JP2002309626A - Bucket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bucket capable of surely scooping up dust, accumulated earth and sand, weed or the like on the uneven road. SOLUTION: For a claw plate 20 mounted on a cutting edge 17, the claw plate 20 is held between the basic end side and the cutting edge 17, and the claw plate is so constituted that the front end side is projected from the cutting edge 17 to provide a reinforcing plate 21 for reinforcing the free end 20C of the claw plate 20. By the constitution, when the free end 20C of the claw plate 20 is brought into contact with the accumulated earth and sand hardened on the road, weeds grown on the road, the free end 20C of the claw plate 20 curved from the road is controlled with the reinforcing plate 21, and it can be pushed against the road. For that purpose, not only the dust fallen on the road, but also the accumulated earth and sand and the weeds can be scooped up with the claw plate 20, and the uneven road can be efficiently cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bucket mounted on a construction machine such as a hydraulic shovel, and more particularly to a bucket suitably used for cleaning a road surface.

[0002]

2. Description of the Related Art Generally, when cleaning dust scattered on a road surface, such as dust, muddy soil and leaf fall, a rotary brush for sweeping the dust, a dust box for taking in the dust swept by the rotary brush and the like are generally used. The cleaning truck provided is preferably used (for example, Japanese Utility Model Laid-Open No. 1-138914).

However, the above-described cleaning truck is suitable for cleaning dust on relatively flat road surfaces, but is suitable for cleaning dust on uneven road surfaces such as uneven terrain. Absent.

[0004] For this reason, cleaning work on an uneven road surface is usually carried out by a worker scooping up dust on the road surface using a scoop or the like. Work is heavy work, and there is a problem that the burden on the worker increases.

On the other hand, for example, in Japanese Utility Model Laid-Open Publication No. 3-122138, an elastic plate made of an elastic material such as rubber is provided on outer surfaces of left and right side edges and a cutting edge constituting a bucket of a hydraulic shovel. There has been proposed a bucket in which the elastic plate is protruded from the ends of the side edge and the cutting edge.

When the bucket is used for cleaning the road surface, the bucket is moved along the road surface while the elastic plate is in contact with the road surface, so that the free end of the elastic plate can be removed from the road surface. Since the elastic plate deforms according to the unevenness, dust on the road surface can be scooped by the elastic plate. Therefore, it is possible to efficiently perform the work of cleaning the uneven road surface using the hydraulic excavator without relying on the manual work of the operator.

[0007]

However, in the above-mentioned bucket according to the prior art, since the free end of the elastic plate protruding from the cutting edge is not reinforced, dirt, muddy soil, fallen leaves, etc., simply falling on the road surface are not provided. The dust can be scooped by the elastic plate, but when the elastic plate comes into contact with, for example, sediment deposited on the road surface and solidified sediment, weeds growing on the road surface, the free end of the elastic plate is turned up from the road surface. There is a problem that it is difficult to scoop up (separate) these sediment, sand and weeds from the road surface.

On the other hand, for example, when a flat plate made of a steel plate or the like is provided so as to protrude from the cutting edge instead of the elastic plate as described above, the sediment, sand and weeds can be scraped off by the flat plate. Since the flat plate cannot be deformed in accordance with the unevenness of the road surface, there is a problem that, for example, dust on the uneven road surface or dust accumulated around the curb or the like provided on the road surface cannot be reliably scooped. is there.

The present invention has been made in view of the above-mentioned problems of the prior art, and can reliably scoop dust, sediment, sand, and weeds on an uneven road surface, and can efficiently clean the road surface. The purpose is to provide a bucket that can be used.

[0010]

In order to solve the above-mentioned problems, the present invention provides a bottom plate, side plates provided on both left and right sides of the bottom plate, and a side edge provided on an opening side of each side plate. And a cutting edge provided between the side edges and provided on the distal end side of the bottom plate, and an elastic body fixed at the base end side to the cutting edge and the distal end side being a free end and projecting from the cutting edge. The present invention is applied to a bucket provided with a claw plate.

The feature of the structure adopted by the invention of claim 1 is that the base end side clamps the nail plate with the cutting edge, and the distal end side protrudes from the cutting edge to reinforce the free end of the nail plate. I have provided a board.

With this configuration, when the free end of the claw plate is brought into contact with the ground, the free end of the claw plate is elastically deformed in accordance with the uneven shape of the ground. Can be scooped. Further, since the free end of the nail plate is reinforced by the reinforcing plate, the free end of the nail plate is contacted when the free end of the nail plate comes into contact with sediment hardened on the road surface, weeds growing on the road surface, or the like. Is prevented from being turned up from the road surface by the reinforcing plate, and can be pressed against the ground side, and the sediment, sand and weeds can be scraped off from the ground by the nail plate.

According to a second aspect of the present invention, the reinforcing plate has a tip end provided with:
In order to press the free end of the nail plate elastically against the ground,
The configuration is such that a comb-tooth portion composed of a plurality of plate-like pieces arranged in a comb-tooth shape in the left and right directions is provided.

[0014] With this configuration, when the free end of the claw plate is deformed in accordance with the uneven shape of the ground, each plate-like piece constituting the comb-teeth portion of the reinforcing plate accompanies the deformation of the claw plate. The free end of the claw plate is pressed against the ground while being elastically deformed. For this reason, the clearance between the free end of the claw plate and the ground can be reduced to enhance the adhesion between the two, and dust and the like on the ground can be reliably scooped by the claw plate.

A third aspect of the present invention is that a brush is provided at the tip end of the claw plate and extends leftward and rightward along the claw plate and is rotated by power supplied from a power source.

[0016] With this configuration, it is possible to crush sediment and soil by using a rotating brush and to cut off the weeds, and the crushed earth and sand, weeds and the like can be scooped by the nail plate. Further, dust that cannot be scooped by the nail plate alone, such as fine dust, muddy soil, and fallen leaves scattered on the ground, can be efficiently swept into the bucket by the brush.

According to a fourth aspect of the present invention, the brush is provided on the distal end side of the arm rotatably supported on each side edge, and is provided between the working position disposed on the distal end side of the claw plate and each of the side edges. It is configured to move to and from a storage position where the data is stored.

With this configuration, for example, when the ground cleaning operation is performed using only the nail plate without using a brush, the brush can be stored in a storage position that does not interfere with the nail plate. .

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a bucket according to the present invention will be described by way of an example in which the bucket is mounted on a hydraulic shovel.
This will be described in detail with reference to FIGS.

First, FIG. 1 to FIG. 5 show a bucket according to a first embodiment of the present invention.

In the drawing, reference numeral 1 denotes a hydraulic excavator, which comprises a crawler type lower traveling body 2 and a lower traveling body 2.
The upper revolving unit 3 is mounted on the upper revolving unit 3 so as to be capable of revolving upward. A working device 4 is provided on the front side of the upper revolving unit 3 so as to be able to move up and down.

Here, the working device 4 includes a boom 5 attached to the front side of the upper swing body 3 so as to be able to move upward and downward, an arm 6 attached to the tip side of the boom 5 so as to be able to move upward and downward, and A bucket link 7 rotatably attached to the distal end of the arm 6 and a bucket 11 described later rotatably attached to the distal end of the arm 6 and the bucket link 7 are used. It is used to clean dust on the road surface, such as dirt, earth and sand, and fallen leaves.

Reference numeral 11 denotes a cleaning bucket according to the present embodiment, which is attached to the distal end of the arm 6.
Is a bottom plate 12 which is curved in a concave arc shape, as shown in FIG.
And a flat left plate welded to both the left and right sides of the bottom plate 12.
Right side plates 13, 14, left and right side edges 15, 16 in the form of flat plates which are welded to the opening sides of these side plates 13, 14 and extend upward and downward, and these side edges 15, 1.
6 and a flat cutting edge 17 which is welded to the tip end of the bottom plate 12 and extends leftward and rightward. Left and right brackets 18 and 19 for pin-connecting the distal ends of the arm 6 and the bucket link 7 are fixed to the base end side of the bottom plate 12 so as to be separated to the left and right.

Here, the bucket 11 according to the present embodiment
Is used for cleaning work on road surfaces and the like, so that the cutting edge 17 is not provided with a cutting claw used for excavation such as earth and sand, and instead of the cutting claw, a claw plate 20 and a reinforcing plate 21 described later are used. Are attached using bolts 22. Therefore, as shown in FIGS. 3 and 4, a plurality of bolt holes (female screw holes) 17 </ b> A for screwing the bolts 22 are screwed in the cutting edge 17 in the left and right directions.

Numeral 20 denotes a claw plate attached to the cutting edge 17. The claw plate 20 is made of an elastic material such as rubber and has a length substantially equal to the distance between the left and right side edges 15, 16. It is formed in a rectangular flat plate shape.

Here, as shown in FIG. 4 and the like, the base end side of the claw plate 20 is a fixed end 2 attached to the inner surface of the cutting edge 17 using a reinforcing plate 21, bolts 22, and the like, which will be described later.
0A, and a plurality of bolt insertion holes 20B corresponding to each bolt hole 17A of the cutting edge 17 are formed in the fixed end 20A.

On the other hand, the front end side of the claw plate 20 protrudes from the front end of the cutting edge 17 with a protrusion dimension A.
The free end 20C is elastically deformed downward. The free end 20C of the claw plate 20 scoops dust on the road surface into the bucket 11 while being deformed according to the uneven shape of the road surface 23 by contacting the road surface 23 to be cleaned. .

Reference numeral 21 denotes a reinforcing plate attached to the cutting edge 17 together with the claw plate 20 to reinforce the free end 20A of the claw plate 20. The reinforcing plate 21 is substantially similar to the claw plate 20 using, for example, spring steel. It is formed in the shape of a rectangular flat plate having the same length, and its tip side has a protrusion A of the claw plate 20.
It is configured to protrude from the tip of the cutting edge 17 with a smaller protrusion dimension a (a <A).

Here, the claw plate 2 is provided at the base end side of the reinforcing plate 21.
A plurality of bolt insertion holes 21A corresponding to each of the 0 bolt insertion holes 20B are formed, and the bolts 22 inserted into the bolt insertion holes 21A of the reinforcing plate 21 and the bolt insertion holes 20B of the claw plate 20 are cut by the cutting edge. 17 bolt holes 17A
The reinforcing plate 21 is detachably attached to the inner surface of the cutting edge 17 by being screwed into the fixing edge 20 of the claw plate 20 between the reinforcing plate 21 and the cutting edge 17.
A is sandwiched.

On the other hand, the comb teeth 21
B are provided, and the comb teeth portion 21B is formed with a plurality of linear notches (slits) from the distal end side to the proximal end side of the reinforcing plate 21, for example, so that the left, It is configured as an aggregate of a plurality of elongated plate-like pieces 21C, 21C,.
Then, each plate-like piece 21C of the comb tooth part 21B is, for example, shown in FIG.
When the free end 20C of the claw plate 20 is deformed according to the uneven shape of the road surface 23, the free end 20C is elastically deformed along with the free end 20C and is pressed against the road surface 23 with elasticity. Thereby, the free end 20C of the claw plate 20
The structure is such that the gap between the road surface and the road surface 23 can be reduced, and the adhesion between them can be increased.

The bucket 11 according to the present embodiment has the above-described configuration, and the operation of cleaning the road surface using the bucket 11 will be described below.

First, as shown in FIG. 1, the bucket 11 is attached to the tip end of the arm 6 of the working device 4. Then, with the free end 20C of the claw plate 20 attached to the bucket 11 in contact with the road surface 23 to be cleaned, the bucket 11 is moved to the road surface 2.
Move in the forward and backward directions parallel to 3.

Accordingly, the free end 20C of the claw plate 20 is
The road surface 2 is elastically deformed while following the uneven shape of the road surface 23.
3 and move in the forward and backward directions, dust (not shown) such as dirt, earth and sand, and fallen leaves existing on the road surface 23 can be scooped into the bucket 11 by the claw plate 20. For this reason, the cleaning work of the uneven road surface can be efficiently performed using the hydraulic excavator 1 without depending on the manual operation of the operator.

In this case, the bucket 1 according to the present embodiment
1 is configured such that the free end 20C of the claw plate 20 is reinforced by the distal end side of the reinforcing plate 21 protruding from the cutting edge 17. For this reason, even if the free end 20C of the claw plate 20 abuts against, for example, sediment deposited on the road surface 23 and solidified on the road surface 23, weeds (not shown), etc., grown on the road surface 23, the free end 20C is The reinforcing plate 21 suppresses the deformation to be turned upside down and can be pressed against the road surface 23.

As a result, the above-described sediment, sand, and weeds can also be scooped (scraped) from the road surface 23 by the claw plate 20, and the dust on the road surface 23 can be reliably scooped without being left.

Further, the bucket 11 according to the present embodiment
Is a comb-shaped portion 2 formed of a plurality of elongated plate-like pieces 21C on the tip side of the reinforcing plate 21 protruding from the cutting edge 17.
1B is provided. For this reason, as shown in FIG. 5, for example, when the free end 20C of the claw plate 20 is deformed in accordance with the uneven shape of the road surface 23, each plate-like piece 21C of the comb tooth portion 21B moves with the free end 20C. The free end 20C can be elastically pressed against the road surface 23 while being elastically deformed.

As a result, the gap between the road surface 23 and the free end 20C of the claw plate 20 can be reduced, and the adhesion between them can be increased. For example, a curb or the like provided on the road surface 23 (not shown) The dust remaining in the surrounding area is not left behind, and the work of cleaning the road surface 23 can be performed more efficiently.

FIGS. 6 to 11 show a second embodiment of a bucket according to the present invention. The feature of this embodiment is that the bucket is driven by a power supplied from a power source to a tip end side thereof. It has a rotating brush. In this embodiment, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the drawing, reference numeral 31 denotes a cleaning bucket according to the present embodiment. The bucket 31 is substantially the same as the bucket 11 according to the first embodiment, and has a bottom plate 12, left and right side plates 13, 14, Left and right side edges 32, 3 described later
3, a cutting edge 17, a claw plate 20, a reinforcing plate 21, and the like, but a brush 39, which will be described later, is rotatably provided on the tip side of the claw plate 20.

Reference numerals 32 and 33 denote left and right side edges which are welded to the opening sides of the side plates 13 and 14 and extend upward and downward, respectively. These side edges 32 and 33 are the side edges according to the first embodiment. 15 and 16 are used in the present embodiment. Here, as shown in FIGS. 7 and 8,
At the lower end of the left side edge 32, an arm 3 described later is provided.
A shaft 34 rotatably supporting the shaft 6 is provided to penetrate in the left and right directions. On the other hand, as shown in FIGS. 7 and 9,
At the lower end of the right side edge 33, an arm 3 described later is provided.
A shaft 35 rotatably supporting the shaft 7 is provided so as to be coaxial with the above-described shaft 34 so as to penetrate in the left and right directions. Further, bolt holes (female screw holes) 33A and 33B for screwing positioning bolts 38, which will be described later, at two positions on the circumference around the shaft 35 are screwed at the lower end side of the right side edge 33. ing.

Reference numerals 36 and 37 denote left and right side edges 32,
The left and right arms 33 are provided rotatably on the arm 33. The arms 36 and 37 are formed in a substantially rectangular flat plate shape from, for example, a steel plate or the like, and rotatably support a brush 39 described later. is there.

Here, the base end of the arm 36 is rotatably supported by the side edge 32 via a shaft 34,
The base end side of 7 is rotatably supported by a side edge 33 via a shaft 35. Also, on the base end side of the arm 37,
A bolt insertion hole 37A is formed near the shaft 35 and through which a positioning bolt 38 described later is inserted. On both ends of the arms 36 and 37, both ends of a rotating shaft 39A of a brush 39 described later are rotatably supported.

Numeral 38 designates a positioning bolt for positioning the right arm 37 supporting the brush 39 with respect to the side edge 33.
Are screwed into one of the bolt holes 33A and 33B provided in the arm 37, and are inserted into the bolt insertion holes 37A provided in the arm 37.

When the positioning bolt 38 screwed into the bolt hole 33A of the side edge 33 is inserted into the bolt insertion hole 37A of the arm 37 as shown by a solid line in FIGS. It can be fixed to the working position on the tip side of the plate 20. On the other hand, as shown by a two-dot chain line in FIG.
When the positioning bolt 38 screwed into the arm 37 is inserted into the bolt insertion hole 37A of the arm 37, the brush 39 can be fixed at the storage position located between the side edges 32 and 33.

Reference numeral 39 is rotatably provided between the left and right arms 36 and 37, and is located at the tip side of the claw plate 20 and is provided with the claw plate 2.
The brush 39 extends left and right along 0.
Is formed in a substantially cylindrical shape by projecting a large number of wires or the like on the outer periphery of a rotating shaft 39A extending in the left and right directions, for example.

Here, both ends of the rotating shaft 39A are rotatably supported by the distal ends of the left and right arms 36 and 37, and one end of the rotating shaft 39A supported by the arm 36 has a belt 48 to be described later. The driven pulley 40 around which is wound is mounted. The brush 39 rotates on the tip side of the claw plate 20 by the power of a motor 41 described later, and sweeps dust and the like on the road surface into the bucket 31.

A motor 41 is located between the left and right side edges 32 and 33 and is attached to the upper end of the bottom plate 12 as a power source. The motor 41 is composed of, for example, an electric motor, and is a hydraulic shovel. It is connected to a battery provided on one side via a cable (neither is shown). A drive pulley 42 is attached to the output shaft 41A of the motor 41, and the rotation of the motor 41
2. The power is transmitted to the brush 39 via a power transmission mechanism 43 and a driven pulley 40 described later.

Reference numeral 43 denotes a power transmission mechanism provided between the drive pulley 42 on the motor 41 side and the driven pulley 40 on the brush 39 side.
4, each intermediate pulley 45, 46, each belt 47, 48 and the like.

Reference numeral 44 denotes the left side edge 32 and the arm 3
6 and a cylindrical sleeve rotatably provided on the outer peripheral side of the shaft 34 via a slide bearing or the like (not shown). , Two intermediate pulleys 45 and 46 are fixed. The sleeve 44 rotates integrally with the intermediate pulleys 45 and 46 about the shaft 34.

Reference numeral 47 denotes a belt wound around the driving pulley 42 and one intermediate pulley 45, and reference numeral 48 denotes the other intermediate pulley 4.
6 and a belt wound around a driven pulley 40, and a motor 4
The rotation of 1 is transmitted to the driven pulley 40 through the driving pulley 42, the belt 47, the intermediate pulley 45, the sleeve 44, the intermediate pulley 46, and the belt 48, so that the brush 39 rotates.

A motor cover 49 is provided between the side edges 32 and 33 so as to extend leftward and rightward to protect the motor 41 and the like. The motor cover 49 covers the motor 41, the driving pulley 42 and the like. Things.

Reference numeral 50 denotes a first belt cover provided on the inner surface of the side edge 32 so as to extend upward and downward to protect the belt 47 and the like. As shown in FIG. The belt 47 and the upper cover 50A that covers the upper half of the intermediate pulley 45, and the lower cover 50B that covers the lower half of the intermediate pulley 45 continuously to the upper cover 50A are configured to be separable.

Reference numeral 51 denotes a second belt cover provided so as to extend along the arm 36 to protect the belt 48 and the like. As shown in FIG. The upper cover 51A covers the lower half of the intermediate pulley 46, the belt 48, and the driven pulley 40.

The bucket 31 according to the present embodiment has the above-described configuration. When cleaning the road surface using the bucket 31, first, the left and right arms 3 are used.
The brushes 39 are rotated around the shafts 34 and 35, and the brush 39 is arranged at the working position on the tip side of the claw plate 20.

Next, as shown in FIGS. 7 and 9, a positioning bolt 38 is screwed into a bolt hole 33A of the side edge 33, and the tip of the positioning bolt 38 is inserted into a bolt insertion hole 37A of the arm 37. Thus, the brush 39 is fixed at the above-described working position.

After the brush 39 is fixed at the working position, the motor 41 is operated to transmit the rotation of the motor 41 to the rotating shaft 39A of the brush 39 through the driving pulley 42, the power transmission mechanism 43, and the driven pulley 40. And
The brush 39 rotates on the tip side of the claw plate 20.

Next, the bucket 31 is moved forward and backward in parallel with the road surface 23 while the rotating brush 39 is in contact with the road surface 23 to be cleaned. Thus, for example, the sediment deposited on the road surface 23 and solidified can be broken by the brush 39, and the weeds that have grown on the road surface 23
9 can be cut off.

As described above, after the sediment, weeds, and the like on the road surface 23 are crushed into small pieces by using the brush 39, the claw plate 20 can surely scoop them into the bucket 31. In addition, fine garbage, mud,
Even when dust such as fallen leaves is scattered on the road surface 23, the bucket 39 is rotated by the brush 39 that rotates the fine dust.
1 can be forcibly swept into the road 1, and the cleaning work of the road surface 23 can be performed more efficiently.

On the other hand, for example, the nail plate 2
In the case of performing the cleaning operation using only 0, the positioning bolt 38 is removed from the bolt hole 33A of the side edge 33, and then the left and right arms 36 and 37 are rotated about the shafts 34 and 35, and the brush is removed. 39 is moved from the work position shown by the solid line in FIG. 9 to the storage position shown by the two-dot chain line.

Then, the positioning bolt 38 is screwed into the bolt hole 33B of the side edge 33, and the tip of the positioning bolt 38 is inserted into the bolt insertion hole 37A of the arm 37. The cleaning operation can be performed using only the claw plate 20.

In each of the above-described embodiments, the case where the base end side of the reinforcing plate 21 is attached to the cutting edge 17 using the bolt 22 has been described as an example, but the present invention is not limited to this. For example, it may be configured to be attached to the side edges 15, 16 or the like.

Further, in the above-described second embodiment, the case where an electric motor is used as the motor 41 for rotating the brush 39 has been described as an example. However, the present invention is not limited to this. A configuration using a motor or the like may be adopted.

[0063]

As described in detail above, according to the first aspect of the present invention, the nail plate is sandwiched between the cutting edge on the base end side and the elastic plate attached to the cutting edge. The tip end protrudes from the cutting edge and a reinforcing plate is provided to reinforce the free end of the claw plate. Then, the free end of the claw plate is prevented from being turned up from the ground by the reinforcing plate and can be pressed against the ground side, and the sediment, weeds and the like can be scraped off from the ground by the claw plate. Therefore, not only dust such as dirt, muddy soil, and defoliation falling on the ground, but also sedimentary sediment and weeds can be scooped using the nail plate. It is possible to efficiently perform a cleaning work on a road surface with a gap.

According to the second aspect of the present invention, the comb plate is provided on the front end side of the reinforcing plate with a plurality of plate-like pieces arranged in a comb-like shape in the left and right directions. When the free end of the claw plate is deformed according to the uneven shape of the ground, each plate-like piece constituting the comb-teeth portion of the reinforcing plate is elastically deformed along with the deformation of the claw plate while the free end of the claw plate is grounded. Can be pressed against the side.
For this reason, the gap between the free end of the claw plate and the ground can be reduced and the adhesion between them can be increased, and the claw plate can be reliably scooped without leaving dust and the like on the uneven ground. Can be.

According to the third aspect of the present invention, the brush is provided on the tip side of the claw plate and extends left and right along the claw plate and is rotated by the power supplied from the power source. Use a brush to crush the sediment that has settled on the ground and use a brush to cut off the weeds that have grown on the ground. Can be. Further, dust that cannot be scooped by the nail plate alone, such as fine dust, muddy soil, and fallen leaves scattered on the ground, can be efficiently swept into the bucket by the brush.

According to the fourth aspect of the present invention, the brush is provided on the distal end side of the arm rotatably supported on each side edge, and the brush is provided on the distal end side of the claw plate. It is configured to move between the storage position stored between the side edges, so that, for example, when cleaning the ground using only the nail plate without using a brush, the brush is stored without obstructing the nail plate. Can be stored in the location.

[Brief description of the drawings]

FIG. 1 is an external view showing a hydraulic excavator to which a bucket according to a first embodiment of the present invention is attached.

FIG. 2 is a perspective view showing a single bucket according to the first embodiment.

FIG. 3 shows a claw plate, a reinforcing plate, and the like attached to the bucket in FIG.
FIG. 3 is a front view as viewed from the opening side of FIG.

FIG. 4 is an enlarged cross-sectional view of main parts such as a cutting edge, a claw plate, a reinforcing plate, and the like, as viewed from the direction of arrows IV-IV in FIG.

FIG. 5 is a front view of the state in which the claw plate and the reinforcing plate are deformed according to the uneven shape of the road surface, as viewed from the same position as in FIG. 3;

FIG. 6 is a perspective view showing a single bucket according to a second embodiment.

FIG. 7 is a front view of the bucket according to the second embodiment as viewed from the opening side in FIG. 6;

FIG. 8 is a left side view of the bucket according to the second embodiment.

FIG. 9 is a right side view of the bucket according to the second embodiment.

10 is a cross-sectional view of a side edge, a belt cover, and the like in FIG.

FIG. 11 shows an arm, a belt cover and the like in FIG.
It is sectional drawing which expanded from XI direction.

[Explanation of symbols]

 12 Bottom plate 13,14 Side plate 15,16,32,33 Side edge 17 Cutting edge 20 Claw plate 20C Free end 21 Reinforcement plate 21B Comb tooth part 21C Plate 36,37 Arm 39 Brush 41 Motor (power source)

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Katsuhiro Sasaki 1-2, Sasugaoka, Mizuguchi-machi, Koka-gun, Shiga Prefecture F-term in Hitachi Construction Machinery Tierra Shiga Plant (reference) 2D012 GB00 2D015 JA02 2D026 AB02

Claims (4)

[Claims] 1. A bottom plate, side plates provided on both left and right sides of the bottom plate, side edges provided on an opening side of each side plate, and a tip of the bottom plate located between the side edges. A cutting edge provided on the cutting edge, and a claw plate made of an elastic body whose base end is attached to the cutting edge and whose distal end is a free end and protrudes from the cutting edge. A bucket configured to sandwich the claw plate with an edge and to provide a reinforcing plate protruding from the cutting edge at a tip end side to reinforce a free end of the claw plate. 2. A comb-shaped part comprising a plurality of plate-shaped pieces arranged in a comb-like shape in the left and right directions on the distal end side of the reinforcing plate to elastically press the free end of the claw plate toward the ground. The bucket according to claim 1, wherein the bucket is provided. 3. A brush which extends leftward and rightward along the claw plate and is rotatable by power supplied from a power source is provided on a tip side of the claw plate.
The bucket described in. 4. The brush is provided at a distal end of an arm rotatably supported by each of the side edges, and is stored between a working position disposed at a distal end of the claw plate and each of the side edges. 4. The bucket according to claim 3, wherein the bucket moves between the storage position and the storage position.