CN-122013643-A - Step planing and milling device and planing and milling machine for pavement engineering

CN122013643ACN 122013643 ACN122013643 ACN 122013643ACN-122013643-A

Abstract

The invention provides a step planing and milling device and a planing and milling machine for pavement engineering, which belong to the field of pavement planing and milling and are used for solving the problems that a planing and milling machine cannot plane and mill side steps at joints of new and old roads, so that the joint bonding quality is poor and the joint bonding quality is easy to damage; through the cooperation of the transverse adjusting unit and the swing executing unit, the position and the angle of the lateral planing and milling head in the horizontal direction (transverse direction) and the vertical direction (depth) can be accurately controlled, so that the lateral planing and milling head can stably and regularly mill a step structure on the side surface of an old road, and the problem that the traditional planing and milling machine can only mill an integral plane and cannot finish high-quality joint treatment under special working conditions of half-width traffic, connection of new roads and old roads and the like is solved.

Inventors

JIANG HAIDONG
REN ZHIYUAN
HE YONG
JIANG HE
WEI TONG
LIU SHUHUA
Guo Jiongbin
SHI YANGLIN
HUANG JINGYUAN
CHEN DAOJU
LI HONGBO

Assignees

云南交投集团公路建设有限公司
云南交投公建隧道工程有限公司

Dates

Publication Date: 20260512
Application Date: 20260318

Claims (10)

1. The step planing and milling device for the pavement engineering is characterized by comprising a mounting base, a transverse adjusting unit, a swinging executing unit, a lateral planing and milling head and a spraying unit; the mounting base is fixed on one side wall of the planer body, which is parallel to the advancing direction; The transverse adjusting unit comprises a sliding seat and a transverse driving mechanism, the sliding seat is slidably arranged on the mounting base, and the transverse driving mechanism is used for driving the sliding seat to reciprocate along a horizontal direction perpendicular to the advancing direction of the planing and milling machine so as to realize transverse positioning of the lateral planing and milling head in a horizontal plane; The swing executing unit comprises a mechanical arm and a swing driving mechanism, one end of the mechanical arm is hinged with the sliding seat, and the swing driving mechanism is used for driving the mechanical arm to swing around a hinge shaft of the mechanical arm in a vertical plane; The lateral milling head comprises a milling shell, a milling roller and a rotary driving mechanism, wherein the milling shell is arranged at the free end of the mechanical arm, which is far away from the sliding seat; The spraying unit is used for spraying water into the planing and milling shell.
2. The step planing and milling device for road surface engineering according to claim 1, wherein the transverse driving mechanism comprises a transverse hydraulic driving piece and at least one transverse guiding piece, and the mounting base is of a U-shaped structure with an accommodating space; The two ends of the transverse guide piece are respectively fixed on two opposite side walls of the mounting base and transversely penetrate through the sliding seat, and the sliding seat and the transverse guide piece form sliding fit; the fixed end of the transverse hydraulic driving piece is arranged on the mounting base, the movable end of the transverse hydraulic driving piece stretches into the accommodating space and is connected with the sliding seat, and the transverse hydraulic driving piece is used for driving the sliding seat to axially move along the transverse guiding piece.
3. The step planing and milling device for pavement engineering according to claim 1, wherein the swing driving mechanism is a swing hydraulic driving piece, a fixed end of the swing hydraulic driving piece is hinged with the sliding seat, an output end of the swing hydraulic driving piece is hinged with the middle part or the free end of the mechanical arm, and the swing hydraulic driving piece is used for driving the mechanical arm to swing around a hinge shaft of the mechanical arm in a vertical plane.
4. The step planing and milling device for road surface engineering according to claim 1, wherein the rotary driving mechanism comprises a rotary hydraulic driving piece and a speed reducer; The fixed end of the rotary hydraulic driving piece is connected with the free end of the mechanical arm, the output shaft of the rotary hydraulic driving piece is in transmission connection with the input end of the speed reducer, and the output end of the speed reducer is fixedly connected with the rotating shaft of the planing and milling roller and used for driving the planing and milling roller to rotate.
5. The step planing and milling device for road engineering according to any one of claims 1 to 4, wherein the spraying unit comprises a water supply pipeline, an opening and closing assembly, a first spray head group and a second spray head group, wherein the opening and closing assembly is arranged on the outer side surface of the planing and milling shell and is used for connecting the opening and closing assembly and an external water source, the opening and closing assembly is connected with the first spray head group and the second spray head group through pipelines, the opening and closing assembly is also in transmission connection with a rotating shaft of the planing and milling roller, and the first spray head group and the second spray head group are arranged on the planing and milling shell, and the water outlet ends of the first spray head group and the second spray head group face into the planing and milling shell; The opening and closing assembly is configured to communicate the first spray head group with a water supply line when the milling drum rotates to a first phase, and to communicate the second spray head group with the water supply line when the milling drum rotates to a second phase.
6. The step milling device for road engineering according to claim 5, wherein a plurality of first milling tooth groups and a plurality of second milling tooth groups are alternately arranged in the circumferential direction of the milling roller; The first milling teeth group comprises a plurality of first milling teeth which are arranged at intervals along the axial direction of the milling roller, and the second milling teeth group comprises a plurality of second milling teeth which are arranged at intervals along the axial direction of the milling roller; The radius of the cylindrical surface where the cutting end of the first milling tooth is located is larger than the radius of the cylindrical surface where the cutting end of the second milling tooth is located; the spray nozzle water outlets of the second spray nozzle group are respectively aligned with the first planing and milling teeth of the first planing and milling teeth group; the driving connection relation between the opening and closing assembly and the planing and milling roller is specifically configured that the first spray head group is started when the planing and milling roller rotates to the first working phase for enabling the second planing and milling tooth group to contact and cut the road surface, and the second spray head group is started when the planing and milling roller rotates to the second working phase for enabling the first planing and milling tooth group to contact and cut the road surface.
7. The step planing and milling device for road surface engineering according to claim 6, wherein the opening and closing assembly comprises a cam, a trigger piece, a reset piece, a guide seat, a first waterway switch and a second waterway switch; The cam is coaxially and fixedly sleeved on the rotating shaft of the planing and milling roller, and a plurality of concave parts and a plurality of raised parts are alternately arranged on the cam along the circumferential direction, wherein the contour position of the concave parts corresponds to the first working phase of the planing and milling roller, and the contour position of the raised parts corresponds to the second working phase; The trigger piece is arranged on the guide seat in a penetrating manner along the axial direction of the trigger piece in a sliding manner, and one end of the trigger piece is kept in contact with the outer contour of the cam; the reset piece is connected with the trigger piece and is used for providing elastic pretightening force for the trigger piece to always press the trigger piece to the circumference of the cam; The water inlet of the second waterway switch is communicated with the water supply pipeline, and the water outlet of the second waterway switch is communicated with the pipeline leading to the second nozzle group; The trigger is connected with the first waterway switch and the second waterway switch, and is configured to trigger and open the first waterway switch when the trigger rotates along with the cam and is in a first working phase corresponding to the concave part, and the second waterway switch is in a closed state, and trigger and open the second waterway switch when the trigger rotates along with the cam and is in a second working phase corresponding to the bulge, and the first waterway switch is in a closed state.
8. The step milling device for road engineering according to claim 7, wherein the trigger piece is connected with the first waterway switch and the second waterway switch through a crank link mechanism.
9. The step milling device for road engineering according to claim 7, wherein the first nozzle group and the second nozzle group are located at the front side of the advancing direction of the milling drum.
10. A planing and milling machine comprising a machine body and a step planing and milling device for road surface engineering according to any one of claims 1 to 9, wherein a mounting base of the step planing and milling device for road surface engineering is provided on a side wall of the machine body parallel to the advancing direction.

Description

Step planing and milling device and planing and milling machine for pavement engineering Technical Field The invention belongs to the field of road surface planing and milling, and particularly relates to a step planing and milling device and a planing and milling machine for road surface engineering. Background Milling machines, also known as road mills, generally include a milling system. The milling system includes a milling drum having a plurality of teeth. The planing and milling roller obtains power from the engine through hydraulic structure and the like to perform planing and milling operation on the surface of the road by using the planing and milling roller. The surface of the road is thus torn by the insertion on the milling drum due to the rotary movement of the milling drum against the surface. The rotation of the planer drum may also deposit material from the fractured surface on the primary conveyor. The main conveyor transfers the material from the primary conveyor to a secondary conveyor, which in turn may transport the material to a nearby haulage vehicle. However, due to the limitation of the structure and the working mode, the traditional planing and milling machine can only carry out integral plane planing and milling on the road, and can not finish the fine joint treatment under the special working conditions of half-width traffic of the road, connection of new and old roads and the like. Especially at the seam of new and old roads, the existing equipment is difficult to plane and mill a regular and reliable step structure on the side surface of the old road, so that the joint area has insufficient bonding strength and is easy to generate stress concentration, the whole flatness and long-term service performance of the road are further influenced, and the road is a key bottleneck for restricting the road repair quality. Disclosure of Invention In view of the above-mentioned drawbacks of the prior art, the present invention is directed to a step planing and milling device and a planing and milling machine for road engineering, which are used for solving the problems that in the prior art, the planing and milling machine cannot perform side step planing and milling at the seam of a new road and an old road, so that the seam bonding quality is poor and the seam is easy to damage. To achieve the above and other related objects, the present invention provides a step milling device for road surface engineering, comprising a mounting base, a lateral adjustment unit, a swing execution unit, a lateral milling head and a spraying unit, wherein the mounting base is fixed on one side wall of a milling machine body parallel to the advancing direction, the lateral adjustment unit comprises a sliding seat and a lateral driving mechanism, the sliding seat is slidably mounted on the mounting base, the lateral driving mechanism is used for driving the sliding seat to reciprocate along the horizontal direction perpendicular to the advancing direction of the milling machine so as to realize the lateral positioning of the lateral milling head in the horizontal plane, the swing execution unit comprises a mechanical arm and a swing driving mechanism, one end of the mechanical arm is hinged with the sliding seat, the swing driving mechanism is used for driving the mechanical arm to swing in a vertical plane around a hinge shaft of the mechanical arm, the lateral milling head comprises a milling shell, a milling roller and a rotary driving mechanism, the milling shell is mounted on the free end of the mechanical arm away from the sliding seat, the milling roller is positioned in the milling shell and is rotatably connected with the milling shell, the rotary driving mechanism is used for driving the milling roller to rotate around the self axis, and the spraying unit is used for spraying water into the milling shell. The transverse driving mechanism comprises a transverse hydraulic driving piece and at least one transverse guide piece, wherein the installation base is of a U-shaped structure with an accommodating space, two ends of the transverse guide piece are respectively fixed on two opposite side walls of the installation base and transversely penetrate through the sliding seat, the sliding seat and the transverse guide piece form sliding fit, the fixed end of the transverse hydraulic driving piece is arranged on the installation base, the movable end of the transverse hydraulic driving piece extends into the accommodating space and is connected with the sliding seat, and the transverse hydraulic driving piece is used for driving the sliding seat to move along the axial direction of the transverse guide piece. Optionally, the swing driving mechanism is a swing hydraulic driving piece, the fixed end of the swing hydraulic driving piece is hinged with the sliding seat, the output end of the swing hydraulic driving piece is hinged with the middle part or the free end of the mechanical arm, and the swing hydra