JPS5810260B2 - Fluid pressure driven work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a fluid pressure system configured to independently drive left and right traveling devices by variable speed fluid pressure drive devices.
Regarding drive-type work vehicles.

If the drive device is transmitting power from only one of the drive devices to drive a working device such as the reaping device of a combine harvester, the drive device must be stopped or decelerated when turning. As a result, the work equipment is stopped or decelerated, resulting in a problem of deterioration of work efficiency.

In view of the above-mentioned circumstances, the present invention has been developed to improve work efficiency by transmitting power from the driving device for the traveling device to the working device, but preventing the working device from stopping or decelerating even when turning. The aim is to ensure that it does not deteriorate.

Next, embodiments of the present invention will be described based on the drawings.

A frame body 2 that is vertically swingable around a horizontal axis is extended forward from a body equipped with a pair of left and right crawler traveling devices 1, 1, and a culm pulling device 3, a culm reaping device 4, and a frame body 2 are extended to the rear of the body. A pre-processing device A consisting of a shell culm conveying device 5 is provided on the frame 2 so that the cutting height can be adjusted by swinging the frame 2. A threshing device 7 with the starting end of the chain 6 facing is provided on the machine body, and a waste straw processing device 8 for shredding and discharging the threshed waste straw is attached to the rear of the threshing device 7. Accordingly, the combine harvester is capable of raising and reaping the husks, threshing the cut husks, and shredding the waste straw.

A left hydraulic drive device 9 is movably connected to the left traveling device 1 and is operated to change speed and reverse rotation by changing the shoulder plate angle, and is interlockingly connected to the right traveling device 1 and connected to said driving device 9. The left side hydraulic drive device 9 is configured to transmit power from the engine 10 to each of the left side hydraulic drive devices 9, which are similarly operated, so that the left and right traveling devices 1, 1 can be driven independently.

To perform one drive of the reaping device 4, the reaping device 4 and the driving devices 9, 9 are interlocked and connected as described below.

That is, a rotary plate 12 is fixed to each of the output shafts 11 of both drive devices 9, 9, and one pulley (1) is provided for carrying a belt across both rotary plates 12, 12 and the pulley 22 on the preprocessing device A side. In addition to constructing the transmission device 13, a ball type clutch mechanism 14 is interposed between each rotary plate 12 and the pulley 13 so that only one direction of rotation is transmitted from the rotary plate 12 to the pulley 13. The reaping device 4 is configured so as not to operate when the aircraft is moved backward, and both drive devices 9 are
, 9, the drive device 9 is rotating at high speed, and if one drive device 9 is stopped or rotating in reverse, the other drive device 9 is rotating in the forward direction.
A switching mechanism 15 is configured to selectively transmit power to the pulley 13 from the side, so that even when one drive device 9 is stopped for turning the aircraft, decelerated, or driven backward, the other drive device 9 is switched on. The reaping device 4 is configured so that power is transmitted from the reaping device 9 to operate the reaping device 4.

To configure the operating threads for the two drive devices 9, 9, the operating rods 16 of the two drive devices 9, 9 and one operating lever 17 that can be operated crosswise are interlocked and connected, and the lever 1
7 to operate both drive devices 9,9.

That is, when the lever 17 is swung around the horizontal axis 18, the two gears 19° 19 interlocked with each of the operating rods 16 move around the horizontal axis 18.
Since the two drive devices 9,9 are rotated simultaneously and in the same direction, the speeds of both drive devices 9,9 are changed to the same rotational level at the same time and in the same direction, and when the lever 17 is swung around the vertical axis 20, Since both gears 19.19 are rotated simultaneously and in opposite directions around the horizontal axis 18 by a gear 21 fixed to the lever 17, both drive devices 9, 9 are rotated at the same time, with one rotating in the opposite direction and the other rotating in the forward direction. Or, the gears are shifted to different stages, such as when both gears rotate at the same speed but have different gear shift levels.

In addition, in place of the reaping device 4, the waste straw processing device 8
Both the drive devices 9, 9 are connected to various devices such as the conveyance device 5, etc.
The power may be transmitted from the working device 4, and these are collectively referred to as the working device 4.

Furthermore, the present invention is applicable not only to combines but also to various types of work vehicles such as agricultural work vehicles such as agricultural tractors, and earthmoving work vehicles such as backhoes.

In short, the fluid pressure driven work vehicle according to the present invention is configured such that the left and right traveling devices are driven independently by two variable speed fluid pressure drive devices, and the power from both drive devices is unified. Its technical feature is that the power is input to one transmission tool through a one-way clutch mechanism that allows free rotation only in one direction, and the power is extracted from this transmission tool to the working device. The following effects can be expected.

In other words, among the two drive devices that independently drive the left and right traveling devices, the work device is driven by the high-speed rotating device that rotates in the forward direction, so one of the drive devices can be stopped, reversed, or Even when the machine is decelerated, the work equipment can always be driven in the normal direction at high speed, preventing a decline in work efficiency due to machine rotation.

[Brief explanation of drawings]

The drawings show an embodiment of a hydraulically driven work vehicle according to the present invention, in which Fig. 1 is an overall side view of a combine harvester, Fig. 2 is a drive system diagram, Fig. 3 is a power transmission mechanism diagram, and Fig. 4 is a diagram of a power transmission mechanism. FIG. 3 is a diagram of the operating mechanism of the drive device. 1... Traveling device, 4... Working device, 9
... Drive device, 14, 15 ... Mechanism.

Claims (1)

[Claims] 1 The left and right traveling devices 1, 1 are configured to be independently driven by two variable-speed fluid pressure drive devices 9, 9, respectively, and the power from both drive devices 9, 9 is directed only in one direction. One-way clutch mechanism that allows free rotation 14.1
4 to one transmission device 13, and this transmission device 13
A fluid pressure driven work vehicle characterized in that it is configured to extract power from the work device 4 to the work device 4.