CN201137031Y

CN201137031Y - Asphalt concrete spreader spiral distribution device

Info

Publication number: CN201137031Y
Application number: CNU2007200655812U
Authority: CN
Inventors: 李自光; 何志勇; 游小平; 邱文东
Original assignee: Changsha University of Science and Technology
Current assignee: Changsha University of Science and Technology
Priority date: 2007-12-27
Filing date: 2007-12-27
Publication date: 2008-10-22
Anticipated expiration: 2017-12-27

Abstract

The utility model discloses a screw-type spreader of an asphalt concrete paver. Variable-pitch helical blades (2) are installed on a spiral shaft (3), the variable-pitch helical blades on the spiral shaft (3) have smaller thread pitch on the outer side and larger thread pitch on the inner side, and two edges of a driving mechanism near the spiral shaft (3) are equipped with reverse spiral blades (4). Mixture can be remixed by using the screw-type spreader, a problem of aggregate segregation in the process of pavement of asphalt mixture can be solved, flatness and smoothness of the road pavement are increased, pavement quality of asphalt roads is increased, and service life of the roads is prolonged.

Description

A kind of bituminous concrete paver screw distribution device

Technical field

The utility model relates to a kind of bituminous concrete paver, particularly relates to a kind of screw distribution device of bituminous concrete paver.

Background technology

Asphalt concrete pavement has surfacing, no seam, driving is comfortable, wear-resisting, vibration is little, noise is low, the construction period is short, simple maintenance, be suitable for advantage such as stage construction, thereby obtains application more and more widely.But the aggregate segregation problem that produces in construction process of asphalt pavement can not be controlled effectively, cause road surface water destruct, planeness to reduce, shorten application life, therefore caused the extensive concern of domestic and international vast design and construction department, and a lot of effort have been done from construction technology and scrap build aspect, wherein effective method is to add asphalt mixture transfer vehicle in work progress, after transfer car(buggy) stirs compound, flow to paver more again, guaranteed the quality that paver paved.But this job practices has increased a construction equipment, has improved the construction cost of unit in charge of construction, can't accept for vast unit in charge of construction at present.

The utility model content

Technical problem to be solved in the utility model is the deficiency that exists at employed transfer car(buggy) in the present asphalt pavement construction, provide a kind of compound that can make in paving process, to be stirred again, reduce aggregate segregation, to solve the aggregate problem of non-uniform that occurs in the bituminous mixture laying process, improve the spreading quality of flexible pavement, prolong the road bituminous concrete paver screw distribution device in application life.

In order to solve the problems of the technologies described above, the bituminous concrete paver screw distribution device that the utility model provides, comprise helical axis and driving mechanism thereof, the variable-pitch screw blade is housed on described helical axis, less, the inboard pitch of the outside pitch of described variable-pitch screw blade on described helical axis is bigger, and the reverse acting spiral blade is equipped with on the both sides near described driving mechanism on described helical axis.

Adopt the bituminous concrete paver screw distribution device of technique scheme, during construction, the variable-pitch screw blade is buried in compound, the helical axis of drive mechanism the right and left symmetry drives the variable-pitch screw blade rotation, compound is transported to the both sides of the paving concrete pavement of wanting from the centre, the compound of previous stage helical feed is more than the back one-level, the amount of its minimizing just in time is the amount of the compound on the road surface of paving, then replenish if any deficiency, can prevent that like this coarse aggregate from producing aggregate segregation in the interlobate excessive roll of helical by top material.The reverse acting spiral blade that is contained in the driving mechanism both sides can solve the middle coarse aggregate that occurs in the paving process too much and the segregation band problem that forms.This structure and permission paver are thicker and wideer than the road surface that common paver paves.

As known from the above, the utility model is a kind of variable-pitch screw distributing device structure that has the reverse acting spiral blade on the paver, solved the aggregate segregation problem in the bituminous mixture laying process, planarization, the slickness of institute's paving concrete pavement are significantly improved, improve the spreading quality of flexible pavement, prolong road application life.

Description of drawings

Accompanying drawing is the utility model structural representation.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to accompanying drawing, helical axis 3 is in transmission connection with driving mechanism 5 and is supported by bracing frame 1, variable-pitch screw blade 2 is housed on helical axis 3, less, the inboard pitch of the outside pitch of variable-pitch screw blade 2 on helical axis 3 is bigger, and reverse acting spiral blade 4 is equipped with on the both sides near driving mechanism 5 on helical axis 3.

Referring to accompanying drawing, the utility model is mainly used on the bituminous concrete paver of constructing that paves of high-grade and asphalt pavement of highway, and the outside pitch of variable-pitch screw blade 2 on helical axis 3 is less, and the inboard is bigger, and promptly previous stage pitch is greater than the back one-level.During construction, variable-pitch screw blade 2 is buried in compound, the helical axis 3 that driving mechanism 5 drives the right and left symmetry drives 2 rotations of variable-pitch screw blade, compound is transported to the both sides of the paving concrete pavement of wanting from the centre, the compound of previous stage helical feed is more than the back one-level, the amount of its minimizing just in time is the amount of the compound on the road surface of paving, and is then replenished by top material if any deficiency, can prevent that like this coarse aggregate from producing aggregate segregation in the interlobate excessive roll of helical.The reverse acting spiral blade 4 that is contained in driving mechanism 5 both sides can solve the middle coarse aggregate that occurs in the paving process too much and the segregation band problem that forms.This structure and permission paver are thicker and wideer than the road surface that common paver paves.

Claims

A kind of bituminous concrete paver screw distribution device, comprise helical axis (3) and driving mechanism (5) thereof, it is characterized in that: variable-pitch screw blade (2) is housed on described helical axis (3), less, the inboard pitch of the outside pitch of described variable-pitch screw blade (2) on described helical axis (3) is bigger, goes up near the both sides of described driving mechanism (5) at described helical axis (3) reverse acting spiral blade (4) is housed.