JPS5923628Y2 - Transport vehicle - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a transport vehicle equipped with a track running device, which facilitates loading and unloading of loads onto and from a loading platform, thereby making it possible to raise the loading platform.

Transport vehicles equipped with track running devices have been well known for some time, but conventional transport vehicles of this type have very low ground clearance of the vehicle body as well as the loading platform, and it is difficult to drive between the crop rows in the field. It could not be used for certain tasks.

In other words, when harvesting onions, etc., a transport vehicle loaded with containers follows an onion harvester, and the harvested onions are put into the container of the transport vehicle. Transport vehicles need a certain level of ground clearance in order to travel between the furrows, and if the loading platform is too low, the vertical distance between the chute of the onion harvester and the container will become large, causing damage to the onions. There are problems such as the onions cannot be reliably put into the container.

However, if the loading platform is raised higher, it becomes difficult to load and unload containers.

The present invention solves these conventional problems, and its features include a vehicle body, a pair of right and left track running devices that support the vehicle body, and a vehicle body that is positioned above the track running devices. In a transport vehicle equipped with a loading platform installed at the front side, the crawler running device is configured so that the upper surface side is inclined backwardly, and the crawler traveling device is configured such that the upper surface side is inclined backwardly, and the crawler travels on the front side of the loading platform so that the loading platform can be tilted backwardly. The apparatus is tiltably pivoted to the vehicle body by a horizontal shaft at a position above the approximately central portion in the longitudinal direction of the device, and a hydraulic cylinder for tilting the loading platform about the horizontal axis is provided between the loading platform and the vehicle body.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
In the figures and FIG. 2, reference numeral 1 denotes a vehicle body, which is supported by a pair of left and right track traveling devices 2.

The track traveling device 2 is composed of a running frame 3, a connecting member 4, a front sprocket 5, a rear sprocket 6, a driving sprocket 7, a crawler track 8, etc., and the driving sprocket 71 is disposed at the upper position of the front end, and the upper surface is in a backward-sloping shape. It is configured to be.

Note that the rear sprocket 6 is biased rearward via a tension mechanism 9.

10 is a driver's cab, and 11 is a driver's seat. Reference numeral 12 denotes an engine, which is operatively connected to the first sewing device 15 via a winding transmission mechanism 13, 14.

The first transmission device 15 can be operated to change speed as appropriate, and is interlocked with a drive shaft 16 that connects the left and right drive sprockets 7.

It goes without saying that the drive shaft 16 is equipped with a clutch, a brake, etc. for steering.

17 is the 21st mission device, which is mounted on the vertical frame 18 on the vehicle body 1.
The second transmission device 17 is equipped with a PTO shaft 19 which is connected to the winding transmission mechanism 13 and connected to the winding transmission mechanism 13. It is installed protrudingly.

Reference numeral 20 denotes a pair of mounting bases provided on the vehicle body 1 above the substantially central portion of the track traveling device 2 in the front-rear direction, which includes a loading platform 21 . Alternatively, as shown in FIGS. 3 and 4, each lower link 2 of the three-point link mechanism 22
3 is selectively and removably attached via the horizontal shaft 24.

The loading platform 21 is used for loading a container 25, for example, and the horizontal axis 24 is located near the front end of the loading platform 21, and the loading platform 21 is tiltable about the horizontal axis 24 so as to be able to tilt backwards and downwards.

26 is a stopper for fixing the container 25 to the loading platform 21.

Reference numeral 27 denotes a hydraulic cylinder, the main body of which is swingably supported on the vehicle body 1, and the tip of the piston rod 28 is attached to a mounting bracket 29 on the loading platform 21 side or the hydraulic arm 3.
0 (see Figures 3 and 4).

Therefore, if the piston rod 28 is connected to the mounting bracket 29, the loading platform can be tilted by the hydraulic cylinder 27.

Containers 25 on the loading platform 21 are placed at both left and right ends of the vertical frame 18.
A pair of bearing pedestals 31 are mounted which also serve to regulate the lateral position of the bearing holder 31, and a support shaft 32 is removably mounted horizontally on the bearing pedestals 31 as shown in FIGS. 3 and 4.

That is, as shown in FIG. 5, the bearing stand 31 has a holding member 35 that can be opened and closed by a pivot pin 33 and a lock pin 34, and is configured to hold and hold the support shaft 32 by the holding member 35. has been done.

The support shaft 32 has a pair of lift arms 36 at both ends and a hydraulic arm 30 at the middle, and the lift arm 36 is connected to the lower link 23 via a lift rod 37.
connected to.

The three-point link mechanism 22 includes a top link 38 in addition to the pair of lower links 23, and the top link 38 is connected to the vertical frame 18.
It is pivotally connected to a top link stand 39 which is detachably attached to the top link base 39.

Next, the action will be explained.

When accompaniing an onion harvester to store onions harvested in the container 25, the vehicle body 1 is moved as shown in FIGS. 1 and 2.
A loading platform 21 is pivotally mounted on the loading platform 21, and a container 25 is loaded onto the loading platform 21.

The ground clearance between the track traveling devices 2 is up to the connecting member 4 that connects the left and right traveling frames 3 to each other, and this connecting member 4 connects the upper parts of the traveling frames 3 to increase the ground clearance H. Set it high enough.

Furthermore, since the vehicle body 1 is located on the track traveling device 2, the positions of the vehicle body 1 and the loading platform 21 are sufficiently high, and together with the above-mentioned high ground clearance H, it is ideal for traveling between crops, etc. Moreover, since the container 25 is located higher, damage to the onions placed therein can be reduced.

When loading or unloading the container 25, the hydraulic cylinder 27 is extended and the loading platform 21 is tilted backwards around the horizontal axis 24 as shown by the imaginary line in FIG.
Since the horizontal shaft 24 is located at the front end of the loading platform 21 and the crawler track traveling device 2 has a top surface that is downwardly inclined, the rear portion of the loading platform 21 can be lowered sufficiently.

Normally, it is sufficient to lock the hydraulic circuit of the hydraulic cylinder 27 in a contracted state.

This transport vehicle can also be equipped with a working machine such as a rotary device. In that case, the piston rod 28 of the hydraulic cylinder 27 and the mounting bracket 29 must first be disconnected, and the horizontal shaft 24 must be removed. Remove the loading platform 21 from the top of the vehicle body 1.

Next, the support shaft 32 equipped with the lift arm 36, the hydraulic arm 30, etc. is horizontally suspended between the left and right bearing stands 31, the hydraulic cylinder 27 is slightly extended, and its piston rod 28 is connected to the hydraulic arm 30. On the other hand, the lower link 23 is pivotally attached to the mounting base 20 by the horizontal shaft 24, and the lower link 23 and the lift rod 37 are connected.

Further, a top link stand 38 is attached to the back of the vertical frame 18.

Now, as shown in FIGS. 3 and 4, a three-point linkage mechanism 22 can be installed in place of the loading platform 21, and therefore a working machine can be attached via this three-point linkage mechanism 22. In that case, By expanding and contracting the hydraulic cylinder 27, the working machine can be raised and lowered by rotating the lift arm 36 about the support shaft 32.

If a rotary device or the like requires power, it may be connected to the PTO shaft 19 via a universal joint shaft.

In addition, in the figure, the top link 38 is shown in the position when the work machine is attached.

As described in detail in the embodiments above, in the present invention, the crawler track traveling device is configured so that the upper surface side is inclined backwardly, and the crawler track runs on the front side of the cargo platform so that the cargo platform can tilt downward backwards. The device is tiltably pivoted to the vehicle body by a horizontal axis at a position above approximately the center in the longitudinal direction, and a hydraulic cylinder for tilting the loading platform around the horizontal axis is provided between the loading platform and the vehicle body. The rear part can be tilted and lowered by a large amount without being affected by the track traveling device, so loading and unloading of cargo is easy.

In addition, since the top side of the crawler traveling device is tilted in a zigzag shape, the loading platform can be tilted significantly as described above, making it easier to load and unload cargo.In other words, the loading platform can be set higher. Therefore, it is very effective as a transport vehicle that needs to travel between crops.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a vertical cross-sectional side view showing the state in which the cargo platform is installed, Fig. 2 is a plan view of the same, Fig. 3 is a side view showing the state in which the three-point link mechanism is installed, and Fig. 4 The figure is the same plan view,
FIG. 5 is an enlarged view of the main parts. 1...Vehicle body, 2...Crawler running device, 2
0... Mounting stand, 21... Loading platform, 22.
... Three-point link mechanism, 23 ... Lower link, 24 ... Horizontal shaft, 25 ... Container, 27 ... Hydraulic cylinder, 31 ...Bearing stand, 36...Lift arm.

Claims (1)

[Scope of utility model registration request] a vehicle body; a pair of left and right track running devices that support the vehicle body;
In a transport vehicle equipped with a loading platform provided on the vehicle body above the crawler traveling device, the crawler traveling device is configured such that the upper surface side thereof is tilted downward backward, and the loading platform is configured such that the loading platform can tilt downward backward. The front side of the loading platform is tiltably pivoted to the vehicle body by a horizontal axis at a position above the longitudinal center of the track traveling device, and a hydraulic cylinder for tilting the loading platform around the horizontal axis is connected between the loading platform and the vehicle body. A transport vehicle that is characterized by being provided in between.