A grouting lifting monitoring device convenient to install

Abstract

The utility model discloses a grouting lifting monitoring device convenient to installation, including tripod support, and the tripod support includes base and the multiple telescopic legs of symmetrical setting at the base bottom, and the vertical vertical rod is fixedly arranged in the base top center, and the horizontal telescopic cross bar is connected through the scaffold fastener on the vertical rod, and the one end of telescopic cross bar is provided with the mounting seat away from the base, and the micrometer is connected through the magnetic table seat on the mounting seat, and the micrometer's measuring needle bottom is provided with the glass plate, and the glass plate sets up in the concrete cover heavy top, and the telescopic inclined strut is arranged between the one end of telescopic support close to the base and the vertical rod. The lifting monitoring device of the utility model has the characteristics such as convenient and stable reliable of dismounting and operating, is convenient for the quick conversion monitoring position in the grouting construction, reduces the installation time and the artificial cost, and effectively improves the monitoring frequency.

Description

Technical Field

[0001] This utility model relates to the field of grouting uplift monitoring technology, and specifically to a grouting uplift monitoring device that is easy to install. Background Technology

[0002] In the field of water conservancy and hydropower engineering construction, grouting is a common construction step. During the grouting process, the hydraulic pressure applied to the grouting medium may cause displacement, or "uplift." Excessive uplift can not only damage the original geological structure or rock mass integrity, but may also cause harmful effects such as cracking, uneven settlement, or even structural instability. Therefore, to ensure project safety, uplift monitoring devices need to be installed in the grouting area.

[0003] Traditional methods of deploying uplift detection devices typically require installation on anchor pipes, a complex and cumbersome process. Generally, one device is placed for every 20 or more grouting holes. This low-density deployment results in numerous gaps in the monitoring range, making it impossible to comprehensively and accurately grasp the uplift deformation situation in the grouting area. Furthermore, grouting construction itself is a concealed underground project with extremely high complexity and uncertainty. In the underground environment, geological conditions are complex and variable, with numerous unpredictable factors such as rock fissures and soil pores. Construction personnel cannot anticipate what they will encounter around each grouting hole, and the lack of uplift deformation monitoring devices further hinders the detection of these unforeseen risks, making effective monitoring and control impossible. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a grouting lifting monitoring device that is easy to install.

[0005] A grouting lifting monitoring device that is easy to install includes a tripod, which includes a base and multiple telescopic legs symmetrically arranged at the bottom of the base. A vertical pole is fixedly installed at the center of the top of the base. A horizontal telescopic crossbar is connected to the pole via scaffolding fasteners. A mounting base is provided at the end of the telescopic crossbar away from the base. A micrometer is connected to the mounting base via a magnetic base. A glass plate is provided at the bottom of the micrometer's probe. The glass plate is placed on top of the concrete cover. A telescopic diagonal brace is provided between the end of the telescopic support near the base and the pole.

[0006] A further technical solution is as follows: the telescopic crossbar, telescopic support leg, and telescopic diagonal brace all include an outer tube and an inner tube set inside the outer tube. The inner tube can slide relative to the axis of the outer tube. Multiple adjustment holes are opened on the outer tube and the inner tube along their axial direction, and adjustment bolts and adjustment nuts are connected to the corresponding adjustment holes.

[0007] A further technical solution is: the mounting base is made of square-section steel, the inner diameter of the steel is matched with the outer diameter of the inner tube of the telescopic pole, and the mounting base and the inner tube of the telescopic pole are fixed by mounting bolts or welding.

[0008] A further technical solution is to connect the two ends of the telescopic brace to the outer tube of the upright and the telescopic support respectively through scaffolding couplers.

[0009] A further technical solution is as follows: three telescopic support legs are symmetrically connected at the bottom of the base with its center as the center. The top of the telescopic support legs is fixedly connected to the base, and a pad is fixedly installed at the bottom of the telescopic support legs. The bottom surface of the pad is provided with an anti-slip rubber pad.

[0010] A further technical solution is: a load-bearing rod is provided at the center of the bottom of the base, and hooks for connecting counterweights are provided on the load-bearing rod.

[0011] The beneficial effects of this utility model are:

[0012] In grouting projects, in addition to excavating the concrete capping foundation, excavation of the surrounding area is also required. This application addresses this by placing a monitoring device in stable rock outside the grouting area, using a tripod to form a stable support foundation. A telescopic crossbar is installed, its length precisely adjusted according to site conditions, extending one end above the concrete capping structure. A micrometer is installed at this end to measure the heave of the glass plate at the top of the concrete capping structure, monitoring the heave and deformation of the grouting area, thus facilitating control of the grouting pressure. Furthermore, an adjustable telescopic brace is installed between the other end of the crossbar and the upright. The brace's support enhances the stability of the crossbar, suppressing and balancing its instability, and preventing it from tipping over during construction.

[0013] This utility model's lifting monitoring device features convenient loading, unloading, and operation, as well as stability and reliability. It facilitates rapid switching of monitoring positions during grouting construction, reducing installation time and labor costs, effectively increasing monitoring frequency, and promptly capturing grout lifting events. Furthermore, the device has a simple structure, uses readily available materials, and is easy to manufacture, reducing production and maintenance costs and resulting in significant economic benefits. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention during grouting lifting monitoring.

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 3 This is a structural schematic diagram of the telescopic crossbar of this utility model.

[0017] Figure 4 This is a structural schematic diagram of the tripod support of this utility model.

[0018] In the picture:

[0019] 1. Telescopic crossbar, 2. Upright pole, 3. Mounting base, 4. Magnetic base, 5. Micrometer, 6. Glass plate, 7. Telescopic diagonal brace, 8. Tripod support, 9. Base, 10. Telescopic support leg, 11. Anti-slip rubber pad, 12. Outer tube, 13. Inner tube, 14. Adjustment hole, 15. Fastening bolt, 16. Mounting bolt, 17. Concrete cover weight, 18. Grouting hole, 19. Stabilized bedrock, 20. Scaffolding coupler, 21. Base plate, 22. Load-bearing column, 23. Hook. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] An easy-to-install grout lifting monitoring device, such as Figure 1-3As shown, the system includes a tripod 8, which includes a base 9 and multiple telescopic legs 10 symmetrically arranged at the bottom of the base 9. A vertical pole 2 is fixedly installed at the center of the top of the base 9. A horizontal telescopic crossbar 1 is connected to the pole 2 via a scaffolding fastener 20. The end of the telescopic crossbar 1 away from the base 9 extends above the concrete cover and is provided with a mounting base 3. A micrometer 5 is connected to the mounting base 3 via a magnetic base 4. A glass plate is provided at the bottom of the probe of the micrometer 5. The glass plate is located on the top of the concrete cover 17. A telescopic diagonal brace 7 is provided between the end of the telescopic support near the base 9 and the pole 2.

[0024] The magnetic base 4 is firmly fixed to the bracket by the attraction of magnets. While in the attracted state, the angle of the universal arm on the magnetic base 4 can be easily adjusted, allowing for fine-tuning of the height and angle of the micrometer 5 to adapt to the installation requirements of the desired detection area and providing a stable reference point for lifting monitoring. A glass plate is placed on the flat surface of the top of the concrete cover 17, providing a monitoring plane for the micrometer 5, which detects the lifting value of the concrete. Specifically, the magnetic base 4 is a mature product in existing technology, and its specific structure and usage will not be described in detail here.

[0025] The micrometer 5 can use a dial indicator or a displacement sensor, with the dial indicator, displacement sensor or measuring range not less than 10 mm. The displacement sensor can be connected to a grouting recorder or a dedicated lifting recorder.

[0026] The telescopic crossbar 1, telescopic support leg 10, and telescopic diagonal brace 7 all include an outer tube 12 and an inner tube 13 disposed inside the outer tube 12. The inner tube 13 can slide relative to the axis of the outer tube 12. Multiple adjustment holes 14 are provided on the outer tube 12 and the inner tube 13 along their axial direction. Adjustment bolts 15 and adjustment nuts are connected to the corresponding adjustment holes 14. The overall length of the telescopic crossbar 1, telescopic diagonal brace 7, and telescopic support leg 10 can be adjusted by adjusting the length of the inner tube 13 extending into the outer tube 12, and the length is locked by the adjustment bolts 15 passing through the adjustment holes 14.

[0027] Specifically, the scaffolding coupler 20 used to connect the telescopic crossbar 1 and the upright 2 is a right-angle coupler. The scaffolding coupler 20 used to connect the telescopic diagonal brace 7 to the telescopic crossbar 1 and the telescopic diagonal brace 7 to the upright 2 is a swivel coupler. The mounting base 3 is made of square-section steel, and the inner diameter of the steel is adapted to the outer diameter of the inner tube 13 of the telescopic upright 2. The mounting base 3 and the inner tube 13 of the telescopic upright 2 are fixed by mounting bolts 16 or welding. Specifically, the mounting base 3 and the inner tube 13 of the telescopic upright 2 are fixed by welding, so that at least three sides of the mounting base 3 can serve as the adsorption surface of the magnetic base 4, which facilitates the adjustment of the installation position of the micrometer 5 according to the needs of the construction site. In another embodiment, mounting holes corresponding to the adjustment holes 14 on the telescopic crossbar 1 are provided on the two side walls of the mounting base 3. The mounting holes and the adjustment holes 14 are fixedly connected by mounting bolts 16 and nuts, so that the position of the mounting base 3 can be adjusted as needed.

[0028] The two ends of the telescopic diagonal brace 7 are connected to the upright 2 and the outer tube 12 of the telescopic support respectively via scaffolding couplers 20. The scaffolding couplers on the telescopic diagonal brace are swivel couplers. During use, construction personnel adjust the length of the telescopic diagonal brace 7 and its position on the telescopic support according to the distance between the mounting seat 3 on the telescopic horizontal bar 1 and the upright 2, so that the telescopic upright 2 remains stable during use, preventing tipping and improving the overall stability of the device.

[0029] The base 9 has a circular cross-section. Three telescopic legs 10 are symmetrically connected to the bottom of the base 9 with its center as the center. The top of the telescopic legs 10 is fixedly connected to the base 9. A pad 21 is fixedly installed at the bottom of the telescopic legs 10. The bottom surface of the pad 21 is provided with an anti-slip rubber pad 11 to increase the friction between the telescopic support and the ground and improve the stability of the tripod 8.

[0030] A load-bearing rod 22 is installed at the center of the bottom of the base 9, and hooks 23 for connecting counterweights are installed on the load-bearing rod 22. The counterweights can be made from waste materials from the construction site, such as scrap channel steel, mineral water bottles filled with water or sand, nylon bags filled with stones, etc. By suspending the counterweights on the hooks, the weight of the tripod 8 is effectively increased, thereby significantly improving the stability of the overall structure, lowering the center of gravity of the device, and preventing tipping or swaying.

[0031] How to use the device of this utility model:

[0032] Clean the surface of the concrete cap 17 on top of the grouting hole 18 to be inspected and place a glass plate on it. Find a blank area near the stable bedrock 19 of the grouting hole 18 and level it. Place a tripod 8 on the stable bedrock 19 and adjust the length of each telescopic leg 10 according to the site conditions. (The stable bedrock 19 referred to in the instruction manual refers to the intact bedrock excavated outside the grouting concrete cap 17. This part of the bedrock has good geological conditions, sufficient strength, and loose covering or unstable parts have been removed during the excavation process.)

[0033] Based on the distance to the concrete cover weight 17 at the measured grouting hole 18, adjust the length of the telescopic crossbar 1, and install the telescopic crossbar 1 to a suitable height on the upright 2 using scaffolding fasteners 20. Place a magnetic gauge base 4 on the mounting seat 3 on the inner tube 13 of the telescopic crossbar 1, fix the micrometer 5 to the universal arm on the magnetic gauge base 4, and adjust the angle of the universal arm so that the probe of the micrometer 5 is placed on the top surface of the glass plate 6. Based on the distance between the mounting seat 3 on the telescopic crossbar 1 and the upright 2, adjust the length and installation position of the telescopic diagonal brace 7 to keep the telescopic crossbar 1 relatively stable.

[0034] During grouting, based on the uplift value T detected by micrometer 5, the relationship between the current uplift value T and the design allowable value T0 is compared, and the grouting pressure is adjusted accordingly: if T < 0.5T0, the current grouting pressure can be appropriately increased; if 0.5T0 ≤ T < 0.75T0, the current grouting pressure is maintained; if 0.75T0 ≤ T < T0, the current grouting pressure is reduced. During grouting, a situation where T > the design allowable value T0 is not allowed. The design allowable value T0 is set by construction personnel based on construction experience and specifications. Grouting can be stopped once the grouting section meets the corresponding conditions, and the monitoring device of this utility model can be removed and installed near the next monitoring hole. Specifically, this utility model device is applied to the grouting construction of a reservoir project in a certain province. Compared with traditional uplift monitoring devices, it can effectively improve monitoring efficiency, promptly capture grouting uplift, facilitate rapid switching of monitoring positions during grouting construction, reduce installation time and labor costs, and achieve good application results.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A grouting displacement monitoring device that is easy to install, characterized in that, The system includes a tripod, which consists of a base and multiple telescopic legs symmetrically arranged at the bottom of the base. A vertical pole is fixedly installed at the center of the top of the base. A horizontal telescopic crossbar is connected to the pole via scaffolding fasteners. A mounting base is installed at the end of the telescopic crossbar away from the base. A micrometer is connected to the mounting base via a magnetic base. A glass plate is installed at the bottom of the micrometer's probe. The glass plate is installed on the top of the concrete cover. A telescopic diagonal brace is installed between the end of the telescopic support near the base and the pole.

2. The grouting lifting monitoring device that is easy to install according to claim 1, characterized in that, The telescopic crossbar, telescopic outrigger, and telescopic diagonal brace all include an outer tube and an inner tube set inside the outer tube. The inner tube can slide relative to the axis of the outer tube. Multiple adjustment holes are opened on the outer tube and the inner tube along their axial direction, and adjustment bolts and adjustment nuts are connected to the corresponding adjustment holes.

3. The grouting lifting monitoring device that is easy to install according to claim 2, characterized in that, The mounting base is made of square-section steel, and the inner diameter of the steel is matched with the outer diameter of the inner tube of the telescopic pole. The mounting base and the inner tube of the telescopic pole are fixed by mounting bolts or welding.

4. The grouting lifting monitoring device that is easy to install according to claim 2, characterized in that, The two ends of the telescopic brace are connected to the outer tube of the upright and the telescopic support respectively through scaffolding couplers.

5. A grouting lifting monitoring device that is easy to install according to claim 2, characterized in that, The base has three telescopic support legs symmetrically connected to its center. The top of the telescopic support legs is fixedly connected to the base, and the bottom of the telescopic support legs is fixedly equipped with a pad. The bottom surface of the pad is equipped with an anti-slip rubber pad.

6. The grouting lifting monitoring device according to claim 5, characterized in that, A load-bearing rod is installed at the center of the bottom of the base, and hooks for connecting counterweights are installed on the load-bearing rod.

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