JPS62202131A - Bucket device of construction machine - Google Patents

Abstract

PURPOSE:To greatly enhance the efficiency of operations by a method in which the bucket body can be worked in a fully loaded state all the time by setting a full load detector to detect the amount of soil and sand fully housed in the bucket body on a position near the opening of the bucket. CONSTITUTION:Plural full-load sensors 4 consisting of a supersonic wave generator and a supersonic wave receiver are set toward the direction of an excavating blade 3 on slightly above the opening of the bucket body 1 over the widthwise direction of the bucket body 1 on the back plate 1a of the bucket body 1 to be attached to the tip of the working arm 2 of power shovel or wheel loader, etc. When soil heaves upwards from the opening edge of the bucket body 1, supersonic waves from a supersonic wave generator are reflected on the soil and sand and reach a supersonic wave receiver to detect the full-load amount. The full-load amount being detected is displayed on a displayer, etc., CRT monitor, etc., set near a driver's seat.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a bucket device for construction machinery having a fullness detector.

BACKGROUND OF THE INVENTION Conventional construction machines equipped with buckets include power shovels, wheel loaders, and scrapers.

When working with these construction machines, it is necessary to carry out loading work with the bucket body filled with earth and sand in order to increase work efficiency.

Problems that the invention aims to solve However, in the case of a wheel loader or the like that is mounted forward on the bucket body, the visibility from the driver's seat during excavation or transporting millet is difficult to see as shown in Figure 1. It is often difficult to see clearly from the driver's seat due to the accumulation of dirt inside the main unit. For this reason, in the past, the level of accumulation of dirt was judged based on the driver's sense of feeling, and the work of scooping and loading the dirt was performed, resulting in large variations in the amount of fullness of the bucket body.

As a result, loading work was often carried out with an amount that did not exceed the capacity of the bucket itself, resulting in problems such as poor work efficiency.

This invention was made for the purpose of improving the above-mentioned problems.

Means and Effects for Solving Problems A full amount detector for detecting the full amount of earth and sand contained in the bucket body is installed near the opening of the bucket body installed as a working machine on a construction machine. A bucket device for construction machinery that displays the full amount on a display device based on a signal from a detector, so that work such as loading can be performed with the bucket always containing earth and sand at full capacity.

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 on the right side of the figure is a bucket body attached to the tip of a working machine arm 2 of a power shovel, wheel loader, etc. A plurality of digging blades 3 are provided at intervals.

In addition, the rear plate 1a of the bucket body 1 has a
The full amount detector 4 force S is located slightly above the opening of the
The excavator blade is installed facing in three directions. The full amount detector 4 includes, for example, an ultrasonic transmitter 4a as shown in FIG.
The ultrasonic receiver 4b is installed at multiple locations in the width direction of the bucket body 1 in the following manner.

In other words, the rear plate 1a of the bucket body 1 is provided with a window hole 1b to which a replacement net 5 is attached for each full amount detector 4, and a protective wj5 is located in the rear blade of the window hole 1b. The ultrasonic transmitter 4a and receiver 4b of the full amount detector 4 are mounted vertically apart from each other. Then, from the ultrasonic transmitter 4a, the bucket body 1 is transmitted as shown in FIG.
Ultrasonic beams 4'l # 4'2 s 4'3 J 4'4 are emitted in multiple lines so as to be substantially parallel to the edge of the opening.

If the ultrasonic waves emitted from the ultrasonic transmitter 4a do not reach the opening #& of the bucket body 1, the ultrasonic waves emitted by the earth and sand stored in the bucket body j will not be reflected. If it rises above the edge of the opening, it will be reflected by this earth and sand and reach the receiver 4b.
The ultrasonic wave received during the test detects whether the soil is full or not as follows.

Next, the operation will be explained with reference to the block diagram of the control system shown in FIG. .

4g -43, 44 and T, these full detectors 4□ to 4. The forces are operated every other time as shown in FIG. 5 (B) so that the forces 1 do not interfere with each other (T indicates that the force S is in operation).

In other words, the control circuit 10 sends a control signal to the ultrasonic transmitter 4a and the receiver 4b to operate in the order of operation shown in Figure 5, and the reflected waves from the earth and sand are received. Arithmetic circuits 11 and 12 calculate the distance to the earth and sand based on the time, and the fullness rate based on the presence or absence of reflected waves.

At the same time, the angle signal from the angle detector 13 provided on the work equipment arm 2 or boom (not shown) is input to the calculation circuit 14 to calculate the attitude of the bucket body 1, and display it together with the distance and the full car signal. Output to 15. The display device 15 includes, for example, an image processing circuit +58 and a CRT monitor 15b installed near the driver's seat 16.
After processing the input signal at 5a, the CRT monitor +5b
As shown in FIG. 7, the attitude of the bucket body 1, the accumulation of earth and sand, and the fullness rate are displayed.

As a result, the driver can carry out excavation work while looking at the CRT monitor +5b, thereby allowing him to carry out loading work, etc., with the excavator fully loaded with earth and sand.

In addition to the CRT monitor +5b, the display device 15 may also be a bar graph display device that displays the full amount and the like in a bar graph.

Further, in the above embodiment, the case of a bucket has been described, but the present invention can also be applied to an earth-moving machine mounted on a large bulldozer or the like, where it is difficult to see the amount of earthwork than the driver's seat.

Furthermore, the full amount detector 4 is not limited to one that uses ultrasonic waves, but may also use an infrared sensor, a visual sensor such as a CCD, or the like.

Effects of the Invention As described in detail above, the present invention is provided with a small full displacement device for detecting the full amount of earth and sand near the opening of the bucket body, so that the driver can detect the signal sent from the full amount detector. By working while looking at the display device that displays the full amount, the bucket body can be filled with earth and sand without any skill required.

This allows loading and unloading operations to be carried out with the bucket body always full, resulting in a significant improvement in work efficiency.

[Brief explanation of drawings]

Fig. 1 is an explanatory view showing the field of view of the working machine seen from the driver's seat, Fig. 2 is an underwater side view of an embodiment of the present invention, Fig. 3 is a perspective view thereof, and Fig. 4 is the same as Fig. 2. An enlarged sectional view inside the circle, Fig. 5 1 and (portion 1 is an explanatory view of the operation, Fig. 6 is a perspective view of the vicinity of the driver's seat,
FIG. 7 is an explanatory diagram showing the display on the CRT monitor, and FIG. 8 is a block diagram of the control system. 1 is the bucket body, 4 is the full amount detector.

Claims (1)

[Claims] This bucket device for construction machinery includes a full amount detector 4 for detecting the full amount of earth and sand contained in a bucket body 1 near the opening of a bucket body 1 installed as a working device in the construction machine.