Road ballasting grouting device based on ballasting plate-elastic piece combined structure and construction technology of road ballasting grouting device

Abstract

The invention discloses a road ballasting grouting device based on a ballasting plate-elastic piece combined structure and a construction technology thereof, the road ballasting grouting device comprises a grouting vehicle, grouting equipment and a ballasting structure, the grouting equipment and the ballasting structure are respectively arranged in front of and behind the grouting vehicle, and the whole device can be conveniently moved to a construction site; the ballasting structure comprises a translation mechanism, a hydraulic mechanism, a ballasting plate and an elastic piece, one end of the translation mechanism horizontally extends outwards to be connected with the ballasting plate and drives the ballasting plate to horizontally move, the elastic piece is arranged below the ballasting plate and is in direct contact with the road surface, and the ballasting plate-elastic piece structure is hung behind the grouting vehicle.

Description

Technical Field

[0001] This invention relates to the field of road engineering grouting technology, specifically to a road counterweight grouting device and its construction process based on a counterweight plate-elastic element combination structure. Background Technology

[0002] Semi-rigid base asphalt pavements are prone to defects such as internal voids, loose and cracked base layers, and water accumulation due to long-term exposure to natural environment and vehicle loads. These defects seriously affect road performance and service life, and road cracks need to be maintained and repaired.

[0003] Grouting is a relatively effective treatment method for road maintenance. Road grouting technology involves injecting grouting material into the damaged area, utilizing the material's expansion to fill gaps and prevent seepage. However, the grouting process has the following problems: if the grouting pressure is too high, it may cause the pavement structural layer to be lifted, forming bulges and affecting the pavement smoothness; if the pressure is too low, insufficient grouting will affect the reinforcement effect. Therefore, a certain amount of pressure can be applied to the pavement during grouting to ensure sufficient grouting and prevent the structural layer from being lifted, thereby ensuring the reinforcement effect and pavement smoothness. For details, see patent CN118029249A, which discloses a road grouting device and grouting method based on a counterweight plate; however, in actual use, the following problems exist: First, traditional counterweight plates have high rigidity, making it difficult to achieve sufficient contact with uneven road surfaces, resulting in uneven weight distribution and affecting the grouting repair effect. Second, because the weight of traditional counterweight plates is fixed, the applied load cannot be adjusted according to the grouting pressure, making it difficult to achieve a stable weight distribution effect. Furthermore, existing loading devices generally suffer from problems such as inconvenience in movement. These factors limit the application of counterweight grouting technology, thus necessitating an improved pressure-stabilizing grouting device and construction method. Summary of the Invention

[0004] This invention aims to solve the problems of traditional counterweight plates being unable to adjust the counterweight load according to grouting pressure and having poor contact with uneven road surfaces. It provides a road pressure-stabilizing grouting device and method based on a counterweight plate-elastic component composite structure. Using a grouting truck as a carrier, it integrates grouting equipment and the counterweight plate-elastic component composite structure, adjusting the counterweight load according to the grouting depth to achieve stable road surface grouting and ensure the quality of road repair.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a road grouting device based on a combination structure of a ballast plate and an elastic element, comprising a ballast structure, wherein the ballast structure includes a translation mechanism, a hydraulic mechanism, and a ballast plate, wherein one end of the translation mechanism extends horizontally outward and is connected to the hydraulic mechanism, and the hydraulic mechanism is vertically arranged and connected to the ballast plate; and further comprising an elastic element, wherein the elastic element is installed at the bottom of the ballast plate and is used to contact the road surface, and grouting holes for grouting pipes to pass through are provided on the ballast plate and the elastic element.

[0006] As a further technical solution, the elastic element and the counterweight plate are detachably connected. The elastic element and the counterweight plate are connected via a detachable connection design, with fixing studs on the elastic element that are secured to nuts on the ribs of the counterweight plate, making the device more flexible in use. During use, the elastic element can be replaced according to different needs at the construction site. The detachable connection method also facilitates equipment maintenance and replacement of the elastic element, ensuring the long-term stable operation of the device.

[0007] As a further technical solution, the design of the elastic element takes into account various working environments, therefore two different types of elastic elements are available for application under different construction conditions: The liquid-filled bladder, designed as an elastic element, automatically changes shape under pressure due to its liquid-filled properties, adapting to variations in road surface unevenness. Once filled with liquid, the bladder provides flexible support and ensures even pressure distribution. This type of elastic element is particularly suitable for irregular road surfaces or situations with significant pressure variations. The liquid-filled bladder design greatly enhances the adaptability of the device, avoiding the uneven pressure problems of traditional rigid counterweights on uneven surfaces.

[0008] As an elastic component, rubber sheets possess high compressive strength and strong resilience. Rubber materials can withstand high pressure while maintaining a certain degree of elasticity, allowing them to adapt to deformation and return to their original shape when encountering uneven road surfaces. Rubber sheets are suitable for use in situations requiring high pressure resistance, and their durability effectively extends the service life of equipment. The design of rubber sheets ensures that they maintain their elastic properties even under long-term high-pressure environments, guaranteeing the stability and longevity of the device.

[0009] As a further technical solution, the contact area between the elastic element and the road surface is larger than the contact area between the counterweight plate and the elastic surface. The design of the contact area between the elastic element and the road surface requires that the contact area between the elastic element and the road surface be larger than the contact area between the counterweight plate and the elastic element. The purpose of this design is to ensure that when pressure is applied by the counterweight plate, the elastic element can provide a wider support area, thereby evenly distributing the pressure and avoiding damage caused by excessive local pressure. By increasing the contact area between the elastic element and the road surface, the contact quality between the road surface and the counterweight plate can be effectively improved, ensuring uniform grouting effect and avoiding pressure concentration due to insufficient contact area, which could lead to grouting failure or incomplete repair.

[0010] As a further technical solution, a sleeve valve tube is also included, which is installed inside the road surface borehole, and the space between the sleeve tube and the borehole wall is filled with sealing material.

[0011] As a further technical solution, a grouting pipe is also included. This grouting pipe passes through the counterweight plate and the elastic element and is connected to the sleeve valve pipe. Because an elastic element is added in this invention, if the grouting channel is directly provided on the elastic element, the grout can easily clog the grouting channel after grouting is completed. Therefore, to solve this problem, the grouting pipe of this invention passes through the counterweight plate and the elastic element and is connected to the sleeve valve pipe. [Jia Yang 1][mz2] Secondly, based on the aforementioned road grouting device with a combined structure of a counterweight plate and an elastic element, the present invention also provides a construction process, as follows: Step 1: Temporarily close the traffic. Based on the previous disease detection results, grouting holes are laid out in the form of plum blossom piles. Then, the holes are drilled to form grouting holes. The drilling depth is determined according to the actual situation. After the drilling is completed, sleeve valve pipes are buried in the holes. After the sleeve pipes are placed, the gap between the sleeve pipes and the hole walls is filled with early-strength polymer material. Step 2, Pulping: Step 3: Adjust the lateral position of the counterweight plate so that it is located in the construction area; Step 4: Fix the elastic element to the bottom of the counterweight plate; Step 5: Adjust the vertical position of the counterweight plate so that when the elastic element contacts the road surface, Step 6: Install the grouting pipe; Step 7: Stabilize the pressure to ensure effective pressure stabilization throughout the grouting process; Step 8: Start grouting. During the grouting process, observe whether there is grout overflow from adjacent holes around the grouting hole. If grout overflow is found, seal the hole with a wooden plug and clean up the overflowing grout. Step 9: Grouting complete. As a further technical solution For liquid-filled pouch-type elastic components, perform a liquid filling test to confirm that the pouch is filled with sufficient liquid, and a pressure test to ensure that the liquid does not leak; for rubber plate-type elastic components, check the sealing of the connection to ensure that there are no loose or uneven pressure points.

[0012] The beneficial effects of the present invention through the above technical solution are: This invention employs a combined structure of a counterweight plate and an elastic element to solve the problem of poor contact between traditional counterweight plates and uneven road surfaces. The elastic element can fully conform to the unevenness of the road surface under the pressure of the counterweight plate, resulting in more uniform weight distribution. The applied load ensures a stable pressure effect, effectively preventing the road surface from bulging due to the expansion of geopolymers and improving the grouting repair effect. During grouting, the combined structure of the counterweight plate and the elastic element fits tightly against the road surface, applying a stable external load. Combined with grouting equipment, grout is injected into underground grouting holes, filling voids and gaps, repairing road surface defects, and reducing traffic disruption. Simultaneously, the pressure of the stabilizing system is controlled according to the grouting pressure, aiming to maintain a smooth road surface, achieving efficient and high-quality grouting, improving the success rate of road engineering grouting repair, and demonstrating broad application prospects.

[0013] Because an elastic element is added in this invention, if the grouting hole is directly set on the elastic element, the grout can easily clog the grouting hole after grouting is completed. Therefore, in order to solve this problem, the grouting pipe of this invention passes through the weight plate, the elastic element and is connected to the sleeve valve pipe. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall equipment of the road pressure stabilizing grouting device based on the combination structure of the counterweight plate and the elastic element of the present invention.

[0015] Figure 2 This is a front view of the ballast plate-elastic element structure of the road pressure stabilizing grouting device based on the ballast plate-elastic element combination structure of the present invention.

[0016] Figure 3 This is a top view of the ballast plate-elastic element structure of the road pressure stabilizing grouting device based on the ballast plate-elastic element combination structure of the present invention.

[0017] Figure 4 This is a top view of the elastic element fixing device based on the combination structure of the counterweight plate and the elastic element of the present invention.

[0018] Figure 5 This is a side view of the upright frame of the road pressure stabilizing grouting device based on the combination structure of the counterweight plate and the elastic element of the present invention.

[0019] Figure 6 This is a schematic diagram of the grouting process of the road pressure stabilizing grouting device based on the combination structure of a counterweight plate and an elastic element according to the present invention.

[0020] The attached diagram, after being selected, shows the following components: 1. Grouting truck, 2. Grouting cylinder, 3. Agitator, 4. Agitator rod, 5. Conveying pump, 6. Movable crossbar, 7. Vertical frame, 8. Grout conduit, 9. Movable rack, 10. Worm gear, 11. Translation motor, 12. Valve, 13. Hydraulic cylinder, 14. Connecting rod, 15. Counterweight plate, 16. Elastic element, 17. Grouting cover, 18. Stand, 19. Sliding hole, 20. Rib plate, 21. Connecting support, 22. Grouting hole, 23. Grout hose, 24. Pressure gauge, 25. Grouting pipe, 26. Sealing material, 27. Sleeve valve pipe, 28. Piston, 29. Grout outlet hole, 30. Stud, 31. Rib plate nut. Detailed Implementation

[0021] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings: like Figure 1 — Figure 6 As shown, this embodiment discloses a road ballast grouting device based on a ballast plate, which mainly consists of a grouting truck 1, grouting equipment and ballast equipment; The grouting equipment is responsible for the preparation and transportation of grout, including a grouting cylinder 2, a mixer 3, a delivery pump 5, and a grout conduit 8 with a valve 12. The grouting cylinder 2 and the delivery pump 5 are located in front of the grouting vehicle 1. The grouting cylinder 2 is a hollow cylindrical body with a volume of 100L, used to store the geopolymer grout. A closable grouting cover 17 is provided on the top of the grouting cylinder 2. When opened, it facilitates the addition of geopolymer raw materials, and when closed, it effectively ensures the sealing of the grouting cylinder 2, preventing grout leakage and the mixing of external impurities.

[0022] A mixer 3 is installed above the grouting cylinder 2, with its lower end extending into the grouting cylinder 2. The mixer 3 consists of a mixing motor 3 and a mixing rod 4, which is coaxially positioned inside the grouting cylinder 2. The output shaft of the mixing motor 3 is connected to the mixing rod 4. When the mixing motor 3 is started, the mixing rod 4 rotates accordingly, thoroughly mixing the geopolymer grout in the grouting cylinder 2 to ensure uniform mixing and improve grout quality.

[0023] One side of the grouting cylinder 2 is connected to the inlet of the delivery pump 5, and the outlet of the delivery pump 5 is connected to the grout conduit 8. The delivery pump 5 delivers the geopolymer grout in the grouting cylinder 2 to the grout conduit 8, allowing it to flow out of the grouting cylinder 2 along the conduit. The grout conduit 8 is fixed on the grouting vehicle 1, with its front end connected to the delivery pump 5 and its rear end extending past the counterweight equipment to the rear of the grouting vehicle 1 and connected to valve 12. Valve 12 is used to connect the grouting hose for easy delivery and control of the grout.

[0024] The ballast device in this embodiment adopts a ballast plate-elastic element combination structure, including a translation mechanism, a hydraulic cylinder 13, a connecting rod 14, a ballast plate 15, and an elastic element 16. The translation mechanism is located at the rear of the grouting vehicle 1, with one end extending horizontally outward to connect to the hydraulic cylinder 13, driving the hydraulic cylinder 13 to move laterally horizontally along the length of the grouting vehicle 1.

[0025] The translation mechanism consists of a translation motor 11, a worm gear 10, and a movable crossbar 6 with a movable rack 9. The worm gear 10 is rotatably mounted between two spaced-apart supports 18 at the rear of the grouting vehicle 1 via bearings, with its axis aligned with the length direction of the grouting vehicle 1. The translation motor 11 is mounted on one side of the grouting vehicle 1 on one of the supports 18, and its output shaft is connected to the worm gear 10, driving the worm gear 10 to rotate.

[0026] The movable rack 9 is fixedly fitted onto the movable crossbar 6, the length of which is much greater than that of the movable rack 9. The movable rack 9 is a horizontally placed cylinder with a rack on its lower arc-shaped surface. The movable crossbar 6 passes through two U-shaped vertical frames 7 spaced apart behind the grouting vehicle 1 and can slide laterally along the vertical frames 7. The movable rack 9 is installed on the movable crossbar 6 between the two vertical frames 7. The sliding hole 19 opened on the vertical frame 7 has a cross-section composed of a circle and a rectangle, which matches the cross-section of the movable crossbar 6, restricting the movable crossbar 6 to move only laterally and preventing circumferential rotation.

[0027] The movable rack 9 meshes vertically with the worm gear 10. The rotation of the worm gear 10 causes the movable rack 9 to move laterally. Driven by the worm gear 10, the movable crossbar 6 slides laterally left and right on the grouting vehicle 1, causing the hydraulic cylinder 13 at the tail end to move. The hydraulic cylinder 13 can move away from or closer to the grouting vehicle 1. The hydraulic cylinder 13 is vertically positioned with a maximum stroke of 1m. It is connected below to the counterweight plate 15 and the elastic element 16, enabling the lifting and lowering control of the counterweight plate 15.

[0028] The counterweight plate 15 is a circular plate with a certain thickness, a diameter of 1.5m, and a weight of 500kg. It is connected to the connecting rod 14 via the connecting support 21. Driven by the hydraulic cylinder 13, the counterweight plate 15 can move up and down. When pressing down, it rests against the road surface, applying pressure to prevent the road surface from bulging during grouting. During the grouting process, the magnitude of the reaction force applied by the counterweight plate 15 to the road surface needs to be adjusted according to the road damage and the expansion stress of the polymer used.

[0029] like Figure 4As shown, in this embodiment, the counterweight plate 15 is provided with a slurry hole 22 that penetrates the counterweight plate 15 and the elastic element 16; multiple ribs 20 are provided on the periphery of the counterweight plate 15 to enhance the structural strength of the counterweight plate 15; nuts 31 are provided on the ribs to fix the elastic element.

[0030] The counterweight plate 15 and the elastic element 16 are arranged vertically. Multiple studs 30 are provided around the elastic element. The studs 30 fix the elastic element to the nut 31 of the rib plate 20 and can be freely disassembled to ensure that the counterweight plate 15 is in full contact with the ground and automatically balances the pressure.

[0031] As a further technical solution, the design of the elastic element 16 takes into account various working environments, therefore two different types of elastic elements are available for application under different construction conditions: The liquid-filled bladder, designed as an elastic element, automatically changes shape under pressure due to its liquid-filled properties, adapting to variations in road surface unevenness. Once filled with liquid, the bladder provides flexible support and ensures even pressure distribution. This type of elastic element is particularly suitable for irregular road surfaces or situations with significant pressure variations. The liquid-filled bladder design greatly enhances the adaptability of the device, avoiding the uneven pressure problems of traditional rigid counterweights on uneven surfaces.

[0032] As an elastic component, rubber sheets possess high compressive strength and strong resilience. Rubber materials can withstand high pressure while maintaining a certain degree of elasticity, allowing them to adapt to deformation and return to their original shape when encountering uneven road surfaces. Rubber sheets are suitable for use in situations requiring high pressure resistance, and their durability effectively extends the service life of equipment. The design of rubber sheets ensures that they maintain their elastic properties even under long-term high-pressure environments, guaranteeing the stability and longevity of the device.

[0033] As a further technical solution, the contact area between the elastic element and the road surface is larger than the contact area between the counterweight plate and the elastic surface. The design of the contact area between the elastic element and the road surface requires that the contact area between the elastic element and the road surface be larger than the contact area between the counterweight plate and the elastic element. The purpose of this design is to ensure that when pressure is applied by the counterweight plate, the elastic element can provide a wider support area, thereby evenly distributing the pressure and avoiding damage caused by excessive local pressure. By increasing the contact area between the elastic element and the road surface, the contact quality between the road surface and the counterweight plate can be effectively improved, ensuring uniform grouting effect and avoiding pressure concentration due to insufficient contact area, which could lead to grouting failure or incomplete repair.

[0034] As a further technical solution, the grouting device of the present invention also includes a grouting pipe 25, which passes through the grouting hole on the counterweight plate and the elastic element and is connected to the sleeve valve pipe 27. Since the present invention adds an elastic element, if the grouting hole is directly provided on the elastic element, the grout can easily clog the grouting hole after grouting is completed. Therefore, to solve this problem, the grouting pipe 25 of the present invention passes through the counterweight plate 15 and the elastic element 16 and is connected to the sleeve valve pipe 27. [Jia Yang 3] This invention utilizes a grouting truck 1 to transport grouting equipment and a ballast device to the road surface to be repaired. The grouting equipment prepares a geopolymer grout and injects it underground to repair road defects such as cavities and cracks. During the grout injection process, the ballast device adjusts the pressure on the road surface to prevent it from bulging due to the expansion force of the grout, thus ensuring the effectiveness of the grouting.

[0035] like Figure 6 As shown, the road pressure stabilization grouting method based on the counterweight plate-elastic element combination structure includes the following steps: Step 1: Preparation before road repair: Temporarily close traffic. Based on the preliminary damage detection results, lay out grouting holes in a staggered pattern. Then, manually drill the holes to form the grouting holes. The drilling depth is determined according to the actual situation. After drilling, install sleeve valve tubes 27 inside the holes. After placing the sleeve tubes, fill the upper 20cm gap between the sleeve tubes and the hole wall with early-strength polymer material 26. The early-strength material can quickly form sufficient strength, making the sleeve tubes and grouting holes a single unit, preventing the grout from being squeezed out during the grouting process.

[0036] Step 2, Pulping: Step 3: Lateral Position Adjustment of the Counterweight Plate 15: Drive the grouting truck 1 onto the road to be repaired, positioning the grouting hole area approximately 1 meter behind the truck 1. Activate the translation mechanism, controlling the translation motor 11 to rotate forward and backward, driving the worm gear 10 to rotate, which in turn moves the movable crossbar 6 laterally, causing the hydraulic cylinder 13 and the counterweight plate 15 to follow the movement until the grout hole 15 in the middle of the counterweight plate 15 is aligned with the grouting hole.

[0037] Step 4, Installation of Elastic Component 16: Before installing the elastic component, ensure all relevant equipment is correctly connected and check that the hydraulic system and connecting pipes are unobstructed. Confirm that the grouting truck and counterweight device are positioned in the construction area, ensuring the precise installation position of the counterweight plate and elastic component. Secure the studs on the periphery of the elastic component (liquid bag type or rubber plate type) to the nuts on the ribs of the counterweight plate using quick-release stud devices or locking rings, ensuring complete alignment between the elastic component and the counterweight plate. For liquid bag type elastic components, check that the bag opening is completely sealed to prevent leakage during subsequent operations.

[0038] After the elastic element is installed, check that the connection between the elastic element and the counterweight plate is secure and stable. Ensure that the elastic element can bear force evenly under load and can automatically adjust its shape according to pressure changes. For liquid-filled pouch-type elastic elements, perform a liquid filling test to confirm that the pouch is adequately filled, and a pressure test to ensure that there is no liquid leakage. For rubber plate-type elastic elements, check the sealing of the connections to ensure that there are no loose or uneven pressure points.

[0039] Step 5, Adjusting the vertical position of the counterweight plate 15: Extend the hydraulic cylinder 13 to move the counterweight plate 15 downward. When the elastic element 16 contacts the road surface, stop the operation of the hydraulic cylinder 13.

[0040] Step 6: Grouting pipe installation: Connect one end of the grouting pipe to valve 12 and insert the other end into the grouting hole to prepare for grouting.

[0041] Step 7, Pressure Stabilization: Calculate whether the pressure stabilization system needs to apply pressure to the road surface based on the grouting pressure, using Formula 1: F1 = 3.14Pr 2 Calculate the lifting force of the grout on the road surface at the maximum grouting pressure, where F1 is the maximum lifting force in N; P is the maximum outlet pressure of the grouting machine in MPa; and r is the radius of the grout outlet in mm. Calculate the stress exerted on the road surface by the pressure stabilization system using formula 2: F2 + F3 > F1, where F2 is the weight of the counterweight plate in N, and the counterweight plate has a radius of 1.5m, a thickness of 0.025m, and a steel plate density of 7850 kg / m³. 3 F2 is 555N; F3 is the external load applied to the ballast plate by the hydraulic cylinder, in N. When F2 > F1, that is, the weight of the ballast plate itself is greater than the lifting force, no additional load needs to be applied to the ballast plate; when F3 < F1, that is, the weight of the ballast plate itself is less than the lifting force, additional pressure needs to be applied to the ballast plate, and the applied pressure is F3 = F1 - F2. After determining the applied load, the pressure of the pressure stabilizing system is adjusted by the hydraulic cylinder 13 to ensure the pressure stabilizing effect throughout the grouting process. Step 8: Start grouting: Open valve 12 on grout conduit 8 and start delivery pump 5 to allow grout to flow through grout conduit 8, grout hose 23, and grouting pipe 25 into grouting hole 22. During grouting, a layered grouting method is adopted. Specifically, insert grouting pipe 25 into sleeve 27 and grout from bottom to top into grout outlet holes 29 at different depths of sleeve 27. Piston 28 can block the grout during grouting. During grouting, observe whether there is grout overflow from adjacent holes around the grouting hole. If grout overflow is found, seal the hole with a wooden plug and clean up the overflowing grout. Observe pressure gauge 24; when the grouting pressure suddenly increases, immediately close the grouting valve, stop grouting, and pull out the grouting head.

[0042] Step 9: Grouting completed. The embodiments described above are merely preferred embodiments of the present invention and do not constitute a limitation on the scope of the present invention. Equivalent changes or modifications made to the structures, features, and principles described in the claims of this invention should be included within the scope of the patent application of this invention.

Claims

1. A road grouting device based on a ballast plate-elastic element combination structure, comprising a ballast structure, wherein the ballast structure includes a translation mechanism, a hydraulic mechanism, and a ballast plate, wherein one end of the translation mechanism extends horizontally outward and connects to the hydraulic mechanism, and the hydraulic mechanism is vertically arranged and connected to the ballast plate, characterized in that... It also includes an elastic element, which is installed at the bottom of the counterweight plate. The elastic element is used to contact the road surface, and grouting holes for grouting pipes to pass through are provided on the counterweight plate and the elastic element.

2. The road grouting device based on the combination structure of ballast plate and elastic element as described in claim 1, characterized in that, The elastic element is detachably connected to the counterweight plate.

3. The road grouting device based on the combination structure of ballast plate and elastic element as described in claim 2, characterized in that, The counterweight plate is provided with ribs, and a first connector is provided on the ribs. A second connector is fixed on the elastic member, and the second connector is detachably connected to the first connector.

4. The road grouting device based on the combination structure of ballast plate and elastic element as described in claim 1, characterized in that, The elastic element is a bladder filled with liquid.

5. The road grouting device based on the combination structure of ballast plate and elastic element as described in claim 1, characterized in that, The elastic element is a rubber sheet.

6. The road grouting device based on the combination structure of ballast plate and elastic element as described in claim 1, characterized in that, The contact area between the elastic element and the road surface is greater than the contact area between the counterweight plate and the elastic surface.

7. The road grouting device based on the combination structure of ballast plate and elastic element as described in claim 1, characterized in that, It also includes a sleeve valve tube, which is installed inside the road borehole and the space between the sleeve tube and the borehole wall is filled with a sealing material.

8. The road grouting device based on the combination structure of ballast plate and elastic element as described in claim 7, characterized in that, It also includes a grouting pipe, which passes through the counterweight plate and the elastic element and is connected to the sleeve valve pipe.

9. The construction process of the road counterweight grouting device based on the counterweight plate-elastic element combination structure as described in any one of claims 1-8, characterized in that, Step 1: Temporarily close the traffic. Based on the previous disease detection results, grouting holes are laid out in the form of plum blossom piles. Then, the holes are drilled to form grouting holes. The drilling depth is determined according to the actual situation. After the drilling is completed, sleeve valve pipes are buried in the holes. After the sleeve pipes are placed, the gap between the sleeve pipes and the hole walls is filled with early-strength polymer material. Step 2, Pulping: Step 3: Adjust the lateral position of the counterweight plate so that it is located in the construction area; Step 4: Fix the elastic element to the bottom of the counterweight plate; Step 5: Adjust the vertical position of the counterweight plate so that when the elastic element contacts the road surface, Step 6: Install the grouting pipe; Step 7: Stabilize the pressure to ensure effective pressure stabilization throughout the grouting process; Step 8: Start grouting. During the grouting process, observe whether there is grout overflow from adjacent holes around the grouting hole. If grout overflow is found, seal the hole with a wooden plug and clean up the overflowing grout. Step 9: Grouting complete.

10. The construction process of the road counterweight grouting device based on the counterweight plate-elastic element combination structure as described in claim 9, characterized in that, For liquid-filled pouch-type elastic components, perform a liquid filling test to confirm that the pouch is filled with sufficient liquid, and a pressure test to ensure that the liquid does not leak; for rubber plate-type elastic components, check the sealing of the connection to ensure that there are no loose or uneven pressure points.

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