JPH0170624U - - Google Patents
Info
- Publication number
- JPH0170624U JPH0170624U JP1987166567U JP16656787U JPH0170624U JP H0170624 U JPH0170624 U JP H0170624U JP 1987166567 U JP1987166567 U JP 1987166567U JP 16656787 U JP16656787 U JP 16656787U JP H0170624 U JPH0170624 U JP H0170624U
- Authority
- JP
- Japan
- Prior art keywords
- switching operation
- construction vehicle
- hydraulic
- hydraulic actuator
- transmission
- 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
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Motor Power Transmission Devices (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
Description
第１図は、この考案の実施例である建設車両の
変速制御装置の構成を示す説明図、第２図は制御
回路図、第３図は切換動作のタイムチヤートであ
る。
図中、１は原動機、２は油圧ポンプ、３は油圧
モータ、４は駆動回路、５は変速機、７はタイヤ
、８は切換操作用油圧シリンダ、９はバイパス用
切換弁、１０はバイパス管路、１１はチヤージン
グポンプ、１２は変速用切換弁、１３は作動回路
、１４は油タンクである。
FIG. 1 is an explanatory diagram showing the configuration of a transmission control device for a construction vehicle which is an embodiment of this invention, FIG. 2 is a control circuit diagram, and FIG. 3 is a time chart of a switching operation. In the figure, 1 is a prime mover, 2 is a hydraulic pump, 3 is a hydraulic motor, 4 is a drive circuit, 5 is a transmission, 7 is a tire, 8 is a hydraulic cylinder for switching operation, 9 is a switching valve for bypass, 10 is a bypass pipe 11 is a charging pump, 12 is a gear changeover valve, 13 is an operating circuit, and 14 is an oil tank.
Claims (1)
圧ポンプと、油圧モータと、変速機とを備えた建
設車両において、前記変速機に切換操作用油圧ア
クチユエータを設けると共に、前記油圧モータの
駆動回路に該駆動回路をバイパスさせるバイパス
管路を接続し、且つ、前記切換操作用油圧アクチ
ユエータの作動回路に前記バイパス管路の連通状
態で切換えられる変速用切換弁を設けたことを特
徴とする建設車両の変速制御装置。 In a construction vehicle equipped with a hydraulic pump, a hydraulic motor, and a transmission for transmitting power of a prime mover to a traveling device, the transmission is provided with a hydraulic actuator for switching operation, and the drive circuit of the hydraulic motor is provided with a hydraulic actuator for switching operation. A construction vehicle, characterized in that a bypass pipe for bypassing the drive circuit is connected to the construction vehicle, and a shift valve is provided in the operating circuit of the switching operation hydraulic actuator to be switched when the bypass pipe is in communication. Gear shift control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166567U JPH0170624U (en) | 1987-10-30 | 1987-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166567U JPH0170624U (en) | 1987-10-30 | 1987-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0170624U true JPH0170624U (en) | 1989-05-11 |
Family
ID=31454064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987166567U Pending JPH0170624U (en) | 1987-10-30 | 1987-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0170624U (en) |
-
1987
- 1987-10-30 JP JP1987166567U patent/JPH0170624U/ja active Pending
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