JP2549097Y2 - Three-turn dump truck hinge device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device for a three-wheeled dump truck.

[0002]

2. Description of the Related Art Conventionally, as a hinge device for a three-turn dump truck, as shown in Japanese Utility Model Laid-Open Publication No. 2-121344, support pins are provided at four locations on the front and rear sides of the bottom of a packing box. A stay is extended laterally from the sub-frame mounted on the stay, a support member for supporting the support pins is provided on the stay, and a hook for locking and securing the support pin is provided on the support member. A hinge is provided so as to be detachable, and the packing box can be tilted in three directions, that is, rearward and right and left sides by operating the hooks by a suitable hinge switching device.

[0003]

However, when the stay is extended from the subframe as in the prior art, the height of the hinge is equal to the height of the chassis plus the height of the subframe. As the height of the cargo box increases, the height of the packing box also inevitably increases, and there is a problem that it is difficult to unload the cargo.

Further, as disclosed in Japanese Utility Model Laid-Open Publication No. 63-109229, a stay is provided in the width direction of the chassis by inserting the chassis, and a support member and a hook are provided at a tip portion of the stay. However, since the stay is inserted through the chassis, the vehicle is a special vehicle that can be applied only to a three-wheeled dump truck, and cannot be applied to a vehicle such as a general dump truck, and has a problem of poor versatility.

[0005]

In the hinge device for a three-turn dump truck according to the present invention, support pins are provided at four places on the front and rear sides of the bottom of the packing box, and the support pins are supported at four places on the front and rear sides of the chassis. A support portion of the support member is provided, and a hook for locking and securing the support pin is provided on the support member so as to be freely disengageable to form a hinge, and each of the hooks is disengaged and operated by a hinge switching device. In a three-turn dump truck, the cargo box is configured to be tiltable to the rear and to the left and right sides,
Support portions and hooks of support members provided at four locations on both front and rear sides of the chassis are arranged below stays provided on the chassis below the upper surface of the chassis.

A stay provided with the front left and right support members and hooks is provided forward of the front end of the main girder of the packing box, and a stay provided with the rear left and right support members and hooks is provided behind the main girder of the packing box. It is provided behind the end.

[0007]

The hinges provided on both front and rear sides are disposed below the upper surface of the chassis to reduce the height of the packing box mounted on the chassis.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show a hinge device of a three-wheel dump truck according to the present invention.

Referring to FIG. 1, reference numeral 1 denotes a chassis, and the chassis 1 is formed such that a front end portion thereof is inclined lower than a rear end portion thereof.

A front stay 2 is provided at a front portion of the chassis 1 across the width of the chassis 1, and a rear stay 3 is provided at a rear end of the chassis 1 across the width of the chassis 1. Is provided.

As shown in FIG. 2, both ends of the front stay 2 are extended to the side of the chassis 1, and both ends of the front stay 2 are provided at both sides of the front of the bottom of the packing box 5. Is provided with a support member 21a for supporting the support pin 51a provided on the support member 21a.

A recess 22a for supporting the support pin 51a is formed in the support member 21a, and the position of the recess 22a is lower than the upper surface of the chassis 1. When the support pin 51a of the packing box 5 is supported by the concave portion 22a as a support portion of the support member 21a, a hook 23 for locking and securing the support pin 51a is provided in a detachable manner. These support pins 5
1a, the support member 21a, and the hook 23 constitute a front left and right hinge.

As shown in FIG. 3, the rear stay 3 is provided at the rear end of the chassis 1 with a bracket 11 at substantially the same height as the rear end of the chassis 1. The support members 21b that support the support pins 51b provided on both sides of the rear portion of the bottom of the packing box 5 are provided at both ends extending to the bottom.

The support pin 21b is provided on the support member 21b.
A concave portion 22b is formed as a supporting portion for supporting the support member 21a, and the position of the concave portion 22b is disposed at the same height as the concave portion 22a of the support member 21a. When the support pin 51b of the packing box 5 is supported by the recess 22b of the support member 21b, a hook 23 for locking and securing the support pin 51b is provided on the support member 21b so as to be freely detachable. The support pin 51b, the support member 21b, and the hook 23 constitute a rear left and right hinge.

The front stay 2 is disposed forward of a front end of a main girder 52 disposed at the bottom of the packing box 5, and the rear stay 3 is disposed at the bottom of the packing box 5. It is arranged behind the rear end of the main girder 52.

By configuring the hinge device as described above,
The hinges provided on both front and rear sides are disposed below the upper surface of the chassis 1, and the packing box 5 mounted on the chassis 1
Height can be reduced.

Each of the hooks 23 is connected with an appropriate hinge switching device for operating the hook 23 and the support pins 51a and 51b to engage and disengage with each other. , 51b is changed, and the dump cylinder provided between the packing box 5 and the chassis 1 is extended and contracted, whereby the packing box 5 can be tilted rearward and left and right in three directions.

In this embodiment, the present invention is applied to the undercarriage 1 formed by inclining the middle part so that the front end is lower than the rear end. However, the shape of the undercarriage is not limited to this. It can also be applied to a chassis formed in a shape. In this case, the same stay as the front stay 2 described above may be provided at the rear of the chassis.

FIG. 4 shows another embodiment of the front stay 2.

The front stay 2 is bent downward to the side of the undercarriage 1 and extends therefrom. A support member 21a having the same structure as that of the above-described embodiment is provided at the front end thereof.

[0022]

As described above, according to the present invention, the hinges provided on the front and rear sides are disposed below the upper surface of the chassis, and the height of the packing box mounted on the chassis is increased. The load can be reduced, and the unloading of the load can be performed easily.

The undercarriage can also be used as an undercarriage for vehicles such as general dump trucks, and the versatility can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a hinge device of a three-wheeled dump truck according to the present invention.

FIG. 2 is a front view showing a front stay and a peripheral portion thereof.

FIG. 3 is a front view showing a rear stay and a peripheral portion thereof.

FIG. 4 is a front view showing another embodiment of the front stay.

[Explanation of symbols]

 Reference Signs List 1 chassis 2 front stay 3 rear stay 5 packing boxes 21a, 22b support members 22a, 22b recesses (support portions) 23 hooks 51a, 51b support pins 52 main girder of packing box

Claims (2)

(57) [Scope of request for utility model registration] 1. A support pin is provided at four locations on the front and rear sides of the bottom of the packing box, and a support portion of a support member for supporting the support pins is provided at four locations on the front and rear sides of the undercarriage. A hook for locking and securing the support pin is provided so as to be freely detachable to form a hinge, and the packing box is configured to be tiltable rearward and left and right sides by operating each of the hooks by a hinge switching device. In the three-turn dump truck, the support members provided at four places on both front and rear sides of the undercarriage are provided.
The holding part and the hook are located below the upper surface of the chassis.
A hinge device for a three-wheeled dump truck, wherein the hinge device is disposed via a stay provided in the vehicle. Wherein with said front left and right support members and stay in which a hook is provided forward of the main girder front end of the packing box, the main said rear left and right support members and stays provided with hooks for packing boxes 2. The method according to claim 1 , wherein the rear end is provided behind the rear end of the girder.
The hinge device of the three-wheeled dump truck mounted .