JPH0426248U - - Google Patents
Info
- Publication number
- JPH0426248U JPH0426248U JP6487390U JP6487390U JPH0426248U JP H0426248 U JPH0426248 U JP H0426248U JP 6487390 U JP6487390 U JP 6487390U JP 6487390 U JP6487390 U JP 6487390U JP H0426248 U JPH0426248 U JP H0426248U
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- cylinder
- side chamber
- earthwork
- link
- 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 6
- 230000009977 dual effect Effects 0.000 description 2
Description
第１図はブルドーザの外観図、第２図は土工板
ピツチ運動の説明図、第３図は土工板チルト運動
の説明図、第４図は本考案の土工板リンク構成図
、第５図は本考案の油圧回路図、第６図は本考案
の作動説明図、第７図は従来の土工板リンク構成
図、第８図は従来の油圧回路図。
２……土工板、３，４……フレーム、５……第
１チルトシリンダ、６……第２チルトシリンダ、
１０……リンク、１１……第１ピツチシリンダ、
１２……第２ピツチシリンダ、１７……油圧ポン
プ、１８……タンク、２０……方向切換弁、２１
……ピツチ用切換弁、２２……デユアルチルト用
切換弁、２３……ピツチ用ソレノイド弁、２４…
…デユアルチルト用ソレノイド弁。
Figure 1 is an external view of the bulldozer, Figure 2 is an explanatory diagram of the pitch movement of the earthwork plate, Figure 3 is an illustration of the tilt movement of the earthwork plate, Figure 4 is a configuration diagram of the earthwork plate link of the present invention, and Figure 5 is an illustration of the earthwork plate linkage of the present invention. A hydraulic circuit diagram of the present invention, FIG. 6 is an explanatory diagram of the operation of the present invention, FIG. 7 is a configuration diagram of a conventional earthwork plate link, and FIG. 8 is a conventional hydraulic circuit diagram. 2... Earthwork board, 3, 4... Frame, 5... First tilt cylinder, 6... Second tilt cylinder,
10... Link, 11... First pitch cylinder,
12... Second pitch cylinder, 17... Hydraulic pump, 18... Tank, 20... Directional switching valve, 21
...Pitch switching valve, 22...Dual tilt switching valve, 23...Pitch solenoid valve, 24...
...Solenoid valve for dual tilt.
Claims (1)
工板下部と車体とを連結する左右のフレームの上
部にリンクの下端を軸着し、前記リンクの上端と
前記土工板の上部とをチルトシリンダにより連結
するとともに、前記リンクの上端と前記フレーム
とをピツチシリンダにより連結せることを特徴と
する土工板スピードピツチ装置。 (2) 油圧ポンプおよびタンクと方向切換弁とを
それぞれ接続し、一方の第１ピツチシリンダのヘ
ツド側室と前記方向切換弁とを接続し、前記第１
ピツチシリンダのボトム側室と他方の第２ピツチ
シリンダのヘツド側室とを接続し、前記第２ピツ
チシリンダのボトム側室と前記第２ピツチシリン
ダと同一側にある第２チルトシリンダのボトム側
室とを接続し、前記第２チルトシリンダのヘツド
側室と前記第１ピツチシリンダと同一側にある第
１チルトシリンダのボトム側室とを接続し、前記
第１チルトシリンダのヘツド側室と前記方向切換
弁とを接続したことを特徴とする請求項１記載の
土工板スピードピツチ装置。[Claims for Utility Model Registration] (1) In an earthwork board device capable of pitch movement, the lower end of the link is pivoted to the upper part of the left and right frames connecting the lower part of the earthwork board and the vehicle body, and the upper end of the link and the earthwork An earthwork board speed pitch device characterized in that the upper part of the board is connected by a tilt cylinder, and the upper end of the link and the frame are connected by a pitch cylinder. (2) Connect the hydraulic pump and tank to the directional switching valve, connect the head side chamber of one of the first pitch cylinders to the directional switching valve, and connect the directional switching valve to the first pitch cylinder.
A bottom side chamber of the pitch cylinder is connected to a head side chamber of the other second pitch cylinder, and a bottom side chamber of the second pitch cylinder is connected to a bottom side chamber of a second tilt cylinder located on the same side as the second pitch cylinder. , a head side chamber of the second tilt cylinder is connected to a bottom side chamber of the first tilt cylinder located on the same side as the first pitch cylinder, and a head side chamber of the first tilt cylinder is connected to the directional control valve. The earthwork board speed pitching device according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6487390U JPH0426248U (en) | 1990-06-19 | 1990-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6487390U JPH0426248U (en) | 1990-06-19 | 1990-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0426248U true JPH0426248U (en) | 1992-03-02 |
Family
ID=31596196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6487390U Pending JPH0426248U (en) | 1990-06-19 | 1990-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0426248U (en) |
-
1990
- 1990-06-19 JP JP6487390U patent/JPH0426248U/ja active Pending
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