Grouting reinforcement device for roadbed backfilling and construction method

Abstract

The invention relates to the technical field of roadbed backfill construction, in particular to a grouting reinforcement device for roadbed backfill and a construction method.The grouting reinforcement device for roadbed backfill comprises a transport cart, a stirring mechanism, a grouting mechanism, a drilling mechanism and a connecting mechanism are installed on the transport cart, and the stirring mechanism is connected with the grouting mechanism; the grouting mechanism is in transmission connection with the drilling mechanism through the connecting mechanism. The drilling and grouting device has the advantages that the drilling mechanism and the grouting mechanism are connected, so that the grouting mechanism performs automatic grouting after drilling is completed, the automation degree and the grouting efficiency are improved, and the operation steps of operators are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed backfill construction, and in particular to a grouting reinforcement device for roadbed backfill and a construction method. Background Art

[0002] As one of the most commonly used anti-seepage construction technologies in road construction, grouting technology has been widely used in the construction of road projects. Grouting is a method of injecting certain solidifying slurries into cracks or pores in the road foundation to improve its physical and mechanical properties. The purpose of grouting is to prevent seepage, stop leaks, reinforce and correct the deflection of buildings. The grouting mechanism includes filling grouting, penetration grouting, compaction grouting and splitting grouting. The grouting materials include granular slurry and chemical slurry. Granular slurry is mainly grouting material. Road construction grouting reinforcement device is one of the commonly used equipment in the road construction process. The grouting material enters the foundation grouting reinforcement device through a conveying pump and is then injected into the underground rock and soil through a borehole.

[0003] The grouting reinforcement devices in the prior art all drill holes first, and then move the filling device to the drill hole for filling. This method has a low degree of automation and requires operators to repeatedly move the drilling device and the filling device, resulting in low grouting efficiency. Summary of the invention

[0004] In order to improve the degree of automation of the device and the efficiency of grouting, the present application provides a grouting reinforcement device for roadbed backfilling and a construction method.

[0005] In the first aspect, the present application provides a grouting reinforcement device for roadbed backfill, which adopts the following technical solution: A grouting reinforcement device for roadbed backfill and a construction method include a transport vehicle, on which a stirring mechanism, a grouting mechanism, a drilling mechanism and a connecting mechanism are installed. The stirring mechanism is connected to the grouting mechanism, and the grouting mechanism is transmission-connected to the drilling mechanism through the connecting mechanism.

[0006] By adopting the above technical solution, when grouting and fixing the roadbed is carried out, the grouting material is first manually added to the stirring mechanism, and the stirring mechanism stirs the grouting material. At this time, the drilling mechanism drills holes at places on the road surface where grouting is required. After the drilling is completed, the drilling mechanism drives the grouting mechanism to the drilling position through the connecting mechanism. At this time, the grouting mechanism injects the stirred grouting material into the grouting hole to achieve grouting and fixing of the roadbed.

[0007] Optionally, the drilling mechanism includes a first mounting plate fixedly connected to the transport vehicle. One end of the first mounting plate away from the transport vehicle is fixedly connected to a second mounting plate. A first hydraulic cylinder is fixedly connected to the end face of the second mounting plate close to the transport vehicle. A connecting block is fixedly connected to the piston shaft of the first hydraulic cylinder. An installation groove is formed inside the connecting block. A first rotating shaft is rotatably connected to the connecting block. One end of the first rotating shaft is located in the installation groove, and the other end of the first rotating shaft is installed with a drill bit through a detachable component. A rotating component is arranged on the connecting block. The rotating component includes a second motor fixedly connected to the connecting block. A first driving gear is key-connected to the output shaft of the second motor. The first driving gear is located in the installation groove. A second driving gear is fixedly connected to one end of the first rotating shaft located in the installation groove. The second driving gear meshes with the first driving gear, and the diameter of the second driving gear is larger than that of the first driving gear.

[0008] By adopting the above technical solution, when drilling the roadbed, the second motor is started. The second motor drives the first driving gear to rotate. The first driving gear drives the second driving gear to rotate. The second driving gear drives the drill bit to rotate through the first rotating shaft. Because the diameter of the second driving gear is larger than that of the first driving gear, the torque obtained when the drill bit rotates is greater. At the same time, the first hydraulic cylinder is started. The first hydraulic cylinder drives the connecting block to move. The connecting block drives the drill bit to drill the roadbed through the first rotating shaft.

[0009] Optionally, the grouting mechanism includes a slide rail fixedly connected to the end face of the transport vehicle close to the second mounting plate. A first slider is slidably connected to the slide rail. A cylinder is fixedly connected to the first slider. A first connecting rod is fixedly connected to the piston shaft of the cylinder. A grouting pipe is fixedly connected to the first connecting rod. A slurry pumping pump is also fixedly connected to the end face of the transport vehicle close to the second mounting plate. The slurry pumping pump is connected to the mixing mechanism. A connecting hose is fixedly connected to the slurry pumping pump. One end of the connecting hose away from the slurry pumping pump is communicated with the grouting pipe.

[0010] By adopting the above technical solution, when grouting, the connecting mechanism drives the first slider to slide. The first slider drives the cylinder to move. The cylinder drives the first connecting rod to move. The first connecting rod drives the grouting pipe to move to the position where the roadbed needs to be grouted. At this time, the cylinder is started. The cylinder inserts the grouting pipe into the grouting hole drilled by the drill bit through the first connecting rod. The slurry pumping pump is started. The slurry pumping pump extracts the grouting material that has been mixed through the connecting hose into the grouting pipe and then injects it into the grouting hole through the grouting pipe.

[0011] Optionally, the connecting mechanism includes a second connecting rod fixedly connected to the connecting block. One end of the second connecting rod away from the connecting block is fixedly connected with a first transmission rack. A second rotating shaft is rotatably connected to the end face of the first mounting plate close to the drill bit. A first transmission gear is key-connected to the second rotating shaft. The first transmission gear meshes with the first transmission rack. A fixed block is fixedly connected to the end face of the transport vehicle close to the second mounting plate. A third rotating shaft is rotatably connected to the fixed block. A second transmission gear is key-connected to the third rotating shaft. A second transmission rack is fixedly connected to the first slider. The second transmission gear meshes with the second transmission rack. The connecting mechanism further includes a transmission component, and the transmission component includes a first pulley fixedly connected to the second rotating shaft. A second pulley is fixedly connected to the third rotating shaft. A belt is rotatably connected between the first pulley and the second pulley.

[0012] By adopting the above technical solution, after the drill bit finishes drilling, the first hydraulic cylinder contracts, thereby driving the movement of the connecting block. The connecting block drives the first transmission rack to move through the second connecting rod. The first transmission rack drives the first transmission gear to rotate. The first transmission gear drives the first pulley to rotate through the second rotating shaft. The first pulley drives the second pulley to rotate through the belt. The second pulley drives the second transmission gear to rotate through the third rotating shaft. The second transmission gear drives the second transmission rack to move. The second transmission rack drives the cylinder to move through the first slider. The cylinder drives the first connecting rod to move. The first connecting rod drives the injection pipe to move to the position where the roadbed needs grouting, thereby improving the automation degree and grouting efficiency of the device.

[0013] Optionally, a first chute is opened on the end face of the first rotating shaft away from the first hydraulic cylinder. A first limiting groove is opened on the side wall of the first chute. The detachable component includes a sliding rod slidably connected in the first chute and fixedly connected to the drill bit. A first limiting block is slidably connected in the first limiting groove and fixedly connected to the sliding rod. Fixed rings are fixedly connected to the side walls of the sliding rod and the first rotating shaft. Through holes are opened on the end faces of the two fixed rings close to each other. The detachable component further includes a fixing bolt that sequentially passes through the two through holes and is threadedly connected with a fixing nut.

[0014] By adopting the above technical solution, when installing the drill bit, manually insert the sliding rod into the first chute, and then manually pass the fixing bolt through the two through holes and thread it with the fixing nut. At the same time, the setting of the first limiting block makes it impossible for the sliding rod and the first rotating shaft to rotate relative to each other, thereby facilitating the replacement of the drill bit and improving the applicability of the grouting reinforcement device for roadbed backfilling.

[0015] Optionally, the grouting mechanism further includes a sealing assembly, which includes a sealing ring fixedly connected to the side wall of the filling pipe, and a rubber sealing ring fixedly connected to the end face of the sealing ring close to the roadbed.

[0016] By adopting the above technical solution, the sealing ring and the rubber sealing ring are arranged to seal the grouting hole, thereby reducing the probability that the slurry leaks from around the grouting hole, resulting in slurry loss and a decline in the reinforcement effect.

[0017] Optionally, the stirring mechanism includes a stirring tank fixedly connected to the end face of the transport vehicle away from the roadbed. One end of the stirring tank away from the transport vehicle is fixedly connected with a feed hopper and a first motor. The feed hopper is communicated with the inside of the stirring tank. A stirring shaft is fixedly connected to the output shaft of the first motor. Stirring blades are fixedly connected to the side wall of the stirring shaft. One end of the stirring tank close to the transport vehicle is fixedly connected with a discharge pipe, which is connected to the slurry pumping pump, and a discharge valve is fixedly connected to the side wall of the discharge pipe.

[0018] By adopting the above technical solution, when stirring the grouting material, first manually add the grouting material into the stirring tank from the feed hopper, and then start the first motor. The first motor drives the stirring shaft to rotate, the stirring shaft drives the stirring blades to rotate, and the stirring blades stir the grouting material, thereby making the mixing degree of the grouting material higher and achieving a better grouting effect.

[0019] Optionally, four through second chutes are opened on the end face of the transport vehicle close to the roadbed. A fixing mechanism is also installed on the transport vehicle. The fixing mechanism includes four second hydraulic cylinders, all of which are fixedly connected to the transport vehicle. Second sliders are slidably connected in the four second chutes respectively, and the four second sliders are fixedly connected to the piston shafts of the four second hydraulic cylinders respectively. One end of each of the four second sliders away from the second hydraulic cylinder is fixedly connected with a mounting block. A third chute is opened at one end of the mounting block away from the second slider. A second limiting groove is opened on the side wall of the third chute. A support block is slidably connected in the third chute. A second limiting block is slidably connected in the second limiting groove. The second limiting block is fixedly connected to the support block. A spring is fixedly connected to the end face of the second limiting block close to the second slider, and the other end of the spring away from the second limiting block is fixedly connected to the side wall of the second limiting groove.

[0020] By adopting the above technical solution, when the drill bit is aligned with the position on the roadbed where drilling is required, the second hydraulic cylinder is activated. The second hydraulic cylinder drives the second slider to slide, the second slider drives the mounting block to move, and the mounting block drives the support block to move and makes the support block contact the roadbed, thereby supporting the entire transport vehicle. This reduces the probability that the drilling position is offset due to the shaking of the transport vehicle caused by the rotation of the drill bit. At the same time, the setting of the spring also reduces the probability of the transport vehicle vibrating, making the drilling more stable.

[0021] Second, a grouting construction method for roadbed backfilling provided by the present application adopts the following technical solution: A grouting construction method for roadbed backfilling includes the following steps: Step 1: On-site investigation and design. Before grouting, conduct a detailed investigation and evaluation of the construction site to determine the bearing capacity and permeability of the foundation. Step 2: Preparation of grouting materials. According to the roadbed soil quality and design requirements, mix the grouting materials. Step 3: Drilling construction. According to the design requirements, arrange grouting holes on the roadbed through a drilling mechanism. Step 4: Grouting construction. Pour the grouting material into the mixing tank for stirring and mixing, and then transport it to the grouting holes through a slurry pump for grouting. Step 5: Quality inspection and evaluation. After grouting, inspect the grouting quality, evaluate whether the grouting effect meets the expected goal, and adjust the subsequent construction. Step 6: Subsequent construction. After the grouting effect meets the expectation, subsequent road surface construction can be carried out.

[0022] By adopting the above technical solution, the quality of grouting is inspected and evaluated, and timely adjustments are made. Thus, a suitable grouting design plan can be adjusted according to the specific situation of the roadbed, improving the overall grouting effect.

[0023] In summary, the present application includes the following beneficial technical effects: 1. Connect the drilling mechanism and the grouting mechanism, enabling automatic grouting by the grouting mechanism after drilling is completed, thereby improving the automation degree and grouting efficiency and reducing the operation steps of the operator. 2. When installing the drill bit, manually insert the sliding block into the first chute, and then manually pass the fixing bolt through the two through holes and thread it with the fixing nut. At the same time, the setting of the first limit block makes it impossible for the sliding rod and the first rotating shaft to rotate relative to each other, thereby facilitating the replacement of the drill bit and improving the applicability of the grouting reinforcement device for roadbed backfilling. 3. The setting of the sealing ring and the rubber sealing ring seals the grouting holes, thereby reducing the probability that the slurry leaks from around the grouting holes, resulting in slurry loss and a decrease in the reinforcement effect. 4. Detect and evaluate the quality of grouting, make timely adjustments, and then adjust a suitable grouting design plan according to the specific conditions of the roadbed, thereby improving the overall grouting effect. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the grouting reinforcement device for roadbed backfilling in the embodiment of the present application; Figure 2 It is a sectional view of the stirring mechanism in the embodiment of the present application; Figure 3 It is a schematic structural diagram of the drilling mechanism in the embodiment of the present application; Figure 4 It is a schematic structural diagram of the rotating assembly in the embodiment of the present application; Figure 5 It is a schematic structural diagram of the detachable assembly in the embodiment of the present application; Figure 6 It is a schematic structural diagram of the grouting mechanism in the embodiment of the present application; Figure 7 For the present application Figure 6 An enlarged view of part A; Figure 8 It is a schematic structural diagram of the connecting mechanism in the embodiment of the present application; Figure 9 For the present application Figure 8 An enlarged view of part B; Figure 10 It is a sectional view of the fixing mechanism in the embodiment of the present application.

[0025] Reference numerals: 1, transport vehicle; 11, second chute; 2, mixing mechanism; 21, mixing tank; 22, feed hopper; 23, first motor; 24, mixing shaft; 25, mixing blades; 26, discharge pipe; 27, discharge valve; 3, drilling mechanism; 31, first mounting plate; 32, second mounting plate; 33, first hydraulic cylinder; 34, connecting block; 341, mounting groove; 35, first rotating shaft; 351, first chute; 352, first limiting groove; 36, drill bit; 37, rotating assembly; 371, second motor; 372, first driving gear; 373, second driving gear; 38, detachable assembly; 381, sliding rod; 382, first limiting block; 383, fixing ring; 384, fixing bolt; 385, fixing nut; 386, penetration hole; 4, grouting mechanism; 41, slurry pump; 42, connecting hose; 43, slide rail; 44, first slider; 45, cylinder; 46, first connecting rod; 47, filling pipe; 48, sealing assembly; 481, sealing ring; 482, rubber sealing ring; 5, connecting mechanism; 511, second connecting rod; 512, first transmission rack; 513, third mounting plate; 514, second rotating shaft; 515, first transmission gear; 516, fixing block; 517, third rotating shaft; 518, second transmission gear; 519, second transmission rack; 52, transmission assembly; 521, first pulley; 522, second pulley; 523, belt; 6, fixing mechanism; 61, second hydraulic cylinder; 62, second slider; 63, mounting block; 631, third chute; 632, second limiting groove; 64, supporting block; 65, second limiting block; 66, spring. Detailed implementation manners

[0026] The following is a further detailed description of the present application in conjunction with the attached Figures 1 - 10 drawings.

[0027] An embodiment of the present application discloses a grouting reinforcement device for subgrade backfilling.

[0028] Referring to Figure 1 , the grouting reinforcement device for subgrade backfilling includes a transport vehicle 1, on which a mixing mechanism 2 for mixing grouting materials, a drilling mechanism 3 for drilling the subgrade, and a grouting mechanism 4 for grouting are installed. A connecting mechanism 5 connected to the grouting mechanism 4 is also installed on the drilling mechanism 3.

[0029] When grouting and fixing the subgrade, first manually add the grouting materials into the mixing mechanism 2, and the mixing mechanism 2 mixes the grouting materials. At this time, the drilling mechanism 3 drills the place on the road surface that needs to be grouted. After the drilling is completed, the drilling mechanism 3 drives the grouting mechanism 4 to the drilling position through the connecting mechanism 5. At this time, the grouting mechanism 4 injects the mixed grouting materials into the grouting holes to realize the grouting and fixing of the subgrade.

[0030] Reference Figure 2 , the stirring mechanism 2 includes a stirring tank 21. The stirring tank 21 is fixedly connected to the end face of the transport vehicle 1 away from the roadbed. A feed hopper 22 is fixedly connected to the end face of the stirring tank 21 away from the transport vehicle 1. The feed hopper 22 is communicated with the inside of the stirring tank 21. A first motor 23 is also fixedly connected to the end face of the stirring tank 21 away from the transport vehicle 1. A stirring shaft 24 is fixedly connected to the output shaft of the first motor 23. The stirring shaft 24 is rotatably connected in the stirring tank 21. A plurality of stirring blades 25 are fixedly connected to the side wall of the stirring shaft 24; a discharge pipe 26 is fixedly connected to the end face of the stirring tank 21 close to the transport vehicle 1. The discharge pipe 26 is communicated with the inside of the stirring tank 21. A discharge valve 27 is fixedly connected to the side wall of the discharge pipe 26.

[0031] When stirring the grouting material, first manually pour the grouting material into the stirring tank 21 from the feed hopper 22, and then start the first motor 23. The first motor 23 drives the stirring shaft 24 to rotate, the stirring shaft 24 drives the stirring blades 25 to rotate, and the stirring blades 25 stir the grouting material, so that the mixing degree of the grouting material is higher and the grouting effect is better.

[0032] Reference Figure 3 , the drilling mechanism 3 includes a first mounting plate 31. The first mounting plate 31 is fixedly connected to the end face of the transport vehicle 1 away from the roadbed. A second mounting plate 32 is fixedly connected to one end of the first mounting plate 31 away from the transport vehicle 1. The axis of the second mounting plate 32 is perpendicular to that of the first mounting plate 31. A first hydraulic cylinder 33 is fixedly connected to the end face of the second mounting plate 32 close to the transport vehicle 1. A connecting block 34 is fixedly connected to the piston shaft of the first hydraulic cylinder 33. One end of the connecting block 34 away from the first hydraulic cylinder 33 is rotatably connected to a first rotating shaft 35. A rotating assembly 37 is also installed on the connecting block 34. The rotating assembly 37 is connected to the first rotating shaft 35. A drill bit 36 is installed on the first rotating shaft 35 through a detachable assembly 38.

[0033] When drilling, the rotating assembly 37 drives the first rotating shaft 35 to rotate, the first rotating shaft 35 drives the drill bit 36 to rotate. At the same time, the first hydraulic cylinder 33 is started, the first hydraulic cylinder 33 drives the connecting block 34 to move, and the connecting block 34 drives the drill bit 36 to drill the roadbed through the first rotating shaft 35.

[0034] Reference Figure 4, an installation groove 341 is formed inside the connecting block 34. One end of the first rotating shaft 35 away from the drill bit 36 is located in the installation groove 341. The rotating assembly 37 includes a second motor 371. The second motor 371 is fixedly connected to the end face of the connecting block 34 away from the drill bit 36. A first driving gear 372 is key-connected to the output shaft of the second motor 371. The first driving gear 372 is located in the installation groove 341. One end of the first rotating shaft 35 located in the installation groove 341 is fixedly connected to a second driving gear 373. The second driving gear 373 meshes with the first driving gear 372, and the diameter of the second driving gear 373 is larger than that of the first driving gear 372.

[0035] When the drill bit 36 rotates, the second motor 371 is started. The second motor 371 drives the first driving gear 372 to rotate. The first driving gear 372 drives the second driving gear 373 to rotate. The second driving gear 373 drives the drill bit 36 to rotate through the first rotating shaft 35. At the same time, because the diameter of the second driving gear 373 is larger than that of the first driving gear 372, the torque obtained when the drill bit 36 rotates is larger.

[0036] Reference Figure 5 , a first sliding groove 351 is formed on the end face of the first rotating shaft 35 away from the first hydraulic cylinder 33. A first limiting groove 352 is formed on the side wall of the first sliding groove 351. The detachable assembly 38 includes a sliding rod 381. The sliding rod 381 is slidably connected in the first sliding groove 351 and is fixedly connected to the drill bit 36. A first limiting block 382 is slidably connected in the first limiting groove 352. The first limiting block 382 is fixedly connected to the sliding rod 381. Fixing rings 383 are fixedly connected to the side walls of the sliding rod 381 and the first rotating shaft 35. Through holes 386 are formed on the end faces of the two fixing rings 383 close to each other. The detachable assembly 38 further includes a fixing bolt 384. The fixing bolt 384 sequentially passes through the two through holes 386 and is threadedly connected with a fixing nut 385.

[0037] When installing the drill bit 36, manually insert the sliding rod 381 into the first sliding groove 351, and then manually pass the fixing bolt 384 through the two through holes 386 and thread it with the fixing nut 385. At the same time, the setting of the first limiting block 382 makes it impossible for the sliding rod 381 and the first rotating shaft 35 to rotate relative to each other, thus facilitating the replacement of the drill bit 36 and improving the applicability of the grouting reinforcement device for subgrade backfilling.

[0038] Reference Figure 6 and Figure 7, the grouting mechanism 4 includes a slide rail 43. The slide rail 43 is fixedly connected to the end face of the transport vehicle 1 close to the second mounting plate 32. A first slider 44 is slidably connected to the slide rail 43. The first slider 44 is connected to the connecting mechanism 5. A cylinder 45 is fixedly connected to the end face of the first slider 44 away from the slide rail 43. A first connecting rod 46 is fixedly connected to the piston shaft of the cylinder 45. A grouting pipe 47 is fixedly connected to the first connecting rod 46. A slurry pump 41 is also fixedly connected to the end face of the transport vehicle 1 close to the second mounting plate 32. The slurry pump 41 is communicated with the discharge pipe 26. One end of the slurry pump 41 away from the discharge pipe 26 is fixedly connected to a connecting hose 42. The end of the connecting hose 42 away from the slurry pump 41 is communicated with the grouting pipe 47. A sealing assembly 48 is arranged on the grouting pipe 47. The sealing assembly 48 includes a sealing ring 481. The sealing ring 481 is fixedly connected to the side wall of the grouting pipe 47. A rubber sealing ring 482 is fixedly connected to the end face of the sealing ring 481 close to the roadbed.

[0039] When grouting, the connecting mechanism 5 drives the first slider 44 to slide. The first slider 44 drives the cylinder 45 to move. The cylinder 45 drives the first connecting rod 46 to move. The first connecting rod 46 drives the grouting pipe 47 to move to the position where the roadbed needs to be grouted. At this time, the cylinder 45 is started. The cylinder 45 inserts the grouting pipe 47 into the grouting hole drilled by the drill bit 36 through the first connecting rod 46. Then the slurry pump 41 is started. The slurry pump 41 pumps the stirred grouting material through the connecting hose 42 into the grouting pipe 47 and then injects it into the grouting hole through the grouting pipe 47. The arrangement of the sealing ring 481 and the rubber sealing ring 482 seals the grouting hole, thereby reducing the probability of slurry leakage from around the grouting hole, resulting in slurry loss and a decline in the reinforcement effect.

[0040] Reference Figure 8 and Figure 9, the connecting mechanism 5 includes a second connecting rod 511. The second connecting rod 511 is fixedly connected to the connecting block 34. One end of the second connecting rod 511 away from the connecting block 34 is fixedly connected with a first transmission rack 512. A third mounting plate 513 is fixedly connected to the end face of the second mounting plate 32 close to the transport vehicle 1. A second rotating shaft 514 is rotatably connected to the end faces of the first mounting plate 31 and the third mounting plate 513 close to each other. A first transmission gear 515 is key-connected to the second rotating shaft 514. The first transmission gear 515 meshes with the first transmission rack 512. A fixed block 516 is fixedly connected to the end face of the transport vehicle 1 close to the second mounting plate 32. A third rotating shaft 517 is rotatably connected to the fixed block 516. A second transmission gear 518 is key-connected to the third rotating shaft 517. A second transmission rack 519 is fixedly connected to the first slider 44. The second transmission gear 518 meshes with the second transmission rack 519. The connecting mechanism 5 further includes a transmission assembly 52. The transmission assembly 52 includes a first pulley 521. The first pulley 521 is fixedly connected to the second rotating shaft 514. A second pulley 522 is fixedly connected to the third rotating shaft 517. A belt 523 is rotatably connected to the first pulley 521 and the second pulley 522.

[0041] After the drill bit 36 finishes drilling, the first hydraulic cylinder 33 contracts, thereby driving the movement of the connecting block 34. The connecting block 34 drives the first transmission rack 512 to move through the second connecting rod 511. The first transmission rack 512 drives the first transmission gear 515 to rotate. The first transmission gear 515 drives the first pulley 521 to rotate through the second rotating shaft 514. The first pulley 521 drives the second pulley 522 to rotate through the belt 523. The second pulley 522 drives the second transmission gear 518 to rotate through the third rotating shaft 517. The second transmission gear 518 drives the second transmission rack 519 to move. The second transmission rack 519 drives the cylinder 45 to move through the first slider 44. The cylinder 45 drives the first connecting rod 46 to move. The first connecting rod 46 drives the injection pipe 47 to move to the position where the subgrade needs grouting, thereby improving the automation degree and grouting efficiency of the device.

[0042] Reference Figure 10, on the end face of the transport vehicle 1 close to the roadbed, four through second sliding grooves 11 are opened. A fixing mechanism 6 is also installed on the transport vehicle 1. The fixing mechanism 6 includes four second hydraulic cylinders 61. The four second hydraulic cylinders 61 are all fixedly connected to the transport vehicle 1 and are respectively located at the four corners of the transport vehicle 1. Second sliders 62 are slidably connected in the four through second sliding grooves 11. The four second sliders 62 are respectively fixedly connected to the piston shafts of the four second hydraulic cylinders 61. One ends of the four second sliders 62 far from the second hydraulic cylinders 61 are all fixedly connected with mounting blocks 63. A third sliding groove 631 is opened at one end of the mounting block 63 far from the second slider 62. A second limiting groove 632 is opened on the side wall of the third sliding groove 631. A support block 64 is slidably connected in the third sliding groove 631. A second limiting block 65 is slidably connected in the second limiting groove 632. The second limiting block 65 is fixedly connected with the support block 64. A spring 66 is fixedly connected to the end face of the second limiting block 65 close to the second slider 62. One end of the spring 66 far from the second limiting block 65 is fixedly connected to the side wall of the second limiting groove 632.

[0043] When the drill bit 36 is aligned with the position on the roadbed where drilling is required, the second hydraulic cylinder 61 is activated. The second hydraulic cylinder 61 drives the second slider 62 to slide. The second slider 62 drives the mounting block 63 to move. The mounting block 63 drives the support block 64 to move and makes the mounting block 63 contact the roadbed, thereby supporting the entire transport vehicle 1, reducing the probability that the drilling position deviates due to the shaking of the transport vehicle 1 caused by the rotation of the drill bit 36. At the same time, the setting of the spring 66 also reduces the probability of vibration of the transport vehicle 1, making the drilling more stable.

[0044] The implementation principle of a grouting reinforcement device for subgrade backfill in an embodiment of this application is as follows: When grouting and fixing the subgrade, first push the transport vehicle 1 to the position on the subgrade where grouting is required, then start the second hydraulic cylinder 61. The second hydraulic cylinder 61 drives the second slider 62 to slide, the second slider 62 drives the mounting block 63 to move, and the mounting block 63 drives the support block 64 to move and makes the mounting block 63 contact the subgrade, thereby supporting the entire transport vehicle 1. At this time, start the second motor 371. The second motor 371 drives the first driving gear 372 to rotate, the first driving gear 372 drives the second driving gear 373 to rotate, and the second driving gear 373 drives the drill bit 36 to rotate through the first rotating shaft 35. At the same time, start the first hydraulic cylinder 33. The first hydraulic cylinder 33 drives the connecting block 34 to move, and the connecting block 34 drives the drill bit 36 to drill the subgrade through the first rotating shaft 35; after drilling is completed, the first hydraulic cylinder 33 contracts, thereby driving the connecting block 34 to move. The connecting block 34 drives the first transmission rack 512 to move through the second connecting rod 511. The first transmission rack 512 drives the first transmission gear 515 to rotate. The first transmission gear 515 drives the first pulley 521 to rotate through the second rotating shaft 514. The first pulley 521 drives the second pulley 522 to rotate through the belt 523. The second pulley 522 drives the second transmission gear 518 to rotate through the third rotating shaft 517. The second transmission gear 518 drives the second transmission rack 519 to move. The second transmission rack 519 drives the cylinder 45 to move through the first slider 44. The cylinder 45 drives the first connecting rod 46 to move. The first connecting rod 46 drives the filling pipe 47 to move to the position of the grouting hole. At this time, start the cylinder 45. The cylinder 45 inserts the filling pipe 47 into the grouting hole drilled by the drill bit 36 through the first connecting rod 46. Then start the slurry pump 41. The slurry pump 41 extracts the stirred grouting material through the connecting hose 42 into the filling pipe 47 and then injects it into the grouting hole through the filling pipe 47.

[0045] An embodiment of this application also discloses a construction method for subgrade backfill grouting.

[0046] A construction method for subgrade backfill grouting includes the following steps: Step 1: On-site investigation and design. Before grouting, conduct a detailed investigation and assessment of the construction site to determine the bearing capacity and permeability of the foundation. Step 2: Preparation of grouting materials. According to the subgrade soil quality and design requirements, mix the grouting materials. Step 3: Drilling construction. According to the design requirements, arrange grouting holes on the subgrade through the drilling mechanism 3. Step 4: Grouting construction. Pour the grouting material into the mixing tank 21 for stirring and mixing, and then transport it to the grouting hole through the slurry pump 41 for grouting. Step Five: Quality Inspection and Evaluation. After grouting is completed, the quality of the grouting is inspected to evaluate whether the grouting effect meets the expected goals, and adjustments are made to the subsequent construction. Step Six: Subsequent Construction. After the grouting effect meets the expectations, subsequent pavement construction can be carried out.

[0047] By inspecting and evaluating the quality of the grouting and making timely adjustments, a suitable grouting design plan can be adjusted according to the specific conditions of the subgrade, thereby improving the overall grouting effect.

[0048] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A grouting reinforcement device for roadbed backfill, comprising a transport vehicle (1), wherein a stirring mechanism (2), a grouting mechanism (4) and a drilling mechanism (3) are installed on the transport vehicle (1), characterized in that: It also comprises a connecting mechanism (5), wherein the stirring mechanism (2) is connected to the grouting mechanism (4), and the grouting mechanism (4) is transmission-connected to the drilling mechanism (3) via the connecting mechanism (5).

2. The grouting reinforcement device for roadbed backfilling according to claim 1, characterized in that: The drilling mechanism (3) comprises a first mounting plate (31), the first mounting plate (31) being fixedly connected to the transport vehicle (1), a second mounting plate (32) being fixedly connected to one end of the first mounting plate (31) away from the transport vehicle (1), a first hydraulic cylinder (33) being fixedly connected to the end surface of the second mounting plate (32) close to the transport vehicle (1), a connecting block (34) being fixedly connected to the piston shaft of the first hydraulic cylinder (33), a mounting groove (341) being provided inside the connecting block (34), a first rotating shaft (35) being rotatably connected to the connecting block (34), one end of the first rotating shaft (35) being located in the mounting groove (341), and the other end of the first rotating shaft (35) being connected to the first hydraulic cylinder (33) by a detachable component. (38) is provided with a drill bit (36), a rotating assembly (37) is provided on the connecting block (34), the rotating assembly (37) comprises a second motor (371), the second motor (371) is fixedly connected to the connecting block (34), a first driving gear (372) is keyed to the output shaft of the second motor (371), the first driving gear (372) is located in the mounting groove (341), one end of the first rotating shaft (35) located in the mounting groove (341) is fixedly connected to the second driving gear (373), the second driving gear (373) is meshed with the first driving gear (372), and the diameter of the second driving gear (373) is larger than the diameter of the first driving gear (372).

3. The grouting reinforcement device for roadbed backfilling according to claim 2, characterized in that: The grouting mechanism (4) comprises a slide rail (43), the slide rail (43) being fixedly connected to an end surface of the transport vehicle (1) close to the second mounting plate (32), a first slider (44) being slidably connected to the slide rail (43), a cylinder (45) being fixedly connected to the first slider (44), a first connecting rod (46) being fixedly connected to the piston shaft of the cylinder (45), a filling pipe (47) being fixedly connected to the first connecting rod (46), a slurry pump (41) being fixedly connected to the end surface of the transport vehicle (1) close to the second mounting plate (32), the slurry pump (41) being connected to the stirring mechanism (2), a connecting hose (42) being fixedly connected to the slurry pump (41), an end of the connecting hose (42) away from the slurry pump (41) being connected to the filling pipe (47).

4. The grouting reinforcement device for roadbed backfilling according to claim 3, characterized in that: The connecting mechanism (5) comprises a second connecting rod (511), the second connecting rod (511) being fixedly connected to the connecting block (34), and one end of the second connecting rod (511) away from the connecting block (34) being fixedly connected to a first transmission rack (512); a second rotating shaft (514) being rotatably connected to an end surface of the first mounting plate (31) close to the drill bit (36), a first transmission gear (515) being key-connected to the second rotating shaft (514), and the first transmission gear (515) being meshed with the first transmission rack (512); a fixed block (516) being fixedly connected to an end surface of the transport vehicle (1) close to the second mounting plate (32), and a first transmission gear (515) being rotatably connected to the end surface of the transport vehicle (1) close to the second mounting plate (32), and a first transmission gear (515) being rotatably connected to the first transmission rack (512) A third rotating shaft (517) is connected, a second transmission gear (518) is keyed to the third rotating shaft (517), a second transmission rack (519) is fixedly connected to the first slider (44), and the second transmission gear (518) meshes with the second transmission rack (519); the connecting mechanism (5) further comprises a transmission assembly (52), the transmission assembly (52) comprises a first pulley (521), the first pulley (521) is fixedly connected to the second rotating shaft (514), a second pulley (522) is fixedly connected to the third rotating shaft (517), and a belt (523) is connected to the first pulley (521) and the second pulley (522) for common rotation.

5. The grouting reinforcement device for roadbed backfilling according to claim 2, characterized in that: A first sliding groove (351) is provided on the end surface of the first rotating shaft (35) away from the first hydraulic cylinder (33), and a first limiting groove (352) is provided on the side wall of the first sliding groove (351). The detachable component (38) comprises a sliding rod (381), the sliding rod (381) is slidably connected in the first sliding groove (351) and fixedly connected to the drill bit (36), a first limiting block (382) is slidably connected in the first limiting groove (352), and the first limiting block (382) is fixedly connected to the sliding rod (381), a fixing ring (383) is fixedly connected on the side wall of the sliding rod (381) and the first rotating shaft (35), and two fixing rings (383) are provided on the end surfaces close to each other with perforating holes (386), and the detachable component (38) further comprises a fixing bolt (384), and the fixing bolt (384) passes through the two perforating holes (386) in sequence and is threadedly connected to a fixing nut (385).

6. The grouting reinforcement device for roadbed backfilling according to claim 3, characterized in that: The grouting mechanism (4) further comprises a sealing assembly (48), the sealing assembly (48) comprising a sealing ring (481), the sealing ring (481) being fixedly connected to the side wall of the filling pipe (47), and a rubber sealing ring (482) being fixedly connected to the end surface of the sealing ring (481) close to the roadbed.

7. The grouting reinforcement device for roadbed backfilling according to claim 6, characterized in that: The stirring mechanism (2) comprises a stirring tank (21), the stirring tank (21) being fixedly connected to an end surface of the transport vehicle (1) close to and away from the roadbed; a feed hopper (22) and a first motor (23) are fixedly connected to one end of the stirring tank (21) away from the transport vehicle (1); the feed hopper (22) is communicated with the interior of the stirring tank (21); a stirring shaft (24) is fixedly connected to the output shaft of the first motor (23); a stirring blade (25) is fixedly connected to the side wall of the stirring shaft (24); a discharge pipe (26) is fixedly connected to one end of the stirring tank (21) close to the transport vehicle (1); the discharge pipe (26) is connected to the slurry pump (41); and a discharge valve (27) is fixedly connected to the side wall of the discharge pipe (26).

8. The grouting reinforcement device for roadbed backfilling according to claim 1, characterized in that: The transport vehicle (1) is provided with four penetrating second slide grooves (11) on the end surface close to the roadbed. The transport vehicle (1) is also provided with a fixing mechanism (6). The fixing mechanism (6) comprises four second hydraulic cylinders (61). The four second hydraulic cylinders (61) are all fixedly connected to the transport vehicle (1). Second sliding blocks (62) are slidably connected in the four penetrating second slide grooves (11). The four second sliding blocks (62) are respectively fixedly connected to the piston shafts of the four second hydraulic cylinders (61). The ends of the four second sliding blocks (62) away from the second hydraulic cylinders (61) are all fixedly connected to mounting blocks (63). The mounting blocks (63) are A third slide groove (631) is provided at one end away from the second sliding block (62), a second limiting groove (632) is provided on the side wall of the third slide groove (631), a support block (64) is slidably connected in the third slide groove (631), a second limiting block (65) is slidably connected in the second limiting groove (632), the second limiting block (65) is fixedly connected to the support block (64), a spring (66) is fixedly connected on the end surface of the second limiting block (65) close to the second sliding block (62), and an end of the spring (66) away from the second limiting block (65) is fixedly connected to the side wall of the second limiting groove (632).

9. A roadbed backfill grouting construction method as claimed in claim 7, characterized in that: The following steps are involved: Step 1: Site investigation and design: Before grouting, conduct a detailed investigation and assessment of the construction site to determine the bearing capacity and permeability of the foundation; Step 2: Preparation of grouting materials: matching grouting materials according to the roadbed soil quality and design requirements; Step 3: Drilling construction: according to the design requirements, grouting holes are arranged on the roadbed through the drilling mechanism (3); Step 4: grouting construction, pouring the grouting material into the mixing tank (21) for mixing, and then transporting it to the grouting hole through the grouting pump (41) for grouting; Step 5: Quality inspection and evaluation: After the grouting is completed, the grouting quality is inspected to evaluate whether the grouting effect has reached the expected goal and to adjust the subsequent construction; Step six: Subsequent construction: after the grouting effect reaches the expected level, subsequent pavement construction can be carried out.

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