JP3480995B2 - Lower roller support mechanism for crawler type traveling device - Google Patents
Lower roller support mechanism for crawler type traveling deviceInfo
- Publication number
- JP3480995B2 JP3480995B2 JP23738394A JP23738394A JP3480995B2 JP 3480995 B2 JP3480995 B2 JP 3480995B2 JP 23738394 A JP23738394 A JP 23738394A JP 23738394 A JP23738394 A JP 23738394A JP 3480995 B2 JP3480995 B2 JP 3480995B2
- Authority
- JP
- Japan
- Prior art keywords
- equalizer
- pivot
- frame
- crawler
- traveling device
- 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 - Fee Related
Links
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明はクローラ式走行装置の下
部転輪支持機構に関する。
【０００２】
【従来の技術】従来、クローラ式走行装置では、路面の
小突起等による車体の衝撃や動揺を緩和するために、図
４及び図５で示すように、走行部フレームａとクローラ
との間に介在して車体重量を支承する下部転輪b,b を、
イコライザｄを介して走行部フレームａに取付けてい
る。
【０００３】すなわち、走行部フレームａに枢軸ｅを介
して回動自在に取付けたイコライザｄの中央部を走行部
フレームａに回動自在に取り付け、同イコライザｄの前
後端部にそれぞれ前後下部転輪b,b を軸支することによ
って、路面の小突起等による一方の下部転輪の変位が、
イコライザｄによって略1/2 に減少して走行部フレーム
ａに伝達され衝撃や揺動を緩和することになる。
【０００４】また、上記枢軸ｅを略正方形断面のゴムブ
ッシュｆを介して走行部フレームａに取付け、同ゴムブ
ッシュｆの弾力性を利用して、イコライザｄの緩衝機能
を高めたり、イコライザｄの姿勢保持をはかったものも
ある。
【０００５】そして、このイコライザｄの構造は、内外
一対の板状イコライザg,g の間にゴムブッシュｆを挟装
し、枢軸ｅと板状イコライザg,g とを溶接ｈによって一
体化している。
【０００６】
【発明が解決しようとする課題】ところが、上記ゴムブ
ッシュｆが、内外一対の板状イコライザg,g の間に挟装
されているため、ゴムブッシュｆの軸方向の長さを大き
くとることができず、そのため、イコライザｄが左右傾
動しやすくなり、クローラ外れを誘発するという問題が
ある。
【０００７】また、上記ゴムブッシュｆが略正方形断面
であるため、ゴムの変形量が大きくなり、疲労によって
ゴムに亀裂が発生しやすいという問題がある。
【０００８】また、ゴムブッシュｆが溶接によって枢軸
ｅと板状イコライザg,g と一体化されているため、ゴム
ブッシュを交換する際には、枢軸ｅと板状イコライザg,
g とを同時に交換せねばならず、不経済であった。
【０００９】
【課題を解決するための手段】本発明では、走行部フレ
ームの下面に左右方向の枢軸を設け、同枢軸に前後方向
に伸延したイコライザの中途部を回動自在に枢着し、同
イコライザの前後端部にそれぞれクローラ内面を転動す
る前後下部転輪を軸支したクローラ式走行装置であっ
て、前記枢軸の中央部にイコライザを枢着し、同枢軸の
左右端部を、それぞれ左右ゴムブッシュを介し、走行部
フレームの下面左右側に着脱自在に垂設した左右軸受部
に支承せしめたクローラ式走行装置の下部転輪支持機構
において、走行部フレームの下面と当接してイコライザ
の傾動を規制するストッパ部を前記イコライザの上面に
形成しているものである。
【００１０】そして、特に、前記ストッパ部は、前記イ
コライザ上面中央の枢軸上方位置から前後端部に向かっ
て下り勾配状で、しかも、中央部を上方向に突出した湾
曲状に形成し、前記イコライザの前後傾斜が大きくなる
にしたがって、前記ストッパ部と走行部フレームとの当
接点を前記枢軸から離隔させるべく構成したことに特徴
を有するものである。
【００１１】
【実施例】本発明の実施例を図面を参照して説明する。
【００１２】図１は、本発明に係るクローラ式走行装置
の下部転輪支持機構を具備する農業用のトラクタＡを示
しており、同トラクタＡは、後述するクローラ式走行装
置１の上面に機体フレーム２を載設し、同機体フレーム
２の上面前部に原動機部３を搭載し、同機体フレーム２
の上面後部に、操向ハンドル４及び座席５等よりなる運
転部６を被包したキャビン７を載設し、機体フレーム２
の後端部に３点リンク機構８と昇降機構９とを介してロ
ータリー式耕耘機Ｂを昇降自在に連結している。
【００１３】クローラ式走行装置１は、図１で示すよう
に、水平枠形状に形成した走行部フレーム10の前端部に
駆動スプロケット11を軸支し、同走行部フレーム10の後
端部に従動スプロケット12を軸支し、走行部フレーム10
の上面に上部転輪13を軸支し、走行部フレーム10の下方
にそれぞれ２個の下部転輪14,14 を軸支した前後２組の
下部転輪支持機構Ｄを取付けている。
【００１４】下部転輪支持機構Ｄは、図１〜図３で示す
ように、走行部フレーム10の下面に所定間隔を設けて左
右軸受部15,15 を着脱自在に垂設し、左右軸受部15,15
にそれぞれ左右ゴムブッシュ16,16 を圧入し、左右ゴム
ブッシュ16,16 に枢軸17を圧入して、同枢軸17の中央部
に、左右一対のイコライザ板18,18 よりなるイコライザ
19の中央上部を固着し、同イコライザ19の前後端部にそ
れぞれ前後下部転輪軸受部20,20 を固設して、同前後下
部転輪軸受部20,20 にそれぞれ前後下部転輪軸21,21 を
軸支し、同前後下部転輪軸21,21 の左右端部にそれぞれ
略椀形状の左右下部転輪本体22,22 をナット23,23 を介
して取付けている。
【００１５】そして、前記駆動スプロケット11、従動ス
プロケット12、上部転輪13及び下部転輪14…の外周にク
ローラ24を巻回し、原動機部３からの動力により駆動ス
プロケット11を介しクローラ24を駆動して、トラクタＡ
を走行させるようにしている。
【００１６】図２中、25はクローラ24の内周面に突設し
た突起であり、同突起25の左右側に当接した前記左右下
部転輪本体22,22 によって、クローラ24の左右方向の移
動を規制することによりクローラ24の外れを防止してい
る。
【００１７】また、26は軸受部取付ボルト、27は軸受部
高さ調整板、28は塵埃よけプラグ、29は止め輪である。
【００１８】かかる構成によって、トラクタＡの走行
中、路面の小突起等によって一方の下部転輪14が変位し
ても、イコライザ19によって略1/2 に減少して走行部フ
レーム10に伝達されるので、路面からの衝撃や揺動を緩
和することができ、乗心地を良くすることができる。
【００１９】特に、イコライザ19を支持する枢軸17が、
その両端部がゴムブッシュ16,16 を介し左右軸受部15,1
5 で支持されるているので、イコライザ19の左右傾動が
効果的に抑制され、同左右傾動によるクローラ24の外れ
を防止することができる。
【００２０】また、イコライザ19の上面中央の枢軸17上
方位置から前後端部に向かって下り勾配状で、しかも、
中央部が上方向に突出した湾曲状に形成されたストッパ
部s,s を形成ている。
【００２１】かかる構成によって、イコライザ19が傾動
したとき、同イコライザ19上面のストッパ部s,s が、走
行部フレーム10の下面に当接して、イコライザ19の傾動
を規制することができる。
【００２２】また、軸受部取付ボルト26の挿脱によって
左右軸受部15,15 が着脱可能であるので、ゴムブッシュ
16,16 だけを交換することができることから、イコライ
ザ全体を交換する必要がなく経済的である。
【００２３】また、上記イコライザ19の傾動規制は、ス
トッパ部s,s と走行部フレーム10下面との当接点ｐを支
点としたゴムブッシュ16,16 の半径方向の弾性による反
力によって行われるのであるが、上記ストッパ部s,s
を、イコライザ19上面中央の枢軸17上方位置から前後端
部に向かって下り勾配状で、しかも、中央部が上方向に
突出した湾曲状に形成したことによって、イコライザ19
の前後傾斜が大きくなるにしたがって、イコライザ19の
傾動支点たるストッパ部s,s と走行部フレーム10との当
接点ｐが枢軸17から離隔するので、イコライザ19の傾動
角度と傾動規制力との関係が非線形になり、穏やかに、
かつ、効果的にイコライザの傾動規制を行うことができ
る。
【００２４】
【発明の効果】本発明によれば、走行部フレームの下面
に左右方向の枢軸を設け、同枢軸に前後方向に伸延した
イコライザの中途部を回動自在に枢着し、同イコライザ
の前後端部にそれぞれクローラ内面を転動する前後下部
転輪を軸支したクローラ式走行装置において、前記枢軸
の中央部にイコライザを枢着し、同枢軸の左右端部を、
それぞれ左右ゴムブッシュを介し、走行部フレームの下
面左右側に着脱自在に垂設した左右軸受部に支承せしめ
たことによって、枢軸をその両端部に配設したゴムブッ
シュで支持されることになるので、イコライザの左右傾
動を効果的に抑制してクローラ外れを防止することがで
きる。
【００２５】また、左右軸受部の着脱によって、ゴムブ
ッシュだけを交換することができるので、イコライザ全
体を交換する必要がなく、経済的である。
【００２６】また、上記イコライザの上面に、走行部フ
レームの下面と当接してイコライザの傾動を規制するス
トッパ部を形成したことによって、イコライザ傾動規制
のための部材や機構を要せず、構造を簡単にすることが
できる。
【００２７】また、上記ストッパ部によるイコライザの
傾動規制は、ストッパ部と走行部フレーム下面との当接
点を支点としたゴムブッシュの半径方向の弾性による反
力によって行われるのであるが、上記ストッパ部を、イ
コライザ上面中央の枢軸上方位置から前後端部に向かっ
て下り勾配状で、しかも、中央部が上方向に突出した湾
曲状に形成したことによって、イコライザの前後傾斜が
大きくなるにしたがって、イコライザの傾動支点たるス
トッパ部と走行部フレームとの当接点が枢軸から離隔す
るので、イコライザの傾動角度と傾動規制力との関係が
非線形になり、穏やかに、かつ、効果的にイコライザの
傾動規制を行うことができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower wheel supporting mechanism of a crawler type traveling device. 2. Description of the Related Art Conventionally, in a crawler type traveling apparatus, as shown in FIGS. 4 and 5, a traveling section frame a, a crawler, and The lower rolling wheels b, b interposed between and support the weight of the vehicle,
It is attached to the traveling section frame a via an equalizer d. [0003] That is, the center of an equalizer d rotatably mounted on a traveling section frame a via a pivot e is rotatably mounted on the traveling section frame a, and the front and rear lower rolls are respectively attached to the front and rear ends of the equalizer d. By supporting the wheels b, b, the displacement of one lower rolling wheel due to a small protrusion on the road surface,
It is reduced to approximately 1/2 by the equalizer d and transmitted to the traveling section frame a to reduce impact and swing. Further, the pivot e is attached to the running frame a via a rubber bush f having a substantially square cross section, and the elasticity of the rubber bush f is used to enhance the buffering function of the equalizer d or to increase the capacity of the equalizer d. Some are designed to maintain posture. In the structure of the equalizer d, a rubber bush f is sandwiched between a pair of inner and outer plate-like equalizers g, g, and the pivot e and the plate-like equalizers g, g are integrated by welding h. . However, since the rubber bush f is sandwiched between a pair of inner and outer plate-like equalizers g, g, the axial length of the rubber bush f is increased. Therefore, there is a problem that the equalizer d is easily tilted left and right, which causes the crawler to come off. Further, since the rubber bush f has a substantially square cross section, the amount of deformation of the rubber increases, and there is a problem that the rubber is liable to crack due to fatigue. Further, since the rubber bush f is integrated with the pivot e and the plate-like equalizers g, g by welding, when replacing the rubber bush, the pivot e and the plate-like equalizer g, g are replaced.
g had to be exchanged at the same time, which was uneconomical. According to the present invention, a left and right pivot is provided on the lower surface of the traveling unit frame, and a middle part of the equalizer extending in the front and rear direction is pivotally attached to the same pivot so as to be rotatable. A crawler-type traveling device that supports front and rear lower rolling wheels that roll the crawler inner surface at front and rear end portions of the equalizer, respectively.Equalizers are pivotally mounted at the center of the pivots, and left and right ends of the pivots are In the lower roller support mechanism of the crawler type traveling device supported on left and right bearings which are detachably mounted on the left and right sides of the lower surface of the traveling unit frame via left and right rubber bushes, the equalizer is brought into contact with the lower surface of the traveling unit frame. And a stopper for restricting the tilting of the equalizer is formed on the upper surface of the equalizer. [0010] In particular, the stopper portion is formed so as to have a downward slope from a position above the pivot at the center of the upper surface of the equalizer toward the front and rear ends, and furthermore, has a curved central portion protruding upward. The contact point between the stopper portion and the traveling portion frame is configured to be separated from the pivot as the front-back inclination increases. An embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a tractor A for agricultural use provided with a lower wheel supporting mechanism of a crawler type traveling apparatus according to the present invention. The frame 2 is mounted, and the prime mover unit 3 is mounted on the front part of the upper surface of the airframe 2.
A cabin 7 enclosing a driving unit 6 including a steering handle 4 and a seat 5 is mounted on the rear of the upper surface of the body frame 2.
A rotary tiller B is connected to a rear end of the rotary tiller B via a three-point link mechanism 8 and a lifting mechanism 9 so as to be able to move up and down. As shown in FIG. 1, the crawler type traveling device 1 supports a driving sprocket 11 at the front end of a traveling frame 10 formed in a horizontal frame shape, and is driven by the rear end of the traveling frame 10. The sprocket 12 is pivotally supported, and the running frame 10
An upper roller 13 is pivotally supported on the upper surface of the vehicle, and two sets of front and rear lower roller supporting mechanisms D which respectively support two lower rollers 14 are mounted below the traveling frame 10. As shown in FIGS. 1 to 3, the lower wheel supporting mechanism D is provided with left and right bearings 15 and 15 detachably provided at predetermined intervals on the lower surface of the running frame 10 so as to be detachable. 15,15
The right and left rubber bushes 16 and 16 are press-fitted respectively, and the pivot 17 is pressed into the left and right rubber bushes 16 and 16, and an equalizer including a pair of left and right equalizer plates 18 and 18 is provided at the center of the coaxial shaft 17.
The upper center of 19 is fixed, and front and rear lower wheel bearings 20 and 20 are fixed to the front and rear ends of the equalizer 19, respectively, and the front and rear lower wheel shafts 21 and 20 are respectively attached to the front and rear lower wheel bearings 20 and 20. A substantially bowl-shaped lower left and right wheel body 22, 22 is mounted on left and right ends of the front and rear lower wheel shafts 21, 21 via nuts 23, 23, respectively. A crawler 24 is wound around the outer periphery of the driving sprocket 11, the driven sprocket 12, the upper rolling wheel 13 and the lower rolling wheel 14, and the crawler 24 is driven by the power from the motor unit 3 via the driving sprocket 11. And tractor A
I want to run. In FIG. 2, reference numeral 25 denotes a projection protruding from the inner peripheral surface of the crawler 24. The left and right lower rolling wheel main bodies 22, 22 abutting on the left and right sides of the crawler 24 allow the crawler 24 to move in the left-right direction. The movement is restricted to prevent the crawler 24 from coming off. Reference numeral 26 denotes a bearing mounting bolt, 27 denotes a bearing height adjusting plate, 28 denotes a dust plug, and 29 denotes a retaining ring. With this configuration, even if one of the lower rolling wheels 14 is displaced by a small protrusion on the road surface or the like during traveling of the tractor A, the lower rolling wheel 14 is reduced to approximately 1/2 by the equalizer 19 and transmitted to the traveling portion frame 10. Therefore, the impact and the swing from the road surface can be reduced, and the riding comfort can be improved. In particular, the pivot 17 supporting the equalizer 19
Both ends of the left and right bearings 15,1 via rubber bushes 16,16
5, the tilting of the equalizer 19 to the left and right is effectively suppressed, and the crawler 24 can be prevented from coming off due to the tilting to the left and right. The equalizer 19 has a downward slope from the position above the pivot 17 at the center of the upper surface of the equalizer 19 toward the front and rear ends.
The central portion forms stopper portions s, s formed in a curved shape protruding upward. With this configuration, when the equalizer 19 is tilted, the stoppers s, s on the upper surface of the equalizer 19 abut on the lower surface of the traveling unit frame 10 so that the tilt of the equalizer 19 can be restricted. Since the left and right bearings 15, 15 can be attached and detached by inserting and removing the bearing mounting bolts 26, the rubber bushing can be used.
Since only 16,16 can be replaced, it is not necessary to replace the entire equalizer, which is economical. The tilting of the equalizer 19 is restricted by the reaction force of the rubber bushes 16, 16 in the radial direction with the contact points p between the stoppers s, s and the lower surface of the traveling frame 10 as fulcrums. However, the stoppers s, s
Is formed in a downwardly sloped shape from the position above the pivot 17 at the center of the upper surface of the equalizer 19 toward the front and rear ends, and furthermore, the central portion is formed in a curved shape protruding upward.
As the front-back inclination increases, the contact point p between the stopper portion s, s, which is the tilt fulcrum of the equalizer 19, and the traveling portion frame 10 is separated from the pivot 17, so that the relationship between the tilt angle of the equalizer 19 and the tilt regulating force. Becomes non-linear and calm,
In addition, it is possible to effectively control the tilt of the equalizer. According to the present invention, a left-right pivot is provided on the lower surface of the running frame, and a middle part of the equalizer extending in the front-rear direction is pivotally attached to the same pivot so that the equalizer is rotatable. In a crawler-type traveling device that pivotally supports front and rear lower rolling wheels that respectively roll the crawler inner surface at front and rear end portions, an equalizer is pivotally attached to the center of the pivot, and the left and right ends of the pivot are
By supporting the left and right bearings detachably mounted on the left and right sides of the lower surface of the running frame via the left and right rubber bushes, the pivot is supported by the rubber bushes arranged at both ends. In addition, the horizontal movement of the equalizer can be effectively suppressed to prevent the crawler from coming off. Further, since only the rubber bush can be replaced by attaching and detaching the left and right bearings, there is no need to replace the entire equalizer, which is economical. Further, since a stopper portion is formed on the upper surface of the equalizer to abut against the lower surface of the traveling portion frame and regulates the tilt of the equalizer, no member or mechanism for regulating the tilt of the equalizer is required. Can be easy. In addition, the tilting of the equalizer by the stopper is restricted by a reaction force due to radial elasticity of the rubber bush with the contact point between the stopper and the lower surface of the running frame as a fulcrum. Is formed in a downwardly sloped shape from the position above the pivot in the center of the upper surface of the equalizer toward the front and rear ends, and furthermore, as the equalizer's front and rear inclination becomes larger, the equalizer becomes larger as the center portion protrudes upward. Since the contact point between the stopper, which is the tilt fulcrum, and the traveling frame is separated from the pivot, the relationship between the tilt angle of the equalizer and the tilt restricting force becomes non-linear, and the tilt of the equalizer can be controlled gently and effectively. It can be carried out.
【図面の簡単な説明】
【図１】本発明に係るクローラ式走行装置の下部転輪支
持機構を具備する農業用トラクタの側面図。
【図２】図１におけるＩ−Ｉ線断面図。
【図３】下部転輪支持機構の側面図。
【図４】従来のイコライザ構造を示す側面図。
【図５】図４におけるII−II線断面図。
【符号の説明】
Ｄ 下部転輪支持機構
ｓ ストッパ部
１ クローラ式走行装置
10 走行部フレーム
14 下部転輪
15 軸受部
16 ゴムブッシュ
17 枢軸
19 イコライザ
24 クローラBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of an agricultural tractor provided with a lower wheel support mechanism of a crawler traveling device according to the present invention. FIG. 2 is a sectional view taken along line II in FIG. FIG. 3 is a side view of a lower wheel supporting mechanism. FIG. 4 is a side view showing a conventional equalizer structure. FIG. 5 is a sectional view taken along line II-II in FIG. [Description of References] D Lower wheel support mechanism s Stopper unit 1 Crawler traveling device 10 Running unit frame 14 Lower wheel 15 Bearing unit 16 Rubber bush 17 Axis 19 Equalizer 24 Crawler
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B62D 55/14 Continuation of front page (58) Field surveyed (Int. Cl. 7 , DB name) B62D 55/14
Claims (1)
枢軸(17)を設け、同枢軸(17)に前後方向に伸延したイコ
ライザ(19)の中途部を回動自在に枢着し、同イコライザ
(19)の前後端部にそれぞれクローラ(24)内面を転動する
前後下部転輪(14)(14)を軸支したクローラ式走行装置
(1)であって、 前記枢軸(17)の中央部にイコライザ(19)を枢着し、同枢
軸(17)の左右端部を、それぞれ左右ゴムブッシュ(16)(1
6)を介し、走行部フレーム(10)の下面左右側に着脱自在
に垂設した左右軸受部(15)(15)に支承せしめたクローラ
式走行装置の下部転輪支持機構において、 走行部フレーム(10)の下面と当接してイコライザ(19)の
傾動を規制するストッパ部(s)(s)を前記イコライザ(19)
の上面に形成するとともに、 前記ストッパ部(s)(s)は、前記イコライザ(19)上面中央
の枢軸(17)上方位置から前後端部に向かって下り勾配状
で、しかも、中央部を上方向に突出した湾曲状に形成
し、前記イコライザ(19)の前後傾斜が大きくなるにした
がって、前記ストッパ部(s)(s)と走行部フレーム(10)と
の当接点(p)を前記枢軸(17)から離隔させるべく構成し
た ことを特徴とするクローラ式走行装置の下部転輪支持
機構。(1) A horizontal pivot (17) is provided on the lower surface of the running frame (10), and the equalizer (19) extends in the front-rear direction on the pivot (17). The part is pivoted freely and the equalizer
A crawler-type traveling device in which front and rear lower rolling wheels (14) (14) that roll the inner surface of a crawler (24) at front and rear ends of (19), respectively.
(1) , an equalizer (19) is pivotally attached to the center of the pivot (17), and left and right ends of the pivot (17) are respectively connected to left and right rubber bushes (16) (1).
Through 6), in the lower track roller supporting mechanism of the left and right bearing portion freely and vertically detachably attached to the lower surface left side (15) (15) crawler type traveling device was allowed supported on the traveling unit frame (10), the traveling unit It comes into contact with the lower surface of the frame (10) and
Stopper part (s) (s) for restricting the tilting the equalizer (19)
The stoppers (s) and (s) are formed at the center of the upper surface of the equalizer (19).
(17) Downward slope from upper position to front and rear end
In addition, the central part is formed in a curved shape protruding upward.
Then, the equalizer (19) has a large inclination in the front-rear direction.
Accordingly, the stopper portion (s) (s) and the traveling portion frame (10)
The contact point (p) is separated from the pivot (17).
A lower wheel support mechanism for a crawler type traveling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23738394A JP3480995B2 (en) | 1994-09-30 | 1994-09-30 | Lower roller support mechanism for crawler type traveling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23738394A JP3480995B2 (en) | 1994-09-30 | 1994-09-30 | Lower roller support mechanism for crawler type traveling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0899655A JPH0899655A (en) | 1996-04-16 |
| JP3480995B2 true JP3480995B2 (en) | 2003-12-22 |
Family
ID=17014580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23738394A Expired - Fee Related JP3480995B2 (en) | 1994-09-30 | 1994-09-30 | Lower roller support mechanism for crawler type traveling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3480995B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007056584A (en) * | 2005-08-25 | 2007-03-08 | Tonneru No Rental:Kk | Rubber crawler type erector |
| JP5243727B2 (en) * | 2007-04-10 | 2013-07-24 | 住友ゴム工業株式会社 | Crawler type traveling device |
| CN103935411A (en) * | 2014-04-03 | 2014-07-23 | 芦维强 | Track wheel assembly |
| CN103935415B (en) * | 2014-04-03 | 2016-08-03 | 哈尔滨博通汽车部件制造有限公司 | Snowmobile |
| CN104608835A (en) * | 2015-01-19 | 2015-05-13 | 华南理工大学 | Combined drive type movement mechanism suitable for paddy field |
| CN104973154A (en) * | 2015-07-16 | 2015-10-14 | 湖南中天龙舟农机有限公司 | Buffer driving wheel for crawler unit |
-
1994
- 1994-09-30 JP JP23738394A patent/JP3480995B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0899655A (en) | 1996-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7328760B2 (en) | Semi tracked-type working vehicle | |
| US5367864A (en) | Riding lawn mower | |
| US8636326B2 (en) | Crawler travel unit | |
| US7497530B2 (en) | Traction assembly for a vehicle | |
| US4311204A (en) | Motor vehicle with resilient cushions between its body and main frame structures | |
| WO2013001845A1 (en) | Working vehicle | |
| JP3480995B2 (en) | Lower roller support mechanism for crawler type traveling device | |
| JP4888189B2 (en) | Suspension device | |
| JP3956705B2 (en) | Braking device for saddle riding type rough terrain vehicle | |
| JP7013001B2 (en) | Small vehicle | |
| JP3560893B2 (en) | Crawler traveling device | |
| JP5763988B2 (en) | Work vehicle | |
| WO2020075404A1 (en) | Irregular ground traveling vehicle | |
| CN114514169B (en) | Electric mobile device | |
| JP5763989B2 (en) | Work vehicle | |
| JP5826589B2 (en) | Work vehicle | |
| JP5806585B2 (en) | Work vehicle | |
| JP3747547B2 (en) | Electric vehicle suspension system | |
| JP3863071B2 (en) | Crawler type traveling device | |
| JP7057735B2 (en) | Crawler type traveling device and work vehicle | |
| JP5815307B2 (en) | Work vehicle | |
| JP2666481B2 (en) | Forklift truck rear axle suspension | |
| JP2501452Y2 (en) | Crawler traveling device for mobile work equipment | |
| JP3719529B2 (en) | Crawler type traveling device | |
| JP2003226269A (en) | Tractor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081010 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091010 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091010 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101010 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111010 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111010 Year of fee payment: 8 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313532 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111010 Year of fee payment: 8 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111010 Year of fee payment: 8 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111010 Year of fee payment: 8 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121010 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121010 Year of fee payment: 9 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121010 Year of fee payment: 9 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131010 Year of fee payment: 10 |
|
| S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131010 Year of fee payment: 10 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |