JP6052941B1 - Attachment for soil removal treatment - Google Patents

Abstract

A hydraulic excavator having a gripping mechanism at the tip of an arm, which can be held and fixed without replacing the gripping mechanism, and also has a soil removal treatment attachment that enables precise leveling, snow removal, and the like. provide. A soil removal treatment attachment that can be held and fixed by a gripping mechanism G1 at the tip of an arm of a hydraulic excavator, wherein the attachment A is connected to a straight grounding edge 112 having a predetermined length, and a soiling connected to the grounding edge. It is comprised from the surface 111 and the to-be-gripped part 120 of the said holding mechanism which can hold | maintain this earth removal surface in a substantially standing state. Note that the gripping mechanism is a grapple that has two claws and three claws closed. In addition, the gripping portion is provided with an engaging portion 123 that engages with the claw Gf of the gripping mechanism, and a coupling mechanism 130 that can be rotated and fixed with the vertical axis when the earthing surface is grounded as a rotation axis. Arrange. Furthermore, you may form the bucket which opened the upper surface side at the back surface side of the said soil removal surface. [Selection] Figure 1

Description

  The present invention relates to a soil removal treatment attachment that can be held and fixed by a general gripping mechanism disposed at the tip of an arm of a hydraulic excavator and that exhibits a soil removal function by operation of the hydraulic excavator.

  Conventionally, a hydraulic excavator, which is an earthwork vehicle, can perform various operations in addition to excavation work by replacing the bucket at the tip of the arm with an appropriate attachment. For example, if the tip of the arm is replaced with an attachment of a gripping mechanism (or a clamping mechanism, commonly known as a grapple), it is possible to dismantle a wooden house, grasp and transport a wood in forestry, and further peel off.

  On the other hand, in the dismantling work by the hydraulic excavator and the transportation work in the forestry, soil removal work such as leveling and snow removal may be required in parallel. For example, this is a case where maintenance of a temporary road for transporting demolishing materials at the time of demolishing a house, road maintenance for snow transportation, snow removal, and the like are performed simultaneously.

  When performing such simultaneous work, the leveling work is usually performed using a soil removal device (commonly known as a blade) as a front attachment, which is arranged on the front side of the vehicle of the hydraulic excavator. However, because the conventional excavator earthmoving device is positioned as an accessory device, it is not suitable for efficient earthing work compared to dedicated earthwork vehicles such as bulldozers, wheel loaders or motor graders. It was.

  For this reason, a soil removal device for a front attachment that enables more efficient soil removal work even with a hydraulic excavator has been developed. For example, Cited Document 1 discloses a soil removal device in which a soil-and-sand side guide portion including a laterally inclined surface is formed on the rear surface side of the soil-discharging plate. In the soil leveling operation in which the soil removal device is pulled while retreating, the soil removal device suppresses spilling down to the front surface side where the soil has been leveled after the rear surface of the soil removal plate has risen.

  Further, in Cited Document 2, the auxiliary earth discharge plate is expanded according to the work situation to change the overall height of the earth removal plate, thereby preventing the earth and sand from spilling to the rear side of the earth removal plate, Discloses a soil removal device that can reduce the blind spot from the cab side.

  On the other hand, unlike these cited references 1 and 2, a method of replacing the attachment itself at the end of the arm with a dedicated earth removing device has been adopted. For example, cited document 3 discloses a soil removal device that replaces the tip of an arm instead of a bucket.

JP 2001-40893 A JP-A-10-54050 Japanese Utility Model Publication No. 2-47249

  However, the soil removal apparatus for the front attachments of Cited Documents 1 and 2 and the attachment for bucket replacement of Cited Document 3 have the following problems.

  First, since the earth removal apparatuses of the cited documents 1 and 2 perform the earth removal work by moving the excavator on which the earth removal plate is arranged back and forth, the earth removal work can only be performed in one direction. For this reason, in a small site, the direction change and the angle correction of the soil removal surface must be repeated many times, and there was a problem in usability. Moreover, in the earth removal apparatus of the cited documents 1 and 2, a precise operation for forming inclined surfaces (for example, slopes) on both sides of the passage was almost impossible.

  On the other hand, since the attachment of the cited document 3 is attached to the tip of the arm, it is suitable not only for earth removal work but also for precise work such as formation of an inclined surface. However, it is necessary to replace the gripping mechanism at the tip of the arm of the hydraulic shovel separately with an attachment for soil removal, which increases not only the complexity of the replacement work but also the replacement time, and the overall work efficiency is significantly reduced. is what happened.

  Accordingly, the present invention has been made paying attention to such a problem, and in a hydraulic excavator in which a gripping mechanism is disposed at the tip of an arm, it can be held and fixed without replacing the gripping mechanism, Provided is an attachment for soil removal processing that enables work such as snow removal.

  In order to solve the above-described problems, the soil removal treatment attachment according to the present invention is configured as follows.

That is, an attachment for soil removal treatment that can be detachably held by a gripping mechanism that is a grapple having a form in which a connecting rod is disposed between claws disposed at the tip of an arm of a hydraulic excavator , and a three-nail claw. A straight grounding edge having a predetermined length, a soil removal surface connected to the grounding edge, and a gripped portion of the gripping mechanism that enables the soiling surface to be held substantially upright. Thus, the gripped part is characterized in that an engaging part is formed which has a fixing means for positioning and fixing with the claw of the gripping mechanism .

The grapple as the gripping mechanism is a form in which the two claws and the three claws in which the connecting rods are disposed between the claws as described above are closed. This grapple is mainly used for dismantling work such as a wooden house. It has been.

Further, as a specific mode of the fixing means of the engaging portion, it is composed of one or two pairs of engaging plates that are fitted to the claws of the gripping mechanism, and between the engaging plates, the outer side of the claw portion of the connecting rod is provided. It is the structure which fastens with the bolt which passes.

  Further, the grasped portion is characterized in that a vertical axis when the earthing surface is in contact with the ground is used as a rotation axis, and a coupling mechanism that can be fixed at an appropriate rotation position around the rotation axis. . This coupling mechanism is characterized in that it is a structure of joining by rotating relative flanges of the facing flanges.

  In addition, the back surface side of the soil discharge surface is formed in a bucket shape. Specifically, it is a form in which a bucket having an upper surface opened on the back surface side of the soil discharge surface is formed.

  The soil removal treatment attachment having the above structure can be held and fixed by simply holding it with a general holding mechanism of a hydraulic excavator, and after holding, precise earth removal work, excavation, excavation soil transfer, etc. It is possible to perform high-level work in general soil disposal.

  For this reason, it is possible to perform soil removal work that is difficult with the front attachment of conventional hydraulic excavators between the main dismantling work of the gripping mechanism without the need to replace the gripping mechanism with a dedicated soil removal device or dedicated bucket. It becomes. Thereby, the working efficiency by the hydraulic excavator is greatly improved.

  Further, by providing a plurality of variations in the shape of the soil removal surface portion and the gripped portion of the soil removal treatment attachment, it is possible to use for a plurality of types of gripping mechanisms. As a result, it can be used at various sites where a hydraulic excavator equipped with a gripping mechanism works, for example, a demolition site such as a house, or a forestry work site, and the usability of the entire hydraulic excavator equipped with a gripping mechanism is greatly improved. Will do.

It is a perspective view which shows the external appearance of the attachment for a soil removal process of the present Example 1. FIG. It is a perspective view which shows the state which the holding mechanism of the hydraulic excavator hold | gripped the soil removal process attachment of the present Example 1. FIG. FIG. 3 is a plan view (A) of FIG. 2 and a cross-sectional view along line AA ′ (B). It is a center longitudinal cross-sectional view of the attachment for earth removal processing of the present Example 1. FIG. It is a perspective view explaining the effect | action of the coupling | bonding mechanism of the attachment for earth removal processes of the present Example 1. FIG. It is explanatory drawing which shows the use condition of the attachment for a soil removal process of the present Example 1. FIG. It is a perspective view which shows the external appearance of the attachment for a soil removal process of the present Example 2. FIG. It is a perspective view which shows the external appearance of the attachment for a soil removal process of the present Example 3. FIG.

  Below, the attachment for soil removal processing (hereinafter abbreviated as “attachment”) according to a plurality of embodiments of the present invention will be described in detail with reference to the drawings for each embodiment.

  In the following description, the top and bottom of the drawing are defined as “upper and lower” of the attachment, the left of the drawing is defined as “front”, and the right is defined as “rear”. In addition, a direction in which the attachment attached to the hydraulic excavator is pushed and moved on the ground surface to be discharged is defined as a “soil discharging direction”.

  A symbol A in FIG. 1 is an attachment according to the first embodiment. This attachment A is gripped by a gripping mechanism G1, which is a kind of attachment disposed at the tip of an arm of a hydraulic excavator E, and is gripped by a so-called grapple, and is moved in the soil removal direction in this state, and with this, leveling, snow removal, etc. It is used for the earth removal processing of

  This attachment A mainly includes a soil removal portion 110 having a soil removal surface 111 on the front side, and a cover disposed on the upper side of the soil removal portion 110 so that the soil removal portion 110 can be held substantially upright. The gripping unit 120 includes a coupling mechanism 130 that links the earth discharging unit 110 and the gripped unit 120 together. Note that the coupling mechanism 130 is interposed between the soil discharging part 110 and the gripped part 120.

  First, the soil removal portion 110 has a rectangular box shape formed by joining metallic hard plates, and the front side surface on the long side to be erected is set as the soil removal surface 111. A grounding edge 112 is disposed on the lower end side of the soil removal surface 111. One of the grounding edges 112 protrudes obliquely downward in the soil removal direction (arrow M), and the other side is continuous with the soil removal surface 111.

  As described above, the gripped portion 120 is disposed on the upper side of the soil removal portion 110 via the coupling mechanism 130. The gripped portion 120 is configured by disposing a cylindrical body 122 having an axis perpendicular to the axial direction of the support portion 121 on the upper end of a rectangular cylindrical support portion 121 integrated with a flange 132 of the coupling mechanism 130 described later. doing. The cylindrical body 122 has a circular cross section, and its longitudinal direction is substantially parallel to the soil removal surface 111.

In addition, a plurality of engagement plates 123, 123 opposed to each other in the vertical direction are disposed on both sides of the side surface of the cylindrical body 122. The engagement plate 123 is a set of plates that are vertically opposed to each other, and functions as an engagement portion that fixes the positioning and gripping state of the claw Gf of the gripping mechanism G1 that grips the cylindrical body 122.

First, as a positioning function, as shown in FIG. 2, the upper and lower sets of engagement plates 123 are inserted between the claws Gf. Since the normal gripping mechanism G1 is a combination of two claws Gf and three other claws Gf, the number of sets of engagement plates 123 is one set on the two claws side and two on the three claws side. Set. Since the connecting rod Gr is disposed between the claws Gf as a fixing function in the gripping state, the bolt 124 is passed between the engagement plates after gripping the cylindrical body 122 and then fastened with the nut 125. The rod Gr is surrounded by a bolt 124 and a cylindrical body 122.

  A coupling mechanism 130 is interposed between the soil discharging part 110 and the gripped part 120. The coupling mechanism 130 includes a rectangular cylindrical base 131 disposed on the upper surface side of the soil removal portion 110 so that the vertical axis when the ground removal surface 111 is grounded becomes the rotation axis T, and a plurality of bolt holes at the upper end portion. Are formed on the inner side of the flange 132 of the same shape disposed on the lower end side of the support portion 121 disposed on the lower surface side of the gripped portion 120, and the flange 132 of the support portion 121. It comprises a hanger 133 that is hooked to hold the flange 132 of the base 131 suspended, and a bolt 134 and a nut 135 that are fastened to join the flanges 132 and 132 together.

  The hanger 133 includes an upper board 133a that contacts the upper surface of the upper flange 132, a suspension bolt 133b that passes through the upper board 133a and is fixed in the same direction as the rotation axis T by fastening a nut 133d, and a lower end of the suspension bolt 133b. And a lower plate 133c that is in contact with the lower surface of the lower flange 132 by fastening the nut 133d to the lower plate 132. The hanger 133 is assembled by forming insertion holes 121a and 131a that can reach the upper board 133a and the lower board 133c on the side surfaces of the support part 121 and the base part 131.

  As shown in FIG. 4, the coupling mechanism 130 configured as described above can set a desired angle between the soil removal surface 111 and the cylindrical body 122 by the following procedure. First, when the fastening of the bolt 134 and the nut 135 that joins both the flanges 132 and 132 is loosened, the soil removal unit 120 descends (arrow a) due to its own weight, so that the hanger 133 has a hanging bolt length between the two flanges. A pre-adjusted gap b is created. Moreover, when the gap adjustment is not performed in advance, the gap 133 is formed by loosening the nut 133d of the suspension bolt 133b. In this state, the bolt 134 and the nut 135 are completely removed and the angle is adjusted by rotating the earthing portion side and the gripped portion side relative to each other (arrow c), and then the bolt 134 and the nut 135 are fastened again to tighten both flanges 132. , 132 are joined. With the configuration of the coupling mechanism 130, the soil removal surface 111 and the cylinder 122 are not completely separated by the hanger 133, and the angle can be adjusted and set safely.

Next, the operation of the attachment A according to the first embodiment will be described.
First, the cylindrical body 122 of the gripped portion 120 of the attachment A is gripped by the gripping mechanism G1 already disposed in the hydraulic excavator E. In this case, the two claws side of the gripping mechanism G1 grips one set of engagement plates 123 on the front side of the cylindrical body 122, and the three claws side grips two sets of engagement plates 123 on the downstream side. Further, if necessary, the engagement plate may be fastened with a bolt 124 and a nut 125 to obtain a stronger gripping state.

  Next, the hydraulic excavator E is operated as appropriate, and the earth removal surface 111 of the earth removal part 110 is moved in the earth removal direction M and pushed out against earth and sand (hereinafter referred to as “earth and sand”) to perform the earth removal work. In this work, leveling and snow removal work will be carried out. Here, since the ground contact edge 112 is disposed on the soil discharge surface 111, the earth and sand are pushed up along the soil discharge surface 111 and pushed out. Further, if the soil removal direction M is slightly downward, the ground surface can be excavated. Furthermore, depending on the arm operation of the hydraulic excavator E, an inclined surface such as a slope can be formed, and more advanced soil removal processing can be performed. Note that the angle adjustment of the soil removal surface 111 by the coupling mechanism 130 may be appropriately performed before the soil removal operation or between the soil removal operations.

  Reference numeral B in FIG. 7 is an attachment according to the second embodiment. This attachment B is a form in which the coupling mechanism 130 is omitted as compared with the attachment A of the first embodiment.

This is because, depending on the variation of the gripping mechanism of the hydraulic excavator E, there is a grapple of a type for gripping a plurality of timbers that are closed by connecting two claws provided with a pivot axis Gt on the tip side as shown in the figure. Example 2 will be described as a reference example of an attachment suitable for such a gripping mechanism G2.

  However, since such a gripping mechanism G2 has a large gripping force and the hydraulic excavator E on which the gripping mechanism G2 is disposed tends to be larger in size, the soil removal unit 210 is enlarged and the gripped unit 220 is gripped by the gripping mechanism G2. It is necessary to adapt and reinforce the nail shape.

  Specifically, as shown in the drawing, while holding both sides of the cylindrical body 221 of the gripped portion 220 with the support plates 223, the lower side of the cylindrical body 221 is an arc adapted to the claw shape, and the upper surface side Is formed on the flat surface 222 so as to improve the contact property of the gripping mechanism G2 with the base frame Gb. In addition, a triangular auxiliary plate 224 serving as a rib that reinforces the integrity of the gripped portion 220 and the soil discharging portion 210 is disposed outside the support plate 223.

  Reference numeral C in FIG. 8 is an attachment according to the third embodiment. Compared with the attachment A of the first embodiment, the attachment C omits the coupling mechanism 130 and includes a soil removal surface 311 and a grounding edge 312 in the soil removal portion 310 and a predetermined capacity on the back surface side of the soil removal surface 311. The bucket portion 313 is formed.

  On the other hand, in the gripped portion 320, the cylindrical body 321 and the engagement plate 322 have the same configuration as the attachment A of the first embodiment, but are attached to both sides of the cylindrical body 321 to fix the cylindrical body 321 and the bucket portion 313. In order to reinforce this fixing, a plate 323 is provided, and an auxiliary plate 324 orthogonal to the soil removal surface 311 is provided on both sides of the mounting plate 323.

In addition, the gripped portion 320 of the attachment C is provided with the engagement plate 322 having the same configuration as that of the first embodiment as described above, and the positioning and gripping state of the claw Gf of the gripping mechanism G1 that grips the cylindrical body 321. Is fixed .

  Since the attachment C has a function of conveying excavation, earth and sand, etc. by arranging the bucket portion 313 in addition to the soil removal processing, the attachment C is suitable for use with a medium- to large-sized hydraulic excavator with higher power. Further, like the attachment B, the gripping mechanism G1 is preferably provided with a turning axis Gt.

A Attachment (Example 1)
DESCRIPTION OF SYMBOLS 110 Earth removal part 111 Earth removal surface 112 Ground edge 120 Grasping part 121 Support part 121a Insertion hole 122 Cylindrical body 123 Engagement plate 124 Bolt 125 Nut 130 Coupling mechanism 131 Base part 131a Insertion hole 132 Flange 133 Hanger 133a Upper board 133b Suspension bolt 133c Lower board 133d Nut 134 Bolt 135 Nut B Attachment (Example 2)
210 Excavating part 220 Grasping part 221 Cylindrical body 222 Flat surface 223 Support plate 224 Auxiliary plate C Attachment (Example 3)
310 Excavating part 311 Excavating surface 312 Grounding edge 313 Bucket part 320 Grasping part 321 Cylindrical body 322 Engaging plate 323 Mounting plate 324 Auxiliary plate E Hydraulic excavator G1 Holding mechanism Gf Claw Gr Connecting rod G2 Holding mechanism (another form)
Gt Rotating shaft Gb Base frame M Earthing direction T Rotating shaft

Claims (5)

An attachment for soil removal treatment that can be detachably held by a gripping mechanism that is a grapple in a form in which a coupling rod is disposed between claws disposed at the tip of an arm of a hydraulic excavator and three claws are closed. ,
A linear ground edge of a predetermined length;
A soil removal surface connected to the ground edge;
A gripped portion of the gripping mechanism capable of holding the soil removal surface in a substantially standing state; and
Ri consists of,
An attachment for soil disposal processing , wherein the gripped portion is formed with an engaging portion that is fitted with a claw of the gripping mechanism and includes a fixing means for positioning and fixing . The fixing means of the engaging portion is composed of one or two pairs of engaging plates that fit with the claws of the gripping mechanism, and the engagement plates are fastened with bolts that pass outside the hook portions of the connecting rod. The attachment for earth removal processing according to claim 1, wherein the attachment is provided. 3. The soil removal process according to claim 1 or 2, wherein the gripped portion includes a coupling mechanism that can be fixed at an appropriate rotational position with a vertical axis at the time of ground contact of the soil removal surface as a rotation axis. attachment. The attachment for soil removal processing according to claim 3, wherein the coupling mechanism is joining by rotating relative flanges of facing flanges. The attachment for soil removal processing according to claim 1, 2, 3, or 4, wherein the back surface side of the soil removal surface is formed in a bucket shape.

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