Highway bridge roadbed tamping device

Abstract

The invention relates to the technical field of highway bridge construction, and discloses a highway bridge roadbed tamping device which comprises a mounting base, a horizontal plate and a plurality of tamping hammers arranged at intervals, the horizontal plate is fixedly connected with the horizontal end of the mounting base, the tamping hammers are all located below the horizontal plate, a sleeve is fixedly arranged at the top of each tamping hammer, and the sleeve is fixedly connected with the horizontal end of the mounting base. The upper end of the interior of the sleeve is slidably sleeved with a sleeve rod, the top of the sleeve rod is fixedly connected with the horizontal plate, the rod wall of the sleeve rod is sleeved with a spring, the two ends of the spring are fixedly connected with the sleeve and the horizontal plate respectively, two symmetrically-arranged connecting columns are fixedly arranged at the bottom of the horizontal plate, and a guide plate is fixedly arranged through the two connecting columns. According to the highway bridge roadbed tamping device, the surface of a roadbed can be continuously tamped, the existence of tamping blind areas is avoided as much as possible, meanwhile, the tamping efficiency can be adjusted according to the water content in the roadbed, marl vibrated in the tamping process can be fully collected, and it is guaranteed that the tamping environment is clean and tidy.

Description

Technical Field

[0001] The invention relates to the technical field of highway bridge construction, in particular to a highway bridge roadbed compacting device. Background Art

[0002] Compacting the roadbed can reduce the pores between the roadbed soil particles. Under natural conditions, the roadbed soil is relatively loose, and there are a large number of gaps between the soil particles. Through compaction, such as using equipment such as rollers to apply pressure, the soil particles can be rearranged and closer to each other.

[0003] After searching, the patent document with announcement number CN216947739U discloses an auxiliary construction device for roadbed and pavement of highway bridges. When the rotating shaft rotates, the device drives the rotating drum of the outer wall to rotate synchronously, and the bottom of the rotating drum is provided with an inclined rolling slope, which abuts against the outer wall of the rotating wheel. When the rotating drum continues to rotate, the rolling slope drives the extrusion rotating wheel, so that the rotating wheel reciprocates up and down while rotating on its own, and the rotating wheel is connected to the outer wall of the transmission rod, thereby driving the transmission rod to reciprocate with the support bearing as the center, thereby driving the movable rod and the tamping hammer to reciprocate in the vertical direction, which is convenient for compacting the roadbed. Through the transmission structure, the tamping hammer can reciprocate quickly and continuously, effectively improving work efficiency.

[0004] However, the above device has the following defects when used: First, because the compacting hammer performs vertical reciprocating motion during compaction, there is a gap between the two adjacent sides of the compacting hammer. At this time, the traveling machinery continues to move, resulting in a blind spot in the compaction work time on the two adjacent sides, which makes the overall compaction surface of the roadbed insufficient and the compaction effect poor. Secondly, since the roadbed is relatively dry overall, the gravity during the compaction work will vibrate the road surface mud, causing the mud to fly up and causing a poor environment within the working range; Finally, some roadbeds and pavements are relatively dry and have low water content, which results in greater friction between soil particles when the rammer falls, making it difficult to compact. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the shortcomings of the prior art, the present invention provides a highway bridge roadbed compaction device, which is capable of continuously compacting the roadbed surface and avoiding the existence of compaction blind spots as much as possible. At the same time, the compaction efficiency can be adjusted according to the water content inside the roadbed. The mud and ash vibrated up during the compaction process can also be fully collected to ensure a clean compaction environment. The device solves the problem that the compaction hammer performs reciprocating motion in the vertical direction during the compaction work, so that there is a gap between the falling of the compaction hammer on both sides. At this time, due to the continuous movement of the traveling machinery, there are blind spots in the compaction working time on both sides, which makes the overall compaction surface of the roadbed insufficient and the compaction effect poor.

[0006] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a road bridge subgrade compaction device, comprising a mounting seat, a horizontal plate and a plurality of compaction hammers arranged at intervals, wherein the horizontal plate is fixedly connected to the horizontal end of the mounting seat, the plurality of compaction hammers are all located below the horizontal plate, a sleeve is fixedly provided on the top of each compaction hammer, a sleeve rod is slidably sleeved on the inner upper end of the sleeve, the top of the sleeve rod is fixedly connected to the horizontal plate, a spring is sleeved on the rod wall of the sleeve rod, and the two ends of the spring are respectively fixedly connected to the sleeve and the horizontal plate; The bottom of the horizontal plate is fixed with two symmetrically arranged connecting columns, and a guide plate is fixedly arranged through the two connecting columns, and the outer wall of each sleeve is fixed with two symmetrically arranged thrust plates, and the lower part of the guide plate is rotatably penetrated with two symmetrically arranged driving shafts, and the shaft wall of the driving shaft is fixedly sleeved with a sprocket, and the outer wall of the sprocket is driven with a chain, and the outer side of the chain link of the chain is fixed with two symmetrically arranged push blocks, and the push blocks are in contact with and cooperate with the thrust plates; A dual-axis motor is fixedly provided on the back side of the guide plate, and an output shaft on one side of the dual-axis motor is fixedly connected to a driving shaft; The bottom of each tamping hammer is provided with a detection component for detecting the moisture content of the roadbed surface; A mounting plate is fixedly provided on the top of the horizontal plate, and a dust collecting and processing mechanism for collecting compacted dust is provided on the top of the horizontal plate; An auxiliary compacting mechanism for spraying is provided on the top of the horizontal plate.

[0007] Preferably, the detection assembly comprises a detection tube, the detection tube is fixedly arranged at the bottom of the tamping hammer, a receiving groove is provided at the bottom of the detection tube, and a water content sensor is fixedly embedded in the inner wall of the receiving groove.

[0008] Preferably, the dust collection and processing mechanism includes a collecting pipe, a vertical pipe is fixedly provided on the top of the horizontal plate, the collecting pipe is rotatably sleeved on the outer upper end of the vertical pipe, an exhaust fan is fixedly provided on the top of the horizontal plate, the air outlet of the exhaust fan is connected to an exhaust pipe, the air inlet end of the exhaust fan is connected to the lower end of the outer wall of the vertical pipe, and the lower end of the outer wall of the collecting pipe is provided with a swinging collection mechanism for driving the collecting pipe to swing.

[0009] Preferably, the swing collection mechanism comprises a reciprocating screw, a circular gear and a rack, the reciprocating screw is rotatably arranged in the mounting plate, the rack is threadedly sleeved with the reciprocating screw and is arranged in cooperation with the circular gear, and the circular gear is fixedly sleeved on the lower end of the outer wall of the collection pipe; A vertical rod is rotatably penetrated inside the horizontal plate, and a first bevel gear is fixedly provided at both ends of the vertical rod. The output shaft of the dual-axis motor and the end of the reciprocating screw rod are respectively fixedly sleeved with a second bevel gear and a third bevel gear, and the two first bevel gears are respectively matched with the second bevel gear and the third bevel gear.

[0010] Preferably, the auxiliary compaction mechanism includes a water supply tank and a liquid supply pump, the water supply tank is fixedly arranged on the top of the horizontal plate, the liquid supply pump is located at the lower end of the water supply tank and is fixedly connected to the horizontal plate, the liquid inlet end of the liquid supply pump is connected to the water supply tank, the liquid inlet end of the liquid supply pump is connected to two symmetrically arranged liquid outlet pipes, a PLC controller is fixedly arranged on the top of the horizontal plate, and the PLC controller is electrically connected and cooperated with the liquid supply pump and the dual-axis motor.

[0011] Preferably, a strip-shaped hole is opened inside the rack, a limit plate is slidably penetrated through the strip-shaped hole, and the limit plate is fixedly connected to the top of the horizontal plate.

[0012] Preferably, a plurality of guide grooves arranged at intervals are provided on the top of the guide plate, and the push plate is slidably arranged in the guide grooves.

[0013] Preferably, a dust screen is embedded in the inner upper end of the exhaust duct, and positioning bolts are threadedly penetrated through the outer wall of the exhaust duct and the side of the dust screen.

[0014] (III) Beneficial effects Compared with the prior art, the present invention provides a highway bridge subgrade compaction device, which has the following beneficial effects: 1. By providing multiple tamping hammers, sleeves, sleeve rods, springs, guide plates, push plates, dual-axis motors, drive shafts, sprockets, chains and push blocks, multiple tamping hammers are arranged so that after the push blocks push the multiple push plates, multiple tamping hammers fall down in sequence to compact the roadbed, thereby ensuring the continuity of compaction and avoiding the occurrence of compaction blind spots as much as possible, thereby improving the compaction effect.

[0015] 2. Through the tamping hammer, detection assembly and auxiliary tamping mechanism, when the tamping hammer falls, the detection tube is inserted into the roadbed to detect the water content inside the roadbed. The speed of the dual-axis motor is controlled according to the water content to control the tamping rate. At the same time, the roadbed can be effectively sprayed to ensure that the water content inside the roadbed is always constant.

[0016] 3. Through the installation plate, dust collection and treatment mechanism and swing collection mechanism, the dust raised by vibration can be quickly collected and treated through the exhaust fan and the inside of the collection pipe while the compacting hammer hits the surface of the roadbed, ensuring a clean environment within a certain range during the compaction process and improving the use effect of the compaction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a highway bridge subgrade compaction device proposed by the present invention; Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the tamping hammer, sleeve, sleeve rod, spring and guide plate in the present invention; Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure of the central exhaust fan and the exhaust duct; Figure 5 for Figure 1 Schematic diagram of the three-dimensional structure of the auxiliary compaction mechanism; Figure 6 for Figure 1 Schematic diagram of the three-dimensional structure of the detection component.

[0018] In the figure: 1 mounting seat, 2 horizontal plate, 3 tamping hammer, 4 sleeve, 5 sleeve rod, 6 spring, 7 connecting column, 8 guide plate, 9 push plate, 10 driving shaft, 11 sprocket, 12 chain, 13 push block, 14 dual-axis motor, 15 mounting plate, 16 detection tube, 17 moisture content sensor, 18 collecting tube, 19 vertical pipe, 20 exhaust fan, 21 exhaust duct, 22 reciprocating screw rod, 23 circular gear, 24 rack, 25 vertical rod, 26 first bevel gear, 27 second bevel gear, 28 third bevel gear, 29 water supply tank, 30 liquid supply pump, 31 liquid outlet pipe, 32 PLC controller, 33 limit plate, 34 dust screen, 35 positioning bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without creative work are all within the scope of protection of the present invention.

[0020] See also Figure 1-6 A roadbed compaction device for a highway bridge comprises a mounting seat 1, a horizontal plate 2 and a plurality of compaction hammers 3 arranged at intervals, a detection assembly for detecting the water content of the roadbed surface is provided at the bottom of each compaction hammer 3, the detection assembly comprises a detection tube 16, the detection tube 16 is fixedly arranged at the bottom of the compaction hammer 3, a receiving groove is provided at the bottom of the detection tube 16, a water content sensor 17 is fixedly embedded in the inner wall of the receiving groove, the horizontal plate 2 is fixedly connected to the horizontal end of the mounting seat 1, a plurality of compaction hammers 3 are all located below the horizontal plate 2, a sleeve 4 is fixedly provided at the top of each compaction hammer 3, a sleeve rod 5 is slidably sleeved at the inner upper end of the sleeve 4, the top of the sleeve rod 5 is fixedly connected to the horizontal plate 2, a spring 6 is sleeved on the rod wall of the sleeve rod 5, and the two ends of the spring 6 are respectively fixedly connected to the sleeve 4 and the horizontal plate 2; Two symmetrically arranged connecting columns 7 are fixedly provided at the bottom of the horizontal plate 2, and a guide plate 8 is fixedly provided through the two connecting columns 7. Two symmetrically arranged thrust plates 9 are fixedly provided on the outer wall of each sleeve 4. A plurality of guide grooves arranged at intervals are opened on the top of the guide plate 8. The thrust plates 9 are slidably arranged in the guide grooves. Two symmetrically arranged driving shafts 10 are rotatably penetrated at the lower part of the guide plate 8. A sprocket 11 is fixedly sleeved on the shaft wall of the driving shaft 10. A chain 12 is transmitted on the outer wall of the sprocket 11. Two symmetrically arranged push blocks 13 are fixedly provided on the outer side of the chain links of the chain 12. The push blocks 13 are in contact and cooperate with the thrust plates 9. A dual-axis motor 14 is fixedly provided on the back side of the guide plate 8. One side output shaft of the dual-axis motor 14 is fixedly connected to the driving shaft 10.

[0021] Before compacting the roadbed, the entire device is installed on a mobile machine through the mounting base 1 so that the entire device can be moved. Then the device is moved to the surface of the roadbed to be compacted, and the dual-axis motor 14 is started so that the dual-axis motor 14 can drive the drive shaft 10 to rotate. Under the driving action of the drive shaft 10, the chain 12 rotates stably through the transmission of the sprocket 11. Since the two push blocks 13 are symmetrically arranged and the multiple tamping hammers 3 are arranged in an array, the push blocks 13 can continue to push the second pushed plate 9 after pushing the first pushed plate 9. At this time, the previous tamping hammer 3 is squeezed and rebounded by the spring 6 through the movement of the sleeve 4 and the sleeve rod 5 to compact the roadbed, and the next tamping hammer 3 immediately performs the compaction work, so that the multiple tamping hammers 3 can continuously and quickly compact the roadbed to avoid the occurrence of compaction blind areas as much as possible. At the same time, during the compaction process, after the compaction hammer 3 contacts the ground, the detection tube 16 drives the moisture content sensor 17 to be inserted into the ground, so as to detect the moisture content of the surface layer of the roadbed. When the moisture content is large, the rotation speed of the dual-axis motor 14 is increased, so that the pushing rate of the push block 13 is increased. At this time, the working intervals of multiple compaction hammers 3 are shortened, and the compaction rate is increased. When the moisture content is small, the compaction rate of the compaction hammer 3 is slowed down to ensure the compaction effect.

[0022] In order to effectively collect the dust generated during the compaction process and ensure a clean compaction environment, Figure 1-2 and Figure 4 As shown, a mounting plate 15 is fixedly provided on the top of the horizontal plate 2, a dust collecting and processing mechanism for collecting compacted dust is provided on the top of the horizontal plate 2, the dust collecting and processing mechanism includes a collecting pipe 18, a vertical pipe 19 is fixedly provided on the top of the horizontal plate 2, the collecting pipe 18 is rotatably sleeved on the outer upper end of the vertical pipe 19, an exhaust fan 20 is fixedly provided on the top of the horizontal plate 2, an exhaust pipe 21 is connected to the air outlet of the exhaust fan 20, an air inlet end of the exhaust fan 20 is connected to the lower end of the outer wall of the vertical pipe 19, a dust shielding net 34 is embedded in the inner upper end of the exhaust pipe 21, and positioning bolts 35 are threadedly penetrated on the outer wall of the exhaust pipe 21 and the side of the dust shielding net 34, and a swinging collection mechanism for driving the collecting pipe 18 to swing is provided at the lower end of the outer wall of the collecting pipe 18; The swing collection mechanism includes a reciprocating screw rod 22, a circular gear 23 and a rack 24. The reciprocating screw rod 22 is rotatably arranged in the mounting plate 15. The rack 24 is threadedly sleeved with the reciprocating screw rod 22 and is arranged in cooperation with the circular gear 23. The circular gear 23 is fixedly sleeved on the lower end of the outer wall of the collection pipe 18. A strip hole is opened inside the rack 24. A limit plate 33 is slidably penetrated in the strip hole. The limit plate 33 is fixedly connected to the top of the horizontal plate 2. A vertical rod 25 is rotatably penetrated inside the horizontal plate 2, and first bevel gears 26 are fixedly provided at both ends of the vertical rod 25. The output shaft of the dual-axis motor 14 and the end of the reciprocating screw rod 22 are respectively fixedly sleeved with a second bevel gear 27 and a third bevel gear 28. The two first bevel gears 26 are respectively matched with the second bevel gear 27 and the third bevel gear 28.

[0023] During the compaction process, through the control of the dual-axis motor 14, the second bevel gear 27 is meshed with the third bevel gear 28 below, so that the vertical rod 25 rotates. At this time, the first bevel gear 26 and the third bevel gear 28 above are meshed, driving the reciprocating screw 22 to rotate, so that the rack 24 moves back and forth under the sliding cooperation of the bar hole and the limit plate 33, and through the cooperation with the circular gear 23, the collecting pipe 18 is made to swing back and forth. At the same time, the exhaust fan 20 is started, and the external dust can be quickly sucked with the help of the collecting pipe 18 and the vertical pipe 19, and the dust can be effectively collected through the obstruction of the dust shield 34. After the compaction work is completed, the positioning bolt 35 can be removed and the dust shield 34 can be disassembled and cleaned.

[0024] In order to effectively control the water content inside the roadbed and ensure the compaction effect, Figure 1 and Figure 5As shown, the top of the horizontal plate 2 is provided with an auxiliary compacting mechanism for spraying, and the auxiliary compacting mechanism includes a water supply tank 29 and a liquid supply pump 30. The water supply tank 29 is fixedly arranged on the top of the horizontal plate 2, and the liquid supply pump 30 is located at the lower end of the water supply tank 29 and is fixedly connected to the horizontal plate 2. The liquid inlet end of the liquid supply pump 30 is connected to the water supply tank 29, and the liquid inlet end of the liquid supply pump 30 is connected to two symmetrically arranged liquid outlet pipes 31. A PLC controller 32 is fixedly arranged on the top of the horizontal plate 2, and the PLC controller 32 is electrically connected and cooperated with the liquid supply pump 30 and the dual-axis motor 14.

[0025] During the compaction process, when the moisture content sensor 17 detects that the moisture content is low, a signal can be transmitted to the PLC controller 32 to control the start of the liquid supply pump 30, so that the liquid supply pump 30 sucks the water in the water supply tank 29 and discharges it through the two liquid outlet pipes 31, effectively spraying the roadbed to control the moisture content, and the PLC controller 32 can also control the dual-axis motor 14 to adjust the compaction rate.

[0026] In summary, the roadbed compaction device for the highway bridge is installed on a mobile machine through the mounting seat 1 before compacting the roadbed, so that the device as a whole can be moved, and then the device is moved to the roadbed surface to be compacted, and the dual-axis motor 14 is started, so that the dual-axis motor 14 can drive the driving shaft 10 to rotate, and under the driving action of the driving shaft 10, the chain 12 rotates stably through the transmission of the sprocket 11, because the two push blocks 13 are symmetrically arranged, and the multiple compaction hammers 3 are arranged in an array, so that the push blocks 13 can continue to push the second pushed plate 9 after pushing the first pushed plate 9, at this time, the previous compaction hammer 3 is squeezed and rebounded by the spring 6 through the movement of the sleeve 4 and the sleeve rod 5 to compact the roadbed, and the next compaction hammer 3 immediately performs the compaction work, so that the multiple compaction hammers 3 can continuously and quickly compact the roadbed, and try to avoid the occurrence of compaction blind spots; At the same time, during the compaction process, after the compaction hammer 3 contacts the ground, the detection tube 16 drives the moisture content sensor 17 to be inserted into the ground, so as to detect the moisture content of the surface layer of the roadbed. When the moisture content is high, the rotation speed of the dual-axis motor 14 is increased, so that the pushing rate of the push block 13 is increased. At this time, the working intervals of multiple compaction hammers 3 are shortened, and the compaction rate is increased. When the moisture content is low, the compaction rate of the compaction hammer 3 is slowed down to ensure the compaction effect. When the moisture content sensor 17 detects that the moisture content is low, a signal can be transmitted to the PLC controller 32 to control the start of the liquid supply pump 30, so that the liquid supply pump 30 sucks the water in the water supply tank 29 and discharges it through the two liquid outlet pipes 31, effectively spraying the roadbed to control the moisture content, and the PLC controller 32 can also control the dual-axis motor 14 to adjust the compaction rate; During the compaction process, if there is a lot of dust, the second bevel gear 27 is controlled by the dual-axis motor 14 to mesh with the third bevel gear 28 below, so that the vertical rod 25 rotates. At this time, the first bevel gear 26 and the third bevel gear 28 above are meshed, driving the reciprocating screw 22 to rotate, so that the rack 24 moves back and forth under the sliding cooperation of the bar hole and the limit plate 33, and through the cooperation with the circular gear 23, the collecting pipe 18 swings back and forth. At the same time, the exhaust fan 20 is started, and the external dust can be quickly sucked out with the help of the collecting pipe 18 and the vertical pipe 19, and the dust can be effectively collected through the obstruction of the dust shield 34. After the compaction work is completed, the positioning bolt 35 can be removed and the dust shield 34 can be disassembled and cleaned.

[0027] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A road bridge subgrade compaction device, comprising a mounting base (1), a horizontal plate (2) and a plurality of compaction hammers (3) arranged at intervals, characterized in that: The horizontal plate (2) is fixedly connected to the horizontal end of the mounting seat (1); the plurality of tamping hammers (3) are located below the horizontal plate (2); a sleeve (4) is fixedly provided on the top of each tamping hammer (3); a sleeve rod (5) is slidably sleeved on the inner upper end of the sleeve rod (4); the top of the sleeve rod (5) is fixedly connected to the horizontal plate (2); a spring (6) is sleeved on the rod wall of the sleeve rod (5); and the two ends of the spring (6) are respectively fixedly connected to the sleeve rod (4) and the horizontal plate (2); Two symmetrically arranged connecting columns (7) are fixedly provided at the bottom of the horizontal plate (2), and a guide plate (8) is fixedly provided through the two connecting columns (7); two symmetrically arranged push plates (9) are fixedly provided on the outer wall of each sleeve (4); two symmetrically arranged drive shafts (10) are rotatably passed through the lower part of the guide plate (8); a sprocket (11) is fixedly sleeved on the shaft wall of the drive shaft (10); a chain (12) is provided on the outer wall of the sprocket (11); two symmetrically arranged push blocks (13) are fixedly provided on the outer side of the chain links of the chain (12); the push blocks (13) are in contact with and cooperate with the push plates (9); A dual-axis motor (14) is fixedly provided on the back side of the guide plate (8), and an output shaft on one side of the dual-axis motor (14) is fixedly connected to the drive shaft (10); The bottom of each tamping hammer (3) is provided with a detection component for detecting the moisture content of the roadbed surface; A mounting plate (15) is fixedly provided on the top of the horizontal plate (2), and a dust collection and processing mechanism for collecting compacted dust is provided on the top of the horizontal plate (2); An auxiliary compacting mechanism for spraying is provided on the top of the horizontal plate (2).

2. A road bridge subgrade compaction device according to claim 1, characterized in that: The detection assembly comprises a detection tube (16), wherein the detection tube (16) is fixedly arranged at the bottom of the tamping hammer (3), a receiving groove is provided at the bottom of the detection tube (16), and a water content sensor (17) is fixedly embedded in the inner wall of the receiving groove.

3. A road bridge subgrade compaction device according to claim 1, characterized in that: The dust collection and treatment mechanism comprises a collection pipe (18), a vertical pipe (19) is fixedly provided on the top of the horizontal plate (2), the collection pipe (18) is rotatably sleeved on the outer upper end of the vertical pipe (19), an exhaust fan (20) is fixedly provided on the top of the horizontal plate (2), an air outlet of the exhaust fan (20) is connected to an exhaust pipe (21), an air inlet end of the exhaust fan (20) is connected to the lower end of the outer wall of the vertical pipe (19), and a swing collection mechanism for driving the collection pipe (18) to swing is provided at the lower end of the outer wall of the collection pipe (18).

4. A road bridge subgrade compaction device according to claim 3, characterized in that: The swing collection mechanism comprises a reciprocating screw (22), a circular gear (23) and a rack (24); the reciprocating screw (22) is rotatably arranged in the mounting plate (15); the rack (24) is threadedly sleeved with the reciprocating screw (22) and is arranged in cooperation with the circular gear (23); the circular gear (23) is fixedly sleeved on the lower end of the outer wall of the collection pipe (18); A vertical rod (25) is rotatably penetrated inside the horizontal plate (2), and first bevel gears (26) are fixedly provided at both ends of the vertical rod (25). A second bevel gear (27) and a third bevel gear (28) are fixedly provided at the output shaft of the dual-axis motor (14) and the end of the reciprocating screw rod (22), respectively. The two first bevel gears (26) are respectively matched with the second bevel gear (27) and the third bevel gear (28).

5. The highway bridge subgrade compacting device according to claim 1, characterized in that: The auxiliary compaction mechanism comprises a water supply tank (29) and a liquid supply pump (30), wherein the water supply tank (29) is fixedly arranged on the top of the horizontal plate (2), the liquid supply pump (30) is located at the lower end of the water supply tank (29) and is fixedly connected to the horizontal plate (2), the liquid inlet end of the liquid supply pump (30) is connected to the water supply tank (29), the liquid inlet end of the liquid supply pump (30) is connected to two symmetrically arranged liquid outlet pipes (31), and a PLC controller (32) is fixedly arranged on the top of the horizontal plate (2), and the PLC controller (32) is electrically connected to and cooperates with the liquid supply pump (30) and the dual-axis motor (14).

6. A road bridge subgrade compaction device according to claim 4, characterized in that: A strip-shaped hole is provided inside the rack (24), a limit plate (33) is slidably inserted into the strip-shaped hole, and the limit plate (33) is fixedly connected to the top of the horizontal plate (2).

7. A road bridge subgrade compaction device according to claim 1, characterized in that: The top of the guide plate (8) is provided with a plurality of guide grooves arranged at intervals, and the push plate (9) is slidably arranged in the guide grooves.

8. A highway bridge subgrade compaction device according to claim 3, characterized in that: A dust screen (34) is embedded in the upper inner end of the exhaust pipe (21), and positioning bolts (35) are threadedly penetrated through the outer wall of the exhaust pipe (21) and the side of the dust screen (34).

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