JP6492237B1 - Adapter with fork grapple - Google Patents

Abstract

An object of the present invention is to provide a dedicated adapter capable of efficiently removing deposits inside a side groove and further removing and attaching a side groove lid to a fork grapple disposed at an end of an arm of a hydraulic shovel.
An adapter includes base parts 2 and 3 attached to the back side of the claw part of a fork grapple G, an extension state from the tip of the fork grapple at the time of attachment, and a bottom surface and both side wall surfaces. It comprises a bucket portion 4 and an engagement piece which is formed so as to extend from the tip end edge thereof and which is disposed so as to be insertable into the notch portion of the side groove lid. The engaging piece is detachable, and in a facing state when the fork grapple is open, the engaging piece is disposed in a bent shape at the tip end of the bucket so as to be insertable into the notch of the lid. The opposing bucket parts are formed such that one side wall of the bucket is inserted in close proximity to the inner surface of the opposite side wall, and a plurality of corner parts 41 are formed at the edge of each side wall.
[Selected figure] Figure 1

Description

  The present invention relates to an adapter mounted on a fork grapple disposed at an end of an arm of a hydraulic shovel, and more particularly to an adapter used for removing deposits inside a gutter of a U-shaped structure and removing a lid for the gutter. .

  2. Description of the Related Art Conventionally, hydraulic excavators, which are earthworking vehicles, have been able to perform various operations in addition to digging operations by replacing the bucket at the tip of the arm with an appropriate attachment. For example, replacing the object with a fork grapple that has the function of grasping, transporting, grasping and destroying the object by the pinching operation of the fork-like claws disposed opposite to each other, and disassembling the house or grasping and conveying wood in forestry There was a case to do.

  Moreover, in the general grapple apparatus including the above-described fork grapple, an adapter for exclusive use is separately attached, and in addition to normal work (gripping, cutting, etc.), separate work is possible.

  For example, Patent Document 1 discloses a dedicated adapter that allows two simple buckets to be removably disposed inside the claws for scissors, and allows the claws to scoop and remove the crushed material after crushing. It was disclosed.

  Further, also in Patent Document 2, a boat-like bucket is detachably disposed from the outside with respect to one claw portion of a grapple for holding a wood, and in addition to the wood conveyance, scoops of earth and sand and gravel are raised. A dedicated adapter has been disclosed that enables land preparation.

Japanese Utility Model Application Publication No. 5-66163 JP, 2005-213005, A

  By the way, the gutter of the U-shaped structure which is a connection type drainage is usually laid by the side of a paved road. Since inside of the gutter, sand, sludge, fallen leaves, etc. are deposited by the external environment such as wind and rain to prevent drainage, it has been necessary to periodically clean such deposits.

  In addition to the difference in the size of the gutters, there was also a specification that provided a dedicated lid. In the side groove in which the lid is installed, although the amount of stagnant matter such as earth and sand is small as compared with the case without the lid, the lid has to be removed once for the removing operation. The lid is often made of a heavy material made of concrete or metal (grating or the like) in consideration of durability and stability, and the attachment and detachment of the lid has been a considerable labor. Furthermore, the case where the mud and the earth and sand adhere to the crevice around the lid by long-term use was a further thing.

  In view of such a situation, although there has been a dedicated lid attachment / detachment device which is conventionally performed utilizing the principle of leverage, it has not been possible to remove the deposits inside the gutters.

  In the case of a hydraulic shovel equipped with a grapple apparatus equipped with a simple bucket shown in Patent Document 1 or a grapple apparatus equipped with a boat-like bucket disclosed in Patent Document 2, work such as removal of a side groove lid is Although it is impossible to do so, the width size of the side groove must be matched, but only the removal operation of the internal deposit was possible. However, since the bucket configuration in each document is not specialized for removing deposits inside the gutters, the capacity is small and usability is poor, and efficient removal work is difficult.

  Therefore, the present invention is created based on the above background, and the existing fork grapple disposed as an attachment at the end of the arm of the hydraulic shovel is used as it is without replacing it, and the inside of the side groove of U-shaped structure is used. It is an object of the present invention to provide a fork grapple-mounted adapter which enables efficient removal of deposits and removal and attachment of side groove lids.

  In order to solve the above-mentioned problems, an adapter for mounting a fork grapple according to the present invention (hereinafter abbreviated as "adapter") is configured as follows.

  That is, the adapter is formed so as to extend from the tip end of the fork grapple when the base portion is attached to the base portion attached to the back surface side of the opposed fork grapple claws, and has the bottom and both side wall surfaces It is formed to be able to be inserted into a bucket part having a shape opened to the side, a shape extending from the tip end of the bucket part, and a through hole formed in a lid for a side groove or notches at both longitudinal ends. And an engaging piece. It is preferable that the engagement piece is appropriately detachable, and may be configured to be able to retract only a portion extending from the tip end edge of the bucket portion. In addition, the lid for the above-mentioned gutter is a concept including the lid made of concrete and metal grating which are arranged in the gutter.

  In the attachment of the engagement piece, the bucket portion can be inserted into the through hole of the lid or the notch at the longitudinal end while maintaining the distance between the opposed engagement pieces by opening the fork grapple. It is characterized in that it is bent at a predetermined angle at the tip end of the. In particular, in consideration of the insertability into the through hole or the like, it is preferable to form an angle at which the extension portions of the engagement pieces face in parallel.

  Further, in the closed state of the pinching operation of the fork grapple, both side walls of one of the bucket portions are formed so as to be in close proximity and intruded into the inner surfaces of both side walls of the opposing bucket portion. That is, the length of the width of the both side walls on one side of the above-mentioned bucket part is formed in the length which enters inside between the both-sides wall of the other bucket part. As a result, even if the opposing bucket portions are close to each other, one bucket portion can partially enter the other bucket portion without collision of both side walls, and a space of a predetermined capacity can be formed by the two bucket portions. It becomes.

  Furthermore, it is characterized in that a plurality of corner portions are formed at the edge portions of both side walls of the bucket portion. The corner is a so-called sawtooth-like element, and the peaks and valleys thereof are preferably formed so as to be mutually offset when the bucket is rotated to the opposite position. The proximity and overlap of the corners enable cutting of wood and the like.

  In addition, the above-mentioned base portion is characterized in that a plate blade for pinching and cutting is disposed so as to be in a state of extending to the opposite side from between the claws when the fork grapple is attached. The plate blade is disposed in parallel to the claws, and may be a plurality of sheets.

  The adapter of the said structure can make an engagement piece into a parallel facing state, maintaining predetermined | prescribed space | interval by operation of the conventional fork grapple, The facing part comprises a vertical surface. Therefore, the engaging piece can be inserted into the notch at the both ends of the lid disposed in the side groove of the U-shaped structure, or through the through hole of the grating, and further, the lid or grating is held by the engaging piece and lifted and removed Not only that, but it is also possible to attach it to the original position.

  Also, by removing the engagement piece extending from the tip end edge of the bucket portion or retracting only the extension portion from the tip end edge of the bucket portion, the two bucket portions can be advanced inside the side groove, and the opening / closing operation thereof It also enables the removal of deposits inside the gutters.

  Furthermore, it is also possible to cut wood etc. by the corner formed in the bucket part or the plate blade disposed in the base part, for example, it becomes possible to perform the puncturing work etc. above the side groove, and suitable in the deposit removal work of the side groove It will also be possible to improve the environment.

It is a perspective view showing the appearance of the adapter concerning the present invention. It is a side view which shows the mounting state to the fork grapple arrange | positioned by the hydraulic shovel of the adapter which concerns on this invention. It is a center longitudinal cross-sectional view of an adapter concerning the present invention. It is an assembly perspective view (A) and (B) of an adapter concerning the present invention. It is a perspective view (A) and (B) which shows the removal operation of the lid | cover of the adapter based on this invention. It is a fragmentary sectional view (A) and (B) showing variation of an engagement piece of an adapter concerning the present invention. They are the perspective view (A) which shows the deposit removal operation | work inside the side groove | channel of the adapter which concerns on this invention, and the perspective view (B) which shows pruning operation | work which is the prior operation.

  BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of an adapter according to a plurality of embodiments of the present invention will be described in detail below based on the drawings. In the following description, the upper and lower sides of the drawing are used as "upper and lower" of the adapter.

  Reference numeral 1 in FIG. 1 denotes an adapter according to the present embodiment. The adapter 1 is attached to a predetermined portion of a fork grapple G, which is a type of attachment disposed at the end of an arm of a hydraulic shovel E that is a construction machine, and enables specific operations mainly for the side grooves of U-shaped structure Adapter dedicated to

  As a basic configuration of the adapter 1 of the present embodiment, a pair of base parts 2 and 3 attached to both claw parts Gf opened and closed by the pinching operation of the fork grapple G, and a tip end side of each base part 2 and 3 They are the bucket part 4 to form, and the engagement piece 5 arrange | positioned detachably at the further front end side of each bucket part 4. FIG.

  First, the base parts 2 and 3 are attached from the back side to both claw parts Gf of the fork grapple G which is disposed oppositely and opened and closed by the pinching operation, and forms a pair and part of the size and shape There are two aspects that are different. This is a configuration in which a normal fork grapple G has two claws arranged in parallel on one side, and three claws arranged in parallel on the other side and the tip sides are interconnected by a connecting rod Gr and integrated. It is for corresponding. In addition, such a shape of the fork grapple G firmly grips, breaks, or cuts the object by avoiding a collision of the claws Gf at the time of closing and obtaining a predetermined overlapping margin between the claws Gf. Is adopted to

  With regard to the base portions 2 and 3 of the above two embodiments, the base portion attached to the two claws side of the fork grapple G is referred to as "two claw base portion 2" and the base portion attached to the three claws side is "three claws It is referred to as "base part 3" and will be used in the following description.

  It is common that the base portions 2 and 3 are formed of a metallic hard material into a U-shaped cross section having a bottom plate and both side walls. On the other hand, the two-nail base portion 2 has a shape that covers all the two claws from the back outer side, and the three-claw base portion 3 makes the side walls abut against the inside of both outer claws of the three claws It forms in the shape which covers the whole from the back side outside. Further, in the three-nail base portion 3, notches 31 which avoid interference with the connection rod Gr are formed on both side walls.

  Here, the width dimension of both side walls of the two-nail base portion 2 is shorter than the width dimension of both side walls of the three-nail base portion 3, specifically, the both side walls of the two-nail base portion 2 have three claw bases The width dimension is set to fit inside the both side walls of the part 3. Therefore, a part of both side walls of the bucket part 4 by the side of 2 nail base parts mentioned below will be closely superimposed on the inner surface of both sides of the bucket part 4 by the side of 3 nail base parts, and will enter.

  In each of the base portions 2 and 3, a rectangular plate-shaped blade 21 is disposed in the vertical direction of the inner surface of the bottom plate. The two claw base portion 2 has one plate blade 21 disposed at the center between the claw portions so as to be parallel to each claw, and the three claw base portion 3 has two plate blades 21 between the claw portions It is arranged in parallel. The plate blade 21 is set so as to protrude to the opposite side higher than the side walls of each of the base portions 2 and 3, and cutting or bending of wood or the like is possible due to the proximity in conjunction with the pinching operation of the fork grapple G. It becomes possible. Besides, since it functions as a so-called rib, it contributes to the improvement of the rigidity of each base 2 and 3.

  Further, when attaching the base portions 2 and 3 to the fork grapple G, the blade 21 enters between the claws Gf above the connecting rod Gr, and the lower end edge of the connecting rod Gr is hooked from above. To engage. The engagement of the plate blade 21 prevents the base portions 2 and 3 from falling from the claws Gf.

  In the present embodiment, one plate blade 21 is disposed between the claws of the two-nail base portion 2, and two plate blades 21 are disposed between the claws of the three-nail base portion 3. It is set up. However, the arrangement of the plate blade 21 is not limited to the present embodiment. For example, one plate blade 21 may be disposed in each of the base portions 2 and 3. However, in the case of this mode, it is necessary to arrange the blade 21 by adjusting the position avoiding the interference with each claw Gf so that the blade edge of the blade 21 approaches or is joined by the pinching operation.

  Further, in each of the base portions 2 and 3, the auxiliary plate 22 is disposed above the plate blade 21. The auxiliary plate 22 has a substantially semi-cylindrical shape with the upper half removed, and when the fork grapple G and the base portions 2 and 3 are attached by bringing the fork grapple G and the base portions 2 and 3 into close proximity from the lower side. Act as an alignment aid for Here, the auxiliary plate 22 of the two-nail base portion 2 is disposed at one position located between the two claw portions Gf, and the auxiliary plate 22 of the three-nail base portion 3 is three claw portions It is arranged in two places located between Gf.

  Then, in each of the base portions 2 and 3, two U-bolts 23 are circumferentially arranged with respect to the connection rod Gr of the claw portion Gf of the fork grapple G, and the nut 24 is fastened on the outside of the bottom plate of each base portion 2 and 3. And firmly fixed to the fork grapple G.

  A bucket portion 4 is integrally formed on the tip end side of the fork grapple G of each of the base portions 2 and 3 at a position extending further downward than that position. Each bucket portion 4 is formed in a U-shaped cross section with the same width dimension as each of the base portions 2 and 3 with the claw portion opposite side opened. The both side walls of the bucket portion 4 are set higher than the base portion side, and the bottom plate is formed to be slightly inclined so that the both side walls become lower toward the tip side. As a result, the bucket portion 4 forms a predetermined space provided with a bottom surface opened on the claw opposite side and both side wall surfaces.

In addition, a plurality of corner portions 41 are formed at the upper end edge portions on opposite sides of the both side walls. The corner portion 41 functions as a so-called saw blade, and is formed so that the peaks and valleys are mutually offset when the bucket portions 4 approach each other to the opposing position.

  Further, since the bucket portion 4 is integrally formed by extending from each of the base portions 2 and 3, the width dimension of both side walls of the bucket portion 4 on the two-nail base portion side is the bucket on the three-nail base portion side. It is set shorter than the width dimension of both side walls of the part 4. For this reason, with the closing operation of the fork grapple G, a part on the opposite side of the bucket portion 4 on the two claw base portion side enters the inside of the bucket portion 4 on the three claw base portion side. That is, both bucket parts 4 can be closed with a predetermined overlap, and the two bucket parts 4 can form an internal space of a predetermined capacity. And it is possible to store a deposit in this internal space.

  A rectangular plate-like engagement piece 5 extending downward is disposed on the inner surface of the tip edge of the bottom plate of the bucket portion 4. The engagement piece 5 is fixed to the bottom plate of the bucket portion 4 by fastening four bolts 52 and nuts 53, so that the engagement piece 5 is disposed in a detachable manner.

  The engagement piece 5 is a plate material having a width dimension that can be inserted into the notch Uh of the lid Uc of the side groove U of a predetermined size, and the tip end side projecting from the bucket portion 4 is predetermined when the fork grapple G opens at a predetermined angle. It bends and forms from the tip edge neighborhood of bucket part 4 so that the perpendicular surface which carries out parallel confrontation by interval may be constituted. The above-described vertical surface serves as a gripping surface 51 when gripping the lid Uc, and the lid Uc of the side groove U can be held by opening and closing by the vertical movement and pinching operation of the fork grapple G.

  Further, in order to prevent the engagement piece 5 from falling when gripping the lid, a round bar is connected in the width direction at the lower end portion of the gripping surface 51 to form the detachment prevention 51 a. Furthermore, the engagement piece 5 needs to have a certain degree of flexibility in order to improve the reliability at the time of gripping, and the plate thickness of the engagement piece 5 is greater than the plate thicknesses of the respective base portions 2 and 3 and the bucket portion 4 Also set thin.

  In order to further improve the reliability in gripping the lid Uc, the pad 54 made of resin may be disposed on the gripping surface 51, and in order to improve the copyability of the gripping surface 51, the attachment portion with the bucket portion 4 Alternatively, a resin plate 55 (for example, a urethane material or a rubber material) may be interposed.

  In addition, although the engagement piece 5 of the present embodiment is detachable by the bolt 52 and the nut 53, for example, a mechanism for rotating the engagement piece 5 upward to retract the tip side into the bucket portion is added Then, the engagement piece 5 may not be removed from the bucket portion 4.

[Effect]
Next, the operation of the adapter 1 according to the present embodiment will be described together with the operation for the side groove U. In addition, it is necessary to fix the engagement piece 5 to each base part 2 and 3 beforehand.

  First, the adapter 1 of the above configuration is fixed after mounting the base parts 2 and 3 to the claw parts Gf of the fork grapple G of the hydraulic shovel E, in other words, mounted and used.

  As a mounting procedure, as shown in FIG. 4, the three-nail base portion 3 is inserted obliquely from the outside on the back side to the inside of the both-side claws with respect to the three-side claw portion Gf of the fork grapple G. Get close to it. Then, while aligning the upper auxiliary plate 22 along the rotation axis Ga of the fork grapple G, while engaging the lower ends of the two plate blades 21 with the upper side of the connecting rod Gr, the notch 31 is positioned at the connecting rod Gr. Fit together. After mounting, the connecting rod Gr and the bottom plate are fixed with two U-bolts 23 and nuts 24.

  Similarly, the two-nail base portion 2 is also brought close to the two-side claws Gf from the diagonally downward direction so as to cover the entire two claws from the back outer side. Then, the auxiliary plate 22 on the upper side is made to be along the rotation axis Ga of the fork grapple G, and the lower end edge of the plate blade 21 is temporarily engaged with the upper side of the connecting rod Gr and attached. After mounting, the connecting rod Gr and the bottom plate are fixed with two U-bolts 23 and nuts 24.

  After mounting is complete, the gripping surface 51 of the engagement piece 5 is made to form a vertical surface by opening and closing by the arm operation of the hydraulic shovel E and the pinching operation of the fork grapple G, and inserted into the notch Uh of the lid Uc of the side groove U . After the insertion, the fork grapple G is closed to hold the lid Uc, and the hydraulic shovel E can be lifted upward to remove the lid Uc from the side groove U. At this time, if the stopper 51a of the engagement piece 5 is hooked on the lower end edge of the notch Uh of the lid Uc, it functions as a fall prevention.

  In addition, as shown in FIG. 6, the engaging piece 5 in this embodiment is set to a dedicated bending angle α which is adapted to the length D1 of the lid Uc. For this reason, when working on the side groove U of another size, it is necessary to previously arrange in the bucket portion 4 a dedicated engagement piece 6 set to a bending angle .beta. Adapted to the length D2 of the lid Uc. There is. In addition, if each engagement piece 5 and 6 prepares several variations which changed the width dimension and plate thickness, not only the lid Uc made of concrete of a present Example but the metallic mesh provided with the several through-opening It is also possible to cope with grating which is a plate material.

  After removal of the lid Uc, as shown in FIG. 7, the engagement piece 5 is removed from the bucket portion 4 and the adapter 1 is made to enter the inside of the side groove and appropriately opened and closed. Can be stored outside and removed.

  When the work of removing deposits in the side groove U, if the branch Wb of the tree W extends to the upper part and becomes an obstacle, pruning work using the corner 41 of the bucket part 4 is also performed as a preliminary work. Can. Further, even if there is an fallen tree or the like on the side groove, it is possible to cut the fallen tree by cutting it short with the blade 21.

  After completion of the work of removing deposits inside the side groove, the engagement piece 5 is attached to the bucket portion 4 again, the lid Uc is appropriately gripped and installed in the original place, and the work for the side groove U is finished.

DESCRIPTION OF SYMBOLS 1 adapter 2 2 claw base part 21 plate blade 22 auxiliary plate 23 U bolt 24 nut 3 3 claw base part 31 notch 4 bucket part 41 corner part 5 engagement piece 51 grip surface 51a release stop 52 bolt 53 nut 54 pad 55 Resin plate 6 engagement piece G fork grapple Ga rotating shaft Gf claw part Gr connection rod E hydraulic shovel U side groove Uc lid Uh notch part W wood Wb branch

Claims (5)

In a fork grapple that is disposed opposite to an end of an arm of a hydraulic shovel and performs a gripping operation by a pinching operation,
A base portion attached to the back of the claw portion of the opposing fork grapple;
A bucket portion which is formed in a state of being extended from the tip of the fork grapple at the time of attachment of the base portion and has a bottom surface and both side wall surfaces and is opened on the opposite side;
An engagement piece which is formed to extend from the tip end edge of the bucket portion and which can be inserted into a through hole formed in the lid for the side groove or notches in the longitudinal end portions;
Adapter equipped with a fork grapple characterized in that it comprises. In the attachment of the engagement piece,
The tip end edge of the bucket portion is set at a predetermined angle so that it can be inserted into the through hole or the notched portion at both longitudinal end portions while maintaining the distance between the opposing engagement pieces by the opening of the fork grapple. The fork grapple mounted adapter according to claim 1, characterized in that it is mounted in a bent shape. In the closed state of the fork grapple pinching operation,
The adapter for mounting a fork grapple according to claim 1 or 2, wherein both side walls of one bucket portion are formed so as to be in close proximity and intruded into the inner surfaces of both side walls of the opposing bucket portion.   The fork grapple mounting adapter according to claim 1, 2 or 3, wherein a plurality of corner portions are respectively formed on the edge portions of both side walls of the opposing bucket portion. In the above-mentioned base portion,
5. The fork grapple according to claim 1, wherein a blade for nipping and cutting is disposed so as to extend from the claws to the opposite side when the fork grapple is attached. Adapter.

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