JPS6117860Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to an improvement in the fanning structure of a dump truck that can be opened and closed relative to a loading platform.

(Prior Art) In a normal dump truck, cargo is unloaded by tilting the loading platform and opening one of the loading platforms.

Here, with a fan configured to open and close around a hinge provided on the lower edge of the fan with respect to the loading platform, when the loading platform is tilted and unloaded, the fan expands approximately 180 degrees from the upright closed position and is free from the loading platform. Rotate to open position for hanging.

(Problem to be solved by the invention) By the way, when the fan with the above-mentioned configuration is applied to an overturned dump truck in which the loading platform is tilted to the side, the side fan will be used to prevent an open dump truck hanging from the loading platform when the loading platform is tilted and unloaded. If this position is adopted, the cargo that falls from the edge of the platform to the ground will fall near the wheels, which may get in the way when the dump truck is emptied and leaves.

This idea was devised in view of the above points.When unloading cargo, the fan can be used as a chute by extending outward in parallel with the floor of the loading platform, and when loading the cargo, it can be completely suspended from the loading platform. To provide a tipping structure for a dump truck that can be lowered and not interfere with work.

(Means for solving the problem) The gist of this invention to achieve the above purpose is to raise and lower both ends of the platform edge from an upright position to a prone position approximately parallel to the platform floor. The lower end of the support is pivotally connected, the upper part of the support is detachable and the lower end of the support is pivotally connected, and a stopper is provided between the support and the loading platform to restrain the support in the upright position and the prone position. The structure of the dump truck is characterized by this.

(Example) Hereinafter, an example in which this invention is applied to an overturning dump truck will be described based on the drawings.

Figure 1 is a perspective view of the main parts of the loading platform of an overturned dump truck.
FIG. 2 is an explanatory diagram of the operation.

In the figure, 1 is a loading platform, 2 is a loading platform floor plate, 3 is a column located at both ends of the side edge of this floor plate 2 and has its lower end pivoted by a pivot 4, and 5 is a pin 6 that connects the lower end between both columns 3. A locking pawl 7 is provided on the top of the fan which can be freely engaged with and detached from the support 3, and this pawl 7 is operated by a handle 8 that protrudes to the outside of the fan. Ru.

Reference numeral 9 shows the entire raising and lowering means for the support columns 3, which consists of connecting small arms 10 projecting downward from each support support 3 and a small arm 12 fixed to a drive shaft 11 supported on the underside of the loading platform by a connecting rod 13, One end of the shaft 11 is made to protrude outside the loading platform 1 and a handle 14 is fixed thereto, and by operating this handle, the support column 3 is moved outward from the loading platform from the upright position to the prone position where it is approximately parallel to the loading platform floor. In the prone position, the small arm 10 contacts the stopper 15 and maintains that position.

In addition, 16 in the figure shows the small arm 1 when the support 3 is in the prone position.
The stopper 17 with which 2 abuts is a locking means with a key for restraining the handle 14 with respect to the loading platform 1 when the support column 3 is in the upright position in normal use.

(Function) This device is constructed as described above, and when it is necessary to release the fan 5 when loading onto the cargo platform 1, the locking pawl 7 and the support can be opened by operating the handle 8. 3 is released, only the fan 5 is pivoted approximately 180 degrees to open wide to the side of the loading platform, and is freely suspended below the loading platform 1.

When loading is completed, the fan 5 is returned to its original position and the locking claw 7 and the support 3 are relocked.

Next, when unloading at the destination, after releasing the restraint of the handle 14 on the loading platform 1 by the restraining means 17, the handle 14 is slowly rotated toward the side of the loading platform. In conjunction with this, the left and right columns 3, 3 and the fan 5 pivot as one unit, and a small arm 10 protruding below the column 1 approximately in parallel with the platform floor plate 2 comes into contact with the stopper 15. Once the position is maintained, when the loading platform 1 is tilted, the cargo will slide from the loading platform floor plate 2 to the side fan 5 and fall.

In this manner, after unloading, the handle 14 is operated again to return the pillar 3 and the side fan 5 to their original positions as one body, and the handle 14 is restrained by the restraining means 17.

Incidentally, in the above embodiment, an example of applying this invention to the side fanning of an overturned dump truck was shown, but it can of course be applied not only to the side fanning but also to the rear fanning of the dump truck. Although a configuration has been shown in which the integral raising and lowering operation of the fan 5 is performed by operating the handle of the raising and lowering means 9, the raising and lowering operation may be performed directly manually without using the raising and lowering means 9.

In this case, the stopper member provided on the pillar should be stopped by inserting a pin into the loading platform.
A suitable stopper shall be provided to restrain the column in the upright position.

FIG. 3 is a perspective view of essential parts of a loading platform showing another embodiment.

In this embodiment, the fan 1 is divided into two upper and lower stages.
8 and 19, the lower fan 19 has the fan structure of this invention, and the upper fan 18 has pivot points 20 on both sides of its upper edge. The lower end edge is pressed in from the outside, and opens simultaneously when the lower fan 19 is opened.

(Effects) As mentioned above, this idea provides struts on both sides of the tip of the dump truck, and when the locking relationship between the struts and the tip is released, the tip is suspended from the side edge of the loading platform in the same way as with conventional dump trucks. When the fan is opened to the maximum position, it does not interfere with loading cargo, and when the fan is locked to the support, the fan is held in a position approximately parallel to the floor of the loading platform by the integral pivoting of both parts relative to the loading platform. Because of this, when the loading platform is tilted and the cargo is unloaded, this fan acts as a chute, and the cargo that falls to the ground can be moved as far away from the wheels as possible, allowing the dump truck to leave when it is empty. This has the effect of significantly improving work efficiency without causing any problems.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of a loading platform in which this invention is applied to an overturning dump truck, FIG. 2 is an explanatory view of the operation, and FIG. 3 is a perspective view of essential parts of a loading platform showing another embodiment. 1... Loading platform, 2... Loading platform floor plate, 3... Support column, 4
... Pivot point, 5 ... Fanning, 6 ... Pin, 7 ... Locking claw, 8 ... Handle, 9 ... Raising means, 10 ...
Small arm, 11...Drive shaft, 12...Small arm, 13...Conn rod, 14...Handle, 1
5, 16...stopper, 17...restraint means.

Claims (1)

[Scope of utility model registration request] The lower end of a column that moves up and down from an upright position to a prone position approximately parallel to the platform floor is pivotally attached to both ends of the platform edge, and the upper part of the fan can be freely engaged and detached from the support, and the lower end of the fan can be pivoted to the support. A tipper structure for a dump truck, characterized in that a restraining means for restraining the prop in an upright position and a stopper for holding the prop in a prone position are provided between the prop and the loading platform.