JPH0423956Y2 - - Google Patents
Info
- Publication number
- JPH0423956Y2 JPH0423956Y2 JP10196886U JP10196886U JPH0423956Y2 JP H0423956 Y2 JPH0423956 Y2 JP H0423956Y2 JP 10196886 U JP10196886 U JP 10196886U JP 10196886 U JP10196886 U JP 10196886U JP H0423956 Y2 JPH0423956 Y2 JP H0423956Y2
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic cylinder
- working device
- valve
- hydraulic
- coupling
- 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
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Shovels (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、係止部材の出退操作に基づいて、作
業装置に対する係止連結状態と、連結解除状態と
に切換自在な連結装置を、前記機体の作業装置取
付部に設け、前記作業装置に作業装置駆動用油圧
シリンダを設けると共に、前記作業装置駆動用油
圧シリンダに対するサービスポート用操作弁を前
記機体の油圧操作用回路に設けてある作業車に関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a coupling device that can be switched between a locked connection state and a disconnection state with respect to a working device based on the movement of a locking member into and out. A work in which a hydraulic cylinder for driving the working device is provided in the working device mounting portion of the machine body, and a hydraulic cylinder for driving the working device is provided in the working device, and a service port operating valve for the hydraulic cylinder for driving the working device is provided in the hydraulic operating circuit of the machine body. About cars.
従来上記作業車では、手動により係止部材を出
退させるように形成してあつた。
Conventionally, in the above-mentioned work vehicle, the locking member was configured to be moved in and out manually.
しかし、機体の作業装置取付部に作業装置を着
脱させる際に、連結装置を作業装置に対して係止
連結状態又は連結解除状態にするためには、機体
の運転座席から操縦者が降りて、連結装置におけ
る係止部材を出退させなければならず作業が煩わ
しいという欠点があつた。
However, when attaching/detaching the work equipment to/from the work equipment mounting portion of the aircraft, in order to place the coupling device in the locked/uncoupled state with respect to the work equipment, the operator must step out of the driver's seat of the aircraft, and then This has the disadvantage that the locking member in the coupling device must be moved in and out, making the work cumbersome.
本考案の目的は、操縦者が運転座席から降りな
くても係止部材を出退操作できるようにする点に
ある。 An object of the present invention is to enable the operator to move the locking member in and out without getting off the driver's seat.
本考案における作業車の油圧回路は、圧油供給
に伴つて係止部材を突出させ、且つ、圧油排出に
伴つて前記係止部材を引退させる連結用油圧シリ
ンダを連結装置に設け、作業装置駆動用油圧シリ
ンダに対して接続切離し自在なカプラーと、前記
連結用油圧シリンダとをサービスポート用操作弁
に並列接続し、前記操作弁と連結用油圧シリンダ
との間に、前記操作弁の正逆油路切換操作に伴つ
て、前記操作弁からの往復２本の油路の内の圧油
供給側の油路を択一的に前記連結用油圧シリンダ
に接続するシヤトル弁を設け、前記操作弁に、前
記連結用油圧シリンダ内の圧油を排出するための
油圧力解除用切換位置を設けてあることにあり、
その作用効果は、次の通りである。
The hydraulic circuit of the working vehicle according to the present invention is provided with a coupling hydraulic cylinder in the coupling device that causes the locking member to protrude as pressure oil is supplied and retires the locking member as the pressure oil is discharged, and A coupler that can be freely connected to and disconnected from the driving hydraulic cylinder and the connecting hydraulic cylinder are connected in parallel to the service port operating valve, and between the operating valve and the connecting hydraulic cylinder there is a connection between the operating valve and the connecting hydraulic cylinder. A shuttle valve is provided that selectively connects a pressure oil supply side oil passage of two reciprocating oil passages from the operation valve to the coupling hydraulic cylinder in conjunction with the oil passage switching operation, and the operation valve further comprising a hydraulic pressure release switching position for discharging the pressure oil in the coupling hydraulic cylinder;
Its effects are as follows.
つまり、運転座席に操縦者が座したまま、サー
ビスポート用操作弁を正逆油路切換操作するだけ
で、操作弁からの往復２本の油路の内の圧油供給
側の油路が、シヤトル弁によつて連結用油圧シリ
ンダに接続され、圧油供給された連結用油圧シリ
ンダが係止部材を突出させて、連結装置を作業装
置に対する係止連結状態にし得ると共に、前記サ
ービスポート用操作弁を油圧力解除用切換位置に
切換操作するだけで、連結用油圧シリンダ内の圧
油は排出され、係止部材を引退させて、連結装置
を作業装置に対する連結解除状態にし得る。
In other words, by simply operating the service port operation valve to switch between the forward and reverse oil paths while the operator is sitting in the driver's seat, the oil path on the pressure oil supply side of the two reciprocating oil paths from the operation valve can be changed. The connecting hydraulic cylinder, which is connected to the connecting hydraulic cylinder by a shuttle valve and supplied with pressure oil, can project the locking member to bring the connecting device into the locking connection state with respect to the working device, and also operate the service port. By simply switching the valve to the hydraulic release switching position, the pressure oil in the coupling hydraulic cylinder is discharged, the locking member is retired, and the coupling device can be disconnected from the working device.
従つて、連結装置を作業装置に対する連結及び
連結解除状態に操作するのに、運転座席から操縦
者が降りなくとも行えるために、作業装置の着脱
作業を簡単に効率良く行える。
Therefore, since the operator does not have to get off the driver's seat to connect and disconnect the coupling device to the working device, the work of attaching and detaching the working device can be done easily and efficiently.
その上、連結用油圧シリンダを油圧操作するの
に、機体の油圧操作用回路に既に設けてあるサー
ビスポート用操作弁を兼用し、且つ、その操作弁
に油圧力解除用切換位置を設けるだけの簡単な改
造だけでよいために、専用の操作用弁を新たに設
けるのに比して油圧回路全体の構造が簡単になる
と共に安価に製作できる。 Moreover, in order to hydraulically operate the connecting hydraulic cylinder, the service port operation valve already installed in the hydraulic operation circuit of the aircraft can also be used, and the operation valve only needs to be provided with a switching position for releasing the hydraulic pressure. Since only a simple modification is required, the overall structure of the hydraulic circuit is simpler and can be manufactured at a lower cost than when a dedicated operating valve is newly provided.
次に、本考案の実施例を、図面に基づいて説明
する。
Next, embodiments of the present invention will be described based on the drawings.
第７図に示すように、左右一対の前車輪１を備
えた前部車体２と、左右一対の後車輪３を備えた
後部車体４とを、縦軸芯Ｐ周りで相対揺動自在に
連結し、前部車体２に昇降操作自在に設けたアー
ム１２にバケツト５を着脱自在に装備すると共
に、後部車体４に搭乗運転部６、原動部７、及
び、バツクホウ装置８を装備し、そして、前後両
車体２，４に亘つて架設した油圧シリンダ９によ
りステアリングハンドル６ａの操作量に応じた量
だけ前後両車体２，４を相対駆動揺動させて車体
操向を行うように構成すると共に、原動部７にお
いてエンジン１０に連動連結した走行用ミツシヨ
ンケース１１からの変速動力を前車輪１及び後車
輪３に夫々伝達するように構成し、もつて、土砂
等の運搬作業並びに掘削作業を行う土工車を構成
してある。 As shown in FIG. 7, a front vehicle body 2 equipped with a pair of left and right front wheels 1 and a rear vehicle body 4 equipped with a pair of left and right rear wheels 3 are connected so as to be relatively swingable around a vertical axis P. A bucket belt 5 is detachably attached to an arm 12 provided on the front body 2 so as to be able to be raised and lowered, and the rear body 4 is equipped with a boarding and driving section 6, a driving section 7, and a backhoe device 8. A hydraulic cylinder 9 installed across both the front and rear vehicle bodies 2, 4 is configured to relatively drive and sway the front and rear vehicle bodies 2, 4 by an amount corresponding to the amount of operation of the steering handle 6a, and to perform vehicle direction. The driving unit 7 is configured to transmit variable speed power from a traveling transmission case 11 interlocked to an engine 10 to the front wheels 1 and the rear wheels 3, respectively, and is used to carry out work such as transporting earth and sand, etc. and excavation work. It consists of an earthmoving vehicle.
前記アーム１２の先端側には、第１図及び第２
図に示すように、バケツト５等の作業装置に対す
る作業装置取付部１２Ａを連設してあり、この作
業装置取付部１２Ａには、係止ピン１３の出退操
作に基づいて、バケツト５に対する係止連結状態
と、連結解除状態とに切換自在な連結装置１４を
設けてあると共に、係止ピン１３を出退させる連
結用油圧シリンダ１５を連結装置１４に設けてあ
る。 On the distal end side of the arm 12, there are shown figures 1 and 2.
As shown in the figure, a working device mounting portion 12A for a working device such as a bucket 5 is connected to the working device mounting portion 12A. The coupling device 14 is provided with a coupling device 14 that can be switched freely between a locked coupling state and a coupling release state, and a coupling hydraulic cylinder 15 for moving the locking pin 13 in and out.
前記バケツト５は、第４図乃至第６図に示すよ
うに、彎曲状底板１６の両側に側板１７，１７を
連設すると共に、底板１６及び側板１７，１７の
開口縁側に掘削爪１８を取付けてあるバケツト５
を、掘削土掻き込み方向に２分割形成し、両分割
バケツト５Ａ，５Ｂを、その各分割底板部分１６
Ａ，１６Ｂが相互に近接離間移動自在になるよう
に枢支連結すると共に、前記両分割底板部分１６
Ａ，１６Ｂを近接離間操作する油圧シリンダ１９
を設けてある。そして、油圧シリンダ１９による
両分割底板部分１６Ａ，１６Ｂの近接離間操作に
基づいて、第６図に示すように、木材やパイプ等
の長尺物を挾持して搬送できるように構成してあ
る。 As shown in FIGS. 4 to 6, the bucket 5 has side plates 17, 17 connected to both sides of a curved bottom plate 16, and digging claws 18 attached to the opening edges of the bottom plate 16 and side plates 17, 17. Aru Bucket 5
is formed into two parts in the excavated soil raking direction, and both divided buckets 5A and 5B are formed with their respective divided bottom plate parts 16.
A and 16B are pivotally connected so that they can move toward and away from each other, and both the divided bottom plate portions 16
Hydraulic cylinder 19 that operates A and 16B in close proximity and separation.
is provided. As shown in FIG. 6, the hydraulic cylinder 19 moves the two divided bottom plate portions 16A and 16B toward and away from each other, so that a long object such as a piece of wood or a pipe can be held and transported.
バケツト５を操作する機体の油圧操作用回路の
要部を構成するに、第３図に示すように、アーム
１２を昇降させるリフトシリンダ２０に対する油
圧操作を行う第１操作弁２１、及び、アーム１２
に対してバケツト５を上下揺動させるチルトシリ
ンダ２２に対する油圧操作用第２操作弁２３、並
びに、前記油圧シリンダ１９に対するサービスポ
ート要第３操作弁２４を、油圧ポンプに直列接続
し、前記作業装置駆動用油圧シリンダ１９に対し
て接続切離し自在なカプラー２５と、前記連結用
油圧シリンダ１５とを第３操作弁２４に並列接続
し、第３操作弁２４と連結用油圧シリンダ１５と
の間に、第３操作弁２４の正逆油路切換操作に伴
つて、第３操作弁２４からの往復２本の油路R1，
R2の内の圧油供給側の油路R1又はR2を択一的に
連結用油圧シリンダ１５に接続するシヤトル弁２
６を設け、前記第３操作弁２４に、正逆中立の３
切換位置の他に、連結用油圧シリンダ１５内の圧
油を排出するための油圧力解除用切換位置を設け
てある。 The main parts of the hydraulic operation circuit of the machine that operates the bucket 5 are, as shown in FIG.
A second operating valve 23 for hydraulic operation for the tilt cylinder 22 that vertically swings the bucket 5 against the hydraulic cylinder 19 and a third operating valve 24 for the service port for the hydraulic cylinder 19 are connected in series to the hydraulic pump, and the working device A coupler 25 that can be freely connected to and disconnected from the driving hydraulic cylinder 19 and the connecting hydraulic cylinder 15 are connected in parallel to the third operating valve 24, and between the third operating valve 24 and the connecting hydraulic cylinder 15, With the forward/reverse oil passage switching operation of the third operation valve 24, two oil passages R 1 , reciprocating from the third operation valve 24
Shuttle valve 2 that selectively connects oil passage R 1 or R 2 on the pressure oil supply side of R 2 to the coupling hydraulic cylinder 15
6 is provided, and the third operation valve 24 has three
In addition to the switching position, there is provided a hydraulic pressure release switching position for discharging the pressure oil in the coupling hydraulic cylinder 15.
前記連結装置１４における係止ピン１３は、バ
ケツト５に設けたブラケツト２７の係止穴２８に
対して、引退する方向に常時スプリング２９で付
勢されており、連結用油圧シリンダ１５に圧油を
供給するに伴つて係止ピン１３を突出させて係止
穴２８に係入可能になるように、且つ、圧油を排
出するに伴つ、係止ピン１３をスプリング２９の
付勢力によつて引退するのを許して、作業装置取
付部１２Ａからバケツト５を取外せるように、係
止ピン１３と連結用油圧シリンダ１５とがリンク
３０を介して連動連結してある。 The locking pin 13 in the connecting device 14 is always urged by a spring 29 in the direction of retiring from the locking hole 28 of the bracket 27 provided in the bucket 5, and pressurized oil is supplied to the connecting hydraulic cylinder 15. As the oil is supplied, the locking pin 13 is made to protrude and can be inserted into the locking hole 28, and as the pressure oil is discharged, the locking pin 13 is pushed by the biasing force of the spring 29. The locking pin 13 and the connecting hydraulic cylinder 15 are interlocked and connected via a link 30 so that the bucket 5 can be removed from the working device attachment part 12A after being allowed to retire.
尚、前記バケツト５の背面の左右上部には、第
２図及び第４図に示すように、作業装置取付部１
２Ａの左右上部に夫々設けた係止部３２を各別に
係止させる被係止部３１を設けてあり、従つて作
業装置取付部１２Ａにバケツト５を取付け固定す
る時は、係止部３２を被係止部３１に係止させる
と共に、係止ピン１３をブラケツト２７の係止穴
２８に係入させればよい。 In addition, as shown in FIGS. 2 and 4, on the left and right upper portions of the back surface of the bucket 5, there are working device mounting portions 1.
There are locking parts 31 that lock the locking parts 32 provided on the left and right upper parts of the work equipment mounting part 12A separately. It is sufficient that the locking pin 13 is engaged with the locking hole 28 of the bracket 27 while being locked with the locked portion 31 .
前記作業装置取付部１２Ａには、前記バケツト
５の他に、フオークや除雪機等の各種アタツチメ
ントを着脱自在である。
In addition to the bucket 5, various attachments such as a fork and a snow blower can be attached to and detached from the working device attachment portion 12A.
前記係止ピン１３に代え、出退する他の部材を
設けても良く、それらを係止部材と総称する。 Instead of the locking pin 13, other members that move in and out may be provided, and these are collectively referred to as locking members.
本考案は、シヨベルローダに限らず、作業装置
を着脱自在に取付ける他の作業車にも利用できる
ものである。 The present invention can be used not only for shovel loaders but also for other work vehicles to which work equipment is removably attached.
図面は本考案に係る作業車の油圧回路の実施例
を示し、第１図はバケツトと連結装置との連結構
造の断面を示す背面図、第２図は一部断面を示す
要部の側面図、第３図は概略油圧回路図、第４図
はバケツトと作業装置取付部との分解斜視図、第
５図及び第６図は、バケツトの作用説明図、第７
図は、土工車の全体側面図である。
５……作業装置、１２Ａ……作業装置取付部、
１３……係止部材、１４……連結装置、１５……
連結用油圧シリンダ、１９……油圧シリンダ、２
４……操作弁、２５……カプラー、２６……シヤ
トル弁、R1，R2……油路。
The drawings show an embodiment of the hydraulic circuit for a work vehicle according to the present invention, and FIG. 1 is a rear view showing a cross section of the connection structure between the bucket and the connecting device, and FIG. 2 is a side view of the main part showing a partial cross section. , FIG. 3 is a schematic hydraulic circuit diagram, FIG. 4 is an exploded perspective view of the bucket belt and the work equipment attachment part, FIGS. 5 and 6 are explanatory diagrams of the bucket belt, and FIG.
The figure is an overall side view of the earthmoving vehicle. 5... Working device, 12A... Working device mounting part,
13...Locking member, 14...Connection device, 15...
Connection hydraulic cylinder, 19...Hydraulic cylinder, 2
4...operation valve, 25...coupler, 26...shuttle valve, R1 , R2 ...oil line.
Claims (1)
５に対する係止連結状態と、連結解除状態とに切
換自在な連結装置１４を、前記機体の作業装置取
付部１２Ａに設け、前記作業装置５に作業装置駆
動用油圧シリンダ１９を設けると共に、前記作業
装置駆動用油圧シリンダ１９に対するサービスポ
ート用操作弁２４を前記機体の油圧操作用回路に
設けてある作業車において、圧油供給に伴つて前
記係止部材１３を突出させ、且つ、圧油排出に伴
つて前記係止部材１３を引退させる連結用油圧シ
リンダ１５を前記連結装置１４に設け、前記作業
装置駆動用油圧シリンダ１９に対して接続切離し
自在なカプラー２５と、前記連結用油圧シリンダ
１５とを前記操作弁２４に並列接続し、前記操作
弁２４と連結用油圧シリンダ１５との間に、前記
操作弁２４の正逆油路切換操作に伴つて、前記操
作弁２４からの往復２本の油路R1，R2の内の圧
油供給側の油路R1又はR2を択一的に前記連結用
油圧シリンダ１５に接続するシヤトル弁２６を設
け、前記操作弁２４に、前記連結用油圧シリンダ
１５内の圧油を排出するための油圧力解除用切換
位置を設けてある作業車の油圧回路。 A coupling device 14 that can be freely switched between a locked and connected state with respect to the working device 5 and a disconnected state based on the withdrawal/exit operation of the locking member 13 is provided in the working device mounting portion 12A of the machine body, and In a working vehicle in which a hydraulic cylinder 19 for driving a working device is provided in the hydraulic cylinder 19 for driving the working device, and a service port operating valve 24 for the hydraulic cylinder 19 for driving the working device is provided in the hydraulic operating circuit of the body, the The coupling device 14 is provided with a coupling hydraulic cylinder 15 that protrudes the locking member 13 and retires the locking member 13 as the pressure oil is discharged, and is disconnected from the working device driving hydraulic cylinder 19. A flexible coupler 25 and the connecting hydraulic cylinder 15 are connected in parallel to the operating valve 24, and a coupler 25 is connected between the operating valve 24 and the connecting hydraulic cylinder 15 to allow the operating valve 24 to switch between forward and reverse oil paths. Accordingly, a shuttle selectively connects the pressure oil supply side oil path R 1 or R 2 of the two reciprocating oil paths R 1 and R 2 from the operation valve 24 to the connection hydraulic cylinder 15. A hydraulic circuit for a work vehicle, in which a valve 26 is provided, and the operating valve 24 is provided with a hydraulic pressure release switching position for discharging the pressure oil in the coupling hydraulic cylinder 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10196886U JPH0423956Y2 (en) | 1986-07-02 | 1986-07-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10196886U JPH0423956Y2 (en) | 1986-07-02 | 1986-07-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS639348U JPS639348U (en) | 1988-01-21 |
| JPH0423956Y2 true JPH0423956Y2 (en) | 1992-06-04 |
Family
ID=30973185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10196886U Expired JPH0423956Y2 (en) | 1986-07-02 | 1986-07-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423956Y2 (en) |
-
1986
- 1986-07-02 JP JP10196886U patent/JPH0423956Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS639348U (en) | 1988-01-21 |
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