JPH03118878U - - Google Patents
Info
- Publication number
- JPH03118878U JPH03118878U JP2709990U JP2709990U JPH03118878U JP H03118878 U JPH03118878 U JP H03118878U JP 2709990 U JP2709990 U JP 2709990U JP 2709990 U JP2709990 U JP 2709990U JP H03118878 U JPH03118878 U JP H03118878U
- Authority
- JP
- Japan
- Prior art keywords
- support device
- vibration damping
- working machine
- oil
- hydraulic pump
- 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
- 238000013016 damping Methods 0.000 claims 7
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図および第２図は本考案の第１の実施例を
示し、第１図は油圧シヨベルの要部を示す説明図
、第２図は油圧回路図、第３図は第２の実施例を
示す油圧回路図、第４図は第３の実施例を示す油
圧シヨベルの要部説明図、第５図は従来技術を示
す油圧シヨベルの全体図である。
１……下部走行体、３……上部旋回体（作業機
本体）、４……本体フレーム、５……機械室、６
……運転室、８……作業装置、２１……シリンダ
装置（支持装置）、２２，５６……チユーブ、２
３Ａ，２３Ｂ，５７Ａ，５７Ｂ……油室、２４，
５８……ピストン、２５，５１……カウンタウエ
イト、２６，６０……ロツド、２７……油圧ポン
プ、２８……供給側管路、３０……排出側管路、
３１……タンク、３２……リリーフ弁（排出手段
）、３３……絞り弁、３４，４２……切換弁（補
充手段）、３５……アキユムレータ、４１……レ
ベルスイツチ（油量検出器）、５２……支持ブラ
ケツト、５３，５９……ピン、５４……油圧シリ
ンダ。
Figures 1 and 2 show a first embodiment of the present invention, Figure 1 is an explanatory diagram showing the main parts of a hydraulic excavator, Figure 2 is a hydraulic circuit diagram, and Figure 3 is a second embodiment. FIG. 4 is an explanatory view of the main parts of a hydraulic shovel showing a third embodiment, and FIG. 5 is an overall view of a hydraulic shovel showing the prior art. 1... Lower traveling body, 3... Upper revolving body (work equipment main body), 4... Main body frame, 5... Machine room, 6
...Driver's cab, 8...Work device, 21...Cylinder device (support device), 22,56...Tube, 2
3A, 23B, 57A, 57B...Oil chamber, 24,
58... Piston, 25, 51... Counterweight, 26, 60... Rod, 27... Hydraulic pump, 28... Supply side pipe line, 30... Discharge side pipe line,
31... Tank, 32... Relief valve (discharge means), 33... Throttle valve, 34, 42... Switching valve (replenishment means), 35... Accumulator, 41... Level switch (oil amount detector), 52... Support bracket, 53, 59... Pin, 54... Hydraulic cylinder.
Claims (1)
けられた作業機本体と、該作業機本体の前部に俯
仰動可能に設けられ、前記油圧ポンプからの圧油
によつて作動される作業装置と、該作業装置に対
して作業機本体のバランスを取るために該作業機
本体の後部に設けられるカウンタウエイトとから
なる作業機において、前記作業機本体の後部に設
けられ、前記油圧ポンプからの圧油を収容するこ
とにより該圧油を介して前記カウンタウエイトを
可動に支持する支持装置と、該支持装置内に収容
された圧油の圧力が所定の上限値を越えたときに
、この圧油を該支持装置からタンクに排出させる
排出手段と、前記油圧ポンプからの圧油を前記支
持装置内に補充させる補充手段とから構成したこ
とを特徴とする作業機の振動減衰装置。 (2) 前記排出手段はリリーフ弁によつて構成し
てなる実用新案登録請求の範囲(1)項記載の作業
機の振動減衰装置。 (3) 前記支持装置とタンクとを接続する排出側
管路の途中には絞り弁を設けてなる実用新案登録
請求の範囲(1)項または(2)項記載の作業機の振動
減衰装置。 (4) 前記油圧ポンプと支持装置とを接続する供
給側管路の途中には、前記補充手段と支持装置と
の間に位置してアキユムレータを設けてなる実用
新案登録請求の範囲(1)項、(2)項または(3)項記
載の作業機の振動減衰装置。 (5) 前記補充手段は支持装置内に収容された圧
油の圧力が所定の下限値以下になると開弁し、こ
の下限値を越えると閉弁する切換弁によつて構成
してなる実用新案登録請求の範囲(1)項、(2)項、
(3)項または(4)項記載の作業機の振動減衰装置。 (6) 前記支持装置には内部に収容された圧油量
を検出する油量検出器を設け、前記補充手段は該
油量検出器で検出した圧油量が所定量以下になる
と開弁し、この所定量を越えると閉弁する切換弁
によつて構成してなる実用新案登録請求の範囲(1
)項、(2)項、(3)項または(4)項記載の作業機の振
動減衰装置。 (7) 前記支持装置は、カウンタウエイトを回動
可能に支持する支持ブラケツトと、該支持ブラケ
ツトと共にカウンタウエイトを支持する油圧シリ
ンダとによつて構成し、該油圧シリンダの油室内
に前記油圧ポンプからの圧油を収容させてなる実
用新案登録請求の範囲(1)項、(2)項、(3)項、(4)
項、(5)項または(6)項記載の作業機の振動減衰装
置。[Claims for Utility Model Registration] (1) A work machine body provided with a hydraulic pump driven by a prime mover, and a work machine body provided on the front part of the work machine body so as to be movable up and down, and which receives pressure from the hydraulic pump. In a working machine comprising a working device operated by oil and a counterweight provided at the rear of the working machine main body to balance the working machine main body with respect to the working device, the rear part of the working machine main body a support device configured to accommodate pressure oil from the hydraulic pump and movably support the counterweight via the pressure oil; The work is characterized by comprising: a discharge means for discharging this pressure oil from the support device into a tank when the pressure exceeds a value, and a replenishment means for replenishing the pressure oil from the hydraulic pump into the support device. Machine vibration damping device. (2) The vibration damping device for a working machine according to claim (1), wherein the discharge means is constituted by a relief valve. (3) The vibration damping device for a working machine according to claim (1) or (2), wherein a throttle valve is provided in the middle of the discharge side pipe connecting the support device and the tank. (4) Utility model registration claim (1), wherein an accumulator is provided between the replenishing means and the support device in the middle of the supply side pipe connecting the hydraulic pump and the support device. , a vibration damping device for a working machine as described in paragraph (2) or (3). (5) A utility model in which the replenishment means is constituted by a switching valve that opens when the pressure of the pressure oil stored in the support device falls below a predetermined lower limit value and closes when the lower limit value is exceeded. Scope of registration claims (1), (2),
Vibration damping device for work equipment as described in paragraph (3) or (4). (6) The support device is provided with an oil amount detector that detects the amount of pressurized oil stored therein, and the replenishing means opens when the amount of pressurized oil detected by the oil amount detector becomes less than a predetermined amount. , the scope of the utility model registration claim (1) consisting of a switching valve that closes when the predetermined amount is exceeded.
), (2), (3), or (4) of the vibration damping device for a working machine. (7) The support device includes a support bracket that rotatably supports the counterweight, and a hydraulic cylinder that supports the counterweight together with the support bracket, and the hydraulic pump is connected to the oil chamber of the hydraulic cylinder. Scope of utility model registration claims (1), (2), (3), (4)
Vibration damping device for work equipment as described in paragraph (5) or (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2709990U JPH0751426Y2 (en) | 1990-03-16 | 1990-03-16 | Vibration damping device for work equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2709990U JPH0751426Y2 (en) | 1990-03-16 | 1990-03-16 | Vibration damping device for work equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03118878U true JPH03118878U (en) | 1991-12-09 |
| JPH0751426Y2 JPH0751426Y2 (en) | 1995-11-22 |
Family
ID=31529971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2709990U Expired - Lifetime JPH0751426Y2 (en) | 1990-03-16 | 1990-03-16 | Vibration damping device for work equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751426Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015098383A (en) * | 2013-11-19 | 2015-05-28 | 株式会社神戸製鋼所 | Work vehicle |
| JP2018065665A (en) * | 2016-10-20 | 2018-04-26 | コベルコ建機株式会社 | Vibration control device for construction machine |
-
1990
- 1990-03-16 JP JP2709990U patent/JPH0751426Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015098383A (en) * | 2013-11-19 | 2015-05-28 | 株式会社神戸製鋼所 | Work vehicle |
| JP2018065665A (en) * | 2016-10-20 | 2018-04-26 | コベルコ建機株式会社 | Vibration control device for construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0751426Y2 (en) | 1995-11-22 |
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