Road milling machine

Abstract

The utility model relates to the technical field of road machinery, and discloses a road milling machine which comprises a working table, a shell is fixedly connected to the left side of the top of the working table, driving parts are fixedly connected to the periphery of the bottom of the working table, and first servo motors are fixedly connected to the front end and the rear end of the left side of the top of the working table; the output ends of the two first servo motors are fixedly connected with first driving gears, the front side and the rear side of the workbench are fixedly connected with fixing plates, the inner walls of the two fixing plates are slidably connected with adjusting plates, and the adjacent sides of the two adjusting plates are fixedly connected with toothed plates; the two toothed plates are connected with the corresponding first driving gears in a meshed mode. According to the utility model, after the first servo motor is controlled to receive a signal, the first driving gear is driven to rotate, and the first driving gear is meshed with the toothed plate, so that the height of the milling drum is adjusted, the uneven road surface is effectively handled, and the flatness and quality of the milled road surface are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to road machinery technical field especially relates to a road milling machine. BACKGROUND

[0002] The milling machine is a kind of engineering machinery widely used in the field of road construction and maintenance, is used to mill various pavement materials, cuts down the material of certain thickness of surface layer, and the use of milling machine can effectively repair the disease of road surface, makes road surface restore flat, improves driving comfort and safety.

[0003] The road milling machine is a kind of equipment for milling work on the pavement of highway and urban road, through the milling cutter installed on the milling drum, high-speed rotation is driven under the power system, contacts with pavement and cuts material, and the road milling machine can accurately control milling depth and width, according to the actual situation of pavement disease, processes pavement.

[0004] The traditional road milling machine relies on the naked eye observation and experience of operator to manually adjust the height of milling drum, due to the complex and changeable actual situation of pavement, leading to the inconsistent milling depth in actual milling process, the existing technology sets scale mark near milling drum, to help operator more intuitively understand the height of milling drum, but in actual use process, due to the bumping factor of pavement, the milling machine will vibrate when working, which makes it difficult for operator to stably observe scale mark, and reading error exists, leading to the road surface flatness and quality after milling still cannot be guaranteed. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a kind of road milling machine, to improve the problem that in the actual operation of prior art, pavement bumping causes milling machine vibration, makes operator observe scale mark unstable, reading error, affects road surface flatness and quality after milling.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a road milling machine, including the workbench, the top left side of the workbench is fixedly connected with the shell, the bottom all around of the workbench is fixedly connected with the drive part, the top left side of the workbench is fixedly connected with servo motor no.

[0007] As a further description of the above technical solution:

[0008] The dismounting mechanism includes two positioning blocks, the top of two positioning blocks is fixedly connected at the bottom of the workbench, and the side away from each other of two positioning blocks is provided with a plurality of screws at equal intervals, a plurality of screws are respectively penetrated through the front and rear sides of the dust cover and are screw-connected in the inside of the corresponding positioning block, the left side of the dust cover is provided with a dust suction port, the left side of the dust cover is fixedly connected with a threaded pipe, the left side of the threaded pipe is screw-connected with a nut pipe, and the left side of the nut pipe is rotatably connected with a dust suction pipeline.

[0009] As a further description of the above technical solution:

[0010] The left side of the shell is fixedly connected with the headlamp, and the top of two headlamps is fixedly connected with the lampshade.

[0011] As a further description of the above technical solution:

[0012] The top right side of the workbench is fixedly connected with the seat, and the top of the seat is fixedly connected with the handrail.

[0013] As a further description of the above technical solution:

[0014] The top right side of the shell is fixedly connected with the support frame, and the top of two support frames is fixedly connected with the same roof.

[0015] As a further description of the above technical solution:

[0016] The controller is electrically connected with the plurality of driving components, the two servo motors, the two servo motors, the two headlamps and the automatic leveling sensor respectively.

[0017] As a further description of the above technical solution:

[0018] The left and right sides of the two fixed plates are fixedly connected with triangular blocks, and one side of the plurality of triangular blocks is fixedly connected to the front and rear sides of the workbench.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the nut pipe is slidably connected with a sealing ring, and the right side of the sealing ring is attached to the left side of the threaded pipe.

[0021] As a further description of the above technical solution:

[0022] The bottom of the workbench is provided with a dust suction cover, and the inner wall of the dust suction cover is treated by smoothing

[0023] The utility model has the following beneficial effects:

[0024] 1、The automatic leveling sensor in the utility model senses the road bumping in real time, feeds back the signal, and drives the driving gear one to rotate after the servo motor one receives the signal, the driving gear one is engaged with the toothed plate, thereby adjusting the milling drum height, effectively coping with the uneven road surface, at the same time, the servo motor two drives the driving gear two, and the milling drum is driven to rotate by the caterpillar belt for milling, and the dust suction cover collects dust, solves the difficulty in controlling the milling depth due to road bumping, and ensures the flatness and quality after road milling.

[0025] 2、When the blade needs to be replaced due to wear, the dismounting mechanism starts to work, first, the screws connecting the dust suction cover and the positioning blocks fixed at the front and rear ends of the workbench are unscrewed, the fixing of the dust suction cover in the front and rear directions is released, then the nut pipe threadedly connected with the threaded pipe on the left side of the dust suction cover is unscrewed, the connection between the dust suction pipeline and the dust suction cover is disconnected, in this way, the dust suction cover can be dismounted from the workbench, the obstacle to the replacement of the milling drum blade is eliminated, and the blade replacement operation can be smoothly carried out. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A perspective view of a road milling machine is provided for the utility model;

[0027] Figure 2 A structure side view of a road milling machine is provided for the utility model;

[0028] Figure 3This is a schematic diagram of the structure of a servo motor for a road milling machine proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the milling drum structure of a road milling machine proposed in this utility model;

[0030] Figure 5 This is a disassembly diagram of the disassembly mechanism of a road milling machine proposed in this utility model.

[0031] Legend:

[0032] 1. Workbench; 2. Disassembly Mechanism; 201. Positioning Block; 202. Screw; 203. Threaded Pipe; 204. Nut Pipe; 205. Suction Pipe; 206. Suction Port; 3. Housing; 4. Drive Components; 5. Servo Motor 1; 6. Drive Gear 1; 7. Fixing Plate; 8. Adjusting Plate; 9. Gear Plate; 10. Shaft; 11. Milling Drum; 12. Driven Gear; 13. Servo Motor 2; 14. Drive Gear 2; 15. Track; 16. Headlight; 17. Lampshade; 18. Seat; 19. Armrest; 20. Support Frame; 21. Canopy; 22. Controller; 23. Triangular Block; 24. Sealing Ring; 25. Automatic Leveling Sensor; 26. Suction Cover. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a road milling machine, including a workbench 1 that provides an installation platform for various components. A housing 3 is fixedly connected to the top left side of the workbench 1, providing protection for the internal components. Drive components 4 are fixedly connected to all four sides of the bottom of the workbench 1, providing the milling machine with the necessary power for movement. Servo motors 5 are fixedly connected to the front and rear ends of the top left side of the workbench 1, providing power for adjusting the height of the milling drum 11. The output ends of both servo motors 5 are fixedly connected to drive gears 6, which transmit the rotational power of the servo motors 5 to the drive gears 6. The worktable 1 is provided with toothed plates 9. Fixed plates 7 are fixedly connected to both the front and rear sides of the worktable 1. The fixed plates 7 provide sliding tracks for the adjusting plates 8. Adjusting plates 8 are slidably connected to the inner walls of both fixed plates 7. The adjusting plates 8 can slide up and down within the fixed plates 7 to adjust the height of the milling drum 11. Toothed plates 9 are fixedly connected to adjacent sides of both adjusting plates 8. The toothed plates 9 mesh with the drive gear 6 to achieve the up and down movement of the adjusting plates 8. The two toothed plates 9 are respectively meshed with their corresponding drive gears 6, thereby precisely controlling the lifting and lowering of the adjusting plates 8. The bottom of both adjusting plates 8 is fixedly connected to the same rotating shaft 10, which connects the adjusting plates 8 to the milling drum 11. Drum 11 transmits the positional changes of the adjusting plate 8. The milling drum 11 is rotatably connected to the outer wall of the rotating shaft 10. The milling drum 11 is responsible for milling the road surface. Driven gears 12 are fixedly connected to the front and rear ends of the milling drum 11, transmitting power to the track 15. Servo motors 13 are fixedly connected to the front and rear ends of the bottom of the worktable 1, providing power for the rotation of the milling drum 11. Driven gears 14 are fixedly connected to the output ends of both servo motors 13, transmitting power from the servo motors 13 to the track 15. The two drive gears 14 and the two driven gears 12... The outer wall is respectively connected to corresponding tracks 15, which drive the milling drum 11 to rotate, realizing road milling. An automatic leveling sensor 25 is fixedly connected to the left side of the workbench 1. The automatic leveling sensor 25 senses the road bumps in real time and provides feedback information for adjusting the height of the milling drum 11. A dust collection hood 26 is set at the bottom of the workbench 1. The dust collection hood 26 collects the dust generated by the milling operation. The inner wall of the dust collection hood 26 is smoothed to improve the working environment. A disassembly mechanism 2 is set at the bottom front of the workbench 1. The disassembly mechanism 2 is used to install and disassemble the dust collection hood 26, so that the dust collection hood 26 can be removed when needed.

[0035] Specifically, when the road milling machine is running, the outer shell 3 fixedly connected to the top left side of the worktable 1 can protect some of the internal components. The servo motors 5 at the front and rear ends of the top left side of the worktable 1 are connected to the drive gear 6 at their output ends. When the automatic leveling sensor 25 detects road bumps in real time, it will send a signal to control the servo motor 5. At this time, the servo motor 5 receives the signal and starts to work, driving the drive gear 6 to rotate. Since the inner wall of the fixed plate 7 fixedly connected to the front and rear sides of the worktable 1 is slidably connected to the adjusting plate 8, and the toothed plate 9 fixedly connected to the adjacent side of the adjusting plate 8 is meshed with the drive gear 6, the rotation of the drive gear 6 drives the toothed plate 9 to move, thereby causing the adjusting plate 8 to slide up and down within the fixed plate 7. The two adjusting plates 8 are fixedly connected to the rotating shaft 10 at their bottom, and the milling drum 11 is rotatably connected to its outer wall. Therefore, the sliding of the adjusting plate 8 can adjust the height of the milling drum 11, thus effectively dealing with uneven road surfaces. At the same time, the servo motor 13 is fixedly connected to the front and rear ends of the bottom of the worktable 1, and its output end is connected to the drive gear 14. The driven gear 12 is fixedly connected to the front and rear ends of the milling drum 11 and is meshed with the drive gear 14 through the track 15. The servo motor 13 drives the drive gear 14 to rotate, which drives the driven gear 12 through the track 15, and then drives the milling drum 11 to rotate, performing milling operations on the road surface. This solves the problem that the milling depth is difficult to control due to road bumps, which affects the smoothness and quality of the road surface.

[0036] Reference Figure 1 , Figure 2 and Figure 5 The disassembly mechanism 2 includes two positioning blocks 201, which provide mounting points for the dust cover 26. The tops of the two positioning blocks 201 are fixedly connected to the front and rear ends of the bottom of the workbench 1, respectively, so that the positioning blocks 201 are firmly installed on the bottom of the workbench 1. Multiple screws 202 are equidistantly arranged on the opposite sides of the two positioning blocks 201. The screws 202 are used to connect the positioning blocks 201 and the dust cover 26. The multiple screws 202 pass through the front and rear sides of the dust cover 26 and are threaded into the interior of the corresponding positioning blocks 201, thus firmly securing the dust cover 26 through the threaded connection. Fixed to the bottom of the workbench 1, the dust suction hood 26 has a dust suction port 206 on its left side. The dust suction port 206 is used to suck up the dust generated by milling operations. A threaded tube 203 is fixedly connected to the left side of the dust suction hood 26. The threaded tube 203 provides an interface for connecting the dust suction pipe 205. A nut tube 204 is threadedly connected to the left side of the threaded tube 203. The nut tube 204 is threaded to the threaded tube 203 to achieve a detachable connection with the dust suction pipe 205. The dust suction pipe 205 is rotatably connected to the left side of the nut tube 204 so that the dust suction pipe 205 can rotate flexibly after connection.

[0037] Specifically, when the blades are worn and need to be replaced, the disassembly mechanism 2 starts working. First, the operator needs to unscrew the screws 202 that connect the dust hood 26 to the positioning blocks 201 at the front and rear ends of the bottom of the worktable 1. This step releases the fixed constraint of the dust hood 26 in the front and rear direction, so that it is no longer restricted in this direction. After that, the operator unscrews the nut tube 204 that is threaded to the threaded tube 203 on the left side of the dust hood 26. This action disconnects the connection between the dust suction pipe 205 and the dust hood 26. By completing these two steps in sequence, the connection between the dust hood 26 and the worktable 1 and the dust suction pipe 205 is released. In this way, the dust hood 26 can be easily removed from the worktable 1. After the dust hood 26 is removed, its obstruction to the replacement of the milling drum 11 blades is eliminated, so that the blade replacement operation can be carried out smoothly, ensuring the continuous and efficient operation of the road milling machine.

[0038] Reference Figure 1 , Figure 2 and Figure 5 The front and rear ends of the left side of the outer casing 3 are fixedly connected to headlights 16. These headlights 16 provide illumination for the milling machine in low-light conditions, ensuring the operator can clearly observe the work area. Lamp covers 17 are fixedly connected to the top of each headlight 16, protecting them and also refracting and focusing the light to improve illumination. A seat 18 is fixedly connected to the top right side of the workbench 1. The seat 18 provides a comfortable seating position for the operator, reducing fatigue during long hours of work. Armrests 19 are fixedly connected to the front and rear sides of the top of the seat 18, providing a convenient grip and increasing stability. Support frames 20 are fixedly connected to the front and rear ends of the top right side of the outer casing 3. These support frames 20 provide a supporting structure for the canopy 21, ensuring its stable installation. The tops of both support frames 20 are fixedly connected to the same canopy 21. The canopy 21 provides shade from sunlight and rain for operators, improving the operating environment. A controller 22 is fixedly connected to the top right side of the outer shell 3 to ensure that all components work together. The controller 22 is electrically connected to multiple drive components 4, two servo motors 1 5, two servo motors 2 13, two headlights 16, and an automatic leveling sensor 25. It achieves precise control of each component through electrical signal transmission. Triangular blocks 23 are fixedly connected to the left and right sides of the two fixed plates 7. The triangular blocks 23 enhance the connection strength between the fixed plates 7 and the workbench 1, improving the overall structural stability. One side of the multiple triangular blocks 23 is fixedly connected to the front and rear sides of the workbench 1, respectively. A sealing ring 24 is slidably connected to the outer wall of the nut tube 204. The sealing ring 24 plays a sealing role. The right side of the sealing ring 24 fits against the left side of the threaded tube 203 to prevent dust and debris from entering from the connection between the nut tube 204 and the threaded tube 203, ensuring the sealing of the dust collection system.

[0039] Specifically, the headlight 16 provides illumination for the milling machine in low-light environments, ensuring that the operator can clearly observe the work area. The lampshade 17 protects the headlight 16 and also refracts and focuses the light to improve the lighting effect. The seat 18 provides a comfortable seating position for the operator, reducing fatigue during long-term work. The armrest 19 makes it easy for the operator to grip during work, increasing the stability of the seat. The support frame 20 provides a support structure for the canopy 21, ensuring the stable installation of the canopy 21. The canopy 21 shields the operator from sunlight and rain, improving the working environment. The controller 22 serves as the control center of the equipment, realizing centralized control of multiple drive components 4, two servo motors 5, two servo motors 13, two headlights 16, and automatic leveling sensor 25, ensuring that all components work together. The triangular block 23 enhances the connection strength between the fixed plate 7 and the worktable 1, improving the overall structural stability. The right side of the sealing ring 24 fits against the left side of the threaded pipe 203, preventing dust and debris from entering from the connection between the nut pipe 204 and the threaded pipe 203.

[0040] Working Principle: When the road milling machine is running, the outer shell 3, which is fixedly connected to the top left side of the worktable 1, can protect some of the internal components. The servo motors 5 at the front and rear ends of the top left side of the worktable 1 are connected to the drive gear 6 at their output ends. When the automatic leveling sensor 25 detects road bumps in real time, it will send a signal to control the servo motor 5. At this time, the servo motor 5 receives the signal and starts to work, driving the drive gear 6 to rotate. Since the inner wall of the fixed plate 7, which is fixedly connected to the front and rear sides of the worktable 1, is slidably connected to the adjusting plate 8, and the toothed plate 9, which is fixedly connected to the adjacent side of the adjusting plate 8, is meshed with the drive gear 6, the rotation of the drive gear 6 drives the toothed plate 9 to move, thereby causing the adjusting plate 8 to slide up and down within the fixed plate 7. The two adjusting plates 8 are fixedly connected to the rotating shaft 10 at their bottom, and the milling drum 11 is rotatably connected to the outer wall of the shaft. Therefore, the sliding of the adjusting plates 8 can adjust the height of the milling drum 11, thus effectively dealing with the unevenness of the road surface. At the same time, the servo motor 13 is fixedly connected to the front and rear ends of the bottom of the worktable 1, and its output end is connected to the drive gear 14. The driven gear 12 is fixedly connected to the front and rear ends of the milling drum 11 and is meshed with the drive gear 14 through the track 15. The servo motor 13 drives the drive gear 14 to rotate, which drives the driven gear 12 through the track 15, and then drives the milling drum 11 to rotate, performing milling operations on the road surface. This solves the problem that the milling depth is difficult to control due to the bumpy road surface, which affects the flatness and quality of the road surface.

[0041] Furthermore, when the blades are worn and need to be replaced, the disassembly mechanism 2 begins to operate. First, the operator needs to unscrew the screws 202 that connect the dust hood 26 to the positioning blocks 201 at the front and rear ends of the bottom of the worktable 1. This step releases the fixed constraint of the dust hood 26 in the front-back direction, making it no longer restricted in that direction. After that, the operator unscrews the nut tube 204 that is threaded to the threaded tube 203 on the left side of the dust hood 26. This action disconnects the connection between the dust suction pipe 205 and the dust hood 26. By completing these two steps in sequence, the connection between the dust hood 26 and the worktable 1, as well as the dust suction pipe 205, is released. In this way, the dust hood 26 can be easily removed from the worktable 1. After the dust hood 26 is removed, its obstruction to the replacement of the milling drum 11 blades is eliminated, allowing the blade replacement operation to be carried out smoothly and ensuring the continuous and efficient operation of the road milling machine.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A road milling machine, comprising a worktable (1), characterized in that: A housing (3) is fixedly connected to the top left side of the workbench (1). A drive component (4) is fixedly connected to all four sides of the bottom of the workbench (1). A servo motor (5) is fixedly connected to the front and rear ends of the top left side of the workbench (1). A drive gear (6) is fixedly connected to the output ends of the two servo motors (5). A fixed plate (7) is fixedly connected to the front and rear sides of the workbench (1). An adjusting plate (8) is slidably connected to the inner wall of the two fixed plates (7). A toothed plate (9) is fixedly connected to the adjacent side of the two adjusting plates (8). The two toothed plates (9) are respectively meshed with the corresponding drive gear (6). The bottom of the two adjusting plates (8) is fixedly connected to the same rotating gear. A milling drum (11) is rotatably connected to the outer wall of the shaft (10). A driven gear (12) is fixedly connected to the front and rear ends of the milling drum (11). A servo motor (13) is fixedly connected to the front and rear ends of the bottom of the worktable (1). A drive gear (14) is fixedly connected to the output ends of the two servo motors (13). Corresponding tracks (15) are meshed on the outer walls of the two drive gears (14) and the two driven gears (12). An automatic leveling sensor (25) is fixedly connected to the left side of the worktable (1). A disassembly mechanism (2) is provided on the front side of the bottom of the worktable (1). The disassembly mechanism (2) is used to install and disassemble the dust cover (26).

2. A road milling machine according to claim 1, characterized in that: The disassembly mechanism (2) includes two positioning blocks (201). The tops of the two positioning blocks (201) are fixedly connected to the front and rear ends of the bottom of the workbench (1). Multiple screws (202) are equidistantly arranged on the opposite sides of the two positioning blocks (201). The multiple screws (202) pass through the front and rear sides of the dust hood (26) and are threaded into the interior of the corresponding positioning block (201). A dust suction port (206) is provided on the left side of the dust suction hood (26). A threaded tube (203) is fixedly connected to the left side of the dust suction hood (26). A nut tube (204) is threadedly connected to the left side of the threaded tube (203). A dust suction pipe (205) is rotatably connected to the left side of the nut tube (204).

3. A road milling machine according to claim 1, characterized in that: The front and rear ends of the left side of the outer shell (3) are fixedly connected with headlights (16), and the tops of the two headlights (16) are fixedly connected with lamp covers (17).

4. A road milling machine according to claim 1, characterized in that: A seat (18) is fixedly connected to the top right side of the workbench (1), and armrests (19) are fixedly connected to the front and back sides of the top of the seat (18).

5. A road milling machine according to claim 1, characterized in that: The top right front and rear ends of the outer shell (3) are fixedly connected to support frames (20), and the tops of the two support frames (20) are fixedly connected to the same canopy (21).

6. A road milling machine according to claim 1, characterized in that: A controller (22) is fixedly connected to the top right side of the housing (3). The controller (22) is electrically connected to multiple drive components (4), two servo motors (5), two servo motors (13), two headlights (16), and an automatic leveling sensor (25).

7. A road milling machine according to claim 1, characterized in that: Triangular blocks (23) are fixedly connected to the left and right sides of the two fixed plates (7), and one side of each of the multiple triangular blocks (23) is fixedly connected to the front and rear sides of the workbench (1).

8. A road milling machine according to claim 2, characterized in that: The outer wall of the nut tube (204) is slidably connected with a sealing ring (24), and the right side of the sealing ring (24) is in contact with the left side of the threaded tube (203).

9. A road milling machine according to claim 1, characterized in that: The bottom of the workbench (1) is provided with a dust collection hood (26), and the inner wall of the dust collection hood (26) is smoothed.

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