Isoceles toggle type three-way joint gauge

Abstract

The utility model belongs to the technical field of geological survey, and discloses an isosceles toggle type three-way joint meter which comprises an embedded 1 # angle sensor, an exposed 2 # angle sensor, a middle shaft rod, a crossing toggle, an exposed 3 # angle sensor, a two-way rotating shaft piece, a base, an anchoring rib and a protective cover. The base is fixed on a toe board through an anchoring rib, the base is connected with the spanning toggle joints through the two-way rotating shaft piece, the two spanning toggle joints are connected through the middle shaft rod, and the embedded 1 # angle sensor is arranged in the base; the exposed 3 # angle sensor and the exposed 2 # angle sensor are arranged at the connecting positions of the two-direction rotating shaft pieces on the two sides and the crossing toggle joint correspondingly, and the protection cover is arranged on the outermost side of the device. The isosceles toggle type three-way joint meter provided by the utility model is novel in structure, adopts an isosceles arm long rotating toggle connection structure, achieves the purpose of observing and monitoring the three-way deformation of peripheral joints by measuring the angle of the toggle, and has the characteristics of high precision, small error and accurate measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of geological measurement, and particularly relates to an isosceles toggle type three-way joint meter. Background Art

[0002] The peripheral joint is the joint between the concrete face plate and the toe plate, and is also the part of the concrete face rockfill dam that is very sensitive to deformation and prone to leakage. The deformation of the peripheral joint is an important basis for understanding the safety of the water-stop structure between the concrete face plate and the toe plate, and plays a key role in the evaluation of the anti-seepage effect of the concrete face dam.

[0003] The deformation of the peripheral joints of concrete face rockfill dams is usually monitored by a three-dimensional joint meter. Generally speaking, the structural form of the three-dimensional joint meter is directly related to the accuracy of the deformation of the peripheral joints. However, the three-dimensional joint meters in the prior art have the defects of complex structure, large measurement error, cumbersome installation, large size and outer protective shell. Therefore, how to improve the existing three-dimensional joint meter structure to accurately grasp the structural safety of the face rockfill dam has become an urgent problem to be solved. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides an isosceles toggle type three-way joint meter.

[0005] The utility model is implemented as follows: an isosceles elbow-joint three-way joint meter, the isosceles elbow-joint three-way joint meter comprises: an embedded 1# angle sensor, an exposed 2# angle sensor, an intermediate shaft, a spanning elbow, an exposed 3# angle sensor, a two-way rotating shaft, a base, anchoring bars, and a protective cover; the base is fixed on a toe plate through the anchoring bars, the base is connected to the spanning elbow through a two-way rotating shaft, the middle of the two spanning elbows are connected through the intermediate shaft, the embedded 1# angle sensor is arranged in the base, the exposed 3# angle sensor and the exposed 2# angle sensor are respectively arranged at the connection between the two-way rotating shaft and the spanning elbow on both sides, and the protective cover is arranged at the outermost side of the device.

[0006] Furthermore, the length and diameter of the embedded 1# angle sensor, the exposed 2# angle sensor and the exposed 3# angle sensor are less than 40 mm, the rotation axis is 6 mm, the range is 360°, and the resolution is 10 -4 , linear accuracy is 0.1% FS.

[0007] Furthermore, the line connecting the midpoints of the anchor bars on both sides is perpendicular to the peripheral seam, and the distance between the two midpoints is controlled between 40 and 50 cm.

[0008] Furthermore, the exposed 2# angle sensor and the exposed 3# angle sensor can be replaced by an inclinometer, the inclinometer has an instrument outer diameter of 32 mm, an instrument height of 120 mm, a measuring direction of the X direction, a measuring range of ±30°, a sensitivity of ≤9", a measuring accuracy of ≤0.05% FS, and is made of stainless steel.

[0009] Furthermore, the intermediate shaft, the spanning toggle, the two-way rotating shaft and the base are all made of stainless steel.

[0010] Furthermore, the single arm across the toggle is 30 cm long and φ35 in diameter.

[0011] Furthermore, the anchor bar is a threaded steel bar with a length of 15 cm and a diameter of φ22.

[0012] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the utility model are as follows:

[0013] First, the peripheral joint is the joint between the concrete face plate and the toe plate. It is also the part of the concrete face rockfill dam that is very sensitive to deformation and prone to leakage. Whether the peripheral joint water-stopping structure is rigorously and scientifically designed and whether the water-stopping construction quality is reliable and excellent plays a key role in whether the entire dam can prevent leakage well. Because the concrete face rockfill dam will cause panel deformation during the three stages of construction, water storage, and operation, the peripheral joint will produce three-dimensional displacement, namely opening, settlement, and tangential displacement. The water stop of the peripheral joint is usually rubber and plastic filler water stop on the surface and copper water stop on the bottom. Excessive deformation of the peripheral joint can easily damage the rubber water stop and copper water stop of the peripheral joint. Therefore, the deformation of the peripheral joint in three directions is the most concerned monitoring quantity in the monitoring of the face plate dam, and it is an important indicator for evaluating the safety of the peripheral joint water stop structure.

[0014] In order to avoid damaging the water-stopping structure of the surrounding joints or reducing the water cut-off margin, the deformation observation of the three directions of the perimeter joints of the concrete face rockfill dam is usually installed in a straddling manner at both ends of the joint surface. At present, three types of three-way joint meters are commonly used, namely, the integral flexible wire displacement meter, the integral rigid tie rod displacement meter and the split rigid tie rod displacement meter. The three types of three-way joint meters are composed of three sensors for measuring linear displacement. The first type of three-way joint meter with an integral flexible wire displacement meter has a small convergence point of the three tensioning wires, which is close to the ideal space point, and the friction is very small, so the accuracy is relatively high, but the wire type is thin and easy to break, and the disturbance of reservoir water has a more serious impact on it; the second type of three-way joint meter with an integral rigid tie rod displacement meter (the convergence point of the three displacement sensors is poor, and the error is large; the third type of three-way joint meter with a split rigid tie rod displacement meter has three displacement sensors that are measured separately, and the error is not accumulated. Although the measurement accuracy of a single instrument is high, its vector value contains vector components of the other two deformation directions.

[0015] Based on the peripheral seam water-stopping structure, the prior art overcomes the defects of the three conventional three-way seam meters, namely, complex structure, large measurement error, complicated installation, and large size and outer protective shell.

[0016] The isosceles elbow joint three-way joint meter provided by the utility model has a novel structure, adopts an isosceles arm length rotating elbow joint connection structure, and realizes the purpose of observing the three-way deformation monitoring of the peripheral joint by measuring the angle at the elbow joint, and has the characteristics of high precision, small error and accurate measurement. The observation method and principle of the utility model are completely different from those of the traditional three-way joint meter, and overcomes the problem of large system error of the traditional three-way joint meter.

[0017] Secondly, the isosceles elbow-jointed three-way seam meter provided by the utility model measures the angle values ​​of three parts through angle sensors and converts them into deformation vector values ​​of three directions of the peripheral seam through conversion formulas. The calculation method is simple and practical.

[0018] The isosceles elbow-jointed three-way joint meter provided by the utility model has a simple structure and a small size, is easy and reliable to install, has the characteristics of compact structure, high water pressure resistance and little influence by reservoir water disturbance, and overcomes the problems of traditional three-way joint meters having many structural parts, complex installation and burial, and being greatly affected by reservoir water disturbance.

[0019] Third, the expected benefits and commercial value of the technical solution of the utility model after transformation are:

[0020] The utility model provides an isosceles elbow-jointed three-way joint meter, which improves the existing peripheral joint three-way joint meter structure and can accurately and efficiently calculate the vector deformation of the peripheral joint in three directions, thus providing a theoretical basis and technical support for more objectively and accurately evaluating the anti-seepage effect of concrete panel rockfill dams in the future.

[0021] Fourth, the technical solution of this utility model fills the technical gap in the industry at home and abroad:

[0022] The utility model aims at the defects of the existing three-way joint meter, such as complex structure, large measurement error, complicated installation, large size and outer protective shell. By adopting isosceles rotating toggle to improve the structure of the existing three-way joint meter, supplemented by the measurement and calculation method of the three angles of the horizontal rotation axis of the toe plate, the defects of the existing three-way displacement structure of the peripheral seam, such as complex structure, large measurement error, complicated installation, large size and outer protective shell, are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is provided in an embodiment of the present invention, and is a schematic cross-sectional view of an isosceles toggle-jointed three-way joint meter provided in an embedded installation on a peripheral joint of a typical concrete panel rockfill dam.

[0024] Figure 2 The utility model is provided in the embodiment of the present invention. The utility model is provided in the embodiment of the present invention. The utility model is provided in the embodiment of the present invention.

[0025] Figure 3 It is a front view of the second arrangement provided by an embodiment of the utility model.

[0026] Figure 4 It is a top view of the second arrangement provided by an embodiment of the utility model.

[0027] Figure 5 It is a front view of the third arrangement provided by an embodiment of the utility model.

[0028] Figure 6 It is a top view of the third arrangement provided by an embodiment of the utility model.

[0029] Figure 7 This is a structural diagram of an integrated three-way joint meter of a flexible wire displacement meter provided by an embodiment of the present invention.

[0030] Figure 8 The present invention provides a structural diagram of an integral three-way joint meter of a rigid pull rod displacement meter.

[0031] Fig. 9 The present invention provides a structural diagram of a split-type three-way joint meter of a rigid pull rod displacement meter.

[0032] In the figure: 1. toe board; 2. panel; 3. peripheral seam; 4. rubber and plastic filler water stop; 5. embedded 1# angle sensor; 6. exposed 2# angle sensor; 7. intermediate shaft; 8. spanning elbow joint, 9. exposed 3# angle sensor; 10. two-way rotating shaft; 11. base; 12. anchoring ribs; 13. protective cover; 14. 1# inclinometer; 15. 2# inclinometer. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in combination with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0034] like Figure 1As shown, the isosceles elbow-jointed three-way joint meter provided by the embodiment of the utility model includes: an embedded 1# angle sensor 5, an exposed 2# angle sensor 6, an intermediate shaft 7, a spanning elbow 8, an exposed 3# angle sensor 9, a two-way rotating shaft 10, a base 11, anchoring bars 12, and a protective cover 13; the base 11 is fixed to the toe plate 1 through the anchoring bars 12, the base 11 is connected to the spanning elbow 8 through the two-way rotating shaft 10, the two spanning elbows 8 are connected in the middle through the intermediate shaft 7, the embedded 1# angle sensor 5 is arranged in the base 11, the exposed 3# angle sensor 9 and the exposed 2# angle sensor 6 are respectively arranged at the connection between the two-way rotating shaft 10 and the spanning elbow 8 on both sides, and the protective cover 13 is arranged at the outermost side of the device.

[0035] like Figure 2 As shown, the working principle and use method of the utility model are as follows:

[0036] S101, during the pouring construction of the toe plate and the face plate of the concrete face rockfill dam, the designed peripheral joint monitoring position shall be laid out, 4 anchor bars 12 shall be embedded on one side of the toe plate 1, and 4 anchor bars 12 shall be embedded on one side of the face plate 2. The line connecting the midpoints of the anchor bars 12 on both sides shall be perpendicular to the peripheral joint 3, and the distance between the two midpoints shall be controlled between 40 and 50 cm.

[0037] S102, after the installation of the perimeter seam rubber and plastic filler waterproofing 4 is completed, the isosceles toggle type three-way joint gauge can be installed. First, the base 12 is fixed on the anchor bar 12 on one side of the toe plate 1 through a nut, and then the embedded 1# angle sensor 5 is installed in the base 12, and then the two-way rotating shaft 10 is installed on the 3# angle sensor 9. The base 12 and the two-way rotating shaft 10 on one side of the panel 2 are installed in turn in the same installation method.

[0038] S103, assemble the two spanning elbow joints 8 through the intermediate shaft 7, and install the two ends of the assembled spanning elbow joint 8 on the two-way rotating shaft 10 on one side of the toe plate 1 and the panel 2 respectively. After installation, install the exposed 2# angle sensor 6 and the exposed 3# angle sensor 9 on the two-way rotating shaft 10 on both sides and the joint of the spanning elbow joint 8 respectively, read the angle values ​​of the embedded 1# angle sensor 5, 2# angle sensor 6 and the exposed 3# angle sensor 9 through the secondary instrument, take the toe plate 1 side of the isosceles elbow joint three-way joint meter as the fixed point, and obtain the initial value of the displacement point on the side of the panel 2 through the calculation formula. At this point, the installation of the isosceles elbow joint three-way joint meter is completed.

[0039] S104, in order to ensure that the sensor is not disturbed by the outside, protective covers 13 are installed on both sides of the toe plate 1 and the face plate 2 respectively, and the isosceles elbow-jointed three-way joint meter and related components are not allowed to be knocked during installation.

[0040] like Figure 3 and Figure 4As shown, it is the second arrangement of the utility model.

[0041] The toe plate 1 is a concrete toe plate as the relatively fixed block to be measured; the panel 2 is the deformation block to be measured; the rubber and plastic filler water stop 4 is set on the peripheral seam 3;

[0042] The parameters of the embedded 1# angle sensor 5, the exposed 2# angle sensor 6 and the exposed 3# angle sensor 9 are:

[0043] Length and diameter <40mm, axis 6mm, range: 360°, resolution: 10 -4 , Linear accuracy: 0.1% FS, Water pressure resistance: stainless steel;

[0044] The diameter of the intermediate shaft 7 is φ8 and is made of stainless steel;

[0045] The single arm across the toggle 8 is 30 cm long, φ35 in diameter, and made of stainless steel;

[0046] The material of the two-way rotating shaft 10 is stainless steel;

[0047] The base 11 is made of stainless steel;

[0048] The anchor bar 12 is a threaded steel bar with a length of 15 cm and a diameter of φ22.

[0049] like Figure 5 and Figure 6 Shown is the third arrangement of the present utility model.

[0050] The toe plate 1 is a concrete toe plate as the relatively fixed block to be measured; the panel 2 is the deformation block to be measured; the rubber and plastic filler water stop 4 is set on the peripheral seam 3;

[0051] The parameters of embedded 1# angle sensor 5 are:

[0052] Length and diameter <40mm, axis 6mm, range: 360°, resolution: 10 -4 , Linear accuracy: 0.1% FS, Water pressure resistance: stainless steel;

[0053] The parameters of the 1# inclinometer 14 and the 2# inclinometer 15 are:

[0054] Instrument outer diameter 32mm, instrument height 120mm, measuring direction X direction, measuring range ±30°, sensitivity ≤9", measuring accuracy ≤0.05%FS, stainless steel.

[0055] The diameter of the intermediate shaft 7 is φ8 and is made of stainless steel;

[0056] The single arm across the toggle 8 is 30 cm long, φ35 in diameter, and made of stainless steel;

[0057] The material of the two-way rotating shaft 10 is stainless steel;

[0058] The base 11 is made of stainless steel;

[0059] The anchor bar 12 is a threaded steel bar with a length of 15 cm and a diameter of φ22.

[0060] The utility model measures the three angles of the isosceles vertical rotating toggle and the horizontal rotating axis, calculates the three-dimensional deformation data of the peripheral seam opening, settlement and shearing, and adopts a high-precision angle sensor or inclinometer with a measuring range of 0 to 90°, an accuracy of ±0.1% FS, and a repeatability of 0.01°. The three-dimensional displacement of the peripheral seam is calculated by the change of the angles of the three assembled angle sensors (or one angle sensor and two inclinometers). During the calculation process, the angle measurement errors of the three angle sensors will be transmitted to the three-dimensional displacement values ​​of the peripheral seam. The overall error of the complete set of equipment caused by the sensitivity error of the sensor itself is <0.25mm, which meets the accuracy requirements of the peripheral seam observation; the principle and structure of the peripheral seam measurement are simple and reliable, and the installation and observation are simple and easy. At the same time, it has the characteristics of strong applicability and low cost, and has a high promotion value.

[0061] like Figure 7 As shown, the utility model aims to solve the problems that the steel wire of the flexible steel wire displacement meter integrated three-way joint meter is thin and easy to break, and the disturbance of reservoir water has a serious impact on the measurement accuracy of the instrument; and Figure 8 The rigid pull rod displacement meter integrated three-way joint meter shown in the figure has poor centralization of the convergence point, and the rigid pull rod has large friction during the extension and retraction process, which affects the measurement accuracy. A movable spanning toggle is used to replace the steel wire and the adjusting screw. On the one hand, the instrument rigidity is greatly improved, the disturbance of the reservoir water level on the instrument accuracy is reduced, and the defects of the flexible steel wire displacement meter integrated three-way joint meter are solved. On the other hand, the movable spanning toggle is more flexible, which overcomes the influence of the large friction of the rigid pull rod displacement meter integrated three-way joint meter on the measurement accuracy during the extension and retraction process.

[0062] like Fig. 9 As shown, the utility model aims at solving the shortcomings of a rigid pull rod displacement meter split-type three-way joint meter, which has high measurement accuracy for a single instrument but low overall measurement accuracy, by adopting an intermediate shaft rod and a spanning elbow joint to ensure the integrity of the instrument, and by measuring the spatial coordinates of the measuring points before and after the deformation, the calculation of the deformation vectors in three directions is realized.

[0063] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0064] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention shall be covered by the protection scope of the present invention.

Claims

1. An isosceles toggle three-way joint meter, characterized in that: The isosceles elbow-jointed three-way joint meter comprises: an embedded 1# angle sensor, an exposed 2# angle sensor, an intermediate shaft, a spanning elbow, an exposed 3# angle sensor, a two-way rotating shaft, a base, anchoring bars, and a protective cover; the base is fixed to the toe plate through the anchoring bars, the base is connected to the spanning elbow through the two-way rotating shaft, the two spanning elbows are connected in the middle through the intermediate shaft, the embedded 1# angle sensor is arranged in the base, the exposed 3# angle sensor and the exposed 2# angle sensor are respectively arranged at the connection between the two-way rotating shaft and the spanning elbow on both sides, and the protective cover is arranged at the outermost side of the device.

2. The isosceles toggle three-way joint meter according to claim 1, characterized in that: The length and diameter of the embedded 1# angle sensor, exposed 2# angle sensor and exposed 3# angle sensor are less than 40mm, the axis is 6mm, the range is 360°, and the resolution is 10 -4 , linear accuracy is 0.1% FS.

3. The isosceles toggle three-way joint meter according to claim 1, characterized in that: The line connecting the midpoints of the anchor bars on both sides is perpendicular to the peripheral seam, and the distance between the two midpoints is controlled between 40 and 50 cm.

4. The isosceles toggle three-way joint meter according to claim 1, characterized in that: The exposed 2# angle sensor and exposed 3# angle sensor can be replaced by an inclinometer. The inclinometer has an outer diameter of 32mm, a height of 120mm, a measuring direction of X direction, a measuring range of ±30°, a sensitivity of ≤9", a measuring accuracy of ≤0.05% FS, and is made of stainless steel.

5. The isosceles toggle three-way joint meter according to claim 1, characterized in that: The intermediate shaft, spanning wrist joint, two-way rotating shaft and base are all made of stainless steel.

6. The isosceles toggle three-way joint meter according to claim 1, characterized in that: The single arm across the elbow joint is 30cm long and φ35 in diameter.

7. The isosceles toggle three-way joint meter according to claim 1, characterized in that: The anchor bar is a threaded steel bar with a length of 15cm and a diameter of φ22.

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