JP2011017238A - Device enabling operator to visually recognize angle of hydraulic shovel bucket easily from operator's seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To overcome the problems of a conventional hydraulic shovel wherein, when excavation finish is carried out with a hydraulic shovel, skill for an accurate and beautiful bucket-finished surface is required since the tilting of the finished surface is difficult to observe from the operator's seat, and a machine guidance technique, in which measuring instruments and personal computers remarkably advanced in recent years are utilized, is difficult to adapt to the hydraulic shovel.SOLUTION: This grade recognizing device can easily recognize the tilting of the bucket-finished surface from the operator's seat, and also recognize the perpendicularity of a prism to a bucket cutting edge which is required for machine guidance.

Description

  The present invention relates to a hydraulic excavator attachment and machine guidance technology.

In finishing operations such as slope shaping with a hydraulic excavator, the gradient of the bucket finishing surface 2 cannot be visually observed from the driver's seat. In general, work is carried out based on pre-installed tensions.
In recent years, hydraulic excavators with machine guidance that include an angle sensor and GPS and display a bucket gradient on a driver's seat monitor are known.

  In recent years, surveying instruments such as automatic tracking total stations have advanced, and construction machines such as bulldozers and graders equipped with machine guidance technology such as prisms for acquiring position data during work and monitors that display the difference from the design have increased. Yes.

  In finishing work such as slope shaping, the difference from the design is accurately measured after construction with a hydraulic excavator. As a result of surveying, parts that deviate from the standard values are corrected again with a hydraulic excavator.

Indication of invention

Problems to be solved by the invention

  It is necessary to install the exact slope of the slope of the slope for the work that uses the tension. Since the gradient of the finished surface 2 cannot be seen from the driver's seat, skilled skills are required for the work. Hydraulic excavators with machine guidance are expensive and cannot be removed. Also, finishing work such as slope shaping is performed while looking at the state of the bucket and the excavation surface. At the same time, it is difficult to move the line of sight greatly when looking at the driver's seat monitor frequently.

  A bulldozer or grader is a flat finishing machine with a gentle slope, and even if a prism is mounted directly on a soil removal board, etc., there is little effect on the vertical accuracy. Direct adaptation is difficult because vertical accuracy greatly affects height accuracy.

  In finishing operations such as slope shaping, if the operator can always grasp whether the difference from the design is within the standard value range or outside the range when working with a hydraulic excavator, it is necessary to perform correction work after waiting for the survey result The overall efficiency of the work can be improved.

Means for solving the problem

An inexpensive and detachable device that can visually inspect the finishing surface gradient 2 that is difficult to recognize from the driver's seat is directly attached to the bucket with little eye movement.
In the apparatus of the present invention, the recognition line 5, the member 7 and the weight 9 are fixed by a hinge 8, and the upper surface of the member 7 is always kept horizontal by adjusting the balance of the weight 9. The other members are fixed to the bucket and fluctuate according to the fluctuation of the bucket angle. The recognition line 6 having the same color and the same shape as the recognition line 5 is provided on the member 10 at intervals above and below the recognition line 5, and the driver seat of FIG. As perceived. When the bucket finishing surface 2 is set to a target gradient, when the member 10 is fixed at a bucket angle where the recognition line 5 is located at the center of the upper and lower recognition lines 6 as shown in FIG. Only when the recognition line 5 is positioned at the center of the upper and lower recognition lines 6, otherwise, the recognition line 5 is biased toward the upper or lower recognition line 6 as shown in FIG. As a result, the state of the finished surface 2 that cannot be directly seen can be recognized from the driver's seat in the state of the recognition line 5 and the recognition line 6.

  When the prism is directly attached to the bucket of the hydraulic excavator, the vertical of the line connecting the blade edge 3 and the prism 4 is indispensable for maintaining the measurement accuracy, and the state needs to be easily recognized from the driver's seat. The member 10 is fixed so that the recognition line 5 is at the center of the upper and lower recognition lines 6 when the line between the prism 4 and the bucket blade edge 3 is kept at a bucket angle. Thereby, it can be recognized that the line between the prism 4 attached to the bucket and the bucket blade edge 3 is vertical from the driver's seat.

  The member 10 is fixed so that the recognition line 5 is positioned at the center of the upper and lower recognition lines 6 while the bucket finishing surface 2 is adjusted to the design finishing gradient and the line connecting the blade edge 3 and the prism 4 is kept vertical. When the recognition line 5 is located at the center, the bucket finishing surface can be kept at the designed finishing gradient, and at the same time, the line connecting the prism 4 and the blade edge 3 can be kept vertical.

The invention's effect

  It is sufficient to install the stringer as a minimum. Since the recognition line 5 and the recognition line 6 can be seen from the driver's seat, the bucket angle can be adjusted to the slope of the slope regardless of the skill level in finishing operations such as slope shaping. Since it is directly attached to the bucket, there is little movement of the line of sight and it is possible to concentrate on the work while looking at the bucket and the finished surface. Since the display is not a numerical value, instantaneous recognition is possible. Due to its simple structure, it is inexpensive, sturdy and easy to remove. Further, depending on the soil condition of the excavation surface, it is possible to estimate the change in soil quality, the hardness, and the like based on how the recognition line 5 is shaken.

  Since the vertical of the prism can be confirmed and adjusted from the front of the driver's seat and the exact vertical distance between the prism 4 and the bucket blade edge 3 can be maintained, measurement errors in finishing a hydraulic excavator used on a steeply inclined surface can be reduced. By increasing the ratio of the distance between the horizontal portion of the member 7 and the prism blade edge, individual differences in recognition can be adjusted to increase measurement accuracy.

  If a total station that tracks the prism is used, an accurate difference from the design at the position of the blade edge 3 can be grasped while finishing. It is not necessary to correct the part that is out of the standard value. It is also possible to finish the finished measurement at the same time by recording the difference from the design as needed during work.

In order to carry out the invention, it is best to have a strong and simple form that can recognize the finished surface gradient 2 and the vertical of the line connecting the prism 4 and the blade edge 3 from the driver's seat at the same time and is not affected by earth and sand. Hereinafter, embodiments will be described with reference to FIGS.
7 is a side view of the apparatus of the present invention, FIG. 6 is a plan view, and FIG. 8 is a detailed view of the front as viewed from the driver's seat. A member 7 for attaching the recognition line 5 and a weight 9 for keeping the upper end of the member 7 horizontal are fixed to the member 10 by a hinge 8. In addition, a recognition line 6 is attached to the member 10 above and below the recognition line 5, and a prism 4 for attaching a surveying machine such as automatic tracking to acquire position data is attached to the upper end of the member 10.

  FIG. 1 is a side view of the device of the present invention attached to a hydraulic shovel bucket 1, and FIG. 2 is a front view seen from the driver's seat. The member 11 maintains a distance where the apparatus of the present invention is not affected by earth and sand during excavation and leveling work of the bucket 1, and an auxiliary member for mounting the apparatus of the present invention can adjust the length protruding from the bucket as necessary.

  When the member 10 is attached to the member 11, the gradient of the finished surface 2 is accurately set with a normal gradient device or the like, and at the same time, the line connecting the bucket blade edge 3 and the prism 4 is fixed vertically. Further, the bolt 12 and the bolt 13 are adjusted and fixed so that the identification line 5 is in the center of the identification line 6 in this state.

  FIG. 1 shows the finished surface 2 in the case of cut finishing, but when the finished surface 2 is set for flat finishing, the configuration shown in FIG. 12 is obtained. Moreover, in the case of finishing of embankment, it becomes the form of FIG.

  The prism 4 is not required when used only to maintain the angle of the finishing surface 2 of the bucket 1, but the prism is used when the difference from the design value of the bucket tip position is to be grasped by a surveying instrument such as automatic tracking. The exact length in the state where the line between 4 and the blade edge 3 is vertical is measured.

It is a side view which shows the cut part Example of the gradient recognition apparatus of this invention. It is the front view seen from the driver's seat side in the state of FIG. It is a side view which shows the positional relationship of the finishing surface 2 and the blade edge | tip 3 prism 4 in the case of a cut. It is a side view which shows the positional relationship of the finishing surface 2 and the blade edge | tip 3 prism 4 in the case of embankment. It is the front view seen from the driver's seat side in the state of FIG. 3 and FIG. It is the plane detailed view which looked at this invention apparatus from the top. It is side surface detail drawing of this invention apparatus. It is the front detailed drawing which looked at the device of the present invention from the driver's seat side. It is a front view in case the recognition line 5 is located in the center of the upper and lower recognition lines 6. FIG. It is a front view in case the recognition line 5 is located above the upper and lower recognition lines 6. FIG. It is a front view when the recognition line 5 is located below the upper and lower recognition lines 6. It is a side view which shows the plane part Example of the gradient recognition apparatus of this invention. It is a side view which shows the embankment part Example of the gradient recognition apparatus of this invention.

DESCRIPTION OF SYMBOLS 1 Hydraulic shovel bucket 2 Finishing surface of hydraulic shovel bucket 3 Cutting edge of hydraulic shovel bucket 4 Prism for total station such as automatic tracking 5 Central recognition line 6 Vertical recognition line 7 Member such as C-shaped steel 8 Hinge 9 Weight 10 Member 11 such as C-shaped steel 11 Members such as flat steel 12 bolts 13 bolts

Claims (1)

  An apparatus that can easily recognize from the driver's seat the vertical line of the line connecting the finishing surface gradient 2 set on the excavator bucket 1 and the bucket blade edge 3 and the automatic tracking total station prism 4.

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