KR200344084Y1 - Multiple load cell structure of measurable bearing - Google Patents

Abstract

The present invention relates to a plurality of load cell structures of a measuring bridge device, by inserting a plurality of load cells into the measuring bridge support to reduce the error rate for the upper load and to determine whether the eccentricity. It is intended to be able to analyze the characteristics of fluid behavior.

In the load cell mounting structure of the present invention for realizing this, the upper plate 1 and the lower plate 2 are fixed to the bridge upper structure 5 and the lower structure 6 by anchor bolts 3 and 4, respectively. The rubber plate 7 is inserted into the upper plate 1 and the lower plate 2, and the lower plate 2 is provided with a measurement bridge support provided with a load cell 9 for load measurement in contact with the bottom surface of the rubber plate 7. (10), characterized in that the lower plate 2 is provided with a plurality of load cells (9).

Description

MULTIPLE LOAD CELL STRUCTURE OF MEASURABLE BEARING}

The present invention relates to a measuring instrument, and more particularly, to a load cell mounting structure of the measuring apparatus for improving the eccentricity of the upper load and the reliability of the load measurement.

In general, the bridge arrangement is installed between the bridge deck structure and the bridge or alternating concrete to serve to transfer all the loads transmitted from the upper portion of the structure to the lower pier or alternating concrete structure. Such a device is not only performing a function of transmitting a load, but research is being conducted to perform various functions in order to solve a problem that may be caused by connecting two structures.

On the other hand, in recent years there has been proposed a measuring device for a load cell installation method for adding a measurement function to the device, the proposed measuring device is a load cell that can measure the load or displacement applied to the bridge top plate There is an advantage that the instrument can be installed at all times to measure the upper load.

However, in the conventional measuring instrument, since a single load cell is provided at the center of each bridge bearing, the measurement error rate of the upper load is large, and thus there is a problem of lowering the reliability of the measured value.

In addition, there is a problem that it is difficult to measure the eccentricity of the bridge top plate due to the one installation structure of the load cell.

The present invention is proposed to improve the above problems in the prior art, by providing a plurality of locations for each bridge bearing of the load cell installation position to increase the reliability of the load measurement value, it is possible to accurately determine the eccentricity of the bridge top plate The purpose is to make it possible.

1 is a cross-sectional view of the bridge provided with a measuring device for the subject innovation.

Figure 2 is a plan view of the load cell arrangement state according to an embodiment of the present invention.

3 is a plan view showing a load cell arrangement according to another embodiment of the present invention.

4 is a graph comparing the load measurement state according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: upper plate 2: lower plate

3,4: anchor bolt 5: upper structure

6: substructure 7: rubber plate

9,9 ', 9 ": Load cell

The purpose is that the upper plate and the lower plate is fixed to the bridge upper structure and the lower structure by the anchor bolt, respectively, a rubber plate is inserted into the upper plate and the lower plate connecting surface, the lower plate for measuring the load in contact with the bottom surface of the rubber plate In the bridge support for measurement, the load cell is installed, the lower plate can be achieved through a plurality of load cell structure of the measurement bridge device characterized in that a plurality of load cells are installed.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a bridge structure for measurement according to an embodiment of the present invention, Figure 2 is a plan view showing a load cell arrangement state, Figures 3a and 3b is a load cell arrangement state diagram according to another embodiment, Figure 4 It is a graph to test the reliability of measured load by each load cell installation number.

First, looking at the schematic configuration of the measuring bridge receiving 10 according to the present embodiment, the upper plate 1 is fixed to the upper structure (5) constituting the upper structure (mould) of the bridge by the anchor bolt (3) The lower plate 2 is also fixed to the lower structure 6 that forms the lower structure of the bridge (pier) by the anchor bolt 4, and the upper plate 1 and the lower plate 2 is connected to the rubber plate ( 7) is inserted, and the lower plate 2 is provided with a plurality of load measuring load cells 9 in contact with the bottom surface of the rubber plate (7).

On the other hand, the experimental results for the number and location of the installation of the load cell 9 is shown in a graph in Figure 4, Figure 4 is a load cell measuring the load value applied from the actual top when the number of load cells increased to a plurality The reliability of the measured value is shown, and the result of converting the measured value for each major load into the load is shown in the following [Table 1].

TABLE 1

Applied Load (KN) 1 load cell 2 load cells 3 load cells 4 load cells 0 -72 -69 -66 -62 50 2.1 5.8 11.01 17.05 100 85.8 91.5 99.2 107.6 150 133 139.7 148.9 158.6 200 180.1 187.9 198.5 209.5 250 227.2 236.1 248.2 260.5

As a result of the experiment, it can be seen that the path closest to the exact load graph (Applied Load) in FIG. 4 is when three load cells are shown, which is also shown in [Table 1].

In other words, the measured value closer to the actual applied load was relatively higher in reliability than in the case of one load cell. Particularly, when three load cells were mounted in a state in which a certain load (100) or more was applied, It can be seen that the result closest to the applied load can be obtained.

Therefore, the load cell 9 for load measurement is most preferably inserted into the three load cells (9a, 9b, 9c) on each bridge support in the direction perpendicular to the installation direction of the bridge, as shown in plan view in FIG. It can be seen.

The working effect of the installation of the bridge bearing for measuring the present invention constituting such a configuration will be described.

In the present embodiment, when installing a plurality of load cells 9 in the contact portion of the upper rubber plate 7 of the lower plate 2 as shown in Figure 2 to maintain a constant distance (d) of the three load cells 9a, 9b and 9c are installed, and the load transmitted from the upper structure 5 is measured in each load cell 9a, 9b, and 9c in the state where such a measuring instrument is installed.

Then, the current bridge structure load can be determined based on the average value of the measured values.

In addition, since three load cells 9 are arranged at regular intervals d, it is possible to determine whether the bridge is eccentric by comparing the measured values of the load cells 9a, 9b, and 9c. That is, when the difference between the measured values of the load cells 9a and 9c on both sides of the center load cell 9b exceeds a predetermined reference value, it is determined that the upper structure 5 is in an eccentric state, and the structure can be repaired for the bridge. .

3A and 3B show arrangements when the number of load cells 9 'and 9 "is set to 2 and 4, respectively. In particular, in the case of installing four load cells 9", FIG. It is arranged in a rectangular shape as shown.

Therefore, the multiple load cell structure of the measuring instrument according to the present invention improves the measurement reliability of the upper load and the eccentricity of the bridge compared to the conventional single-cell load cell mounting structure, the rubber plate (7) of the It can be seen that the fluid behavior characteristics can be analyzed.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the measuring instrument installation structure of the present invention may be variously modified and implemented by those skilled in the art.

For example, by connecting and installing a separate transmission means to each of the plurality of load cells installed in the present invention, the measurement value in each load cell is transmitted by wire or wireless, so that the upper load and eccentricity determination may be made in real time.

Therefore, such modified embodiments should not be understood individually from the technical idea or the prospect of the present invention, and such modified embodiments shall fall within the attached utility model registration claims of the present invention.

The present invention as described above, by inserting a plurality of load cells in the measuring bridge support can reduce the error rate for the upper load and determine whether the eccentricity, according to the characteristics of the fluid behavior of the inner rubber plate support The effect can be analyzed.

Claims (2)

The upper plate 1 and the lower plate 2 are fixed to the bridge upper structure 5 and the lower structure 6 by anchor bolts 3 and 4, respectively, and the upper plate 1 and the lower plate 2 are connected to each other. In the bridge support 10 for measurement in which a rubber plate 7 is inserted into the surface, and the load plate 9 for load measurement in contact with the bottom surface of the rubber plate 7 is installed in the lower plate 2, Multiple load cell structure of the measuring instrument device, characterized in that composed of a plurality of load cells (9) installed on the lower plate (2). The method according to claim 1, A plurality of load cells of the measuring instrument device, characterized in that the load cell 9 is installed to insert three on each of the bridge support, to form a predetermined interval (d) between each of the load cells (9a, 9b, 9c). rescue.