JPS6145679U

JPS6145679U - hydraulic control valve device

Info

Publication number: JPS6145679U
Application number: JP13117784U
Authority: JP
Inventors: 賢一霜浦; 賢介井奥; 武彦下賀; 宣昭高浜
Original assignee: 株式会社ナブコ
Priority date: 1984-08-28
Filing date: 1984-08-28
Publication date: 1986-03-26
Also published as: JPH0351523Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第゜１図はこの考案の実施例の回路構成と使用した弁の
主要部断面図、第２図は異なる状態の第１図の部分拡大
区、第３図は従来の油圧制御弁装置の回路構成と使用己
でいる弁の主要部断面図、第４図は第３図のＡ−Ａ断面
拡大図、第５図は第３−図のＢ−Ｂ断面拡大図、第６図
は第３図の流量制御弁４ａｔ４３’の拡大断面図、第ｉ
図は第３図のスプール５の絞りｅを形成する部分を示し
ａは断面図、ｂはａの平面図、第８図は第３図のスブー
ル５の絞りｅ２’Ｇ形成する部分を示しａは断面図、ｂ
はａの平面図、第９図は第３図の方向切換弁のスプール
の移動距離に対する絞りｅ１（又はｅ１′）及び絞りｅ
２′（又はｅ２）の開口面積の変化する状態を示すグラ
フである。１・・・・・・パイロット弁、２・・・・・・方向切換
弁、３・・・・・・クロスオーバリリーフ弁、４ａｔ
４”・・・・・・流量制御弁、ｐ，ｉｂ・・・・・
・油圧源、Ｐ１，Ｐ２・・・・・・ポート（パイロット
部接続）、Ｐ３・・・・・・ポート（油圧源接続）、２
’ａ，２ｂ・・・・・・パイロット部、５・・・・
・・スプール（方向切換弁の）、Ｔ，，Ｔ２・・・・・
・ポート（タンク接続）、６・・・・・・ｉ圧モータ、
Ｍ１，Ｍ２・・・・・・ポート（油圧モータ接続）、ｅ
，，ｅ′，ｅ２，ｅ２′・・・・・・絞り、２０ａ，２
０ａ’・・・・・・通路、２１ａ，２１ａ’・・・・・
・溝、５ａｔ −５ａ’・・・・・・スプール端部の
肩。Figure 1 is a sectional view of the circuit configuration of an embodiment of this invention and the main parts of the valve used, Figure 2 is a partially enlarged section of Figure 1 in a different state, and Figure 3 is a circuit of a conventional hydraulic control valve device. Figure 4 is an enlarged cross-sectional view taken along line A-A in Figure 3, Figure 5 is an enlarged cross-sectional view taken along line B-B in Figure 3, and Figure 6 is an enlarged cross-sectional view taken along line B-B in Figure 3. An enlarged sectional view of the flow control valve 4at43' in the figure, i-th
The figure shows the part forming the aperture e of the spool 5 in Fig. 3, a is a sectional view, b is a plan view of a, and Fig. 8 shows the part forming the aperture e2'G of the spool 5 in Fig. is a cross-sectional view, b
is a plan view of a, and FIG. 9 is a diagram showing the aperture e1 (or e1') and e
2' (or e2) is a graph showing changes in the opening area. 1... Pilot valve, 2... Directional switching valve, 3... Crossover relief valve, 4 at
4”...Flow control valve, p, ib...
・Hydraulic power source, P1, P2... port (pilot part connection), P3... port (hydraulic power source connection), 2
'a, 2 b...Pilot part, 5...
...Spool (of directional control valve), T,, T2...
・Port (tank connection), 6...i pressure motor,
M1, M2...port (hydraulic motor connection), e
,, e', e2, e2'... Diaphragm, 20a, 2
0a'...Aisle, 21a, 21a'...
・Groove, 5 at -5a'...Shoulder at the end of the spool.

Claims

[Scope of utility model registration request]

A hydraulic pilot type directional control valve is disposed between the hydraulic power source and the hydraulic motor, and a flow rate is controlled between the pilot chamber of the directional control valve and the pilot valve so as to keep the moving speed of the directional control valve constant. A hydraulic control valve device comprising a control valve and configured such that a change in opening area in a passage from the hydraulic source to the hydraulic motor due to movement of the spool is larger than a change in opening area in the passage from the hydraulic motor to the tank. , when the spool is within a movement range between the switching position and a predetermined midway position where the exhaust pressure restriction of the hydraulic motor begins to be formed when going from the switching position to the neutral position, A hydraulic control valve device comprising a passage controlled by the spool so as to communicate with the pilot chamber.