CN111764233B

CN111764233B - Road engineering road surface asphalt paving equipment

Info

Publication number: CN111764233B
Application number: CN202010667509.7A
Authority: CN
Inventors: 孙朋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-09-21
Anticipated expiration: 2040-07-13
Also published as: CN111764233A

Abstract

The invention relates to road engineering pavement asphalt paving equipment which comprises a machine body, a support, a spiral feeding device and a leveling device. The support is connected to the rear side of the machine body, the spiral feeding device extends in the left-right direction, the spiral feeding device is installed on the support and located behind the machine body, and asphalt flows down from the machine body and is distributed on a road by the spiral feeding device. The leveling device comprises a carrier roller rod, a sleeve, a switch device, a conveying belt and a leveling rod, wherein the spiral feeding device is used for conveying and driving the carrier roller rod to rotate, the switch device is configured to be matched with the sleeve and the carrier roller rod when being touched by the raised asphalt, so that the carrier roller rod drives the sleeve to rotate, the sleeve is used for conveying and driving the conveying belt to rotate, and the leveling rod on the conveying belt is used for leveling the raised asphalt. The road engineering pavement asphalt paving equipment provided by the invention can automatically level the accumulated asphalt inwards when turning, improves the pavement paving quality and reduces the manpower consumption.

Description

Road engineering road surface asphalt paving equipment

Technical Field

The invention relates to the technical field of pavers, in particular to road engineering pavement asphalt paving equipment.

Background

When the existing asphalt paver is used for constructing a road surface needing to turn, the condition that one side of the paved road surface is high and low can occur, a plurality of workers are needed to pave the high asphalt manually, and a large amount of manpower is consumed. X discloses an asphalt mixture paver, including crossbeam mounting bracket, first motor, second motor, speed reducer and electric cabinet, first motor and second motor are bolted respectively to both sides about the top of crossbeam mounting bracket, the electric cabinet is installed to the last surface bolt of crossbeam mounting bracket, first bearing frame is installed to the equal bolt of the left and right sides lower surface of crossbeam mounting bracket, the end cover is installed to the terminal bolt of driven shaft, second bearing frame is all installed to the middle part below the place ahead both sides of crossbeam mounting bracket, first roller bearing and second roller bearing that rolls all set up the place ahead that rolls roller bearing and fourth roller bearing at the third, the outside welding of second bearing has the roller bearing. This bituminous mixture paver has adopted the axle design that rolls of sectional type, is coordinating the use of two motors for the device can carry out the holistic turn of device through the difference in rotational speed of the axle that rolls in the in-process that uses, but the uneven condition of pitch thickness appears when turning and does not solve.

Disclosure of Invention

The invention provides asphalt paving equipment for road engineering pavements, which aims to solve the problem of uneven thickness of the existing asphalt.

The invention relates to road engineering pavement asphalt paving equipment which adopts the following technical scheme:

an asphalt paving device for road engineering pavements comprises a machine body, a support, a spiral feeding device and a leveling device. The support is connected to the rear side of the machine body, the spiral feeding device extends in the left-right direction, the spiral feeding device is installed on the support and located behind the machine body, and asphalt flows down from the machine body and is distributed on a road by the spiral feeding device. The leveling device is installed on the support and is located behind the spiral feeding device. The leveling device comprises a carrier roller rod, a sleeve, a switching device, a conveying belt and a shifting rod. The sleeve is rotatably mounted on the outer periphery of the idler rod. The conveyer belt rotates to be installed in telescopic surface and extends along left and right direction, dials the flat device and sets up in the surface of conveyer belt. Spiral material feeding unit rotates and drives the carrier roller pole and rotate, and switching device makes sleeve and carrier roller pole cooperation when being configured into to be touched by bellied pitch to make the carrier roller pole drive the sleeve and rotate, the sleeve conveying drives the conveyer belt and rotates, and the driving lever on the conveyer belt is dialled bellied pitch and is leveled.

Further, the leveling device further comprises a sliding barrel and a matching assembly. The sliding barrel is slidably arranged in the sleeve along the front-back direction, and the sliding barrel can drive the sleeve to rotate when rotating. The cooperation subassembly includes first cooperation piece and second cooperation piece, and first cooperation piece has a plurality ofly, and every first cooperation piece sets up on the inside wall of slide cartridge, and extends along the fore-and-aft direction, and the second cooperation piece sets up on the rear end periphery wall of bearing roller pole, and the circumferential direction equipartition of bearing roller pole is followed to first cooperation piece and second cooperation piece. The switch device enables the first matching block to move forwards to be inserted between two adjacent second matching blocks when being touched by the raised asphalt.

Further, the leveling device further comprises a rear shell, a threaded rod, a one-way plate and a torsion spring. The rear shell is fixed on the support, the rear end of the sleeve is rotatably mounted on the rear shell, and the rear end of the carrier roller rod is located in a cavity formed by the sleeve and the rear shell. The threaded rod extends along the front-back direction, the front end of the threaded rod is rotatably installed at the rear end of the roller rod, and the rear end of the threaded rod is installed at the center of the rear shell. The one-way board has a plurality ofly, distributes along the circumferential direction of threaded rod. The outer end of each one-way plate is hinged to the inner side wall of the sliding barrel and located at the rear end of the first matching block, so that the first matching block prevents the inner end of the one-way plate from inclining forwards, and the torsion spring is installed between the one-way plate and the sliding barrel to enable the inner end of the one-way plate to rotate forwards. One side of the one-way plate facing the threaded rod is provided with teeth, the teeth are meshed with threads on the threaded rod, so that after the first matching block is inserted between the two adjacent second matching blocks, the one-way plate rotates along with the rotation of the sliding barrel, under the meshing effect of the teeth on the one-way plate and the threads on the threaded rod, the inner end of the one-way plate moves backwards along the threads, the sliding barrel connected to the one-way plate then moves backwards, and the sliding barrel and the conveyor belt stop rotating until the sliding barrel is separated from the carrier roller rod.

Further, the switch device comprises a first connecting rod and a second connecting rod, a ring groove is formed in the rear end of the sliding cylinder in the circumferential direction, the first connecting rod is rotatably installed on the rear shell, the lower end of the first connecting rod extends out of the rear shell, the upper rear end of the second connecting rod is hinged to the upper end of the first connecting rod, and the lower front end of the second connecting rod is slidably installed in the ring groove of the sliding cylinder.

Furthermore, the leveling device further comprises a plurality of worms and worm wheels, the worms are mounted on a rotating shaft of the spiral feeding device at intervals, and the axes of the worm wheels extend in the front-back direction and are mounted at the front ends of the carrier roller rods and meshed with the worms.

Further, be provided with a plurality of draw slips on the telescopic inside wall, the draw slip extends along the fore-and-aft direction, is provided with a plurality of slides on the lateral wall of slide cartridge, and the draw slip slides in the slide, and the front end of draw slip still is provided with the spacing ring, and the spacing ring rigid coupling just is located the outside of bearing roller pole on telescopic perisporium.

Furthermore, a limiting ring, a stop ring, a counter bore screw and a bolt group are further arranged at the connecting position of the sleeve and the rear shell, the limiting ring is fixedly connected with the rear shell through the bolt group, the stop ring is slidably arranged in the limiting ring, and the sleeve is fixedly connected with the stop ring through the counter bore screw.

Further, spiral material feeding unit includes axis of rotation and a plurality of helical blade, a plurality of helical blade set up in the periphery of axis of rotation, and a plurality of helical blade set up about the central plane symmetry of perpendicular to axis of rotation, and the bearing roller pole, the sleeve, switching device are a plurality ofly, set gradually along the left right direction, left worm anticlockwise rotation when spiral material feeding unit rotates the left bearing roller pole of drive central plane and rotates, the worm clockwise rotation on right side when spiral material feeding unit rotates the bearing roller pole that drives the central plane right side and rotates.

Further, still include the roller, the roller is installed in the support and is set up in the rear of dialling the flat device.

Further, the lower end of the first connecting rod is provided with a balancing weight, so that the first connecting rod is in a vertical state.

The invention has the beneficial effects that: the invention adds the switch device, the conveyor belt and the deflector rod, can automatically detect the asphalt higher than the conventionally laid asphalt, and can automatically level the accumulated asphalt inwards when the road engineering pavement asphalt paving equipment turns, thereby improving the pavement paving quality and reducing the labor consumption. The invention is realized by adopting a pure mechanical structure, and is more suitable for severe working environments such as high temperature, vibration and the like compared with the traditional methods of arranging a travel switch, a sensor and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a top view of an embodiment of a road construction pavement asphalt paving apparatus of the present invention;

FIG. 2 is a partial top view of an embodiment of a road construction pavement asphalt paving apparatus of the present invention;

FIG. 3 is a partial cross-sectional view of a leveling device of an embodiment of a road construction pavement asphalt paving apparatus of the present invention;

FIG. 4 is a cross-sectional view of the working condition of a leveling device of an embodiment of the road construction pavement asphalt paving apparatus of the present invention;

FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 3;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 7 is a schematic view of a skid of an embodiment of a road construction pavement asphalt paving apparatus of the present invention;

FIG. 8 is a partial schematic view of a skid for an embodiment of a road construction pavement asphalt paving apparatus of the present invention.

In the figure: 1. a body; 2. a support; 3. rolling a roller; 4. a rotating shaft; 41. a helical blade; 51. a worm; 52. a carrier roller rod; 53. a conveyor belt; 54. a deflector rod; 55. a worm gear; 56. a sleeve; 561. a limiting ring; 562. a slide bar; 563. a slideway; 57. a slide cylinder; 571. a ring groove; 58. a rear housing; 581. a thread groove; 582. a threaded rod; 583. a first link; 584. a second link; 585. a first mating block; 586. a second mating block; 587. a bearing; 588. connecting blocks; 59. a one-way plate; 591. a torsion spring; 592. a hinge joint; 60. a limiting ring; 61. a snap ring; 62. a bolt group; 63. a countersunk screw.

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.

An embodiment of the road engineering pavement asphalt paving apparatus of the present invention, as shown in figures 1 to 8,

a road engineering pavement asphalt paving device comprises a machine body 1, a support 2, a spiral feeding device and a leveling device. The bracket 2 is attached to the rear side of the body 1. The spiral feeding device extends along the left-right direction, the spiral feeding device is arranged on the support 2, the spiral feeding device is positioned behind the machine body 1, and asphalt flows down from the machine body 1 and is distributed on roads by the spiral feeding device. The leveling device is mounted on the bracket 2 and located behind the spiral feeding device, and comprises a worm 51, a worm wheel 55, a carrier roller rod 52, a sleeve 56, a rear shell 58, a sliding cylinder 57, a switching device, a matching component, a conveyor belt 53 and a deflector rod 54.

The worm 51 has a plurality of worms 51, the worms 51 are mounted on the rotating shaft 4 of the screw feeder at intervals, the idler rod 52 extends in the front-rear direction, is located behind the worm 51, and is rotatably mounted on the bracket 2, and the axis of the worm wheel 55 extends in the front-rear direction and is mounted at the front end of the idler rod 52, and meshes with the worm 51. The front end of the sleeve 56 is rotatably mounted to the outer periphery of the idler lever 52. The rear shell 58 is fixed to the bracket 2, the rear end of the sleeve 56 is rotatably mounted to the rear shell 58, and the rear end of the idler rod 52 is located within the cavity formed by the sleeve 56 and the rear shell 58.

The slide cylinder 57 is slidably installed in the sleeve 56 in the front-rear direction, specifically, a plurality of slide bars 562 are provided on the inner side wall of the sleeve 56, the slide bars 562 extend in the front-rear direction, a plurality of slide ways 563 are provided on the outer side wall of the slide cylinder 57, and the slide bars 562 slide in the slide ways 563.

The cooperation subassembly includes first cooperation piece 585 and second cooperation piece 586, and first cooperation piece 585 is a plurality of, and every first cooperation piece 585 sets up on the inside wall of slide cartridge 57, and extends along the fore-and-aft direction, and second cooperation piece 586 sets up on the rear end periphery wall of bearing roller pole 52, and first cooperation piece 585 and second cooperation piece 586 are along the circumferential direction equipartition of bearing roller pole 52.

The switch device is installed at the bottom of the rear case 58, and is configured to urge the sliding cylinder 57 to move forward under the blocking action of the asphalt when being blocked by the raised asphalt, so that the first fitting block 585 is inserted between two adjacent second fitting blocks 586, and the rotating shaft 4 of the screw feeder drives the sleeve 56 to rotate. For example, the switch device includes a first link 583 and a second link 584, the first link 583 is rotatably mounted to the rear case 58, the lower end of the first link 584 extends out of the rear case 58, the rear upper end of the second link 584 is hinged to the upper end of the first link 583, the front lower end of the second link 584 is slidably mounted to the sliding cylinder 57 along the circumferential direction of the sliding cylinder 57, specifically, the rear end of the sliding cylinder 57 is provided with a ring groove 571, and the front lower end of the second link 584 is snapped into the ring groove 571 to slide in the ring groove 571.

The belt 53 is rotatably mounted on the outer surface of a plurality of sleeves 56, and each of the levers 54 is disposed on the outer surface of the belt 53, and each of the levers 54 is perpendicular to the belt 53. Further, there are plural sets of the shift levers 54, which are arranged in order in the circumferential direction of the conveyor belt 53, and plural sets of the shift levers 54, which are arranged in order in the width direction of the conveyor belt 53,

when pitch touches first connecting rod 583, because the paver moves forward, and then promote first connecting rod 583 and move backward, and then make second connecting rod 584 promote smooth cylinder 57 and move forward, when first cooperation piece 585 inserts between two adjacent second cooperation pieces 586, bearing roller rod 52 can drive smooth cylinder 57 and rotate, and then drive sleeve 56 and rotate, and sleeve 56 rotates and drives conveyer belt 53 and rotate, and driving lever 54 on the conveyer belt 53 is with the pitch of rising to dial.

In this embodiment, the leveling device further includes a threaded rod 582, a one-way plate 59, and a torsion spring 591, where the threaded rod 582 extends in the front-back direction, the front end of the threaded rod 582 is rotatably installed at the rear end of the idler rod 52, the rear end of the threaded rod 582 is fixedly connected to the center of the rear shell 58, specifically, the rear end of the idler rod 52 is provided with a bearing 587, the front end of the threaded rod 582 is provided with a connecting block 588, the threaded rod 582 is rotatably installed at the inner ring of the bearing 587 through the connecting block 588, the center position of the front wall of the rear shell 58 is provided with a threaded groove 581, and the threaded rod 582 is screwed in the threaded groove 581. The check plates 59 are provided in plural numbers, which are distributed along a circumferential direction of the threaded rod 582, and each check plate 59 has an outer end hinged to an inner side wall of the slide cylinder 57 and located at a rear end of the first fitting block 585 such that the first fitting block 585 blocks the inner end of the check plate 59 from tilting forward, and a torsion spring 591 is installed between the check plate 59 and the slide cylinder 57 to urge the inner end of the check plate 59 to rotate forward, and in particular, a plurality of hinges 592 are provided along a circumferential direction of an inner side wall of the slide cylinder 57, and the check plate 59 is hinged to the hinges 592. The one-way plate 59 is provided with teeth on the side facing the threaded rod 582 that engage with threads on the threaded rod 582. When the sliding barrel 57 moves forwards, the outer end of the one-way plate 59 is driven to move forwards, the inner end of the one-way plate 59 is driven to move forwards, when the first matching block 585 is inserted between two adjacent second matching blocks 586, the one-way plate 59 is kept in a vertical state on the threaded rod 582 under the action of the torsion spring 591, the one-way plate 59 rotates along with the rotation of the sliding barrel 57, and because teeth on the one-way plate 59 are meshed with threads on the threaded rod 582, the inner end of the one-way plate 59 moves backwards along the threads until the sliding barrel 57 is separated from the carrier roller rod 52, and the sliding barrel 57 stops rotating.

In order to prevent the first engaging block 585 from being separated from the second engaging block 586 beyond the front of the second engaging block 586, a stopper ring 561 is further provided at the front end of the slider 562, and the stopper ring 561 is fixed to the peripheral wall of the sleeve 56 and located outside the carrier roller rod 52.

In this embodiment, a stop collar 60, a stop ring 61, a counter bore screw 63 and a bolt set 62 are further disposed at a position where the sleeve 56 and the rear housing 58 are connected, the stop collar 60 is fixedly connected with the rear housing 58 through the bolt set 62, the stop ring 61 is slidably mounted in the stop collar 60, and the sleeve 56 is fixedly connected with the stop collar 61 through the counter bore screw 63, so that the sleeve 56 and the rear housing 58 rotate relatively and are prevented from being separated from the rear housing 58.

In some embodiments of the present invention, the spiral feeding device includes a rotating shaft 4 and a plurality of spiral blades 41, the plurality of spiral blades 41 are disposed on the periphery of the rotating shaft 4, the plurality of spiral blades 41 are symmetrically disposed about a central plane perpendicular to the rotating shaft 4, and the plurality of idler rods 52, the plurality of sleeves 56, and the plurality of switching devices are sequentially disposed along the left-right direction, the spiral feeding device rotates to drive the idler rod 52 on the left side of the central plane to rotate while the worm 51 on the left side rotates counterclockwise, and the spiral feeding device rotates to drive the idler rod 52 on the right side of the central plane to rotate while the worm 51 on the right side rotates clockwise.

In this embodiment, road engineering road surface asphalt paving equipment still includes rolling roller 3, and rolling roller 3 installs in support 2 and sets up in the rear of dialling the flat device, rolls the pitch of having laid.

In this embodiment, first connecting rod 583 lower extreme is provided with the balancing weight to make first connecting rod 583 be vertical state, be convenient for detect bellied pitch better.

The working principle is as follows: in the initial state, the idler lever 52 is in an idle state by the rotating shaft 4, and the first link 583 is in a vertical state. When pitch paving equipment turns, the many outside pitch circumstances few of inboard pitch can appear, the many places of pitch are higher than the height of conventional laying, first connecting rod 583 can be touched to the high pitch of this department, because the paver removes, and then promote first connecting rod 583 rethread, make first connecting rod 583 promote smooth section of thick bamboo 57 forward movement, when first cooperation piece 585 inserts between two adjacent second cooperation pieces 586, bearing roller 52 can drive smooth section of thick bamboo 57 and rotate, smooth section of thick bamboo 57 drives sleeve 56 and rotates, sleeve 56 rotates and drives conveyer belt 53 and rotate, the pitch that inboard is high is dialled the level to the outside to driving lever 54 on the conveyer belt 53. During the rotation of the sliding barrel 57, the one-way plate 59 rotates along with the rotation of the sliding barrel 57, and because the teeth on the one-way plate 59 are engaged with the threads on the threaded rod 582, the inner end of the one-way plate 59 is displaced backward along the advance of the threads until the sliding barrel 57 is separated from the carrier roller rod 52, the sliding barrel 57 stops rotating, and at the moment, the raised asphalt is leveled out.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a road engineering road surface asphalt paving equipment, includes fuselage, support, its characterized in that: the device also comprises a spiral feeding device and a leveling device; the support is connected to the rear side of the machine body, the spiral feeding device extends in the left-right direction, the spiral feeding device is mounted on the support and located behind the machine body, and asphalt flows down from the machine body and is distributed on a road by the spiral feeding device; the leveling device is arranged on the bracket and is positioned behind the spiral feeding device; the leveling device comprises a carrier roller rod, a sleeve, a switching device, a conveying belt and a lifting rod; the sleeve is rotatably arranged on the periphery of the roller rod; the conveying belt is rotatably arranged on the outer surface of the sleeve and extends along the left and right directions, and the leveling device is arranged on the outer surface of the conveying belt; spiral material feeding unit rotates and drives the carrier roller pole and rotate, and switching device makes sleeve and carrier roller pole cooperation when being configured into to be touched by bellied pitch to make the carrier roller pole drive the sleeve and rotate, the sleeve conveying drives the conveyer belt and rotates, and the driving lever on the conveyer belt is dialled bellied pitch and is leveled.

2. The road engineering pavement asphalt paving equipment as claimed in claim 1, characterized in that: the leveling device also comprises a sliding cylinder and a matching component; the sliding cylinder is slidably arranged in the sleeve along the front-back direction, and the sliding cylinder can drive the sleeve to rotate when rotating; the matching assembly comprises a plurality of first matching blocks and a plurality of second matching blocks, each first matching block is arranged on the inner side wall of the sliding cylinder and extends along the front-back direction, the second matching blocks are arranged on the outer peripheral wall of the rear end of the carrier roller rod, and the first matching blocks and the second matching blocks are uniformly distributed along the circumferential direction of the carrier roller rod; the switch device enables the first matching block to move forwards to be inserted between two adjacent second matching blocks when being touched by the raised asphalt.

3. The road engineering pavement asphalt paving equipment as claimed in claim 2, characterized in that: the leveling device also comprises a rear shell, a threaded rod, a one-way plate and a torsion spring; the rear shell is fixed on the support, the rear end of the sleeve is rotatably arranged on the rear shell, and the rear end of the carrier roller rod is positioned in a cavity formed by the sleeve and the rear shell; the threaded rod extends in the front-back direction, the front end of the threaded rod is rotatably arranged at the rear end of the roller rod, and the rear end of the threaded rod is arranged in the center of the rear shell; the plurality of one-way plates are distributed along the circumferential direction of the threaded rod; the outer end of each one-way plate is hinged to the inner side wall of the sliding cylinder and is positioned at the rear end of the first matching block, so that the first matching block prevents the inner end of the one-way plate from inclining forwards, and the torsion spring is arranged between the one-way plate and the sliding cylinder to enable the inner end of the one-way plate to rotate forwards; one side of the one-way plate facing the threaded rod is provided with teeth, the teeth are meshed with threads on the threaded rod, so that after the first matching block is inserted between the two adjacent second matching blocks, the one-way plate rotates along with the rotation of the sliding barrel, under the meshing effect of the teeth on the one-way plate and the threads on the threaded rod, the inner end of the one-way plate moves backwards along the threads, the sliding barrel connected to the one-way plate then moves backwards, and the sliding barrel and the conveyor belt stop rotating until the sliding barrel is separated from the carrier roller rod.

4. The road engineering pavement asphalt paving equipment as claimed in claim 1, characterized in that: the switch device comprises a first connecting rod and a second connecting rod, a ring groove is formed in the rear end of the sliding cylinder in the circumferential direction, the first connecting rod is rotatably installed on the rear shell, the lower end of the first connecting rod extends out of the rear shell, the upper rear end of the second connecting rod is hinged to the upper end of the first connecting rod, and the lower front end of the second connecting rod is slidably installed in the ring groove of the sliding cylinder.

5. The road engineering pavement asphalt paving equipment as claimed in claim 1, characterized in that: the leveling device further comprises a plurality of worms and worm wheels, the worms are mounted on a rotating shaft of the spiral feeding device at intervals, and the axes of the worm wheels extend in the front-back direction and are mounted at the front ends of the carrier roller rods and meshed with the worms.

6. The road engineering pavement asphalt paving equipment as claimed in claim 2, characterized in that: the telescopic inside wall is provided with a plurality of draw bars, and the draw bar extends along the fore-and-aft direction, is provided with a plurality of slides on the lateral wall of slide cartridge, and the draw bar slides in the slide, and the front end of draw bar still is provided with the spacing ring, and the spacing ring rigid coupling just is located the outside of bearing roller pole on telescopic perisporium.

7. The road engineering pavement asphalt paving equipment as claimed in claim 3, characterized in that: the connecting position of the sleeve and the rear shell is also provided with a limiting ring, a stop ring, a counter bore screw and a bolt group, the limiting ring is fixedly connected with the rear shell through the bolt group, the stop ring is slidably arranged in the limiting ring, and the sleeve is fixedly connected with the stop ring through the counter bore screw.

8. The road engineering pavement asphalt paving equipment as claimed in claim 1, characterized in that: spiral material feeding unit includes axis of rotation and a plurality of helical blade, a plurality of helical blade set up in the periphery of axis of rotation, and a plurality of helical blade set up about the central plane symmetry of perpendicular to axis of rotation, and hold in the palm the roller pole, the sleeve, switching device is a plurality ofly, set gradually along the left right direction, left worm counter-clockwise turning when spiral material feeding unit rotates the left roller pole that holds in the palm of drive central plane and rotates, the worm clockwise turning on right side when spiral material feeding unit rotates the roller pole that drives the central plane right side and rotates.

9. The road engineering pavement asphalt paving equipment as claimed in claim 1, characterized in that: still include the roller that rolls, roll the roller and install in the support and set up in the rear of dialling the paper-back edition and putting.

10. The road engineering pavement asphalt paving equipment as claimed in claim 7, characterized in that: the lower end of the first connecting rod is provided with a balancing weight so that the first connecting rod is in a vertical state.