Tamping device based on house building backfill construction

Abstract

The invention belongs to the technical field of house building construction, and discloses a tamping device based on house building backfill construction, which comprises an earth rammer, the earth rammer comprises a lower tamping body, a gear box and a tamping plate, the gear box and the tamping plate are respectively mounted at the top and the bottom of the lower tamping body, a single-cylinder engine is further arranged on the gear box, and the tamping device further comprises a balancing frame hinged to the gear box, a supporting mechanism is arranged between the balancing frame and the lower tamping body; the bottom end of the lower tamping body is hinged to the tamping plate. According to the scheme, the grip sleeve is communicated with the hydraulic supporting rod by controlling the liquid valve assembly, at the moment, under the gravity action of the gearbox and the single-cylinder engine, when the device runs, due to the fact that the inclination angle of the lower tamping body is increased, the tamping plate can be subjected to reverse acting force in the horizontal direction when the lower tamping body bounces, and the tamping effect is improved. Therefore, when the whole device bounces up, the device has the trend of moving forwards, the operation that an operator pulls the tamping plate in front due to pulling force is avoided, and manpower is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, in particular to a compacting device based on building backfill construction. Background Art

[0002] During the building construction process, the quality of backfill soil and its strict construction compaction are key links to ensure the long-term stability and safety of the project.

[0003] A rammer is a type of engineering machinery that uses impact force to compact the soil. It is widely used in scenarios such as foundation treatment and backfill tamping in narrow spaces. When working, it uses the engine as power and uses the internal eccentric wheel or crank-connecting rod mechanism to drive the lower rammer and rammer plate to bounce, thereby achieving the soil compaction operation. In actual use, the rammer requires two people to operate. One person holds the rammer by hand to ensure its balance, and the other person is required to connect the rammer plate to the front with a rope to ensure that the rammer can play a role in compacting the soil during operation. This method requires two people to operate, which consumes manpower and makes the originally narrow space even more crowded. Therefore, in order to solve the above problems, a compaction device based on building backfill construction is proposed. Summary of the Invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a compaction device based on building backfill construction, which solves the problem that the existing rammer consumes manpower when in use and makes the equipment difficult to operate in a small space.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a compaction device for building backfill construction, comprising a rammer, the rammer comprising a lower rammer body, a gear box and a rammer plate respectively mounted on the top and bottom of the rammer body, the gear box further comprising a single-cylinder engine, and further comprising: a balancing frame hingedly connected to the gear box, a support mechanism being provided between the balancing frame and the lower rammer body; wherein the bottom end of the lower rammer body is hingedly connected to the rammer plate; The support mechanism includes a hydraulic support rod hinged to the periphery of the lower ram body, the top end of the hydraulic support rod is hinged to the balance frame, the hydraulic support rod is fixedly connected to a liquid valve assembly, both ends of the balance frame are fixedly connected to a grip sleeve, a piston rod is movably sleeved in the grip sleeve, the hydraulic support rod, the liquid valve assembly and the grip sleeve are all filled with hydraulic oil, the hydraulic support rod can be connected to the grip sleeve cavity through the liquid valve assembly, the rod body of the piston rod extends to the outside of the grip sleeve and is clearance-matched with the end of the grip sleeve; A set of kits is symmetrically hinged on the balance frame, a movable sleeve in the kit is provided with a limit rod and the bottom of the limit rod is hinged to the ramming plate, and the lower ramming body, the balance frame, the limit rod and the ramming plate form a parallelogram structure.

[0006] Preferably, the liquid valve assembly includes a three-way pipe one end of which is connected to the hydraulic support rod and a pipe one respectively connected to two handle sleeve cavities. A press valve one is fixedly connected to the outer periphery of the two handle sleeves, and the three-way pipe one can be connected to the pipe one through the press valve one.

[0007] Preferably, a gas compression storage device is provided on the top of the kit, and a gas valve assembly for controlling the gas in the gas compression storage device to flow into the grip sleeve is also installed on the handle sleeve, and the gas is input to the back liquid surface of the piston end of the piston rod.

[0008] Preferably, the gas compression storage device includes a limiting sleeve fixedly mounted on the top of the kit, the top of the limiting sleeve is fixedly connected to a pipe three, a pressure tank is fixedly mounted on the bottom of the balance frame, a set of one-way valves that are symmetrically arranged on the pressure tank and are in one-way communication with the pressure tank cavity, and the bottom ends of the two pipes three are respectively connected to the pressure tank through two one-way valves; The kit extends into the limiting sleeve cavity and can move axially therein, and the output end of the pressure tank can be communicated with the handle sleeve through a gas valve assembly.

[0009] Preferably, the top end of the kit is a piston end, and a constant pressure hole is provided at the top of the limiting sleeve.

[0010] Preferably, the gas valve assembly includes a two-way pipe with one end connected to the pressure tank, a gas pipe is fixedly mounted on the handle sleeve, a two-way pressure valve is fixedly connected to the handle sleeve, the other two ends of the two-way pipe are respectively mounted on two gas pipes, and the other end of the two-way pressure valve is also mounted on the corresponding gas pipe; The pressure tank can be connected to the handle sleeve through the second three-way pipe, the air supply pipe and the second press valve.

[0011] Preferably, the top of the limiting sleeve is fixedly connected to a second pipe; A group of piston columns are movably installed at the bottom end of the second pipe. The bottom end of the piston column is fixedly connected to an anti-slip part that is located inside the ramming plate in the initial state. The top end of the piston column is the piston end. The bottom end of the second pipe is connected to the part below the piston end, and the piston column can move downward when the pipe two extracts gas.

[0012] Preferably, the piston column is arranged at an angle, and the ramming plate is also provided with an exhaust passage for balancing the pressure when the piston column moves.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The above scheme controls the liquid valve assembly to connect the grip sleeve with the hydraulic support rod. At this time, under the gravity of the gear box and the single-cylinder engine, the hydraulic support rod will be compressed, so that the hydraulic oil in the hydraulic support rod is input into the grip sleeve through the liquid valve assembly for storage. At the same time, under the limit of the limit rod, the inclination angle of the lower ramming body will increase. At this time, the connection between the grip sleeve and the hydraulic support rod is blocked by the liquid valve assembly. When the device is running, due to the increase in the inclination angle of the lower ramming body, the lower ramming body will cause the ramming plate to be subjected to a reverse force in the horizontal direction when bouncing, so that the device as a whole has a tendency to move forward when bouncing, avoiding the need for the operator to pull the ramming plate in front due to the pulling force, saving manpower and facilitating operation in a narrow space; In the above scheme, during the overall rebounding process of the device, the lower ramming body will first extend and rebound, and then contract to store force after rebounding. During the rebound, due to the extension of the lower ramming body, the limit rod will also move downward relative to the kit, so that the gas inside the limit sleeve is in a negative pressure state. At this time, the limit sleeve will extract the gas in the ramming plate through the second pipe, so that the piston rod and the anti-slip part will be inserted downward into the soil, avoiding the backward slipping of the ramming plate during the tilted forward and upward movement. In the above scheme, when the lower ramming body contracts, the limit rod will move upward relative to the kit. At this time, the gas in the limit sleeve will be compressed, and the gas will enter the pressure tank in one direction through pipeline three and the one-way valve for compressed storage. When the operator needs to reset the inclination angle of the lower ramming body, the operator presses the pressing valve two and opens the liquid valve assembly. At this time, the gas will enter the back liquid surface of the piston end of the piston rod in the grip sleeve, thereby pushing the piston rod to input the liquid in the grip sleeve into the hydraulic support rod through the liquid valve assembly, thereby increasing the length of the hydraulic support rod, thereby reducing the inclination angle of the lower ramming body, and the device can jump in place during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view planar structure schematic diagram of the present invention; Figure 3 Schematic diagram of the installation of the kit of the present invention; Figure 4 It is a structural schematic diagram of the support mechanism of the present invention; Figure 5 Schematic diagram of the structure of the anti-slip member of the present invention; Figure 6 is a front plan perspective view of the gas compression mechanism of the present invention; Figure 7 Schematic diagram of the structure of the gas valve assembly of the present invention; Figure 8It is a schematic diagram of a partial cross-sectional structure of a tamping plate of the present invention.

[0015] In the figure: 1. rammer; 11. rammer plate; 111. piston rod; 112. anti-slip part; 113. exhaust duct; 12. lower rammer body; 13. gear box; 14. single-cylinder engine; 2. balance frame; 21. kit; 22. limit rod; 3. support mechanism; 31. hydraulic support rod; 32. liquid valve assembly; 321. three-way pipe one; 322. push valve one; 323. pipeline one; 33. grip sleeve; 34. piston rod; 4. gas compression storage device; 41. limit sleeve; 411. constant pressure hole; 412. pipeline two; 42. pipeline three; 43. pressure tank; 44. one-way valve; 5. gas valve assembly; 51. three-way pipe two; 52. push valve two; 53. gas pipeline. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] like Figures 1 to 8 As shown, the present invention provides a compacting device based on building backfill construction, including a rammer 1, which includes a lower rammer body 12 and a gear box 13 and a rammer plate 11 respectively installed on the top and bottom of the rammer body. The gear box 13 is also provided with a single-cylinder engine 14. The rammer 1 also includes: a balance frame 2 hinged to the gear box 13, and a support mechanism 3 is provided between the balance frame 2 and the lower rammer body 12; wherein the bottom end of the lower rammer body 12 is hinged to the rammer plate 11; The support mechanism 3 includes a hydraulic support rod 31 hinged to the outer periphery of the lower ramming body 12, the top of the hydraulic support rod 31 is hinged to the balance frame 2, the hydraulic support rod 31 is fixedly connected to a liquid valve assembly 32, both ends of the balance frame 2 are fixedly connected to a grip sleeve 33, a piston rod 34 is movably sleeved in the grip sleeve 33, the hydraulic support rod 31, the liquid valve assembly 32 and the grip sleeve 33 are all filled with hydraulic oil, the hydraulic support rod 31 can be connected to the grip sleeve 33 cavity through the liquid valve assembly 32, the rod body of the piston rod 34 extends to the outside of the grip sleeve 33 and is clearance-matched with the end of the grip sleeve 33, which can balance the pressure inside the grip sleeve 33 and avoid the situation where the piston rod 34 cannot move; A set of kits 21 are symmetrically hinged on the balancing frame 2, and a limit rod 22 is movably sleeved in the kit 21. The bottom of the limit rod 22 is hinged to the ramming plate 11, and the lower ramming body 12, the balancing frame 2, the limit rod 22 and the ramming plate 11 form a parallelogram structure. The liquid valve assembly 32 includes a three-way pipe 321, one end of which is connected to the hydraulic support rod 31, and a pipe 323 respectively connected to the two cavities of the handle sleeve 33. A press valve 322 is fixedly connected to the outer periphery of the two handle sleeves 33, and the three-way pipe 321 can be connected to the pipe 323 through the press valve 322.

[0018] By adopting the above scheme, the grip sleeve 33 is connected to the hydraulic support rod 31 by controlling the liquid valve assembly 32. At this time, under the action of gravity of the gear box 13 and the single-cylinder engine 14, the hydraulic support rod 31 is compressed, so that the hydraulic oil in the hydraulic support rod 31 is input into the grip sleeve 33 through the liquid valve assembly 32 for storage. At the same time, under the limit of the limit rod 22, the inclination angle of the lower ramming body 12 will increase. At this time, the pressure on the pressing valve 322 is released to block the connection between the pipe 323 and the three-way pipe 321. When the device is running, due to the increase in the inclination angle of the lower ramming body 12, the lower ramming body 12 will cause the ramming plate 11 to be subjected to a reverse force in the horizontal direction when it bounces, so that the entire device has a tendency to move forward when it bounces, avoiding the pulling force that requires the operator to pull the ramming plate 11 in the front, saving manpower.

[0019] like Figure 1 、 Figure 2 and Figure 5-Figure 7 As shown, a gas compression storage device 4 is provided on the top of the kit 21, and a gas valve assembly 5 for controlling the gas in the gas compression storage device 4 to flow into the grip sleeve 33 is also installed on the grip sleeve 33, and the gas is input to the back liquid surface of the piston end of the piston rod 34; The gas compression storage device 4 includes a limiting sleeve 41 fixedly mounted on the top of the kit 21. The top of the limiting sleeve 41 is fixedly connected to a pipe 3 42. A pressure tank 43 is fixedly mounted on the bottom of the balance frame 2. A pair of one-way valves 44 are symmetrically arranged on the pressure tank 43, which are connected to the cavity of the pressure tank 43 in one direction. The bottom ends of the two pipes 3 42 are connected to the pressure tank 43 through two one-way valves 44 respectively. The sleeve 21 extends into the cavity of the limiting sleeve 41 and can move axially therein. The output end of the pressure tank 43 can communicate with the grip sleeve 33 through the gas valve assembly 5. The gas valve assembly 5 includes a second tee pipe 51, one end of which is connected to the pressure tank 43. A gas pipe 53 is fixedly mounted on the handle sleeve 33. A second pressure valve 52 is fixedly connected to the handle sleeve 33. The other two ends of the second tee pipe 51 are respectively mounted on two gas pipes 53, and the other end of the second pressure valve 52 is also mounted on the corresponding gas pipe 53. The pressure tank 43 can be connected to the handle sleeve 33 through the second three-way pipe 51, the air supply pipe 53 and the second pressure valve 52; With the above solution, when the lower ram body 12 contracts, the limit rod 22 moves upward relative to the sleeve 21. At this time, the gas in the limit sleeve 41 will be compressed, and the gas will enter the pressure tank 43 in one direction through the pipe 3 42 and the one-way valve 44 for compression and storage. When the operator needs to reset the tilt angle of the lower ram body 12, the operator presses the second pressing valve 52 and opens the liquid valve assembly 32. At this time, the gas will enter the back liquid surface of the piston end of the piston rod 34 in the grip sleeve 33, thereby pushing the piston rod 34 to input the liquid in the grip sleeve 33 into the hydraulic support rod 31 through the liquid valve assembly 32, thereby increasing the length of the hydraulic support rod 31, thereby reducing the tilt angle of the lower ram body 12. The device can jump in place during operation. It is worth noting that when the limiting rod 22 moves upward in the limiting sleeve 41, some gas will be discharged through the bottom of the sleeve 21, so as to avoid the situation where the limiting rod 22 cannot move upward in the limiting sleeve 41 due to the lack of gas stored in the pressure tank 43. At the same time, it also makes it convenient for the gas to be extracted through the bottom of the kit 21 and enter the limiting sleeve 41 when the limiting rod 22 moves downward in the limiting sleeve 41. At this time, the gas in the pressure tank 43 is blocked by the one-way valve 44 and cannot flow back into the limiting sleeve 41.

[0020] like Figure 6 As shown, the top of the kit 21 is a piston end, and a constant pressure hole 411 is opened on the top of the limiting sleeve 41; By adopting the above-mentioned scheme, through the setting of the top end of the limiting rod 22, when the limiting rod 22 moves upward, the gas in the limiting sleeve 41 can be sent into the pressure tank 43 in one direction through the pipe three 42 and the one-way valve 44 for compression. At the same time, some gas will be discharged through the constant pressure hole 411 to balance the internal pressure of the limiting sleeve 41.

[0021] like Figure 1 、 Figure 5 、 Figure 6 and Figure 8 As shown, the top of the limiting sleeve 41 is fixedly connected to the second pipe 412; the bottom end of the second pipe 412 is movably installed with a group of piston rods 111, and the bottom end of the piston rods 111 is fixedly connected to the anti-slip member 112 which is initially located inside the ramming plate 11. The top of the piston rod 111 is the piston end, and the bottom end of the second pipe 412 is connected to the part below the piston end. When the second pipe 412 extracts gas, the piston rod 111 can move downward. The piston column 111 is arranged at an angle, and the ramming plate 11 is also provided with an exhaust passage 113 for balancing the pressure when the piston column 111 moves.

[0022] With the above solution, during the overall springing process of the device, the lower ramming body 12 will first extend and spring up, and then contract and store force after springing up. During springing, due to the extension of the lower ramming body 12, the limiting rod 22 will also move downward relative to the sleeve 21, so that the gas inside the limiting sleeve 41 is in a negative pressure state. At this time, the limiting sleeve 41 will extract the gas in the ramming plate 11 through the second pipe 412, so that the piston rod 111 and the anti-slip member 112 are inserted downward into the soil, thereby preventing the ramming plate 11 from slipping backward during the process of tilting forward and upward movement. It is worth noting that when the lower ramming body 12 contracts after the device pops up, the limiting rod 22 will also move upward relative to the kit 21, thereby sending the gas in the limiting sleeve 41 into the ramming plate 11, thereby pushing the piston column 111 and the anti-slip part 112 upward, making it easier for the ramming plate 11 to move downward to compact the soil.

[0023] The working principle and use process of the present invention: First, the operator controls the liquid valve assembly 32 to connect the grip sleeve 33 with the hydraulic support rod 31. At this time, under the action of the gravity of the gear box 13 and the single-cylinder engine 14, the hydraulic support rod 31 is compressed, so that the hydraulic oil in the hydraulic support rod 31 is input into the grip sleeve 33 through the liquid valve assembly 32 for storage. At the same time, under the limit of the limit rod 22, the inclination angle of the lower ramming body 12 will increase. At this time, the liquid valve assembly 32 blocks the connection between the grip sleeve 33 and the hydraulic support rod 31. When the device is running, due to the increase in the inclination angle of the lower ramming body 12, the lower ramming body 12 will cause the ramming plate 11 to be subjected to a reverse force in the horizontal direction when it bounces, so that the device as a whole has a tendency to move forward when it bounces, avoiding the need for the operator to pull the ramming plate 11 from the front due to the pulling force; During the overall rebounding process of the device, the lower ramming body 12 will first extend and rebound, and then contract to accumulate force after rebounding. During the rebounding process, due to the extension of the lower ramming body 12, the limiting rod 22 will also move downward relative to the sleeve 21, so that the gas inside the limiting sleeve 41 is in a negative pressure state. At this time, the limiting sleeve 41 will extract the gas in the ramming plate 11 through the second pipe 412, so that the piston rod 111 and the anti-slip member 112 are downwardly inserted into the soil, thereby preventing the ramming plate 11 from slipping backward during the tilted forward and upward movement; When the lower ramming body 12 contracts, the limit rod 22 will move upward relative to the kit 21. At this time, the gas in the limit sleeve 41 will be compressed, and the gas will enter the pressure tank 43 in one direction through the pipeline 3 42 and the one-way valve 44 for compression and storage. When the operator needs to reset the inclination angle of the lower ramming body 12, the operator presses the pressing valve 2 52 and opens the liquid valve assembly 32. At this time, the gas will enter the back liquid surface of the piston end of the piston rod 34 in the grip sleeve 33, thereby pushing the piston rod 34 to input the liquid in the grip sleeve 33 into the hydraulic support rod 31 through the liquid valve assembly 32, thereby increasing the length of the hydraulic support rod 31, thereby reducing the inclination angle of the lower ramming body 12, and the device can jump in place during operation.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A compacting device for building backfill construction, comprising a ramming machine (1), wherein the ramming machine (1) comprises a lower ramming body (12) and a gear box (13) and a ramming plate (11) respectively mounted on the top and bottom of the ramming body, wherein the gear box (13) is further provided with a single-cylinder engine (14), and wherein the ramming machine (1) comprises: Also includes: A balancing frame (2) hinged to the gear box (13), with a supporting mechanism (3) provided between the balancing frame (2) and the lower ramming body (12); Wherein, the bottom end of the lower ramming body (12) is hinged on the ramming plate (11); The support mechanism (3) includes a hydraulic support rod (31) hinged to the outer periphery of the lower ramming body (12), the top end of the hydraulic support rod (31) is hinged to the balance frame (2), the hydraulic support rod (31) is fixedly connected to a liquid valve assembly (32), both ends of the balance frame (2) are fixedly connected to a grip sleeve (33), a piston rod (34) is movably sleeved in the grip sleeve (33), the hydraulic support rod (31), the liquid valve assembly (32) and the grip sleeve (33) are all filled with hydraulic oil, the hydraulic support rod (31) can be connected to the grip sleeve (33) cavity through the liquid valve assembly (32), and the rod body portion of the piston rod (34) extends to the outside of the grip sleeve (33) and is clearance-matched with the end of the grip sleeve (33); A set of kits (21) is symmetrically hinged on the balancing frame (2), a movable sleeve is provided with a limiting rod (22) in the kit (21), and the bottom of the limiting rod (22) is hinged to the tamping plate (11), and the lower tamping body (12), the balancing frame (2), the limiting rod (22) and the tamping plate (11) form a parallelogram structure.

2. The compaction device for building backfill construction according to claim 1, characterized in that: The liquid valve assembly (32) includes a three-way pipe (321) whose one end is connected to the hydraulic support rod (31) and a pipe (323) respectively connected to two cavities of the handle sleeve (33). The outer periphery of the two handle sleeves (33) is fixedly connected with a press valve (322). The three-way pipe (321) can be connected to the pipe (323) through the press valve (322).

3. The compaction device for building backfill construction according to claim 1, characterized in that: A gas compression storage device (4) is provided on the top of the kit (21), and a gas valve assembly (5) for controlling the gas in the gas compression storage device (4) to flow into the grip sleeve (33) is also installed on the grip sleeve (33), and the gas is input to the back liquid surface of the piston end of the piston rod (34).

4. The compaction device for building backfill construction according to claim 3, characterized in that: The gas compression storage device (4) includes a limiting sleeve (41) fixedly mounted on the top of the kit (21), the top of the limiting sleeve (41) is fixedly connected to a pipe three (42), the bottom of the balance frame (2) is fixedly mounted with a pressure tank (43), the pressure tank (43) is symmetrically provided with a group of one-way valves (44) that are in one-way communication with the cavity of the pressure tank (43), and the bottom ends of the two pipes three (42) are respectively connected to the pressure tank (43) through two one-way valves (44); The kit (21) extends into the cavity of the limiting sleeve (41) and can move axially therein, and the output end of the pressure tank (43) can be connected to the grip sleeve (33) through the gas valve assembly (5).

5. The compaction device for building backfill construction according to claim 4, characterized in that: The top end of the kit (21) is a piston end, and the top of the limiting sleeve (41) is provided with a constant pressure hole (411).

6. The compaction device for building backfill construction according to claim 4, characterized in that: The gas valve assembly (5) includes a two-way pipe (51) having one end connected to the pressure tank (43), a gas supply pipe (53) is fixedly mounted on the handle sleeve (33), a two-pressure valve (52) is fixedly connected to the handle sleeve (33), the other two ends of the two-way pipe (51) are respectively mounted on two gas supply pipes (53), and the other end of the two-pressure valve (52) is also mounted on the corresponding gas supply pipe (53); The pressure tank (43) can be communicated with the handle sleeve (33) through the second three-way pipe (51), the air supply pipe (53) and the second pressing valve (52).

7. The compaction device for building backfill construction according to claim 4, characterized in that: The top of the limiting sleeve (41) is fixedly connected to a second pipe (412); A group of piston columns (111) are movably installed at the bottom end of the second pipe (412), and the bottom end of the piston column (111) is fixedly connected to an anti-slip member (112) located inside the ramming plate (11) in the initial state. The top end of the piston column (111) is a piston end, and the bottom end of the second pipe (412) is connected to the part below the piston end, and the piston column (111) can be moved downward when the second pipe (412) extracts gas.

8. The compaction device for building backfill construction according to claim 7, characterized in that: The piston column (111) is arranged in an inclined manner, and the ramming plate (11) is also provided with an exhaust passage (113) for balancing the pressure when the piston column (111) moves.

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