Milling device and method for municipal road surface maintenance

Abstract

The invention relates to the field of pavement maintenance, in particular to a milling device for municipal pavement maintenance and a method thereof. After the road surface milling machine works for a certain time, the working efficiency of the milling machine is reduced due to the abrasion of a cutter in the use process, and the abraded cutter cannot effectively remove old materials on the road surface, so that the flatness and quality of the milled road surface cannot reach expected standards, and the subsequent repairing and laying work is influenced. Comprising a vehicle frame, the outer side of the vehicle frame is fixedly connected with a vehicle shell, a milling mechanism is arranged in the middle of the vehicle frame, a dust collection mechanism is arranged on one side of the milling mechanism, a walking mechanism is arranged on one side of the dust collection mechanism, and a steering mechanism is arranged on the other side of the milling mechanism. The milling mechanism is arranged, the pulling handle is shifted, locking between the pressing plate and the milling roller is relieved, the tool apron is pulled out of the T-shaped sliding groove of the milling roller, then the limiting handle is pulled, and locking of the tool bit by the limiting block can be relieved.

Description

Technical Field

[0001] The invention relates to the field of road surface maintenance, and in particular to a milling device and a method for municipal road surface maintenance. Background Art

[0002] When cracks, potholes, peeling and other damages appear on the road surface, if they are not repaired in time, a series of adverse consequences will occur. In order to ensure the safety, smoothness and long-term use of road traffic, the road surface must be inspected and repaired regularly. Through timely maintenance work, the damage to the road surface can be repaired and its original function and performance can be restored, thus ensuring the safety and efficiency of traffic.

[0003] The road milling machine is one of the main types of asphalt pavement maintenance and construction machinery, and is also the main equipment for asphalt concrete pavement maintenance and construction. In the prior art, after the road milling machine has been working for a certain period of time, the tool wears during use, which reduces the working efficiency of the milling machine. The worn tool cannot effectively remove the old material on the road surface, resulting in the road surface flatness and quality after milling failing to meet the expected standards, affecting the subsequent repair and paving work. Therefore, after a period of use, the milling machine needs to replace the milling tool according to the degree of wear of the milling tool. In the prior art, most milling tools are fixed on the milling roller with screws. Each replacement of the tool takes a long time, which will seriously affect the construction progress and extend the construction period. At the same time, the replacement steps are cumbersome, resulting in a long replacement and maintenance time and high replacement and maintenance costs; at the same time, when performing milling operations, it is easy to generate large smoke and dust, which will not only pollute the environment, but also affect the health of construction workers. Summary of the invention

[0004] (1) Technical issues to be resolved In order to overcome the shortcomings of complicated milling tool replacement steps, resulting in long replacement and maintenance time and high replacement and maintenance costs, the technical problem to be solved by the present invention is to provide a milling device and method for municipal road maintenance.

[0005] (2) Technical solution In order to solve the above technical problems, the present invention provides a milling device for municipal road maintenance, comprising a frame, a vehicle shell is fixedly connected to the outer side of the frame, a milling mechanism is arranged in the middle of the frame, a dust suction mechanism is arranged on one side of the milling mechanism, a walking mechanism is arranged on one side of the dust suction mechanism, and a steering mechanism is arranged on the other side of the milling mechanism, the milling mechanism comprises four electric telescopic rods, the electric telescopic rods are fixedly connected to the frame, the output ends of the electric telescopic rods are rotatably connected to a lifting seat via a rotating shaft, the lower side surface of the lifting seat is fixedly connected to a milling frame, the lower end of the milling frame is rotatably connected to a milling roller, a plurality of T-shaped slide grooves are provided on the arc-shaped outer side surface of the milling roller, a gear-shaped groove is provided on the side surface of the milling roller, and a gear-shaped groove is provided on the side surface of the milling roller. The surface is fixedly connected with four fixing bolts by threads, and a pressure plate is slidably connected to the outer side of the fixing bolt, and four arc-shaped slide grooves are opened on the side of the pressure plate, and the fixing bolts are slidably connected in the arc-shaped slide grooves, and the arc-shaped side of the pressure plate is opened with a T-shaped slide groove corresponding to the T-shaped slide groove of the milling roller, and the pressure plate is fixedly connected to two guide rails relative to the side of the milling roller, and the cross-section of the guide rail is L-shaped, and the side of the guide rail is opened with a T-shaped slide groove, and a locking block is slidably connected in the T-shaped slide groove, and a compression spring is fixedly connected between the locking block and the guide rail, and connecting rods are rotatably connected to the two sides of the locking block through a rotating shaft, and the other ends of the two connecting rods are rotatably connected to a pulling handle, and an elliptical through hole is opened on the side of the pressure plate, and the pulling handle is slidably connected in the elliptical through hole.

[0006] Preferably, the milling mechanism also includes a tool seat, which is slidably connected to the T-shaped slide groove of the milling roller, and a plurality of circular countersunk holes are provided on the side of the tool seat, and a cutter head is slidably connected in the circular countersunk hole. The side of the tool seat is provided with a square hole, and a limiting block is slidably connected in the square hole, and a return spring is fixedly connected between the limit block and the tool seat, and the limit block is slidably connected to the cutter head. A plurality of arc slide grooves are provided on the side of the limit block, and the diameter of the arc slide groove is consistent with the diameter of the cutter head. The other end of the tool seat is slidably connected to the limiting shaft, one end of the limiting shaft is fixedly connected to the limiting handle, and the other end of the limiting shaft is fixedly connected to the locking block, and an annular slide groove is provided on the outside of the limiting shaft and located inside the tool seat, and a limiting spring is fixedly connected in the annular slide groove and located between the locking block and the tool seat, and the locking block is slidably connected to the tool seat and the limit block.

[0007] Preferably, the milling mechanism also includes a milling motor, which is fixedly connected to the upper surface of the milling frame, and the output end of the milling motor is fixedly connected to a driving pulley, and the end of the milling roller passing through the milling frame is fixedly connected to a driven pulley, and a power belt is provided on the outer side of the driving pulley and the driven pulley.

[0008] Preferably, the dust suction mechanism includes an air collecting duct, which is fixedly connected to the frame, a square through hole is opened inside the air collecting duct, shutters are fixedly connected at both ends of the square through hole, two suction fans are fixedly connected inside the square through hole, two filter plates are slidably connected in the square through hole and located between the two suction fans, two filter elements are slidably connected in the square through hole and located on the outer sides of the two suction fans, an air collecting hood is fixedly connected to the lower surface of the air collecting duct, the air collecting hood is connected to the air collecting duct through the square hole, and the air collecting hood is fixedly connected to the frame.

[0009] Preferably, the dust suction mechanism also includes two collection boxes, which are slidably connected to the frame and the body, and the collection box is connected to the air collecting duct through a square hole. A circular hole is provided on the side of the collection box, and a locking column is slidably connected in the circular hole. A circular hole is provided on the side of the frame, and the locking column is slidably connected in the circular hole of the frame. A locking spring is fixedly connected between the locking column and the frame, a square through hole is provided in the middle of the locking column, and an unlocking column is slidably connected in the square through hole. A trapezoidal slide groove is provided in the middle of the unlocking column, and the unlocking column is slidably connected to the frame, and a locking handle is fixedly connected to the end of the unlocking column.

[0010] Preferably, the steering mechanism includes two linkage brackets, the linkage bracket is fixedly connected to the frame, the other end of the linkage bracket is rotatably connected to a linkage shaft, one end of the linkage shaft is fixedly connected to a steering wheel, the other end of the linkage shaft is fixedly connected to a linkage bevel gear, a steering bevel gear is arranged on the side of the linkage bevel gear, the linkage bevel gear is meshingly connected with the steering bevel gear, the lower side of the steering bevel gear is fixedly connected to a rotating disk via a rotating shaft, the outer side of the rotating disk is rotatably connected to a steering bracket, and the steering bracket is fixedly connected to the frame.

[0011] Preferably, the steering mechanism also includes a shock-absorbing plate, which is fixedly connected to the lower surface of the rotating disk, and the lower surface of the shock-absorbing plate is fixedly connected to two guide shafts, and another shock-absorbing plate is slidably connected to the outer side of the lower end of the guide shaft, and the lower surface of the other shock-absorbing plate is rotatably connected to two steering wheels via a rotating shaft, and a shock-absorbing spring is fixedly connected between the two shock-absorbing plates.

[0012] Preferably, the walking mechanism includes a walking motor, the walking motor is fixedly connected to the frame, the output end of the walking motor is fixedly connected to a driving gear, the lower side of the frame is rotatably connected to a walking shaft, both ends of the walking shaft are fixedly connected to walking wheels, the outer side of the walking shaft is fixedly connected to a pushing gear, and the driving gear is meshingly connected to the pushing gear.

[0013] Preferably, a battery compartment is fixedly connected to one end of the frame, a charging door is rotatably connected to the side of the body shell and at a position corresponding to the battery compartment via a rotating shaft, two maintenance doors are rotatably connected to both sides of the body shell via a rotating shaft, an operation panel is fixedly connected to one side of the body shell, a seat is fixedly connected to the upper surface of the battery compartment, and an electronic throttle module is fixedly connected to the upper surface of the air collecting duct.

[0014] Preferably, a method for using a milling device for municipal road maintenance comprises the following steps: S1. Open the charging door, place a fully charged battery in the battery compartment, connect the line and close the charging door, and the operator sits on the seat; S2, starting the milling mechanism through the operation panel to mill the road surface, first using the electric telescopic rod to adjust the height of the milling roller, and then starting the milling motor, the output end of the milling motor drives the milling roller to rotate, and the road surface is gradually milled and leveled under the action of the cutter head; S3, starting the dust suction mechanism through the operation panel, the suction fan sucks the dust generated during the milling process of the milling mechanism into the air collecting hood, the air containing dust is filtered by the filter plate and the filter element, and the dust falls into the collection box, the collection box can be removed by pulling the locking handle, and then the collected stones and dust are dumped at a designated location; S4, starting the walking mechanism through the operation panel, stepping on the electronic throttle module to start the walking motor, the output end of the walking motor drives the walking wheel to rotate, and the rotation of the walking wheel drives the entire milling device to move; S5, operating the milling device through the steering mechanism to perform reciprocating milling of the road surface, turning the steering wheel, the steering wheel drives the steering wheel to rotate, thereby driving the milling device to change direction, and reciprocating milling of the road surface, when the road surface is uneven, the steering wheel reciprocates up and down following the ups and downs of the ground, the damping spring is continuously compressed and stretched, so that the milling device as a whole operates smoothly; S6. When replacing the cutter head of the milling mechanism, open the maintenance door, push the pulling handle to both sides to release the lock between the pressure plate and the milling roller, rotate the pressure plate clockwise to pull the cutter holder out of the T-shaped slot of the milling roller, pull the limit handle and twist it 90 degrees to a horizontal position to release the lock of the cutter head by the limit block. After the cutter head is replaced, press the limit block back into the cutter holder and compress the reset spring, twist the limit handle 90 degrees to a vertical position and release it. The limit spring releases the pressure to push the locking block to contact the limit block, insert the cutter holder with the new cutter head installed back into the milling roller, push the pulling handle and push the pressure plate to reset. At this time, the cutter head of the milling mechanism is replaced.

[0015] (3) Beneficial effects 1. By setting the milling mechanism, turn the pull handle to release the lock between the pressure plate and the milling roller, pull the cutter seat out of the T-shaped slide groove of the milling roller, and then pull the limit handle to release the lock of the limit block on the cutter head, and remove the cutter head from the cutter seat. The overall modular design of the milling mechanism shortens the replacement and maintenance time and reduces the maintenance cost; 2. By setting up a dust suction mechanism, the suction fan sucks the stone fragments and dust milled by the milling mechanism into the air collecting hood. The dusty air is gradually filtered by the filter plate and filter element, so that the filtered dust falls into the collection box. The collection box can be removed by pulling the locking handle, and the collected dust can be dumped at the designated location, reducing the smoke and dust in the working environment and protecting the health of construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the structure of the milling mechanism of the present invention; Figure 4 It is a schematic diagram of the structure of the milling roller of the present invention; Figure 5 is a cross-sectional view of a pressing plate of the present invention; Figure 6 is a cross-sectional view of a knife holder of the present invention; Figure 7 It is a schematic diagram of the structure of the return spring of the present invention; Figure 8 It is a schematic diagram of the structure of the dust collection mechanism of the present invention; Fig. 9 It is a schematic diagram of the unlocking column structure of the present invention; Fig.10 It is a schematic diagram of the walking mechanism structure of the present invention.

[0017] The marks in the accompanying drawings are: 1-vehicle shell, 2-operation panel, 3-steering mechanism, 301-steering wheel, 302-linkage shaft, 303-linkage bracket, 304-linkage bevel gear, 305-steering bevel gear, 306-steering bracket, 307-rotating plate, 308-shock-absorbing plate, 309-shock-absorbing spring, 310-steering wheel, 311-guide shaft, 4-frame, 5-seat, 6-charging door, 7-travel mechanism, 701-travel motor, 702-drive gear, 703-push gear, 704-travel shaft, 705-travel wheel, 8-dust suction mechanism, 801-air collecting duct, 802-filter plate, 803-suction fan, 804-filter element, 805-louver, 806-collection box, 807-air collecting hood, 808-locking handle, 809-unlocking Column, 810-locking column, 811-locking spring, 9-maintenance door, 10-electronic throttle module, 11-battery compartment, 12-milling mechanism, 1201-electric telescopic rod, 1202-lifting seat, 1203-milling motor, 1204-driving pulley, 1205-power belt, 1206-milling frame, 1207-driven pulley, 1208-milling roller, 1209-pressure plate, 1210-fixing bolt, 1211-pull handle, 1212-connecting rod, 1213-locking block, 1214-compression spring, 1215-guide rail, 1216-knife seat, 1217-knife head, 1218-limiting block, 1219-limiting spring, 1220-limiting shaft, 1221-limiting handle, 1222-reset spring, 1223-locking block. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0019] A milling device for municipal road maintenance, such as Figure 1-Figure 5As shown, it includes a vehicle frame 4, the outer side of the vehicle frame 4 is fixedly connected with a vehicle shell 1, a milling mechanism 12 is arranged in the middle of the vehicle frame 4, by arranging the milling mechanism 12, the milling tool is modularized, the replacement and maintenance time of the milling tool is shortened, and the replacement and maintenance cost of the milling tool is reduced, a dust suction mechanism 8 is arranged on one side of the milling mechanism 12, by arranging the dust suction mechanism 8, the dust in the working environment is reduced, and the health of the construction workers is protected, a walking mechanism 7 is arranged on one side of the dust suction mechanism 8, by arranging the walking mechanism 7, the labor intensity of the construction workers is reduced, and the efficiency of road maintenance is improved, and a steering mechanism 3 is arranged on the other side of the milling mechanism 12, by arranging the steering mechanism 3, The device can be moved freely, and road maintenance operations can be carried out more flexibly and conveniently. The milling mechanism 12 includes four electric telescopic rods 1201, which are fixedly connected to the frame 4. The output end of the electric telescopic rod 1201 is rotatably connected to the lifting seat 1202 through a rotating shaft. The lower side of the lifting seat 1202 is fixedly connected to the milling frame 1206, and the lower end of the milling frame 1206 is rotatably connected to the milling roller 1208. The arc-shaped outer side of the milling roller 1208 is provided with a plurality of T-shaped slide grooves, and the T-shaped slide grooves are used to install the tool holder 1216. A gear-shaped groove is provided on one side of the milling roller 1208, and a plurality of locking blocks are provided on the circumference of the inner side of the gear-shaped groove. 1213 matches the slide groove, the side of the milling roller 1208 is fixedly connected with four fixing bolts 1210 by threads, the outer side of the fixing bolt 1210 is slidably connected with a pressure plate 1209, the side of the pressure plate 1209 is provided with four arc-shaped slide grooves, the fixing bolt 1210 is slidably connected in the arc-shaped slide groove, the arc-shaped side of the pressure plate 1209 is provided with a T-shaped slide groove corresponding to the T-shaped slide groove of the milling roller 1208, the pressure plate 1209 is fixedly connected with two guide rails 1215 relative to the side of the milling roller 1208, the cross-section of the guide rail 1215 is L-shaped, the side of the guide rail 1215 is provided with a T-shaped slide groove, and the T-shaped slide groove is slidably connected with a locking block 1213, which is locked A compression spring 1214 is fixedly connected between the block 1213 and the guide rail 1215, and connecting rods 1212 are rotatably connected to the two sides of the locking block 1213 through a rotating shaft. The other ends of the two connecting rods 1212 are rotatably connected to the pulling handles 1211. An elliptical through hole is opened on the side of the pressure plate 1209, and the pulling handles 1211 are slidably connected in the elliptical through hole. By pushing the two pulling handles 1211 outward, the two locking blocks 1213 are driven to move toward each other through the connecting rod 1212, so that the locking block 1213 is moved out of the gear-shaped groove of the milling roller 1208, which can release the restriction on the pressure plate 1209, so that the pressure plate 1209 can be rotated to a certain angle.

[0020] like Figure 6-Figure 7As shown, the milling mechanism 12 also includes a knife seat 1216, which is slidably connected to the T-shaped slide groove of the milling roller 1208. A plurality of circular countersunk holes are provided on the side of the knife seat 1216, and a knife head 1217 is slidably connected in the circular countersunk hole. A square hole is provided on the side of the knife seat 1216, and a limiting block 1218 is slidably connected in the square hole. A return spring 1222 is fixedly connected between the limiting block 1218 and the knife seat 1216. The limiting block 1218 is slidably connected to the knife head 1217. A plurality of arc-shaped slide grooves are provided on the side of the limiting block 1218, and the diameter of the arc-shaped slide grooves is the same as that of the knife head 1217. The diameters are consistent, and the cutter head 1217 is limited inside the cutter seat 1216 by the limit block 1218. The other end of the cutter seat 1216 is slidably connected to the limit shaft 1220, one end of the limit shaft 1220 is fixedly connected to the limit handle 1221, and the other end of the limit shaft 1220 is fixedly connected to the locking block 1223. An annular groove is provided on the outside of the limit shaft 1220 and inside the cutter seat 1216. A limit spring 1219 is fixedly connected inside the annular groove and between the locking block 1223 and the cutter seat 1216. The locking block 1223 is slidably connected to the cutter seat 1216 and the limit block 1218.

[0021] like Figure 3 As shown, the milling mechanism 12 also includes a milling motor 1203, which is fixedly connected to the upper surface of the milling frame 1206, and the output end of the milling motor 1203 is fixedly connected to a driving pulley 1204, and a milling roller 1208 passes through the end of the milling frame 1206 and is fixedly connected to a driven pulley 1207, and a power belt 1205 is provided on the outer side of the driving pulley 1204 and the driven pulley 1207.

[0022] like Figure 8-Figure 9As shown, the dust suction mechanism 8 includes an air collecting duct 801, which is fixedly connected to the frame 4, a square through hole is opened inside the air collecting duct 801, and shutters 805 are fixedly connected at both ends of the square through hole, and two suction fans 803 are fixedly connected inside the square through hole, and two filter plates 802 are slidably connected in the square through hole and between the two suction fans 803, and two filter elements 804 are slidably connected in the square through hole and on the outer side surfaces of the two suction fans 803, and an air collecting hood 807 is fixedly connected to the lower surface of the air collecting duct 801, and the air collecting hood 807 is connected to the air collecting duct 801 through a square hole, and the air collecting hood 807 is fixedly connected to the frame 4, and collection boxes 806 are slidably connected on both sides of the frame 4 and the shell 1, and a pulling handle is installed on the side of the collection box 806, and the collection box 806 is connected to the air collecting duct 801 through a square hole. There is a circular hole, in which a locking column 810 is slidably connected. A circular hole is provided on the side of the frame 4, and the locking column 810 is slidably connected in the circular hole of the frame 4. The locking column 810 is inserted into the circular hole of the collection box 806 to limit the collection box 806. A locking spring 811 is fixedly connected between the locking column 810 and the frame 4. A square through hole is provided in the middle of the locking column 810, and an unlocking column 809 is slidably connected in the square through hole. A trapezoidal slide groove is provided in the middle of the unlocking column 809. When the unlocking column 809 slides outward, the inclined surface of the trapezoidal slide groove of the unlocking column 809 can push the locking column 810 to slide out of the circular hole of the collection box 806, so that the locking column 810 releases the lock of the collection box 806, so that the collection box 806 can be drawn out of the frame 4. The unlocking column 809 is slidably connected to the frame 4, and the end of the unlocking column 809 is fixedly connected to the locking handle 808.

[0023] like Figure 2 As shown, the steering mechanism 3 includes two linkage brackets 303, the linkage bracket 303 is fixedly connected to the frame 4, the other end of the linkage bracket 303 is rotatably connected to the linkage shaft 302, one end of the linkage shaft 302 is fixedly connected to the steering wheel 301, the other end of the linkage shaft 302 is fixedly connected to the linkage bevel gear 304, the side of the linkage bevel gear 304 is provided with a steering bevel gear 305, the linkage bevel gear 304 is meshed and connected with the steering bevel gear 305, and the lower side of the steering bevel gear 305 is fixedly connected to A rotating disk 307 is provided, and a steering bracket 306 is rotatably connected to the outer side of the rotating disk 307. The steering bracket 306 is fixedly connected to the frame 4. A shock absorbing plate 308 is fixedly connected to the lower surface of the rotating disk 307. Two guide shafts 311 are fixedly connected to the lower surface of the shock absorbing plate 308. Another shock absorbing plate 308 is slidably connected to the outer side of the lower end of the guide shaft 311. The lower surface of the other shock absorbing plate 308 is rotatably connected to two steering wheels 310 via a rotating shaft. A shock absorbing spring 309 is fixedly connected between the two shock absorbing plates 308.

[0024] like Fig.10As shown, the walking mechanism 7 includes a walking motor 701, which is fixedly connected to the frame 4. The output end of the walking motor 701 is fixedly connected to a driving gear 702. The lower side of the frame 4 is rotatably connected to a walking shaft 704. Both ends of the walking shaft 704 are fixedly connected to walking wheels 705. The outer side of the walking shaft 704 is fixedly connected to a pushing gear 703. The driving gear 702 is meshingly connected with the pushing gear 703.

[0025] like Figure 1-Figure 2 As shown, one end of the vehicle frame 4 is fixedly connected to a battery compartment 11, and a battery is placed in the battery compartment 11. The entire device is driven by electricity to reduce pollution emissions and protect the environment around the road. A charging door 6 is rotatably connected to the side of the vehicle shell 1 and the corresponding position of the battery compartment 11 through a rotating shaft. Two maintenance doors 9 are rotatably connected to the two sides of the vehicle shell 1 through a rotating shaft. The maintenance door 9 on one side is convenient for repairing and replacing the power belt 1205 of the milling mechanism 12, and the maintenance door on the other side is convenient for repairing and replacing the cutter head of the milling mechanism 12. An operation panel 2 is fixedly connected to one side of the vehicle shell 1. By setting the operation panel 2 and setting relevant parameters of the device, it is convenient to start the device to mill the road surface. A seat 5 is fixedly connected to the upper surface of the battery compartment 11, and an electronic throttle module 10 is fixedly connected to the upper surface of the air collecting duct 801. By stepping on the electronic throttle module 10, the rotation speed of the travel motor 701 is controlled, thereby controlling the moving speed of the entire device.

[0026] Working principle: When the device is in use, open the charging door 6, place the fully charged battery in the battery compartment 11, connect the line and close the charging door 6, the operator sits on the seat 5, first starts the milling mechanism 12 through the operation panel 2 to mill the road surface, then starts the dust collection mechanism 8 through the operation panel 2 to collect the dust generated during the milling process, then starts the walking mechanism 7 through the operation panel 2, steps on the electronic throttle module 10, pushes the device to move, and operates the device through the steering mechanism 3 to mill the road surface back and forth. When the milling mechanism 12 has been working for a certain period of time, open the maintenance door 9 to replace the tool to ensure the milling quality of the road surface by the milling mechanism 12.

[0027] When the milling mechanism 12 is started to mill the road surface, the electric telescopic rod 1201 is started, and the output end of the electric telescopic rod 1201 drives the lifting seat 1202 to reciprocate up and down, and the lifting seat 1202 drives the milling frame 1206 to reciprocate up and down, and the milling frame 1206 reciprocates up and down to adjust the milling mechanism 12 to a suitable height, and the milling motor 1203 is started, and the output end of the milling motor 1203 drives the driving pulley 1204 to rotate. Under the action of the power belt 1205, the driving pulley 1204 rotates and drives the driven pulley 1207 to rotate. The driven pulley 1207 rotates and drives the milling roller 1208 to rotate, and the milling roller 1208 mills the road surface through the cutter head 1217 to make it flat.

[0028] The dust suction mechanism 8 is started to collect the dust from the milling, and the suction fan 803 is started. The suction fan 803 sucks the dust-containing gas milled by the milling mechanism 12 into the air collecting hood 807. The dust-containing gas enters the air collecting duct 801 through the air collecting hood 807. The filter plate 802 performs a primary filtration on the large particles in the dust in the gas so that the large particles in the dust fall into the collection box 806. The filter element 804 performs a secondary filtration on the gas, and the filtered gas is discharged through the shutter 805. When the collection box 806 needs to be cleaned, the locking handle 808 is pulled, and the locking handle 808 slides outward to pull the unlocking column 809 to slide outward. The unlocking column 809 slides outward to push the locking column 810 away from the collection box 806. The locking column 810 moves in the direction away from the collecting box 806 to compress the locking spring 811. The locking column 810 moves in the direction away from the collecting box 806 and disengages from the collecting box 806, thereby releasing the limiting position of the collecting box 806 by the locking column 810. At this time, the collecting box 806 is pulled out, and the dust in the collecting box 806 is dumped to the designated position. After the collecting box 806 is inserted back, the locking handle 808 is released, and the locking spring 811 releases the pressure to push the locking column 810 to contact the collecting box 806. The locking column 810 pushes the unlocking column 809 to reset. The unlocking column 809 resets and pulls the locking handle 808 to reset. The filter plate 802 and the filter element 804 can be pulled out for cleaning to avoid long-term use affecting the filtering effect.

[0029] When the walking mechanism 7 is started to push the device to move, the electronic throttle module 10 is stepped on, and the electronic throttle module 10 starts the walking motor 701. The output end of the walking motor 701 drives the driving gear 702 to rotate, and the driving gear 702 is meshed and connected with the pushing gear 703. The driving gear 702 rotates to drive the pushing gear 703 to rotate, and the pushing gear 703 rotates to drive the walking shaft 704 to rotate. The walking shaft 704 rotates to drive the walking wheel 705 to rotate, and the walking wheel 705 rotates to drive the device to move. The device mainly mills the road surface, so the moving speed is slow to ensure the milling effect of the device on the road surface.

[0030] When the device is operated by the steering mechanism 3 to perform reciprocating milling of the road surface, the steering wheel 301 is turned, and the steering wheel 301 drives the linkage shaft 302 to rotate, and the rotation of the linkage shaft 302 drives the linkage bevel gear 304 to rotate, and the linkage bevel gear 304 is meshed and connected with the steering bevel gear 305, and the steering bevel gear 305 drives the rotating disk 307 to rotate, and the rotation of the rotating disk 307 drives the two shock absorbing plates 308 to rotate, and the rotation of the shock absorbing plate 308 drives the steering wheel 310 to rotate, thereby driving the device to change direction and perform reciprocating milling of the road surface. When the road surface is uneven, the steering wheel 310 reciprocates up and down following the ups and downs of the ground, and the steering wheel 310 drives the upper shock absorbing plate 308 to reciprocate up and down, and the up and down reciprocating motion of the shock absorbing plate 308 compresses and stretches the shock absorbing spring 309 on the upper surface, and the shock absorbing spring 309 is continuously compressed and stretched, so that the device as a whole runs smoothly, ensuring the milling effect of the device on the road surface.

[0031] When the cutter of the milling mechanism 12 reaches the end of its service life or needs to be replaced after being damaged, the entire device is powered off, the maintenance door 9 is opened, and the pull handles 1211 are pushed to both sides, and the two pull handles 1211 move in opposite directions. The pull handles 1211 drive one end of the two connecting rods 1212 to move in opposite directions, and the reverse movement of one end of the two connecting rods 1212 pushes the other ends of the two connecting rods 1212 to move toward each other, and the other ends of the two connecting rods 1212 move toward each other and pull the two locking blocks 1213 to move toward each other, and the two locking blocks 1213 slide toward each other in the T-shaped groove of the guide rail 1215 and compress the compression spring 1214, and the locking block 1213 is disengaged from the gear-shaped groove on the side of the milling roller 1208, and the pressure plate 1209 is rotated clockwise to press The T-shaped slot of plate 1209 coincides with the T-shaped slot of milling roller 1208, and the pulling handle 1211 is released. The compression spring 1214 releases the pressure to push the two locking blocks 1213 to move in the opposite direction, and the two locking blocks 1213 slide into the toothed groove on the side of the milling roller 1208. The cutter seat 1216 of the cutter head 1217 that needs to be replaced is pulled out of the T-shaped slot of the milling roller 1208, and the limiting handle 1221 is pulled. The limiting handle 1221 drives the limiting shaft 1220 to slide outward, and the limiting shaft 1220 slides outward to drive the locking block 1223 to slide outward. The locking block 1223 slides outward and disengages from the limiting block 1218. The locking block 1223 slides outward to compress the limiting spring 1219, and the limiting handle 1221 is twisted 90 The limit block 1218 is then released to a horizontal position, and the reset spring 1222 releases the pressure to push the limit block 1218 to slide outward. At this time, the limit block 1218 releases the restriction on the cutter head 1217, and the severely worn cutter head 1217 can be replaced. After the new cutter head 1217 is replaced, the limit block 1218 is pressed back into the cutter seat 1216 and the reset spring 1222 is compressed. The limit handle 1221 is twisted 90 The limit spring 1219 releases the pressure to push the locking block 1223 to contact the limit block 1218. At this time, the cutter head 1217 is replaced, and the tool holder 1216 of the replaced cutter head 1217 is inserted back into the milling roller 1208. The two pulling handles 1211 are pushed outward, so that the two locking blocks 1213 slide out from the gear-shaped grooves on the side of the milling roller 1208. The pressure plate 1209 is rotated in the opposite direction to make the T-slot of the pressure plate 1209 misaligned with the milling roller 1208. The pulling handle 1211 is released, and the two locking blocks 1213 are reinserted into the gear-shaped grooves on the side of the milling roller 1208 under the action of the compression spring 1214. The pressure plate 1209 is reset to limit the tool holder 1216 again. The milling device is started to continue the road milling operation.

[0032] A method for using a milling device for municipal road maintenance comprises the following steps: S1. Open the charging door 6, place the fully charged battery in the battery compartment 11, connect the line and close the charging door 6, and the operator sits on the seat 5; S2, start the milling mechanism 12 through the operation panel 2 to mill the road surface, first use the electric telescopic rod 1201 to adjust the height of the milling roller 1208, then start the milling motor 1203, the output end of the milling motor 1203 drives the milling roller 1208 to rotate, and the road surface is gradually milled and leveled under the action of the cutter head 1217; S3, start the dust suction mechanism 8 through the operation panel 2, the suction fan 803 sucks the dust generated during the milling process of the milling mechanism 12 into the air collecting hood 807, the air containing dust is filtered by the filter plate 802 and the filter element 804, and the dust falls into the collection box 806, the collection box 806 can be removed by pulling the locking handle 808, and then the collected stones and dust are dumped at a designated location; S4, start the walking mechanism 7 through the operation panel 2, step on the electronic throttle module 10 to start the walking motor 701, the output end of the walking motor 701 drives the walking wheel 705 to rotate, and the rotation of the walking wheel 705 drives the entire milling device to move; S5, operate the milling device to mill the road back and forth through the steering mechanism 3, turn the steering wheel 301, the steering wheel 301 drives the steering wheel 310 to rotate, thereby driving the milling device to change direction, and mill the road back and forth. When the road surface is uneven, the steering wheel 310 reciprocates up and down following the ups and downs of the ground, and the shock-absorbing spring 309 is continuously compressed and stretched, so that the milling device as a whole runs smoothly; S6. When replacing the cutter head 1217 of the milling mechanism 12, open the maintenance door 9, push the pull handle 1211 to both sides, release the lock between the pressure plate 1209 and the milling roller 1208, turn the pressure plate 1209 clockwise, pull the cutter seat 1216 out of the T-shaped slide groove of the milling roller 1208, pull the limit handle 1221 and twist it 90 degrees to a horizontal position, and then the limit block 1218 can release the lock on the cutter head 1217. After the cutter head 1217 is replaced, press the limit block 1218 back into the cutter seat 1216 and compress the reset spring 1222, and twist the limit handle 1221 90 degrees to a horizontal position. Degree to vertical position and loosen, the limit spring 1219 releases the pressure to push the locking block 1223 to contact with the limit block 1218, the tool holder 1216 with the new tool head 1217 installed is inserted back into the milling roller 1208, the pull handle 1211 is moved and the pressure plate 1209 is pushed to reset, and the tool head 1217 of the milling mechanism 12 is replaced.

[0033] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A milling device for municipal road maintenance, characterized in that: The invention comprises a vehicle frame (4), the outer side of the vehicle frame (4) is fixedly connected to a vehicle shell (1), a milling mechanism (12) is arranged in the middle of the vehicle frame (4), a dust collecting mechanism (8) is arranged on one side of the milling mechanism (12), a walking mechanism (7) is arranged on one side of the dust collecting mechanism (8), a steering mechanism (3) is arranged on the other side of the milling mechanism (12), and the milling mechanism (12) comprises four electric telescopic rods (1201), the electric telescopic rods (1201) are fixedly connected to the vehicle frame (4), and the electric The output end of the telescopic rod (1201) is rotatably connected to a lifting seat (1202) via a rotating shaft; the lower side of the lifting seat (1202) is fixedly connected to a milling frame (1206); the lower end of the milling frame (1206) is rotatably connected to a milling roller (1208); a plurality of T-shaped slide grooves are provided on the arc-shaped outer side of the milling roller (1208); a gear-shaped groove is provided on the side of the milling roller (1208); four fixing bolts (1210) are connected to the side of the milling roller (1208) via threads; the fixing bolts The outer side of the pressing plate (1210) is slidably connected to a pressing plate (1209), and the side of the pressing plate (1209) is provided with four arc-shaped sliding grooves. The fixing bolt (1210) is slidably connected in the arc-shaped sliding groove. The arc-shaped side of the pressing plate (1209) is provided with a T-shaped sliding groove corresponding to the T-shaped sliding groove of the milling roller (1208). The pressing plate (1209) is fixedly connected to the side of the milling roller (1208) with two guide rails (1215). The cross section of the guide rail (1215) is L-shaped. A T-shaped slide groove is provided on the side thereof, a locking block (1213) is slidably connected in the T-shaped slide groove, a compression spring (1214) is fixedly connected between the locking block (1213) and the guide rail (1215), connecting rods (1212) are rotatably connected to the two sides of the locking block (1213) via a rotating shaft, and the other ends of the two connecting rods (1212) are rotatably connected to a pulling handle (1211), an elliptical through hole is provided on the side of the pressure plate (1209), and the pulling handle (1211) is slidably connected in the elliptical through hole.

2. A milling device for municipal road maintenance according to claim 1, characterized in that: The milling mechanism (12) further comprises a knife seat (1216), wherein the knife seat (1216) is slidably connected to the T-shaped slide groove of the milling roller (1208), a plurality of circular countersunk holes are provided on the side of the knife seat (1216), a knife head (1217) is slidably connected to the circular countersunk holes, a square hole is provided on the side of the knife seat (1216), a limiting block (1218) is slidably connected to the square hole, a return spring (1222) is fixedly connected between the limiting block (1218) and the knife seat (1216), the limiting block (1218) is slidably connected to the knife head (1217), a plurality of arc-shaped slide grooves are provided on the side of the limiting block (1218), and the arc-shaped slide grooves are provided on the side of the limiting block (1218). The diameter of the tool holder (1216) is consistent with the diameter of the tool head (1217); the other end of the tool holder (1216) is slidably connected to the limit shaft (1220); one end of the limit shaft (1220) is fixedly connected to the limit handle (1221); the other end of the limit shaft (1220) is fixedly connected to a locking block (1223); an annular groove is provided on the outside of the limit shaft (1220) and inside the tool holder (1216); a limit spring (1219) is fixedly connected inside the annular groove and between the locking block (1223) and the tool holder (1216); the locking block (1223) is slidably connected to the tool holder (1216) and the limit block (1218).

3. A milling device for municipal road maintenance according to claim 2, characterized in that: The milling mechanism (12) further comprises a milling motor (1203), wherein the milling motor (1203) is fixedly connected to the upper surface of the milling frame (1206), the output end of the milling motor (1203) is fixedly connected to a driving pulley (1204), the end of the milling roller (1208) passing through the milling frame (1206) is fixedly connected to a driven pulley (1207), and the outer sides of the driving pulley (1204) and the driven pulley (1207) are provided with a power belt (1205).

4. A milling device for municipal road maintenance according to claim 3, characterized in that: The dust suction mechanism (8) comprises an air collecting duct (801), the air collecting duct (801) is fixedly connected to the frame (4), a square through hole is opened inside the air collecting duct (801), shutters (805) are fixedly connected to both ends of the square through hole, two air suction fans (803) are fixedly connected inside the square through hole, two filter plates (802) are slidably connected inside the square through hole and located between the two air suction fans (803), two filter elements (804) are slidably connected inside the square through hole and located on the outer side surfaces of the two air suction fans (803), an air collecting hood (807) is fixedly connected to the lower surface of the air collecting duct (801), the air collecting hood (807) is connected to the air collecting duct (801) through the square hole, and the air collecting hood (807) is fixedly connected to the frame (4).

5. A milling device for municipal road maintenance according to claim 4, characterized in that: The dust suction mechanism (8) further comprises two collecting boxes (806), the collecting boxes (806) being slidably connected to the vehicle frame (4) and the vehicle shell (1), the collecting boxes (806) being connected to the air collecting duct (801) via a square hole, a circular hole being provided on the side of the collecting box (806), a locking column (810) being slidably connected in the circular hole, a circular hole being provided on the side of the vehicle frame (4), the locking column (810) being slidably connected in the circular hole of the vehicle frame (4), a locking spring (811) being fixedly connected between the locking column (810) and the vehicle frame (4), a square through hole being provided in the middle of the locking column (810), an unlocking column (809) being slidably connected in the square through hole, a trapezoidal sliding groove being provided in the middle of the unlocking column (809), the unlocking column (809) being slidably connected to the vehicle frame (4), and a locking handle (808) being fixedly connected at the end of the unlocking column (809).

6. A milling device for municipal road maintenance according to claim 5, characterized in that: The steering mechanism (3) comprises two linkage brackets (303), the linkage brackets (303) being fixedly connected to the vehicle frame (4), the other end of the linkage bracket (303) being rotatably connected to a linkage shaft (302), one end of the linkage shaft (302) being fixedly connected to a steering wheel (301), the other end of the linkage shaft (302) being fixedly connected to a linkage bevel gear (304), a steering bevel gear (305) being provided on the side of the linkage bevel gear (304), the linkage bevel gear (304) being meshingly connected to the steering bevel gear (305), the lower side of the steering bevel gear (305) being fixedly connected to a rotating disk (307) via a rotating shaft, the outer side of the rotating disk (307) being rotatably connected to a steering bracket (306), and the steering bracket (306) being fixedly connected to the vehicle frame (4).

7. A milling device for municipal road maintenance according to claim 6, characterized in that: The steering mechanism (3) further comprises a shock absorbing plate (308), the shock absorbing plate (308) being fixedly connected to the lower surface of the rotating disk (307), the lower surface of the shock absorbing plate (308) being fixedly connected to two guide shafts (311), the outer side of the lower end of the guide shaft (311) being slidably connected to another shock absorbing plate (308), the lower surface of the other shock absorbing plate (308) being rotatably connected to two steering wheels (310) via a rotating shaft, and a shock absorbing spring (309) being fixedly connected between the two shock absorbing plates (308).

8. A milling device for municipal road maintenance according to claim 7, characterized in that: The walking mechanism (7) comprises a walking motor (701), the walking motor (701) is fixedly connected to the frame (4), the output end of the walking motor (701) is fixedly connected to a driving gear (702), the lower side of the frame (4) is rotatably connected to a walking shaft (704), both ends of the walking shaft (704) are fixedly connected to walking wheels (705), the outer side of the walking shaft (704) is fixedly connected to a pushing gear (703), and the driving gear (702) is meshingly connected to the pushing gear (703).

9. A milling device for municipal road maintenance according to claim 8, characterized in that: One end of the vehicle frame (4) is fixedly connected to a battery compartment (11); a charging door (6) is rotatably connected to a side of the vehicle shell (1) and at a position corresponding to the battery compartment (11) via a rotating shaft; two maintenance doors (9) are rotatably connected to both sides of the vehicle shell (1) via a rotating shaft; an operating panel (2) is fixedly connected to one side of the vehicle shell (1); a seat (5) is fixedly connected to the upper surface of the battery compartment (11); and an electronic throttle module (10) is fixedly connected to the upper surface of the air collecting duct (801).

10. A method for using a milling device for municipal road maintenance according to claim 9, characterized in that: The following steps are involved: S1, opening the charging door (6), placing a fully charged battery in the battery compartment (11), connecting the line and closing the charging door (6), and the operator sitting on the seat (5); S2, starting the milling mechanism (12) through the operating panel (2) to mill the road surface, first using the electric telescopic rod (1201) to adjust the height of the milling roller (1208), then starting the milling motor (1203), the output end of the milling motor (1203) drives the milling roller (1208) to rotate, and the road surface is gradually milled and leveled under the action of the cutter head (1217); S3, starting the dust suction mechanism (8) through the operation panel (2), the suction fan (803) sucks the dust generated during the milling process of the milling mechanism (12) into the air collecting hood (807), the air containing dust is filtered by the filter plate (802) and the filter element (804), and the dust falls into the collection box (806), the locking handle (808) is pulled to remove the collection box (806), and the collected dust is dumped at a designated location; S4, starting the walking mechanism (7) through the operation panel (2), stepping on the electronic throttle module (10) to start the walking motor (701), the output end of the walking motor (701) drives the walking wheel (705) to rotate, and the rotation of the walking wheel (705) drives the entire milling device to move; S5, operating the milling device to perform reciprocating milling of the road surface through the steering mechanism (3), rotating the steering wheel (301), and the steering wheel (301) drives the steering wheel (310) to rotate, thereby driving the milling device to change direction and perform reciprocating milling of the road surface; when the road surface is uneven, the steering wheel (310) reciprocates up and down following the ups and downs of the ground, and the damping spring (309) is continuously compressed and stretched, thereby making the milling device run smoothly as a whole; S6. When replacing the cutter head (1217) of the milling mechanism (12), open the maintenance door (9), push the pull handle (1211) to both sides to release the lock between the pressure plate (1209) and the milling roller (1208), rotate the pressure plate (1209) clockwise to pull the cutter holder (1216) out of the T-shaped slide groove of the milling roller (1208), pull the limit handle (1221) and twist it 90 degrees to a horizontal position, so as to release the lock of the cutter head (1217) by the limit block (1218). After the cutter head (1217) is replaced, press the limit block (1218) back into the cutter holder (1216) and compress the return spring (1222), twist the limit handle (1221) 90 degrees to a horizontal position, and then release the limit block (1218) from the cutter head (1217). The limit spring (1219) is then released to release the pressure to push the locking block (1223) into contact with the limit block (1218). The cutter seat (1216) with the new cutter head (1217) installed is inserted back into the milling roller (1208). The pulling handle (1211) is moved and the pressure plate (1209) is pushed to reset. At this time, the cutter head (1217) of the milling mechanism (12) is replaced.

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