JP2007284990A - Attachment for removing object adhered to sea baserock and device for removing object adhered to sea baserock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attachment for removing an object adhered to a sea baserock for a back hoe capable of removing lime, algae, etc. adhered to the sea baserock quickly and evenly and suppressing quantity of sea baserocks crushed at the time by a simple structure and to provide a device for removing the object adhered to the sea baserock using this attachment. <P>SOLUTION: A rotary head 5 of the attachment 3 mounted on a boom 2a of the submerged back hoe 2 is rotated. When a wire brush 12 is brought into contact with the baserock R, the rotary head 5 swings centered on a supporting shaft 6 by following recessed and projecting parts on the baserock R, and the swing is buffered by an air damper 7. A wire rope constituting a wire brush 12 comes into contact with the baserock R repeatedly so that twisted strands are gradually released and are formed like a brush to remove the object such as coral, algae, etc. adhered to the baserock R by following the recessed and projecting parts on the baserock R closely. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an underwater bedrock deposit removal attachment and an underwater bedrock deposit removal device, and more particularly, a lime algae such as a coral algae and a weed that has a simple structure, and is quickly and uniformly attached to the underwater bedrock. The present invention relates to an underwater bedrock removal attachment for a backhoe and an underwater bedrock removal apparatus using the attachment, which can remove algae and the like, and can suppress the amount of underwater bedrock to be cut at that time.

  In recent years, so-called burnt burning in which coral algae and other lime algae adhere to the bedrock in the sea has become a major problem. Since the burned rock mass is covered with calcareous material, seaweed spores cannot be attached and seaweeds will not propagate. Along with this, it becomes difficult for fish and shellfish to live in, causing a problem that the environment as a fish farm deteriorates.

  Conventionally, a flexible steel rod is assembled radially to the rotating head as a countermeasure against burning, and this is made into an attachment structure of an underwater backhoe, and the rotating head is rotated to remove the deposits of coral algae and weed algae attached to the bedrock. A removal method has been proposed (see Patent Document 1). By using this proposed attachment, it is possible to remove deposits without unevenness by simply shaving only the surface of the rock.

  However, in order to perform the removal work corresponding to the unevenness of the rock mass, a tilt device for tilting the rotary head is necessary. In addition, the steel rod protruding from the outer peripheral surface of the rotating head has a small contact area (number of contacts) with the bedrock, so the range in which deposits can be removed at a time is narrow, and there is a limit to speeding up the removal work. .

Moreover, since the shaving pieces on the surface of the rock are scattered around, there is a problem that spores of new seaweeds adhere to the shaving pieces and are washed away with the shaving pieces, making it difficult for the seaweeds to propagate. Therefore, in order to prevent scattering of the shaving pieces, it is necessary to provide a special suction device for sucking the shaving pieces as proposed in Patent Document 1.
JP 2001-220725 A

  The object of the present invention is for a backhoe that has a simple structure, removes lime algae adhering to the underwater rock mass quickly and without unevenness, and can suppress the amount of the underwater rock mass to be shaved at that time. An object of the present invention is to provide an underwater bedrock removal attachment and an underwater bedrock removal apparatus using the attachment.

  In order to achieve the above object, the underwater bedrock removal attachment of the present invention pivotally supports a rotating head having a head portion at the tip of a rotating shaft on a base portion that is attached to and detached from a backhoe boom. An air damper is interposed between the base portion and the rotary head, and a large number of wire brushes constituted by wire ropes are projected from the front end surface in the rotation axis direction of the head portion.

  Moreover, the underwater bedrock deposit removing device of the present invention is characterized in that the underwater bedrock deposit removing attachment described above is mounted on a backhoe boom.

  According to the underwater rock deposit removing attachment and the underwater rock deposit removing apparatus of the present invention, the rotary head having the head portion at the tip of the rotary shaft is pivotally supported so that the rotary head protrudes from the head portion of the rotary head. Just by pressing the wire brush installed against the rock, the rotating head swings according to the unevenness of the rock, and the air damper interposed between the base and the rotating head buffers the swinging. The rotating head can be made to follow the unevenness of the rock with a good response.

  In addition, the wire rope constituting the wire brush gradually untwists the strands by repeatedly contacting the bedrock and deposits, making it easier to bend than the steel rod and closely following the unevenness of the bedrock. By cooperating with the follow-up, the bedrock deposits can be scraped off evenly.

  In this way, the rotating head and wire brush (wire rope) closely follow the irregularities of the rock mass, so that excessive force that scrapes the rock mass is not generated, scattering of the rock mass fragments is prevented, and the shavings are removed. There is no need for special equipment for inhalation.

  In addition, since many wire brushes are erected on the surface of the head portion on the tip side in the rotation axis direction, the contact area (number of contacts) with the rock is increased, and a wide range of deposits can be removed at a time. And the removal operation can be greatly accelerated.

  Hereinafter, the underwater bedrock removal attachment and the underwater bedrock removal apparatus of the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIG. 1, the underwater bedrock removal device 1 according to the present invention is configured by mounting the underwater bedrock removal attachment 3 (hereinafter referred to as an attachment 3) of the present invention on a boom 2 a of an underwater backhoe 2. ing.

  As shown in FIGS. 2 and 3, the attachment 3 has a rotating head 5 pivotally supported by a support shaft 6 on a base portion 4 that is attached to and detached from a boom 2 a of the underwater backhoe 2. The rotary head 5 has a disk-like head portion 5a at the tip of a rotary shaft 5b protruding from the motor case 5c, and the motor case 5c is pivotally supported by a support shaft 6 orthogonal to the axial direction of the rotary shaft 5b. A drive motor that rotationally drives the rotary shaft 5b is provided in the motor case 5c.

  Further, the base portion 4 and the rotary head 5 are connected by an air damper 7. As shown in FIGS. 3 and 4, the air damper 7 includes a pair of air cylinders that are connected to the support frame 5 d and the base portion 4 that protrude from both ends of the motor case 5 c at both sides of the support shaft 6. 8 and 8. Each of the air cylinders 8 and 8 is a link in which the rear ends of the cylinders 8a and 8a sealed with gas (air) are connected to the base 4 and the tips of the cylinder rods 8c and 8c are connected to the support frame 5d. It is a mechanism. Further, the front end portions and the rear end portions of the cylinders 8a and 8a communicate with each other through communication hoses 9a and 9b, respectively.

  These air cylinders 8 and 8 need only be connected to the rotary head 5 and the base portion 4 with the support shaft 6 interposed therebetween so that the swinging of the rotary head 5 around the support shaft 6 can be buffered. The structure is not limited.

  A large number of wire brushes 12 for scraping off deposits C such as coral algae and weed algae adhering to the rock mass R are provided on the surface of the head portion 5a in the rotational axis direction (hereinafter referred to as the surface of the head portion 5a). Projected. The number of wire brushes 12 is, for example, about 80 to 120 and the length is about 20 cm to 50 cm, but is not limited to this range.

  These many wire brushes 12 are arranged on the surface of the head portion 5a in an annular shape coaxial with the rotary shaft 5b. Depending on the conditions at the work site, the wire brush 12 is arranged in a single or double ring, and may be arranged in a non-ring arrangement.

  As illustrated in FIG. 5, the wire brush 12 is configured by a wire rope 12 a in which a large number of strands 12 b are twisted and bundled, and a metal sleeve 13 is fastened and fixed to one end thereof. As the wire rope 12a, for example, those having various structures defined in JIS G 3525 can be used. For example, IWRC6 × Fi (29) is used as a JIS configuration symbol, and the wire rope 12a The nominal diameter is about 31.5 mm. In addition, the specification of the wire rope 12a which comprises the wire brush 12 is not limited to what was illustrated above, The structure and wire diameter suitable for the conditions of a work site, etc. are selected. If the tip of the wire brush 12 is kept slightly welded and not frayed, the work can be safely performed during storage, movement, and attachment to the head portion 5a, and handling is improved.

  A holder 10 is provided on the surface of the head portion 5 so as to correspond to the arrangement of the wire brush 12, and by attaching a metal sleeve 13 at one end of the wire brush 12 to the holder 10, a number of heads 5 a The wire brush 12 protrudes and is arranged as set. The holder 10 is provided with a mounting bolt 10a, and the metal sleeve 13 is attached and detached by tightening and releasing the mounting bolt 10a. Thereby, the attachment and detachment of the wire brush 12 and the head part 5a can be facilitated, and the worn wire brush 12 can be replaced quickly. The attachment / detachment means for the metal sleeve 13 provided in the holder 10 is not limited to the attachment bolt 10a, but may have other structures.

  As illustrated in FIG. 6, the head portion 5 a may be provided with a stopper 11 that protrudes toward the front end side in the rotation axis direction. The stopper 11 is connected to a stopper mounting portion 11a protruding from the head portion 5a via a radial load bearing 14a and a thrust load bearing 14b, and is connected so as not to rotate integrally with the rotary head 5.

  The tip of the stopper 11 is set at a midway position between the root position and the tip position of the wire brush 12. The position of the tip of the stopper 11 is determined within this range depending on the conditions at the work site, for example, and is set to a position of about 40 to 60% of the protruding length of the wire brush 12.

  For example, the stopper 11 may have a double tube structure in which an inner tube is inserted into an outer tube, and may be configured to be extendable and contractible so that the protruding length from the head portion 5a can be adjusted. Thereby, the protrusion length of the stopper 11 can be quickly set according to the work site.

  Hereinafter, the removal work of the deposit C on the bedrock R by the underwater bedrock deposit removal apparatus 1 will be described. By operating the underwater backhoe 2, the rotating head portion 5 a is brought close to the bedrock R to be worked, and the rotating wire brush 12 is repeatedly brought into contact with the deposit C on the bedrock R. At this time, simply by pressing the wire brush 12 against the rock mass, the rotary head 5 swings around the support shaft 6 according to the unevenness of the rock mass R. Therefore, a special device for inclining the rotary head 5 according to the rock mass R is not required, and a simple structure can be achieved.

  When the rotary head 5 swings, the cylinder rods 8c, 8c of the pair of air cylinders 8, 8 move forward and backward in opposite directions. At that time, the gas pushed by the piston 8b of the retreating cylinder rod 8c flows into the cylinder 8c on the side where the cylinder rod 8c moves forward through the communication hose 9b at the rear end. At the same time, the gas pushed by the piston 8b of the cylinder rod 8c moving forward flows into the cylinder 8c on the side where the cylinder rod 8c moves backward through the communication hose 9a at the tip.

  Thus, since the gas moves between the pair of air cylinders 8 and 8 according to the swing of the rotary head 5, the swing of the rotary head 5 is ensured within the range of the stroke length of the cylinder rod 8c. Further, the impact of the oscillation is mitigated by the elasticity of the sealing gas. Thereby, the rotating head 5 can be made to follow the unevenness | corrugation of the rock mass R easily with sufficient response.

  Further, at the contact surface between the bedrock R and the wire brush 12, the strand 12b of the wire rope 12a constituting the wire brush 12 repeatedly comes into contact with the deposit C and the bedrock R, so that the twist is gradually unwound and becomes a brush shape. Become. In order to prevent fraying, when the tip of the wire brush 12 is slightly welded, the removal work is started and the wire brush 12 repeatedly comes into contact with the deposit C and the rock mass R, so that the welded portion can be easily formed. It breaks and the strand 12b can be untwisted.

  As a result, the wire rope 12a bends so as to conform to the irregularities of the rock mass R and closely follows the irregularities of the rock mass R, and the wire rope 12a is not easily plastically deformed, so that it is attached with no unevenness. Kimono C can be scraped from bedrock R. In this way, both the rotary head 5 and the wire rope 12a follow the rock mass R, and cooperate to closely follow the rock mass R, so that the deposits on the rock mass R can be more evenly removed. .

  Thus, since the rotary head 5 and the wire brush 12 (wire rope 12a) closely follow the unevenness of the rock mass R and remove the deposit C, excessive force is not applied to the rock mass R itself, and the removal work is performed. It is possible to minimize the amount of the rock mass R to be cut at the time.

  When the stopper 11 is provided as illustrated in FIG. 6, when the rotary head 5 is brought closer to the rock R than a predetermined distance, the rotary head 5 is connected to the rotary head 5 via the radial load bearing 14a and the thrust load bearing 14b. The stopper 11 is in contact with the rock R (attachment C) in a non-rotating state without being affected by the rotation of the rotary head 5. Thereby, the trouble which makes the rotating head part 5a collide with the bedrock R, and the trouble which crushes the bedrock R on a large scale can be prevented.

  Further, when the rotary head 5 is moved while the stopper 11 is in contact with the rock R (adhered matter C), the length of the wire brush 12 that contacts the attached matter C can be kept constant. Thereby, the force which removes the deposit | attachment C can be equalize | homogenized, and the stable removal operation | work can be performed.

  The stopper 11 is preferably connected so as not to rotate integrally with the rotary head 5, and is not limited to the connection structure of FIG. 6, and other connection structures may be used. In order to simplify the structure, a rod-like stopper 11 may be provided on the head portion 5a. In this structure, the stopper 11 rotates together with the rotary head 5, so Impact is slightly increased.

  The removal work is sequentially performed from the area where the removal work is completed to the next area, and the removal work is performed in the same manner. However, when the removal work is performed at a site where the water depth is shallow, instead of the underwater backhoe 2, a normal backhoe boom is used. It is also possible to work with the attachment 3 attached.

  Since the scraps of the rock mass R are not scattered at the site where the deposit C is removed, new spores of seaweed can adhere to the rock mass R without being blocked by these. For this reason, for example, spores of seaweeds such as seaweed, seaweed, arame, honda walla, etc. adhere to this bedrock R, and it is easy to reproduce, and accordingly, a good fish place environment where seafood is easy to inhabit is formed. be able to.

It is a side view which illustrates the underwater bedrock deposit removal apparatus of this invention. It is a side view which illustrates the underwater bedrock deposit removal attachment of FIG. FIG. 3 is a front view of FIG. 2. It is explanatory drawing which shows the structure of the air damper of FIG. It is explanatory drawing which shows the structure of the wire brush and holder of FIG. FIG. 3 is a partially cutaway explanatory view illustrating a connection structure between a rotary head and a stopper in FIG. 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underwater bedrock removal apparatus 2 Underwater backhoe 2a Boom 3 (Underwater bedrock deposit removal) Attachment 4 Base part 5 Rotating head 5a Head part 5b Rotating shaft 5c Motor case 5d Support frame 6 Support shaft 7 Air damper 8 Air cylinder 8a Cylinder 8b Piston 8c Cylinder rod 9a, 9b Communication hose 10 Holder 10a Mounting bolt 11 Stopper 11a Stopper mounting portion 12 Wire brush 12a Wire rope 12b Strand 13 Metal sleeve 14a Radial load bearing 14b Thrust load bearing R Rock bed C Attachment

Claims (6)

  A rotary head having a head portion at the tip of a rotary shaft is pivotally supported on a base portion that is attached to and detached from a backhoe boom, and an air damper is interposed between the base portion and the rotary head, and the head An underwater bedrock removal attachment with a large number of wire brushes made of wire rope protruding from the surface on the tip side of the rotating shaft.   A pair of air cylinders are provided for connecting the air damper to the rotary head and the base at both sides of a support shaft that pivotally supports the rotary head, and the cylinder front and rear end portions of these air cylinders are provided. The underwater bedrock deposit removal attachment according to claim 1, wherein the underwater bedrock deposit removal attachment is configured.   A crimped metal sleeve is provided at one end of the wire brush, a holder part to which the metal sleeve can be attached and detached is provided on the front surface in the rotational axis direction of the head part, and the metal sleeve is attached to the holder part. The underwater bedrock deposit removal attachment according to claim 1 or 2, wherein the wire brush is configured to project from a front end surface of the head portion in the rotation axis direction.   The underwater bedrock removal according to any one of claims 1 to 3, wherein a stopper is provided on the rotary head, and the tip of the stopper is set at a midway position between a root position and a tip position of the wire brush. attachment.   The underwater bedrock removal attachment according to claim 4, wherein the stopper is configured to be extendable.   An underwater bedrock removal apparatus configured by mounting the underwater bedrock removal attachment according to any one of claims 1 to 5 on a boom of a backhoe.

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