JPH0412873Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a reaping harvester equipped with a crawler traveling device, and more specifically, the present invention relates to a reaping and harvesting machine equipped with a crawler traveling device. Concerning improvements.

[Conventional technology]

Crawler-type reaping and harvesting machines, such as combines, usually use transport vehicles to go to and from distant fields, and as mentioned above, it is desired that they can be self-propelled at high speeds on wheels.

By the way, the above-mentioned two types of switching technology are often seen in earthmoving vehicles, and for example, as disclosed in Japanese Utility Model Application Publication No. 16698/1983, there is a means for attaching and detaching auxiliary wheels to the front and back of the outside of the crawler traveling device, 1977-
As disclosed in Japanese Patent No. 66879, a typical example is a means for driving the auxiliary traveling wheels up and down between the left and right crawler traveling devices.

[Problem that the invention attempts to solve]

However, in the former known technology, the auxiliary traveling wheels are attached to and detached from the crawler traveling device.
It was necessary to jack up the aircraft to attach and remove the wheels, and switching the running mode required a great deal of effort and effort.

In addition, the latter known technology does not have the problems of the former because it moves up and down the auxiliary wheels prepared in advance, and has the advantage of being able to easily and quickly switch the driving mode. Due to the configuration provided between the crawler traveling devices, the left-right spacing between the wheels was narrower than when the crawler was traveling, which caused some problems in terms of the lateral stability of the aircraft.

In addition, the auxiliary traveling wheels between the left and right crawler traveling devices are housed below the main frame of the aircraft, so they cannot be raised very much, which lowers the minimum ground clearance of the aircraft including the wheels, making it difficult for the crawler to operate in wetlands. When traveling, the auxiliary wheels housed in the underbelly of the aircraft would get stuck in the mud, increasing propulsion resistance.

In other words, the conventionally known technology cannot be directly applied to the reaping harvester.

The present invention was developed in view of the above-mentioned circumstances, and is a crawler running type that can easily switch between the running mode during reaping work and the running mode when running on the road, and also has a simple running structure. The purpose is to provide reaping and harvesting machines.

[Means for solving problems]

The crawler traveling type reaping harvester according to the present invention is
In order to achieve the above object, the front and rear parts of the aircraft are equipped with a pair of left and right crawler traveling devices, and are capable of being driven up and down vertically on the lower surface of the ground-contacting side of the crawler traveling devices, and are capable of moving up and down in the horizontal direction of the crawler traveling devices. An auxiliary running wheel is provided outside, and the auxiliary running wheel is configured to be able to rise and fall freely via a pair of parallel four-link mechanisms provided on both left and right sides of the crawler running device, and the left and right parallel four-way link mechanism The linkage mechanisms are connected to one elevating drive device for elevating and lowering so as to be operated in synchronization with each other, and the left and right auxiliary traveling wheels are driven in conjunction with the crawler traveling device. A characteristic configuration is that it is configured so that it can be interlocked and connected to the shaft.

The functions and effects of this characteristic configuration are as follows.

[Effect]

In other words, during reaping work, if the parallel four-link mechanism is set in the raised position by the lifting drive device, the crawler traveling device alone will be used to move the parallel link mechanism. All the auxiliary wheels can be lowered to the ground by simply switching the four-link mechanism to the lowering position, and the auxiliary wheels can be brought into contact with the ground with a wide gap on the outside of the pair of left and right crawler traveling devices. This allows the aircraft to be supported stably and maintains stability during high-speed travel.

Furthermore, since the auxiliary wheels are driven in conjunction with the drive shaft for driving the crawler traveling device, there is no need to separately provide a drive system exclusively for driving the auxiliary wheels.

[Effect of idea]

Therefore, according to the present invention, by integrally swinging the four auxiliary wheels up and down, it is possible to easily and quickly switch between the field running mode using the crawler traveling device and the road running mode using the auxiliary wheels. In addition to improving the efficiency of switching work,
Since the crawler traveling device and the auxiliary wheel transmission mechanism are shared, the transmission structure can be simplified, and the overall structure of the traveling device capable of switching the traveling mode can be simplified.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figure 1 shows a side view of a combine harvester, which is an example of a reaping harvester, and is equipped with a pre-processing device 3 in front of a machine body 2 equipped with a threshing device 1, as well as left and right crawler traveling devices 4, 4 and a wheel traveling device 5. The structure is such that it can run on crawlers during reaping and harvesting operations, and can run on wheels when traveling on the road.

The crawler traveling devices 4, 4 include a driving sprocket 7, a driven wheel 8, and idle wheels 9, 9 provided in between, a driving sprocket 7 disposed on a track frame 6 that supports the body 2.
A rubber crawler 10 is wound around the rubber crawler 10, and the rotation of a drive shaft 12 extending from a mission case 11 is transmitted to a drive sprocket 7 via a clutch 13, which will be described later, so that the crawler can run.

The wheel traveling device 5 includes a pair of left and right front and rear wheels 14, 14 driven by the rotation of the drive shaft 12.
Tire-type auxiliary traveling wheels 14, 14 consisting of It is configured to be driven and oscillated up and down between the position and the body lifting position below the grounding side lower surface 17.

The parallel four-link mechanism 15 includes a drive shaft 12, a front wheel transmission case 19 attached to the front axle 18, a swing shaft 20 horizontally mounted on the truck frame 6, and a rear axle 2.
1, and a rear wheel transmission case 23 attached to the front axle 18 and the rear axle 21.

The front wheel transmission case 19 houses a sprocket 24 loosely fitted to the drive shaft 12, a front wheel drive sprocket 25, and a chain 26 wound around these sprockets 24, 25. A sprocket 27 fitted to the axle 18, a rear wheel drive sprocket (not shown), and a chain 28 wound around these sprockets are built in.

The drive shaft 12 is provided with a pawl clutch 13 that engages and disengages a cylindrical shaft 29 into which the sprocket 7 for driving the crawler is spline-fitted and a sprocket 24 for driving the auxiliary traveling wheels. The clutch 13 is biased by a spring 30 so as to engage with the cylindrical shaft 29, and when the axles 14, 14 are lowered and the front wheel transmission case 19 swings downward, the inside of the transmission case 19 A clutch lever 32 is pressed by a wedge piece 31 attached to the outer surface and engages with a sprocket 24 on the wheel side.

A cover 33 for storing the auxiliary running wheels 14, 14 is provided on the left and right sides of the machine body 2, and on the uncut side, the grass is divided to prevent uncut grain culms from getting caught in the cover 33 or the transmission cases 19, 23. A rod 34 is attached,
Moreover, the wheels 14, 14 on the already cut side are the paddy receiving stand 3 for bagging the paddy from the grain tank 35 that constitutes the paddy processing section.
It is arranged so that it can be stored before and after 6.

However, when performing reaping and harvesting work, wheel 1
4 and 14 are housed in the left and right covers 33 and 33, and the vehicle travels on the crawlers 10 and 10. When traveling on the road, the hydraulic cylinder 16 is actuated by operating a lever disposed near the driver's seat 37. Wheels 14, 14
lower. At this time, as the front wheel transmission case 19 swings downward, the engagement of the clutch 13 changes from the crawler drive sprocket 7 side to the wheel side sprocket 24, and the crawlers 10, 10 become inactive and automatically switch to wheel drive. Switch.

Here, the sprocket 24 on the drive shaft 12 side
The number of teeth is twice that of the sprocket 25 on the front axle 18 side, and the diameter of the axles 14, 14 is a little more than twice the effective diameter of the crawler drive sprocket 7, so that the wheels 14, 14 can easily move on the road. When traveling, it can run at more than four times the speed of crawler travel.

[Another Embodiment] Instead of the rear wheel transmission case 23, this may be used as a mere link to drive only the front wheels.

[Brief explanation of the drawing]

The drawings show an embodiment of the crawler-type reaping and harvesting machine according to the present invention, and FIG. 1 is a side view of a combine harvester;
Figure 2 is a plan view showing the elevating device for the auxiliary running wheels;
FIG. 3 is a sectional view of the main part, and FIG. 4 is a partial rear view. 2...Airframe, 4...Crawler traveling device, 10...
...Endless traveling band, 12... Drive shaft, 13...
Clutch, 14...Auxiliary traveling wheel, 15...Parallel quadruple link mechanism, 16...Elevating drive device, 17...
...The bottom surface of the endless strip on the ground side.

Claims (1)

[Scope of utility model registration request] The front and back of the aircraft body 2 is equipped with a pair of left and right crawler traveling devices 4, 4, and can be driven up and down freely over the top and bottom of the lower surface of the ground contact side of the crawler traveling devices 4, 4, and in the left and right direction of the crawler traveling devices 4, 4. Auxiliary traveling wheels 14, 14 are arranged outside of the crawler traveling devices 4, 4, and these auxiliary traveling wheels 14, 14 are connected via a pair of parallel quadruple link mechanisms 15 provided on both left and right sides of the crawler traveling devices 4, 4. The left and right parallel quadruple link mechanisms 15, 15 are linked to one elevating drive device 16 for elevating and lowering so as to be operated in synchronization with each other. Respective auxiliary running wheels 14, 14
A crawler traveling type reaping harvester, which is configured to be operatively connectable to a drive shaft 12 that is operatively connected to the crawler traveling devices 4, 4.