Working vehicle
First Claim
1. A working vehicle, comprising:
- left and right traveling devices;
a pair of hydraulic traveling motors installed to drive the traveling devices;
a pair of hydraulic directional control valves provided for the respective hydraulic traveling motors in order to control traveling of the working vehicle;
a hydraulic pilot type control device provided in the working vehicle;
a pilot oil-passage for feeding pilot oil to the hydraulic pilot type control device;
a throttle valve provided in the pilot oil-passage;
a low pressure oil-passage;
a pressure switch; and
a warning device, wherein the throttle valve is connected to the low pressure oil-passage after passing serially through the pair of hydraulic directional control valves below the throttle valve, wherein the pressure switch is operated by hydraulic pressure within an oil-passage between the throttle valve and an upstream one of both the hydraulic directional control valves, and wherein the warning device is operated on the basis of the on-off of the pressure switch.
1 Assignment
0 Petitions
Accused Products
Abstract
In a working vehicle which includes left and right traveling devices, a pair of hydraulic traveling motors are installed to drive the respective traveling devices, and a pair of hydraulic directional control valves are provided for the respective hydraulic traveling motors in order to control the traveling of the vehicle. A throttle valve is provided in a pilot oil-passage, and connected to a drain oil-passage after passing serially through the pair of hydraulic directional control valves below the throttle valve. A pressure switch for warning the traveling state is operated by a pilot hydraulic pressure which is pressure of oil within an oil-passage between the throttle valve and an upstream one of the left and right hydraulic directional control valves.
19 Citations
3 Claims
-
1. A working vehicle, comprising:
-
left and right traveling devices;
a pair of hydraulic traveling motors installed to drive the traveling devices;
a pair of hydraulic directional control valves provided for the respective hydraulic traveling motors in order to control traveling of the working vehicle;
a hydraulic pilot type control device provided in the working vehicle;
a pilot oil-passage for feeding pilot oil to the hydraulic pilot type control device;
a throttle valve provided in the pilot oil-passage;
a low pressure oil-passage;
a pressure switch; and
a warning device, wherein the throttle valve is connected to the low pressure oil-passage after passing serially through the pair of hydraulic directional control valves below the throttle valve, wherein the pressure switch is operated by hydraulic pressure within an oil-passage between the throttle valve and an upstream one of both the hydraulic directional control valves, and wherein the warning device is operated on the basis of the on-off of the pressure switch.
-
-
2. A working vehicle, comprising:
-
a traveling device; and
a traveling warning system, including, a detector detecting whether the working vehicle is in a traveling state, and a warning sound generating means electrically connected with an output contact of the detector, and a controlling means provided in the warning sound generating means so as to control a volume of warning sound. - View Dependent Claims (3)
-
Specification