Backfilling device for narrow fat groove space of deep foundation pit and construction method

Abstract

The invention relates to the technical field of building construction, in particular to a deep foundation pit narrow fertilizer groove space backfilling device and a construction method.The device comprises an advancing vehicle body, and the advancing vehicle body is provided with a hopper with an inclined outlet in the bottom end, a bracket arranged in the advancing direction in a sliding mode and a position adjusting mechanism used for driving the bracket to move; an earth ramming mechanism and a raking plate which act on foundation pit backfill earth are suspended below the bracket through a lifting mechanism. According to the device, through coordinated operation of various mechanisms, soil filling, scraping and tamping operations are ingeniously and orderly combined, a constructor can operate the device above a foundation pit, and the traveling vehicle body is convenient to travel and operate; the device is particularly suitable for deep and narrow fat groove space, the problem that constructors are inconvenient to go down to the foundation pit or the personal safety of the constructors is seriously affected by the foundation pit operation environment is solved, the labor cost is saved, the construction efficiency is improved, and the ubiquitous difficulty that the corners of the foundation pit cannot be tamped and filled in place in the industry is overcome.

Description

Technical Field

[0001] The invention relates to the field of building construction technology, in particular to a soil backfilling device for a narrow fertilizer trough space in a deep foundation pit and a construction method. Background Art

[0002] In construction, we often encounter the problem of limited space and difficulty in backfilling deep foundation pits. When compacting the soil, the working space is relatively small, which belongs to limited space operation. Construction workers climb up and down in the fertilizer tank, and the transportation and use of compaction machinery are subject to many space restrictions. These factors not only affect the construction efficiency of soil compaction, but also affect the personal safety of construction workers. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a device and a construction method for backfilling soil in a narrow fertilizer trough space in a deep foundation pit.

[0004] In the first aspect, the present invention provides a device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit, which adopts the following technical solution: A device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit comprises a traveling vehicle body, on which is provided a hopper with an oblique outlet at the bottom, a bracket slidingly arranged along the traveling direction, and a position adjusting mechanism for driving the bracket to move, and a tamping mechanism and a rake plate acting on the backfill soil in the foundation pit are suspended below the bracket through a lifting mechanism.

[0005] By adopting the above technical scheme, the device cleverly combines the filling, leveling and compacting operations in an orderly manner through the coordinated operation of multiple mechanisms. The construction workers can operate above the foundation pit, and the moving vehicle body is convenient for operation. The device is particularly suitable for deep and narrow fertilizer trough spaces, which solves the problem that it is inconvenient for construction workers to go down to the foundation pit or the foundation pit working environment seriously affects the personal safety of construction workers, saves labor costs, improves construction efficiency, and overcomes the difficulty that is common in the industry that the corners of the foundation pit cannot be compacted in place.

[0006] Optionally, the bracket includes at least two support rods 1 arranged in parallel, a sleeve 1 is sleeved on the outer side of the support rod 1, a sleeve 2 is slidably sleeved on the frame rod of the traveling frame, the sleeve 2 is vertically fixed to the sleeve 1, a support rod 1 is fixed between the same ends of the two support rods 1, a support rod 2 is fixed between the two sleeves 1, and a telescopic part is installed between the support rod 2 and the support rod 1.

[0007] By adopting the above technical solution, when the width of the fertilizer trough is relatively wide, the telescopic member can be controlled to change the positions of the tamping mechanism and the harrow plate, so that the soil in the width direction of the fertilizer trough can be tamped into place.

[0008] Optionally, the position adjustment mechanism includes a lead screw arranged parallel to the second sleeve, an ear plate is fixedly connected to the first sleeve, the lead screw thread is passed through the ear plate, the lead screw is rotatably connected to the traveling vehicle body and a driven sprocket one is installed at the end of the lead screw, a driving motor two is installed on the traveling vehicle body, a driving sprocket one is installed at the output end of the driving motor two, and a chain one is meshed between the driving sprocket one and the driven sprocket one.

[0009] By adopting the above technical solution, when encountering a corner position and the traveling vehicle body cannot move forward, it stops, and the construction personnel control the bracket to move forward through the position adjustment mechanism. When the bracket moves, the lifting mechanism drives the tamping mechanism and the rake plate to move forward synchronously to scrape and compact the soil. The casing one not only serves as a component that supports the support rod one and allows the support rod one to move inside it, but also can cooperate with the position adjustment mechanism to drive the support rod one to move forward and backward along the traveling vehicle body to control the position of the tamping mechanism and the rake plate.

[0010] Optionally, the tamping mechanism includes two vertically arranged guide rails, a hanging pipe is fixedly connected between the top ends of the two guide rails, a hanging ear is fixedly connected to the hanging pipe, and a tamping hammer and a driving assembly for raising the height of the tamping hammer are also arranged between the two guide rails.

[0011] By adopting the above technical solution, the driving assembly is used to drive the tamping hammer to move upward, and the tamping hammer falls by gravity to compact the soil. The tamping mechanism is cleverly and reasonably designed and is easy to hoist and lift.

[0012] Optionally, the driving assembly includes two fixed rods three that are fixed to the same guide rail and arranged up and down, the end of the upper fixed rod three is fixedly connected to a bearing seat, a rotating shaft is rotatably installed between the two bearing seats, a driving sprocket two is sleeved and fixedly connected to the rotating shaft, a fixed rod four is fixedly connected between the two lower fixed rods three, a driven sprocket two is installed on the fixed rod four through a bearing, a chain two is meshed between the driven sprocket two and the driving sprocket two, a shift rod is vertically fixedly connected to the chain two, a driving motor three is installed on the guide rail, a driving pulley is installed at the output end of the driving motor three, a belt is sleeved between the driving pulley and the driven pulley, a slide is slidably connected between the two guide rails, the slide is fixed to the top of the tamping hammer and intermittently built on the top of the shift rod.

[0013] By adopting the above technical scheme, the driving motor three transmits power to the shifting rod through the driving pulley, the belt, the driven pulley, the rotating shaft, the driving sprocket two and the chain two in sequence, so that the shifting rod moves with the movement of the chain two, and the shifting rod contacts the slide and pushes the slide to move upward. Since the slide is fixedly connected to the tamping hammer, the tamping hammer is driven to move upward. When the shifting rod is separated from the slide, the tamping hammer falls freely to compact the soil. The design of the driving component is ingenious and reasonable, which is convenient for intermittently lifting the tamping hammer so that the tamping hammer maintains a certain tamping frequency.

[0014] Optionally, the slide frame includes a slider slidably connected to the guide rail, a slide bar 1 is fixed between the two sliders, two slide bars 2 are vertically fixed on the slide bar 1, the slide bar 2 and the slide bar 1 are both fixed to the top of the tamping hammer, the chain 2 is passed through the gap between the two slide bars 2, and the slide bar 2 is intermittently mounted on the top of the lever.

[0015] By adopting the above technical solution, the lever pushes the two slide bars 2 to move upward, and the slide bars 2 and 1 define a stable vertical movement trajectory through the cooperation between the slider and the guide rail.

[0016] Optionally, at least two rows of ramming mechanisms are provided, each row includes multiple ramming mechanisms, and two adjacent ramming mechanisms belonging to the same row are connected by a support rod three that is detachably inserted through a hanging pipe and a positioning screw for fixing the support rod three, and two adjacent ramming mechanisms belonging to different rows are arranged alternately, and two rake plates are provided and located on both sides of the multiple rows of ramming mechanisms.

[0017] By adopting the above technical solution, during operation, the front and rear rows of tamping hammers fall cyclically to ensure that each position is tamped in place.

[0018] Optionally, the lifting mechanism includes a drive motor four installed on the bracket, the output end of the drive motor four is wrapped with a lifting rope, and the bottom end of the lifting rope is connected to the tamping mechanism or the rake plate.

[0019] By adopting the above technical solution, the driving motor controls the winding and releasing of the pulling rope, thereby changing the spatial height of the tamping mechanism and the rake plate. The lifting mechanism is easy to operate and has good stability.

[0020] Optionally, the moving vehicle body includes a frame, wheels, a bogie and a driving motor 1, the bogie includes two wheel mounting frames rotatably mounted on the front end of the frame, wheels are mounted on the wheel mounting frames and the frame, a fixing rod 1 is fixedly connected to the wheel mounting frame, a connecting rod is hinged on the fixing rod 1, a rack is hinged between the two connecting rods, a fixing rod 2 is fixedly connected to the frame, a transmission rod is vertically rotatably penetrated on the fixing rod 2, a gear meshing with the rack is mounted on the bottom end of the transmission rod, a steering wheel is mounted on the top end of the transmission rod, and a driving motor 1 is mounted on the wheel mounting frame and the output end is connected to the wheel.

[0021] By adopting the above technical solution, construction workers can control the forward direction of the moving vehicle through the bogie structure with a steering wheel. Once the driving motor drives the wheels to rotate, one construction worker can operate the soil filling and compaction operations, which effectively reduces labor costs and improves construction efficiency.

[0022] In a second aspect, the present invention provides a construction method for backfilling soil in a narrow fertilizer trough space in a deep foundation pit, which adopts the following technical solution: S1. Control the moving vehicle body to move forward and fill and compact the soil synchronously, which specifically includes: the construction personnel control the moving direction of the moving vehicle body, the soil is initially filled into the hopper, and then the hopper evenly spreads the soil into the fertilizer trough of the foundation pit, the rake plate first scrapes the soil flat, and the tamping mechanism then compacts the soil; S2. When encountering a corner position, adjust the tamping mechanism and the rake plate to the front end of the traveling vehicle body, specifically including: when the traveling vehicle body cannot move forward, stop, and the construction personnel control the bracket to move forward through the position adjustment mechanism, and when the bracket moves, the tamping mechanism and the rake plate are driven to move forward synchronously through the lifting mechanism to scrape and compact the soil; S3. If the fertilizer trough is wide, the tamping mechanism and the rake plate are adjusted to be close to or away from the traveling vehicle body, specifically including: the construction personnel control the extension and retraction of the telescopic member to drive the support rod 1 to move in the sleeve 1, thereby driving the tamping mechanism and the rake plate to move close to or away from the traveling vehicle body through the lifting mechanism, so that the soil material in the width direction of the fertilizer trough is tamped and filled in place; S4. As the filling soil becomes thicker, the tamping mechanism and the rake plate are controlled to be raised synchronously, specifically including: the construction personnel drive the tamping mechanism and the rake plate to move upward through the lifting mechanism, so as to dynamically adjust the spatial height of the tamping mechanism and the rake plate according to the thickness of the soil layer to adapt to the soil tamping operation.

[0023] In summary, the present invention includes at least one of the following beneficial technical effects: The device cleverly combines filling, leveling and compaction operations in an orderly manner through the coordinated operation of multiple mechanisms. Construction workers can operate it above the foundation pit, and the moving vehicle body is convenient for operation. The device is particularly suitable for deep and narrow fertilizer troughs. It solves the problem that it is inconvenient for construction workers to go down to the foundation pit or the working environment of the foundation pit seriously affects the personal safety of construction workers. It saves labor costs, improves construction efficiency, and overcomes the difficulty that is common in the industry that the corners of the foundation pit cannot be tamped in place. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to an embodiment of the present invention.

[0025] Figure 2 It is a schematic structural diagram of a bogie according to an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the assembly of the bracket and the position adjustment mechanism according to an embodiment of the present invention.

[0027] Figure 4 It is a schematic diagram of the assembly of the tamping mechanism, the rake plate and the lifting mechanism according to an embodiment of the present invention.

[0028] Figure 5 Schematic diagram of the structure of the tamping mechanism according to the embodiment of the present invention.

[0029] Description of the accompanying drawings: 1. traveling vehicle body; 10. vehicle frame; 11. wheel; 12. bogie; 120. wheel mounting frame; 121. fixing rod 1; 122. connecting rod; 123. rack; 124. fixing rod 2; 125. transmission rod; 126. gear; 127. steering wheel; 13. driving motor 1; 2. hopper; 3. bracket; 30. supporting rod 1; 31. sleeve 1; 32. sleeve 2; 33. supporting rod 1; 34. supporting rod 2; 35. telescopic member; 36. supporting rod 2; 4. position adjustment mechanism; 40. lead screw; 41. ear plate; 42. driven sprocket 1; 43. driving motor 2; 44. driving sprocket 1; 45. chain 1; 5. Ramming mechanism; 50, guide rail; 51, hanging pipe; 510, lifting ear; 511, supporting rod three; 512, positioning screw; 52, ramming hammer; 53, driving assembly; 530, fixing rod three; 5300, bearing seat; 5301, rotating shaft; 531, driving sprocket two; 532, driven pulley; 533, fixing rod four; 534, driven sprocket two; 535, chain two; 5350, shifting rod; 536, driving motor three; 537, driving pulley; 538, belt; 539, slide; 5390, sliding block; 5391, sliding rod one; 5392, sliding rod two; 6, rake plate; 7, lifting mechanism; 70, driving motor four; 71, pulling rope. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 5 The present invention is described in further detail.

[0031] The embodiment of the present invention discloses a device and construction method for backfilling soil in a narrow fertilizer trough space in a deep foundation pit. Figure 1 The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit comprises a traveling vehicle body 1, a hopper 2 arranged on the traveling vehicle body 1 for spreading soil materials, a bracket 3 arranged at the bottom of the traveling vehicle body 1, a position adjusting mechanism 4 for adjusting the position of the bracket 3, a tamping mechanism 5 for compacting the soil materials, a rake plate 6 for leveling the soil materials, and a lifting mechanism 7 for synchronously lifting the tamping mechanism 5 and the rake plate 6.

[0032] Reference Figure 1 and Figure 2 The traveling vehicle body 1 includes a frame 10, and four wheels 11 are arranged at the bottom of the frame 10. A bogie 12 is installed in front of the frame 10, and the bogie 12 includes two wheel mounting frames 120 rotatably mounted on the front end of the frame 10, two of the four wheels 11 are respectively mounted on the two wheel mounting frames 120, and the other two wheels 11 are mounted on the rear end of the frame 10.

[0033] Reference Figure 2A fixing rod 121 is fixedly connected to the front end of the wheel mounting frame 120, a connecting rod 122 is hingedly connected to the front end of the fixing rod 121, a rack 123 is hingedly connected between the two connecting rods 122, and two fixing rods 124 arranged up and down are fixedly connected to the front end of the frame 10, a transmission rod 125 is vertically rotated through the two fixing rods 124, a gear 126 for meshing with the rack 123 is installed at the bottom end of the transmission rod 125, a steering wheel 127 is installed at the top end of the transmission rod 125, and a driving motor 13 for driving the wheel 11 to rotate is installed on the wheel mounting frame 120.

[0034] Reference Figure 2 The construction worker turns the steering wheel 127, thereby driving the gear 126 to rotate through the transmission rod 125, and the gear 126 drives the rack 123 to move left and right. The rack 123 drives the wheel mounting frame 120 and the wheel 11 to turn through the connecting rod 122 and the fixing rod 121, thereby controlling the moving direction of the moving vehicle body 1.

[0035] Reference Figure 1 and Figure 3 The hopper 2 is fixedly mounted on the vehicle frame 10. The bottom end of the hopper 2 is designed with an oblique outlet. If the position is not suitable, an extended hopper can be added. The bracket 3 includes two support rods 30 arranged perpendicular to the traveling direction of the moving vehicle body 1. A sleeve 31 is sleeved on the outer side of the support rod 30. A sleeve 2 32 is slidably sleeved on the frame rod of the vehicle frame 10. The sleeve 2 32 is vertically fixed to the sleeve 1 31. A support rod 1 33 is vertically fixed between the same ends of the two support rods 30. A support rod 2 34 is vertically fixed between the middle parts of the two sleeves 31.

[0036] Reference Figure 3 A telescopic member 35 is installed between the support rod 2 34 and the support rod 1 33 for driving the support rod 1 33 to move closer to or away from the support rod 2 34. The telescopic member 35 in this embodiment is an electric push rod. In other embodiments, a hydraulic cylinder or a pneumatic cylinder can also be used. Three support rods 2 36 are vertically fixed between the other ends of the two support rods 1 30. The construction personnel control the telescopic member 35 to drive the support rod 1 30 to move in the sleeve 1 31, thereby driving the tamping mechanism 5 and the rake plate 6 to move along the width direction of the fertilizer trough through the lifting mechanism 7, so that each part of the fertilizer trough is tamped and filled in place.

[0037] Reference Figure 2 and Figure 3The position adjustment mechanism 4 includes a lead screw 40 arranged in parallel with the second sleeve 32, a lug plate 41 is fixedly connected to the top surface of the middle part of the sleeve 1 31, and the lead screw 40 is threadedly penetrated through the two lug plates 41. One end of the lead screw 40 is rotatably connected to the front end of the frame 10, and the other end of the lead screw 40 is rotatably connected to the rear end of the frame 10 and a driven sprocket 1 42 is installed at the end, a driving motor 2 43 is installed at the rear end of the frame 10, and a driving sprocket 1 44 is installed at the output end of the driving motor 2 43, and a chain 1 45 is meshed between the driving sprocket 1 44 and the driven sprocket 1 42.

[0038] Reference Figure 3 The construction personnel control the driving motor 2 43, and the driving motor 2 43 transmits power to the ear plate 41, the sleeve 1 31 and the sleeve 2 32 through the active sprocket 1 44, the chain 1 45, the driven sprocket 1 42 and the screw 40 in sequence, thereby driving the lifting mechanism 7 to drive the tamping mechanism 5 and the rake plate 6 to move forward and backward along the frame 10, so that when encountering the corner position, when the device as a whole cannot reach the top, it is ensured that the tamping mechanism 5 and the rake plate 6 can move into place to tamp and compact the soil at the corner position.

[0039] Reference Figure 4 and Figure 5 The tamping mechanism 5 includes two vertically arranged guide rails 50, a hanging pipe 51 is vertically fixed between the top ends of the two guide rails 50, a hanging ear 510 is fixed at the middle of the top end of the hanging pipe 51, a support rod 3 511 is detachably inserted into the hanging pipe 51, and the support rod 3 511 is fixed to the hanging pipe 51 by a positioning screw 512. By setting the support rod 3 511, multiple tamping mechanisms 5 can be connected in series. A tamping hammer 52 and a driving assembly 53 for driving the tamping hammer 52 to lift upward are also arranged between the two guide rails 50.

[0040] Reference Figure 5 The driving assembly 53 includes a fixing rod 3 530. Two fixing rods 3 530 arranged in an upper and lower manner are fixedly connected to each guide rail 50. A bearing seat 5300 is fixedly connected to the end of the fixing rod 3 530 located at the top. A rotating shaft 5301 is rotatably installed between the two bearing seats 5300. A driving sprocket 2 531 is sleeved and fixed on the rotating shaft 5301. A driven pulley 532 is installed at the end of the rotating shaft 5301. A fixing rod 4 533 is vertically fixedly connected between the two fixing rods 3 530 located at the bottom. A driven sprocket 2 534 is rotatably sleeved on the fixing rod 4 533 through a bearing. A chain 2 535 is meshed between the driven sprocket 2 534 and the driving sprocket 2 531.

[0041] Reference Figure 5, a driving motor 3 536 is installed on the other side of the guide rail 50, a driving pulley 537 is installed on the output end of the driving motor 3 536, and a belt 538 is sleeved between the driving pulley 537 and the driven pulley 532. A slide 539 is slidably connected between the two guide rails 50, and the slide 539 includes a slider 5390 vertically slidably connected to the guide rail 50, a slide bar 1 5391 is fixed between the two sliders 5390, and two slide bars 2 5392 are vertically fixed to the middle of the slide bar 1 5391, and the slide bars 2 5392 and the slide bar 1 5391 are both fixed to the top of the tamping hammer 52, and the chain 2 535 is passed through the gap between the two slide bars 2 5392, and a lever 5350 is vertically fixed on the chain 2 535, and the slide bar 2 5392 is intermittently mounted on the top of the lever 5350, so that the tamping hammer 52 is lifted to a certain height and then falls down through the transmission of the chain 2 535.

[0042] Reference Figure 1 and Figure 4 The three tamping mechanisms 5 are arranged in a row, and there are two rows in total. The adjacent two tamping mechanisms 5 in different rows are arranged in a staggered manner to complement the gap between the adjacent two tamping mechanisms 5 in the same row. During operation, the front and rear rows of tamping hammers 52 fall cyclically to ensure that each position is filled in place. Two rake plates 6 are provided and are located on both sides of the two rows of tamping mechanisms 5. The rake plates 6 use gravity to comb the piled soil flat so that the tamping mechanisms 5 can better tamp the soil.

[0043] Reference Figure 1 and Figure 4 The lifting mechanism 7 includes a driving motor 4 70 installed on three supporting rods 2 36. Four driving motors 4 70 are arranged side by side, and the two driving motors 4 70 located in the middle are staggered. A lifting rope 71 is wound around the output end of the driving motor 4 70. The lifting rope 71 can be a steel wire rope. The bottom end of the lifting rope 71 is connected to the lifting ear 510 or the rake plate 6.

[0044] The method for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to an embodiment of the present invention comprises the following steps: S1, control the traveling vehicle body 1 to move forward, and fill and compact the soil synchronously, specifically including: the construction personnel control the driving motor 13 to drive the traveling vehicle body 1 to move forward, and control the moving direction of the traveling vehicle body 1 through the steering wheel 127. The soil is initially sent into the hopper 2 by a forklift or an excavator, and then evenly spread into the foundation pit fertilizer trough by the hopper 2. The rake plate 6 first scrapes the soil flat, and the tamping mechanism 5 then compacts the soil.

[0045] S2. When encountering a corner position, adjust the tamping mechanism 5 and the rake plate 6 to the front end of the frame 10, specifically including: when the moving vehicle body 1 cannot move forward, it stops, and the construction personnel control the bracket 3 to move forward through the position adjustment mechanism 4. When the bracket 3 moves, the tamping mechanism 5 and the rake plate 6 are driven to move forward synchronously through the lifting mechanism 7 to scrape and compact the soil.

[0046] S3. If the fertilizer trough is wide, the tamping mechanism 5 and the rake plate 6 are adjusted to be closer to or farther from the frame 10, specifically including: the construction personnel control the extension and retraction of the telescopic member 35 to drive the support rod 30 to move in the sleeve 31, thereby driving the tamping mechanism 5 and the rake plate 6 to move closer to or farther from the frame 10 through the lifting mechanism 7, so that the soil in the width direction of the fertilizer trough is tamped and filled in place; the sleeve 31 is not only used as a component to support the support rod 30 and allow the support rod 30 to move inside it, but also can cooperate with the position adjustment mechanism 4 to drive the support rod 30 to move forward and backward along the frame 10 to control the position of the tamping mechanism 5 and the rake plate 6.

[0047] S4. As the filling soil becomes thicker, the tamping mechanism 5 and the rake plate 6 are controlled to be raised synchronously, specifically including: the construction personnel control the driving motor 4 70 to drive the pulling rope 71 to reel in, and the pulling rope 71 drives the tamping mechanism 5 and the rake plate 6 to move upward, so as to dynamically adjust the spatial height of the tamping mechanism 5 and the rake plate 6 according to the thickness of the soil layer to adapt to the soil tamping operation.

[0048] The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit of the present invention cleverly combines the backfilling, leveling and compacting operations in an orderly manner through the coordinated operation of multiple mechanisms. The construction personnel can operate above the foundation pit, and the traveling vehicle body 1 is convenient for walking and operation. The device is particularly suitable for deep and narrow fertilizer trough spaces, which solves the problem that it is inconvenient for construction personnel to go down to the foundation pit or the working environment of the foundation pit seriously affects the personal safety of construction personnel, saves labor costs, improves construction efficiency, and overcomes the difficulty that the corners of the foundation pit cannot be compacted and filled in place, which is common in the industry.

[0049] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for backfilling soil in a narrow fertilizer trough in a deep foundation pit, characterized in that: The invention comprises a traveling vehicle body (1), on which is arranged a hopper (2) with an oblique outlet at the bottom end, a bracket (3) arranged to slide along the traveling direction, and a position adjustment mechanism (4) for driving the bracket (3) to move; a tamping mechanism (5) and a rake plate (6) for acting on the backfill soil of the foundation pit are suspended below the bracket (3) via a lifting mechanism (7).

2. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to claim 1 is characterized in that: The bracket (3) comprises at least two support rods (30) arranged in parallel, a sleeve (31) is sleeved on the outer side of the support rod (30), a sleeve (32) is slidably sleeved on the frame rod of the traveling frame (10), the sleeve (32) is vertically fixedly connected to the sleeve (31), a support rod (33) is fixedly connected between the same ends of the two support rods (30), a support rod (34) is fixedly connected between the two sleeves (31), and a telescopic member (35) is installed between the support rod (34) and the support rod (33).

3. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to claim 2 is characterized in that: The position adjustment mechanism (4) comprises a lead screw (40) arranged in parallel with the second sleeve (32); an ear plate (41) is fixedly connected to the first sleeve (31); the lead screw (40) is threadedly inserted into the ear plate (41); the lead screw (40) is rotatably connected to the traveling vehicle body (1) and a driven sprocket wheel (42) is installed at the end of the lead screw (40); a driving motor (43) is installed on the traveling vehicle body (1); a driving sprocket wheel (44) is installed at the output end of the driving motor (43); a chain (45) is meshed between the driving sprocket wheel (44) and the driven sprocket wheel (42).

4. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to claim 1 is characterized in that: The tamping mechanism (5) comprises two vertically arranged guide rails (50), a hanging pipe (51) is fixedly connected between the top ends of the two guide rails (50), a hanging ear (510) is fixedly connected to the hanging pipe (51), and a tamping hammer (52) and a driving assembly (53) for raising the height of the tamping hammer (52) are also arranged between the two guide rails (50).

5. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to claim 4 is characterized in that: The driving assembly (53) comprises two fixing rods (530) fixedly connected to the same guide rail (50) and arranged up and down, the end of the fixing rod (530) located at the top is fixedly connected to a bearing seat (5300), a rotating shaft (5301) is rotatably mounted between the two bearing seats (5300), a driving sprocket (531) is sleeved and fixedly mounted on the rotating shaft (5301), a fixing rod (533) is fixedly connected between the two fixing rods (530) located at the bottom, a driven sprocket (534) is mounted on the fixing rod (533) through a bearing, and the driven sprocket (534) is ) is meshed with a second chain (535) and a second driving sprocket (531), a lever (5350) is vertically fixedly connected to the second chain (535), a driving motor (536) is installed on the guide rail (50), a driving pulley (537) is installed at the output end of the driving motor (536), a belt (538) is sleeved between the driving pulley (537) and the driven pulley (532), a slide (539) is slidably connected between the two guide rails (50), the slide (539) is fixedly connected to the top of the tamping hammer (52) and intermittently mounted on the top of the lever (5350).

6. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to claim 5 is characterized in that: The slide frame (539) includes a slider (5390) slidably connected to the guide rail (50), a slide bar 1 (5391) is fixedly connected between the two sliders (5390), two slide bars 2 (5392) are vertically fixedly connected to the slide bar 1 (5391), the slide bars 2 (5392) and the slide bar 1 (5391) are both fixedly connected to the top of the tamping hammer (52), the chain 2 (535) is passed through the gap between the two slide bars 2 (5392), and the slide bars 2 (5392) are intermittently mounted on the top of the shifting rod (5350).

7. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to any one of claims 4 to 6, characterized in that: The tamping mechanisms (5) are arranged in at least two rows, each row comprising a plurality of tamping mechanisms (5); two adjacent tamping mechanisms (5) belonging to the same row are connected via a detachable support rod (511) inserted through a hanging pipe (51) and a positioning screw (512) for fixing the support rod (511); two adjacent tamping mechanisms (5) belonging to different rows are arranged in an alternating manner; two rake plates (6) are arranged and are located on both sides of the rows of tamping mechanisms (5).

8. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to claim 1 is characterized in that: The lifting mechanism (7) comprises a driving motor (70) mounted on the bracket (3), the output end of the driving motor (70) is wound with a lifting rope (71), and the bottom end of the lifting rope (71) is connected to the tamping mechanism (5) or the rake plate (6).

9. The device for backfilling soil in a narrow fertilizer trough space in a deep foundation pit according to claim 1, characterized in that: The traveling vehicle body (1) comprises a vehicle frame (10), wheels (11), a bogie (12) and a driving motor (13); the bogie (12) comprises two wheel mounting frames (120) rotatably mounted on the front end of the vehicle frame (10); the wheels (11) are mounted on the wheel mounting frames (120) and the vehicle frame (10); a fixing rod (121) is fixedly connected to the wheel mounting frame (120); a connecting rod (122) is hingedly connected to the fixing rod (121); the two connecting rods A rack (123) is hinged between the two wheels (122), a fixing rod (124) is fixedly connected to the vehicle frame (10), a transmission rod (125) is vertically rotatably passed through the fixing rod (124), a gear (126) meshing with the rack (123) is installed at the bottom end of the transmission rod (125), a steering wheel (127) is installed at the top end of the transmission rod (125), and a driving motor (13) is installed on the wheel mounting frame (120) and the output end is connected to the wheel (11).

10. A construction method for a deep foundation pit narrow fertilizer trough space backfill device as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, controlling the moving vehicle body (1) to move forward and simultaneously filling and compacting the soil, specifically including: the construction personnel controlling the moving direction of the moving vehicle body (1), filling the soil into the hopper (2) in the early stage, and then evenly spreading the soil from the hopper (2) into the fertilizer trough of the foundation pit, the rake plate (6) first scrapes the soil flat, and then the tamping mechanism (5) compacts the soil; S2. When encountering a corner position, the tamping mechanism (5) and the rake plate (6) are adjusted to the front end of the traveling vehicle body (1), specifically including: when the traveling vehicle body (1) cannot move forward, it stops, and the construction personnel control the bracket (3) to move forward through the position adjustment mechanism (4), and when the bracket (3) moves, the tamping mechanism (5) and the rake plate (6) are driven to move forward synchronously through the lifting mechanism (7), so as to scrape and compact the soil; S3. If the fertilizer trough is relatively wide, the tamping mechanism (5) and the rake plate (6) are adjusted to move closer to or farther from the traveling vehicle body (1), specifically comprising: the construction personnel control the extension and retraction of the telescopic member (35) to drive the support rod (30) to move in the sleeve (31), thereby driving the tamping mechanism (5) and the rake plate (6) to move closer to or farther from the traveling vehicle body (1) through the lifting mechanism (7), so that the soil in the width direction of the fertilizer trough is tamped and filled in place; S4. As the filling soil becomes thicker, the tamping mechanism (5) and the rake plate (6) are controlled to be raised synchronously, specifically comprising: the construction personnel drive the tamping mechanism (5) and the rake plate (6) to move upwards through the lifting mechanism (7), so as to dynamically adjust the spatial height of the tamping mechanism (5) and the rake plate (6) according to the thickness of the soil layer, so as to adapt to the soil tamping operation.

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