CN116116545A - Graded stone crushing device for pavement construction - Google Patents

Abstract

The invention discloses a graded stone breaking device for pavement construction, which relates to the technical field of pavement construction stone breaking, and comprises a bottom box and a jaw crusher, wherein a secondary stone breaking mechanism is arranged in the bottom box, a primary stone breaking discharging mechanism is arranged at the upper end of the bottom box, and a negative pressure dust removing mechanism is arranged at one side of the bottom box; the secondary stone crushing mechanism comprises a speed reducing motor, a crushing roller and an accessory component, wherein the accessory component is used for positioning the crushing roller; the primary stone breaking discharging mechanism comprises a guide hopper, a driving part and a guide part, wherein the driving part drives the guide hopper to move in the horizontal direction, and the guide part limits the guide hopper to rotate from the horizontal direction to the vertical direction. The invention has the beneficial effects that the crushing degree of the raw materials can be switched according to actual practice through the cooperation of the jaw crusher and the crushing roller, thereby meeting the actual construction requirement; the dust removing operation is carried out on the position of the discharge hole through the functions of the spray header and the negative pressure dust removing mechanism, so that larger smoke dust is prevented from being released to the surrounding environment, and the environment is favorably treated.

Description

Graded stone crushing device for pavement construction

Technical Field

The invention relates to the technical field of road construction rubble, in particular to a graded rubble device for pavement construction.

Background

Stone is a common mineral material, and is frequently used in the road construction process, but natural stone is different in size and cannot be directly utilized, the stone is crushed and then used, road construction is divided into multiple layers, the paving of different layers has different requirements on the size of broken stone, for example, the paving broken stone diameter of a road base layer can be larger, and the paving broken stone diameter of a road surface is smaller;

existing stone crushing equipment, such as the patent with the application number of CN201811400844.X, is a building construction stone crushing device, which improves the traditional jaw crusher in terms of dust removal, but has the following drawbacks (the traditional jaw crusher has the advantages of high efficiency, easy maintenance, good wear resistance, but the produced stone has larger diameter and extremely uneven diameter); 1. because of the limitation of the structure, the crushed stone with smaller diameter is not easy to crush, and the diameter of the discharged crushed stone is single, so that the requirements of crushed stones with different diameters in construction cannot be met;

for example, chinese patent document CN202122937541.5 entitled a multi-stage stone crusher for road construction, which realizes the output of crushed stones with different diameters by means of screening, but has the following drawbacks; 1. the feed inlet and the discharge outlet are in an open state, and no corresponding dust removing mechanism is arranged, so that more smoke dust is released to the surrounding environment during the operation of the crushed stone, and the environment is not easy to treat.

Disclosure of Invention

The invention aims to overcome the defects, and provides a graded stone breaking device for pavement construction, which solves the problems.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the grading stone crushing device for pavement construction comprises a bottom box and a jaw crusher, wherein the jaw crusher is arranged above the bottom box, a raw material output end of the jaw crusher is in an intercommunication state with the bottom box, a spray header is arranged at a raw material input end of the jaw crusher, a first discharge port is arranged at one side of the upper end of the bottom box, a second discharge port is arranged at one side of the lower end of the bottom box, a secondary stone crushing mechanism is arranged in the bottom box, a primary stone crushing discharge mechanism is arranged at the upper end of the bottom box, and a negative pressure dust removing mechanism is arranged at one side of the bottom box;

the secondary stone crushing mechanism comprises a speed reducing motor, a crushing roller and an accessory component, wherein the speed reducing motor drives the crushing roller to oppositely rotate through the accessory component, and the accessory component is also used for positioning the crushing roller;

the primary broken stone discharging mechanism comprises a guide hopper, a driving part and a guide part, wherein the driving part drives the guide hopper to move in the horizontal direction, and the guide part limits the guide hopper to rotate from the horizontal direction to the vertical direction;

the negative pressure dust removing mechanism comprises a dust collector, a negative pressure ring, a first hose, a second hose, a communicating component and a triggering component, negative pressure generated by the dust collector is transmitted to the negative pressure ring through the communicating component, the first hose and the second hose, and ventilation or sealing of the first hose and the second hose can be selectively controlled through the triggering component by rotation of the guide hopper.

Further, the accessory assembly comprises a first bearing arranged on two sides of the bottom box, two pairs of first bearings are arranged, a pair of crushing rollers are arranged on an inner ring of the first bearing, a first gear meshed with one another is arranged at one end of each crushing roller, a first belt pulley is arranged on one end face of each gear, one reduction motor is arranged on one side of the bottom box, a second belt pulley is arranged at the rotating end of the reduction motor, and a transmission belt is arranged between the first belt pulley and the second belt pulley.

Further, the drive part comprises a first sliding groove arranged at two sides of the discharge hole, a sliding block is arranged at one end of the sliding groove, the sliding block is in sliding connection with the first sliding groove, a second bearing is arranged at one end of the sliding groove, a stepping motor is arranged at two ends of the sliding groove, a threaded shaft in threaded connection with the sliding block is arranged at the rotating end of the stepping motor, one end of the threaded shaft is fixedly connected with the two inner rings of the bearing, an L-shaped connecting rod is arranged on the upper surface of the sliding block, and a U-shaped fork is arranged at one end of the L-shaped connecting rod.

Further, the guide part comprises guide plates arranged on two sides of the first discharge hole, one end of each guide plate is fixedly connected with the bottom box, the other end of each guide plate is fixedly connected with the first discharge hole, two pairs of guide plates are arranged, one end of each guide plate, which is positioned at the first discharge hole, is provided with an arc-shaped groove, one end of each arc-shaped groove is closed, and the other end of each arc-shaped groove is connected with the guide plate; the supporting rods are arranged on two sides of the upper end of the bottom box, the swinging blocks are arranged at the upper ends of the supporting rods and hinged with the supporting rods, the guide grooves are formed in two ends of the lower surface of the guide hopper, the swinging blocks are in sliding connection with the guide grooves, the connecting plates are arranged on the side surfaces of the guide hopper, the pin shafts are arranged on the side surfaces of the connecting plates, and the pin shafts penetrate through the guide plates and the U-shaped forks.

Further, the communication assembly comprises a T-shaped pipe arranged at the input end of the dust collector, a first hose is arranged at the upper end of the T-shaped pipe, a second hose is arranged at the lower end of the T-shaped pipe, two negative pressure rings are respectively communicated with the first hose and the second hose, the negative pressure rings are respectively positioned at one side of the first discharging port and one side of the second discharging port, the negative pressure rings are fixedly connected with the bottom box, the negative pressure rings are in a hollow state, and vent holes are formed in the inner sides of the negative pressure rings.

Further, the trigger assembly comprises a pushing plate arranged at the center of the side surface of the guide hopper, a rectangular groove is formed in one side of the bottom box, a connecting frame is arranged on one side of the rectangular groove, a second hose penetrates through the connecting frame, rectangular holes are formed in the side surface of the connecting frame, two rectangular holes are formed in the rectangular holes, a mouth-shaped frame is arranged in the rectangular holes and is in sliding connection with the rectangular holes, and a compression spring is arranged between the mouth-shaped frame and the rectangular groove.

Further, the side surface mounting of guide hopper has extension spring, and extension spring is equipped with four and is located the four corners department of guide hopper side surface, and the rubber slab is installed to extension spring one end, and the rubber slab profile is greater than a discharge gate profile.

Further, conical protrusions are arranged on the side surface of the crushing roller.

Furthermore, the lower end of the guide hopper is an inclined plane, and the lower end of the guide hopper is in a hollow state.

The beneficial effects of the invention are as follows: the crushing degree of raw materials can be switched according to actual demands through the cooperation of the jaw crusher and the crushing roller, when the diameter of the required crushed stone is larger, jaw crushing can be only carried out, and when the diameter of the required crushed stone is smaller, jaw crushing and crushing by the crushing roller can be simultaneously carried out, so that crushed stone with smaller diameter and more uniform diameter can be obtained, and the actual construction demands can be met;

the dust removing operation can be carried out on the positions of the feed inlet and the discharge outlet through the functions of the spray header and the negative pressure dust removing mechanism, so that larger smoke dust is prevented from being released to the surrounding environment, and the environment is favorably treated;

when the dust removing effect is achieved, the dust removing operation can be automatically selected to be carried out on different discharge ports through the action of the trigger component, and when one of the discharge ports does not discharge, negative pressure dust removing at the position is omitted, so that the energy saving effect is achieved;

through the movement of the guide hopper, crushed stones with different diameters can be conveniently output on the premise of not obstructing the secondary crushing of the raw materials.

Drawings

FIG. 1 is a schematic front view of a graded stone crusher for road construction according to the present invention;

FIG. 2 is a schematic side view of a guide scoop;

FIG. 3 is a schematic view of the guide hoppers;

fig. 4 is an enlarged schematic view of the driving section;

FIG. 5 is a schematic cross-sectional view of a guide scoop;

FIG. 6 is a schematic view of a negative pressure ring;

FIG. 7 is a schematic view of a vent;

FIG. 8 is a schematic top view of the accessory assembly;

FIG. 9 is a schematic view of a trigger assembly;

FIG. 10 is a partial schematic view of a primary rock breaking discharge mechanism;

in the figure, 1, a bottom box; 2. jaw crusher; 3. a spray header; 4. a first discharging hole; 5. a second discharging port; 6. a speed reducing motor; 7. a crushing roller; 8. an accessory assembly; 9. a guide hopper; 10. a driving section; 11. a guide part; 12. a dust collector; 13. a negative pressure ring; 14. a first hose; 15. a second hose; 16. a communication assembly; 17. a trigger assembly; 18. a first bearing; 19. a first gear; 20. a first belt pulley; 21. a belt pulley II; 22. a transmission belt; 23. a first chute; 24. a sliding block; 25. a second bearing; 26. a stepping motor; 27. a threaded shaft; 28. an L-shaped connecting rod; 29. a U-shaped fork; 30. a guide plate; 31. an arc-shaped groove; 32. a support rod; 33. a swinging block; 34. a guide groove; 35. a connecting plate; 36. a pin shaft; 38. a T-shaped pipe; 39. a vent hole; 40. a pushing plate; 41. rectangular grooves; 42. a connecting frame; 43. a rectangular hole; 44. a mouth-shaped frame; 45. a compression spring; 47. a tension spring; 48. a rubber plate; 49. conical protrusions.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized below, may be had by reference to embodiments, some of which are illustrated in the appended drawings, wherein the detailed description sets forth the best mode of the invention, but which are intended to be carried out in many different ways than those herein set forth, and those skilled in the art may make similar improvements without departing from the spirit of the invention and therefore are not limited to the specific embodiments disclosed below.

The application provides a hierarchical rubble device is used in road surface construction please refer to fig. 1-10: the device comprises a bottom box 1 and a jaw crusher 2, wherein the jaw crusher 2 is arranged above the bottom box 1, the raw material output end of the jaw crusher 2 is in an intercommunication state with the bottom box 1, a spray header 3 is arranged at the raw material input end of the jaw crusher 2, a discharge port I4 is arranged at one side of the upper end of the bottom box 1, a discharge port II 5 is arranged at one side of the lower end of the bottom box 1, a secondary stone breaking mechanism is arranged in the bottom box 1, a primary stone breaking discharge mechanism is arranged at the upper end of the bottom box 1, and a negative pressure dust removing mechanism is arranged at one side of the bottom box 1;

the secondary stone crushing mechanism comprises a gear motor 6, a crushing roller 7 and an accessory component 8, wherein the gear motor 6 drives the crushing roller 7 to rotate oppositely through the accessory component 8, and the accessory component 8 is also used for positioning the crushing roller 7;

the primary stone breaking discharging mechanism comprises a guide hopper 9, a driving part 10 and a guide part 11, wherein the driving part 10 drives the guide hopper 9 to move in the horizontal direction, and the guide part 11 limits the guide hopper 9 to rotate from the horizontal direction to the vertical direction;

the negative pressure dust removing mechanism comprises a dust collector 12, a negative pressure ring 13, a first hose 14, a second hose 15, a communicating component 16 and a triggering component 17, negative pressure generated by the dust collector 12 is transmitted to the negative pressure ring 13 through the communicating component 16, the first hose 14 and the second hose 15, and ventilation or sealing of the first hose 14 and the second hose 15 can be selectively controlled through the triggering component 17 by rotating the guide hopper 9.

In practical application, equipment matched with the spray header 3, such as a water tank, a suction pump and a connecting pipe, are arranged in the device, and the water is sprayed at the raw material inlet of the jaw crusher 2 by the spray header 3, so that more dust is prevented from being discharged; crushing the raw materials with larger volume into primary crushing by a jaw crusher 2;

according to the actual demand, when the particle diameter requirement on crushed stone is smaller, the guide hopper 9 is controlled to be positioned at the outer side of the bottom box 1, at the moment, the raw material after primary crushing moves to the position of the crushing roller 7, the rotation of the speed reducing motor 6 is controlled to indirectly drive the crushing roller 7 to rotate oppositely, when the raw material after primary crushing passes through the crushing roller 7, secondary crushing can be carried out, and after secondary crushing, the raw material is discharged through the second discharge port 5;

according to actual requirements, when the particle diameter of crushed stone is required to be large, the driving part 10 is controlled to work, the driving part 10 drives the guide hopper 9 to move into the bottom box 1, and at the moment, the guide hopper 9 moves to be right above the crushing roller 7, so that the raw materials after primary crushing are prevented from entering the crushing roller 7, and the raw materials after primary crushing are discharged through the second discharge port 5 under the action of the guide hopper 9; the guide hopper 9 can stably rotate from a vertical state to a horizontal state (can also be reversely operated, and can rotate from the horizontal direction to the vertical direction) by the action of the guide part 11;

the second discharge port 5 can be plugged by following the movement of the guide hopper 9 under the action of the rubber plate 48, so that dust is prevented from being discharged through the second discharge port 5;

the negative pressure can be indirectly generated at the position of the negative pressure ring 13 through the action of the dust collector 12, so that dust removal operation is carried out on the positions of the first discharge port 4 and the second discharge port 5; whether the negative pressure ring 13 at different positions works or not can be realized through the action of the trigger assembly 17; the method is as follows;

when the guide hopper 9 is positioned outside the bottom box 1 and is in a vertical state, the crushed raw materials are discharged through the second discharge hole 5, at the moment, the guide hopper 9 drives the pushing plate 40 to press the first hose 14, the first hose 14 is in a closed state, the negative pressure ring 13 at the first position of the first discharge hole is prevented from working, the guide hopper 9 presses the mouth frame 44, the mouth frame 44 does not press the second hose 15, the negative pressure ring 13 at the second position of the discharge hole 5 is in a working state, and smoke dust generated by crushing can be collected in a negative pressure mode;

when the guide hopper 9 is completely positioned in the bottom box 1 and is in a horizontal state, the guide hopper 9 drives the pushing plate 40 to release the first hose 14, the first hose 14 is in a smooth state, the negative pressure ring 13 positioned at the first 4 positions of the discharge ports works, and the negative pressure ring 13 positioned at the second 5 positions of the discharge ports stops working, so that an energy-saving effect is realized.

Referring to fig. 1, 2 and 8, the accessory assembly 8 comprises a first bearing 18 installed at two sides of the bottom case 1, the first bearing 18 is provided with two pairs, the crushing roller 7 is provided with one pair and installed at an inner ring of the first bearing 18, one end of the crushing roller 7 is provided with a first gear 19 meshed with each other, the end surface of the first gear 19 is provided with a first belt pulley 20, the first belt pulley 20 is provided with one, the gear motor 6 is installed at one side of the bottom case 1, the rotating end of the gear motor 6 is provided with a second belt pulley 21, and a driving belt 22 is installed between the first belt pulley 20 and the second belt pulley 21.

In practical application, the gear motor 6 is controlled to rotate to directly drive the belt pulley II 21 to rotate, the belt pulley II 21 rotates to drive the belt pulley I20 to rotate under the action of the driving belt 22, the belt pulley I20 rotates to drive one of the gears I19 to rotate, the gear I19 rotates to drive the other gear I19 to rotate oppositely, the gear I19 rotates to drive the two crushing rollers 7 to rotate oppositely, and the raw materials after primary crushing can be crushed secondarily.

Referring to fig. 1, 3, 4 and 10, the driving part 10 includes a first chute 23 installed at both sides of a first discharge port 4, a sliding block 24 installed at one end of the first chute 23, the sliding block 24 slidably connected with the first chute 23, a second bearing 25 installed at one end of the first chute 23, a stepping motor 26 installed at both ends of the first chute 23, a threaded shaft 27 installed at a rotating end of the stepping motor 26 and screwed with the sliding block 24, one end of the threaded shaft 27 fixedly connected with an inner ring of the second bearing 25, an L-shaped connecting rod 28 installed on an upper surface of the sliding block 24, and a U-shaped fork 29 installed at one end of the L-shaped connecting rod 28.

In practical application, the stepper motor 26 is controlled to rotate to drive the threaded shaft 27 to rotate, the threaded shaft 27 rotates to drive the sliding block 24 to move towards the stepper motor 26, the sliding block 24 moves to drive the L-shaped connecting rod 28 and the U-shaped fork 29 to move towards the left, the guiding hopper 9 can be indirectly driven to move towards the left in the process and simultaneously rotate for 90 degrees, and the sliding block 24 can slide stably under the action of the first chute 23.

Referring to fig. 1, 2, 4, 5 and 10, the guide part 11 includes guide plates 30 installed at both sides of the first discharge port 4, one end of each guide plate 30 is fixedly connected with the bottom box 1, the other end of each guide plate 30 is fixedly connected with the first discharge port 4, two pairs of guide plates 30 are provided, one end of each guide plate 30 located at the first discharge port 4 is provided with an arc-shaped groove 31, one end of each arc-shaped groove 31 is closed, and the other end of each arc-shaped groove 31 is connected with each guide plate 30; the supporting rods 32 are arranged on two sides of the upper end of the bottom box 1, the swinging blocks 33 are arranged on the upper ends of the supporting rods 32, the swinging blocks 33 are hinged with the supporting rods 32, the guide grooves 34 are formed in two ends of the lower surface of the guide bucket 9, the swinging blocks 33 are in sliding connection with the guide grooves 34, the connecting plates 35 are arranged on the side surfaces of the guide bucket 9, the pin shafts 36 are arranged on the side surfaces of the connecting plates 35, and the pin shafts 36 penetrate through the guide plates 30 and the U-shaped forks 29.

In practical application, when the guide hopper 9 slides, the connecting plate 35 and the pin shaft 36 are driven to slide between the guide plates 30, the pin shaft 36 slides stably under the action of the guide plates 30, when the pin shaft 36 moves to the arc-shaped groove 31, the position of the pin shaft 36 changes in the vertical direction under the action of the driving of the arc-shaped groove 31, and as the height of the position of the swinging block 33 is unchanged, the guide hopper 9 is driven to rotate, the swinging block 33 can be attached to the guide groove 34 under the action of rotation, and the whole movement process is shown in fig. 2 to 3; because the bottom box 1 has larger dust, the moving parts need to be dustproof.

Referring to fig. 1, 6 and 7, the communication assembly 16 includes a T-shaped pipe 38 installed at an input end of the dust collector 12, a first hose 14 is installed at an upper end of the T-shaped pipe 38, a second hose 15 is installed at a lower end of the T-shaped pipe 38, two negative pressure rings 13 are respectively arranged and are respectively communicated with the first hose 14 and the second hose 15, the negative pressure rings 13 are respectively located at one sides of a first discharge port 4 and a second discharge port 5, the negative pressure rings 13 are fixedly connected with the bottom case 1, the negative pressure rings 13 are in a hollow state, and ventilation holes 39 are formed in the inner sides of the negative pressure rings 13.

Specifically, in practical application, when the crushed raw materials are discharged, the dust collector 12 is controlled to work, negative pressure generated by the work of the dust collector 12 is transmitted to the positions of the first hose 14 and the second hose 15 through the T-shaped pipe 38, the negative pressure is transmitted to the position of the negative pressure ring 13 through the action of the first hose 14 and the second hose 15, and finally, the position of the vent hole 39 generates negative pressure, so that smoke dust near the first discharge hole 4 and the second discharge hole 5 is collected.

Referring to fig. 1, 2, 3, 6 and 9, the trigger assembly 17 includes a push plate 40 installed at the center of the side surface of the guide bucket 9, a rectangular groove 41 is provided at one side of the bottom case 1, a connection frame 42 is installed at one side of the rectangular groove 41, a second hose 15 passes through the connection frame 42, a rectangular hole 43 is provided at the side surface of the connection frame 42, two rectangular holes 43 are provided, a mouth-shaped frame 44 is provided in the rectangular hole 43, the mouth-shaped frame 44 is slidably connected with the rectangular hole 43, and a compression spring 45 is installed between the mouth-shaped frame 44 and the rectangular groove 41.

In practical application, when the guide hopper 9 is in a vertical state, the guide hopper 9 drives the pushing plate 40 to press the first hose 14, the first hose 14 is not ventilated, and the guide hopper 9 also presses the mouth-shaped frame 44, as shown in fig. 9, the mouth-shaped frame 44 does not press the second hose 15, and the second hose 15 transmits negative pressure to the second discharge port 5, so that targeted negative pressure dust removal is realized;

when the guide hopper 9 is in the horizontal state, the guide hopper 9 releases the mouth frame 44, the mouth frame 44 presses the second hose 15 under the action of the compression spring 45, the second hose 15 is in the non-ventilated state at this time, and the first hose 14 is in the ventilated state.

Referring to fig. 1, 2, 3 and 4, the side surface of the guide hopper 9 is provided with four extension springs 47, the extension springs 47 are positioned at four corners of the side surface of the guide hopper 9, one end of each extension spring 47 is provided with a rubber plate 48, and the contour of each rubber plate 48 is larger than that of the corresponding discharge port 4.

In practical application, when the guide hopper 9 is in a vertical state, the rubber plate 48 can be pulled to move to the position of the first discharge port 4 under the action of the tension spring 47, so that the position of the first discharge port 4 is blocked.

Referring to fig. 1 and 8, the crushing roller 7 side surface is mounted with tapered projections 49.

In particular, in practical applications, the material may be further crushed by the provision of the tapered projections 49.

Referring to fig. 2, 3 and 4, the lower end of the guide bucket 9 is inclined, and the lower end of the guide bucket 9 is hollow.

In practical application, the lower end of the guide hopper 9 is provided with an inclined plane so as to facilitate the discharge of crushed raw materials, and the lower end of the guide hopper 9 is provided with a hollow state so as to reduce the self mass of the guide hopper 9; the electric appliance is electrically connected with an external controller;

in the bottom box 1, a protection plate is arranged above the crushing roller 7, and the space above the crushing roller 7 and the space below the crushing roller 7 can be separated by the action of the protection plate as much as possible, so that smoke dust is prevented from being discharged from the second discharge port 5 when the crushing roller 7 does not work.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention, it being understood that variations and modifications can be made by those skilled in the art without departing from the spirit of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The foregoing is not necessarily a prior art, and falls within the technical scope of the inventors.

Claims (9)

1. The utility model provides a hierarchical rubble device for road construction, includes base box (1) and jaw breaker (2), jaw breaker (2) are installed in base box (1) top, and jaw breaker (2) raw materials output is in intercommunication state with base box (1), and shower head (3) are installed to jaw breaker (2) raw materials input, and base box (1) upper end one side is equipped with discharge gate one (4), and base box (1) lower extreme one side is equipped with discharge gate two (5), a serial communication port, be equipped with secondary rubble mechanism in base box (1), base box (1) upper end is equipped with a rubble discharge mechanism, and base box (1) one side is equipped with negative pressure dust removal mechanism;

the secondary stone crushing mechanism comprises a speed reducing motor (6), a crushing roller (7) and an accessory component (8), wherein the speed reducing motor (6) drives the crushing roller (7) to rotate oppositely through the accessory component (8), and the accessory component (8) is also used for positioning the crushing roller (7);

the primary crushed stone discharging mechanism comprises a guide hopper (9), a driving part (10) and a guide part (11), wherein the driving part (10) drives the guide hopper (9) to move in the horizontal direction, and the guide part (11) limits the guide hopper (9) to rotate from the horizontal direction to the vertical direction;

the negative pressure dust removing mechanism comprises a dust collector (12), a negative pressure ring (13), a first hose (14), a second hose (15), a communication assembly (16) and a trigger assembly (17), negative pressure generated by the dust collector (12) is transmitted to the negative pressure ring (13) through the communication assembly (16), the first hose (14) and the second hose (15), and ventilation or sealing of the first hose (14) and the second hose (15) can be selectively controlled by rotation of the guide hopper (9) through the trigger assembly (17).

2. The grading stone crusher for pavement construction according to claim 1, wherein the accessory assembly (8) comprises a first bearing (18) arranged on two sides of the bottom box (1), the first bearing (18) is provided with two pairs, the crushing roller (7) is provided with one pair and is arranged on an inner ring of the first bearing (18), one end of the crushing roller (7) is provided with a first gear (19) meshed with one another, the end face of the first gear (19) is provided with a first belt pulley (20), the first belt pulley (20) is provided with one, the gear motor (6) is arranged on one side of the bottom box (1), the rotating end of the gear motor (6) is provided with a second belt pulley (21), and a driving belt (22) is arranged between the first belt pulley (20) and the second belt pulley (21).

3. The grading stone crusher for pavement construction according to claim 2, wherein the driving part (10) comprises a first chute (23) arranged at two sides of the first discharge hole (4), a sliding block (24) is arranged at one end of the first chute (23), the sliding block (24) is in sliding connection with the first chute (23), a second bearing (25) is arranged at one end of the first chute (23), a stepping motor (26) is arranged at two ends of the first chute (23), a threaded shaft (27) in threaded connection with the sliding block (24) is arranged at the rotating end of the stepping motor (26), one end of the threaded shaft (27) is fixedly connected with the inner ring of the second bearing (25), an L-shaped connecting rod (28) is arranged on the upper surface of the sliding block (24), and a U-shaped fork (29) is arranged at one end of the L-shaped connecting rod (28).

4. The graded stone crusher for pavement construction according to claim 3, wherein the guide part (11) comprises guide plates (30) arranged at two sides of the first discharge port (4), one end of each guide plate (30) is fixedly connected with the bottom box (1), the other end of each guide plate (30) is fixedly connected with the first discharge port (4), the guide plates (30) are provided with two pairs, one end of each guide plate (30) positioned at the first discharge port (4) is provided with an arc-shaped groove (31), one end of each arc-shaped groove (31) is closed, and the other end of each arc-shaped groove (31) is connected with the corresponding guide plate (30); the supporting rods (32) are arranged on two sides of the upper end of the bottom box (1), the swinging blocks (33) are arranged at the upper ends of the supporting rods (32), the swinging blocks (33) are hinged to the supporting rods (32), the guide grooves (34) are formed in two ends of the lower surface of the guide hopper (9), the swinging blocks (33) are slidably connected with the guide grooves (34), the connecting plates (35) are arranged on the side surfaces of the guide hopper (9), the pin shafts (36) are arranged on the side surfaces of the connecting plates (35), and the pin shafts (36) penetrate through the guide plates (30) and the U-shaped forks (29) simultaneously.

5. The grading stone crusher for pavement construction according to claim 4, wherein the communicating component (16) comprises a T-shaped pipe (38) arranged at the input end of the dust collector (12), the first hose (14) is arranged at the upper end of the T-shaped pipe (38), the second hose (15) is arranged at the lower end of the T-shaped pipe (38), the negative pressure ring (13) is provided with two negative pressure rings which are respectively communicated with the first hose (14) and the second hose (15), the negative pressure rings (13) are respectively arranged at one side of the first discharging hole (4) and one side of the second discharging hole (5), the negative pressure rings (13) are fixedly connected with the bottom box (1), the negative pressure rings (13) are in a hollow state, and vent holes (39) are formed in the inner sides of the negative pressure rings (13).

6. The grading stone crusher for pavement construction according to claim 5, wherein the trigger assembly (17) comprises a pushing plate (40) arranged at the center of the side surface of the guide hopper (9), a rectangular groove (41) is formed in one side of the bottom box (1), a connecting frame (42) is arranged on one side of the rectangular groove (41), a second hose (15) penetrates through the connecting frame (42), rectangular holes (43) are formed in the side surface of the connecting frame (42), two rectangular holes (43) are formed, a mouth-shaped frame (44) is arranged in the rectangular holes (43), the mouth-shaped frame (44) is in sliding connection with the rectangular holes (43), and a compression spring (45) is arranged between the mouth-shaped frame (44) and the rectangular groove (41).

7. The graded stone breaker for pavement construction according to any one of claims 1-6, wherein the side surface of the guide hopper (9) is provided with four extension springs (47), the extension springs (47) are positioned at four corners of the side surface of the guide hopper (9), one end of each extension spring (47) is provided with a rubber plate (48), and the contour of each rubber plate (48) is larger than that of the corresponding discharge port (4).

8. A road construction grade breaking device according to any one of claims 1-6, characterized in that the breaking roller (7) side surface is provided with conical projections (49).

9. The graded stone crusher for road construction according to any one of claims 1 to 6, wherein the lower end of the guide hopper (9) is inclined, and the lower end of the guide hopper (9) is hollow.

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