JPS63104450U - - Google Patents
Info
- Publication number
- JPS63104450U JPS63104450U JP19972686U JP19972686U JPS63104450U JP S63104450 U JPS63104450 U JP S63104450U JP 19972686 U JP19972686 U JP 19972686U JP 19972686 U JP19972686 U JP 19972686U JP S63104450 U JPS63104450 U JP S63104450U
- Authority
- JP
- Japan
- Prior art keywords
- switching valve
- oil passage
- electromagnetic switching
- circuit
- accumulator
- 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
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Damping Devices (AREA)
Description
第１図はこの考案を適用する車輪式建設機械の
一例である車輪式トラクタシヨベルの側面図、第
２図は第１図の車輪式トラクタシヨベルの要部の
電気・油圧回路図、第３図ａ，ｂ，ｃはこの考案
にかかるリミツトスイツチ取付要領を示す実施例
の斜視図、第４図は悪路走行中の車輪式トラクタ
シヨベルの側面図である。
３……作業装置、８……リフトシリンダ、１３
……リフトシリンダ用油圧切換弁、１７……電磁
切換弁、１８……スローリターン弁、１９……ア
キユムレータ、２０……振動抑制回路、２６……
ステアリングハンドル、２７……変速機レバ、２
８……リミツトスイツチ。
Figure 1 is a side view of a wheeled tractor shovel, which is an example of a wheeled construction machine to which this invention is applied; Figure 2 is an electric/hydraulic circuit diagram of the main parts of the wheeled tractor shovel shown in Figure 1; Figures 3a, b, and c are perspective views of an embodiment showing how to install a limit switch according to this invention, and Figure 4 is a side view of a wheeled tractor shovel running on a rough road. 3... Working device, 8... Lift cylinder, 13
... Hydraulic switching valve for lift cylinder, 17 ... Solenoid switching valve, 18 ... Slow return valve, 19 ... Accumulator, 20 ... Vibration suppression circuit, 26 ...
Steering handle, 27...Transmission lever, 2
8...Limit switch.
Claims (1)
油圧シリンダにより作業装置の自重を支持し、あ
るいは所定の回動動作をなさしめる車輪式建設機
械において、作業装置の自動負荷により圧力が発
する側の油圧シリンダ回路に連通する管路の分岐
管路に、常時はばねの付勢力により内部油路を閉
路し、外部からの電気信号により開路する電磁切
換弁を介してアキユムレータを接続し、上記電磁
切換弁とアキユムレータとを接続する油路の中間
にはスローリターン弁を配設し、さらに、走行用
変速機レバを高速位置に切換えたときにのみ、変
速機レバ上の可動部が作動子に作用して内部の電
気回路が閉路されるリミツトスイツチを設け、前
記電磁切換弁の受信部に上記リミツトスイツチを
介して電源を導いたことを特徴とする車輪式建設
機械の自動振動抑制装置。 One end of the working device is attached to the vehicle body in an articulated manner,
In wheel-type construction machinery that uses hydraulic cylinders to support the weight of working equipment or to perform predetermined rotational movements, it is used in branch pipes of pipes that communicate with the hydraulic cylinder circuit on the side where pressure is generated due to automatic loading of working equipment. , the accumulator is connected through an electromagnetic switching valve that normally closes the internal oil passage by the biasing force of a spring and opens the circuit by an electric signal from the outside, and an oil passage connecting the electromagnetic switching valve and the accumulator is provided in the middle of the oil passage. A slow return valve is provided, and a limit switch is provided in which the movable part on the transmission lever acts on the actuator and closes the internal electric circuit only when the driving transmission lever is switched to the high speed position. . An automatic vibration suppression device for a wheeled construction machine, characterized in that a power source is introduced to a receiving section of the electromagnetic switching valve via the limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19972686U JPH0527554Y2 (en) | 1986-12-25 | 1986-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19972686U JPH0527554Y2 (en) | 1986-12-25 | 1986-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63104450U true JPS63104450U (en) | 1988-07-06 |
| JPH0527554Y2 JPH0527554Y2 (en) | 1993-07-14 |
Family
ID=31161619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19972686U Expired - Lifetime JPH0527554Y2 (en) | 1986-12-25 | 1986-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0527554Y2 (en) |
-
1986
- 1986-12-25 JP JP19972686U patent/JPH0527554Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0527554Y2 (en) | 1993-07-14 |
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