Displacement measuring device

Abstract

To understand the displacement of a moving object moving on a rail in real time.SOLUTION: A slide displacement measuring device detects the displacement of a moving object moving along a rail with respect to the rail. The slide displacement measuring device includes: input units that are provided at least on the front side and rear side of the moving body in the traveling direction and receive an actual measurement value obtained by a lateral distance measuring instrument that measures a separation distance from the rail in a direction perpendicular to the traveling direction; an arithmetic processing unit that performs arithmetic processing based on information received by the input units; and an output unit that outputs information processed by the arithmetic processing unit. The arithmetic processing unit includes a horizontal displacement detection unit that calculates a horizontal displacement based on the actual measurement value received by the input units.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to a measuring device for detecting the displacement of a moving body moving along a rail with respect to the rail. displacement

Background Art

[0002] For example, when constructing the roof of a large-space structure such as a gymnasium or a factory, a slide construction method as disclosed in Patent Document 1 may be employed.

[0003] In Patent Document 1, a scaffold is assembled near the gable wall portion on one side of a previously constructed frame, and using this scaffold, a steel truss constituting the roof is assembled in one unit. Next, the assembled steel truss is slid along a pair of rails extending in the girder direction provided on the frame by one unit width toward the gable wall portion on the other side. After that, the subsequent steel truss is assembled in one unit using the same scaffold. This is added to the preceding steel unit and is also slid along the pair of rails by one unit width toward the gable wall portion on the other side. Such operations are repeated to construct a steel roof on the frame.

[0004] According to the above construction method, all of the plurality of steel trusses can be assembled using a scaffold provided near the gable wall portion on one side of the frame. Therefore, it becomes possible to perform the assembly work of the steel units in a space-saving manner, and at the same time as the construction method of the steel roof, it is also possible to simultaneously construct the work under the roof using the space inside the frame.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] ​In sliding construction methods like the one described in Patent Document 1, the amount of movement (movement speed) of the steel truss is continuously measured while it is being slid, and the sliding device is automatically controlled so that the amount of movement is the same on a pair of rails. However, "positional deviations" of the steel truss in the direction perpendicular to the rails are often detected by visual inspection by a supervisor.

[0007] Therefore, in roof construction using the sliding method, the number of on-site workers must be increased due to the need to deploy supervisors. Furthermore, the central control room that controls the sliding device cannot detect the aforementioned "positional displacement" in the steel truss until it receives a report from the supervisor, resulting in various challenges in terms of work efficiency, quality, and safety. In addition, the steel units supported by a pair of rails repeatedly expand and contract in the direction perpendicular to the direction of travel due to temperature changes, but there is no established means to grasp the amount of expansion and contraction caused by this phenomenon.

[0008] This system was developed in light of these challenges, and its main purpose is to grasp the displacement of a moving object on rails in real time. [Means for solving the problem]

[0009] To achieve this objective, the present invention displacement The measuring device is along the rail. slide The moving body relative to the rail Horizontal in the direction perpendicular to the direction of travel Detecting displacement displacement A measuring device comprising: an input unit that receives measured values ​​obtained by a lateral distance measuring instrument provided on at least the front and rear sides of the moving body in the direction of travel and measuring the distance from the rail in the direction perpendicular to the direction of travel; and an arithmetic processing unit that performs calculation processing based on the information received by the input unit. The aforementioned It includes an output unit that outputs information processed by the arithmetic processing unit, and the arithmetic processing unit, based on the measured values ​​received by the input unit, The aforementioned It is characterized by having a horizontal displacement detection unit that calculates horizontal displacement.

[0010] This invention displacementThe measuring device is characterized in that the input unit receives measured values ​​acquired by a pair of lateral distance measuring instruments provided on the front and rear sides of the moving body in the direction of travel, and the calculation processing unit includes an expansion / contraction amount detection unit that calculates the amount of expansion / contraction in the direction perpendicular to the direction of travel for the front and rear sides of the moving body based on the measured values ​​received by the input unit.

[0011] This invention displacement According to the measuring device, it is possible to manage the horizontal displacement of a moving object in the direction perpendicular to its direction of travel in real time, based on actual measurements obtained from lateral distance measuring devices that measure the distance between the moving object and the rail in the direction perpendicular to its direction of travel, on the front and rear sides of the moving object in the direction of travel.

[0012] Furthermore, by arranging lateral distance measuring devices, which are installed at least on the front and rear sides of the moving body in the direction of travel, in pairs with a gap perpendicular to the direction of travel, the amount of expansion and contraction of the moving body in the direction perpendicular to the direction of travel can be measured at at least two locations, the front and rear sides, based on these measured values. This makes it possible to grasp in real time the state in which the moving body expands or contracts in the direction perpendicular to the direction of travel due to temperature changes.

[0013] The above displacement By employing a measuring device in roof construction using the sliding method, the blocks constituting the roof structure, which slide along rails installed on the substructure, can be constantly monitored. This eliminates the need to deploy monitors to observe the block behavior, thereby reducing manpower and labor.

[0014] Furthermore, the horizontal displacement in the direction perpendicular to the movement of the sliding block can be constantly monitored in a central control room that controls the sliding device that moves the block, and any abnormalities can be quickly addressed.

[0015] Furthermore, it becomes possible to grasp in real time the amount of expansion or contraction of blocks in the direction perpendicular to the direction of travel due to temperature changes, and to incorporate this information into the construction process.

Advantages of the Invention

[0016] According to the present invention, based on the measured values obtained from the side distance measuring devices provided on the front side and the rear side in the traveling direction of the moving body moving on the rail, which measure the separation distance in the direction perpendicular to the traveling direction from the rail, it becomes possible to accurately and efficiently grasp the displacement generated in the moving body moving on the rail.

Brief Description of the Drawings

[0017] [Figure 1] It is a diagram showing the roof of a large space structure in an embodiment of the present invention. [Figure 2] It is a diagram showing an outline of roof construction by a slide method in an embodiment of the present invention (Part 1). [Figure 3] It is a diagram showing an outline of roof construction by a slide method in an embodiment of the present invention (Part 2). [Figure 4] It is a diagram showing an outline of roof construction by a slide method in an embodiment of the present invention (Part 3). [Figure 5] It is a diagram showing a moving body monitoring system using a displacement measuring device in an embodiment of the present invention. [Figure 6] It is a diagram showing a slide device in an embodiment of the present invention. [Figure 7] It is a diagram showing how the roof structure in an embodiment of the present invention is displaced in the direction perpendicular to the traveling direction (span direction). [Figure 8] It is a diagram showing a displacement measuring device in an embodiment of the present invention. [Figure 9] It is a diagram showing the assembly of blocks in an embodiment of the present invention. [Figure 10] It is a diagram showing output information when a moving body monitoring system using a displacement measuring device is adopted for roof construction by a slide method in an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0018] Of the present invention displacement Measuring device (Hereafter referred to as the slide displacement measuring device) This device is used to determine the horizontal displacement (positional deviation) in the direction perpendicular to the movement of a moving body on rails, and can be applied to any moving body. In this embodiment, we will use the case of employing a slide displacement measuring device in the construction of a roof of a large-space structure using the slide method as an example, and explain the details with reference to Figures 1 to 10.

[0019] <<<Overview of Large-Space Structures and Sliding Construction Methods>>> Before explaining the slide displacement measuring device, we will first describe the general outline of large-span structures and the slide construction method used in the roof construction of such structures.

[0020] ≪Overview of Large-Space Structures≫ As shown in Figures 1(a) and (b), the large-span structure 1 is a building in which the roof 5, which is the superstructure, is supported by a pair of parallel wall bodies 2 that constitute the substructure, and the roof 5 comprises a roof frame 3 made of a steel truss structure and roof finishing material 4.

[0021] The roof finishing material 4 is provided on the roof structure 3 and can be any material that can withstand rainwater, snow, etc. In this embodiment, the roof finishing material 4 provided on the upper chord side of the roof structure 3 is given as an example, but it could also be, for example, an eaves panel provided on the lower chord side of the roof structure 3.

[0022] The roof structure 3 is constructed to span a pair of wall bodies 2 and is formed by connecting multiple blocks arranged in parallel in the direction of extension of the wall bodies 2. In the plan view of Figure 1(b), an example is given in which three blocks, a front block 3a, an intermediate block 3b, and a rear block 3c, are connected by connecting steel frames 10.

[0023] As shown in Figure 1(a), a pair of wall bodies 2 are constructed on either side of a building space S, and a rising wall 22 is provided at the top of each wall body 2 along the outside. A rail 21 is installed parallel to this rising wall 22, along the extending direction of the wall body 2. The rail 21 supports the front block 3a, the intermediate block 3b, and the rear block 3c, and also functions as a guide member when these blocks slide along the extending direction of the wall body 2. Note that a rising wall 22 is not necessarily required at the top of the wall body 2.

[0024] <<Outline of roof construction using the sliding method>> The roof 5 described above can be assembled using a sliding construction method. The procedure is roughly as follows:

[0025] First, as shown in Figure 2(a), a work stage 7 is set up using the building space S at one end of a pair of wall bodies 2. The work stage 7 is supported by a plurality of temporary support platforms 8 erected in the building space S. Then, as shown in Figure 2(b), the front block 3a is assembled on the work stage 7, and the assembled front block 3a is slid along the extending direction of the wall body 2.

[0026] Next, as shown in Figure 3(a), the intermediate block 3b is assembled on the work stage 7 after the front block 3a has moved. The assembled intermediate block 3b is then connected to the rear end of the front block 3a via the connecting steel frame 10, as shown in Figure 3(b), to construct the unit block 3d. This unit block 3d is then slid along the extension direction of the wall 2.

[0027] Following a similar procedure, as shown in Figure 4(a), the rear block 3c is assembled on the work stage 7 after the unit block 3d has moved, and as shown in Figure 4(b), it is connected to the rear end of the intermediate block 3b that makes up the unit block 3d via the connecting steel frame 10 to construct the roof structure 3. After constructing the roof structure 3 in this way, or while constructing it, the roof finishing material 4 is attached to complete the construction of the roof 5.

[0028] In the roof construction using the sliding method described above, the blocks that make up the roof structure 3 (front block 3a, middle block 3b, and rear block 3c) are all assembled on a work stage 7 provided on one end of the wall 2. As shown in Figure 2(a), the work stage 7 can be provided using only a portion of the building space S, which is economical, and the remaining space in the building space S can be efficiently used for other work. Furthermore, since the work areas for the work performed in the building space S and the assembly work of the roof structure 3 do not interfere with each other, both tasks can be carried out in parallel and simultaneously.

[0029] In the procedure described above, the operation of sliding the front block 3a and unit block 3d is performed using the slide support 6, the rail 21 mentioned above, and the sliding device 15, as shown in Figures 5 and 6. Hereafter, the front block 3a will be used as an example to explain its details, but the intermediate block 3b and rear block 3c have a similar configuration.

[0030] ≪Slide support 6 and rail 21≫ As shown in Figure 5, the slide support 6 comprises a support body 61 and a sliding material 62 provided on the lower surface of the support body 61.

[0031] The support body 61 is provided on each column base 32 located above the wall 2 in the front block 3a, and a sliding material 62 is attached to its lower surface. The sliding material 62 is made of a resin plate or the like, and its lower surface is in contact with the rail upper surface material 21d.

[0032] The rail top surface material 21d is formed by smoothing the upper surface of the rail 21 and applying a lubricant, or by attaching a stainless steel plate. As mentioned above, the rail 21 having such rail top surface material 21d consists of long members provided at the top of each of the paired wall bodies 2, and Figure 5 shows an example where H-shaped steel is used.

[0033] ≪Slide device 15 and central control room≫ The sliding device 15 can employ any mechanism capable of sliding the front block 3a along the rail 21 in the direction of extension of the wall 2. For example, Figure 6(a) shows a mechanism in which the front block 3a is pulled by a plurality of synchronized hydraulic jacks 151.

[0034] Multiple hydraulic jacks 151 are installed with their extension direction facing the extension direction of the rail 21, for each support body 61 of the slide support 6 provided on the front block 3a. When extended, one end of each is connected to the front side of the support body 61, and the other end is detachably attached to the rail 21.

[0035] As a result, as shown in Figure 6(b), by retracting the hydraulic jack 151, the front block 3a can slide along the pair of rails 21 in the direction of extension of the wall 2 using the sliding support 6. The sliding device 15 with this configuration is automatically controlled in a central control room so that the amount of movement (movement speed) of the front block 3a is the same on the pair of rails.

[0036] Incidentally, when using the sliding support 6 described above, the front block 3a expands and contracts in the direction perpendicular to the direction of travel (span direction) due to the influence of ambient temperature and direct sunlight, as shown in Figure 7(a). Also, as shown in Figure 7(b), horizontal displacement in the direction perpendicular to the direction of travel occurs in the front block 3a during sliding movement, which may cause problems with the sliding movement. This behavior is the same when moving the unit block 3d, as shown in Figure 3(b).

[0037] Therefore, when adopting the sliding method for roof construction, a mobile monitoring system 100 equipped with a sliding displacement measuring device 130 is used to continuously monitor the front block 3a and unit block 3d while they are sliding, and the amount of expansion and contraction in the direction perpendicular to the movement and the horizontal displacement are managed in real time along with the amount of movement in the direction of movement.

[0038] ≪≪Mobile Monitoring System 100≫≫ As shown in Figure 5, the mobile monitoring system 100 includes a lateral distance measuring device 110, a forward distance measuring device 120, a slide displacement measuring device 130, and a cantilever frame 140 that supports the lateral distance measuring device 110.

[0039] <<Lateral distance measuring device 110 and cantilever frame 140>> The lateral distance measuring device 110 is installed on the front block 3a and measures the distance from the rail 21 in the direction perpendicular to the direction of travel. In this embodiment, a laser distance sensor is used, but any measuring instrument that can continuously measure the distance from the rail 21 can be used, such as a non-contact distance measuring device using ultrasound or millimeter waves, or a contact-type distance measuring device. Such a lateral distance measuring device 110 may be attached to the front block 3a using any jig, but Figure 5 shows an example where a cantilever frame 140 is used.

[0040] The cantilever frame 140 is attached to the support body 61 of the slide support 6 so as to protrude toward the building space S, and the mounting portion 141 for the lateral distance measuring instrument 110 is provided within the height range of the rail 21. In Figure 5, the mounting portion 141 is set so that the lateral distance measuring instrument 110 is positioned at a height opposite to the side surface of the upper flange 21b of the rail 21, but the mounting portion 141 may also be set so that the lateral distance measuring instrument 110 is at a height opposite to the web 21c.

[0041] Furthermore, the cantilever frame 140 is reinforced with diagonal members 142 as needed to prevent the mounting section 141 from deforming due to the weight of the lateral distance measuring device 110. As a result, the lateral distance measuring device 110 can always measure the distance from the rail 21 with high precision.

[0042] As shown in Figure 2(b), a total of four such cantilever frames 140 and lateral distance measuring devices 110 are provided, one pair at the front and rear ends of the front block 3a in the direction of travel. This allows for the measurement of the distance from the rail 21 near each of the four corners of the front block 3a.

[0043] When sliding the unit block 3d, as shown in Figure 3(b), a total of four lateral distance measuring devices 110 may be provided, one pair each at the front and rear ends in the direction of travel. Alternatively, a separate pair of lateral distance measuring devices 110 may be prepared and placed in the middle of the unit block 3d in the direction of travel. In this way, the distance from the rail 21 can be measured at a total of six locations, including near the four corners of the unit block 3d.

[0044] ≪Forward Distance Measuring Device 120≫ The forward distance measuring device 120 measures the distance between the forward block 3a and the moving target point. Similar to the lateral distance measuring device 110, the forward distance measuring device 120 may employ either a contact-type or non-contact-type distance measuring device.

[0045] In this embodiment, as shown in Figure 6(a), a laser distance sensor is employed that emits a laser towards a target T installed near the destination point. This combination of the forward distance measuring device 120 and the target T is positioned at both corners of the front end in the direction of travel of the front block 3a. This allows the distance to the destination point to be measured at both corners of the front end in the direction of travel of the front block 3a.

[0046] <<Slide Displacement Measurement Device 130>> The slide displacement measuring device 130 can be any device that includes an input unit 131, a calculation processing unit 132, and an output unit 133, as shown in Figure 8, and can be a personal computer, notebook PC, tablet terminal, etc.

[0047] The input unit 131 is connected wirelessly or via wire to the lateral distance measuring device 110 and the forward distance measuring device 120, and receives information such as the measured distance from the rail 21 acquired by the lateral distance measuring device 110 and the measured forward distance to target T acquired by the forward distance measuring device 120. Although not shown in the diagram, it may also be configured to be connected to input devices such as a keyboard, mouse, or scanner, and to receive information input to these devices.

[0048] The output unit 133 includes a data output unit 1331 and an alarm output unit 1332. The data output unit 1331 outputs information acquired via the input unit 131 and processed data processed by the arithmetic processing unit 132 to the display device 134.

[0049] Furthermore, the alarm output unit 1332 outputs alarm information to the display device 134 when the horizontal displacement detection unit 1321 of the calculation processing unit 132 (described later) detects an abnormality in the horizontal displacement of the front block 3a or the unit block 3d.

[0050] The display device 134 may be a monitor installed in the central control room of the slide device 15, which is connected to the output unit 133 wirelessly or by wire, or any other display, printer, etc. In addition, the alarm information output from the alarm output unit 1332 may be output not only to the display device 134, but also to an output device capable of providing audio notification, such as a speaker.

[0051] Furthermore, the terminal devices 135, such as mobile terminals carried by workers or management computers installed in the construction office, and the slide displacement measuring device 130 may be made capable of mutual data transmission via a communication network. In this case, information can be input from the terminal device 135 to the slide displacement measuring device 130 via the input unit 131, or information can be output from the slide displacement measuring device 130 to the terminal device 135 via the output unit 133. The communication network may be constructed using the internet, a dedicated communication line, or any other method.

[0052] The arithmetic processing unit 132 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory) and controls the operation of the slide displacement measuring device 130. Such an arithmetic processing unit 132 includes at least a horizontal displacement detection unit 1321, an expansion / contraction amount detection unit 1322, and a movement amount detection unit 1323. Details will be explained in the roof construction method using the mobile body monitoring system 100, but the general outline is as follows, using the front block 3a as an example.

[0053] The horizontal displacement detection unit 1321 calculates the horizontal displacement of the front block 3a in the direction perpendicular to the rail 21 caused by sliding movement, based on the measured distance from the rail 21 obtained by the lateral distance measuring instrument 110. It also determines whether or not there is an abnormality in the horizontal displacement of the front block 3a based on the calculated horizontal displacement and a predetermined horizontal displacement threshold.

[0054] The expansion / contraction detection unit 1322 calculates the expansion / contraction amount in the direction perpendicular to the direction of travel for each of the front and rear ends of the front block 3a, based on the measured distance from the rail 21 obtained by a pair of lateral distance measuring devices 110 provided at the front and rear ends of the front block 3a, respectively. Then, the movement amount detection unit 1323 calculates the movement amount of the front block 3a in the direction of travel for each of the two corners of the front end, based on the measured forward distance to target T obtained by the forward distance measuring device 120.

[0055] <<Roof construction method using mobile monitoring system 100>> The procedure for constructing a roof using the sliding method with the mobile monitoring system 100 having the above configuration is described below.

[0056] <<Assembly of front block 3a>> First, as shown in Figure 2(b), the front block 3a is assembled on a work stage 7 provided on one end of a pair of wall bodies 2 in the building space S.

[0057] The front block 3a is assembled, for example, supported by an extension device 9 installed at a predetermined position on the work stage 7, as shown in Figure 9(a). The extension device 9 not only supports the front block 3a, but also controls the amount of extension of each part to cause it to bulge. In conjunction with these operations, it is advisable to install the support body 61 and sliding material 62 of the slide support 6 on the column base 32 located above the rail 21.

[0058] <<Preparation for slide transitions>> Next, the telescopic device 9 is jacked down, and the assembled front block 3a is supported by the pair of rails 21, as shown in Figure 9(a).

[0059] Around the same time as this work, as shown in Figure 5, a front distance measuring device 120 is installed on the front block 3a. In addition, a lateral distance measuring device 110 is installed via a cantilever frame 140. Furthermore, as shown in Figure 6(a), a sliding device 15 is installed to slide the front block 3a along the rail 21 in the direction of extension of the wall 2.

[0060] ≪Setting initial values ​​and judgment thresholds≫ Before starting the sliding movement using the sliding device 15, the moving body monitoring system 100 is used to set the initial value of the forward distance, the initial value of the separation distance, and the determination threshold for horizontal displacement.

[0061] The initial forward distance value is the actual forward distance to target T measured by each forward distance measuring device 120 at the time when the forward block 3a starts sliding. The initial separation distance value is the actual distance to rail 21 measured by each lateral distance measuring device 110 at the time when the forward block 3a starts sliding.

[0062] The judgment threshold is set based on the initial distance between the rails, the width of the rail 21, the distance between the front block 3a and the rising wall 2a, and the design information of the roof structure 3, thereby setting an upper limit for the horizontal displacement in the direction perpendicular to the direction of travel. The initial distance to the front, the initial distance between the rails, and the judgment threshold for horizontal displacement, set as described above, are stored in the memory unit of the calculation processing unit 132 via the input unit 131 of the slide displacement measuring device 130.

[0063] ≪Sliding movement of the front block 3a≫ After the above preparations are carried out, the sliding device 15 is activated, and the sliding movement of the front block 3a begins, as shown in Figure 2(b). While the front block 3a is sliding along the pair of rails 21, the moving body monitoring system 100 continuously measures the distance to the rails 21 with the lateral distance measuring device 110 and obtains the measured distance between them. In addition, the distance to the target T is continuously measured with the forward distance measuring device 120 and the measured distance to the front is obtained. These measured values ​​are transmitted to the sliding displacement measuring device 130.

[0064] <<Monitoring of forward block 3a: Distance traveled>> When the slide displacement measuring device 130 receives the measured forward distance via the input unit 131, the calculation processing unit 132 receives a command from the movement amount detection unit 1323 and calculates the movement distance (amount of movement) of the front end of the forward block 3a in the direction of travel and the difference in movement distances to the left and right. The movement distance can be obtained by calculating the difference between the measured forward distance and the initial forward distance.

[0065] Once the distance traveled (amount of movement) of the front block 3a and the difference in travel distance between the left and right front ends in the direction of travel are calculated, the calculation processing unit 132 outputs the calculation results to the display device 134 via the output unit 133. As can be seen in Figure 10, the left front end (L side) of the front block 3a moves 40.788m, and the right front end (R side) moves 40.795m. This shows that the difference in travel distance is within approximately 7mm. Such travel distance and difference in travel distance are calculated each time the measured forward distance is calculated, and the output value of the display device 134 is updated accordingly.

[0066] <<Monitoring of forward block 3a: Horizontal displacement (positional deviation)>> When the slide displacement measuring device 130 receives the measured distance via the input unit 131, the calculation processing unit 132 receives a command from the horizontal displacement detection unit 1321 and calculates the horizontal displacement in the direction perpendicular to the forward block 3a. The horizontal displacement can be obtained by calculating the difference between the measured distance and the initial distance.

[0067] When the horizontal displacement is calculated near the four corners of the front block 3a in a plan view, the calculation processing unit 132 outputs the calculation result to the display device 134 via the output unit 133. Figure 10 shows that the front block 3a has a horizontal displacement of 18 mm on the left rear end (BL side), 34 mm on the right rear end (BR side), and to the left side (L side). It also shows that the front end has a horizontal displacement of 19 mm on the left front end (FL side), 20 mm on the right front end (FR side), and to the left side (L side).

[0068] In other words, it can be determined that the front block 3a tends to shift eccentrically to the left (L side) as it slides. This horizontal displacement is calculated each time the measured distance between the blocks is obtained, and the output value of the display device 134 is updated accordingly.

[0069] Furthermore, upon receiving a command from the horizontal displacement detection unit 1321, the calculation processing unit 132 compares the horizontal displacement near each of the four corners of the front block 3a in a plan view with a preset judgment threshold each time the horizontal displacement is calculated. If the horizontal displacement at at least one of these locations is greater than the judgment threshold, it is determined that there is an "abnormality" in the horizontal displacement of the front block 3a.

[0070] If the calculation processing unit 132 determines that there is an "abnormality" in the horizontal displacement, it sends a warning message via the alarm output unit 1332 to a display device 134, such as a monitor installed in the central control room of the slide device 15. When a worker receives a warning message on the display device 134, they should temporarily suspend the operation of the slide device 15 and take appropriate action, such as visually checking the horizontal displacement of the front block 3a relative to the rail 21, or adjusting the slide device 15 to adjust the position of the front block 3a.

[0071] <<Monitoring of forward block 3a: Expansion / contraction amount>> When the slide displacement measuring device 130 acquires the horizontal displacement near the four corners of the front block 3a in a plan view, the calculation processing unit 132 receives a command from the expansion / contraction amount detection unit 1322 and calculates the expansion / contraction amount of the front block 3a in the direction perpendicular to the direction of travel. The expansion / contraction amount on the rear end side in the direction of travel can be calculated from the difference in horizontal displacement between the left rear end (BL side) and the right rear end (BR side). The expansion / contraction amount on the front end side in the direction of travel can be calculated from the difference in horizontal displacement between the left front end (FL side) and the right front end (FR side).

[0072] Once the expansion / contraction amount of the front block 3a is calculated, the calculation processing unit 132 outputs the calculation result to the display device 134 via the output unit 133. As can be seen in Figure 10, the front end of the front block 3a in the direction of travel contracts by 1 mm, and the rear end in the direction of travel contracts by 16 mm. Such expansion / contraction amounts in the direction perpendicular to travel are calculated each time the horizontal displacement of the front block 3a is calculated, and the output value of the display device 134 is updated accordingly.

[0073] As described above, by employing the mobile monitoring system 100 equipped with the slide displacement measuring device 130, the horizontal displacement of the front and rear ends of the front block 3a in the direction of travel relative to the rail 21 can be constantly monitored by a display device 134 such as a monitor installed in the central control room of the slide device 15, enabling highly accurate and efficient management. Therefore, the work of monitoring the behavior of the front block 3a by workers can be eliminated, resulting in significant labor savings.

[0074] When the front block 3a reaches its intended position, the sliding operation of the front block 3a is terminated. Next, following the same procedure as the assembly process of the front block 3a, the intermediate block 3b is constructed on the work stage 7 as shown in Figures 3(a) and (b), and then connected to the front block 3a via the connecting steel frame 10 to construct the unit block 3d.

[0075] Subsequently, using the same procedure as in the process of moving the front block 3a, the unit block 3d is constantly monitored by the moving body monitoring system 100 while it is sliding, and the amount of expansion and contraction in the direction perpendicular to the movement and the horizontal displacement are managed in real time. Using the same procedure, as shown in Figures 4(a) and (b), the rear block 3c is constructed and connected to the unit block 3d via the connecting steel frame 10 to construct the roof structure 3. In this way, the roof structure 3, which is supported by the wall structure 2, is constructed by the sliding method.

[0076] The slide displacement measuring device 130 of the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the present invention.

[0077] For example, in this embodiment, both the front block 3a and the unit block 3d are provided with pairs of lateral distance measuring devices 110 at the front and rear ends in the direction of travel, as shown in Figures 2(b) and 3(b), but this is not necessarily the only option. The lateral distance measuring devices 110 may be placed near the four corners in a plan view, at either the front or rear end in the direction of travel. Furthermore, multiple pairs of lateral distance measuring devices 110 may be added and installed in the middle section in the direction of travel.

[0078] Furthermore, in this embodiment, as shown in Figure 1(b), the roof structure 3 of the large-span structure 1 is divided into three blocks, but if the roof structure 3 is very long, it may be divided into three or more blocks. [Explanation of Symbols]

[0079] 1 Large space structure 2 wall 21 rails 21a Lower flange 21b Upper flange 21c Web 21d Rail top surface material 22 Retaining wall 3. Roof structure 31 Steel columns 32 Pillar base 3a Front block 3b Intermediate block 3c Rear block 3D Unit Blocks 4. Roof finishing materials 5. Roof 6. Slide support 61 Bearing body 62 Lubricants 7 Work Stages 8. Temporary support platform 9 Telescopic device 10 Connecting steel frame 100 Mobile Surveillance Systems 110 Side Distance Measuring Instrument 120 Forward distance measuring device 130 Slide Displacement Measuring Device 131 Input section 132 Arithmetic Processing Unit 1321 Horizontal displacement detection unit 1322 Expansion Amount Detection Unit 1323 Movement detection unit 133 Output section 1331 Data Output Section 1332 Alarm Output Unit 134 Display device 135 Terminal device 140 Cantilever Frame 141 Mounting section 142 Diagonal 15. Slide device 151 Hydraulic Jack T Target J Hydraulic Jack S Building Space

Claims

1. A displacement measuring device for detecting the horizontal displacement of a moving body that slides along a rail in a direction perpendicular to the rail, An input unit that receives measured values ​​obtained by a lateral distance measuring device, which is provided on at least the front and rear sides of the moving body in the direction of travel and measures the distance from the rail in the direction perpendicular to the direction of travel, A calculation processing unit that performs calculations based on the information received by the input unit, The system includes an output unit that outputs the information processed by the aforementioned arithmetic processing unit, The aforementioned arithmetic processing unit is A displacement measuring device characterized by comprising a horizontal displacement detection unit that calculates the horizontal displacement based on the measured value received by the input unit.

2. In the displacement measuring device according to claim 1, The input unit is provided with a pair of the side units, one on the front side and the other on the rear side in the direction of travel of the moving body. The measured values ​​obtained by the distance measuring instrument are received, The calculation processing unit, based on the measured values ​​received by the input unit, determines the moving body It is equipped with an expansion / contraction detection unit that calculates the amount of expansion / contraction in the direction perpendicular to the direction of travel for both the front and rear sides. A distinctive feature is the displacement measurement device.

Images