A grouting repairing device for roadbed diseases

Abstract

The utility model discloses a kind of grouting repairing devices for roadbed disease, including grouting pipe, grouting pipe includes first grouting pipe and second grouting pipe, multiple connecting pieces are equipped with in the interval in second grouting pipe end, connecting piece is equipped with the limiting plate for limiting grouting pipe into grouting hole depth, connecting piece is equipped with telescopic sleeve outside, first grouting pipe is equipped with deformation component between connecting piece, deformation component can be deformed outward from connecting piece and pass for extruding telescopic sleeve outward deformation and be clamped into grouting hole inner wall, deformation component can be inwards for with telescopic sleeve disengagement Shrink;Second grouting pipe bottom is equipped with conical material spraying head, conical material spraying head bottom detachably connects stopper, after grouting, grouting pipe is lifted upwards and can be used to stopper stop telescopic sleeve end;The utility model solves the problem that slurry will be poured out from grouting hole and residual slurry in grouting pipe will be spilled on road to cause slurry material waste after grouting is completed and grouting pipe is pulled out in the technology of existing grouting equipment.

Description

Technical Field

[0001] This utility model relates to the field of grouting equipment technology, and in particular to a grouting repair device for roadbed defects. Background Technology

[0002] The subgrade is the foundation of the pavement structure in transportation engineering. It is a strip-shaped structure constructed according to the route location and cross-sectional requirements, bearing various forces transmitted from the pavement. It must possess sufficient strength, stability, and durability, and is a crucial guarantee for the safe and efficient operation of transportation engineering. Subgrade fill material should meet the requirements for subgrade strength and resilient modulus. The subgrade should be designed using the resilient modulus of the subgrade top surface as the design index, and the vertical compressive strain of the subgrade top surface as the verification index. The calculated value of the vertical compressive strain of the asphalt pavement subgrade top surface should meet the control requirements for permanent deformation of the asphalt pavement. For cement concrete pavement, the vertical compressive strain of the cement concrete pavement subgrade top surface does not require control. During operation, the risk of roadbed damage is increasingly prominent due to factors such as the frequency and weight of traffic loads, temperature gradients, humidity gradients, precipitation, changes in groundwater levels, and tectonic movements. The demand for safety assurance is growing daily, leading to frequent roadbed defects such as slab bottom delamination, frost heave, subsidence, cavities, collapses, and slippage. These defects pose a serious threat to the long-term safety of roads, and the continuously increasing traffic load further exacerbates roadbed deformation and damage, triggering other structural stability problems. Appropriate technical means should be adopted to treat different types of defects, especially grouting reinforcement and repair technology.

[0003] Grouting reinforcement and repair technology involves drilling holes in the road surface using a drilling rig and inserting grouting pipes. Grout is then injected into the damaged soil within the subgrade under appropriate pressure, filling and compressing the surrounding soil. This reduces porosity, increases density, and improves shear strength, bearing capacity, stability, and safety, thus resolving deformation and settlement problems caused by subgrade voids, subsidence, and cavities. The application of grouting reinforcement and repair technology in road construction and maintenance provides an effective solution to subgrade problems during the operational phase of highways. Using this technology to reinforce and treat subsidence and other defects during the operational phase avoids large-scale excavation and filling, and features simple construction processes, minimal disruption to traffic operations, ensuring safe, comfortable, and smooth highway operation, while also maintaining relatively low maintenance and reinforcement costs.

[0004] When performing grouting reinforcement treatment on subgrade defects using existing technology, the process involves first drilling grouting holes at the defect locations using drilling equipment, then thoroughly mixing the grout raw materials using mixing equipment, inserting the grouting pipe into the grouting hole, and finally injecting the grout from the grouting pipe into the defect locations of the subgrade soil that need reinforcement treatment using a grouting pump. After grouting is completed, grouting is stopped, and then the grouting pipe is pulled out of the grouting hole. Under the grouting pressure, the grout in the subgrade soil will seep out from the hole, resulting in waste of grout material. To address the issue of grout leakage, a common practice is to seal the grouting hole with a conical piece of wood after removing the grouting pipe. Once the grout has solidified, the portion of the conical wood protruding from the road surface is sawed off, and the area is then repaired. However, this method has several drawbacks. During the time interval between removing the grouting pipe and inserting the conical wood, pressurized grout may leak from the grouting hole, posing a safety hazard to the operator. Additionally, residual grout in the grouting pipe may spill onto the road, leading to waste and difficulties in subsequent cleanup. For example, a smart and environmentally friendly road repair device with patent number CN117552305B is designed for grouting road repairs, but it does not solve the problems of grout leakage after injection and residual material spilling from the grouting pipe. Utility Model Content

[0005] The purpose of this utility model is to provide a grouting repair device for roadbed defects, which solves the problem in existing grouting equipment technology that grout will overflow from the grouting hole after the grouting pipe is pulled out after grouting is completed and residual grout in the grouting pipe will spill onto the road, causing waste of grout materials.

[0006] This invention is implemented as follows: A grouting repair device for roadbed defects is provided, comprising a grouting pipe connected to a grouting pump. The grouting pipe includes a first grouting pipe and a second grouting pipe, which are connected. Multiple connectors are spaced apart at one end of the second grouting pipe facing the first grouting pipe. Each connector has a limiting plate for restricting the depth of the grouting pipe entering the grouting hole. A telescopic sleeve is fitted around the outer periphery of each connector. A deformation component is provided between the first grouting pipe and the connectors. The deformation component can deform outwards, passing through the connectors to compress the telescopic sleeve and force it into the inner wall of the grouting hole. The deformation component can also retract inwards to disengage from the telescopic sleeve. A conical nozzle is provided at the bottom of the second grouting pipe. A sealing head is detachably connected to the bottom of the conical nozzle. After grouting is completed, the grouting pipe can be lifted upwards to seal the end of the telescopic sleeve with the bottom sealing head.

[0007] In this invention, before grouting, the grouting pipe is installed downwards along the grouting hole. A limiting plate, positioned above the grouting hole, limits the depth of the grouting pipe. A deformable telescopic sleeve is fitted around the grouting pipe. A deformation component between the connector and the first grouting pipe causes the telescopic sleeve to deform outwards, allowing it to be inserted into the inner wall of the grouting hole for limiting. At this point, the grouting pipe, deformation component, and telescopic sleeve are in a relatively stable state, ensuring the stability of the grouting pipe during the grouting process. After grouting is completed, the deformation component deforms inwards and detaches from the telescopic sleeve, leaving the sleeve on the inner wall of the grouting hole. At this point, the grouting pipe is not vertically limited. By lifting the grouting pipe upwards, the telescopic sleeve can scrape and clean the grouting material from the outer wall of the grouting pipe, further reducing material waste. When the grouting pipe moves the sealing head to the bottom of the telescopic sleeve, the sealing... The plug and the bottom of the telescopic sleeve are press-fitted together to seal the grouting hole. This sealing occurs before the grouting pipe is completely pulled out, preventing grout from overflowing onto the road surface after the pipe is removed. Compared to traditional sealing methods, this reduces grout waste. Furthermore, after the pipe is pulled out, any remaining grout flows into the telescopic sleeve, filling and leveling it to ensure the grout material is flush with the road surface. This method minimizes grout waste and maximizes grout utilization. The deformable component allows the telescopic sleeve to expand, securing it tightly against the grouting hole wall. This ensures that both the grouting pipe and the telescopic sleeve maintain their relative positions during grouting, and that the plug seals the hole after grouting.

[0008] A further technical solution of this utility model is: the deformable component includes a collar, an upper chain rod and a lower chain rod, one end of the upper chain rod is hinged to the collar and the other end is hinged to the lower chain rod, the collar is sleeved on the first grouting pipe, and the lower chain rod is hinged to the end of the second grouting pipe.

[0009] The collar is fitted onto the first grouting pipe, and the lower chain rod is hinged to the end of the second grouting pipe. When the collar is subjected to a downward force, the connection between the upper and lower chain rods will deform outward, thus extending out of the second grouting pipe to squeeze and deform the telescopic sleeve. The deformed telescopic sleeve will get stuck into the inner wall of the grouting hole, thereby limiting the grouting pipe. When grouting is completed, the collar moves upward, and the upper and lower chain rods will deform inward, thus disengaging from the telescopic sleeve. At this time, the grouting pipe is no longer restricted vertically and can be pulled out upward.

[0010] A further technical solution of this utility model is: a fastening component that can move up and down is sleeved on the first grouting pipe, and the lower end of the fastening component is rotatably connected to the collar.

[0011] The fastening components move up and down on the first grouting pipe, thereby driving the collar to move up and down, achieving outward and inward deformation between the upper and lower chain rods.

[0012] A further technical solution of this utility model is: the fastening component includes a transmission component and a movable ring rotatably connected to the collar, and the first grouting pipe is provided with a thread that is threadedly connected to the transmission component.

[0013] The transmission component of the fastening member is threadedly connected to the first grouting pipe. The movable ring rotates up and down. Since the movable ring is rotatably connected to the collar and the lower chain rod is hinged to the end of the second grouting pipe, the movable ring drives the collar to move up and down without rotating.

[0014] A further technical solution of this utility model is: the connection between the upper chain rod and the lower chain rod is aligned with the deformation point of the telescopic sleeve.

[0015] To ensure that the deformed part of the telescopic sleeve can be smoothly inserted into the inner wall of the grouting hole, and to avoid deformation at the connection between the bottom of the telescopic sleeve and the sealing head.

[0016] A further technical solution of this utility model is: the telescopic sleeve includes a telescopic part and a limiting ring connected to the top of the telescopic part. The telescopic part can deform outward when squeezed by the deformation component. The limiting ring is placed below the limiting plate and is detachably connected to the limiting plate.

[0017] When the telescopic sleeve moves along the axial direction of the second grouting pipe, the telescopic sleeve can be limited when the top baffle contacts the bottom of the limiting plate. At this time, the telescopic part corresponds to the deformable part of the deformation component. When the deformation component deforms, it can squeeze the telescopic part to deform.

[0018] A further technical solution of this utility model is: the outer periphery of the sealing head is provided with an inclined surface, and the outer diameter of the sealing head is larger than the inner diameter of the bottom of the telescopic sleeve and smaller than the diameter of the limiting plate.

[0019] The outer periphery of the plugging head is provided with a bevel, which can guide the plugging head to align with the telescopic sleeve. The outer diameter of the plugging head is larger than that of the telescopic sleeve, ensuring that the plugging head can be locked at the bottom of the telescopic sleeve to achieve sealing when it moves upward. Moreover, the outer diameter of the plugging head is smaller than that of the limiting plate, ensuring that the lower part of the limiting plate can move smoothly downward along the grouting hole.

[0020] A further technical solution of this utility model is: the repair device further includes a transverse guide rod and a support structure. The transverse guide rod is connected to the first grouting pipe through a support structure. The support structure is sleeved on the outer periphery of the grouting pipe. The transverse guide rod can slide up and down along the support structure.

[0021] The first grouting pipe is connected to the support structure via a transverse guide rod. The support structure is located on the outer periphery of the grouting pipe, which ensures the stability of the grouting pipe during the grouting process.

[0022] A further technical solution of this utility model is: the support structure includes a support ring, leg rods, foot plates, and vertical slide rail channel steel. The vertical slide rail channel steel is used to connect the upper and lower support rings. The foot plates are connected to the lower support rings through the leg rods. The horizontal guide rod is slidably connected to the vertical slide rail channel steel through a sliding block at its end.

[0023] The grouting pipe is slidably connected to the vertical slide rail channel steel via a horizontal guide rod. After the grouting pipe is inserted into the grouting hole, the entire support structure is limited by the contact between the foot plate and the ground, further ensuring the stability of the grouting pipe.

[0024] This utility model also provides a method for grouting repair of roadbed defects, the method comprising the following steps:

[0025] S1. Inspect the road and mark the grouting positions of the roadbed to be repaired. Then, drill grouting holes downward at the marked positions using drilling equipment. Install the above-mentioned repair device above the grouting holes and move the grouting pipe downward along the grouting holes until the limiting plate is stuck in the grouting hole position.

[0026] S2. The deformable component deforms outward and passes through the connection between the connectors, thereby squeezing the telescopic sleeve placed outside the connector, causing the telescopic sleeve to deform outward and get stuck into the inner wall of the grouting hole, thus limiting the position of the repair device in the grouting hole.

[0027] S3. The grout is pumped through the first grouting pipe into the second grouting pipe, and then sprayed out from the bottom of the second grouting pipe into the conical nozzle to fill and squeeze the roadbed defects for repair. The grouting is then completed.

[0028] S4. The deformation component deforms inward and detaches from the telescopic sleeve. The telescopic sleeve remains on the inner wall of the grouting hole. The grouting pipe is pulled upward so that the sealing head seals the bottom of the sleeve. The grouting pipe continues to move upward until it is completely removed. Then, the grout in the grouting hole is scraped level with the road surface to complete the grouting repair of the roadbed defects.

[0029] The beneficial effects of this utility model are:

[0030] 1. This utility model, through the design of a telescopic sleeve and a sealing head, can seal the grouting hole by embedding the sealing head into the bottom of the telescopic sleeve before the grouting pipe is completely pulled out, thus preventing grout from the subgrade soil from gushing out onto the road surface. At the same time, when the grouting pipe is removed from the telescopic sleeve, the grout remaining in the grouting pipe will flow into the telescopic sleeve. This solves the problems in existing grouting equipment technology, such as grout gushing out from the grouting hole after the grouting pipe is pulled out after grouting is completed, and the grout remaining in the grouting pipe spilling onto the road, causing waste of grout material.

[0031] 2. The telescopic sleeve of this utility model can also scrape and clean the grout on the outer wall of the grouting pipe when it is pulled out, so as to avoid excessive grout remaining on the outside of the grouting pipe and spilling onto the road, thus further reducing grout waste.

[0032] 3. This utility model allows the telescopic sleeve to expand by setting a deformation component. When the telescopic sleeve is inserted into the grouting hole, the rotating transmission component moves down along the grouting pipe, and the deformation component expands the telescopic sleeve outward, so that the telescopic sleeve is tightly attached to the wall of the grouting hole after expansion. On the one hand, it can realize that no operator needs to support the grouting pipe during the grouting process, and on the other hand, it can realize that the grouting hole can be sealed with the sealing head after the grouting is completed. Attached Figure Description

[0033] Figure 1 This is a schematic diagram showing the usage status of a grouting repair device for roadbed defects provided by this utility model;

[0034] Figure 2 This is a schematic diagram of the structure of a grouting repair device for roadbed defects provided by this utility model;

[0035] Figure 3 This is a schematic diagram of the grouting repair device for roadbed defects provided by this utility model without the support frame installed.

[0036] Figure 4 This is a schematic diagram of the support structure provided by this utility model;

[0037] Figure 5 This utility model provides Figure 3 Cross-sectional view;

[0038] Figure 6 Provided by this utility model Figure 3 A schematic diagram of the structure without the telescopic sleeve installed;

[0039] Figure 7 Provided by this utility model Figure 6 A schematic diagram of the cross-sectional structure;

[0040] Figure 8 This utility model Figure 7 A magnified view of a portion of point A in the middle;

[0041] Figure 9 A schematic diagram of the grouting pipe and support structure provided by this utility model;

[0042] Figure 10 A schematic diagram of the telescopic sleeve structure provided by this utility model;

[0043] Figure 11 A schematic diagram of the sealing head structure provided by this utility model;

[0044] Figure 12 A schematic diagram of the fastening component structure provided by this utility model;

[0045] Figure 13 A schematic diagram of the deformable component structure provided by this utility model.

[0046] Figure label:

[0047] 1. Connecting pipe;

[0048] 2. Support structure; 21. Hexagonal support block;

[0049] 3. Fastening components; 31. Transmission components; 32. Moving ring;

[0050] 4. Deformation assembly; 41. Collar; 42. Upper chain rod; 43. Lower chain rod;

[0051] 5. Telescopic sleeve; 51. Telescopic part; 52. Limiting ring;

[0052] 6. Grouting pipe; 61. First grouting pipe; 62. Second grouting pipe; 63. Thread; 64. Limiting plate; 65. Slot;

[0053] 7. Spray nozzle;

[0054] 8. End cap; 81. Top surface; 82. Sloping surface; 83. Bottom surface;

[0055] 9. Vertical slide rail channel steel; 91. Support ring; 92. Leg rod; 93. Foot plate; 94. Handle;

[0056] 10. Lateral guide rod; 101. Sliding block;

[0057] 11. Road surface;

[0058] 12. Roadbed;

[0059] 13. Filling section. Detailed Implementation

[0060] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0061] Example 1:

[0062] like Figure 1-13The device shown is a grouting repair device for roadbed defects, including a grouting pipe 6 connected to a grouting pump. The grouting pipe 6 includes a first grouting pipe 61 and a second grouting pipe 62. The end of the second grouting pipe 62 facing the first grouting pipe 61 is provided with a plurality of connectors at intervals. The connectors are provided with limiting plates 64 for limiting the depth of the grouting pipe 6 entering the grouting hole. A telescopic sleeve 5 is sleeved on the outer periphery of the connectors. A deformation component 4 is provided between the first grouting pipe 61 and the connectors. The deformation component 4 can deform outward and pass through the space between the connectors to squeeze the telescopic sleeve 5 outward and insert it into the inner wall of the grouting hole. The deformation component 4 can retract inward to disengage from the telescopic sleeve 5.

[0063] The bottom of the second grouting pipe 62 is provided with a conical spray head 7, and the bottom of the conical spray head 7 is detachably connected to a sealing head 8. After grouting is completed, the grouting pipe can be pulled upwards to seal the end of the telescopic sleeve with the bottom sealing head.

[0064] In this invention, before grouting, the grouting pipe is installed downwards along the grouting hole. A limiting plate, positioned above the grouting hole, limits the depth of the grouting pipe. A deformable telescopic sleeve is fitted around the grouting pipe. A deformation component between the connector and the first grouting pipe causes the telescopic sleeve to deform outwards, allowing it to be inserted into the inner wall of the grouting hole for limiting. At this point, the grouting pipe, deformation component, and telescopic sleeve are in a relatively stable state, ensuring the stability of the grouting pipe during the grouting process. After grouting is completed, the deformation component deforms inwards and detaches from the telescopic sleeve, leaving the sleeve on the inner wall of the grouting hole. At this point, the grouting pipe is not vertically limited. By lifting the grouting pipe upwards, the telescopic sleeve can scrape and clean the grouting material from the outer wall of the grouting pipe, further reducing material waste. When the grouting pipe moves the sealing head to the bottom of the telescopic sleeve, the sealing... The plug and the bottom of the telescopic sleeve are press-fitted together to seal the grouting hole. This sealing occurs before the grouting pipe is completely pulled out, preventing grout from overflowing onto the road surface after the pipe is removed. Compared to traditional sealing methods, this reduces grout waste. Furthermore, after the pipe is pulled out, any remaining grout flows into the telescopic sleeve, filling and leveling it to ensure the grout material is flush with the road surface. This method minimizes grout waste and maximizes grout utilization. The deformable component allows the telescopic sleeve to expand, securing it tightly against the grouting hole wall. This ensures that both the grouting pipe and the telescopic sleeve maintain their relative positions during grouting, and that the plug seals the hole after grouting.

[0065] In this embodiment, the grouting pipe 6, the telescopic sleeve 5, and the spray head 7 are collectively referred to as the pipe assembly.

[0066] In this embodiment, the diameter of the first grouting pipe 61 is smaller than the diameter of the second grouting pipe 62.

[0067] In this embodiment, the second grouting pipe 62 is coaxially connected with the first grouting pipe 61 and is an integral structure; the second grouting pipe 62 enters downward toward the grouting hole, and the first grouting pipe 61 is connected to the grouting pump through the connecting pipe 1.

[0068] In this embodiment, the connector at the top of the second grouting pipe 62 is a plurality of arc-shaped pieces that extend upward, and the top of the arc-shaped pieces is provided with a limiting plate 64 to limit the depth of the grouting pipe 6 entering the grouting hole. Specifically, a connector with a limiting plate 64 is fixedly installed at the top of the second grouting pipe 62 of the grouting pipe 6. The limiting plate 64 is used to limit the upward movement of the telescopic sleeve 5 on the grouting pipe 6. During grouting, the telescopic sleeve 5 is first put on the grouting pipe 6 from the bottom upward, and the limiting ring 52 of the telescopic sleeve 5 abuts against the bottom surface of the limiting plate 64. In order to prevent the telescopic sleeve 5 from sliding freely on the grouting pipe 6, a matching buckle can be set between the bottom surface of the limiting plate 64 and the telescopic sleeve 5; or a magnet can be fixedly installed on the bottom surface of the limiting plate 64, and the telescopic sleeve 5 can be made of a material that can be attracted by the magnet, so as to prevent the telescopic sleeve 5 from sliding freely on the grouting pipe 6. At the same time, the limiting plate 64 extends outward from the top of the second grouting pipe 62, and the diameter of the grouting hole is smaller than that of the limiting plate 64. The depth of the grouting pipe 6 inserted into the grouting hole can be limited by the limiting plate 64.

[0069] In this embodiment, the telescopic sleeve 5 is fitted at the point where the diameters of the first grouting pipe 61 and the second grouting pipe 62 change in the middle of the grouting pipe 6; the telescopic part 51 of the telescopic sleeve 5 is on the outer periphery of the connector. The telescopic sleeve 5 is fitted from the discharge end to the inlet end of the second grouting pipe 62 until the telescopic sleeve 5 is limited by the limiting plate 64.

[0070] In this embodiment, the spray head 7 is conical, and the diameter of the end of the spray head 7 connected to the second grouting pipe 62 is larger than the diameter of the end of the spray head 7 connected to the sealing head 8; the conical spray head is provided with grouting holes, which are arranged in a quincunx pattern, for the grout to flow out from the grouting holes and enter the subgrade soil to be filled and squeezed.

[0071] In this embodiment, the deformable component 4 includes a collar 41, an upper chain rod 42, and a lower chain rod 43. One end of the upper chain rod 42 is hinged to the collar 41, and the other end is hinged to the lower chain rod 43. The collar 41 is sleeved on the first grouting pipe 61, and the lower chain rod 43 is hinged to the end of the second grouting pipe 62.

[0072] The collar is fitted onto the first grouting pipe, and the lower chain rod is hinged to the end of the second grouting pipe. When the collar is subjected to a downward force, the connection between the upper and lower chain rods will deform outward, thus extending out of the second grouting pipe to squeeze and deform the telescopic sleeve. The deformed telescopic sleeve will get stuck into the inner wall of the grouting hole, thereby limiting the grouting pipe. When grouting is completed, the collar moves upward, and the upper and lower chain rods will deform inward, thus disengaging from the telescopic sleeve. At this time, the grouting pipe is no longer restricted vertically and can be pulled out upward.

[0073] In this embodiment, the collar 41 is sleeved on the first grouting pipe 61 and positioned above the limiting plate 64. The lower chain rod 43 is placed in the groove 65 between the end connectors of the second grouting pipe 62 and is rotatable. The upper chain rod 42 and the lower chain rod 43 are placed in the space between the connector and the first grouting pipe 61. When the upper chain rod 42 and the lower chain rod 43 are subjected to a downward force and deform outward, they pass through the space between the connectors.

[0074] In this embodiment, a groove 65 is formed between the connectors at the ends of the second grouting pipe 62 for hinged engagement with the deformation component 4. The groove 65 is opened along the axial direction of the second grouting pipe 62 and is open at the top. When the deformation component 4 deforms outward, it extends through the groove 65 to press against the telescopic sleeve 5.

[0075] In this embodiment, the bottom end of the lower chain rod 43 is rotatably disposed within the slot 65, and the top end of the upper chain rod 42 is rotatably connected to the bottom end of the collar 41. Both the upper chain rod 42 and the lower chain rod 43 are located within the slot 65. In this embodiment, the transmission component 31 is a hexagonal nut. When the transmission component 31 is turned, since the upper chain rod 42 and the lower chain rod 43 are located inside the slot 65, and the movable ring 32 and the collar 41 are rotatably connected, the collar 41 will not rotate with the rotation of the transmission component 31. When the collar 41 moves downward with the transmission component 31, the hinged portion of the upper chain rod 42 and the lower chain rod 43 will move outward. That is, it moves towards the telescopic part 51 of the telescopic sleeve 5, thereby deforming the telescopic part 51 outward, causing the telescopic sleeve 5 to deform and expand, thus achieving the effect of the telescopic sleeve 5 tightly adhering to the wall of the grouting hole. In this state, the telescopic sleeve 5 and the grouting pipe 6 maintain a constant relative position with the grouting hole. When the collar 41 moves upward with the transmission component 31, the hinged parts of the upper chain rod 42 and the lower chain rod 43 will move inward, that is, towards the position of the grouting pipe 6. At this time, the upper chain rod 42 and the lower chain rod 43 do not contact the telescopic sleeve 5, thereby achieving the separation of the telescopic sleeve 5 and the grouting pipe 6.

[0076] In this embodiment, a fastening member 3 that can move up and down is fitted on the first grouting pipe 61, and the lower end of the fastening member 3 is rotatably connected to the collar 41.

[0077] The fastening components move up and down on the first grouting pipe, thereby driving the collar to move up and down, achieving outward and inward deformation between the upper and lower chain rods.

[0078] In this embodiment, the fastening member 3 includes a transmission member 31 and a movable ring 32 rotatably connected to the collar 41, and the first grouting pipe 61 is provided with a thread 63 that is threadedly connected to the transmission member 31.

[0079] The transmission component of the fastening member is threadedly connected to the first grouting pipe. The movable ring rotates up and down. Since the movable ring is rotatably connected to the collar and the lower chain rod is hinged to the end of the second grouting pipe, the movable ring drives the collar to move up and down without rotating.

[0080] In this embodiment, the movable ring 32 is annular and positioned below the transmission member 31. The movable ring 32 is rotatable and is secured within the collar 41. The transmission member 31 can be rotated by using a wrench secured to its outer circumference. Specifically, the collar 41 is fitted onto the grouting pipe 6 and positioned between the thread 63 and the telescopic sleeve 5. The top end of the movable ring 32 is fixedly connected to the transmission member 31, and the bottom end of the movable ring 32 is rotatably connected to the collar 41. The collar 41 can move up and down on the grouting pipe 6. When the transmission member 31 is turned, it moves upward or downward on the grouting pipe 6. Simultaneously, the collar 41 also moves upward or downward along with the transmission member 31 under the influence of the movable ring 32.

[0081] In this embodiment, the fastening member 3 and the ring sleeve 41 are located outside the grouting hole.

[0082] In this embodiment, a fastening component 3 is provided on the upper part of the deformable component 4. The fastening component 3 includes a transmission component 31 and a movable ring 32. The grouting pipe 6 is provided with a thread 63. The transmission component 31 is threadedly connected to the thread 63, and the thread 63 is located above the telescopic sleeve 5. A support structure 2 is fixedly provided on the upper part of the grouting pipe 6. The support structure 2 includes a hexagonal support block 21 at the lower end. The hexagonal support block 21 is located above the transmission component 31. Through the transmission component 31 and the thread 63, the transmission component 31 can be controlled to move up and down along the grouting pipe 6 by turning the transmission component 31. Through the hexagonal support block 21, the transmission component 31 can be turned with one hand with a wrench, and the other hand can be used to hold the wrench on the hexagonal support block 21 to prevent the grouting pipe 6 from rotating when the transmission component 31 is turned.

[0083] In this embodiment, the connection between the upper chain rod 42 and the lower chain rod 43 is aligned with the deformed part of the telescopic sleeve 5.

[0084] In this embodiment, the upper chain rod 42 and the lower chain rod 43 are symmetrically distributed along the collar 41.

[0085] To ensure that the deformed part of the telescopic sleeve can be smoothly inserted into the inner wall of the grouting hole, and to avoid deformation at the connection between the bottom of the telescopic sleeve and the sealing head.

[0086] In this embodiment, the deformable component 4 includes a collar 41, an upper chain rod 42, and a lower chain rod 43. The bottom end of the upper chain rod 42 and the top end of the lower chain rod 43 are hinged together, and the hinged part can press against the telescopic part 51. That is, when the hinged part between the upper chain rod 42 and the lower chain rod 43 moves outward, it can drive the telescopic part 51 to expand outward, thereby achieving the effect that the deformable component 4 drives the telescopic sleeve 5 to expand and tightly adhere to the grouting hole wall.

[0087] In this embodiment, the telescopic sleeve 5 includes a telescopic part 51 and a limiting ring 52 connected to the top of the telescopic part 51. The telescopic part 51 can deform outward when squeezed by the deformation component 4. The limiting ring 52 is placed below the limiting plate 64 and is detachably connected to the limiting plate 64.

[0088] When the telescopic sleeve moves along the axial direction of the second grouting pipe, the telescopic sleeve is limited when the top limiting ring contacts the bottom of the limiting plate. At this time, the telescopic part corresponds to the deformable part of the deformation component. When the deformation component deforms, it can squeeze the telescopic part to deform.

[0089] In this embodiment, the telescopic part 51 has multiple vertical strips at one end near the limiting ring 52. The strength between the vertical strips is less than that of the complete ring at the bottom. Therefore, when the telescopic part 51 is subjected to outward compression, it will deform first and will not cause deformation of the bottom of the telescopic sleeve 5, ensuring that the sealing head 8 can be embedded in the bottom end of the telescopic sleeve 5 after grouting.

[0090] In this embodiment, the telescopic sleeve 5 has a deformable telescopic part 51 in the middle. The telescopic sleeve 5 can be made of metal such as iron or steel, so that its telescopic part 51 can deform. During use, the rotating transmission component 31 moves down along the grouting pipe 6, and the deformation component 4 squeezes the telescopic sleeve 5. The top of the telescopic sleeve 5 is limited, so that the position of the telescopic part 51 deforms outward, achieving an expansion effect. The final effect is similar to an expansion screw, so that the telescopic sleeve 5 can fit tightly against the inner wall of the grouting hole. It should be noted that in this embodiment, both the telescopic sleeve 5 and the sealing head 8 are disposable and remain in the grouting hole after grouting is completed. In this solution, in order to prevent the telescopic sleeve 5 from completely entering the grouting hole, the telescopic sleeve 5 is set with a T-shaped cross-section. The top of the telescopic sleeve 5 is provided with a limit ring 52 for overlapping with the periphery of the grouting hole to prevent the telescopic sleeve 5 from sinking down along the grouting hole.

[0091] In this embodiment, the sealing head 8 has an inclined surface 82 on its outer periphery, and the outer diameter of the sealing head 8 is larger than the inner diameter of the bottom of the telescopic sleeve 5 and smaller than the diameter of the limiting plate 64.

[0092] The outer periphery of the plugging head is provided with a bevel, which can play a guiding role, making it easy for the plugging head to be inserted from the bottom end of the telescopic sleeve, while ensuring that the plugging head and the telescopic sleeve can be aligned. The outer diameter of the plugging head is larger than that of the telescopic sleeve, ensuring that the plugging head can be locked at the bottom of the telescopic sleeve to achieve sealing when it moves upward. Moreover, the outer diameter of the plugging head is smaller than the diameter of the limiting plate, ensuring that the lower part of the limiting plate can move smoothly downward along the grouting hole.

[0093] In this embodiment, the top of the upper surface 81 of the sealing head 8 is threadedly connected to the bottom end of the spray head 7. Alternatively, a rotating snap fastener can be used for connection. By setting the sealing head 8 and the spray head 7 to be detachable, the connection between the sealing head 8 and the spray head 7 can be easily disconnected, so that after the sealing head 8 is inserted into the telescopic sleeve 5, the sealing head 8 can be effectively separated from the spray head 7.

[0094] In this embodiment, the sealing head 8 is designed with an upper bottom surface 81, an inclined surface 82, and a lower bottom surface 83 connected sequentially from top to bottom. The upper bottom surface 81 is in close contact with the nozzle 7. The inclined surface 82 is designed for better alignment with the bottom of the telescopic sleeve 5. The slope gradually leads to the bottom edge of the inclined surface 82. If the alignment between the sealing head 8 and the telescopic sleeve 5 is poor, the inclined surface 82 facilitates rotation of the sealing head 8 for easier connection. After alignment, the sealing head 8 is lifted upwards to allow the lower bottom surface 83 to fully connect with the bottom of the telescopic sleeve 5, thus forming an interference fit between the lower bottom surface 83 of the sealing head 8 and the telescopic sleeve 5. Due to the multiple contact surfaces, the sealing performance is good.

[0095] In this embodiment, the repair device further includes a transverse guide rod 10 and a support structure. The transverse guide rod 10 is connected to the first grouting pipe 61 through the support structure 2. The support structure is sleeved on the outer periphery of the grouting pipe 6, and the transverse guide rod 10 can slide up and down along the support structure.

[0096] The first grouting pipe is connected to the support structure via a transverse guide rod. The support structure is located on the outer periphery of the grouting pipe, which ensures the stability of the grouting pipe during the grouting process.

[0097] In this embodiment, the support structure 2 is fixed to the outer periphery of the first grouting pipe 61 and placed above the fastening member 3. A transverse guide rod 10 is sleeved on the support structure 2, and a hexagonal support block 21 is also provided on the support structure 2. The hexagonal support block 21 is fixed by a wrench to prevent the first grouting pipe 61 from rotating with the fastening member 3 during the rotation of the fastening member 3.

[0098] In this embodiment, the support structure includes a support ring 91, a leg rod 92, a foot plate 93, and a vertical slide rail channel steel 9. The vertical slide rail channel steel 9 is used to connect the upper and lower support rings 91. The foot plate 93 is connected to the lower support ring 91 through the leg rod 92. The horizontal guide rod 10 is slidably connected to the vertical slide rail channel steel 9 through the sliding block 101 at its end.

[0099] The grouting pipe is slidably connected to the vertical slide rail channel steel via a horizontal guide rod. After the grouting pipe is inserted into the grouting hole, the entire support structure is limited by the contact between the foot plate and the ground, further ensuring the stability of the grouting pipe.

[0100] In this embodiment, the support ring 91 is arranged vertically, the vertical slide rail channel steel 9 is inside the support ring 91, the top of the vertical slide rail channel steel 9 is open and the bottom is closed, and the sliding block 101 slides into the top of the vertical slide rail channel steel 9.

[0101] In this embodiment, a handle 94 is provided on the upper support ring 91.

[0102] In this embodiment, the horizontal guide rod 10 is rotatably mounted on the upper part of the top support structure 2. Sliding blocks 101 are fixedly mounted at both ends of the horizontal guide rod 10. Two vertical slide rail channels 9 are symmetrically arranged, and the two vertical slide rail channels 9 are fixedly connected by upper and lower bracket rings 91. The two sliding blocks 101 are slidably mounted within the two vertical slide rail channels 9. The leg rod 92 is fixedly mounted on the lower bracket ring 91 and is hinged to the foot plate 93, facilitating adjustment of the angle between the foot plate and the road contact surface and ensuring more even force distribution. The handle 94 is fixedly mounted on the upper bracket ring 91, facilitating the operator's movement and handling of the grouting device. The support structure can be used to support the grouting pipe, and the grouting pipe can move up and down on the support structure.

[0103] Example 2:

[0104] A method for grouting repair of roadbed defects, the method comprising the following steps:

[0105] S1. Inspect the road, mark the grouting position of the roadbed to be repaired, and drill grouting holes downward at the marked positions; install the repair device described in Example 1 above the grouting holes, and move the grouting pipe 6 downward along the grouting holes until the limiting plate 64 is stuck in the grouting hole position.

[0106] S2. The deformation component 4 deforms outward and presses the telescopic sleeve 5 placed on the outside of the connector, so that the telescopic sleeve 5 deforms outward and gets stuck into the inner wall of the grouting hole, and the position of the grouting pipe 6 in the grouting hole is limited.

[0107] S3. The grout is pumped into the second grouting pipe 62 through the first grouting pipe 61 and sprayed out from the bottom of the second grouting pipe 62 into the conical spray head 7 to fill and squeeze the roadbed defects for repair. The grouting is completed.

[0108] S4. The deformation component 4 deforms inward and detaches from the telescopic sleeve 5. The telescopic sleeve 5 is left inside the grouting hole. The grouting pipe 6 is pulled upward so that the sealing head 8 seals the bottom of the sleeve 5. The grouting pipe 6 continues to move upward until it is completely removed. Then, the grout in the grouting hole is scraped level with the road surface to complete the grouting repair of the roadbed defects.

[0109] In this embodiment, the grouting pump uses existing conventional equipment. After the grout is fully mixed by the grouting pump, it is pumped into the grouting pipe 6 through the connecting pipe 1 and sprayed out through the conical nozzle 7 of the grouting pipe 6 to fill and compress the damaged areas of the roadbed soil. The grouting hole can be sealed by the telescopic sleeve 5 and the sealing head 8 before the grouting pipe 6 is completely pulled out. This early sealing of the grouting hole prevents the grout injected into the grouting hole from gushing out of the road surface after the grouting pipe 6 is pulled out. Compared with traditional sealing methods, this reduces grout waste. At the same time, after the grouting pipe 6 is pulled out, the grout remaining in the grouting pipe 6 will flow into the telescopic sleeve 5. The grout is used to fill and level the telescopic sleeve 5, making the grouting material in the grouting hole flush with the road surface. This grouting method reduces grout waste and makes full use of the grout. In addition, the telescopic sleeve 5 can be used to scrape and clean the outer wall of the grouting pipe 6 during the pulling out process, further reducing grout waste. The deformation component 4 can cause the telescopic sleeve 5 to expand, so that the telescopic sleeve 5 can be fixed tightly against the wall of the grouting hole. On the one hand, during the grouting process, the grouting pipe 6 and the telescopic sleeve 5 maintain a constant relative position with the grouting hole. On the other hand, after the grouting is completed, it can be used with the sealing head 8 to seal the grouting hole.

[0110] The working principle of this utility model is as follows: First, non-destructive testing of the road is performed using existing equipment, and the grouting positions of the subgrade 12 to be repaired are marked on the road surface 11. Then, grouting holes are drilled downwards at the marked positions using drilling equipment, while the grout raw materials are thoroughly mixed using mixing equipment. All of the above steps are conventional methods. It should be noted that the diameter of the drilled hole is consistent with the outer diameter of the telescopic sleeve 5. Then, the grouting pipe 6 is connected to the grouting pump using the connecting pipe 1. After the above preparations are completed, the telescopic sleeve 5 is fitted onto the grouting pipe 6 from bottom to top, and... The limiting ring 52 of the telescopic sleeve 5 is placed against the bottom of the limiting plate 64. Then, the sealing head 8, which matches the telescopic sleeve 5, is installed at the bottom end of the spray head 7 at the bottom end of the grouting pipe 6. The sealing head 8 can be installed with the bottom end of the grouting pipe 6 by thread or rotation. Then, the transverse guide rod 10 and the bracket structure, together with the grouting pipe 6, are placed above the grouting hole and adjusted so that the grouting pipe 6 is directly above the grouting hole. Then, the grouting pipe 6 is inserted into the grouting hole. The grouting pipe 6 is inserted when the upper edge of the limiting ring 52 of the telescopic sleeve 5 contacts the road surface around the grouting hole. For a reference state after insertion into the hole, see [link to relevant documentation]. Figure 1 Then, using a wrench, the transmission component 31 is turned downwards, causing the collar 41 to move downwards. This causes the hinge position of the upper chain rod 42 and the lower chain rod 43 to move outwards, pressing against the telescopic part 51 of the telescopic sleeve 5. This causes the telescopic part 51 of the telescopic sleeve 5 to expand outwards and deform, thus making the telescopic sleeve 5 tightly fit against the wall of the grouting hole. At this time, the telescopic sleeve 5, the grouting pipe 6, and the grouting hole maintain their relative positions. Then, the grouting pump is started to inject grout into the grouting hole. The subgrade soil defects are filled and compressed for repair, forming a filling part 13 at the defective subgrade soil. After grouting is completed, grouting is stopped. Then, the transmission component 31 is turned with a wrench, causing the transmission component 31 to move the collar 41 upward. This causes the hinge position of the upper chain rod 42 and the lower chain rod 43 to move inward. At this time, there is no limit between the grouting pipe 6 and the telescopic sleeve 5. Then, the grouting pipe 6 is pulled upward. During the pulling process, the telescopic sleeve 5 scrapes and cleans the outer wall of the grouting pipe 6 to avoid excessive grout residue on the outside of the grouting pipe 6. When liquid spills onto the road, the sealing head 8 encounters resistance upon contacting the bottom end of the telescopic sleeve 5. At this point, it needs to be pulled upwards to embed the inclined surface 82 of the sealing head 8 into the telescopic sleeve 5. Because the sealing head 8 and the telescopic sleeve 5 have an interference fit after embedding, the position of the sealing head 8 is fixed, preventing it from easily rotating or sliding within the telescopic sleeve 5. Then, the grouting pipe 6 is rotated to disengage the sealing head 8 from the spray nozzle 7 at the bottom of the grouting pipe 6. The telescopic sleeve 5 and the sealing head 8 work together to seal the grouting hole, preventing grout from escaping out of the grouting hole. After the grouting pipe 6 and the sealing head 8 are separated, the grouting pipe 6 is pulled upwards. At this time, the grout remaining in the grouting pipe 6 will flow into the telescopic sleeve 5, filling the interior of the telescopic sleeve 5 between the limiting ring 52 and the sealing head 8. After the grout remaining in the grouting pipe 6 flows out, the grouting pipe 6 is completely removed. Then, a scraper is used to scrape the grout on the upper layer of the telescopic sleeve 5 to level with the road surface, thus completing the grouting operation.

[0111] 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 and improvements 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. A grouting repair device for roadbed defects, comprising a grouting pipe (6) connected to a grouting pump. characterized in that The grouting pipe (6) includes a first grouting pipe (61) and a second grouting pipe (62). The first grouting pipe (61) is connected to the second grouting pipe (62), and the diameter of the first grouting pipe (61) is smaller than that of the second grouting pipe (62). The second grouting pipe (62) is provided with a plurality of connectors at intervals at one end facing the first grouting pipe (61). The connectors are provided with a limiting plate (64) for limiting the depth of the grouting pipe (6) entering the grouting hole. The connectors are fitted with a telescopic sleeve (5). A deformation component (4) is provided between the first grouting pipe (61) and the connectors. The deformation component (4) can deform outward and pass through the connectors to squeeze the telescopic sleeve (5) outward and deform into the inner wall of the grouting hole. The deformation component (4) can retract inward to disengage from the telescopic sleeve (5). The bottom of the second grouting pipe (62) is provided with a conical spray head (7), and the bottom of the conical spray head (7) is detachably connected to the sealing head (8). The grouting pipe (6) can be pulled up to seal the end of the telescopic sleeve (5) with the sealing head (8).

2. The device for grouting repair of subgrade diseases according to claim 1, characterized in that: The deformable component (4) includes a collar (41), an upper chain rod (42) and a lower chain rod (43). One end of the upper chain rod (42) is hinged to the collar (41) and the other end is hinged to the lower chain rod (43). The collar (41) is sleeved on the first grouting pipe (61), and the lower chain rod (43) is hinged to the end of the second grouting pipe (62).

3. The device for grouting repair of subgrade diseases according to claim 2, characterized in that: The first grouting pipe (61) is fitted with a fastening member (3) that can move up and down, and the lower end of the fastening member (3) is rotatably connected to the collar (41).

4. The device for grouting repair of subgrade diseases according to claim 3, characterized in that: The fastening component (3) includes a transmission component (31) and a movable ring (32) rotatably connected to the collar (41). The first grouting pipe (61) is provided with a thread (63) that is threadedly connected to the transmission component (31).

5. The device for grouting repair of subgrade diseases according to claim 2, characterized in that: The connection between the upper chain rod (42) and the lower chain rod (43) is aligned with the deformed part of the telescopic sleeve (5).

6. The device for grouting repair of subgrade diseases according to any one of claims 1-5, characterized in that: The telescopic sleeve (5) includes a telescopic part (51) and a limiting ring (52) connected to the top of the telescopic part (51). The telescopic part (51) can deform outward when squeezed by the deformation component (4). The limiting ring (52) is placed below the limiting plate (64) and is detachably connected to the limiting plate (64).

7. The device for grouting repair of subgrade diseases according to any one of claims 1-5, characterized in that: The sealing head (8) has an inclined surface (82) on its outer periphery. The outer diameter of the sealing head (8) is greater than the inner diameter of the bottom of the telescopic sleeve (5) and smaller than the diameter of the limiting plate (64).

8. The device for grouting repair of subgrade diseases according to any one of claims 1-5, characterized in that: The repair device also includes a transverse guide rod (10) and a support structure. The transverse guide rod (10) is connected to the first grouting pipe (61) through a support structure (2). The support structure is sleeved on the outer periphery of the grouting pipe (6). The transverse guide rod (10) can slide up and down along the support structure.

9. The device for the grouting repair of subgrade diseases according to claim 8, characterized in that: The support structure comprises a support ring (91), a leg rod (92), a foot plate (93) and a vertical sliding rail channel steel (9) for connecting the upper and lower support rings (91), the foot plate (93) is connected with the lower support ring (91) through the leg rod (92), and the horizontal guide rod (10) is slidably connected with the vertical sliding rail channel steel (9) through the sliding block (101) at the end.

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