Self-adapting crack positioning grouting device

Abstract

The utility model relates to soft soil grouting technical field especially, it relates to self -adaptation crack positioning grouting device, including installation frame, grouting frame, sounding tube, elastic plate, telescopic link, hinge, self -adaptation pressure valve and sliding block, the grouting frame is installed in installation frame center cavity department, the elastic plate is slidably connected in the grouting frame lower extreme for sticking to the ground, the telescopic link is installed between the elastic plate and grouting frame, the telescopic link outside vertical encircles and is installed with multiple groups of the sounding tube for in when pressing the soft soil surface, meet the crack and lose the support and deflect inwards, the hinge that grouting frame fixed connection is installed on the sounding tube upper end for driving the sounding tube deflection, the sliding block is buckled connection in the sounding tube upper end, the utility model realizes through the design of sounding tube, when pressing the soft soil surface, if meet the crack, the sounding tube will lose the support and deflect inwards to the realization crack detection.

Description

Technical Field

[0001] This utility model relates to the field of soft soil grouting technology, and in particular to an adaptive crack positioning grouting device. Background Technology

[0002] Soft soil refers to fine-grained soils deposited in coastal areas, lakes, valleys, and riverbanks, characterized by high water content, large void ratio, high compressibility, and low shear strength. The main components of soft soil include silt, silty soil, peat, peaty soil, fill, miscellaneous fill, and saturated water-bearing clay. These soils exhibit high water content, high void ratio, and low shear strength, resulting in poor bearing capacity and stability. Grouting reinforcement technology involves injecting specific grout materials into the soft soil foundation to fill the voids and solidify them, thereby improving the foundation's bearing capacity and stability. Grouting materials typically include cement grout and chemical grouts, which can rapidly diffuse and fill voids while possessing good solidification properties. Grouting reinforcement technology is applicable not only to soft soil foundations but also to rock formations, enhancing the soil's bearing capacity by increasing pore water pressure and filling pore spaces.

[0003] Meanwhile, traditional grouting methods often face significant challenges in identifying and locating underground cracks. These problems often lead to waste of grouting materials and unsatisfactory grouting results. Specifically, traditional grouting technology relies on drilling holes in the ground and injecting grout for foundation reinforcement or water-stopping treatment. However, this method lacks the ability to accurately locate underground cracks and usually can only determine the grouting location based on experience and limited geological exploration information. This approach is not only inefficient, but also results in a large amount of grouting material being used ineffectively due to the inability to accurately determine the specific location and direction of the cracks, and may even fail to achieve the expected reinforcement effect at all. Utility Model Content

[0004] To overcome the problems that traditional grouting methods often fail to accurately identify and locate underground cracks, leading to wasted grouting materials or poor grouting results, and that traditional grouting equipment lacks the ability to precisely grout specific cracks, this utility model provides an adaptive crack positioning grouting device.

[0005] The technical solution is as follows: An adaptive crack positioning grouting device includes an installation frame, a grouting frame, a probe cylinder, an elastic plate, a telescopic rod, a hinge, an adaptive pressure valve, and a slider. The grouting frame is installed in the central cavity of the installation frame. An elastic plate for contacting the ground is slidably connected to the lower end of the grouting frame. A telescopic rod is installed between the elastic plate and the grouting frame. Multiple sets of probe cylinders are vertically mounted around the outside of the telescopic rod, penetrating the grouting frame. When pressing the soft soil surface, the probe cylinders will deflect inwards upon encountering cracks due to loss of support. A hinge is fixedly connected to the grouting frame at the upper end of the probe cylinder to drive its deflection. A slider is fastened to the upper end of the probe cylinder. A connecting rod inside the probe cylinder pushes the slider to open the corresponding grouting hole, achieving precise grouting. An adaptive pressure valve is installed in the center of the grouting frame to automatically adjust the valve opening based on fluid reaction force during grouting.

[0006] Furthermore, a grouting pump is installed on the outside of the grouting frame, and a feed rack is fixedly connected to the upper surface of the grouting frame.

[0007] Furthermore, an adjusting ring is installed around the outer side of the feed rack and the grouting frame, and a blocking ring is installed around the outer side of the lower surface of the grouting frame.

[0008] Furthermore, a sealing ring is installed at the center of the inner part of the blocking ring on the outside of the telescopic rod, and multiple sets of grouting ports corresponding to the probe tube are opened around the lower surface of the elastic plate near the edge.

[0009] Furthermore, a push-pull plate is obliquely installed at the center of the rear end of the mounting frame, and two sets of fixing brackets are symmetrically installed on both sides of the upper surface of the mounting frame.

[0010] Furthermore, clamps are installed on the lower surface of the mounting frame near the corners, and the center of each clamp is connected to a movable wheel.

[0011] Furthermore, a baffle is installed laterally on the lower surface of the mounting frame, inside the moving wheel, and a rubber pad is installed on the surface of the baffle.

[0012] Furthermore, the rear end of the baffle is provided with a smoothing frame that is fixedly connected to the mounting frame.

[0013] The beneficial effects are as follows: This utility model achieves the following through the design of the probe tube: When pressing the soft soil surface, the device can automatically adjust according to the crack encountered. When the probe tube loses support and deflects inward, it can accurately identify the crack location and open the corresponding grouting hole through a linkage mechanism for precise grouting, thereby greatly improving the accuracy of grouting. Because it achieves precise positioning and targeted grouting of cracks, it avoids the material waste caused by blind injection in traditional grouting methods. This not only saves costs but also reduces the uneven expansion of the foundation or other negative effects that may be caused by excessive grouting. The device uses an adaptive pressure valve to automatically adjust the valve opening according to the fluid reaction force during the grouting process, ensuring that the optimal grouting pressure can be maintained under different geological conditions, thereby ensuring the quality and effect of crack filling. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the adaptive crack positioning grouting device of this utility model.

[0015] Figure 2 This is a three-dimensional structural diagram of the blocking ring of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the baffle of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the grouting frame of this utility model;

[0018] Figure 5 This is a schematic diagram of the hinge structure of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Mounting frame; 2. Fixing frame; 3. Push-pull plate; 4. Clamping plate; 5. Moving wheel; 6. Blocking ring; 7. Baffle; 8. Smoothing frame; 9. Rubber pad; 10. Grouting frame; 11. Grouting pump; 12. Adjusting ring; 13. Feed rack; 14. Penetrating tube; 15. Elastic plate; 16. Grouting port; 17. Telescopic rod; 18. Hinge; 19. Adaptive pressure valve; 20. Slider; 21. Sealing ring. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Among the currently discovered feasible technologies, the following are described:

[0022] Soft soil refers to naturally deposited fine-grained soils widely distributed in coastal areas, lacustrine basins, valleys, and riverbanks. Its main characteristics are high natural water content, large void ratio, high compressibility, and low shear strength, making it a type of soil with poor engineering properties. These soils are formed through long-term deposition in still or slowly flowing water environments. Their fine particles and loose structure result in high water content, often exceeding the liquid limit; a large void ratio, generally greater than 1.0; and low shear strength and bearing capacity. This unique physical state makes soft soil highly susceptible to deformation under its own weight or external forces, exhibiting significant rheological properties and instability. In practical engineering, the presence of soft soil foundations often leads to a series of serious engineering problems. For example, during building foundation construction, soft soil foundations are prone to excessive settlement, even uneven settlement, causing cracking and tilting of the superstructure, affecting the overall structural safety and functionality. Furthermore, due to its low shear strength, it is prone to sliding failure in slope engineering, leading to construction interruptions, economic losses, and even endangering personnel safety. Therefore, when constructing projects on soft soil foundations, effective reinforcement measures must be taken to improve their engineering performance, enhance the bearing capacity and stability of the foundation, and ensure the safety and reliability of the project. Grouting reinforcement technology, as a widely used foundation treatment method, is one of the effective means developed specifically for the above-mentioned characteristics of soft soil foundations. The basic principle of this technology is to inject a grout with a specific ratio into the soft soil under pressure, allowing it to penetrate, diffuse, and fill the voids and cracks in the soil. Subsequently, the grout solidifies and bonds, thereby improving the overall strength and stability of the soil. This process not only effectively improves the physical and mechanical properties of soft soil but also enhances its impermeability, prevents groundwater erosion and damage to the foundation, and improves the durability of the foundation. Commonly used grouting materials mainly include two categories: cement-based grouts and chemical grouts. Among them, cement-based grouts are mainly based on ordinary Portland cement, and sometimes admixtures such as early-strength agents, retarders, and water-reducing agents are added according to project needs to adjust their fluidity, setting time, and early strength. It is suitable for most conventional foundation reinforcement projects. Chemical grouts, including polyurethane, acrylates, and epoxy resins, offer higher permeability and reaction speed, making them suitable for special applications requiring high permeability or rapid curing, such as underground seepage prevention, crack repair, and tunnel rock reinforcement. These grouts exhibit excellent fluidity and diffusion, rapidly penetrating into the tiny pores and cracks in soft soil. After a certain period, they undergo chemical reactions or harden, transforming the originally loose and weak soil into a composite with a certain strength and stability. This composite structure not only improves the bearing capacity of the foundation but also significantly reduces its compressive deformation, enhances the soil's shear resistance, and forms an effective waterproof barrier to prevent further groundwater intrusion and damage. Furthermore, grouting reinforcement technology is not only suitable for the reinforcement of soft soil foundations but can also be widely applied in rock formations, fractured zones, tunnel rock, and underground engineering seepage prevention and plugging.In rock strata, grouting can increase pore water pressure and fill rock fissures, thereby improving rock mass integrity, enhancing support capacity, and preventing seepage damage. For rock masses with joints, fissures, or weathering fractures, grouting not only improves their integrity and stability but also effectively controls groundwater seepage paths, reduces the destructive effects of water pressure on the rock mass, and ensures the long-term safe operation of engineering structures.

[0023] Meanwhile, traditional grouting methods often face significant challenges in identifying and locating underground fissures, leading to wasted grouting materials and unsatisfactory grouting results. Specifically, traditional grouting technology relies primarily on drilling holes in the ground and injecting grout for foundation reinforcement or waterproofing. Its core operation involves injecting grout into the soil or rock strata at pre-defined drilling locations, relying on the grout's penetration to fill voids and improve overall strength. However, this method has significant limitations in practical applications, especially when targeting underground fissures. Due to a lack of effective fissure detection methods, traditional grouting operations typically rely on limited geological exploration data, engineering experience, or historical data to estimate the location and distribution of fissures, thus determining the grouting points. This approach is highly unpredictable and prone to errors in judgment under complex geological conditions, causing the grouting area to deviate from the actual fissure location, failing to achieve effective filling and reinforcement. Even if the grout is successfully injected, it may fail to accurately reach the core area of ​​the crack, resulting in an unreasonable diffusion path. Excessive grout accumulation in some areas while other critical areas remain untreated can ultimately affect the overall reinforcement effect. Furthermore, because it's difficult to monitor the filling status inside the crack in real time during the grouting process, and grouting parameters cannot be dynamically adjusted based on on-site feedback, traditional grouting techniques are poorly adaptable to irregularly distributed, complex, or variable cracks, easily leading to problems such as missed or over-grouting. This not only wastes a large amount of grouting material and increases construction costs, but may also cause new cracks or damage the stability of the original structure due to excessive local pressure, thus creating potential safety hazards.

[0024] like Figures 1-5As shown, the adaptive crack positioning grouting device includes an installation frame 1, a grouting frame 10, a probe cylinder 14, an elastic plate 15, a telescopic rod 17, a hinge 18, an adaptive pressure valve 19, and a slider 20. The grouting frame 10 is installed in the central cavity of the installation frame 1. An elastic plate 15 for contacting the ground is slidably connected to the lower end of the grouting frame 10. A telescopic rod 17 is installed between the elastic plate 15 and the grouting frame 10. Multiple sets of through-grouting frames 10 are vertically mounted around the outside of the telescopic rod 17 for contacting the ground. When pressing soft soil surfaces, the probe tube 14 will deflect inward due to loss of support when encountering cracks. The upper end of the probe tube 14 is equipped with a hinge 18 that is fixedly connected to the grouting frame 10 to drive the probe tube 14 to deflect. The upper end of the probe tube 14 is fastened with a slider 20. The slider 20 is pushed by the internal connecting rod of the probe tube 14 to open the grouting hole at the corresponding position to achieve precise grouting. The center of the grouting frame 10 is equipped with an adaptive pressure valve 19 that automatically adjusts the valve opening through the fluid reaction force during grouting.

[0025] A grouting pump 11 is installed on the outside of the grouting frame 10. A feed rack 13 is fixedly connected to the upper surface of the grouting frame 10 to facilitate efficient delivery of grout and material addition, thereby improving the continuity and efficiency of the overall grouting operation. An adjusting ring 12 is installed around the outside of the feed rack 13 and the grouting frame 10. A blocking ring 6 is installed around the outside of the lower surface of the grouting frame 10. The adjusting ring 12 can adjust the size of the feed channel according to actual needs, thereby achieving flexible control of the grout flow rate and injection speed. The blocking ring 6 can prevent the grout from leaking from non-target areas when not triggered, thereby enhancing the directionality and controllability of the grouting process.

[0026] First, the grouting frame 10 is responsible for fixing other key components. An elastic plate 15 is slidably connected to the lower end of the grouting frame 10, allowing it to conform to the ground. The elastic plate 15 is connected to the grouting frame 10 via a telescopic rod 17, which allows the elastic plate 15 to move up and down appropriately according to the ground shape, ensuring the equipment fits tightly to the ground. When the equipment presses against the soft soil surface, if it encounters a crack, the probe tube 14 will deflect inward due to loss of support. Each probe tube 14 is equipped with a hinge 18 at its upper end, allowing it to deflect flexibly according to terrain changes. A slider 20 is fastened to the upper end of the probe tube 14. An internal connecting rod within the probe tube 14 can push the slider 20 to open the corresponding position when the probe tube 14 deflects. The grouting holes are designed to ensure that grouting is only performed when cracks are detected, achieving precise grouting. An adaptive pressure valve 19 is installed at the center of the grouting frame 10, which automatically adjusts the valve opening according to the fluid reaction force during grouting. A grouting pump 11 is installed on the outside of the grouting frame 10 to provide stable grouting power. A feed rack 13 is fixedly connected to the upper surface of the grouting frame 10 to facilitate efficient grout delivery and material addition, improving the continuity and efficiency of the overall grouting operation. An adjusting ring 12 is installed around the outside of the feed rack 13 and the grouting frame 10, which can adjust the size of the feed channel according to actual needs, achieving flexible control of grout flow rate and injection speed.

[0027] Please see Figures 3-4 A sealing ring 21 is installed at the center of the inner part of the blocking ring 6 on the outside of the telescopic rod 17. Multiple sets of grouting ports 16, corresponding to the probe cylinder 14, are arranged around the lower surface of the elastic plate 15 near the edge. The sealing ring 21 effectively prevents grout leakage and ensures stable pressure in the grouting system. The grouting ports 16 are linked to the probe cylinder 14 to ensure that grout is precisely injected only when a crack is detected, achieving on-demand grouting. A push-pull plate 3 is obliquely installed at the center of the rear end of the mounting frame 1. Two sets of fixing frames 2 are symmetrically installed on both sides of the upper surface of the mounting frame 1. The push-pull plate 3 facilitates the operator to push or pull the entire device, improving the ease of movement of the equipment on site. The fixing frames 2 can be used to fix auxiliary equipment or for lifting and moving. To ensure stability, clamping plates 4 are installed on the lower surface of the mounting frame 1 near the corners. The center of the clamping plate 4 is rotatably connected to a moving wheel 5, which makes the device move more flexibly and effortlessly, adapting to complex construction site environments and improving work efficiency. A baffle 7 is installed laterally on the lower surface of the mounting frame 1 inside the moving wheel 5. The surface of the baffle 7 is covered with a rubber pad 9. The baffle 7 and its rubber pad 9 play a role in protecting the device, buffering and shock absorption, and preventing ground scratches, thus extending the service life of the equipment. A smoothing frame 8 is provided at the rear end of the baffle 7 and is fixedly connected to the mounting frame 1. The smoothing frame 8 can perform preliminary leveling of the ground surface after grouting, improving the overall quality and aesthetics of the construction.

[0028] The sealing ring 21, located outside the central telescopic rod 17 inside the blocking ring 6, primarily functions to prevent grout leakage from non-target areas during grouting, thereby ensuring stable pressure within the grouting system. This helps maintain the continuity and efficiency of the grouting process, ensuring that the grout is accurately injected into the predetermined position. Multiple sets of grouting ports 16, corresponding to the probe cylinder 14, are arranged around the lower surface of the elastic plate 15 near the edge. When the probe cylinder 14 detects a crack and deflects, it pushes the slider 20 via an internal connecting rod to open the corresponding grouting hole, allowing the grout to be precisely injected only when a crack is detected. (The last sentence appears to be incomplete and possibly refers to the rear end of the mounting frame 1.) A push-pull plate 3 is installed diagonally in the center, which allows the operator to easily move the entire device as needed. Clamping plates 4 are installed on the lower surface of the mounting frame 1 near the corners. The center of the clamping plate 4 is rotatably connected to a moving wheel 5. The design of the moving wheel 5 makes the entire device more flexible and labor-saving to move on the construction site, adapt to complex terrain conditions, and improve construction efficiency. A baffle 7 is installed horizontally on the lower surface of the mounting frame 1 inside the moving wheel 5. The surface of the baffle 7 is covered with a rubber pad 9. The rear end of the baffle 7 is provided with a smoothing frame 8 that is fixedly connected to the mounting frame 1. After grouting is completed, it can be used to perform preliminary leveling of the ground surface.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adaptive crack positioning grouting device, characterized in that, The system includes an installation frame (1); it also includes a grouting frame (10), a probe cylinder (14), an elastic plate (15), a telescopic rod (17), a hinge (18), an adaptive pressure valve (19), and a slider (20); the installation frame (10) is installed in the central cavity of the installation frame (1), the lower end of the grouting frame (10) is slidably connected to an elastic plate (15) for conforming to the ground, a telescopic rod (17) is installed between the elastic plate (15) and the grouting frame (10), and multiple sets of through-grouting frames (10) are vertically installed around the outside of the telescopic rod (17) for... When pressing the soft soil surface, the probe tube (14) will deflect inward due to loss of support when encountering cracks. The upper end of the probe tube (14) is equipped with a hinge (18) that is fixedly connected to the grouting frame (10) to drive the probe tube (14) to deflect. The upper end of the probe tube (14) is fastened with a slider (20). The slider (20) is pushed by the internal connecting rod of the probe tube (14) to open the grouting hole at the corresponding position to achieve precise grouting. The center of the grouting frame (10) is equipped with an adaptive pressure valve (19) that automatically adjusts the valve opening through the fluid reaction force during grouting.

2. The adaptive crack positioning grouting device according to claim 1, characterized in that, A grouting pump (11) is installed on the outside of the grouting frame (10), and a feed rack (13) is fixedly connected to the upper surface of the grouting frame (10).

3. The adaptive crack positioning grouting device according to claim 2, characterized in that, An adjusting ring (12) is installed around the outside of the feed rack (13) and the grouting frame (10), and a blocking ring (6) is installed around the outside of the lower surface of the grouting frame (10).

4. The adaptive crack positioning grouting device according to claim 3, characterized in that, The center of the blocking ring (6) is located on the outside of the telescopic rod (17) and a sealing ring (21) is installed. Multiple sets of grouting ports (16) corresponding to the probe tube (14) are opened around the lower surface of the elastic plate (15) near the edge.

5. The adaptive crack positioning grouting device according to claim 1, characterized in that, The rear center of the mounting frame (1) is obliquely fitted with a push-pull plate (3), and two sets of fixing brackets (2) are symmetrically installed on both sides of the upper surface of the mounting frame (1).

6. The adaptive crack positioning grouting device according to claim 1, characterized in that, The mounting frame (1) has a clamp plate (4) installed on the lower surface near the corner. The clamp plate (4) has a rotating wheel (5) connected to its center.

7. The adaptive crack positioning grouting device according to claim 1, characterized in that, A baffle (7) is installed laterally on the lower surface of the mounting frame (1) inside the moving wheel (5), and a rubber pad (9) is installed on the surface of the baffle (7).

8. The adaptive crack positioning grouting device according to claim 7, characterized in that, The rear end of the baffle (7) is provided with a smoothing frame (8) that is fixedly connected to the mounting frame (1).

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