Intelligent grouting flow control device for repairing asphalt pavement cracks

Abstract

The application discloses an intelligent grouting flow control device for repairing asphalt pavement cracks and belongs to the field of pavement crack grouting repair. The bottom end of the sponge buffer grouting body is provided with a sponge buffer area, and a plurality of air chamber holes for balancing pressure are arranged on the sponge buffer grouting body. The application adopts the intelligent grouting flow control device for repairing asphalt pavement cracks, controls the grouting pressure and flow of the grouting pump through the operation type integrated control platform, balances the grouting pressure through the sponge buffer grouting body, and makes the grouting more uniform.

Description

Technical Field

[0001] This invention relates to the field of road surface crack grouting repair technology, and in particular to an intelligent grouting flow control device for repairing asphalt pavement cracks. Background Technology

[0002] Grouting repair of road cracks is a common road maintenance method. It involves injecting a specially formulated grout into the cracks under pressure, filling the cracks, bonding the two sides of the joint, preventing moisture penetration and further damage, thereby restoring the integrity and load-bearing capacity of the road surface. This process generally includes steps such as cleaning the cracks, installing grouting nozzles, injecting the grout, and sealing the cracks.

[0003] In existing road crack grouting repair methods, grout is typically delivered to the cracks via a grouting pump through pipes and nozzles. This method lacks the ability to monitor grouting pressure and flow rate, and cannot adjust these parameters based on specific grouting conditions. Furthermore, injecting grout directly into the cracks through nozzles can lead to uneven grouting, negatively impacting the final grouting quality. Summary of the Invention

[0004] To address the problems mentioned above, this invention provides an intelligent grouting flow control device for repairing cracks in asphalt pavements. This device controls the grouting pressure and flow rate of the grouting pump through an operational integrated control platform, and balances the grouting pressure using a sponge-buffered grouting body, resulting in more uniform grouting.

[0005] To achieve the above objectives, the present invention provides an intelligent grouting flow control device for repairing cracks in asphalt pavement, comprising a grouting pump, which is mounted on an operational integrated control platform with a movable lifting function. The bottom of the operational integrated control platform is provided with a movable structure. One end of the grouting pump is connected to a grout mixing device through a connecting pipe one, and the other end of the grouting pump is connected to a connecting pipe two. The connecting pipe two is connected to a sponge buffer grouting body through a bidirectional joint. The grouting pump is equipped with a pressure sensor for monitoring grouting pressure and a flow control sensor for monitoring grouting flow.

[0006] The bottom end of the sponge buffer grouting body is provided with a sponge buffer zone for grouting, and the sponge buffer grouting body is provided with several air chamber holes for balancing pressure.

[0007] Preferably, the sponge buffer grouting body includes a rigid cover plate at the top, and telescopic side plates are provided around the four sides of the rigid cover plate. The top of the telescopic side plates is connected to the bottom of the rigid cover plate, and a sealing structure is provided at the bottom of the telescopic side plates.

[0008] Preferably, four telescopic side panels are provided, each with a corrugated structure that has a telescopic function. The four telescopic side panels are an integral structure, and the four telescopic side panels are arranged to form a square corrugated pipe.

[0009] Preferably, the sealing structure includes a rubber sealing strip disposed on the bottom edge of the telescopic side panel and a triangular rubber connecting strip disposed at the connection between adjacent telescopic side panels, with the head and tail of the rubber sealing strip connected to the two triangular rubber connecting strips respectively.

[0010] Preferably, the sponge buffer grouting body is filled with sponge buffer material, the sponge buffer is a cavity with an open bottom, and the hard cover plate is provided with a grouting port, which penetrates the sponge buffer material and communicates with the sponge buffer.

[0011] Preferably, the air chamber holes are evenly distributed on both sides of the grouting hole, the air chamber holes penetrate the sponge buffer material and are connected to the sponge buffer zone, and a pressure probe for monitoring the grouting pressure and a one-way valve for balancing the pressure are installed in the air chamber holes.

[0012] Preferably, the sponge cushioning material is EPDM (ethylene propylene diene monomer) rubber sponge, CR (chloroprene rubber) sponge, or SBR (styrene-butadiene rubber) sponge.

[0013] Preferably, the operable integrated control platform includes a platform surface, a control box connected to a pressure sensor and a flow control sensor is installed at the bottom of the platform surface, a touch control screen is rotatably installed on the platform surface, the platform surface is connected to a rear plate, and the rear plate is connected to the bottom of the touch control screen through a pitch adjustment structure; a lifting rod is installed at the bottom of the platform surface, the lifting rod is connected to the base through a lifting structure, and the grouting pump is installed on the base.

[0014] Preferably, the pitch adjustment structure includes a telescopic cylinder, the bottom end of which is rotatably connected to the rear plate, and the top end of which is rotatably connected to the bottom end of the touch control screen.

[0015] The lifting structure includes a lifting sleeve rod, a lifting rod inserted into the lifting sleeve rod and slidably connected to the lifting sleeve rod, a lifting ring slidably sleeved on the lifting sleeve rod, the lifting ring being connected to a connecting block via a connecting rod, the connecting block being disposed on the lifting rod, and the lifting sleeve rod having an elongated opening for the connecting block to slide through, the connecting block being slidably connected to the elongated opening; a connecting plate is connected between adjacent lifting rings, and a telescopic cylinder two is disposed at the top of the base, the telescopic rod of the telescopic cylinder two being connected to the bottom end of the connecting plate;

[0016] The movable structure includes two omnidirectional wheels and two fixed wheels, both of which are located at the bottom of the base.

[0017] Preferably, one end of the bidirectional joint is provided with a threaded tube, the top end of which is provided with a limiting piece, and a compression opening is provided on the threaded tube. A threaded sleeve is threadedly connected to the threaded tube, and the threaded tube is locked to the connecting tube 2 through the threaded sleeve. The other end of the bidirectional joint is provided with a threaded tube 2, the top end of which is provided with a thread, and the threaded tube 2 is threadedly connected to the top end of the grouting opening.

[0018] Therefore, the present invention employs the above-mentioned intelligent grouting flow control device for repairing asphalt pavement cracks, which has the following beneficial effects:

[0019] (1) The present invention uses an operational integrated control platform with mobile function to facilitate the movement of the grouting pump, which can be quickly moved to the target location and facilitate the use of the grouting pump. At the same time, the pressure sensor on the grouting pump can monitor the change of grouting pressure and the flow control sensor can monitor the change of grouting flow. The power of the grouting pump can be adjusted through the operational integrated control platform to achieve the purpose of stable grout output.

[0020] (2) The present invention can adjust the height of the operating integrated control platform through the lifting structure, which is suitable for different workers to operate and use. By sliding the lifting rod inside the lifting sleeve and the lifting ring sliding on the lifting sleeve, the stability during lifting can be improved.

[0021] (3) The present invention provides confining pressure through the sponge buffer of the sponge buffer grouting body, thereby better diffusing the grouting downward to a certain depth and achieving uniform grouting. The grouting pressure is monitored through the air chamber with pressure probe. If the pressure is too high, the grout is discharged from the air chamber through the one-way valve to balance the pressure and make the confining pressure stable. At the same time, the operation-type integrated control platform and the grouting pump are used to regulate the grouting pressure and grouting flow rate to achieve a more stable grouting effect.

[0022] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the intelligent grouting flow control device according to an embodiment of the present invention;

[0024] Figure 2 This is a perspective view of the operational integrated control platform according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A;

[0026] Figure 4 This is a perspective view of the sponge buffer grouting body according to an embodiment of the present invention;

[0027] Figure 5This is a schematic diagram of the three-dimensional internal structure of the sponge buffer grouting body according to an embodiment of the present invention;

[0028] Figure 6 This is a bottom view of the sponge buffer grouting body according to an embodiment of the present invention;

[0029] Figure 7 for Figure 5 Enlarged view of point B;

[0030] Figure 8 This is a front view of a bidirectional connector according to an embodiment of the present invention;

[0031] Figure 9 This is a top view of the bidirectional connector according to an embodiment of the present invention.

[0032] Figure Labels

[0033] 1. Grouting pump; 101. Pressure sensor; 102. Flow control sensor; 103. Connecting pipe one; 104. Connecting pipe two; 2. Operable integrated control platform; 201. Platform surface; 202. Control box; 203. Touch control screen; 204. Rear plate; 205. Telescopic cylinder one; 206. Base; 207. Lifting rod; 208. Lifting sleeve rod; 209. Lifting ring; 210. Connecting rod; 211. Connecting block; 212. Long opening ; 213. Connecting plate; 214. Telescopic cylinder II; 3. Sponge buffer grouting body; 301. Hard cover plate; 302. Telescopic side plate; 303. Rubber sealing strip; 304. Triangular rubber connecting strip; 305. Sponge buffer zone; 306. Sponge buffer material; 307. Grouting port; 308. Air chamber hole; 4. Two-way joint; 401. Threaded pipe I; 402. Limiting plate; 403. Extrusion opening; 404. Threaded sleeve; 405. Threaded pipe II. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages disclosed in the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without creative effort are within the scope of protection of this application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0035] It should be noted that the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products, or devices.

[0036] Similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0038] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] like Figure 1 As shown, the intelligent grouting flow control device for repairing asphalt pavement cracks according to the present invention includes a grouting pump 1. One end of the grouting pump 1 is connected to a grout mixing device via a connecting pipe 103, which adopts an existing structure. The other end of the grouting pump 1 is connected to a connecting pipe 104, which is connected to a sponge buffer grouting body 3 via a bidirectional connector 4. Both the connecting pipe 103 and the connecting pipe 104 are flexible hoses.

[0040] like Figure 4 , Figure 5As shown, the bottom end of the sponge buffer grouting body 3 is provided with a sponge buffer zone 305 for grouting, and the sponge buffer grouting body 3 is provided with several air chamber holes 308 for balancing pressure. The sponge buffer grouting body 3 includes a rigid cover plate 301 at the top, and telescopic side plates 302 are provided around the four sides of the rigid cover plate 301. The top end of the telescopic side plate 302 is connected to the bottom end of the rigid cover plate 301 by adhesive, and the bottom end of the telescopic side plate 302 is provided with a sealing structure. There are four telescopic side plates 302, and the telescopic side plates 302 are provided with corrugations with telescopic function. The four telescopic side plates 302 are an integral structure, and the four telescopic side plates 302 surround a square corrugated pipe. Figure 6 , Figure 7 As shown, the sealing structure includes a rubber sealing strip 303 disposed on the bottom edge of the telescopic side plate 302, and a triangular rubber connecting strip 304 disposed at the connection between adjacent telescopic side plates 302. The ends of the rubber sealing strip 303 are connected to two triangular rubber connecting strips 304 respectively. The sponge buffer grouting body 3 is filled with sponge buffer material 306. The sponge buffer 305 is a cavity with an open bottom. A grouting port 307 is disposed on the hard cover plate 301. The grouting port 307 penetrates the sponge buffer material 306 and communicates with the sponge buffer 305. Air chamber holes 308 are evenly distributed on both sides of the grouting holes. The air chamber holes 308 penetrate the sponge buffer material 306 and communicate with the sponge buffer 305. A pressure probe for monitoring the grouting pressure and a one-way valve for balancing the pressure are disposed in the air chamber holes 308. The sponge buffer material 306 is ethylene propylene diene monomer (EPDM) sponge, chloroprene rubber (CR) sponge, styrene-butadiene rubber (SBR) sponge, or a mixture of the three.

[0041] The aspect ratio of the sponge buffer zone 305 is greater than 2:1. Grout flows into the sponge buffer zone 305 through the grouting holes, providing confining pressure and thus facilitating better downward diffusion to a certain depth. Six or eight air chambers 308 are provided, and pressure probes within these chambers monitor the grouting pressure. When the pressure exceeds a set value, grout is discharged from the air chambers 308 through a one-way valve, stabilizing the confining pressure and preventing it from becoming excessive. When the pressure is less than or equal to the set value, the air chambers 308 close, maintaining stable confining pressure. The telescopic side plate 302 presses downward during grouting, working in conjunction with the rubber sealing strip 303 and triangular rubber connecting strip 304 at its bottom. This ensures a better seal between the sponge buffer zone 305 and the grouting gap, and also stabilizes the confining pressure, guaranteeing a balanced grouting pressure. The sponge buffer material 306 is made of ethylene propylene diene monomer (EPDM) rubber sponge, neoprene rubber sponge (CR), or styrene-butadiene rubber sponge (SBR), and has a closed-cell structure. Closed-cell structures possess characteristics such as high mechanical strength, good elasticity, low thermal conductivity, good heat insulation, waterproofing, and flame retardancy. Blending these three materials can yield different properties and improve cost-effectiveness (SBR sponge is inexpensive).

[0042] Grouting pump 1 is mounted on an operational integrated control platform 2 with movable lifting function. Grouting pump 1 is equipped with a pressure sensor 101 for monitoring grouting pressure and a flow control sensor 102 for monitoring grouting flow rate. Figure 1 , Figure 2 As shown, the operable integrated control platform 2 includes a platform surface 201, and a control box 202 connected to a pressure sensor 101 and a flow control sensor 102 is located at the bottom of the platform surface 201. A touch control screen 203 is rotatably mounted on the platform surface 201. The platform surface 201 is connected to a rear plate 204, which is connected to the bottom of the touch control screen 203 via a pitch adjustment structure. A lifting rod 207 is located at the bottom of the platform surface 201, and the lifting rod 207 is connected to a base 206 via a lifting structure. The grouting pump 1 is mounted on the base 206. The pitch adjustment structure includes a telescopic cylinder 205, the bottom of which is rotatably connected to the rear plate 204, and the top of which is rotatably connected to the bottom of the touch control screen 203. An opening is provided between the platform and the rear plate 204, and the bottom of the touch control screen 203 rotates within the opening. The lifting structure includes a lifting sleeve 208, the bottom end of which is fixed to the base 206. For example... Figure 3 As shown, the lifting rod 207 is inserted into the lifting sleeve rod 208 and slidably connected to the lifting sleeve rod 208. A lifting ring 209 is slidably sleeved on the lifting sleeve rod 208. The lifting ring 209 is connected to the connecting block 211 via a connecting rod 210. The connecting block 211 is disposed on the lifting rod 207. The lifting sleeve rod 208 is provided with an elongated opening 212 for the connecting block 211 to slide through, and the connecting block 211 is slidably connected to the elongated opening 212. A connecting plate 213 connects adjacent lifting rings 209. A telescopic cylinder 214 is provided at the top of the base 206, and the telescopic rod of the telescopic cylinder 214 is connected to the bottom end of the connecting plate 213. A movable structure is provided at the bottom of the operable integrated control platform 2. The moving structure includes two omnidirectional wheels and two directional wheels. Both the omnidirectional wheels and directional wheels are located at the bottom of the base 206. The two omnidirectional wheels are located on the side of the base 206 near the rear plate 204, and the two directional wheels are located on the side of the base 206 away from the rear plate 204. The omnidirectional wheels facilitate control of the movement direction of the operable integrated control platform 2, while the directional wheels facilitate movement of the operable integrated control platform 2 in a fixed direction.

[0043] like Figure 8 , Figure 9As shown, one end of the bidirectional connector 4 is provided with a threaded tube 401, and a limiting piece 402 is provided at the top end of the threaded tube 401. A compression opening 403 is provided on the threaded tube 401, and a threaded sleeve 404 is threadedly connected to the threaded tube 401. The threaded tube 401 is locked to the connecting tube 104 through the threaded sleeve 404. The other end of the bidirectional connector 4 is provided with a threaded tube 405, and the top end of the grouting port 307 is threaded. The threaded tube 405 is threaded to the top end of the grouting port. Through the threaded tube 401 of the bidirectional connector 4, the end of the connecting tube 104 is inserted into the threaded tube 401. The threaded sleeve 404 is tightened to the threaded tube 401, and the threaded sleeve 404 compresses the threaded tube 401, causing the compression opening 403 of the threaded tube 401 to contract inward, thus tightening the connecting tube 104. The limiting piece 402 serves to limit the threaded sleeve 404, preventing the threaded sleeve 404 from falling off the threaded tube 401.

[0044] The control box 202 houses the main controller, which, in conjunction with existing conventional structures or components, forms the control system. The control system is operated via a touch control screen 203. Grouting pump 1, telescopic cylinder one 205, telescopic cylinder two 214, pressure sensor 101, flow control sensor 102, pressure probe, and check valve are all electrically connected to the main controller using existing structures. Through the operator-integrated control platform 2, workers can select the input pressure range on the touch control screen 203 based on the type of grout, crack size, depth, and type, thereby controlling the pressure. The pressure sensor 101 on grouting pump 1 monitors changes in grouting pressure, and the flow control sensor 102 monitors changes in grouting flow rate. The power of grouting pump 1 is adjusted via the operator-integrated control platform 2 to achieve stable grout output. Telescopic cylinder one 205 and telescopic cylinder two 214 both use existing hydraulic cylinders. The telescopic lever one extends or retracts via a telescopic rod, with rotatable connections at both ends, allowing the touch control screen 203 to rotate within an opening, thus adjusting the pitch angle of the touch control screen 203. The extension or retraction of the telescopic rod of the telescopic cylinder 214 causes the connecting plate 213 to rise or fall. The rise and fall of the connecting plate 213 causes the lifting ring 209 to slide and rise or fall on the lifting sleeve 208. The rise and fall of the lifting ring 209, through the connecting rod 210 and the connecting block 211, causes the lifting rod 207 to slide and rise or fall within the lifting sleeve 208, thereby realizing the raising and lowering of the platform surface 201. The tilt angle and the lifting height of the platform surface 201 can be adjusted by the touch control screen 203, making it suitable for different workers and more convenient to operate.

[0045] How to use:

[0046] Step 1: Move the integrated control platform 2 to the target location. The grouting pump 1 is connected to the connecting pipe 103 and the connecting pipe 204. The connecting pipe 204 is connected to the sponge buffer grouting body 3 through the bidirectional connector 4. Adjust the pitch angle of the touch control screen 203 and the height of the platform surface 201.

[0047] Step 2: Place the sponge buffer grouting body 3 at the road surface gap that needs grouting, and align the sponge buffer 305 with the road surface gap;

[0048] Step 3: The worker presses the sponge buffer grout body 3 tightly against the road surface. Based on the type of grout, the size, depth, and type of the crack, the worker selects the input pressure setting value on the touch control screen 203 and starts the grouting pump 1 to begin grouting.

[0049] Step four: When the pressure is greater than the set value, the one-way valve opens and the grout is discharged from the air chamber hole 308, so that the confining pressure is stable. At the same time, the power of the grouting pump 1 is adjusted through the operation integrated control platform 2, so as to control the grouting pressure and flow rate and ensure the uniformity of grouting. When the pressure is less than or equal to the set value, the air chamber hole 308 closes, so that the confining pressure is stable.

[0050] Therefore, the present invention adopts the above-mentioned intelligent grouting flow control device for repairing cracks in asphalt pavement. The grouting pressure and flow rate of the grouting pump 1 are controlled by the operational integrated control platform 2, and the grouting pressure is balanced by the sponge buffer grouting body 3, so that the grouting is more uniform.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. An intelligent grouting flow control device for repairing cracks in asphalt pavement, characterized in that: It includes a grouting pump, which is mounted on an operational integrated control platform with a movable lifting function. The bottom of the operational integrated control platform is equipped with a movable structure. One end of the grouting pump is connected to the slurry mixing equipment through a connecting pipe one, and the other end of the grouting pump is connected to a connecting pipe two. The connecting pipe two is connected to the sponge buffer grouting body through a two-way connector. The grouting pump is equipped with a pressure sensor for monitoring grouting pressure and a flow control sensor for monitoring grouting flow rate. The bottom end of the sponge buffer grouting body is provided with a sponge buffer zone for grouting, and the sponge buffer grouting body is provided with several air chamber holes for balancing pressure. The sponge buffer grouting body includes a rigid cover plate at the top, and telescopic side plates are provided around the four sides of the rigid cover plate. The top of the telescopic side plates is connected to the bottom of the rigid cover plate, and a sealing structure is provided at the bottom of the telescopic side plates.

2. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 1, characterized in that: There are four telescopic side panels, each with a corrugated structure that allows for telescopic movement. The four telescopic side panels are integrated into a single structure, forming a square corrugated pipe.

3. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 2, characterized in that: The sealing structure includes a rubber sealing strip located on the bottom edge of the telescopic side panel and a triangular rubber connecting strip located at the connection between adjacent telescopic side panels. The head and tail of the rubber sealing strip are connected to the two triangular rubber connecting strips respectively.

4. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 1, characterized in that: The sponge buffer grouting body is filled with sponge buffer material. The sponge buffer is a cavity with an opening at the bottom. The hard cover plate is provided with a grouting port, which penetrates the sponge buffer material and communicates with the sponge buffer.

5. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 4, characterized in that: The air chamber holes are evenly distributed on both sides of the grouting port. The air chamber holes penetrate the sponge buffer material and are connected to the sponge buffer zone. A pressure probe for monitoring the grouting pressure and a one-way valve for balancing the pressure are installed in the air chamber holes.

6. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 4, characterized in that: The foam cushioning material is EPDM (ethylene propylene diene monomer) rubber foam, CR (chloroprene rubber) foam, or SBR (styrene-butadiene rubber) foam.

7. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 1, characterized in that: The operable integrated control platform includes a platform surface, a control box connected to a pressure sensor and a flow control sensor is installed at the bottom of the platform surface, a touch control screen is rotatably installed on the platform surface, the platform surface is connected to a rear plate, and the rear plate is connected to the bottom of the touch control screen through a pitch adjustment structure; a lifting rod is installed at the bottom of the platform surface, and the lifting rod is connected to the base through a lifting structure, and the grouting pump is installed on the base.

8. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 1, characterized in that: The pitch adjustment structure includes a telescopic cylinder, the bottom of which is rotatably connected to the rear plate, and the top of which is rotatably connected to the bottom of the touch control screen. The lifting structure includes a lifting sleeve rod, a lifting rod inserted into the lifting sleeve rod and slidably connected to the lifting sleeve rod, a lifting ring slidably sleeved on the lifting sleeve rod, the lifting ring being connected to a connecting block via a connecting rod, the connecting block being disposed on the lifting rod, and the lifting sleeve rod having an elongated opening for the connecting block to slide through, the connecting block being slidably connected to the elongated opening; a connecting plate is connected between adjacent lifting rings, and a telescopic cylinder two is disposed at the top of the base, the telescopic rod of the telescopic cylinder two being connected to the bottom end of the connecting plate; The movable structure includes two omnidirectional wheels and two fixed wheels, both of which are located at the bottom of the base.

9. The intelligent grouting flow control device for repairing asphalt pavement cracks according to claim 4, characterized in that: One end of the bidirectional connector is provided with a threaded tube, the top end of which is provided with a limit piece. The threaded tube has a compression opening, and a threaded sleeve is threadedly connected to the threaded tube. The threaded tube is locked to the connecting tube 2 through the threaded sleeve. The other end of the bidirectional connector is provided with a threaded tube 2, the top end of which is provided with a thread, and the threaded tube 2 is threadedly connected to the top end of the grouting port.

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