JP2554964Y2 - Driven wheel direction switching device for trucks - Google Patents
Driven wheel direction switching device for trucksInfo
- Publication number
- JP2554964Y2 JP2554964Y2 JP4942193U JP4942193U JP2554964Y2 JP 2554964 Y2 JP2554964 Y2 JP 2554964Y2 JP 4942193 U JP4942193 U JP 4942193U JP 4942193 U JP4942193 U JP 4942193U JP 2554964 Y2 JP2554964 Y2 JP 2554964Y2
- Authority
- JP
- Japan
- Prior art keywords
- driven wheels
- wheels
- vehicle body
- driven
- driven wheel
- 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
Landscapes
- Handcart (AREA)
- Body Structure For Vehicles (AREA)
Description
【0001】[0001]
【産業上の利用分野】本考案は、両駆動輪の後方にそれ
ぞれ同様に回動するよう軸架したキヤスタ形の両従動輪
の向きを切換えることができる運搬車の従動輪方向切換
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driven wheel direction switching device for a carrier vehicle capable of switching the directions of two caster-type driven wheels which are mounted on a shaft so as to rotate in the same manner behind both driving wheels.
【0002】[0002]
【従来の技術】従来は、運搬車で、その前後進切り換え
時に舵取車輪の向きを変更して変更操作を容易にするこ
とは、例えば特公昭56−26591号公報に見られる
ように知られている。2. Description of the Related Art Conventionally, it has been known to change the direction of a steering wheel at the time of switching between forward and backward movement of a carrier to facilitate the change operation, as disclosed in Japanese Patent Publication No. 56-26591. ing.
【0003】[0003]
【考案が解決しようとする課題】しかしながら、車体下
部の両側前後に位置するよう両駆動輪及びキヤスタ形の
両従動輪をそれぞれ配備して構成する運搬車において、
前記のような技術を採用しても、車輪の向きを変更する
場合には、車体を持ち上げながらペダルを操作しなけれ
ばならないので、重い荷物を積んだ運搬車でそのような
切換作業を行なうことは難しくて労力を要するとともに
危険でもある、といった不具合を呈している。However, in a transport vehicle having both drive wheels and caster-type driven wheels arranged at both front and rear sides of a lower portion of the vehicle body,
Even if the above technology is adopted, when changing the direction of the wheels, the pedals must be operated while lifting the vehicle body. Are difficult, labor-intensive and dangerous.
【0004】[0004]
【課題を解決するための手段】本考案は、そのような不
具合を解決し、連動する両従動輪の向きを簡単かつ有効
に変更操作できるように工夫したものであり、そのた
め、車体下部の進行方向両側前後に位置するよう両駆動
輪及びキヤスタ形の両従動輪をそれぞれ配備して構成す
る運搬車において、車体の両側に垂立状に架設した両キ
ングピンの下部には、同じ方向に回動するよう連動連繋
した両L形支持板の上部をそれぞれ軸支するとともに、
両L形支持板の下部に軸架した横軸には、下部に従動輪
を軸架して前後方向に振替自在とした両支持アームの上
部をそれぞれ連結し、前記キングピンの軸心上に位置す
るユニバーサルジョイントを介して連結軸の両端を前記
両横軸にそれぞれ連結し、前記連結軸の途中に設けた受
動部材をそれぞれ反対方向に回動させることができる両
ペダル部材の一方の踏込みによりそれぞれ反対方向に回
動操作可能にして構成したものである。SUMMARY OF THE INVENTION The present invention has been devised to solve such a problem and to make it possible to easily and effectively change the directions of both interlocking driven wheels. In a transport vehicle that has both drive wheels and caster-type driven wheels positioned so as to be located in front and rear on both sides in the direction, the lower part of both king pins vertically erected on both sides of the vehicle body rotates in the same direction. In addition to supporting the upper parts of both L-shaped support plates interlocked and linked so that
The lower shafts of the two L-shaped support plates are connected to the upper portions of the two support arms, each of which has a driven wheel mounted on the lower portion thereof and which can be freely moved in the front-rear direction, and is located on the axis of the kingpin. The two ends of the connection shaft are connected to the two horizontal shafts via universal joints, respectively, and the passive members provided in the middle of the connection shaft can be turned in the opposite directions respectively by depressing one of the two pedal members. It is configured to be rotatable in the opposite direction.
【0005】[0005]
【作用】したがって、両従動輪はそれぞれキングピンの
軸心中心に同様に回動しながら従動することになるが、
機体を前進から後進に、また、後進から前進に切り換え
る場合、両従動輪がいずれの方向に向いていても、両ペ
ダル部材の一方を踏み込むだけで、受動部材を正逆方向
にそれぞれ回動させながら両支持アームを同時に前後方
向に振り換えることができることになって、キヤスタ形
両従動輪の向きを簡単容易に振り換えることができる。Therefore, both driven wheels are driven while being similarly rotated about the center of the kingpin.
When switching the fuselage from forward to reverse and from reverse to forward, simply depress one of the two pedal members and rotate the passive members in the forward and reverse directions, regardless of the direction of both driven wheels. However, since both support arms can be simultaneously moved in the front-rear direction, the directions of the caster-type driven wheels can be easily and easily changed.
【0006】[0006]
【実施例】図2は農用運搬車を概略示した側面図であ
り、荷台22の進行方向後方に立設した両ハンドル杆
6、6の中間部間には燃料タンク7を架設し、荷台22
の前部下方両側には、フレーム1上のエンジン2から伝
動部カバー3内の伝動部材により伝動できる両駆動輪
4、4を軸架するとともに、図1に示す右側のハンドル
杆6の内側方にはチェンジレバー23を装備して構成す
るとともに、車体は前記フレーム1及び荷台22により
構成する。FIG. 2 is a side view schematically showing an agricultural carrier, in which a fuel tank 7 is installed between the middle portions of both handle bars 6 and 6 erected on the rear side in the traveling direction of the loading platform 22.
On both lower sides of the front part of the vehicle, two drive wheels 4, 4 that can be transmitted from the engine 2 on the frame 1 by the transmission member in the transmission cover 3 are mounted on the shaft, and the inner side of the right handlebar 6 shown in FIG. Is equipped with a change lever 23, and the vehicle body is constituted by the frame 1 and the carrier 22.
【0007】前記両駆動輪4、4の後方となる前記荷台
22の後部下方両側には、垂立した両支持筒8、8をフ
レーム1に固定して架設し、両支持筒8、8にそれぞれ
回動自由に嵌合したキングピン9、9の下端部には相互
に反対側の外側方に延出するL形支持板10、10の上
方一端部を固設し、両キングピン9、9の下端部にそれ
ぞれ固定して平行に前方へ延出する両ナックルアーム2
4、24の先端部間にはタイロッドとなる連結部材15
を回動自由に連結して構成するが、キングピン9、9は
支持筒8、8に固定して、一体的に形成するL形支持板
10、10及びナックルアーム24、24をキングピン
9、9に遊嵌して構成しても良く、また、両L形支持板
10、10の両端側垂立部に嵌挿して固定した軸筒2
5、25には、係止ピン26が長溝27に嵌合して所定
の角度だけ回動できるように横軸13、13をそれぞれ
嵌合し、両キングピン9、9の軸心9a、9a上に位置
するユニバーサルジョイント14、14を介して連結軸
16の両端を両横軸13、13の内端部にそれぞれ連結
し、両横軸13、13の内端部には前高後低に傾斜させ
た両支持アーム11、11の上端部をそれぞれ固設する
とともに、両支持アーム11、11の前傾及び後傾時に
はアーム側のピン28が支持板10、10側の係合ばね
29a及び29bに係合できるように設け、両支持アー
ム11、11の下部内方に軸架する両従動輪5、5の車
輪軸5a、5aが両キングピン9、9の軸心9a、9a
より車体内方側に偏寄して接近するよう、両支持アーム
11、11を車体内方側にそれぞれ屈折して構成する。On both lower sides of the rear of the loading platform 22 behind the driving wheels 4, 4, both upright supporting cylinders 8, 8 are fixedly mounted on the frame 1, and are mounted on the both supporting cylinders 8, 8. Upper ends of L-shaped support plates 10 and 10 extending outward and opposite to each other are fixed to lower ends of the king pins 9 and 9 respectively rotatably fitted. Both knuckle arms 2 fixed to the lower end and extending forward in parallel
A connecting member 15 serving as a tie rod is provided between the tip portions of 4 and 24.
Are rotatably connected to each other, but the king pins 9, 9 are fixed to the support cylinders 8, 8, and the L-shaped support plates 10, 10 and the knuckle arms 24, 24, which are integrally formed, are connected to the king pins 9, 9, And the shaft cylinder 2 fixedly inserted into the upright portions at both ends of both L-shaped support plates 10 and 10.
5 and 25, the horizontal shafts 13 and 13 are respectively fitted so that the locking pin 26 is fitted into the long groove 27 and can be rotated by a predetermined angle, and the center axes 9a and 9a of the two king pins 9 and 9 are fitted. The two ends of the connecting shaft 16 are connected to the inner ends of the two horizontal shafts 13 and 13 via the universal joints 14 and 14, respectively. The upper ends of the support arms 11, 11 are fixed respectively, and when the support arms 11, 11 are tilted forward and backward, the pins 28 on the arm side are engaged with the engagement springs 29a, 29b on the support plates 10, 10. , And the wheel shafts 5a, 5a of the driven wheels 5, 5, which extend inwardly below the support arms 11, 11, are connected to the shaft centers 9a, 9a of the king pins 9, 9, respectively.
The two support arms 11, 11 are each bent toward the inside of the vehicle body so as to be deviated closer to the inside of the vehicle body.
【0008】前記連結軸16の中間部には、上方の前後
にアジャスタ17a及びローラ17bを有する受動部材
17の下部を嵌合して固定し、該受動部材17の両側方
には後端にペダルを有する左右のペダル部材19、21
をそれぞれ架設するが、図1において左のペダル部材1
9の前部より垂設した支持板30の下部のボス31を前
記連結軸16に遊嵌し、ペダル部材19の上端部には前
記受動部材17のアジャスタ17aに衝合できる押圧部
材18を固設するとともに、ペダル部材19の中間部
が、フレーム1に固定されている上方の支持筒32の下
面に衝合するまで引っ張り付勢することができる引張り
ばね37をペダル部材19の上端部及び荷台22側のフ
レーム1に連繋し、また、前記支持筒32に中間部を枢
支した回動アーム33の下部には図1において右側のペ
ダル部材21の上部を固設し、回動アーム33の下部よ
り突設した枠体34の上部には前記受動部材17のロー
ラ17bに対し下方より衝合できる押圧部材20を突設
し、回動アーム33の上部には引張りばね35の荷台2
2側への引張りにより上方のフレーム1に衝合できるス
トッパー36を設けて構成する。A lower portion of a passive member 17 having an adjuster 17a and a roller 17b at the front and rear is fitted and fixed to an intermediate portion of the connecting shaft 16, and a pedal is provided on both sides of the passive member 17 at a rear end. Left and right pedal members 19 and 21 having
Are respectively installed, but the left pedal member 1 in FIG.
A boss 31 at a lower portion of a support plate 30 vertically suspended from the front of the connecting member 16 is loosely fitted to the connecting shaft 16, and a pressing member 18 capable of abutting against the adjuster 17 a of the passive member 17 is fixed to the upper end of the pedal member 19. At the same time, a tension spring 37 that can be urged until the middle portion of the pedal member 19 abuts against the lower surface of the upper support cylinder 32 fixed to the frame 1 is provided with a tension spring 37 at the upper end of the pedal member 19 and the carrier. The upper part of the pedal member 21 on the right side in FIG. 1 is fixed to the lower part of the turning arm 33 which is connected to the frame 1 on the side of the A pressing member 20 that can abut against the roller 17b of the passive member 17 from below is projected from an upper portion of the frame body 34 projecting from a lower portion, and a loading platform 2 of a tension spring 35 is provided above the rotating arm 33.
A stopper 36 is provided which can be brought into abutment with the upper frame 1 by being pulled to the two sides.
【0009】したがって、両駆動輪4、4により走行し
ながら両従動輪5、5が従動する状態で、両従動輪5、
5の車輪軸5a、5aは両キングピン9、9の軸心9
a、9aの内側方にそれぞれ位置して同様に回動するよ
う軸架されているので、例えば圃場の畝間を走行する場
合、両従動輪5、5の一方が畝に乗り上げようとすると
この従動輪5は畝の傾斜面を降りようとする力が働き、
このとき他方の従動輪5は地面より浮いた状態となり、
両従動輪5、5は両キングピン9、9の軸心9a、9a
中心にそれぞれ同様に回動して畝の傾斜面を降りようと
するため、車体の直進性が損われることなく直進性を保
持して有効に畝間を走行できる。Therefore, in a state where the driven wheels 5, 5 are driven while traveling by the driven wheels 4, 4, the driven wheels 5, 5 are driven.
The wheel shafts 5a, 5a of 5 are the center axes 9 of both kingpins 9, 9.
a, 9a, are pivoted so as to rotate similarly, so that, for example, when traveling between ridges in a field, if one of the driven wheels 5, 5 tries to ride on the ridges, The driving wheel 5 is acted on by a force trying to descend the slope of the ridge,
At this time, the other driven wheel 5 floats above the ground,
The two driven wheels 5, 5 are provided with shaft centers 9a, 9a of both king pins 9, 9, respectively.
Since the vehicle is turned around in the same manner and tries to descend on the inclined surface of the ridge, the vehicle can travel in the ridge effectively while maintaining the straightness without impairing the straightness of the vehicle body.
【0010】また、両従動輪5、5はそれぞれキングピ
ン9、9の軸心9a、9a中心に同様に回動しながら従
動することになるが、機体を矢印イで示す前進から後進
に切換える場合には、図9に示すようにペダル部材19
を、ローラ17bが押圧部材20に当たるまで矢印ロで
示すように踏み込むと、押圧部材18がアジャスタ17
aを押圧しながら連結軸16を係止ピン26が長溝27
の他端部に当たるまで回動させることになって両支持ア
ーム11、11を図9に示すように後傾状態に振り換え
操作できることになり、また、機体を後進状態から前進
に切り換える場合には、図8に示すようにペダル部材2
1を矢印ハで示すように踏み込むと、押圧部材20がロ
ーラ17bに当たって連結軸16を回動させながら両支
持アーム11、11を後傾状態に振り換え操作できるこ
とになる。The driven wheels 5, 5 are driven while rotating about the shaft centers 9a, 9a of the king pins 9, 9, respectively. As shown in FIG.
Is pressed down as shown by the arrow B until the roller 17b hits the pressing member 20, and the pressing member 18
a, the locking pin 26 engages the connecting shaft 16 while pressing the
In this case, the two support arms 11, 11 can be switched to the rearwardly inclined state as shown in FIG. 9, and the body can be switched from the reverse state to the forward state. As shown in FIG.
When the step 1 is depressed as shown by the arrow C, the support member 11 can be switched to the backward tilted state while the pressing member 20 hits the roller 17b and rotates the connecting shaft 16.
【0011】[0011]
【考案の効果】このように本考案は、両従動輪(5)、
(5)はそれぞれキングピン(9)、(9)の軸心(9
a)、(9a)中心に同様に回動しながら従動すること
になるが、機体を前進から後進に、また、後進から前進
に切り換える場合、両従動輪(5)、(5)がいずれの
方向に向いていても、両ペダル部材(19)、(21)
の一方を踏み込むだけで、受動部材(17)を正逆方向
にそれぞれ回動させながら両支持アーム(11)、(1
1)を同時に前後方向に振り換えることができることに
なって、連搬車に荷物を積んでいる場合でも、キヤスタ
形両従動輪(5)、(5)の向きを簡単容易に振り換え
ることができることになり、安全で走行安定性の良い運
搬車にして好適に実施できる特長を有する。[Effects of the Invention] As described above, the present invention provides two driven wheels (5),
(5) is the axis (9) of the kingpin (9) and (9), respectively.
(a), (9a) In the same manner, the vehicle is driven while rotating around the center, but when the body is switched from forward to reverse and from reverse to forward, both driven wheels (5) and (5) Both pedal members (19), (21)
Of the two supporting arms (11), (1) while rotating the passive member (17) in the forward and reverse directions by simply stepping on one of
1) can be simultaneously moved in the front-rear direction, so that even when luggage is loaded on a continuous guided vehicle, the directions of the caster type driven wheels (5) and (5) can be easily and easily changed. This has the advantage that it can be implemented in a transport vehicle that is safe and has good running stability.
【図1】本考案実施例の農用運搬車を概略示した背面図
である。FIG. 1 is a rear view schematically illustrating an agricultural vehicle according to an embodiment of the present invention.
【図2】図1の側面を概略示した側面図である。FIG. 2 is a side view schematically showing the side surface of FIG. 1;
【図3】図2を概略示した平面図であるFIG. 3 is a plan view schematically showing FIG. 2;
【図4】図2の一部を拡大し断面にして示した側断面図
である。FIG. 4 is a side sectional view showing a part of FIG. 2 in an enlarged and sectional view.
【図5】図1の一部を拡大して示した平面図である。FIG. 5 is an enlarged plan view showing a part of FIG. 1;
【図6】図5の一部を断面にして示した縦断面図であ
る。FIG. 6 is a longitudinal sectional view showing a part of FIG. 5 in section.
【図7】図4の一部を示した側面図である。FIG. 7 is a side view showing a part of FIG. 4;
【図8】図7の作動状態を示した側面図である。FIG. 8 is a side view showing the operation state of FIG. 7;
【図9】図7の作動状態を示した側面図である。FIG. 9 is a side view showing the operation state of FIG. 7;
4 駆動輪 5 従動輪 9 キングピン 10 L形支持板 11 支持アーム 13 横軸 14 ユニバーサルジョイント 16 連結軸 17 受動部材 19、21 ペダル部材 Reference Signs List 4 drive wheel 5 driven wheel 9 kingpin 10 L-shaped support plate 11 support arm 13 horizontal shaft 14 universal joint 16 connection shaft 17 passive member 19, 21 pedal member
Claims (1)
よう両駆動輪(4)、(4)及びキヤスタ形の両従動輪
(5)、(5)をそれぞれ配備して構成する運搬車にお
いて、車体の両側に垂立状に架設した両キングピン
(9)、(9)の下部には、同じ方向に回動するよう連
動連繋した両L形支持板(10)、(10)の上部をそ
れぞれ軸支するとともに、両L形支持板(10)、(1
0)の下部に軸架した横軸(13)、(13)には、下
部に従動輪(5)、(5)を軸架して前後方向に振替自
在とした両支持アーム(11)、(11)の上部をそれ
ぞれ連結し、前記キングピン(9)、(9)の軸心(9
a)、(9a)上に位置するユニバーサルジョイント
(14)、(14)を介して連結軸(16)の両端を前
記両横軸(13)、(13)にそれぞれ連結し、前記連
結軸(16)の途中に設けた受動部材(17)をそれぞ
れ反対方向に回動させることができる両ペダル部材(1
9)、(21)の一方の踏込みによりそれぞれ反対方向
に回動操作可能にして構成したことを特徴とする従動輪
方向切換装置。1. A transport vehicle in which both drive wheels (4), (4) and both caster-type driven wheels (5), (5) are respectively disposed so as to be located in front of and behind both sides in a traveling direction of a lower part of a vehicle body. The lower portions of both king pins (9) and (9) which are vertically installed on both sides of the vehicle body are provided with upper portions of both L-shaped support plates (10) and (10) which are interlockingly connected to rotate in the same direction. Each L-shaped support plate (10), (1
On the horizontal shafts (13) and (13) mounted on the lower part of (0), the two supporting arms (11) which are mounted on the lower driven wheels (5) and (5) and which can be freely moved in the front-rear direction, The upper portions of (11) are connected to each other, and the axis (9) of the king pins (9) and (9) is connected.
a) and (9a), the two ends of the connecting shaft (16) are connected to the two horizontal shafts (13) and (13) via universal joints (14) and (14), respectively. The two pedal members (1) capable of rotating the passive member (17) provided in the middle of the 16) in the opposite directions.
9) A driven wheel direction switching device characterized in that it can be rotated in the opposite direction by depressing one of the steps (21) and (21).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4942193U JP2554964Y2 (en) | 1993-07-28 | 1993-07-28 | Driven wheel direction switching device for trucks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4942193U JP2554964Y2 (en) | 1993-07-28 | 1993-07-28 | Driven wheel direction switching device for trucks |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0711474U JPH0711474U (en) | 1995-02-21 |
JP2554964Y2 true JP2554964Y2 (en) | 1997-11-19 |
Family
ID=12830622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4942193U Expired - Fee Related JP2554964Y2 (en) | 1993-07-28 | 1993-07-28 | Driven wheel direction switching device for trucks |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2554964Y2 (en) |
-
1993
- 1993-07-28 JP JP4942193U patent/JP2554964Y2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0711474U (en) | 1995-02-21 |
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