JP5787155B2 - Rotary mowing blade mounting device - Google Patents
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- JP5787155B2 JP5787155B2 JP2011202415A JP2011202415A JP5787155B2 JP 5787155 B2 JP5787155 B2 JP 5787155B2 JP 2011202415 A JP2011202415 A JP 2011202415A JP 2011202415 A JP2011202415 A JP 2011202415A JP 5787155 B2 JP5787155 B2 JP 5787155B2
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- 244000025254 Cannabis sativa Species 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
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- 238000010298 pulverizing process Methods 0.000 description 1
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Description
本発明は、草等を刈り払う作業と、細かく粉砕する作業とができる自走式草刈り機の回転式草刈り刃取付け装置に関するものである。 The present invention relates to a rotary mowing blade mounting device for a self-propelled mower capable of cutting grass and the like and finely pulverizing it.
草刈り作業において、自走式の機体に左右を軸支され、且つ地面と平行に配置されたローターへ複数本装着された草刈り刃によって、草等を刈り払うと同時に細かく粉砕する自走式の草刈り機(特許文献1)が知られている。 In mowing work, a self-propelled mowing machine that cuts grass etc. at the same time with a mowing blade that is pivotally supported by a self-propelled aircraft and mounted on a rotor arranged in parallel with the ground. (Patent Document 1) is known.
従来技術の草刈り刃取付け方法は、左右を軸支された円筒形のパイプに、端部に貫通孔を有するU字形状のホルダーが、複数個溶着されているローターの前記ホルダーの一つ一つに草刈り刃二枚が背中合わせで重ねられ、ローターピンを利用し前記ホルダーの間に前記草刈り刃を装着し割りピンで脱落防止の措置を行う技術や、ボルトを通してナットで螺合する措置、更には緊定クリップを用いて脱落を防止する(特許文献2)といった技術が紹介されている。 The conventional mowing blade mounting method is such that each of the above-mentioned holders of the rotor is welded with a plurality of U-shaped holders having through-holes at the ends on a cylindrical pipe pivotally supported on the left and right. Two cutting blades are stacked back to back, using a rotor pin to attach the grass cutting blade between the holders, and using a split pin to prevent falling off, a screw threading with a nut, A technique has been introduced in which a clip is used to prevent dropping (Patent Document 2).
草刈り機械にて長時間の草刈り作業を行えば、長時間の使用により草刈り刃が摩耗し、切れ味が落ち作業性が著しく低下する。 If the mowing operation is performed for a long time with the mowing machine, the mowing blade will be worn away due to the long-term use, and the cutting performance will be lowered and the workability will be significantly reduced.
前記草刈り刃が装着されたローターは、同じ回転方向で回転している為に、回転方向側の前記草刈り刃の刃部が摩耗し、使用するに従い切れ味が徐々に低下し、草刈り刃の交換が必要となるが、前記草刈り刃は両刃となっている為に左右を反転させることで、使用されていない刃側で再度草刈り作業を行うことが可能となっている。 Since the rotor equipped with the mowing blade rotates in the same rotational direction, the blade portion of the mowing blade on the rotational direction side wears, the sharpness gradually decreases with use, and the mowing blade can be replaced. Although it is necessary, since the mowing blade is a double-edged blade, the mowing operation can be performed again on the unused blade side by reversing the left and right sides.
切れ味の低下により、一つのホルダーに装着されている前記草刈り刃を左右反転させ、新たな刃で再度草刈り作業を行っていくことになるが、前記ローターには複数のホルダーが溶着されている為に、脱落防止措置の曲げられた割りピンを伸ばす作業や、ボルト及びナットを外す作業が大変に煩わしい。 Due to the reduction in sharpness, the mowing blade mounted on one holder is reversed left and right, and the mowing operation is performed again with a new blade. However, because a plurality of holders are welded to the rotor. Furthermore, the work of extending the bent split pin and the work of removing the bolts and nuts, which are measures for preventing the dropout, are very troublesome.
取付け方法の考案自体はされているが、現在でも主流はボルト及びナットによる螺合にて行われているのが現状である。 Although the method of mounting itself has been devised, the mainstream is still being screwed with bolts and nuts at present.
本発明はこのような状況を鑑み、簡素な構造でありながらも草刈り刃の左右の反転作業に要する時間を短縮した、草刈り刃取付け装置を提供するものである。 In view of such a situation, the present invention provides a mowing blade attachment device that has a simple structure but shortens the time required for reversing the mowing blade from side to side.
両端部を軸支され且つ地面と平行に配置された円筒形のパイプに、貫通孔a(24)を有する円筒形のハウジング(21)が、前記円筒形のパイプの円周上に対しハウジング(21)の軸心が垂直となるよう複数個溶着されたローター(19)のハウジング(21)内部に、スプリング(25)材を装入した状態で、常にハウジング(21)内部から加圧された状態になるように円形のボス(23)を嵌め込む。 A cylindrical housing (21) having a through hole a (24) in a cylindrical pipe that is pivotally supported at both ends and arranged parallel to the ground is provided with a housing (on the circumference of the cylindrical pipe). 21) With the spring (25) material being inserted into the housing (21) of the rotor (19) welded in such a manner that the axis of 21) is vertical, the inside of the housing (21) was always pressurized. A circular boss (23) is fitted so as to be in a state.
ボス(23)のハウジング(21)内部に嵌め込まれる部位には、ハウジング(21)内に係止される為に必要なピン(22)を通す貫通孔b(26)を有し、ハウジング(21)の貫通孔a(24)からピン(22)を差込み、ボス(23)の貫通孔b(26)へ差し通す。 A portion of the boss (23) to be fitted inside the housing (21) has a through hole b (26) through which a pin (22) necessary to be locked in the housing (21) is passed. The pin (22) is inserted from the through hole a (24) of the boss and is inserted into the through hole b (26) of the boss (23).
ハウジング(21)内部は段状に構成されており、貫通孔a(24)によってハウジング(21)内部の段部に現れる半円状の凹み(36)ができる。ボス(23)は、ハウジング(21)に対しスプリング(25)材により加圧されており、矢印B(33)方向に直動可能であり更にハウジング(21)の軸心に対し回動可能にピン(22)によって係止され半円状の凹み(36)にピンが嵌まることで位置が決定する。 The inside of the housing (21) is formed in a step shape, and a semicircular recess (36) that appears at the step portion inside the housing (21) is formed by the through hole a (24). The boss (23) is pressed against the housing (21) by a spring (25) material, can move directly in the direction of arrow B (33), and can rotate with respect to the axis of the housing (21). The position is determined by the pin being fitted into the semicircular recess (36) locked by the pin (22).
更にボス(23)のハウジング(21)内部への装着側とは反対に位置する側は、端部に貫通孔(32)を有する二枚のプレートをボス(23)に突設したホルダーB(31)として構成され、背中合せにした二枚の草刈り刃(15)を揺動可能にボルト(16)及びナット(17)を用いてホルダーB(31)に螺合することができる。 Further, on the side of the boss (23) opposite to the mounting side inside the housing (21), the holder B (two plates having a through hole (32) at the end projecting from the boss (23) is provided. 31), and the two mowing blades (15) back-to-back can be screwed to the holder B (31) using a bolt (16) and a nut (17) in a swingable manner.
数個所に溶着されている他のハウジング(21)にも、ハウジング(21)内部にスプリング(25)材を装入した状態で同様にボス(23)を嵌め込みピン(22)により係止し、草刈り刃(15)をボルト(16)及びナット(17)を用いてホルダーB(31)に揺動可能に螺合する。 In the other housing (21) welded to several places, the boss (23) is similarly fitted and locked by the pin (22) with the spring (25) material inserted in the housing (21), The mowing blade (15) is threadably engaged with the holder B (31) using a bolt (16) and a nut (17).
本発明は、以上の構成よりなる草刈り刃(15)の摩耗による左右の反転作業を容易に行うことができ、反転作業の煩わしさを解消した草刈り刃取付け装置である。 The present invention is a mowing blade mounting device that can easily perform left and right reversing work due to wear of the mowing blade (15) having the above-described configuration, and eliminates the troublesome work of reversing work.
従来技術の草刈り刃取付け状態は、ホルダーA(18)の貫通孔d(34)に対しピンを差込み割りピンにて脱落防止を行う方法や、ボルト(16)及びナット(17)にて螺合する方法である為、ローター(19)に溶着されているホルダーA(18)全ての草刈り刃(15)を、片側の刃の摩耗後に反転の付替え作業を行うのは大変煩わしい作業となる。 Prior art mowing blades are installed in such a way that a pin is inserted into the through hole d (34) of the holder A (18) to prevent it from falling off, or screwed with a bolt (16) and a nut (17). For this reason, it is very troublesome to perform the reversal replacement work for all the mowing blades (15) welded to the rotor (19) after the blades on one side are worn.
しかし本発明は、前述のように構成したことで、草刈り刃(15)はボルト(16)及びナット(17)にてボス(23)のホルダーB(31)に螺合されてはいるが、ボス(23)はハウジング(21)内において、スプリング(25)材にて加圧されながら直動可能更には回動可能になるようピン(22)にて係止されていることから、ハウジング(21)内にて矢印B(33)方向へ押し込みながら回動すれば、ボス(23)は容易に回転することになる。 However, since the present invention is configured as described above, the mowing blade (15) is screwed to the holder B (31) of the boss (23) with the bolt (16) and the nut (17). In the housing (21), the boss (23) is locked by a pin (22) so that it can be moved directly while being pressed by a spring (25) material, and can be rotated. 21), the boss (23) can be easily rotated by rotating while pushing in the direction of the arrow B (33).
つまり、ボス(23)のホルダーB(31)に対し、ボルト(16)及びナット(17)にて螺合された草刈り刃(15)を容易に反転することが可能になるのである。 That is, the mowing blade (15) screwed with the bolt (16) and the nut (17) with respect to the holder B (31) of the boss (23) can be easily reversed.
円筒形のパイプで構成されるローター(19)に、両端には支持される為の軸(14)と、円周上には貫通孔a(24)を有する円筒形のハウジング(21)を、ハウジング(21)の軸心が円周上に垂直となるよう数箇所溶着する。 A rotor (19) composed of a cylindrical pipe has a shaft (14) to be supported at both ends, and a cylindrical housing (21) having a through hole a (24) on the circumference, Several locations are welded so that the axis of the housing (21) is perpendicular to the circumference.
円筒形のハウジング(21)の内部にスプリング(25)を装入し、更にスプリング(25)を押し込む形で円形のボス(23)を嵌め込む。 A spring (25) is inserted into the cylindrical housing (21), and a circular boss (23) is fitted into the spring (25).
ボス(23)のハウジング(21)内部に嵌め込まれる部位には、貫通孔b(26)を有し、ハウジング(21)への装着側と反対に位置する部位は、端部に貫通孔c(32)を有する二枚のプレートが一定の間隔を保持した状態でボス(23)に突設されたホルダーB(31)構造となっている。 A portion of the boss (23) that is fitted inside the housing (21) has a through hole b (26), and a portion that is located opposite to the mounting side of the housing (21) has a through hole c ( 32) has a holder B (31) structure projecting from the boss (23) in a state where the two plates having a constant interval are maintained.
ボス(23)をハウジング(21)内部にて、直動可能更には回動可能に係止する為、ピン(22)を用いて、ハウジング(21)の貫通孔a(24)からピン(22)を差し通し、ハウジング(21)の内部でボス(23)の貫通孔b(26)へ差し通す。 In order to lock the boss (23) inside the housing (21) so that it can move linearly and further pivotably, the pin (22) is used to insert the pin (22 ) And is inserted into the through hole b (26) of the boss (23) inside the housing (21).
図3に示すように、ハウジング(21)の内部は段状に構成されており、貫通孔a(24)として空けられた孔の内部に位置する部分は、半円状の凹み(36)として現れ、凹み(36)にピン(22)が収まる形となっている。 As shown in FIG. 3, the inside of the housing (21) is formed in a step shape, and the portion located inside the hole opened as the through hole a (24) is formed as a semicircular recess (36). It appears and the pin (22) fits in the recess (36).
差し通されたピン(22)は、ハウジング(21)内に嵌め込まれているボス(23)のみに差し込まれており、スプリング(25)に加圧された状態で、ハウジング(21)内の凹み(36)に係止されている。 The inserted pin (22) is inserted only into the boss (23) fitted in the housing (21), and is depressed in the housing (21) while being pressed by the spring (25). (36).
ボス(23)の二枚のプレートで構成されているホルダーB(31)には、貫通孔c(32)を有している為、草刈り刃(15)を二枚背中合せにした状態で、揺動可能にボルト(16)及びナット(17)にて螺合することが可能となっている。 The holder B (31) composed of two plates of the boss (23) has a through hole c (32). The bolt (16) and the nut (17) can be screwed together.
以上のように構成したことで、左右を軸支されたローター(19)は、軸(14)に伝達される動力によって図2に示す矢印B(30)方向へ回転し、その回転により草刈り刃(15)が、矢印A(29)方向に起立し、その状態を保持したまま草等を刈り払い細かく粉砕することが可能になる。 With the configuration as described above, the rotor (19) pivotally supported on the left and right is rotated in the direction of the arrow B (30) shown in FIG. 2 by the power transmitted to the shaft (14). (15) stands up in the direction of arrow A (29), and the grass and the like can be cut and finely pulverized while maintaining this state.
本機エンジン(1)からの動力を、プーリA(2)とベルトa(3)を利用し、ミッション(5)に装着してあるプーリB(4)へ伝達させる。 The power from the engine (1) is transmitted to the pulley B (4) attached to the transmission (5) using the pulley A (2) and the belt a (3).
エンジン(1)の動力は、ミッション(5)により変速等が行われ、プーリC(6)とベルトb(8)を利用し、シャフト(7)に装着してあるプーリD(9)へ伝達され、シャフト(7)を回転させる。 The power of the engine (1) is shifted by the mission (5) and transmitted to the pulley D (9) attached to the shaft (7) using the pulley C (6) and the belt b (8). And rotate the shaft (7).
プーリD(9)によりシャフト(7)へ伝達した動力は、シャフト(7)に装着されているプーリD(9)と反対側に装着されているプーリE(10)とベルトc(11)を通じて、ローター(19)と連結しているプーリF(12)へ伝達される。 The power transmitted to the shaft (7) by the pulley D (9) is transmitted through the pulley E (10) and the belt c (11) mounted on the opposite side of the pulley D (9) mounted on the shaft (7). , And transmitted to the pulley F (12) connected to the rotor (19).
連結されているローター(19)の構成は、左右の両端に軸(14)を持つ円筒形のパイプであり、該パイプの円周上には、貫通孔a(24)を有する円筒形のハウジング(21)が、ハウジング(21)の軸心が円周上に対し垂直となるよう複数個所に溶着されており、ハウジング(21)の内部にスプリング(25)を装入した状態でボス(23)が嵌め込まれている。 The rotor (19) connected is a cylindrical pipe having shafts (14) at both left and right ends, and a cylindrical housing having a through hole a (24) on the circumference of the pipe. (21) is welded to a plurality of locations such that the axis of the housing (21) is perpendicular to the circumference, and the boss (23) is inserted with the spring (25) inside the housing (21). ) Is inserted.
ボス(23)のハウジング(21)内部に位置する部位は貫通孔b(26)を有しており、ピン(22)をハウジング(21)の貫通孔a(24)からボス(23)の貫通孔b(26)に差し通すことで、ハウジング(21)内部で係止され、ハウジング(21)内部に装着される側の反対に位置する部位には、端部に貫通孔c(32)を有する二枚のプレートが一定の間隔を保持した状態で突設されたホルダーB(31)となっており、草刈り刃(15)をボルト(16)及びナット(17)により揺動可能に取り付けることが可能となっている。 The part located inside the housing (21) of the boss (23) has a through hole b (26), and the pin (22) passes from the through hole a (24) of the housing (21) to the boss (23). By passing through the hole b (26), it is locked inside the housing (21), and a through hole c (32) is provided at the end of the portion located opposite to the side mounted inside the housing (21). The holder B (31) protrudes in a state where the two plates having a certain interval are held, and the mowing blade (15) is attached so as to be swingable by the bolt (16) and the nut (17). Is possible.
この時、草刈り刃(15)の取付け方法は、草刈り刃(15)の装着後の状態が、揺動可能状態に維持できる方法であれば、どのような脱落防止措置でも構わない。 At this time, the method of attaching the mowing blade (15) may be any fall-off prevention measure as long as the state after the mowing blade (15) is attached can be maintained in a swingable state.
ハウジング(21)内部は段状に構成されており、貫通孔a(24)として空けられた孔の内部は、半円状の凹み(36)として現れ、凹み(36)にピン(22)が収まることで、スプリング(25)により加圧された状態のボス(23)の動きが抑止される構造となっている。 The inside of the housing (21) is formed in a step shape, and the inside of the hole opened as the through hole a (24) appears as a semicircular recess (36), and the pin (22) is formed in the recess (36). As a result, the movement of the boss (23) in a state of being pressurized by the spring (25) is suppressed.
本発明の別の実施形態として図9並びに図10に示すように、円周に一定の深さの溝(37)が切られ且つ貫通孔b(26)を有する円形のボス(23)が円筒形のパイプに溶着されたローター(19)で、スプリング(25)を、貫通孔a(24)を有するハウジング(21)内部に装入し、ハウジング(21)をボス(23)に嵌め込み、ピン(22)にて直動可能且つ回動可能に係止され、ハウジング(21)には、端部に貫通孔c()を持つ二枚のプレートが突設されたホルダー(31)を有し、草刈り刃(15)を揺動可能にボルト(16)及びナット(17)にて螺合されており、ハウジング(21)をスプリング(25)の圧縮方向に押し込み、ボス(23)の溝(37)内を回動でき、貫通孔b(26)の外縁に位置する箇所には、半円状の凹み(36)を有している為、凹み(36)位置にて係止される構造としても構わない。 As another embodiment of the present invention, as shown in FIG. 9 and FIG. 10, a circular boss (23) having a groove (37) of a certain depth in the circumference and having a through hole b (26) is a cylinder. The spring (25) is inserted into the housing (21) having the through hole a (24) by the rotor (19) welded to the pipe of the shape, and the housing (21) is fitted into the boss (23), and the pin The housing (21) has a holder (31) in which two plates having a through-hole c () at the end are projected. The mowing blade (15) is swingably screwed with a bolt (16) and a nut (17), the housing (21) is pushed in the compression direction of the spring (25), and the groove ( 37) A place that can be rotated inside and located at the outer edge of the through hole b (26) Since it has a semicircular recess (36), it may have a structure that is locked at the position of the recess (36).
エンジン(1)の動力を伝達させることで、本発明の構成を実施したローター(19)が回転し、ホルダーB(31)に装着されている草刈り刃(15)が矢印(29)方向に起立した状態になる。 By transmitting the power of the engine (1), the rotor (19) implementing the configuration of the present invention rotates, and the mowing blade (15) mounted on the holder B (31) stands up in the direction of the arrow (29). It will be in the state.
作業回転径(35)内で矢印B(30)方向に回転している草刈り刃(15)は、刃部a(27)が草等に達した時、勢い良く切り込み刈り払う。 The mowing blade (15) rotating in the direction of the arrow B (30) within the working rotation diameter (35) vigorously cuts and mows when the blade a (27) reaches the grass or the like.
長時間の作業を行えば、草刈り刃(15)の刃部a(27)が摩耗し、草を刈り取る能力が著しく低下してしまう為、草刈り刃(15)を反転させ刃部b(28)を回転方向に位置するように付け替える必要がある。 If the work is performed for a long time, the blade a (27) of the mowing blade (15) is worn and the ability to cut the grass is remarkably reduced. Therefore, the mowing blade (15) is inverted and the blade b (28) Needs to be replaced so that it is positioned in the rotational direction.
その際本発明の構成では、図4に示すようにハウジング(21)内のスプリング(25)にて加圧された状態のボス(23)を図5に示す形でローター中心(20)に向かって押し込み、ハウジング(21)内部の凹み(36)高さを超えた状態で回動することが可能となっている為、回動させ草刈り刃(15)を反転させる。 In this case, in the configuration of the present invention, as shown in FIG. 4, the boss (23) pressed by the spring (25) in the housing (21) is directed toward the rotor center (20) in the form shown in FIG. Since it is possible to rotate in a state exceeding the height of the recess (36) inside the housing (21), the mowing blade (15) is inverted by rotating.
そうしたことで、草刈り刃(15)の回転方向側の刃部a(27)が摩耗した場合に反転させ刃部b(28)を回転方向に付け替える反転作業に要する時間を、大幅に改善することができるのである。 As a result, when the blade a (27) on the rotation direction side of the mowing blade (15) is worn, the time required for the reversing work to reverse and replace the blade b (28) in the rotation direction is greatly improved. Can do it.
1 エンジン
2 プーリA
3 ベルトa
4 プーリB
5 ミッション
6 プーリC
7 シャフト
8 ベルトb
9 プーリD
10 プーリE
11 ベルトc
12 プーリF
13 ローターカバー
14 軸
15 草刈り刃
16 ボルト
17 ナット
18 ホルダーA
19 ローター
20 ローター中心
21 ハウジング
22 ピン
23 ボス
24 貫通孔a
25 スプリング
26 貫通孔b
27 刃部a
28 刃部b
29 矢印A
30 矢印B
31 ホルダーB
32 貫通孔c
33 矢印C
34 貫通孔d
35 作業回転径
36 凹み
37 溝
1 Engine 2 Pulley A
3 Belt a
4 Pulley B
5 Mission 6 Pulley C
7 Shaft 8 Belt b
9 Pulley D
10 Pulley E
11 Belt c
12 Pulley F
13 Rotor cover 14 Shaft 15 Mowing blade 16 Bolt 17 Nut 18 Holder A
19 Rotor 20 Rotor center 21 Housing 22 Pin 23 Boss 24 Through hole a
25 Spring 26 Through hole b
27 Blade a
28 Blade b
29 Arrow A
30 Arrow B
31 Holder B
32 Through hole c
33 Arrow C
34 Through-hole d
35 Working rotational diameter 36 Recess 37 Groove
Claims (1)
A cylindrical housing having a through-hole in a cylindrical pipe pivotally supported at both ends and arranged parallel to the ground has an axis of the housing perpendicular to the circumference of the cylindrical pipe. A circular boss is fitted into the housing so that the spring material is always pressed from the inside of the housing with the spring material inserted into the housing. The housing of the boss is locked by a pin in a semicircular recess in a stepped portion inside the housing so as to be movable and rotatable relative to the axis of the housing. The side located opposite to the mounting side is a mowing blade in which two plates having through-holes at the end project from the boss at a predetermined interval, and a mowing blade can be attached to be swingable. Machine mowing blade mounting device.
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JP2011202415A JP5787155B2 (en) | 2011-09-15 | 2011-09-15 | Rotary mowing blade mounting device |
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JP2011202415A JP5787155B2 (en) | 2011-09-15 | 2011-09-15 | Rotary mowing blade mounting device |
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JP2013063027A JP2013063027A (en) | 2013-04-11 |
JP5787155B2 true JP5787155B2 (en) | 2015-09-30 |
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US9907226B2 (en) * | 2013-02-15 | 2018-03-06 | Hrm Enterprises, Inc. | Cross flow horizontal rotary lawn mower with replaceable blade cartridges |
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