A grouting reinforcement device for roadbed construction around wells

Abstract

This invention relates to the field of roadbed construction, and more particularly to a grouting reinforcement device for roadbed construction around manholes. This invention provides a grouting reinforcement device for roadbed construction around manholes, which can control the amount of cement used to effectively repair the roadbed, making the cement more uniform and allowing it to more fully fill the roadbed gaps, thereby improving the roadbed repair effect. A grouting reinforcement device for roadbed construction around manholes includes sliding wheels, a base, and a support frame; the base is fixedly connected between four of the sliding wheels, and the support frame is fixedly connected to the top of the base. The rotation of the motor's output shaft drives the piston upward, and the downward movement of the sliding plate drives the piston downward. The piston can intermittently squeeze cement into the roadbed gaps. Workers can control the amount of cement used to effectively repair the roadbed, avoiding excessive residual cement from hardening and causing uneven road surfaces, thus reducing the roadbed repair effect.

Description

Technical Field

[0001] This invention relates to the field of roadbed construction, and in particular to a grouting reinforcement device for roadbed construction around manholes. Background Technology

[0002] Asphalt pavement refers to various types of pavement constructed by incorporating road asphalt materials into mineral materials. Asphalt binders improve the ability of paving aggregates to resist damage to the pavement from traffic and natural factors, resulting in a smooth, dust-free, impermeable, and durable pavement.

[0003] Stress concentration is easily generated around manholes in asphalt pavements, causing damage to the surrounding roadbed. In the repair of the roadbed around manholes, cement grouting is often used. Workers put cement into a funnel, and the cement flows from the bottom of the funnel into the gaps in the roadbed. Workers hold the funnel and fill and repair the roadbed along the gaps around the manhole. Manual filling makes it difficult to control the amount of cement used. Excessive cement continuously flows into the roadbed, which easily leads to cement waste. Excessive residual cement will solidify and cause uneven road surface, which cannot effectively repair the roadbed. In addition, cement has poor flow properties and is prone to clumping in the funnel, resulting in uneven cement distribution and insufficient filling of the roadbed gaps. The lumpy cement will also block the funnel, thereby reducing the repair effect of the roadbed. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a grouting reinforcement device for roadbed construction around manholes. This device can control the amount of cement used to effectively repair the roadbed, making the cement more uniform and allowing it to more fully fill the gaps in the roadbed, thereby improving the repair effect of the roadbed.

[0005] A grouting reinforcement device for roadbed construction around a well includes sliding wheels, a base, a support frame, a discharge mechanism, and a drive mechanism. The base is fixedly connected between the four sliding wheels, and the support frame is fixedly connected to the top of the base. The discharge mechanism is provided on the support frame, and the drive mechanism is provided on the base.

[0006] In one embodiment, the discharge mechanism includes a hopper, a discharge pipe, a first check valve, a hard discharge pipe, a soft discharge pipe, and a second check valve. The hopper is fixedly connected to the support frame. The bottom of the hopper is connected to the discharge pipe. The first check valve is fixedly connected inside the discharge pipe. The bottom end of the discharge pipe is connected to the hard discharge pipe. The bottom end of the hard discharge pipe is connected to the soft discharge pipe via a thread. The second check valve is fixedly connected to the lower part of the hard discharge pipe.

[0007] In one embodiment, the drive mechanism includes a motor, a rotating blade, a slide rail frame, a sliding plate, a return spring, and a piston. The motor is fixedly connected to the top of the base, the rotating blade is fixedly connected to the output shaft of the motor, the slide rail frame is fixedly connected to the support frame, the sliding plate is slidably connected to the slide rail frame, the sliding plate is slidably connected to the discharge pipe, the return spring is connected between the bottom of the hopper and the sliding plate, the piston is fixedly connected to the bottom of the sliding plate, and the piston is slidably connected to the inner wall of the discharge pipe.

[0008] In one embodiment, an elastic mechanism is further included. The driving mechanism is equipped with an elastic mechanism, which includes a fixed frame, a square plate, an upper magnetic ring, a lower magnetic ring, a sliding magnet block, a fixed plate, a rubber hammer, and a telescopic spring. The fixed frame is fixedly connected to the support frame, the square plate is fixedly connected to the support frame, the upper magnetic ring is fixedly connected to the fixed frame, and the lower magnetic ring is fixedly connected to the top of the fixed frame. A sliding block is slidably connected to the sliding plate. The sliding block and the upper magnetic ring have the same magnetic properties and will repel each other. The sliding block and the lower magnetic ring have opposite magnetic properties and will attract each other. A sliding magnet block is fixedly connected to the sliding block. A rubber hammer is slidably connected to the square plate, and a fixed plate is fixedly connected to the rubber hammer. A telescopic spring is connected between the square plate and the fixed plate.

[0009] In one embodiment, a stirring mechanism is also included. The discharging mechanism is equipped with a stirring mechanism, which includes a fixed support, a rotating roller, a stirring roller, a corrugated groove shaft, and a guide plate with a shaft. The fixed support is fixedly connected inside the hopper. The rotating roller is rotatably connected to the fixed support. The stirring roller is fixedly connected to the rotating roller. The top end of the rotating roller is fixedly connected to the corrugated groove shaft, which has a guide groove. The top end of the rubber hammer is fixedly connected to the guide plate with a shaft, and one end of the guide plate with a shaft is located in the guide groove of the corrugated groove shaft.

[0010] In one embodiment, a tamping shaft is also included, with the bottom end of the rotating roller fixedly connected to the tamping shaft, and the lower part of the tamping shaft located inside.

[0011] In one embodiment, a bouncing ball is also included, with the bouncing ball placed at the bottom inner side of the rubber hammer.

[0012] In one embodiment, a roller is also included, which is rotatably connected to the sliding magnet block and contacts the bottom end of the fixed plate.

[0013] In one embodiment, the rotating blade is further provided with rollers, and four rollers are rotatably connected to the rotating blade.

[0014] The beneficial effects are: 1. The rotation of the motor's output shaft will drive the piston to move upward, and the downward movement of the sliding plate will drive the piston to move downward. The cement inside the feeding hard pipe is squeezed into the roadbed gaps that need to be repaired and makes full contact with the roadbed gaps. This allows the piston to intermittently squeeze the cement into the roadbed gaps, enabling workers to control the amount of cement used to effectively repair the roadbed. This avoids cement continuously flowing into the roadbed and causing waste. Furthermore, excessive residual cement will cause uneven road surfaces after solidification, reducing the roadbed repair effect.

[0015] 2. The upward movement of the sliding plate will drive the rubber hammer to move upward. When the sliding magnet block and the lower magnet ring are at the same horizontal level, they will attract each other because the lower magnet ring and the sliding magnet block have opposite magnetic properties. The sliding magnet block will then disengage from the fixed plate. The fixed plate and the rubber hammer will move downward together under the elastic force of the extension spring. The rubber hammer will hit the road surface, causing the road surface to vibrate. This vibration will allow the cement to make better contact with the roadbed gaps, enabling the cement to fill the gaps more fully and repair the roadbed more effectively, thereby improving the repair effect.

[0016] 3. The reciprocating movement of the rubber hammer drives the corrugated groove shaft to rotate while simultaneously moving up and down. The rotation of the corrugated groove shaft drives the mixing roller to rotate, which in turn mixes the cement inside the hopper evenly. The evenly mixed cement has good flow properties, which can further and more fully fill the roadbed gaps, thereby further improving the roadbed repair effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a partial three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a partial three-dimensional structural diagram of the driving mechanism of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the motor, rotating blade, and roller of the present invention.

[0021] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the material discharge mechanism and the drive mechanism of the present invention.

[0022] Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the elastic mechanism and stirring mechanism of the present invention.

[0023] Figure 7 This is a partial three-dimensional structural diagram of the stirring mechanism of the present invention.

[0024] Figure 8This is a cross-sectional three-dimensional structural diagram of the driving mechanism, elastic mechanism and stirring mechanism of the present invention.

[0025] Figure 9 This is a partial three-dimensional structural diagram of the elastic mechanism of the present invention.

[0026] Figure 10 This is a partial cross-sectional three-dimensional structural schematic diagram of the elastic mechanism of the present invention.

[0027] The markings in the diagram are as follows: 1-Sliding wheel, 2-Base, 3-Support frame, 41-Hopper, 42-Discharge pipe, 43-One-way valve one, 44-Discharge rigid pipe, 45-Discharge flexible pipe, 46-One-way valve two, 51-Motor, 52-Rotating blade, 53-Slide rail frame, 54-Sliding plate, 55-Reset spring, 56-Piston, 61-Fixed frame, 62-Square plate, 63-Upper magnet ring, 64-Lower magnet ring, 65-Sliding block, 651-Sliding magnet block, 66-Fixed plate, 67-Rubber hammer, 68-Telescopic spring, 71-Fixed bracket, 72-Rotating roller, 73-Stirring roller, 74-Corrugated groove shaft, 75-Guide plate with shaft, 8-Mashing shaft, 9-Bouncing ball, 10-Roller, 11-Roller. Detailed Implementation

[0028] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the prior art, and will not be described in detail here.

[0029] Example 1: A grouting reinforcement device for roadbed construction around a manhole, such as Figures 1-5 As shown, it includes a sliding wheel 1, a base 2, a support frame 3, a discharge mechanism and a drive mechanism. The four sliding wheels 1 are connected to the base 2 by bolts. The top of the base 2 is connected to the support frame 3 by bolts. The support frame 3 is equipped with a discharge mechanism, and the base 2 is equipped with a drive mechanism.

[0030] The discharge mechanism includes a hopper 41, a discharge pipe 42, a first check valve 43, a discharge rigid pipe 44, a discharge flexible pipe 45, and a second check valve 46. The hopper 41 is bolted to the support frame 3. The bottom of the hopper 41 is connected to the discharge pipe 42. The first check valve 43 is riveted to the inside of the discharge pipe 42. The bottom end of the discharge pipe 42 is connected to the discharge rigid pipe 44. The bottom end of the discharge rigid pipe 44 is threaded to the discharge flexible pipe 45. The second check valve 46 is riveted to the lower part of the discharge rigid pipe 44.

[0031] The drive mechanism includes a motor 51, a rotating blade 52, a slide rail frame 53, a sliding plate 54, a return spring 55, and a piston 56. The top of the base 2 is bolted to the motor 51, and the rotating blade 52 is fixedly connected to the output shaft of the motor 51. The slide rail frame 53 is bolted to the support frame 3, and the sliding plate 54 is slidably connected to the slide rail frame 53. The sliding plate 54 is slidably connected to the discharge pipe 42. The bottom of the hopper 41 and the sliding plate 54 are connected to the return spring 55 by a hook. The bottom of the sliding plate 54 is riveted to the piston 56, and the piston 56 is slidably connected to the inner wall of the discharge hard pipe 44.

[0032] First, the worker feeds cement into hopper 41. The cement flows through hopper 41 into discharge pipe 42. Then, the worker starts motor 51. The output shaft of motor 51 rotates, driving the rotating blade 52 to rotate. The rotating blade 52 contacts the sliding plate 54, pushing it upward. The return spring 55 is compressed, and the upward movement of the sliding plate 54 drives the piston 56 upward, reducing the pressure inside the discharge pipe 44. Under this pressure, the cement in discharge pipe 42 is drawn into the discharge pipe 44 through the one-way valve. The rotating blade 52 then disengages from the sliding plate 54, and the sliding plate 54 moves downward under the force of the return spring 55. This downward movement of the sliding plate 54 drives the piston 56 downward, thus reducing the pressure inside the discharge pipe 44. The cement inside is squeezed into the discharge hose 45 through the one-way valve 46. The worker contacts one end of the discharge hose 45 with the roadbed that needs to be repaired. The cement in the discharge hose 45 flows into the gaps in the roadbed that needs to be repaired and makes full contact with the gaps, so that the cement can fully fill the gaps in the roadbed. The rotation of the rotating blade 52 pushes the sliding plate 54 to move upward. This process is repeated so that the piston 56 can intermittently draw cement into the discharge pipe 44 through the one-way valve and intermittently squeeze the cement in the discharge pipe 44 into the gaps in the roadbed. This allows the worker to control the amount of cement used to effectively repair the roadbed and avoid cement from continuously flowing into the roadbed, which would cause cement waste. In addition, the cement residue after solidification will cause uneven road surface and reduce the roadbed repair effect.

[0033] Example 2: Based on Example 1, such as Figures 8-10As shown, it also includes an elastic mechanism. The drive mechanism is equipped with an elastic mechanism, which includes a fixed frame 61, a square plate 62, an upper magnetic ring 63, a lower magnetic ring 64, a sliding magnet block 651, a fixed plate 66, a rubber hammer 67, and a telescopic spring 68. The fixed frame 61 is bolted to the support frame 3, and the square plate 62 is bolted to the support frame 3. The upper magnetic ring 63 is fixedly connected to the fixed frame 61, and the lower magnetic ring 64 is fixedly connected to the top of the fixed frame 61. The sliding plate 54 slides upwards... A sliding block 65 is movably connected. The sliding block 65 has the same magnetic properties as the upper magnetic ring 63, and the sliding block 65 and the upper magnetic ring 63 will repel each other. The sliding block 65 has opposite magnetic properties to the lower magnetic ring 64, and the sliding block 65 and the lower magnetic ring 64 will attract each other. A sliding magnet block 651 is connected to the sliding block 65 by bolts. A rubber hammer 67 is slidably connected to the square plate 62. A fixing plate 66 is connected to the rubber hammer 67 by bolts. A telescopic spring 68 is connected between the square plate 62 and the fixing plate 66 by hooks.

[0034] The upward movement of the sliding plate 54 causes the sliding block 65 to move upward, which in turn causes the sliding magnet 651 to move upward. The upward movement of the sliding magnet 651 brings it into contact with the bottom of the fixed plate 66. This upward movement of the sliding magnet 651 pushes the fixed plate 66 upward, compressing the telescopic spring 68. The upward movement of the fixed plate 66 then causes the rubber hammer 67 to move upward. When the sliding magnet 651 and the lower magnet ring 64 are at the same horizontal level, they attract each other due to their opposite magnetism. The sliding magnet 651 moves away from the rubber hammer 67, causing the sliding block 65 to move away from the rubber hammer 67. This movement of the sliding magnet 651 then causes the sliding block 65 to move away from the rubber hammer 67, disengaging it from the fixed plate 66. The fixed plate 66 and the rubber hammer 67 then move downward together under the force of the telescopic spring 68. The rubber hammer 67 impacts the road surface, causing vibrations. These vibrations help to improve the bonding between the cement and the roadbed. The contact allows the cement to more fully fill the roadbed gaps, enabling it to repair the roadbed more effectively and thus improving the repair effect. When the rotating blade 52 disengages from the sliding plate 54, the downward movement of the sliding plate 54 causes the sliding block 65 to move downward, which in turn causes the sliding magnet block 651 to move downward. The downward movement of the sliding magnet block 651 disengages from the lower magnet ring 64. When the sliding magnet block 651 and the upper magnet ring 63 are on the same horizontal line, they repel each other because the upper magnet ring 63 and the sliding magnet block 651 have the same magnetism. Under the action of magnetic force, the sliding magnet block 651 moves closer to the rubber hammer 67. The movement of the sliding magnet block 651 causes the sliding block 65 to move closer to the rubber hammer 67. The upward movement of the sliding plate 54 causes the sliding block 65 to move upward. This process repeats, allowing the rubber hammer 67 to intermittently strike the ground, causing ground vibration and enabling the cement to more fully fill the roadbed gaps, thus improving the roadbed repair.

[0035] Example 3: Based on Example 2, such as Figures 6-8 As shown, it also includes a stirring mechanism. The discharge mechanism is equipped with a stirring mechanism, which includes a fixed bracket 71, a rotating roller 72, a stirring roller 73, a corrugated groove shaft 74, and a guide plate 75 with a shaft. The fixed bracket 71 is fixedly connected inside the hopper 41. The rotating roller 72 is rotatably connected to the fixed bracket 71. The rotating roller 72 is vertically arranged. The stirring roller 73 is fixedly connected to the rotating roller 72. The top end of the rotating roller 72 is fixedly connected to the corrugated groove shaft 74. The corrugated groove shaft 74 has a guide groove. The top end of the rubber hammer 67 is bolted to the guide plate 75 with a shaft. One end of the guide plate 75 with a shaft is located in the guide groove of the corrugated groove shaft 74.

[0036] The reciprocating movement of the rubber hammer 67 causes the guide plate 75 with shaft to reciprocate up and down. The reciprocating movement of the guide plate 75 with shaft causes the corrugated groove shaft 74 to rotate along the guide groove. The rotation of the corrugated groove shaft 74 causes the rotating roller 72 to rotate. The rotation of the rotating roller 72 causes the mixing roller 73 to rotate. The rotation of the mixing roller 73 will mix the cement inside the hopper 41 evenly. The evenly mixed cement has good flow properties and can further and more fully fill the roadbed gaps, thereby further improving the roadbed repair effect.

[0037] Example 4: Based on Example 3, such as Figures 5-6 As shown, it also includes a tamping shaft 8. The bottom end of the rotating roller 72 is fixedly connected to the tamping shaft 8. The lower part of the tamping shaft 8 is located inside the discharge pipe 42. The tamping shaft 8 is vertically arranged.

[0038] The rotation of the rotating roller 72 will drive the tamping shaft 8 to rotate, so that the tamping shaft 8 can agitate the cement in the discharge pipe 42, preventing large particles of impurities in the cement from clumping and blocking the discharge pipe 42, and allowing the cement in the discharge pipe 42 to flow better.

[0039] Example 5: Based on Example 4, such as Figures 4-10 As shown, it also includes a bouncing ball 9, which is placed on the bottom inner side of the rubber hammer 67.

[0040] It also includes a roller 10, which is rotatably connected to the sliding magnet block 651, and the roller 10 is in contact with the bottom end of the fixed plate 66.

[0041] It also includes rollers 11, and four rollers 11 are rotatably connected to the rotating blade 52.

[0042] When the rubber hammer 67 strikes the ground, the bouncing ball 9 inside the rubber hammer 67 moves up and down repeatedly under the action of elasticity. The bouncing ball 9 will continuously strike the rubber hammer 67, causing the rubber hammer 67 to vibrate continuously. The continuous vibration of the rubber hammer 67 will cause the road surface to vibrate continuously, so that the cement can fill the roadbed gaps more fully. The upward movement of the rubber hammer 67 will drive the bouncing ball 9 to move upward.

[0043] Moving the sliding magnet 651 upward will cause the roller 10 to move upward. When the sliding magnet 651 and the lower magnet ring 64 are on the same horizontal line, the sliding magnet 651 moves away from the rubber hammer 67, which will cause the roller 10 to move. At the same time, the roller 10 will rotate. The roller 10 will disengage from the fixed plate 66 when it moves away from the rubber hammer 67. Moving the sliding magnet 651 downward will cause the roller 10 to move downward. When the sliding magnet 651 and the upper magnet ring 63 are on the same horizontal line, the sliding magnet 651 moves closer to the rubber hammer 67, which will cause the roller 10 to move. At the same time, the roller 10 will rotate. The roller 10 will contact the fixed plate 66 when it moves closer to the rubber hammer 67. The roller 10 can reduce the friction between itself and the fixed plate 66, reduce the wear of the fixed plate 66, and thus extend the service life of the fixed plate 66.

[0044] The rotation of the rotating blade 52 will cause the four rollers 11 to rotate together. When one of the rollers 11 rotates, it will come into contact with the sliding plate 54. When the rotating blade 52 rotates, it will cause one of the rollers 11 to disengage from the sliding plate 54. When the rotating blade 52 rotates, it will cause the next roller 11 to come into contact with the sliding plate 54. This process is repeated. The four rollers 11 will reduce the friction between themselves and the sliding plate 54, thereby reducing the wear of the sliding plate 54 and extending its service life.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A grouting reinforcement device for roadbed construction around wells, characterized in that, It includes a sliding wheel (1), a base (2), a support frame (3), a discharge mechanism and a drive mechanism. The four sliding wheels (1) are fixedly connected to the base (2). The top of the base (2) is fixedly connected to the support frame (3). The support frame (3) is provided with a discharge mechanism. The base (2) is provided with a drive mechanism. The discharge mechanism includes a hopper (41), a discharge pipe (42), a one-way valve (43), a discharge hard pipe (44), a discharge hose (45), and a one-way valve (46). The hopper (41) is fixedly connected to the support frame (3). The bottom of the hopper (41) is connected to the discharge pipe (42). The discharge pipe (42) is fixedly connected to the inside of the discharge pipe (42). The bottom end of the discharge pipe (42) is connected to the discharge hard pipe (44). The bottom end of the discharge hard pipe (44) is connected to the discharge hose (45) by a thread. The lower part of the discharge hard pipe (44) is fixedly connected to the one-way valve (46). The drive mechanism includes a motor (51), a rotating blade (52), a slide rail frame (53), a sliding plate (54), a return spring (55), and a piston (56). The top of the base (2) is fixedly connected to the motor (51). The rotating blade (52) is fixedly connected to the output shaft of the motor (51). The slide rail frame (53) is fixedly connected to the support frame (3). The sliding plate (54) is slidably connected to the slide rail frame (53). The sliding plate (54) is slidably connected to the discharge pipe (42). The bottom of the hopper (41) is connected to the sliding plate (54). The return spring (55) is connected between the bottom of the hopper (41) and the sliding plate (54). The bottom of the sliding plate (54) is fixedly connected to the piston (56). The piston (56) is slidably connected to the inner wall of the discharge hard pipe (44). It also includes an elastic mechanism. The drive mechanism is equipped with an elastic mechanism, which includes a fixed frame (61), a square plate (62), an upper magnet ring (63), a lower magnet ring (64), a sliding magnet block (651), a fixed plate (66), a rubber hammer (67), and a telescopic spring (68). The fixed frame (61) is fixedly connected to the support frame (3). The square plate (62) is fixedly connected to the support frame (3). The upper magnet ring (63) is fixedly connected to the fixed frame (61). The lower magnet ring (64) is fixedly connected to the top of the fixed frame (61). The sliding plate (54) slides on the... A sliding block (65) is connected to the square plate (62). The sliding block (65) has the same magnetic properties as the upper magnet ring (63) and will repel the upper magnet ring (63). The sliding block (65) has opposite magnetic properties to the lower magnet ring (64) and will attract the lower magnet ring (64). A sliding magnet block (651) is fixedly connected to the sliding block (65). A rubber hammer (67) is slidably connected to the square plate (62). A fixing plate (66) is fixedly connected to the rubber hammer (67). A telescopic spring (68) is connected between the square plate (62) and the fixing plate (66).

2. The grouting reinforcement device for roadbed construction around a well according to claim 1, characterized in that, It also includes a stirring mechanism. The discharge mechanism is equipped with a stirring mechanism, which includes a fixed bracket (71), a rotating rod (72), a stirring rod (73), a corrugated groove shaft (74), and a guide plate (75) with a shaft. The fixed bracket (71) is fixedly connected inside the hopper (41). The rotating rod (72) is rotatably connected to the fixed bracket (71). The stirring rod (73) is fixedly connected to the rotating rod (72). The top end of the rotating rod (72) is fixedly connected to the corrugated groove shaft (74). The corrugated groove shaft (74) has a guide groove. The top end of the rubber hammer (67) is fixedly connected to the guide plate (75) with a shaft. One end of the guide plate (75) with a shaft is located in the guide groove of the corrugated groove shaft (74).

3. The grouting reinforcement device for roadbed construction around a well according to claim 2, characterized in that, It also includes a tamping shaft (8), the bottom end of the rotating roller (72) is fixedly connected to the tamping shaft (8), and the lower part of the tamping shaft (8) is located inside 42.

4. The grouting reinforcement device for roadbed construction around a manhole according to claim 3, characterized in that, It also includes a bouncing ball (9), which is placed on the bottom inner side of the rubber hammer (67).

5. A grouting reinforcement device for roadbed construction around a manhole according to claim 4, characterized in that, It also includes a roller (10), which is rotatably connected to the sliding magnet block (651), and the roller (10) is in contact with the bottom end of the fixing plate (66).

6. A grouting reinforcement device for roadbed construction around a manhole according to claim 5, characterized in that, It also includes rollers (11), and four rollers (11) are rotatably connected to the rotating blade (52).

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