JPH03224876A - Crawler travel device for agricultural work vehicle - Google Patents

Crawler travel device for agricultural work vehicle

Info

Publication number
JPH03224876A
JPH03224876A JP2027390A JP2027390A JPH03224876A JP H03224876 A JPH03224876 A JP H03224876A JP 2027390 A JP2027390 A JP 2027390A JP 2027390 A JP2027390 A JP 2027390A JP H03224876 A JPH03224876 A JP H03224876A
Authority
JP
Japan
Prior art keywords
frame
support frame
hydraulic cylinder
crawler
machine body
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.)
Granted
Application number
JP2027390A
Other languages
Japanese (ja)
Other versions
JP2510744B2 (en
Inventor
Mikio Okada
幹夫 岡田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP2020273A priority Critical patent/JP2510744B2/en
Publication of JPH03224876A publication Critical patent/JPH03224876A/en
Application granted granted Critical
Publication of JP2510744B2 publication Critical patent/JP2510744B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

PURPOSE:To realize the smooth horizontal ascent/descent and front/rear inclination motion drive of a crawler ground contacting portion, by connecting a track frame with a machine body side support frame through a pair of front and rear swing links, and supporting the support frame at a machine body frame swingably around the pivotal support point of the front swing link. CONSTITUTION:At a crawler travel device 1 which is constituted by winding a crawler belt 5 over a crawler drive wheel body 2 and a crawler tension wheel body 3 and a plurality of ground contacting rolling wheels 4 provided between the wheel bodies 2 and 3, a track frame 8 supporting the wheel body 3 and rolling wheels 4, and a support frame 9 on a machine body side are connected in a pivotal support point way through a pair of front and rear swing links 10a,10b. And the 1st hydraulic cylinder 13 is interveniently provided between a machine body frame 6 and an arm 12 connectingly provided toward the upper part from the support frame 9 side pivotal support point of the swing link 10b. The support frame 9 is supported by the swingable machine body frame 6 around the pivotal support point X of the swing link 10a, and the 2nd hydraulic cylinder 16 is interveniently provided between both frames 6, 9.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、農作業車用クローラ走行装置に関し、詳しく
は、走行機体に対してクローラ接地部が水平姿勢のまま
相対上下動自在並びに後部側が前部軸芯を中心として相
対上下揺動自在となるよう構成した農作業車用クローラ
走行装置に関する。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a crawler traveling device for an agricultural vehicle, and more specifically, the crawler grounding portion can be vertically movable relative to the traveling body while remaining in a horizontal position, and the rear side is vertically movable. The present invention relates to a crawler traveling device for an agricultural vehicle configured to be able to swing vertically relative to each other about a partial axis.

〔従来の技術〕[Conventional technology]

上記クローラ走行装置において、従来では、例えば第4
図に示すような構造が考えられた。
In the above crawler traveling device, conventionally, for example, the fourth
The structure shown in the figure was considered.

つまり、接地転輪(30)群を支持するトラックフレー
ム(31)と機体側支持フレーム(32)とを前後一対
の揺動リンク(33a) 、 (33b)を介して水平
昇降自在に連結するとともに、昇降駆動用の第1油圧シ
リンダ(34)を前記支持フレーム(32)に連結支持
させ、前記支持フレーム(32)を前部支点(P)周り
で揺動自在に機体フレーム(35)に枢支し、支持フレ
ーム(32)の後部と後方上方位置の機体フレーム(3
5)とを第2油圧シリンダ(36)を介して枢支連結す
る構造である。
In other words, the track frame (31) that supports the group of ground contact wheels (30) and the fuselage side support frame (32) are connected via a pair of front and rear swing links (33a) and (33b) so as to be able to move horizontally up and down. , a first hydraulic cylinder (34) for driving up and down is connected and supported by the support frame (32), and the support frame (32) is pivoted to the fuselage frame (35) so as to be swingable around the front fulcrum (P). support, the rear of the support frame (32) and the fuselage frame (3) at the rear upper position.
5) are pivotally connected via the second hydraulic cylinder (36).

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上記従来構造は、トラックフレームの昇降駆動と後部上
下揺動駆動とを各別に円滑に作動するよう構成したもの
である。
The above-mentioned conventional structure is configured to smoothly operate the raising/lowering drive of the truck frame and the rear vertical swinging drive separately.

即ち、地面の凹凸に起因する機体の左右傾きを、クロー
ラ接地部の相対高さを変更することで是正できるように
するとともに、例えば湿田等を走行すると機体が後部沈
み込み状態で走行する前後傾斜姿勢となるのを上記後部
揺動駆動で修正できるようにしたものである。
In other words, by changing the relative height of the crawler contact area, it is possible to correct the horizontal tilt of the aircraft caused by irregularities in the ground. The posture can be corrected by the rear rocking drive.

ところが、上記従来構造によると、例えばコンバイン等
の大重量の農作業機であれば、大きな機体重量が支持フ
レームの前部支点及び第2油圧シリンダの連結支点の2
箇所でのみ機体フレームに支持される構造であるから、
全荷重が上記2箇所に集中することになって、当該部分
の支持強度を必要以上に大にしなければならない等、改
善の余地があった。
However, according to the above-mentioned conventional structure, for example, in the case of a heavy agricultural machine such as a combine harvester, the weight of the large machine is distributed between the front fulcrum of the support frame and the connection fulcrum of the second hydraulic cylinder.
Because the structure is supported by the fuselage frame only at certain points,
Since the entire load was concentrated on the two locations mentioned above, there was room for improvement, such as the need to increase the support strength of those locations more than necessary.

本発明は、合理的な構造改良で上記不具合点を解消する
ことを目的としている。
The present invention aims to solve the above-mentioned problems by rational structural improvement.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の特徴構成は、接地転輪群を支承するトラックフ
レームと機体側の支持フレームとを前後一対の揺動リン
クを介して枢支連結するとともに、後部側の揺動リンク
の前記支持フレーム側枢支点から上方に向けて一体的に
延設したアームと機体フレームとの間に第1油圧シリン
ダを介装し、かつ、前記支持フレームを前部側揺動リン
クの枢支点の周りで後部側が上下揺動自在となるよう機
体フレームに支持させ、この支持フレームの後部と機体
フレームとの間に、その伸縮作動に伴って支持フレーム
及びトラックフレームの後部を共に前記枢支点周りで揺
動駆動する第2油圧シリンダを枢支連結し、前記アーム
と前記第1油圧シリンダとの間を、該第1油圧シリンダ
の作動方向に沿う長孔を介して枢支連結してある点にあ
る。
A characteristic configuration of the present invention is that a track frame supporting a group of ground contact wheels and a support frame on the fuselage side are pivotally connected via a pair of front and rear swing links, and the support frame side of the rear swing link is A first hydraulic cylinder is interposed between the arm integrally extending upward from the pivot point and the fuselage frame, and the support frame is connected to the rear side around the pivot point of the front swing link. It is supported by the body frame so as to be able to swing up and down, and between the rear part of the support frame and the body frame, the rear part of the support frame and the track frame are both driven to swing around the pivot point as the support frame expands and contracts. The second hydraulic cylinder is pivotally connected, and the arm and the first hydraulic cylinder are pivotally connected via a long hole extending in the operating direction of the first hydraulic cylinder.

〔作 用〕[For production]

第2油圧シリンダを伸縮固定した状態で第1油圧シリン
ダを伸縮駆動させるとトラックフレームが水平姿勢で昇
降駆動される。このとき、前記アームと第1油圧シリン
ダとの連結部分においては、アームは常にシリンダ側に
向けて機体荷重が掛かっているので、長孔の一端に接当
連係する状態を維持する。
When the first hydraulic cylinder is driven to extend and contract while the second hydraulic cylinder is fixedly extended and contracted, the truck frame is driven to move up and down in a horizontal position. At this time, at the connecting portion between the arm and the first hydraulic cylinder, the arm maintains a state in which it abuts and connects with one end of the elongated hole, since the arm is always subjected to a body load toward the cylinder side.

又、第1油圧シリンダを伸縮固定し、第2油圧シリンダ
を伸縮駆動させると、トラックフレームと支持フレーム
とが一体的に前部支点周りで下方揺動駆動され、機体の
前後傾斜が修正される。
Furthermore, when the first hydraulic cylinder is fixed to expand and contract and the second hydraulic cylinder is driven to expand and contract, the track frame and the support frame are integrally driven to swing downward around the front fulcrum, correcting the longitudinal inclination of the aircraft. .

このとき、前部支点と第1油圧シリンダの連結支点とが
異なる結果、異なる揺動軌跡を描くことになるが、前記
長孔の範囲に亘って融通があるから、こじれない状態で
円滑に作動する。
At this time, since the front fulcrum and the connection fulcrum of the first hydraulic cylinder are different, different rocking trajectories will be drawn, but since there is flexibility over the range of the elongated hole, smooth operation can be achieved without straining. do.

しかも、機体荷重は支持フレームの前部支点、第2油圧
シリンダの連結支点のみならず第1油圧シリンダの連結
支点においても分散して支持されることになる。
Furthermore, the weight of the aircraft is distributed and supported not only at the front fulcrum of the support frame and the connecting fulcrum of the second hydraulic cylinder, but also at the connecting fulcrum of the first hydraulic cylinder.

〔発明の効果〕〔Effect of the invention〕

その結果、本発明によれば、クローラ接地部の水平昇降
駆動並びに前後傾動駆動が円滑に行えるものでありなが
ら、機体荷重が分散され支持連結部の構造を簡素化でき
るものとなった。
As a result, according to the present invention, it is possible to smoothly drive the crawler ground-contacting portion horizontally up and down and to tilt it back and forth, while the body load is distributed and the structure of the support connection portion can be simplified.

〔実施例〕〔Example〕

以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.

第1図ないし第3図に本発明に係るコンバイン用クロー
ラ走行装置(1)を示している。このクローラ走行装置
(1)は、前端部のクローラ駆動輪体(2)後端部のク
ローラ緊張用輪体(3)及び両輪体(2) 、 (3)
間に前後の並設した複数の接地転輪(4)群夫々に亘っ
てクローラベルト(5)を巻回して成り、機体(図示せ
ず)側から前記駆動用輪体(2)に動力が供給され、ク
ローラベルト(5)を回動駆動して走行するよう構成し
てある。
1 to 3 show a crawler traveling device (1) for a combine harvester according to the present invention. This crawler traveling device (1) includes a crawler driving wheel body (2) at the front end, a crawler tensioning wheel body (3) at the rear end, and both wheel bodies (2), (3).
A crawler belt (5) is wound around each of a plurality of groups of ground contact wheels (4) arranged in parallel in the front and rear in between, and power is transmitted from the aircraft body (not shown) to the drive wheel (2). The crawler belt (5) is rotated to drive the crawler belt (5).

前記駆動用輪体(2)は機体フレーム(6)から延設し
た軸受部(7)に支持してあり、緊張用輪体(3)及び
接地転輪(4)群は夫々、クローラベルト(5)の内周
側において前後方向に沿って配設されるトラックフレー
ム(8)に支承してある。
The drive wheels (2) are supported by bearings (7) extending from the fuselage frame (6), and the tension wheels (3) and the ground contact wheels (4) are each supported by crawler belts ( 5) is supported by a track frame (8) disposed along the front-rear direction on the inner peripheral side.

このトラックフレーム(8)は機体側の支持フレーム(
9)に対して水平姿勢のままで昇降駆動自在に連結支持
してある。
This track frame (8) is the support frame on the aircraft side (
9), it is connected and supported so that it can be moved up and down while remaining in a horizontal position.

詳述すると、トラックフレーム(8)を前後−対の揺動
アーム(10a) 、 (10b)を介して支持フレー
ム(9)に枢支連結して平行回連リンク機構を構成する
とともに、後部側揺動リンク(10b)の支持フレーム
(9)側枢支軸(11)から駆動アーム(12)を一体
回動自在に上方に延設し、この駆動アーム(12)の揺
動端部と機体フレーム(6)との間に前後方向に沿って
第1油圧シリンダ(13)を枢支連結してある。そして
、この第1油圧シリンダ(13)を伸縮駆動することで
、支持フレーム(9)に対してトラックフレーム(8)
を水平姿勢で昇降駆動するよう構成してある。
To be more specific, the track frame (8) is pivotally connected to the support frame (9) via a pair of front and rear swing arms (10a) and (10b) to form a parallel rotation link mechanism. A drive arm (12) is integrally rotatably extended upward from the support frame (9) side pivot shaft (11) of the swing link (10b), and the swing end of the drive arm (12) and the fuselage A first hydraulic cylinder (13) is pivotally connected to the frame (6) along the front-rear direction. By telescopically driving this first hydraulic cylinder (13), the track frame (8) is moved relative to the support frame (9).
It is configured to be driven up and down in a horizontal position.

尚、前後揺動リンク(10a) 、 (10b)はロッ
ド(14)を介して連動連結してあるとともに、前部の
揺動リンク(10a) とトラックフレーム(8)との
間には支点誤差吸収用の補助リンク(8a)を介在して
ある。
Note that the front and rear swing links (10a) and (10b) are interlocked and connected via the rod (14), and there is a fulcrum error between the front swing link (10a) and the truck frame (8). An auxiliary link (8a) for absorption is provided.

前記支持フレーム(9)は前部側揺動リンク(10a)
の枢支点(X)の周りで後部側が上下揺動自在となるよ
う機体フレーム(6)に支持してある。つまり前部側揺
動リンク(10a)の支持フレーム(9)側の枢支軸(
15)が支持フレーム(9)及び機体フレーム(6)を
貫通する状態で相対回動自在に支持されており、支持フ
レーム(9)はこの枢支軸(15)の軸芯(X)周りで
上下揺動自在となるよう構成してある。
The support frame (9) has a front side swing link (10a).
The rear side is supported by the fuselage frame (6) so that it can swing vertically around the pivot point (X). In other words, the pivot shaft (
15) is supported so as to be relatively rotatable while penetrating the support frame (9) and the fuselage frame (6), and the support frame (9) rotates around the axis (X) of this pivot shaft (15). It is configured to be able to swing up and down.

又、支持フレーム(9)の後部と機体フレーム(6)と
の間に、その伸縮作動に伴って支持フレーム(9)及び
トラックフレーム(8)の後部を共に前記枢支点(X)
周りで上下揺動駆動する第2油圧シリンダ(16)を枢
支連結してある。尚、トラックフレーム(8)の機体内
方側面には、トラックフレーム(8)の対機体相対上昇
時に、各揺動リンク(10a) 、 (10b)の支持
フレーム(9)側枢支ボス部(17) 、 (17)に
接当して上限規制を行う接当規制部(1B) 、 (1
B)を形成してある。前記第2油圧シリンダ(16)の
伸長駆動する際には前記接当規制部(18) 、 (1
B)が各枢支ボス部(17) 、 (17)に接当した
状態となる。
Also, between the rear part of the support frame (9) and the fuselage frame (6), the rear parts of the support frame (9) and the track frame (8) are connected to the pivot point (X) as the support frame (9) and the truck frame (8) expand and contract.
A second hydraulic cylinder (16), which is driven to swing vertically around the cylinder, is pivotally connected thereto. In addition, on the inside side of the truck frame (8), when the truck frame (8) is raised relative to the aircraft, there is a pivot boss portion (on the support frame (9) side) of each swing link (10a), (10b). 17), (17) and performs upper limit regulation (1B), (1
B) is formed. When driving the second hydraulic cylinder (16) to extend, the contact regulating portions (18), (1
B) comes into contact with each pivot boss part (17), (17).

前記駆動アーム(12)と第1油圧シリンダ(13)と
の間は、該油圧シリンダ(1)の作動方向に沿う長孔(
19)を介して枢支連結してある。このように構成する
と、第1油圧シリンダ(13)の伸縮駆動時、つまりト
ラックフレーム(8)の水平姿勢時には、第1油圧シリ
ンダ(13)側の連結ピン(20)は前記長孔(19)
の後端側に位置し、上記したような第2油圧シリンダ(
16)の伸長駆動時には、支持フレーム(9)と第1油
圧シリンダ(13)との相対移動を連結ピン(20)が
長孔(19)の前部側に退避することにより許容し、円
滑な駆動が行えることになる。
Between the drive arm (12) and the first hydraulic cylinder (13) is a long hole (
19). With this configuration, when the first hydraulic cylinder (13) is driven to expand and contract, that is, when the truck frame (8) is in a horizontal position, the connecting pin (20) on the first hydraulic cylinder (13) side is connected to the elongated hole (19).
Located on the rear end side, the second hydraulic cylinder (
16), the relative movement between the support frame (9) and the first hydraulic cylinder (13) is allowed by the connecting pin (20) retracting to the front side of the elongated hole (19), allowing smooth movement. It will be possible to drive.

尚、支持フレーム(9)の機体内方側上端と機体フレー
ム(6)との間をロッド(21)で枢支連結し、このロ
ッド(21)には第1油圧シリンダ(13)によるトラ
ックフレーム(8)の昇降駆動の上限位置及び下限位置
を設定するためのリミットスイッチ(sh+)、 (S
Wz)を取付けである。又、第2油圧シリンダ(16)
の伸縮時には、支持フレーム(9)の上端が機体フレー
ム(6)に接当して機体荷重を支持するよう構成してあ
る。
The upper end of the support frame (9) inward of the fuselage and the fuselage frame (6) are pivotally connected by a rod (21), and this rod (21) is connected to the track frame by the first hydraulic cylinder (13). (8) Limit switch (sh+) for setting the upper and lower limit positions of the lifting drive, (S
Wz) is installed. Also, the second hydraulic cylinder (16)
When expanding and contracting, the upper end of the support frame (9) comes into contact with the body frame (6) to support the body load.

尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。
Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

【図面の簡単な説明】[Brief explanation of drawings]

第1図ないし第3図は本発明に係る農作業車用クローラ
走行装置の実施例を示し、第1図は水平姿勢状態の側面
図、第2図は後部下方揺動時の側面図、第3図は平面図
である。そして、第4図は従来例の側面図である。 (4)・・・・・・接地転輪、(6)・・・・・・機体
フレーム、(8)・・・・・・トラックフレーム、(9
)・・・・・・支持フレーム、 (10a) 、 (1
0b)・・・・・・揺動リンク、(12)・・・・・・
アーム、 (13) 、 (16)・・・・・・油圧シ
リンダ、(19)・・・・・・長孔。  代理人弁理士
 北 村  修0
1 to 3 show an embodiment of the crawler traveling device for agricultural vehicles according to the present invention, in which FIG. 1 is a side view in a horizontal position, FIG. 2 is a side view when the rear is swinging downward, and FIG. The figure is a plan view. FIG. 4 is a side view of the conventional example. (4)...Grounding wheel, (6)...Airframe frame, (8)...Track frame, (9
)...Support frame, (10a), (1
0b)... Swinging link, (12)...
Arm, (13), (16)...hydraulic cylinder, (19)...long hole. Representative Patent Attorney Osamu Kitamura0

Claims (1)

【特許請求の範囲】[Claims]  接地転輪(4)群を支承するトラックフレーム(8)
と機体側の支持フレーム(9)とを前後一対の揺動リン
ク(10a)、(10b)を介して枢支連結するととも
に、後部側の揺動リンク(10b)の前記支持フレーム
(9)側枢支点から上方に向けて一体的に延設したアー
ム(12)と機体フレーム(6)との間に第1油圧シリ
ンダ(13)を介装し、かつ、前記支持フレーム(9)
を前部側揺動リンク(10a)の枢支点(X)の周りで
後部側が上下揺動自在となるよう機体フレーム(6)に
支持させ、この支持フレーム(9)の後部と機体フレー
ム(6)との間に、その伸縮作動に伴って支持フレーム
(9)及びトラックフレーム(8)の後部を共に前記枢
支点(X)周りで揺動駆動する第2油圧シリンダ(16
)を枢支連結し、前記アーム(12)と前記第1油圧シ
リンダ(13)との間を、該第1油圧シリンダ(13)
の作動方向に沿う長孔(19)を介して枢支連結してあ
る農作業車用クローラ走行装置。
Track frame (8) supporting the ground contact wheels (4) group
and the support frame (9) on the fuselage side are pivotally connected via a pair of front and rear swing links (10a) and (10b), and the support frame (9) side of the rear swing link (10b) A first hydraulic cylinder (13) is interposed between the arm (12) integrally extending upward from the pivot point and the fuselage frame (6), and the support frame (9)
is supported by the fuselage frame (6) so that the rear side can freely swing up and down around the pivot point (X) of the front side swing link (10a), and the rear of this support frame (9) and the fuselage frame (6) ) between the second hydraulic cylinder (16
) between the arm (12) and the first hydraulic cylinder (13).
A crawler traveling device for an agricultural vehicle which is pivotally connected via a long hole (19) along the operating direction.
JP2020273A 1990-01-29 1990-01-29 Crawler traveling device for agricultural vehicles Expired - Lifetime JP2510744B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020273A JP2510744B2 (en) 1990-01-29 1990-01-29 Crawler traveling device for agricultural vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020273A JP2510744B2 (en) 1990-01-29 1990-01-29 Crawler traveling device for agricultural vehicles

Publications (2)

Publication Number Publication Date
JPH03224876A true JPH03224876A (en) 1991-10-03
JP2510744B2 JP2510744B2 (en) 1996-06-26

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6604796B2 (en) * 2001-05-16 2003-08-12 Jarraff Industries Inc. Track tensioning biasing system for a tracked vehicle
US6641235B2 (en) * 2001-05-16 2003-11-04 Jarraff Industries Inc. Pivoting track tensioning system for a tracked vehicle
JP2007331687A (en) * 2006-06-19 2007-12-27 Mitsubishi Agricult Mach Co Ltd Crawler unit
US10384732B2 (en) 2011-08-31 2019-08-20 Prinoth Ltd. Tracked vehicle
CN115432080A (en) * 2022-09-05 2022-12-06 苏州瑞奇安机电科技有限公司 Large-gradient climbing chassis, forest rescue vehicle and fire-extinguishing robot
GB2575047B (en) * 2018-06-26 2023-02-08 Turner Development Ltd Improved track driven work machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822384U (en) * 1981-08-06 1983-02-12 株式会社クボタ combine
JPH026688U (en) * 1988-06-28 1990-01-17

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5822384U (en) * 1981-08-06 1983-02-12 株式会社クボタ combine
JPH026688U (en) * 1988-06-28 1990-01-17

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6604796B2 (en) * 2001-05-16 2003-08-12 Jarraff Industries Inc. Track tensioning biasing system for a tracked vehicle
US6641235B2 (en) * 2001-05-16 2003-11-04 Jarraff Industries Inc. Pivoting track tensioning system for a tracked vehicle
JP2007331687A (en) * 2006-06-19 2007-12-27 Mitsubishi Agricult Mach Co Ltd Crawler unit
US10384732B2 (en) 2011-08-31 2019-08-20 Prinoth Ltd. Tracked vehicle
US11142266B2 (en) 2011-08-31 2021-10-12 Prinoth Ltd. Tracked vehicle
GB2575047B (en) * 2018-06-26 2023-02-08 Turner Development Ltd Improved track driven work machine
US11753094B2 (en) 2018-06-26 2023-09-12 Turner Development Limited Track driven work machine
CN115432080A (en) * 2022-09-05 2022-12-06 苏州瑞奇安机电科技有限公司 Large-gradient climbing chassis, forest rescue vehicle and fire-extinguishing robot

Also Published As

Publication number Publication date
JP2510744B2 (en) 1996-06-26

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