JPH0242906U

JPH0242906U -

Info

Publication number: JPH0242906U
Application number: JP11962588U
Authority: JP
Priority date: 1988-09-12
Filing date: 1988-09-12
Publication date: 1990-03-26

Description

[Brief explanation of drawings]

第１図ないし第３図は本考案の一実施例を示す
図であつて、第１図はアスフアルトフイニツシヤ
の側面図、第２図は同アスフアルトフイニツシヤ
の平面図、第３図は同駆動装置の油圧回路図であ
る。１……後輪（車輪）、１０……油圧ポンプ、１
０ａ……第１ポート（吐出口）、１０ｂ……第２
ポート（戻り口）、２０……油圧モータ、２０ａ
……ポート（流入口）、２０ｂ……（排出口）、
２１……第１の管路（供給管路）、２３……第２
の管路（戻り管路）、２９……バイパス管路、３
０……バイパス弁（圧力感応形流量制御弁）。 Figures 1 to 3 are views showing an embodiment of the present invention, in which Figure 1 is a side view of an asphalt finisher, Figure 2 is a plan view of the asphalt finisher, and Figure 3 is a drive of the asphalt finisher. FIG. 3 is a hydraulic circuit diagram of the device. 1...Rear wheel (wheel), 10...Hydraulic pump, 1
0a...first port (discharge port), 10b...second
Port (return port), 20...Hydraulic motor, 20a
...Port (inflow port), 20b... (outlet port),
21...first pipe line (supply pipe line), 23...second pipe line
pipe line (return pipe line), 29... bypass pipe line, 3
0...Bypass valve (pressure sensitive flow control valve).

Claims

[Scope of utility model registration request]

A wheel drive device for a leveling machine, comprising: a hydraulic motor that drives the wheels of the leveling machine that runs by rotational motion of the wheels; and a hydraulic pump that pumps hydraulic oil to the hydraulic motor; A supply pipe connecting a discharge port of the hydraulic motor with a supply port of the hydraulic motor, and a return pipe connecting a return port of the hydraulic pump with a discharge port of the hydraulic motor are connected to each other. A bypass pipe is provided, and the bypass pipe is provided with a pressure-sensitive flow control valve that reduces the flow rate of hydraulic oil passing through the bypass pipe as the hydraulic oil pressure in the supply pipe increases. A wheel drive device for a leveling machine, which is characterized by the following: