JP3660329B2 - Manual dump device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a small-sized transport vehicle for transporting a relatively small amount of soil, gravel, or other loose material in an agricultural field or an accumulation field, and an invention related to a manual dump device that manually tilts the loading platform and discharges the load. It is.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, for a transport vehicle used in a field or the like, a manual dump device is known that can manually tilt a cargo bed and lower a load from the cargo bed. In the conventional manual dump device, the loading platform is pivotally supported at a fixed position of the vehicle body, and the loading platform is tilted around the pivoting position by lifting the portion of the loading platform on the side of unloading.
[0003]
[Problems to be solved by the invention]
In the above-mentioned conventional manual dumping device, since the loading platform is pivotally supported at a fixed position of the vehicle body, if the loading platform is pivoted near the unloading side, a large force is required to lift the unloading side of the loading platform. And Also, even if you try to pivotally support the position near the center of the loading platform, when the unloading side of the loading platform is lifted, the unloading side of the loading platform will collide with parts of the vehicle body such as wheels and crawlers There was an upper limit. Therefore, the conventional manual dump device has a drawback that the size of the loading platform, in other words, the amount of luggage to be loaded is limited to a small amount.
In view of the drawbacks of the prior art, the present invention seeks to provide a novel manual dump device that can tilt a larger carrier with a small force.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, one end of a support plate 7, 7 having a certain size is attached to a vehicle body shaft 6 that is pivotally supported on a part of the vehicle body 1, and the other end of the support plate 7, 7 is connected to the loading platform 3. A part is pivotally supported. Separately from this, one end of the operating lever 13 is pivotally supported on a part of the loading platform 3, and the operating lever 13 and the vehicle body shaft 6 are connected by connecting means such as a connecting rod. The vehicle body shaft 6 is pulled so that the support position of the loading platform 3 by the support plates 7 and 7 and the relative position in the unloading direction and the vertical direction of the vehicle body shaft 6 can be moved. Then, the shaft support position of the loading platform 3 is pushed up and moved in the unloading direction so that the portion on the unloading side of the loading platform 3 can be lifted to tilt the loading platform.
[0005]
As a specific structure, a vehicle body shaft 6 that is pivotally supported on a part of the vehicle body 1 and a carrier shaft 8 that is pivotally supported on a part of the cargo bed 3 are connected by support plates 7 and 7 having a certain size. One end of the first connecting rod 12 is connected to the mounted sleeve 11 and the other end of the first connecting rod 12 is connected to one end of the swing plate 9 pivotally supported on the unloading side of the loading platform 3. Then, an intermediate position of the operating lever 13 whose tip is pivotally supported by a part of the loading platform 3 on the unloading side and the other end of the swing plate 9 are connected to a second connecting rod 14 different from the first connecting rod 14. And the swinging plate 9 is rotated via the second connecting rod 14 by the turning operation of the operating lever 13, and the first connecting rod 12 is operated by the swinging plate 9 so that the vehicle body shaft 6 and the loading platform shaft are operated. and movable unloading direction and the vertical direction of the relative position between 8 to lift the operating lever 13 while being moved in the unloading direction with pushing up the pivotally supported position of the loading platform upward, the deck 3 around the body axis 6 Can be tilted in the unloading direction.
[0006]
By setting it as the said structure, the unloading side of a loading platform will be lifted in the state which pushed up the loading platform 3 and was moved to the unloading direction. Therefore, when the loading platform 3 is rotated about the vehicle body axis 6, the loading platform moves in the unloading direction, and therefore the distance X ₁ between the vehicle body shaft 6 and the center of gravity W of the loading platform 3 is reduced to X ₂ . . Therefore, the loading platform 3 can be tilted with a small force F, and the support position of the loading platform 3 by the loading platform shaft 6 is moved upward, so that the bottom surface portion of the loading platform 3 on the unloading side of the vehicle body 1 is on the unloading side of the vehicle body 1. It is possible to incline in the unloading direction without hitting the tip portion, the wheel or the crawler device 2. In other words, the loading platform 3 can be rotated with a small force F, and the support position of the loading platform 3 is also moved upward, so that the loading platform 3 is supported as close to the center of the loading platform as possible as long as it does not hit the crawler. It is possible to make it.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a manual dumping device according to the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view showing an example of a crawler-type small transport vehicle, FIG. 2 is a plan view of only a cargo bed and a dump device, and FIG. 3 is a side view of only a cargo bed and a dump device.
[0008]
In the transport vehicle shown in FIG. 1, a loading platform 3 is disposed at the front portion of a vehicle body 1 provided with a crawler device 2, and a driving device unit 4 is disposed at the rear of the vehicle body. By operating the operation unit 5, forward and backward operations and other driving operations are performed. That is, the loading platform 3 is positioned in front of the drive operation unit 4, and the loading platform 3 is pivotally supported by a part of the vehicle body 1 so as to be manually tilted forward as shown by a two-dot chain line in FIG. Can be taken down.
[0009]
The present invention does not directly support the loading platform on a part of the vehicle body, but supports the vehicle body shaft 6 on the vehicle body 1 as shown in FIG. 2 and FIG. While fixing one end of the support plates 7 and 7, the loading platform shaft 8 is fixed to the other end of the supporting plates 7 and 7, and the loading platform shaft 8 is pivotally supported on a part of the loading platform 3. The loading platform shaft 8 is pivotally supported on the unloading side (near the loading platform) slightly from the center of the loading platform 3. Therefore, the loading platform 3 can basically be rotated about the vehicle body axis 6.
[0010]
On the bottom surface of the loading platform 3 on the unloading side (rear side), a triangular apex portion of a substantially triangular rocking plate 9 is pivotally mounted by a shaft 10 so as to be rotatable in a plane, and a sleeve 11 is mounted on the vehicle body shaft 6. One end of the first connecting rod 12 is fixed to the sleeve 11, and the other end of the first connecting rod 12 is pivotally attached to one end of the substantially triangular rocking plate 9. The tip of the operating lever 13 is pivotally attached to the bottom surface of the loading platform 3 by a shaft 15 at a position away from the swing plate 9, and one end of the second connecting rod 14 is axially attached to the intermediate position of the operating lever 13, and the second connecting The other end of the flange 14 is pivotally attached to the other end of the swing plate 9.
[0011]
With this configuration, when the operating lever 13 is rotated to the position indicated by the dotted line in the direction indicated by the arrow in FIG. 2, the second connecting rod 14 is pulled in the direction indicated by the arrow, and the swing plate 9 is moved in the direction indicated by the arrow (in the drawing). To the right). The first connecting rod 12 is pulled in the direction of the arrow by the rotation of the swing plate 9, and the vehicle body shaft 6 is pulled toward the loading platform shaft 8 as shown by the dotted line in FIG. At this time, since the vehicle body shaft 6 is pivotally attached to the vehicle body 1, the entire cargo bed 3 is actually attracted to the vehicle body shaft 6.
[0012]
Next, the operation procedure of the manual dump device will be described with reference to FIGS. FIG. 4 is a side view of the state of transportation. The loading shaft 8 is located at a position of a dimension L ₁ and a height H ₁ with respect to the vehicle body shaft 6 in the direction of unloading. If the loading platform 3 is tilted in the discharge direction in this state, the loading platform that rotates about the vehicle body shaft 6 hits the tip of the crawler device 2 and cannot be tilted greatly.
[0013]
In order to incline the loading platform 3, first, the operation lever 13 is pulled outward as shown by a dotted line in FIG. Then, as shown in FIG. 5, as a result of the vehicle body shaft 6 being pulled by the first connecting rod 12, the loading platform 3 moves in the unloading direction (forward), and the support plate 7 rotates upward about the vehicle body shaft 6. Then, the loading platform shaft 8 supporting the loading platform 3 is pushed upward. At this time, as shown in FIG. 5, the loading platform shaft 8 is in the dimension L ₂ toward the unloading direction with respect to the vehicle body shaft 6, and the loading platform shaft 8 is at a position H ₂ above the vehicle body shaft 6. That is, the loading platform shaft 8 is in the unloading direction by a dimension L ₂ from the vehicle body shaft 6, which is smaller than the original dimension L ₁ shown in FIG. 4, and the upper dimension H ₂ of the loading platform shaft 8 from the vehicle body shaft 6 is It becomes larger than the original upper dimension H ₁ of FIG. 4.
[0014]
With the operating lever 13 in the state shown in FIG. 5, the bed around Lifting the counter-unloading side of the loading platform 3, as shown in FIG. 6, the vehicle body axis 6 without the bottom surface of the loading platform 3 hits the crawler device 2 3 only tilt in unloading direction, it is possible to discharge the cargo. Assuming that the loading platform is tilted without being pushed upward by the operating lever and not moved in the unloading direction, the entire loading platform is translated in the anti-unloading direction and the downward direction in the state shown in FIG. it is clear that the bottom surface of the loading platform 3 will hit the crawler device 2.
[0015]
In other words, by operating the operating lever, the support position of the loading platform by the support plate 7 is raised to a high position, and in this state, the loading platform 3 is rotated about the vehicle body axis 6. Even if the vehicle body shaft 6 is moved from the end of the unloading side of the vehicle body 1 in the center direction as much as possible, the rotating loading platform 3 becomes a part of the vehicle body 1 or the crawler device 2. It is possible to avoid hitting. At the same time, the distance X ₁ between the vehicle body shaft 6 that is a fulcrum for rotating the loading platform 3 in the unloading direction by the operation of the operation lever 13 and the center of gravity W of the loading platform including the loading approaches the original distance X ₂ , and the loading platform is tilted. The rotational moment required for this is reduced. As a result, the bed can be tilted with a small force F.
[0016]
In the illustrated embodiment that although the format truck of a crawler type push toward the loading platform 3 in front, that the present invention method i.e. the entire pull the deck 3 forward and rearward of the reverse, crawler Instead, it may be a wheeled vehicle, or a powered vehicle instead of a power vehicle. Furthermore, a system in which the cargo is lowered by being tilted in the lateral direction with respect to the traveling direction may be used. In the illustrated embodiment, the operation lever 13 for pushing the loading platform 3 upward and moving it in the unloading direction also serves as a lever for tilting the loading platform, but the loading platform 3 is pushed upward and in the unloading direction. The operation lever for moving and the lever for lifting and tilting the loading platform may be different.
Although not shown in the drawings, the loading platform 3 is moved in the direction of unloading by operating the operation lever. , Roller can be placed.
[0017]
【The invention's effect】
According to the manual dumping device of the first aspect of the present invention, in the manual dumping type transport vehicle, the loading platform 3 can be moved in the unloading direction and the vertical direction by the operation lever. Since the moving loading platform can be tilted as much as possible in the unloading direction, it is possible to prevent part of the bottom surface of the loading platform from hitting the vehicle body, the crawler device, the wheels, and the like when unloading. Further, by moving the loading platform in the direction of unloading with the operation lever, it is possible to bring the vehicle body axis that is the center of rotation of the loading platform closer to the center of gravity of the loading platform, and to tilt the loading platform with a small force.
[0018]
According to the invention of the second aspect, the invention of the first aspect can be implemented with a simple structure.
[Brief description of the drawings]
FIG. 1 is a side view showing an example of a crawler type small transport vehicle that implements the present invention;
FIG. 2 is a plan view of only the loading platform and the dump device of the crawler type small transport vehicle of FIG. 1,
3 is a side view of only the loading platform and the dump device of the crawler type small transport vehicle of FIG. 1,
FIG. 4 is a side view of a loading platform and a dump device in use for transportation before tilting;
FIG. 5 is a side view of the loading platform and the dump device with the loading platform moved in the unloading direction;
FIG. 6 is a side view of the loading platform and the dump device in an unloaded state with the loading platform tilted.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Car body, 2 ... Crawler apparatus, 3 ... Cargo bed, 4 ... Drive apparatus part, 5 ... Operation part, 6 ... Car body axis, 7 ... Support plate, 8 ... Cargo bed axis, 9 ... Swing board, 10 ... Shaft, 11 ... sleeve, 12 ... first connecting rod, 13 ... operating lever, 14 ... second connecting rod, 15 ... shaft.

Claims (2)

Attach one end of a support plate of a certain size to a vehicle body shaft that is pivotally supported on a part of the vehicle body, and pivotally support the other end of the support plate on a part of the loading platform.
An operation lever having one end pivotally supported on a part of the loading platform and the vehicle body shaft are coupled by a coupling means such as a coupling rod, and the vehicle body shaft is pulled by a rotation operation of the operation lever to support the loading platform and the vehicle body by the support plate. The relative position to the shaft can be moved in the unloading direction and up and down direction,
It is characterized by the fact that the loading position of the loading platform can be tilted in the direction of unloading around the body axis by lifting the unloading side of the loading platform while pushing up the support position of the loading platform and moving it in the unloading direction. Manual dump device. The vehicle body shaft that is pivotally supported on a part of the vehicle body and the carrier shaft that is pivotally supported on a part of the cargo bed are connected by a support plate having a certain size.
While connecting one end of the first connecting rod to the sleeve mounted on the vehicle body shaft and the other end of the first connecting rod to one end of the swing plate pivotally supported by a part of the unloading side of the loading platform,
Connect the intermediate position of the operating lever pivotally supported on the part of the unloading side of the loading platform with the other end of the swing plate with a second connecting rod,
By rotating the operation lever, the swing plate is rotated through the second connecting rod, and the first connecting rod is operated by the swing plate, so that the relative position between the vehicle body axis and the loading platform shaft is lowered in the unloading direction and up and down. Move in the direction,
A manual dump device characterized in that the support lever can be tilted in the unloading direction about the vehicle body axis by lifting the operating lever while pushing the pivot support position of the loading platform upward and moving it in the unloading direction .

Images