JP2019103479A - Walking-type work machine - Google Patents

Abstract

To make it possible to properly perform a variety of intertillage work and ridging work using a single type of plate-like members.SOLUTION: A walking-type work machine according to the present invention comprises: a machine body having a control lever coupled thereto; a tiller 2 supported in the rear of the machine body; and plate-like members 40 provided in the rear of the tiller 2 and capable of raising, to ridges at the left and right, soil tilled by the tiller during traveling for tillage, while elastically deforming the soil; and left and right soil gathering members 6 which are arranged to correspond to left and right upper portions of the plate-like members 40 and protrude outwardly to the left and right from the left and right sides of the plate-like members 40 to aid the plate-like members 40 in raising the soil. The soil gathering members 6 are allowed to change their protruding state from the plate-like members 40.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a tilling device capable of performing a tilling operation while traveling between furrows, and a walking type work machine provided at the rear of the tilling device and provided with means capable of scraping the cultivated soil to the left and right.

In the case of walking type work machines, there are cases in which we perform medium cultivation work for the purpose of weeding, improvement of air permeability of soil, etc., and soil cultivation work mainly for preventing advent of adventitious roots and lodging of crops. The inside cultivation work and the cultivating work are carried out in such a manner as to scrape the soil cultivated by the cultivating apparatus to the left and right.
For example, the technology described in the following [1] is already known as this type of walking work machine.
[1] The rear hitch is provided with a soiling plate composed of a rubber plate or a synthetic resin plate in a state of being positioned on the rear side of the cultivating device (see Patent Document 1).

JP, 2013-236587, A (refer to paragraph "0037", "0042", and "Figure 4" to "Figure 7")

As described in the above [1], the structure having a structure to perform the soiling work using the soiling plate made of a rubber plate or a synthetic resin plate is useful in that the weight reduction of the soiling apparatus can be achieved. is there.
In the work using such soiling plate, especially when the medium cultivation operation is properly carried out, the soiling plate is quite bulky, and the width in the lateral direction is also wide in order to earth near the root of the crop. Need to configure.
However, there is room for improvement in that it is difficult to properly perform various intermediate cultivation operations and soil cultivation operations using a single type of soil soil plate because the height of the ridge and the position of the crop on the ridge are various. .

  The present invention is intended to use a single type of plate-like member so as to appropriately perform various medium cultivation operations and soil accumulation operations.

  In order to achieve the above object, the walking type working machine according to the present invention is a walking type working machine provided with a driving travel device and capable of traveling a tillage between gutters, with a control handle connected, by a worker The machine body to be steered, a cultivating apparatus supported at the rear of the machine body, and a rear of the cultivating apparatus are provided, and while the cultivating operation is traveling, the soil cultivated by the cultivating apparatus is elastically deformed. A plate-like member capable of being scraped, provided corresponding to the upper part of the left and right sides of the plate-like member, and projecting laterally from the left and right sides of the plate-like member by the plate-like member It is characterized in that left and right earthing members capable of assisting in scraping the soil are provided, and the earthing members can change the projecting state from the plate-like member.

According to the present invention, since it is possible to provide the right and left soiling members projecting leftward and rightward from the left and right side portions of the plate-like member and the projecting state of the soiling members can be changed, the size of the plate-like member itself It is possible to squeeze a wide area in the left and right direction without increasing the size.
Therefore, while using a relatively compact single type of plate-like member, it is easy to satisfactorily perform various medium cultivation operations and soil-filling operations by using it together with the earthing members.

  In the above-mentioned configuration, it is preferable that the jambing member is elastically deformable and supported by the plate-like member in a state of being superimposed on the plate-like member.

  According to this configuration, it is possible to use a plate-like member as the support means for the jamming members, and it is possible to omit a dedicated support structure for supporting the jammers. Moreover, it can handle with a plate-shaped member, and it can improve workability.

  In the above-mentioned configuration, it is preferable that the soiling member is supported by the plate-like member so as to be rotatable around an axial center intersecting the surface of the plate-like member.

  According to this configuration, it is possible to change the attachment posture of the earthing member to the plate-like member to an arbitrary angle, and it is easy to carry out the earthing operation according to the size and shape of the weir.

  In the above configuration, it is preferable that the soiling member is supported by the plate-like member so as to be slidable along the surface of the plate-like member.

  According to this configuration, it is possible to arbitrarily change the earthing range according to the crop or the like by appropriately changing the degree of protrusion of the earthing member from the outer end portion of the plate-like member and the like.

  In the above configuration, a long hole provided on one of the plate-like member and the earth-concentrating member in a support portion for supporting the earth-concentrating member on the plate-like member, and extending along the surface of the plate-like member; It projects along the axis which intersects the surface of the plate-like member from the other of the rod-like member and the earthing member, is inserted into the long hole, is slidably movable in the long hole, and rotates relative to the long hole. Preferably, a possible shaft member is provided.

  According to this configuration, the attachment posture of the earthing member to the plate-like member is changed to an arbitrary angle, or the degree of projection of the earthing member from the outer end of the annular member is appropriately changed. It is easy to carry out the earthing work properly depending on the sheath shape or the crop.

  In the above configuration, the reinforcing member has rigidity higher than that of the plate-like member, and is provided on the upper portion of the plate-like member in a state extending across the left and right of the plate-like member and facing the surface of the plate-like member. The plate-like member is supported by the machine body via the reinforcing member, and the soiling member is disposed between the plate-like member and the reinforcing member, and the plate-like member and the reinforcing member It is preferable that a fastener provided over the entire surface is provided, and by tightening the fastener, the soiling member is held between the plate-like member and the reinforcing member to maintain the state of the soiling member.

  According to this configuration, the earth-pounding member is disposed between the plate-shaped member and the reinforcing member, and is clamped from the front and back by the plate-shaped member and the reinforcing member by tightening the fastener. It is easy to maintain a posture capable of being resisted against the external force in the front-rear direction on which the external force acts.

  In the above configuration, the reinforcing member has rigidity higher than that of the plate-like member, and is provided on the upper portion of the plate-like member in a state extending across the left and right of the plate-like member and facing the surface of the plate-like member. The plate-like member is supported by the machine body via the reinforcing member, the earthing-placement member is disposed between the plate-like member and the reinforcing member, and the earth-raising member is the reinforcement member. It is preferable that the state can be changed to a storage state in which it is accommodated between the and the plate-like member.

  According to this configuration, the earth-preferring member is disposed between the plate-like member and the reinforcing member, and is accommodated between the reinforcing member and the plate-like member even in the stored state, whereby It is easy to make it hard to cause deformation or breakage.

  In the above-mentioned composition, it is preferred that the above-mentioned earthing member can be changed into a retreated state which does not project from the both ends of the above-mentioned plate-like member.

  According to this configuration, since it is possible to change the state of the jambing member to a retracted state in which it does not protrude from the left and right ends of the plate member, it is necessary to completely remove the jambing member from the plate member when it is not necessary to use it. However, if it is changed to a retreated state in which it does not protrude from the left and right end portions, it is possible to carry out the cultivating operation without any problem without removing the soiling member.

It is a left side view showing the whole walk type working machine. It is a front view which shows the whole walk type working machine. It is a left view which shows a soil-filling apparatus. It is a rear view which shows a soil accumulation apparatus. It is a disassembled perspective view which shows a soil-filling apparatus. It is a VI-VI line arrow line view in FIG. It is a VII-VII line arrow directional view in FIG. It is explanatory drawing which shows the operation state of a fixing mechanism. It is a rear view which shows the rope hook part for rope hanging. It is a rear view which shows the jambing member in another embodiment. It is a rear view which shows the jambing member in another embodiment. It is a left side which shows the soil-filling apparatus in another embodiment. It is a rear view which shows the soil-filling apparatus in another embodiment. It is a left view which shows the soil-filling apparatus in another embodiment. It is a rear view which shows the soil-filling apparatus in another embodiment.

  The front-rear direction and the left-right direction in the embodiments of the present invention are described as follows unless otherwise specified. As shown in FIG. 1 and FIG. 2, in the walking type work machine in which the steering handle is extended rearward, the advancing direction F of the advancing side F at the time of work traveling opposite to the extension direction of the steering handle And the traveling direction of the reverse side B is "after". The direction corresponding to the right side R is “right” and the direction corresponding to the left side L is “left” with reference to the forward posture in the front-rear direction.

[Overall Configuration of Walking Type Working Machine]
As shown in FIGS. 1 and 2, an engine 11 as a drive source is mounted on an engine frame 10 that constitutes a part of the machine frame 1 in the machine body of the walking type work machine. On the rear side of the engine frame 10, a transmission case 12 constituting the body frame 1 together with the engine frame 10 is integrally connected.
The engine 11 and the transmission case 12 are interlocked so as to be able to transmit power via a belt transmission mechanism 13.

  The transmission case 12 to which the power of the engine 11 is input is formed in a bifurcated shape including a front case 12A extended downward and forward and a rear case 12B extended downward and backward. At the lower part of the front case 12A, traveling wheels 14 as a drive traveling device are supported via an axle 14a, and a rotary cultivating device 2 (corresponding to a cultivating device) is supported at a rear case 12B via a drive shaft 20 There is.

A steering handle 16 is provided on the upper portion of the transmission case 12 which also serves as the airframe 1 through a handle mount 15.
The control handle 16 has a side end connected to the handle mount 15 pivotally connected by a horizontal axis having a horizontal axis x1. And the end by the side of grip part 16a is attached so that up-and-down position change is possible around the transverse axis x1.
The vertical position change of the steering handle 16 is performed by the angle adjustment mechanism 17 provided on the handle mount 15. The angle adjustment mechanism 17 includes an adjustment bracket 17 a erected upward from the handle mount 15 and a locking portion 17 b located near the base of the steering handle 16. By selectively engaging and disengaging a locking pin (not shown) on the locking portion 17b side with respect to a plurality of adjustment holes (not shown) formed in the adjustment bracket 17a, the horizontal axis center can be obtained. The mounting angle of the steering handle 16 around x1 can be changed.

  In the locking portion 17b, as shown in FIG. 9, a tubular shape welded and fixed to a pair of front and rear plate-like connection stays 16c connected across the left and right slimming portions 16b and 16b near the base of the steering handle 16 The part 17c is provided. The locking pin is supported so as to be able to slide out with respect to the cylindrical portion 17c, and the control pin is selectively engaged with the adjustment hole of the adjustment bracket 17a by causing the locking pin to project from the cylindrical portion 17c. The 16 mounting angles can be adjusted in multiple stages.

As shown in FIG. 9, a pair of left and right rope hooks 16d are fixed by welding over the left and right sides of the plate-like connection stay 16c connecting near the base of the steering handle 16 and the left and right slimming portions 16b, 16b. .
The rope hook 16d is formed in a C-shape in a rear view in which the center side in the left-right direction is open. Therefore, when the walking type working machine is transported by the transport vehicle, it is easy to carry out an operation such as hooking the rope on the rope hook 16d and fixing it on the loading platform.

The handle mount 15 is attached to the upper portion of the transmission case 12 so as to be rotatable about a vertical axis y1 in the vertical direction. Therefore, when the steering wheel mount 15 is rotated about the vertical axis y1 and turned 180 degrees from the rearward extension state shown in FIG. 1, for example, the grip portion 16a of the steering handle 16 moves forward. It will be in the forward extended state directed. As described above, by changing the posture to the forwardly extended state and fixing, it is also possible to grip and operate the steering handle 16 from the front side.
When changing the attitude of the steering handle 16 to the forward extension state and operating the angle adjustment mechanism 17 to change the attitude so that the steering handle 16 gets closer to the upper side of the engine 11, the overall state of the walking type work machine is low Can be This makes it possible to have a compact posture that is easy to handle during storage and transportation.

A main transmission lever 18 extends diagonally upward from the upper part of the transmission case 12. By operating the main transmission lever 18, shifting operation and forward / reverse operation of the traveling wheels 14 and forward / reverse operation of the rotary tilling device 2 are performed. A reverse operation can be performed.
The running wheels 14 are provided as a pair on the left and right, but the width W1 in the left-right direction is set to be narrower than the cultivating work width W2 by the cultivating claws 20a of the rotary cultivating device 2 as shown in FIG. It is configured to facilitate traveling.

[Rotary cultivator]
The rotary tilling device 2 will be described.
As shown in FIG. 1, the rotary cultivating device 2 is disposed at the rear position of the traveling wheel 14 in the longitudinal direction of the machine body, and is supported by the rear case 12 B of the transmission case 12 via a drive shaft 20.

The rotary cultivating device 2 is equipped with a cultivating claw shaft 21, a rotary cover 22, a traveling aid 3, and a rear cover 23.
The rotary cover 22 includes an upper cover portion and lateral side plates provided at both left and right ends of the upper cover portion. The upper cover portion is divided into three in the left and right direction, and the upper cover portions on both the left and right sides with respect to the upper cover portion located at the central portion, as shown by imaginary lines in FIG. , Z1 so as to be able to be fixed in position with the vertical position on the left and right ends changed. The lateral side plate portion is configured to be able to swing open and close around longitudinal axial centers z2 and z2 provided at both end portions in the left and right direction of the upper cover portion as shown in the figure.

The tilling claw shaft 21 is a drive shaft 20 supported by the rear case 12 B of the transmission case 12, in which a large number of nut-like tilling claws 20 a are planted on shaft portions projecting to both left and right sides of the transmission case 12. is there. The cultivating nail shaft 21 has a known structure that performs the cultivating action of the soil by the cultivating nail 20 a as the drive shaft 20 rotates.
The rotary cover 22 is provided to cover the upper half side of the tillage shaft 21 so as to limit the upward and sideward scattering of the mud which is bounced up as the tillage shaft 21 rotates.

The travel assisting tool 3 is located at the rear end side of the rotary cover 22 at the center in the left-right direction. The travel assisting tool 3 is attached to the rear frame 19 extended rearward from the rear case 12B of the transmission case 12 so as to be adjustable in the vertical position.
That is, the rear end portion of the rear frame 19 is provided with a cylindrical support cylindrical portion 19a, and in the state where the long round pipe-shaped support member 31 is inserted through the support cylindrical portion 19a, the vertical position adjustment is possible. There is. The position of the support member 31 in the support cylindrical portion 19a can be fixed or released by the fixing bolt 19b provided on the support cylindrical portion 19a. Thus, the vertical height position of the traveling support 3 with respect to the rear frame 19 can be adjusted.

The rear cover 23 is composed of a plurality of rubber flexible plates hanging downward from the lower end on the rear end side of the rotary cover 22 and has a role of restricting the scattering of the cultivation soil to the rear side. .
As shown in FIG. 1 and FIG. 2, the rear cover 23 is used in a use posture in a state of hanging down to the rear side and covering the rear side of the tillage axis 21 as shown by a thin two-dot chain line. In the non-use posture, the entire rear cover 23 is removed from the rear end of the rotary cover 22 or the lower end is folded upward as shown by a thick two-dot chain line in FIG.
In the case of carrying out the soil accumulation operation using the soil accumulation device 4 described later, the rear cover 23 is removed from the rear end portion of the rotary cover 22 or folded back at the lower end portion to set a nonuse posture.

[Pilling equipment]
The soil filling device 4 is attached to a traveling aid 3 supported at the rear end of the rear frame 19.
The travel assisting tool 3 includes an auxiliary wheel 30 which can be rolled and grounded, and a support member 31 formed of an elongated member extending in the vertical direction, and the upper end side of the support member 31 is supported by the rear frame 19 An auxiliary wheel 30 is provided on the lower end side of 31.
The soil reclamation apparatus 4 is connected to an intermediate portion in the extension direction of the support member 31 and is located on the rear side of the rotary cultivating apparatus 2 and can scrape the soil cultivated by the rotary cultivating apparatus 2 to the left and right Plate member 40 is provided.
The soil growing device 4 described here is a convenient name, and can be used not only in the soil growing operation but also in the middle cultivation operation.

The auxiliary wheel 30, as shown in FIGS. 3 to 6, is supported by a mounting bracket 32 provided at the lower end of the support member 31, and pivotally supported about a rotational axis x2 along the left-right direction. It is done.
The mounting bracket 32 has a horizontal piece 32a along the left-right direction welded and fixed to the lower end of the support member 31 at the top, and a vertical piece along the vertical direction extending downward from one lateral side of the horizontal piece 32a 32b is bent and formed in an L-shape which is inverted in the front-rear direction.
With the vertical piece 32b positioned on the left lateral side of the auxiliary wheel 30, around the rotation axis x2 which is the axial center of the support shaft 34 (corresponding to the axle of the auxiliary wheel 30) supported by the vertical piece 32b The auxiliary wheel 30 is rotatably mounted.

The plate-like member 40 is made of a material that can be elastically deformed by a plate material having a certain degree of flexibility, such as rubber or a synthetic resin material.
The left and right side edges 40b, 40b of the plate member 40 are formed in an upwardly spread shape so that the upper side is located laterally outside the lower side. The overall shape of the plate-like member 40 is an inverted trapezoidal shape in which the length in the left-right direction of the upper end edge 40 a is longer than that of the lower end edge 40 c in the front-rear direction.

As shown in FIG. 5, a notch 40 d extending in the vertical direction is formed at the lower portion of the left-right direction central portion on the lower end edge 40 c side of the plate-like member 40. As shown in FIGS. 4 and 5, a reinforcing member 41 having a rigidity higher than that of the plate-like member 40 is attached to the periphery of the cutout 40 d in a state along the cutout 40 d.
In the reinforcing member 41, when the plate-like member 40 pushed by the mud tries to be displaced rearward during the tillage operation, the support member 31 located at the rear abuts from the rear side, and the notch portion 40d is formed. In order to limit the amount of rearward deformation of the plate-like member 40 in the vicinity of the place where the.

That is, in the reinforcing member 41, the rear projecting lateral piece 41b along the vertical direction at the lateral side position around the notch 41d of the reinforcing member 41 itself and the rear projecting upper piece 41a along the lateral direction at the upper position of the notch 41d. And, a rear protruding upper end piece 41c is formed along the left and right direction at the upper end position of the reinforcing member 41.
Then, as shown in FIGS. 4 and 6, the rear protruding upper piece 41a abuts on the horizontal piece 32a of the mounting bracket 32 provided at the lower end of the support member 31, and the rear protruding horizontal piece 41b is of the mounting bracket 32. The displacement of the reinforcing member 41 to the rear side can be suppressed by coming into contact with the vertical piece 32 b, and the amount of deformation to the rear of the plate-like member 40 can be limited.
The rear protruding upper end piece 41c, together with the rear protruding upper piece 41a, functions as a rib member for suppressing the deformation of the reinforcing member 41 itself. Thus, when an external force from the front to the rear acts on the end of the plate-like member 40 in the lateral direction, the central portion of the plate-like member 40 in the lateral direction and the reinforcing member 41 are laterally outward in the lateral direction. It is possible to limit the degree to which it is bent and deformed so as to be retracted more to the side.

Further, as shown in FIGS. 4 and 6, the position of the lower end portion of the reinforcing member 41 in the vertical direction coincides with or substantially coincides with the position of the portion of the auxiliary wheel 30 in contact with the field during the cultivation operation. The lower end portion of the plate-like member 40 protrudes below the lower end portion of the reinforcing member 41.
Therefore, at the time of tilling operation traveling with the auxiliary wheel 30 grounded, the lower end portion of the plate-like member 40 that protrudes below the lower end portion of the reinforcing member 41 is bent backward as shown by the phantom line in FIG. In the state where it is made to be grounded, it is easy to control the further sedimentation of plate member 40.

The lateral width of the notch 40 d of the plate member 40 and the notch 41 d of the reinforcing member 41 is wider than the lateral width of the auxiliary wheel 30. As shown in FIGS. 3 and 6, the auxiliary wheel 30 and the plate member 40 are attached in a state where a portion on the front side of the support shaft 34 of the auxiliary wheel 30 is inserted into the cutouts 40d and 41d. The plate member 40 is provided to overlap with the auxiliary wheel 30.
Thus, the plate-like member 40 is a position in the machine longitudinal direction of a portion where the position of the lower end portion of the plate-like member 40 in the machine longitudinal direction is in contact with the field of the auxiliary wheel 30 during cultivation operation. And are configured to match or nearly match.

A frame member 42 made of a metal plate is attached to the upper end portion of the plate-like member 40 and extends in the left-right direction of the machine along the upper end edge 40 a. The frame member 42 is higher in rigidity than the plate-like member 40, and functions as a reinforcing member attached in a state extending over the left and right of the plate-like member 40 and facing the surface of the plate-like member 40. By attaching the frame member 42 acting as the reinforcing member to the upper end portion of the plate-like member 40, the elastically deformable range of the plate-like member 40 is limited. The connection of the plate-like member 40 to the travel assist tool 3 is performed via the frame member 42 at the upper end.
The traveling assistance tool 3 to which the plate-like member 40 is connected is inserted at the upper end side into the support cylindrical portion 19a provided at the rear end portion of the rear frame 19, and extended downward at the lower end side. The support member 31 is provided with a stay 3A extending in the left-right direction of the machine body as a mounting portion for mounting the plate-like member 40.

The stay 3A is a fixed stay 35 fixed by welding to the support member 31 at the middle in the extension direction of the support member 31 extending downward, and an intermediate mounted detachably to the fixed stay 35. A stay 36 is provided.
The fixed stay 35 and the intermediate stay 36 are connected and fixed to each other by inserting a connection bolt 36a fixed to the intermediate stay 36 side into a connection hole 35a provided on the fixed stay 35 side by tightening with a bolt and a nut.
A frame member 42 of the plate-like member 40 is connected to the stay 3A in a state where the frame members 42 are face-matched in the longitudinal direction of the machine body, by a fixing mechanism 5 described later.

[Fixing mechanism]
The fixing mechanism 5 includes a first locking portion 50 provided on the stay 3A having a function as an attachment portion supported on the body main body side, and a second locking portion 51 provided on the frame member 42 of the plate-like member 40. And.
The first locking portion 50 is formed in an intermediate stay 36 which is detachably connected to the fixed stay 35 among the stays 3A so as to penetrate the intermediate stay 36 in the thickness direction of the plate member 40. It is a dharma hole 52 (corresponding to a hole). The second locking portion 51 is a headed pin 53 (corresponding to a projecting member) projected along the thickness direction of the plate-like member 40 so as to be able to be engaged with and detached from the dharma hole 52.

The engagement and disengagement of the first locking portion 50 and the second locking portion 51 is performed as follows.
As shown in FIGS. 7 and 8, the head 53a of the headed pin 53 is inserted into the large diameter hole 52a of the dharma hole 52 with the frame member 42 facing from the front side to the front face of the intermediate stay 36. (See FIG. 8 (a)).
From this state, as shown in FIG. 8 (b), the frame member 42 is slid in the right lateral direction in the figure, and the shaft 53b of the headed pin 53 is made smaller than the small diameter hole 52b (long Position in the hole). The state in which the shaft portion 53b of the head pin 53 is positioned at the deepest portion in the small diameter hole portion 52b is the state in which the plate member 40 is positioned at the use position for tilling work. In this use position, the relative movement in the longitudinal direction of the machine is restricted in a state in which the head attached pin 53 of the second locking portion 51 is engaged with the dharma hole 52 of the first locking portion 50.
Conversely, when the frame member 42 is slid in the left lateral direction in the drawing to position the head portion 53a of the headed pin 53 in the large diameter hole 52a (corresponding to the engagement portion) of the daruma hole 52, the head The pin 53 can be pulled out of the dharma hole 52.

  The fixing mechanism 5 performs a second locking on the small diameter hole 52b of the dharma hole 52 which is the first locking portion 50 so that the dharma hole 52 and the headed pin 53 are locked at the use position. A guide mechanism 5A for guiding the shaft portion 53b of the headed pin 53 which is the portion 51, and a lock mechanism 5B for holding the plate member 40 at the use position are provided.

[Guide mechanism]
The guide mechanism 5A is configured by the shape of the above-mentioned Dharma hole 52 itself and the shaft portion 53b of the headed pin 53.
That is, of the Dharma hole 52, the large diameter hole portion 52a allows the insertion of the head portion 53a of the headed pin 53, and shifts the shaft portion 53b located in the large diameter hole portion 52a to the small diameter hole portion 52b side. It will guide you on the occasion. Then, the small diameter hole 52b itself guides the shaft 53b to reach the deepest portion of the small diameter hole 52b.

  More specifically, the headed pin 53 is provided with a head portion 53a protruding radially outward of the shaft portion 53b. The head portion 53a is smaller in diameter than the large diameter hole 52a of the darma hole 52 and larger in diameter than the small diameter hole 52b, and the shaft 53b has a diameter capable of entering into the small diameter hole 52b. There is. The head portion 53a is provided at a predetermined distance from the proximal end of the shaft 53b. The predetermined distance from the base end portion of the shaft portion 53b to the head portion 53a is a distance corresponding to the thickness of the peripheral portion of the intermediate stay 36 which is the mounting portion where the darma hole 52 is formed. It is.

The daruma hole 52 has a hole diameter along the length direction of the intermediate stay 36, which is the hole diameter of the large diameter hole 52a plus the same direction length of the long hole like small diameter hole 52b. The hole diameter of the Dharma hole 52 along the width direction of the intermediate stay 36 is the same as the hole diameter of the large diameter hole portion 52a. That is, the hole diameter of the dharma hole 52 along the length direction of the intermediate stay 36 is larger than the hole diameter along the width direction of the intermediate stay 36.
The Dharma hole 52 formed in this manner is provided along the longitudinal direction of the intermediate stay 36 along the left-right direction of the machine body along the major axis direction, and is a straight long hole at the lateral position of the large diameter hole 52a. A small diameter hole 52b is provided. In the linear long hole by this small diameter hole 52b, there is a use position for positioning the shaft 53b at one end thereof, and the shaft 53b and the head 53a of the headed pin 53 can be inserted into the other end There is a large diameter hole 52a as the engagement portion.

[Locking mechanism]
The lock mechanism 5B includes a first lock member 54 attached to the frame member 42 of the plate member 40 and a second lock member 55 provided on the intermediate stay 36 of the stay 3A.
The first lock member 54 is an L-shaped plate member which is pivotally connected to the frame member 42 using a support shaft 54a, and is rotatable about the axial center of the support shaft 54a to be changeable in posture. , And an abutment surface 54b on one side.
The second lock member 55 is provided with an abutment surface 55a which is shared by the intermediate stay 36 and is constituted by the end on the side where the first lock member 54 exists among the ends in the longitudinal direction of the intermediate stay 36. There is.

In this lock mechanism 5B, as shown in FIG. 8A, the first lock member 54 is in the lock release attitude in which the contact surface 54b thereof is separated from the contact surface 55a of the second lock member 55, and the intermediate stay is maintained. The headed pin 53 is inserted into the Dharma hole 52 of 36.
From this state, as shown in FIG. 8B, the first lock member 54 is rotated counterclockwise in the drawing, and the contact surface 54b of the first lock member 54 contacts the second lock member 55. When operated in the locked state in contact with the surface 55a, the shaft 53b of the headed pin 53 located in the dharma hole 52 of the intermediate stay 36 is moved to the use position of the deepest portion of the small diameter hole 52b. Be
In other words, the first lock member 54 acts on the second lock member 55 in the same direction as the guiding direction of the guide mechanism 5A, so that the dharma hole 52 as the first locking portion 50 and the second locking portion In this state, the locking of the headrest pin 53 as 51 is maintained.

[Mushing member]
As shown in FIGS. 4, 5 and 7, soil corresponding to the upper portions of the left and right sides of the plate-like member 40 projects laterally from the left and right sides of the plate-like member 40. The right and left soiling members 6 capable of assisting the scraping are provided.
The earthing member 6 is made of an elastically deformable material, such as a relatively hard rubber or a synthetic resin material, having a hardness equal to or higher than that of the plate-like member 40.

The jambing member 6 is formed in a flat plate shape, and in a state of facing the plate member 40, the plate member 40 is provided via a fastener 60 provided across the plate member 40 and the frame member 42 opposed thereto. It is supported by
That is, a long hole-like support hole 61 (corresponding to a long hole) is formed on the side of the piled-up member 6 as a support portion for supporting the piled-up member 6 on the plate-like member 40. It is provided. The fastener 60 includes a connection bolt 62 (corresponding to a shaft member) as a shaft member which can be inserted into the long hole-like support hole 61, and a cap nut 63 screwed to a screw portion of the connection bolt 62.
The connection bolt 62 has an axial center in a direction intersecting with the surface of the plate member 40 in the vicinity of both right and left side portions of the plate member 40 and near both end portions of the frame member 42 opposite thereto. In the thickness direction of the plate-like member 40, a tightening operation is provided.
The threaded portion of the connection bolt 62 is directed from the front side to the rear side, and the large cap nut 63 of the grip portion is engaged with this thread portion from the rear side, and the connecting nut 62 is tightened by rotating the cap nut 63 It is configured to be able to switch between the state and the relaxed state.

The loosening member 6 provided in this manner is rotatably supported about the axial center of the connection bolt 62 by loosening the fastener 60, and changes the posture with respect to the plate member 40 about the axial center of the connection bolt 62. be able to. And by fastening the fastener 60, it can be hold | maintained at the attitude | position changed by the rotation operation.
In addition, since the support hole 61 is in the form of a long hole, the jamming member 6 can be slid by the length of the support hole 61.

  As a result, as shown by phantom lines in FIGS. 4 and 7, the jamming member 6 projects in a state of projecting laterally outward from the left and right ends of the plate-like member 40 or in a state of projecting upward. It is possible to change the projecting state with respect to the rod-like member 40. At this time, as shown in FIGS. 4 and 7, the jamming member 6 is sandwiched by the plate-like member 40 and the frame member 42. Therefore, it is easy to maintain the holding posture of the soiling member 6 by the plate member 40 in a strong state as compared with the case where the plate member 40 or the frame member 42 is simply attached to one side without using such a sandwiching structure. .

  Further, as shown by solid lines in FIG. 4 and FIG. 7, it is possible to change the state to a retracted state in which the jamming members 6 do not protrude laterally outward from the left and right ends of the plate-like member 40. In this retracted state, since the earthing member 6 is located between the plate member 40 and the frame member 42 and held between them, external force by earth pressure from the front and rear direction and the vertical direction is directly applied to the earthing member 6 There is no risk of In addition, if the state is changed to such a retired state, the soil storage device 4 can be compactly stored when not in use.

As described above, not only in the case where the earthing member 6 is in a retracted state in which it does not protrude at all laterally outward from the left and right ends of the plate member 40, the earthing member 6 is laterally outward from the left and right ends of the plate member 40 Even in the case of being stored in a state of being slightly protruded, it is advantageous in terms of strength if the jambing member 6 is positioned and sandwiched between the plate-like member 40 and the frame member 42.
That is, when the jambing member 6 is positioned and sandwiched between the plate member 40 and the frame member 42, even if an external force in the front-rear direction due to earth pressure or the like acts on the projecting portion of the jambing member 6, the jambage It is possible to suppress the change in the posture of the member 6 as much as possible at the holding position by the plate member 40 and the frame member 42, and to maintain the attachment state to the plate member 40 and the frame member 42 firmly.

[1 of another embodiment]
In the embodiment, the support member 61 is provided with the support hole 61 having a long hole shape, and the connection bolt 62 is inserted into the support hole 61 to rotate the connection bolt 62 about its axial center, and the support hole 61. Although the thing of the structure which enabled it to be able to change attitude | position in the slide direction in alignment with was illustrated, it is not limited to this structure.
For example, as shown in FIG. 10, two (three or more multiple) guide grooves 61a and 61b are formed in the jambing member 6, and the guide pin 64 fitted in one guide groove 61a is a plate member A connecting bolt 62 similar to that shown in FIGS. 4 and 7 is mounted in the other guide groove 61b so as to project from the frame member 42 of 40, and the connecting and fixing operation is carried out by tightening the cap nut 63 having a large grip. , And may be configured to be changeable in attitude by loosening the cap nut 63. In addition, although only what was mounted | worn with the upper right end part of the plate-shaped member 40 was illustrated in FIG. 10 as the earthing member 6, the earthing member 6 of the same structure is symmetrically mounted also in the upper left end.
According to this structure, the jamming member 6 can be easily slid along the longitudinal direction of the guide grooves 61a and 61b.
The other configuration may adopt the same configuration as that of the embodiment described above.

[2 of another embodiment]
In the embodiment, the support member 61 is provided with the support hole 61 having a long hole shape, and the connection bolt 62 is inserted into the support hole 61 to rotate the connection bolt 62 about its axial center, and the support hole 61. In the illustrated structure, the posture can be changed in the sliding direction, or the structure in which the sliding movement is performed along the length direction of the plurality of guide grooves 61a and 61b. It is not a thing.
For example, as shown in FIG. 11, one round hole-shaped support hole (not shown) is formed in the jambing member 6, and a connection bolt 62 similar to that shown in FIGS. 4 and 7 is formed in the support hole. , And may be configured so as to be changeable in connection and fixation by the tightening operation of the large cap nut 63 of the grip portion, and by the loosening operation of the cap nut 63. In addition, although only what was mounted | worn with the upper right end part of the plate-shaped member 40 was illustrated in figure as the earthing member 6, the earthling member 6 of the same structure is symmetrically mounted also in the upper left end.
According to this structure, the mounting angle of the mounting member 6 with respect to the plate member 40 can be easily changed by rotating the mounting member 6 around the axial center of the connection bolt 62.
When the range of angle change of the jambing member 6 is set to a range including 360 degrees or around 180 degrees, as shown by a solid line in FIG. It is possible to easily switch the posture between the projecting posture extending laterally outward and the retreating posture positioned inside the outer peripheral edge of the plate-like member 40 as shown by a phantom line.
The other configuration may adopt the same configuration as that of the embodiment described above.

[3 of another embodiment]
In the embodiment, the earthing member 6 is rotated about the axial center of the connection bolt 62, moved in the sliding direction along the support hole 61, or rotated and slid relative to the plate-like member 40, Although the thing of the structure which changed the attachment attitude | position of the earthing member 6 with respect to the plate-shaped member 40 was illustrated, it is not necessarily limited to this structure.
For example, although not shown in the drawings, the jamming member 6 is attached to the plate-like member 40 in a projecting posture extending outward from both lateral ends of the plate-like member 40 via a connection bolt etc. The state may be changed to a retreated state in which it does not protrude from the left and right end portions of the plate-like member 40 by removing the soiling member 6 from the plate-like member 40.
The other configuration may adopt the same configuration as that of the embodiment described above.

[4 of another embodiment]
In the embodiment, as shown in FIG. 4, FIG. 7, and FIGS. 10 and 11, the jamming member 6 is extended laterally outward from the both lateral ends of the plate member 40 with respect to the plate member 40. Although an example of a structure in which the posture can be switched to the projecting posture and the retreating posture positioned inside the outer peripheral edge of the plate-like member 40 as shown by imaginary lines is illustrated, the structure is necessarily limited to this structure. It is not a thing.
For example, although not shown in the drawings, even if it is moved as much as possible in the direction of retracting the earthing member 6, the whole state of the earthing member 6 is not positioned inside the outer peripheral edge of the plate member 40; It may be in the state where it is located in the outside of the peripheral edge of member 40. That is, the retreating posture is not limited to the state in which the whole of the soiling member 6 is hidden inside the outer peripheral edge of the plate-like member 40, and the soiling member 6 partially exists outside the outer peripheral edge of the plate-like member 40 It also includes the state.
The other configuration may adopt the same configuration as that of the embodiment described above.

[5 of another embodiment]
In the embodiment, as shown in FIG. 4 and FIG. 7, when the jamming member 6 is positioned between the plate-like member 40 and the frame member 42, the jamming posture can be performed in either the projecting posture or the retreating posture. Although the member 6 illustrated the structure pinched | interposed between the plate-shaped member 40 and the frame material 42, it is not necessarily limited to this structure.
For example, the jambing member 6 may be provided on the front side of the plate member 40 or on the rear side of the frame member 42.
The other configuration may adopt the same configuration as that of the embodiment described above.

[6 of another embodiment]
In the embodiment, as shown in FIGS. 4 to 7 and FIGS. 10 and 11, the structure in which the piled up member 6 is supported by the plate-like member 40 is exemplified, but the structure is necessarily limited to this structure is not.
For example, although not shown, the soil gatherer 6 is supported separately from the plate-like member 40 at an appropriate position on the machine body side such as the stay 3A, and the soiling by the plate-like member 40 along with the traveling of the walking type work machine After the scraping is performed, the soil may be scraped to the center side of the weir by the earthing member 6 subsequently or simultaneously.
The other configuration may adopt the same configuration as that of the embodiment described above.

[4 of another embodiment]
In the embodiment, as the traveling aid 3, the supporting member 31 supported by the rear frame 19 and the auxiliary wheel 30 provided on the lower end side of the supporting member 31 are exemplified. It is not limited to the structure.
For example, as shown in FIG. 12 and FIG. 13, the traveling assistance tool 3 includes a hook-like ground contact body 30A and a long supporting member 31 supported at the rear end of the rear frame 19 It is also good. The hook-like ground contact body 30A is provided with a ground contact surface configured wider in the left-right direction than the support member 31.
Even in this structure, the plate at the lower end of the plate member 40 in the longitudinal direction of the machine matches or substantially coincides with the position in the longitudinal direction of the machine of the portion of the ground contact body 30A that is grounded to the field. The lower end side of the support member 31 and the notches 40d and 41d into which the hook-like ground contact body 30A is inserted are provided in the shape member 40 and the reinforcing member 41.
The other configuration may adopt the same configuration as that of the embodiment described above.

[5 of another embodiment]
In the embodiment, as the traveling aid 3, the supporting member 31 supported by the rear frame 19 and the auxiliary wheel 30 provided on the lower end side of the supporting member 31 are exemplified. It is not limited to the structure.
For example, as shown in FIG. 14 and FIG. 15, as the traveling assistance tool 3, a resistance portion 30 </ b> B grounded to a field at a plurality of locations in the lateral direction of the machine and a round pipe-shaped support connected to the upper side of the resistance portion 30 </ b> B A resistance rod provided with the member 31 may be used.
In this case, the resistance portion 30B provided on the lower end side of the resistance rod is bifurcated as shown in FIG. 15, and the lower end portion of the branched resistance portion 30B is bent toward the rear of the machine body.
Also in this structure, the position of the lower end portion of the plate member 40 in the longitudinal direction of the machine matches or substantially matches the position in the longitudinal direction of the machine of the portion of the resistance portion 30B that is grounded to the field. The plate-like member 40 and the reinforcing member 41 are provided with notches 40d and 41d into which the bifurcated resistance portion 30B is inserted.
The resistance portion 30B is not limited to the bifurcated structure as described above, but may have a structure in which the lower end side is branched into three or more branches and a plurality of resistance portions 30B are provided. Further, the present invention is not limited to the configuration in which the lower end side is branched and provided with the plurality of resistance portions 30B, and even if the structure is provided with the plurality of resistance rods provided with the single resistance portion 30B. Good.
Furthermore, the resistor portions 30B are not necessarily provided at the central portion in the left-right direction, but may be provided at a plurality of portions deviated from the central portion in the left-right direction.
The other configuration may adopt the same configuration as that of the embodiment described above.

[9 of another embodiment]
Although the structure which employ | adopted the left-right paired traveling wheel 14 was illustrated as a drive travel apparatus in the embodiment, it is not necessarily limited to this structure.
For example, as the traveling wheel 14, a single wheel type may be adopted in which a single traveling wheel 14 is adopted. The point is to use a drive travel device configured to be narrower than the tillage width by the rotary tiller 2.
The other configuration may adopt the same configuration as that of the embodiment described above.

[10 of another embodiment]
Although the structure which employ | adopted the driving | running | working driving wheel 14 was employ | adopted as a drive travel apparatus was illustrated in embodiment, it is not necessarily limited to this structure.
For example, the drive travel device is not limited to the wheels and may be configured by crawlers. Further, the drive traveling device is not limited to a structure provided with a dedicated drive traveling device, and the rotary tilling device 2 can be used as a driving and traveling device by utilizing the driving rotation of the tilling claw 20a in the rotary cultivating device 2 for propulsive force of the machine body. It may be of a shared structure.
The other configuration may adopt the same configuration as that of the embodiment described above.

[11 of another embodiment]
In the embodiment, the plate-like member 40 of the soil cultivator 4 is exemplified by a single member having an integral structure as a whole, but the present invention is not necessarily limited to this structure.
For example, the plate-like member 40 is configured of a plurality of divided plate members divided at one or a plurality of locations in the left-right direction, and upper ends of the plurality of divided plate members are connected by the frame member 42 Alternatively, one plate-like member 40 may be configured.
The other configuration may adopt the same configuration as that of the embodiment described above.

[12 of another embodiment]
The embodiment exemplifies a structure in which the stay 3A for attaching the plate-like member 40 to the support member 31 is formed of separate members of the fixed stay 35 and the intermediate stay 36, but the structure is not necessarily limited to this structure. Absent.
For example, the intermediate stay 36 may be integrated with the fixed stay 35. In addition, appropriate structures can be adopted for the shapes of the fixed stay 35 and the intermediate stay 36 and the specific connection structure.
The other configuration may adopt the same configuration as that of the embodiment described above.

  The present invention can be applied to various walking-type work machines that perform soil accumulation work and medium cultivation work.

2 tilling device 3 travel aid 3A mounting part (stay)
DESCRIPTION OF SYMBOLS 4 Soiling apparatus 5 Fixing mechanism 6 Earthing member 14 Drive traveling apparatus 16 Steering handle 40 Plate-like member 41, 42 Reinforcement member 60 Fastener 61 Long hole (support hole)

Claims (8)

A walking type work machine provided with a drive travel device and capable of traveling a tillage work between gutters,
An aircraft body to which a steering handle is connected and which is steered by an operator;
A tilling device supported at the rear of the airframe main body;
A plate-shaped member provided behind the cultivating device and capable of scraping up on the left and right ridges while elastically deforming the soil cultivated by the cultivating device during traveling of the cultivating operation;
It is provided corresponding to the upper part of the left and right both sides in the above-mentioned plate-like member, and it has the right and left earthing members which can project to the left and right side from the left and right both sides of the above-mentioned plate-like member And
The walk-behind work machine according to claim 1, wherein the jamming member is capable of changing a projecting state from the plate-like member.   The walk-behind work machine according to claim 1, wherein the jambing member is elastically deformable and supported by the plate-like member in a state of being overlapped with the plate-like member.   The walk-behind work machine according to claim 2, wherein the jambing member is supported by the plate-like member so as to be rotatable about an axial center intersecting the surface of the plate-like member.   The walk-behind work machine according to claim 2 or 3, wherein the jambing member is supported by the plate-like member so as to be slidable along the surface of the plate-like member.   A long hole which is provided on one of the plate-like member and the soil-concentrating member and which is provided on the support portion for supporting the soil-concentrating member to the plate-like member, and which extends along the surface of the plate-like member; A shaft member which protrudes along the axis crossing the surface of the plate-like member from the other side with the jamming member, is inserted into the long hole, is slidably movable within the long hole, and is rotatable with respect to the long hole The walking type working machine according to claim 4, wherein and. A stiffening member which is higher in rigidity than the plate-like member and attached to the upper portion of the plate-like member in a state extending across the left and right of the plate-like member and facing the surface of the plate-like member is provided.
The plate-like member is supported by the machine body via the reinforcing member,
The jamming member is disposed between the plate-like member and the reinforcing member,
A fastener provided across the plate-like member and the reinforcing member is provided, and the pinching member is pinched by the plate-like member and the reinforcing member by tightening the fastener, and the state of the pinching member The walking type working machine according to any one of claims 2 to 5, wherein is held. A stiffening member which is higher in rigidity than the plate-like member and attached to the upper portion of the plate-like member in a state extending across the left and right of the plate-like member and facing the surface of the plate-like member is provided.
The plate-like member is supported by the machine body via the reinforcing member,
The jamming member is disposed between the plate-like member and the reinforcing member,
The walk-behind work machine according to any one of claims 2 to 6, wherein the jambing member is changeable to a storage state in which it is accommodated between the reinforcing member and the plate-like member.   The walk-behind work machine according to any one of claims 1 to 7, wherein the jamming member can be changed into a retreated state in which it does not protrude from both left and right end portions of the plate-like member.

Images