JPH0543003B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is used in the civil engineering field to record the running trajectory of a compaction device when compacting a structure made of clay, soil, concrete, etc. Regarding equipment.

<Conventional technology> In civil engineering works such as the construction of fill dams such as water storage dams, roads, and housing, granular structures such as soil are compacted to sufficient hardness by compaction using compaction devices such as tamping rollers. It is necessary to ensure the stability of objects.

Particularly, in water storage dams, for example, it is necessary to efficiently store water by minimizing leakage of the stored water to the water intake side after it permeates into the dam body.

Therefore, when constructing a water storage dam, compaction equipment is applied multiple times (for example, 8
The core is compacted by rolling it to a sufficient hardness by running the core several times in a predetermined width and thickness.

By the way, since the compaction work has a great effect on the quality of the core after compaction, it is extremely important to check whether the compaction work is being performed according to specifications. For this reason, in the past, reports from compaction equipment operators or observation by supervisors were used to
We were checking to see if the number of compactions (number of compactions), etc. was in accordance with specifications.

<Problems to be Solved by the Invention> However, the conventional method of checking whether the number of compactions is in accordance with the specifications based on a report from the compaction equipment operator or observation by a supervisor requires a great deal of effort. There were problems that not only reduced work efficiency but also lacked accuracy in checking specifications.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a traveling trajectory recording device for a compaction device that can improve compaction work efficiency and accurately confirm the work.

<Means for Solving the Problems> Therefore, as shown in FIG. 1, the present invention provides an azimuth detection means B for detecting the traveling azimuth in a substantially horizontal plane of a compaction device A for compacting a structure. ₁ , and distance detection means B ₂ for detecting the travel distance of the compaction device A.
and recording means C for recording the detection values of B ₁ to _{B 2} of each detection means, and the recorded data or each of the detection means B ₁ to B The present invention is provided with a calculating means D for calculating the traveling trajectory of the compaction device A from the data of ₂ , and a display means E for displaying the calculated traveling trajectory.

<Function> In this way, the travel locus of the compaction device is calculated from the azimuth and the travel distance, thereby improving the efficiency of compaction work and making it possible to accurately confirm it.

<Example> An example of the present invention will be described below based on FIGS. 2 to 6.

In FIG. 2, in front of the driver's seat of the tamping roller 1 as a compaction device, there is a tamping roller 1
A geomagnetic sensing type azimuth sensor 2 is provided as an azimuth angle detection means for detecting the traveling azimuth angle in a substantially horizontal plane. The azimuth angle sensor 2 detects the azimuth angle in a substantially horizontal plane with north and south as a reference by generating an alternating magnetic field in an annular magnetic core using an excitation coil and detecting the output voltage of a detection coil that intersects the magnetic field.

Further, the tamping roller 1 is provided with a potentiometer 3 attached to a connecting device that connects the driver's seat side and the cylindrical roller body 4. Therefore, this potentiometer 3 can detect the turning angle of the roller body 4 that actually compacts a structure such as a core.

Further, the tamping roller 1 is provided with a traveling distance sensor 5 as a distance detecting means, facing the side wall of the roller body 4. The travel distance sensor 5 is composed of an electromagnetic pickup type proximity switch, and outputs a signal corresponding to the number of rotations of the roller body 4. Further, the traveling distance sensor 5 is equipped with two proximity switches arranged at different intervals from each other, and can detect forward movement or backward movement depending on which of them generates a pulse signal first, and is divided into six parts in the roller body 4. It is possible to detect rotating metal parts in cm units.

Further, the tamping roller 1 is provided with a shift position sensor 6 that detects the shift position of the operating lever. The shift position sensor 6 detects whether or not the roller body 4 is being tightened based on the position of the operating lever.

Here, a large number of protrusions are formed on the outer peripheral wall of the roller body 4 to facilitate compaction, and an excitation force is applied to the roller body 4 in the vertical direction by a vibrator (not shown). It is becoming more and more like this.

Further, the tamping roller 1 is provided with a data recording section 7 as a recording means, and detection signals from the respective sensors 2, 3, 5, and 6 are inputted to this data recording section 7. An IC memory (RAM) not shown is detachably attached to this data recording section 7, and each of the sensors 2, 3, 5,
6 detection data are recorded.
Further, the data recording unit 7 is provided with an input device for writing the construction date and time, altitude, two-dimensional coordinates of the compaction work start point, etc. into the IC memory.

On the other hand, for example, the following equipment is installed in a construction office.

That is, the system table 8 includes an I/O 9 connected to an input/output device, a CPU 10 as a calculation means for processing calculations, and a display 11 that displays the results calculated by the CPU 10 on a screen.
and a printer 12 that prints the calculated results.
and are provided. Therefore, the display 11 and the printer 12 constitute the display means, but only one of them may be used.

Next, the action will be explained.

First, to explain the basic structure of the central impervious type Rockfyl storage dam based on Figure 5, a core A made of small-grained material such as clayey soil or breccia-mixed massy sediment is formed in the center. has been done.
Filters B are formed on both sides of the core A and are made of a material with relatively large grain size, such as weathered rhyolite or weathered granite. In addition, a first lock C made of a material such as rhyolite or granite having a grain size larger than that of the material of the filter B is formed at the lower side of each filter B. Also, each first
A second lock D is formed above the lock C, and is made of a material such as rhyolite or granite, which has a slightly larger grain size than the first lock C.

Further, the surface of the second lock D is covered with a lip plug E made of a material such as rhyolite or granite.

When the core A is compacted (rolled) by the tamping roller 1, the material is conveyed to a predetermined thickness (for example, 30 cm), and then the tamping roller 1 is disposed at a predetermined position. Then, the construction date and time are stored in the IC memory installed in the data recording section 7.
Elevation and two-dimensional coordinates of the compaction work start point (X ₀ ,
Y ₀ ).

Thereafter, the tamping roller 1 is caused to run substantially linearly, and the core A is compacted by the roller body 4.
During this tightening work, detection signals from the azimuth sensor 2, potentiometer 3, and travel distance sensor 5 are recorded in the IC memory at regular intervals.

Furthermore, the detection of the steering angle determines the storage cycle in the IC memory, and when the steering angle does not change, the detection data of each sensor 2, 3, 5, and 6 is written at the fixed time interval, and the steering angle is stored in the IC memory. when the angle changes
The detection data of each sensor 2, 3, 5, and 6 is written into the IC memory at intervals shorter than the predetermined time.

In this way, while recording in the IC memory, the tamping roller 1 is caused to run substantially linearly over the core A, thereby compacting the core A a plurality of times by a predetermined width.

After the compaction work is completed, take out the IC memory from the data recording section 7 and attach it to I/O9.

Then, in the CPU 10, each of the sensors 2, 3,
The traveling locus of the tamping roller 1 is calculated based on the detection data of Nos. 5 and 6. This calculation routine will be explained according to the flowchart of FIG.

In step S1, various detection data recorded in the IC memory are read.

In S2, it is determined whether the tamping roller 1 is about to start running or is running according to the on/off state of the engine key switch of the tamping roller 1. If YES, the process advances to S3, and if NO, the routine is ended.

In S3 to S5, the current travel distance and steering angle are calculated based on the data or initial values calculated in the previous routine and the data read in the current routine.

Specifically, the amount of change from the previous routine to the current routine is calculated to calculate the travel distance and steering angle, respectively.

Furthermore, since the azimuth angle is based on geomagnetic detection, it is an absolute angle with north and south as a reference, so the azimuth signal read this time is processed as is.

In S6, it is determined whether or not vibration is occurring by detecting the position of the operating lever detected by the shift position sensor 6. If YES, the roller body 4 is vibrated by the vibrator and the compaction operation is about to start or It is determined that compaction work is in progress, and the process proceeds to S7. If NO, the process proceeds to S13.

In S7, it is determined whether or not the calculated travel distance has changed, and if YES, the tamping roller 1
is determined to be moving forward or backward and is running,
Proceed to S8, and if NO, proceed to S13.

Since S8 to S12 travel in a predetermined approximately straight line in a limited area, self-correction is performed as needed without external information from a third party, and calculations are made to perform corrections to eliminate cumulative errors. .

In S8, it is determined whether the travel distance calculated in the previous routine is equal to or greater than a predetermined value, and if YES, the process advances to S9, and if NO, the process advances to S11.

In S9, it is determined whether the travel distance calculated in the current routine is equal to or greater than a predetermined value. If YES, the process advances to S10, and if NO, the process advances to S11.

In S10, the azimuth calculated in S5 is corrected. That is, since the azimuth sensor 2 has a structure that detects the azimuth in a horizontal plane using geomagnetism,
When the position of the azimuth angle sensor 2 changes in the vertical plane, the detected azimuth angle changes due to the change or due to the magnetization of the tamping roller 1, and a detection error occurs. is automatically corrected without any information from a third party. Specifically, since traveling in a substantially straight line is traveling a predetermined distance at a predetermined speed, the direction detected this time can be regarded as being equal to the direction in which the vehicle is traveling in a substantially straight line.

In S11, it is determined whether the difference between the azimuth angle of approximately straight travel and the azimuth angle calculated in the current routine is greater than or equal to a predetermined value. If YES, the process advances to S13; if NO, the process advances to S12.

In S12, the tamping roller 1 moves straight when the difference between the azimuth of approximately straight travel and the current azimuth is within a predetermined value, and there is no change in the azimuth. Keep in azimuth.

In S13, the current position is calculated from the azimuth corrected in S10 and S12 and the currently detected travel distance.

Then, in S14, the running trajectory of the tamping roller 1 is displayed by displaying a plot on the display 11 based on the calculated travel distance, steering angle, and azimuth angle.

Further, in S15, a signal corresponding to the data is output to the printer 12 to print the running trajectory of the tamping roller 1.

In this way, the actual traveling locus of the tamping roller 1 during the compacting operation can be reproduced on the screen or printed paper as shown by the solid line in FIG.

Further, the number of compactions is counted when the tamping roller 1 reaches substantially the same trajectory as the previous travel trajectory, and is recorded and displayed as the number of compactions. In addition, the broken line part in FIG. 6 shows the compaction width of the roller main body 4.

As explained above, after the travel trajectory of the tamping roller 1 during compaction work is detected and recorded by the azimuth sensor 2, potentiometer 3, travel distance sensor 5, etc., the travel trajectory is determined based on the detected values. Compared to the conventional method, which uses reports from operators or supervisors to confirm whether compaction work is being carried out according to specifications, compaction work can be done more efficiently and the work can be done more efficiently. can be accurately confirmed. Furthermore, data on the travel trajectory can be reliably saved.

Incidentally, the present invention can also be applied to a compaction device for compacting concrete.

<Effects of the Invention> As explained above, the present invention detects and reproduces the actual traveling trajectory of the compaction device during work, thereby improving the efficiency of compaction work and improving the efficiency of compaction work. You can check it accurately.

[Brief explanation of the drawing]

Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is a block diagram showing an embodiment of the present invention, Fig. 3 is another block diagram of the same as above, Fig. 4 is a flowchart of the same, and Fig.
This figure and FIG. 6 are diagrams for explaining the same effect as above. 1... Tamping roller, 2... Azimuth sensor, 3... Potentiometer, 5... Mileage sensor, 7... Data recording section, 10... CPU, 1
1...display, 12...printer.

Claims (1)

[Claims] 1. A compaction device is equipped with a detection means that includes at least an azimuth detection device that detects the traveling azimuth in a substantially horizontal plane of a compaction device that compacts a structure, and a distance detection device that detects the traveling distance of the compaction device. and a recording means for recording the detection values of each of the detection means, a calculation means for calculating a travel trajectory of the compaction device from the recorded data or data of each of the detection means, and displaying the calculated travel trajectory. A running trajectory recording device for a compaction device, characterized in that it is equipped with a display means for displaying.