JP2012002011A - Shovel bucket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shovel bucket having improved assemblability of a plate.SOLUTION: A resin plate 30 for removing shells as a plate that is fixed to a bucket body 20 having four claws 22 for excavation at the end comprises a rib 32 and bolt holes for fitting to the four claws 22 with bolts 24, allowing the resin plate 30 for removing shells to be directly fixed to the claws 22 with a small number of parts of an object to be fitted without a need of a reinforcing member for the resin plate 30 for removing shells, with improved assemblability of the resin plate 30 for removing shells as a plate.

Description

  The present invention relates to an excavator bucket attached to a heavy construction machine.

  Conventionally, an excavator bucket that is attached to a heavy construction machine such as a hydraulic excavator and scrapes off shells adhering to a wall surface such as a water conduit of a thermal power plant has been proposed (see, for example, Patent Document 1). In this shovel bucket, a mounting seat is attached to the bucket body by bolting, and a thin plate-like plate for shelling is attached to the mounting seat by bolting. And the shellfish adhering to a wall surface shall be scraped off by moving a shovel bucket, pressing a thin plate-shaped plate against a wall surface.

JP 7-34481 A

  However, in the above-described shovel bucket, since it is necessary to attach a thin plate plate together with the mounting seat, the number of bolts and the number of parts required for the mounting increase, and the mounting takes time. On the other hand, it is conceivable to attach a thin plate directly to the bucket body. However, since the plate is pressed against the wall surface when scraping off the shellfish, the plate may be broken by the force applied at that time.

  The main purpose of the shovel bucket of the present invention is to improve the assembling property of the plate.

  The shovel bucket of the present invention employs the following means in order to achieve the main object described above.

The shovel bucket of the present invention is
An excavator bucket attached to a heavy construction machine,
A bucket body provided with a plurality of clawes for excavation at the tip;
A plate fixed to the bucket body at a position protruding from the tips of the plurality of claws so that one side is in line contact with a plane;
The plate is provided with a plurality of ribs and a fixing portion that is fixed in contact with the plurality of claws.

  In the shovel bucket according to the present invention, the plate fixed to the bucket body provided with a plurality of excavating claws at the tip is provided with a plurality of ribs and fixed in a state in contact with the plurality of claws. A fixed part is formed. By providing a plurality of ribs, the strength of the plate can be improved, and the plate can be prevented from cracking when the plate is pressed against a flat surface. As a result, it is possible to directly fix the plate to the claw of the bucket body without attaching reinforcing parts, and to improve the assembling property of the plate.

  In such an excavator bucket of the present invention, the plate includes, as the plurality of ribs, a first rib disposed to be parallel to the one side and a plurality of second ribs disposed to be orthogonal to the first rib. These ribs may be provided. By doing so, the strength of the plate can be further improved as compared with the case where the rib is provided only in one direction, and the possibility of the plate breaking can be further reduced. In the shovel bucket according to the aspect of the present invention, the plurality of claws have a rectangular contact surface with the plate, and the plate includes the first rib and the second rib. It can also be arranged so that the contact surface of the nail fits. If it carries out like this, since the positioning of the plate at the time of fixing to a nail | claw becomes easy, the assembly | attachment property of a plate can be improved more.

  Further, in the shovel bucket of the present invention, the plate is arranged in such a manner that a rotation axis is arranged parallel to the one side, and the roller protrudes from the one side at an initial position and is rotatable in a direction perpendicular to the one side. A roller mechanism having a spring that biases the roller so as to slide on the surface may be provided. In this way, when the plate is pressed against a flat surface, the force applied to the plate can be received and dispersed by the roller, so that the possibility of the plate breaking can be further reduced.

  Further, in the shovel bucket according to the present invention, the plurality of claws have attachment holes formed therein, and the plate has attachment holes formed at positions corresponding to the attachment holes of the plurality of claws as the fixing portion. It can be fixed through a bolt in the mounting hole. If it carries out like this, since attachment / detachment of a plate will become easy, assembly | attachment property can further be improved.

It is a perspective view of the shovel bucket 10 to which the resin plate 30 for shelling was fixed. 1 is a front view of an excavator bucket 10. 1 is a side view of an excavator bucket 10. It is a block diagram which shows the structure of the resin plate 30 for shelling. It is explanatory drawing which shows the mode of the shelling work by the hydraulic shovel 100 to which the shovel bucket 10 of this embodiment was attached. It is a side view of 10 A of shovel buckets of a modification.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of a shovel bucket 10 to which a shelling resin plate 30 according to an embodiment of the present invention is fixed. FIG. 2 is a front view of the shovel bucket 10. FIG. 3 is a shovel bucket. 10 is a side view, and FIG. 4 is a configuration diagram showing the configuration of the resin shell 30 for shelling.

  The shovel bucket 10 of the embodiment includes a bucket body 20 attached to an arm 102 of a heavy construction machine such as a hydraulic shovel (not shown), and a shelling resin plate 30 fixed to the bucket body 20. The bucket body 20 is formed with four claws 22 on the front end side and a bracket 26 for attaching to the arm 102 using an attachment pin 28 on the rear end side. Further, the shell removing resin plate 30 is assembled and fixed to the four claws 22 of the bucket body 20 by bolting using bolts 24, nuts 25, and washers.

  Each of the claws 22 has a substantially constant width from the root to the tip, is formed in a tapered shape so that the thickness direction tapers toward the tip, and a contact surface that contacts the shelling resin plate 30 is formed. It is formed in a rectangular shape (see FIGS. 2 and 3). Further, the claw 22 is formed with a bolt hole 22a for passing a bolt 24 when the shelling resin plate 30 is assembled. Note that the claw 22 functions as a normal excavation claw in a state where the shelling resin plate 30 is not fixed.

  The structure of the shell removing resin plate 30 will be described with reference to FIG. FIG. 4A is a top view of the shell-shell resin plate 30, FIG. 4B is a bottom view of the shell-shell resin plate 30, and FIG. 4C is A- of FIG. It is A sectional drawing. In this embodiment, the shell-shell resin plate 30 is configured as a rectangular resin plate with an outer peripheral edge. The shell-shell resin plate 30 is assembled in a state in which the direction of the long side is parallel to the width direction of the bucket body 20 (lateral direction in FIGS. 2 and 4) and protrudes from the tip of the claw 22. For this reason, it is possible to make one long side of the resin plate 30 for shell removal line contact with a plane. The shell removal resin plate 30 has four bolt holes 30a and ribs 32 extending vertically and horizontally in FIG. The rib 32 is composed of two horizontal ribs 32a provided so as to be parallel to the long side, and eight vertical ribs 32b provided so as to be orthogonal to the horizontal rib 32a. Further, the horizontal rib 32a and the vertical rib 32b are arranged so that the rectangular region surrounded by the horizontal rib 32a and the vertical rib 32b is large enough to fit the rectangular contact surface of the claw 22. Therefore, when the shell removing resin plate 30 is assembled to the bucket body 20 with the lower surface as a contact surface to the claw 22, the claws 22 are fitted between the horizontal ribs 32a and the vertical ribs 32b, respectively. The four bolt holes 30a of the shell removing resin plate 30 face the holes 22a. By arranging the ribs 32 in this way, positioning when the shelling resin plate 30 is assembled to the bucket body 20 can be easily performed, and the bolts 24 can be passed smoothly.

  Next, shell removal work will be described as an example of work using the shovel bucket 10 of the present embodiment thus configured. FIG. 5 is an explanatory diagram showing the state of the shelling work in the excavator 100 to which the excavator bucket 10 of this embodiment is attached. This shell removal work is performed, for example, in order to remove shellfish such as a river shellfish adhering to the wall surface of the waterway of the power plant. This shell removal work is performed by bringing the shell removing resin plate 30 attached to the tip of the shovel bucket 10 into contact with the wall surface above the portion to be removed and operating the arm 102 while pressing the shell removing resin plate 30 against the wall surface. The excavator bucket 10 is moved downward.

  Here, during such shelling work, a reaction force against the pressing force against the wall surface acts on the shelling resin plate 30, and therefore the shelling resin plate 30 may break depending on the level of the pressing force. In particular, cracks are likely to occur at a portion between the claw 22 of the shovel bucket 10 and a portion protruding from the tip of the claw 22. In order to prevent such cracking, it may be considered that a reinforcing member or the like is assembled separately from the shell-shell resin plate 30. However, since parts, bolts, nuts, and the like to be assembled increase, the assemblability of the shell-shell resin plate 30 decreases. For this reason, in this embodiment, the rib 32 which consists of the horizontal rib 32a and the vertical rib 32b is provided in the resin plate 30 for shell removal, and generation | occurrence | production of the crack at the time of shell removal work is prevented. Accordingly, since the number of parts to be assembled can be reduced and the shell-shell resin plate 30 can be directly fixed to the claws 22 without requiring a reinforcing member as a countermeasure against cracking, the shell-shell resin plate 30 assemblability can be improved. Moreover, since the shell removing resin plate 30 is assembled to the bucket body 20 by bolting, it can be easily detached. For these reasons, when the shovel bucket 10 is used for excavation and shelling, both operations can be quickly switched. For this reason, the rib 32 is provided on the shell removing resin plate 30 and is fixed to the claws 22 of the bucket body 20 by bolting.

  Here, the correspondence between the components of the present embodiment and the components of the present invention will be clarified. The bucket body 20 of the present embodiment corresponds to the bucket body of the present invention, the shelling resin plate 30 corresponds to the plate, the rib 32 corresponds to the rib, and the bolt hole 30a serves as the fixing portion (plate attachment hole). Equivalent to. The horizontal rib 32a corresponds to the first rib, and the vertical rib 32b corresponds to the second rib. Furthermore, the roller 42 corresponds to a roller, the spring 44 corresponds to a spring, the roller mechanism 40 corresponds to a roller mechanism, and the bolt hole 22a corresponds to a claw mounting hole.

  According to the shovel bucket 10 of this embodiment described in detail above, the ribs 32 are provided on the shelling resin plate 30 fixed to the bucket body 20 provided with the four claws 22 for excavation at the tip. In addition, since the bolt holes 30a to be assembled with the four claws 22 using the bolts 24 are formed, the number of components to be assembled can be suppressed without requiring a member for reinforcing the resin plate 30 for shelling. It can fix directly to the nail | claw 22, and the assembly | attachment property of the resin plate 30 for shelling can be improved. Moreover, since the rib 32 consists of the horizontal rib 32a and the vertical rib 32b, the intensity | strength of the resin plate 30 for shell removal can be improved more compared with what has a rib provided only in one direction. Further, since the lateral ribs 32a and the longitudinal ribs 32b are arranged so that the contact surfaces of the claws 22 are fitted, the positioning of the resin plate 30 for shelling can be easily performed.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  In the above-described embodiment, the ribs 32 are provided on the lower surface of the shell removing resin plate 30 and the ribs 32 are not provided on the upper surface, but the ribs may be provided on the upper surface. Moreover, it is good also as what provides the roller mechanism 40 for relieving the force which acts on the resin plate 30 for shell removal on an upper surface. The side view of the shovel bucket 10A of the modification in that case is shown in FIG. In FIG. 6, the same component numbers as those of the present embodiment are denoted by the same reference numerals, and the description thereof is omitted. As shown in the figure, in the shovel bucket 10 </ b> A according to the modification, a shelling resin plate 30 </ b> A to which the roller mechanism 40 is attached is fixed to the bucket body 20. The roller mechanism 40 includes a roller 42 arranged so that the rotation shaft 42a is parallel to the direction of the long side of the shelling resin plate 30A, and a part of the roller 42 at the initial position outside the shelling resin plate 30A. And a spring 44 that urges the roller 42 to slide in a direction orthogonal to the long side while the roller 42 is rotatable, and a spring receiver 46 that receives the spring 44. Yes. Thereby, in the shelling operation, when the shelling resin plate 30A is brought into contact with the wall surface or moved downward while being pressed against the wall surface, the force acting on the shelling resin plate 30A from the wall surface is applied to the roller 42. (Spring 44) can be received and the force applied to the shell-shell resin plate 30A can be dispersed. For this reason, it is possible to prevent an excessive force from acting on the shelling resin plate 30A, and to further reduce the possibility that the shelling resin plate 30A will break. As a result, when the shell removing resin plate 30A is assembled to the claw 22 without using a reinforcing member, it is possible to more reliably prevent problems such as cracks from occurring. Can do. In addition, the roller 42 is good also as what is attached over the full length of the long side direction of the resin board 30 for shell removal, and good also as what is attached in several places partially.

  In the embodiment described above, the bucket main body 20 is provided with the four claws 22, but the present invention is not limited to this, and the number of claws may be any number as long as it is two or more.

  In the embodiment described above, the arrangement of the ribs 32 is determined so that the contact surface of the claw 22 is fitted, but the present invention is not limited to this, and the arrangement may be determined so as to be equally spaced. Moreover, it is good also as what forms the slit which fits in the edge of the opening part of the bucket main body 20 in a part of resin plate 30 for shell removal, and positions the resin plate 30 for shell shell by this.

  In the embodiment described above, the shell removing resin plate 30 is a resin plate with an outer peripheral edge. However, the present invention is not limited thereto, and the outer shell may have no edge. The shell removal plate is not limited to resin, and may be made of hard rubber, plastic, wood, or the like.

  In the embodiment described above, the shelling resin plate 30 is fixed to the claw 22 by bolting. However, the present invention is not limited to this, and any material that can be fixed to the claw 22 may be used. It may be fixed. However, in order to make it easy to attach and detach the shell removing resin plate 30, it is preferable to fix the shell removing resin plate 30 by bolting as in this embodiment.

  In the above-described embodiment, the shelling work on the wall surface of the water conduit is illustrated as an example of use of the shovel bucket 10, but the present invention is not limited to this. It is good also as the operation | work which removes the deposit | attachment adhering to the bottom face instead. Moreover, it is not restricted to a deposit | attachment, It is good also as what is used for the operation | work etc. which level the unevenness | corrugation produced by erosion, secular change, etc.

  10, 10A excavator bucket, 20 bucket body, 22 claw, 22a bolt hole, 24 bolt, 25 nut, 26 bracket, 28 mounting pin, 30, 30A shelling resin plate, 30a bolt hole, 32 rib, 32a lateral rib, 32b Vertical rib, 40 roller mechanism, 42 roller, 42a rotating shaft, 44 spring, 46 spring receiver, 100 hydraulic excavator, 102 arm.

Claims (5)

An excavator bucket attached to a heavy construction machine,
A bucket body provided with a plurality of clawes for excavation at the tip;
A plate fixed to the bucket body at a position protruding from the tips of the plurality of claws so that one side is in line contact with a plane;
The plate is provided with a plurality of ribs and a fixed portion that is fixed in contact with the plurality of claws.   The plate includes, as the plurality of ribs, a first rib disposed so as to be parallel to the one side and a plurality of second ribs disposed so as to be orthogonal to the first rib. The shovel bucket according to claim 1. The shovel bucket according to claim 2,
The plurality of claws are formed in a rectangular contact surface with the plate,
The excavator bucket is configured such that the first rib and the second rib are arranged so that the contact surfaces of the plurality of claws fit into the plate.   A roller arranged so that a rotation axis is parallel to the one side, and the roller that slides on the surface of the plate in a state where the roller protrudes from the one side at an initial position and is rotatable in a direction perpendicular to the one side. The shovel bucket of any one of Claim 1 thru | or 3 provided with the roller mechanism which has a spring which urges | biases. The shovel bucket according to any one of claims 1 to 4,
The plurality of claws are formed with mounting holes,
The plate has a mounting hole formed at a position corresponding to the mounting hole of the plurality of claws as the fixing portion, and is fixed to the both mounting holes with bolts.

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