KR101953842B1 - Systems and methods for simultaneously lifting structures using quantitative risk analysis - Google Patents

Abstract

Provided are a system and a method for simultaneously lifting a structure using a quantitative risk analysis, comprising: a plurality of hydraulic pressure drivers which are installed at a structure and supplied with hydraulic pressure, thereby being operated so as to elevate the structure; a hydraulic pressure supply device supplying hydraulic pressure to the plurality of hydraulic pressure drivers; a plurality of distance measuring sensors arranged at each of the hydraulic pressure drivers in order to measure the distance the structure has moved; a controller which analyzes a risk of the plurality of hydraulic pressure drivers in real time based on the measurement value received from the plurality of distance measuring sensors, and selects a hydraulic pressure driver of which risk exceeds a reference risk, and controls the hydraulic pressure supply device in order to perform an elevating motion only with respect to the hydraulic pressure driver of which risk exceeds the reference risk.

Description

TECHNICAL FIELD The present invention relates to a system and method for simultaneously lifting structures using quantitative risk analysis,

The present invention relates to a structure simultaneous lifting system and method using quantitative risk analysis.

At a construction site or a manufacturing factory, it is necessary to lift a large structure having a high weight such as a bridge top plate for manufacturing, construction or maintenance. A hydraulic device having a capacity proportional to the weight of the structure is required in order to raise a large structure with a high weight. However, it is difficult to use a high-capacity hydraulic device with a small number of water pipes due to installation constraints and high cost due to the size of the hydraulic device. Therefore, in order to raise a heavy structure, a plurality of hydraulic apparatuses having an appropriate capacity are used to facilitate installation and economical efficiency. However, there is a risk of accidents due to tilting or detaching of the structure if control fails due to an increase in the number of hydraulic devices. Therefore, there is a need for a system and method for integrally controlling a plurality of hydraulic devices to solve such a problem.

KR 10-833686 B1

An object of an embodiment of the present invention is to provide a structure simultaneous lifting system and method capable of measuring the degree of lifting of a structure by using a distance measuring sensor and selecting an optimal lifting point by using quantitative risk analysis to be.

It is another object of the present invention to provide a system and method for simultaneous lifting structure that can supply a stable hydraulic pressure to a plurality of hydraulic actuators using a hydraulic head.

A structure simultaneous lifting system using a quantitative risk analysis according to an embodiment of the present invention includes a plurality of hydraulic actuators installed on a structure and operated to lift the structure by receiving hydraulic pressure, A plurality of distance measurement sensors arranged for each of the hydraulic actuators to measure a distance of movement of the structure and a plurality of distance measuring sensors for measuring a risk of the plurality of hydraulic actuators in real time based on measured values received from the plurality of distance measuring sensors, And a controller for controlling the hydraulic pressure supply device to select only the hydraulic actuator whose risk exceeds the reference risk level and to perform the pulling operation only when the risk exceeds the reference risk level.

In addition, the plurality of distance measuring sensors may include at least two distance measuring sensors as one sensor group, and a sensor group may be arranged for each of the hydraulic actuators.

Also, the controller quantitatively evaluates the measured values received from the plurality of distance measurement sensors through the paired comparison matrix analysis, calculates a risk level for each of the sensor groups, A driver can be selected.

The hydraulic pressure supply device includes a control valve connected to each of the plurality of hydraulic actuators and controlling a hydraulic pressure provided to the hydraulic actuator, a hydraulic header for supplying hydraulic pressure to the plurality of hydraulic actuators through the control valve, And a hydraulic pump for supplying hydraulic pressure to the hydraulic pump.

Also, the controller monitors the pressure of the hydraulic header and controls the hydraulic pump and the control valve to maintain the pressure in the hydraulic header at a predetermined value, and only the hydraulic actuator whose risk exceeds the reference risk level performs the pulling operation The hydraulic pump and the control valve can be controlled.

The simultaneous lifting method using the quantitative risk analysis according to an embodiment of the present invention may be performed simultaneously with the simultaneous lifting step of lifting the structure simultaneously using a plurality of hydraulic drivers installed on the structure, A plurality of distance measuring sensors arranged for each of the hydraulic actuators to measure a moving distance of the structure in real time; a controller for controlling the plurality of hydraulic pressure sensors based on measured values received from the plurality of distance measuring sensors, A risk judgment step of analyzing a risk of a driver and selecting a hydraulic actuator whose risk level exceeds a reference risk level, and a controller for controlling the hydraulic pressure supply device such that only the hydraulic driver whose risk exceeds the reference risk level performs the pull- Individual impression steps may be included.

Also, the plurality of distance measuring sensors may include at least two distance measuring sensors forming a sensor group, and a sensor group may be disposed for each of the hydraulic actuators, and the risk determining step may include: A risk analysis step of evaluating the received measurement value quantitatively through a paired comparison matrix analysis, a risk analysis step of calculating a risk level for each sensor group, and a controller comparing the risk of each of the sensor groups with a reference risk, And a risk comparison step of selecting a hydraulic driver in which a sensor group having a risk of being disposed is arranged.

The risk may be calculated by quantitatively evaluating the measured values received from the plurality of distance measurement sensors by the controller through a pair comparison matrix analysis and summing weights of the distance measurement sensors belonging to the sensor group have.

In addition, the simultaneous lifting step and the individual lifting step may include: stopping the simultaneous lifting step when the risk of any one of the sensor groups exceeds the reference risk during the simultaneous lifting step, based on the control of the controller, And when the risk of the sensor group disposed in the hydraulic actuator being operated in the individual pull-up operation during the individual pull-up step is lower than the reference risk, the individual pull-up step may be stopped and the simultaneous pull-up step may be performed.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to an embodiment of the present invention, the extent to which a structure is pulled up using a distance measuring sensor is measured, an optimal point of increase is selected using a quantitative risk analysis, and a hydraulic co- can do.

An object of an embodiment of the present invention is to provide a hydraulic lifting device capable of supplying a stable hydraulic pressure to a plurality of hydraulic actuators by using a hydraulic head so that each structure constituting the structure simultaneous lifting system can be simplified, It can be convenient.

FIG. 1 is a block diagram of a structure simultaneous lifting system using quantitative risk analysis according to an embodiment of the present invention. Referring to FIG.
2 illustrates a hydraulic actuator and a sensor group according to an embodiment of the present invention.
3 is a view showing a case where an unbalance occurs in pulling up a structure according to an embodiment of the present invention.
4 is a view illustrating a hydraulic pressure supply apparatus according to an embodiment of the present invention.
FIG. 5 is a flowchart illustrating respective steps of a structure simultaneous raise method using a quantitative risk analysis according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objects, particular advantages and novel features of one embodiment of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings and the preferred embodiments thereof. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Also, the terms "one side," " first, "" first," " second, "and the like are used to distinguish one element from another, no. In this specification, the expression of lifting a structure means lifting the structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the present invention, a detailed description of known arts which may unnecessarily obscure the gist of an embodiment of the present invention will be omitted.

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

FIG. 1 is a block diagram of a structure simultaneous lifting system using quantitative risk analysis according to an embodiment of the present invention. Referring to FIG.

1, a structure simultaneous lifting system using a quantitative risk analysis according to an embodiment of the present invention includes a structure lifting unit 220 installed in a structure 2 and driven by a hydraulic pressure to elevate the structure 2, A hydraulic pressure supply device 30 for supplying hydraulic pressure to the plurality of hydraulic actuators 10 and a plurality of hydraulic pressure control devices 30 arranged for each hydraulic drive device 10 for measuring a distance of movement of the structure 2, (10) in real time based on measured values received from the distance measurement sensor (20) and the plurality of distance measurement sensors (20), and the hydraulic pressure controller And a controller 40 for selecting the driver 10 and controlling the hydraulic pressure supply device 30 so that only the hydraulic driver 10 whose risk exceeds the reference risk level performs the pulling operation.

The structure 2 refers to an object having a high weight and a large volume, and may include, for example, an upper plate of a bridge or various reinforced concrete structures. For example, the bridge is composed of a lower structure for supporting the upper plate and the upper plate, and it is necessary to lift the upper plate in order to replace the cushion and the like installed at the portion connecting the lower structure and the upper plate. At this time, the structure simultaneous lifting system using the quantitative risk analysis according to an embodiment of the present invention can be used. At this time, the structure 2 is the upper plate of the bridge, and the ground 1 may be the lower structure of the bridge supporting the hydraulic actuator 10. [

The hydraulic actuator 10 is a device for pulling up an object by receiving hydraulic pressure, and includes a hydraulic jack, a hydraulic cylinder, and the like. The hydraulic actuator 10 is installed between the ground 1 and the structure 2 and the hydraulic actuator 10 is operated to lift the structure 2. A plurality of hydraulic actuators 10 may be installed depending on the weight and volume of the structure 2. [ The hydraulic actuator 10 can select the capacity according to the weight to be lifted. FIG. 1 shows an example in which four hydraulic actuators 10 are installed.

The hydraulic pressure supply device 30 is a device for supplying the hydraulic pressure to the hydraulic actuator 10. [ The hydraulic pressure supply device 30 may simultaneously supply the hydraulic pressure to the plurality of hydraulic drivers 10 and may supply the hydraulic pressure to only one of the hydraulic drivers 10 under the control of the controller 40. [ The hydraulic pressure supply device 30 may provide the pressure value of the hydraulic pressure supply device 30 to the controller 40. Two hydraulic pressure supply devices 30 for supplying hydraulic pressure to the ten hydraulic pressure actuators 10 may be used if the number of the hydraulic pressure actuators 10 is twenty. In Fig. 1, a line through which the hydraulic pressure supply device 30 transmits hydraulic pressure to the hydraulic actuator 10 is indicated by a solid line.

The distance measuring sensor 20 is disposed for each hydraulic actuator 10 to measure the distance the structure 2 has moved. The distance measuring sensor 20 can be installed adjacent to the hydraulic actuator 10 and the distance D at which the structure 2 has moved shows the degree to which the structure 2 is lifted at the original position of the structure 2 . The distance measuring sensor 20 may include various distance measuring sensors such as an infrared (IR) sensor, a laser sensor, a ToF sensor, and an analog or digital sensor. In Fig. 1, a line through which the controller 40 receives the measurement value and outputs the control signal is indicated by a dotted line.

2 is a diagram showing a hydraulic actuator 10 and a sensor group G according to an embodiment of the present invention. 2, the structure 2 is indicated by a one-dot chain line, and the line through which the distance measurement sensor 20 transmits the measured value to the controller 40 is indicated by a dotted line.

As shown in FIG. 2, at least one distance measuring sensor 20 may be provided for each of the hydraulic actuators 10. The distance measuring sensor 20 may be arranged in a matrix composed of rows and columns. The distance measuring sensor 20 may be spaced apart from the hydraulic actuator 10 by a predetermined angle. For example, as shown in FIG. 2, four distance measuring sensors 20 may be installed at 90 ° intervals in one hydraulic actuator 10. Alternatively, three distance measuring sensors 20 may be installed in the hydraulic actuator 10 at intervals of 120 degrees.

A plurality of distance measurement sensors 20 arranged adjacent to the hydraulic actuator 10 are arranged to detect the degree of pulling of the structure 2 at a plurality of positions around the hydraulic actuator 10 (i.e., the moving distance D of the structure) Can be measured. Therefore, the inclination of the structure 2 can be measured by comparing the measured values of the plurality of distance measuring sensors 20 arranged around the hydraulic actuator 10. When a malfunction occurs in any of the distance measuring sensors 20, it is possible to compare the measured values of the adjacent distance measuring sensors 20 and to determine that the distance measuring sensor 20, which has a large deviation of the measured values, It can be recognized.

The plurality of distance measuring sensors 20 may include at least two distance measuring sensors 20 as a single sensor group G and a sensor group G for each of the hydraulic actuators 10. As shown in FIG. 2, the first sensor group G1 includes a first distance measurement sensor 20a, a second distance measurement sensor 20b, a third distance measurement sensor 20c, a fourth distance measurement sensor 20d And the second sensor group G2 may include a fifth distance measuring sensor 20e, a sixth distance measuring sensor 20f, a seventh distance measuring sensor 20g, an eighth distance measuring sensor 20h, . ≪ / RTI > The first sensor group G1 may be disposed in the first hydraulic actuator 10a and the second sensor group G2 may be disposed in the second hydraulic actuator 10b.

An embodiment of the present invention can be realized by arranging the sensor group G on the basis of the hydraulic actuator 10 and integrating the measured values of the distance measurement sensor 20 included in the sensor group G in units of the sensor group G The risk of the hydraulic actuator 10 corresponding to the sensor group G can be comprehensively evaluated as compared with the case where only one distance measuring sensor 20 is disposed for each hydraulic actuator 10. [

The controller 40 includes an information processing apparatus such as a PC, a notebook computer, a smart phone, etc. and includes an information processing apparatus designed to receive input of the distance measuring sensor 20 and control the hydraulic supply apparatus 30 do. The controller 40 receives an input from the user and receives an input from the distance measuring sensor 20 and the pressure gauge 35 to receive data. The pressure value of each component included in the hydraulic pressure supplying device 30 and the distance measuring sensor A processor for calculating a risk and generating a control signal using a pair of comparison matrices, a processor for displaying a measured value and a calculated risk, A signal output unit for controlling the respective components included in the controller 40, and a storage unit for storing program codes or data necessary for driving the controller 40. [

3 is a view showing a case where an unbalance occurs when the structure 2 is pulled up according to the embodiment of the present invention.

As shown in FIG. 3, when the structure 2 is pulled up, a difference may occur in the degree to which the structure 2 is pulled up due to the difference in load of each part of the structure 2. [ For example, when the load at the first point is W1 and the load at the second point is W2, the moving distance D2 at the second point may be lower than the moving distance D1 at the first point because W1 <W2. If such an imbalance accumulates and exceeds the limit, the structure 2 may be tilted and broken, or an accident such as the structure 2 may deviate from its normal position may occur.

In order to prevent such an accident, the controller 40 analyzes the risk of the plurality of hydraulic actuators 10 in real time based on the measured values received from the plurality of distance measuring sensors 20. The risk level is a value that quantitatively indicates the degree of vulnerability by relatively comparing the fragility of the point where the hydraulic actuator 10 is located in the structure 2 with the points where the other hydraulic drivers 10 are located. The controller 40 quantitatively evaluates the measurement values received from the plurality of distance measurement sensors 20 through a pair of comparison matrix analysis and calculates a risk value for each of the sensor groups G . The content of the pair comparison matrix analyzing unit 41 for calculating the risk will be described later.

The controller 40 can control the hydraulic pressure supply device 30 to elevate the structure 2 simultaneously using a plurality of hydraulic drivers 10 installed on the structure 2. [ Further, the controller 40 selects the hydraulic driver 10 whose risk level exceeds the reference risk level, and controls the hydraulic pressure supply device 30 so that only the hydraulic driver 10 whose risk exceeds the reference risk level performs the lifting operation .

4 is a view showing a hydraulic pressure supply device 30 according to an embodiment of the present invention.

4, the hydraulic pressure supply device 30 includes a control valve 31 connected to each of the plurality of hydraulic actuators 10 to control the hydraulic pressure supplied to the hydraulic actuator 10, a control valve 31 A hydraulic header 32 that provides hydraulic pressure to a plurality of hydraulic actuators 10, and a hydraulic pump 33 that provides hydraulic pressure to the hydraulic headers 32. The hydraulic pressure supply device 30 may further include a pressure gauge 35 for measuring the pressure inside the hydraulic header 32 and transmitting the pressure to the controller 40 and a hydraulic tank 34 for supplying oil to the hydraulic pump 33 have. The hydraulic supply device 30 may include a plurality of hydraulic headers 32 and a plurality of hydraulic pumps 33.

The control valve 31 can control the hydraulic pressure supplied to the hydraulic actuator 10 from the hydraulic header 32 in accordance with the valve control signal received from the controller 40. [ The control valve 31 uses a solenoid valve or the like, and various other types of valves can be used. The control valve 31 is provided for each hydraulic actuator 10 and a plurality of control valves 31a, 31b, 31c and 31d connected to one hydraulic header 32 can be individually controlled.

The hydraulic header 32 is supplied with the hydraulic pressure from the hydraulic pump 33 and can supply the same pressure to the plurality of hydraulic drivers 10 through the control valve 31. An embodiment of the present invention can supply the hydraulic pressure supplied by the hydraulic pump 33 to the plurality of hydraulic actuators 10 by applying the hydraulic header 32 so that the hydraulic pump 33 is installed for each of the hydraulic actuators 10 There is an advantage to not have.

The hydraulic pump 33 supplies the hydraulic pressure to the hydraulic header 32 using the oil in the hydraulic tank 34. The hydraulic pump 33 can control the hydraulic pressure supplied to the hydraulic tank 34 in accordance with the pump control signal received from the controller 40. [

The controller 40 receives the pressure inside the hydraulic header 32 from the pressure gauge 35 connected to the hydraulic header 32 and receives the pressure in the hydraulic header 32 and the control valve 31 to maintain the pressure inside the hydraulic header 32 at the set pressure. So that the hydraulic pump 33 can be controlled. The controller 40 operates the hydraulic pump 33 when the pressure inside the hydraulic header 32 is lower than the set pressure and controls the operation of the hydraulic pump 33 when the pressure inside the hydraulic header 32 is higher than the set pressure It is possible to control so that it stops. The controller 40 may control to open only the arbitrary control valve 31 and shut off the other control valves 31 to supply the hydraulic pressure to any of the control valves 31 only.

Hereinafter, the quantitative risk analysis by the dual comparison matrix analysis according to an embodiment of the present invention will be described.

Pairwise comparison matrix analysis is a method of quantitatively calculating relative weights for the remaining objects of each object by comparing a plurality of objects relative to each other. In an embodiment of the present invention, the object of the paired comparison matrix analysis is each of the distance measuring sensors 20 disposed adjacent to the hydraulic actuator 10, and based on the measured values measured by the distance measuring sensor 20, It is possible to calculate a relative weight of the distance measuring sensor 20 with respect to the remaining distance measuring sensors 20. [

The pairwise comparison matrix is a square matrix having the same number of rows (i) and the same number of columns (j), with a diagonal value of 1 and a relation of a _ij = 1 / a _ji about the diagonal. In order to generate a pair of comparison matrices, the controller 40 may receive measurements measured by a plurality of distance measurement sensors 20 as shown in Table 1 below. Hereinafter, a case where three distance measuring sensors 20 are arranged in the four hydraulic actuators 10 so as to form the sensor group G will be described as an example. The first sensor group G1 is disposed in the first hydraulic actuator 10a and the first distance measurement sensor No.1 and the second distance measurement sensor No.2 are provided in the first sensor group G1. , And a third distance measuring sensor (No. 3).

Sensor group (G) Distance measuring sensor number Target Elevation Height - Measured Value The first sensor group G1, No.1 a No.2 b No.3 c In the second sensor group G2, No.4 d No.5 e No.6 f The third sensor group G3, No.7 g No.8 h No.9 i The fourth sensor group (G4) No.10 j No.11 k No.12 l

In Table 1, the measured value is the distance that the structure 2 has moved. If the moving distance of the arbitrary point of the structure 2 is smaller than the other points, the corresponding portion is in a dangerous state. Therefore, The value obtained by subtracting the value can be used as basic data of the paired comparison matrix analysis.

The pair comparison matrix analyzing section 41 of the controller 40 performs a step of generating a pair of comparison matrices based on the measured values of each of the distance measuring sensors 20 received from the distance measuring sensor 20. [ For example, Table 2 shows that a pair of comparison matrices are generated based on Table 1. Since the distance measurement sensors 20 to be compared are 12 (No.1 to No.12), the pair comparison matrix shown in Table 2 is expressed by a square matrix of 12 rows and 12 columns.

No.1 No.2 No.3 No.4 No.5 No.6 No.7 No.8 No.9 No.10 No.11 No.12 No.1 a / a a / b a / c a / d a / e a / f a / g a / h a / i a / j a / k a / l No.2 b / a b / b b / c b / d b / e b / f b / g b / h b / i b / j b / k b / l No.3 c / a c / b c / c CD c / e c / f c / g c / h c / i c / j c / k c / l No.4 d / a d / b d / c d / d d / e d / f d / g d / h d / i d / j d / k d / l No.5 e / a e / b e / c e / d e / e e / f e / g e / h e / i e / j e / k e / l No.6 f / a f / b f / c f / d f / e f / f f / g f / h f / i f / j f / k f / l No.7 g / a g / b g / c g / d g / e g / f g / g g / h g / i g / j g / k g / l No.8 h / a h / b h / c j / d h / e h / f h / g h / h h / i h / j h / k h / l No.9 i / a i / b i / c i / d i / e i / f i / g i / h i / i i / j i / k i / l No.10 j / a j / b j / c j / d j / e j / f j / g j / h j / i j / j j / k j / l No.11 k / a k / b k / c k / d k / e k / f k / g k / h k / i k / j k / k k / l No.12 l / a l / b l / c l / d l / e l / f l / g l / h l / i l / j l / k l / l

The pair comparison matrix analyzer 41 of the controller 40 applies the digenvalue method to the pair of comparison matrices so that the remaining distance measurement sensor 20 of each distance measurement sensor 20 calculates Lt; / RTI &gt; If the pairwise comparison matrix is A, solving the n-th order equation A · w = λ · w yields n λ, and the column vector w corresponding to the largest λ _max is obtained for the remaining objects of each object It becomes a relative weight. For example, the weights calculated based on the pair comparison matrix of Table 2 can be expressed as shown in Table 3.

Sensor group (G) Distance sensor (20) weight Risk per Sensor Group The first sensor group G1, No.1 w1 w1 + w2 + w3 No.2 w2 No.3 w3 In the second sensor group G2, No.4 w4 w4 + w5 + w6 No.5 w5 No.6 w6 The third sensor group G3, No.7 w7 w7 + w8 + w9 No.8 w8 No.9 w9 The fourth sensor group (G4) No.10 w10 w10 + w11 + w12 No.11 w11 No.12 w12

The weight wn is calculated for each distance measuring sensor 20 and the sum of the weights w1 + w2 + ... + wn of each distance measuring sensor 20 is 1 and can be expressed as a percentage Number). The weights calculated through the above process are values obtained by quantitatively comparing the relative sizes of the measured values measured by the distance measuring sensors 20 with the measured values measured by the remaining distance measuring sensors 20. [ The measurement data measured by the distance measuring sensor 20 is the moving distance of the structure 2 and the basic data of the pair comparison matrix analysis is the distance that the structure 2 must be further moved to reach the target lifting height The structure 2 at the point where the distance measuring sensor 20 having a high weight is located moves the least amount of time and can be regarded as the most dangerous point.

When the imbalance of the pulling occurs due to the structure of the structure itself or the distribution of the load, the structure (2) having a large volume and mass may cause warping or warping, and the distance measuring sensor (20) located at the point accurately reflects the height It can be difficult. Incidentally, an error may occur in the measured value due to a wrong installation of the distance measuring sensor 20 or a deviation between the sensors. Therefore, when only one distance measuring sensor 20 is disposed in one hydraulic actuator 10, it is difficult to accurately evaluate the moving distance of the structure 2 at the position where the hydraulic actuator 10 is disposed. Even if a plurality of distance measuring sensors 20 are arranged in the hydraulic actuator 10, if the distance measuring sensors 20 are evaluated separately, the moving distance of the structure 2 at the position where the hydraulic actuator 10 is disposed It is difficult to evaluate accurately. Therefore, it is difficult for the hydraulic actuator 10 at the weakest point of the structure 2 to be appropriately selected as an object of individual impression.

In an embodiment of the present invention, it is possible to determine whether the individual distance measurement sensor 20 is individually raised on the basis of the risk of summing the weights of the individual distance measurement sensors 20 in units of the sensor group (G). When the weight of the individual distance measuring sensor 20 is compared with the reference risk, an error may be caused that the hydraulic actuator 10 requiring the individual pull-up is erroneously selected. If the risk is determined in units of the sensor group G, Errors can be prevented. Since the distance measuring sensor 20 of the sensor group G is arranged to surround the hydraulic actuator 10 and the weight of the individual distance measuring sensor 20 is a value relative to the remaining distance measuring sensors 20, , The risk can be accurately evaluated by accurately estimating the moving distance of the structure 2 at the position where the hydraulic actuator 10 is located. Therefore, it is possible to properly select the hydraulic actuator 10 that requires individual pull-up.

FIG. 5 is a flowchart illustrating respective steps of a structure simultaneous raise method using a quantitative risk analysis according to an embodiment of the present invention.

A method for simultaneously lifting a structure using a quantitative risk analysis according to an embodiment of the present invention includes a step (S10) of setting a target lifting height by receiving a target lifting height from a user by the controller (40) (Step S20) of setting the position of the current structure 2 as an origin by operating the distance measuring sensor 20. The controller 40 receives an impression start to start the pulling of the structure 2 from the user, (Step S30). The origin setting step S20 may be performed after the step S30 of starting the pulling up of the structure 2 is performed.

A simultaneous lifting method using a quantitative risk analysis according to an embodiment of the present invention includes a simultaneous lifting step S40 for simultaneously lifting a structure 2 using a plurality of hydraulic actuators 10 installed on a structure 2, A measurement step (S50) in which a plurality of distance measuring sensors (20) arranged in parallel with the simultaneous lifting step and arranged for each of the hydraulic actuators (10) measure the moving distance of the structure (2) ) Analyzes the risk of the plurality of hydraulic actuators (10) in real time based on measured values received from the plurality of distance measuring sensors (20) and determines the risk of selecting the hydraulic actuator (10) whose risk exceeds the reference risk Step S60 and a separate lifting step S70 in which the controller 40 controls the hydraulic supply 30 so that only the hydraulic driver 10 whose risk exceeds the reference risk level performs the lifting operation.

When the lifting of the structure 2 is started based on the user's input (S30), the simultaneous lifting step S40 and the distance measuring step S50 can be started together in parallel. The distance measuring step S50 may be repeatedly performed until the lifting of the structure 2 is completed. In the simultaneous lifting step S40, the controller 40 transmits a control signal to the hydraulic pump 33 and the control valve 31 included in the hydraulic pressure supply device 30 so that the plurality of hydraulic drivers 10 operate simultaneously . The hydraulic pump 33 supplies the hydraulic pressure to the hydraulic header 32 in accordance with the pump control signal and the control valve 31 is opened to supply the hydraulic pressure from the hydraulic header 32 to the hydraulic actuator 10 in accordance with the valve control signal. So that the plurality of hydraulic actuators 10 simultaneously operate to lift the structure 2 at the same time.

The structure 2 is lifted by the hydraulic actuator 10 during the simultaneous lifting step S40 and the distance measuring step S50 is performed together to measure the moving distance of the structure 2 with respect to the origin, (40). In the distance measurement step S50, the controller 40 may perform an operation of requesting the distance measurement sensor 20 and receiving a measurement value. The distance measuring step S50 may be repeatedly performed at predetermined intervals.

The controller 40 receives the measurement values transmitted from the plurality of distance measurement sensors 20 and performs a risk determination step S60. In the risk determination step S60, the controller 40 quantitatively evaluates the measurement values received from the plurality of distance measurement sensors 20 through the paired comparison matrix analysis, and calculates a risk value for each of the sensor groups G The risk analysis step S60 and the controller 40 compares the risk of each of the sensor groups G with the reference risk to determine whether the sensor group G having the risk exceeding the reference risk is disposed 10) for determining the risk level (step S62).

The risk analysis step S60 may be repeatedly performed together with the distance measurement step S50. The risk analysis step S60 may be performed in the dual comparison matrix analysis unit 41 of the controller 40. [ In the risk analysis step S60, the risk is evaluated by quantitatively evaluating the measurement values received from the plurality of distance measurement sensors 20 by the controller 40 through the paired comparison matrix analysis, (20).

The risk comparison step S62 may be repeatedly performed together with the risk analysis step S60. In the risk comparison step S62, the controller 40 compares the risk per each sensor group G calculated in the risk analysis step S60 with the reference risk. The reference risk can be set to a value at which the imbalance of the structure 2 does not cause an accident. When the risk of any one of the sensor groups (G) exceeds the reference risk, the controller (40) selects the hydraulic driver (10) in which the sensor group (G) having a risk exceeding the reference risk is disposed. The selected hydraulic actuator 10 is evaluated as a hydraulic actuator 10 requiring an additional impression in preference to the other hydraulic actuator 10.

The controller 40 may perform a risk comparison step S62 and then act to perform the distance measurement step S50 again regardless of whether there is a sensor group G with a risk that exceeds the reference risk .

When the hydraulic driver 10 is selected in the risk comparison step S62, the controller 40 performs the individual impression control to control the hydraulic pressure supply device 30 so that only the hydraulic driver 10 whose risk exceeds the reference risk level performs the pull- Step S70 may be performed. In the individual pulling-up step S70, the controller 40 controls the control valve 31 and the hydraulic pump 33 of the hydraulic pressure supply device 30 so as to supply the hydraulic pressure to only the selected hydraulic drive 10. [ For example, the controller 40 outputs a valve control signal to open the control valve 31 connected to the selected hydraulic actuator 10 and block the remaining control valve 31, It is possible to output the pump control signal so as to supply the oil pressure enough to operate only the hydraulic actuator 10.

The above-described distance measurement step S50, the risk analysis step S61, and the risk comparison step S62 may be repeatedly performed together while the individual impression step S70 is performed. The individual lift-up step S70 is performed and the risk of the point is reduced when the structure 2 at the point where the selected hydraulic actuator 10 is disposed rises. If the risk of the sensor group G disposed on the individual driven hydraulic actuators 10 is sufficiently reduced, the simultaneous lifting step S40 may be performed again. In summary, the simultaneous lifting step S40 and the individual lifting step S70 are carried out in such a manner that the risk of any one of the sensor groups G during the simultaneous lifting step S40, based on the control of the controller 40, (S70) is performed and the sensor group (G) disposed in the hydraulic actuator (10) during the individual pull-up operation during the individual pull-up step (S70) The individual impression step S70 is stopped and the concurrent impression step S40 is performed.

On the other hand, when the lifting of the structure 2 is started (S30), the controller 40 determines whether the distance traveled by the structure 2 has reached the target lifting height, based on the measured value measured in the distance measuring step S50 (S80). If the distance traveled by the structure 2 does not reach the target lifting height, the operation S80 is performed to periodically compare the target lifting height with the measured value received from the distance measuring sensor 20, When the distance traveled by the structure 2 reaches the target lifting height, the lifting of the structure 2 is terminated (S90).

The simultaneous lifting system and method using the quantitative risk analysis according to an embodiment of the present invention described above can calculate the weight of the measurement value of an arbitrary distance measurement sensor 20 by using a pair of comparison matrix analysis, And the sum of the weights of the distance measuring sensors 20 included in each sensor group G is calculated to calculate the overall risk of the sensor group G. Therefore, Compared with a method in which a distance measurement sensor 20 is used for each of the plurality of distance measurement sensors 10 or a plurality of distance measurement sensors 20 which are not grouped are used to simply use the lowest value or average value of the measurement values, The vulnerability that can be quantified by the risk that it has can be accurately assessed.

In addition, the simultaneous lifting system and method using the quantitative risk analysis according to an embodiment of the present invention can be applied to the simultaneous lifting of the plurality of hydraulic actuators 10 and the simultaneous lifting of the individual hydraulic actuators 10 Since the individual impression to operate can be automatically performed as needed, it provides an automated and reliable structure simultaneous impression method.

The simultaneous lifting system and method using the quantitative risk analysis according to an embodiment of the present invention may be configured such that a single hydraulic pump 33 supplies hydraulic pressure to a plurality of hydraulic actuators 10 using a hydraulic header 32 And is constructed in a unit of a module composed of a hydraulic pump 33, a hydraulic header 32, an appropriate number of control valves 31 and a hydraulic actuator 10 in accordance with the volume and load of the structure 2, Provides simultaneous impression method for expandable structures.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification and the modification are possible.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Ground
2: Structure
10: Hydraulic actuator
20: Distance measuring sensor
G: Sensor group
30: Hydraulic feeder
31: Control valve
32: Hydraulic headers
33: Hydraulic pump
34: Hydraulic tank
35: Manometer
40:
41: pair comparison matrix analyzing unit

Claims (9)

A plurality of hydraulic actuators installed on the structure and operated to lift the structure by receiving hydraulic pressure;
A hydraulic pressure supply device for supplying hydraulic pressure to the plurality of hydraulic actuators;
A plurality of distance measuring sensors arranged for each of the hydraulic actuators and measuring a distance the structure moves; And
A plurality of distance measuring sensors for analyzing the risk of the plurality of hydraulic actuators in real time based on measured values received from the plurality of distance measuring sensors and selecting a hydraulic actuator whose risk exceeds a reference risk, And a controller for controlling the hydraulic pressure supply device so as to perform only the lifting operation,
The plurality of distance measuring sensors
At least two distance measuring sensors constitute one sensor group, a sensor group is arranged for each of the hydraulic actuators,
The controller
Calculating a risk value for each of the sensor groups and selecting a hydraulic actuator in which the sensor group having a risk exceeding a reference risk level is disposed, by quantitatively evaluating measurement values received from the plurality of distance measurement sensors through a pair comparison matrix analysis, Structure Simultaneous Impression System Using Quantitative Risk Analysis. delete delete The method according to claim 1,
The hydraulic pressure supply device
A control valve connected to each of the plurality of hydraulic actuators to control a hydraulic pressure supplied to the hydraulic actuator;
A hydraulic header for supplying hydraulic pressure to the plurality of hydraulic actuators through the control valve; And
And a hydraulic pump that provides hydraulic pressure to the hydraulic headers. The method of claim 4,
The controller
Controls the hydraulic pump and the control valve so as to monitor the pressure of the hydraulic header and maintain the pressure in the hydraulic header at a predetermined value, and to control the hydraulic pump and the control valve so that only the hydraulic actuator, Simultaneous lifting system using quantitative risk analysis to control valves. Simultaneously elevating the structure using a plurality of hydraulic actuators installed on the structure;
A measuring step of measuring a moving distance of the structure in real time by a plurality of distance measuring sensors arranged in parallel with the simultaneous lifting step and arranged for each of the hydraulic actuators;
A risk determination step of analyzing a risk of the plurality of hydraulic actuators in real time based on measured values received from the plurality of distance measurement sensors by the controller and selecting the hydraulic actuators whose risk exceeds the reference risk; And
Wherein the controller comprises a separate lifting step of controlling the hydraulic supply to cause only the hydraulic actuators whose risk exceeds the reference risk to perform lifting operations,
The plurality of distance measuring sensors
At least two distance measuring sensors constitute one sensor group, a sensor group is arranged for each of the hydraulic actuators,
The risk determination step
A risk analysis step of quantitatively evaluating measurement values received from the plurality of distance measurement sensors through a pair comparison matrix analysis by the controller and calculating a risk level for each sensor group; And
And a risk comparison step of the controller comparing the risk of each of the sensor groups with the reference risk to select a hydraulic actuator in which the sensor group having a risk exceeding the reference risk is disposed, Way. delete The method of claim 6,
The risk
A quantitative risk analysis is performed by a controller that quantitatively evaluates measurement values received from the plurality of distance measurement sensors through a paired comparison matrix analysis and adds the weights of the respective distance measurement sensors belonging to the sensor group Simultaneous lifting of structures. The method of claim 6,
The simultaneous lifting step and the individual lifting step
Wherein, when the risk of any one of the sensor groups exceeds the reference risk during the simultaneous impression step, the simultaneous impression step is stopped and the individual impression step is performed, Wherein the individual impression step is stopped and the simultaneous impression step is performed when the risk of a sensor group disposed in an operating hydraulic actuator becomes smaller than a reference risk.

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