Filling and tamping device for filling soil between ventilation pipe roadbed pipes

Abstract

The invention relates to the technical field of ventilation pipe roadbeds, in particular to a ventilation pipe roadbed inter-pipe filling and tamping device which comprises a top plate, a vibrator is fixedly connected to the center of the top face of the top plate, a first sliding groove is formed in the side wall of the top plate, and a first tamping assembly and a second tamping assembly are slidably connected into the first sliding groove; and moving assemblies are symmetrically arranged below the top plate, the first tamping assembly and the second tamping assembly are arranged between the two moving assemblies, the two moving assemblies are jointly connected with an adjusting assembly used for controlling the moving assemblies to ascend and descend, and the adjusting assembly is arranged in the top plate. The distance between the two semispherical tamping plates can be matched with the outer diameter of the ventilation pipe through the two second sliding blocks, then the positions of the two flat tamping plates are adjusted through the two first sliding blocks, and the tamping area is effectively increased; in the process of tamping filled soil between the pipes, the stress on the two sides of the ventilation pipes can be effectively kept, and the efficiency of tamping the backfilled soil can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ventilation pipe subgrade, in particular to a ventilation pipe subgrade pipe interval filling soil tamping device. BACKGROUND

[0002] The thermal disturbance of highway construction to the subgrade in permafrost regions is relatively strong. Due to the construction of the subgrade, the water and heat conditions of the frozen soil are changed, causing redistribution of water and heat, and accelerating the degradation process of permafrost. To prevent the subgrade from producing large deformation and ensure the strength and stability of the subgrade is the key to highway engineering construction. The uneven settlement caused by the lowering of the upper limit of permafrost under the highway subgrade is the main way of road damage. In the past, the design scheme for treating these subgrade diseases relied too much on increasing the thermal resistance to protect the frozen soil, and the treatment means of frozen soil engineering was relatively single. However, a large number of engineering practices have proved that the measures to increase the thermal resistance, such as increasing the height of the embankment and using thermal insulation materials, can delay the melting of permafrost, but cannot fundamentally improve the trend of increasing the thermal storage of the subgrade year by year.

[0003] At present, a ventilation pipe subgrade has been put forward. The ventilation embankment is to bury ventilation pipes in appropriate positions of the embankment in the high-temperature and unstable area to strengthen the ventilation of the subgrade, use the air gap artificially created in the embankment to change the heat transfer of the general embankment, change the single heat conduction mode to a mixed mode of heat conduction and convection to promote the heat dissipation of the embankment, improve the cold storage of the base, and maintain the stability of the permafrost of the foundation. The ventilation pipe ventilation subgrade increases the porosity of the embankment and the circulation of air. In winter, the cold air with high density outside the embankment replaces the hot air with low density in the ventilation pipe in the embankment, promoting the dissipation of heat in the embankment. In the warm season, due to the high temperature being higher than the temperature of the embankment, the ground-air temperature gradient is reversed, inhibiting the convection heat transfer and reducing the accumulation of heat in the embankment, thereby achieving the purpose of protecting the permafrost.

[0004] However, when the backfill soil of the ventilation pipe subgrade is tamped, the construction personnel only use the existing tamper to tamp the backfill soil on one side of the ventilation pipe, resulting in that one side of the ventilation pipe is stressed, the other side is not stressed, and the backfill soil is pushed and squeezed at the same time, so that the tamping effect of the backfill soil is poor. At the same time, since the existing tamper can only tamp the backfill soil on one side of the ventilation pipe, it not only consumes time, but also consumes a lot of effort, resulting in low tamping efficiency of the backfill soil. Therefore, a ventilation pipe subgrade pipe interval filling soil tamping device is urgently needed, which can effectively maintain the stress of both sides of the ventilation pipe during the tamping process of the pipe interval filling soil, and effectively improve the tamping efficiency of the backfill soil. SUMMARY

[0005] The purpose of the present application is to provide a ventilation pipe subgrade pipe interval filling soil tamping device to solve the problems existing in the prior art.

[0006] In order to achieve the above object, the present application provides the following scheme: a ventilation pipeline base pipe filling tamping device, comprising a top plate, the top surface center of the top plate is fixedly connected with a vibrator, a first sliding groove is formed in the side wall of the top plate, a first tamping assembly and a second tamping assembly are slidably connected in the first sliding groove, a moving assembly is symmetrically arranged below the top plate, the first tamping assembly and the second tamping assembly are arranged between the two moving assemblies, the two moving assemblies are commonly connected with an adjusting assembly for controlling the lifting of the moving assembly, and the adjusting assembly is arranged in the top plate; the first tamping assembly comprises symmetrically arranged first sliding blocks, the first driving part drives the two first sliding blocks to move towards or away from each other along the first sliding groove, and the two ends of the first sliding blocks extending out of the first sliding groove are fixedly connected with flat tamping plates through first connecting plates; the second tamping assembly comprises symmetrically arranged second sliding blocks between the two first sliding blocks, the second driving part drives the second sliding blocks to move towards or away from each other along the first sliding groove, and the two ends of the second sliding blocks extending out of the first sliding groove are fixedly connected with hemispherical tamping plates through second connecting plates; and the flat tamping plates and the hemispherical tamping plates are arranged below the top plate.

[0007] Preferably, a support block is fixedly connected in the middle of the first sliding groove.

[0008] Preferably, the first driving part comprises a first lead screw rotatably connected in the first sliding groove, the first lead screw is threadedly connected with the first sliding block, the first lead screw penetrates through the second sliding block and is slidably connected with the second sliding block, and the first lead screw penetrates through the support block and is rotatably connected with the support block.

[0009] Preferably, the second driving part comprises a second lead screw rotatably connected in the first sliding groove, the second lead screw is threadedly connected with the second sliding block, the second lead screw penetrates through the first sliding block and is slidably connected with the first sliding block, and the second lead screw penetrates through the support block and is rotatably connected with the support block.

[0010] Preferably, a plurality of first limiting blocks are fixedly connected at one end of the flat tamping plate facing the bottom surface of the top plate, a second sliding groove is slidably connected with the first limiting blocks, and the second sliding groove is formed in the bottom surface of the top plate.

[0011] Preferably, a plurality of second limiting blocks are fixedly connected at one end of the hemispherical tamping plate facing the bottom surface of the top plate, the second limiting blocks are correspondingly arranged with and slidably connected with the second sliding groove.

[0012] Preferably, the moving assembly comprises a movable plate, and a plurality of rollers are fixedly connected to the bottom of the movable plate.

[0013] Preferably, the adjusting assembly comprises cavities symmetrically arranged in the top plate, two of the cavities are arranged at the sides away from each other of the two first sliders, a first bevel gear is rotationally connected in the cavity, the first bevel gear is engaged with a second bevel gear, and the center of the first bevel gear is drivingly connected with a first transmission rod; and the two second bevel gears are drivingly connected through a second transmission rod.

[0014] Preferably, one end of the first transmission rod extending out of the bottom surface of the top plate is fixedly connected with a screw rod, the end of the screw rod away from the first transmission rod is threadedly connected with a third threaded hole, the third threaded hole is arranged at the end of the movable plate facing the top plate, and the two sides of the third threaded hole are respectively provided with limiting rods, one end of the limiting rod is fixedly connected with the movable plate, and the other end of the limiting rod is slidingly connected with a third sliding groove arranged in the bottom surface of the top plate.

[0015] Preferably, one end of the first transmission rod extending out of the top surface of the top plate is drivingly connected with a hand wheel.

[0016] The present application discloses the following technical effects:

[0017] The present application adjusts the distance between the two hemispherical rammer plates by moving the two second sliders towards or away from each other, so that the two hemispherical rammer plates are arranged on the two sides of the ventilation pipe, and the distance between the two hemispherical rammer plates is adapted to the outer diameter of the ventilation pipe, and then the positions of the two flat rammer plates are adjusted by moving the two first sliders towards or away from each other, so as to increase the ramming area; and the present application can effectively maintain the stress on the two sides of the ventilation pipe and effectively improve the efficiency of the backfilling soil ramming during the process of filling soil between the pipes. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is a front view structural schematic diagram of the present application;

[0020] Figure 2 It is a top view structural schematic diagram of the present application;

[0021] Figure 3 It is a top view structural schematic diagram of the present application;

[0022] Figure 4 It is a top view structural schematic diagram of the present application;

[0023] Figure 5 It is a first tamping assembly structure schematic diagram of the application;

[0024] Figure 6 It is a second tamping assembly structure schematic diagram of the application;

[0025] Figure 7 It is a movable plate structure schematic diagram of the application;

[0026] Figure 8 It is a top plate front cross-sectional structure schematic diagram of the application;

[0027] Among them, 1, top plate; 2, first sliding block; 3, second sliding block; 4, movable plate; 5, vibration machine; 11, first sliding groove; 12, support block; 13, first lead screw; 14, first drive motor; 15, second lead screw; 16, second drive motor; 17, second sliding groove; 18, cavity; 21, first connecting plate; 22, first limiting block; 23, first threaded hole; 24, first through hole; 25, flat plate rammer plate; 31, second connecting plate; 32, second limiting block; 33, second threaded hole; 34, second through hole; 35, semispherical rammer plate; 41, roller; 42, limiting rod; 43, third threaded hole; 44, screw rod; 45, first transmission rod; 46, first bevel gear; 47, second bevel gear; 48, second transmission rod; 49, hand wheel. DETAILED DESCRIPTION

[0028] The embodiments found in the art are:

[0029] The patent with the patent publication number CN117127580A discloses a backfill soil roadbed reinforcing device with tamping function, which comprises a control adjusting structure as a base, a soil tamping structure is arranged inside the control adjusting structure, and soil backfill structures are arranged on both sides of the soil tamping structure; the control adjusting structure comprises a mounting base provided with a control driving wheel at the bottom, a mounting column with a matching column is arranged on the mounting base, and a mounting hole for conveniently installing and arranging a first adjusting cylinder is arranged on the matching column; a fixed column with a matching groove is arranged on the output end of the first adjusting cylinder, and another mounting column with a first adjusting cylinder is also arranged on the side above the fixed column, and a fixed column with a matching groove is also arranged between the other mounting columns.

[0030] The patent sets up a tamping assembly in the soil tamping structure, thereby solving the problem that directly pouring backfill soil into the foundation pit cannot reinforce the backfill soil, and the road surface on the backfill soil may deform and become loose after a long time of use, causing cracks and faults in the upper road surface, which has certain safety hazards and is inconvenient. When the soil is backfilled, the operator drives the control motor to work, and the worm gear drives the worm to move under stress during the working process of the control motor. The worm moves under stress during the working process of the control motor, driving the tamping piece and the through block to move synchronously under stress. The tamping piece moves reciprocally under stress during the working process, thereby tamping the backfilled soil; the patent sets up a soil backfilling structure, thereby solving the problem that the soil cannot be backfilled during the working process of the tamping assembly. When the tamping assembly is working, the operator controls the output motor to work, and the crushing roller set moves under stress during the working process of the output motor. When the soil is backfilled, the operator puts the soil into the hopper, and the crushing roller set crushes the soil and transports it to the tamping frame through the conveying pipe for backfilling and tamping; the patent sets up a control and adjustment structure with a control driving wheel, a mounting base, a wireless remote control antenna, a central controller, and a wireless remote control, thereby solving the problem that the overall equipment needs to be manually moved during the working process, causing low work efficiency. When the soil is backfilled and tamped, the operator drives the control driving wheel to work using the wireless remote control, and the overall equipment moves slowly when the control driving wheel works. The overall equipment slowly moves, thereby gradually backfilling and tamping the soil at the position where the soil needs to be backfilled; the patent sets up a control and adjustment structure with a mounting column, a matching column, a first adjustment cylinder, a matching groove, and a fixed column, thereby solving the problem that the overall equipment cannot be adjusted according to the actual backfilling width and height, and causing low adjustability of the overall equipment. When the actual backfilling width needs to be adjusted, the operator controls the first adjustment cylinder to work, and the mounting column and the fixed column move relatively under stress when the first adjustment cylinder works. The relative width and the lifting interval distance between the mounting column and the fixed column are changed, thereby facilitating the overall equipment to adapt to different widths and depths of the position for backfilling and tamping.

[0031] Patent publication number CN220789709U discloses a compaction device for backfill soil between pipes, including a hydraulic plate compactor. Long strip blocks are provided on the left and right sides of the bottom surface of the compactor plate, with the length of the strip blocks equal to the width of the bottom surface of the compactor plate. An isolation plate is provided below the strip blocks, with its length and width equal to the length and width of the bottom surface of the compactor plate, respectively. The strip blocks and the isolation plate are fixed to the compactor plate by bolts and nuts. Several vibrating tubes are uniformly welded to the bottom surface of the isolation plate, located between and parallel to the strip blocks. The diameter of the vibrating tubes is smaller than the distance between adjacent pipes, and the distance between the vibrating tubes is equal to the distance between the pipes. Pull rings are symmetrically provided on the left and right sides of both sides of the compactor plate along its length, with pull ropes fixed to the pull rings.

[0032] The compaction device of this patent can compact the backfill soil between pipes without damaging the pipes. The device can be obtained by simply modifying an existing small hydraulic plate compactor. It has a simple structure, is detachable, and does not affect the normal use of the hydraulic plate compactor, giving it multiple functions, reducing the difficulty of compacting the backfill soil between pipes and improving the compaction quality.

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figures 1 to 8This invention provides a soil compaction device for the backfill between ventilation duct foundation pipes, including a top plate 1. A vibrator 5 is fixedly connected to the center of the top surface of the top plate 1. A first groove 11 is formed on the side wall of the top plate 1, and a first compaction component and a second compaction component are slidably connected in the first groove 11. Moving components are symmetrically arranged below the top plate 1. The first compaction component and the second compaction component are arranged between the two moving components. The two moving components are connected to an adjustment component for controlling the lifting and lowering of the moving components. The adjustment component is arranged inside the top plate 1. The first compaction component includes a symmetrically arranged first slider 2, which is driven by a first drive unit. Two first sliders 2 move closer to or further away from each other along the first slide groove 11. The two ends of the first sliders 2 extending out of the first slide groove 11 are respectively fixedly connected to a flat tamping plate 25 through a first connecting plate 21. The second tamping component includes a second slider 3 symmetrically arranged between the two first sliders 2. The second sliders 3 are driven by a second driving part to move closer to or further away from each other along the first slide groove 11. The two ends of the second sliders 3 extending out of the first slide groove 11 are respectively fixedly connected to a hemispherical tamping plate 35 through a second connecting plate 31. The flat tamping plate 25 and the hemispherical tamping plate 35 are arranged below the top plate 1.

[0036] This invention adjusts the distance between two hemispherical tamping plates 35 by moving two second sliders 3 closer to or further away from each other, positioning the two hemispherical tamping plates 35 on both sides of the ventilation pipe and ensuring that the distance between the two hemispherical tamping plates 35 matches the outer diameter of the ventilation pipe. Then, by moving two first sliders 2 closer to or further away from each other, the position of the two flat tamping plates 25 is adjusted to increase the compaction area. This invention not only effectively maintains the force on both sides of the ventilation pipe during the compaction of backfill soil between pipes, but also effectively improves the efficiency of backfill soil compaction.

[0037] In a further optimized design, a support block 12 is fixedly connected to the center of the first slide 11. The support block 12 effectively reduces the length of the first slide 11, ensuring that the top plate 1 can vibrate with the vibrator 5 without deformation of the first slide 11.

[0038] In a further optimized design, the first drive unit includes a first lead screw 13 rotatably connected within the first slide groove 11, the first lead screw 13 being threadedly connected to the first slider 2, the first lead screw 13 passing through the second slider 3 and being slidably connected to the second slider 3, and the first lead screw 13 passing through the support block 12 and being rotatably connected to the support block 12.

[0039] Either end of the first lead screw 13 passes through the first slide groove 11, and the end of the first lead screw 13 extending out of the top plate 1 is connected to the first drive motor 14. The first drive motor 14 is fixedly connected to the outer wall of the top plate 1.

[0040] The first drive motor 14 drives the first lead screw 13 to rotate, and the first lead screw 13 drives the two first sliders 2 to move closer or further apart.

[0041] In a further optimized design, the second drive unit includes a second lead screw 15 rotatably connected within the first slide groove 11. The second lead screw 15 is threadedly connected to the second slider 3. The second lead screw 15 passes through the first slider 2 and is slidably connected to the first slider 2. The second lead screw 15 passes through the support block 12 and is rotatably connected to the support block 12.

[0042] Either end of the second lead screw 15 passes through the first slide groove 11, and the end of the second lead screw 15 extending out of the top plate 1 is connected to the second drive motor 16, which is fixedly connected to the outer wall of the top plate 1.

[0043] The second drive motor 16 drives the second lead screw 15 to rotate, and the second lead screw 15 drives the two second sliders 3 to move closer or further apart.

[0044] Both the first lead screw 13 and the second lead screw 15 are bidirectional lead screws.

[0045] Both the first drive motor 14 and the second drive motor 16 are servo motors.

[0046] The first slider 2 has a first threaded hole 23 and a first through hole 24. The first threaded hole 23 is threadedly connected to the first lead screw 13, and the first through hole 24 is slidably connected to the second lead screw 15.

[0047] The second slider 3 has a second threaded hole 33 and a second through hole 34. The second threaded hole 33 is threadedly connected to the second lead screw 15, and the second through hole 34 is slidably connected to the first lead screw 13.

[0048] In a further optimized design, a plurality of first limiting blocks 22 are fixedly connected to one end of the flat tamping plate 25 facing the bottom surface of the top plate 1. The first limiting blocks 22 are slidably connected to a second sliding groove 17, which is opened on the bottom surface of the top plate 1.

[0049] The first limiting block 22 moves along the second slide groove 17, which facilitates the adjustment of the distance between the two flat tamping plates 25. At the same time, the first limiting block 22 is located in the second slide groove 17, which enables the flat tamping plates 25 to carry out compaction work stably.

[0050] In a further optimized design, a plurality of second limiting blocks 32 are fixedly connected to one end of the hemispherical ramming plate 35 facing the bottom surface of the top plate 1. The second limiting blocks 32 are set one-to-one with the second sliding grooves 17 and are slidably connected.

[0051] The second limiting block 32 moves along the second slide groove 17, which facilitates the adjustment of the distance between the two hemispherical tamping plates 35. At the same time, the second limiting block 32 is located in the second slide groove 17, which enables the hemispherical tamping plates 35 to carry out tamping work stably.

[0052] The bottom surface of the hemispherical tamping plate 35 and the bottom surface of the flat tamping plate 25 are on the same plane.

[0053] In a further optimized design, the movable component includes a movable plate 4, with multiple rollers 41 fixedly connected to its bottom. The multiple rollers 41 facilitate movement.

[0054] A further optimized design includes cavities 18 symmetrically arranged within the top plate 1. Two cavities 18 are positioned on opposite sides of the two first sliders 2. A first bevel gear 46 is rotatably connected within each cavity 18, and the first bevel gear 46 meshes with a second bevel gear 47. A first transmission rod 45 is centrally connected to the first bevel gear 46. The two second bevel gears 47 are connected via a second transmission rod 48. Through the meshing of the first bevel gear 46 and the second bevel gear 47, and the connection of the two second bevel gears 47 via the second transmission rod 48, the rotation of any one of the first transmission rods 45 ensures that all first transmission rods 45, all first bevel gears 46, all second bevel gears 47, and the second transmission rod 48 move synchronously.

[0055] In a further optimized design, a screw 44 is fixedly connected to one end of the first transmission rod 45 that extends beyond the bottom surface of the top plate 1. A third threaded hole 43 is threadedly connected to the end of the screw 44 away from the first transmission rod 45. The third threaded hole 43 is located at the end of the movable plate 4 facing the top plate 1. Limiting rods 42 are respectively provided on both sides of the third threaded hole 43. One end of the limiting rod 42 is fixedly connected to the movable plate 4, and the other end of the limiting rod 42 is slidably connected to a third sliding groove, which is located on the bottom surface of the top plate 1.

[0056] The movable plate 4 will not rotate with the screw 44 as it rotates in the third threaded hole 43 and slides in the third groove through the two limit rods 42, so that the movable plate 4 can rise or fall stably.

[0057] In a further optimized design, a handwheel 49 is connected to one end of any first transmission rod 45 extending from the top surface of the top plate 1. The handwheel 49 drives the first transmission rod 45 to rotate, enabling all first transmission rods 45, all first bevel gears 46, all second bevel gears 47, and second transmission rods 48 to operate synchronously.

[0058] Work process:

[0059] By turning the handwheel 49, the movable plate 4 is lowered, causing the roller 41 to contact the ground and the flat tamping plate 25 and hemispherical tamping plate 35 to move away from the ground. The plate can then be moved by the roller 41 to the designated position. After reaching the designated position, the distance between the two hemispherical tamping plates 35 is adjusted according to the outer diameter of the ventilation pipe, so that the two hemispherical tamping plates 35 are on both sides of the ventilation pipe. Then, the distance between the two flat tamping plates 25 is adjusted to increase the compacted area. Next, by turning the handwheel 49, the movable plate 4 is raised, causing the roller 41 to move away from the ground and the flat tamping plate 25 and hemispherical tamping plate 35 to contact the ground to be compacted. Then, the vibrator 5 can be turned on to carry out the compaction operation.

[0060] To facilitate control of the two hemispherical tamping plates 35 during the compaction process, ensuring they are effectively positioned on both sides of the ventilation pipe, a ring is fitted around the top plate 1. The inner wall of the ring is fixedly connected to the outer wall of the top plate 1 via multiple connecting rods. By holding the ring, workers can easily control the compaction position during the compaction process.

[0061] 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.

[0062] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for compacting soil between ventilation duct foundation pipes, characterized in that: Includes a top plate (1), a vibrator (5) is fixedly connected to the center of the top surface of the top plate (1), a first sliding groove (11) is provided on the side wall of the top plate (1), a first compaction component and a second compaction component are slidably connected in the first sliding groove (11), and a moving component is symmetrically arranged below the top plate (1). The first compaction component and the second compaction component are arranged between the two moving components, and the two moving components are connected together to an adjustment component for controlling the lifting and lowering of the moving components. The adjustment component is arranged in the top plate (1). The first compaction component includes symmetrically arranged first sliders (2). The first sliders (2) drive the two first sliders (2) to move closer to each other or further away from each other along the first groove (11) through the first drive unit. The two ends of the first sliders (2) extending out of the first groove (11) are respectively fixedly connected to the flat compaction plate (25) through the first connecting plate (21). The second compaction component includes a second slider (3) symmetrically arranged between two first sliders (2). The second slider (3) is driven by a second drive unit to move closer or further away from each other along the first slide groove (11). The two ends of the second slider (3) extending out of the first slide groove (11) are respectively fixedly connected to a hemispherical compaction plate (35) by a second connecting plate (31). The flat tamping plate (25) and the hemispherical tamping plate (35) are located below the top plate (1).

2. The soil compaction device between ventilation duct foundation pipes according to claim 1, characterized in that: A support block (12) is fixedly connected to the middle part of the first groove (11).

3. The soil compaction device for the foundation pipe of the ventilation duct according to claim 2, characterized in that: The first drive unit includes a first lead screw (13) rotatably connected in the first slide groove (11), the first lead screw (13) being threadedly connected to the first slider (2), the first lead screw (13) passing through the second slider (3) and being slidably connected to the second slider (3), and the first lead screw (13) passing through the support block (12) and being rotatably connected to the support block (12).

4. The soil compaction device between ventilation duct foundation pipes according to claim 2, characterized in that: The second drive unit includes a second lead screw (15) rotatably connected in the first slide groove (11), the second lead screw (15) being threadedly connected to the second slider (3), the second lead screw (15) passing through the first slider (2) and being slidably connected to the first slider (2), and the second lead screw (15) passing through the support block (12) and being rotatably connected to the support block (12).

5. The soil compaction device for the foundation pipe of the ventilation duct according to claim 1, characterized in that: The flat tamping plate (25) is fixedly connected to a plurality of first limiting blocks (22) at one end facing the bottom surface of the top plate (1). The first limiting blocks (22) are slidably connected to a second sliding groove (17), which is opened on the bottom surface of the top plate (1).

6. The soil compaction device for the foundation pipe of the ventilation duct according to claim 5, characterized in that: The hemispherical ramming plate (35) is fixedly connected to a plurality of second limiting blocks (32) at one end facing the bottom surface of the top plate (1). The second limiting blocks (32) are correspondingly set and slidably connected to the second sliding groove (17).

7. The soil compaction device between ventilation duct foundation pipes according to claim 1, characterized in that: The moving component includes a movable plate (4), and a plurality of rollers (41) are fixedly connected to the bottom of the movable plate (4).

8. The soil compaction device between ventilation duct foundation pipes according to claim 7, characterized in that: The adjustment assembly includes cavities (18) symmetrically arranged in the top plate (1). The two cavities (18) are arranged on opposite sides of the two first sliders (2). A first bevel gear (46) is rotatably connected in the cavity (18). The first bevel gear (46) meshes with a second bevel gear (47). A first transmission rod (45) is connected to the center of the first bevel gear (46). The two second bevel gears (47) are connected by a second transmission rod (48).

9. The soil compaction device for the foundation pipe of the ventilation duct according to claim 8, characterized in that: The first transmission rod (45) is fixedly connected to a screw (44) at one end extending out of the bottom surface of the top plate (1). The screw (44) is threaded to a third threaded hole (43) at one end away from the first transmission rod (45). The third threaded hole (43) is opened at one end of the movable plate (4) facing the top plate (1). Limiting rods (42) are respectively provided on both sides of the third threaded hole (43). One end of the limiting rod (42) is fixedly connected to the movable plate (4), and the other end of the limiting rod (42) is slidably connected to a third sliding groove. The third sliding groove is opened on the bottom surface of the top plate (1).

10. The soil compaction device between ventilation duct foundation pipes according to claim 8, characterized in that: A handwheel (49) is connected to one end of any of the first transmission rods (45) that extends out of the top surface of the top plate (1).

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