JPH073065Y2 - Propeller shaft protective cover device - Google Patents
Propeller shaft protective cover deviceInfo
- Publication number
- JPH073065Y2 JPH073065Y2 JP1989004217U JP421789U JPH073065Y2 JP H073065 Y2 JPH073065 Y2 JP H073065Y2 JP 1989004217 U JP1989004217 U JP 1989004217U JP 421789 U JP421789 U JP 421789U JP H073065 Y2 JPH073065 Y2 JP H073065Y2
- Authority
- JP
- Japan
- Prior art keywords
- propeller shaft
- protective cover
- cover
- chain
- tractor
- 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
- 230000001681 protective effect Effects 0.000 title claims description 29
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- 230000002265 prevention Effects 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Agricultural Machines (AREA)
- Motor Power Transmission Devices (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、例えば農耕用機械や各種作業機械等におい
てトルク伝達手段としてのプロペラシャフト及びその連
結ヨーク回りを覆うプロペラシャフトの保護カバー装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a propeller shaft as a torque transmitting means and a protective cover device for a propeller shaft covering the connecting yoke thereof in a farming machine or various working machines.
農耕用機械や各種作業機械等は、通常トラクタに内燃機
関等の動力源を搭載し、土を掘り返したり溝を築くなど
の作業をする作業機を別個に製作し、該作業機とトラク
タとをプロペラシャフト等で連結し動力を伝達する機構
としてある。このような動力伝達機構においてはトラク
タには動力を取り出す出力軸を、作業機には入力軸を設
けて動力を該作業機に供給しているが前記プロペラシャ
フトの両端部にはこれらの出力軸及び入力軸と連結する
ヨーク及び該ヨークに装着された十字軸からなるジョイ
ント機構が設けられる。また、これらプロペラシャフト
及びジョイント機構部分が露出していると危険なため安
全性を確保する目的で種々のプロペラシャフトの保護カ
バーが開発されている。そしてこれらのプロペラシャフ
トの保護カバーでは内周部に外輪軌道を有するものも多
い。ところで外輪軌道を有するプロペラシャフトの保護
カバーではプロペラシャフトの回転による慣性の作用で
カバーが回転方向に移動することがある。そこで移動防
止を確実に行うための一例として、例えば実公昭52−53
874号の明細書に添付された第１図に示すように、カバ
ーと機械本体に係止部を設け鎖の両端部を連結した回転
防止手段がある。Agricultural machinery and various work machines are usually equipped with a tractor equipped with a power source such as an internal combustion engine, and a work machine for performing work such as digging back soil or digging a groove is manufactured separately, and the work machine and the tractor are combined. It is a mechanism that transmits power by connecting it with a propeller shaft or the like. In such a power transmission mechanism, the tractor is provided with an output shaft for extracting power, and the working machine is provided with an input shaft for supplying power to the working machine, but the output shafts are provided at both ends of the propeller shaft. Further, a joint mechanism including a yoke connected to the input shaft and a cross shaft attached to the yoke is provided. Further, since it is dangerous that the propeller shaft and the joint mechanism portion are exposed, various protective covers for the propeller shaft have been developed for the purpose of ensuring safety. Many of these propeller shaft protective covers have an outer ring raceway on the inner peripheral portion. By the way, in a protective cover for a propeller shaft having an outer ring raceway, the cover may move in the rotational direction due to the action of inertia caused by the rotation of the propeller shaft. Therefore, as an example for surely preventing movement, for example, in Japanese Utility Model Publication No. 52-53.
As shown in FIG. 1 attached to the specification of No. 874, there is a rotation preventing means in which a locking portion is provided on a cover and a machine body and both ends of a chain are connected.
上記する鎖のフックとしてワンタッチ構造の第４図
（１）に示すようなフック31を有する鎖30が使用される
が鎖の引張強度のうち最弱部はこのフック31であって大
体108Kgf程度で第４図（２）のように降伏しへたってし
まう。また、保護カバーとして通常樹脂性カバーが使用
されるが引張強度は100Kgf程度である。従って鎖30より
樹脂性カバーが先に破損する恐れが強い。しかしトラク
タと作業機とを連結するプロペラシャフト及びジョイン
ト機構部分が露出すると危険であるため保護カバーが使
用されるのであるから樹脂保護カバーの方が鎖やフック
より強くなければならず、先に破損するのは好ましいこ
とではない。この考案はかかる課題に鑑みてなされたも
のであり、その目的とするところはプロペラシャフトの
樹脂性保護カバーの破損を防止し安全性を確保すること
にある。A chain 30 having a hook 31 as shown in Fig. 4 (1) of a one-touch structure is used as the chain hook described above. The weakest part of the tensile strength of the chain is this hook 31, which is about 108 Kgf. It surrenders as shown in Fig. 4 (2). A resin cover is usually used as the protective cover, but the tensile strength is about 100 Kgf. Therefore, the resin cover is more likely to be damaged than the chain 30. However, since the protective cover is used because it is dangerous if the propeller shaft connecting the tractor and the working machine and the joint mechanism are exposed, the resin protective cover must be stronger than the chains and hooks, and it will be damaged first. It is not preferable to do so. The present invention has been made in view of the above problems, and an object thereof is to prevent damage to the resin protective cover of the propeller shaft and ensure safety.
即ち、この考案は上記する課題を解決するために、トラ
クタと作業機との間を連結する動力伝達用のプロペラシ
ャフト及びジョイント機構を覆うプロペラシャフトの保
護カバーと、該カバーと機械本体に係止部を設け、鎖の
両端を連結した回転防止手段とを有するプロペラシャフ
トの保護カバー装置おいて、前記回転防止手段に、保護
カバーよりも早期に破損することにより、保護カバーの
破損を防止する破損防止装置を設けたことを特徴とす
る。That is, in order to solve the above-mentioned problems, the present invention provides a propeller shaft protective cover for covering a power transmission propeller shaft and a joint mechanism for coupling between a tractor and a working machine, and a lock for the cover and the machine body. In a protective cover device for a propeller shaft having a portion and a rotation preventing means connecting both ends of a chain, the rotation preventing means is damaged earlier than the protective cover to prevent damage to the protective cover. It is characterized in that a prevention device is provided.
若しトラクタより作業機へ動力伝達中に何らかの拍子に
プロペラシャフトの保護カバーが回転した場合、回転防
止手段に設けた破損防止装置が保護カバーよりも早期に
破損することにより保護カバーの破損が防止される。If the protective cover of the propeller shaft rotates for some reason during power transmission from the tractor to the work machine, the damage prevention device provided in the rotation prevention means will damage the protective cover earlier than the protective cover. To be done.
以下、この考案の具体的実施例について図面を 参照して説明する。 Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.
第１図はこの考案にかかるプロペラシャフトの保護カバ
ーの一部断面図を含む実施例である。この図で、１は作
業機側プロペラシャフト、２はトラクタ側プロペラシャ
フトである。FIG. 1 is an embodiment including a partial sectional view of a protective cover of a propeller shaft according to the present invention. In this figure, 1 is a working machine side propeller shaft, and 2 is a tractor side propeller shaft.
前記プロペラシャフト１は十字軸５を装着したヨーク３
が連結固定され、更に該ヨーク３に装着した十字軸５は
作業機側のスプラインヨーク７に連結固定される。同様
にプロペラシャフト２には十字軸６を装着したヨーク４
が連結固定され、更に該ヨーク４に装着した十字軸６は
トラクタ（図示せず）の動力軸に連結したヨークに連結
介在するカップリングヨーク（図示せず）の一方に連結
固定される。これらのプロペラシャフト１とプロペラシ
ャフト２とは断面が非円形の筒形（実施例では矩形に近
い形状）でありプロペラシャフト２の内径にプロペラシ
ャフト１の外径を嵌脱自在に嵌入させて回転力を伝達す
るようにしてある。The propeller shaft 1 is a yoke 3 on which a cross shaft 5 is mounted.
Is connected and fixed, and the cross shaft 5 mounted on the yoke 3 is connected and fixed to the spline yoke 7 on the working machine side. Similarly, the propeller shaft 2 has a yoke 4 having a cross shaft 6 attached thereto.
The cross shaft 6 mounted on the yoke 4 is connected and fixed to one of coupling yokes (not shown) which are connected to the yoke connected to the power shaft of the tractor (not shown). The propeller shaft 1 and the propeller shaft 2 have a tubular shape with a non-circular cross section (a shape close to a rectangle in the embodiment), and the outer diameter of the propeller shaft 1 is removably fitted into the propeller shaft 2 to rotate. It is designed to transmit power.
更に、前記ヨーク３には転動体９用の軌道3aとなる凹溝
を周設し、前記ヨーク４には転動体８用の軌道4aとなる
凹溝を周設してある。Further, the yoke 3 is provided with a concave groove serving as a raceway 3a for the rolling element 9, and the yoke 4 is provided with a concave groove serving as a raceway 4a for the rolling element 8.
また、11a、11b、11cは前記プロペラシャフト１と２及
び作業機側ヨーク３等を覆う樹脂製の雄側保護カバー11
であって、特にカバー11bはヨーク３部を覆うカバー11c
に嵌挿され前記転動体９の外輪11dを嵌合する構造にし
てある。同様に、12a、12b、12c、は前記プロペラシャ
フト１と２及び作業機側ヨーク４等を覆う樹脂製の雄側
保護カバー12であって、特にカバー12bはカバー12cに嵌
挿され前記転動体８の外輪12dを嵌合する構造にしてあ
る。Reference numerals 11a, 11b, and 11c are resin-made male side protective covers 11 for covering the propeller shafts 1 and 2, the working machine side yoke 3 and the like.
In particular, the cover 11b is the cover 11c that covers the yoke 3 part.
The outer ring 11d of the rolling element 9 is fitted in the structure. Similarly, 12a, 12b, 12c are male protective covers 12 made of resin for covering the propeller shafts 1 and 2, the working machine side yoke 4, etc., and in particular, the cover 12b is inserted into the cover 12c and the rolling element The outer ring 12d of 8 is fitted.
次に、21はカバー12に設けた突起10に係止されたフック
であり、23は連結金具22と連結金具24とを連結するシャ
ーピンである。また連結金具24にはピン25が取付けら
れ、該ピン25を介して合わせ目26aを設けたリング26が
嵌められ、次のリング27に連結されている。即ち、これ
らのフック21、シャーピン23、連結金具22や24、ピン2
5、リング26、リング27等はこの考案で使用する鎖20を
構成する。尚、鎖20の他方のフック21はトラクタの固定
部に係止される。Next, 21 is a hook that is locked to the protrusion 10 provided on the cover 12, and 23 is a shear pin that connects the connecting fitting 22 and the connecting fitting 24. Further, a pin 25 is attached to the connecting fitting 24, a ring 26 provided with a joint 26a is fitted through the pin 25, and is connected to the next ring 27. That is, these hooks 21, shear pins 23, connecting fittings 22 and 24, pins 2
5, the ring 26, the ring 27, etc. constitute the chain 20 used in the present invention. The other hook 21 of the chain 20 is locked to the fixed portion of the tractor.
第２図（１）は前記するシャーピン23の側面図である。
この図に示すように該シャーピン23の首23aは径を絞る
ように加工してある。FIG. 2 (1) is a side view of the shear pin 23 described above.
As shown in this figure, the neck 23a of the shear pin 23 is processed so as to reduce its diameter.
上記したように従来の鎖では引張強度が108kgf程度で、
樹脂製のカバーは引張強度が100Kgf程度である。そこで
シャーピン23の首23aを細く絞るように加工し強度を60
〜70kgf程度となる。As described above, the conventional chain has a tensile strength of about 108 kgf,
The resin cover has a tensile strength of about 100 Kgf. Therefore, the neck 23a of the shear pin 23 is processed so as to be squeezed so that the strength is 60.
It will be about 70kgf.
従って若しトラクタより作業機へ動力伝達中に何らかの
拍子に樹脂製のカバー12等が回転した場合、鎖の該シャ
ーピン23部分が最弱部となるので樹脂製カバー12が破損
する前に、第２図（２）に示すようにシャーピン23の首
23aが破断し樹脂製のカバー12等の破損が防止される。Therefore, if the resin cover 12 or the like rotates at some time during power transmission from the tractor to the working machine, the shear pin 23 portion of the chain becomes the weakest part, so before the resin cover 12 is damaged, 2 Neck of sharpening pin 23 as shown in Fig. (2)
23a is broken and damage to the resin cover 12 and the like is prevented.
次に、第３図（１）は他の実施例で前記した鎖の金具24
にピン25を介して連結されたリング26の平面図である。
このリングには合わせ目26aが設けてあるが、該リング2
6に60〜70Kgf程度の引張力がかかった時、第３図（２）
に示すように合わせ目26aが降伏してへたり、延びきっ
て鎖から外れるようにしており、シャーピン23と同様樹
脂製のカバー12に破損を防止することができる。Next, FIG. 3 (1) shows the chain fitting 24 described in another embodiment.
FIG. 9 is a plan view of a ring 26 connected to the pin via a pin 25.
This ring has a seam 26a.
When a tensile force of 60 to 70 Kgf is applied to 6, Fig. 3 (2)
As shown in FIG. 7, the seam 26a yields, or extends and extends so that it is removed from the chain, and like the shear pin 23, damage to the resin cover 12 can be prevented.
尚、第１図に示すように、鎖20を構成するフック21はト
ラクタ側の樹脂製のプロペラシャフトカバー12側でな
く、作業機側の樹脂製のプロペラシャフトカバー11に突
起を設けフックを該突起と作業機固定部に係止するよう
にしても良い。また、上記実施例において鎖20を構成す
る金具22と24及びピン25等は実施例通りでなくても良
く、他の形状や構造であっても良い。要するにこの考案
にかかるプロペラシャフトの保護カバー装置ではこれら
のフック21や連結金具22等の間に上記するシャーピン23
或いはリング26等の破損防止装置を鎖20の連結構造の一
部として構成させれば良い。As shown in FIG. 1, the hooks 21 forming the chain 20 are not provided on the resin propeller shaft cover 12 side on the tractor side, but on the resin propeller shaft cover 11 on the working machine side by providing protrusions. You may make it engage with a protrusion and a working machine fixing part. Further, in the above-described embodiment, the metal fittings 22 and 24, the pin 25, and the like constituting the chain 20 do not have to be as in the embodiment, and may have another shape or structure. In short, in the protective cover device for the propeller shaft according to the present invention, the shear pin 23 described above is provided between the hooks 21 and the connecting fittings 22.
Alternatively, the damage preventing device for the ring 26 or the like may be configured as a part of the connecting structure of the chains 20.
この考案にかかるプロペラシャフトの保護カバー装置は
以上詳述したような構成としたので、プロペラシャフト
の回転によって何らかの力がカバー側に働き該カバー側
が回転し回転防止手段に異常な引張力が働いても、該回
転防止手段に設けた破損防止装置が保護カバーよりも早
期に破損し樹脂製の保護カバー自体が破損することを防
止できる。従って保護カバーが破損してトラクタと作業
機との間の動力伝達機構が露出することはなく安全であ
る。Since the protective cover device for the propeller shaft according to the present invention is configured as described above in detail, some force acts on the cover side due to the rotation of the propeller shaft and the cover side rotates, and an abnormal pulling force acts on the rotation preventing means. Also, it is possible to prevent the breakage prevention device provided in the rotation preventing means from breaking earlier than the protection cover and the breakage of the resin protection cover itself. Therefore, the protective cover is not damaged and the power transmission mechanism between the tractor and the working machine is not exposed, which is safe.
【図面の簡単な説明】 第１図はこの考案にかかるプロペラシャフトの保護カバ
ー装置の一部断面図を含む実施例図、第２図（１）はこ
の考案にかかるプロペラシャフトの保護カバー装置の破
損防止装置として使用するシャーピンの側面図で、同図
（２）はこのシャーピンの破断状態を示す側面図、第３
図（１）はこの考案にかかる破損防止装置の他の実施例
としてのリングの平面図で、同図（２）はこのリングが
降伏してへたった状態の平面図、第４図（１）は従来の
プロペラシャフトカバーに繋がれている鎖のフック部分
の一部正面図で、同図（２）はこの鎖が降伏してへたっ
た場合の一部正面図である。 １、２…プロペラシャフト 10…フック係止用突起 11、12…プロペラシャフトカバー 20…鎖 21…フック 23…シャーピン 22、24…連結金具 26…リングBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an embodiment view including a partial cross-sectional view of a propeller shaft protective cover device according to the present invention, and FIG. 2 (1) is a propeller shaft protective cover device according to the present invention. FIG. 3 is a side view of a shear pin used as a breakage preventing device, and FIG. 2B is a side view showing a broken state of the shear pin.
FIG. 1A is a plan view of a ring as another embodiment of the breakage prevention device according to the present invention, and FIG. 2B is a plan view of the ring in a state in which the ring has yielded, and FIG. Is a partial front view of a hook portion of a chain connected to a conventional propeller shaft cover, and FIG. 2 (2) is a partial front view of the chain when it yields and falls. 1, 2 ... Propeller shaft 10 ... Hook locking projections 11, 12 ... Propeller shaft cover 20 ... Chain 21 ... Hook 23 ... Shear pin 22, 24 ... Coupling metal 26 ... Ring
Claims (1)
達用のプロペラシャフト及びジョイント機構を覆うプロ
ペラシャフトの保護カバーと、該カバーと機械本体に係
止部を設けた鎖の両端を連結した回転防止手段とを有す
るプロペラシャフトの保護カバー装置において、前記回
転防止手段に保護カバーよりも早期に破損することによ
り保護カバーの破損を防止する破損防止装置を設けたこ
とを特徴とするプロペラシャフトの保護カバー装置。1. A protective cover for a propeller shaft for connecting a tractor and a working machine for power transmission and a propeller shaft for covering a joint mechanism, and both ends of a chain provided with a locking portion on the cover and a machine body. A protective cover device for a propeller shaft having a rotation preventing means, characterized in that the rotation preventing means is provided with a damage preventing device for preventing damage to the protective cover due to damage earlier than the protective cover. Protective cover device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989004217U JPH073065Y2 (en) | 1989-01-17 | 1989-01-17 | Propeller shaft protective cover device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989004217U JPH073065Y2 (en) | 1989-01-17 | 1989-01-17 | Propeller shaft protective cover device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0294935U JPH0294935U (en) | 1990-07-27 |
| JPH073065Y2 true JPH073065Y2 (en) | 1995-01-30 |
Family
ID=31206529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989004217U Expired - Lifetime JPH073065Y2 (en) | 1989-01-17 | 1989-01-17 | Propeller shaft protective cover device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073065Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS643128U (en) * | 1987-06-25 | 1989-01-10 |
-
1989
- 1989-01-17 JP JP1989004217U patent/JPH073065Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0294935U (en) | 1990-07-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |