Earthwork backfilling and tamping device for house building

Abstract

The invention relates to the technical field of house construction, in particular to an earthwork backfilling and tamping device for house construction, a dust blocking cover covers the periphery of a tamping seat, so that dust generated when the tamping seat performs earthwork tamping operation can be covered by the dust blocking cover, a good sealing and dust blocking effect is achieved, large-particle dust impurities are filtered and intercepted through a sealing net plate, and the dust blocking effect is good. Air penetrating through the sealing net plate and entering the machine base can dissipate heat of the stress base and the impact base, abrasion of the stress base and the impact base is relieved, the filter net plate can slide relative to the scraping frame in the downward sliding process, and therefore dust filtered and intercepted by the surface of the filter net plate is scraped off and falls into the collecting net frame, and the dust collecting effect is improved. According to the dust collection device, dust is collected in a centralized mode while the filter screen plates are cleaned, the material collection screen frames are conveniently detached and taken out from the corresponding material collection boxes, cleaning is convenient, circulation of air in the material collection boxes is accelerated, and therefore the effect of collecting the scraped dust can be improved, and the dust is prevented from scattering and flying all around again.

Description

Technical Field

[0001] The invention relates to the technical field of house construction, and in particular to an earth backfilling and compacting device for house construction. Background Art

[0002] Housing construction projects refer to various types of housing construction and their ancillary facilities and the supporting lines, pipelines, equipment installation projects and indoor and outdoor decoration projects. Housing construction involves many operational steps, including the compaction of backfill earthwork. There are many types of traditional compaction devices, among which hydraulic rammers are widely used in various construction projects due to their high efficiency and practicality, such as roads, railways, bridges, airports, etc. Hydraulic rammers have the characteristics of good compaction effect, large compaction depth, and high compaction efficiency. They can effectively improve the compaction degree of earthwork, reduce post-construction settlement, and improve project quality.

[0003] The working principle of the hydraulic rammer is to use hydraulic pressure to lift the rammer to a certain height, and then impact and compact the ground through free fall motion and hydraulic push. During the compaction process, the soil particles are rearranged under the impact force, the gas and moisture in the gaps are discharged, and the soil particles are more compact, thereby improving the compaction of the earth.

[0004] However, in the process of compacting earth, traditional hydraulic rammers have a large impact force and the soil on the surface of the earth is loose, which easily causes dust on the surface of the earth to fly everywhere. This is not only not conducive to the surrounding workers to observe the compaction of the earth surface, but also causes the dust to be inhaled into the lungs of the workers, posing a safety hazard to the respiratory system of surrounding personnel. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides an earth backfilling and compacting device for house construction, which can effectively solve the technical problems raised in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides an earth backfilling and compacting device for house construction, comprising a machine base, a movable cavity is provided in the machine base, air inlets are provided around the machine base and penetrate the movable cavity, an opening is provided at the bottom of the machine base and penetrates the movable cavity, a compacting seat is installed in the opening for lifting and sliding, an impact seat for impacting the compacting seat is installed in the movable cavity for lifting and sliding, a scraper collecting assembly comprises scraper frames respectively embedded and installed in corresponding air inlets, and also comprises material collecting net frames respectively detachably installed at relative positions at the bottom of corresponding scraper frames, and an ash blocking assembly comprises an ash blocking cover fixedly sleeved on the machine base, and the ash blocking cover A telescopic frame is installed on the bottom telescopic sliding device, and four rubber extrusion seats that abut each other end to end to form a seal are installed at the bottom of the telescopic frame. The filtering and heat dissipation component includes a filter screen installed around the top of the tamping seat and abutting against the corresponding scraper frame, and also includes a force-bearing seat installed at the bottom of the tamping seat and in contact with the impact seat. The air intake and exhaust component includes a plurality of fans arranged in the active cavity, one of the input ends of the several fans is connected to the active cavity through the inner cavity of the impact seat and the inner cavity of the force seat, and the other two input ends of the several fans are opposite to the corresponding receiving mesh frame position, and the output end of the fan is connected to the outside of the machine base.

[0008] Furthermore, three connecting seats distributed in a triangular shape are vertically fixedly installed on an outer wall of the machine base, and a number of exhaust pipes are embedded and installed between the outer wall of the machine base and the active cavity. One end of the exhaust pipes is connected to the corresponding fan input end, and the other end is opposite to the corresponding material receiving screen frame position.

[0009] Furthermore, first limiting sliding grooves are provided at the four inner cavity corners of the movable cavity, and material receiving boxes are fixedly installed on the four outer side walls of the machine base. The four material receiving boxes are respectively arranged at the bottom of the corresponding scraping frame.

[0010] Furthermore, the four material receiving mesh frames are respectively embedded and placed in the corresponding material receiving boxes, the outer side walls of the four material receiving mesh frames are in contact with the inner cavity walls of the corresponding material receiving boxes, and the bottom ends of the several exhaust pipes are respectively fixedly connected to the corresponding ends of the material receiving boxes.

[0011] Furthermore, a square lifting opening is provided at the bottom of the dust shield to facilitate the lifting and sliding of the telescopic frame, four second limit sliding grooves are provided on the two opposite inner cavity walls of the square lifting opening, and second limit sliding blocks are fixedly installed at the center positions of the four outer walls and four inner walls of the telescopic frame, and several second limit sliding blocks are respectively slidably installed in the corresponding second limit sliding grooves.

[0012] Furthermore, first limit sliding blocks are fixedly installed at the four corners of the force bearing seat, and the four first limit sliding blocks are respectively slidably installed in the corresponding first limit sliding grooves.

[0013] Furthermore, the interior of the force-bearing seat is hollow in design, and the four outer walls of the force-bearing seat are all provided with a plurality of first heat dissipation holes penetrating through the inner cavity of the force-bearing seat, and the top end of the force-bearing seat is provided with a plurality of second heat dissipation holes penetrating through the inner cavity of the force-bearing seat.

[0014] Furthermore, a lifting cylinder is fixedly installed in the machine base, and a lifting rod is fixedly installed between the output end of the lifting cylinder and the top center of the impact seat. The interior of the impact seat is also hollow in design, and the four outer walls and the lower bottom of the impact seat are penetrated through the inner cavity to open a plurality of third heat dissipation holes, and the third heat dissipation holes located at the bottom are opposite to the second heat dissipation holes.

[0015] Furthermore, a sealing cover sleeved on the lifting rod is fixedly mounted on the top of the impact seat, and the sealing cover is communicated with the inner cavity of the impact seat.

[0016] Furthermore, an air inlet pipe is connected between one of the input ends of the four fans and the sealing cover, and the other two output ends of the four fans are respectively connected to the corresponding air exhaust pipes.

[0017] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0018] 1. A dust shield is fixedly mounted around the compacting machine base. The dust shield is covered around the compacting base, so that the dust generated by the compacting base during the compacting operation will be covered by the dust shield to prevent the dust from flying around. At the same time, since the compacted soil will sink while the height of the uncompacted soil remains unchanged during the compacting operation, the compaction site will be uneven in height. At this time, the four rubber extrusion seats at the bottom of the dust shield adopt a split structure, and each rubber extrusion seat is fitted according to the corresponding soil surface contour to ensure that the dust shield can have a good closed dust shielding effect during the soil compaction process;

[0019] 2. Sealing mesh plates are installed around the top of the tamping base, and a fan is set inside the base. The fan extracts the air inside the tamping base and discharges it out of the base, which reduces the internal pressure of the base. The air in the dust shield outside the base is extracted through the four air inlets. Since the sealing mesh plates are set in the corresponding air inlets, the air and dust in the dust shield outside the base will be filtered through the sealing mesh plates. Large dust particles will be intercepted outside the sealing mesh plates, and the air can enter the base normally.

[0020] 3. Impact of the force bearing seat and the impact seat is a necessary step to achieve the compaction of the earthwork by the compaction seat. A large amount of heat will be generated during the impact of the force bearing seat and the impact seat. Long-term heat accumulation will easily cause the force bearing seat and the impact seat to wear more. The air entering the machine base will pass through the relevant heat dissipation holes from the force bearing seat and the impact seat to dissipate heat for the force bearing seat and the impact seat, slowing down the wear of the force bearing seat and the impact seat. The heat after heat dissipation will be uniformly discharged from the machine base through the fan;

[0021] 4. There are collecting mesh frames around the machine base. When the machine base drives the tamping seat to move to the next tamping point, the tamping seat will fall naturally due to its own gravity. At this time, the four filter screens will slide downward synchronously. The filter screens will slide relative to the scraping frame during the downward sliding process, so that the dust intercepted by the filter screen surface is scraped off and falls into the collecting mesh frame, which not only cleans the filter screen but also collects the dust in a centralized manner. The collecting mesh frame can be easily disassembled and taken out from the corresponding collecting box for easy cleaning.

[0022] 5. The other two input ends of the fan are connected to the inner cavity of the collecting box through the exhaust pipe, so as to accelerate the circulation of air in the collecting box, thereby accelerating the air flow rate in the collecting mesh placed in the collecting box, thereby improving the collection effect of the scraped dust and preventing the dust from scattering again. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall first-view structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall second viewing angle structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the dust blocking assembly of the present invention;

[0027] Figure 4 It is a schematic diagram of the overall structure of the base of the present invention;

[0028] Figure 5 It is a schematic diagram of the split structure of the tamping base and the machine base of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the material receiving mesh frame and the material receiving box of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the intake and exhaust assembly of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the force bearing seat and the impact seat of the present invention.

[0032] The numbers in the figure represent:

[0033] 1. Machine base; 11. Connecting base; 12. Air extraction pipe; 13. Air inlet; 14. Opening; 15. First limit slide; 16. Scraping frame; 17. Material receiving box; 18. Material receiving net frame;

[0034] 2. Dust shield; 21. Square lifting port; 22. Second limit slide; 23. Telescopic frame; 24. Second limit slide; 25. Rubber extrusion seat;

[0035] 3. Ramming seat; 31. Force bearing seat; 32. First heat dissipation hole; 33. Second heat dissipation hole; 34. First limit slider; 35. Filter screen plate;

[0036] 41. lifting cylinder; 42. lifting rod; 43. impact seat; 44. third heat dissipation hole; 45. sealing cover;

[0037] 5. Fan; 51. Air intake pipe. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0039] The present invention will be further described below in conjunction with the embodiments.

[0040] Embodiment 1:

[0041] Reference Figure 1-8, which is the first embodiment of the present invention, is a soil backfilling compacting device for house construction, including a machine base 1, a movable cavity is opened in the machine base 1, an air inlet 13 is opened around the machine base 1 and penetrates the movable cavity, an opening 14 is opened at the bottom of the machine base 1 and penetrates the movable cavity, a compacting seat 3 is installed in the opening 14 in a lifting and sliding manner, and the compacting seat 3 has the same diameter as the opening 14, so as to ensure that when the fan 5 extracts the air in the movable cavity, it will not be extracted from the opening 14, the air in the dust cover 2 is blocked outside the machine base 1, and an impact compacting seat 3 is installed in the movable cavity in a lifting and sliding manner. The cross sections of the tamping seat 3 and the impact seat 43 are consistent, and the lifting and sliding of the two are stable, so the contact surface is always in close contact and stable, ensuring that the positions of the upper and lower heat dissipation holes are always aligned, and the scraper collection assembly includes a scraper frame 16 respectively embedded in the corresponding air inlet 13, and the filter screen plate 35 can completely cover the air inlet 13 to ensure that the air entering the active cavity from the air inlet 13 passes through the filter screen plate 35, and also includes a collection screen frame 18 that is detachably installed at the bottom position of the corresponding scraper frame 16, and a dust blocking assembly The components include a dust shield 2 fixedly mounted on the machine base 1, a telescopic frame 23 is telescopically and slidably mounted at the bottom of the dust shield 2, four rubber extrusion seats 25 are mounted at the bottom of the telescopic frame 23, and the rubber extrusion seats 25 are sealed by contacting each other end to end. The rubber extrusion seats 25 are plastic, so the deformation of a single rubber extrusion seat 25 can ensure that the bottoms of the four rubber extrusion seats 25 fit the earthwork surface as closely as possible, thereby reducing dust from escaping from the dust shield 2. The filtering and heat dissipation components include a filter screen 35 mounted around the top of the compacting seat 3 and contacting the corresponding scraper frame 16, and also include It includes a force-bearing seat 31 installed at the bottom of the tamping seat 3 and in contact with the impact seat 43, and the air intake and exhaust components include a plurality of fans 5 arranged in the active cavity, one of the input ends of the fans 5 is connected with the active cavity through the inner cavity of the impact seat 43 and the inner cavity of the force-bearing seat 31, and the other two input ends of the fans 5 are opposite to the corresponding receiving mesh frame 18. The output end of the fan 5 is connected to the outside of the machine base 1, and the electromagnetic valves are installed at the connection between the fan 5 and the exhaust pipe 12 and the air intake pipe 51. The change of the air path of the fan 5 is realized by opening and closing the air electromagnetic valve.

[0042] Embodiment 2:

[0043] Reference Figure 1 , Figure 3-5, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: three connecting seats 11 distributed in a triangular shape are vertically fixedly installed on an outer wall of the machine base 1, and a plurality of exhaust pipes 12 are embedded and installed between the outer wall of the machine base 1 and the active cavity. The exhaust pipes 12 are routed from the inner corners of the machine base 1 and will not hinder the lifting impact seat 43 and the tamping seat 3. One end of the plurality of exhaust pipes 12 is connected to the corresponding input end of the fan 5, and the other end is opposite to the corresponding receiving mesh frame 18. The first limiting slide groove 15 is opened at the four inner corners of the active cavity. The four outer walls of the machine base 1 are fixedly installed with material receiving boxes 17, and the four material receiving boxes 17 are respectively arranged at the bottom of the corresponding scraper frames 16. The four material receiving net frames 18 are respectively embedded and placed in the corresponding material receiving boxes 17. The outer walls of the four material receiving net frames 18 are in contact with the inner cavity walls of the corresponding material receiving boxes 17, and the height of the material receiving net frames 18 is slightly lower than the height of the material receiving boxes 17, that is, the top height of the material receiving net frames 18 is slightly lower than the top height of the material receiving boxes 17, which is convenient for the material receiving net frames 18 to be taken out of the material receiving boxes 17, and the bottom ends of several exhaust pipes 12 are respectively fixedly connected to the corresponding ends of the material receiving boxes 17.

[0044] The remaining structures are the same as those of Example 1.

[0045] Embodiment 3:

[0046] Reference Figure 1-3 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: a square lifting opening 21 is provided at the bottom of the dust shield 2 for facilitating the lifting and sliding of the telescopic frame 23. Four second limiting grooves 22 are provided on two opposite inner cavity walls of the square lifting opening 21. Second limiting sliders 24 are fixedly installed at the center positions of the four outer walls and the four inner walls of the telescopic frame 23. Several second limiting sliders 24 are slidably installed in the corresponding second limiting grooves 22 respectively. Through the arrangement of the second limiting grooves 22 and the second limiting sliders 24, the telescopic frame 23 is always located in the square lifting opening 21 and will not fall out of the square lifting opening 21.

[0047] The remaining structure is the same as that of Example 2.

[0048] Embodiment 4:

[0049] Reference Figure 1 , 4-5, 7-8 are the fourth embodiment of the present invention, which is different from the third embodiment in that: first limit sliders 34 are fixedly installed at the four corners of the force-bearing seat 31, and the four first limit sliders 34 are slidably installed in the corresponding first limit slide grooves 15 respectively. The interior of the force-bearing seat 31 is hollow in design, and the four outer walls of the force-bearing seat 31 penetrate the inner cavity of the force-bearing seat 31 to open a plurality of first heat dissipation holes 32, and the top of the force-bearing seat 31 penetrates the inner cavity of the force-bearing seat 31 to open a plurality of second heat dissipation holes 33 to ensure smooth air flow inside and outside the force-bearing seat 31, a lifting cylinder 41 is fixedly installed in the machine base 1, and a lifting rod 42 is fixedly installed between the output end of the lifting cylinder 41 and the top center of the impact seat 43, and the interior of the impact seat 43 is also hollow in design, and the four outer walls and the lower bottom of the impact seat 43 A plurality of third heat dissipation holes 44 are provided through the inner cavity, and the third heat dissipation holes 44 are opposite to the second heat dissipation holes 33 to ensure that when the lower bottom of the impact seat 43 impacts the upper top of the force-bearing seat 31, the third heat dissipation holes 44 are connected with the second heat dissipation holes 33. A sealing cover 45 sleeved on the lifting rod 42 is fixedly installed on the top of the impact seat 43. A square hole matching the cross-section of the lifting rod 42 is provided through the middle of the sealing cover 45, and the sealing cover 45 is connected with the inner cavity of the impact seat 43. An air intake pipe 51 is connected between one of the input ends of the four fans 5 and the sealing cover 45. Therefore, when the fan 5 is started, the high-temperature air in the sealing cover 45, that is, the impact seat 43, is directly extracted through the air intake pipe 51. The other two output ends of the four fans 5 are respectively connected to the corresponding exhaust pipes 12.

[0050] The remaining structure is the same as that of Example 3.

[0051] Working principle of the present invention:

[0052] The first step is to connect the machine base 1 as a whole to the lifting end of a walking mechanism such as an excavator through the connecting seat 11, and cooperate with the excavator to realize the lifting and moving of the entire machine base, thereby realizing the compaction operation of the entire compaction site;

[0053] The second step is to place the machine base 1 on the compaction site by using an excavator. At this time, the bottom of the compaction seat 3 is in contact with the surface of the earth, and at this time, the four rubber extrusion seats 25 are all fitted on the compaction site around the compacted earth. At the same time, the four filter screens 35 on the top of the compaction seat 3 are respectively located at the corresponding air inlet 13, blocking the air inlet 13 at this location, and the surface of the filter screen 35 is fitted with the corresponding scraper frame 16. The lifting cylinder 41 is started to drive the lifting rod 42 and the impact seat 43 to rise in height, and then the lifting cylinder 41 is started. The impact seat 43 is pushed down quickly by the lifting rod 42 to hit the top of the force-bearing seat 31. After the force-bearing seat 31 is impacted, the compaction seat 3 is synchronously moved downward to achieve compaction of the earth. This is repeated many times to achieve compaction of the earth at this location.

[0054] During the compaction process, the compaction seat 3 repeatedly impacts the earthwork, causing the surrounding of the earthwork to vibrate, thereby causing dust to fly everywhere. However, since the entire compaction seat 3 is located in the dust shield 2 at this time, the dust is gathered in the dust shield 2, and since the four air inlets 13 are all provided with filter screens 35, the dust will not enter the machine base 1;

[0055] Due to the multiple collisions between the impact seat 43 and the force receiving seat 31, a large amount of heat will be generated by both, and since the impact seat 43 and the force receiving seat 31 are hollow inside, the heat is respectively gathered inside the impact seat 43 and the force receiving seat 31;

[0056] The third step is to start a plurality of fans 5 at the same time, close a plurality of exhaust pipes 12, and extract the air in the sealing cover 45, that is, the air in the impact seat 43, through the air inlet pipe 51, so that the internal pressure of the impact seat 43 is reduced, thereby extracting the air in the machine base 1 through the plurality of third heat dissipation holes 44, and when the force-bearing seat 31 is in contact with the impact seat 43, the plurality of third heat dissipation holes 44 are connected with the plurality of second heat dissipation holes 33, so the heat accumulated in the force-bearing seat 31 is also directly extracted, and the hot air extracted by the fans 5 will be discharged from the machine base 1 in a concentrated manner. As the air in the machine base 1 is continuously discharged, the pressure will gradually decrease. At this time, the air outside the machine base 1 and the air in the dust shield 2 will be continuously extracted through the four air inlets 13. The air contains a large amount of dust and impurities, which will be intercepted and blocked on the surface of the corresponding filter screen 35, and the air will pass through the filter screen 35 and replenish into the machine base 1, and will be discharged after the heat dissipation of the force-bearing seat 31 and the impact seat 43 is completed;

[0057] Of course, since the space outside the machine base 1 in the dust shield 2 is sealed by a plurality of split rubber extrusion seats 25, it is not completely sealed. Therefore, when the air in the space outside the machine base 1 in the dust shield 2 continuously enters the machine base 1, part of the air outside the dust shield 2 will also be supplemented and enter the dust shield 2 to ensure the air pressure balance.

[0058] In the fourth step, when the soil compaction is completed, the machine base 1 and the dust shield 2 are lifted upward by the excavator. At this time, the telescopic frame 23 will slide in the square lifting opening 21 to achieve relative movement with the dust shield 2. However, due to the sliding cooperation of the second limiting slide blocks 24 and the second limiting slide grooves 22, the telescopic frame 23 will not fall out of the square lifting opening 21. When the machine base 1 rises, the tamping seat 3 will also slide in the opening 14 to achieve relative movement with the machine base 1. However, due to the sliding cooperation of the first limiting slide grooves 15 and the first limiting slide blocks 34, the tamping seat 3 is always slidably installed in the opening 14 and will not fall out of the opening 14.

[0059] In the fifth step, along with the relative movement of the compacting seat 3 and the machine base 1, the four filter screens 35 installed on the top of the compacting seat 3 will slide relative to the corresponding scraper frame 16, so that the filter screens 35 slide vertically downward and the corresponding air inlet 13 is opened and exposed. In this process, the filter screens 35 will slide along the edge of the lower frame of the scraper frame 16, and the dust on the surface of the filter screens 35 will be scraped off by the scraper frame 16, and concentratedly fall into the receiving screen frame 18 in the receiving box 17. Some dust and impurities will also fall directly on the earthwork ground, but due to the small content, it will not affect the overall compaction effect of the earthwork;

[0060] In the sixth step, while the filter screen 35 is being scraped to remove impurities and dust, the fans 5 are started again, the air inlet pipes 51 are closed, and the air in the corresponding material receiving box 17 is directly extracted through the exhaust pipe 12. However, since the outer wall of the material receiving mesh frame 18 is in contact with the inner wall of the material receiving box 17 at this time, the exhaust pipe 12 will directly extract the air in the material receiving mesh frame 18, thereby forming a negative pressure suction port in the material receiving mesh frame 18, which can perform negative pressure suction on the scraped dust and impurities, thereby improving the collection effect of dust and impurities. When the earthwork site is completely compacted, the material receiving mesh frame 18 is directly taken out from the material receiving box 17, and the dust and impurities in the material receiving mesh frame 18 are cleaned.

[0061] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A soil backfilling compacting device for building construction, comprising a machine base (1), a movable cavity is provided in the machine base (1), air inlets (13) are provided around the machine base (1) and penetrate the movable cavity, an opening (14) is provided at the bottom of the machine base (1) and penetrates the movable cavity, a compacting seat (3) is installed in a lifting and sliding manner in the opening (14), an impact seat (43) for impacting the compacting seat (3) is installed in a lifting and sliding manner in the movable cavity, It is characterized in that Also includes: The scraper collection assembly comprises a scraper frame (16) respectively embedded in the corresponding air inlet (13), and also comprises a material collection net frame (18) respectively detachably mounted at a relative position to the bottom of the corresponding scraper frame (16); The dust shield assembly comprises a dust shield (2) fixedly mounted on a machine base (1), a telescopic frame (23) being telescopically and slidably mounted on the bottom of the dust shield (2), and four rubber extrusion seats (25) being mounted on the bottom of the telescopic frame (23) so as to abut against each other end to end to form a seal; The filtering and heat dissipation assembly comprises a filtering screen plate (35) installed around the top of the tamping seat (3) and in contact with the corresponding scraper frame (16), and also comprises a force bearing seat (31) installed at the bottom of the tamping seat (3) and in contact with the impact seat (43); An air intake and exhaust assembly comprises a plurality of fans (5) arranged in an active cavity, wherein one input end of the plurality of fans (5) is connected to the active cavity through an inner cavity of an impact seat (43) and an inner cavity of a force bearing seat (31), and the other two input ends of the plurality of fans (5) are opposite to corresponding positions of a receiving mesh frame (18), and the output end of the fans (5) is connected to the outside of the machine base (1).

2. The earth backfilling and compacting device for building construction according to claim 1, It is characterized in that Three connecting seats (11) distributed in a triangular shape are vertically fixedly installed on an outer wall of the machine base (1), and a plurality of exhaust pipes (12) are embedded and installed between the outer wall of the machine base (1) and the active cavity. One end of each of the exhaust pipes (12) is connected to the input end of the corresponding fan (5), and the other end is opposite to the corresponding receiving mesh frame (18).

3. The earth backfilling and compacting device for building construction according to claim 2, It is characterized in that The four inner cavity corners of the movable cavity are each provided with a first limiting sliding groove (15), the four outer side walls of the machine base (1) are each fixedly mounted with a material receiving box (17), and the four material receiving boxes (17) are respectively arranged at the bottom of the corresponding scraper frame (16).

4. The earth backfilling and compacting device for building construction according to claim 3, It is characterized in that The four material receiving net frames (18) are respectively embedded in the corresponding material receiving boxes (17), the outer walls of the four material receiving net frames (18) are in contact with the inner walls of the corresponding material receiving boxes (17), and the bottom ends of the plurality of exhaust pipes (12) are respectively fixedly connected to the ends of the corresponding material receiving boxes (17).

5. The earth backfilling and compacting device for building construction according to claim 1, It is characterized in that The bottom of the dust shield (2) is provided with a square lifting opening (21) for facilitating the lifting and sliding of the telescopic frame (23); four second limiting sliding grooves (22) are provided on two opposite inner cavity walls of the square lifting opening (21); second limiting sliding blocks (24) are fixedly installed at the center positions of the four outer walls and four inner walls of the telescopic frame (23); and a plurality of the second limiting sliding blocks (24) are respectively slidably installed in the corresponding second limiting sliding grooves (22).

6. The earth backfilling and compacting device for building construction according to claim 1, It is characterized in that First limiting slide blocks (34) are fixedly mounted at the four corners of the force bearing seat (31), and the four first limiting slide blocks (34) are respectively slidably mounted in corresponding first limiting sliding grooves (15).

7. The earth backfilling and compacting device for building construction according to claim 1, It is characterized in that The interior of the force-bearing seat (31) is hollow in design, and the four outer walls of the force-bearing seat (31) are all provided with a plurality of first heat dissipation holes (32) penetrating the inner cavity of the force-bearing seat (31), and the top end of the force-bearing seat (31) is provided with a plurality of second heat dissipation holes (33) penetrating the inner cavity of the force-bearing seat (31).

8. The earth backfilling and compacting device for building construction according to claim 7, It is characterized in that A lifting cylinder (41) is fixedly installed in the machine base (1), and a lifting rod (42) is fixedly installed between the output end of the lifting cylinder (41) and the top center of the impact seat (43). The interior of the impact seat (43) is also hollow. The four outer walls of the impact seat (43) and the inner cavity are all provided with a plurality of third heat dissipation holes (44). The third heat dissipation holes (44) located at the bottom are opposite to the second heat dissipation holes (33).

9. The earth backfilling and compacting device for building construction according to claim 8, It is characterized in that A sealing cover (45) sleeved on the lifting rod (42) is fixedly mounted on the top of the impact seat (43), and the sealing cover (45) is communicated with the inner cavity of the impact seat (43).

10. The earth backfilling and compacting device for building construction according to claim 9, It is characterized in that An air inlet pipe (51) is connected between one of the input ends of the four fans (5) and the sealing cover (45), and the other two output ends of the four fans (5) are respectively connected to the corresponding air extraction pipes (12).

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