JP2824682B2 - Compaction degree measuring device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compaction degree measuring apparatus for measuring the amount of settlement from the optical reference surface due to the passage of a rolling machine such as a load roller using a laser beam.

[Conventional technology]

2. Description of the Related Art Conventionally, a light detector is rotated to form an optical reference plane having a horizontal or arbitrary inclination in a predetermined range using a laser beam, and is used as a level detector (receiver) for construction equipment such as a bulldozer or a shovel dozer. Detects this light reference plane with
A device or the like that inputs a signal from a level detector based on this to a control device or the like and automatically controls the height of the earth removal plate or the like to perform leveling or leveling has been put to practical use.

Unfortunately, however, this device cannot be used directly for compaction control of compaction machines,
Not yet applied.

By the way, in compaction management, conventionally, when determining the compaction degree of a road surface such as rocks and gravel, the amount of settlement is used as a guide. That is, after passing through a compaction machine such as a road roller, a measuring rod is set up on the ground that has subsided by passing, and the amount of subsidence is measured by a telescope, and when the amount of subsidence is almost gone, compaction is completed. I have. For the compaction of embankment, it is effective in the management of construction to measure the settlement amount as a measure of the compaction degree by the same method.

[Problems to be solved by the invention]

However, the method as described above, that is, raising the measuring rod at several points after the passage of the load roller or the like and reading the amount of settlement, has a problem in that the work efficiency is low and labor costs are increased.

The present invention has been made in view of the above points, and allows the driver to constantly grasp the settlement amount on the display device near the driver's seat while operating the compaction machine, and to settle the settlement amount data on the compacted surface. It is an object of the present invention to provide a compaction degree measuring device which has high working efficiency and does not increase labor cost, for example, by storing the data in a memory so that the display or printing can be performed at any time by a display device or a printing device.

[Means for solving the problem]

In order to solve the above-mentioned problems, in the present invention, a floodlight that is provided at a base point in construction and emits laser light as an optical reference surface while rotating in a direction substantially parallel to the rolling surface, and a suspension that travels on the rolling surface A rolling machine that raises and lowers the car body with the device,
A level detector (light receiver), which is mounted on the vehicle body side of the rolling machine and senses a laser beam emitted from the projector, in a height direction, and a level detector (light receiver) to which the level detector is attached. A road surface distance measuring device that measures a true distance between one point and a rolling contact surface, a traveling distance measuring device that is provided on a rolling wheel that measures a traveling distance of the compacting machine, and determines a measuring point, An arithmetic unit for calculating a true subsidence amount of the compacting machine from a detection value of the level detector and a detection value of the road surface distance measuring device, and an output value of the arithmetic unit and a storage value of the output value are stored in a driver's seat. And display means for displaying or printing with a display device or a printing device.

[Action]

By adopting the above configuration, while the driver operates the compaction machine, the sinking amount can be constantly displayed or printed on the display device or the printing device near the driver's seat and grasped. Can be determined, and a uniform compacted surface can be obtained with good work efficiency.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a perspective explanatory view showing an outline of the present invention, FIG. 2 is a front explanatory view showing a measuring principle of the present invention, FIG. 3 is a block diagram of one embodiment of the present invention, FIG. 4 and FIG. FIG. 3 is an explanatory diagram showing an example of a settlement amount and the like displayed on a display device.

INDUSTRIAL APPLICABILITY The present invention is used for compacting the ground after leveling or leveling with a bulldozer, shovel dozer, or the like in the construction of a road or the like.

As shown in FIG. 1 and FIG. 2, the compaction degree measuring device of the present invention is provided in a compacting machine R except for the light projector 1. The light projector 1 is provided at a base point (preferably at the center) in construction, and emits laser light as an optical reference surface while rotating in a direction substantially parallel (including a gentle inclination) to the rolling surface. On the other hand, in the rolling machine R, a level detector (light receiver) 5 is mounted on the side of the vehicle body 3 supported by the suspension devices 2 and 2 at a position near the driver's seat 4 that does not obstruct the view. . The level detector 5 is formed by arranging light receiving elements 5a, 5b,... 5n for sensing a laser beam emitted from the projector 1 in a height direction. The height from one point of the vehicle body 3 is about several [mm]. It is preferable that the measurement can be performed within the error of A road surface distance measuring device 6 for measuring the true distance between one point of the vehicle body 3 and the rolling contact surface by ultrasonic waves or the like is provided at one point of the vehicle body 3. That is,
Since the vehicle body 3 is moved up and down by the suspension devices 2, 2, it is necessary to remove the influence of the suspension device. Further, when the rolling bearing surface passes through the rolling bearing wheels 7 and 8, elastic depression due to weight occurs, and therefore, it is necessary to eliminate this effect. The rolling wheel 7 measures the traveling distance of the rolling machine R and measures the measurement points (A, B,.
A mileage measuring device 13 and the like for determining the distance are provided. As shown in FIG. 3, a computing unit 9 is provided in the driver's seat 4 of the compacting machine R, and the detection value x (the value of the level detector 5) of the level detector 5 at the measurement points (A, B,... 2) and the detection value y of the road surface distance measuring device 6 (see FIG. 2), the height x + y from the rolling surface to the light receiving element 5b (one example) that has received light is calculated, and x _{n + 1} The true subsidence amount S is calculated by calculating + y _{n + 1-} (x _n + y _n ). The value output from the arithmetic unit 9 is displayed on a display device 10 (provided in the driver's seat 4) as one of the display means, and is stored in the memory 11, and the display means is obtained from the stored value and the output value. The printout is performed by the printing device 12 as one of them, and information on the amount of settlement as a rolling surface is given.

Next, the operation of the compaction degree measuring device of the present invention will be described. That is, the level detector 5 of the rolling machine R continuously receives the laser beams as the light reference plane emitted from the light projector 1 in the height direction while running the rolling machine, and the light receiving elements 5a, 5b,...
.. Are detected. Since the rolling machine R travels and compacts the ground, the rolling machine R itself sinks. As the number of passes increases, radiation light is emitted by the light receiving element 5d (one example) at a slightly higher position. The amount of settlement can be calculated based on the detected difference.

FIG. 4 and FIG. 5 show an example displayed on the display device 10, and FIG. 4 shows the sum of the detection value x of the level detector and the detection value y of the road surface distance measuring device at each measurement point (A, B). , C …… E)
It is shown by. Of course, it is also possible to continuously measure the surface condition of the ground by increasing the number of measurement points. In addition, P ₁ ……
_Pn indicates the number of passes.

FIG. 5 shows the S (squat amount) at P _{n + 1} -P ₁ , which is also shown at each measurement point (A, B, C... E).

As described above, according to the present invention, it is possible to easily know the state (surface condition, settlement amount) of the compacted ground while being in the driver's seat, and to perform construction work with high working efficiency.

Note that the present invention is not limited to the above embodiment,
Of course, various modifications and embodiments can be made without departing from the spirit of the invention.

For example, for the contents shown on the display device, the height x + y from the rolling surface to the light receiving element and the sinking amount S
And the number of passes P or P _n −
Although it was indicated by 1, the point is that it is only necessary to be able to measure an accurate settlement amount.
It is not limited to this.

〔The invention's effect〕

As described above, while the driver operates the compaction machine, the sinking amount can be constantly displayed and grasped on the display device near the driver's seat, and the sinking amount on the compacted three-dimensional surface can be obtained. Can be stored in a memory and printed out by a printing apparatus, so that work efficiency is good and a proper compaction state can be achieved. Also, labor costs can be significantly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view showing an outline of the present invention, FIG. 2 is a front explanatory view showing a measuring principle of the present invention, FIG. 3 is a block diagram of one embodiment of the present invention, FIG. 4 and FIG. FIG. 3 is an explanatory diagram showing an example of a settlement amount and the like displayed on a display device. R ... rolling machine 1 ... floodlight 2 ... suspension system 3 ... body 4 ... driver's seat 5 ... level detector (receiver) 6 ... road surface distance measuring instrument 7,8 ... compacting Wheel 9 computing unit 10 display device 11 memory 12 printing device 13 odometer

Claims (1)

(57) [Claims] 1. A floodlight provided at a base point for construction and emitting a laser beam as an optical reference plane while rotating in a direction substantially parallel to a rolling surface, and a rolling device in which a vehicle body moves up and down by a suspension device running on the rolling surface. A level detector (light receiver) in which a light receiving element mounted on the vehicle body side of the compacting machine and sensing the laser light emitted from the light projector is arranged in the height direction, and the level detector is attached. A road surface distance measuring device for measuring a true distance between one point of the vehicle body and the rolling contact surface, a traveling distance measuring device provided on a rolling wheel for measuring a traveling distance of the rolling machine and determining a measuring point; An arithmetic unit for calculating a true subsidence amount of the compacting machine from a detection value of the level detector at a measurement point and a detection value of the road surface distance measurement device, and an output value of the arithmetic unit and a storage value of the output value That displays or prints on the driver's seat display device or printing device Compaction measuring device, characterized in that it consists of a unit.