JP3418151B2 - Farm work machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work machine for performing earthwork on soil in a field. 2. Description of the Related Art Conventionally, this kind of agricultural working machine has, for example, a pair of opposing frames which are positioned so as to be spaced apart from each other, and a tilling operation is performed between these opposing frames. An earth working body such as a tilling rotary working body is rotatably provided. Further, a pair of cover side plates for preventing the scattering of soil is attached to both opposing frames, and these two cover side plates are spaced apart from each other at positions on both left and right sides of the soil work body. They are located facing each other. [0004] However, in this conventional agricultural working machine, the opposing surface of the cover side plate is exposed toward the earthworking body. There is a problem that the spattered soil adheres due to the rotation of the soil work body. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an agricultural working machine which can appropriately prevent soil from adhering to a facing surface of a cover side plate and has a good assembling property. . [0006] Means for Solving the Problems] 請 Motomeko 1 agricultural machine according includes a counter frame pairs positioned in a state spaced opposed, rotatably provided between these two facing frames, and cultivating rotary working member to the tilling work on field soil by rotating, is provided in a state spaced opposed on both sides the position of the tilling rotary working member, the facing frame
A cover side plate that is connected and fixed to the rear end of the cultivating rotary work body to prevent the scattering of soil due to the rotation of the tilling rotary work body, and that the tip side moves up and down to the rear position of the tilling rotary work body. It is provided rotatable around the end side,
A ground leveling member for flat leveled field surface, the the edges of the position opposed to the ground leveling member at the opposing surface of each of the two covers side plates thereof is mounted along the edge, the cover plate member
Section L located over the lower edge and the rear edge of
A stepped plate body for engaging an elongated shape shape, before SL on the opposing surface of each of the two covers side plates thereof is mounted along the opposing surface, the surface of the tilling rotary working member and the opposite side is smooth and a soil adhesion prevention plate body is formed in a planar shape, the soil
The anti-adhesion plate is made of a thin stainless steel plate
And a stepped plate body having a lower edge and a rear edge for the locking.
And the cover side plate is in a state of being fitted and locked.
Is what it is. In this configuration, the rotary tilling work
Since the soil-adhering plate having the surface facing the body formed into a smooth surface shape is attached to each of the opposing surfaces of the two cover-side plates along the opposing surfaces, the soil-adhering preventing plate is provided. The soil does not adhere to the flat surface of the plate, and the soil is appropriately prevented from adhering to the opposing surface of the cover-side plate. Also, the soil adhesion preventing plate is formed by fitting a predetermined edge portion of the soil adhesion preventing plate between a stepped plate for locking having an elongated shape having a substantially L-shaped cross section and a cover side plate. By locking, the cover side plate is attached to the opposing surface of the cover side plate along this opposing surface, so that the cover side plate and the cover side plate and Not only is it difficult for soil to enter between the soil adhesion preventing plates, but also the soil adhesion preventing plates can be easily attached. Further, the gap generated between the ground preparation body and the cover side plate body can be reduced as compared with a configuration in which the soil adhesion preventing plate body is attached using only the fixing tool including the bolt and the nut. In addition,
The anti-adhesion plate was formed of a thin stainless steel plate member
As a result, the required strength is secured compared to the synthetic resin construction.
It can be easily designed to be thin. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of a cultivating work machine according to the present invention, for example, a tilling work machine which is detachably mounted on a tractor and used, will be described with reference to the drawings. 1 to 3, reference numeral 1 denotes an airframe. The airframe 1 travels in a traveling direction X in a field together with a tractor (not shown). The main frame 2 has an elongated and tubular shape having a longitudinal direction. The upper ends of a pair of left and right chain cases 3 and brackets 4 as opposed frames are fixed to both ends of the main frame 2 in the longitudinal direction. Are formed in a substantially elongated rectangular shape having a longitudinal direction in the up-down direction, and are located in a state of being spaced apart and opposed to each other. 1 and 2 are provided between the lower ends of the pair of left and right chain cases 3 and brackets 4, respectively.
As shown in FIG. 2, a tilling rotary work body 5 as a soil work body for tilling work on soil in a field by rotation is rotatably provided, and the cultivation rotary work body 5 has an axial direction of the machine body 1. It has a tilling axis 6 that is aligned in the horizontal direction,
A plurality of tilling claws 7 are radially fixed to the outer peripheral surface of the tilling shaft 6. The two ends of the tilling shaft 6 of the tilling rotary work body 5 in the axial direction are paired with a pair of right and left chain cases 3.
And the inner peripheral side of the cultivating shaft bosses 11 and 11 as cylindrical earth working body holders protruding from the inner surface side which is the opposing surface side of each of the brackets 4, via a bearing 12. The shaft 6 is rotatably held by a pair of left and right tilling shaft bosses 11. On the outer peripheral surface of the base end of each tilling shaft boss 11, a concave locking portion 13 such as a groove is annularly recessed along the circumferential direction of the outer peripheral surface of the base end. At the rear end of the pair of left and right chain cases 3 and brackets 4 on the rear side of the body 1, as shown in FIGS. 2 and 3, connecting plate portions 15, 15 are formed. A pair of left and right cover side plates 16, 16 are connected and fixed to the portions 15, 15. The pair of left and right cover side plates 16 are located at the left and right sides of the tilling rotary working body 5 in a state where they are spaced apart from each other, and the body of soil such as a mud based on the rotation of the tilling rotary working body 5. Prevents scattering to one side. As shown by a two-dot chain line in FIG. 2, an inner surface, which is an elongated shape bent at two intermediate points and has a substantially L-shaped cross section, is provided on the inner surface of each of the two cover side plate members 16 facing each other. A stepped plate 17 for locking is fixed by welding or the like, and the stepped plate 17 is located at a predetermined edge portion at a position opposed to the leveling body 20 such as a leveling plate. That is, the stepped plate 17 is
A lower edge of the cover side plate 16 along the longitudinal direction of the body 1;
It is located over the lower rear edge of the fuselage 1 along the oblique direction from front to rear and high and the upper rear edge along the oblique direction from front to rear and low. The stepped plate 17 is shown in FIGS.
As shown in FIG. 3, the locking plate portion 17a has an elongated thin plate shape bent at two intermediate points, and is elongated along the locking plate portion 17a on one surface of the locking plate portion 17a. Are formed integrally with each other. The stepped portion 17b of the stepped plate 17 is fixed to the inner surface of the cover-side plate 16 by welding or the like, and a gap is formed between one side edge of the locking plate 17a and the inner surface of the cover-side plate 16. The stepped plate 17 forms a slightly protruding concave locking portion 18 along a predetermined edge of the facing surface of the cover-side plate 16 along the edge. A receiving step 19 having a substantially L-shaped cross section is formed at the front end of the cover-side plate 16 along the upper and lower sides on the front side of the body 1. As shown in FIGS. 3 and 4, between the upper portions of the pair of left and right chain cases 3 and the brackets 4, as shown in FIGS. An elongated rectangular plate-shaped cover upper plate 21 is fixed via a mounting frame 22. This cover upper plate
Numeral 21 is located above the tilling rotary work body 5 and prevents the earth such as mud scattered above the machine body 1 based on the rotation of the tilling rotary work body 5. As shown in FIGS. 2 and 3, the upper end of the grounding body 20 is rotatable at one end in the width direction of the cover upper plate 21, that is, at the rear end on the rear side of the body 1. The ground preparation body 20 is rotatable about an upper end side, which is a base end side, so that a lower end side, which is a front end side, moves up and down. The other ends of the connecting arms 24, 24, one ends of which are connected to the main frame 2, are connected to the arm connecting portions 23, 23 on the left and right sides of the terrain body 20.
Is maintained in a predetermined posture by the connecting arm 24 in accordance with the condition of the field, and the field scene is leveled flat. Here, on each of a pair of left and right side parts 30 constituted by the chain case 3, the bracket 4, the cover side plate body 16 and the like of the body 1, the tilling rotary work body 5 is provided on the inner surface of the side parts 30. Soil adhesion preventing means 31 is provided for preventing the soil splashed by the rotation from adhering. The soil adhesion preventing means 31 is shown in FIGS.
As shown in FIG. 7, for example, a first stainless steel side plate 35 and a second stainless steel side plate 36 as soil-adhesion prevention plates formed of thin flat stainless steel plate members having the same thickness.
The first stainless steel side plate 35 and the second stainless steel side plate 36 are located on the same surface on the inner surface of the side surface portion 30. First, as shown in FIG. 4, the first stainless steel side plate 35 is formed in a shape corresponding to the chain case 3 or the bracket 4, and is formed on the inner surface which is the facing surface of the corresponding chain case 3 or the bracket 4. Are attached so as to overlap with each other, and cover substantially the entire surface except the upper and lower ends of the inner surface. The first stainless steel side plate
The inner surface on the side facing the 35 tilling rotary work body 5 is formed in a smooth surface shape so that soil does not adhere. An approximately triangular projecting edge 41 projecting forward in the traveling direction X of the fuselage 1 is formed on the upper portion of the front end of the first stainless steel side plate 35 on the front side of the fuselage 1. I have. An elongated rectangular plate-shaped notch 42 having a longitudinal direction in the vertical direction is formed in a lower portion of the rear end edge of the first stainless steel side plate 35 along the vertical direction. Further, a semi-recessed notch is formed at the center of the lower end edge of the first stainless steel side plate 35 to form a semi-concave arc-shaped fitting edge 43. The fitting edge 43 is used as a tilling shaft. The boss 11 is fitted and locked into the upper half of the concave locking portion 13. A plurality of bolt holes 44 are formed at intervals in the peripheral portion of the first stainless steel side plate 35 other than the fitting edge 43. The bolt holes 44 pass through bolts 55 from the inner surface side of the body 1, and a nut 56 is screwed onto a shaft portion of the bolt 55 protruding from the outer surface of the body 1. The upper edge of the first stainless steel side plate 35 is fixed by being sandwiched between the chain case 3 or the bracket 4 and the corresponding mounting frame 22 of the cover upper plate 21. Next, the second stainless steel side plate 36 is formed in a shape corresponding to the cover side plate 16 as shown in FIGS. It is mounted so as to overlap, and covers almost the entire inner surface. The inner surface of the second stainless steel side plate 36 on the side facing the tillable rotary working body 5 is:
It is formed in a smooth surface shape so that soil does not adhere. A predetermined edge portion of the second stainless steel side plate 36 along three different directions, that is, a lower edge portion of the body 1 in the front-rear direction, and a diagonal direction of the front low, rear high of the body 1. The lower rear edge along the lower side and the upper rear edge along the oblique direction from the front to the rear of the fuselage 1 are stepped plate members 17.
Are fitted and locked in the concave locking portion 18 formed by the above. In addition, the concave locking portion of the peripheral portion of the second stainless steel side plate 36
A plurality of bolt passage holes 50 are formed in the portion not located in 18 at intervals. The bolt passing hole 50 allows a bolt 55 to pass through from the inner surface side of the body 1, and a nut 56 is screwed to a shaft portion of the bolt 55 protruding from the outer surface of the body 1. On the other hand, in the lower part of the front end of the second stainless steel side plate 36 along the vertical front of the body 1, a vertical direction fitting into the notch 42 of the rear end edge of the first stainless steel side plate 35 is provided. An elongated rectangular plate-shaped protruding edge portion 51 having a longitudinal direction is formed at the bottom. Then, as shown in FIGS. 2 and 7, the chain case 3 or the bracket 4 and the cover side plate 16
Are connected by, for example, a connection plate 53, three pairs of bolts 55 and nuts 56, and the like. In this connection, the first
The stainless steel side plate 35 and the second stainless steel side plate 36, together with the receiving step 19 of the cover side plate 16, the connecting plate 15 of the chain case 3 or the bracket 4, and the connecting plate 53,
Multiple layers overlap. On the other hand, as shown in FIGS. 1 to 3, an input shaft is provided at a central portion of the main frame 2 of the body 1 in the longitudinal direction.
A PTO 61 of the tractor (not shown) is connected to the input shaft 61 via a universal joint or the like. When the driving force from the PTO shaft of the tractor is input to the input shaft 61, the driving force is transmitted to the power transmission means 64 such as the drive shaft 62 in the main frame 2 and the unillustrated chain 63 in the chain case 3. The rotation is transmitted to the tilling shaft 6 of the rotary working body 5 through the tilling, and the tilling shaft 6 is rotationally driven. Further, a top mast 65 protrudes from the longitudinal center of the main frame 2 of the body 1 toward the front upper side of the body 1, and a top pin 66 is provided at a tip end of the top mast 65. Installed. Also, the main frame 2
A pair of left and right connecting plates 68,
68 is fixed. As shown in FIG. 3, the body 1 has a mounting frame 71 such as a hitch pipe, and the mounting frame 71 is formed in an elongated cylindrical shape having a longitudinal direction in the left-right horizontal direction of the body 1. A pair of left and right lower arms 73, 73 are provided near the center of the mounting frame 71 in the longitudinal direction.
Is fixed. Lower pins 74, 74 are attached to the distal ends of the lower arms 73, 73, respectively. The lower arm 73 of the mounting frame 71 and the connecting plate 68 of the main frame 2 are connected and fixed by connecting means 77 including bolts 75, nuts 76, etc. 71 is fixedly attached to the main frame 2. Note that once the fixed state of the connecting means 77 is released, this mounting frame 71
It is possible to easily attach another main frame having a tilling rotary work body having a different size (not shown). In the vicinity of both ends in the longitudinal direction of the mounting frame 71, the working amount of the tilling rotary work body 5, ie, the depth position in the soil, is kept constant while the tractor wheels are moved along the field scene. Grounding wheels 81, 81 such as a pair of left and right gauge wheels that can run at the rear position are mounted via grounding wheel mounting means 82, 82. Each of the pair of left and right grounding wheels 81, 81 is relatively heavy and is rotatably mounted about a rotation center axis which coincides with the left and right horizontal direction of the body 1, and is mounted on the left and right sides of the body 1. The position in the direction is adjustable, that is, the position in the width direction is adjustable. Also, both ground wheels
Each of 81, 81 is adjustable in height and removable. Here, as shown in FIGS. 2 and 3, each of the grounding wheel mounting means 82 includes a receiving plate member 91 having a U-shaped cross section fixed to the front side of both ends in the longitudinal direction of the mounting frame 71. An elongated rectangular guide plate portion 92 having a longitudinal direction along the mounting frame 71 is formed on a surface of the receiving plate member 91 located on the front side of the body 1. The grounding wheel mounting means 82 has a grounding wheel holder member 94 having a substantially L-shaped cross section. One side of the grounding wheel holder member 94 has a guide plate for a receiving plate member 91. A contact plate portion 95 that contacts the portion 92 is formed. further,
On the other side of the grounding wheel holder member 94, a square tube-shaped arm insertion tube portion 96 that is opened up and down is formed, and a pin insertion hole 97 is formed in the arm insertion tube portion 96 in the left-right direction of the machine body 1. An opening is formed facing the same. The grounding wheel holder member 94 is
A predetermined fixing of the mounting frame 71 via the receiving plate member 91 in a state where the contact plate portion 95 is in contact with the guide plate portion 92 by the fixing means 103 composed of a substantially U-shaped bolt 101, a nut 102 and the like. Fixed in position. On the other hand, a vertically elongated arm 105 having a grounding wheel 81 attached to the lower end thereof is inserted through the arm insertion cylindrical portion 96 of the grounding wheel holder member 94 fixed to the mounting frame 71. A plurality of pin holes 106 are formed in the arm 105 in the left-right direction of the body 1, and each of the pin holes 106 is disposed at equal intervals in the longitudinal direction of the arm 105. Along the line. A stop pin 107 for locking the grounding wheel is inserted into one of the pin insertion holes 106 selected according to the condition of the field.
The arm 105 is fixed to the grounding wheel holder member 94 by being inserted through the pin insertion hole 97 of the arm insertion cylindrical portion 96, and the grounding wheel 81 is held in a state adjusted to a predetermined height position. . A handle 108 is detachably attached to the upper end of the arm 105 to which the grounding wheel 81 is attached at the lower end. Next, the operation of the embodiment will be described. When working with the tilling machine, first, a three-point link mechanism of the tractor, not shown, is connected to a three-point link mechanism of the tractor comprising the top mast 65 of the body 1 and the lower arms 73, 73 via a coupler, not shown. And the input shaft 61 of the body 1 is connected to the PTO shaft of the tractor via a universal joint or the like. Thereafter, the aircraft 1 together with the tractor in the field
Is driven in the traveling direction X, the tilling rotary work body 5 receiving the driving force from the tractor performs tilling and crushing soil work, and the terrain body 20 flattens the field scene. You. In addition, since the movement of the tillable rotary work body 5 into the soil is restricted by the grounding wheel 81, the tillable rotary work body 5 travels at a constant depth in the soil, and the tillable rotary work body 5 The work volume is kept constant. According to the above embodiment, the first stainless steel side plate 35 of the soil adhesion preventing means 31 is fitted into the semi-concave arc-shaped fitting edge 43 into the concave locking portion 13 of the tilling shaft boss 11. The boss for the tilling shaft of the first stainless steel side plate 35 is attached to the chain case 3 or the bracket 4 by screwing the nut 56 into the bolt passage hole 44 and screwing the nut 56 together. The head of the bolt 55 does not protrude from the lower end edge close to 11, and there is no gap between the fitting edge 43 of the first stainless steel side plate 35 and the cultivation shaft boss 11, so that there is room for soil to enter. Since there is no soil, the soil does not adhere to the portion near the cultivation shaft boss 11 to which the soil is most likely to adhere, and it is possible to prevent the soil from increasing from this portion. Therefore, it is possible to appropriately prevent the soil from adhering to the opposing surface of the chain case 3 or the bracket 4, and it is possible to efficiently perform the tilling operation. The fitting edge 43 of the first stainless steel side plate 35 is also provided.
Since the soil does not enter from between the boss 11 and the cultivating shaft boss, the soil can be appropriately prevented from entering between the first stainless steel side plate 35 and the opposing surface of the chain case 3 or the bracket 4. Further, since the first stainless steel side plate 35 is formed of a thin stainless steel plate member, the first stainless steel side plate 35 can be easily designed to be thin while securing a predetermined strength, as compared with the structure made of synthetic resin. , Recessed locking part 13 of boss 11 for tillage shaft
Of the groove width of the cultivation shaft 11 can be prevented from being reduced. A second stainless steel side plate 36 whose surface on the side facing the tillable rotary working body 5 is formed into a smooth surface is attached to each of the opposing surfaces of the pair of left and right cover side plates 16 along this opposing surface. With this configuration, no soil such as slime adheres to the smooth surface of the second stainless steel side plate 36, and the adhesion of soil to the opposing surface of the cover side plate 16 can be appropriately prevented. Further, the second stainless steel side plate 36 of the soil adhesion preventing means 31 is fitted and locked at predetermined edge portions along three different directions in the concave locking portion 18 by the stepped plate body 17.
Since the nut 56 is screwed into the bolt passing hole 50 and the nut 56 is screwed, the nut 56 is attached to the opposing surface of the cover side plate 16 along this opposing surface. In comparison with the configuration using only the fixing member including the nut 55 and the nut 56, it is possible to more effectively prevent soil such as mud from entering between the cover side plate 16 and the second stainless steel side plate 36. Moreover, the second stainless steel side plate 36 is used as the cover side plate.
It can be easily attached to 16 and can be easily assembled. Further, predetermined end edges along three different directions of the second stainless steel side plate 36 are fitted and locked in the corresponding concave locking portions 18 on the inner surface of the cover side plate body 16, thereby forming the second stainless steel side plate 36. (2) The stainless steel side plate 36 can be properly attached to the facing surface of the cover side plate body 16 in a securely fixed state. Further, the second stainless steel side plate 36 is
Compared to the configuration using only the fixing member consisting of the nut 55 and the nut 56, the gap generated between both end surfaces in the longitudinal direction of the ground preparation body 20 and the inner surface of the cover side plate body 16 can be reduced, and the scattering of soil is effectively performed. Thus, the cover side plate 16 and the cover upper plate 21 can reliably prevent the scattering of soil. Further, since the second stainless steel side plate 36 is formed of a thin stainless steel plate member, it can be easily designed to be thin while securing a predetermined strength, as compared with a structure made of synthetic resin. In the above-described embodiment, predetermined end portions of the second stainless steel side plate 36 along three different directions are fitted and locked in the corresponding concave locking portions 18 on the inner surface of the cover side plate 16. Although described as a configuration, for example, although not shown, a configuration in which predetermined edge portions along two different directions are fitted and locked in the corresponding concave locking portions may be employed. Further, in the above embodiment, the concave locking portion 13 is described as a configuration in which it is annularly concave along the circumferential direction on the outer peripheral surface of the base end of the tilling shaft boss 11, but, for example, it is not shown. However, the configuration may be such that only the upper part of the outer peripheral surface of the base end of the tilling shaft boss 11 is recessed in a semi-arc shape. Further, in any of the embodiments,
Although the tilling work machine having the rotatable tilling rotary work body 5 has been described, the present invention can also be applied to an agricultural work machine having other types of soil working bodies. Applicable to agricultural work machines with a body. [0053] According to the invention of 請 Motomeko 1, wherein, according to the present invention, tilling low
Since the soil-adhesion-preventing plate whose surface facing the tall work body is formed in a smooth surface shape is attached to each opposing surface of both cover side plates along this opposing surface, the soil adhesion is prevented. Soil does not adhere to the smooth surface of the prevention plate, and the adhesion of soil to the opposing surface of the cover side plate can be appropriately prevented. Also,
Sat attachment prevention plate body, fitted locking between the stepped plate body and the cover plate body for engaging an elongated shape a predetermined edge portion of the soil attachment prevention plate member in a substantially L-shaped By doing so, it is attached to the opposing surface of the cover side plate along this opposing surface,
Compared to a configuration that uses only bolts and nuts without a stepped plate, etc., not only is it difficult for soil to enter between the cover side plate and the soil adhesion prevention plate, but also the soil adhesion prevention plate You can easily attach your body,
Good assemblability can be achieved. Furthermore, compared to a configuration in which the soil attachment preventing plate is attached using only the fixing device composed of bolts and nuts, the gap generated between the terrain body and the cover side plate can be reduced, thereby effectively scattering the soil. Can be prevented. Also, replace the soil adhesion prevention plate with a thin stainless steel plate.
Because it was formed of a material, compared to the synthetic resin configuration,
It can be easily designed to be thin while ensuring the strength of.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view cross-sectional view, partially omitted, showing an embodiment of an agricultural working machine of the present invention. FIG. 2 is a side view of the agricultural working machine. FIG. 3 is a plan view of the agricultural working machine. FIG. 4 is a side view of the agricultural work machine as viewed from the direction of arrow A in FIG. FIG. 5 is a diagram showing an inner surface side of a cover side plate of the agricultural working machine. FIG. 6 is a front view of a cover side plate of the agricultural working machine. FIG. 7 is a cross-sectional view showing a state where the cover side plate of the agricultural work machine is attached to a chain case or a bracket. [Reference Numerals] 3 as chain case 4 bracket 5 tillage耘rotary working member 16 covering the side plate member 17 stepped plate 18 recessed retaining portion 20 leveling member 36 soil adhesion prevention plate body as opposed frame as opposed frame 2nd stainless steel side plate

Claims (1)

(57) [Claims 1] A pair of opposing frames which are located in a state of being spaced apart from each other and provided rotatably between these two opposing frames, and rotate with respect to soil on a field by rotation. A rotary tilling work body for tilling work, provided at both sides of the rotary cultivating work body so as to be spaced apart from each other and connected to a rear end of the facing frame.
A cover side plate body that is fixed and forms a pair for preventing the scattering of soil based on the rotation of the tillable rotary work body, and is rotatable about a base end side such that a tip side moves up and down to a rear position of the tillage rotary work body. And a terrain body for leveling a field scene flatly, and attached to an edge of a position facing the terrain body on each of opposing surfaces of the two cover side plate bodies along the edge, and the cover side plate body Across the bottom and rear edges of the
A stepped plate body for engaging an elongated shape in cross-section substantially L-shape located I, before SL on the opposing surface of each of the two covers side plates thereof is mounted along the opposing surface, said plow rotary working member A soil-adhesion preventing plate whose opposite surface is formed in a smooth surface shape , wherein the soil-adhesion preventing plate is a thin stainless steel plate member.
The lower edge and the rear edge are formed with the locking step.
State fitted and locked between the attached plate body and the cover side plate body
Agricultural machine, characterized in that it has become.