JP3435302B2 - Excavation structure of excavator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residual trunk processing machine for digging up a residual trunk such as tobacco from a ridge for post-treatment, or a digging work machine for digging a crop cultivated in a field or a mountainous area. Regarding the starting structure.

[0002]

2. Description of the Related Art Conventionally, a residual trunk such as a cigarette left on a ridge is removed from the ridge by a pair of screw type dug portions which are rotated in a vertical axis as disclosed in Japanese Patent Laid-Open No. 153901/1988. It is known that it is dug up to remove the soil at the root, and is processed at the rear stem processing unit at the rear.

[0003]

In the dug portion having the above-mentioned conventional structure, since the ridges are dug down from both sides by the screw which rotates inward with respect to each other and the dug up with the remaining trunk sandwiched, the remaining trunk is sufficiently soiled. Since it is supplied to the residual stem processing unit without being carried out, the soil clogging at the root part reduces the clogging at the induction part and the cutting process at the cutter part, and the cut pieces of the residual trunk become bulky. At the same time, the screws that rotate inward with respect to each other on the vertical axis have a particularly poor soil sweeping property in viscous soils, etc., and the soil is stubbornly stubbornly adherent to the soil, which reduces excavation performance and causes excessive power load. There's a problem.

[0004]

In order to solve the above-mentioned conventional problems, the excavation part structure of the excavation work machine or the like of the present invention has an excavation part mounted on a traveling machine body which is slightly wider than a ridge. A digging device having laterally provided digging blades on the left and right support frames extending to have the digging width, and a rotary shaft rotatably rotatably above the digging device. A plurality of excavation claws are configured by an earth dropping device projecting in the excavation width formed by the support frames on both sides, and claws for soil removal are provided on both sides of the rotary shaft near the outside of the support frame. Are provided.

Further, it is characterized in that a rotary rod is attached to the rotary shaft in a substantially parallel manner within a rotation locus of the claw.

[0006]

[0007]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to the drawings. First, A shown in FIGS. 1 to 5 is a residual trunk processing machine (digging work machine) that digs up and cuts the residual trunk of tobacco etc., and this traveling machine body 1 is for combine harvesters and a mowing section and a threshing section. The steering lever 1L and the like are erected in front of the right side of the machine body frame (machine base) 1b which is supported by the left and right crawler type traveling devices 1a and is framed in a plan view rectangular shape in a state where it is also used in a state of being removed. The control section 1c including the control section panel 10 and the seat 11 is formed, and the engine 1 is provided below the seat 11 of the control section 1c.
E is installed and installed, and a transmission mechanism 1D is provided on the left side of the E to convert and transmit the power of the engine to the traveling device 1a and each working unit, and stands up various operation lever groups for performing the operation.

A pretreatment unit 2 is provided on the right front portion of the traveling machine body 1.
Is mounted so as to be adjustable up and down by a support shaft 13 for an upper fulcrum provided on the body side and a lower lifting cylinder 15.
A residual trunk processing unit 3 including a guiding unit 3a and a cutter unit 3b is installed behind the control unit 1c on the right side of the residual trunk processing unit 3.
A hopper (accommodation section) 4 for accommodating a residual trunk (hereinafter referred to as a cut piece) cut by the residual trunk processing unit 3 is arranged behind the.

The preprocessing unit 2 and the remaining trunk processing unit 3 are
The housing 4 is placed on the left side of the machine body frame 1b in the front-rear direction and is detachably attached and fixed by an appropriate mounting tool 9, and the housing portion 4 is formed on the right side rear part of the machine body frame 1b. Similarly, it is supported and configured by a rotation support mechanism 7 which will be described later on the machine base 4F which is attached and fixed. 1
G is a tail wheel equipped at the rear end of the machine base 4F, and supports the weight of the hopper 4 at the time of accommodating the cut pieces behind the traveling device 1a on the right side, thereby supporting the weight of the machine body unevenly. I prevent it and run it well. Further, as shown by the dotted line in FIG. 3, this tail wheel 1G can be switched to a reverse posture when not in use by a lateral support shaft 48 protruding from the machine base 4F and is attached to the lateral support shaft 48. Vertical support shaft 49
It is supported via the so that the ground contact height during use can be adjusted.

Next, the detailed structure of the preprocessing unit 2 will be described. The pretreatment unit 2 pivotally supports the pretreatment unit frame 2F by an upper rotation support shaft 13 provided at the center of the front end of the machine base 3F, and supports lower left and right sides by an elevating cylinder 15.
The steering lever 1L is mounted so that it can be adjusted up and down by operating it back and forth. Further, support rods 21 having front wheels (guide wheels) 20 rollingly contacting the ground during work are pivotally supported toward the front on the left and right sides of the pretreatment section frame 2F. The front wheel 20 is removably attached to the support rod 21 so that the front wheel 20 can be moved and adjusted in the front-rear direction and the vertical ground height can be adjusted via the front wheel vertical support shaft 20a.

A feeder 5 is installed from the rear of the center of the width of the left and right front wheels 20 and 20 toward the upper front of the guide portion 3a. The feeder 5 is stretched by being covered with a cover frame 5a. The left and right feed chains 5b, 5b form a conveyance path for nipping and conveying the stem portion of the remaining trunk, and the front side of the feeder 5 is connected and supported by a connecting rod 21a at a midway portion of the support rod 21. The rear side is projected from the transmission mechanism 1D, is supported by the rotating shaft 21b, and is erected in a forward tilted manner by being supported for transmission by a transmission shaft 21c that is erected upright so as to be swingable in the front-rear direction. As a result, when the pretreatment unit 2 is moved up and down around the support shaft 13 by the lift cylinder 15, the feeder 5 also rotates via the connecting rod 21a.
It is designed so that it can move up and down around.

On the other hand, below the middle of the feeding path of the feeder 5, an impeller-shaped earth falling wheel 50 for contacting with the root portion of the remaining trunk to be nipped and carrying out soil removal is rotationally driven in the arrow direction. I have to. Further, below the front part of the feeder 5, a digging device 6a for digging up the residual trunk, and a soil spill for removing the soil adhering to the root of the residual trunk along with excavating the excavated soil above it. The excavation part 6 including the device (ridge breaking device) 6b is formed integrally with the pretreatment part frame 2F. That is, as shown in FIG. 6, the excavation device 6a is
A support frame 6 extending from both sides of the pretreatment section frame 2F toward the front so as to have a digging width slightly wider than the ridge width.
Between the F and 6F, a digging blade 60 having a V-shape in a plan view is integrally laterally fixed in a forwardly inclined shape, and a plurality of rooting rods 61 are roughly spaced at the central portion of the digging blade 60. It is configured by projecting rearward and upward.

Further, the soil dropping device 6b has a cylindrical rotary shaft 62 whose both shaft ends are laterally rotatably supported by the pretreatment frame 2F so as to be rotatable in the upward direction of the arrow. A plurality of claws (digging claws) 63 for removing soil from
Within the dug-up width formed by both the support frames 6F, they are fitted and inserted into the rectangular tube-shaped mounting portions 64 that are provided so as to project in different phases along the outer peripheral length, and have the same pawl mounting structure as a conventional rotary device. It is arranged in a protruding manner. And the rotary shaft 6
2 dig up both sides and extend it so that it is wider than the width.
In this portion, a soil sweeping 65 having substantially the same shape as the claw 63 is provided so as to project near the outside of the support frame 6F on both sides of the claw 63 group, and these claws 65, 63 are provided on one side. The blade body portion bent toward is arranged so as to be directed outward from the central portion of the rotary shaft 62.
As a result, the ridges U are digged up by the claws 63 and 65, and the ridges U are collapsed to the side and scraped evenly, and the soil and weeds that adhere to the support frame 6F that is installed inside the rotation loci of the claws 63 and 65 are attached. It is designed so that it can be scraped off accurately, and it excels at digging up the remaining trunk with low digging resistance.

Reference numeral 66 denotes a rotary rod which is rotated near the upper portions of the support frames 6F, 6F, and the rotary rod 66 is a rotary shaft 6.
On both sides of 2, the supporting frame 6F and the scraping claw 65 are formed by rod-shaped rods longer than the width thereof, and the mounting pieces 67 formed in the same shape as the mounting base of the claw 63 are fixed to both ends thereof. Mounting parts 64, 64 with different phases from the scraping claw 65
, And is fixed by mounting screws 68. Further, the rotary rod 66a having an appropriate number of mounting pieces 67 is also provided on the outer circumference of the rotary shaft 62 between the rotary rods 66, 66 by projecting the rotary rod 66a in a different phase with the same mounting configuration, thereby leaving the excavated residue. The roots of the trunks are hit against each other so that the remaining trunks can be appropriately soil-removed and root-removed, and the rearward soil-cleaning action can be performed.
The rotary rods 66, 66a have a simple mounting means for the rotary shaft 62, like the pawls 63, scraping pawls 65, etc., so that they can be easily attached and detached.

Further, as shown in FIG. 7 (A), the earth falling device 6
Behind the right side of b, a synthetic resin material or a cloth material is formed at the rear end of the cover frame 51 projecting from the feeder 5 toward the front side of the control panel 10 so as to cover above the soil drop device 6b. A cover 69 for preventing soil scattering having flexibility is attached so as to hang down close to the rotation trajectory of the scraping claw 65. This cover 69 prevents the scattered soil from adhering to the control part 1c and the back side of the machine base. In addition to preventing the above, the front surface of the control portion 1c can be favorably covered while freely bending without causing any hindrance when the pretreatment portion 2 moves up and down.

Further, as shown in FIG. 3B, a tilting device 55 for the remaining trunk, which is laid horizontally in a direction intersecting the transport path, is laterally supported above the end of the feeder 5. In this tilting device 55, a resin roller 55a having elasticity is attached to a support column 56 standing upright from the left and right cover frames 5a with respect to an adjusting screw 5a.
It is constituted by rotatably supporting an end of an adjusting rod 57, which is attached via a long hole 57a at 6a so that its position can be adjusted. As a result, the height of the roller 55a can be freely adjusted up and down and front and back as shown by the dotted line, and the residual trunk sandwiched and conveyed by the feeder 5 is adjusted to the tilted posture of the root preceding conveyance suitable for the culm length. The operation is performed so that the continuous feeding from the feeder 5 to the guiding portion 3a can be favorably performed.

Next, the structure of the remaining trunk processing unit 3 will be described. As shown in FIG. 8, the residual trunk processing unit 3 integrally connects a guiding unit 3a and a cutter unit 3b, and the guiding unit 3a stretches the residual trunk transport belt 3V in the front-rear direction, and both sides thereof are stretched. Is surrounded by a guide plate 30 that expands upward, and the end of the conveying belt 3V in the conveying direction is provided in the entrance of the cutter portion 3b. On the other hand, as shown in FIG. 4, the cutter portion 3b rotatably supports the cutter blades 31a in the cutter drum 31, and a discharge pipe 32 for cutting pieces is erected on one side of the cutter drum 31 and its discharge port is provided. It is directed toward the inside of the opening 4a of the hopper 4.

In addition, the residual trunk processing section 3 having the above-mentioned structure is provided in the transmission case 3c which is provided laterally behind the refracting transmission shaft 16 extending rearward from the transmission mechanism 1D through the lower portion of the hopper 4 and the cutter section 3b. The refracting transmission shaft 16 and the cutter shaft 31b are linked with each other via the belt transmission mechanism 16a, so that the cutter blade 31a and the conveyor belt 3V can be transmitted together from the control section 1c. In addition, an operation rod 33 for ground work is installed upright at the terminal end portion of the guiding portion 3a, and when the tilting operation is performed to the front side, only the conveyor belt 3V is independently reversely conveyed and rotated. When the portion 3b is clogged, the above operation makes it possible to evacuate the residual supply trunk to facilitate maintenance work such as removal of the clogging. In this illustrated example, the operating rod 33 is connected to the operating lever 33L standing on the control portion 1c via the connecting rod 3R, so that the operating portion 1c is connected.
The same operation can be easily performed from the side.

As shown in FIGS. 2 and 9, the discharge tube 32 has a downwardly U-shaped dielectric member 35 having a U-shaped cross section at the tip of the discharge port via a mounting pin 35a.
It is rotatably attached so as to face the upper part in a, and an urging switching mechanism 36 is provided between the two. In this urging switching mechanism 36, the central portion of the operating rod 38 is attached to the guide 35 by the mounting shaft 38.
It is mounted rotatably by a, and the upper end of the operating rod 38 is pulled and urged by a tension spring 34 fixed to a supporting rod 32a protruding from the discharge cylinder 32, and the operating rod 3 is
Hook 3 of connecting member 39 such as a wire attached to the lower end of 8
9a is configured to be detachably connected to a stopper 4T that projects from below the rear wall 4c of the hopper 4.
Since the hook 39a can be removed from the stopper 4T by one-touch operation, maintenance work such as cleaning of the discharge tube 32 can be easily performed.
The discharge tube 32 may be a flexible bellows-shaped guide, and in this case, the connecting member 39 may be a rod-shaped member.

As a result, as shown in FIG. 9, in the working posture in which the cutting pieces of the residual trunk are put in, the guide 35 is pulled and supported by the connecting member 39 against the spring 34 and is supported on the opening 4a of the hopper 4. It can be installed in a proper storage work posture, and the cut pieces vigorously thrown by the cutter blades 31a of the cutter portion 3b can be properly stored in the hopper 4. Further, when the cut pieces housed in the hopper 4 are discharged from the opening 4a toward the ground on the side of the machine or a transport vehicle (not shown) or the like, the hopper 4 uses a rotary support mechanism 7 to be described later to rotate the machine. When it is rotated rightward in the side direction, the connecting member 39 is loosened by the upward movement and the operating rod 38 is pulled by the spring 34.
Is switched from the solid line to the upward retreat posture shown by the dotted line and retreats from above the opening 4a.
The discharge work can be smoothly rotated to the discharge posture shown by the dotted line without contacting with 5, and the discharge work can be performed efficiently and accurately. An opening 32c for maintenance, which can be opened and closed by a lid 32b, is provided in the middle of the discharge tube 32.

Next, the structure of the hopper and the structure for supporting its rotation will be described with reference to FIGS. The hopper 4 includes a front wall 4b, a rear wall 4c, a left wall 4d, and a right wall 4e.
In addition, the bottom wall 4g forms a rectangular box-shaped container having an opening 4a on the upper side, and a rubber 45 is attached to the front wall 4b to buffer the abutment of the cut pieces at the time of insertion and storage. An anti-scattering wall 46 for preventing the cutting pieces from scattering toward the control section 1c side is provided at the upper end portion by a stay 47 and a hinge 47a so that the angle can be adjusted, and the cutting pieces are adjusted and supported at an appropriate inward angle when the cutting pieces are accommodated. We are trying to prevent the soaring of the trees and provide good accommodation. Further, a support shaft 40 and an operating shaft 41 below the inner side of the support shaft 40 project in the same direction on the upper outer side of the rear wall 4c.

Further, in the rotation support mechanism 7, a pillar 71 having a metal portion 70 on which the support shaft 40 is rotatably supported is formed at an upper end portion thereof is erected on the front and rear outer sides of the machine base 4F. An actuator 73 having a cylinder (actuating rod) 72 on which the actuating shaft 41 of the rear wall 4c is supported inside the support column 71 so as to be swingably supported on the machine base 4F via a mounting shaft 75. It is composed by. Although the actuator 73 in the illustrated example is a hydraulic cylinder, an electric cylinder or the like may be used, and the actuator 73 is expanded and contracted by an operation lever (not shown) for rotating a hopper installed in the control section 1c. .

Therefore, as shown in FIG. 9, in the hopper 4, the support shaft 40 and the operating shaft 41 are attached to and supported by the support column 71 and the actuator 73 of the rotation support mechanism 7, respectively, and the actuator 73 is at the most reduced position. When the stop operation is performed, the work posture is fixedly supported by the solid line, and when the actuator 73 is operated to the most extended position, the actuator 73 pivots upward toward the outside of the machine in the direction of the arrow about the support shaft 40 as a fulcrum, and the dotted line The cut piece can be discharged by switching to the discharge posture shown by.

Further, the hopper 4 constructed as above is
The outer wall (right wall) 4e is inclined inward so that the lower end is located inside the machine body.
Since the outer wall 4e forms a steeply inclined flow angle when is switched to the discharge position, the cut piece on the bottom side of the hopper 4 can be discharged surely and quickly, and at the same time, the cut piece of the hopper 4 can be discharged. The amount of rotation can be reduced and the extension amount of the actuator 73 can be reduced. Therefore, there is an advantage that the hopper 4 can be favorably rotated and supported while the actuator 73 is made inexpensive and does not become large. Further, the bottom wall 4g is inclined so that the left side becomes higher, so that the bottom wall 4g is prevented from coming into contact with the residual trunk processing unit 3 at the time of rotation and the cut pieces can be discharged well. .

Next, the operation of the residual processor A having the above structure will be described. By operating the pretreatment unit 2 and contracting the elevating cylinder 15, the pretreatment unit 2 is lowered to move the digging blade 60 of the digging unit 6 to the ridge U as shown in FIGS. 2 and 6B. Make it approximately the same height as the bottom. Then, the traveling body 1 is sandwiched by the left and right front wheels 20 sandwiching the ridge U for the residual trunk processing.
Is advanced along the ridge U. With this forward movement, the ridge U
The bottom portion of the claw is excavated by the excavating blade 60 in the transverse direction, and the excavated portion is claws 63, 65 of the earth removing device 6b.
It will be destroyed by the upward rotation of the group.

When the forward movement is further continued, the upper part of the residual trunk on the ridge U is gripped between the left and right feed chains 5b of the feeder 5, and in this state, the lower part of the residual trunk is dug by the above-mentioned structure. . That is, the remaining trunk is gripped and the ridge U
Everything will be dug up from the root. When the residual trunk is nipped and conveyed upward and rearward as the machine body further advances, the root portion is excavated by the soil erosion device 6b and unraveled to remove the soil. Next, the root of this residual trunk, with some soil attached to it while it is being conveyed by the feeder 5, is forcibly struck by the earth falling wheel 50 installed below the middle of the feeder 5 conveyance path. After the soil was removed, the guiding part 3a
Be transported to.

As the soil-removed trunk is conveyed to the rear of the feeder 5, the upper part of the stalk comes into contact with the roller 55a of the tilting device 55 so that the root part is in front of the roller 55a. When the sheet is placed on the conveyor belt 3V, the sandwiched conveyor is released and smoothly conveyed, and the conveyor belt 3V guides the cutter portion 3b toward the entrance. Next, the residual stem supplied to the cutter portion 3b is successively finely shredded by the rotation of the cutter blade 31a from the root portion toward the stem portion, and the shredded cut pieces are flipped up and discharged from the discharge tube 32. It is guided by the guide 35 from the outlet and is accurately discharged and housed in the hopper 4. Then, when the cutting pieces are full in the hopper 4, the machine body is stopped and the hopper 4 is rotated as described above via the rotation support mechanism 7 to discharge the cutting pieces, and then the hopper 4 is returned to its original state. It is possible to return to the state and perform the remaining stem processing work again continuously and efficiently.

In the above work, according to the present invention, when the remaining trunk is dug up by the dug portion 6 shown in FIG.
While the excavating blade 60 of a is supported by the left and right support frames 6F extending to have the excavated width, the lower portion of the ridge U is excavated while transversely cutting and the central portion of the excavating blade 60 is cut. The plurality of rooting rods 61 provided lift up and guide the portion dug up along with the progress of the airframe, and lift up the root of the residual trunk to be planted in the ridge U and guide it toward the soil drop device 6b. .

At this time, the stem portion of the remaining stem is sandwiched by the feeder 5, and the root portion has a claw 63 projecting from the rotary shaft 62 rotating upward and the rotary rod 66a on the inner side to remove soil and loosen roots. Since it will be sufficiently received and the residual trunk will be in a state with a small amount of adhered soil at the root part and it will be accurately sent to the residual trunk processing part 3 at the upper rear, so that excessive cutting resistance etc. should be given to the cutter part 3b as well. Without this, cutting processing and the like can be performed well.

In such a dug-up operation, the rotary shaft 62 is provided with earth-removing claws 65 on both sides of the claw 63 group projecting within the width of the support frame 6F so as to be close to the outside of the support frame 6F. Therefore, the claw 65 does not accumulate the scattered soil splashed on both sides by the claw 63 on the side, and performs a good soil sweeping action backward and side while rotating the scraper while supporting both support frames. Even the ground and the lump of soil on the outside of 6F can be scraped and leveled to a low level. Further, the support frame 6F can surely scrape off and remove the soil adhering to both sides of the support frame 6F by the inner claw 63 and the outer scraping claw 65, and the soil accumulated and adhered on the upper part of the support frame 6F can be rotated by the outer rotary rod 66. It is precisely removed by. Therefore, the dug portion 6 is the support frame 6
The excavation work of the remaining trunk can be satisfactorily performed without obstructing the excavation work due to the soil adhesion of F or causing excessive running resistance.

The weeds and straw debris which are to be wound around the rotary shaft 62 in the above-mentioned work are provided on the middle side rotation rod 66a and the outer rotation rod, which are provided in different phases with respect to the claw 63 and the claw 65. Since it can be repelled by 66 to prevent wrapping, the digging work with less resistance can be favorably carried out without lowering the digging up of the claw 63 and the scraping claw 65 and the soil removal performance due to the wrapping. Further, the rotary rod 66a on the inner side has a feature that it comes into contact with the root portion of the dug up residual trunk to suitably perform soil removal, root loosening, and rearward soil sweeping action. Further, the scattered soil scattered to the rear side of the control section 1c by the soil drop device 6b has a flexible cover 69 attached to the pretreatment section 2.
As a result, the rearward scattering is accurately prevented, and therefore, even when the pretreatment unit 2 is moved up and down, the control unit 1c and the like can be favorably prevented from being soiled.

[0032]

The present invention has the following effects by being configured as described above. According to the first aspect of the present invention, on both sides of the group of claws for excavation provided on the rotary shaft in the width of the support frame, the claws for excavating soil are provided so as to be close to the outside of the support frame. The ridges are accurately excavated by the claws and the scattered soil that is splashed to the side by the claws is scraped by the claws for soil removal without being accumulated on the side of the support frame, and is good for backward and sideward rotation. The soil can be cleared and the ridges can be lowered. Further, since the soil to be attached to the support frame is reliably scraped off from both sides by the inner excavating claw and the outer soil sweeping claw, the excavated portion is attached by the supporting frame soil. It is possible to satisfactorily excavate the remaining trunk etc. without hindering the excavation work or causing excessive running resistance.

According to the second aspect of the present invention, the rotary rod provided in the rotary locus of the claw repels the weeds or the like which are to be wound around the rotary shaft during the excavation work to prevent the winding and to sweep the soil backward. Since it can be promoted, the excavation work of the soil removal apparatus and the excavation work with less resistance can be favorably performed without lowering the soil removal performance.

[0034]

[Brief description of drawings]

FIG. 1 is a perspective view showing a tobacco residual trunk processing machine.

FIG. 2 is a left side view of FIG.

FIG. 3 is a right side view of FIG.

FIG. 4 is a plan view showing a cross section of a main part of FIG.

5 is a front view of FIG.

FIG. 6A is a perspective view of a dug portion. (B) is a front view showing the operation of (A).

FIG. 7A is a perspective view showing a manner of attaching the cover.
(B) is a side view of the tilting device.

FIG. 8 is a side view of the residual trunk processing unit.

FIG. 9 is a rear view showing the operation of the remaining trunk processing unit and the hopper.

[Explanation of symbols]

1 traveling aircraft 1a Airframe frame 2 Pretreatment section 3 Residual trunk processing department 3a guidance section 3b cutter 4 hoppers (container) 5 feeders 6 excavation part 6a excavator 6b Soil drop device 6F support frame 60 excavating blade 62 rotary shaft 63 claws (digging claws) 65 nails (dirt removal nails) 66,66a rotary rod 69 cover A Remaining processor

Front page continued (72) Inventor Masanori Ishikawa, 667 Izaiya-cho, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture 1 Mitsubishi Agricultural Machinery Co., Ltd. Area 1 Within Mitsubishi Agricultural Machinery Co., Ltd. (56) References JP-A-8-275607 (JP, A) Actual development Sho 55-55003 (JP, U) Actual development Sho 64-56601 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) A01B 35/00 A01B 33/10

Claims (2)

(57) [Claims] 1. A dug portion (6) mounted on a traveling body (1 )
Is extended so that the digging width is slightly wider than the ridge width.
The left and right support frames (6F), (6F) , the excavation device (6a) horizontally provided with the excavation blade (60) , and the rotary shaft axially rotatably supported above the excavation device (6a). Multiple digging claws (63) on shaft (62 )
The supporting frame (6F) on both sides of the above is composed of an earth dropping device (6b) projecting in the dug up width formed by (6F) , and a soil sweeping claw ( 6 ) on both sides of the rotary shaft (62). 65) support frame (6F),
A digging portion structure for a digging work machine or the like, which is provided near the outside of (6F) . 2. A digging structure for a digging work machine or the like according to claim 1, wherein a rotary rod is attached to the rotary shaft in a substantially parallel manner within a rotation locus of the claw.