JPH0132612Y2 - - Google Patents
Info
- Publication number
- JPH0132612Y2 JPH0132612Y2 JP338384U JP338384U JPH0132612Y2 JP H0132612 Y2 JPH0132612 Y2 JP H0132612Y2 JP 338384 U JP338384 U JP 338384U JP 338384 U JP338384 U JP 338384U JP H0132612 Y2 JPH0132612 Y2 JP H0132612Y2
- Authority
- JP
- Japan
- Prior art keywords
- lock
- steering
- lever
- rear wheel
- operating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002184 metal Substances 0.000 description 11
- 230000007935 neutral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、前輪操向と後輪操向が可能なように
構成した、例えばトラツククレーン車等の4輪駆
動車両の後輪操向をロツクするための後輪操向ロ
ツク装置に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention locks the rear wheel steering of a four-wheel drive vehicle such as a truck crane, which is configured to allow front wheel steering and rear wheel steering. This invention relates to a rear wheel steering lock device for a vehicle.
従来技術
上記のような4輪駆動車両においては通常の道
路上での高速走行は前輪操向で走行するが、現場
内移動は前後輪操向で小回りをきかせて走行を行
なう。このような操向操作の選択は前後輪操向に
よると車両の回転半径が非常に小さくなるため、
高速走行中にこれを用いると転倒の虞れがあるか
らである。Prior Art In a four-wheel drive vehicle such as the one described above, the front wheels are steered when driving at high speeds on normal roads, but when moving within a site, the front and rear wheels are steered to make small turns. This type of steering operation selection is necessary because the turning radius of the vehicle becomes very small when front and rear wheel steering is used.
This is because there is a risk of falling if you use this while driving at high speed.
このため上記4輪駆動車両にあつては、前輪操
向と後輪操向とは適宜選択的に切り換えて用いら
れるようになつているが、前輪操向の場合は後輪
が操向機構との連結が断たれているので、これが
遊動して車両が蛇行する危険があり、従つて上記
前輪操向による高速走行の際には後輪を走行方向
に向けて人為的にロツクする必要がある。 For this reason, in the above-mentioned four-wheel drive vehicle, front wheel steering and rear wheel steering are selectively switched as appropriate, but in the case of front wheel steering, the rear wheels are the steering mechanism. Since the connection between the two wheels is disconnected, there is a risk that the wheels may drift and cause the vehicle to meander.Therefore, when driving at high speed by steering the front wheels as described above, it is necessary to manually lock the rear wheels in the direction of travel. .
このような後輪操向ロツク装置の従来技術とし
ては実開昭56−168475号公報、実開昭57−121371
号公報、及び特開昭57−175469号公報に記載され
たものがあるが、前者の場合は、作業者が後輪ア
クスル部分に潜り込んでロツクバーをナツクルア
ームとアクスル間に渡し込み、ナツクルアームが
動作不可能になるようにロツクする手段であり、
また後者の場合は、作業者が運転席にて電気−油
圧制御にてロツクピンを遠隔操作する手段であ
る。 Conventional technologies for such a rear wheel steering lock device include Japanese Utility Model Application No. 56-168475 and Japanese Utility Model Application No. 57-121371.
In the former case, the worker sneaks into the rear wheel axle and passes the lock bar between the knuckle arm and the axle, causing the knuckle arm to become inoperable. It is a means of locking in such a way that it becomes possible.
In the latter case, the lock pin is remotely operated by an operator from the driver's seat using electro-hydraulic control.
上記各従来例において、前者の従来例にあつて
は運転席からの遠隔操作によるロツク及び解除が
できない不便があり、後者は運転席からの遠隔操
作によるロツク及び解除が可能であるが、装置の
構成が複雑でコストが高くなるという問題があつ
た。 In each of the above conventional examples, the former conventional example has the inconvenience of not being able to lock and release by remote control from the driver's seat, while the latter can be locked and released by remote control from the driver's seat, but the device The problem was that the configuration was complicated and the cost was high.
考案の目的
本考案は上記のことにかんがみなされたもの
で、後輪操向のロツク及び解除を運転席から遠隔
的に行なうことができ、しかもその構成を機械的
なリンク機構により極めて簡単に構成できるよう
にした後輪操向ロツク装置を提供しようとするも
のである。Purpose of the invention The present invention was developed in consideration of the above-mentioned problems, and it is possible to remotely lock and release rear wheel steering from the driver's seat, and the structure is extremely simple using a mechanical link mechanism. It is an object of the present invention to provide a rear wheel steering lock device that allows the rear wheel steering to be locked.
考案の構成
後輪操向装置側の作動部材に固着したロツク金
具7,7′とアクスル側に固着した固定部材9,
9′とをロツクピン11,11′にて係脱可能にし
た後輪操向ロツク装置において、操向操作用の油
圧回路内に、ロツク位置と解除位置とを有するロ
ツク弁3を介装し、このロツク弁3の操作部を接
続機構にて操作レバー14,14′に接続し、ま
た上記ロツクピン11,11′と操作レバー14,
14′とを、解除方向にルーズ作用をするリーズ
ばね装置13,13′を介装した機械的な押引装
置を介して連結し、操作レバーを回動することに
よりロツクピンを運転席にて遠隔操作することが
できるようになつている。Structure of the device Locking metal fittings 7, 7' fixed to the operating member on the rear wheel steering device side and fixing members 9 fixed to the axle side.
9' can be engaged and disengaged by lock pins 11 and 11', a lock valve 3 having a lock position and a release position is interposed in the hydraulic circuit for steering operation, The operating portion of the lock valve 3 is connected to the operating levers 14, 14' by a connecting mechanism, and the lock pins 11, 11' and the operating lever 14,
14' are connected to each other via a mechanical push/pull device interposed with Lees spring devices 13 and 13' that act loosely in the release direction, and by rotating the operating lever, the lock pin can be remotely operated from the driver's seat. It is now possible to operate.
実施例
以下本考案の実施例を図面に基づいて説明す
る。Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.
図中1は電磁式の操向モード切換弁であり、こ
の操向モード切換弁1は中立位置aと、4輪操向
位置bと、蟹操向位置cとを有している。そして
常時中立位置aにばね付勢されている。この操向
モード切換弁1の両側にある電磁作動部(ソレノ
イド)は操向モード切換スイツチ2に接続されて
いる。上記操向モード切換弁1の一次側にはロツ
ク位置と連通位置を有するロツク弁3を介して操
向操作弁4及び前輪操向用の油圧シリンダ5,5
が接続されている。なお上記操向操作弁4の一次
側に油圧源が接続されている。操向モード切換弁
1の二次側には後輪操向用の油圧シリンダ6,6
が接続されている。 In the figure, reference numeral 1 denotes an electromagnetic steering mode switching valve, and this steering mode switching valve 1 has a neutral position a, a four-wheel steering position b, and a crab steering position c. And it is always biased by a spring to the neutral position a. Electromagnetic operating parts (solenoids) on both sides of the steering mode switching valve 1 are connected to a steering mode switching switch 2. A steering operation valve 4 and hydraulic cylinders 5, 5 for front wheel steering are connected to the primary side of the steering mode switching valve 1 via a lock valve 3 having a lock position and a communicating position.
is connected. Note that a hydraulic power source is connected to the primary side of the steering operation valve 4. On the secondary side of the steering mode switching valve 1, there are hydraulic cylinders 6, 6 for steering the rear wheels.
is connected.
7はロツク用金具で、この金具7は後輪操向装
置側の作動部材、例えばナツクルアームに固着し
てあり、後輪操向操作時にナツクルアームと共に
作動するようになつている。このロツク用金具7
にはロツク穴8が設けてある。9は上記ロツク金
具7に対向して設けた固定部材で、この固定部材
9はアクスル側に固着されている。そしてこの固
定部材9にもロツク穴10が設けてあり、後輪が
直進方向を向いた状態でロツク用金具7と固定部
材9の両ロツク穴8,10とが一致するようにな
つている。11は上記両ロツク穴8,10に嵌合
するロツクピンであり、このロツクピン11はア
クスル側に設けた回動レバー12の一端に連結さ
れており、この回動レバー12を回動することに
より係脱するようになつている。そして上記回動
レバー12の他端部はロツク解除時にルーズ作用
をするルーズばね装置13及びリンク機構を介し
て操作レバー14に連結してある。この操作レバ
ー14には上記ロツク弁3がリンク機構15を介
して連結してあり、操作レバー14をロツク方向
に回動したときにロツク弁3をロツク位置に切換
わり、解除方向に回動したときに連通位置に切換
わるようになつている。なおこのリンク機構15
内にもロツク作動時にルーズ作用をするルーズば
ね装置を介装してもよい。16は逆操向補正弁で
ある。 Reference numeral 7 denotes a locking metal fitting. This metal fitting 7 is fixed to an operating member on the rear wheel steering device side, for example, a knuckle arm, and is adapted to operate together with the knuckle arm when the rear wheel is steered. This lock fitting 7
is provided with a lock hole 8. Reference numeral 9 denotes a fixing member provided opposite the lock fitting 7, and this fixing member 9 is fixed to the axle side. The fixing member 9 is also provided with a locking hole 10, so that the locking fitting 7 and the locking holes 8, 10 of the fixing member 9 are aligned with each other when the rear wheel faces in the straight-ahead direction. Numeral 11 is a lock pin that fits into both the lock holes 8 and 10. This lock pin 11 is connected to one end of a rotating lever 12 provided on the axle side, and is engaged by rotating this rotating lever 12. It's starting to come off. The other end of the rotary lever 12 is connected to an operating lever 14 via a link mechanism and a loose spring device 13 that acts loosely when the lock is released. The lock valve 3 is connected to the operating lever 14 via a link mechanism 15, and when the operating lever 14 is rotated in the locking direction, the locking valve 3 is switched to the locking position and rotated in the unlocking direction. It is designed so that it can sometimes be switched to the communicating position. Note that this link mechanism 15
A loose spring device may be interposed inside the lock to provide a loose action when the lock is activated. 16 is a reverse steering correction valve.
上記操作レバー14は運転室内に設けられてい
るが、運転室が車体に対して旋回するような構造
になつている場合には、運転室の旋回半径より外
側の近傍において車体シヤーシフレーム側で、か
つ運転席より手の届く範囲に設置されている。 The operating lever 14 is installed inside the driver's cab, but if the driver's cab is structured to rotate relative to the vehicle body, it may be placed on the chassis frame side of the vehicle near the outside of the turning radius of the driver's cab. , and is located within arm's reach from the driver's seat.
上記構成において、操作レバー14を解除方向
に回動した状態で操向モード切換弁1及び操向操
作弁4を操作することにより4輪操向あるいは蟹
操向操作がなされる。 In the above configuration, four-wheel steering or crab steering operation is performed by operating the steering mode switching valve 1 and the steering operation valve 4 while the operation lever 14 is rotated in the release direction.
上記操向操作時において、後輪が直進状態にあ
るときに操作レバー14をロツク方向に回動する
と、回動レバー12を介してロツクピン11が下
方へ作動されてロツク金具7及び固定金具9の両
穴8,10に嵌合され、両金具7,9が係合され
て後輪が直進状態でロツクされる。またこの後輪
のロツク状態時にあつてはロツク弁3が連動して
ロツク状態になり、操向モード切換弁1及び後輪
操向用の油圧シリダ6,6への圧油の供給が断た
れ、それ以後は前輪だけによる操向となる。 During the above-mentioned steering operation, when the operating lever 14 is rotated in the locking direction while the rear wheels are moving straight, the locking pin 11 is actuated downward via the rotating lever 12, and the locking metal fitting 7 and the fixing metal fitting 9 are moved downward. It is fitted into both holes 8 and 10, and both metal fittings 7 and 9 are engaged to lock the rear wheel in a straight-ahead state. Also, when the rear wheels are in the locked state, the lock valve 3 is interlocked and locked, and the supply of pressure oil to the steering mode switching valve 1 and the hydraulic cylinders 6, 6 for steering the rear wheels is cut off. After that, the vehicle will be steered only by the front wheels.
操作レバー14を解除状態にすると、ロツクピ
ン11はレーズばね装置13を介してロツク金具
7の穴8より離隔する方向に作動される。このと
き、ロツクピン11はロツク金具7及び固定金具
9の両穴8,10に強く係合している場合でも、
ルーズばね装置13のばねが撓んで操作レバー1
4は解除方向に回動してロツク弁3が連通位置に
切換えられ、後輪の操作が可能になる。従つて、
この状態で後輪を左あるいは右方向に少し操向し
て上記両金具7,9を相対移動することにより上
記ロツクピン11の係合がゆるめられ、ロツクピ
ン11はルーズばね装置13のばね力により離脱
される。 When the operating lever 14 is released, the lock pin 11 is actuated via the lasing spring device 13 in a direction away from the hole 8 of the lock fitting 7. At this time, even if the lock pin 11 is strongly engaged with both the holes 8 and 10 of the locking metal fitting 7 and the fixing metal fitting 9,
The spring of the loose spring device 13 bends and the operating lever 1
The lock valve 4 is rotated in the release direction, and the lock valve 3 is switched to the communicating position, allowing the rear wheels to be operated. Therefore,
In this state, by slightly steering the rear wheel to the left or right to move the two metal fittings 7 and 9 relative to each other, the engagement of the lock pin 11 is loosened, and the lock pin 11 is released by the spring force of the loose spring device 13. be done.
上記ロツクピン11の係脱及びロツク弁3の切
換操作は上記したように、運転席における操作レ
バー14の操作により遠隔操作される。 As described above, the engagement and disengagement of the lock pin 11 and the switching operation of the lock valve 3 are remotely controlled by operating the control lever 14 from the driver's seat.
第2図以下は本考案の他の実施例で、操作レバ
ー14′とロツクピン11′とをルーズばね装置1
3′とケーブル17とを介して連結し、また操作
レバー14′とロツク弁3とを電気的に接続した
例を示す。 FIG. 2 and the following are other embodiments of the present invention, in which the operating lever 14' and the lock pin 11' are connected to a loose spring device 1.
3' and a cable 17, and an example in which the control lever 14' and the lock valve 3 are electrically connected.
以下その構成及び作用を説明する。 The structure and operation will be explained below.
操作レバー14′は一方向に回動可能に支持し
たボス部材18に対して直角方向に回動自在にし
たレバー部材19とからなつており、このレバー
部材19はu字状のガイド溝20に係合してい
て、レバー部材19をガイド溝20に沿つて回動
することによりボス部材18が一方向に回動さ
れ、かつ回動端に保持されるようになつている。
ボス部材18にはリンク機構21を介して回動レ
バー22に連結されており、この回動レバー22
にルーズばね装置13′及びケーブル17を介し
てロツクピン11′が連結されている。また上記
回動レバー22にはレバー23が設けてあり、こ
のレバー23に対向する位置に図示しない操向モ
ード切換弁の電気回路内に介装した切換スイツチ
24が設けてある。 The operating lever 14' consists of a lever member 19 that is rotatable in a right angle direction with respect to a boss member 18 that is supported rotatably in one direction, and this lever member 19 is fitted into a U-shaped guide groove 20. When the lever member 19 is rotated along the guide groove 20, the boss member 18 is rotated in one direction and held at the rotation end.
The boss member 18 is connected to a rotating lever 22 via a link mechanism 21, and this rotating lever 22
A locking pin 11' is connected to the locking pin 11' via a loose spring device 13' and a cable 17. Further, the rotary lever 22 is provided with a lever 23, and at a position opposite to this lever 23 is provided a changeover switch 24 interposed in an electric circuit of a steering mode changeover valve (not shown).
しかして操作レバー14′のレバー部材19を
操作してそのボス部材18をロツク方向に回動す
ると、回動レバー22を介してケーブル17が押
動されてロツクピン11′はロツク用金具7′と固
定部材9′の両穴8′,10′に係合して両金具7,
9をロツク状態にする。このとき回動レバー22
のレバー23により切換スイツチ24がOFFと
なり、図示しない操向モード切換弁への通電が断
たれてこれが中立位置になり後輪操向が不能にな
る。 When the lever member 19 of the operating lever 14' is operated to rotate the boss member 18 in the locking direction, the cable 17 is pushed through the rotation lever 22, and the locking pin 11' is engaged with the locking metal fitting 7'. Both metal fittings 7, are engaged with both holes 8', 10' of fixing member 9'.
9 into the locked state. At this time, the rotating lever 22
The changeover switch 24 is turned OFF by the lever 23, and the power supply to the steering mode changeover valve (not shown) is cut off, so that it becomes a neutral position and the rear wheels cannot be steered.
操作レバー14′のボス部材18を解除方向に
回動すると、回動レバー22及びルーズばね装置
13′を介してケーブル17が引つぱられ、ロツ
クピン11′がロツク用金具7′から離脱される。
このときのルーズばね装置13′は上記第1の実
施例と同一の作用をなし、ロツクピン11′がロ
ツク用金具7′からはずれない状態でも操作レバ
ー14′が解除方向に回動され、切換スイツチ2
4がONとなり、操向モード切換弁が4輪操向位
置及び蟹操向位置の双方への切換可能となる。 When the boss member 18 of the operation lever 14' is rotated in the release direction, the cable 17 is pulled via the rotation lever 22 and the loose spring device 13', and the lock pin 11' is separated from the lock fitting 7'.
The loose spring device 13' at this time has the same effect as in the first embodiment, and even if the lock pin 11' is not removed from the lock fitting 7', the operating lever 14' is rotated in the release direction, and the changeover switch is 2
4 is turned on, and the steering mode switching valve can be switched to both the four-wheel steering position and the crab steering position.
考案の効果
本考案は上記のようになるから、後輪操向のロ
ツク及び解除を運転席から遠隔的に行なうことが
でき、しかもその構成を機械的なリンク機構にて
極めて簡単に構成することができる。また操作レ
バー14,14′とロツクピン11,11′との間
に解除作動方向にルーズ作用を行なうルーズばね
装置13,13′を介装したことにより、操作レ
バー14,14′の解除操作によつても仮にロツ
クピン11,11′が解除作動しなくても操作レ
バー14,14′を解除状態にすることができ、
これに連動する切換弁をロツク解除方向に作動す
ることができる。Effects of the invention Since the invention is as described above, it is possible to lock and release the rear wheel steering remotely from the driver's seat, and the configuration is extremely simple using a mechanical link mechanism. I can do it. In addition, loose spring devices 13, 13' are interposed between the operating levers 14, 14' and the lock pins 11, 11' to provide a loose action in the direction of release operation, so that the release operation of the operating levers 14, 14' Even if the lock pins 11, 11' do not release, the operating levers 14, 14' can be brought into the released state.
The switching valve interlocked with this can be operated in the unlocking direction.
図面は本考案の実施例を示すもので、第1図は
油圧回路を含む概略的な構成説明図、第2図以下
は本考案の他の実施例例を示すもので、第2図は
一部破断側面図、第3図は一部破断正面図、第4
図は第3図の線矢視図である。
7,7はロツク金具、9,9′は固定部材、1
1,11′はロツクピン、13,13′はルーズば
ね装置。
The drawings show an embodiment of the present invention, and Fig. 1 is a schematic structural explanatory diagram including a hydraulic circuit, and Fig. 2 and the following show other embodiments of the invention. Partly broken side view, Figure 3 is partially broken front view, Figure 4 is partially broken side view.
The figure is a view taken along the line in FIG. 3. 7, 7 are lock fittings, 9, 9' are fixing members, 1
1 and 11' are lock pins, and 13 and 13' are loose spring devices.
Claims (1)
具7,7′とアクスル側に固着した固定部材9,
9′とをロツクピン11,11′にて係脱可能にし
た後輪操向ロツク装置において、 操向操作用の油圧回路内に、ロツク位置と解除
位置とを有するロツク弁3を介装し、このロツク
弁3の操作部を接続機構にて操作レバー14,1
4′に接続し、また上記ロツクピン11,11′と
操作レバー14,14′とを、解除方向にルーズ
作用をするリーズばね装置13,13′を介装し
た機械的な押引装置を介して連結したことを特徴
とする後輪操向ロツク装置。[Scope of Claim for Utility Model Registration] Locking fittings 7, 7' fixed to the operating member on the rear wheel steering device side and fixing member 9 fixed on the axle side,
9' can be engaged and disengaged by lock pins 11, 11', a lock valve 3 having a lock position and a release position is interposed in the hydraulic circuit for steering operation, The operating portion of this lock valve 3 is connected to the operating levers 14 and 1 by a connecting mechanism.
4', and also connects the lock pins 11, 11' and the operating levers 14, 14' via a mechanical push/pull device interposed with a Lees spring device 13, 13' that acts loosely in the release direction. A rear wheel steering lock device characterized by being connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP338384U JPS60115778U (en) | 1984-01-17 | 1984-01-17 | Rear wheel steering lock device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP338384U JPS60115778U (en) | 1984-01-17 | 1984-01-17 | Rear wheel steering lock device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60115778U JPS60115778U (en) | 1985-08-05 |
JPH0132612Y2 true JPH0132612Y2 (en) | 1989-10-04 |
Family
ID=30477957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP338384U Granted JPS60115778U (en) | 1984-01-17 | 1984-01-17 | Rear wheel steering lock device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60115778U (en) |
-
1984
- 1984-01-17 JP JP338384U patent/JPS60115778U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60115778U (en) | 1985-08-05 |
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