JPS6446180U - - Google Patents
Info
- Publication number
- JPS6446180U JPS6446180U JP14185187U JP14185187U JPS6446180U JP S6446180 U JPS6446180 U JP S6446180U JP 14185187 U JP14185187 U JP 14185187U JP 14185187 U JP14185187 U JP 14185187U JP S6446180 U JPS6446180 U JP S6446180U
- Authority
- JP
- Japan
- Prior art keywords
- port
- pump
- travel
- spool
- pilot chamber
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 230000006854 communication Effects 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
図面第１〜３図はこの考案の実施例を示すもの
で、第１図は制御体の断面図、第２図は回路図、
第３図はスプールを切り換えた状態の断面図、第
４〜９図は従来の装置を示すもので、第４図は制
御体の断面図、第５図は回路図、第６〜９図はチ
ゼル作動装置の動作サイクルを示した断面図であ
る。
１…ハウジング、Ｐ１，Ｐ２…第１，２ポンプ
、２，３…第１，２ポンプポート、４，５…第１
，２走行ポート、６…アクチユエータポート、８
…スプール、９，１０…パイロツト室、１１…ス
プリング、Ｓ…チゼル作動装置、ｒ…流量検出オ
リフイス、２０…チエツク弁。
Figures 1 to 3 show an embodiment of this invention, with Figure 1 being a sectional view of the control body, Figure 2 being a circuit diagram,
Figure 3 is a sectional view of the spool being switched, Figures 4 to 9 show a conventional device, Figure 4 is a sectional view of the control body, Figure 5 is a circuit diagram, and Figures 6 to 9 are FIG. 3 is a cross-sectional view showing an operation cycle of the chisel actuating device. 1...Housing, P1 , P2 ...1st, 2nd pump, 2, 3...1st, 2nd pump port, 4, 5...1st
, 2 travel port, 6...actuator port, 8
... Spool, 9, 10... Pilot chamber, 11... Spring, S... Chisel actuating device, r... Flow rate detection orifice, 20... Check valve.
Claims (1)
プポートと、第２ポンプに連通する第２ポンプポ
ートと、第１走行用モータに連通する第１走行ポ
ートと、第２走行用モータに連通する第２走行ポ
ートと、チゼル作動装置に連通するアクチユエー
タポートとを形成するとともに、このハウジング
に内装したスプールの両端をパイロツト室に臨ま
せ、一方のパイロツト室にスプリングを作用させ
、しかも、これら両パイロツト室に第１ポンプポ
ートの圧力を導き、当該スプールがノーマル位置
にあるとき、第１，２ポンプポートと第１，２走
行ポートとを連通し、上記パイロツト室のスプリ
ングに抗してスプールが移動したとき、第１ポン
プポートとアクチユエータポートとを連通する構
成にしたチゼル作動制御装置において、上記第１
ポンプポートと第１走行ポートとを、スプールに
内装しかつ第１ポンプポートから第１走行ポート
への流通のみを許容するチエツク弁を介して連通
するとともに、上記第１ポンプポートとアクチユ
エータポートとの連通過程に流量検出オリフイス
を形成し、上記チエツク弁が、流量検出オリフイ
スの上流側の圧力に応じて開弁する構成にしたチ
ゼル作動制御装置。 The casing includes a first pump port communicating with the first pump, a second pump port communicating with the second pump, a first travel port communicating with the first travel motor, and a second travel port communicating with the second travel motor. In addition to forming two travel ports and an actuator port that communicates with the chisel actuating device, both ends of the spool installed in this housing face the pilot chamber, and a spring acts on one pilot chamber. The pressure of the first pump port is introduced into the pilot chamber, and when the spool is in the normal position, the first and second pump ports are communicated with the first and second running ports, and the spool is moved against the spring of the pilot chamber. In the chisel operation control device configured to communicate the first pump port and the actuator port when moved, the first
The pump port and the first travel port communicate with each other via a check valve that is installed in the spool and allows flow only from the first pump port to the first travel port, and the first pump port and the actuator port are connected to each other. A chisel operation control device, wherein a flow rate detection orifice is formed in a communication process with the flow rate detection orifice, and the check valve is configured to open in response to pressure on the upstream side of the flow rate detection orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14185187U JPH0637090Y2 (en) | 1987-09-17 | 1987-09-17 | Chisel operation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14185187U JPH0637090Y2 (en) | 1987-09-17 | 1987-09-17 | Chisel operation control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6446180U true JPS6446180U (en) | 1989-03-22 |
| JPH0637090Y2 JPH0637090Y2 (en) | 1994-09-28 |
Family
ID=31407290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14185187U Expired - Lifetime JPH0637090Y2 (en) | 1987-09-17 | 1987-09-17 | Chisel operation control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637090Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD966958S1 (en) | 2011-09-27 | 2022-10-18 | Oshkosh Corporation | Grille element |
-
1987
- 1987-09-17 JP JP14185187U patent/JPH0637090Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0637090Y2 (en) | 1994-09-28 |
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