CN116240771A

CN116240771A - Mud-lime-bonded broken stone paving device for road base construction and construction method

Info

Publication number: CN116240771A
Application number: CN202310282704.1A
Authority: CN
Inventors: 郭小刚; 吴小玲; 代明富; 陈木军; 郭洪; 梁宁; 刘晓琳
Original assignee: Sichuan Jincheng Zhixin Construction Engineering Co ltd
Current assignee: Sichuan Jincheng Zhixin Construction Engineering Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-06-09

Abstract

The utility model relates to a road construction technical field especially relates to a road base construction is with pug knot rubble spreading device and construction method, and road base construction is with pug knot rubble spreading device includes automobile body, storage hopper, ejection of compact subassembly and shakeout subassembly, the storage hopper sets up on the automobile body, the ejection of compact subassembly includes the box, the top and the storage hopper intercommunication of box, the discharge gate has been seted up to the bottom of box, be provided with the multilayer feed divider in the box, a plurality of discharge holes have been seted up on the feed divider, the length of feed divider increases gradually from the top towards the bottom of box, the material in the storage hopper falls to on the uppermost feed divider, be provided with the moving part that is used for driving feed divider reciprocating motion on the box, be provided with on the feed divider and be used for controlling the opening and close the piece of discharge gate degree, the shakeout subassembly is used for flattening the discharged material of discharge gate. The application has the effect of paving crushed stones of different sizes more uniformly and flatly.

Description

Mud-lime-bonded broken stone paving device for road base construction and construction method

Technical Field

The application relates to the technical field of road construction, in particular to a mud-lime-binding broken stone paving device for road base construction and a construction method.

Background

The mud and gravel road surface is a mixed structure formed by the interlocking of the gravel and the bonding effect of clay, wherein mud is filled after rolling and a certain amount of lime is infiltrated into the road surface. The construction method of the mud-bonded broken stone pavement comprises a grouting method and a mixing method, but the grouting method has better construction effect.

The grouting construction mainly comprises the steps of stone paving, preliminary rolling, grouting and secondary rolling, and when the stone is paved, the mud and dust are paved through a paving device. Paving stones, which are usually selected from a plurality of different sizes, is paved by paving stones with the largest size at the bottom, and paving stones with the same variety and size in the same layer by layer upwards according to the order of sequentially decreasing the sizes of the stones after the stones are paved.

When using the rubble of equidimension, current spreading device is difficult to adapt to the change of rubble size for the rubble unloading of laying is inhomogeneous, thereby leads to the stone on road bed surface to lay thickness inequality.

Disclosure of Invention

In order to lay the broken stone of different sizes more evenly and smoothly, the application provides a mud-lime-bonded broken stone paving device for road base construction and a construction method.

In a first aspect, the application provides a road base construction is with mud ash knot rubble spreading device, adopts following technical scheme:

the utility model provides a road base construction is with pug knot rubble spreading device, includes automobile body, storage hopper, ejection of compact subassembly and shakeouts the subassembly, the storage hopper sets up on the automobile body, ejection of compact subassembly includes the box, the top and the storage hopper intercommunication of box, the discharge gate has been seted up to the bottom of box, be provided with the multilayer feed divider in the box, a plurality of discharge holes have been seted up on the feed divider, the length of feed divider increases gradually from the top towards the bottom of box, the material in the storage hopper falls onto the uppermost feed divider, be provided with on the box and be used for driving the moving part of feed divider reciprocating motion, be provided with on the feed divider and be used for controlling the opening and close piece of discharge gate degree, it is used for flattening discharge gate outlying material to shakeout the subassembly.

By adopting the technical scheme, the opening and closing part is adjusted, the opening degree of the discharging hole is adjusted to the required opening degree, firstly, the crushed stone with the largest size is added into the storage hopper, the crushed stone discharged from the storage hopper falls onto the uppermost layer of the distributing plate, the moving part drives the distributing plate to move, so that the crushed stone falls into the next layer of the distributing plate from the discharging hole or two sides, sequentially passes through the multi-layer distributing plate and then falls to the ground, the crushed stone is distributed on the distributing plate for multiple times, and the crushed stone uniformly distributed on the distributing plate at the bottom falls, and is further flattened by the flattening component; after the broken stone with the same size is paved, the opening of the discharging hole is adjusted, and then broken stone with another size is put in for sequential repetition; therefore, the diameter of the discharge hole is adjusted according to different crushed stone sizes to divide materials, and the crushed stones with different sizes are paved uniformly and flatly.

Optionally, a plurality of spouts have been seted up in the box, divide flitch sliding connection respectively in the spout, divide the flitch to slide along the length direction of box, the moving part is including rotating the reciprocating screw who sets up on the box, reciprocating screw's axis of rotation is on a parallel with the length direction of box, the last thread bush of reciprocating screw is equipped with the connecting rod, and the multilayer divide the flitch all to connect on the connecting rod, be provided with on the box and be used for driving reciprocating screw pivoted motor.

Through adopting above-mentioned technical scheme, the motor drives reciprocating screw and rotates, and reciprocating screw drives the connecting rod and removes, and the connecting rod drives a plurality of feed plates and removes to in order to fall the material on the feed plate from the discharge opening.

Optionally, the both ends of the feed divider of box bottom all are provided with the extension board, extension board sliding connection is on the feed divider, the extension board slides along the length direction of feed divider, the discharge opening has also been seted up on the extension board, be provided with the regulating part that is used for adjusting the extension board position on the feed divider.

Through adopting above-mentioned technical scheme, remove the extension board, can adjust the length of the division flitch in stratum to the width of laying is adjusted according to the width of road to improve the suitability of device.

Optionally, the standing groove has all been seted up at the branch flitch both ends of bottom half, extension board sliding connection is in the standing groove, the regulating part includes adjusting screw, set up threaded hole on the extension board, adjusting screw threaded connection is at threaded hole, the standing groove runs through the side that the branch flitch is close to adjusting screw, the spread groove has been seted up on the box, standing groove and spread groove intercommunication, adjusting screw passes the spread groove and extends to outside the box, the cover is equipped with the fixed block on the adjusting screw, the side butt of fixed block and branch flitch.

Through adopting above-mentioned technical scheme, rotate adjusting screw, adjusting screw moves towards threaded hole, supports the fixed block with the side of dividing the flitch tightly to realized dividing the fixation between flitch and the extension board.

Optionally, the piece is opened and close including sliding two boards that open and close that set up in dividing the flitch, two it is located the both sides orientation of discharge opening respectively and is close to or keep away from the direction slip of discharge opening, divide and seted up the adjustment tank on the flitch, two it is equal sliding connection to open and close the board in the adjustment tank, divide the flitch to go up to slide and be provided with two stopper, the stopper is located the adjustment tank, two it all is located between two stoppers and stopper butt to open and close the board, divide the flitch internal rotation to be provided with two-way lead screw, two the stopper respectively with two-way lead screw's both ends threaded connection, two-way lead screw's one end extends to outside the box, be provided with on the board and be used for driving two and open and close the board towards the gliding elastic component of one side that keeps away from each other.

Through adopting above-mentioned technical scheme, rotate two-way lead screw, two-way lead screw drives two stopper towards the middle part slip to drive two and open and close the board and be close to each other, thereby reduce the degree of opening of discharge opening, when moving two stopper towards both sides, the elastic component drives two and opens and close the board and remove towards the both sides that keep away from each other, thereby increases the degree of opening of discharge opening, in order to adapt to the ejection of compact of size rubble, and the speed of control ejection of compact.

Optionally, the elastic element comprises a spring arranged between the two opening and closing plates, and two ends of the spring are respectively connected with the two opening and closing plates.

Through adopting above-mentioned technical scheme, the spring drives two and opens and close the board and slide towards the direction that keeps away from each other to in order to increase the aperture of discharge opening.

Optionally, the flattening component comprises a scraping plate arranged on the side edge of the box body, and a lifting piece for adjusting the height of the scraping plate is arranged on the box body.

Through adopting above-mentioned technical scheme, through the height of lifting part regulation scraper blade with the different thickness of laying of adaptation, after the rubble drops ground, the scraper blade is strickleed off the rubble, and the lay of further assurance rubble is leveled.

Optionally, the lifter is including setting up the regulation lead screw on the box, the axis of rotation of regulation lead screw is along vertical direction, is provided with the slider on the scraper blade, slider thread bush is established on adjusting the lead screw, the T-shaped groove has been seted up on the box, slider sliding connection is in the T-shaped inslot, slider and T-shaped groove adaptation.

Through adopting above-mentioned technical scheme, rotate the adjusting screw, adjust screw drive slider and slide in the T-shaped inslot to realized the regulation to scraper blade height, in order to adjust the thickness of laying of rubble.

Optionally, one side that the scraper blade is close to the box is provided with two guide boards, guide board is located between scraper blade and the box, two the one end of guide board is connected at the middle part of box, and the other end is connected at the both ends of scraper blade respectively.

Through adopting above-mentioned technical scheme, two guide plates contact the rubble earlier at the one end at box middle part, at the in-process that the automobile body removed, unnecessary rubble follows guide plate and removes to both sides to disperse the rubble, so as to pave the rubble.

In a second aspect, the present application provides a construction method for paving a road base layer by using a putty-bonded gravel, which adopts the following technical scheme:

the construction method of the road base construction used the pavement of the mud-lime-knot broken stone, use the pavement device of the road base construction used the mud-lime-knot broken stone, also include;

s1: the opening and closing piece is adjusted, the opening degree of the discharge hole is adjusted to the required opening degree, firstly, crushed stones with the largest size are added into the storage hopper, the vehicle body is started to move on the roadbed, and the crushed stones in the storage hopper are discharged;

s2: the broken stone discharged from the storage hopper falls onto the uppermost layer of the distributing plate, the moving part drives the distributing plate to move, so that the broken stone falls into the next layer of the distributing plate from the discharging hole or two sides, sequentially passes through the multi-layer distributing plate and then falls onto the ground, the broken stone is distributed on the distributing plate for multiple times, the broken stone uniformly distributed on the distributing plate at the bottom falls, and the broken stone is further flattened by the flattening component;

s3: after the broken stone of the same size is paved, stopping the machine to adjust the opening of the discharge hole, putting broken stone of another size into the machine, and repeating paving until the complete paving is completed.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the opening and closing parts are regulated to the opening degree of the discharge hole, firstly, crushed stones with the largest size are added into the storage hopper, the crushed stones discharged from the storage hopper fall onto the uppermost layer of distributing plates, the moving parts drive the distributing plates to move, so that the crushed stones fall into the next layer of distributing plates from the discharge hole or two sides, sequentially pass through the multi-layer distributing plates and then fall onto the ground, the crushed stones are distributed on the distributing plates for a plurality of times, the crushed stones are uniformly distributed on the distributing plates at the bottom, and the crushed stones are further flattened by the flattening assembly; after the broken stone with the same size is paved, the opening of the discharging hole is adjusted, and then broken stone with another size is put in for sequential repetition; thereby realizing the purpose of distributing the materials by adjusting the diameters of the discharging holes according to the sizes of the crushed stones, and being beneficial to evenly and flatly paving the crushed stones with different sizes;

2. the height of the scraper blade is adjusted through the lifting piece to adapt to different paving thicknesses, and after the broken stone falls to the ground, the scraper blade scrapes off the broken stone, so that paving of the broken stone is further ensured to be smooth.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present application.

Fig. 2 is a schematic sectional view of a structure of the case in the longitudinal direction according to the embodiment of the present application.

Fig. 3 is a schematic structural view of a case according to an embodiment of the present application.

Fig. 4 is a schematic sectional view of a structure in the width direction of the case according to the embodiment of the present application.

Fig. 5 is an enlarged schematic view of the structure of the portion a in fig. 4.

Fig. 6 is a schematic view of a connection structure of an extension board according to an embodiment of the present application.

Fig. 7 is a schematic view of the structure of the squeegee according to the embodiment of the application.

Reference numerals illustrate: 1. a vehicle body; 2. a storage hopper; 3. a case; 4. a discharge port; 5. a material dividing plate; 6. a discharge hole; 7. a chute; 8. a reciprocating screw; 9. a connecting rod; 10. a motor; 11. a lengthening plate; 12. a placement groove; 13. adjusting a screw; 14. a connecting groove; 15. a fixed block; 16. an opening and closing plate; 17. an adjustment tank; 18. a limiting block; 19. a bidirectional screw rod; 20. a spring; 21. a scraper; 22. adjusting a screw rod; 23. a slide block; 24. a T-shaped groove; 25. a guide plate; 26. a first pass through groove; 27. and a second pass through groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-7.

The embodiment of the application discloses a road base construction is with mud ash knot rubble spreading device. Referring to fig. 1 and 2, the road base construction is with pug knot rubble spreading device includes automobile body 1, storage hopper 2, ejection of compact subassembly and amortization subassembly, and storage hopper 2 welded fastening is on automobile body 1, and ejection of compact subassembly includes box 3, and the lower port of storage hopper 2 and the middle part welded fastening at box 3 top communicate, and the gate valve is installed to the bottom of storage hopper 2 to control the blowing of storage hopper 2. The length direction of the box body 3 is parallel to the width direction of the road, and a discharge hole 4 is formed in the bottom of the box body 3.

Referring to fig. 1 and 2, a plurality of layers of distributing plates 5 are slidably connected in the box body 3, the length direction of the distributing plates 5 is parallel to the length direction of the box body 3, the distributing plates 5 slide along the length direction of the box body 3, a plurality of sliding grooves 7 are formed in two side walls of the box body 3, and the distributing plates 5 are respectively slidably connected in the sliding grooves 7 on two sides of the box body 3; a plurality of discharging holes 6 are formed in the distributing plate 5, the discharging holes 6 between two adjacent layers of distributing plates 5 are arranged in a staggered mode, and the length of the distributing plate 5 is gradually increased from the top to the bottom of the box body 3. The material in the storage hopper 2 falls onto the uppermost layer of the distributing plate 5, a moving part for driving the distributing plate 5 to reciprocate is arranged on the box body 3, and an opening and closing part for controlling the opening and closing degree of the discharging hole 6 is arranged on the distributing plate 5.

Referring to fig. 3 and 4, the moving member includes a reciprocating screw 8 rotatably connected to a sidewall of the case 3, a rotation axis of the reciprocating screw 8 is parallel to a length direction of the case 3, a connecting rod 9 is screw-sleeved on the reciprocating screw 8, and two screw grooves are formed in the reciprocating screw 8, so that the connecting rod 9 is reciprocally moved without changing a rotation direction of the reciprocating screw 8. The connecting rod 9 is a T-shaped rod, one rod of the connecting rod 9 is positioned in the box body 3, and the multi-layer material dividing plates 5 are fixedly connected to the connecting rod 9; the other rod of the connecting rod 9 extends to the outside of the box 3 and is in threaded connection with the reciprocating screw 8. The box 3 is provided with a first passing groove 26, one rod of the connecting rod 9 is slidably connected in the first passing groove 26, a motor 10 for driving the reciprocating screw 8 to rotate is fixed on the box 3 through bolts, and an output shaft of the motor 10 is fixedly connected with one end of the reciprocating screw 8 and provides power for the motor 10 through the car body 1.

Referring to fig. 3, fig. 4 and fig. 5, the opening and closing member includes two opening and closing plates 16 slidably disposed in the material distributing plate 5, the length direction of the two opening and closing plates 16 is parallel to the length direction of the material distributing plate 5, the two opening and closing plates 16 are respectively located at two sides of the material outlet 6 and slide towards the direction close to or far away from the material outlet 6, an adjusting groove 17 is formed in the material distributing plate 5, and the two opening and closing plates 16 are both slidably connected in the adjusting groove 17. The two limiting blocks 18 are slidably connected in the material distributing plate 5, the limiting blocks 18 are located in the adjusting grooves 17, the two opening and closing plates 16 are located between the two limiting blocks 18 and are in butt joint with the limiting blocks 18, the two-way screw rod 19 is rotatably connected to the material distributing plate 5, threads at two ends of the two-way screw rod 19 are opposite in rotation direction, the length direction of the two-way screw rod 19 is parallel to the width direction of the material distributing plate 5, and the two limiting blocks 18 are respectively in threaded connection with two ends of the two-way screw rod 19. The box body 3 is provided with a second passing groove 27, one end of the bidirectional screw rod 19 penetrates through the second passing groove 27 to extend out of the box body 3, the bidirectional screw rod 19 slides in the second passing groove 27, and the opening and closing plate 16 is provided with an elastic piece for driving the two opening and closing plates 16 to slide towards one sides far away from each other. The elastic member comprises a spring 20 connected between the two opening and closing plates 16, two ends of the spring 20 are fixedly connected with one side, close to each other, of the two opening and closing plates 16 respectively, and the spring 20 is in a stretching state.

The bidirectional screw rod 19 is rotated, and the bidirectional screw rod 19 drives the two limiting blocks 18 to slide towards the middle part, so that the two opening and closing plates 16 are driven to be close to each other, and the opening degree of the discharge hole 6 is reduced; when the two limiting blocks 18 are moved towards two sides, the springs 20 drive the two opening and closing plates 16 to move towards two sides far away from each other, so that the opening degree of the discharging hole 6 is increased, the discharging of crushed stones with the size is convenient to adapt, and the discharging speed is controlled.

Referring to fig. 2, 3 and 6, both ends of the distributing plate 5 at the bottom of the box body 3 are provided with placing grooves 12, the placing grooves 12 penetrate through the end parts of the distributing plate 5, both ends of the distributing plate 5 at the bottom of the box body 3 are connected with lengthening plates 11, the lengthening plates 11 are slidably connected to the placing grooves 12, and the lengthening plates 11 slide along the length direction of the distributing plate 5. The extension plate 11 is also provided with a discharge hole 6, and the distribution plate 5 is provided with an adjusting piece for adjusting the position of the extension plate 11. The extension board 11 is L shaped plate for the tip of extension board 11 can stop the rubble to drop ground from the tip, reduces the possibility that both sides rubble was piled up. In this application, the sum of the lengths of the reciprocating screw 8, the distributing plate 5 and the two lengthening plates is smaller than the length of the inside of the case 3. When the extension plate 11 is increased to the maximum position, the extension plate 11 has a certain clearance with the end of the box 3, and the bottom material separating plate 5 still has a moving space.

Referring to fig. 1 and 6, the regulating member includes adjusting screw 13, threaded hole has been seted up on the extension board 11, adjusting screw 13 threaded connection is at threaded hole, standing groove 12 runs through the side that divides flitch 5 to be close to adjusting screw, connecting groove 14 has been seted up on the lateral wall of box 3, standing groove 12 obtains the side and communicates with connecting groove 14, adjusting screw 13 passes connecting groove 14 and extends outside box 3, adjusting screw 13 sliding connection is in the side and the connecting groove 14 of standing groove 12, fixed cover is equipped with fixed block 15 on the adjusting screw 13, fixed block 15 and the side butt that divides flitch 5, fixed block 15 sliding connection is in connecting groove 14. The two opening and closing plates 16 are positioned below the extension plates 11, and the length of the opening and closing plates 16 is equal to the sum of the lengths of the two extension plates 11 and the length of the material separating plate 5 at the bottom of the box body 3.

Referring to fig. 4 and 7, the flattening assembly includes a scraping plate 21 connected to a side of the case 3, the scraping plate 21 is positioned at a rear of the case 3 along a traveling direction of the vehicle body 1, the scraping plate 21 is an L-shaped plate, and a lifting member for adjusting a height of the scraping plate 21 is provided on the case 3. The lifting piece comprises an adjusting screw 22 rotationally connected to the side wall of the box body 3, a T-shaped groove 24 is formed in the box body 3, the adjusting screw 22 is rotationally connected to the T-shaped groove 24, one end of the adjusting screw 22 extends to the upper side of the box body 3, the rotation axis of the adjusting screw 22 is in the vertical direction, a sliding block 23 is fixedly welded on the scraping plate 21, threads of the sliding block 23 are sleeved on the adjusting screw 22, the sliding block 23 is slidably connected to the T-shaped groove 24, and the sliding block 23 is matched with the T-shaped groove 24. One side welded fastening that scraper blade 21 is close to box 3 has two guide boards 25, and guide board 25 is located between scraper blade 21 and the box 3, and the one end of two guide boards 25 is connected at the middle part of box 3, and the other end is connected at the both ends of scraper blade 21 respectively. Thereby making the guide plates 25 incline, the two guide plates 25 contact with the crushed stone at one end of the middle part of the box body 3, and in the moving process of the car body 1, the redundant crushed stone moves to two sides along with the guide plates 25, so as to disperse the crushed stone and facilitate the paving of the crushed stone

The implementation principle of the mud-lime-binding broken stone spreading device for road base construction is as follows: the positions of the two opening and closing plates 16 are regulated, the opening degree of the discharge hole 6 is regulated to a required opening degree, firstly, crushed stones with the largest size are added into the storage hopper 2, the crushed stones discharged from the storage hopper 2 drop onto the uppermost layer of the distributing plate 5, the reciprocating screw rod 8 drives the distributing plate 5 to move, so that the crushed stones drop into the next layer of the distributing plate 5 from the discharge hole 6 or two sides, sequentially pass through the multi-layer distributing plate 5 and then drop to the ground, the crushed stones are distributed on the distributing plate 5 for multiple times, and the crushed stones uniformly drop onto the distributing plate 5 at the bottom and are further flattened by the scraping plate 21; after the broken stone with the same size is paved, the opening of the discharging hole 6 is adjusted, and then broken stone with another size is put in for sequential repetition; thereby realizing that the diameter of the discharging hole 6 is adjusted according to different crushed stone sizes to divide materials, and being beneficial to evenly and flatly paving crushed stones with different sizes.

The embodiment of the application discloses a construction method of a road base construction-use putty-structure stone paving material, and referring to fig. 1 and 2, the construction method of the road base construction-use putty-structure stone paving material uses the road base construction-use putty-structure stone paving material device, and further comprises the following steps of;

s1: the position of the opening and closing plate 16 is regulated, the opening degree of the discharge hole 6 is regulated to the required opening degree, firstly, crushed stones with the largest size are added into the storage hopper 2, the vehicle body 1 is started to move on the roadbed, and the crushed stones in the storage hopper 2 are discharged;

s2: the broken stone discharged from the storage hopper 2 falls onto the uppermost layer of the distributing plate 5, the reciprocating screw rod 8 drives the distributing plate 5 to move, so that the broken stone falls into the next layer of the distributing plate 5 from the discharging hole 6 or two sides, sequentially passes through the multi-layer distributing plate 5 and then falls onto the ground, the broken stone is distributed on the distributing plate 5 for a plurality of times, the broken stone uniformly distributed on the distributing plate 5 at the bottom falls, and the broken stone is further flattened by the scraping plate 21;

s3: after the broken stone of the same size is paved, stopping the machine to adjust the opening of the discharge hole 6, putting broken stone of another size into the machine, and repeating paving until the complete paving is completed.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a road base construction is with mud ash knot rubble spreading device which characterized in that: including automobile body (1), storage hopper (2), ejection of compact subassembly and amortization subassembly, storage hopper (2) set up on automobile body (1), ejection of compact subassembly includes box (3), the top and the storage hopper (2) intercommunication of box (3), discharge gate (4) have been seted up to the bottom of box (3), be provided with multilayer feed divider (5) in box (3), a plurality of discharge holes (6) have been seted up on feed divider (5), the length of feed divider (5) is from the top towards the bottom of box (3) increase gradually, the material in storage hopper (2) falls on uppermost feed divider (5), be provided with the moving part that is used for driving feed divider (5) reciprocating motion on box (3), be provided with on feed divider (5) and be used for controlling the opening and close piece of discharge gate (6) degree, amortization subassembly is used for amortizing the discharged material of discharge gate (4).

2. The device for paving the mud-lime-binding crushed stone for road base construction according to claim 1, wherein: offer a plurality of spouts (7) in box (3), divide flitch (5) sliding connection respectively in spout (7), divide flitch (5) to slide along the length direction of box (3), move piece including rotating reciprocating screw (8) that set up on box (3), reciprocating screw (8) axis of rotation is on a parallel with the length direction of box (3), the last thread bush of reciprocating screw (8) is equipped with connecting rod (9), the multilayer divide flitch (5) all to connect on connecting rod (9), be provided with on box (3) and be used for driving reciprocating screw (8) pivoted motor (10).

3. The device for paving the mud-lime-binding crushed stone for road base construction according to claim 1, wherein: the automatic feeding device is characterized in that extension plates (11) are arranged at two ends of a material distribution plate (5) at the bottom of the box body (3), the extension plates (11) are slidably connected to the material distribution plate (5), the extension plates (11) slide along the length direction of the material distribution plate (5), discharge holes (6) are formed in the extension plates (11) in the same way, and adjusting pieces for adjusting the positions of the extension plates (11) are arranged on the material distribution plate (5).

4. A road base construction pug-like gravel spreading device according to claim 3, wherein: the utility model provides a bin gate (5) of box (3) bottom all sets up standing groove (12), extension board (11) sliding connection is in standing groove (12), the regulating part includes adjusting screw (13), set up threaded hole on extension board (11), adjusting screw (13) threaded connection is at threaded hole, standing groove (12) run through the side that divides flitch (5) to be close to adjusting screw (13), connecting groove (14) have been seted up on box (3), standing groove (12) and connecting groove (14) intercommunication, adjusting screw (13) pass connecting groove (14) and extend to outside box (3), the cover is equipped with fixed block (15) on adjusting screw (13), side butt of fixed block (15) and division flitch (5).

5. The device for paving the mud-lime-binding crushed stone for road base construction according to claim 1, wherein: the automatic opening and closing device comprises two opening and closing plates (16) which are arranged in a material distributing plate (5) in a sliding manner, wherein the two opening and closing plates (16) are respectively positioned at two sides of a material discharging hole (6) and slide towards the direction close to or away from the material discharging hole (6), an adjusting groove (17) is formed in the material distributing plate (5), the two opening and closing plates (16) are respectively and slidably connected in the adjusting groove (17), two limiting blocks (18) are slidably arranged on the material distributing plate (5), the limiting blocks (18) are positioned in the adjusting groove (17), the two opening and closing plates (16) are respectively positioned between the two limiting blocks (18) and are in butt joint with the limiting blocks (18), a bidirectional screw rod (19) is rotationally arranged at the material distributing plate (5), the two limiting blocks (18) are respectively connected with two ends of the bidirectional screw rod (19) in a threaded manner, one end of the bidirectional screw rod (19) extends out of a box body (3), and an elastic piece for driving the two opening and closing plates (16) to slide towards one side far away from each other is arranged on the opening and closing plates (16).

6. The device for paving the mud-lime-binding crushed stone for road base construction according to claim 5, wherein: the elastic piece comprises a spring (20) arranged between the two opening and closing plates (16), and two ends of the spring (20) are respectively connected with the two opening and closing plates (16).

7. The device for paving the mud-lime-binding crushed stone for road base construction according to claim 1, wherein: the flattening component comprises a scraping plate (21) arranged on the side edge of the box body (3), and a lifting piece for adjusting the height of the scraping plate (21) is arranged on the box body (3).

8. The device for paving the mud-lime-binding crushed stone for road base construction according to claim 7, wherein: the lifting part comprises an adjusting screw (22) arranged on the box body (3), the rotation axis of the adjusting screw (22) is in the vertical direction, a sliding block (23) is arranged on the scraping plate (21), the sliding block (23) is sleeved on the adjusting screw (22) in a threaded mode, a T-shaped groove (24) is formed in the box body (3), the sliding block (23) is slidably connected in the T-shaped groove (24), and the sliding block (23) is matched with the T-shaped groove (24).

9. The device for paving the mud-lime-binding crushed stone for road base construction according to claim 7, wherein: one side that scraper blade (21) is close to box (3) is provided with two guide boards (25), guide board (25) are located between scraper blade (21) and box (3), two the one end of guide board (25) is connected at the middle part of box (3), and the other end is connected at the both ends of scraper blade (21) respectively.

10. A construction method of a mud-lime-bonded broken stone paving material for road base construction is characterized by comprising the following steps: use of a road base construction pug-setting stone paving device according to any of claims 1-8, further comprising;

s1: the opening and closing piece is regulated, the opening degree of the discharge hole (6) is regulated to a required opening degree, firstly crushed stones with the largest size are added into the storage hopper (2), the vehicle body (1) is started to move on the roadbed, and the crushed stones in the storage hopper (2) are discharged;

s2: the broken stone discharged from the storage hopper (2) falls onto the uppermost layer of the distributing plate (5), the moving part drives the distributing plate (5) to move, so that the broken stone falls into the next layer of the distributing plate (5) from the discharging hole (6) or two sides, sequentially passes through the multiple layers of the distributing plates (5) and then falls onto the ground, and the broken stone is distributed on the distributing plate (5) for a plurality of times, so that the broken stone uniformly distributed on the distributing plate (5) at the bottom falls, and the broken stone is further flattened by the flattening component;

s3: after the broken stone of the same size is paved, stopping the machine to adjust the opening of the discharge hole (6), putting broken stone of another size into the machine, and repeating paving until the complete paving is finished.