Grouting device and grouting method for roadbed reinforcement

Abstract

The invention relates to the technical field of road construction, in particular to a grouting device for roadbed reinforcement and a grouting method.The grouting device comprises a walking vehicle, and a control mechanism is arranged on the walking vehicle; the roll-over stand is movably arranged at the tail end of the walking vehicle, and when the walking vehicle works, the roll-over stand is vertically erected; the grouting pipe is movably arranged on the overturning frame, the top end of the grouting pipe is in transmission connection with a driving assembly movably arranged on the overturning frame, and the bottom end of the grouting pipe penetrates through a cleaning mechanism arranged at the bottom end of the overturning frame and then is inserted into the ground; the drill bit is arranged at the bottom end of the grouting pipe and communicates with an inner cavity of the grouting pipe, and a stirring assembly is arranged between the drill bit and the grouting pipe. And a plurality of ultrasonic auxiliary assemblies for assisting grouting are arranged in the drill bit. The method is flexible to operate and convenient to use, the infiltration capacity and infiltration speed of the slurry in the roadbed can be effectively increased, meanwhile, the porosity of the roadbed is increased, the infiltration time of the slurry in the roadbed is shortened, the reinforcement effect of the roadbed is improved, and meanwhile, the service life of equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of road construction, in particular to a grouting device for subgrade reinforcement and a grouting method. BACKGROUND

[0002] The subgrade is the basis of the road structure, directly bearing the vehicle load and the action of the natural environment, and the core role of the subgrade reinforcement is to improve the engineering properties of the subgrade soil through technical means to ensure the stability, bearing capacity and durability of the subgrade. In the existing subgrade reinforcement technology, grouting reinforcement is widely used because of its simple construction and remarkable reinforcement effect.

[0003] However, the existing grouting equipment mainly relies on the grouting pipe to press the mixed grouting slurry into the ground, and then relies on the natural flow of the slurry to penetrate the cracks of the subgrade. The penetration capacity is poor, the slurry is not evenly distributed, the penetration time is long, the penetration depth is insufficient, and the reinforcement degree of the subgrade does not meet the needs of road construction. At the same time, the existing grouting pipe lacks a cleaning device for the soil, so that the outer wall of the grouting pipe is consolidated with soil blocks, affecting the subsequent use.

[0004] Therefore, the present application designs a grouting device for subgrade reinforcement and a grouting method to solve the above technical problems. SUMMARY

[0005] The purpose of the present application is to provide a grouting device for subgrade reinforcement and a grouting method to solve the problems existing in the prior art.

[0006] To achieve the above-mentioned purpose, the present application provides the following scheme: the present application provides a grouting device for subgrade reinforcement, the tail end of the walking vehicle, when the walking vehicle works, the turnover frame is vertically erected;

[0007] The grouting pipe is movably arranged on the turnover frame, the top end of the grouting pipe is in transmission connection with the driving assembly movably arranged on the turnover frame, and the bottom end of the grouting pipe is inserted into the ground after passing through the cleaning mechanism arranged at the bottom end of the turnover frame;

[0008] The drill bit is arranged at the bottom end of the grouting pipe and communicates with the inner cavity of the grouting pipe, and the drill bit and the grouting pipe are provided with a stirring assembly; the drill bit is provided with a plurality of ultrasonic auxiliary assemblies for assisting grouting.

[0009] Preferably, the ultrasonic auxiliary assembly comprises an auxiliary hole opened in the outer wall of the drill bit, an ultrasonic wave generator is embedded and mounted in the auxiliary hole, and the ultrasonic wave generator is in contact with the subgrade outside through an ultrasonic transmission module arranged at the inlet of the auxiliary hole.

[0010] Preferably, the ultrasonic transmission module comprises a contact head telescopically arranged at the auxiliary hole opening, the contact head is in contact with the roadbed when the contact head is extended out of the auxiliary hole; the contact head is connected with the ultrasonic generator through a telescopic rod with telescopic function, and the ultrasonic energy of the ultrasonic generator is transmitted to the contact head.

[0011] Preferably, the ultrasonic transmission module further comprises a fixing ring, the outer wall of the fixed section of the telescopic rod is fixed with the inner ring of the fixing ring, the movable section of the telescopic rod is arranged in a gap with the inner ring of the fixing ring, and a plurality of first springs are arranged between the end face of the fixing ring and the contact head.

[0012] Preferably, the cleaning mechanism comprises a cleaning frame arranged at the bottom end of the turnover frame, a plurality of cleaning assemblies are telescopically arranged in the cleaning frame, the cleaning assemblies are arranged in a ring shape and surround the outer wall of the grouting pipe, and the free end of the cleaning assembly is in movable contact with the outer wall of the grouting pipe.

[0013] Preferably, the cleaning assembly comprises an elastic module arranged on the cleaning frame, a cleaning block is movably arranged on the elastic module, the cleaning block is extended out of the cleaning frame and in sliding contact with the outer wall of the grouting pipe, and the outer wall of the grouting pipe is cleaned by cleaning teeth arranged on the end face of the cleaning block.

[0014] Preferably, the elastic module comprises a clearance cavity opened in the cleaning frame, a counterforce plate is fixedly connected in the clearance cavity, a plurality of telescopic elastic rods are arranged at one end of the counterforce plate facing the cleaning block, the free end of the elastic rod is fixedly connected with a sliding block slidingly connected in the clearance cavity, and the cleaning block is fixedly connected on the sliding block.

[0015] Preferably, the stirring assembly comprises a mounting frame arranged at the bottom end of the inner cavity of the grouting pipe, a rotating impeller is rotatably connected in the mounting frame, the bottom end of the rotating impeller is in transmission connection with a stirring shaft rotatably connected in the inner cavity of the drill bit, the grout passes through the mounting frame and drives the stirring shaft to rotate through the rotating impeller, and the grout is stirred through the stirring rods arranged on the outer wall of the stirring shaft.

[0016] Preferably, the driving assembly comprises a driving frame longitudinally sliding on the turnover frame, a driving motor is arranged on the driving frame, and the output end of the driving motor is downwardly and in transmission connection with the top end of the grouting pipe.

[0017] The application further discloses a grouting method based on the grouting device for roadbed reinforcement.

[0018] The walking vehicle is pulled to reach the position of the roadbed needing reinforcement, and then the turnover frame is erected.

[0019] Prepare the slurry for reinforcement and connect the container storing the slurry with the grouting pipe;

[0020] The driving assembly is started to drive the grouting pipe and the drill bit to rotate and go down to drill into the roadbed;

[0021] The slurry in the container is sprayed out of the drill bit into the roadbed at a set pressure and speed and penetrates along the cracks of the roadbed;

[0022] The ultrasonic wave emitted by the ultrasonic auxiliary assembly is transmitted to the roadbed and the slurry to enhance the reinforcement effect of the roadbed;

[0023] The drill bit and the grouting pipe are pulled out of the roadbed, and then the walking vehicle is pulled to the next position to be reinforced to reinforce the roadbed again.

[0024] Compared with the prior art, the grouting device for roadbed reinforcement has the following advantages and technical effects: the walking vehicle is pulled forward by a vehicle and is equipped with a control mechanism for controlling the grouting process, so that the grouting device can be flexibly moved to the position of the roadbed to be reinforced and the grouting process is accurately controlled by the control mechanism, thereby improving the construction efficiency and reinforcement accuracy; the turnover frame is movably arranged at the tail end of the walking vehicle and is vertically erected during work to enable the grouting pipe to be stably and vertically inserted into the ground, thereby ensuring the accuracy of grouting; when normal transportation or storage is performed, the turnover frame is laid down on the walking vehicle to reduce the height and facilitate transfer; the grouting pipe is movably arranged on the turnover frame, the driving assembly drives the grouting pipe to rotate, and the flexible lifting and rotation of the grouting pipe are realized to perform grouting reinforcement on the target depth of the roadbed; the bottom end of the grouting pipe is inserted into the ground after passing through the cleaning mechanism arranged at the bottom end of the turnover frame, the soil blocks on the outer wall of the grouting pipe are effectively removed during lifting of the grouting pipe, the problems of blockage and influence on subsequent use are avoided, and the reliability and service life of the grouting device are improved; the drill bit is arranged at the bottom end of the grouting pipe and communicates with the inner cavity of the grouting pipe, the drilling capacity of the grouting pipe is increased, and the drill bit can be used for drilling and grouting on different forms of roadbeds; the drill bit is provided with a plurality of ultrasonic auxiliary components for assisting grouting, the energy transmission of ultrasonic waves is utilized to effectively improve the fluidity and permeability of the slurry, the slurry can be more uniformly distributed in the cracks of the roadbed, and the reinforcement effect is enhanced; meanwhile, the ultrasonic wave is transmitted to the roadbed to make the roadbed vibrate slightly, break the particle structure in the soil, and increase the porosity of the soil, thereby shortening the penetration time of the slurry and increasing the penetration depth; the stirring assembly is arranged between the grouting pipe and the drill bit, the stirring assembly is driven to work when the slurry flows, the slurry entering the drill bit is stirred, the slurry is more uniform, the stratification during transportation is avoided, and the grouting effect is improved.

[0025] This invention is flexible in operation and easy to use. It can effectively increase the penetration capacity and penetration rate of grout in the subgrade, while increasing the porosity of the subgrade, shortening the penetration time of grout in the subgrade, improving the reinforcement effect of the subgrade, and extending the service life of the equipment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0027] Figure 1 This is an axial view of the grouting device for roadbed reinforcement according to the present invention;

[0028] Figure 2 This is a front view of the grouting device for roadbed reinforcement according to the present invention;

[0029] Figure 3 For the present invention Figure 1 A magnified view of part A in the image;

[0030] Figure 4 This is a side view of the cleaning mechanism of the present invention;

[0031] Figure 5 For the present invention Figure 4 A magnified view of part B in the image;

[0032] Figure 6 This is a schematic diagram of the ultrasonic auxiliary component structure of the present invention;

[0033] Figure 7 This is an axial view of the drill bit of the present invention;

[0034] Figure 8 This is a top view of the cleaning mechanism of the present invention;

[0035] In the diagram: 1. Traveling vehicle; 2. Tilting frame; 3. Grouting pipe; 4. Drill bit; 11. Track; 12. Storage bin; 13. Control mechanism; 21. Adjustment module; 22. Cleaning frame; 23. Cleaning block; 24. Cleaning tooth; 25. Clearance cavity; 26. Reaction plate; 27. Elastic rod; 28. Second spring; 29. ​​Sliding block; 210. Top frame; 211. Base frame; 212. Positioning cone; 31. Drive frame; 32. Drive motor; 33. Mounting frame; 34. Rotating impeller; 35. Impeller shaft; 36. Agitator shaft; 37. Agitator rod; 41. Cutting groove; 42. Auxiliary hole; 43. Ultrasonic generator; 44. Contact head; 45. Telescopic rod; 46. Fixing ring; 47. First spring; 48. Grouting hole; 49. One-way valve. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0038] Referring to Figures 1 to 8 The embodiment provides a grouting device for roadbed reinforcement, which comprises:

[0039] A walking vehicle 1 advances by being pulled by a vehicle, and a control mechanism 13 for controlling a grouting process is arranged on the walking vehicle 1.

[0040] A turnover frame 2 is movably arranged at the tail end of the walking vehicle 1, and the turnover frame 2 is vertically erected when the walking vehicle 1 works.

[0041] A grouting pipe 3 is movably arranged on the turnover frame 2, the top end of the grouting pipe 3 is in transmission connection with a driving assembly movably arranged on the turnover frame 2, and the bottom end of the grouting pipe 3 is inserted into the ground after passing through a cleaning mechanism arranged at the bottom end of the turnover frame 2.

[0042] A drill bit 4 is arranged at the bottom end of the grouting pipe 3 and communicates with the inner cavity of the grouting pipe 3, and a stirring assembly is arranged between the drill bit 4 and the grouting pipe 3; a plurality of ultrasonic auxiliary assemblies for assisting grouting are arranged in the drill bit 4.

[0043] The application discloses a grouting device for roadbed reinforcement, wherein a walking vehicle 1 advances by vehicle traction and is equipped with a control mechanism 13 for controlling the grouting process, so that the grouting device can be flexibly moved to a position of a roadbed needing reinforcement and the grouting process is accurately controlled by the control mechanism 13, thereby improving construction efficiency and reinforcement accuracy; a turnover frame 2 is movably arranged at the tail end of the walking vehicle 1 and vertically stands up during work, so that a grouting pipe 3 can be stably and vertically inserted into the ground, thereby ensuring the accuracy of grouting; when normal transportation or storage is needed, the turnover frame 2 is laid on the walking vehicle 1, so that the height is reduced and the turnover frame 2 is convenient to transfer; the grouting pipe 3 is movably arranged on the turnover frame 2, a driving assembly drives the grouting pipe 3 to rotate, so that the grouting pipe 3 can be flexibly lifted and rotated, and the target depth of the roadbed can be grouted and reinforced; the bottom end of the grouting pipe 3 is inserted into the ground through a cleaning mechanism arranged at the bottom end of the turnover frame 2, so that the soil blocks on the outer wall of the grouting pipe 3 are effectively removed when the grouting pipe 3 is lifted, thereby avoiding the problems of blockage and influence on subsequent use, improving the reliability and service life of the grouting device; a drill bit 4 is arranged at the bottom end of the grouting pipe 3 and communicates with the inner cavity of the grouting pipe 3, so that the drilling capacity of the grouting pipe 3 is improved, and the grouting pipe 3 can be used for drilling and grouting on roadbeds of different forms; a plurality of ultrasonic auxiliary components for assisting grouting are arranged in the drill bit 4, the flowability and permeability of the slurry are effectively improved by using the energy transmission of ultrasonic waves, so that the slurry can be more uniformly distributed in the fissures of the roadbed, and the reinforcement effect is enhanced; meanwhile, the ultrasonic waves are transmitted to the roadbed, so that the roadbed is slightly vibrated, the particle structure in the soil body is broken, and the porosity of the soil body is increased, thereby shortening the penetration time of the slurry and increasing the penetration depth; a stirring assembly is arranged between the grouting pipe 3 and the drill bit 4, and when the slurry flows, the stirring assembly is driven to work, so that the slurry entering the drill bit 4 is stirred, the slurry is more uniform, the stratification in the conveying process is avoided, and the grouting effect is improved. The application has the advantages of flexible operation, convenient use, effectively increased penetration capacity and speed of the slurry in the roadbed, increased porosity of the roadbed, shortened penetration time of the slurry in the roadbed, improved reinforcement effect of the roadbed and prolonged service life of the equipment.

[0044] In an embodiment of the application, the walking part of the walking vehicle 1 adopts a track 11, so that the pressure of the walking vehicle 1 on the roadbed is reduced, the damage to the roadbed is reduced, and the walking ability of the walking vehicle 1 on the rugged roadbed is improved.

[0045] In an embodiment of the application, a storage bin 12 is arranged on the walking vehicle 1, so that tools can be conveniently stored and carried.

[0046] In an embodiment of the application, the turnover of the turnover frame 2 is realized by a regulating module 21, the control mechanism 13 inputs a control instruction to the regulating module 21, and the regulating module 21 controls the vertical standing and flat laying of the turnover frame 2.

[0047] In one embodiment of the present application, the adjusting module 21 is composed of several hydraulic rods, whose arrangement and control principle are the prior art in the field, which will not be described here.

[0048] Further optimization scheme, the ultrasonic auxiliary assembly includes auxiliary hole 42 set in the outer wall of the drill bit 4, the auxiliary hole 42 embedded installation has ultrasonic generator 43, ultrasonic generator 43 through the ultrasonic transmission module set in the auxiliary hole 42 import place contact with the roadbed. Ultrasonic generator 43 is installed in the auxiliary hole 42, when carrying out grouting work, ultrasonic generator 43 generates ultrasonic wave, which is transmitted to the roadbed and slurry through the ultrasonic transmission module; make ultrasonic energy and slurry interact, improve the permeability and distribution uniformity of slurry, accelerate the slurry flow to the surrounding and combine with the roadbed, realize the reinforcement of the roadbed; and the vibration of ultrasonic wave can also break the particle structure in the soil, increase the porosity of soil, so that the slurry flow; and, ultrasonic wave can also promote the evaporation of water in the slurry and solidification reaction, accelerate the solidification process of the slurry.

[0049] Further optimization scheme, the ultrasonic transmission module includes contact head 44 set in the opening of the auxiliary hole 42, the contact head 44 is in contact with the roadbed when it is stretched out of the auxiliary hole 42; the contact head 44 is connected with the ultrasonic generator 43 through the telescopic rod 45 with telescopic function, which transmits the ultrasonic energy of the ultrasonic generator 43 to the contact head 44; the ultrasonic transmission module further includes a fixed ring 46, the outer wall of the fixed segment of the telescopic rod 45 is fixed with the inner ring of the fixed ring 46, the movable segment of the telescopic rod 45 is arranged in the gap of the inner ring of the fixed ring 46, and a plurality of first springs 47 are arranged between the end face of the fixed ring 46 and the contact head 44. The fixed ring 46 fixes the telescopic rod 45 in the auxiliary hole 42, and also does not affect the telescopic movement of the telescopic rod 45; when the ultrasonic wave of the ultrasonic generator 43 makes the telescopic rod 45 vibrate, when it is stretched, it pushes the contact head 44 out of the auxiliary hole 42 and contacts with the roadbed, at the same time, the first spring 47 is stretched, the ultrasonic energy is transmitted to the roadbed and slurry, which ensures that the ultrasonic energy can be effectively transmitted to the roadbed and slurry, and improves the reinforcement effect; when the first spring 47 resets, it pulls the contact head 44 to move towards the auxiliary hole 42, at the same time, it can make the contact head 44 shrink in the auxiliary hole 42 when drilling, which avoids affecting the drilling, improves the stability and durability of the ultrasonic transmission module, and ensures the effective transmission of ultrasonic energy.

[0050] Further optimization scheme, the cleaning mechanism comprises a cleaning frame 22 arranged at the bottom end of the turnover frame 2, a plurality of cleaning assemblies are arranged in the cleaning frame 22 in an extendable manner, the plurality of cleaning assemblies are arranged in a ring shape and surround the outer wall of the grouting pipe 3, and the free end of the cleaning assembly is in movable contact with the outer wall of the grouting pipe 3. The plurality of cleaning assemblies are arranged in a ring shape around the outer wall of the grouting pipe 3 and in contact with the outer wall of the grouting pipe 3. When the grouting pipe 3 rotates and lifts, the cleaning assembly cleans the outer wall of the grouting pipe 3, removes the grout and roadbed material adhered to the surface, reduces the problem of soil blockage on the outer wall of the grouting pipe 3, and ensures smooth use of the grouting pipe 3 and subsequent reinforcement effect.

[0051] In an embodiment of the present application, the cleaning frame 22 comprises a top frame 210 and a bottom frame 211 arranged in correspondence with each other, and the cleaning assemblies on the top frame 210 and the bottom frame 211 respectively surround the grouting pipe 3, forming two cleaning processes from top to bottom, and improving the cleaning effect.

[0052] Further optimization scheme, the cleaning assembly comprises an elastic module arranged on the cleaning frame 22, and a cleaning block 23 movably arranged on the elastic module, the cleaning block 23 extends out of the cleaning frame 22 and is in sliding contact with the outer wall of the grouting pipe 3, and the outer wall of the grouting pipe 3 is cleaned by cleaning teeth 24 arranged on the end face of the cleaning block 23. The elastic module provides elastic force to push the cleaning block to elastically extend and retract, so that the cleaning block can be in close contact with the outer wall of the grouting pipe 3, and the outer wall of the grouting pipe 3 is cleaned by the cleaning teeth 24, thereby improving the cleaning effect and stability of the cleaning assembly and ensuring smooth use of the grouting pipe 3.

[0053] Further optimization scheme, the elastic module comprises a clearance cavity 25 opened in the cleaning frame 22, a counterforce plate 26 is fixedly connected in the clearance cavity 25, a plurality of elastic rods 27 are arranged on one end of the counterforce plate 26 in an extendable manner, the free end of the elastic rod 27 is fixedly connected with a sliding block 29 slidingly connected in the clearance cavity 25, and the cleaning block 23 is fixedly connected on the sliding block 29. The clearance cavity 25 provides a space for the elastic module to extend and retract, the counterforce plate 26 is fixed in the clearance cavity 25 and serves as a counterforce basis for the elastic module, the elastic rod 27 extends and retracts under the action of the counterforce plate 26, drives the sliding block 29 and the cleaning block 23 to work, improves the cleaning effect, avoids damage to the grouting pipe 3, improves the flexibility and durability of the elastic module, and ensures stable work of the cleaning assembly.

[0054] In an embodiment of the present application, a second spring 28 is arranged around the elastic rod 27, the second spring 28 is supported between the counterforce plate 26 and the sliding block 29, and assists the sliding block 29 to extend and retract.

[0055] Further optimization scheme, the stirring assembly includes the mounting frame 33 arranged at the bottom end of the inner cavity of the grouting pipe 3, the rotating impeller 34 is rotatably connected in the mounting frame 33, the bottom end of the rotating impeller 34 is in transmission connection with the stirring shaft 36 rotatably connected in the inner cavity of the drill bit 4, the slurry is driven to rotate the stirring shaft 36 by the rotating impeller 34 when passing through the mounting frame 33, and the slurry is stirred by the stirring rod 37 arranged on the outer wall of the stirring shaft 36. The mounting frame 33 is provided in a hollow shape and is only used for mounting the rotating impeller 34, and will not affect the passing of the slurry; the rotating impeller 34 is installed in the mounting frame 33 through the impeller shaft 35, when the slurry passes through the mounting frame 33, the rotating impeller 34 is pushed to rotate, the stirring shaft 36 is rotated, and then the stirring rod 37 stirs the slurry in the inner cavity of the drill bit 4, the uniformity and flowability of the slurry are improved, and the effect of roadbed reinforcement is enhanced.

[0056] In an embodiment of the present application, the outer wall of the drill bit 4 is provided with a plurality of arc-shaped cutting grooves 41 to assist the cutting of the drill bit 4 and improve the cutting capacity.

[0057] In an embodiment of the present application, a plurality of grouting holes 48 are arranged in the cutting groove 41, the slurry in the drill bit 4 is sprayed out of the grouting hole 48, and then the grouting is realized.

[0058] In an embodiment of the present application, a one-way valve 49 is arranged in the grouting hole 48, so that the slurry can only be discharged from the drill bit 4, avoiding backflow; at the same time, the one-way valve 49 can also ensure that the drill bit 4 can be opened only after the pressure in the inner cavity of the drill bit 4 meets the standard, avoiding slurry loss.

[0059] Further optimization scheme, the driving assembly includes the driving frame 31 longitudinally sliding on the turnover frame 2, the driving motor 32 is arranged on the driving frame 31, and the output end of the driving motor 32 is downwardly and in transmission connection with the top end of the grouting pipe 3. After the driving motor 32 is started, the grouting pipe 3 and the drill bit 4 are driven to rotate and lift, a stable power source and transmission mode are provided, and the normal work of the grouting pipe 3 and the drill bit 4 is ensured.

[0060] The present application also discloses a grouting method based on the grouting device for roadbed reinforcement, comprising the following steps:

[0061] The walking vehicle 1 reaches the position of the roadbed to be reinforced, and then the turnover frame 2 is erected; the traction structure of the walking vehicle 1 is connected with the traction vehicle, the whole device is pulled to the area to be reinforced, the position of the vehicle body is fixed by the braking device of the walking vehicle 1, and the relative position of the device and the point to be reinforced is accurate. Then, the turnover frame 2 originally folded or laid is erected by the adjustment module 21 of the turnover frame 2, at this time, the bottom end of the turnover frame 2 is attached to the ground, and the overall stability is enhanced by the bottom positioning cone 212 to provide rigid support for the positioning of the grouting pipe 3. At the same time, the operation control mechanism 13 completes system self-checking, including state detection of the driving assembly, the ultrasonic auxiliary assembly and the grouting pipe 3, to ensure that each component is in normal operation, reduce the probability of interruption during operation, and improve the construction reliability.

[0062] The slurry for reinforcement is prepared, and the container storing the slurry is connected with the grouting pipe 3; the reinforcement slurry is configured according to the roadbed geological conditions, and the slurry is stored in the stirring tank. The slurry pipeline is connected with the top end interface of the grouting pipe 3 through the delivery pump, and the pipeline valve is opened to make the slurry initially enter the inner cavity of the grouting pipe 3. At this time, the mounting frame 33 at the bottom end of the inner cavity of the grouting pipe 3 rotates the impeller 34 triggered by the pre-rotation of the grouting pipe 3, the impeller rotates under the action of the flow impact force of the slurry, and then drives the stirring shaft 36 and the stirring rod 37 in the inner cavity of the drill bit 4 to rotate synchronously, so as to dynamically stir the slurry before entering the drill bit 4, avoiding the solidification and blockage problem caused by the static slurry of the traditional equipment. The control mechanism 13 monitors the slurry flow in real time to ensure that the pipeline is unobstructed.

[0063] The driving assembly is started to drive the grouting pipe 3 and the drill bit 4 to rotate and downward, and drill into the roadbed; the drilling depth and the rotating speed are set by the control mechanism 13, the driving assembly is started, the driving frame 31 slowly descends along the longitudinal slide rail of the turnover frame 2, and the driving motor 32 outputs the torque to drive the grouting pipe 3 to rotate, and the drill bit 4 at the bottom end of the grouting pipe 3 rotates synchronously. The drill bit 4 cuts the roadbed soil in the rotating process, and the soil near the drill bit 4 is loosened during drilling, which facilitates the subsequent penetration of the slurry. The control mechanism 13 feeds back the drilling depth in real time through the displacement sensor, and automatically stops descending when the preset depth is reached, and the positioning is completed.

[0064] The grout in the container is injected into the roadbed from the drill bit 4 at a set pressure and speed, and permeates along the cracks in the roadbed. The control mechanism 13 starts the grouting pump, which delivers the grout to the drill bit 4 through the inner cavity of the grouting pipe 3 at a preset pressure and flow rate. The grout is then ejected from the grouting port of the drill bit 4 and permeates and diffuses along the cracks in the roadbed. Simultaneously, the ultrasonic auxiliary component is activated. The ultrasonic waves generated by the ultrasonic generator 43 extend from the auxiliary hole 42 under the elastic force of the telescopic rod 45 and the first spring 47, making close contact with the surrounding roadbed soil and transferring ultrasonic energy to the roadbed and the grout. The ultrasonic waves disrupt the surface tension of the grout through cavitation, promoting its penetration into the micro-cracks; at the same time, they vibrate the soil particles, reducing the flow resistance of the grout and allowing the grout to bond more fully with the soil. The control mechanism 13 monitors the grouting pressure and ultrasonic power in real time and dynamically adjusts the parameters to match the roadbed permeability.

[0065] The ultrasonic waves emitted by the ultrasonic auxiliary component are transmitted to the roadbed and grout, enhancing the roadbed reinforcement effect. After grouting is completed, the control mechanism 13 shuts off the grouting pump and drives the component to run in reverse, slowly pulling the grouting pipe 3 and drill bit 4 out of the roadbed. During the extraction process, the elastic rod 27 of the elastic module inside the cleaning frame 22 pushes the sliding block 29 and the cleaning block 23 closer to the outer wall of the grouting pipe 3. The cleaning teeth 24 on the end face of the cleaning block 23 slide into contact with the outer wall of the grouting pipe 3, scraping off the attached mud and grout residue. The telescopic characteristics of the elastic rod 27 can adapt to the slight shaking when the grouting pipe 3 is extracted, ensuring thorough cleaning, preventing residue from solidifying and clogging the pipeline or affecting the accuracy of the next grouting, extending the service life of the equipment, and reducing manual cleaning costs.

[0066] The drill bit 4 and grouting pipe 3 are removed from the roadbed, and then the traveling vehicle 1 is towed to the next location requiring reinforcement, where the roadbed is reinforced again. After the equipment is removed, the tilting frame 2 is folded back to its original position using hydraulic components, the braking device of the traveling vehicle 1 is released, and the equipment is towed to the next location to be reinforced by a towing vehicle. The grouting reinforcement steps are repeated to achieve continuous grouting operations. The control mechanism 13 automatically records the grouting parameters at the current location, providing data reference for subsequent operations and improving the level of construction standardization.

[0067] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0068] The above described embodiments are only to illustrate the preferred modes of the present application, and are not intended to limit the scope of the present application. Any modification and improvement made by those skilled in the art to the technical solutions of the present application without departing from the design spirit of the present application shall fall within the protection scope of the present application.

Claims

1. A grouting device for embankment reinforcement, characterized by, Include: Walking car (1), the walking car (1) is advanced by vehicle traction, the control mechanism (13) of control grouting process is provided on the walking car (1); Turnover frame (2), the turnover frame (2) is movably arranged in the tail end of the walking car (1), when the walking car (1) works, the turnover frame (2) is vertically erected; Grouting pipe (3), the grouting pipe (3) is movably arranged on the turnover frame (2), the top end of the grouting pipe (3) is in transmission connection with the driving assembly movably arranged on the turnover frame (2), the bottom end of the grouting pipe (3) is inserted into the ground through the cleaning mechanism arranged in the bottom end of the turnover frame (2); Drill bit (4), the drill bit (4) is arranged in the bottom end of the grouting pipe (3) and is in communication with the inner cavity of the grouting pipe (3), the drill bit (4) is provided with a stirring assembly between the grouting pipe (3);The drill bit (4) is provided with a plurality of ultrasonic auxiliary assemblies for assisting grouting.

2. The grouting device for embankment reinforcement according to claim 1, characterized by: The ultrasonic auxiliary assembly includes an auxiliary hole (42) opened in the outer wall of the drill bit (4), the ultrasonic generator (43) is embedded in the auxiliary hole (42), and the ultrasonic generator (43) is in contact with the roadbed through the ultrasonic transmission module arranged at the inlet of the auxiliary hole (42).

3. The grouting device for embankment reinforcement according to claim 2, characterized in that: The ultrasonic transmission module includes a contact head (44) arranged in the opening of the auxiliary hole (42), the contact head (44) is in contact with the roadbed when it is stretched out of the auxiliary hole (42);The contact head (44) is connected with the ultrasonic generator (43) through the telescopic rod (45) with telescopic function, and the ultrasonic energy of the ultrasonic generator (43) is transmitted to the contact head (44).

4. The grouting device for embankment reinforcement according to claim 3, characterized by: The ultrasonic transmission module further includes a fixed ring (46), the outer wall of the fixed segment of the telescopic rod (45) is fixed with the inner ring of the fixed ring (46), the movable segment of the telescopic rod (45) is arranged in the gap of the inner ring of the fixed ring (46), and a plurality of first springs (47) are arranged between the end face of the fixed ring (46) and the contact head (44).

5. The grouting device for embankment reinforcement according to claim 1, characterized by: The cleaning mechanism includes a cleaning frame (22) arranged in the bottom end of the turnover frame (2), a plurality of cleaning assemblies are telescopically arranged in the cleaning frame (22), a plurality of the cleaning assemblies are arranged in a ring shape and surround the outer wall of the grouting pipe (3), and the free end of the cleaning assembly is in movable contact with the outer wall of the grouting pipe (3).

6. The grouting device for embankment reinforcement according to claim 5, characterized by: The cleaning assembly includes an elastic module arranged on the cleaning frame (22), a cleaning block (23) is movably arranged on the elastic module, the cleaning block (23) is stretched out of the cleaning frame (22) and in sliding contact with the outer wall of the grouting pipe (3), and the outer wall of the grouting pipe (3) is cleaned by the cleaning teeth (24) arranged on the end face of the cleaning block (23).

7. The grouting device for embankment reinforcement according to claim 6, characterized by: The elastic module comprises a clearance cavity (25) formed in the cleaning frame (22), a counterforce plate (26) is fixedly connected in the clearance cavity (25), a plurality of elastic rods (27) are arranged on one end of the counterforce plate (26) and face the cleaning block (23), the free ends of the elastic rods (27) are fixedly connected with a sliding block (29) which is slidingly connected in the clearance cavity (25), and the cleaning block (23) is fixedly connected on the sliding block (29).

8. The grouting device for embankment reinforcement according to claim 1, characterized by: The stirring assembly comprises a mounting frame (33) arranged at the bottom end of the inner cavity of the grouting pipe (3), a rotating impeller (34) is rotatably connected in the mounting frame (33), the bottom end of the rotating impeller (34) is in transmission connection with a stirring shaft (36) which is rotatably connected in the inner cavity of the drill bit (4), when the slurry passes through the mounting frame (33), the stirring shaft (36) is driven to rotate by the rotating impeller (34), and the slurry is stirred by a stirring rod (37) arranged on the outer wall of the stirring shaft (36).

9. The grouting device for embankment reinforcement according to claim 1, characterized by: The driving assembly comprises a driving frame (31) which longitudinally slides on the turnover frame (2), a driving motor (32) is arranged on the driving frame (31), and the output end of the driving motor (32) is downwardly and in transmission connection with the top end of the grouting pipe (3).

10. A method of grouting for embankment reinforcement, based on the grouting device for embankment reinforcement according to any one of claims 1 to 9, characterized by, The method comprises the following steps: The walking vehicle (1) is pulled to the position where the subgrade needs to be reinforced, and then the turnover frame (2) is erected; The slurry for reinforcement is prepared, and the container storing the slurry is connected with the grouting pipe (3); The driving assembly is started, the grouting pipe (3) and the drill bit (4) are driven to rotate and downwardly drill into the subgrade; The slurry in the container is sprayed from the drill bit (4) to the subgrade at a set pressure and speed, and penetrates along the gap of the subgrade; The ultrasonic wave emitted by the ultrasonic auxiliary assembly is transmitted to the subgrade and the slurry, and the effect of reinforcing the subgrade is enhanced; The drill bit (4) and the grouting pipe (3) are separated from the subgrade, then the walking vehicle (1) is pulled to the next position which needs to be reinforced, and the subgrade is reinforced again.

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