable up and down by an elevating mechanism included in the transmitter / receiver support device 110 (details of the elevating mechanism will be described later). With this configuration, when the underwater detector 100 is not used, the transmitter / receiver 101 can be stored above the bottom 90a to reduce the resistance of water during navigation. On the other hand, when the underwater detector 100 is used, ultrasonic waves can be transmitted from the vibrator in various directions by projecting the transmitter / receiver 101 downward from the bottom 90a as shown in FIG.

Next, the configuration of the transmitter / receiver support device 110 according to the embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic view showing the overall configuration of the transmitter / receiver support device 110. In the following, unless otherwise specified, the radial direction and the circumferential direction mean the radial direction and the circumferential direction with reference to the axis of the elevating shaft 11.

In addition to the elevating shaft 11 described above, the transmitter / receiver support device 110 includes a storage tank 12, a gantry mount 13, a gantry frame 14, a drive motor 15, a transmission mechanism 16, and screws, as shown in FIG. A feed shaft 17, an elevating member 18, and a tank guide 19 are provided.

The elevating shaft 11 is a round bar-shaped member, and is formed elongated in the vertical direction. The above-mentioned transmitter / receiver 101 is fixed to the lower end of the elevating shaft 11.

The storage tank 12 is a hollow cylindrical member, and is formed elongated in the vertical direction. The lower end of the storage tank 12 is fixed to the bottom 90a, and the internal space of the storage tank 12 forms an opening on the lower surface of the bottom 90a.

An elevating shaft 11 can be passed through the inside of the storage tank 12. Further, the inner diameter of the storage tank 12 is formed to be slightly larger than the outer diameter of the transmitter / receiver 101, and the transmitter / receiver 101 can be stored inside the retractable shaft 11 when the elevating shaft 11 is raised.

The gantry 13 is fixed to the upper end of the storage tank 12. A through hole in the vertical direction is formed in the gantry mount 13, and the elevating shaft 11 is slidably supported in the vertical direction (longitudinal direction of the elevating shaft 11) in the through hole.

The gantry frame 14 is a member elongated in the vertical direction and is fixed to the upper surface of the gantry mount 13.

The drive motor 15 is configured as an electric motor capable of rotationally driving the screw feed shaft 17 in both directions. The drive motor 15 is fixed to the upper part of the gantry frame 14.

The transmission mechanism 16 is configured as a drive transmission mechanism including, for example, a gear or the like. The transmission mechanism 16 can transmit the rotation of the output shaft of the drive motor 15 to the screw feed shaft 17 to rotate the screw feed shaft 17.

The screw feed shaft 17 is rotatably supported by the gantry frame 14 with its longitudinal direction facing up and down. The screw feed shaft 17 is arranged in parallel with the elevating shaft 11.

The elevating member 18 is screw-coupled to the screw feed shaft 17, and moves in the vertical direction according to the rotation of the screw feed shaft 17. The elevating member 18 is fixed to the upper end of the elevating shaft 11.

The tank guide 19 is fixed to the inside of the storage tank 12 in the middle of the elevating shaft 11 in the longitudinal direction. A vibration damping mechanism for reducing the vibration of the elevating shaft 11 is arranged in the tank guide 19. The details of the tank guide 19 and the vibration damping mechanism will be described later.

With the above configuration, by driving the drive motor 15 and rotating the screw feed shaft 17 to one side, the elevating member 18 and the elevating shaft 11 are raised, and the transmitter / receiver 101 is moved as shown by the chain line in FIG. It can be stored above the bottom 90a. On the other hand, by rotating the screw feed shaft 17 to the opposite side, the elevating member 18 and the elevating shaft 11 can be lowered, and the transmitter / receiver 101 can be projected downward from the bottom 90a as shown by the solid line in FIG. .. As described above, the drive motor 15, the transmission mechanism 16, the screw feed shaft 17, and the elevating member 18 form an elevating mechanism that moves the transmitter / receiver 101 up and down together with the elevating shaft 11.

Next, the tank guide 19 will be described in detail with reference to FIGS. 2 and 3. FIG. 2 is a partial cross-sectional view showing the configuration of the tank guide 19. FIG. 3 is a perspective view showing a state in which the tank guide 19 is viewed from above.

As shown in FIG. 2 and the like, the tank guide 19 includes a housing (base member) 21, a disc spring (elastic member) 22, a piston 23, a transmission arm (arm, link member) 24, and a roller (pressing member). 25 and a contact plate 26 are provided.

The housing 21 is made of iron or the like and is configured as a member such as a truncated cone that is turned upside down. The housing 21 is formed in a hollow shape with an open upper portion, and a pressing mechanism or the like, which will be described later, is arranged inside the housing 21.

As shown on the right side of FIG. 2, a shaft hole in the vertical direction is formed in a through shape in the central portion of the housing 21. The inner peripheral surface of this shaft hole is formed in a tapered shape.

The housing 21 is fixed to the elevating shaft 11 by the fixing collar 41. Specifically, the fixed collar 41 has a conical tapered portion corresponding to the shaft hole. By fixing the fixing collar 41 to the housing 21 with a fixing member (specifically, a bolt) shown in the drawing with the tapered portion inserted into the shaft hole, the fixing collar 41 moves the elevating shaft 11 by the action of a wedge. By tightening, the housing 21 can be fixed so as not to move with respect to the elevating shaft 11. As a result, the tank guide 19 can be moved up and down integrally with the elevating shaft 11.

The disc spring 22, the piston 23, the transmission arm 24, and the roller 25 form a pressing mechanism that presses the inner wall of the storage tank 12 radially outward. Most of this pressing mechanism is housed in the internal space of the housing 21. In the present embodiment, five pressing mechanisms having the same configuration are arranged in the tank guide 19, but one of them will be described as a representative in the following description.

The disc spring 22 is arranged at the bottom of the internal space of the housing 21, for example, as shown on the right side of FIG. The expansion and contraction direction of the disc spring 22 is tilted so as to be inward in the radial direction as it goes upward. A plurality of disc springs 22 are arranged side by side along the above-mentioned expansion and contraction direction.

The piston 23 is arranged on the side opposite to the bottom of the housing 21 with the disc spring 22 interposed therebetween. The piston 23 receives the force of the disc spring 22 and can contact the end of the transmission arm 24 to apply the force.

The transmission arm 24 is configured as an elongated member and is arranged along the radial direction in a plan view. The longitudinal portion of the transmission arm 24 is rotatably supported by the housing 21 via a horizontally arranged support shaft 24a. The transmission arm 24 is in an inclined posture so as to be upward as it approaches the outer side in the radial direction.

A disc spring 22 and a piston 23 are arranged between the end of the transmission arm 24 on the side close to the elevating shaft 11 and the bottom of the housing 21.

In the vicinity of the end of the transmission arm 24 on the side far from the elevating shaft 11, the housing 21 is formed with a through hole 21a penetrating in the radial direction. The through hole 21a forms a passage space through which the transmission arm 24 and the roller 25 can pass.

The roller 25 is rotatably supported at the end of the transmission arm 24 on the side far from the elevating shaft 11 about a horizontal rotation shaft. The roller 25 is inserted into the through hole 21a and can project radially outward from the through hole 21a.

In this configuration, the disc spring 22 in the compressed state pushes up the end portion of the transmission arm 24 via the piston 23 by its elastic force. As a result, the transmission arm 24 rotates, so that the roller 25 is pressed outward in the radial direction (in other words, in a direction away from the elevating shaft 11). In this way, the pressing mechanism can push the inner wall of the storage tank 12 by the roller 25.

As shown in FIG. 3 and the like, five of the above-mentioned pressing mechanisms are arranged side by side at equal intervals in the circumferential direction of the tank guide 19. Therefore, the tank guide 19 radially presses five points on the inner wall of the storage tank 12 by five pressing mechanisms (in other words, the roller 25).

In this configuration, when the elevating shaft 11 vibrates so as to be eccentric with respect to the storage tank 12 for some reason such as a vortex acting on the transmitter / receiver 101, it comes into contact with the storage tank 12 in any of the pressing mechanisms. Vibration is transmitted from the roller 25 to the disc spring 22 via the transmission arm 24 and the piston 23, and the vibration is absorbed by the disc spring 22. Therefore, the vibration generated in the elevating shaft 11 and the transmitter / receiver 101 can be reduced. In the present embodiment, the vibration damping mechanism is composed of the above five pressing mechanisms.

In the present embodiment, the rotation of the transmission arm 24 realizes the movement of the roller 25 in the radial direction. As a result, the elastic force of the disc spring 22 can be transmitted to the roller 25 with a simple structure, and the roller 25 can be pressed against the inner wall of the storage tank 12. Further, the elastic force of the disc spring 22 acts on the portion of the transmission arm 24 opposite to the roller 25 with the support shaft 24a interposed therebetween. Therefore, the configuration of the pressing mechanism can be miniaturized.

In particular, as shown on the right side of FIG. 2, when the roller 25 is in contact with the inner wall of the storage tank 12, the transmission arm 24 is tilted to some extent from the horizontal state. Therefore, even if the inner wall of the storage tank 12 has small irregularities, when the tank guide 19 is moved up and down together with the transmitter / receiver 101 and the elevating shaft 11, the roller 25 smoothly passes through the irregularities due to the rotation of the transmission arm 24. Can be done. As a result, it is possible to prevent catching when ascending and descending. Further, since the transmission arm 24 is supported in an inclined posture so as to be upward as it approaches the outer side in the radial direction, when the housing 21 is formed so as to be narrowed downward as shown in FIG. The transmission arm 24 can be arranged so as to fit well.

Next, the contact plate 26 will be described. FIG. 4 is a perspective view showing a state in which the tank guide is viewed from below. FIG. 5 is a plan sectional view showing a state in which a load in the eccentric direction is not applied to the elevating shaft 11. FIG. 6 is a plan sectional view showing a state in which the elevating shaft 11 is eccentric from the state of FIG. 5 and the contact surface 26a is in contact with the inner wall of the storage tank 12.

The contact plate 26 is formed as an arc-shaped plate formed of synthetic resin, and is fixed to the outer peripheral surface of the tank guide 19 as shown in FIG. 4 and the like. The outer surface (contact surface 26a) of the contact plate 26 can face the inner wall of the storage tank 12 in the radial direction.

As shown in FIG. 3 and the like, the contact plates 26 are arranged side by side in the circumferential direction of the tank guide 19 at equal intervals in the same number as the pressing mechanism (specifically, five). Contact plates 26 and rollers 25 protruding from the through holes 21a are arranged alternately on the outer periphery of the housing 21 in the circumferential direction.

By the way, in the above-mentioned pressing mechanism, the rotation range of the transmission arm 24 is defined so that the roller 25 can project radially outward from between the contact surfaces 26a of the contact plate 26. Therefore, normally, as shown in FIG. 5, all of the five contact plates 26 face the inner wall of the storage tank 12 with a small gap. In the state of FIG. 5, the vibration generated in the elevating shaft 11 and the transmitter / receiver 101 is reduced as described above by the vibration damping mechanism including the five pressing mechanisms.

However, when the ship 90 is navigated while using the underwater detector 100, a large load may be applied to the elevating shaft 11 due to contact of foreign matter in the water with the transmitter / receiver 101.

In this respect, in the present embodiment, when the elevating shaft 11 is displaced relatively large, the contact plate 26 comes into direct contact with the inner wall of the storage tank 12 as shown in FIG. Can be taken into account. FIG. 6 shows an example in which a large load in the direction of eccentricity is applied to the elevating shaft 11 in the direction of the thick arrow, and the contact plate 26 located in the direction to be eccentric comes into contact with the inner wall of the storage tank 12. You can see that you are doing it. This makes it possible to prevent damage to the pressing mechanism (belleville spring 22, piston 23, transmission arm 24, roller 25, etc.).

The amount of eccentricity of the elevating shaft 11 when the contact plate 26 and the inner wall of the storage tank 12 come into contact with each other is determined by the size of the gap between the contact plate 26 and the inner wall of the storage tank 12 in the state of FIG. By setting this gap sufficiently small, the load can be supported by the contact plate 26 before a large plastic deformation of bending occurs in the elevating shaft 11 in the vicinity of the gantry mount 13.

As described above, a plurality of contact plates 26 are provided side by side in the circumferential direction. Further, the contact plates 26 are arranged at equal intervals so as to cover 360 ° of the outer circumference of the tank guide 19, and the contact surfaces 26a and the rollers 25 are arranged alternately on the outer circumference of the housing 21 in the circumferential direction. There is. Therefore, even if the elevating shaft 11 tries to be eccentric in any direction, any of the contact plates 26 comes into contact with the inner wall of the storage tank 12, and damage to the rollers 25 and the like can be stably prevented.

When the ship 90 is navigated with the transmitter / receiver 101 and the elevating shaft 11 protruding into the water, it is conceivable that a very large load in the eccentric direction acts on the elevating shaft 11. In this case, the elevating shaft 11 It is inevitable that 11 will bend. However, even in this case, the elevating shaft 11 is bent not at the portion of the gantry mount 13 but at the portion of the tank guide 19. Therefore, even when the elevating shaft 11 is bent, in most cases, the transmitter / receiver 101 can be pulled up to some extent together with the elevating shaft 11 by driving the drive motor 15.

If the elevating shaft 11 is bent at the portion of the gantry mount 13, it becomes impossible to raise the elevating shaft 11, and the state in which a long object protrudes downward from the bottom 90a cannot be resolved. Therefore, it becomes extremely difficult to land the ship 90. However, in the present embodiment, such a situation can be prevented, so that the maintainability can be greatly improved.

The five pressing mechanisms provided in the tank guide 19 operate independently of each other, but if the forces of the five rollers 25 pressing the inner wall of the storage tank 12 are imbalanced, the elevating shaft 11 is eccentric. Will end up. In this respect, in the present embodiment, the roller 25 of the pressing mechanism is configured to press the inner wall of the storage tank 12 by the elastic force of the disc spring 22. Then, by using a disc spring 22 having a spring characteristic that the increase in elastic force reaches a plateau when the amount of compression increases to some extent, it is possible to easily balance the pressing force generated by the roller 25 of the pressing mechanism. ..

Further, in the present embodiment, since the roller 25 is pressed against the inner wall of the storage tank 12 by the disc spring 22, a strong pressing force can be obtained with a compact configuration. Further, since the disc spring 22 is arranged at the bottom of the housing 21, the internal space of the housing 21 can be efficiently used.

As shown in FIGS. 2 and 4, a plurality of recesses 21b are formed at equal intervals in the circumferential direction on the outside of the housing 21 at positions corresponding to the transmission arms 24 of the pressing mechanism arranged radially. There is. The recess 21b can effectively increase the rigidity of the housing 21. Further, inside each of the recesses 21b, a sacrificial anode (not shown) made of zinc or the like is arranged in order to prevent corrosion of the housing 21 by seawater. As a result, a compact configuration is realized as a whole.

Next, with reference to FIG. 1, the pressing release mechanism 31 included in the transmitter / receiver support device 110 will be described. The pressing release mechanism 31 is configured to be able to forcibly release the pressing by the roller 25.

Specifically, as shown in FIG. 1, a protrusion 13a that projects downward inside the storage tank 12 is formed on the lower surface of the gantry mount 13. The protrusion 13a is formed in an annular shape so as to surround the elevating shaft 11.

In this configuration, when the elevating shaft 11 reaches the upper limit position of the elevating stroke as shown by the chain line in FIG. The radial inner end of the arm 24 is pushed down against the disc spring 22. As a result, the protrusions 13a can simultaneously rotate the transmission arms 24 of the five pressing mechanisms to forcibly retract the rollers 25 inward in the radial direction. With this configuration, for example, when assembling the transmitter / receiver support device 110, the work of inserting the tank guide 19 into the storage tank 12 becomes easy.

As described above, the transmitter / receiver support device 110 of the present embodiment includes an elevating shaft 11, a storage tank 12, a housing 21, a contact surface 26a, a roller 25, and a disc spring 22. The elevating shaft 11 can fix the transmitter / receiver 101 of the underwater detector 100 to the end portion. The storage tank 12 can store the transmitter / receiver 101 inside. The housing 21 moves up and down integrally with the elevating shaft 11 inside the storage tank 12. The contact surface 26a is arranged on the outer periphery of the housing 21. The roller 25 moves up and down integrally with the elevating shaft 11 inside the storage tank 12 and can move in the radial direction with respect to the elevating shaft 11, and at least a part of the roller 25 can project radially outward from between the contact surfaces 26a. Is. The disc spring 22 generates an elastic force that pushes the roller 25 outward in the radial direction.

As a result, even if there are individual differences in the shape of the inner wall of the storage tank 12, the rollers 25 can be absorbed within the range of the stroke that moves in the radial direction, so that the installation can be performed without rattling without complicated adjustment work. can do. Further, the elastic force of the disc spring 22 can suppress the vibration of the elevating shaft 11, and the durability of the underwater detection device 100 can be enhanced. Further, even when a large load in the eccentric direction is applied to the elevating shaft 11, the contact surface 26a comes into contact with the inner wall of the storage tank 12 to receive the load, so that damage to the rollers 25 and the like can be prevented.

Next, a second embodiment of the present invention will be described. FIG. 7 is a partial cross-sectional view showing the configuration of the tank guide 19 according to the second embodiment. FIG. 8 is an exploded perspective view showing in detail the configuration for attaching the tank guide 19 to the elevating shaft 11. In the description of the present embodiment, the same or similar members as those in the above-described embodiment may be designated by the same reference numerals in the drawings, and the description may be omitted.

In the present embodiment, as shown in FIGS. 7 and 8, the housing 21 constituting the tank guide 19 includes two split collars (positioning members) 51, one fixing ring (fixing member) 52, and a plurality of bolts. It is fixed to the elevating shaft 11 by a fixing structure including (screw member) 53. The present embodiment is the same as that of the first embodiment described above, except that the tank guide 19 is attached so as to move up and down integrally with the elevating shaft 11.

The two divided collars 51 have the same shape as each other, and are arranged side by side in the circumferential direction so as to surround the outer periphery of the elevating shaft 11. Each of the divided collars 51 includes a shaft tightening portion 56 and a flange portion (protruding portion) 57.

The shaft tightening portion 56 is formed in a shape in which a cylinder having an inner diameter substantially equal to the outer diameter of the elevating shaft 11 is equally divided into two in the circumferential direction. Most of the shaft tightening portion 56 except the lower end is housed inside the housing 21. A regulation protrusion (convex portion) 62 extending in the circumferential direction is formed on the inner wall of the semi-cylindrical shaft tightening portion 56. The regulation protrusion 62 is an arc-shaped protrusion, and is arranged in the middle portion in the axial direction of the division collar 51.

A ring-shaped groove (recess) 61 is formed at a position where the tank guide 19 is attached in the middle portion of the elevating shaft 11 in the longitudinal direction. A regulation protrusion 62 formed on the split collar 51 can be inserted into the groove 61. By attaching the split collar 51 to the elevating shaft 11 so that the groove 61 and the regulating protrusion 62 mesh with each other, the split collar 51 can be regulated so as not to move in the axial direction with respect to the elevating shaft 11.

As shown in FIG. 7, a conical tapered surface 66 is formed on the outer peripheral surface of the shaft tightening portion 56 and in the vicinity of the flange portion 57, which increases in diameter as it approaches downward. The tapered surface 66 can be tapered and engaged with the tapered guide surface 67 formed on the fixing ring 52, which will be described later.

As shown in FIG. 8, the flange portion 57 is integrally formed with the shaft tightening portion 56 so as to project radially outward from the lower end portion of the shaft tightening portion 56. The collar portion 57 is located below the lower end portion of the housing 21. The collar portion 57 is formed in an arc plate shape so that the thickness direction thereof is parallel to the axial direction. The flange portion 57 is formed with a plurality of fixing holes 68 and a plurality of disengagement screw holes 69 alternately arranged in the circumferential direction. Both the fixing hole 68 and the disengagement screw hole 69 penetrate the flange portion 57 in the axial direction.

The fixing hole 68 is for attaching the split collar 51 to the fixing ring 52 and the housing 21, and the shaft portion of the bolt 53 can be inserted into the fixing hole 68. The disengagement screw hole 69 is for easily disengaging the taper engagement between the split collar 51 and the fixing ring 52 when the housing 21 is removed from the elevating shaft 11 for maintenance or the like. A female screw (not shown) into which a jack-up bolt (not shown) can be screwed is formed on the inner wall of the disengagement screw hole 69. No female screw is formed in the fixing hole 68.

The fixing ring 52 is located outside the elevating shaft 11 and outside the shaft tightening portion 56 of the split collar 51. The fixing ring 52 is configured as a plate-shaped member whose thickness direction is parallel to the axial direction. The fixing ring 52 is formed in an annular shape (loop shape), and is arranged so as to surround the outer circumference of the elevating shaft 11 (shaft tightening portion 56).

A conical tapered guide surface 67 is formed on the inner peripheral surface of the fixing ring 52. The tapered guide surface 67 is formed so as to have a larger diameter as it approaches downward, corresponding to the tapered surface 66 of the divided collar 51. The tapered guide surface 67 can come into contact with the tapered surface 66 on the radial outer side of the tapered surface 66.

The fixing ring 52 is arranged above the collar portion 57 included in the split collar 51, and faces the collar portion 57 in the axial direction. A plurality of mounting holes 71 are formed side by side in the circumferential direction in the annular fixing ring 52. The shaft portion of the bolt 53 can be inserted into each mounting hole 71. The interval at which the mounting holes 71 are formed coincides with the interval at which the fixing holes 68 are formed at the flange portion 57. The fixing ring 52 is not formed with a hole corresponding to the disengagement screw hole 69 of the flange portion 57.

On the lower surface of the housing 21, a plurality of screw holes 72 are formed side by side in the circumferential direction around the central opening. The orientation of each screw hole 72 is parallel to the axial direction of the elevating shaft 11. Each screw hole 72 is formed with a female screw into which the shaft portion of the bolt 53 can be screwed. The position of the screw hole 72 in the housing 21 corresponds to the position of the fixing hole 68 in the flange portion 57, similarly to the mounting hole 71 of the fixing ring 52.

Next, in the process of assembling the transmitter / receiver support device 110, the work of attaching the tank guide 19 to the elevating shaft 11 will be described. This work is performed with the elevating shaft 11 removed from the transmitter / receiver support device 110.

The operator first arranges the two split collars 51 around the elevating shaft 11. At this time, the mounting position of the split collar 51 with respect to the lift shaft 11 is aligned so that the regulation protrusions 62 of the two split collars 51 are inserted into the groove 61 of the lift shaft 11. Since the split collar 51 has a shape divided into two in the circumferential direction, it can be attached to the lift shaft 11 simply by inserting the two split collars 51 from the radial outside of the lift shaft 11 and aligning them with each other. It can be done and workability is good.

In this state, since the regulation protrusion 62 is caught in the groove 61, the axial movement of the split collar 51 is restricted. Therefore, even if the operator does not support it by hand, the split collar 51 and the fixing ring 52 do not descend by their own weight, and can maintain the axial position with respect to the elevating shaft 11.

However, the groove 61 is formed over the outer circumference of the elevating shaft 11 over 360 °. Therefore, in a state where the two split collars 51 are simply attached to the elevating shaft 11, the split collar 51 can be easily rotated with respect to the elevating shaft 11 by manually applying a force in the circumferential direction. .. In this temporarily fixed state, the operator adjusts the mounting direction of the split collar 51 with respect to the elevating shaft 11.

After aligning the split collar 51 in the desired orientation, the operator passes the hole of the fixing ring 52 through the upper end of the elevating shaft 11 and fixes the split collar 51 so that the shaft tightening portion 56 is inserted into the hole of the fixing ring 52. Lower the ring 52. Subsequently, the operator manually pushes down the fixing ring 52 so as to bring it closer to the flange portion 57 in a state where the taper guide surface 67 of the fixing ring 52 is in contact with the tapered surface 66 of the split collar 51, and a slight taper engagement is performed. To do. At this time, the orientation in which the fixing ring 52 is attached to the dividing collar 51 is aligned so that the position of the mounting hole 71 of the fixing ring 52 and the position of the fixing hole 68 of the dividing collar 51 coincide with each other.

As a result, the two split collars 51 lightly tighten the elevating shaft 11, so that the split collar 51 and the fixing ring 52 can be stopped from rotating with respect to the elevating shaft 11 by frictional coupling.

In the process of tapering the split collar 51 and the fixing ring 52, the split collar 51 rotates due to reasons such as the operator applying rotation when pushing down the fixing ring 52, and the split collar 51 is displaced from the desired direction. It is also possible that it will end up. However, in the present embodiment, even in this case, the operator pushes up the fixing ring 52 by hand to release the taper engagement, thereby releasing the rotation stop and re-adjusting the direction of the split collar 51. Can be done. Although the details will be described later, since the fixing ring 52 is extremely lighter than the tank guide 19 and the like, it is easy to push up the fixing ring 52 before assembling the tank guide 19.

Next, the operator passes the shaft hole of the tank guide 19 through the upper end of the elevating shaft 11, and lowers the tank guide 19 so that the shaft tightening portion 56 of the split collar 51 is inserted into the shaft hole of the tank guide 19. At this time, the tank guide 19 is appropriately rotated so as to be aligned with the predetermined orientation with reference to the orientation of the split collar 51.

In this state, the operator passes the bolt 53 through each of the fixing holes 68 formed in the flange portion 57 of the split collar 51 from the lower side, and further passes the mounting hole 71 of the fixing ring 52, and the tank guide 19 ( It is screwed into the screw hole 72 of the housing 21). By the above method, the tank guide 19 can be fixed to the split collar 51 and the fixing ring 52.

In the process of rotating each bolt 53, the fixing ring 52 is strongly pushed downward by the screw-fed tank guide 19, so that the degree of taper engagement between the tapered surface 66 and the tapered guide surface 67 is significantly increased. The two split collars 51 strongly tighten the elevating shaft 11. Due to the frictional coupling generated by this, the housing 21 of the tank guide 19 can be fixed so as not to rotate with respect to the elevating shaft 11.

As described above, in the present embodiment, when assembling the transmitter / receiver support device, the mounting direction of the split collar 51 with respect to the elevating shaft 11 is accurately aligned in advance, and then the orientation is aligned with the split collar 51 to guide the tank guide. The tank guide 19 can be fixed to the elevating shaft 11 by the procedure of attaching the 19. The weight of the tank guide 19 can be as much as 100 kilograms or more, but the split collar 51 and the fixing ring 52 are significantly lighter than the tank guide 19. Therefore, in the present embodiment, the work of attaching the tank guide 19 to the elevating shaft 11 in the correct direction is extremely easy as compared with the configuration in which the tank guide 19 and the elevating shaft 11 are directly tapered and engaged. Can be done.

When it is desired to remove the tank guide 19 from the elevating shaft 11, it is convenient to use the disengagement screw hole 69. That is, after loosening and removing all the bolts 53, the operator screwes the jack-up bolts (not shown) into the respective disengagement screw holes 69 from below and rotates them to rotate the jack-up bolts at the tip of the jack-up bolts. The fixing ring 52 is pushed up with respect to the split collar 51. As a result, the taper engagement between the taper surface 66 and the taper guide surface 67 can be released, and the fixing ring 52 can be separated from the split collar 51. After that, the tank guide 19 and the fixing ring 52 may be pulled out upward from the elevating shaft 11 in this order.

Although the preferred embodiment of the present invention has been described above, the above configuration can be changed as follows, for example.

The number of pressing mechanisms provided in the tank guide 19 is arbitrary, but is preferably a plurality. Further, it is preferable to use an odd number of pressing mechanisms such as 3, 5, and 7 and arrange them at equal intervals in the circumferential direction in that the pressing force can be easily balanced.

The contact surface 26a may be arranged so as to surround each through hole 21a formed in the housing 21, for example. Further, instead of arranging a plurality of contact plates 26 at intervals as in the above embodiment, a ring-shaped contact member formed over 360 ° is fixed to the outer periphery of the housing 21 to form the contact member. The entire outer peripheral surface may be configured to function as a contact surface. In this case, the ring-shaped contact member is preferably arranged on both the upper side and the lower side of the portion where the roller 25 protrudes from the housing 21, but it may be arranged only on either the upper side or the lower side. good.

The contact plate 26 can be omitted and the outer peripheral surface of the housing 21 can be changed to function as a contact surface that comes into direct contact with the storage tank 12.

Instead of the configuration in which the transmission arm 24 rotates, the roller 25 can be configured to move in the radial direction with respect to the elevating shaft 11 by sliding and moving in the radial direction. In this case, the elastic member may be configured to apply an elastic force in the direction of sliding the transmission arm outward in the radial direction to the transmission arm. For example, it is conceivable to arrange a compression spring such as the disc spring 22 inside the transmission arm in the radial direction.

Instead of the through hole 21a, a notch having an open shape may be formed in the housing 21 so that the roller 25 projects radially outward through the notch.

Instead of the roller 25, for example, a block-shaped member (shoe) capable of sliding with respect to the storage tank 12 can be used as the pressing member.

The expansion / contraction direction of the disc spring 22 may be arranged in parallel with the elevating shaft 11 instead of being arranged at an angle as shown in FIG.

Instead of the disc spring 22, another type of spring such as a coil spring can be used, or an elastic member (for example, rubber) other than the spring can be used.

The pressing release mechanism 31 may be omitted.

Instead of the configuration in which the elevating shaft 11 is raised and lowered by rotating the screw feed shaft 17 by the drive motor 15, the configuration may be changed to, for example, a cylinder.

In the second embodiment shown in FIGS. 7 and 8, the division collar 51 may be configured to be divided into three or more instead of the shape in which the outer circumference of the elevating shaft 11 is divided into two. In this case, the number of divided colors is 3 or more.

Instead of forming the annular groove 61 on the elevating shaft 11, an annular protrusion may be formed. In this case, an arcuate groove that meshes with the protrusion may be formed on the inner wall of the shaft tightening portion 56 of the split collar 51.

Another is a screw member that taper engages the fixing ring 52 with the split collar 51 and a fixing member that fixes the tank guide 19 (housing 21) to either or both of the split collar 51 and the fixing ring 52. It may be used as a part.

The elevating shaft 11 may be formed in a hollow shape instead of the solid shape.

11 Lifting shaft 12 Storage tank 21 Housing (base member)
22 Belleville spring (elastic member)
24 Transmission arm (arm)
24a Support shaft 25 Roller (pressing member)
26a Contact surface 31 Press release mechanism

Claims (14)

An elevating shaft that can fix the transmitter / receiver of the underwater detector to the end,
A storage tank that can store the transmitter / receiver inside,
A base member that moves up and down integrally with the lifting shaft inside the storage tank,
With the contact surface arranged on the outer circumference of the base member,
It can be moved up and down integrally with the elevating shaft inside the storage tank and can be moved in the radial direction with respect to the elevating shaft, and at least a part thereof protrudes radially outward from the contact surface or between the contact surfaces. With possible pressing members
An elastic member that generates an elastic force that presses the pressing member radially outward, and an elastic member.
Equipped with a,
The pressing member is arranged at the end of a rotatably supported arm.
A transmitter / receiver support device for an underwater detector, wherein the arm is rotated by an elastic force of the elastic member. The transmitter / receiver support device of the underwater detector according to claim 1.
The arm is rotatably supported via a support shaft and is supported.
A transmitter / receiver support device of an underwater detector, wherein the elastic force of the elastic member acts on a portion of the arm opposite to the pressing member with the support shaft interposed therebetween. The transmitter / receiver support device of the underwater detector according to claim 1 or 2.
A transmitter / receiver support device for an underwater detector, wherein the arm is supported in an inclined posture so that it becomes upward as it approaches the outer side in the radial direction. The transmitter / receiver support device for the underwater detector according to any one of claims 1 to 3.
A concave portion or a convex portion is formed on the elevating shaft, and the elevating shaft has a concave portion or a convex portion.
A positioning member that is arranged so as to surround the outside of the elevating shaft and has a convex portion that meshes with the concave portion or a concave portion that meshes with the convex portion.
A fixing member formed in a loop so as to surround the outside of the positioning member, and
With
The base member is a transmitter / receiver support device of an underwater detector, characterized in that the base member is fixed to at least one of the positioning member and the fixing member. The transmitter / receiver support device of the underwater detector according to claim 4.
A transmitter / receiver support device for an underwater detector, wherein the positioning member is rotatable with respect to the elevating shaft and is fixed in the axial direction by engaging the concave portion and the convex portion. The transmitter / receiver support device of the underwater detector according to claim 4 or 5.
A tapered surface is formed on the positioning member.
A transmitter / receiver support device for an underwater detector, wherein the fixing member is formed with a tapered guide surface that comes into contact with the tapered surface. The transmitter / receiver support device of the underwater detector according to claim 6.
A screw member for fixing the positioning member and the fixing member is provided.
A transmitter / receiver support device for an underwater detector, wherein the tapered surface is guided by the tapered guide surface by tightening the screw member, and the positioning member moves inward with respect to the fixing member. The transmitter / receiver support device for the underwater detector according to any one of claims 4 to 7.
Each of the plurality of positioning members is provided with a protruding portion protruding in the radial direction.
The base member is arranged at a position higher than the protrusion.
A transmitter / receiver support device for an underwater detector, wherein the fixing member is arranged between the protrusion and the base member. The transmitter / receiver support device for the underwater detector according to any one of claims 1 to 8.
A transmitter / receiver support device for an underwater detector, wherein the elastic member is a disc spring. The transmitter / receiver support device for the underwater detector according to any one of claims 1 to 9.
A transmitter / receiver support device for an underwater detector, comprising a pressing release mechanism that retracts the pressing member inward in the radial direction in conjunction with the elevating shaft reaching the upper limit position of the elevating stroke. The transmitter / receiver support device for the underwater detector according to any one of claims 1 to 10.
A transmitter / receiver support device for an underwater detector, wherein the elastic member is arranged at the bottom of the base member. The transmitter / receiver support device for the underwater detector according to any one of claims 1 to 11.
A plurality of the contact surface and the pressing member are provided.
A transmitter / receiver support device for an underwater detector, wherein the contact surface and the pressing member are arranged alternately on the outer periphery of the base member in the circumferential direction. An underwater detector comprising a transmitter / receiver supported by the transmitter / receiver support device of the underwater detector according to any one of claims 1 to 12. An elevating shaft that can fix the transmitter / receiver of the underwater detector to the end,
A storage tank that can store the transmitter / receiver inside,
A base member that moves up and down integrally with the lifting shaft inside the storage tank,
With the contact surface arranged on the outer circumference of the base member,
It can be moved up and down integrally with the elevating shaft inside the storage tank and can be moved in the radial direction with respect to the elevating shaft, and at least a part thereof protrudes radially outward from the contact surface or between the contact surfaces. With possible pressing members
An elastic member that generates an elastic force that presses the pressing member radially outward, and an elastic member.
A plurality of positioning members arranged side by side so as to surround the outside of the elevating shaft, and
A fixing member formed in a loop so as to surround the outside of the positioning member, and
It is a method of assembling a transmitter / receiver support device of an underwater detector equipped with
By arranging the positioning member on the outside of the elevating shaft and engaging the positioning member with the elevating shaft, the movement of the positioning member in the axial direction is restricted.
A fixing member configured in a loop shape is arranged so as to surround the outside of the positioning member.
By engaging the tapered surface formed on the positioning member and the tapered guide surface formed on the fixing member in a taper manner, the positioning member is tightened with the elevating shaft.
A method for assembling a transmitter / receiver support device of an underwater detector, which comprises fixing the base member to at least one of the positioning member or the fixing member.

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