JPS642836Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lubricating device for a box lifting mechanism in a dump truck, which allows the shaft support of the box pushing mechanism to be lubricated from a remote location.

Generally, in a dump truck, at least a lift arm, tension link,
A box lifting mechanism is provided which is composed of hydraulic cylinders, and the box is tilted by the operation of this box lifting mechanism.

By the way, when the box lifting mechanism is operated, the lift arm, tension link, and hydraulic cylinder each rotate relative to each other, resulting in significant wear.To prevent this wear, the shaft supports are periodically Greasing is being carried out.

In the conventional greasing method, the cargo box is first tilted to a predetermined angle by operating the cargo box lifting mechanism, and in this state, the operator enters between the cargo box and the vehicle body and directly greases the shaft support with a grease gun. There is.

However, if another worker accidentally activates the box lifting mechanism and lowers the box during the work, there is a risk of personal injury. The present invention solves the above problems, and embodiments of the present invention will be described below.

In FIG. 1, reference numeral 1 denotes a vehicle body consisting of a chassis frame 2 and a subframe 3.

A buffer support 4 is mounted on the subframe 3.

Reference numeral 5 denotes a cargo box mounted on the subframe 3 with a pivot 6 supported on the rear end of the subframe 3 so that the cargo box 5 can tilt backwards, and when the cargo box 5 is in a horizontal running position, the bottom surface of the main girder 7 of the cargo box 5 is is connected to the upper surface of the receiving tree 4.

Reference numeral 8 denotes a loading box pressing mechanism interposed between the front part of the subframe 3 and the front part of the loading box 5. This loading box pressing mechanism 8 includes a triangular lift arm 9 and a tension link 1.
0 and a hydraulic cylinder 11, one corner of the lift arm 9 is pivotally supported 12 on the subframe 3, one end of the tension link 10 is pivotally supported 13 on the other corner of the lift arm 9, and the other end is pivotally supported 12 on the subframe 3. It is pivoted 14 to the cargo box 5.

The hydraulic cylinder 11 has one end pivotally supported 15 on the remaining corner of the lift arm 9, and the other end pivotally supported on the cargo box 5, and the tension link 10 and the hydraulic cylinder 11 intersect when viewed from the side. installed on.

Next, the main part of the present invention will be explained. Reference numeral 17 denotes a notch part which is obtained by cutting out a part of the receiving tree 4 and dividing the receiving tree into front and back parts.

Greasing members 18, 1 such as Greenwich pulls are attached to the outer wall surface of the main girder 7 of the cargo box 5 at a position above the notch 17.
8' is fixed facing outward.

One of the greasing members 18 and 18' is connected to a greasing pipe 20 extending from a greasing portion 19 located on the shaft support 14 between the tension link 10 and the cargo box 5. and the other greasing pipe 1
8', a greasing pipe 22 extending from a greasing part 21 located at the shaft support 16 between the hydraulic cylinder 11 and the cargo box 5;
is connected.

Both the grease supply pipes 20 and 22 pass below the main girder 7 and are inserted through the notch 17 of the receiver 4.

In the embodiment, the vehicle body is composed of a chassis frame and a subframe, but the structure is not necessarily limited to this, and it is sufficient to have at least a chassis frame.

Further, the structure of the box lifting mechanism is not limited to the embodiment, and furthermore, the greasing position may be any shaft support of the box lifting mechanism and is not limited to the embodiment.

Since the present invention has the above-described configuration, when supplying grease to the shaft supports 14 and 16 of the cargo box lifting mechanism 8, the operator must hold the grease gun while the cargo box 5 is in the retracted position, that is, in the state shown by the solid line in FIG. Greasing member 18,1
When grease is injected into the shaft 8', the grease is supplied to the greasing portions 19, 21 of the respective shaft supports 14, 16 through the greasing pipes 20, 22.

As described above, the present invention provides a buffer support with a notch that divides the support into front and rear parts, a greasing member on the outer wall surface of the main girder of the cargo box, and a shaft support between the greasing member and the cargo box lifting mechanism. A greasing pipe inserted through the notch allows the greasing operation to be carried out with the cargo box stored, so unlike conventional methods, greasing can be performed with the cargo box tilted. There is no need for greasing, and greasing work can be carried out very safely.

In addition, since a notch is provided in the receiver, not only is it easier to process the notch, but the length of the receiver is also shorter.
Twisting during the manufacture of the receiver is reduced, and the upper surface of the receiver can be easily aligned with the lower surface of the cargo box.

Furthermore, since the greasing member is installed on the outer wall of the main girder of the cargo box that is raised and lowered, the greasing member is too high when the cargo box is raised, making it impossible to perform greasing work. Greasing is done while it is lowered onto the frame, which completely eliminates the need to enter the underside of the cargo box, making it extremely safe.

[Brief explanation of the drawing]

1 is a sectional view of the dump truck, FIG. 2 is an enlarged view of the main part, FIG. 3 is a sectional view taken along line AA in FIG. 2, and FIG. 4 is a sectional view taken along line BB in FIG. 2. 1 is the vehicle body, 4 is a buffer bracket, 5 is a cargo box, 7 is a main girder, 8 is a cargo box lifting mechanism, 17 is a notch, 18, 1
8' is a greasing member.

Claims (1)

[Scope of utility model registration request] In a dump truck, in which a cargo box is tiltably mounted on the vehicle body through a buffer support, and a cargo box lifting mechanism is interposed between the cargo box and the vehicle body, the outer side of the main girder of the cargo box is A greasing member is provided on the wall surface, and a notch is provided in a part of the buffer bracket to divide the buffer bracket into front and rear parts, and the greasing member is connected to the shaft support of the box lifting mechanism. A greasing device for a cargo box lifting mechanism in a dump truck, in which a pipe passes through the notch.