JPH1045061A - Suspension device of crawler belt type vehicle - Google Patents

Suspension device of crawler belt type vehicle

Info

Publication number
JPH1045061A
JPH1045061A JP20079196A JP20079196A JPH1045061A JP H1045061 A JPH1045061 A JP H1045061A JP 20079196 A JP20079196 A JP 20079196A JP 20079196 A JP20079196 A JP 20079196A JP H1045061 A JPH1045061 A JP H1045061A
Authority
JP
Japan
Prior art keywords
wheel
vehicle
crawler belt
vehicle body
sub
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
JP20079196A
Other languages
Japanese (ja)
Other versions
JP3585196B2 (en
Inventor
Takeshi Yoshigasaki
剛 吉ケ▲崎▼
Naoki Matsumoto
直樹 松本
Yasutomo Abe
靖朋 阿部
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP20079196A priority Critical patent/JP3585196B2/en
Priority to US08/893,831 priority patent/US5975226A/en
Priority to CA002210818A priority patent/CA2210818C/en
Priority to CA002476482A priority patent/CA2476482C/en
Priority to IDP972625A priority patent/ID19367A/en
Priority to DE69736787T priority patent/DE69736787T2/en
Priority to EP97305735A priority patent/EP0823369B1/en
Priority to DE69722683T priority patent/DE69722683T2/en
Priority to EP01101579A priority patent/EP1106487B1/en
Priority to EP01101575A priority patent/EP1097859B1/en
Priority to DE69719635T priority patent/DE69719635T2/en
Priority to CN97115489A priority patent/CN1088667C/en
Priority to EP01101574A priority patent/EP1097858B1/en
Priority to DE69738303T priority patent/DE69738303T2/en
Publication of JPH1045061A publication Critical patent/JPH1045061A/en
Priority to US09/354,472 priority patent/US6155363A/en
Application granted granted Critical
Publication of JP3585196B2 publication Critical patent/JP3585196B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To prevent the center of gravity of a vehicle body from moving in the cross direction of the vehicle even if the vehicle is traveling across a slope so as to provide good stability to maintain the weight balance of the vehicle body for stabilization of controllability by mounting rear wheels in such a way that they are movable relative to the vehicle body only in the vertical direction and not in the cross direction of the vehicle. SOLUTION: In a half-crawler vehicle, a swing arm 61 is extended backward from the vehicle body 4 in such a way that it can rock vertically, with a rear- wheel drive shaft 54 mounted on the end of the swing arm. A pair of sub beams 63, 63 are attached at their bases to the end of the swing arm in such a way that they are extended forward and capable of rocking vertically, with intermediate-wheel support shafts 66, 66 mounted on the ends of the sub beams. Intermediate wheels are mounted on the intermediate wheel support shafts, and rear wheels as driving wheels are mounted on rear-wheel drive shafts, with the intermediate and rear wheels mounted in such a way that they are movable relative to the vehicle body only in the vertical direction and not in the cross direction of the vehicle.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、前輪をタイヤ、後
輪をクローラとしたクローラベルト式車両(いわゆる、
ハーフクローラ車)の改良に関する。
The present invention relates to a crawler belt type vehicle having a front wheel as a tire and a rear wheel as a crawler.
Half-crawler vehicle).

【0002】[0002]

【従来の技術】従来、ハーフクローラ車として、例えば
特開昭59−164270号公報「履帯を有する四輪駆
動車」の技術がある。上記技術は、その公報の第1図に
よれば、四輪駆動車2(番号は公報に記載されたものを
引用した。以下同じ。)の車体前部に前輪3を取付け、
車体後部にタイヤ付き後輪4及びタイヤ付き遊動輪5を
取付け、これら後輪4及び遊動輪5にゴム製の履帯6を
掛け渡したものである。
2. Description of the Related Art Conventionally, as a half-crawler vehicle, for example, there is a technology disclosed in Japanese Patent Application Laid-Open No. Sho 59-164270 entitled "Four-wheel drive vehicle having crawler tracks". According to FIG. 1 of the publication, a front wheel 3 is attached to a front portion of a vehicle body of a four-wheel drive vehicle 2 (the numbers are cited in the publication. The same applies hereinafter).
A rear wheel 4 with a tire and an idle wheel 5 with a tire are mounted on the rear part of the vehicle body, and a rubber crawler belt 6 is stretched over the rear wheel 4 and the idle wheel 5.

【0003】[0003]

【発明が解決しようとする課題】ところで、このような
一般のハーフクローラ車は、車体と車輪との間をスプリ
ング、ダンパ等の懸架装置で連結している。このような
ハーフクローラ車が斜面を横切って走行した場合、すな
わち、車体を左右に傾けた場合に、前記懸架装置より上
の部分が谷側へ移動する。このため、車体の重量バラン
スが偏り、操縦性に影響がでる。
In such a general half-crawler vehicle, the vehicle body and the wheels are connected by a suspension device such as a spring or a damper. When such a half-crawler vehicle travels across a slope, that is, when the vehicle body is tilted left and right, the portion above the suspension device moves to the valley side. For this reason, the weight balance of the vehicle body is biased, and the maneuverability is affected.

【0004】また、一般に、クローラベルトは、サイド
ドラッグ抵抗(横滑り抵抗)が大きいので、サイドスリ
ップが発生しにくい。サイドドラッグ抵抗は、ハーフク
ローラ車を旋回した際のブレーキ要因となり、ハーフク
ローラ車の旋回性を低下させる(前輪で発生した旋回モ
ーメントにとって、ブレーキ要因となる。)。しかし、
ハーフクローラ車であっても、旋回性は高い方がよい。
In general, a crawler belt has a large side drag resistance (side slip resistance), so that a side slip hardly occurs. The side drag resistance is a braking factor when turning the half crawler wheel, and lowers the turning performance of the half crawler wheel (it is a braking factor for the turning moment generated at the front wheels). But,
Even if it is a half crawler vehicle, it is better that the turning performance is high.

【0005】そこで本発明の目的は、(1)斜面での車
体の安定性を高めることで、操縦性が良いハーフクロー
ラ車を提供すること、(2)旋回性を高めたハーフクロ
ーラ車を提供することにある。
Accordingly, an object of the present invention is to provide (1) a half-crawler vehicle with good maneuverability by increasing the stability of the vehicle body on a slope, and (2) to provide a half-crawler vehicle with improved turning performance. Is to do.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
の請求項1は、車体前部に空気入りタイヤ付き前輪を取
付け、車体後部にリヤ懸架装置を介して中間輪及び後輪
を取付け、これら中間輪及び後輪にクローラベルトを掛
け渡したクローラベルト式車両において、車体から後方
へスイングアームを上下揺動可能に延出し、このスイン
グアームの先端部に、後輪用駆動軸を取付けるととも
に、前方へ延出させ且つ上下揺動可能に1対のサブビー
ムの基部を取付け、これらサブビームの先端部に中間輪
用支軸を取付け、これら中間輪用支軸に中間輪を取付
け、前記後輪用駆動軸に駆動輪としての後輪を取付け、
これら中間輪及び後輪を、前記車体に対して上下動のみ
可能で車幅方向に移動不能に取付けたことを特徴とす
る。
According to a first aspect of the present invention, a front wheel with a pneumatic tire is mounted on a front portion of a vehicle body, and an intermediate wheel and a rear wheel are mounted on a rear portion of the vehicle body via a rear suspension. In a crawler belt type vehicle in which a crawler belt is stretched around the middle wheel and the rear wheel, a swing arm extends rearward from the vehicle body to be able to swing up and down, and a drive shaft for a rear wheel is attached to a tip portion of the swing arm. The base of a pair of sub-beams extending forward and swinging up and down, mounting a support for an intermediate wheel to the tip of these sub-beams, mounting an intermediate wheel to the support for the intermediate wheel, The rear wheel as a drive wheel to the drive shaft for
The intermediate wheel and the rear wheel are mounted so that they can move only up and down with respect to the vehicle body and cannot move in the vehicle width direction.

【0007】(1)後輪を、車体に対して上下動のみ可
能で車幅方向に移動不能に取付けたので、斜面を横切っ
て走行した場合でも、車体の重心は車幅方向に移動しな
い。そのため、車体の重量バランスが偏らず安定性が良
く、操縦性に影響がでない。
(1) Since the rear wheels are mounted so that they can only move up and down with respect to the vehicle body and cannot move in the vehicle width direction, the center of gravity of the vehicle body does not move in the vehicle width direction even when traveling across a slope. Therefore, the weight balance of the vehicle body is not biased, the stability is good, and the maneuverability is not affected.

【0008】(2)後輪を、車体に対して上下動のみ可
能で車幅方向に移動不能に取付けたので、クローラベル
ト式車両の旋回時に発生する横向加速度(一般に「横
G」という。)によって、クローラベルトにサイドドラ
ッグ力(横滑り力)が発生する。その結果、クローラベ
ルトにサイドスリップが発生しやすい。このため、サイ
ドスリップを積極的に利用することができるので、旋回
性を高めることができる。
(2) Since the rear wheels are mounted so that they can only move up and down with respect to the vehicle body and cannot move in the vehicle width direction, the lateral acceleration generated when the crawler belt type vehicle turns (generally referred to as "lateral G"). As a result, a side drag force (side slip force) is generated on the crawler belt. As a result, a side slip easily occurs in the crawler belt. For this reason, since side slip can be positively used, turning performance can be improved.

【0009】(3)スイングアームの先端部に1対のサ
ブビームを上下揺動可能に取付け、これらのサブビーム
を前方に延出し、その先端部に中間輪用支軸を取付け、
これら中間輪用支軸に中間輪を取付けたので、1対の中
間輪は互いに独立して上下動可能であり、路面の凹凸に
対応して円滑に上下動することができる。このため、凹
凸の多い路面でクローラベルト式車両を走行した場合
に、各中間輪が上下動するので、車体は緩慢に上下動す
ることになる。従って、路面追従性が良いので乗り心地
が良く、また、車体に対して、左右の後輪を同時に上下
動可能に取付けた場合であっても、車体の急激な上下動
を抑制できる。
(3) A pair of sub-beams are attached to the tip of the swing arm so as to be able to swing up and down, these sub-beams are extended forward, and an intermediate wheel support shaft is attached to the tip.
Since the intermediate wheels are mounted on the intermediate wheel support shafts, the pair of intermediate wheels can move up and down independently of each other, and can move up and down smoothly in response to unevenness of the road surface. For this reason, when the crawler belt type vehicle travels on a road surface having a lot of unevenness, each intermediate wheel moves up and down, so that the vehicle body slowly moves up and down. Therefore, the vehicle has good road following ability, so that the ride comfort is good. Also, even when the left and right rear wheels are attached to the vehicle body so as to be able to move up and down at the same time, it is possible to suppress sudden vertical movement of the vehicle body.

【0010】(4)後輪を駆動輪としたので、クローラ
ベルトを駆動した際に、それの反力により、クローラに
は中間輪を持上げようとするモーメントが生じる。その
結果、クローラは、走行方向にある雪や泥などの堆積し
た所を容易に乗越えることができる。このため、クロー
ラベルト式車両の走破性が高まる。
(4) Since the rear wheel is a driving wheel, when the crawler belt is driven, a reaction force of the crawler belt generates a moment to lift the intermediate wheel on the crawler belt. As a result, the crawler can easily get over a place where snow, mud, and the like are accumulated in the traveling direction. Therefore, the traveling performance of the crawler belt type vehicle is enhanced.

【0011】請求項2は、前記サブビームは、クローラ
ベルトの張力調整をするために走行方向に伸縮可能に構
成したことを特徴とする。
According to a second aspect of the present invention, the sub-beam is configured to be extendable and contractible in a traveling direction in order to adjust a tension of a crawler belt.

【0012】簡単な構成で、クローラベルトの張力調整
をすることができる。
The tension of the crawler belt can be adjusted with a simple configuration.

【0013】請求項3は、前記左のサブビームと右のサ
ブビームとを、前記中間輪用支軸の取付け位置近傍に
て、揺動可能なクロスロッドで結合したことを特徴とす
る。
According to a third aspect of the present invention, the left sub-beam and the right sub-beam are connected to each other by a swingable cross rod near a mounting position of the intermediate wheel support shaft.

【0014】クローラベルト式車両を旋回した際など
に、中間輪の下方で、クローラベルトにサイドドラッグ
力(横滑り力)が発生する。その結果、左右のサブビー
ムに横方向の曲げモーメントが生じる。これに対して、
左のサブビームと右のサブビームとをクロスロッドにて
結合したので、左右のサブビームの曲げ剛性が高い。ま
た、左右のサブビームは、基部をスイングアームに取付
け、先端部同士をクロスロッドで結合したものである。
このため、後輪と中間輪のホイールアライメント(キャ
スター、キャンバー、トーインと称する車輪整列)が確
保でき、直進安定性、ステアリング応答性を高めること
ができる。
When a crawler belt type vehicle is turned, a side drag force (side slip force) is generated on the crawler belt below the intermediate wheel. As a result, a lateral bending moment is generated in the left and right sub-beams. On the contrary,
Since the left sub-beam and the right sub-beam are connected by the cross rod, the bending rigidity of the left and right sub-beams is high. The left and right sub-beams have their bases attached to a swing arm and their ends joined by a cross rod.
For this reason, wheel alignment (wheel alignment called casters, cambers, toe-in) between the rear wheel and the intermediate wheel can be ensured, and the straight running stability and steering response can be enhanced.

【0015】[0015]

【発明の実施の形態】本発明の実施の形態を添付図面に
基づいて以下に説明する。なお、図面は符号の向きに見
るものとする。図1は本発明に係るクローラベルト式車
両の側面図であり、クローラベルト式車両1は前輪をタ
イヤ、後輪をクローラとした、いわゆる、ハーフクロー
ラ車である。
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a side view of a crawler belt type vehicle according to the present invention. The crawler belt type vehicle 1 is a so-called half crawler vehicle in which front wheels are tires and rear wheels are crawlers.

【0016】詳しくは、クローラベルト式車両1は、前
部のキャビン2と後部の荷台3とを備えた車体フレーム
(車体)4に、駆動輪としての前輪5と、駆動輪として
の後輪6と、これら前・後輪5,6の間に介在した遊転
輪としての中間輪7と、これら後・中間輪6,7との間
に介在したイコライザ8とを左右に取付け、後輪6と中
間輪7とに(車輪間に)クローラベルト9を掛け渡すこ
とでクローラを構成した、4輪駆動・クローラ式車両で
ある。
More specifically, the crawler belt type vehicle 1 includes a vehicle body frame (vehicle body) 4 having a front cabin 2 and a rear carrier 3, a front wheel 5 as a drive wheel, and a rear wheel 6 as a drive wheel. And an intermediate wheel 7 as an idle wheel interposed between the front and rear wheels 5 and 6 and an equalizer 8 interposed between the rear and intermediate wheels 6 and 7 are mounted on the left and right sides. This is a four-wheel drive / crawler type vehicle in which a crawler is configured by extending a crawler belt 9 (between wheels) between the vehicle and a middle wheel 7.

【0017】前輪5、後輪6及び中間輪7はゴム製空気
入りタイヤを備え、このタイヤは、バルーンタイヤであ
る。前輪5は、後輪6及び中間輪7よりも大径である。
クローラベルト9は、ゴム材などの可撓性材料からな
り、内周面に且つ幅方向両側に、タイヤのショルダ部に
対する多数のサイドガイド部9a…(…は複数を示す。
以下同じ。)を起設し、接地面9bに所定の凹凸パター
ン(ラグパターン)を形成したものである。車体フレー
ム4は、後部にトランスミッション11a付きエンジン
11を取付けたものである。
The front wheel 5, the rear wheel 6, and the intermediate wheel 7 are provided with rubber pneumatic tires, which are balloon tires. The front wheel 5 has a larger diameter than the rear wheel 6 and the intermediate wheel 7.
The crawler belt 9 is made of a flexible material such as a rubber material, and has a plurality of side guide portions 9a (...) on the inner peripheral surface and on both sides in the width direction with respect to the shoulder portion of the tire.
same as below. ) Is raised, and a predetermined uneven pattern (lag pattern) is formed on the ground plane 9b. The vehicle body frame 4 has an engine 11 with a transmission 11a attached to a rear portion.

【0018】ところで、クローラベルト式車両1は、前
輪5のタイヤの接地面圧を0.1〜0.15kg/cm
2の範囲に設定し、一方、クローラベルト9の接地面圧
を0.04〜0.05kg/cm2の範囲に設定したも
のである。
The crawler belt type vehicle 1 has a contact surface pressure of the tire of the front wheel 5 of 0.1 to 0.15 kg / cm.
2 , while the contact pressure of the crawler belt 9 is set in the range of 0.04 to 0.05 kg / cm 2 .

【0019】雪上等の軟弱地において、クローラベルト
式車両1を走行時に、前輪5のタイヤの接地面圧が0.
1kg/cm2より小さいと、前輪タイヤの沈み深さが
過小になる。沈み深さが過小であると、雪や泥などに沈
んだ部分の側面からの投影面積が小さいので、操舵抵抗
も小さくなる。このため、操舵抵抗が小さくなり過ぎ
て、軟弱地で十分に操縦性を確保しにくくなる。また、
前輪5のタイヤの接地面圧が0.15kg/cm2より
大きいと、前輪タイヤの沈み深さが過大になる。沈み深
さが過大であると、雪や泥などの抵抗が大きくなるの
で、旋回性を高めにくくなり、特に、新雪でしかも未踏
の地では顕著となる。
When the crawler belt type vehicle 1 is running on a soft ground such as snow, the contact pressure of the tire of the front wheel 5 is set to 0.
If it is smaller than 1 kg / cm 2 , the sink depth of the front wheel tire becomes too small. If the sinking depth is too small, the projected area from the side of the part sinking in snow, mud, or the like is small, and the steering resistance is also small. For this reason, the steering resistance becomes too small, and it becomes difficult to secure sufficient maneuverability on a soft ground. Also,
If the contact pressure of the tire of the front wheel 5 is larger than 0.15 kg / cm 2 , the sink depth of the front wheel tire becomes excessive. If the sinking depth is too large, the resistance to snow and mud will increase, and it will be difficult to improve the turning performance, and it will be particularly noticeable in fresh snow and unexplored ground.

【0020】一方、クローラベルト9の接地面圧が0.
04kg/cm2より小さいと、クローラベルト9の沈
み深さが過小になり、また、接地面圧が0.05kg/
cm2より大きいと、クローラベルト9の沈み深さが過
大になる。クローラベルト9の沈み深さが過小であった
り過大であると、走行路面の走行抵抗が大きくなるの
で、走破性を高めにくくなり、特に、新雪でしかも未踏
の地では顕著となる。
On the other hand, when the contact pressure of the crawler belt 9 is set to 0.1.
If it is smaller than 0.4 kg / cm 2 , the sink depth of the crawler belt 9 will be too small, and the contact pressure will be 0.05 kg / cm 2.
If it is larger than cm 2 , the sinking depth of the crawler belt 9 will be excessive. If the sinking depth of the crawler belt 9 is too small or too large, the running resistance on the running road surface becomes large, so that it is difficult to improve the running performance, and it is particularly remarkable on fresh snow and unexplored ground.

【0021】従って、前輪5のタイヤの接地面圧及びク
ローラベルト9の接地面圧は、上記の範囲に設定するこ
とが好ましい。接地面圧をこのような範囲に設定するた
めに、トランスミッション11a付きエンジン11は、
全体をクローラベルト9の前端と後端との間に配設した
ものである。エンジン11は、後輪6の中心と中間輪7
の中心との間に配設することが好ましく、更には、エン
ジン11のクランクシャフトの中心Cから後輪6の中心
までの第1の距離L1と、クランクシャフトの中心Cか
ら中間輪7の中心までの第2の距離L2との比率を、約
2:1に設定することが最も好ましい。また、前記第1
の距離L1は、前輪5と後輪6との中心間距離(第3の
距離としてのホイールベース)L3の約30%の割合に
することが好ましい。更に、側面視で(この図におい
て)、クローラベルト9のループ内に、トランスミッシ
ョン11a付きエンジン11の一部を配設した。
Therefore, it is preferable that the contact surface pressure of the tire of the front wheel 5 and the contact surface pressure of the crawler belt 9 be set in the above ranges. In order to set the contact pressure in such a range, the engine 11 with the transmission 11a
The whole is disposed between the front end and the rear end of the crawler belt 9. The engine 11 includes a center of the rear wheel 6 and an intermediate wheel 7.
And a first distance L 1 from the center C of the crankshaft of the engine 11 to the center of the rear wheel 6, and from the center C of the crankshaft to the center wheel 7. the ratio of the second distance L 2 to the center, about 2: it is most preferred to be set to 1. In addition, the first
Distance L 1 is preferably in a proportion of about 30% of L 3 (wheelbase as a third distance) center-to-center distance between the rear wheel 6 and the front wheels 5. Further, a part of the engine 11 with the transmission 11a is disposed in the loop of the crawler belt 9 in a side view (in this figure).

【0022】なお、荷台3は車体フレーム4の後部上部
に一体に取付けた構成とした。14はマフラ、15は乗
員用シート、16はステアリングハンドル、17はチェ
ンジレバー、18はアクセルペダル、19はブレーキペ
ダル、21はサイドブレーキ、22はフロントフェンダ
である。
The carrier 3 is integrally mounted on the upper rear part of the body frame 4. 14 is a muffler, 15 is a passenger seat, 16 is a steering handle, 17 is a change lever, 18 is an accelerator pedal, 19 is a brake pedal, 21 is a side brake, and 22 is a front fender.

【0023】図2は本発明に係るクローラベルト式車両
の平面図であり、キャビン2及び荷台3を外した姿を示
す。なお、荷台3はこの図の想像線にて示す。車体フレ
ーム4は、前部にフロントサスペンション25と操舵装
置30と前輪用駆動装置40とを備え、後部に後輪用駆
動装置50とリヤ懸架装置60とを備える。
FIG. 2 is a plan view of the crawler belt type vehicle according to the present invention, in which the cabin 2 and the carrier 3 are removed. The carrier 3 is shown by imaginary lines in FIG. The body frame 4 includes a front suspension 25, a steering device 30, and a front wheel drive device 40 at a front portion, and a rear wheel drive device 50 and a rear suspension device 60 at a rear portion.

【0024】操舵装置30は、想像線にて示すステアリ
ングハンドル16の操舵力を伝達するためのタイロッド
31、このタイロッド31の両端のタイロッドエンド3
2,32に連結したナックルアーム33,33、これら
ナックルアーム33,33と前輪5,5の支軸5a,5
aとを連結したキングピン34,34等からなる。リヤ
懸架装置60は、後輪6及び中間輪7を車体フレーム4
(車体)に対して上下動のみ可能で車幅方向に移動不能
に取付けたものである。リヤ懸架装置60の詳細は後述
する。
The steering device 30 includes a tie rod 31 for transmitting a steering force of the steering handle 16 indicated by an imaginary line, and tie rod ends 3 at both ends of the tie rod 31.
Knuckle arms 33, 33 connected to the knuckle arms 33, 33 and the support shafts 5a, 5 of the front wheels 5, 5.
and a king pin 34, 34, etc., which are connected to The rear suspension device 60 connects the rear wheel 6 and the intermediate wheel 7 to the body frame 4.
It is mounted so that it can only move up and down with respect to the (body) and cannot move in the vehicle width direction. Details of the rear suspension device 60 will be described later.

【0025】次に、前輪用駆動装置40及び後輪用駆動
装置50を説明する。図3は本発明に係る前・後輪用駆
動装置の概念図である。クローラベルト式車両1は、エ
ンジン11の動力をトランスミッション11aを介し
て、前輪5,5及び後輪6,6に伝達する前・後輪駆動
式である。前輪用駆動装置40は、トランスミッション
11aの出力取出部11bから前方へ延出した前部推進
軸41と、この前部推進軸41に連結した前輪用差動装
置42と、この前輪用差動装置42と前輪5,5の支軸
5a,5a(図2参照)との間に連結した左右の前輪用
駆動軸43,43とからなる。また、前輪用駆動装置4
0は、エンジン11と前輪用駆動軸43,43との間に
ギヤボックス44を介在したものである。詳しくは、ギ
ヤボックス44は、前部推進軸41の途中に介在し、前
輪5を変速する変速機構45及び前輪5への動力伝達を
入り・切りするクラッチ機構46を内蔵したものであ
る。
Next, the front wheel drive device 40 and the rear wheel drive device 50 will be described. FIG. 3 is a conceptual diagram of a front and rear wheel drive device according to the present invention. The crawler belt type vehicle 1 is of a front / rear wheel drive type that transmits the power of an engine 11 to front wheels 5, 5 and rear wheels 6, 6 via a transmission 11a. The front wheel drive device 40 includes a front propulsion shaft 41 extending forward from an output extraction portion 11b of the transmission 11a, a front wheel differential device 42 connected to the front propulsion shaft 41, and a front wheel differential device. Left and right front wheel drive shafts 43, 43 are connected between the shaft 42 and the support shafts 5a, 5a (see FIG. 2) of the front wheels 5, 5. In addition, the front wheel drive device 4
Reference numeral 0 denotes a gear box 44 interposed between the engine 11 and the front wheel drive shafts 43, 43. More specifically, the gear box 44 includes a transmission mechanism 45 for shifting the front wheels 5 and a clutch mechanism 46 for turning on and off power transmission to the front wheels 5, which is interposed in the middle of the front propulsion shaft 41.

【0026】後輪用駆動装置50は、トランスミッショ
ン11aの出力取出部11bから後方へ延出した後部推
進軸51と、この後部推進軸51に自在継手52を介し
て連結した後輪用差動装置53と、この後輪用差動装置
53に連結した左右の後輪用駆動軸54,54とからな
り、これら後輪用駆動軸54,54の両端部に後輪6,
6を連結した構成である。56…は等速継手である。
The rear wheel drive device 50 includes a rear propulsion shaft 51 extending rearward from an output take-out portion 11b of the transmission 11a, and a rear wheel differential device connected to the rear propulsion shaft 51 via a universal joint 52. 53, and left and right rear wheel drive shafts 54, 54 connected to the rear wheel differential device 53. The rear wheels 6, 54 are attached to both ends of the rear wheel drive shafts 54, 54, respectively.
6 are connected. 56 are constant velocity joints.

【0027】次に、上記構成の前輪用駆動装置40及び
後輪用駆動装置50の作用を、図4に基づき説明する。
図4(a)〜(d)は本発明に係る前・後輪用駆動装置
の作用図である。(a)は、前輪5,5を小径タイヤと
し、クローラベルト9,9を装着した場合を示す。クラ
ッチ機構46は「入」状態にある。この場合は、変速機
構45を第I段に設定して、前輪5,5の小径タイヤの
速度とクローラベルト9,9の速度とを一致させる。そ
の結果、クローラベルト式車両1は、前・後輪駆動によ
る円滑な走行ができる。
Next, the operation of the front-wheel drive device 40 and the rear-wheel drive device 50 having the above configuration will be described with reference to FIG.
FIGS. 4A to 4D are operation diagrams of the front and rear wheel drive device according to the present invention. (A) shows a case where the front wheels 5 and 5 are small-diameter tires and the crawler belts 9 and 9 are attached. The clutch mechanism 46 is in the “on” state. In this case, the speed change mechanism 45 is set to the first stage, and the speeds of the small-diameter tires of the front wheels 5, 5 are made to match the speeds of the crawler belts 9, 9. As a result, the crawler belt type vehicle 1 can run smoothly by front and rear wheel drive.

【0028】(b)は、前輪5,5を大径タイヤとし、
クローラベルト9,9を装着した場合を示す。クラッチ
機構46は「入」状態にある。この場合は、変速機構4
5を第II段に設定して、前輪5,5の大径タイヤの速
度とクローラベルト9,9の速度とを一致させる。その
結果、クローラベルト式車両1は、前・後輪駆動による
円滑な走行ができる。
(B) shows that the front wheels 5, 5 are large diameter tires,
The case where the crawler belts 9 and 9 are mounted is shown. The clutch mechanism 46 is in the “on” state. In this case, the transmission mechanism 4
5 is set to the second stage, so that the speed of the large-diameter tires of the front wheels 5, 5 and the speed of the crawler belts 9, 9 match. As a result, the crawler belt type vehicle 1 can run smoothly by front and rear wheel drive.

【0029】(c)は、前輪5,5を大径タイヤとし、
クローラベルト9,9を外した場合を示す。クラッチ機
構46は「入」状態にある。この場合は、変速機構45
を第III段に設定して、前輪5,5の大径タイヤの速
度と後輪6,6のタイヤの速度とを一致させる。その結
果、クローラベルト式車両1は、前・後輪駆動による円
滑な走行ができる。
(C) shows that the front wheels 5 and 5 are large-diameter tires,
This shows a case where the crawler belts 9, 9 have been removed. The clutch mechanism 46 is in the “on” state. In this case, the transmission mechanism 45
Is set to the third stage, and the speeds of the large-diameter tires of the front wheels 5 and 5 are made equal to the speeds of the rear wheels 6 and 6. As a result, the crawler belt type vehicle 1 can run smoothly by front and rear wheel drive.

【0030】(d)は、上記(b)において、クラッチ
機構46を「切」状態にした場合を示す。この場合に
は、クローラベルト式車両1は、後輪駆動による走行が
できる。このように、クローラベルト式車両1は、クロ
ーラベルト9,9の着脱にかかわらず、また、前輪5,
5のタイヤ径にかかわらず、円滑に走行可能である。
(D) shows the case where the clutch mechanism 46 is set to the "disengaged" state in the above (b). In this case, the crawler belt type vehicle 1 can run by rear wheel drive. As described above, the crawler belt type vehicle 1 has the front wheels 5,
Regardless of the tire diameter of No. 5, the vehicle can run smoothly.

【0031】次に、リヤ懸架装置60を説明する。図5
は本発明に係るリヤ懸架装置の斜視図であり、リヤ懸架
装置60は、車体フレーム(車体)4から後方へスイン
グアーム61を上下揺動可能に延出し、このスイングア
ーム61の先端部に、後輪用駆動軸54,54を取付け
るとともに、前方へ延出させ且つ上下揺動可能に1対の
サブビーム63,63の基部を取付け、これらサブビー
ム63,63の先端部に中間輪用支軸66,66を取付
け、これら中間輪用支軸66,66に中間輪7,7(図
2参照)を取付け、前記後輪用駆動軸54,54に駆動
輪としての後輪6,6(図2参照)を取付けたものであ
る。
Next, the rear suspension device 60 will be described. FIG.
FIG. 1 is a perspective view of a rear suspension device according to the present invention. A rear suspension device 60 extends a swing arm 61 from the vehicle body frame (vehicle body) 4 backward to be able to swing up and down. The rear wheel drive shafts 54, 54 are mounted, and the bases of the pair of sub-beams 63, 63 are extended forward and swingable up and down. , 66, the intermediate wheels 7, 7 (see FIG. 2) are mounted on the intermediate wheel support shafts 66, 66, and the rear wheels 6, 6 as drive wheels are mounted on the rear wheel drive shafts 54, 54 (FIG. 2). Reference).

【0032】詳しくは、スイングアーム61は、車幅方
向に延出して車体フレーム4に回動可能に取付けた支持
ビーム部61aと、この支持ビーム部61aから車体後
方へ延出した3つのアーム部(左アーム部61b、中央
アーム部61c、右アーム部61d)とからなる、平面
視略E字状アームである。中央アーム部61cは、先端
部に後輪用差動装置53のハウジング53aを取付けた
筒体であり、後輪用差動装置53に連結する後部推進軸
51を挿通したものである。なお、後部推進軸51は、
スイングアーム61の揺動点の位置に自在継手52を設
けてあるので、スイングアーム61とともに上下揺動可
能である。後輪用差動装置53のハウジング53aは、
車幅方向両側に延出する連結筒部62,62を取付けた
ものであり、これらハウジング53aと両側の連結筒部
62,62とからなる連結体は、3つのアーム部61b
〜61dの先端部に掛け渡したビームとなる。
More specifically, the swing arm 61 includes a support beam 61a extending in the vehicle width direction and rotatably attached to the vehicle body frame 4, and three arm portions extending rearward from the support beam 61a. (Left arm portion 61b, central arm portion 61c, right arm portion 61d). The central arm portion 61c is a cylindrical body having a front end to which a housing 53a of a rear wheel differential device 53 is attached, and through which a rear propulsion shaft 51 connected to the rear wheel differential device 53 is inserted. The rear propulsion shaft 51 is
Since the universal joint 52 is provided at the position of the swing point of the swing arm 61, the swing arm 61 can swing up and down together with the swing arm 61. The housing 53a of the rear wheel differential 53 is
Connection cylinders 62, 62 extending on both sides in the vehicle width direction are attached. A connection body composed of the housing 53a and the connection cylinders 62, 62 on both sides includes three arm portions 61b.
It becomes a beam spanning the tip of 61d.

【0033】連結筒部62,62は、後輪用駆動軸5
4,54を挿通し、しかも、これら後輪用駆動軸54,
54を回転可能に且つ軸方向移動不能に取付けたもので
ある。このため、スイングアーム61は先端部に、連結
筒部62,62を介して、後輪用駆動軸54,54を回
転可能に且つ軸方向移動不能に取付けたことになる。従
って、後輪用駆動軸54,54に取付けた後輪6,6
は、車体フレーム(車体)4に対して上下動のみ可能で
車幅方向に移動不能である。また、後輪用駆動軸54,
54は、車体フレーム4に対して平行状態を維持しつつ
上下揺動可能である。このため、左右の後輪6,6は、
互いに連動して同時に上下動可能である。なお、後輪用
差動装置53及び後輪用駆動軸54,54と左右の連結
筒部62,62とは、同心上に配設したものである。
The connecting cylinders 62, 62
4 and 54, and these rear wheel drive shafts 54, 54
54 is mounted so as to be rotatable and immovable in the axial direction. Therefore, the swing arm 61 has the rear wheel drive shafts 54, 54 rotatably and axially immovably attached to the distal end thereof via the connecting cylinders 62, 62. Therefore, the rear wheels 6, 6 attached to the rear wheel drive shafts 54, 54 are provided.
Can only move up and down with respect to the body frame (body) 4 and cannot move in the vehicle width direction. Also, the rear wheel drive shaft 54,
Numeral 54 can swing up and down while maintaining a parallel state with respect to the body frame 4. Therefore, the left and right rear wheels 6, 6
It can move up and down simultaneously in conjunction with each other. The rear wheel differential device 53, the rear wheel drive shafts 54, 54, and the left and right connecting cylinders 62, 62 are arranged concentrically.

【0034】左右の連結筒部62,62は、車幅方向両
端に1対のサブビーム63,63の基部を取付けたもの
であり、これらサブビーム63,63は前方へ延出した
ものである。ところで、サブビーム63は、クローラベ
ルト9(図1参照)の張力調整をするために、走行方向
に伸縮可能に構成したものである。詳しくは、サブビー
ム63は、連結筒部62,62に上下揺動可能に取付け
たビーム部材64と、このビーム部材64の先端部側面
に前後スライド可能に取付けたビーム延長部65とから
なり、ビーム延長部65に中間輪支軸66を取付けたも
のである。そして、中間輪用支軸66,66は、中間輪
7,7を取付けたものである。従って、中間輪7,7
は、車体フレーム(車体)4に対して上下動のみ可能で
車幅方向に移動不能である。
The left and right connecting cylinders 62, 62 have bases of a pair of sub-beams 63, 63 attached to both ends in the vehicle width direction, and these sub-beams 63, 63 extend forward. By the way, the sub-beam 63 is configured to be extendable and contractible in the traveling direction in order to adjust the tension of the crawler belt 9 (see FIG. 1). More specifically, the sub-beam 63 is composed of a beam member 64 attached to the connecting cylinder portions 62, 62 so as to be able to swing up and down, and a beam extension portion 65 attached to the front end side of the beam member 64 so as to be slidable back and forth. The intermediate wheel support shaft 66 is attached to the extension 65. The intermediate wheel support shafts 66, 66 have the intermediate wheels 7, 7 attached thereto. Therefore, the intermediate wheels 7, 7
Can only move up and down with respect to the body frame (body) 4 and cannot move in the vehicle width direction.

【0035】ビーム部材64とビーム延長部65とは、
ターンバックル67にてスライド調整可能に連結したも
のであり、従って、クローラベルト9の張力調整作業
を、ターンバックル67で行うことになる。64aはビ
ーム延長部65を案内するガイド部、64b…はビーム
部材64にビーム延長部65を止めるボルトである。左
のサブビーム63と右のサブビーム63とは、中間輪用
支軸66,66の取付け位置近傍にて、揺動可能なクロ
スロッド68で結合したものである。61e,61eは
補強部材、69は後方ガードパイプである。
The beam member 64 and the beam extension 65 are
The slide buckle 67 is connected so as to be adjustable in slide. Therefore, the tension adjustment of the crawler belt 9 is performed by the turn buckle 67. 64a are guide portions for guiding the beam extension portion 65, 64b... Are bolts for fixing the beam extension portion 65 to the beam member 64. The left sub-beam 63 and the right sub-beam 63 are connected by a swingable cross rod 68 near the attachment position of the intermediate wheel support shafts 66, 66. 61e and 61e are reinforcing members, and 69 is a rear guard pipe.

【0036】図6は本発明に係るリヤ懸架装置の側面図
であり、リヤ懸架装置60は、車体後部としての荷台3
又は車体フレーム4に、第1・第2オイルダンパ(ショ
ックアブソーバ)71,72を介してサブビーム63の
基端部及び先端部近傍を懸架したものである。詳しく
は、第1オイルダンパ71は、ブラケット73を介して
左右の後輪用駆動軸54,54の近傍を左右2箇所懸架
し、第2オイルダンパ72は、ブラケット74を介して
ビーム部材64の先端部(中間輪用支軸66の近傍)を
左右2箇所懸架したものである。なお、第1オイルダン
パ71は、左右の後輪用駆動軸54,54の近傍を1箇
所懸架したものでもよい。
FIG. 6 is a side view of the rear suspension device according to the present invention.
Alternatively, the base beam and the vicinity of the front end of the sub beam 63 are suspended from the body frame 4 via first and second oil dampers (shock absorbers) 71 and 72. More specifically, the first oil damper 71 suspends the left and right rear wheel drive shafts 54, 54 at two locations on the left and right via a bracket 73, and the second oil damper 72 supports the beam member 64 via the bracket 74. The distal end (near the support shaft 66 for the intermediate wheel) is suspended at two places on the left and right. The first oil damper 71 may be one in which the vicinity of the left and right rear wheel drive shafts 54, 54 is suspended at one place.

【0037】図7は本発明に係るクロスロッド取付け部
分の分解斜視図である。クロスロッド68は、ビーム部
材64の延出方向に貫通した結合環68a,68aを車
幅方向両端に取付け、これら結合環68a,68aにダ
ンパ機能を有するゴムブッシュ75,75を圧入したも
のである。そして、クロスロッド68の端部は、ゴムブ
ッシュ75,75を介して、ビーム部材64,64のブ
ラケット64c,64cに上下揺動可能にボルト76,
76にて結合する。
FIG. 7 is an exploded perspective view of a cross rod mounting portion according to the present invention. The cross rod 68 has connecting rings 68a, 68a penetrating in the extending direction of the beam member 64 attached to both ends in the vehicle width direction, and rubber bushes 75, 75 having a damper function are press-fitted into the connecting rings 68a, 68a. . The ends of the cross rod 68 are vertically swayable to the brackets 64c, 64c of the beam members 64, 64 via rubber bushes 75, 75, respectively.
The connection is made at 76.

【0038】図8は本発明に係るリヤ懸架装置の平面図
であり、車体フレーム4の後部に且つ車幅方向略中央
に、ブラケット4a,4aを介してトランスミッション
11a付きエンジン11を取付けた姿を示す。
FIG. 8 is a plan view of a rear suspension system according to the present invention, in which an engine 11 with a transmission 11a is mounted via brackets 4a, 4a at the rear of the body frame 4 and substantially at the center in the vehicle width direction. Show.

【0039】次に、上記構成のリヤ懸架装置60の作用
を説明する。図9(a),(b)は本発明に係るリヤ懸
架装置の作用図であり、(a)は本発明を示し、(b)
は比較例を示す。(b)の示す比較例のハーフクローラ
車は、車体4と後輪6,6との間をオイルダンパ71,
71で連結している。このようなハーフクローラ車が斜
面を横切って走行した場合、すなわち、車体4を左右に
傾けた場合に、オイルダンパ71,71より上の部分が
谷側へ移動するので、車体重心Gが谷側へ移動する(G
→G0)。このため、車体4の重量バランスが偏り、操
縦性に影響がでる。これに対して、(a)に示す本発明
のハーフクローラ車は、後輪6,6を、車体に対して上
下動のみ可能で車幅方向に移動不能に取付けたので、斜
面を横切って走行した場合に、車体4の重心Gが車幅方
向に移動しない。このため、車体4の重量バランスが偏
らず安定性が良く、操縦性に影響がでない。
Next, the operation of the rear suspension device 60 having the above configuration will be described. 9 (a) and 9 (b) are action diagrams of the rear suspension device according to the present invention, where (a) shows the present invention and (b)
Indicates a comparative example. The half crawler vehicle of the comparative example shown in (b) has an oil damper 71 between the vehicle body 4 and the rear wheels 6, 6.
It is connected by 71. When such a half-crawler vehicle travels across a slope, that is, when the vehicle body 4 is tilted left and right, the portion above the oil dampers 71, 71 moves toward the valley side, so that the vehicle weight center G becomes lower than the valley side. Go to (G
→ G0). For this reason, the weight balance of the vehicle body 4 is biased, and the maneuverability is affected. On the other hand, in the half-crawler vehicle of the present invention shown in (a), since the rear wheels 6, 6 can be moved only up and down with respect to the vehicle body and cannot be moved in the vehicle width direction, the vehicle travels across a slope. In this case, the center of gravity G of the vehicle body 4 does not move in the vehicle width direction. For this reason, the weight balance of the vehicle body 4 is not biased, the stability is good, and there is no influence on the maneuverability.

【0040】一方、図2において、後輪6,6を、車体
4に対して上下動のみ可能で車幅方向に移動不能に取付
けたので、クローラベルト式車両1の旋回時に発生する
横向加速度(一般に「横G」という。)によって、クロ
ーラベルト9,9にサイドドラッグ力(横滑り力)が発
生する。その結果、クローラベルト9,9にサイドスリ
ップが発生しやすい。このため、サイドスリップを積極
的に利用することができるので、旋回性を高めることが
できる。
On the other hand, in FIG. 2, since the rear wheels 6, 6 are attached to the vehicle body 4 so that they can only move up and down and cannot move in the vehicle width direction, the lateral acceleration (when the crawler belt type vehicle 1 turns) is generated. (Generally referred to as "lateral G")), a side drag force (lateral sliding force) is generated in the crawler belts 9, 9. As a result, side slips easily occur in the crawler belts 9,9. For this reason, since side slip can be positively used, turning performance can be improved.

【0041】また、スイングアーム31の先端部に1対
のサブビーム63,63を上下揺動可能に取付け、これ
らのサブビーム63,63を前方に延出し、その先端部
に中間輪用支軸66,66を取付け、これら中間輪用支
軸66,66に中間輪7,7を取付けたので、1対の中
間輪7,7は互いに独立して上下動可能であり、路面の
凹凸に対応して円滑に上下動することができる。このた
め、凹凸の多い路面でクローラベルト式車両1を走行し
た場合に、各中間輪7,7が上下動するので、車体4は
緩慢に上下動することになる。従って、路面追従性が良
いので乗り心地が良く、また、車体4に対して、左右の
後輪6,6を同時に上下動可能に取付けた場合であって
も、車体4の急激な上下動を抑制できる。
A pair of sub-beams 63, 63 are attached to the tip of the swing arm 31 so as to be able to swing up and down, and these sub-beams 63, 63 are extended forward, and the support shaft 66 for the intermediate wheel is attached to the tip thereof. 66, and the intermediate wheels 7, 7 are mounted on the support shafts 66, 66 for the intermediate wheels, so that the pair of intermediate wheels 7, 7 can move up and down independently of each other, corresponding to the unevenness of the road surface. It can move up and down smoothly. For this reason, when the crawler belt type vehicle 1 travels on a road surface with a lot of unevenness, the intermediate wheels 7, 7 move up and down, so that the vehicle body 4 moves up and down slowly. Accordingly, the vehicle has good road following ability and therefore has a good riding comfort. Even when the left and right rear wheels 6 and 6 are attached to the vehicle body 4 so as to be able to move up and down at the same time, rapid up and down movement of the vehicle body 4 is prevented. Can be suppressed.

【0042】更に、後輪6,6を駆動輪としたので、ク
ローラベルト9,9を駆動した際に、それの反力によ
り、クローラには中間輪を持上げようとするモーメント
が生じる。その結果、クローラは、走行方向にある雪や
泥などの堆積した所を容易に乗越えることができる。こ
のため、クローラベルト式車両1の走破性が高まる。
Further, since the rear wheels 6, 6 are used as driving wheels, when the crawler belts 9, 9 are driven, a reaction force of the crawler belts 9, 9 generates a moment for lifting the intermediate wheel on the crawler. As a result, the crawler can easily get over a place where snow, mud, and the like are accumulated in the traveling direction. Therefore, the traveling performance of the crawler belt type vehicle 1 is enhanced.

【0043】なお、上記実施の形態において、変速機構
45やクラッチ機構46は、エンジン11と前輪用駆動
軸13,13との間、又はエンジン11と後輪用駆動軸
54,54との間に介在したものであればよい。また、
変速機構45の変速段数は、用途に応じて任意に設定す
ればよい。更に、クラッチ機構46の取付けは任意であ
る。更にまた、後輪6及び中間輪7は、車体フレーム
(車体)4に対して上下動のみ可能で車幅方向に移動不
能であればよい。例えば、スイングアーム61の先端部
に、後輪用駆動軸54,54を上下動のみ可能で車幅方
向に移動不能に直接取付け、これら後輪用駆動軸54,
54に後輪6,6を取付けたものでもよい。サブビーム
63は、クローラベルト9の張力調整をするために走行
方向に伸縮可能な構成であればよく、ビーム部材64と
ビーム延長部65とターンバックル67との組合せに限
定するものではない。
In the above embodiment, the speed change mechanism 45 and the clutch mechanism 46 are provided between the engine 11 and the front wheel drive shafts 13, 13 or between the engine 11 and the rear wheel drive shafts 54, 54. Anything that is interposed may be used. Also,
The number of gear stages of the speed change mechanism 45 may be set arbitrarily according to the application. Further, the attachment of the clutch mechanism 46 is optional. Furthermore, the rear wheel 6 and the intermediate wheel 7 need only be able to move up and down with respect to the vehicle body frame (vehicle body) 4 and cannot move in the vehicle width direction. For example, the rear wheel drive shafts 54, 54 are directly mounted on the tip of the swing arm 61 so that they can only move up and down and cannot move in the vehicle width direction.
The rear wheels 6 and 6 may be attached to 54. The sub beam 63 may be configured to be expandable and contractible in the traveling direction in order to adjust the tension of the crawler belt 9, and is not limited to the combination of the beam member 64, the beam extension 65, and the turnbuckle 67.

【0044】[0044]

【発明の効果】本発明は上記構成により次の効果を発揮
する。請求項1は、車体前部に空気入りタイヤ付き前輪
を取付け、車体後部にリヤ懸架装置を介して中間輪及び
後輪を取付け、これら中間輪及び後輪にクローラベルト
を掛け渡したクローラベルト式車両において、車体から
後方へスイングアームを上下揺動可能に延出し、このス
イングアームの先端部に、後輪用駆動軸を取付けるとと
もに、前方へ延出させ且つ上下揺動可能に1対のサブビ
ームの基部を取付け、これらサブビームの先端部に中間
輪用支軸を取付け、これら中間輪用支軸に中間輪を取付
け、前記後輪用駆動軸に駆動輪としての後輪を取付け、
これら中間輪及び後輪を、前記車体に対して上下動のみ
可能で車幅方向に移動不能に取付けたことを特徴とす
る。
According to the present invention, the following effects are exhibited by the above configuration. A crawler belt type in which a front wheel with a pneumatic tire is mounted on a front portion of a vehicle body, an intermediate wheel and a rear wheel are mounted on a rear portion of the vehicle body via a rear suspension device, and a crawler belt is stretched over the intermediate wheel and the rear wheel. In a vehicle, a swing arm extends rearward from the vehicle body so as to be vertically swingable. A drive shaft for a rear wheel is attached to a tip portion of the swing arm, and a pair of sub-beams are extended forward and vertically swingable. The base of the sub-beam, the support for the intermediate wheel is mounted on the tip of these sub-beams, the intermediate wheel is mounted on the support for the intermediate wheel, the rear wheel as a drive wheel is mounted on the drive shaft for the rear wheel,
The intermediate wheel and the rear wheel are mounted so that they can move only up and down with respect to the vehicle body and cannot move in the vehicle width direction.

【0045】(1)後輪を、車体に対して上下動のみ可
能で車幅方向に移動不能に取付けたので、斜面を横切っ
て走行した場合でも、車体の重心は車幅方向に移動しな
い。そのため、車体の重量バランスが偏らず安定性が良
く、操縦性に影響がでない。
(1) Since the rear wheels are mounted so that they can only move up and down with respect to the vehicle body and cannot move in the vehicle width direction, the center of gravity of the vehicle body does not move in the vehicle width direction even when traveling across a slope. Therefore, the weight balance of the vehicle body is not biased, the stability is good, and the maneuverability is not affected.

【0046】(2)後輪を、車体に対して上下動のみ可
能で車幅方向に移動不能に取付けたので、クローラベル
ト式車両の旋回時に発生する横向加速度によって、クロ
ーラベルトにサイドドラッグ力が発生する。その結果、
クローラベルトにサイドスリップが発生しやすい。この
ため、サイドスリップを積極的に利用することができる
ので、旋回性を高めることができる。
(2) Since the rear wheel is mounted so that it can only move up and down with respect to the vehicle body and cannot move in the vehicle width direction, a side drag force is applied to the crawler belt by the lateral acceleration generated when the crawler belt type vehicle turns. Occur. as a result,
Crawler belts are prone to side slip. For this reason, since side slip can be positively used, turning performance can be improved.

【0047】(3)スイングアームの先端部に1対のサ
ブビームを上下揺動可能に取付け、これらのサブビーム
を前方に延出し、その先端部に中間輪用支軸を取付け、
これら中間輪用支軸に中間輪を取付けたので、1対の中
間輪は互いに独立して上下動可能であり、路面の凹凸に
対応して円滑に上下動することができる。このため、凹
凸の多い路面でクローラベルト式車両を走行した場合
に、各中間輪が上下動するので、車体は緩慢に上下動す
ることになる。従って、路面追従性が良いので乗り心地
が良く、また、車体に対して、左右の後輪を同時に上下
動可能に取付けた場合であっても、車体の急激な上下動
を抑制できる。
(3) A pair of sub-beams is attached to the tip of the swing arm so as to be able to swing up and down, these sub-beams are extended forward, and an intermediate wheel support shaft is attached to the tip.
Since the intermediate wheels are mounted on the intermediate wheel support shafts, the pair of intermediate wheels can move up and down independently of each other, and can move up and down smoothly in response to unevenness of the road surface. For this reason, when the crawler belt type vehicle travels on a road surface having a lot of unevenness, each intermediate wheel moves up and down, so that the vehicle body slowly moves up and down. Therefore, the vehicle has good road following ability, so that the ride comfort is good. Also, even when the left and right rear wheels are attached to the vehicle body so as to be able to move up and down at the same time, it is possible to suppress sudden vertical movement of the vehicle body.

【0048】(4)後輪を駆動輪としたので、クローラ
ベルトを駆動した際に、それの反力により、クローラに
は中間輪を持上げようとするモーメントが生じる。その
結果、クローラは、走行方向にある雪や泥などの堆積し
た所を容易に乗越えることができる。このため、クロー
ラベルト式車両の走破性が高まる。
(4) Since the rear wheel is a driving wheel, when the crawler belt is driven, a reaction force of the crawler belt generates a moment for lifting the intermediate wheel on the crawler belt. As a result, the crawler can easily get over a place where snow, mud, and the like are accumulated in the traveling direction. Therefore, the traveling performance of the crawler belt type vehicle is enhanced.

【0049】請求項2は、サブビームは、クローラベル
トの張力調整をするために走行方向に伸縮可能に構成し
たことを特徴とする。
According to a second aspect of the present invention, the sub-beam is configured to be extendable and contractible in the traveling direction in order to adjust the tension of the crawler belt.

【0050】簡単な構成で、クローラベルトの張力調整
をすることができる。
The tension of the crawler belt can be adjusted with a simple structure.

【0051】請求項3は、前記左のサブビームと右のサ
ブビームとを、前記中間輪用支軸の取付け位置近傍に
て、揺動可能なクロスロッドで結合したことを特徴とす
る。
According to a third aspect of the present invention, the left sub-beam and the right sub-beam are connected by a swingable cross rod near a position where the intermediate wheel support shaft is mounted.

【0052】クローラベルト式車両を旋回した際など
に、中間輪の下方で、クローラベルトにサイドドラッグ
力(横滑り力)が発生する。その結果、左右のサブビー
ムに横方向の曲げモーメントが生じる。これに対して、
左のサブビームと右のサブビームとをクロスロッドにて
結合したので、左右のサブビームの曲げ剛性が高い。ま
た、左右のサブビームは、基部をスイングアームに取付
け、先端部同士をクロスロッドで結合したものである。
このため、後輪と中間輪のホイールアライメント(キャ
スター、キャンバー、トーインと称する車輪整列)が確
保でき、直進安定性、ステアリング応答性を高めること
ができる。
When a crawler belt type vehicle is turned, a side drag force (side slip force) is generated on the crawler belt below the intermediate wheel. As a result, a lateral bending moment is generated in the left and right sub-beams. On the contrary,
Since the left sub-beam and the right sub-beam are connected by the cross rod, the bending rigidity of the left and right sub-beams is high. The left and right sub-beams have their bases attached to a swing arm and their ends joined by a cross rod.
For this reason, wheel alignment (wheel alignment called casters, cambers, toe-in) between the rear wheel and the intermediate wheel can be ensured, and the straight running stability and steering response can be enhanced.

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

【図1】本発明に係るクローラベルト式車両の側面図FIG. 1 is a side view of a crawler belt type vehicle according to the present invention.

【図2】本発明に係るクローラベルト式車両の平面図FIG. 2 is a plan view of a crawler belt type vehicle according to the present invention.

【図3】本発明に係る前・後輪用駆動装置の概念図FIG. 3 is a conceptual diagram of a front and rear wheel drive device according to the present invention.

【図4】本発明に係る前・後輪用駆動装置の作用図FIG. 4 is an operation diagram of a front and rear wheel drive device according to the present invention.

【図5】本発明に係るリヤ懸架装置の斜視図FIG. 5 is a perspective view of a rear suspension device according to the present invention.

【図6】本発明に係るリヤ懸架装置の側面図FIG. 6 is a side view of the rear suspension device according to the present invention.

【図7】本発明に係るクロスロッド取付け部分の分解斜
視図
FIG. 7 is an exploded perspective view of a cross rod mounting portion according to the present invention.

【図8】本発明に係るリヤ懸架装置の平面図FIG. 8 is a plan view of a rear suspension device according to the present invention.

【図9】本発明に係るリヤ懸架装置の作用図FIG. 9 is an operation diagram of the rear suspension device according to the present invention.

【符号の説明】[Explanation of symbols]

1…クローラベルト式車両、5…前輪、6…後輪、7…
中間輪、9…クローラベルト、11…エンジン、11a
…トランスミッション、43…前輪用駆動軸、44…ギ
ヤボックス、45…変速機構、46…クラッチ機構、5
4…後輪用駆動軸、60…リヤ懸架装置、61…スイン
グアーム、63…サブビーム、64…ビーム部材、65
…ビーム延長部、66…中間輪支軸、67…ターンバッ
クル、68…クロスロッド。
1: Crawler belt type vehicle, 5: front wheel, 6: rear wheel, 7 ...
Middle wheel, 9 crawler belt, 11 engine, 11a
... Transmission, 43 ... Front wheel drive shaft, 44 ... Gear box, 45 ... Transmission mechanism, 46 ... Clutch mechanism, 5
Reference numeral 4: drive shaft for rear wheel, 60: rear suspension device, 61: swing arm, 63: sub beam, 64: beam member, 65
… Beam extension part, 66… Middle wheel spindle, 67… Turnbuckle, 68… Cross rod.

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 車体前部に空気入りタイヤ付き前輪を取
付け、車体後部にリヤ懸架装置を介して中間輪及び後輪
を取付け、これら中間輪及び後輪にクローラベルトを掛
け渡したクローラベルト式車両において、車体から後方
へスイングアームを上下揺動可能に延出し、このスイン
グアームの先端部に、後輪用駆動軸を取付けるととも
に、前方へ延出させ且つ上下揺動可能に1対のサブビー
ムの基部を取付け、これらサブビームの先端部に中間輪
用支軸を取付け、これら中間輪用支軸に中間輪を取付
け、前記後輪用駆動軸に駆動輪としての後輪を取付け、
これら中間輪及び後輪を、前記車体に対して上下動のみ
可能で車幅方向に移動不能に取付けたことを特徴とする
クローラベルト式車両の懸架装置。
1. A crawler belt type in which a front wheel with a pneumatic tire is mounted on a front portion of a vehicle body, an intermediate wheel and a rear wheel are mounted on a rear portion of the vehicle body via a rear suspension device, and a crawler belt is stretched over the intermediate wheel and the rear wheel. In a vehicle, a swing arm extends rearward from the vehicle body so as to be vertically swingable. A drive shaft for a rear wheel is attached to a tip portion of the swing arm, and a pair of sub-beams are extended forward and vertically swingable. The base of the sub-beam, the support for the intermediate wheel is mounted on the tip of these sub-beams, the intermediate wheel is mounted on the support for the intermediate wheel, the rear wheel as a drive wheel is mounted on the drive shaft for the rear wheel,
A suspension device for a crawler belt type vehicle, wherein the intermediate wheel and the rear wheel are attached to the vehicle body so as to be able to move only vertically and not to move in the vehicle width direction.
【請求項2】 前記サブビームは、クローラベルトの張
力調整をするために走行方向に伸縮可能に構成したこと
を特徴とする請求項1記載のクローラベルト式車両の懸
架装置。
2. The suspension device for a crawler belt type vehicle according to claim 1, wherein the sub beam is configured to be extendable and contractible in a traveling direction to adjust a tension of the crawler belt.
【請求項3】 前記左のサブビームと右のサブビームと
を、前記中間輪用支軸の取付け位置近傍にて、揺動可能
なクロスロッドで結合したことを特徴とする請求項1又
は請求項2記載のクローラベルト式車両の懸架装置。
3. The left sub-beam and the right sub-beam are connected by a swingable cross rod in the vicinity of a mounting position of the support shaft for the intermediate wheel. A suspension device for a crawler belt type vehicle according to the above.
JP20079196A 1996-07-30 1996-07-30 Crawler belt type vehicle suspension system Expired - Fee Related JP3585196B2 (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
JP20079196A JP3585196B2 (en) 1996-07-30 1996-07-30 Crawler belt type vehicle suspension system
US08/893,831 US5975226A (en) 1996-07-30 1997-07-11 Crawler belt vehicle
CA002210818A CA2210818C (en) 1996-07-30 1997-07-18 Crawler belt vehicle
CA002476482A CA2476482C (en) 1996-07-30 1997-07-18 Crawler belt vehicle
IDP972625A ID19367A (en) 1996-07-30 1997-07-29 VEHICLES SHADTING WHEEL WHEEL
EP97305735A EP0823369B1 (en) 1996-07-30 1997-07-30 Crawler belt vehicle
DE69722683T DE69722683T2 (en) 1996-07-30 1997-07-30 Crawler Vehicle
EP01101579A EP1106487B1 (en) 1996-07-30 1997-07-30 Crawler belt vehicle
DE69736787T DE69736787T2 (en) 1996-07-30 1997-07-30 Caterpillar
EP01101575A EP1097859B1 (en) 1996-07-30 1997-07-30 Crawler belt vehicle
DE69719635T DE69719635T2 (en) 1996-07-30 1997-07-30 Crawler Vehicle
CN97115489A CN1088667C (en) 1996-07-30 1997-07-30 Crawler belt vehicle
EP01101574A EP1097858B1 (en) 1996-07-30 1997-07-30 Crawler belt vehicle
DE69738303T DE69738303T2 (en) 1996-07-30 1997-07-30 Caterpillar
US09/354,472 US6155363A (en) 1996-07-30 1999-07-15 Crawler belt vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20079196A JP3585196B2 (en) 1996-07-30 1996-07-30 Crawler belt type vehicle suspension system

Publications (2)

Publication Number Publication Date
JPH1045061A true JPH1045061A (en) 1998-02-17
JP3585196B2 JP3585196B2 (en) 2004-11-04

Family

ID=16430257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20079196A Expired - Fee Related JP3585196B2 (en) 1996-07-30 1996-07-30 Crawler belt type vehicle suspension system

Country Status (1)

Country Link
JP (1) JP3585196B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200043830A (en) * 2018-10-18 2020-04-28 박원영 Rear wheel vibration and impact diminution device of tricycles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200043830A (en) * 2018-10-18 2020-04-28 박원영 Rear wheel vibration and impact diminution device of tricycles

Also Published As

Publication number Publication date
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