CN115853050A - Backfill device and backfill method for municipal wet-soft narrow fertilizer tank foundation pit - Google Patents

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit. This municipal administration is backfill device and backfill method for wet soft narrow fat groove foundation ditch, through setting up filtering and screening mechanism, play and filter the clod size of backfilling, improve the density of backfilling through chooseing for use less clod cooperation, reduce the space between the clod, avoided appearing wet soft sinking after the follow-up tamping, thereby improve construction quality, and through the locating lever, the cooperation of buffering blade and arc buffer block reduces the speed of rolling off of clod when the screening, abundant screens qualified clod, thereby the effect of screening quality has been improved.

Description

Backfill device and backfill method for municipal wet-soft narrow fertilizer tank foundation pit

Technical Field

The invention relates to the technical field of building construction, in particular to a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit.

Background

At present, along with the development of the urbanization process of China, the urban population number is obviously increased, in order to meet the living and working requirements of people, more and more super high-rise buildings appear, along with the development of the super high-rise buildings, the number of deep foundation pit projects is also increased day by day, meanwhile, as the urban land limit and the building space tend to be dense, a plurality of newly-built projects are positioned among old buildings, and the site in a city area is narrow and small, so that a design unit has to compress the distance between a foundation pit and a basement outer wall, the construction space is narrow and complex, large mechanical equipment cannot assist in construction, and the difficulty of backfilling a fertilizer tank is caused.

When the existing fertilizer groove foundation pit is backfilled in actual construction, the construction space is narrow and small due to the fact that the building is dense, generally, a cart is used manually to pour broken soil blocks into the fertilizer groove for backfilling, the method is large in labor force, the soil blocks can fall along the edge of the fertilizer groove easily, sharp objects such as stones can be avoided in the soil blocks, the water resistance of the outer wall of a basement is damaged easily in the process of falling, the soil blocks are broken, but the broken soil blocks are different in size, the fertilizer groove is not uniformly backfilled, backfilling gaps are increased easily, although the backfilling is completed, the backfilling is tamped through a tamping hammer, the backfilled soil blocks are prone to being wet, soft and sunken after rainwater pouring, and therefore the construction quality is lowered.

Disclosure of Invention

The invention provides a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit, which are based on the technical problems that the existing fertilizer groove foundation pit is narrow in space during construction, time and labor are wasted when soil blocks are manually poured, water resistance of an outdoor wall is easily damaged, the backfilled soil blocks are different in size, a backfilling gap is easily large, and tamping and compaction are difficult to follow-up, so that wet soft sinking is easily caused after rainwater irrigation, and the construction quality is reduced.

The backfill device for the municipal wet soft narrow fertilizer groove foundation pit comprises a hopper, wherein a filtering and screening mechanism is arranged in the hopper, the filtering and screening mechanism comprises a steel wire screen, soil blocks with proper sizes are filtered through the filtering and screening mechanism, and larger soil blocks are screened to be subjected to rolling recovery movement;

adjusting mechanisms are arranged on the surfaces of the two sides of the hopper, each adjusting mechanism comprises a bidirectional screw rod, the adjusting mechanisms are positioned on the two sides of the filtering and screening mechanism, and relative movement adjustment according to the width of a foundation pit of the construction fertilizer groove is realized through the adjusting mechanisms;

the lower surface of hopper is provided with the defeated material mechanism of swing, the defeated material mechanism of swing includes corrugated hose, the defeated material mechanism of swing is located filter screening mechanism below, through the defeated material mechanism of swing realizes carrying out the swing adjustment to the falling point of backfilling soil block in the fertilizer groove foundation ditch.

Preferably, the surface of steel wire screen cloth with the inner wall of hopper is fixed to be cup jointed, the bin outlet has been seted up to a side surface of hopper, a side fixed surface of hopper is connected with arc guide block, the last fixed surface of steel wire screen cloth is connected with arc buffer block, the both ends of arc buffer block respectively with the both sides inner wall fixed connection of hopper, the both sides inner wall of hopper passes through bearing installation locating lever.

Preferably, the surface of the positioning rod is fixedly connected with buffer blades which are symmetrically distributed, the adjusting mechanism further comprises supporting blocks, the inclined planes of the two supporting blocks are fixedly connected with the inclined planes on the two sides of the hopper respectively, the two ends of the supporting blocks are fixedly connected with guide blocks which are symmetrically distributed, one ends of the guide blocks are fixedly connected with limiting blocks, and guide sleeves are movably sleeved on the outer surfaces of the guide blocks.

Preferably, the lower fixed surface of uide bushing is connected with the outer sleeve, the inner sleeve has been cup jointed in the inner wall activity of outer sleeve, the interior diapire fixed mounting of inner sleeve has the pneumatic cylinder, the one end of pneumatic cylinder piston rod with the interior roof fixed connection of outer sleeve, the lower fixed surface of inner sleeve installs the auto-lock universal wheel, two the relative fixed surface of outer sleeve is connected with the screw sleeve that is the symmetric distribution.

Preferably, the inner walls of the two threaded sleeves are respectively in threaded sleeve connection with the outer surfaces of two ends of the bidirectional screw rod, a driving disc is fixedly sleeved on the outer surface of the bidirectional screw rod, one end of the corrugated hose is fixedly communicated with the inner bottom wall of the hopper, and the other end of the corrugated hose is fixedly connected with a swing hard tube.

Preferably, the outer fixed surface of swing hard tube is connected with the hangers that are the symmetric distribution, flange fixed mounting is passed through to the one end of swing hard tube has the extension pipe, the lower fixed surface of hopper is fixedly connected with the fixed block that is the symmetric distribution, the mounting hole has been seted up in the front of fixed block, the inner wall of mounting hole passes through the bearing and installs the swinging arms.

Preferably, the one end of swinging arms with the outer fixed surface of swing hard tube is connected, the both sides fixed surface of hopper is connected with the mounting bracket that is the symmetric distribution, the bull stick is installed through the bearing to the inner wall of mounting bracket, the one end of bull stick runs through and extends to the front of mounting bracket, the outer fixed surface of bull stick has cup jointed the rolling frame.

Preferably, the inner wall of the winding frame is wound and connected with a steel wire rope, one end of the steel wire rope is fixedly connected with a movable ring, the inner wall of the movable ring is movably sleeved with the inner wall of the hanging lug, a turbine is fixedly sleeved on the outer surface of one of the rotating rods, and a chain wheel is fixedly sleeved on the outer surface of the rotating rod.

Preferably, the chain belt, one of them have been cup jointed in the surface transmission of sprocket the last fixed surface of mounting bracket is connected with the mounting panel, the last fixed surface of mounting panel installs servo motor, servo motor's output shaft passes through shaft coupling fixed mounting has the worm, the surface of worm with the flank of tooth meshing of turbine.

Preferably, a backfilling method of the backfilling device for the municipal wet soft narrow fertilizer groove foundation pit is provided, and the backfilling method specifically comprises the following steps: observing the width of a fertilizer groove to be backfilled, simultaneously clockwise rotating two driving discs, driving a bidirectional screw rod to rotate by the driving discs, driving two outer sleeves to move backwards through the matching of threaded sleeves, stably driving the inner sleeves and a self-locking universal wheel to move through the matching of a guide sleeve and a guide block by the outer sleeves, and stopping rotating after moving to a proper width;

moving the hopper to a position of a fertilizer groove to be backfilled through the matching of the self-locking universal wheels, locking and limiting the self-locking universal wheels, starting the hydraulic cylinder to perform stretching motion, driving the hopper to ascend and move through the matching of the outer sleeve, stopping the motion after the hopper ascends to a certain height, connecting the plurality of sections of extension pipes through flanges according to the depth of the fertilizer groove, and starting the hydraulic cylinder to perform contraction motion after the connection is completed so that the hopper drives the extension pipes to stretch into the fertilizer groove;

feeding the crushed soil blocks through an external small screw feeder, conveying the soil blocks into a hopper, enabling the soil blocks to fall above an inclined steel wire screen after entering the hopper, screening the soil blocks with proper sizes through the steel wire screen, screening out larger soil blocks, rolling the larger soil blocks through the inclined steel wire screen, extruding a buffer blade, enabling the buffer blade to rotate in cooperation with a positioning rod, and enabling the proper soil blocks to be fully screened after the buffer speed limit of an arc-shaped buffer block;

step four, finally, the larger soil blocks fall into the arc-shaped material guide blocks through the discharge port, the larger soil blocks are conveyed into a container prepared in advance through the inclined arc-shaped material guide blocks, the larger soil blocks are convenient to grind again for subsequent use, the soil blocks with proper sizes enter the bottom of the hopper through a steel wire screen, are conveyed to the swing hard pipe through a corrugated hose, and are conveyed to the bottom of the fertilizer tank through an extension pipe for backfilling;

and step five, in order to avoid accumulation at one position during soil block backfilling, a hopper and a soil block conveying device need to be frequently moved, a servo motor is started to drive a worm to rotate clockwise, the worm is matched with a meshed turbine to drive one rotating rod to rotate, the rotation of one rotating rod drives two winding frames to synchronously rotate through the matching of a chain wheel and a chain belt, a steel wire rope on one winding frame is wound and tensioned, a steel wire rope on the other winding frame is unwound and stretched, a swinging hard pipe is driven to swing through the matching of a movable ring and a hanging lug, the swinging hard pipe drives an extension pipe to swing through the matching bending of a corrugated hose, and therefore soil blocks are conveyed to different positions in a fertilizer groove, otherwise, the worm rotates anticlockwise, and the extension pipe is driven to swing towards the other direction.

The beneficial effects of the invention are as follows:

1. through setting up filtering and screening mechanism, play and screen the clod size of backfilling, improve the density of backfilling through chooseing for use less clod cooperation, reduce the space between the clod, avoided appearing wet soft settlement after the follow-up tamping to improve construction quality, and through the locating lever, the cooperation of buffering blade and arc buffer block reduces the roll-off speed of clod when the screening, abundant screens qualified clod, thereby the effect of screening quality has been improved.

2. Through setting up adjustment mechanism, play the fat groove width of being convenient for according to actual construction and adjust, be applicable to and backfill the use to the fat groove of different width, application scope is wider, and the practicality is high, and plays the installation of being convenient for to the extension pipe through the lifting to the hopper, and convenient operation not only improves work efficiency, and directly carries the soil block to fertile tank bottoms portion through the extension pipe, to the waterproof effect of carrying out the protection of outer wall.

3. Through setting up swing feeding mechanism, play automatic through the swing hard tube drive extension pipe swing, carry the clod of backfilling to fertile inslot different positions, make its clod backfill evenly to avoided equipment need frequently remove, not only reduced the hand labor power, and improved the effect of backfilling efficiency.

Drawings

FIG. 1 is a schematic diagram of a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit;

FIG. 2 is a perspective view of a hopper structure of a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit;

FIG. 3 is an enlarged view of a structure at the position A in FIG. 2 of the backfilling device and the backfilling method for the municipal wet soft narrow fertilizer groove foundation pit;

FIG. 4 is a perspective view of a steel wire mesh structure of a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit;

FIG. 5 is a perspective view of a support block structure of a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit;

FIG. 6 is a perspective view of an inner sleeve structure of the backfilling device and the backfilling method for the municipal wet soft narrow fertilizer groove foundation pit;

FIG. 7 is a perspective view of a corrugated hose structure of a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit;

FIG. 8 is a perspective view of an installation rack structure of a backfilling device and a backfilling method for a municipal wet soft narrow fertilizer groove foundation pit.

In the figure: 1. a hopper; 2. a steel wire screen; 21. an arc-shaped material guide block; 22. an arc-shaped buffer block; 23. positioning a rod; 24. buffering the blade; 3. a bidirectional screw rod; 31. a supporting block; 32. a guide block; 33. a limiting block; 34. a guide sleeve; 35. an outer sleeve; 36. an inner sleeve; 37. a hydraulic cylinder; 38. a self-locking universal wheel; 39. a threaded sleeve; 310. a drive disc; 4. a corrugated hose; 41. swinging the hard tube; 42. hanging a lug; 43. an extension tube; 44. a fixed block; 45. a swing lever; 46. a mounting frame; 47. a rotating rod; 48. a winding frame; 49. a wire rope; 410. a movable ring; 411. a turbine; 412. a sprocket; 413. a chain belt; 414. mounting a plate; 415. a servo motor; 416. a worm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example one

Referring to fig. 1-8, the backfilling device for the municipal wet soft narrow fertilizer groove foundation pit and the backfilling method comprise a hopper 1, wherein a filtering and screening mechanism is arranged inside the hopper 1, the filtering and screening mechanism comprises a steel wire screen 2, soil blocks with proper sizes are filtered through the filtering and screening mechanism, and larger soil blocks are screened and subjected to rolling recovery movement;

adjusting mechanisms are arranged on the surfaces of the two sides of the hopper 1 and comprise bidirectional screw rods 3, the adjusting mechanisms are positioned on the two sides of the filtering and screening mechanism, and relative movement adjustment is realized according to the width of a foundation pit of the construction fertilizer groove through the adjusting mechanisms;

the lower surface of hopper 1 is provided with the defeated material mechanism of swing, and the defeated material mechanism of swing includes corrugated hose 4, and the defeated material mechanism of swing is located and filters screening mechanism below, realizes carrying out the swing adjustment to the falling point of backfilling soil block in the fertilizer groove foundation ditch through the defeated material mechanism of swing.

Further, in order to realize improving the screening efficiency, steel wire screen 2's surface cup joints with hopper 1's inner wall is fixed, the bin outlet has been seted up to hopper 1's a side surface, one side fixed surface of hopper 1 is connected with arc guide block 21, steel wire screen 2 selects the back with great soil block, the soil block rolls to arc guide block 21 in through the bin outlet through the rolling force of slope, and the slope installation of arc guide block 21, make in its collection container that rolls once more, thereby be convenient for follow-up repeated crushing and use, steel wire screen 2's last fixed surface is connected with arc buffer block 22, arc buffer block 22 plays and cushions rolling soil block, avoid too much soil block to pile up and roll, thereby realize the effect of abundant screening, arc buffer block 22's both ends respectively with hopper 1's both sides inner wall fixed connection, hopper 1's both sides inner wall passes through bearing installation locating lever 23.

Through setting up filtering screening mechanism, play and filter the clod size of backfilling, improve the density of backfilling through chooseing for use less clod cooperation, reduce the space between the clod, wet soft sinking has been avoided appearing after the follow-up tamping, thereby improve construction quality, and through locating lever 23, buffering blade 24 reduces the speed of falling of clod when the screening with arc buffer block 22's cooperation, abundant screens qualified clod, thereby the effect of screening quality has been improved.

Further, in order to realize spacing regulation, the fixed surface of locating lever 23 is the buffering blade 24 of symmetric distribution, locating lever 23 fixes a position the rotation through the soil block to buffering blade 24's extrusion force, thereby further roll-off to the soil block carries out the speed slowing, improve the effect of screening efficiency, adjustment mechanism still includes supporting shoe 31, the inclined plane of two supporting shoes 31 respectively with the both sides inclined plane fixed connection of hopper 1, the both ends fixedly connected with of supporting shoe 31 is the guide block 32 of symmetric distribution, the one end fixedly connected with stopper 33 of guide block 32, the surface activity of guide block 32 has cup jointed uide bushing 34, uide bushing 34 plays and leads along guide block 32 and removes, and it removes the restriction through stopper 33's cooperation is spacing.

Further, in order to increase the application range and improve the practicability, the lower fixed surface of the guide sleeve 34 is connected with the outer sleeve 35, the inner sleeve 36 is movably sleeved on the inner wall of the outer sleeve 35, the guide sleeve 34 is moved to drive the inner sleeve 36 to move through the outer sleeve 35, thereby increasing the equipment width of the guide sleeve, the fertilizer tank suitable for different widths is used, the inner bottom wall of the inner sleeve 36 is fixedly provided with the hydraulic cylinder 37, one end of the piston rod of the hydraulic cylinder 37 is fixedly connected with the inner top wall of the outer sleeve 35, the hydraulic cylinder 37 is matched with the inner sleeve 36 to drive the outer sleeve 35 to lift, the lower fixed surface of the inner sleeve 36 is provided with the self-locking universal wheel 38, the self-locking universal wheel 38 is convenient to move, and is limited to be locked at any time, the use is convenient, and the two outer sleeves 35 are connected with the threaded sleeves 39 which are symmetrically distributed.

Further, in order to realize being convenient for adjust, the inner wall of two screw thread sleeves 39 cup joints with the both ends surface screw thread of two-way lead screw 3 respectively, the fixed surface of two-way lead screw 3 cup joints driving-disc 310, driving-disc 310 plays the effect of being convenient for drive two-way lead screw 3 pivoted, the rotation of two-way lead screw 3 plays the effect that drives two screw thread sleeves 39 and move back to back mutually, the one end of corrugated hose 4 and the fixed intercommunication of the interior diapire of hopper 1, the other end fixedly connected with swing hard tube 41 of corrugated hose 4.

Through setting up adjustment mechanism, play the fat groove width of being convenient for according to actual construction and adjust, be applicable to and backfill the use to the fat groove of different width, application scope is wider, and the practicality is high, and plays the installation of being convenient for to extension pipe 43 through the lifting to hopper 1, and convenient operation not only improves work efficiency, and directly carries the soil block to fat tank bottom through extension pipe 43, to the waterproof effect of protecting of going on of outer wall.

Further, in order to realize the swing regulation, the outer fixed surface of swing hard tube 41 is connected with hangers 42 that are the symmetric distribution, flange fixed mounting is passed through to the one end of swing hard tube 41 has extension pipe 43, extension pipe 43 can adopt the length that the multisection is unequal, pass through flange joint according to the user demand, the lower fixed surface fixedly connected with of hopper 1 is the fixed block 44 of symmetric distribution, the mounting hole has been seted up in the front of fixed block 44, swinging arms 45 are installed through the bearing to the inner wall of mounting hole, fixed block 44 uses through bearing and swinging arms 45, play the effect that the cooperation swing hard tube 41 carried out the swing regulation.

Further, in order to realize that automatic rolling is put and is stretched, the one end of swinging arms 45 and the fixed surface of swing hard tube 41 are connected, the fixed surface of both sides of hopper 1 is connected with the mounting bracket 46 that is the symmetric distribution, the bull stick 47 is installed through the bearing to the inner wall of mounting bracket 46, the one end of bull stick 47 runs through and extends to the front of mounting bracket 46, the fixed surface of bull stick 47 has cup jointed rolling frame 48, the rotation of bull stick 47 plays to drive rolling frame 48 and carries out the pivoted effect.

Further, in order to realize winding protection, a steel wire rope 49 is connected to the inner wall of the winding frame 48 in a winding mode, the winding frame 48 is driven to wind and stretch by rotation, a movable ring 410 is fixedly connected to one end of the steel wire rope 49, the inner wall of the movable ring 410 is movably sleeved with the inner wall of the hanging lug 42, the movable ring 410 is movably matched with the hanging lug 42 and plays a protection role in winding the steel wire rope 49, a turbine 411 is fixedly sleeved on the outer surface of one rotating rod 47, and a chain wheel 412 is fixedly sleeved on the outer surface of the rotating rod 47.

Further, in order to realize turbine transmission, a chain belt 413 is sleeved on the outer surface of the chain wheel 412 in a transmission manner, the chain wheel 412 and the chain belt 413 are matched to achieve synchronous motion, a mounting plate 414 is fixedly connected to the upper surface of one mounting frame 46, a servo motor 415 is fixedly mounted on the upper surface of the mounting plate 414, a worm 416 is fixedly mounted on an output shaft of the servo motor 415 through a coupler, the outer surface of the worm 416 is meshed with the tooth surface of the turbine 411, and the servo motor 415 plays a role in driving the turbine 411 to rotate through the worm 416.

Through setting up the defeated material mechanism of swing, play automation and drive extension pipe 43 through swing hard tube 41 and swing, carry the soil block of backfilling to different positions in the fertilizer trough, make its soil block backfill even to avoided equipment need frequently remove, not only reduced the hand labor power, and improved the effect of backfilling efficiency.

Example two

Referring to fig. 1-8, a backfilling device for municipal wet soft narrow fertilizer groove foundation pits and a backfilling method thereof, comprising the following steps of firstly, observing the width of a fertilizer groove to be backfilled, simultaneously clockwise rotating two driving discs 310, driving the bidirectional screw rod 3 to rotate by the driving discs 310, driving two outer sleeves 35 to move backwards by the cooperation of threaded sleeves 39, stably driving the inner sleeve 36 and the self-locking universal wheel 38 to move by the cooperation of a guide sleeve 34 and a guide block 32 by the outer sleeves 35, and stopping rotating after moving to a proper width;

moving the hopper 1 to a position of a fertilizer groove to be backfilled through the matching of the self-locking universal wheel 38, locking and limiting the self-locking universal wheel 38, starting the hydraulic cylinder 37 to perform stretching movement, driving the hopper 1 to ascend through the matching of the outer sleeve 35, stopping the movement after the hopper 1 ascends to a certain height, connecting the multiple sections of extension pipes 43 through flanges according to the depth of the fertilizer groove, and starting the hydraulic cylinder 37 to perform contraction movement after the connection is completed, so that the hopper 1 drives the extension pipes 43 to stretch into the fertilizer groove;

feeding the crushed soil blocks through an external small screw feeder, conveying the soil blocks into a hopper 1, enabling the soil blocks to fall above an inclined steel wire screen 2 after entering the hopper 1, screening the soil blocks with proper sizes through the steel wire screen 2, screening out large soil blocks, rolling the large soil blocks through the inclined steel wire screen 2, extruding a buffer blade 24, enabling the buffer blade 24 to rotate in cooperation with a positioning rod 23, and enabling the appropriate soil blocks to be fully screened after the buffering speed limitation of an arc-shaped buffer block 22;

step four, finally, the larger soil blocks drop into the arc-shaped material guiding block 21 through the material discharging opening, the larger soil blocks are conveyed into a container prepared in advance through the inclined arc-shaped material guiding block 21, the larger soil blocks are convenient to crush and use again subsequently, the soil blocks with proper sizes enter the bottom of the hopper 1 through the steel wire screen 2 and are conveyed to the swinging hard pipe 41 through the corrugated hose 4, and finally the soil blocks are conveyed to the bottom of the fertilizer tank through the extension pipe 43 for backfilling;

step five, in order to avoid accumulation at one position during soil block backfilling, the hopper 1 and the soil block conveying device need to be frequently moved, the worm 416 is driven to rotate clockwise by starting the servo motor 415, the worm 416 drives one rotating rod 47 to rotate in a matched mode through the meshed worm wheel 411, one rotating rod 47 rotates through the chain wheel 412 and the chain belt 413 in a matched mode to drive the two winding frames 48 to rotate synchronously, the steel wire rope 49 on one winding frame 48 is wound and tensioned, the steel wire rope 49 on the other winding frame 48 is unwound, the swinging hard tube 41 is driven to swing through the matching of the movable ring 410 and the hanging lug 42, the swinging hard tube 41 drives the extension tube 43 to swing through the matching bending of the corrugated hose 4, and therefore soil blocks are conveyed to different positions in the fertilizer tank, otherwise, the worm 416 rotates anticlockwise, and the extension tube 43 is driven to swing towards the other direction in a similar mode.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (10)

1. The utility model provides a municipal administration is soft narrow fertile groove backfill device for foundation ditch, includes hopper (1), its characterized in that: a filtering and screening mechanism is arranged in the hopper (1), the filtering and screening mechanism comprises a steel wire screen (2), soil blocks with proper sizes are filtered through the filtering and screening mechanism, and larger soil blocks are screened to be rolled and recycled;

adjusting mechanisms are arranged on the surfaces of two sides of the hopper (1), each adjusting mechanism comprises a bidirectional screw rod (3), the adjusting mechanisms are positioned on two sides of the filtering and screening mechanism, and relative movement adjustment is realized according to the width of a foundation pit of the construction fertilizer groove through the adjusting mechanisms;

the lower surface of hopper (1) is provided with the defeated material mechanism of swing, the defeated material mechanism of swing includes corrugated hose (4), the defeated material mechanism of swing is located filter screening mechanism below, through the defeated material mechanism of swing realizes carrying out the swing adjustment to the falling point of backfilling soil block in the fat groove foundation ditch.

2. The backfill device for the municipal wet soft narrow fertilizer groove foundation pit according to claim 1, characterized in that: the utility model discloses a steel wire screen cloth, including hopper (1), steel wire screen cloth (2) the surface with the inner wall of hopper (1) is fixed to be cup jointed, the bin outlet has been seted up on a side surface of hopper (1), a side fixed surface of hopper (1) is connected with arc guide block (21), the last fixed surface of steel wire screen cloth (2) is connected with arc buffer block (22), the both ends of arc buffer block (22) respectively with the both sides inner wall fixed connection of hopper (1), the both sides inner wall of hopper (1) passes through bearing installation locating lever (23).

3. The backfill device for the municipal wet soft narrow fertilizer groove foundation pit according to claim 2, characterized in that: the surface fixed connection of locating lever (23) is buffer blade (24) that the symmetric distribution is, adjustment mechanism still includes supporting shoe (31), two the inclined plane of supporting shoe (31) respectively with the both sides inclined plane fixed connection of hopper (1), the both ends fixedly connected with of supporting shoe (31) is guide block (32) of symmetric distribution, the one end fixedly connected with stopper (33) of guide block (32), uide bushing (34) has been cup jointed in the surface activity of guide block (32).

4. The backfill device for the municipal wet soft and narrow fertilizer groove foundation pit according to claim 3, characterized in that: the lower fixed surface of uide bushing (34) is connected with outer sleeve (35), inner sleeve (36) have been cup jointed in the inner wall activity of outer sleeve (35), the interior diapire fixed mounting of inner sleeve (36) has pneumatic cylinder (37), the one end of pneumatic cylinder (37) piston rod with the interior roof fixed connection of outer sleeve (35), the lower fixed surface of inner sleeve (36) installs auto-lock universal wheel (38), two the relative fixed surface of outer sleeve (35) is connected with threaded sleeve (39) that are the symmetric distribution.

5. The backfill device for the municipal wet soft and narrow fertilizer groove foundation pit according to claim 4, characterized in that: two the inner wall of threaded sleeve (39) respectively with the both ends surface screw of two-way lead screw (3) cup joints, the external fixed surface of two-way lead screw (3) has cup jointed driving-disc (310), the one end of corrugated hose (4) with the interior diapire fixed intercommunication of hopper (1), the other end fixedly connected with swing hard tube (41) of corrugated hose (4).

6. The backfill device for the municipal wet soft and narrow fertilizer groove foundation pit according to claim 5, characterized in that: the outer fixed surface of swing hard tube (41) is connected with hangers (42) that are the symmetric distribution, the one end of swing hard tube (41) has extension pipe (43) through flange fixed mounting, the lower fixed surface of hopper (1) is fixed block (44) that the symmetric distribution, the mounting hole has been seted up in the front of fixed block (44), swinging arms (45) are installed through the bearing to the inner wall of mounting hole.

7. The backfill device for the municipal wet soft and narrow fertilizer groove foundation pit according to claim 6, characterized in that: the one end of swinging arms (45) with the external fixed surface of swing hard tube (41) is connected, the both sides fixed surface of hopper (1) is connected with mounting bracket (46) that are the symmetric distribution, bull stick (47) are installed through the bearing to the inner wall of mounting bracket (46), the one end of bull stick (47) is run through and is extended to the front of mounting bracket (46), the external fixed surface of bull stick (47) has cup jointed wind-up stand (48).

8. The backfill device for the municipal wet soft and narrow fertilizer groove foundation pit according to claim 7, characterized in that: the inner wall winding of rolling frame (48) is connected with wire rope (49), the one end fixedly connected with activity ring (410) of wire rope (49), the inner wall of activity ring (410) with the inner wall activity of hangers (42) is cup jointed, and one of them the external fixed surface of bull stick (47) is cup jointed turbine (411), the external fixed surface of bull stick (47) is cup jointed sprocket (412).

9. The backfill device for the municipal wet soft and narrow fertilizer groove foundation pit according to claim 8, characterized in that: chain belt (413) has been cup jointed in the surface transmission of sprocket (412), one of them the last fixed surface of mounting bracket (46) is connected with mounting panel (414), last fixed surface of mounting panel (414) installs servo motor (415), the output shaft of servo motor (415) passes through shaft coupling fixed mounting worm (416), the surface of worm (416) with the flank of tooth meshing of turbine (411).

10. The backfill method of the backfill device for the municipal wet soft narrow fertilizer groove foundation pit according to any one of claims 1-9, comprising the following steps: observing the width of a fertilizer groove to be refilled, simultaneously rotating two driving discs (310) clockwise, driving the bidirectional screw rod (3) to rotate by the driving discs (310), driving two outer sleeves (35) to move backwards through the matching of threaded sleeves (39), stably driving an inner sleeve fertilizer groove barrel (36) and a self-locking universal wheel (38) to move by the outer sleeves (35) through the matching of a guide sleeve (34) and a guide block (32), and stopping rotating after moving to a proper width;

moving the hopper (1) to a position of a fertilizer groove to be backfilled through the matching of the self-locking universal wheel (38), locking and limiting the self-locking universal wheel (38), starting the hydraulic cylinder (37) to perform stretching movement, driving the hopper (1) to ascend through the matching of the outer sleeve (35), stopping the movement after the hopper ascends to a certain height, connecting the multiple sections of extension pipes (43) through flanges according to the depth of the fertilizer groove, starting the hydraulic cylinder (37) to perform contraction movement after the connection is completed, and driving the extension pipes (43) to extend into the fertilizer groove by the hopper (1);

feeding the crushed soil blocks through an external small screw feeder, conveying the soil blocks into a hopper (1), enabling the soil blocks to fall above an inclined steel wire screen (2) after entering the hopper (1), screening the soil blocks with proper sizes through the steel wire screen (2), screening out large soil blocks, rolling the large soil blocks through the inclined steel wire screen (2), extruding a buffer blade (24), enabling the buffer blade (24) to rotate in cooperation with a positioning rod (23), and enabling the proper soil blocks to be fully screened after the speed is limited through the buffering of an arc-shaped buffer block (22);

step four, finally, the larger soil blocks fall into the arc-shaped material guiding blocks (21) through the discharge port, the larger soil blocks are conveyed into a container prepared in advance through the inclined arc-shaped material guiding blocks (21) to be convenient for subsequent crushing and using again, the soil blocks with proper sizes enter the bottom of the hopper (1) through the steel wire screen (2) and are conveyed to the swinging hard pipe (41) through the corrugated hose (4), and finally the soil blocks are conveyed to the bottom of the fertilizer tank through the extension pipe (43) to be backfilled;

and step five, in order to avoid accumulation at one position during soil block backfilling, a hopper (1) and a soil block conveying device need to be frequently moved, a servo motor (415) is started to drive a worm (416) to rotate clockwise, the worm (416) drives one rotating rod (47) to rotate in a matched mode through a meshed turbine (411), the rotation of one rotating rod (47) drives two winding frames (48) to rotate synchronously through the matching of a chain wheel (412) and a chain belt (413), a steel wire rope (49) on one winding frame (48) is wound and tensioned, a steel wire rope (49) on the other winding frame (48) is stretched, so that a swinging hard pipe (41) is driven to swing through the matching of a movable ring (410) and a hanging lug (42), the swinging hard pipe (41) drives an extension pipe (43) to swing through the matching bending of a corrugated hose (4), and accordingly soil blocks are conveyed to different positions in a fertilizer groove, otherwise, the worm (416) rotates anticlockwise, and the extension pipe (43) is driven to swing towards the other direction.

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