JPH0242506Y2 - - Google Patents
Info
- Publication number
- JPH0242506Y2 JPH0242506Y2 JP1984164831U JP16483184U JPH0242506Y2 JP H0242506 Y2 JPH0242506 Y2 JP H0242506Y2 JP 1984164831 U JP1984164831 U JP 1984164831U JP 16483184 U JP16483184 U JP 16483184U JP H0242506 Y2 JPH0242506 Y2 JP H0242506Y2
- Authority
- JP
- Japan
- Prior art keywords
- differential
- transmission case
- shaft
- cylinder block
- case
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 22
- 230000000694 effects Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000881 depressing effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Landscapes
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
- Motor Power Transmission Devices (AREA)
- Retarders (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はデフ装置を内装した伝動ケースの両側
に車輪駆動用の差動軸を突設し、両差動軸に夫々
油圧式デイスクブレーキを構成するためのデイス
クを装備するとともに、前記デフ装置のデフロツ
ク機構を前記伝動ケースに内装してある作業者の
走行伝動構造に関する。[Detailed description of the invention] [Field of industrial application] This invention has differential shafts for driving the wheels protruding from both sides of a transmission case that houses a differential device, and hydraulic disc brakes are installed on both differential shafts, respectively. The present invention relates to a travel transmission structure for a worker, which is equipped with a disk for configuring the system, and a differential lock mechanism of the differential device is housed in the transmission case.
従来、この種の作業車の走行伝動構造としては
実願昭56−47614号（実開昭57−159850号）の願
書に添付した明細書及び図面の内容を撮影したマ
イクロフイルムに示されたもののように、センタ
ーボツクス、アクスルケース等を連設することに
よつて構成されされるミツシヨンケースの内部に
デフ装置、デフロツク機構、およびデイスクブレ
ーキを全て装備したものが知られている。
Conventionally, the traveling transmission structure of this type of work vehicle was shown in the microfilm photographing the contents of the specification and drawings attached to the application of Utility Model Application No. 56-47614 (Utility Model Application No. 57-159850). It is known that a transmission case, which is constructed by connecting a center box, an axle case, etc., is equipped with a differential device, a deflock mechanism, and a disc brake.
従つて、従来の構成のものでは、油圧式デイス
クブレーキ機構、油圧式デフロツク装備を組立て
る場合、フロントアクスルケースの組立てと並行
して行うようになるので、組立作業が複雑になる
とともに、例えば点検や整備でデイスクブレーキ
のみを分解しようとする場合には、アクスルケー
スまで外せねばならず、大変面倒であつて、いき
おいブレーキの保守状態が悪くなるといつたこと
を招来するおそれもあり、改良の余地があつた。
Therefore, in the conventional structure, when assembling the hydraulic disc brake mechanism and hydraulic differential lock equipment, it is done in parallel with the assembly of the front axle case, which complicates the assembly work and requires, for example, inspection and maintenance. When attempting to disassemble only the disc brake for maintenance, the axle case must also be removed, which is very troublesome and may lead to poor maintenance of the brake, leaving room for improvement. It was hot.
本考案は、上記不都合を解消した作業者の走行
伝動構造を提供する点に目的を有する。 An object of the present invention is to provide a travel transmission structure for a worker that eliminates the above-mentioned disadvantages.
本考案の特徴構成は、前記伝動ケースの上部
に、前記デフロツク機構への連動機構を備えたシ
リンダブロツクを取付けるとともに、このシリン
ダブロツクの前記差動軸の軸線方向側端部夫々
に、前記各デイスクブレーキの前記デイスクを挾
圧するためのブレーキピストンを内嵌してある点
にあり、その作用、及び効果は次の通りである。
The characteristic configuration of the present invention is that a cylinder block having an interlocking mechanism for the differential shaft is attached to the upper part of the transmission case, and each of the disks is attached to each end of the cylinder block in the axial direction of the differential shaft. A brake piston for clamping and compressing the disc of the brake is fitted inside, and its functions and effects are as follows.
つまり、デフロツクへの連動機構を備えたシリ
ンダブロツクがデフケース上部に載置される状態
で配置されることに着目することにより、そのシ
リンダケースにデイスクブレーキ用ピストンを一
体的に内嵌し得たのである。
In other words, by focusing on the fact that the cylinder block, which is equipped with an interlocking mechanism for the differential lock, is placed on top of the differential case, it was possible to fit the disc brake piston integrally into the cylinder case. be.
すなわち、デフケースとは別体のシリンダブロ
ツクに連動機構、およびデイスクブレーキ用ピス
トンを配設したので、これらを予備組み付けして
おいてからデフケースに組み付けられるので、従
来のようにブレーキとケースの組付を並行して行
う必要がないとともに、デイスクブレーキの分解
をケース類を外すことなく行なえるようになる。 In other words, since the interlocking mechanism and the disc brake piston are installed in a cylinder block that is separate from the differential case, these can be preassembled before being assembled to the differential case, making it easier to assemble the brake and case as before. There is no need to carry out the above operations in parallel, and the disc brake can be disassembled without removing the case.
従つて、デフロツク機構への連動機構用として
本来的に備えられているシリンダブロツクと、デ
イスクのデフケースに対する配設位置とに着目
し、これらを合理的に組み合わせ配置して得られ
た前記構成により、従来の不都合を一掃した作業
者の走行伝動構造を提供することができた。
Therefore, by focusing on the cylinder block that is originally provided as an interlocking mechanism for the differential lock mechanism and the position of the disk relative to the differential case, the above structure was obtained by rationally combining and arranging these. It has been possible to provide a travel transmission structure for workers that eliminates the conventional inconveniences.
以下、本考案の実施例を図面に基づいて説明す
る。
Hereinafter, embodiments of the present invention will be described based on the drawings.
第５図に示すように、前後夫々にステアリング
操作可能な駆動車輪１，２を軸架した車体３の前
部にエンジン４、後部に流体圧式無段変速駆動装
置５と伝動ケース６とを連結状態で搭載し、前後
車輪１，２の中間にモア７を駆動自在かつ、昇降
自在に設けて作業者の１例として、ミツドマウン
ト型芝刈機が構成されている。 As shown in FIG. 5, a vehicle body 3 has drive wheels 1 and 2 that can be steered at the front and rear, respectively, and an engine 4 is connected to the front part of the vehicle, and a hydraulic continuously variable transmission drive device 5 and a transmission case 6 are connected to the rear part of the vehicle body 3. As an example, a mid-mounted lawn mower is constructed by installing a mower 7 between the front and rear wheels 1 and 2 so that it can be driven and moved up and down.
第１図乃至第４図に示すように、前記変速駆動
装置５には、エンジン４からの駆動軸８が連結す
る入力軸９、入力軸９の下方で前方に向けて配設
した第１出力軸１０、入力軸９と直結状態で装置
５の裏面から突出する第２出力軸9a、この出力
軸9aに下方で後方に向けて配設した第３出力軸
１１が設けられている。第１出力軸１０は伝動軸
１２を介して前車輪１を駆動し、第２出力軸９ａ
は中間軸１３、油圧クラツチ１４、ギヤ連動機構
１５、遊星減速機構１６を介して後部PTO軸１
７を駆動すると共に、前記ギヤ連動機構１５から
の駆動力で伝動ケース６下部の前部PTO軸１８、
及び伝動軸１９を介して前記モア７を駆動する。 As shown in FIGS. 1 to 4, the variable speed drive device 5 includes an input shaft 9 to which a drive shaft 8 from the engine 4 is connected, and a first output disposed below the input shaft 9 and facing forward. A second output shaft 9a protrudes from the rear surface of the device 5 in direct connection with the shaft 10, the input shaft 9, and a third output shaft 11 disposed downwardly and rearward on the output shaft 9a. The first output shaft 10 drives the front wheels 1 via the transmission shaft 12, and the second output shaft 9a
is connected to the rear PTO shaft 1 via the intermediate shaft 13, hydraulic clutch 14, gear interlocking mechanism 15, and planetary reduction mechanism 16.
At the same time, the front PTO shaft 18 at the lower part of the transmission case 6 is driven by the driving force from the gear interlocking mechanism 15.
and drives the mower 7 via the transmission shaft 19.
そして、第３出力軸１１はギヤ連動機構２０、
デフ装置２１、左右差動軸２２，２２を介して後
車輪２を駆動する。前記左差動軸２２の伝動ケー
ス内部分に、左差動軸２２の軸心方向に摺動可能
にスリーブ２３がスプライン嵌合し、このスリー
ブ２３及び、前記デフ装置２１のケース部２１ａ
夫々に形成した係合機構２３Ｋ，２１Ｋの係合に
よつてデフ装置２１の働きを停止させる、いわゆ
る、デフロツク機構Ｄが伝動ケース６内に装備さ
れている。そして、前記スリーブ２３はバネ２４
によつて、前記係合機構２３Ｋ，２１Ｋの係合方
向に付勢され、かつ、伝動ケース６に取付け、か
つシリンダブロツク化した部材２５にデフロツク
機構Ｄへの連動機構としてのピストン２６の駆動
でシフトフオーク２７を介して操作される。 The third output shaft 11 is a gear interlocking mechanism 20,
The rear wheels 2 are driven via the differential device 21 and the left and right differential shafts 22, 22. A sleeve 23 is spline-fitted into the transmission case inner portion of the left differential shaft 22 so as to be slidable in the axial direction of the left differential shaft 22, and the sleeve 23 and the case portion 21a of the differential device 21
The transmission case 6 is equipped with a so-called deflock mechanism D that stops the operation of the differential device 21 by engagement of the respective engagement mechanisms 23K and 21K. The sleeve 23 has a spring 24
As a result, the piston 26 as an interlocking mechanism to the differential lock mechanism D is biased in the direction of engagement of the engaging mechanisms 23K and 21K, and is attached to the transmission case 6 and formed into a cylinder block member 25. It is operated via the shift fork 27.
前記部材２５の左右両側部には、前記差動軸２
２，２２の略上方に位置させて両外側方向に突出
駆動可能なピストン２８，２８を内嵌したシリン
ダ部２８ｃ，２８ｃを形成することで部材２５を
シリンダブロツク化すると共に、両シリンダ部２
８ｃ，２８ｃに対向させ、かつ、一定量離間させ
て更に外方に部材２９，２９が前記部材２５に対
してボルト３０…で固定されている。夫々の部材
２５，２９，２９にパツド３１，３１を係入する
と共に、両パツド３１，３１の間に位置させて左
右差動軸２２，２２の伝動ケース外のボス３２，
３２にスプライン嵌合するデイスク３３，３３を
設けて油圧式デイスクブレーキＢ，Ｂが構成され
ている。 The differential shaft 2 is provided on both left and right sides of the member 25.
By forming cylinder portions 28c, 28c in which pistons 28, 28 which are positioned substantially above the cylinders 2, 22 and are capable of protruding and driving in both outward directions are fitted, the member 25 is made into a cylinder block, and both cylinder portions 2 are formed.
Members 29, 29 are fixed to the member 25 with bolts 30, facing the members 8c, 28c and spaced apart from each other by a certain amount. The pads 31, 31 are engaged with the respective members 25, 29, 29, and the bosses 32 outside the transmission case of the left and right differential shafts 22, 22 are positioned between the pads 31, 31.
Hydraulic disc brakes B, B are constructed by providing discs 33, 33 which are spline-fitted to 32.
前記ピストン２６，２８，２８に作動油を供給
する油路３４ａ，３４ｂが前記部材２５に穿設し
て形成され、ブレーキ作動用バルブ３５とデフロ
ツク作動用バルブ３６夫々を、そのシリンダポー
ト３５ａ，３６ａが前記油路３４ａ，３４ｂと連
通するよう部材２５に取付けてある。 Oil passages 34a, 34b for supplying hydraulic oil to the pistons 26, 28, 28 are formed by drilling in the member 25, and the brake operation valve 35 and the differential lock operation valve 36 are connected to the cylinder ports 35a, 36a, respectively. are attached to the member 25 so as to communicate with the oil passages 34a, 34b.
尚、図中の３７，３７は、部材２５に一体的に
形成されたリリーフバルブであり、３８ａ，３８
ｂは夫々部材２５に形成された作動油のポンプ側
ポート及び排油側ポートである。又、前記バルブ
３５，３６は、ミツシヨンケース６の上部左右に
配設した作動油タンク３９と燃料タンク４０との
間の隙間に位置決めされている。 In addition, 37, 37 in the figure are relief valves formed integrally with the member 25, and 38a, 38
b denotes a hydraulic oil pump side port and an oil drain side port formed in the member 25, respectively. Further, the valves 35 and 36 are positioned in a gap between a hydraulic oil tank 39 and a fuel tank 40, which are arranged on the left and right sides of the upper part of the transmission case 6.
又、前記部材２５には上下方向に向う孔２５ａ
を形成すると共に、この孔２５ａの内径より一定
量だけ小径の回動軸４１を回動可能に孔２５ａ内
に配設し、更に、孔２５ａ上下部分にゴム材等弾
性変形可能なリング材４２，４２を配設して、回
動軸４１を支持させている。回動軸４１には左右
にカム面４１ａ，４１ａを形成し、このカム面４
１ａ，４１ａと前記ピストン２８，２８裏面との
間にロツド４３，４３を介装してある。そして、
車体３の側部に配設した駐車ブレーキペダル（図
外）の踏み込み操作で、回動軸４１の上部のアー
ム４４が操作され、ブレーキを働らかせることも
できる。 Further, the member 25 has a hole 25a facing in the vertical direction.
At the same time, a rotation shaft 41 having a diameter smaller than the inner diameter of the hole 25a by a certain amount is rotatably disposed in the hole 25a, and a ring material 42 that can be elastically deformed, such as a rubber material, is provided in the upper and lower parts of the hole 25a. , 42 are arranged to support the rotating shaft 41. Cam surfaces 41a, 41a are formed on the left and right sides of the rotation shaft 41, and these cam surfaces 4
Rods 43, 43 are interposed between 1a, 41a and the back surfaces of the pistons 28, 28. and,
By depressing a parking brake pedal (not shown) provided on the side of the vehicle body 3, the upper arm 44 of the rotation shaft 41 is operated, and the brake can also be applied.
第６図に示すように、前後車輪１，２は、夫々
ともそのリム４５の外側にハブ４６をボルト４７
…で予め固定しておき、車軸４８とハブ４６をス
プライン嵌合させ、車輪４８端に螺合するナツト
４９の締付けで、車軸４８に対して取付けられて
いる。尚、車軸４８は、ベアリング５０，５０で
伝動ケース５１に対して支持されると共に、ベベ
ルギヤ機構５２及び伝動軸５３を介して駆動され
る。 As shown in FIG. 6, the front and rear wheels 1 and 2 each have a hub 46 attached to the outside of the rim 45 by bolts 47.
..., and is attached to the axle 48 by spline-fitting the axle 48 and the hub 46, and tightening a nut 49 that is threaded onto the end of the wheel 48. Note that the axle 48 is supported by bearings 50 and 50 with respect to the transmission case 51, and is driven via a bevel gear mechanism 52 and a transmission shaft 53.
本実施例ではデフロツク用ピストン２６をシリ
ンダブロツク、つまり、部材２５に内嵌する状態
で設けてあつたが、デフロツク用シリンダを部材
２５とは別の部材で組立て実施しても良く、作業
車には芝刈機以外、農用トラクタ、運搬車等を適
用しても良い。
In this embodiment, the differential piston 26 is fitted inside the cylinder block, that is, the member 25, but the differential cylinder may be assembled with a separate member from the member 25, and the differential piston 26 may be attached to the work vehicle. In addition to lawn mowers, agricultural tractors, transport vehicles, etc. may also be used.
図面は本考案に係る作業車の走行伝動構造の実
施例を示し、第１図は伝動ケースの縦断背面図、
第２図は伝動ケースの縦断側面図、第３図は伝動
ケース等の側面図、第４図はパツド取付部の横断
平面図、第５図は芝刈機の全体側面図、第６図は
車輪の取付構造を示す縦断正面図である。
６……伝動ケース、２１……デフ装置、２２…
…差動軸、２５……シリンダブロツク、２６……
ピストン、２８……ブレーキピストン、３３……
デイスク、Ｂ……デイスクブレーキ、Ｄ……デフ
ロツク機構。
The drawings show an embodiment of the traveling transmission structure for a working vehicle according to the present invention, and FIG. 1 is a vertical cross-sectional rear view of the transmission case;
Figure 2 is a vertical side view of the transmission case, Figure 3 is a side view of the transmission case, etc., Figure 4 is a cross-sectional plan view of the pad attachment part, Figure 5 is an overall side view of the lawn mower, and Figure 6 is the wheels. FIG. 3 is a longitudinal sectional front view showing the mounting structure. 6...Transmission case, 21...Differential device, 22...
...Differential shaft, 25...Cylinder block, 26...
Piston, 28... Brake piston, 33...
Disc, B...Disk brake, D...Diff lock mechanism.
Claims (1)
車輪駆動用の差動軸２２，２２を突設し、両差動
軸２２，２２に夫々油圧式デイスクブレーキＢ，
Ｂを構成するためのデイスク３３，３３を装備す
るとともに、前記デフ装置２１のデフロツク機構
Ｄを前記伝動ケース６に内装してある作業車の走
行伝動構造であつて、前記伝動ケース６の上部
に、前記デフロツク機構Ｄへの連動機構２６を備
えたシリンダブロツク２５を取付けるとともに、
このシリンダブロツク２５の前記差動軸２２，２
２の軸線方向側端部夫々に、前記各デイスクブレ
ーキＢ，Ｂの前記デイスク３３，３３を挾圧する
ためのブレーキピストン２８，２８を内嵌してあ
る作業車の走行伝動構造。 Differential shafts 22, 22 for driving wheels are protruded from both sides of the transmission case 6 in which the differential device 21 is installed, and hydraulic disc brakes B,
This is a traveling transmission structure for a working vehicle, which is equipped with disks 33, 33 for configuring the transmission case 6, and a differential lock mechanism D of the differential device 21 is installed inside the transmission case 6. , while installing a cylinder block 25 equipped with an interlocking mechanism 26 to the differential lock mechanism D,
The differential shafts 22, 2 of this cylinder block 25
A traveling transmission structure for a work vehicle, in which brake pistons 28, 28 for clamping and compressing the discs 33, 33 of the disc brakes B, B are fitted in the axial side ends of the disc brakes B, respectively.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984164831U JPH0242506Y2 (en) | 1984-10-31 | 1984-10-31 | |
| AU46955/85A AU564090B2 (en) | 1984-10-31 | 1985-09-02 | Automatic differential locking system |
| US06/775,855 US4671376A (en) | 1984-10-31 | 1985-09-13 | Automatic differential locking system for a working vehicle |
| GB8523275A GB2168116B (en) | 1984-10-31 | 1985-09-20 | Automatic differential locking system for a working vehicle |
| CA492599A CA1263088C (en) | 1984-10-31 | 1985-10-09 | Automatic differential locking system |
| DE3538802A DE3538802C2 (en) | 1984-10-31 | 1985-10-31 | Automatic differential locking system for work vehicles and work vehicle equipped with an automatic differential locking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984164831U JPH0242506Y2 (en) | 1984-10-31 | 1984-10-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6180125U JPS6180125U (en) | 1986-05-28 |
| JPH0242506Y2 true JPH0242506Y2 (en) | 1990-11-13 |
Family
ID=30722694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984164831U Expired JPH0242506Y2 (en) | 1984-10-31 | 1984-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0242506Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57159850U (en) * | 1981-04-01 | 1982-10-07 |
-
1984
- 1984-10-31 JP JP1984164831U patent/JPH0242506Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6180125U (en) | 1986-05-28 |
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| JPS61261127A (en) | Hydraulically driven mission device in tractor | |
| JPS621867Y2 (en) | ||
| JPH0334338Y2 (en) | ||
| JP2604930Y2 (en) | Moving agricultural machine | |
| JPS6286420U (en) | ||
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| JPH0445695B2 (en) | ||
| JPS6243888Y2 (en) | ||
| JPH0351214Y2 (en) |