JPH08828Y2 - Air-cooling device for cutter drive part of hammer cutter - Google Patents
Air-cooling device for cutter drive part of hammer cutterInfo
- Publication number
- JPH08828Y2 JPH08828Y2 JP1989138871U JP13887189U JPH08828Y2 JP H08828 Y2 JPH08828 Y2 JP H08828Y2 JP 1989138871 U JP1989138871 U JP 1989138871U JP 13887189 U JP13887189 U JP 13887189U JP H08828 Y2 JPH08828 Y2 JP H08828Y2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- belt
- shaft
- air
- belt wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Harvester Elements (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は、カッタを高速回転して草を刈るハンマーカ
ッタの改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a hammer cutter that rotates a cutter at high speed to mow grass.
（従来の技術） 従来より、ハンマーカッタは、カッタを取付たカッタ
回転軸にエンジンの動力をベルトで伝動し、高速回転す
る。(Prior Art) Conventionally, a hammer cutter rotates at high speed by transmitting the power of the engine to a cutter rotating shaft to which the cutter is attached by a belt.
（考案が解決しようとする課題） ベルト伝動の場合、カッタが石などに衝突するなどし
て負荷の急激な増大が生じてもこれを緩衝する利点があ
る反面、高速回転する場合はベルトとベルト車との間に
摩擦による発熱が生じる欠点があり、従来のハンマーカ
ッタではこの発熱に関して何ら考慮されていなかったの
で、長時間の作業やベルトの耐久力などについて問題が
あった。(Problems to be solved by the invention) In the case of belt transmission, there is an advantage of buffering a sudden increase in load caused by the cutter colliding with a stone or the like, but on the other hand, when rotating at high speed, the belt and the belt Since there is a drawback that heat is generated due to friction with the vehicle, and the conventional hammer cutter does not consider this heat at all, there is a problem in long-term work and belt durability.
本考案は、これらの問題を解消することを目的とす
る。The present invention aims to solve these problems.
（課題を解決するための手段） かかる目的を達成するために、本考案は以下のように
構成した。(Means for Solving the Problem) In order to achieve this object, the present invention has the following configuration.
すなわち、本考案は、高速回転するカッタ回転軸に取
付けたカッタにより草を刈るハンマーカッタにおいて、
ハンマーカッタのカッタ回転軸の上方にエンジン側の動
力取出軸を配置し、前記動力取出軸に送風羽根を有する
羽根付ベルト車を取付けるとともに前記カッタ回転軸に
ベルトを取付け、これら両ベルト車の間にベルトを掛け
渡し、当該ベルト及び両ベルト車を保護カバーで被覆
し、当該保護カバーには、前記送風羽根に対向する位置
に吸気孔を設けるとともに前記ベルト車に対向する位置
に排気孔を設けてなるものである。That is, the present invention is a hammer cutter for cutting grass by a cutter attached to a cutter rotating shaft that rotates at high speed,
A power take-off shaft on the engine side is arranged above the cutter rotary shaft of the hammer cutter, a vaned belt wheel having blower blades is attached to the power take-off shaft, and a belt is attached to the cutter rotary shaft. The belt and both belt wheels are covered with a protective cover, and the protective cover is provided with an intake hole at a position facing the blower blade and an exhaust hole at a position facing the belt wheel. It will be.
（作用） このように構成する本考案では、草刈り作業中は、送
風羽根が吸気孔から空気を吸い込み、その吸い込んだ空
気は保護カバー内を排気孔に向けて移動し、排気孔から
外部に放出される。(Operation) In the present invention having such a configuration, during the mowing work, the blower vanes suck air through the intake holes, the sucked air moves in the protective cover toward the exhaust holes, and is discharged to the outside through the exhaust holes. To be done.
この送風により、両ベルト車とベルトとの間に高速回
転に伴って生ずる摩擦熱は発散するので、ベルト車やベ
ルトは強制冷却されて異常過熱が防止される。By this air blow, frictional heat generated between the belt pulleys and the belt due to high-speed rotation is radiated, so that the belt pulley and the belt are forcibly cooled to prevent abnormal overheating.
（実施例） 本考案の実施例について、図面を参照して詳細に説明
する。(Example) The Example of this invention is described in detail with reference to drawings.
第１図において、１は後部にエンジン２を搭載すると
ともに左右一対の走行輪３により走行する車台であり、
この車台１にハンドル４を設ける。In FIG. 1, reference numeral 1 denotes an undercarriage in which an engine 2 is mounted on a rear portion and traveling is performed by a pair of left and right traveling wheels 3.
A handle 4 is provided on the chassis 1.
車台１の前方には、左右一対からなる補助車輪を設け
る。A pair of left and right auxiliary wheels are provided in front of the chassis 1.
次に、動力伝達機構について、第２図を参照して説明
する。Next, the power transmission mechanism will be described with reference to FIG.
第２図において、７は草を刈るカッタ８を複数個取付
けたカッタ回転軸であり、これらカッタ８は第１図に示
すようにカバー９で被覆する。10はカッタ回転軸７より
も上方に回転自在に設けた動力取出軸、11はエンジン２
とクラッチ（図示せず）を介して接続する動力取出軸で
ある。In FIG. 2, reference numeral 7 denotes a cutter rotating shaft to which a plurality of cutters 8 for cutting grass are attached, and these cutters 8 are covered with a cover 9 as shown in FIG. 10 is a power take-off shaft rotatably provided above the cutter rotary shaft 7, and 11 is an engine 2
And a power take-off shaft that is connected via a clutch (not shown).
カッタ回転軸７の一端にベルト車12を取付けるととも
に、動力取出軸10の一端に４枚の送風羽根13を有する羽
根付ベルト車14（第３図参照）を取付け、これら両ベル
ト車12、14の間にベルト15を掛け渡す。なお、第３図中
において、16はテンションプーリである。A belt wheel 12 is attached to one end of the cutter rotating shaft 7, and a belt wheel 14 with blades (see FIG. 3) having four blower blades 13 is attached to one end of the power take-off shaft 10. Belt 15 is stretched between. In FIG. 3, 16 is a tension pulley.
また、動力取出軸10の他端には、羽根付ベルト車14と
同様に４枚の送風羽根を有する羽根付ベルト車17を取付
けるとともに、動力取出軸11の一端にベルト車18を取付
け、これら両ベルト車17、18の間にベルト19を掛け渡
す。At the other end of the power takeoff shaft 10, a vane belt wheel 17 having four blowing blades is attached to the other end of the power takeoff shaft 11, and a belt wheel 18 is attached to one end of the power takeoff shaft 11. A belt 19 is stretched between the belt wheels 17 and 18.
ベルト15は、その全体を保護カバー20で被覆し、その
保護カバー20は、送風羽根13に対向する位置に吸気孔21
を設けるとともに、ベルト車12に対向する位置に排気孔
22を設ける。そして、ベルト車14に連動して送風羽根13
が回転すると、送風羽根13が吸気孔21から空気を吸い込
み、その吸い込んだ空気は、保護カバー20内を下方に向
けて移動したのち排気孔22から排出するように構成す
る。The belt 15 is entirely covered with a protective cover 20, and the protective cover 20 is provided with an intake hole 21 at a position facing the blower blade 13.
And an exhaust hole at a position facing the belt wheel 12.
22 is provided. Then, in conjunction with the belt wheel 14, the blower blade 13
When is rotated, the blower blade 13 sucks air from the intake hole 21, and the sucked air moves downward in the protective cover 20 and is then discharged from the exhaust hole 22.
ベルト19もベルト15と同様に保護カバー23で被覆し、
その保護カバー23は、羽根付ベルト車17の送風羽根に対
向する位置に吸気孔を設けるとともに、ベルト車18に対
向する位置に排気孔を設け、吸気孔で吸気された空気が
保護カバー23内を経由して排気孔から排出されるように
構成する。Like the belt 15, the belt 19 is also covered with the protective cover 23,
The protective cover 23 is provided with an intake hole at a position facing the blower blades of the bladed belt wheel 17, and an exhaust hole at a position facing the belt wheel 18, so that the air sucked by the intake hole is in the protective cover 23. It is configured to be discharged from the exhaust hole via.
次にこのように構成する本考案実施例の作用例につい
て説明する。Next, an operation example of the embodiment of the present invention configured as above will be described.
本考案実施例では、草刈り作業中は、エンジン２の回
転が、動力取出軸11、10を経由してカッタ回転軸７に伝
達され、カッタ回転軸７が高速回転してこれに一体のカ
ッタ８により草刈りを行う（第２図参照）。In the embodiment of the present invention, during the mowing work, the rotation of the engine 2 is transmitted to the cutter rotating shaft 7 via the power take-off shafts 11 and 10, and the cutter rotating shaft 7 rotates at a high speed so that the cutter 8 integrated therewith. Mowing is carried out by using (See Fig. 2).
また、動力取出軸10の一端に取付けられた羽根付ベル
ト車14の送風羽根13は、吸気孔21から空気を吸い込み、
その吸い込んだ空気は保護カバー20内を下方の排気孔22
に向けて移動し、排気孔22から外部に排出される。Further, the blower vanes 13 of the vaned belt wheel 14 attached to one end of the power takeoff shaft 10 sucks air from the intake hole 21,
The sucked air passes through the inside of the protective cover 20 and has an exhaust hole 22 below.
And is discharged to the outside through the exhaust hole 22.
さらに、動力取出軸10の他端に取付けた羽根付ベルト
車17の送風羽根は、吸気孔から空気を吸い込み、その吸
い込んだ空気は保護カバー23を後方の排気孔に向けて移
動し、排気孔から外部に排出される。Further, the blower blade of the belt wheel 17 with blades attached to the other end of the power takeoff shaft 10 sucks air from the intake hole, and the sucked air moves the protective cover 23 toward the rear exhaust hole, and the exhaust hole Is discharged from the outside.
従って、上述のように得られる送風により、両ベルト
車12、14とベルト15との間、および両ベルト車17、18と
ベルト19との間に、高速回転に伴って生ずる各摩擦熱は
発散する。Therefore, by the air blow obtained as described above, the frictional heat generated by the high speed rotation is diverged between the belt wheels 12 and 14 and the belt 15 and between the belt wheels 17 and 18 and the belt 19. To do.
（考案の効果） 以上のように本考案では、カッタ回転軸の上方にエン
ジン側の動力取出軸を配置し、その動力取出軸に送風羽
根を有する羽根付ベルト車を取付けるとともにカッタ回
転軸にベルト車を取付け、これら両ベルト車の間にベル
トを掛け渡し、そのベルト及び両ベルト車を保護カバー
で被覆し、その保護カバーには、送風羽根に対向する位
置に吸気孔を設けるとともにベルト車に対向する位置に
排気孔を設けたので、草刈り作業中は、送風羽根が排気
孔の上に設けた吸気孔からゴミが含まれない空気を吸い
込み、その吸い込んだ空気は保護カバー内を排気孔に向
けて移動し、排気孔から外部に向けて放出される。(Effects of the Invention) As described above, in the present invention, the power take-off shaft on the engine side is arranged above the cutter rotary shaft, the belt car with blades having blower blades is attached to the power take-out shaft, and the belt is attached to the cutter rotary shaft. Install a car, hang a belt between these two belt cars, cover the belt and both belt cars with a protective cover, and install an intake hole at a position facing the blower blades in the protective cover and Since the exhaust holes are provided at the opposite positions, during mowing work, the blower blades suck in dust-free air from the intake holes provided above the exhaust holes, and the sucked air flows into the exhaust holes inside the protective cover. It moves toward the outside and is discharged from the exhaust hole to the outside.
従って、本考案では、このようにして得られる強制送
風によって、ベルト車とベルトとの間に高速回転に伴っ
て生ずる摩擦熱を発散できるので、ベルト車やベルトに
強制冷却されて異常過熱が防止され、もって長時間にわ
たる草刈り作業が実現できる上にベルトの耐久性も向上
するという効果が得られる。Therefore, according to the present invention, the forced air thus obtained can dissipate the frictional heat generated between the belt pulley and the belt due to the high speed rotation, so that the belt pulley and the belt are forcibly cooled to prevent abnormal overheating. As a result, it is possible to obtain a long-term mowing operation and also to improve the durability of the belt.
第１図は本考案実施例の全体構成を示す正面図、第２図
は動力伝達機構を示す図、第３図はカッタ駆動部空冷装
置の一例を示す図である。 １…車台、２…エンジン、７…カッタ回転軸、８…カッ
タ、10、11…動力取出軸、12、18…ベルト車、13…送風
羽根、14、17…羽根付ベルト車、15、19…ベルト、20、
23…保護カバー、21…吸気孔、22…排気孔。FIG. 1 is a front view showing the overall configuration of an embodiment of the present invention, FIG. 2 is a view showing a power transmission mechanism, and FIG. 3 is a view showing an example of a cutter driving unit air cooling device. 1 ... Chassis, 2 ... Engine, 7 ... Cutter rotating shaft, 8 ... Cutter, 10, 11 ... Power extraction shaft, 12, 18 ... Belt wheel, 13 ... Blower blades, 14, 17 ... Blade wheel with blades, 15, 19 … Belt, 20,
23 ... Protective cover, 21 ... Intake hole, 22 ... Exhaust hole.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭63−98428（ＪＰ，Ｕ) 実開 昭59−124427（ＪＰ，Ｕ) 実開 昭61−204062（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography SHO 63-98428 (JP, U) ACT 59-124427 (JP, U) ACT 61-602062 (JP, U)
Claims (1)
タにより草を刈るハンマーカッタにおいて、 前記カッタ回転軸の上方にエンジン側の動力取出軸を配
置し、前記動力取出軸に送風羽根を有する羽根付ベルト
車を取付けるとともに前記カッタ回転軸にベルト車を取
付け、これら両ベルト車の間にベルトを掛け渡し、当該
ベルト及び両ベルト車を保護カバーで被覆し、当該保護
カバーには、前記送風羽根に対向する位置に吸気孔を設
けるとともに前記ベルト車に対向する位置に排気孔を設
けてなるカッタ駆動部空冷装置。1. A hammer cutter for cutting grass by a cutter attached to a cutter rotating shaft that rotates at high speed, wherein a power take-off shaft on the engine side is arranged above the cutter rotary shaft, and a blade having blower blades at the power take-off shaft. Attach the attached belt wheel and attach the belt wheel to the cutter rotation shaft, hang the belt between these two belt wheels, and cover the belt and both belt wheels with a protective cover. An air-cooling device for a cutter drive unit, which has an intake hole at a position facing the belt wheel and an exhaust hole at a position facing the belt wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989138871U JPH08828Y2 (en) | 1989-11-30 | 1989-11-30 | Air-cooling device for cutter drive part of hammer cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989138871U JPH08828Y2 (en) | 1989-11-30 | 1989-11-30 | Air-cooling device for cutter drive part of hammer cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0378920U JPH0378920U (en) | 1991-08-12 |
| JPH08828Y2 true JPH08828Y2 (en) | 1996-01-17 |
Family
ID=31685948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989138871U Expired - Lifetime JPH08828Y2 (en) | 1989-11-30 | 1989-11-30 | Air-cooling device for cutter drive part of hammer cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08828Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59124427U (en) * | 1983-02-08 | 1984-08-22 | ニユ−デルタ工業株式会社 | flail mower device |
| JPS6398428U (en) * | 1986-12-16 | 1988-06-25 |
-
1989
- 1989-11-30 JP JP1989138871U patent/JPH08828Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0378920U (en) | 1991-08-12 |
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