High-pressure grouting device special for old road crack repairing

Abstract

The utility model relates to crack repair technical field discloses the high pressure grouting device special use in old road crack repair, including grouting car, the grouting car top fixedly connected with the storage container, the storage container outer wall fixedly connected with the discharge pipe, one side of storage container is provided with the connecting pipe, is provided with the conveying assembly between discharge pipe and connecting pipe, the connecting pipe one end is provided with the grouting pipe, the grouting pipe bottom is provided with the limiting component, the limiting component includes the limiting plate, limiting plate inside fixedly connected in the grouting pipe outer wall. In the utility model, press down pressure ring one through connecting rod one drive connecting rod two to unfold and stretch out the limiting shell, make connecting rod two outer wall through the limit and stab into the soil, carry out the fixed limit to the grouting pipe, reached when inserting the effect of its limit in the ground, solved the repair device insertion pavement to need operating personnel to exert pressure to prevent when high pressure grouting, the problem of repair device ejection, improved the practicality of repair device.

Description

Technical Field

[0001] This utility model relates to the field of crack repair technology, and in particular to a high-pressure grouting device for repairing cracks in old roads. Background Technology

[0002] With the development of urban infrastructure, old road surfaces often develop cracks due to long-term use and environmental factors. To extend the service life of the road surface and restore its function, crack repair has become an important maintenance task. High-pressure grouting technology is widely used in such repair work. It repairs the road surface by injecting grout to fill the cracks and then curing it under high pressure. Therefore, developing a dedicated high-pressure grouting device to improve the accuracy and efficiency of grouting is of great significance for improving urban transportation infrastructure.

[0003] Existing crack repair devices typically utilize mechanical force or pneumatic pressure to inject grout into road surface cracks. These devices mostly consist of grouting pipes, pressure regulating devices, and sealing devices. During grouting, operators need to manually apply a certain pressure to ensure the stability of the equipment. Simultaneously, attention must be paid to the flow and sealing of the grout to prevent overflow and loss. While this structure can achieve the basic function of crack repair, insufficient stability during operation often leads to reduced grouting accuracy, thus affecting the repair effect.

[0004] However, existing repair devices often require operators to apply additional pressure during high-pressure grouting to prevent the device from popping out, leading to unstable grouting and affecting the safety and effectiveness of the repair process. Furthermore, when disassembling existing equipment, residual grout easily spills out, causing chaos and waste on site. Therefore, there is an urgent need for a new type of high-pressure grouting device that can automatically limit its insertion into the ground and has a self-sealing function to avoid excessive pressure and residual grout during operation, thereby significantly improving the device's practicality and convenience. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a special high-pressure grouting device for repairing cracks in old roads, which aims to improve the problem that the repair device needs to be inserted into the road surface and pressure needs to be applied by the operator to prevent the repair device from popping out during high-pressure grouting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure grouting device for repairing cracks in old roads, comprising a grouting vehicle, a storage cylinder fixedly connected to the top of the grouting vehicle, a discharge pipe fixedly connected to the outer wall of the storage cylinder, a connecting pipe provided on one side of the storage cylinder, a conveying assembly provided between the discharge pipe and the connecting pipe, a grouting pipe provided at one end of the connecting pipe, and a limit assembly provided at the bottom of the grouting pipe; The limiting component includes a limiting plate, which is fixedly connected to the outer wall of the grouting pipe. A limiting shell is fixedly connected to the bottom outer wall of the grouting pipe. A sealing component is provided at the bottom of the limiting plate. A connecting rod two is rotatably connected to the outer wall of the grouting pipe. A connecting rod one is rotatably connected to one end of the connecting rod two. A pressure ring two is rotatably connected to one end of the connecting rod one. The pressure ring two is sleeved on the outer wall of the grouting pipe. A connecting column is fixedly connected to the top of the pressure ring two. A pressure ring one is fixedly connected to the top of the connecting column. A limiting spike is fixedly connected to one side of the connecting rod two. A fastening bolt is threaded inside the pressure ring one.

[0007] The above technical solution achieves the effect of limiting its position when inserted into the ground.

[0008] Preferably, the conveying assembly includes a pump body, the bottom of which is fixedly connected to the top of the grouting vehicle, the input end of the pump body is connected to one end of the discharge pipe, and the output end of the pump body is connected to the other end of the connecting pipe.

[0009] The above technical solution achieves the effect of extracting the slurry.

[0010] Preferably, the sealing assembly includes a second sealing ring, the top of which is fixedly connected to the bottom of the limiting plate.

[0011] The above technical solution effectively prevents slurry from leaking from the ground.

[0012] Preferably, a connector is fixedly connected to the top of the grouting pipe, a connecting groove is provided inside the connector, and steel balls arranged in a ring array are provided inside one end of the connector. The steel balls are fitted into the connecting groove, and a pressure block is fixedly connected inside the connector.

[0013] The above technical solution achieves the effect of easy connection.

[0014] Preferably, a connecting sleeve is slidably connected to the outer wall of the connecting tube, the inner wall of the connecting sleeve is in contact with the outer wall of the steel ball, and a first spring is sleeved on the outer wall of the connecting tube. One end of the first spring is fixedly connected to the inside of the connecting tube, and the other end of the first spring is fixedly connected to the inside of the connecting sleeve.

[0015] The above technical solution achieves the effect of resetting the connecting sleeve.

[0016] Preferably, a sealing cylinder is fixedly connected to one end of the connecting pipe, and a connecting groove is provided inside the sealing cylinder.

[0017] The above technical solution achieves the effect of slurry flow.

[0018] Preferably, a pressure rod is slidably connected inside the sealing cylinder, and a sealing ring is fixedly connected to the outer wall of the pressure rod, with the outer wall of the sealing ring fitting against the inner wall of the sealing cylinder.

[0019] The above technical solution achieves the sealing effect of the sealing cylinder.

[0020] Preferably, a second spring is fitted on the outer wall of the sealing ring, one end of the second spring is fixedly connected to the inside of the sealing cylinder, and the other end of the second spring is fixedly connected to the outer wall of the pressure rod.

[0021] The above technical solution achieves a self-sealing effect.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. In this utility model, firstly, pressing down on the first pressure ring drives the second pressure ring to press down through the connecting column, and then the first connecting rod drives the second connecting rod to unfold and extend the limiting shell, so that the outer wall of the second connecting rod pierces into the soil through the limiting spike, thereby fixing and limiting the grouting pipe. This achieves the effect of limiting the pipe when it is inserted into the ground, solving the problem that the repair device needs to be inserted into the road surface and requires the operator to apply pressure to prevent the repair device from popping out during high-pressure grouting, thus improving the practicality of the repair device.

[0023] 2. In this utility model, the pressure block and pressure rod inside the connector are separated. The pressure rod is driven to reset by the tension of the second spring, so that the pressure rod drives the outer wall of the sealing ring to fit and seal against the inner wall of the connecting pipe, achieving a self-sealing effect. This solves the problem of preventing the leakage of residual grout during disassembly and improves the convenience of the grouting device. Attached Figure Description

[0024] Figure 1 This is a perspective view of the high-pressure grouting device for repairing cracks in old roads proposed in this utility model; Figure 2 This is a schematic diagram of the internal structure of the limiting shell of the high-pressure grouting device for repairing cracks in old roads proposed in this utility model. Figure 3 This is a schematic diagram of the limiting spike structure of the high-pressure grouting device for repairing cracks in old roads proposed in this utility model; Figure 4 A schematic diagram of the connection structure of the U-shaped grouting pipe of the high-pressure grouting device for repairing cracks in old roads proposed in this utility model. Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0025] Legend: 1. Grouting truck; 2. Storage cylinder; 3. Discharge pipe; 4. Pump body; 5. Connecting pipe; 6. Grouting pipe; 7. Limiting plate; 8. Connector; 9. Limiting shell; 10. Pressure ring one; 11. Connecting column; 12. Pressure ring two; 13. Connecting rod one; 14. Connecting rod two; 15. Limiting spike; 16. Connecting groove; 17. Connecting sleeve; 18. Steel ball; 19. First spring; 20. Pressure block; 21. Sealing cylinder; 22. Pressure rod; 23. Sealing ring one; 24. Second spring; 25. Connecting groove; 26. Sealing ring two; 27. Fastening bolt. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0027] Reference Figures 1-3 This utility model provides an embodiment of a high-pressure grouting device for repairing cracks in old roads, comprising a grouting truck 1. The grouting truck 1 is used to carry and move the entire grouting structure, providing stability and convenience for the device and ensuring normal operation under different road surface conditions. A storage cylinder 2 is fixedly connected to the top of the grouting truck 1. The storage cylinder 2 is used to store the grout to be injected, ensuring sufficient material supply during the repair operation. A discharge pipe 3 is fixedly connected to the outer wall of the storage cylinder 2, used to transport the grout from the storage cylinder 2 to other components of the grouting structure, realizing the flow and transfer of the grout. A connecting pipe 5 is provided on one side of the storage cylinder 2, connecting... Pipe 5 is used to connect with grouting pipe 6 to form a grout conveying channel, thereby ensuring the continuity of the grouting process. A conveying component is set between discharge pipe 3 and connecting pipe 5. The conveying component is used to efficiently push the grout to grouting pipe 6, so that the grout flows smoothly and improves the repair efficiency. One end of connecting pipe 5 is fixed with grouting pipe 6. Grouting pipe 6 is used to directly inject grout into the crack. It is the key component for the repair of this device and can effectively fill the road surface cracks. A limiting component is set at the bottom of grouting pipe 6. The limiting component is used to fix grouting pipe 6 during the grouting process to prevent it from popping upward due to high pressure grouting and to ensure the stability of the repair operation. The limiting assembly includes a limiting plate 7, which is fixedly connected to the outer wall of the grouting pipe 6 to enhance the stability of the structure. A limiting shell 9 is fixed to the bottom outer wall of the grouting pipe 6 to further improve the stability of the grouting pipe 6 during grouting. A sealing assembly is provided at the bottom of the limiting plate 7 to prevent grout leakage during grouting and ensure that the grout completely enters the crack. A connecting rod 14 is rotatably connected to the outer wall of the grouting pipe 6. The connecting rod 14 is connected to other mechanical parts to help maintain the balance of the operation. One end of the connecting rod 14 is rotatably connected to the connecting rod 13, which is connected to the pressure ring 12. The force application process is simplified through the connecting rod transmission. The pressure ring 12 is sleeved on the grouting pipe. On the outer wall of pipe 6, a connecting post 11 is fixed to the top of the pressure ring 12 to prevent it from dislodging during operation. The connecting post 11 supports the pressure ring 10 and improves the reliability of the overall connection. The pressure ring 10 is connected to the top of the connecting post 11. The pressure ring 10 cooperates with the grouting pipe 6 and other components to provide stable support for grouting. A limit spike 15 is fixed on one side of the connecting rod 14 to play a positioning role when the grouting pipe 6 is inserted into the ground, thereby improving the grouting accuracy. The pressure ring 10 has a fastening bolt 27 connected to its internal thread. When the limit spike 15 is extended, it is used to lock the pressure ring 10 to the outer wall of the grouting pipe 6 to ensure the stability of the structure under high pressure conditions. The conveying assembly includes a pump body 4, which is fixed on the top of the grouting vehicle 1 and serves as the power source for the grouting device, providing conveying pressure for the grout. The input end of the pump body 4 is connected to the discharge pipe 3, enabling it to draw grout from the storage cylinder 2. The output end of the pump body 4 is connected to the connecting pipe 5, ensuring that the grout smoothly enters the grouting pipe 6, thereby achieving continuous and efficient grouting. The sealing assembly includes a second sealing ring 26, which is fixed to the bottom of the limiting plate 7 and is used to seal the connection points, preventing grout leakage due to pressure and ensuring operational safety.

[0028] Reference Figure 4 and Figure 5A connector 8 is fixed to the top of the grouting pipe 6. The connector 8 is used to reliably connect with the connecting pipe 5, ensuring the stability and smoothness of the grouting pipe 6 and enhancing reliability. The connector 8 has a connecting groove 16 inside, which cooperates with the steel balls 18 in the connecting pipe 5 to achieve a stable connection and prevent grout leakage. One end of the connecting pipe 5 has a ring array of steel balls 18, which are embedded in the connecting groove 16 to ensure a tight connection and improve structural stability. A pressure block 20 is fixed inside the connector 8 to unlock the sealing cylinder 21 and allow grout to flow. A connecting sleeve 17 is slidably connected to the outer wall of the connecting pipe 5. The inner wall of the connecting sleeve 17 is in contact with the steel balls 18. A first spring 19 is sleeved on the outer wall of the connecting pipe 5. One end of the first spring 19 is fixed inside the connecting pipe 5, and the other end is fixed inside the connecting sleeve 17 to provide elastic support for the connecting sleeve 17. To stabilize the connecting sleeve 17 in its initial position, a sealing cylinder 21 is provided inside one end of the connecting pipe 5. The sealing cylinder 21 can self-seal the grout to prevent leakage when the grouting pipe 6 is disassembled from the connecting pipe 5. A connecting groove 25 is opened inside the sealing cylinder 21 to ensure effective flow of grout within the sealing cylinder 21 and improve grouting efficiency. A pressure rod 22 is slidably connected inside the sealing cylinder 21. The pressure rod 22 is used to unlock the sealing ring 23 to ensure that the grout passes smoothly through the sealing cylinder 21 and improve the reliability of the grout supply. The sealing ring 23 is fixed to the outer wall of the pressure rod 22 and fits against the inner wall of the sealing cylinder 21 to form a seal and prevent grout leakage. A second spring 24 is sleeved on the outer wall of the sealing ring 23. One end of the second spring 24 is fixed to the inner wall of the sealing cylinder 21 and the other end is fixed to the outer wall of the pressure rod 22 to provide rebound force for the pressure rod 22, ensuring that the sealing performance is stable under different pressures, while enhancing the supporting role of the pressure rod 22, thereby improving the safety and effectiveness of the grouting process.

[0029] Working principle: When using this special high-pressure grouting device for repairing cracks in old roads, firstly, the bottom of the grouting pipe 6 is inserted into the road surface to be repaired. Then, the limiting plate 7 limits the grouting pipe 6 to prevent it from being inserted too deeply. Then, the pressure ring 10 is stepped down, which drives the pressure ring 2 12 to press down through the connecting column 11. Then, the connecting rod 13 drives the connecting rod 2 14 to extend out of the limiting shell 9, so that the outer wall of the connecting rod 2 14 pierces into the soil through the limiting spike 15, fixing and limiting the grouting pipe 6. At the same time, the fastening bolt 27 is tightened so that one end of the fastening bolt 27 abuts against the outer wall of the grouting pipe 6, so that the pressure ring 10 is fixed to the outer wall of the grouting pipe 6, preventing the grouting pipe 6 from separating from the road surface during high-pressure grouting. Then, the pump body 4 input end draws out the grout from the storage cylinder 2 through the discharge pipe 3. Then, the pump body 4 output end enters the grouting pipe 6 through the connecting pipe 5 and injects it into the cracks in the road surface, achieving the effect of limiting it when inserted into the ground. When it is necessary to disassemble the connecting pipe 5 and the grouting pipe 6, simply move the connecting sleeve 17 upward to unlock the connecting sleeve 17 and the steel ball 18, and then pull out the connector 8 to separate the steel ball 18 from the connecting groove 16. The steel ball 18 retracts into the connecting pipe 5. Subsequently, the pressure block 20 inside the connector 8 separates from the pressure rod 22. The pressure rod 22 is supported by the tension of the second spring 24 and drives the pressure rod 22 to reset, so that the pressure rod 22 drives the outer wall of the sealing ring 23 to fit against the inner wall of the connecting pipe 5 for sealing, thus achieving a self-sealing effect.

Claims

1. A high-pressure grouting device for repairing cracks in old roads, comprising a grouting truck (1), characterized in that: The top of the grouting vehicle (1) is fixedly connected to a storage cylinder (2), the outer wall of the storage cylinder (2) is fixedly connected to a discharge pipe (3), a connecting pipe (5) is provided on one side of the storage cylinder (2), a conveying assembly is provided between the discharge pipe (3) and the connecting pipe (5), a grouting pipe (6) is provided at one end of the connecting pipe (5), and a limit assembly is provided at the bottom of the grouting pipe (6); The limiting component includes a limiting plate (7), which is fixedly connected to the outer wall of the grouting pipe (6). A limiting shell (9) is fixedly connected to the bottom outer wall of the grouting pipe (6). A sealing component is provided at the bottom of the limiting plate (7). A connecting rod two (14) is rotatably connected to the outer wall of the grouting pipe (6). A connecting rod one (13) is rotatably connected to one end of the connecting rod two (14). A pressure ring two (12) is rotatably connected to one end of the connecting rod one (13). The pressure ring two (12) is sleeved on the outer wall of the grouting pipe (6). A connecting column (11) is fixedly connected to the top of the pressure ring two (12). A pressure ring one (10) is fixedly connected to the top of the connecting column (11). A limiting spike (15) is fixedly connected to one side of the connecting rod two (14). A fastening bolt (27) is threadedly connected inside the pressure ring one (10).

2. The high-pressure grouting device for repairing cracks in old roads according to claim 1, characterized in that: The conveying assembly includes a pump body (4), the bottom of which is fixedly connected to the top of the grouting vehicle (1). The input end of the pump body (4) is connected to one end of the discharge pipe (3), and the output end of the pump body (4) is connected to the other end of the connecting pipe (5).

3. The high-pressure grouting device for repairing cracks in old roads according to claim 1, characterized in that: The sealing assembly includes a second sealing ring (26), the top of which is fixedly connected to the bottom of the limiting plate (7).

4. The high-pressure grouting device for repairing cracks in old roads according to claim 1, characterized in that: The top of the grouting pipe (6) is fixedly connected to a connector (8), and a connecting groove (16) is provided inside the connector (8). A steel ball (18) arranged in a ring array is provided inside one end of the connecting pipe (5). The steel ball (18) is fitted into the connecting groove (16). A pressure block (20) is fixedly connected inside the connector (8).

5. The high-pressure grouting device for repairing cracks in old roads according to claim 1, characterized in that: The outer wall of the connecting tube (5) is slidably connected to a connecting sleeve (17). The inner wall of the connecting sleeve (17) is in contact with the outer wall of the steel ball (18). A first spring (19) is sleeved on the outer wall of the connecting tube (5). One end of the first spring (19) is fixedly connected to the inside of the connecting tube (5), and the other end of the first spring (19) is fixedly connected to the inside of the connecting sleeve (17).

6. The high-pressure grouting device for repairing cracks in old roads according to claim 1, characterized in that: A sealing cylinder (21) is fixedly connected to one end of the connecting pipe (5), and a connecting groove (25) is provided inside the sealing cylinder (21).

7. The high-pressure grouting device for repairing cracks in old roads according to claim 6, characterized in that: The sealing cylinder (21) is slidably connected to a pressure rod (22), and a sealing ring (23) is fixedly connected to the outer wall of the pressure rod (22). The outer wall of the sealing ring (23) is in contact with the inner wall of the sealing cylinder (21).

8. The high-pressure grouting device for repairing cracks in old roads according to claim 7, characterized in that: The outer wall of the sealing ring (23) is fitted with a second spring (24). One end of the second spring (24) is fixedly connected to the inside of the sealing cylinder (21), and the other end of the second spring (24) is fixedly connected to the outer wall of the pressure rod (22).

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