JPS648423U - - Google Patents
Info
- Publication number
- JPS648423U JPS648423U JP10346887U JP10346887U JPS648423U JP S648423 U JPS648423 U JP S648423U JP 10346887 U JP10346887 U JP 10346887U JP 10346887 U JP10346887 U JP 10346887U JP S648423 U JPS648423 U JP S648423U
- Authority
- JP
- Japan
- Prior art keywords
- port
- hydraulic
- bush
- plunger
- hydraulic motor
- 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
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Motor Power Transmission Devices (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Control Of Fluid Gearings (AREA)
Description
第１図は本考案の油圧回路図、第２図は第１図
に示す３ポート分流形圧力補償付流量調整弁の詳
細図で、同図ａは外形図、ｂは同図ａのＸ―Ｘ断
面図、同図ｃは同図ａのＹ―Ｙ断面図、同図ｄは
スプールが移動した状態を示す。
１ａ，１ｂ…前輪、２ａ，２ｂ…後輪、１ａ，
１ｂ…前輪油圧モータ、２ａ，２ｂ…後輪油圧モ
ータ、３…油圧ポンプ、８…３ポート分流形圧力
補償付流量調整弁、９ａ…第１流出ポート、９ｂ
…第２流出ポート、１２…分流弁室、１４ａ…第
１流入ポート、１４ｂ…第２流入ポート、１５ａ
…分流路、１５ｂ…分流路、１７…ブツシユ、１
８…回動用ロツド、１９…プランジヤ、２４…油
室、３３…スプール、３５ａ，３５ｂ…ポペツト
弁。
Fig. 1 is a hydraulic circuit diagram of the present invention, Fig. 2 is a detailed view of the 3-port branch flow rate regulating valve with pressure compensation shown in Fig. 1, a is an external view, and b is an X-- The X cross-sectional view, the figure c, is a YY cross-sectional view of the figure a, and the figure d shows the state in which the spool has moved. 1a, 1b...front wheel, 2a, 2b...rear wheel, 1a,
1b...Front wheel hydraulic motor, 2a, 2b...Rear wheel hydraulic motor, 3...Hydraulic pump, 8...3-port flow regulating valve with pressure compensation, 9a...First outflow port, 9b
...Second outflow port, 12...Diversion valve chamber, 14a...First inflow port, 14b...Second inflow port, 15a
... Branch channel, 15b... Branch channel, 17... Bush, 1
8...Rotating rod, 19...Plunger, 24...Oil chamber, 33...Spool, 35a, 35b...Poppet valve.
Claims (1)
し、前輪軸油圧モータの入力口及び後輪軸油圧モ
ータの入力口をそれぞれ一台の油圧ポンプの吐出
側に装備した分流形圧力補償付流量制御弁の第１
流出ポート、第２流出ポートと接続し、前記各油
圧モータの出力口を前記油圧ポンプの吸入口と接
続して油圧回路を構成すると共に、前記分流形圧
力補償付流量調整弁の分流室を圧力補償弁の弁室
外に前記圧力補償弁の第１流入ポート及び第２流
入ポートと連通して設け、該分流弁室内に周壁約
１８０度に亘り適宜大きさの油孔を複数個配設し
たブツシユを外部からの回動操作により前記油孔
が前記第１、第２入力ポートと通じるごとく嵌挿
し、該ブツシユ内には周壁３６０度に亘り油孔を
複数個配設したプランジヤとこれを押圧するスプ
リングを収納し、これら油孔のオーバラツプ部分
の面積比は前記ブツシユの回動により随時変更し
得ると共にオーバラツプ面積はポンプ吐出量に応
じて変化する流体力の作用による前記プランジヤ
の摺動により適正値に自動調節し得るごとくなし
、前車輪あるいは後車輪に加わる負荷の変動及び
ポンプ吐出量に関係なく所定の分流比を保持し得
る全輪油圧駆動の作業用自走台車。 A hydraulic motor with a direct connection to a reducer is placed on each shaft of all wheels, and the input port of the front wheel shaft hydraulic motor and the input port of the rear wheel shaft hydraulic motor are each equipped on the discharge side of one hydraulic pump.Flow rate with split flow type pressure compensation. Control valve 1st
A hydraulic circuit is constructed by connecting an outflow port and a second outflow port, and connecting an output port of each of the hydraulic motors to an inlet of the hydraulic pump. A bushing provided outside the valve chamber of the compensating valve in communication with the first inflow port and the second inflow port of the pressure compensating valve, and having a plurality of appropriately sized oil holes arranged in the diversion valve chamber over approximately 180 degrees of the peripheral wall. is inserted into the bush by rotational operation from the outside so that the oil hole communicates with the first and second input ports, and a plunger having a plurality of oil holes arranged in a 360-degree circumferential wall inside the bush is pressed against the plunger. A spring is stored, and the area ratio of the overlapping portions of these oil holes can be changed at any time by rotating the bush, and the overlapping area is adjusted to an appropriate value by sliding the plunger under the action of fluid force that changes depending on the pump discharge amount. An all-wheel hydraulically driven self-propelled working trolley capable of automatically adjusting the flow rate and maintaining a predetermined division ratio regardless of changes in the load applied to the front wheels or rear wheels and the pump discharge amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10346887U JPH0744495Y2 (en) | 1987-07-06 | 1987-07-06 | All-wheel hydraulically driven work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10346887U JPH0744495Y2 (en) | 1987-07-06 | 1987-07-06 | All-wheel hydraulically driven work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS648423U true JPS648423U (en) | 1989-01-18 |
| JPH0744495Y2 JPH0744495Y2 (en) | 1995-10-11 |
Family
ID=31334328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10346887U Expired - Lifetime JPH0744495Y2 (en) | 1987-07-06 | 1987-07-06 | All-wheel hydraulically driven work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744495Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008190637A (en) * | 2007-02-05 | 2008-08-21 | Tadano Ltd | Hydraulic circuit for track traveling of track and road vehicle |
-
1987
- 1987-07-06 JP JP10346887U patent/JPH0744495Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008190637A (en) * | 2007-02-05 | 2008-08-21 | Tadano Ltd | Hydraulic circuit for track traveling of track and road vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0744495Y2 (en) | 1995-10-11 |
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