JPH0533575Y2 - - Google Patents
Info
- Publication number
- JPH0533575Y2 JPH0533575Y2 JP9407586U JP9407586U JPH0533575Y2 JP H0533575 Y2 JPH0533575 Y2 JP H0533575Y2 JP 9407586 U JP9407586 U JP 9407586U JP 9407586 U JP9407586 U JP 9407586U JP H0533575 Y2 JPH0533575 Y2 JP H0533575Y2
- Authority
- JP
- Japan
- Prior art keywords
- bucket
- cylinder
- bucket cylinder
- switching valve
- movement
- 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 - Lifetime
Links
- 230000032258 transport Effects 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 230000000669 biting effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案はトンネル、ダム、道路、住宅造成、
建築物の基礎工事その他各種の土木工事或いは建
設工事等において使用される掘削機に関する。[Detailed explanation of the invention] Industrial application field This invention is used for tunnels, dams, roads, housing development,
This product relates to excavators used in building foundation work and various other civil engineering or construction works.
従来技術
掘削機の代表的な機種として知られるものにシ
ヨベル系掘削機がある。この掘削機を使用して例
えば地面を掘削する際には、バケツトを地面につ
き立てゝ掻き込むようにして作動させるが、掘削
時にはときとして堅い地盤や地中に埋まる障害物
に喰い込み、バケツトの作動に大きな負荷がかゝ
ることがある。そしてこのためにバケツトの爪な
ど機械に損傷を与えることがある。Prior Art A shovel type excavator is known as a typical model of excavator. When using this excavator to excavate the ground, for example, it operates by standing the bucket on the ground and scraping, but when excavating, it sometimes bites into hard ground or obstacles buried in the ground, preventing the bucket from operating. A large load may be applied. This can cause damage to machinery such as bucket claws.
考案が解決しようとする問題点
この考案は過負荷による機械の損傷を最小限に
とゞめるために負荷が一定値に達するとバケツト
が自動的に逆作動して堅い地盤や障害物等から外
れるようにしたものである。Problems that the invention aims to solve: In order to minimize damage to the machine due to overload, the bucket automatically operates in reverse when the load reaches a certain value to prevent damage to the machine from hard ground or obstacles. It was made to come off.
問題点を解決するための手段
本案はそのためバケツトを作動させるバケツト
シリンダーにポンプからの吐出し圧が一定圧に達
すると切換えられ、バケツトシリンダーの動きの
方向を変えるパイロツト操作切換弁を設けたもの
である。Measures to Solve the Problem Therefore, this proposal is equipped with a pilot-operated switching valve that changes the direction of movement of the bucket cylinder when the discharge pressure from the pump reaches a certain pressure, which is switched to the bucket cylinder that operates the bucket. It is something.
ここでバケツトシリンダーは、バケツトとブー
ムを連結し、該バケツトの向きを変えるシリンダ
ー或いはブラケツトとブームを連結し、ブームの
向きを変えるシリンダー等からなるものとする。 Here, the bucket cylinder is a cylinder that connects a bucket and a boom to change the direction of the bucket, or a cylinder that connects a bracket and a boom to change the direction of the boom.
使用される流体は、作動油或いはエアーであ
る。 The fluid used is hydraulic oil or air.
実施例
第１図は滑り台状の本体１にコンベア（図示し
ない）を設置し、バケツト３により土砂、岩石、
瓦礫等をコンベア端に掻き込んでコンベアに載
せ、コンベア他端に待機する運搬車両上まで搬送
するずり積み機を示すもので、ブーム４とバケツ
ト３を連結するバケツトシリンダー５に第２図に
示されるように、パイロツト操作切換弁６及び手
動操作切換弁７を介して油圧ポンプ８に連結さ
れ、該ポンプから吐出し圧が切換弁７及び６を経
てバケツトシリンダー５に流入し、バケツト３を
第１図の反時計方向に回動させるようになつてお
り、バケツトの回動に大きな負荷がかゝり、上記
吐出し圧が圧力調整弁１０の設定値に達するとパ
イロツト操作切換弁６が切換わり、バケツトシリ
ンダー５の動きの方向が変わるようになつてい
る。Embodiment Figure 1 shows a conveyor (not shown) installed on a slide-shaped main body 1, and a bucket 3 to transport soil, rocks, etc.
This is a stacking machine that scoops debris, etc. onto the end of a conveyor, places it on the conveyor, and transports it to a transport vehicle waiting at the other end of the conveyor. As shown, it is connected to a hydraulic pump 8 via a pilot-operated switching valve 6 and a manually-operated switching valve 7, and the discharge pressure from the pump flows into the bucket cylinder 5 via the switching valves 7 and 6, and the bucket cylinder 5 The bucket is rotated in the counterclockwise direction in FIG. is switched, and the direction of movement of the bucket cylinder 5 is changed.
本装置は以上のような回路を備え、掘削時には
手動操作切換弁７を切換えることにより油圧ポン
プ８からの吐出し圧がバケツトシリンダー５に流
入し、該シリンダー５を作動させてバケツト３を
地面につき立てゝ回動させるが、このときバケツ
ト３が岩盤や障害物等に喰い込んでポンプ７から
の吐出し圧が圧力調整弁１０の設定値に達する
と、上述するようにバケツトシリンダー５の動く
方向が変わり、バケツト３を第１図の時計方向に
回動させ、岩盤や障害物等から一旦外す。バケツ
トシリンダー５の動く方向が変わることにより油
圧が切換弁５及び６を介してタンク９に戻され、
これに伴いパイロツト圧が低下する。すると再び
パイロツト操作切換弁６が切換わり、バケツトシ
リンダー５の動く方向を変える。しかしてバケツ
トによる喰い込み動作が繰返される。 This device is equipped with the circuit as described above, and when excavating, by switching the manually operated switching valve 7, the discharge pressure from the hydraulic pump 8 flows into the bucket cylinder 5, which operates the cylinder 5 to move the bucket 3 to the ground. At this time, when the bucket cylinder 3 bites into a bedrock or an obstacle and the discharge pressure from the pump 7 reaches the set value of the pressure regulating valve 10, the bucket cylinder 5 is rotated as described above. The direction of movement changes, and the bucket 3 is rotated clockwise as shown in Figure 1 to remove it from the bedrock or obstacle. By changing the direction of movement of the bucket cylinder 5, hydraulic pressure is returned to the tank 9 via the switching valves 5 and 6.
As a result, the pilot pressure decreases. Then, the pilot operation switching valve 6 is switched again and the direction of movement of the bucket cylinder 5 is changed. Thus, the biting action by the bucket is repeated.
考案の効果
この考案の掘削機は以上のように、バケツトが
岩盤や障害物に喰い込む等してバケツトの作動に
大きな負荷がかゝるようになると自動的に逆作動
して上記の岩盤や障害物等から一旦外れるので、
バケツトの爪など機械に損傷を与えることがな
い。Effects of the invention As described above, the excavator of this invention automatically operates in reverse when a large load is applied to the operation of the bucket, such as when the bucket bites into bedrock or an obstacle. Once you are free of obstacles, etc.,
Bucket claws do not cause damage to the machine.
第１図はずり積み機の正面図、第２図は油圧回
路図である。
３……バケツト、４……ブーム、５……バケツ
トシリンダー、６……パイロツト操作切換弁、７
……手動操作切換弁、８……油圧ポンプ。
FIG. 1 is a front view of the stacker, and FIG. 2 is a hydraulic circuit diagram. 3... Bucket, 4... Boom, 5... Bucket cylinder, 6... Pilot operation switching valve, 7
...Manual operation switching valve, 8...Hydraulic pump.
Claims (1)
ンプからの吐出し圧が一定圧に達すると切換えら
れ、バケツトシリンダーの動きの方向を変えるパ
イロツト操作切換弁を設けたことを特徴とする掘
削機。 An excavator characterized in that a bucket cylinder for operating a bucket is provided with a pilot operation switching valve that is switched when the discharge pressure from a pump reaches a certain pressure to change the direction of movement of the bucket cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9407586U JPH0533575Y2 (en) | 1986-06-19 | 1986-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9407586U JPH0533575Y2 (en) | 1986-06-19 | 1986-06-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS631066U JPS631066U (en) | 1988-01-06 |
| JPH0533575Y2 true JPH0533575Y2 (en) | 1993-08-26 |
Family
ID=30957189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9407586U Expired - Lifetime JPH0533575Y2 (en) | 1986-06-19 | 1986-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0533575Y2 (en) |
-
1986
- 1986-06-19 JP JP9407586U patent/JPH0533575Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS631066U (en) | 1988-01-06 |
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