JPH11301336A - Load-carrying platform of dump truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a load-carrying platform of a dump truck, in which loading to the front end of the load-carrying platform of the dump truck can be easily and reliably performed. SOLUTION: In the load-carrying platform 1 of a dump truck, a front cover 8 inclined and extended forward and diagonally up and a limit position indicating means 10 provided near the upper part of an inner wall 4 of a front panel 2 or behind the vicinity of the upper part and for indicating the front limit of the loading position are provided on the upper end of the front panel 2 on the front end. In the limit position indicating means 10, the position and the width size of the upper end in the height direction are equal to those of the upper end of the front cover 8. The limit position indicating means 10 may be formed into a portal shape or may be formed of a plate-shaped member 11 having holes, cutouts or clearances 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier for a dump truck or the like (hereinafter referred to as a dump vehicle).

[0002]

2. Description of the Related Art FIGS. 12 and 13 show side views of a bed portion of a conventional dump truck. In FIG. 1, in a dump truck carrier 1, a front panel 2 located at a front end is provided.
Is extended upward (see FIG. 12), or the upper part of the front panel 2 is extended so as to protrude forward (see FIG. 13). In order not to spill on the side, and to prevent earth and sand from falling onto the upper part of the cab 3 when loading earth and sand.

[0003] When the loading bed such as a hydraulic shovel or the like is fully loaded with earth and sand on the loading bed 1, usually, the loading machine operator aims at the inner wall surface 4 of the front panel 2 when loading the loading bed on the frontmost portion of the loading bed. To remove earth and sand. At this time, the operator operates the work equipment such as the bucket 5 so that the earth and sand discharge completion position of the bucket 5 of the loading machine is on the upper extension of the inner wall surface 4 of the front panel 2.

[0004]

However, according to the structure of the conventional carrier 1 as described above, when the operator intends to extend the inner wall 4 of the front panel 2 upward, the operator aims at the inner wall 4 as a target. Since the position of 4 is difficult to understand, as shown in FIGS. 14 and 15, the work is often performed with the position of the upper end 6 of the front panel 2 as the target. During the loading operation, the operator attempts to perform the operation efficiently, so that the operator often roughly performs the positioning operation of the working machine, and the above-described target position (upper end portion 6).
The case where the bucket 5 is over. At this time, the earth and sand discharged from the bucket 5 spills forward from the upper end 6 of the front panel 2 and falls to the upper part of the cab 3. As a result, problems such as a decrease in the safety of the cab 3 or severe damage to the vehicle body such as the cab 3 occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a dump truck carrier that can easily and reliably load the frontmost end of the dump truck carrier. It is an object.

[0006]

Means for Solving the Problems, Functions and Effects In order to achieve the above-mentioned object, the invention according to claim 1 is directed to a loading platform 1 of a dump vehicle, which is provided at an upper end of a front panel 2 at a frontmost end of the loading platform. A front cover 8 extending obliquely forward and obliquely upward, and provided substantially in the vicinity of or above the inner wall surface 4 of the front panel 2 and in front of the loading position at the time of loading. And a limit position display means 10 for indicating a limit.

According to the first aspect of the present invention, a front cover is provided at the upper end of the front panel of the foremost wall of the cargo bed, the front cover extending obliquely upward and forward, and substantially above the inner wall surface of the front panel. A limit position display means for indicating a forward limit of the loading position is provided behind or near the upper portion. Therefore, the operator of the loader can easily know the position of the inner wall surface of the front panel by the limit position display means, so that the load can be loaded near the inner wall surface of the front panel. Therefore, the discharge of the load to the front of the front panel is reduced,
Further, when the limit position display means is provided behind the upper part of the inner wall surface of the front panel, this possibility is reduced, and the reliability of the discharge into the cargo bed is increased. Also, at this time, even if the load is discharged in front of the limit position display means, it falls on the upper surface of the front cover which is provided in an inclined manner while descending toward the carrier in front of the limit position display means. The vehicle body such as the driver's cab is prevented from being damaged by earth and sand. Therefore, the efficiency of the loading operation and the durability of the vehicle body are improved.

According to a second aspect of the present invention, there is provided the dump truck carrier according to the first aspect, wherein the limit position display means is provided.
Has a configuration in which the position and the width of the upper end in the height direction are substantially equal to the position and the width of the upper end of the front cover 8, respectively.

According to the second aspect of the present invention, when an operation of loading earth and sand or the like with the loading machine from the rear portion of the dump vehicle is performed (generally, the loading operation from the rear portion is often performed), When the operator of the loader looks at the limit position display means, since the outer shape of the limit position display means is so large as to hide the outer shape of the front cover, the operator cannot see the upper end of the front cover. Therefore, the upper end of the front cover is not erroneously set to the target position, and the limit position display means is used as a guide as the target position of the frontmost end of the carrier. by this,
Since it is possible to reliably load the cargo on the front end of the loading platform, in addition to the effect of the first aspect, the efficiency of the loading operation and the durability of the vehicle body are further improved.

[0010] The invention described in claim 3 is the invention according to claim 1 or 2.
In the dump truck carrier described above, the limit position display means 10 includes support members 22, 22 provided at left and right ends with respect to the traveling direction, and a horizontal member 21 connecting between upper portions of the support members 22, 22. And a gate-shaped configuration.

According to the third aspect of the invention, the limit position display means is formed in a gate shape, and the horizontal member between the left and right support members of the gate shape can indicate the front limit of the loading position. Thus, since the limit position display means is manufactured with a simple configuration, the limit position display means can be easily attached to the carrier.

[0012] The invention according to claim 4 is the invention according to claim 1 or 2.
In the cargo bed of the dump vehicle described above, the limit position display means 10 is formed of a plate-like member 11 having a surface provided substantially parallel to the vertical direction.

According to the fourth aspect of the present invention, the limit position display means is formed by a plate-like member having a surface (a flat surface or a curved surface) provided substantially parallel to the vertical direction. Thus, since the limit position display means is manufactured with a simple configuration, the limit position display means can be easily attached to the carrier.

According to a fifth aspect of the present invention, in the dump truck of the fourth aspect, the plate-like member 11 is located forward of the plate-like member 11 and the front cover 8.
So that the load falling on the inclined surface of
It is configured to have at least one hole 14 or notch 15 penetrating from the front cover 8 side to the cargo bed 1 side.

According to the fifth aspect of the present invention, the plate-like member of the limit position display means is on the front cover side (front).
Since there is at least one hole or notch penetrating from the front to the loading side (rear), even if the bucket or the like of the loader is positioned forward beyond the limit position display means, The load (e.g., earth and sand) discharged from the bucket falls on the inclined surface of the front cover, and slides down or rolls down along the inclined surface, passes through the hole or the notch, and passes through the inside of the carrier. To fall. Therefore, the load is less likely to remain on the front cover,
In addition, it is easy to remove a part that remains and drop it into the carrier. As a result, the workability during the loading operation is improved.

According to a sixth aspect of the present invention, in the dump truck of the fourth aspect, the plate-like member 11 is located forward of the plate-like member 11 and the front cover 8.
So that the load falling on the inclined surface of
A predetermined gap 13 is provided between the lower end of the plate-shaped member 11 and the upper end of the front panel 2.

According to the sixth aspect of the present invention, the plate-like member of the limit position display means is attached so as to have a predetermined gap between a lower end of the plate-like member and an upper end of the front panel. Therefore, even if the bucket is positioned forward beyond the limit position indicating means, the load discharged from the bucket falls on the inclined surface of the front cover, and along the inclined surface. And falls into the carrier via the gap. Therefore, it is difficult for the load to remain on the front cover, and it is easy to remove a part of the load and drop the load into the carrier. As a result, the workability during the loading operation is improved.

According to a seventh aspect of the present invention, in the dump truck of any one of the first to sixth aspects, the limit position display means 10 is attached to the front panel 2.

According to the seventh aspect of the present invention, the limit position indicating means is attached to the front panel. However, since the front panel is usually constructed to have a strength which can withstand the impact when loading earth and sand, etc. For example, it can be firmly attached by welding or the like. Therefore, the service life of the limit position display means can be prolonged, and maintenance work is reduced.

According to an eighth aspect of the present invention, in the dump truck of any one of the first to sixth aspects, the limit position display means 10 is attached to the front cover 8.

According to the eighth aspect of the present invention, since it is attached to the front cover, the load such as earth and sand is less likely to fall directly on the front cover, and the frequency of damage to the front cover is reduced. In addition, the front cover and the limit position display means can be integrally mounted on the front panel, for example, so that the front cover and the limit position display means can be easily attached to and detached from the front panel.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a carrier of a dump truck according to the present invention. Here, a case where the present invention is applied to a crawler type dump truck as an example of a dump vehicle will be described.

First, a first embodiment will be described with reference to FIGS. FIG. 1 is a perspective view of a crawler type dump truck, and FIG. 2 is a side view of a front end panel (that is, a front panel) of a bed of the crawler type dump truck. In the figure, a bed 1 is tiltably attached to a rear part of a vehicle body 9 having at least one pair of right and left (here, one pair) crawler devices 7, and the bed 1 is mounted by a dump cylinder (not shown). It is tilted to discharge the load. The cab 3 is mounted in front of the loading platform 1 and above the vehicle body 9. Of the panels forming the front and rear and left and right wall surfaces of the loading platform 1, the upper part of the front panel 2 forming the front end wall surface protrudes upward from the upper end parts of the other three panels. Then, the vertical direction of the upper end of the front panel 2 (that is, the height direction)
Is substantially equal to the position of the ceiling of the cab 3. Further, a driver's cab 3 is provided at the upper end of the front panel 2.
The front cover 8 which extends over the head of the vehicle is extended obliquely upward and forward, and the front cover 8 is formed to be substantially equal to the width of the vehicle body.

Above the front panel 2 and behind the front end of the front cover 8, limit position display means 10 having a front limit member 10a indicating a front limit of a loading position at the time of loading is provided. Installed. In the present embodiment, the limit position display means 10 is provided with the front limit member 1.
0a, a plate-like member 11 provided substantially parallel to the vertical direction, a lower end side is attached to an upper part of the front panel 2, and an upper end side is attached to a lower part of the plate-like member 11 to support the same. And a supporting member 12. Then, the support member 1 is moved so that a predetermined gap 13 is opened between the lower end of the plate member 11 and the upper end of the front panel 2.
2 are provided.

The plate member 11 is mounted such that the rear end surface of the plate member 11 is located substantially above the inner wall surface 4 of the front panel 2.
The upper end of 1 indicates the position of the inner wall surface 4 of the front panel 2. The vertical position of the upper end of the plate-shaped member 11 is configured to be substantially equal to the vertical position of the upper end (that is, the front end) of the front cover 8, and the width of the plate-shaped member 11 is equal to the front. The width is substantially equal to the width of the cover 8.

The operation of the above configuration will be described with reference to FIGS. The operator of the loader operates the upper end of the limit position display means 10, that is, the plate-like member 1 in this embodiment.
The bucket 5 is operated with the upper end of the bucket 1 as a target position, and the load is discharged from the bucket 5 at that position. At this time,
The discharged load just falls down near the inner wall surface 4 of the front panel 2 as shown in FIG. If bucket 5
When the discharge position from the vehicle is shifted forward from the limit position display means 10 as shown in FIG. 4, the load falls on the upper surface of the front cover 8, but the front cover 8 is
, So that the dropped load slides down along the inclined surface of the front cover 8,
It falls into the carrier 1 via the gap 13 between the plate member 11 and the front panel 2.

As described above, when a load such as earth and sand is loaded into the front end of the loading platform 1 by the loading machine, the upper end of the front limit member 10a (here, the plate-like member 11) of the limit position display means 10 is used. Since the position of the inner wall surface 4 of the front panel 2 can be easily and reliably confirmed, it is easy to operate the bucket 5 of the loading machine with the upper end of the plate-like member 11 as a target position and to accurately position the bucket. Therefore, the front panel 2
It is possible to discharge the load into the carrier 1 without exceeding the load. In addition, even if the load falls forward, the load dropped on the inclined surface of the front cover 8 passes through the gap 13 and falls into the inside of the carrier 1.
The maintenance work of the dump vehicle is reduced without damaging the vehicle. Also, even if the load falls on the upper surface (the inclined surface) of the front cover 8, the load rarely remains. Even if the load drops, the load can be easily dropped from the gap 13 to the loading platform 1 side. The workability at the time is improved, and the load such as the remaining earth and sand is not scattered during traveling.

When the loading operation is performed by the loading machine, the loading platform 1
Often loaded from behind. At this time, when looking forward from the operator of the loading machine, since the outer dimensions of the limit position display means 10 are substantially the same as the outer dimensions of the front cover 8, the position of the front cover 8 is changed to the limit position display means 1.
It is hidden by 0 and cannot be seen. Accordingly, the operator of the loading machine can easily operate the bucket 5 by aiming at the limit position display means 10 more than the front cover 8, so that there is no erroneous operation of aiming at the upper end of the front cover 8 and the work machine Operability is improved, and loading work can be performed efficiently.

Further, the plate-like member 11 is mounted on the upper part of the front panel 2, and since the front panel 2 is usually very strong, the plate-like member 11 can also be firmly mounted.

In the embodiment, the front limit member 10a
(That is, the plate-like member 11 is attached here so that the rear end surface is located substantially above the inner wall surface 4 of the front panel 2. However, the present invention is not limited to this attachment position, and the front panel is not limited to this attachment position. The position of the inner wall surface 4 of the front panel 2 may be confirmed and the position may be located behind the front end of the front cover 8. It may be backward. Further, here, the loading platform 1 in which the upper part of the front panel 2 protrudes above the upper end of the other panel is shown, but the present invention is not limited to this, and the height of each panel of the loading platform 1 is equal. There may be. Further, an example in which the width of the front cover 8 is provided substantially equal to the width of the vehicle body is shown, but the width of the front cover 8 is not limited to this. What is necessary is just to cover goods and the like.

Hereinafter, the limit position display means 1 according to the present invention will be described.
Another embodiment will be described. 5 and 6 show a second embodiment. FIG. 5 is a perspective view of a front panel portion according to the present embodiment, and FIG. 6 is a side view thereof. In the following, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted. Above the front panel 2 and behind the front cover 8, a plate-like member 11 of the limit position display means 10 is attached as the front limit member 10a substantially in parallel with the vertical direction. This plate-shaped member 11 has a height and a width substantially equal to the outer dimensions of the front cover 8 as in the previous embodiment, and has a hole 14 penetrating from the front cover 8 side to the cargo bed 1 side. It has a predetermined number. The lower end of the hole 14
Front cover 8 inclined while lowering toward loading platform 1
The height of the hole 14 in the vertical direction is large enough to allow a load such as earth and sand to sufficiently pass therethrough. Here, three holes 14
Is shown, but the present invention is not limited to this, and it is sufficient that at least one or more be provided.

With the above construction, the loading operation can be performed with the upper end of the plate-shaped member 11 of the limit position display means 10 as the target position. 1 (that is, near the inner wall surface 4 of the front panel 2), and the loading operation can be performed efficiently. Also, if the limit position display means 10
When the load is released with a little over, the discharged load falls onto the front cover 8, passes through the hole 14, and easily falls into the carrier 1.
And the like, and the work of removing the residue of the load on the upper surface of the front cover 8 becomes easy. Furthermore, since it has a simple structure in which the hole 14 is opened in the plate-shaped member 11, it can be easily configured.

Next, a third embodiment will be described with reference to FIGS. 7 and 8 respectively show a perspective view and a side view of a front panel unit according to the present embodiment. In the following, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted. The front limit member 10a of the limit position display means 10 in the present embodiment
The plate-like member 11 is provided with a predetermined number (here,
3) of the notches 15.
The lower portions of the left and right plate-like members 11 of the cutout portion 15 are attached to the upper portion of the front panel 2 so that the upper side of the front cover 8 is positioned above the upper surface of the front cover 8 (that is, the inclined surface). Thereby, the upper part of the notch 15 penetrates the front cover 8 side and the carrier 1 side. A reinforcing member 16 is attached between the plate-like member 11 and the front cover 8 for reinforcement.

According to the present embodiment, the position of the inner wall surface 4 of the front panel 2 of the carrier 1 can be easily confirmed by the limit position display means 10 as in the previous embodiments. Even if the loading position slightly exceeds the position of the limit position display means 10, the inclined front cover 8 can prevent the driver's cab 3 from being damaged, and can remove the residue above the front cover 8. Removal work becomes easy.

Next, a fourth embodiment will be described with reference to FIGS. 9 and 10 show a perspective view and a side view of the front panel unit according to the present embodiment, respectively. Here, also, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted. The front limit member 1 of the limit position display means 10 in the present embodiment
The plate-like member 11 as 0a is attached to the front cover 8 by a support member so as to be substantially parallel to the vertical direction, and the rear end surface 11a of the plate-like member 11 is located substantially above the inner wall surface 4 of the front panel 2. I have. The width is set so as to open a gap 13 having a predetermined size between the front surface of the plate member 11 and the upper surface of the front cover 8 and between the lower end portion of the plate member 11 and the upper end portion of the front panel 2. It is attached by the support member 17 at predetermined intervals in the direction. The upper and lower positions (that is, the height direction) of the upper end of the plate-like member 11 are substantially the same as the upper end of the front cover 8, and the widths thereof are also substantially equal.

In this embodiment, as in the operation of the above-described embodiments, the loading platform 1 is displayed by the limit position display means 10.
Is easy and reliable. Also,
Since the plate-like member 11 of the limit position display means 10 is located behind the upper part (that is, the front part) of the front cover 8, if the loading position of the load at the time of loading is forward of the limit position display means 10. Even in the case where the driver's cab is over, the front cover 8 prevents the cab 3 from being damaged. Further, since the gap 13 is provided, it is easy to remove the residue of the load on the front cover 8.

FIG. 11 shows a fifth embodiment, and is a perspective view of a front panel portion. Here, also, the same components as those in the previous embodiment are denoted by the same reference numerals, and description thereof is omitted. Referring to FIG.
Are formed in a gate shape, and support members 22, 22 provided at the left and right ends along the up-down direction with respect to the traveling direction, and a horizontal member 21 connecting upper portions of the left and right support members 22, 22. Have. This horizontal member 21 represents the front limit of the loading position as the front limit member 10a,
It is mounted so as to be located substantially above the inner wall surface 4 of the front panel 2. The height position and the width of the upper end of the gate-shaped outer shape are substantially equal to the height position and the width of the upper end of the front cover 8, respectively. The support members 22, 22 and the horizontal member 21
May be configured as one body.

According to the above configuration, the position of the inner wall surface 4 of the front panel 2 can be easily confirmed by the horizontal member 21 of the limit position display means 10 as in the above embodiments.
In addition, when the loading operation is performed from the back of the carrier 1, the gate-shaped outer shape hides the outer shape of the front cover 8, so that the limit position display means 10 can be easily set to the intended position. Further, the limit position display means 10 can be configured with a very simple structure.

In the above embodiment, an example is shown in which the plate-like member 11 is formed of a flat plate. However, the present invention is not limited to this. For example, the plate-like member 11 may be formed of a curved plate. Good. In this case, the upper end of the curved plate may be located substantially above or near the upper side of the inner wall surface 4 of the front panel 2. A notch 15 or a gap 13 may be provided.

[Brief description of the drawings]

FIG. 1 shows a dump vehicle 1 according to a first embodiment of the present invention.
It is a perspective view of an example crawler type dump truck.

FIG. 2 is a side view of a front panel portion of the carrier according to the first embodiment.

FIG. 3 is a diagram illustrating the operation of the present invention.

FIG. 4 is a diagram illustrating the operation of the present invention.

FIG. 5 is a perspective view of a front panel unit according to a second embodiment.

FIG. 6 is a side view of a front panel unit according to a second embodiment.

FIG. 7 is a perspective view of a front panel unit according to a third embodiment.

FIG. 8 is a side view of a front panel unit according to a third embodiment.

FIG. 9 is a perspective view of a front panel unit according to a fourth embodiment.

FIG. 10 is a side view of a front panel unit according to a fourth embodiment.

FIG. 11 is a perspective view of a front panel portion according to a fifth embodiment.

FIG. 12 is a side view of a front panel portion of a carrier according to the related art.

FIG. 13 is a side view of another example of a front panel portion of a cargo bed according to the related art.

FIG. 14 is an explanatory diagram of a target position at the time of loading according to the related art.

FIG. 15 is an explanatory diagram of a target position at the time of loading according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carrier 2 Front panel 3 Operator's cab 4 Inner wall surface 5 Bucket 8 Front cover 9 Car body 10 Limit position display means 11 Plate member 12 Support member 13 Gap 14 Hole 15 Notch 16 Reinforcement member 17 Support member 21 Horizontal member 22 Column member

Claims (8)

[Claims] A front cover (8), which is provided at the upper end of a front panel (2) at the foremost end of a dump truck and inclined forward and obliquely upward.
And limit position display means (10) which is provided substantially near or above the inner wall surface (4) of the front panel (2) and indicates the front limit of the loading position at the time of loading. A loading platform for a dump vehicle, comprising: 2. The limit position display means (10) is configured to determine that the position and width of the upper end in the height direction are substantially equal to the position and width of the upper end of the front cover (8), respectively. The carrier of a dump vehicle according to claim 1, wherein: 3. The limit position display means (10) includes support members (22, 2) provided at left and right ends with respect to the traveling direction.
3. A dump vehicle according to claim 1, wherein the dump vehicle has a gate-shaped structure including a horizontal member connecting the upper portions of the support members. Loading platform. 4. The dump system according to claim 1, wherein said limit position display means is formed of a plate-like member having a surface provided substantially parallel to the vertical direction. Car bed. 5. The plate-like member (11), wherein the plate-like member (11)
A hole (14) penetrating from the front cover (8) side to the cargo bed (1) side so that the load dropped on the inclined surface of the front cover (8) further into the cargo bed (1). 5. The dump truck carrier according to claim 4, wherein the dump truck has at least one notch. 6. The plate-like member (11), wherein the plate-like member (11)
Plate-like member so that the load dropped forward of the front cover (8) and onto the inclined surface of the front cover (8) enters the loading platform (1).
5. The luggage carrier of a dump vehicle according to claim 4, wherein a predetermined gap is provided between a lower end of the front panel and an upper end of the front panel. 7. The limit position display means (10) is attached to the front panel (2).
6. The loading platform of a dump vehicle according to any one of 6. 8. The limit position display means (10) is attached to the front cover (8).
6. The loading platform of a dump vehicle according to any one of 6.