A roadbed tamper

Abstract

This utility model discloses a roadbed compaction machine, including a compaction chamber. The lower end of the compaction chamber is connected to a compaction plate by evenly distributed bolts. It also includes a support mechanism. The support mechanism includes a square sliding plate, shock absorbers, a spring, a support frame, moving wheels, and a support base. The square sliding plate is slidably connected to the middle of the outer surface of the compaction chamber. Evenly distributed ribs are fixedly connected to the middle of the outer surface of the compaction chamber. Evenly distributed rib grooves are provided inside the square sliding plate, and each rib groove is slidably connected to an adjacent rib. Evenly distributed shock absorbers are fixedly connected to both the front and rear ends of the lower surface of the square sliding plate. The lower ends of the piston rods of three longitudinally adjacent shock absorbers are fixedly connected to the upper end of the same support frame. This roadbed compaction machine can realize the retraction and release of the moving wheels and support base, facilitating the movement of the compaction chamber and stable support.

Description

Technical Field

[0001] This utility model relates to the field of compaction machine technology, specifically a roadbed compaction machine. Background Technology

[0002] In the process of road construction, the roadbed compactor is an important piece of engineering equipment. The roadbed compactor is an engineering equipment that uses instantaneous high-intensity impact energy to rearrange soil or filler particles, remove air and moisture, thereby improving compaction and bearing capacity. In the prior art, patent CN218466263U discloses a roadbed high-strength compactor, including: a fixed plate, fixedly installed on the outer surface of the compactor; and a support plate, disposed on the lower surface of the fixed plate, wherein there are one or more support plates. When there is one support plate, one side of the compactor is connected to the vehicle body, and the support plate and the side of the compactor are located on the same side. When there are multiple support plates, the support plates are evenly distributed on the circumference of the fixed plate, which avoids the compactor tilting during use, thus preventing the road surface from being affected in terms of firmness and flatness. This type of roadbed high-strength compactor has some problems. For example, the support base cannot be fully retracted, and it lacks a mobile auxiliary unit. Multiple adjustments are required from the drive arm of an external engineering vehicle to move the compaction chamber, which affects the ease of movement and support of the roadbed high-strength compactor. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a roadbed compactor that can realize the retraction and release of the moving wheels and support base, which facilitates the movement and stable support of the compaction chamber and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a roadbed compaction machine, including a compaction chamber, the lower end of which is connected to a compaction plate by evenly distributed bolts, and a support mechanism; Support mechanism: It includes a square sliding plate, shock absorbers, spring 1, support frame, moving wheels, and support seats. The square sliding plate is slidably connected to the middle of the outer surface of the compaction chamber. Evenly distributed ribs are fixedly connected to the middle of the outer surface of the compaction chamber. Evenly distributed rib grooves are provided inside the square sliding plate, and the rib grooves are slidably connected to adjacent ribs. Evenly distributed shock absorbers are fixedly connected to the front and rear ends of the lower surface of the square sliding plate. The lower ends of the piston rods of three longitudinally adjacent shock absorbers are fixedly connected to the upper end of the same support frame. Evenly distributed spring 1 is provided between the upper end of the support frame and the square sliding plate. Spring 1 is sleeved on the outer surface of adjacent shock absorbers. Symmetrically distributed moving wheels are provided at the lower end of the support frame. Adjustable support seats are provided at the front and rear ends of the lower surface of the support frame, which can realize the contraction and release of the moving wheels and support seats, facilitating the movement and stable support of the compaction chamber.

[0005] Furthermore, the support mechanism also includes screws and handwheels. The screws are threaded to the front and rear ends of the support frame, respectively. The lower ends of the screws are fixedly connected to the upper ends of the vertically adjacent support seats. The upper ends of the screws are fixedly connected to handwheels. Corrugated pipes are provided between the lower surface of the handwheel and the upper surface of the support frame, as well as between the lower surface of the support frame and the upper surface of the support seat. The corrugated pipes are sleeved on the outer surfaces of the adjacent screws to realize the height adjustment of the support seats.

[0006] Furthermore, the support mechanism also includes a hydraulic push rod, which is located at the front end of the compaction chamber. The lower end of the piston rod of the hydraulic push rod is fixedly connected to the front end of the upper surface of the square sliding plate. A bellows is provided between the front end of the upper surface of the square sliding plate and the front end of the compaction chamber. The bellows is fitted onto the outer surface of the piston rod of the hydraulic push rod. The hydraulic port of the hydraulic push rod is connected to the oil port of an external vehicle-mounted hydraulic pump through a conduit, providing driving force for the vertical movement of the square sliding plate.

[0007] Furthermore, a fixed plate is fixedly connected to the center of the compaction chamber. Sliding rods are slidably connected to both the front and rear ends of the fixed plate. The lower ends of the two sliding rods are fixedly connected to the upper end of the compaction hammer, and the upper ends of the two sliding rods are fixedly connected to the connecting ring. The front and rear ends of the lower surface of the fixed plate and the front and rear ends of the upper surface of the compaction hammer are connected to connecting seats by evenly distributed bolts. A spring is fixedly connected between two vertically adjacent connecting seats to provide impact force for the compaction plate to pound the roadbed.

[0008] Furthermore, a drive chamber is provided at the upper end of the compaction chamber, and a hydraulic push rod is provided at the bottom of the drive chamber. A lifting rod is fixedly connected to the middle of the upper surface of the compaction hammer. The lifting rod passes through the interior of the fixed plate. The lower end of the piston rod of the hydraulic push rod is connected to the upper end of the lifting rod through evenly distributed bolts. The hydraulic port of the hydraulic push rod is connected to the oil port of the external vehicle-mounted hydraulic pump through the conduit, so as to realize the vertical movement of the compaction hammer.

[0009] Furthermore, the upper end of the drive chamber is connected to a closed cover by four evenly distributed bolts, which controls the opening and closing of the drive chamber and facilitates the maintenance of the hydraulic push rod two.

[0010] Furthermore, a connecting plate is fixedly connected to the middle of the rear side of the compaction chamber to facilitate the connection between the compactor and external engineering vehicles.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This roadbed compactor has the following advantages: The extension and retraction of the moving wheel and support base are achieved by the extension and retraction of the hydraulic push rod and piston rod. Then, the vertical movement of the support base is controlled by the screw, so that the support base replaces the moving wheel to provide stable support for the compaction chamber. This facilitates the movement of the compaction chamber by personnel and provides stable support. At the same time, the shock absorber can effectively improve the shock absorption performance of the compaction chamber itself. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the internal structure of this utility model; Figure 3 This is a schematic diagram of the rear structure of this utility model; Figure 4 This is a schematic diagram of the support mechanism of this utility model.

[0013] In the diagram: 1. Compactor chamber, 2. Fixed plate, 3. Drive chamber, 4. Support mechanism, 41. Square sliding plate, 42. Shock absorber, 43. Spring 1, 44. Support frame, 45. Moving wheel, 46. Screw, 47. Support seat, 48. Handwheel, 49. Hydraulic push rod 1, 5. Compactor hammer, 6. Lifting rod, 7. Slide rod, 8. Connecting ring, 9. Connecting seat, 10. Spring 2, 11. Hydraulic push rod 2, 12. Sealing cover, 13. Compactor plate, 14. Corrugated pipe 1, 15. Corrugated pipe 2, 16. Connecting plate, 17. Rib. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This embodiment provides a technical solution: a roadbed compaction machine, including a compaction chamber 1, the lower end of the compaction chamber 1 is connected to a compaction plate 13 by evenly distributed bolts, and also includes a support mechanism 4; Support mechanism 4 includes a square sliding plate 41, a shock absorber 42, a spring 43, a support frame 44, a moving wheel 45, and a support base 47. The square sliding plate 41 is slidably connected to the middle of the outer surface of the compaction chamber 1. Evenly distributed ribs 17 are fixedly connected to the middle of the outer surface of the compaction chamber 1. Evenly distributed rib grooves are provided inside the square sliding plate 41, and each rib groove is slidably connected to an adjacent rib 17. Evenly distributed shock absorbers 42 are fixedly connected to both the front and rear ends of the lower surface of the square sliding plate 41. The lower ends of the piston rods of three longitudinally adjacent shock absorbers 42 are fixedly connected to the upper end of the same support frame 44. Evenly distributed springs 43 are provided between the upper end of the support frame 44 and the square sliding plate 41. Each spring 43 is fitted with... Located on the outer surface of the adjacent damper 42, the elastic force of spring 43 assists in the reset of the support frame 44 during the vibration of the compaction chamber 1. (Both upper and lower pins of spring 43 are fixedly connected to fixing rings. The upper fixing rings are connected to the lower end of the square sliding plate 41 by screws, and the lower fixing rings are connected to the upper end of the adjacent support frame 44 by screws. Periodically, the bolts between the lower end of the piston rod of the damper 42 and the upper end of the adjacent support frame 44 are removed, and then the support frame 44 is dismantled and the screws are removed to end the limiting of spring 43. The old spring 43 is removed, and the new spring 43 is reconnected to the fixing rings by screws to prevent the spring 43 from aging.) The lower end is provided with symmetrically distributed movable wheels 45. Adjustable support seats 47 are provided at both the front and rear ends of the lower surface of the support frame 44. The support mechanism 4 also includes screws 46 and handwheels 48. The screws 46 are threaded to the front and rear ends of the support frame 44 respectively. The lower ends of the screws 46 are fixedly connected to the upper ends of the vertically adjacent support seats 47. Handwheels 48 are fixedly connected to the upper ends of the screws 46. Corrugated pipes 15 are provided between the lower surface of the handwheels 48 and the upper surface of the support frame 44, and between the lower surface of the support frame 44 and the upper surface of the support seats 47. Corrugated pipes 15 are sleeved on the outer surface of adjacent screws 46. (The upper ends of the upper corrugated pipes 15 are fixedly connected to the lower ends of the adjacent handwheels 48, and the lower ends of the upper corrugated pipes 15 are...) The upper surface of the adjacent support frame 44 is rotatably connected to the upper surface of the adjacent support base 47 via a rotating ring. The lower end of the lower bellows 15 is fixedly connected to the upper end of the adjacent support base 47, and the upper end of the lower bellows 15 is rotatably connected to the lower surface of the adjacent support frame 44 via a rotating ring. During the rotation of the screw 46, the bellows 15 will not rotate with it, thus avoiding the bellows 15 affecting the rotation of the screw 46. At the same time, during the movement of the handwheel 48 and the support base 47, the bellows 15 will extend or retract to achieve sealing protection for the screw 46. The support mechanism 4 also includes a hydraulic push rod 49, which is located at the front end of the compaction chamber 1. The lower end of the piston rod of the hydraulic push rod 49 is fixedly connected to the front end of the upper surface of the square sliding plate 41.A bellows-14 is installed between the front end of the upper surface of the square sliding plate 41 and the front end of the compaction chamber 1. The bellows-14 is sleeved on the outer surface of the piston rod of the hydraulic push rod 49. (The upper end of the bellows-14 is fixedly connected to the front end of the compaction chamber 1, and the lower end of the bellows-14 is fixedly connected to the front end of the upper surface of the square sliding plate 41. The bellows-14 provides sealing protection for the piston rod of the hydraulic push rod 49.) The hydraulic port of the hydraulic push rod 49 is connected to the oil port of the external vehicle-mounted hydraulic pump through a conduit. When the compaction plate 13 moves to the designated area, the movement of the external engineering vehicle stops, thereby stopping the movement of the compaction chamber 1. Then, the external vehicle-mounted hydraulic pump pumps the hydraulic push rod through the conduit. The extraction of oil from inside hydraulic push rod 49 causes the piston rod of hydraulic push rod 49 to retract, thereby moving the square sliding plate 41 upward. Ribs 17 slide relative to adjacent rib grooves inside the square sliding plate 41, providing sliding support for the square sliding plate 41 and preventing deformation of the piston rod of hydraulic push rod 49 due to radial force. Under the guidance and limiting effect of the vertical movement of the square sliding plate 41, the upward movement of the square sliding plate 41 causes the shock absorber 42 to move upward, which in turn causes the two support frames 44 to move upward, ultimately causing the moving wheel 45 to move upward. When the compaction plate 13 replaces the moving wheel 45 to achieve stable support for the compaction chamber 1, the external vehicle-mounted hydraulic pump stops extracting oil from inside hydraulic push rod 49. When the roadbed compaction in this area is completed, the external vehicle-mounted hydraulic pump stops the operation of hydraulic push rod 2 11 and starts hydraulic push rod 1 49. The piston rod of hydraulic push rod 1 49 extends and pushes the square sliding plate 41 downward, which in turn causes the moving wheels 45 to move downward. This allows the four moving wheels 45 to replace the compaction plate 13, realizing the movement of the compaction chamber 1. Then, the movement of the external engineering vehicle drives the movement of the compaction chamber 1, realizing the movement of the compaction plate 13, and carrying out the compaction work in the lowered area. When the roadbed compaction work is completely completed, the external vehicle-mounted hydraulic pump first starts the operation of hydraulic push rod 1 49, so that the moving wheels 45 can provide stable support for the compaction chamber 1. Then, the external vehicle-mounted hydraulic pump... Close the hydraulic push rod 49, and turn the handwheel 48 in sequence. The rotation of the handwheel 48 drives the adjacent screw 46 to rotate. Since the screws 46 are all threadedly connected to the adjacent support frames 44, the screws 46 move downwards during rotation, thereby pushing the support seats 47 downwards. The support seats 47 make stable contact with the ground. The four support seats 47 provide stable support for the compaction chamber 1, while preventing the moving wheels 45 from rolling and causing the compaction chamber 1 to move. If the compaction chamber 1 vibrates during the support process of the support seats 47, the piston rod of the shock absorber 42 contracts inwards and squeezes the hydraulic oil, converting the mechanical energy of the vibration into heat, thereby effectively absorbing the vibration energy and improving the shock absorption performance of the compaction chamber 1 during storage. The compaction chamber 1 is internally fixedly connected to a fixed plate 2 in the middle. Sliding rods 7 are slidably connected to both the front and rear ends of the fixed plate 2. The lower ends of both sliding rods 7 are fixedly connected to the upper ends of the compaction hammer 5, and the upper ends of both sliding rods 7 are fixedly connected to connecting rings 8. Connecting seats 9 are connected to the front and rear ends of the lower surface of the fixed plate 2 and the front and rear ends of the upper surface of the compaction hammer 5 by evenly distributed bolts. Springs 10 are fixedly connected between two vertically adjacent connecting seats 9. The upper pins of springs 10 are fixedly connected to the lower ends of the adjacent upper connecting seats 9, and the lower pins of springs 10 are fixedly connected to the upper ends of the adjacent lower connecting seats 9. During the movement of the tamping hammer 5, the second spring 10 extends or retracts accordingly, providing assistance for the movement of the tamping hammer 5. Periodically, the second bolt is removed, followed by the removal of the connecting seat 9, and the second spring 10 is disassembled. Then, the new connecting seat 9 and the second spring 10 are installed between the fixed plate 2 and the tamping hammer 5. The upper end of the tamping chamber 1 is equipped with a drive chamber 3, and the upper end of the drive chamber 3 is connected to a sealing cover 12 by evenly distributed bolts 4. The bottom of the drive chamber 3 is equipped with a hydraulic push rod 11. A lifting rod 6 is fixedly connected to the middle of the upper surface of the tamping hammer 5, and the lifting rod 6 penetrates the interior of the fixed plate 2. The lower end of the piston rod of the hydraulic push rod 11 is connected via… Evenly distributed bolts three are connected to the upper end of the lifting rod 6. The hydraulic port of the hydraulic push rod two 11 is connected to the oil port of the external vehicle-mounted hydraulic pump through the conduit two. The external vehicle-mounted hydraulic pump pumps oil into the hydraulic push rod two 11 through the conduit two, causing the piston rod of the hydraulic push rod two 11 to extend, thereby pushing the lifting rod 6 downward. The downward movement of the lifting rod 6 drives the compaction hammer 5 downward. At the same time, the sliding rods 7 slide inside their corresponding sliding ports to prevent the piston rod of the hydraulic push rod two 11 from being deformed by radial force. This provides guidance and limitation for the vertical movement of the compaction hammer 5. Under the linkage action of the connecting ring 8, the two sliding rods 7 slide synchronously, maintaining the vertical movement of the compaction hammer 5. For stability, the tamping hammer 5 moves downward to strike the upper end of the tamping plate 13. The tamping plate 13 then diffuses the single-point impact onto the roadbed surface in a planar manner, thereby achieving the roadbed compaction work. After the tamping hammer 5 finishes striking, the external vehicle-mounted hydraulic pump extracts the oil from the hydraulic push rod 11 through the second conduit, causing the piston rod of the hydraulic push rod 11 to retract. This, in turn, drives the tamping hammer 5 upward through the lifting rod 6. When the tamping hammer 5 reaches the designated height, the external vehicle-mounted hydraulic pump pumps oil back into the hydraulic push rod 11 through the second conduit, thus achieving continuous striking of the tamping plate 13 by the tamping hammer 5 and ensuring the continuous progress of the roadbed compaction work. Among them, a connecting plate 16 is fixedly connected to the middle of the rear side of the compaction chamber 1, which provides a connection space for the linkage between the compaction chamber 1 and the drive arm of the external engineering vehicle.

[0016] The working principle of the roadbed compactor provided by this utility model is as follows: During operation, the compaction chamber 1 is connected to the drive arm of an external engineering vehicle via the connecting plate 16. The movement of the external engineering vehicle drives the compaction chamber 1 to move via the drive arm, while the rotating wheels 45 assist the movement of the compaction chamber 1. The movement of the compaction chamber 1 drives the compaction plate 13 to move. When the compaction plate 13 moves to the designated area, the movement of the external engineering vehicle stops, thereby stopping the movement of the compaction chamber 1. Then, the external vehicle-mounted hydraulic pump extracts the oil inside the hydraulic push rod 49 through the conduit 1, causing the piston rod of the hydraulic push rod 49 to retract, thereby driving the square sliding plate 41 to move upward. The ribs 17 slide relative to the adjacent rib grooves inside the square sliding plate 41, which is the vertical movement of the square sliding plate 41. Under the guidance and limiting function, the square sliding plate 41 moves upward, driving the shock absorber 42 to move upward, which in turn drives the two support frames 44 to move upward, and finally drives the moving wheel 45 to move upward. When the compaction plate 13 replaces the moving wheel 45 to achieve stable support for the compaction chamber 1, the external vehicle-mounted hydraulic pump stops drawing oil from the hydraulic push rod 49 and pumps oil into the hydraulic push rod 11 through the conduit, causing the piston rod of the hydraulic push rod 11 to extend, thereby pushing the lifting rod 6 to move downward. The downward movement of the lifting rod 6 drives the compaction hammer 5 to move downward. At the same time, the sliding rods 7 slide inside the corresponding sliding openings, providing guidance and limiting function for the vertical movement of the compaction hammer 5. Under the linkage of the connecting ring 8, the two sliding rods 7 slide synchronously, maintaining the stability of the vertical movement of the compaction hammer 5, and compacting. Hammer 5 moves downward to strike the upper end of the compaction plate 13. The impact received by the compaction plate 13 spreads to the roadbed surface in a surface manner, thereby achieving the roadbed compaction work. After the compaction hammer 5 finishes striking, the external vehicle-mounted hydraulic pump extracts oil from the inside of the hydraulic push rod 11 through the second conduit, causing the piston rod of the hydraulic push rod 11 to retract. This, in turn, drives the compaction hammer 5 upward through the lifting rod 6. When the compaction hammer 5 moves to the designated height, the external vehicle-mounted hydraulic pump pumps oil back into the hydraulic push rod 11 through the second conduit, thus achieving continuous striking of the compaction plate 13 by the compaction hammer 5, thereby continuously carrying out the roadbed compaction work. When the roadbed compaction in this area is completed, the external vehicle-mounted hydraulic pump stops the operation of the hydraulic push rod 11 and the hydraulic push rod 19... In operation, the piston rod of hydraulic push rod 49 extends, pushing the square sliding plate 41 downward, which in turn causes the moving wheels 45 to move downward. The four moving wheels 45 replace the compaction plate 13, moving the compaction chamber 1. Then, the movement of external engineering vehicles drives the movement of the compaction chamber 1, moving the compaction plate 13 to perform compaction work in the lowered area. Once the roadbed compaction work is complete, the external vehicle-mounted hydraulic pump first activates hydraulic push rod 49, allowing the moving wheels 45 to provide stable support for the compaction chamber 1. Then, the external vehicle-mounted hydraulic pump shuts off hydraulic push rod 49, and personnel sequentially turn handwheel 48. The rotation of handwheel 48 drives the adjacent screw 46 to rotate. Since the screws 46 are all threadedly connected to the adjacent support frames 44, the screws 46 move downward during rotation.This, in turn, pushes the support base 47 downwards, ensuring stable contact between the support base 47 and the ground. The four support bases 47 provide stable support for the compaction chamber 1, while preventing the moving wheels 45 from rolling and causing the compaction chamber 1 to move. If the compaction chamber 1 vibrates during the support process, the piston rod of the shock absorber 42 contracts inwards, squeezing hydraulic oil and converting the mechanical energy of the vibration into heat. This effectively absorbs the vibration energy and improves the shock absorption performance of the compaction chamber 1 during storage.

[0017] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A roadbed compaction machine, comprising a compaction chamber (1), wherein the lower end of the compaction chamber (1) is connected to a compaction plate (13) by evenly distributed bolts, characterized in that: It also includes support structures (4); Support mechanism (4): It includes a square sliding plate (41), a shock absorber (42), a spring (43), a support frame (44), a moving wheel (45), and a support base (47). The square sliding plate (41) is slidably connected to the middle of the outer surface of the compaction chamber (1). The middle of the outer surface of the compaction chamber (1) is fixedly connected with evenly distributed ribs (17). The interior of the square sliding plate (41) is provided with evenly distributed rib grooves. The rib grooves are slidably connected to the adjacent ribs (17). The front and rear ends of the lower surface of the square sliding plate (41) are fixed. The device is connected to a uniformly distributed shock absorber (42). The lower ends of the piston rods of the three longitudinally adjacent shock absorbers (42) are all fixedly connected to the upper end of the same support frame (44). A uniformly distributed spring (43) is provided between the upper end of the support frame (44) and the square sliding plate (41). The spring (43) is sleeved on the outer surface of the adjacent shock absorber (42). A symmetrically distributed moving wheel (45) is provided at the lower end of the support frame (44). An adjustable support seat (47) is provided at both the front and rear ends of the lower surface of the support frame (44).

2. The roadbed compactor according to claim 1, characterized in that: The support mechanism (4) also includes a screw (46) and a handwheel (48). The screw (46) is threaded to the front and rear ends of the support frame (44). The lower end of the screw (46) is fixedly connected to the upper end of the vertically adjacent support seat (47). The upper end of the screw (46) is fixedly connected to the handwheel (48). A second corrugated pipe (15) is provided between the lower surface of the handwheel (48) and the upper surface of the support frame (44) and between the lower surface of the support frame (44) and the upper surface of the support seat (47). The second corrugated pipe (15) is sleeved on the outer surface of the adjacent screw (46).

3. A roadbed compactor according to claim 1, characterized in that: The support mechanism (4) also includes a hydraulic push rod (49), which is located at the front end of the compaction chamber (1). The lower end of the piston rod of the hydraulic push rod (49) is fixedly connected to the front end of the upper surface of the square sliding plate (41). A bellows (14) is provided between the front end of the upper surface of the square sliding plate (41) and the front end of the compaction chamber (1). The bellows (14) is sleeved on the outer surface of the piston rod of the hydraulic push rod (49). The hydraulic port of the hydraulic push rod (49) is connected to the oil port of the external vehicle-mounted hydraulic pump through a conduit.

4. A roadbed compactor according to claim 1, characterized in that: The compaction chamber (1) is fixedly connected to the middle of a fixed plate (2). The front and rear ends of the fixed plate (2) are slidably connected to slide rods (7). The lower ends of the two slide rods (7) are fixedly connected to the upper ends of the compaction hammer (5). The upper ends of the two slide rods (7) are fixedly connected to the connecting rings (8). The front and rear ends of the lower surface of the fixed plate (2) and the front and rear ends of the upper surface of the compaction hammer (5) are connected to connecting seats (9) by evenly distributed bolts. Two springs (10) are fixedly connected between two vertically adjacent connecting seats (9).

5. A roadbed compactor according to claim 4, characterized in that: The upper end of the compaction chamber (1) is provided with a drive chamber (3), and the bottom of the drive chamber (3) is provided with a hydraulic push rod (11). The middle part of the upper surface of the compaction hammer (5) is fixedly connected with a lifting rod (6). The lifting rod (6) passes through the interior of the fixed plate (2). The lower end of the piston rod of the hydraulic push rod (11) is connected to the upper end of the lifting rod (6) through evenly distributed bolts (3). The hydraulic port of the hydraulic push rod (11) is connected to the oil port of the external vehicle-mounted hydraulic pump through the conduit (2).

6. A roadbed compactor according to claim 5, characterized in that: The upper end of the drive compartment (3) is connected to a closed cover (12) by four evenly distributed bolts.

7. A roadbed compactor according to claim 1, characterized in that: A connecting plate (16) is fixedly connected to the middle of the rear side of the compaction chamber (1).

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