Portable bridge girder deflection monitoring GNSS device

Abstract

The utility model discloses a portable bridge girder deflection monitoring GNSS device, and relates to the technical field of bridge girder deflection monitoring, the portable bridge girder deflection monitoring GNSS device comprises a GNSS receiver, the lower end of the GNSS receiver is provided with a bottom rod in a sliding manner, the lower end of the bottom rod is fixed through a bottom fixing mechanism, the bottom fixing mechanism comprises a bottom plate, and the bottom plate is fixedly connected with the GNSS receiver. A sliding groove is formed in the bottom plate, and fixing pieces are installed at the two ends of the sliding groove in a sliding mode respectively. According to the utility model, the bottom of the GNSS receiver is fixed through the bottom fixing mechanism, the GNSS receiver can move at will after being installed through the movement of the bottom plate, and the flexible and adjustable bottom fixing mechanism is helpful to better adapt to various different installation environments, and ensures that the equipment can be stably placed at an ideal position. And meanwhile, the movable adjusting plate is used for driving the vertical plate and the fixed plate to move, so that the GNSS receiver is more convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge main beam deflection monitoring, in particular to a portable bridge main beam deflection monitoring GNSS device. Background Art

[0002] Steel-concrete composite girder cable-stayed bridges are a common bridge structure. Monitoring the deflection of their main beams is crucial to ensuring the safety and durability of the bridge. In recent years, Global Navigation Satellite System (GNSS) devices have been widely used in bridge deflection monitoring due to their high precision, automation, and convenience. GNSS devices are devices that use satellite signals for positioning and navigation.

[0003] According to Chinese patent publication number: CN207248157U, a GNSS device with a tilt measurement function is disclosed, including a balancing base plate, a spirit level, a GNSS device, a centering rod, a multi-system antenna and an analysis and processing module. An adjustable balancing base plate is connected to the bottom end of the GNSS device, and mutually perpendicular coordinate lines and scales are set on the balancing base plate. A retractable and scaled multi-system antenna is embedded on the top end of the GNSS device. When the balancing base plate and the GNSS device cannot be adjusted to a horizontal position, the multi-system antenna will be projected onto the coordinate lines on the balancing base plate and marked with a scale. At this time, the user enters the corresponding data into the analysis and processing module through the input keyboard on the GNSS device. The analysis and processing module automatically calculates and performs corresponding addition and subtraction based on the input data, and combines a unique algorithm to accurately realize high-precision measurement of the GNSS device in uneven areas, which has great practical value.

[0004] However, in actual operation, traditional GNSS receiver fixing methods have some shortcomings that limit their maximum effectiveness. For example, once a GNSS receiver is installed and fixed, it is difficult to accurately adjust its position. This is particularly inconvenient during bridge construction or maintenance, because the original optimal installation position may change with changes in construction progress or environmental factors. Different models of GNSS receivers often have different base sizes and shapes, resulting in the need to prepare a dedicated fixing device for each device, which increases cost and complexity, making the GNSS device very inconvenient when used. Utility Model Content

[0005] The purpose of the utility model is to provide a convenient GNSS device for monitoring the deflection of a bridge main beam, which can avoid the difficulty of accurately adjusting the position of a GNSS receiver once it is installed and fixed, which is particularly inconvenient during bridge construction or maintenance.

[0006] The utility model provides a convenient GNSS device for monitoring the deflection of a bridge main beam, comprising a GNSS receiver, wherein a bottom rod is slidably provided at the lower end of the GNSS receiver, the lower end of the bottom rod is fixed by a bottom fixing mechanism, the bottom fixing mechanism comprises a bottom plate, a slide groove is provided on the bottom plate, fixing pieces are slidably installed at both ends of the slide groove, and when the two sets of fixing pieces are brought together, the bottom rod is fixed, thereby facilitating the movement of the GNSS receiver.

[0007] Preferably, the fixing member includes an adjustment plate, which is slidably connected to the slide groove. An adjustment groove is provided on the upper side of the adjustment plate, a slider is slidably provided in the adjustment groove, and a vertical plate is provided on the upper end of the slider.

[0008] Preferably, a fixing plate is provided on one side of the vertical plate, and the fixing plate is an arc-shaped structure concave inward.

[0009] Preferably, a second screw rod is rotatably provided in the adjusting groove, and the second screw rod is threadedly connected to the slider.

[0010] Preferably, a screw rod 1 is rotatably provided in the slide groove, and both ends of the screw rod 1 are respectively threadedly connected to the two adjustment plates.

[0011] Preferably, a support is provided on one side of the adjustment plate, and a screw is threadedly connected to the upper end of the support.

[0012] Preferably, one end of the screw rod is plugged into a positioning hole provided on the upper end of the vertical plate.

[0013] Preferably, a middle plate is provided on the upper side of the bottom plate, and a socket is provided on the upper side of the middle plate.

[0014] Preferably, spikes are symmetrically and slidably mounted on both sides of the bottom plate, and the two spikes on one side are connected by a connecting rod.

[0015] Preferably, the lower end of the GNSS receiver is fixed inside the bottom rod by a positioning bolt.

[0016] The embodiment of the present invention provides a portable GNSS device for monitoring the deflection of a bridge main beam. Compared with the prior art, the device has the following advantages:

[0017] 1. The utility model fixes the bottom of the GNSS receiver through a bottom fixing mechanism, and the GNSS receiver can be moved arbitrarily after installation by moving the bottom plate. For bridge monitoring scenarios, it may be necessary to adjust the position of the GNSS receiver according to changes in construction progress, environmental factors, etc. to obtain the best data collection effect. The flexible and adjustable bottom fixing mechanism helps to better adapt to various installation environments and ensure that the equipment can be firmly placed in the ideal position. At the same time, the movable adjustment plate is used to move the vertical plate and the fixed plate, making the disassembly and assembly of the GNSS receiver more convenient, increasing the convenience and efficiency of the device.

[0018] 2. The utility model can be adjusted according to the size of the bottom rod of the GNSS receiver by sliding the two adjustment plates in the slide groove and the slider in the adjustment groove. This adjustable design enables the same fixing mechanism to be compatible with a variety of GNSS receivers of different specifications, increasing its versatility and flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic plan view of the overall structure of an embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of a GNSS receiver according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the bottom fixing mechanism structure of an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the disassembly of the fixing member and the bottom plate structure of an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the disassembled structure of the fixing member of an embodiment of the utility model;

[0026] Figure 7 This is a schematic diagram of the fixed plate structure of an embodiment of the utility model;

[0027] Figure 8 This is a schematic diagram of the bottom plate structure of an embodiment of the present utility model.

[0028] Reference numerals:

[0029] 1. GNSS receiver; 2. Bottom rod; 3. Positioning bolt; 4. Bottom plate; 5. Slide; 6. Screw rod 1; 7. Center plate; 8. Socket; 9. Connecting rod; 10. Spike; 11. Adjustment plate; 12. Adjustment slot; 13. Screw rod 2; 14. Slider; 15. Vertical plate; 16. Fixed plate; 17. Support; 18. Screw; 19. Positioning hole. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0031] Please refer to Figures 1-8 The embodiment of the utility model provides a portable GNSS device for monitoring the deflection of a bridge main beam, including a GNSS receiver 1. A bottom rod 2 is slidingly provided at the lower end of the GNSS receiver 1. The GNSS receiver 1 can slide up and down in the bottom rod 2 to adjust the use height.

[0032] After adjustment, the lower end of the GNSS receiver 1 is fixed inside the bottom rod 2 by the positioning bolt 3 , so that the GNSS receiver 1 remains stable.

[0033] In order to make the installation of the GNSS receiver 1 more convenient, the lower end of the bottom rod 2 is fixed by a bottom fixing mechanism. The bottom fixing mechanism includes a bottom plate 4. A slide groove 5 is provided on the bottom plate 4. Fixing parts are slidably installed at both ends of the slide groove 5. When the two sets of fixing parts are close together, the bottom rod 2 is fixed.

[0034] Specifically, the fixing part includes an adjusting plate 11, which is slidably connected to the slide groove 5. An adjusting groove 12 is provided on the upper side of the adjusting plate 11, and a slider 14 is slidably provided in the adjusting groove 12. A vertical plate 15 is provided on the upper end of the slider 14. According to the size of the bottom rod 2, the two sliders 14 can be slid first to bring the two vertical plates 15 closer to fix the bottom rod 2 located between the two vertical plates 15. If the size of the bottom rod 2 is still large at this time, the two adjusting plates 11 can be slid into the slide groove 5 again, and the position of the vertical plate 15 can be adjusted for a second time to meet the fixing requirements of bottom rods 2 of different sizes.

[0035] In addition, a fixing plate 16 is provided on one side of the vertical plate 15. The fixing plate 16 is an arc-shaped structure that is recessed inward. The arc-shaped fixing plate 16 is in contact with the bottom rod 2, which further improves the fixing effect.

[0036] At the same time, a second screw rod 13 is rotatably provided in the adjustment groove 12 , and the second screw rod 13 is threadedly connected to the slider 14 . The rotation of the second screw rod 13 can make the slider 14 and the vertical plate 15 slide stably in the adjustment groove 12 , thereby improving the stability of the vertical plate 15 .

[0037] Furthermore, a screw rod 6 is rotatably provided in the slide groove 5, and the two ends of the screw rod 6 are respectively threadedly connected to the two adjustment plates 11. The screw rod 6 is a bidirectional screw rod with opposite threads on the left and right sides symmetrical with the center. When the screw rod 6 rotates, the two adjustment plates 11 can move simultaneously, thereby improving the fixing efficiency of the bottom rod 2.

[0038] In order to improve the efficiency of fixation, a center plate 7 is provided on the upper side of the base plate 4. A socket 8 is provided on the upper side of the center plate 7. The bottom rod 2 can be inserted into the socket 8, which facilitates the fixing plate 16 to fix the bottom rod 2. This design improves the convenience of installation and adjustment of the GNSS receiver 1.

[0039] Furthermore, in order to improve the fixing effect of the bottom rod 2, a support 17 is provided on one side of the adjustment plate 11, and the upper end of the support 17 is threadedly connected with a screw 18, and one end of the screw 18 is plugged into a positioning hole 19 opened at the upper end of the vertical plate 15. When the fixing plate 16 fixes the bottom rod 2, the screw 18 is rotated and the screw 18 is inserted into the positioning hole 19 to enhance the fixing effect of the fixing plate 16.

[0040] When the GNSS receiver 1 needs to be moved to a new monitoring point or for maintenance, it is only necessary to reverse the screw rod 1 6 and the screw rod 2 13 to quickly release the clamping force on the bottom rod 2, thereby conveniently removing the GNSS receiver 1 from the current position, allowing the GNSS receiver 1 to be efficiently disassembled and assembled.

[0041] like Figure 8 As shown, spikes 10 are symmetrically and slidably installed on both sides of the base plate 4, and the two spikes 10 on one side are connected by a connecting rod 9. When the base plate 4 does not move, the spikes 10 can be inserted into the soil to improve the stability of the base plate 4.

[0042] The overall structure is compact and easy to carry to the construction site. At the same time, all components can be disassembled for easy storage and transportation, reducing the space occupied.

[0043] In summary, the working principle of a portable GNSS device for monitoring the deflection of a bridge main beam in an embodiment of the present invention is as follows: when the location for installing the GNSS receiver 1 is selected, the base plate 4 is moved to the monitoring point, and the bottom rod 2 is inserted into the socket 8. According to the size of the bottom rod 2, the slider 14 is moved to fix the bottom rod 2 with the fixing plate 16. If the size of the bottom rod 2 is too large, the position of the adjusting plate 11 can be adjusted again. After installation, when the monitoring point needs to be changed, the GNSS receiver 1 can be moved by moving the base plate 4, which makes the use of the GNSS receiver 1 more convenient and facilitates the disassembly and assembly of the GNSS receiver 1.

[0044] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A portable GNSS device for monitoring the deflection of a bridge main beam, comprising a GNSS receiver (1), characterized in that: The lower end of the GNSS receiver (1) is slidably provided with a bottom rod (2), the lower end of the bottom rod (2) is fixed by a bottom fixing mechanism, and the bottom fixing mechanism includes a bottom plate (4), a slide groove (5) is provided on the bottom plate (4), and fixing parts are slidably installed at both ends of the slide groove (5). When the two sets of fixing parts are brought together, the bottom rod (2) is fixed, so that the GNSS receiver (1) can be moved easily.

2. The portable GNSS device for monitoring bridge girder deflection according to claim 1 is characterized in that: The fixing member comprises an adjusting plate (11), the adjusting plate (11) is slidably connected to the slide groove (5), an adjusting groove (12) is provided on the upper side of the adjusting plate (11), a sliding block (14) is slidably provided in the adjusting groove (12), and a vertical plate (15) is provided on the upper end of the sliding block (14).

3. The portable GNSS device for monitoring bridge girder deflection according to claim 2 is characterized in that: A fixing plate (16) is provided on one side of the vertical plate (15), and the fixing plate (16) is an arc-shaped structure that is recessed inward.

4. The portable GNSS device for monitoring bridge girder deflection according to claim 3 is characterized by: A second screw rod (13) is rotatably provided in the adjustment groove (12), and the second screw rod (13) is threadedly connected to the slider (14).

5. The portable GNSS device for monitoring bridge girder deflection according to claim 4 is characterized in that: A screw rod (6) is rotatably arranged in the slide groove (5), and both ends of the screw rod (6) are respectively threadedly connected to the two adjustment plates (11).

6. The portable GNSS device for monitoring bridge girder deflection according to claim 5 is characterized by: A support (17) is provided on one side of the adjustment plate (11), and a screw (18) is threadedly connected to the upper end of the support (17).

7. The portable GNSS device for monitoring bridge girder deflection according to claim 6 is characterized by: One end of the screw rod (18) is plugged into a positioning hole (19) provided at the upper end of the vertical plate (15).

8. The portable GNSS device for monitoring bridge girder deflection according to claim 1 is characterized in that: A middle plate (7) is provided on the upper side of the bottom plate (4), and a socket (8) is provided on the upper side of the middle plate (7).

9. The portable GNSS device for monitoring bridge girder deflection according to claim 8 is characterized in that: Spikes (10) are symmetrically and slidably mounted on both sides of the bottom plate (4), and the two spikes (10) on one side are connected by a connecting rod (9).

10. The portable GNSS device for monitoring bridge girder deflection according to claim 1 is characterized in that: The lower end of the GNSS receiver (1) is fixed inside the bottom rod (2) via a positioning bolt (3).

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