A segmental inclinometer and a series automatic inclinometer device

Abstract

This utility model relates to a segmental inclinometer and a series-connected automatic inclinometer device, comprising a base plate with connecting holes at both ends. A measuring sensor and a support pulley assembly are respectively mounted on the base plate along its length, with the measuring sensor connected to the main measuring line. A mounting plate is vertically mounted on the base plate, with a receiving through hole corresponding to the mounting plate position, and the measuring sensor is mounted on the mounting plate. A support pulley assembly is provided on each side of the base plate, with the pulleys in the two support pulley assemblies staggered. A housing is provided on each side of the base plate, with a threading hole at each end of the housing for the main measuring line to pass through, and an clearance opening corresponding to the support pulley assembly position. The series-connected automatic inclinometer device includes multiple segmental inclinometers as described above, connected in series via flexible connectors. It has advantages such as reasonable structural design, convenient operation, simultaneous acquisition of data from multiple measuring points, high degree of automation, and accurate measurement.

Description

Technical Field

[0001] This utility model relates to the field of deep foundation pit monitoring technology, specifically to a segmental inclinometer and a series automatic inclinometer device. Background Technology

[0002] Foundation pit monitoring refers to the engineering process of observing and analyzing soil and rock properties, displacement of support structures, and changes in the surrounding environment during foundation pit excavation and underground engineering construction. Data feedback guides construction and achieves information-based management. Deep horizontal displacement monitoring of deep foundation pit support piles (walls) is one of the most direct and effective monitoring items reflecting the safety status of the foundation pit. Generally, deep horizontal displacement monitoring of deep foundation pit support piles (walls) requires pre-embedding inclinometer tubes during the construction of retaining piles or continuous walls. Monitoring is then achieved by using an inclinometer to test the pre-embedded inclinometer tubes during foundation pit excavation.

[0003] Currently, most inclinometers used both domestically and internationally require manual operation and monitoring. Automated inclinometer technology is still immature and incomplete. Even though many techniques for manually measuring deep horizontal displacement have been proposed, numerous problems remain. For example, personnel monitoring requires working near the edge of the foundation pit, posing a significant safety challenge; data on deep horizontal displacement cannot be obtained promptly and accurately; and when the number of monitoring points is large, additional personnel are needed, increasing labor costs. Therefore, automated monitoring of deep horizontal displacement in deep foundation pit support piles (walls) is an urgent problem to be solved.

[0004] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art and provide a segmental inclinometer and a series automatic inclinometer device. By optimizing and improving the inclinometer, multiple segmental inclinometers are connected in series, which has the advantages of reasonable structural design, convenient operation, simultaneous acquisition of data from multiple measurement points, high degree of automation, and accurate measurement.

[0006] This utility model achieves the above objectives by adopting the following technical solutions: A segmental inclinometer includes a base plate with connection holes at both ends. A measuring sensor and a support pulley assembly are respectively provided on the base plate along its length, with the measuring sensor connected to a main measuring line. A mounting plate is vertically provided on the base plate, and a receiving through hole is provided at the corresponding position of the mounting plate; the measuring sensor is mounted on the mounting plate. A support pulley assembly is provided on each side of the base plate, with the pulleys in the two support pulley assemblies being staggered. A housing is provided on each side of the base plate, with a threading hole at each end of the housing for the main measuring line to pass through, and an clearance opening at the corresponding position of the support pulley assembly.

[0007] The mounting plate is provided with a plurality of mounting holes A at intervals. The measuring sensor is mounted on the mounting holes A by threaded connection. The base plate is provided with two mounting holes B at intervals at both ends. The housing is mounted on the mounting holes B by threaded connection.

[0008] The supporting pulley assembly includes a mounting base, which is threadedly mounted on a base plate. A pulley mounting plate is rotatably mounted on the mounting base, and a pulley is rotatably mounted on the pulley mounting plate. A spring is provided between the pulley mounting plate and the mounting base.

[0009] The measurement sensor is connected to the main measurement line via a male-female interface.

[0010] The series-connected automatic inclinometer includes multiple segmental inclinometers as described above. The multiple segmental inclinometers are designed in series, and two adjacent segmental inclinometers are connected in series through a flexible connector. The two ends of the flexible connector are respectively set on the connection hole. The measurement sensor in each segmental inclinometer is connected to the measurement main line through a male-female interface. The measurement main line is connected to the data acquisition terminal.

[0011] The flexible connector includes a steel wire rope, and steel wire rope clips are provided at both ends of the steel wire rope.

[0012] The segmental inclinometer located at the front end is connected to a counterweight via a steel wire rope.

[0013] The present invention, by adopting the above-described structure, can bring the following beneficial effects: The inclinometer structure has been completely redesigned and optimized, resulting in a more compact and rational design. It also enables the series connection of multiple inclinometers, thereby facilitating the simultaneous automated data acquisition of multiple measurement points. This reduces labor intensity, minimizes measurement errors caused by human operation, and improves measurement efficiency and accuracy. Attached Figure Description

[0014] Figure 1 This is an exploded view of the segmental inclinometer of this utility model; Figure 2This is a schematic diagram of the internal structure of the segmental inclinometer of this utility model; Figure 3 This is a schematic diagram of the structure of the pulley assembly of this utility model; Figure 4 This is a schematic diagram of the segmental inclinometer of this utility model; Figure 5 This is the front view of the segmental inclinometer of this utility model; Figure 6 This is a schematic diagram of the structure of the series-connected automatic inclinometer device of this utility model; Figure 7 This is a schematic diagram showing the connection between two adjacent segmental inclinometers of this utility model; Figure 8 This is a schematic diagram showing the connection between the measuring sensor and the measuring main line of this utility model; Figure 9 This is a structural schematic diagram of the flexible connector of this utility model; Figure 10 This is a schematic diagram of the male-female connector of this utility model; Figure 11 This is a schematic diagram illustrating the calculation of this utility model; In the diagram, 1. Base plate, 2. Connecting hole, 3. Measuring sensor, 4. Support pulley assembly, 401. Mounting base, 402. Pulley mounting plate, 403. Pulley, 404. Spring, 5. Measuring main line, 6. Mounting plate, 7. Receiving through hole, 8. Housing, 9. Threading hole, 10. Clearance opening, 11. Mounting hole A, 12. Mounting hole B, 13. Flexible connector, 1301. Steel wire rope, 1302. Steel wire rope clip, 14. Snap fastener, 15. Data acquisition terminal, 16. Rope, 17. Counterweight, 18. Inclinometer tube. Detailed Implementation

[0015] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0017] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0018] Furthermore, the terms “front end,” “back end,” “side,” “A,” “B,” etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the location of the indicated technical feature.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "provided with," "set up," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] like Figure 1-5 As shown, a segmental inclinometer includes a base plate 1, which is typically designed as a thin plate, and the shape of the thin plate can be a cuboid. The four corners of the base plate 1 are rounded. Connecting holes 2 are respectively provided at both ends of the base plate 1. A measuring sensor 3 and a supporting pulley assembly 4 are respectively provided on the base plate 1 along its length direction. The measuring sensor 3 is connected to the measuring main line 5, specifically as shown... Figure 8 As shown, the main measuring line 5 is connected to the measuring sensor 3 via AA, BB, CC, and DD lines; a mounting plate 6 is vertically mounted on the substrate 1, and a receiving through hole 7 is provided at the corresponding position of the mounting plate 6. The design of the receiving through hole 7 allows a portion of the measuring sensor 3 to pass through the receiving through hole 7 to achieve a centered design, which helps to make the structural design more compact; the measuring sensor 3 is mounted on the mounting plate 6; a supporting pulley assembly 4 is provided on each side of the substrate 1, and the pulleys 403 in the two supporting pulley assemblies 4 are staggered. In practical applications, two identical supporting pulley assemblies 4 can be used, but the staggered setting can be achieved by installing them in opposite directions, which helps to reduce R&D and production costs; a shell 8 is provided on each side of the substrate 1, which can cover the measuring sensor 3 and play a good protective role. The two ends of the shell 8 are respectively provided with wire holes 9 for the main measuring line 5 to pass through, and the shell 8 is provided with clearance openings 10 at the positions of the supporting pulley assemblies 4. This application involves a completely new and optimized design of the inclinometer structure. This design not only makes the structure more compact and reasonable, but also enables the series connection of multiple inclinometers. This allows for the simultaneous automated data acquisition of multiple measurement points, reducing labor intensity, minimizing measurement errors caused by human operation, and improving measurement efficiency and accuracy.

[0021] The mounting plate 6 has multiple mounting holes A11 spaced apart. The measuring sensor 3 is mounted on the mounting holes A11 via threaded connection. The base plate 1 has two mounting holes B12 spaced apart at each end. The housing 8 is mounted on the mounting holes B12 via threaded connection. The mounting of each component is achieved through threaded connection.

[0022] The supporting pulley assembly 4 includes a mounting base 401, which is threadedly mounted on the base plate 1. A pulley mounting plate 402 is rotatably mounted on the mounting base 401, and a pulley 403 is rotatably mounted on the pulley mounting plate 402. A spring 404 is provided between the pulley mounting plate 402 and the mounting base 401. The spring 404 ejects the pulley mounting plate 402 outward to accommodate inclinometer tubes 18 of different sizes. The supporting pulley assembly 4 provides good guidance and support.

[0023] The measurement sensor 3 is connected to the measurement main line 5 via the female-female interface 14.

[0024] like Figure 6-10 As shown, the series-connected automatic inclinometer device includes multiple segmental inclinometers as described above. These segmental inclinometers are connected in series, with adjacent segments connected via a flexible connector 13. The two ends of the flexible connector 13 are respectively positioned on connection holes 2. The measuring sensor 3 in each segmental inclinometer is connected to the main measuring line 5 via a female-female interface 14. The main measuring line 5 is connected to a data acquisition terminal 15. By connecting multiple segmental inclinometers in series, simultaneous automatic monitoring of multiple measuring points can be achieved.

[0025] The flexible connector 13 includes a steel wire rope 1301, with steel wire rope clips 1302 at both ends. Connecting multiple segmental inclinometers in series using the steel wire rope 1301 not only meets measurement requirements but also allows for adaptive adjustment of the length of the steel wire rope 1301 according to the spacing between measurement points.

[0026] A counterweight 17 is connected to the segmental inclinometer located at the foremost end via a rope 16. The counterweight is designed to increase weight, thereby clearing any blockages inside the inclinometer tube 18 during installation and ensuring the overall stability of the segmental inclinometer.

[0027] Instructions for use of the series-connected automatic inclinometer device of this application: Each installed segmental inclinometer is connected in series via flexible connectors and then to the main measurement line. It is then placed into the pre-installed inclinometer tube 18, ensuring that the front of each segmental inclinometer faces the excavation pit. Finally, the main measurement line 5 is connected, protected, and numbered. The length of a single segmental inclinometer can be designed to be 23cm or 27cm. The spacing between adjacent segmental inclinometers is determined according to actual needs, with a default of 50cm.

[0028] For any given measurement point, the angle at the corresponding position of the measurement point is obtained, and the displacement value of the measurement point is calculated using the collected angles. The displacement and cumulative displacement values ​​are calculated by subtracting the initial displacement value from the segmental inclinometer and the displacement value from the later measurement, and a displacement curve is plotted to obtain the deep horizontal displacement of the support structure.

[0029] Fixed-length segment inclinometer measurement method:

[0030]

[0031]

[0032] In the formula: for The tilt angle value of the direction. for The angle of inclination of the direction; The slope is the sum of the slopes. For the angle of inclination; The displacement value is in mm. The unit is the length of a single segmental displacement, expressed in cm.

[0033] Adjustment method for fixed-length segment inclinometers: 1. Establish the error equation Assuming the displacement value after adjustment Combined Inclination Angle A linear relationship exists:

[0034] In the formula, represents the adjustment parameters to be determined.

[0035] The error equation is:

[0036] 2. Constructing the normal equations

[0037] Design Matrix and observation vector for: ,

[0038] The normal equation is:

[0039] Right now:

[0040] 3. Solving the equation

[0041] 4. Calculate the adjusted value (e.g.) Figure 11 (As shown)

[0042] The monitoring principle is as follows: First, the deep horizontal displacement of the support structure is mainly a change in tilt angle, which is measured... direction and The first method involves measuring the change in inclination angle and calculating the resultant inclination angle. Then, the horizontal displacement of the support structure is obtained by calculating the resultant inclination angle. The second method involves using a segmental inclinometer to cover the entire inclinometer tube at the same depth as the support structure. This allows for the collection of the overall displacement changes of the support structure. The resulting current displacement and cumulative displacement diagrams can intuitively show the deep horizontal displacement of the support structure.

[0043] This invention presents a series-connected automatic inclinometer device that, by connecting multiple self-made segmental inclinometers, enables precise monitoring of deep horizontal displacement of support structures at different depths and of different types. Based on the premise that the deep horizontal displacement of the support structure is primarily a change in inclination angle, it measures the inclination angle change of the entire support structure at time intervals, calculates the horizontal displacement from the inclination angle, and thus achieves precise monitoring of the deep horizontal displacement of the support structure. This method is simple to operate, economical, and convenient to manage, providing technical support for the continuous and efficient operation of earthwork excavation, structural safety, and the safety of the surrounding environment. It also provides a data foundation for timely implementation of relevant measures for changes in support structures of various depths and types.

[0044] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0045] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A segmental inclinometer, characterized in that, The system includes a substrate with connection holes at both ends. A measuring sensor and a support pulley assembly are respectively provided on the substrate along its length, with the measuring sensor connected to a main measuring line. A mounting plate is vertically mounted on the substrate, with a receiving through hole corresponding to the mounting plate position. The measuring sensor is mounted on the mounting plate. A support pulley assembly is provided on each side of the substrate, with the pulleys in the two support pulley assemblies being staggered. A housing is provided on each side of the substrate, with a wire-passing hole at each end of the housing for the main measuring line to pass through, and an avoidance opening corresponding to the support pulley assembly position.

2. The segmental inclinometer according to claim 1, characterized in that, The mounting plate is provided with a plurality of mounting holes A at intervals. The measuring sensor is mounted on the mounting holes A by threaded connection. The base plate is provided with two mounting holes B at intervals at both ends. The housing is mounted on the mounting holes B by threaded connection.

3. A segmental inclinometer according to claim 2, characterized in that, The supporting pulley assembly includes a mounting base, which is threadedly mounted on a base plate. A pulley mounting plate is rotatably mounted on the mounting base, and a pulley is rotatably mounted on the pulley mounting plate. A spring is provided between the pulley mounting plate and the mounting base.

4. A segmental inclinometer according to claim 3, characterized in that, The measurement sensor is connected to the main measurement line via a male-female interface.

5. A series-connected automatic inclinometer, characterized in that, Including the segmental inclinometer as described in any one of claims 1-4, multiple segmental inclinometers are designed in series, two adjacent segmental inclinometers are connected in series by a flexible connector, the two ends of the flexible connector are respectively set on the connection hole, the measurement sensor in each segmental inclinometer is connected to the measurement main line through a male-female interface, and the measurement main line is connected to the data acquisition terminal.

6. The series-connected automatic inclinometer device according to claim 5, characterized in that, The flexible connector includes a steel wire rope, and steel wire rope clips are provided at both ends of the steel wire rope.

7. The series-connected automatic inclinometer device according to claim 6, characterized in that, The segmental inclinometer located at the front end is connected to a counterweight via a steel wire rope.

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