JPS63297607A - Core rolling pressure locus recorder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is used in the civil engineering field to record the travel 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 fill dams such as water storage dams, roads, and residential land development, granular structures such as soil are compacted to sufficient hardness by compaction using compaction devices such as tamping rollers, and the granular structure is 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, a compaction device is run multiple times (e.g. 8 times) over a core that has a water-blocking function.
The core is compacted by rolling it to a sufficient hardness 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,
Conventionally, it has been confirmed whether the number of times of compaction (number of compactions), etc. is in accordance with specifications based on a report from the operator of the compaction device or observation by a supervisor.

<Problems to be Solved by the Invention> However, the conventional method of checking whether the number of times of compaction is in accordance with specifications based on reports from the operator of the compaction equipment or observation by a supervisor requires a great deal of labor. In addition to reducing work efficiency, there was a problem in that the accuracy of specification confirmation was lacking.

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> For this reason, the present invention, as shown in FIG. The compaction device A is equipped with a detection means including at least a distance detection means B2 for detecting the traveling distance of A, and a recording means C for recording the detected values of each of the detection means 81 to B; data or each of the above-mentioned detection means B;

- Calculating means for calculating the traveling trajectory of the compaction device A from the data of B2, and display means E for displaying the calculated traveling trajectory.
I tried to prepare for this.

<Function> In this way, the traveling locus of the compacting device is calculated from the direction and the traveling distance, thereby improving the efficiency of compacting 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, a tamping roller 1 as a compaction device is shown.
A geomagnetism sensing type azimuth sensor 2 is provided in front of the driver's seat as a azimuth detecting means for detecting the traveling direction of the tamping roller l. 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 rotation speed 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 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 provided as markings.

Further, the tamping roller 1 is provided with a shift position sensor 6 that detects the shift position of the operating lever. This shift position sensor 6 changes depending on the position of the operating lever.
This detects whether or not the roller main body 4 is being compacted.

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 has become so.

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, 5.6 are inputted to this data recording section 7. This data recording unit 7 includes an IC memory (RAM) not shown.
is detachably attached to the IC memory, and the detection data of each of the sensors 2, 3, and 5.degree. 6 is recorded in this IC memory.

The data recording unit 7 also has the construction date and time stored in the IC memory.
An input device is provided for writing the altitude, two-dimensional coordinates of the compaction work start point, etc.

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

That is, the system table 8 includes the l109 connected to the input/output device and the CP as the calculation means for processing the calculations.
A display 11 that displays the results calculated by the CPU 10 on a screen, and a printer 12 that prints the calculated results are provided. Therefore, although the display 11 and the printer 12 constitute the display means, only one of them may be used.

Next, the action will be explained.

First, to explain the basic structure of a central water supply type rockfill 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. Further, at the lower side of each filter B, a tenth block C made of a material such as rhyolite or granite, which has a grain size larger than that of the filter B material, is formed. Moreover, above each 10th hole C, a 20th hole D is formed of a material such as rhyolite or granite, which has a slightly larger grain size than the 10th hole C.

Furthermore, the surface of the 20th piece D is covered with a riprap E made of rhyolite, granite, or other material.

Then, the core A is compacted (
When rolling), the material is rolled to a predetermined thickness (for example, 30cm).
m) After taking out the lit, arrange the tamping roller 1 at a predetermined position. Then, the construction date and time, the altitude, and the two-dimensional coordinates (X,, y,) of the compaction work start point are stored in the IC memory attached to the data recording section 7.

After that, the tamping roller 1 is made to run approximately in a straight line,
The core A is compacted by the roller body 4.

During this compaction work, the azimuth sensor 2. Detection signals from the potentiometer 3 and the mileage 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, 5.6 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, 5.6 is written into the IC memory at shorter intervals 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, and the core A is compacted a plurality of times by a predetermined width.

After the compaction work is completed, the IC memory is taken out from the data recording section 7 and attached to l109.

Then, in the CPU10, each of the sensors 2 and 3 degrees 5.6
The running trajectory of the tamping roller 1 is calculated based on the detected data. 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, is running or is running hard, depending on the on/off state of the engine key switch of the tamping roller 1, and if YES, the process advances to S3, and if NO, the routine is ended.

In steps 83 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 determined by geomagnetic detection, it is an absolute angle based on north and south, 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, and YES is determined.
When this happens, the roller main body 4 is vibrated by the vibrator and it is determined that the compacting work is about to start or that the compacting work is in progress, and the process advances to S7, and when the answer is No, the process advances to S13.

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

Since the vehicle 88 to SL2 travels in a predetermined substantially straight line in a limited area, it performs self-correction as needed without external information from a third party, and calculates to perform correction to eliminate cumulative errors. .

In S8, it is determined whether the mileage calculated in the previous routine is greater than or equal to a predetermined value, and if YES, the process advances to S9 and N.
If o, proceed to Sll.

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

In SIO, the azimuth calculated in S5 is corrected. That is, since the azimuth sensor 2 has a structure that detects the azimuth in the horizontal plane using earth's magnetism, when the position of the azimuth sensor 2 changes in the vertical plane, it is detected by the change or by the magnetization of the tamping roller 1. Since the azimuth angle changes and a detection error occurs, the detection error of the azimuth angle is automatically corrected without information from a third party. Specifically, since traveling in a substantially straight line involves 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 travels in a substantially straight line.

In Sll, 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, and if YES, the process advances to S13, and if NO, the process advances to S12.

In step 312, when the difference between the azimuth of approximately linear travel and the current azimuth is within a predetermined value, it is assumed that the tamping roller 1 moves straight and there is no change in the azimuth, and the azimuth is the same as that of the previous routine. Keep in azimuth.

In S13, the SI0. The current position is calculated from the azimuth angle corrected in step 312 and the currently detected travel distance.

Then, in S14, the travel locus 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. Incidentally, the broken line portion in FIG. 6 shows the roller body 4 being compacted.

As explained above, the travel trajectory of the tamping roller 1 during compaction work is detected by the azimuth angle sensor 2. Potentiometer 3. After detecting and recording with the mileage sensor 5 etc., the traveling trajectory is reproduced based on those detected values, so
Compared to the conventional method, which confirms whether compaction work is being performed according to specifications based on reports from the operator or supervisor, compaction work can be carried out more efficiently (and the compaction work can be confirmed accurately). .Furthermore, the travel trajectory data 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, and Fig. 4 is a block diagram showing an embodiment of the present invention.
The figure is a flowchart of the same as above, and FIGS. 5 and 6 are diagrams for explaining the operation of the same.

Claims (1)

[Claims] The compaction device is equipped with a detection device including at least a direction detection device that detects the traveling direction of the compaction device that compacts a structure, and a distance detection device that detects the traveling distance of the compaction device, and each of the detection devices described above. A recording means for recording a detected value of the compaction device, 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 a display means for displaying the calculated travel trajectory. A core compaction locus recording device characterized by: