Settlement measurement test device for structure

Abstract

The utility model provides a settlement measurement test device for a structure, which comprises a holder, a signal transmitting device, a data receiving device and a height adjusting mechanism for adjusting the height of the signal transmitting device, the holder is arranged on the structure through the height adjusting mechanism, the signal transmitting device is arranged on the holder, and the data receiving device is arranged on the holder. The data receiving device is fixed at a settlement observation point, the transmitting end of the signal transmitting device is opposite to the data receiving device, the data receiving device is connected with a data acquisition instrument, and the data acquisition instrument is connected with a computer for analyzing data. The device is reasonable and simple in structural arrangement, high in measurement data precision, not complex in overall structural arrangement, suitable for on-line real-time monitoring of different structures, low in manufacturing cost and convenient to install.

Description

Technical Field

[0001] The invention relates to the technical field of structure settlement observation, in particular to a settlement measurement test device for a structure. Background Art

[0002] Settlement monitoring is an important monitoring technology in the field of civil engineering, which is used to monitor the settlement of land or structures. Settlement monitoring is of key significance during the construction and operation periods, helping engineers and operators to understand the stability and safety of the structure in a timely manner.

[0003] At present, the principle of settlement monitoring is to measure and record the settlement changes of the ground or structure through monitoring equipment installed on the surface of the soil or structure. These monitoring equipment usually include measuring instruments, sensors, data acquisition systems, etc. By collecting monitoring data, engineers can analyze the settlement trend, rate and amplitude of the land or structure and determine whether there is a stability problem.

[0004] There are many methods for settlement monitoring, among which the common ones in the construction period include leveling, total station measurement, remote sensing technology, etc. Leveling is a traditional and effective method that infers the settlement of land or structures by measuring the elevation changes of the benchmark points. Total station measurement uses precision optical measuring instruments to measure the three-dimensional coordinate changes of ground points, thereby accurately depicting the settlement of land or structures. Remote sensing technology uses image data obtained by satellites or aircraft to study the settlement of land or structures through image interpretation and analysis. Common ones in the operation period include remote sensing technology, static level, differential pressure gauge, etc. Among them, the static level is based on the principle of communicating vessels, and obtains the settlement of land or structures through liquid level changes. The differential pressure gauge measures the pressure difference at two different locations to infer the settlement of land or structures. However, the above-mentioned monitoring methods have problems such as high cost, cumbersome installation, slow response, and poor stability in the process of structure settlement monitoring, especially long-term continuous monitoring during the operation period of the structure, which directly affects the results of later data analysis to a certain extent. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a test device for measuring the long-term settlement of structures, especially the settlement monitoring of box beam structures. The utility model can realize real-time measurement of the settlement of structures by laser scanning, solves the technical problems of the current monitoring equipment being cumbersome, slow in response and poor in stability, and has the advantage of being able to be used for long-term monitoring. The technical solution is as follows:

[0006] A settlement measurement test device for a structure comprises a pan-tilt platform, a signal transmitting device, a data receiving device and a height adjustment mechanism for adjusting the height of the signal transmitting device. The pan-tilt platform is installed on the structure through the height adjustment mechanism, the signal transmitting device is installed on the pan-tilt platform, the data receiving device is fixed at a settlement observation point, the transmitting end of the signal transmitting device is opposite to the data receiving device, the data receiving device is connected to a data acquisition instrument, and the data acquisition instrument is connected to a computer for analyzing data.

[0007] Preferably, the gimbal is a three-axis stable gimbal, which includes an X-axis assembly, a Z-axis assembly and a Y-axis assembly. The Z-axis assembly is fixedly connected to the height adjustment mechanism, the X-axis assembly is connected to the rotating end of the Z-axis assembly, the Y-axis assembly is connected to the rotating end of the X-axis assembly, and the signal transmitting device is connected to the rotating end of the Y-axis assembly.

[0008] Preferably, the signal transmitting device is a semiconductor laser, and the data receiving device is an optical signal receiving device.

[0009] Preferably, the height adjustment mechanism includes a fixed plate and an adjustment plate, the adjustment plate is L-shaped, the horizontal part of the adjustment plate is fixedly connected to the pan-tilt head, the vertical part of the adjustment plate is vertically provided with at least one first adjustment hole, one end of the fixed plate is fixedly connected to the structure through a mounting plate, a plurality of second adjustment holes are vertically provided along the upper edge of the fixed plate, and the fixed plate and the adjustment plate are connected by bolts, the first adjustment holes and the second adjustment holes.

[0010] Preferably, the height adjustment mechanism comprises a fixed cylinder, an adjustment sleeve and an adjustment rod, one end of the fixed cylinder is fixedly connected to the structure through a mounting plate, the other end of the fixed cylinder is provided with an opening, a sliding cavity is provided in the fixed cylinder, the sliding cavity is communicated with the opening, and sliding grooves are provided on both sides of the sliding cavity;

[0011] The outer wall of the adjusting rod is provided with an external thread, one end of the adjusting rod is fixedly connected to the pan / tilt head through a connecting plate, the other end of the adjusting rod is slidably arranged in the sliding cavity, and sliders are arranged at both ends of the outer wall of the adjusting rod located in the sliding cavity, and the two sliders are slidably arranged in the two sliding grooves respectively;

[0012] The outer wall of the adjusting rod is threadedly connected with an adjusting sleeve, and the adjusting sleeve is rotatably connected to the fixing cylinder.

[0013] Preferably, a motor is fixed on the outer wall of the fixing cylinder, a gear is connected to the output end of the motor, an external gear is provided on the outer wall of the adjusting sleeve, and the gear is meshed with the external gear.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model only needs to install a height adjustment device, a signal transmitting device and a data receiving device on site, which can effectively avoid the need for previous monitoring equipment to lay water pipes and inject antifreeze, etc. It is easy to install and maintain, improves work efficiency and reduces maintenance costs;

[0016] 2. The signal transmitter of the utility model is installed on a stable pan-tilt platform to ensure that the signal transmitter is always kept horizontal, which can effectively reduce the impact of structural vibration on the measurement results and the data error caused by structural tilt, and improve the measurement accuracy;

[0017] 3. The utility model obtains monitoring results by means of laser beam dot marking. Compared with the previous monitoring data feedback through liquid level changes, it has a rapid response and can obtain real-time monitoring values, which is more conducive to analyzing structural performance.

[0018] 4. The utility model has a reasonable and simple structure, high measurement data accuracy, and a simple overall structure. It is suitable for online real-time monitoring of different structures and has the advantages of low cost, easy installation, replicability, and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the first embodiment of the utility model after the height adjustment structure is connected with the pan / tilt head and the signal transmitting device;

[0021] Figure 3 This is a schematic diagram of the height adjustment structure of the second embodiment of the utility model;

[0022] Figure 4 This is a cross-sectional view of the height adjustment structure of the second embodiment of the utility model.

[0023] Numbers in the figure: 1. signal transmitting device; 2. pan-tilt head; 21. Z-axis assembly; 22. X-axis assembly; 23. Y-axis assembly; 3. first height adjustment mechanism; 31. fixing plate; 32. adjustment plate; 4. mounting plate; 5. data receiving device; 6. second height adjustment mechanism; 61. fixing cylinder; 62. adjustment sleeve; 63. adjustment rod; 64. connecting plate; 7. top plate of box-type beam structure; 8. bridge pier; 9. second adjustment hole; 10. bolt. DETAILED DESCRIPTION

[0024] In order to make the present invention clearer and more understandable, the technical solution of the present invention is further described in detail below in combination with the accompanying drawings and embodiments. It should be understood that the given embodiments are only two of the implementation methods and do not represent all embodiments.

[0025] In this article, terms such as "up, down, inside, outside, horizontal, vertical" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the scope of protection.

[0026] Embodiment 1:

[0027] Combined with Figure 1 and attached Figure 2 Description: Embodiment 1 of the utility model provides a settlement measurement test device for a structure, comprising a pan-tilt head 2, a signal transmitting device 1, a data receiving device 5 and a height adjustment mechanism for adjusting the height of the signal transmitting device 1. The pan-tilt head 2 is installed on the structure through the height adjustment mechanism, the signal transmitting device 1 is installed on the pan-tilt head 2, and the data receiving device 5 is fixed at the settlement observation point. Specifically, the signal transmitting device 1 is a semiconductor laser, and the data receiving device 5 is an optical signal receiving device; the transmitting end of the signal transmitting device 1 is opposite to the data receiving device 5, the data receiving device 5 is connected to a data acquisition instrument, and the data acquisition instrument is connected to a computer for analyzing data.

[0028] Specifically, the gimbal 2 is a three-axis stable gimbal 2, which includes an X-axis component 22, a Z-axis component 21 and a Y-axis component 23. The Z-axis component 21 is fixedly connected to the height adjustment mechanism, the X-axis component 22 is connected to the rotating end of the Z-axis component 21, the Y-axis component 23 is connected to the rotating end of the X-axis component 22, and the signal transmitting device 1 is connected to the rotating end of the Y-axis component 23. The X-axis component 22 is the pitch axis of the gimbal 2, the Z-axis component 21 is the yaw axis of the gimbal 2, and the Y-axis component 23 is the roll axis of the gimbal 2; the gimbal 2 can automatically adjust its posture to ensure that the signal transmitting device 1 is always in a horizontal state, maintain the balance and stability of the signal transmitting device 1, and avoid the influence of structural vibration on the measurement results. The three-axis stable gimbal 2 is an existing device, such as a shooting gimbal 2 for drones, which will not be described here.

[0029] Specifically, the height adjustment mechanism is a first height adjustment mechanism 3, which includes a fixing plate 31 and an adjustment plate 32. The adjustment plate 32 is L-shaped, the horizontal portion of the adjustment plate 32 is fixedly connected to the pan / tilt head 2, and the vertical portion of the adjustment plate 32 is provided with at least one first adjustment hole in the vertical direction, and the number of first adjustment holes is preferably two. One end of the fixing plate 31 is fixedly connected to the structure through the mounting plate 4, and the mounting plate 4 and the structure can be connected through an expansion bolt 10. A plurality of second adjustment holes 9 are provided vertically on the fixing plate 31, and the fixing plate 31 and the adjustment plate 32 are connected through the matching of the bolts 10, the first adjustment holes, and the second adjustment holes 9. When the height of the signal transmitter 1 needs to be adjusted, it is only necessary to screw out the bolts 10 from the two adjustment holes, move the adjustment plate 32 vertically, and after the position of the adjustment plate 32 is adjusted, screw the bolts 10 into the first adjustment hole and the second adjustment hole 9 corresponding to the current position of the first adjustment hole, thereby completing the adjustment of the height of the signal transmitter 1. More specifically, the first adjustment hole and the second adjustment hole 9 can both be set as threaded holes matching the bolt 10, or the first adjustment hole and the second adjustment hole 9 can both be set as through holes. After the bolt 10 passes through the two through holes, a nut is threadedly connected to the outer wall of the bolt 10, and the fixing plate 31 and the adjustment plate 32 are connected by the cooperation between the nut and the bolt 10.

[0030] When in use, taking the box beam structure as an example, the pan / tilt 2 is installed at the bottom of the top plate 7 of the box beam structure through the height adjustment mechanism, the signal transmitting device 1 is installed on the pan / tilt 2, the height of the signal transmitting device 1 is adjusted through the height adjustment mechanism, the signal transmitting device 1 is started to emit laser, and the dot position (i.e., the settlement observation point) is determined by the irradiation point of the laser on the pier 8, the data receiving device 5 is installed at the dot position, and the data receiving device 5 is fixed on the pier 8. Specifically, the data receiving device 5 can be fixed on the pier 8 by the expansion bolts 10.

[0031] During the monitoring process, the data receiving device 5 receives the laser emitted by the signal transmitting device 1 in real time, and the data receiving device 5 converts the optical signal into an electrical signal, and outputs the electrical signal to the data acquisition instrument, and the data acquisition instrument converts the electrical signal transmitted by the data acquisition device into a digital signal; when the structure settles, the laser emitted by the signal transmitting device 1 at the data receiving device 5 will produce a position change, and the data receiving device 5 receives different optical signals at different positions, and different optical signals correspond to different digital signals. The data acquisition instrument can thus obtain the numerical changes of the observation point position at different times and record the settlement changes. Specifically, during the installation of the test device, the initial laser dot position can be taken as 0. In the later monitoring process, the position of the laser after the change is determined by the change of the laser dot position relative to the initial position, and different optical signals are obtained, thereby obtaining the numerical values ​​of the observation point position at different times; the data acquisition instrument transmits the data to the data analysis computer, and the real-time settlement value of the observation point and the change curve over a period of time can be obtained through the analysis software for analysis by technical personnel.

[0032] Embodiment 2:

[0033] Combined with Figure 3 and attached Figure 4 Description: Embodiment 2 of the present invention provides a settlement measurement test device for a structure. The settlement measurement test device provided in this embodiment has the same basic structural properties as the settlement measurement test device in Embodiment 1. The difference is that the height adjustment mechanism in this embodiment is a second height adjustment mechanism 6. The second height adjustment mechanism 6 includes a fixed cylinder 61, an adjustment sleeve 62, and an adjustment rod 63. One end of the fixed cylinder 61 is fixedly connected to the structure through a mounting plate 4. The other end of the fixed cylinder 61 is provided with an opening. A sliding cavity is provided in the fixed cylinder 61. The sliding cavity is connected to the opening, and slide grooves are provided on both sides of the sliding cavity.

[0034] The outer wall of the adjusting rod 63 is provided with an external thread, one end of the adjusting rod 63 is fixedly connected to the pan / tilt head 2 through a connecting plate 64, and the other end of the adjusting rod 63 is slidably arranged in the sliding cavity. Slide blocks are arranged at both ends of the outer wall of the adjusting rod 63 located in the sliding cavity, and the two slide blocks are slidably arranged in two sliding grooves respectively;

[0035] The outer wall of the adjusting rod 63 is threadedly connected with an adjusting sleeve 62 , and the adjusting sleeve 62 is rotatably connected to the fixing tube 61 .

[0036] Since the adjusting sleeve 62 is fixed in position, the adjusting rod 63 is threadedly connected to the adjusting sleeve 62, and the adjusting rod 63 is restricted by the slide groove and cannot rotate, when the adjusting sleeve 62 rotates, the adjusting rod 63 will move up and down. Therefore, when it is necessary to adjust the height of the signal transmitting device 1, it is only necessary to twist the adjusting sleeve 62 to adjust the height of the signal transmitting device. Compared with the first height adjustment mechanism 3, the adjustment method of the second height adjustment mechanism 6 is simpler and more convenient, without the need to disassemble the bolts 10, and the adjustment accuracy is higher.

[0037] Specifically, a motor is fixed to the outer wall of the fixed cylinder 61, a gear is connected to the output end of the motor, an outer gear is provided on the outer wall of the adjustment sleeve 62, and the gear is meshed with the outer gear. The gear is driven by the motor to rotate, and the gear drives the adjustment sleeve 62 to rotate through the outer gear. The forward / reverse rotation of the motor realizes the forward / reverse rotation of the adjustment sleeve 62, thereby realizing the upward or downward movement of the adjustment rod 63; the motor can be connected to the driver, the driver is connected to the controller, and the controller is connected to the computer. The start and stop of the motor and the forward / reverse rotation are controlled by the computer, thereby realizing the remote adjustment of the height of the signal transmitter, and the staff does not need to go to the structure (such as the bottom of the top plate 7 of the box beam structure) to adjust the height of the signal transmitter, which is safer and more convenient to use. Using a computer to control the action of the motor is a conventional technology and will not be described in detail here.

[0038] Although embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A settlement measurement test device for a structure, characterized in that: The invention comprises a pan-tilt platform (2), a signal transmitting device (1), a data receiving device (5), and a height adjustment mechanism for adjusting the height of the signal transmitting device (1); the pan-tilt platform (2) is mounted on a structure via the height adjustment mechanism; the signal transmitting device (1) is mounted on the pan-tilt platform (2); the data receiving device (5) is fixed at a settlement observation point; a transmitting end of the signal transmitting device (1) is opposite to the data receiving device (5); the data receiving device (5) is connected to a data acquisition instrument; and the data acquisition instrument is connected to a computer for analyzing data.

2. A settlement measurement test device for a structure according to claim 1, characterized in that: The gimbal (2) is a three-axis stable gimbal (2), comprising an X-axis component (22), a Z-axis component (21) and a Y-axis component (23), wherein the Z-axis component (21) is fixedly connected to a height adjustment mechanism, the X-axis component (22) is connected to a rotating end of the Z-axis component (21), the Y-axis component (23) is connected to a rotating end of the X-axis component (22), and the signal transmitting device (1) is connected to a rotating end of the Y-axis component (23).

3. A settlement measurement test device for a structure according to claim 1, characterized in that: The signal transmitting device (1) is a semiconductor laser, and the data receiving device (5) is an optical signal receiving device.

4. A settlement measurement test device for a structure according to claim 1, characterized in that: The height adjustment mechanism comprises a fixing plate (31) and an adjustment plate (32); the adjustment plate (32) is L-shaped; the horizontal portion of the adjustment plate (32) is fixedly connected to the pan / tilt head (2); the vertical portion of the adjustment plate (32) is provided with at least one first adjustment hole in the vertical direction; one end of the fixing plate (31) is fixedly connected to a structure via a mounting plate (4); a plurality of second adjustment holes (9) are provided in the vertical direction on the fixing plate (31); and the fixing plate (31) and the adjustment plate (32) are connected by means of a bolt (10), the first adjustment hole, and the second adjustment hole (9).

5. A settlement measurement test device for a structure according to claim 1, characterized in that: The height adjustment mechanism comprises a fixed cylinder (61), an adjustment sleeve (62) and an adjustment rod (63); one end of the fixed cylinder (61) is fixedly connected to the structure via a mounting plate (4); the other end of the fixed cylinder (61) is provided with an opening; a sliding cavity is provided in the fixed cylinder (61); the sliding cavity is communicated with the opening; and sliding grooves are provided on both sides of the sliding cavity; The outer wall of the adjusting rod (63) is provided with an external thread, one end of the adjusting rod (63) is fixedly connected to the pan head (2) via a connecting plate (64), the other end of the adjusting rod (63) is slidably arranged in the sliding cavity, and sliding blocks are provided at both ends of the outer wall of the adjusting rod (63) located in the sliding cavity, and the two sliding blocks are slidably arranged in two sliding grooves respectively; An adjusting sleeve (62) is threadedly connected to the outer wall of the adjusting rod (63), and the adjusting sleeve (62) is rotatably connected to the fixing cylinder (61).

6. A settlement measurement test device for a structure according to claim 5, characterized in that: A motor is fixed to the outer wall of the fixing cylinder (61), a gear is connected to the output end of the motor, an external gear is provided on the outer wall of the adjusting sleeve (62), and the gear meshes with the external gear.

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