JP2001146760A - Earth-moving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an earth-moving machine in which the state of earth and sand in the front of an blade is understood from a cab in excavating and ground leveling work with the blade. SOLUTION: In this earth-moving machine 1, through holes 8 are provided for a blade 2 to make an operator in a cab 3 understand the state in front of the blade 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthmoving machine for visually observing the state of earth and sand on the front surface of a dumping plate during dosing work with the dumping plate.

[0002]

2. Description of the Related Art Conventionally, in order to improve the operability of an earth removal plate, an attitude control of the earth removal plate and an automatic leveling device have been proposed. Further, there is known a detecting device which detects a fullness ratio of a front surface of a blade by a load applied to the blade, and allows an operator to know the state of earth and sand. (Japanese Patent No. 284684
See No. 8 publication. )

There is also known a blade device in which an upper blade, which is curved and extends so as to cover the front of a blade main body, is formed as a separate body by transparent resin molding. (See Japanese Utility Model Publication No. 62-14170.) Further, as an opening provided in the earth discharging plate, an opening is provided in a part of the frame-shaped plate attached to the back of the earth discharging main plate.
It is known that a tool storage box portion extending from an opening is formed between a main discharging plate and a frame plate. (JP-A-10-16
See No. 8931. However, during excavation and leveling work using the earth removal plate of the earthmoving machine, the driver cannot see the actual soil condition in front of the earth removal plate. The driver has difficulty operating the blades without knowing what is going on nearby. On the other hand, 62-1
In Japanese Patent No. 4170, the biggest bottleneck is that the transparent resin above the blade body is broken by falling rocks or the like.

[0004]

What makes excavation and leveling work with earthmoving machines the most difficult is the blade (blade).
Is invisible to the driver. In order to solve this problem, it is an object of the present invention to provide a simple device in which the front surface of a discharge plate can be visually recognized.

[0005]

According to a first aspect of the present invention, there is provided an earthmoving machine in which a driver in a driver's cab has a through-hole for visually confirming a situation in front of the earthing plate. It is a machine.

In order to achieve the above object, the invention according to claim 2 is that the through holes are provided on both sides of the earth discharging plate.

According to a third aspect of the present invention, a plate is mounted around the through hole.

In order to achieve the above object, the invention according to claim 4 is such that a cover made of a transparent material is provided in the through hole.

[0009]

[Operation] With the above configuration, in the excavation and leveling work with the earth removal plate of the earthmoving machine, the excavation condition of the earth and sand in front of the earth removal plate can be understood, the operation is improved, and safety at the time of the operation is secured.
The driver can easily operate the earth removal plate by the driver himself sensing the holding of the earth and sand on the earth removal plate and the balance between the left and right earth and sand. By attaching a plate around the through hole, the periphery of the through hole can be reinforced. By providing a lid of a transparent material in the through hole,
The excavation situation of the earth and sand in front of the earth removal plate can be understood, and the earth and sand can be prevented from spilling behind the earth removal plate. The transparent material is a reinforced plastic, a reinforced glass or the like.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. FIG. 1 is a perspective view of an earth moving machine. FIG. 2 is an explanatory diagram of a state in which the driver can see the through hole. FIG. 3 is a front view of the earth discharging plate having a plate attached around the through hole. FIG. 4 is a cross-sectional side view of the earth discharging plate shown in FIG. FIG. 5 is a front view of the earth discharging plate provided with a transparent material lid in the through hole. FIG. 6 is a sectional side view of the earth discharging plate shown in FIG. FIG. 7 is a cross-sectional side view of the earth discharging plate in which a lid made of a transparent material is attached to the front surface of the through hole. FIG. 8 is a cross-sectional side view of an earth discharging plate provided with a plurality of through holes in a vertical direction.

In FIG. 1, reference numeral 1 denotes an earth-moving machine (bulldozer).
The earth removal plate 2 is operated by the lift cylinder 5, the tilt cylinder 12, and the like to excavate and level the earth and sand.
A cutting edge 9 is attached to the lower end of the front surface of the dumping plate, and side cutters 10 are attached to both sides of the cutting edge 9. The body 2 is supported by the support frame 7, the brace 13 and the tilt cylinder 12.
The earthmoving machine moves forward and backward with the running body (footwear) 11. A through hole 8 is provided in the earth removal plate 2 so that the driver can see the through hole 8 as shown in FIG. 2 so that the driver can understand the sediment holding in the earth removal plate and the balance of the left and right earth and sand. I do. In particular, if the through holes 8 are attached to the left and right so that the driver can see them, the left and right balance of the earth removal plate 2 can be more clearly understood.

FIGS. 3 and 4 show a reinforcing plate in which a plate 19 is fitted around a through hole formed in the discharge plate 2.
The discharging plate 2 includes a front plate 14, a rear plate 15, an upper horizontal member 16, a lower horizontal member 17, and the like.

FIGS. 5 and 6 show a transparent material 20, for example, a reinforced plastic lid or a reinforced glass lid embedded in the through hole 8 formed in the earth removal plate 2, and a transparent reinforced plastic Or a tempered glass lid is fixed with a fixing tool 21.

As shown in FIG. 7, only the front surface of the earth discharging plate 2 may be covered with a transparent material 20. Further, as shown in FIG. 8, a plurality of through holes 8 may be provided in the earth discharging plate 2, or the through holes 8 may be covered with a transparent material.

Next, the operation of the earthmoving machine will be described. The earth removal plate 2 is lowered to the ground by the lift cylinder 5, and the earthmoving machine is advanced to perform the dozing operation. The earth and sand rises along the front surface of the earth discharging plate 2, and the degree of the earth and sand rising can be seen by the driver through the through hole 8 from the cab. Since the driver can grasp the sediment holding state of the earth removal plate 2 and the balance between the left and right earth and sand of the earth removal plate 2 in the driver's cab, the operation can be performed efficiently and safely.

Since the condition of the front surface of the earth removal plate 2 can be known from the operator's cab, raising and lowering the cutting edge 9 causes the earth removal plate 2.
Excavation and leveling can be done easily.

[0017]

As described in detail above, the present invention allows the driver himself / herself to sense from the operator's cab the trapping of earth and sand in the earth removal plate and the balance of earth and sand on the left and right of the earth removal plate, thereby improving the earth removal work. . Further, since the situation in front of the earth removal plate can be known from the driver's cab, safety during work is ensured.

[Brief description of the drawings]

FIG. 1 is a perspective view of a bulldozer to which an earth discharging plate according to an embodiment of the present invention is attached.

FIG. 2 is an explanatory diagram of a field of view seen from a driver.

FIG. 3 is a front view of a discharge plate having a plate attached around a through hole.

FIG. 4 is a cross-sectional side view of the discharge plate illustrated in FIG. 3;

FIG. 5 is a front view of a dump plate in which a transparent material is attached to a through hole.

FIG. 6 is a cross-sectional side view of the dump plate illustrated in FIG. 5;

FIG. 7 is a cross-sectional side view of a discharge plate in which a transparent material is attached to a front surface of a through hole.

FIG. 8 is a cross-sectional side view of an earth discharging plate provided with a plurality of through holes.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Earth-moving machine 2 ... Discharge plate 3 ... Operator cab 4 ... Body 5 ... Lift cylinder 8 ... Through-hole 9 ... Cutting edge 19 ... Plate 20 ... Transparent material 21 ... Fixture

Claims (4)

[Claims] 1. An earthmoving machine, wherein a through hole is provided in a dumping plate so that a driver in a driver's cab can see a state in front of the dumping plate. 2. The earth-moving machine according to claim 1, wherein the through holes are provided on both sides of the earth removal plate. 3. The earthmoving machine according to claim 1, wherein a plate is attached around the through hole. 4. The earth-moving machine according to claim 1, wherein a cover made of a transparent material is provided in the through hole.