JPS63101501A - Working oil tank for construction machine and the like - Google Patents
Working oil tank for construction machine and the likeInfo
- Publication number
- JPS63101501A JPS63101501A JP61245527A JP24552786A JPS63101501A JP S63101501 A JPS63101501 A JP S63101501A JP 61245527 A JP61245527 A JP 61245527A JP 24552786 A JP24552786 A JP 24552786A JP S63101501 A JPS63101501 A JP S63101501A
- Authority
- JP
- Japan
- Prior art keywords
- air
- working oil
- level
- pipe
- tank
- 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
- 238000010276 construction Methods 0.000 title claims description 8
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000010720 hydraulic oil Substances 0.000 claims description 35
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 28
- 230000000694 effects Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Component Parts Of Construction Machinery (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は建設機械等に備えられる作動油タンクに係り、
特に建設機械が傾斜地で作業する場合に好適な作動油タ
ンクに関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a hydraulic oil tank provided in construction machinery, etc.
In particular, the present invention relates to a hydraulic oil tank suitable for use when construction machinery works on a slope.
建設機械、例えば油圧ショベルは、第４図に示すように
走行体１上の旅回体２に、フロント３制御用油圧系など
の作動油タンク４を備えている。As shown in FIG. 4, a construction machine, such as a hydraulic excavator, is equipped with a hydraulic oil tank 4 for a hydraulic system for controlling a front 3 on a traveling body 2 on a traveling body 1.
一般的に従来の作動油タンクは、第５図に示すように作
動油５を入れた密閉タンク６に隔壁７およびリブ８を設
けてタンク内部を区画しているが、基本的には隔壁７．
リブ８は補強用であり、全体としては１つの室を形成し
た構成となっている。In general, a conventional hydraulic oil tank has a closed tank 6 containing hydraulic oil 5 with partition walls 7 and ribs 8 to partition the inside of the tank, as shown in FIG. ．．
The ribs 8 are for reinforcement, and the structure forms one chamber as a whole.
前記の隔壁７およびリブ８の数はタンクの大きさにより
決定される。また隔壁７およびリブ８には。The number of said partitions 7 and ribs 8 is determined by the size of the tank. Also, for the partition wall 7 and the rib 8.
空気および作動油５の流通口となる開口９が設けられて
いる。尚１図中１０は戻り管、１１は吸入管、１２は戻
り管１０．吸入管１１にそれぞれ具えられるフィルタを
示す。An opening 9 serving as a flow port for air and hydraulic oil 5 is provided. In Figure 1, 10 is a return pipe, 11 is a suction pipe, and 12 is a return pipe 10. The filters each provided in the suction pipe 11 are shown.
上記の作動油タンクにおいて、第４図に示した油圧ショ
ベルが傾斜地で作業した場合に１作動油５の油面ＯＬ全
全体傾斜することになる。そして、傾斜地の傾斜角度が
大きい場合には、作動油５の油面ＯＬが仮想線で示すよ
うに大きく傾斜し、例えば油面がＯＬ’となったときに
は吸入管１１の吸通口の一部あるいは全部が油面ＯＬ’
から露出して空気を吸い込んでしまう。また油面がＯＬ
’となったときには戻り管１０の排出口の一部あるいは
全部が油面ＯＬ’から露出して、排出油により油面を攪
拌し作動油５を空気で泡たたせてしまう。In the hydraulic oil tank described above, when the hydraulic excavator shown in FIG. 4 operates on a slope, the entire oil surface OL of the hydraulic oil 5 will be inclined. When the inclination angle of the slope is large, the oil level OL of the hydraulic oil 5 inclines greatly as shown by the imaginary line. For example, when the oil level becomes OL', a part of the suction port of the suction pipe 11 Or the whole thing is oil level OL'
exposed and inhaling air. Also, the oil level is OL.
When ' is reached, part or all of the discharge port of the return pipe 10 is exposed from the oil surface OL', and the discharged oil agitates the oil surface and causes the hydraulic oil 5 to bubble with air.
そして、空気を含んだ作動油が油圧アクチュエータに送
られると、ポンプのキャビテーションの発生や騒音等の
問題を生ずる。When hydraulic oil containing air is sent to a hydraulic actuator, problems such as cavitation and noise in the pump occur.
本発明の目的は、建設機械等の傾きにより作動油タンク
自体が傾いても、傾斜上方の室内における作動油の油面
の低下を低減して、空気の吸入。An object of the present invention is to reduce the drop in the oil level of the hydraulic oil in a room above the slope and to draw in air even if the hydraulic oil tank itself is tilted due to the tilt of construction machinery, etc.
混入を防止することができる建設機械等の作動油タンク
を提供することにある。An object of the present invention is to provide a hydraulic oil tank for construction machinery, etc., which can prevent contamination.
上記目的は、隔壁にて区画された空気室を連絡する手段
を設け、タンク水平時には各空気室が連絡し、タンクが
一定角度以上に傾斜した時には各空気室が独立した室に
なるように構成することで、達成される。The above purpose is to provide a means to connect the air chambers divided by partition walls, so that when the tank is horizontal, each air chamber communicates, and when the tank is tilted beyond a certain angle, each air chamber becomes an independent chamber. It is achieved by doing.
傾斜地での作業により作動油タンク自体がある角度傾く
と、下方側となる室内の作動油の油面の上昇により当該
室と上方側の室との間で連絡手段を介しての空気の流通
が遮断され、それ以上傾くと各室の油面の傾きに限定さ
れる。これにより上方側の室内の油面の低下が低減され
、吸入管または戻り管の油面よりの露出が防がれる。When the hydraulic oil tank itself tilts at a certain angle due to work on a slope, the oil level of the hydraulic oil in the lower chamber rises, causing air to flow between the chamber and the upper chamber through the communication means. It is blocked, and if it tilts any further, it will be limited to the tilt of the oil level in each chamber. This reduces the drop in the oil level in the upper chamber and prevents the suction pipe or return pipe from being exposed above the oil level.
以下、本発明の一実施例を第１図ないし第３図により説
明する。第１図は本発明による作動油タンクの縦断面図
、第２図はその平面図、第３図は第２図の■−■矢視断
面図を示す０図において、第５図と同一符号のものは同
じもの、もしくは相当するものを表わしている。この作
動油タンクは、隔壁１７を設けてタンク内部を２つの室
１８．１９に区画し、かつ作動油５の油面下において前
記隔壁１７に連通用開口２０を設ける一方１作動油５の
油面ＯＬの適宜上方に、所定長さを有し、かつ両端を開
放したパイプ２１を隔壁１７を挿通させて設置し、その
パイプ２１を介して２つの室１８．１９間で空気の流通
が行われるように構成している。従って、室１８゜１９
内の油面は同一に保たれる。前記パイプ２１は補強用リ
ブ８をも挿通し、その補強用リブ８および前記隔壁１７
にて支持されている。An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is a longitudinal sectional view of a hydraulic oil tank according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along the ■-■ arrow in FIG. The two items represent the same or equivalent item. This hydraulic oil tank is provided with a partition wall 17 to divide the inside of the tank into two chambers 18 and 19, and a communication opening 20 is provided in the partition wall 17 below the oil level of the hydraulic oil 5. A pipe 21 having a predetermined length and open at both ends is installed through the partition wall 17 appropriately above the surface OL, and air is circulated between the two chambers 18 and 19 through the pipe 21. It is configured so that Therefore, chamber 18°19
The oil level inside is kept the same. The pipe 21 also passes through the reinforcing rib 8, and the reinforcing rib 8 and the partition wall 17
It is supported by
次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
傾斜地での作業により作動油タンク自体が傾いたとき、
例えば吸入管１１を有する側の室１９が上方に。When the hydraulic oil tank itself tilts due to work on a slope,
For example, the chamber 19 on the side with the suction pipe 11 is placed upward.
戻り管１０を有する側の室１８が下方になるように傾く
とき、作動油５の油面ＯＬもそれに応じてＯＬ’のよう
に傾くことになるが、室１８内の油面がパイプ２１の開
口部を塞ぐまでの間は、油面の上昇により室１８と室１
９との間で前記パイプ２１を介しての空気の流通が行わ
れるため、タンク全体で油面が傾く。When the chamber 18 on the side having the return pipe 10 is tilted downward, the oil level OL of the hydraulic oil 5 will also be tilted accordingly as shown in OL'; Until the opening is closed, chambers 18 and 1 are closed due to the rising oil level.
9 through the pipe 21, the oil level is tilted throughout the tank.
油面が傾きパイプ２１の開口部を塞ぐ油面ＯＬ３よりさ
らに油面が傾いた場合は室１８．１９の空気の流通が遮
断されて下方側の室１８内の空気は上方側の室１９へ移
動できず室１８．１９単独の油面の傾きとなり、これに
より室１９側の油面の低下が低減される。If the oil level is tilted further than the oil level OL3 that blocks the opening of the pipe 21, the air circulation in the chambers 18 and 19 is blocked and the air in the lower chamber 18 flows to the upper chamber 19. The oil level in the chambers 18 and 19 alone is tilted because it cannot be moved, thereby reducing the drop in the oil level on the chamber 19 side.
すなわち、室１８．１９間で空気の流通が行われる場合
の油面ＯＬ’に対して、室１９内では吸入管１１の吸込
口を露出させない油面ＯＬＩに保たれる。尚、ＯＬ２は
この時の室１８側の油面を示す。That is, in contrast to the oil level OL' when air is circulated between the chambers 18 and 19, the oil level OLI is maintained in the chamber 19 so that the suction port of the suction pipe 11 is not exposed. Note that OL2 indicates the oil level on the chamber 18 side at this time.
また、作動油タンクが前述と反対側に傾いたときには、
前述と同様の作用により室１８側の油面ば。Also, if the hydraulic oil tank tilts to the opposite side as mentioned above,
The oil level on the chamber 18 side is reduced by the same action as described above.
戻り管１０の排出口を露出させない位置に保たれる。The outlet of the return pipe 10 is kept in a position that does not expose it.
以上の如く、本実施例によれば、作動油タンク自体が傾
いても作動油の油面を、戻り管１０の排出口、吸入管１
１の吸込口を露出させない位置に保てるので、作動油中
への空気の混入、空気の吸込みを防止できる。その結果
、油圧アクチュエータは所定の油圧力を出すことができ
ると共に、油圧機器の寿命も伸びる。As described above, according to this embodiment, even if the hydraulic oil tank itself is tilted, the oil level of the hydraulic oil can be maintained between the outlet of the return pipe 10 and the suction pipe 1.
Since the suction port No. 1 can be kept in a position where it is not exposed, it is possible to prevent air from entering the hydraulic oil and from air being sucked in. As a result, the hydraulic actuator can generate a predetermined hydraulic pressure, and the life of the hydraulic equipment is also extended.
尚、本実施例においては、空気流通用のパイプとして９
両端開放のパイプ１６を用いた例を示したが、空気の連
絡効果が同じであれば他の形状でも同様である。In addition, in this example, 9 is used as a pipe for air circulation.
Although an example using a pipe 16 with both ends open is shown, other shapes may be used as long as the air communication effect is the same.
本発明によれば、作動油タンク自体が傾いても上方側の
室の油面の低下を低減できるので、空気の吸入、作動油
中への空気の混入を防ぐことができる。According to the present invention, even if the hydraulic oil tank itself is tilted, the drop in the oil level in the upper chamber can be reduced, thereby preventing air intake and mixing of air into the hydraulic oil.
第１図ないし第３図は本発明の一実施例を示し、第１図
は本発明による作動油タンクの縦断面図、第２図はその
平面図、第３図は第２図のｍ−ｍ矢視断面図、第４図は
作動油タンクを備えた油圧ショベルの側面図、第５図は
従来の作動油タンクを示す縦断面図である。
５・・・作動油、６・・・密閉タンク、１０・・・戻り
管、１１・・・吸入管、１７・・・隔壁、１８．１９・
・・室、２０・・・開口、２１・・・パイプ、ＯＬ、Ｏ
ＬＩ、ＯＬ２．ＯＬ３・ｍ面。1 to 3 show one embodiment of the present invention, in which FIG. 1 is a longitudinal cross-sectional view of a hydraulic oil tank according to the present invention, FIG. 2 is a plan view thereof, and FIG. 4 is a side view of a hydraulic excavator equipped with a hydraulic oil tank, and FIG. 5 is a longitudinal sectional view showing a conventional hydraulic oil tank. 5... Hydraulic oil, 6... Sealed tank, 10... Return pipe, 11... Suction pipe, 17... Bulkhead, 18.19.
...Chamber, 20...Opening, 21...Pipe, OL, O
LI, OL2. OL3・m side.
Claims (1)
部を区画し、かつ作動油の油面下において前記隔壁に連
通用開口を設けて成る建設機械等の作動油タンクにおい
て、区画された空気室を連絡する手段を設け、タンクが
水平時には各空気室が連絡し、タンクが一定角度以上に
傾斜した時には各空気室が独立した室になるようにした
ことを特徴とする建設機械等の作動油タンク。1. A hydraulic oil tank for construction machinery, etc., in which a partition wall is provided in a sealed tank containing hydraulic oil to partition the inside of the tank, and a communication opening is provided in the partition wall below the surface of the hydraulic oil. A construction machine, etc., characterized in that a means for connecting the air chambers is provided so that when the tank is horizontal, each air chamber communicates, and when the tank is tilted at a certain angle or more, each air chamber becomes an independent chamber. Hydraulic oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61245527A JPS63101501A (en) | 1986-10-17 | 1986-10-17 | Working oil tank for construction machine and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61245527A JPS63101501A (en) | 1986-10-17 | 1986-10-17 | Working oil tank for construction machine and the like |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63101501A true JPS63101501A (en) | 1988-05-06 |
| JPH0445681B2 JPH0445681B2 (en) | 1992-07-27 |
Family
ID=17135012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61245527A Granted JPS63101501A (en) | 1986-10-17 | 1986-10-17 | Working oil tank for construction machine and the like |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63101501A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5714218A (en) | 1995-08-21 | 1998-02-03 | Dainippon Printing Co., Ltd. | Ionizing radiation-curable resin composition for optical article, optical article, and surface light source |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS574241U (en) * | 1980-06-10 | 1982-01-09 |
-
1986
- 1986-10-17 JP JP61245527A patent/JPS63101501A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS574241U (en) * | 1980-06-10 | 1982-01-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0445681B2 (en) | 1992-07-27 |
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