CN115748745A - Highway subgrade backfilling device and backfilling method - Google Patents

Abstract

The invention relates to the technical field of highway subgrade backfilling, in particular to a highway subgrade backfilling device and a backfilling method, wherein the backfilling device comprises a transport trolley, a feeding assembly, a lateral adjusting assembly and a shunting blanking assembly, and has the beneficial effects that: through the adaptation connection who sets up travelling bogie and side direction pipeline, thereby realize the purpose of automatic blanking, the efficiency of backfilling has been improved greatly, utilize simultaneously to treat that the workbin realizes breaing up of backfill material, realize the purpose of packing closely real and preventing the jam, realize the regulation of horizontal position through setting up the regulating box, adaptation dolly and backfill the distance between the hole are adjusted, through setting up the cooperation of branch workbin and material strip, make the width adaptation of the ejection of compact in the width of backfill hole, thereby improve backfill efficiency, realize automatic transportation operation.

Description

Highway subgrade backfilling device and backfilling method

Technical Field

The invention relates to the technical field of highway subgrade backfilling, in particular to a highway subgrade backfilling device and a highway subgrade backfilling method.

Background

In the construction process of the highway, a half-side construction method is mostly adopted to ensure the traffic, and during construction, the side plates are utilized to protect the side walls of the roadbed, so that the side surfaces of the highway are determined to be regular.

However, after the roadbed side plate is removed, a concave long groove is formed between the highway and the road tooth, and the highway is usually repaired by adopting a backfilling mode in the prior art.

However, because the width of the roadbed side grooves is small and the roadbed side grooves are different in size, automatic mechanical backfilling is difficult to achieve, only manual construction can be used, and the highway is constructed and long in length, so that the workload of manual construction is large, a backfilling and conveying device and manual conveying are required to be carried out synchronously, and the safe passing of the highway is seriously influenced.

Disclosure of Invention

The invention aims to provide a highway subgrade backfilling device and a highway subgrade backfilling method, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a highway subgrade backfill apparatus, comprising:

the transport trolley is positioned on the inner side of the roadbed, and backfill materials are filled in the transport trolley;

the feeding assembly comprises a material waiting box, a feeding hopper and a connecting pipe, the feeding assembly is fixed on one side of the transport trolley close to the roadbed backfill pit, the upper end of the feeding hopper is over against a carriage of the transport trolley, the lower end of the feeding hopper is communicated with the material waiting box, a screening ball for scattering backfill materials is rotatably mounted in the material waiting box, and the lower end of the material waiting box is vertically communicated with the connecting pipe;

the lateral adjusting assembly comprises an adjusting box, a folding hose and an inclined pipe, the upper end of the folding hose is fixed on the adjusting box, the upper end of the folding hose is communicated with the lower end of the connecting pipe, the lower end of the folding hose is transversely installed in an inner cavity of the readjusting box in a sliding mode, and the lower end of the folding hose is vertically communicated with the inclined pipe;

reposition of redundant personnel blanking subassembly, reposition of redundant personnel blanking subassembly is including dividing workbin, shunt tubes and ejection of compact strip, divide the workbin to be located the road bed backfill hole directly over, divide the lower extreme of the upper end intercommunication slope pipe of workbin, be provided with linear distribution's multiunit baffle in dividing the workbin, be provided with the slope overflow mouth that communicates each other on the baffle, divide the lower extreme of workbin to pass through linear distribution's multicomponent flow tube intercommunication ejection of compact strip, the bilateral symmetry transversely pegs graft on the ejection of compact strip has a pair of regulation horizontal bar, the upper end shutoff of adjusting the horizontal bar is on the lower extreme port of shunt tubes.

Preferably, the lower extreme of travelling bogie is provided with a pair of gyro wheel of being convenient for to remove, and the gyro wheel passes through the electric actuator drive, and horizontal fixed welding has a supporting seat on the lateral wall of travelling bogie, even the pipe is vertical to be run through and to be pegged graft on the supporting seat, is provided with the spacing ear seat of pressfitting on the supporting seat on the outer wall of even pipe, treats that workbin and regulating box all fix on the outer wall of travelling bogie.

Preferably, treat to be provided with in the inner chamber of workbin and rotate the inner chamber, the screening ball is through installing the motor drive who treats on the workbin, and the screening ball comprises bilateral symmetry's a pair of hollow hemisphere screen cloth, and vertical centre gripping has the double-deck board between the adjacent hollow hemisphere, and horizontal fixed mounting has the sieve between the adjacent hollow hemisphere, treats that the upper end of workbin is provided with intercommunication feed hopper's last intercommunication groove, the double-deck board becomes the ring form, and the upper end in clearance is just to last intercommunication groove between the double-deck board.

Preferably, the lower end of the rotating inner cavity is provided with a pair of bilaterally symmetrical inclined flow channels communicated with the port at the upper end of the connecting pipe, a rotating seat is fixedly installed between every two adjacent inclined flow channels, the lower end of the double-layer plate is rotatably clamped on the rotating seat, a plurality of groups of connecting rods distributed in a circumferential array mode are arranged between the double-layer plate, and gaps between every two adjacent connecting rods are larger than grid gaps of the hollow hemispherical screen.

Preferably, the sieve plate is transversely installed between the adjacent hollow hemispheres, a criss-cross inner frame is arranged in the sieve plate, a screen is filled in a gap in the inner frame, and a plurality of groups of sharp cones which are linearly distributed are arranged on the outer walls of the upper end and the lower end of the inner frame.

Preferably, the inner chamber of regulating box sets up to adjusting the inner chamber, is provided with a pair of horizontal extension's that ascends to the height spout on the lateral wall around adjusting the inner chamber, and the lower extreme of folding hose is provided with even dish, the upper end of slope pipe is provided with even dish down, it all is provided with ring ear seat, a pair of that distributes from top to bottom to go up the lower extreme of even dish and the upper end of linking the dish down between the ring ear seat through bilateral symmetry's a pair of fixing bolt connection, outer wall centre gripping slidable mounting is in the spout around the ring ear seat.

Preferably, the two sides of the ring ear seat are respectively clamped with a first clamping block and a second clamping block, a clamping groove is formed in the first clamping block and the second clamping block, the clamping groove is fixed on the ring ear seat through a fixing bolt in a clamping mode, a fixing rod is transversely arranged on the outer side of the first clamping block, a screw rod is transversely arranged on the outer side of the second clamping block, a through hole corresponding to the fixing rod and a screw hole corresponding to the screw rod are respectively formed in the two sides of the adjusting box, the fixing rod is fixed on the side wall of the adjusting box through a locking nut, a spring is transversely sleeved on the fixing rod and is pressed between the first clamping block and the inner wall of the adjusting cavity, and the end portion of the screw rod is rotatably installed on the second clamping block through a bearing.

Preferably, the material distribution box is divided into a plurality of groups of separated spaces by partition plates, and the inner diameters of inclined overflow ports on the plurality of groups of partition plates which are distributed linearly are gradually increased from the middle to two sides.

Preferably, the both sides of unloading strip are run through and are provided with flexible slot, and the front end of unloading strip runs through to be provided with and runs through rectangular groove, and the inner chamber upper end inner wall of unloading strip is provided with the seal groove, and bilateral symmetry is a pair of adjust the horizontal strip and transversely peg graft in flexible slot, the upper end of adjusting the horizontal strip be provided with the seal strip of seal groove sliding fit, the tip outer wall of adjusting the horizontal strip is provided with perpendicularly along the fixed column that runs through the outside extension of rectangular groove, the fixed column passes through the nut to be fixed on the outer wall of unloading strip.

A backfilling method realized according to the highway subgrade backfilling device comprises the following steps:

the transverse adjustment is carried out, the lower end position of the folding hose is adjusted through the rotation and extrusion of the lateral threads of the screw rod, and then the inclined pipe is pulled to realize the transverse adjustment, so that the obtained material strips and the material distribution box are positioned right above the roadbed backfill pit;

width adaptation, namely adjusting the position of the transverse strip through lateral sliding to enable the discharging width of the obtained material strip to be adapted to the inner diameter width of the backfill pit;

feeding, wherein backfill materials such as soil, gravel and the like on the transport trolley are transported into a feeding hopper through manual or mechanical transmission, the backfill materials are fully scattered through a rotating screening ball, and the scattered backfill materials fall into a material distribution box along a connecting pipe, a folding hose and an inclined pipe;

the reposition of redundant personnel ejection of compact guarantees through the partition of baffle that the middle inner chamber of branch workbin fills up earlier, realizes overflowing to both sides through the slope overflow mouth, and the rethread goes out the material strip and fills backfill hole.

Compared with the prior art, the invention has the beneficial effects that:

the invention realizes the purpose of automatic blanking by arranging the transport trolley and the lateral pipeline in an adaptive connection manner, greatly improves the backfilling efficiency, simultaneously realizes the scattering of backfill materials by utilizing a material waiting box, realizes the purposes of compact filling and blockage prevention, realizes the adjustment of the transverse position by arranging the adjusting box, adjusts the distance between the adaptive trolley and a backfilling pit, and ensures that the width of discharged materials is adaptive to the width of the backfilling pit by arranging the matching of the material distributing box and the material discharging strips, thereby improving the backfilling efficiency and realizing automatic transportation operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a schematic perspective view of the folding hose connection of the present invention;

FIG. 4 is an enlarged view of the structure at C in FIG. 2;

FIG. 5 is a schematic view of the structure of a material waiting box of the invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 1;

FIG. 7 is a schematic perspective view of a screening ball according to the present invention;

FIG. 8 is a schematic view of a half-section perspective view of a sieving ball of the present invention;

FIG. 9 is a schematic perspective view of the distribution box of the present invention;

FIG. 10 is a perspective view of a first clamping block according to the present invention;

fig. 11 is a schematic perspective view of an adjusting crossbar according to the present invention.

In the figure: 1. transporting the trolley; 2. a roller; 3. a material waiting box; 4. a feed hopper; 5. screening the balls; 6. connecting pipes; 7. an adjusting box; 8. adjusting the inner cavity; 9. an inclined tube; 10. a material distributing box; 11. discharging the material strips; 12. an upper connecting disc; 13. folding the hose; 14. a lower connecting disc; 15. a fixing rod; 16. a first clamping block; 17. a second clamping block; 18. a screw; 19. fixing the bolt; 20. a circular ring ear seat; 21. a screw hole; 22. a spring; 23. a bearing; 24. locking the nut; 25. a through hole; 26. a chute; 27. rotating the inner cavity; 28. a rotating seat; 29. a motor; 30. a double-layer plate; 31. a connecting rod; 32. a sieve plate; 33. an inner frame; 34. a pointed cone; 35. an upper communicating groove; 36. a limiting ear seat; 37. a supporting seat; 38. a partition plate; 39. an inclined overflow port; 40. a card slot; 41. a shunt tube; 42. adjusting the cross bars; 43. a sealing strip; 44. a sealing groove; 45. fixing the column; 46. the long groove is penetrated; 47. a telescopic slot.

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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 11, the present invention provides a technical solution:

example 1:

a highway subgrade backfilling device comprises a transport trolley 1, a feeding assembly, a lateral adjusting assembly and a shunting blanking assembly.

The transport trolley 1 is positioned on the inner side of the roadbed, and backfill materials are filled in the transport trolley 1.

Convenient transportation of backfill materials is realized through the transportation trolley 1.

The feeding assembly comprises a feeding box 3, a feeding funnel 4 and a connecting pipe 6, the feeding assembly is fixed on one side, close to the roadbed backfill pit, of the transport trolley 1, the upper end of the feeding funnel 4 is opposite to a carriage of the transport trolley 1, the lower end of the feeding funnel 4 is communicated with the feeding box 3, a screening ball 5 used for scattering backfill materials is rotatably mounted in the feeding box 3, and the lower end of the feeding box 3 is vertically communicated with the connecting pipe 6.

Through setting up the screening ball 5 of rotation installation to carry out abundant scattering, screening with backfill material, prevent pipe blockage, avoid cubic packing simultaneously, improved the compactedness of filling.

The lateral adjusting assembly comprises an adjusting box 7, a folding hose 13 and an inclined pipe 9, the upper end of the folding hose 13 is fixed on the adjusting box 7, the upper end of the folding hose 13 is communicated with the lower end of the connecting pipe 6, the lower end of the folding hose 13 is transversely installed in an inner cavity of the re-adjusting box 7 in a sliding mode, and the lower end of the folding hose 13 is vertically communicated with the inclined pipe 9.

The transverse position of the inclined pipe 9 is adjusted by arranging the folding hose 13 which slides transversely, and the inclined pipe 9 is utilized to pull the material distribution box 10 and the discharging strip 11 to slide transversely, so that the discharging position is matched with the backfilling pit, and the transverse distance between the transport trolley 1 and the backfilling pit is convenient to adjust.

The shunting blanking assembly comprises a shunting box 10, shunting pipes 41 and discharging strips 11, wherein the shunting box 10 is positioned right above a roadbed backfill pit, the upper end of the shunting box 10 is communicated with the lower end of an inclined pipe 9, a plurality of groups of partition plates 38 which are linearly distributed are arranged in the shunting box 10, inclined overflow ports 39 which are mutually communicated are arranged on the partition plates 38, the lower end of the shunting box 10 is communicated with the discharging strips 11 through the multi-group flow pipes 41 which are linearly distributed, a pair of adjusting cross strips 42 are transversely inserted and connected on the discharging strips 11 in a bilateral symmetry mode, and the upper ends of the adjusting cross strips 42 are plugged on the lower end ports of the shunting pipes 41.

The separation of the partition plate 38 ensures that the middle inner cavity of the material distribution box 10 is filled first, the overflow to the two sides is realized through the inclined overflow port 39, and then the backfill pit is filled through the material outlet strip 11.

Example 2:

on embodiment 1's basis, the lower extreme of travelling bogie 1 is provided with a pair of gyro wheel 2 of being convenient for to remove, and gyro wheel 2 passes through the electric actuator drive, and horizontal fixed welding has supporting seat 37 on the lateral wall of travelling bogie 1, and even pipe 6 is vertical to be run through and peg graft on supporting seat 37, is provided with spacing ear seat 36 of pressfitting on supporting seat 37 on even the outer wall of pipe 6, treats that workbin 3 and regulating box 7 all fix on the outer wall of travelling bogie 1.

Through setting up the gyro wheel 2 and being convenient for transport, set up spacing ear seat 36 and supporting seat 37's cooperation, realize the installation stability of connecting pipe 6.

Example 3:

on embodiment 1's basis, treat to be provided with in the inner chamber of workbin 3 and rotate inner chamber 27, screening ball 5 is through installing the motor 29 drive on treating workbin 3, screening ball 5 comprises a pair of hollow hemisphere screen cloth of bilateral symmetry, vertical centre gripping has double-deck board 30 between the adjacent hollow hemisphere, horizontal fixed mounting has sieve 32 between the adjacent hollow hemisphere, treat that the upper end of workbin 3 is provided with the last intercommunication groove 35 that feeds through feed hopper 4, double-deck board 30 becomes the ring form, the upper end in clearance is just to last intercommunication groove 35 between double-deck board 30.

The purpose of accurate feeding is realized by arranging the double-layer plate 30, and the backfill raw materials falling from the feeding are impacted, scattered and screened by the sieve plate 32.

Example 4:

on the basis of embodiment 3, the lower end of the rotating inner cavity 27 is provided with a pair of bilaterally symmetrical inclined flow channels communicated with the upper end port of the connecting pipe 6, a rotating seat 28 is fixedly installed between adjacent inclined flow channels, the lower end of the double-layer plate 30 is rotatably clamped on the rotating seat 28, a plurality of groups of connecting rods 31 distributed in a circumferential array are arranged between the double-layer plates 30, and the gap between the adjacent connecting rods 31 is larger than the grid gap of the hollow hemispherical screen.

The backfill raw materials are primarily buffered and scattered by arranging the connecting rod 31, and the rotating seat 28 is utilized to keep the circumferential rotating angle of the screening ball 5 and the double-layer plate 30, so that deviation is avoided.

Example 5:

on the basis of embodiment 4, the sieve plate 32 is transversely installed between adjacent hollow hemispheres, a criss-cross inner frame 33 is arranged in the sieve plate 32, a gap in the inner frame 33 is filled with a sieve mesh, and a plurality of groups of linearly distributed pointed cones 34 are arranged on the outer walls of the upper end and the lower end of the inner frame 33.

The impact on the backfill material is enhanced by arranging the pointed cone 34, the scattering efficiency is improved, the structural strength of the sieve plate 32 is improved by utilizing the inner frame 33, and the deformation caused by the impact of the backfill material is avoided.

Example 6:

on the basis of embodiment 1, the inner cavity of the adjusting box 7 is set as an adjusting inner cavity 8, a pair of elevated transversely extending sliding grooves 26 are arranged on the front and rear side walls of the adjusting inner cavity 8, an upper connecting disc 12 is arranged at the lower end of the folding hose 13, a lower connecting disc 14 is arranged at the upper end of the inclined pipe 9, circular ring ear seats 20 are arranged at the lower end of the upper connecting disc 12 and the upper end of the lower connecting disc 14, a pair of circular ring ear seats 20 which are distributed up and down are connected through a pair of bilaterally symmetrical fixing bolts 19, and the front and rear outer walls of the circular ring ear seats 20 are clamped and slidably installed in the sliding grooves 26.

The transverse limiting sliding adjustment is realized by the matching of the circular ring ear seat 20 and the sliding groove 26.

Example 7:

on the basis of embodiment 6, a first clamping block 16 and a second clamping block 17 are respectively clamped on two sides of each of a pair of adjacent circular ring ear seats 20, clamping grooves 40 are formed in the first clamping block 16 and the second clamping block 17, the clamping grooves 40 are clamped and fixed on the circular ring ear seats 20 through fixing bolts 19, fixing rods 15 are transversely arranged on the outer sides of the first clamping blocks 16, screw rods 18 are transversely arranged on the outer sides of the second clamping blocks 17, through holes 25 corresponding to the fixing rods 15 and screw holes 21 corresponding to the screw rods 18 are respectively formed in two sides of the adjusting box 7, the fixing rods 15 are fixed on the side wall of the adjusting box 7 through locking nuts 24, springs 22 are transversely sleeved on the fixing rods 15, the springs 22 are pressed between the first clamping blocks 16 and the inner wall of the adjusting cavity 8, and the end portions of the screw rods 18 are rotatably mounted on the second clamping blocks 17 through bearings 23.

The upper end of the inclined pipe 9 is transversely adjusted by rotating and extruding the screw thread of the screw rod 18, the position is elastically fixed by the spring 22, the adjusted transverse position is further fixed by the fixing rod 15, deviation caused when the transport trolley 1 runs is avoided, and accuracy and stability of backfilling blanking are improved.

Example 8:

on the basis of the example 1, the method comprises the following steps of,

divide workbin 10 to separate for multiunit partitioned space through baffle 38, the internal diameter of slope overflow mouth 39 on the multiunit baffle 38 of linear distribution increases progressively to both sides along the centre, the both sides of ejection of compact strip 11 are run through and are provided with flexible slot 47, the front end of ejection of compact strip 11 runs through and is provided with and runs through rectangular groove 46, the inner chamber upper end inner wall of ejection of compact strip 11 is provided with seal groove 44, bilateral symmetry's a pair of regulation horizontal bar 42 is transversely pegged graft in flexible slot 47, the upper end of adjusting horizontal bar 42 is provided with the sealing strip 43 of sliding fit with seal groove 44, the tip outer wall of adjusting horizontal bar 42 is provided with perpendicularly along running through rectangular groove 46 outside extended fixed column 45, fixed column 45 passes through the nut to be fixed on the outer wall of ejection of compact strip 11.

Through the cooperation that sets up seal groove 44 and sealing strip 43, realize adjusting the leakproofness of horizontal bar 42 and shunt tubes 41 lower extreme port, utilize the lateral sliding who adjusts horizontal bar 42, realize adjusting the lateral width of the ejection of compact strip 11 ejection of compact for ejection of compact length and the internal diameter width looks adaptation of backfill pit.

A backfill method realized according to the highway subgrade backfill device comprises the following steps:

the transverse adjustment is carried out, the lower end position of the folding hose 13 is adjusted through the rotation and extrusion of the lateral threads of the screw 18, and then the inclined pipe 9 is pulled to realize the transverse adjustment, so that the discharge strip 11 and the distributing box 10 are positioned right above a roadbed backfill pit;

the width is adaptive, and the position of the transverse bar 42 is adjusted through lateral sliding, so that the discharging width of the discharging bar 11 is adaptive to the inner diameter width of the backfill pit;

feeding, wherein backfill materials such as soil and gravel on the transport trolley 1 are transported into a feeding hopper 4 through manual or mechanical transmission, the backfill materials are fully dispersed through a rotating screening ball 5, and the dispersed backfill materials fall into a material distribution box 10 along a connecting pipe 6, a folding hose 13 and an inclined pipe 9;

the material is divided and discharged, the middle inner cavity of the material dividing box 10 is ensured to be filled first through the separation of the partition plate 38, the overflow to the two sides is realized through the inclined overflow port 39, and then the backfill pit is filled through the material discharging strip 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a highway road bed backfill device which characterized in that: the backfill apparatus comprises:

the transport trolley (1), the transport trolley (1) is positioned on the inner side of the roadbed, and backfill materials are filled in the transport trolley (1);

the feeding assembly comprises a material box (3), a feeding hopper (4) and a connecting pipe (6), the feeding assembly is fixed on one side, close to a roadbed backfill pit, of the transport trolley (1), the upper end of the feeding hopper (4) is just opposite to a carriage of the transport trolley (1), the lower end of the feeding hopper (4) is communicated with the material box (3), a screening ball (5) for scattering backfill materials is rotatably mounted in the material box (3), and the lower end of the material box (3) is vertically communicated with the connecting pipe (6);

the lateral adjusting assembly comprises an adjusting box (7), a folding hose (13) and an inclined pipe (9), the upper end of the folding hose (13) is fixed on the adjusting box (7), the upper end of the folding hose (13) is communicated with the lower end of the connecting pipe (6), the lower end of the folding hose (13) is transversely installed in an inner cavity of the readjusting box (7) in a sliding mode, and the lower end of the folding hose (13) is vertically communicated with the inclined pipe (9);

reposition of redundant personnel blanking subassembly, reposition of redundant personnel blanking subassembly is including dividing workbin (10), shunt tubes (41) and ejection of compact strip (11), divide workbin (10) to be located the road bed backfill hole directly over, divide the lower extreme of the upper end intercommunication slope pipe (9) of workbin (10), divide and be provided with linearly distributed's multiunit baffle (38) in workbin (10), be provided with slope overflow mouth (39) of mutual intercommunication on baffle (38), divide the lower extreme of workbin (10) to pass through linearly distributed's multiunit shunt tubes (41) intercommunication ejection of compact strip (11), the bilateral symmetry transversely pegs graft on ejection of compact strip (11) has a pair of regulation horizontal bar (42), the upper end shutoff of adjusting horizontal bar (42) is on the lower extreme port of shunt tubes (41).

2. A highway subgrade backfill apparatus according to claim 1, characterized in that: the lower extreme of travelling bogie (1) is provided with a pair of gyro wheel (2) of being convenient for to remove, and gyro wheel (2) pass through the electric actuator drive, and horizontal fixed welding has supporting seat (37) on the lateral wall of travelling bogie (1), even pipe (6) are vertical to be run through and peg graft on supporting seat (37), are provided with spacing ear seat (36) of pressfitting on supporting seat (37) on the outer wall of even pipe (6), treat that workbin (3) and regulating box (7) all fix on the outer wall of travelling bogie (1).

3. A highway subgrade backfill apparatus according to claim 1, characterized in that: treat to be provided with in the inner chamber of workbin (3) and rotate inner chamber (27), screening ball (5) are through installing motor (29) drive on treating workbin (3), and screening ball (5) comprise a pair of hollow hemisphere screen cloth of bilateral symmetry, and vertical centre gripping has double-deck board (30) between the adjacent hollow hemisphere, and horizontal fixed mounting has sieve (32) between the adjacent hollow hemisphere, treats that the upper end of workbin (3) is provided with last intercommunication groove (35) of intercommunication feeding funnel (4), double-deck board (30) become the ring form, and the upper end in clearance is just to last intercommunication groove (35) between double-deck board (30).

4. A highway subgrade backfill apparatus according to claim 3, characterized in that: the lower extreme of rotating inner chamber (27) is provided with the slope runner of a pair of intercommunication connecting pipe (6) upper end port of bilateral symmetry, and fixed mounting has between the adjacent slope runner rotates seat (28), the lower extreme of double-deck board (30) rotates the centre gripping on rotating seat (28), is provided with multiunit connecting rod (31) that the circumference array distributes between double-deck board (30), the clearance between adjacent connecting rod (31) is greater than the net clearance of hollow hemisphere screen cloth.

5. A highway subgrade backfill device according to claim 4, characterized in that: the sieve plate (32) is transversely installed between adjacent hollow hemispheres, an inner frame (33) which is criss-cross is arranged in the sieve plate (32), a sieve mesh is filled in a gap in the inner frame (33), and a plurality of groups of sharp cones (34) which are linearly distributed are arranged on the outer walls of the upper end and the lower end of the inner frame (33).

6. A highway subgrade backfill apparatus according to claim 1, characterized in that: the inner chamber of regulating box (7) sets up to adjusting inner chamber (8), is provided with a pair of spout (26) of transversely extending of ascending a height on the front and back lateral wall of adjusting inner chamber (8), and the lower extreme of folding hose (13) is provided with even dish (12), the upper end of pipe (9) is provided with down even dish (14), it all is provided with ring ear seat (20) to go up the lower extreme of even dish (12) and the upper end of linking dish (14) down, and it is a pair of that distributes from top to bottom connect through bilateral symmetry's a pair of fixing bolt (19) between ring ear seat (20), and outer wall centre gripping slidable mounting is in spout (26) around ring ear seat (20).

7. A highway subgrade backfill device according to claim 6, characterized in that: the two sides of each adjacent pair of the circular ring ear seats (20) are respectively clamped with a first clamping block (16) and a second clamping block (17), clamping grooves (40) are formed in the first clamping block (16) and the second clamping block (17), the clamping grooves (40) are clamped and fixed on the circular ring ear seats (20) through fixing bolts (19), fixing rods (15) are transversely arranged on the outer sides of the first clamping blocks (16), screw rods (18) are transversely arranged on the outer sides of the second clamping blocks (17), through holes (25) corresponding to the fixing rods (15) and screw holes (21) corresponding to the screw rods (18) are respectively formed in the two sides of the adjusting box (7), the fixing rods (15) are fixed on the side wall of the adjusting box (7) through locking nuts (24), springs (22) are transversely sleeved on the fixing rods (15), the springs (22) are pressed between the first clamping blocks (16) and the inner wall of the adjusting inner cavity (8), and the end portions of the screw rods (18) are rotatably installed on the second clamping blocks (17) through bearings (23).

8. A highway subgrade backfill apparatus according to claim 1, characterized in that: the material distribution box (10) is divided into a plurality of groups of separated spaces by partition plates (38), and the inner diameters of inclined overflow ports (39) on the plurality of groups of partition plates (38) which are distributed linearly are gradually increased from the middle to two sides.

9. A highway subgrade backfill apparatus according to claim 8, characterized in that: the utility model discloses a material discharging device, including material discharging strip (11), regulation horizontal bar (42), telescopic slot (47), strip groove (46), sealing groove (44), bilateral symmetry, regulation horizontal bar (42) are transversely pegged graft in telescopic slot (47), and the upper end of regulation horizontal bar (42) is provided with sealing strip (43) with sealing groove (44) slip laminating, and the tip outer wall of regulation horizontal bar (42) is provided with perpendicularly along running through the outside fixed column (45) that extends in strip groove (46), fixed column (45) are fixed on the outer wall of material discharging strip (11) through the nut, the both sides of material discharging strip (11) are run through and are provided with telescopic slot (47), and the front end of material discharging strip (11) is run through and is provided with and runs through strip groove (46), and bilateral symmetry is a pair of horizontal bar.

10. A backfill method implemented by the highway subgrade backfill apparatus according to any one of claims 1-9, characterized by: the backfilling method comprises the following steps:

the transverse adjustment is carried out, the lower end position of the folding hose (13) is adjusted through the rotation extrusion of the lateral threads of the screw (18), and then the inclined pipe (9) is pulled to realize the transverse adjustment, so that the obtained material strips (11) and the material distribution box (10) are positioned right above the roadbed backfill pit;

the width is adaptive, and the position of the transverse strip (42) is adjusted through lateral sliding, so that the discharging width of the discharging strip (11) is adaptive to the inner diameter width of the backfill pit;

feeding, wherein backfill materials such as soil, gravel and the like on the transport trolley (1) are transported into a feeding hopper (4) through manual or mechanical transmission, the backfill materials are fully scattered through a rotating screening ball (5), and the scattered backfill materials fall into a material distribution box (10) along a connecting pipe (6), a folding hose (13) and an inclined pipe (9);

the material is divided and discharged, the middle inner cavity of the material dividing box (10) is ensured to be filled by the partition of the partition plate (38), the overflow to two sides is realized through the inclined overflow port (39), and then the backfill pit is filled through the material discharging strip (11).

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