JPH054803U - Cover device for rotary tiller - Google Patents

Abstract

(57) [Summary] [Structure] Front and rear engaging portions 27Af and 27Ag protruding outward are formed on the outer surface of the elastic cover 14, and side engaging portions 27Al are formed on the left and right side portions, respectively. The front and rear engaging portions 27 are formed on the inner surface of the rear plate cover.
Front and rear engaging portions 27Bf and 27Bg engaging with Af and 27Ag are formed, and side engaging portions 27Bl engaging with the side engaging portion 27Al are formed on left and right side portions, respectively. The side locking portion 27Bl is formed by a member having a substantially S-shaped cross section with a front-rear length exceeding the dogleg bent portion of the rear plate cover, and is engaged with the side engaging portion 27Al at a portion corresponding to the dogleg bent portion. A notch 39 that does not fit is formed. [Effect] The side locking portion 27Bl can be easily bent and formed along the dogleg bent portion of the rear plate cover, and can be formed in a front-rear length that exceeds the dogleg bent portion. The side locking portion 27Bl is also longer than the long side engaging portion 27Al,
The processing of itself can be simplified, and the attachment to the rear plate cover 12 can be easily performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cover device for a rotary cultivator having an elastic cover on the side of the tilling part.

[0002]

[Prior Art]

 As a conventional technique of this type, there is one disclosed in Japanese Utility Model Laid-Open No. 52-136007, in which an elastic cover is arranged on the inner surface side of an iron plate cover fixed to the rotary machine frame so as to cover the upper part of the tillage part, The elastic cover is bolted to the iron plate cover at the front and rear and in the middle, and is made to slacken between fixed positions, and the slackened portion absorbs the impact of scattered soil and prevents soil adhesion.

[0003]

[Problems to be solved by the device]

 The elastic cover of the prior art described above has a through hole for bolting to the iron plate cover, and cracks may occur from the through hole. Cannot be attached to the iron plate cover, and the fixed part is in direct contact with the iron plate cover, and if a stone or the like collides, the slack part may contact the iron plate cover, giving an impact to the iron plate cover, or the stone and the iron plate cover. Sometimes, the elastic cover may be crushed by, and it has to be fixed with a large number of bolts, which makes attaching and detaching the elastic cover extremely troublesome.

Therefore, an outwardly projecting engagement portion is formed on the outer surface of the elastic cover, and a locking portion that engages with the engagement portion is formed on the inner surfaces of the main plate cover and the rear plate cover to engage the attachment. It is considered that the engagement is performed between the engaging portion and the engaging portion, and the gap is formed by the protrusion of the engaging portion. However, if the above-mentioned protruding engagement part is provided, mud may infiltrate from the side part into the gap between the elastic cover and the rear plate cover and may accumulate mud during super wet field scraping work. , Muddy soil accumulates inside the cover, which increases the weight, and the elastic cover may swell and come into contact with the plowing claw, resulting in a damage accident.

This problem can be solved if the side engaging portion of the elastic cover is lengthened in the front-rear direction so as to prevent the infiltration of mud from the side portion. When the stop is also lengthened in the front-rear direction, the side locking part is formed by a member that is bent in an S-shape in cross section, and if the rear plate cover is bent in a V shape when viewed from the side, that Another problem is that it is difficult to machine into a long shape that exceeds the bending part, and it is necessary to divide it into front and rear parts, and if it is formed with multiple members like this, the number of mounting points increases and it is troublesome. Occurs.

An object of the present invention is to form a notch in a portion corresponding to a dogleg-shaped bent portion of a rear plate cover in a side locking portion formed by a member bent in an S-shape in cross section. As a result, it is possible to provide a cover device for a rotary cultivator, which can be formed into a long-shaped member that exceeds the bent portion of the rear plate cover in a side view and can be easily engaged with the side engaging portion. is there.

[0007]

[Means for Solving the Problems]

 The first concrete configuration for solving the problems in the present invention is to attach a rear plate cover 12 in a side view that covers the rear of the tilling part 8 to the rotary machine frame 5 and to the inner surface of the rear plate cover 12. A cover device for a rotary cultivator in which an elastic cover 14 is placed along a gap C, and the front and rear parts and the left right part of the elastic cover 14 are attached to a rear plate cover 12, and the outer surface of the elastic cover 14 is a front and rear part. Front and rear engaging portions 27Af and 27Ag protruding outward, and side engaging portions 27Al on the left and right sides, respectively, and engage with the front and rear engaging portions 27Af and 27Ag on the inner surface of the rear plate cover 12. The front and rear locking portions 27Bf and 27Bg are formed with side locking portions 27Bl that engage with the side engaging portions 27Al on the left and right side portions, respectively, and these side locking portions 27Bl are doglegged in the rear plate cover 12. A side engaging portion 27Al is formed at a portion corresponding to the dogleg bent portion 38, which is formed by a member having a substantially S-shaped cross section having a front-rear length exceeding the portion 38. That is, the notch 39 that does not engage is formed.

[0008]

[Action]

 The side locking portions 27Bl provided on the left and right side portions of the inner surface of the rear plate cover 12 are formed by a material having a substantially S-shaped cross section, but a portion corresponding to the dogleg-shaped bent portion 38 of the rear plate cover 12. Since the notch 39 that does not engage with the side engaging portion 27Al is formed in the rear side, it is possible to easily bend the rear cover 12 along the dogleg bending portion 38 of the rear plate cover 12. It is formed in a front-rear length that exceeds the bent portion 38.

Therefore, the side engaging portion 27Bl is longer than the side engaging portion 27Al that is long in the front-rear direction, so that the processing of the side engaging portion 27Bl itself is simple and the attachment to the rear plate cover 12 is also easy.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 6, reference numeral 1 is a tractor-mounted rotary cultivator, in which left and right support arms 3 project from a central gear case 2, and transmission cases 4 and side frames 9 (shown in FIG. 8) are provided at the outer ends of each support arm 3. A rotary machine frame 5 is formed by fixing and, and a pawl shaft 6 is rotatably supported on the lower part of the transmission case 4 and the side frame about the horizontal axis, and a large number of plowing pawls 7 are attached to the pawl shaft 6. It forms a tilling part 8.

A cover device 10 for covering the tilling part 8 is attached to the rotary machine frame 5, and the cover device 10 includes a main plate cover 11 for covering an upper part of the tilling part 8, a rear plate cover 12 for covering a rear part, and a front part. A front cover 13 for covering the front and rear, front and rear side plate covers (not shown) for covering the left and right sides, and an elastic cover 14 arranged on the inner surface side of the main and rear plate covers 11, 12 (on the side of the tilling part 8). There is.

1 to 6, reference numeral 15 denotes a plate cover including a main plate cover 11 and a rear plate cover 12, which is formed of an iron plate or a reinforced plastic plate, and the main plate cover 11 includes upper and lower walls 11a and 11b, and left and right walls. The side wall 11c and the front and rear beams 11d and 11e are formed, and the left and right side walls 11c are fixed to the transmission case 4 and the side frame 9. The main plate cover 11 is gradually thinned from the front part to the middle part, and is formed so that the diameter of the tilling part 8 can be increased.

The rear plate cover 12 is formed in a V shape when viewed from the side, and the reinforcing wall 12b is fixed to the front upper part of the main wall 12a, and the plural reinforcing ribs 12c are fixed to the outer surface in the plowing width direction (horizontal direction). The rear part of the main plate cover 11 and the front upper part of the rear plate cover 12 are connected to each other via a pivot 16 so that the rear lower part of the rear plate cover 12 can be moved up and down. A triangular notch 18 for arranging the cultivator 41 is formed in the center of the rear lower part of the rear plate cover 12, and when the cultivator is not used, a detachable triangular plate 19 is attached to close it. Further, rear gauge wheel escape notches 20 are formed on the left and right sides of the rear lower portion and are closed by an auxiliary plate 21 when the rear gauge wheel is not used.

A support arm 23 projects rearward from the left and right support arms 3 via a bracket 22, and a leveling pressure adjusting means 24 is provided between the rear end of the support arm 23 and the reinforcing rib 12c of the rear plate cover 12. Is provided. The elastic cover 14 is mainly made of rubber or elastic synthetic resin and has a sheet shape. As shown in FIG. 3, the elastic cover 14 is made of synthetic resin such as polyamide resin or natural fiber in the middle of the sheet thickness direction. The hooded fabric is sandwiched, and the elastic layers 14a, 14a and the reinforcing layer 14b have a three-layer structure. Elastic deformation is easy, but expansion and contraction does not occur so much and durability is provided. There is. A large number of engaging portions A are formed on the outer surface of the elastic cover 14. The engagement portion A is made of a material having the same quality as the elastic layer 14a and high hardness.

The elastic cover 14 has a main plate cover corresponding portion 26 facing the inner surface of the main plate cover 11 and a rear plate corresponding portion 27 facing the inner surface of the rear plate cover 12, and the rear plate cover 12 is In order to swing upward, it is overlapped at the portion facing the pivot portion 16. The engaging portion 26A provided on the outer surface of the main plate cover corresponding portion 26 in an outwardly projecting shape includes front and rear engaging portions 26Af and 26Ag, at least one or more midway engaging portions 26Ah, and left and right side ribs 26Ak. Have. The front and rear engaging portions 26Af, 26Ag are formed to have a length that extends over substantially the entire plowing width, and the engaging groove af of the front engaging portion 26Af is the front and rear opposite to the engaging grooves ag, ah of the other engaging portions 26Ag, 26Ah. It is opened in the direction and faces each other. The midway engaging portion 26Ah is formed shorter than the front tilling width.

The side ribs 26Ak are formed on the left and right sides of the main plate cover corresponding portion 26 as ridges having substantially the same height as the other engaging portions 26A. The left and right ends of the rear engagement portion 26Ag are formed continuously with the rear ends of the side ribs 26 Ak, so that the mud does not enter from the outside from the rear portion to the side portion of the elastic cover 14. The front engaging portion 26Af is provided with a notch-shaped opening 35 at least at one of the left and right side portions or the central portion. This opening 35 is for discharging muddy water into the gap C between the elastic cover 14 and the main plate cover 11 if it enters. Even if the front engaging portion 26Af forms the opening 35, the front engaging portion 26Af is connected by the lower thin portion 36 and is attached to the seat portion as a single full length. The thin portion 36 may be formed above the opening 35.

Locking portions 26 Bf, 26 Bg, 26 Bh are formed on the inner surface of the main plate cover 11 corresponding to the engaging portions 26 Af, 26 Ag, 26 Ah. The front engaging portion 26Bf is formed by overlapping the front edges of the upper and lower walls 11a and 11b, and the front engaging portion 26Af is engaged from the front. The rear locking portion 26 Bg and the intermediate locking portion 26 Bh are formed by welding or adhering the S-shaped plate material to the main plate cover 11, and the short ones are provided one by one at intervals in the tilling width direction. The engaging portions 26Ag and 26Ah corresponding to them are engaged from the rear side.

A front cover 13 made of an elastic material is attached to the front portion of the upper wall 11a of the main plate cover 11 via a retaining plate 29 and bolts 30, and the front engaging portion 26Af together with the front cover 13 is attached to the main plate cover 11. It is sandwiched between the front edge and the retaining plate 29. The chevron-shaped member located on the rear side of the midway engaging portion 26Ah forms a retaining portion 31 fixed to the main plate cover 11 and prevents the engaging portion 26A from being easily disengaged from the locking portion 26B. ..

The elastic cover 14 has engaging portions 27Af, 27Ag, and 27Ah protruding outward on the outer surface of the rear plate cover corresponding portion 27 at the front and rear portions (more accurately, the front upper portion and the rear lower portion) and the middle portion. The front engaging portion 27Af is formed to have a length that extends over substantially the entire plowing width, and the rear engaging portion 27Ag and the midway engaging portion 27Ah are short in the plowing width direction and are spaced in the plowing width direction. There are several of them.

Locking portions 27Bf, 27Bg, 27Bh and retaining portions 31 are formed on the inner surface of the rear plate cover 12, corresponding to the engaging portions 27Af, 27Ag, 27Ah. Further, on the left and right side portions of the outer surface of the rear plate cover corresponding portion 27, side engaging portions 27Al that are continuous in the front and rear and in the middle are formed, and notch engaging portions 27Am are also formed on the side of the triangular notch portion 18. Correspondingly, the rear plate cover 12 is formed with a side locking portion 27Bl and a notch locking portion 27Bm. The rear plate cover corresponding portion 27 is engaged with the locking portion 27B from the rear except the side engaging portion 27Al, and the side engaging portion 27Al is engaged with the side locking portion 27Bl from the left and right outer sides. ..

The left and right side locking portions 27Bl are formed of a substantially S-shaped member in the same manner as the other locking portions 27B, and are welded to the standing wall 12a of the rear plate cover 12 as shown in FIGS. A welded portion a, a hooked portion b that hooks on the side engaging portion 27Al, and a connecting portion c that connects them. The member having a substantially S-shaped cross section has a front-rear length exceeding the dogleg bent portion 38 of the rear plate cover 12, and a notch 39 is formed at a portion corresponding to the dogleg bent portion 38. Therefore, the hook portion b is missing. That is, the cutout portion 39 is a portion that does not engage with the side engaging portion 27Al. Reference numeral 40 denotes a relief portion formed by notching the welded portion a, which is provided at the lower end of the reinforcing wall 12b to prevent polymerization.

Due to the cutout portion 39, the side locking portion 27Bl has a shape in which the front and rear substantially S-shaped sections are connected only by the thin plate-shaped welded portion a, and can be easily bent into a V shape in a side view. And can be fixed to the rear plate cover 12 as an integrated body. Therefore, the member having a substantially S-shaped cross section can be easily processed and attached, and the side engaging portion 27Al can be engaged very easily.

Since the left and right engaging portions 27Al are bilaterally symmetric, when a member having a substantially S-shaped cross section is manufactured from a flat plate, it is possible to punch it in the same mold and bend it upside down to make it different Can be formed, and the mold can be commonly used. Since the elastic cover 14 has the engaging portion A that protrudes between the elastic cover 14 and the plate cover 15, the gap C is formed by the substantially protruding amount of the engaging portion A, and in order to form the gap C, the elastic cover 14 is elastic. Since it is not necessary to slacken the cover 14, the side of the elastic cover 14 facing the cultivated part 8 is polygonal, but can be tensioned, and its surface is substantially along the cultivated part 8 without protrusions. It has a smooth surface, and the debris blown off from the tilling claw 7 flows smoothly, preventing the generation of adhering soil due to slip resistance.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and various modifications can be made. For example, in the elastic cover 14, the main plate cover corresponding portion 26 and the rear plate cover corresponding portion 27 are integrally formed, that is, the front end to the rear end of the plate cover 15 are integrally formed, but they may be formed separately. The main plate cover 11 and the rear plate cover 12 may be formed of a single plate that is connected. Further, the side locking portion 27B1 has the welded portion a and the engaging portion b formed in the same width, and the cutout portion 39 and the relief portion 44 are formed in the same distance from the front and rear ends and in the same shape, so that the left and right parts are the same. May be used.

The triangular plate 19 that closes the triangular notch 18 when the cultivator 41 is not used has an engaging portion 43 (shown in FIG. 1) on its inner surface, and has a similar elastic cover as shown in FIG. 42 can be attached. The elastic cover 42 is flat on the side of the cultivating part 8 and has a locking part 44 for hooking on the triangular plate 19 side, and a cutout part 45 is formed in the rear lower part of the locking part 44, and the elastic cover 42 is provided. The gap between the triangular plate 19 and the triangular plate 19 is opened rearward and downward so that the infiltrated mud can be removed.

8 to 10, in the side frame 9, the upper part of the flat plate-shaped main body 47 is fixed to the end face plate 50 of the support arm 3 by the bolt fasteners 49, and the front and rear parts of the main body 47 are curved outwards. A rib 48 protruding in the vertical direction is formed to extend vertically from the upper portion to the lower portion. The rib 48 is projected sufficiently higher than the height of the bolt fastener 49.

Reference numeral 51 denotes an outer cover, which covers the upper surface, front-back surface and side surface of the main body 47 including the ribs 48, the lower part of which is fastened together with the end face plate 50 by the lowest bolt fastener 49 and the upper part of which is fixed. It is attached by a top bolt fastener 49 via a stop plate 52. In FIGS. 6 and 11 to 13, the soil fertilizer 41 is attached to a support frame 54 which also serves as a rear gauge wheel and the like, and the support frame 54 is projected rearward from the rotary machine frame 5 and has a height outside the drawing. The height adjustment mechanism supports the rotary machine frame 5 so that its height can be adjusted.

The support frame 54 has a connecting tool 56 welded to the rear ends of a pair of left and right front and rear arms 55 made of a round pipe, and a tool bar 57 made of a square pipe orthogonal to the front and rear arms 55 is welded on the connecting tool 56. , A tool 58 with a U-shaped cross-section is welded to the center of the tool bar 57, and the holder 59 of the fertilizer 41 is configured to be fitted to the tool 58 and the pins are inserted through them. There is. Reference numeral 60 is a hole formed in the tool bar 57 and the fixture 58 for penetrating the pin.

The connector 56 has a flat surface whose upper surface is in contact with the toolbar 57, and has a rear end that closes the pipe hole at the rear end of the arm 55. It has a shape that can secure a sufficient welding width, and can also cover the hole at the rear end of the arm 55.

[0030]

[Effect of the device]

 According to the present invention described in detail above, the outer surface of the elastic cover 14 is formed with outwardly projecting front and rear engaging portions 27Af and 27Ag, and left and right side engaging portions 27Al, respectively. Front and rear engaging portions 27Bf and 27Bg that engage with the front and rear engaging portions 27Af and 27Ag are formed on the inner surface of the cover 12, and side engaging portions 27Bl that engage with the side engaging portion 27Al are formed on left and right side portions, respectively. The side locking portion 27Bl is formed of a member having a substantially S-shaped cross section having a front-rear length exceeding the dogleg bent portion 38 of the rear plate cover 12, and is provided at a portion corresponding to the dogleg bent portion 38. Since the notch 39 that does not engage with the engaging portion 27Al is formed, the side locking portion 27Bl can be easily bent so as to follow the dogleg bending portion 38 of the rear plate cover 12. Can be formed in a front-rear length that exceeds the dog-legged portion 38, and the side locking portion 27Bl is longer than the side engagement portion 27Al that is long in the front-rear direction, making it easy to process itself. Ri with may easily taken against the rear plate cover 12 with made.

[Brief description of drawings]

FIG. 1 is a plan view of an elastic cover and a locking portion according to an embodiment of the present invention.

FIG. 2 is a plan view of the same side locking portion.

3 is a cross-sectional view taken along line UU of FIG.

FIG. 4 is a sectional view taken along line WW of FIG.

FIG. 5 is a cross-sectional side view of the cover device.

FIG. 6 is a sectional side view of the entire rotary cultivator.

FIG. 7 is a partially cutaway perspective view of a triangular elastic cover.

FIG. 8 is a side view of an upper portion of a side frame.

9 is a sectional view taken along line XX of FIG.

10 is a cross-sectional view taken along line YY of FIG.

FIG. 11 is a plan view of a rear portion of the support frame.

FIG. 12 is a rear view of the support frame.

13 is a sectional view taken along line ZZ of FIG.

[Explanation of symbols]

 1 rotary tiller 5 rotary machine frame 8 tiller 10 cover device 11 main plate cover 12 rear plate cover 14 elastic cover 15 plate cover 26 main plate cover corresponding part 27 rear plate cover corresponding part C gap 27 Al side engaging part 27Bl side locking part 38 V-shaped bent section 39 Notch section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hayako Fujimoto 64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Takashi Sugawara 64, Ishizukitamachi, Sakai City, Osaka Manufacturing Kubota Sakai Co., Ltd. In-house (72) Inventor Mitsuki Hirata 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (1)

[Claims for utility model registration] [Claim 1] A rear plate cover (12) in a side view covering the rear of the tilling part (8) is attached to the rotary machine frame (5), and the rear plate cover (12) is attached. 12) Inside of the elastic cover (1
4) is a cover device for a rotary cultivator in which the front and rear parts and the left and right side parts of the elastic cover (14) are attached to the rear plate cover (12), and the outer surface of the elastic cover (14) is a front and rear part. Front and rear engaging parts (27Af) (27Ag) protruding outward, and side engaging parts (27Al) on the left and right side parts, respectively, and the front and rear engaging parts on the inner surface of the rear plate cover (12). (27Af) (27Ag) front and rear engaging part (27Bf) (27Bg)
Is a side locking part that engages with the side engaging part (27Al) on the left and right side parts.
(27Bl) are respectively formed, and the side locking portions (27Bl) are formed by a cross-section substantially S-shaped member having a front-rear length that exceeds the dogleg bent portion (38) of the rear plate cover (12). Notch part (39) that does not engage with the side engaging part (27Al) at the part corresponding to the U-shaped bent part (38)
A cover device for a rotary cultivator, wherein the cover device is formed.