JPH038932A - Outriger circuit - Google Patents
Outriger circuitInfo
- Publication number
- JPH038932A JPH038932A JP14163089A JP14163089A JPH038932A JP H038932 A JPH038932 A JP H038932A JP 14163089 A JP14163089 A JP 14163089A JP 14163089 A JP14163089 A JP 14163089A JP H038932 A JPH038932 A JP H038932A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- outrigger
- switches
- hydraulic
- side oil
- 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
Links
- 230000005284 excitation Effects 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 66
- 239000010720 hydraulic oil Substances 0.000 abstract description 6
- 230000000630 rising effect Effects 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000007935 neutral effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/085—Ground-engaging fitting for supporting the machines while working, e.g. outriggers, legs
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、建設機械１作業車両などに装備されるアウ
トリガの制御用回路に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a circuit for controlling outriggers installed in construction machinery, work vehicles, and the like.
従来の技術 第４図は、ホイール式ショベルの側面図である。Conventional technology FIG. 4 is a side view of the wheeled excavator.
図において、１はホイール式ショベルの車体、２は車体
１の下部走行体、３Ｌ、３Ｒは下部走行体２に装備され
ている左右のアウトリガ、４は上部旋回体、５は上部旋
回体４のフロント部に装着されている作業アタッチメン
トである。第５図は、従来技術のアウトリガ回路図であ
る。図において６Ｌ、６Ｒはそれぞれアウトリカ３Ｌ、
３Ｒ作動用油圧シリンダ、７ｔ 、７Ｒはそれぞれ油圧
シリンダ６Ｌ、６Ｒ制御用方向切換弁、８は圧油供給用
油圧源である。In the figure, 1 is the body of a wheeled excavator, 2 is the undercarriage of the car body 1, 3L and 3R are left and right outriggers installed on the undercarriage 2, 4 is the upper revolving body, and 5 is the upper revolving body 4. This is a work attachment attached to the front part. FIG. 5 is a conventional outrigger circuit diagram. In the figure, 6L and 6R are respectively Aurica 3L,
3R is a hydraulic cylinder for operation; 7t and 7R are directional switching valves for controlling hydraulic cylinders 6L and 6R, respectively; and 8 is a hydraulic source for supplying pressure oil.
次に、従来技術アウトリガ回路の構成および機能を第４
図および第５図について述べる。ホイールローダの下部
走行体２には、その左右両側にアウトリガ３Ｌ、３Ｒが
取付けられ、そのアウトリガ３Ｌ、３Ｒをそれぞれ油圧
シリンダ６Ｌ、６Ｒによって張出すように構成されてい
る。そこで方向切換弁７Ｌ、７Ｒをそれぞれ切換操作す
ると、油圧源８からの圧油が上記油圧シリンダ６Ｌ、６
Ｒに対して供給されるので、油圧シリンダ６Ｌ。Next, the configuration and function of the conventional outrigger circuit will be explained in the fourth section.
5 and 5 will be described. Outriggers 3L and 3R are attached to the lower traveling body 2 of the wheel loader on both the left and right sides thereof, and the outriggers 3L and 3R are configured to be extended by hydraulic cylinders 6L and 6R, respectively. Therefore, when the directional control valves 7L and 7R are switched, the pressure oil from the hydraulic source 8 is transferred to the hydraulic cylinders 6L and 6.
Since it is supplied to R, the hydraulic cylinder 6L.
６Ｒは伸縮作動し、アウトリガ３Ｌ、３Ｒの下げ。6R is telescopically operated, and outriggers 3L and 3R are lowered.
上げ用張出し回動を行うことができる。It is possible to rotate the overhang for raising.
この発明の解決すべき課題
ホイール式ショベルに装備されている左右アウトリカは
、作業現場の状況に応じてそれぞれ上げ。Problems to be Solved by this Invention The left and right outriggers installed on a wheeled excavator can be raised individually depending on the situation at the work site.
下げの回動操作を行わなければならない。その操作状態
の種類は、下記衣１のように示される。なお表１におい
て、Ｒは右アウトリガを、またＬは左アウトリガを示す
。The lowering rotation operation must be performed. The types of operation states are shown in Figure 1 below. In Table 1, R indicates the right outrigger, and L indicates the left outrigger.
表
上記衣１における操作番号ＯＰＩ〜○Ｐ８のうち、ＯＰ
ｌはＲ（右アウトリカ）とＬ（左アウトリガ）とを同時
に上げ操作する操作状態である。Among the operation numbers OPI to ○P8 in Clothing 1 above, OP
1 is an operation state in which R (right outrigger) and L (left outrigger) are simultaneously raised.
まなＯＲ３は、Ｒを上げがっＬを下は
操作する状態である。上記のような各種操作状態を行う
ときには、運転者は左右方向切換弁をそれぞれ切換操作
しなければならながすた。運転者にとって上記切換操作
はわずられしく、また誤操作の原因にもなっていた。Mana OR3 is in a state where R is raised and L is lowered. When performing the various operating states described above, the driver must operate the left and right direction switching valves respectively. The above-mentioned switching operation is troublesome for the driver, and may also lead to erroneous operation.
一方、左右アウトリガ用油圧シリンダに対する圧油供給
源として、ホイール式ショベルに搭載している可変ポン
プ（図示はない）を用いていた。On the other hand, a variable pump (not shown) mounted on a wheeled excavator was used as a pressure oil supply source for the left and right outrigger hydraulic cylinders.
上記可変ポンプは、走行モータや作業アタッチメント用
各種油圧アクチュエータなどに圧油を供給する油圧源で
あるので、吐出容量の大なる可変ポンプであった。その
ためにアウトリガ操作時には、その油圧シリンダの作動
速度を遅くするために、上記可変ポンプの吐出量を減少
させる必要があった。The variable pump is a hydraulic power source that supplies pressurized oil to a travel motor, various hydraulic actuators for work attachments, and the like, so it is a variable pump with a large discharge capacity. Therefore, when operating the outriggers, it is necessary to reduce the discharge amount of the variable pump in order to slow down the operating speed of the hydraulic cylinder.
この発明は上記の課題を解決し、左右アウトリガの各種
操作状態を行う場合にはスイッチ操作にて容易に制御で
きるようにし、また、上記スイッチ操作を行ったときに
は可変ポンプの吐出量を減少させるようなアウトリガ回
路を提供することを目的とする。This invention solves the above-mentioned problems, and when performing various operation states of the left and right outriggers, it can be easily controlled by switch operation, and when the above-mentioned switch operation is performed, the discharge amount of the variable pump is reduced. The purpose of the present invention is to provide an outrigger circuit that is easy to use.
課題を解決するための手段
上記の課題を解決するために講じたこの発明の手段は、
（１）仁左右油圧シリンタのそれぞれロッド側油室をパ
イロット操作チェック弁を介して合流可能に接続し、
ロ２上記ロッド側油室、左右油圧シリンダの各ヘッド側
油室と、圧油供給用油圧源とを連結する各油路にそれぞ
れ電磁弁を配設し、
ハ、一方、電気回路内に左アウトリガの上げ、下げ、右
アウトリガの上げ、下げ操作用のそれぞれスイッチを設
け、そのスイッチの選択操作による電磁弁用ソレノイド
の励磁パターンを設定し、左右油圧シリンダの作動制御
を行うように構成した。Means for Solving the Problems The means of the present invention taken to solve the above problems are as follows: (1) The rod-side oil chambers of the left and right hydraulic cylinders are connected so as to be merging via a pilot-operated check valve; (2) A solenoid valve is provided in each oil passage connecting the above rod side oil chamber, each head side oil chamber of the left and right hydraulic cylinders, and the hydraulic source for supplying pressure oil; Switches were provided for raising and lowering the outrigger, and for raising and lowering the right outrigger, and by selectively operating the switches, the excitation pattern for the solenoid for the electromagnetic valve was set, and the operation of the left and right hydraulic cylinders was controlled.
（２）イ、前記圧油供給用油圧源として吐出容量の大な
る可変ポンプを装備したとき、電気回路内スイッチの操
作信号を上記可変ポンプのレギュレータに出力するよう
にしてポンプ吐出量カット手段を具備せしめた。(2) A. When a variable pump with a large discharge capacity is installed as the hydraulic pressure source for supplying pressure oil, the pump discharge amount cutting means is configured to output an operation signal of a switch in the electric circuit to the regulator of the variable pump. I have prepared it.
作 用
（１）仁電気回路内に左アウトリガの上げ、下げ右アウ
トリガの上け、下げ用のそれぞれスイッチを設け、その
スイッチの選択操作による電磁弁用ソレノイドの励磁パ
ターンを設定した。そこで上記スイッチのうち所要のス
イッチを選択操作すると、その操作に対応するソレノイ
ドの励磁パターンが発揮されるので、容易に左右アウト
リガの制御を行うことができる。Function (1) A switch for raising and lowering the left outrigger was provided in the electric circuit to raise and lower the right outrigger, and the excitation pattern of the solenoid for the solenoid valve was set by selectively operating the switches. Therefore, when a desired switch is selectively operated from among the above-mentioned switches, the excitation pattern of the solenoid corresponding to the operation is activated, so that the left and right outriggers can be easily controlled.
（２）イ、前記圧油供給用油圧源として吐出容量の大な
る可変ポンプを装備したホイール式ショベルでは、電気
回路内スイッチのうち所要のスイッチを選択操作すると
、そのスイッチの操作信号はミニソレノイドを介してポ
ンプ吐出量カット弁に出力される。ポンプ吐出量カット
弁から導出されるパイロット圧は、可変ポンプのレギュ
レータに作用する。そこで大容量可変ポンプからの吐出
量は減少されて、アウトリガ用油圧シリンダに供給され
る。それによりアウトリガは、最適の低速で回動作動を
行うことができる。(2) A. In a wheeled excavator equipped with a variable pump with a large discharge capacity as the hydraulic source for supplying pressure oil, when a desired switch in the electric circuit is selected and operated, the operation signal for that switch is sent to a mini solenoid. is output to the pump discharge amount cut valve via the pump discharge amount cut valve. The pilot pressure derived from the pump discharge amount cut valve acts on the regulator of the variable pump. Therefore, the discharge amount from the large capacity variable pump is reduced and supplied to the outrigger hydraulic cylinder. This allows the outriggers to perform rotational movements at optimum low speeds.
実 施 例
以下、この発明の実施例を図面に基づいて詳細に説明す
る。Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
（１）第１図はこの発明にががる請求項第１項アウトリ
カ回路の油圧回路図、第２図は電気回路図である。第１
図において、９ｒＬ、９ｔはそれぞれＲ２Ｈ（図示はな
いが右左のアウトリガ）駆動用油圧シリンダ、ＩＯＲ，
ＩＯＬは油圧シリンダ９１９Ｌのロッド側油室、］、Ｉ
Ｒ，ＩＬＬはそれぞれヘッド側油室、１２．〜，１５は
それぞれパイロット操作チェック弁、１６．１７はリリ
ーフ弁、１８．１９．２０はそれぞれ電磁弁、２１は油
圧源、ａは電磁弁１８のソレノイド、ｂ、ｃは電磁弁２
０のそれぞれソレノイド、ｄ、ｅは電磁弁１９のそれぞ
れソレノイドである。第２図において、（Ｒ上）、（Ｒ
下）は右アウトリガのそれぞれ上け、下げ操作用スイッ
チ、（Ｌ上）、（Ｌ下）は左アウトリガのそれぞれ上げ
、下は操作用スイッチ、２２は電源、２３．２４はそれ
ぞれ夕′イオードである。(1) FIG. 1 is a hydraulic circuit diagram of an autoric circuit according to claim 1, and FIG. 2 is an electric circuit diagram. 1st
In the figure, 9rL and 9t are hydraulic cylinders for driving R2H (right and left outriggers, not shown), IOR,
IOL is the rod side oil chamber of the hydraulic cylinder 919L, ], I
R and ILL are head side oil chambers, 12. ~, 15 are pilot operated check valves, 16, 17 are relief valves, 18, 19, and 20 are electromagnetic valves, 21 is a hydraulic pressure source, a is a solenoid of electromagnetic valve 18, b and c are electromagnetic valves 2
0 are the respective solenoids, and d and e are the respective solenoids of the electromagnetic valve 19. In Figure 2, (R top), (R
(Bottom) are the switches for raising and lowering the right outrigger, (L upper) and (L lower) are the raising and lower operation switches for the left outrigger, 22 is the power supply, and 23 and 24 are the evening diodes, respectively. be.
次に、この発明にかかる請求項第１項アウトリガ回路の
構成を第１図および第２図について述べる。右左油圧シ
リンダ９Ｒ，９Ｌそれぞれロッド側油室１０Ｒ，ＩＯＬ
をパイロット操作チェック弁１２．１４を介して接続し
、上記ロッド側油室（Ｉｏｎ ・１０Ｌ）、右左油圧シ
リンダ９Ｒ２９Ｌの各ヘッド側油室１１Ｒ，ＩＬＬと、
圧油供給用油圧源２１とを連結する各油路にそれぞれ電
磁弁１８，１９．２０を配設しな。一方、電気回路内に
右アウトリガの上げ、下げ、左アウトリガの上げ、下げ
操作用のそれぞれスイッチ（Ｒ上）。Next, the configuration of the outrigger circuit according to claim 1 of the present invention will be described with reference to FIGS. 1 and 2. Right and left hydraulic cylinders 9R, 9L respectively rod side oil chamber 10R, IOL
are connected via pilot operated check valves 12.14 to the rod side oil chamber (Ion 10L) and each head side oil chamber 11R, ILL of the right and left hydraulic cylinders 9R and 29L,
Solenoid valves 18, 19, and 20 are disposed in each oil passage that connects to the hydraulic source 21 for supplying pressure oil. On the other hand, there are switches (on R) in the electric circuit for raising and lowering the right outrigger and for raising and lowering the left outrigger.
（Ｒ下）、（Ｌ上）、（Ｌ下）を設けた。そして上記ス
イッチの選択操作による電磁弁１８，１９゜２０のそれ
ぞれソレノイドａ、〜、ｅの励磁パターンを設定し、右
左油圧シリンダ９Ｒ，９Ｌの作動制御を行うように構成
した。(R lower), (L upper), and (L lower) were provided. The excitation patterns of the solenoids a, .
次に、この発明にががる請求項第１項アウトリガ回路の
作用機能について述べる。電気回路内スイッチ（Ｒ上）
、（Ｒ下）、（Ｌ上）、（Ｌ下）のうち、所要のスイッ
チを選択してオン操作すると、所望のアウトリガ用操作
状態を行うことができる。各種操作状態を行う場合に選
択操作するスイッチと、そのスイッチのオン操作により
発揮される電磁弁のソレノイド励磁パターンは、下記衣
２の通りである。Next, the functions of the outrigger circuit according to claim 1 of the present invention will be described. Switch in electrical circuit (R top)
, (R lower), (L upper), and (L lower), by selecting a desired switch and turning it on, a desired outrigger operating state can be achieved. The switches to be selectively operated when performing various operation states and the solenoid excitation pattern of the solenoid valve produced by turning on the switches are as shown in Figure 2 below.
それで、ＯＰｌの操作状態を行う場合には、スイッチ（
Ｒ上）と（Ｌ上）をともにオン操作する。Therefore, when performing the operation state of OPl, switch (
Turn on both (R top) and (L top).
ソレノイドａ、ｂ、ｄは通電するので、電磁弁１０
８はタンク連通油路位置イより圧油供給油路位置口に、
また電磁弁１９は中立位置よりタンク連通油路位置ハに
、また電磁弁２０は中立位置よりタンク連通油路位置二
に切換わる。そこで、油圧源２１からの圧油は電磁弁１
８の圧油供給油路位置口を介して右左油圧シリンダ９Ｒ
，９Ｌのそれぞれロッド側油室１０Ｒ，ＩＯＬに供給さ
れる。それと同時に、右左油圧シリンダ９Ｒ，９Ｌのそ
れぞれヘッド側油室１１Ｒ，ＩＩＬ内の作動油は電磁弁
１９．２０のそれぞれタンク連通油路位置ハ。Since the solenoids a, b, and d are energized, the solenoid valve 108 is moved from the tank communication oil passage position A to the pressure oil supply oil passage position opening.
Further, the solenoid valve 19 is switched from the neutral position to the tank communication oil passage position C, and the electromagnetic valve 20 is switched from the neutral position to the tank communication oil passage position 2. Therefore, the pressure oil from the hydraulic source 21 is supplied to the solenoid valve 1.
Right and left hydraulic cylinders 9R through the pressure oil supply oil path position opening of 8.
, 9L are supplied to the rod side oil chambers 10R and IOL, respectively. At the same time, the hydraulic oil in the head side oil chambers 11R, IIL of the right and left hydraulic cylinders 9R, 9L, respectively, reaches the tank communication oil path position of the solenoid valve 19, 20, respectively.
二を介して油タンク３０に戻される。それによりアウト
リガＲ，Ｌをともに、同時上げ下げ作動させることがで
きる。 また、ＯＰ８の操作状態を行
う場合には、スイッチ（Ｒ上）とくＬ下）をともにオン
操作する。ソレノイドａ、ｄ、ｃは通電するので、電磁
弁１８はタンク連通油路位置イより圧油供給油路位置口
に、また電磁弁１９は中立位置よりタンク連通油路位置
ハに、また電磁弁２０は中立位置より圧油供給油路位置
ポに切換わる。そこで、油圧源２１からの圧油は電磁弁
１８．２０のそれぞれ圧油供給油路位置口、ホを介して
、油圧シリンダ９Ｒのロッド側油室１０Ｒと、油圧シリ
ンダ９Ｌのヘッド側油室１１Ｌに供給される。それと同
時に、右油圧シリンダ９Ｒのヘッド側油室１１Ｒ内の作
動油は電磁弁１つのタンク連通油路位置ハを介して油タ
ンク３０に戻される。威た油圧シリンダ９１６のヘッド
側油室ＩＬＬ側のピストン部受圧面積はロッド側油室１
０Ｌ側のそれより大であるので、その差圧により油圧シ
リンダリしは伸長作動を行う。上記ロッド側油室１０Ｌ
内の作動油は、油圧シリンダ９Ｒのロッド側油室１０Ｒ
の方へ合流される。それにより、アウトリガＲを上げ、
同時にアウトリガＬを作動させることができる。The oil is returned to the oil tank 30 via 2. This allows both outriggers R and L to be raised and lowered simultaneously. Further, when performing the operation state of OP8, both the switches (R upper) and L lower) are turned on. Solenoids a, d, and c are energized, so the solenoid valve 18 is moved from the tank communication oil path position A to the pressure oil supply oil path position opening, and the solenoid valve 19 is moved from the neutral position to the tank communication oil path position C. 20 is switched from the neutral position to the pressure oil supply oil path position PO. Therefore, the pressure oil from the oil pressure source 21 is supplied to the rod side oil chamber 10R of the hydraulic cylinder 9R and the head side oil chamber 11L of the hydraulic cylinder 9L through the pressure oil supply oil path position opening and E of the solenoid valve 18, 20, respectively. is supplied to At the same time, the hydraulic oil in the head side oil chamber 11R of the right hydraulic cylinder 9R is returned to the oil tank 30 via the tank communication oil passage position C of one solenoid valve. The pressure receiving area of the piston on the head side oil chamber ILL side of the hydraulic cylinder 916 is the rod side oil chamber 1.
Since it is larger than that on the 0L side, the hydraulic cylinder performs an extension operation due to the differential pressure. Above rod side oil chamber 10L
The hydraulic oil inside is in the rod side oil chamber 10R of the hydraulic cylinder 9R.
will join you towards. As a result, the outrigger R is raised,
Outrigger L can be activated at the same time.
上記のようにスイッチ操作をして、電磁弁のソレノイド
励磁パターンを実施し、右左アラ１〜リガＲ，Ｌの制御
を容易に行うことができる。By operating the switches as described above, the solenoid excitation pattern of the electromagnetic valve can be implemented, and the right and left aligners 1 to rigs R and L can be easily controlled.
（２）第３図は、この発明にかかる請求項第２項のアウ
トリカ回路図である。図において、２３．〜２８はそれ
ぞれダイオード、２９はポンプ吐出量カット弁３１を作
動させるミニソレノイド、３２は圧油供給用油圧源であ
る可変ポンプ、３３は可変ポンプ３２のレギュレータで
ある。(2) FIG. 3 is an outlier circuit diagram according to claim 2 of the present invention. In the figure, 23. 28 are diodes, 29 is a mini solenoid that operates the pump discharge amount cut valve 31, 32 is a variable pump which is a hydraulic pressure source for supplying pressure oil, and 33 is a regulator of the variable pump 32.
次に、この発明にかかる請求項第２項アウトリガ回路の
構成を第３図について述べる。この請求項第２項アウト
リガ回路が請求項第１項と異なる点は、前記圧油供給用
油圧源として吐出容量の大なる可変ポンプ３２を装備し
たとき、電気回路内スイッチ（Ｒ上）、（Ｒ下）、（Ｌ
上）、（Ｌ下）の操作信号を上記可変ポンプ３２のレギ
ュレータ３３に出力するようにし、ポンプ吐出量カット
手段を具備せしめた点である。Next, the configuration of the outrigger circuit according to claim 2 of the present invention will be described with reference to FIG. This outrigger circuit in the second aspect of the present invention differs from the first aspect in that when a variable pump 32 with a large discharge capacity is installed as the hydraulic pressure source for supplying pressure oil, a switch in the electric circuit (on R), ( R lower), (L
The operation signals (upper) and (L lower) are output to the regulator 33 of the variable pump 32, and pump discharge amount cutting means is provided.
次に、請求項第２項アウトリガ回路の作用機能について
述べる。吐出容量の大なる可変ポンプ３２を装備したホ
イール式ショベルでは、電気回路内スイッチ（Ｒ上）、
（Ｒ下）、（Ｌ上）、（Ｌ下）のうち所要のスイッチを
選択操作すると、そのスイッチの操作信号はミニソレノ
イド２９を介してポンプ吐出量カット弁３１に出力され
る。ポンプ吐出量カット弁３１から導出されるパイロッ
ト圧は、可変ポンプ３２のレギュレータ３３に作用する
。そこで大容量可変ポンプ３２からの吐出量は減少され
て、アウトリガ用油圧シリンダ（９Ｒ，９Ｌ）に供給さ
れる。それによりアウトリガは、最適の低速で回動作動
を行うことができる。Next, the functions of the outrigger circuit according to claim 2 will be described. In a wheeled excavator equipped with a variable pump 32 with a large discharge capacity, a switch in the electric circuit (above R),
When a desired switch is selected and operated among (R lower), (L upper), and (L lower), the operation signal of the switch is outputted to the pump discharge amount cut valve 31 via the mini solenoid 29. The pilot pressure derived from the pump discharge amount cut valve 31 acts on the regulator 33 of the variable pump 32. Therefore, the discharge amount from the large capacity variable pump 32 is reduced and supplied to the outrigger hydraulic cylinders (9R, 9L). This allows the outriggers to perform rotational movements at optimum low speeds.
なお別のポンプ吐出量カット手段として、電気回路内ス
イッチの操作信号をコントローラ（図示はない）を介し
て、可変ポンプ３２のレギュレータ３３に作用させるよ
うにしてもよい。As another pump discharge amount cutting means, an operation signal of a switch in the electric circuit may be applied to the regulator 33 of the variable pump 32 via a controller (not shown).
発明の効果
従来技術アウトリガ回路をそなえたホイール式ショベル
において、左右アウトリガの各種操作状態を行うときに
は、運転者は左右方向切換弁をそれぞれ切換操作しなけ
ればならなかった。運転者にとって上記切換操作はわず
られしく、また誤操作の原因にもなっていた。一方、ホ
イール式ショベルには、油圧源として吐出容量の大なる
可変ポンプを搭載していた。そのためにアウトリガ操作
時には、その油圧シリンダの作動速度を遅くするために
、上記可変ポンプの吐出量を減少させる必 ３
４−
要があった。Effects of the Invention In a wheeled excavator equipped with a prior art outrigger circuit, when performing various operating states of the left and right outriggers, the driver had to operate the left and right direction switching valves respectively. The above-mentioned switching operation is troublesome for the driver, and may also lead to erroneous operation. On the other hand, wheeled excavators were equipped with a variable pump with a large discharge capacity as a hydraulic power source. Therefore, when operating the outriggers, it was necessary to reduce the discharge amount of the variable pump in order to slow down the operating speed of the hydraulic cylinder.
しかしこの発明にかかるアウトリガ回路では、左右アウ
トリガのそれぞれ上け、下げ操作用スイッチを設け、そ
のスイッチの選択操作による電磁弁用ソレノイドの励磁
パターンを設定し、左右油圧シリンダの作動制御を行う
ようにした。また、圧油供給油圧源として装備されてい
る大容量可変ポンプに対して、上記スイッチの選択操作
時に、ポンプ吐出量を減少させるようにした。それによ
り運転者は、アウトリガの各種操作状態を行うときスイ
ッチの選択操作により電磁弁のソレノイド励磁パターン
を実施し、左右アウトリガの制御を容易に行うことがで
きる。また上記スイッチの操作時には、可変ポンプの吐
出量を減少して最適の低速で、アウトリガを回動させる
ことができる。However, in the outrigger circuit according to the present invention, a switch is provided for raising and lowering the left and right outriggers respectively, and the excitation pattern of the solenoid valve solenoid is set by selective operation of the switch, and the operation of the left and right hydraulic cylinders is controlled. did. Furthermore, the pump discharge amount of the large capacity variable pump equipped as a pressure oil supply hydraulic source is reduced when the switch is selected. Thereby, when performing various operating states of the outriggers, the driver can easily control the left and right outriggers by implementing the solenoid excitation pattern of the electromagnetic valve by selectively operating the switch. Furthermore, when the switch is operated, the discharge amount of the variable pump is reduced to rotate the outrigger at an optimum low speed.
したがって、この発明にかかるアウトリガ回路をそなえ
た建設機械８作業車両などでは、アウトリガの操作制御
性および作動性を向上させる。Therefore, in the construction machine 8 work vehicle equipped with the outrigger circuit according to the present invention, the controllability and operability of the outrigger are improved.
第１図はこの発明にかかる請求項第１項アウトリガ回路
の油圧回路図、第２図はこの発明の請求項第１項アウト
リガ回路の電気回路図、第３図はこの発明の請求項第２
項のアラ１へリガ回路図、第４図はホイール式ショベル
の側面図、第５図は従来技術のアウトリガ回路図である
。
３Ｌ、３Ｒアウトリガ
６ｔ 、６Ｒ，９Ｌ 、９−−−−−一−−油圧シリン
ダ１０ Ｌ 、 １０ Ｒ−−−−一−−−−−−−
−−−−−−−−ロッド側油室１１ Ｌ 、 １１
Ｒ−−−−−一−−−−−−−−−−−−−ヘッド側油
室１８ 、１９ 、２０−−−−−−一−−−−−−−
−−−−−−−−−−−−−一電磁弁ａ、ｂ ｃ、ｄ
、ｅ ソレノイ１〜（Ｒ上）、（Ｒ下）、（Ｌ
上）、（Ｌ下）スイッチ
３
レキュレータ
以 上Fig. 1 is a hydraulic circuit diagram of the outrigger circuit according to claim 1 of the present invention, Fig. 2 is an electric circuit diagram of the outrigger circuit according to claim 1 of the present invention, and Fig. 3 is a hydraulic circuit diagram of the outrigger circuit according to claim 1 of the present invention.
4 is a side view of a wheeled excavator, and FIG. 5 is a conventional outrigger circuit diagram. 3L, 3R outrigger 6t, 6R, 9L, 9------1--Hydraulic cylinder 10 L, 10 R-------
---------Rod side oil chamber 11L, 11
R---------1-----------Head side oil chamber 18, 19, 20---------1-----------
--------------Solenoid valve a, b c, d
, e Solenoid 1 ~ (R upper), (R lower), (L
Upper), (L lower) switch 3 Reculator or higher
Claims (2)
をそれぞれ油圧シリンダによって張出すように構成した
建設機械、作業車両などにおいて、上記左右油圧シリン
ダのそれぞれロッド側油室をパイロット操作チェック弁
を介して合流可能に接続し、上記ロッド側油室、左右油
圧シリンダの各ヘッド側油室と、圧油供給用油圧源とを
連結する各油路にそれぞれ電磁弁を配設し、一方、電気
回路内に左アウトリガの上げ、下げ、右アウトリガの上
げ、下げ操作用のそれぞれスイッチを設け、そのスイッ
チの選択操作による電磁弁用ソレノイドの励磁パターン
を設定し、左右油圧シリンダの作動制御を行うように構
成したことを特徴とするアウトリガ回路。(1) In construction machinery, work vehicles, etc., in which outriggers rotatably mounted on the left and right sides of the vehicle body are extended by hydraulic cylinders, pilot-operated check valves are installed in the rod-side oil chambers of the left and right hydraulic cylinders. A solenoid valve is installed in each oil passage that connects the rod-side oil chamber, each head-side oil chamber of the left and right hydraulic cylinders, and a hydraulic source for supplying pressure oil. Switches are provided in the circuit for raising and lowering the left outrigger and for raising and lowering the right outrigger, and by selectively operating the switches, the excitation pattern for the solenoid valve solenoid is set, and the operation of the left and right hydraulic cylinders is controlled. An outrigger circuit characterized in that it is configured as follows.
変ポンプを装備したとき、電気回路内スイッチの操作信
号を上記可変ポンプのレギュレータに出力するようにし
てポンプ吐出量カット手段を具備せしめた特許請求の範
囲第１項記載のアウトリガ回路。(2) When a variable pump with a large discharge capacity is installed as the hydraulic pressure source for supplying pressure oil, a means for cutting the pump discharge amount is provided so as to output an operation signal of a switch in the electric circuit to the regulator of the variable pump. An outrigger circuit according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1141630A JP2725054B2 (en) | 1989-06-02 | 1989-06-02 | Outrigger circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1141630A JP2725054B2 (en) | 1989-06-02 | 1989-06-02 | Outrigger circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH038932A true JPH038932A (en) | 1991-01-16 |
| JP2725054B2 JP2725054B2 (en) | 1998-03-09 |
Family
ID=15296508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1141630A Expired - Lifetime JP2725054B2 (en) | 1989-06-02 | 1989-06-02 | Outrigger circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2725054B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7197872B2 (en) * | 2002-12-27 | 2007-04-03 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit in work vehicle |
| US7445240B2 (en) | 2002-12-27 | 2008-11-04 | Hitachi Construction Machinery Co., Ltd. | Drive device of hydraulic cylinder for working |
| JP2010001097A (en) * | 2008-06-18 | 2010-01-07 | Tadano Ltd | Outrigger device |
| CN112390195A (en) * | 2020-11-12 | 2021-02-23 | 江苏天煤机电科技有限公司 | Mining fork dress formula unit support carrier |
-
1989
- 1989-06-02 JP JP1141630A patent/JP2725054B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7197872B2 (en) * | 2002-12-27 | 2007-04-03 | Hitachi Construction Machinery Co., Ltd. | Hydraulic circuit in work vehicle |
| US7445240B2 (en) | 2002-12-27 | 2008-11-04 | Hitachi Construction Machinery Co., Ltd. | Drive device of hydraulic cylinder for working |
| JP2010001097A (en) * | 2008-06-18 | 2010-01-07 | Tadano Ltd | Outrigger device |
| CN112390195A (en) * | 2020-11-12 | 2021-02-23 | 江苏天煤机电科技有限公司 | Mining fork dress formula unit support carrier |
| CN112390195B (en) * | 2020-11-12 | 2022-02-01 | 江苏天煤机电科技有限公司 | Mining fork dress formula unit support carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2725054B2 (en) | 1998-03-09 |
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