Road milling machine

Abstract

The invention relates to the technical field of road milling, and discloses a road milling machine which comprises a rack body, a console is fixedly mounted at the top of the rack body, a transmission structure is arranged in the rack body, a conveying structure is arranged in the rack body, and a sound insulation mechanism is arranged at the bottom of the rack body. According to the road milling machine, by arranging the sound insulation mechanism, when the ground needs to be milled and repaired, the machine frame body is driven to the road surface through the control console, then the milling structure and the electric hydraulic telescopic rod are started, the ground is milled, and a large amount of noise is generated; according to the sound insulation mechanism, a part of noise is reduced through the metal sound absorption layer, the noise is spread outwards to the outer sound insulation box, the other part of noise is reduced through the mineral wool sound absorption layer, and therefore double sound absorption and noise reduction are achieved, the noise can be greatly reduced through the double sound absorption plates, and the hearing of workers is prevented from being affected.

Description

Technical Field

[0001] This invention relates to the field of road milling technology, specifically to a road milling machine. Background Technology

[0002] A road milling machine is a type of mechanical equipment used for asphalt pavement maintenance and construction. It is mainly used for excavation and renovation of asphalt concrete pavement in highways, urban roads, airports, freight yards, etc. It can remove defects such as bumps, oil waves, textures, and ruts on the road surface, excavate potholes and trenches, and roughen cement pavement and mill misalignments. With the continuous improvement of road maintenance, various milling machines have emerged, such as a road milling machine.

[0003] Existing road milling machines primarily focus on improving the hardness of the milling cutters. These machines typically consist of a frame, control console, power unit, conveyor assembly, and milling assembly. The control console moves the frame to the surface to be worked on, the milling assembly mills the ground, and the conveyor assembly transports the waste material to a truck at the rear. While capable of milling and resurfacing the ground, noise is generated when the ground contacts the milling cutters during pothole removal. Prolonged resurfacing work results in persistent noise pollution. Furthermore, the high-lift conveyor assembly dropping waste material into the truck bed generates dust, which is detrimental to the urban environment. Therefore, a new road milling machine is proposed that utilizes double sound-absorbing panels to significantly reduce noise and prevent hearing damage to workers, and that sprays waste material to suppress dust, thus improving the urban environment. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a road milling machine that features the ability to significantly reduce noise using double sound-absorbing panels, preventing damage to workers' hearing, and the ability to spray waste materials to suppress dust, thus preventing dust from flying and benefiting the urban environment. It solves the problems of noise generated when the ground and milling cutter come into contact during road surface cleaning, which leads to persistent noise from repeated road repairs, and the dust generated when the waste is transported to the truck via a high-lift conveyor system, causing dust to fall into the truck bed and creating a pollutant environment.

[0005] (II) Technical Solution To achieve the above-mentioned goals of significantly reducing noise using double sound-absorbing panels to avoid affecting the hearing of workers, and spraying waste materials to suppress dust and prevent dust from flying, thus benefiting the urban environment, the present invention provides the following technical solution: a road milling machine, including a frame body, a control console fixedly installed on the top of the frame body, a transmission structure inside the frame body, a conveying structure inside the frame body, and a sound insulation mechanism at the bottom of the frame body; The sound insulation mechanism includes connecting columns, an outer sound insulation box, a mineral wool sound-absorbing layer, an inner sound insulation box, a metal sound-absorbing layer, an outlet one, an outlet two, and an electric hydraulic telescopic rod. Four connecting columns are fixedly installed at the bottom of the frame body, and an outer sound insulation box is fixedly installed at the bottom of the four connecting columns. The outer sound insulation box is equipped with a mineral wool sound-absorbing layer inside, and an inner sound insulation box is equipped with a metal sound-absorbing layer inside. An outlet one is opened on the outside of the outer sound insulation box, and an outlet two is opened on the outside of the inner sound insulation box. An electric hydraulic telescopic rod is fixedly installed on the top of the inner sound insulation box.

[0006] Preferably, the conveying structure includes a first belt conveyor, a rotating roller, a second belt conveyor, and a fixed rod. The first belt conveyor is installed inside the frame body, the rotating roller is installed at the bottom of the frame body, the second belt conveyor is installed on the right side of the frame body, and the fixed rod is fixedly connected to the right side of the frame body.

[0007] Preferably, a dust suppression mechanism is provided on the outside of the frame body. The dust suppression mechanism includes a dust suppression box, a diverter plate, nozzles, a conveying pipe, a hose, a water pump, and a water tank. The dust suppression box is fixedly installed on the outside of the belt conveyor. The diverter plate is fixedly installed inside the dust suppression box. Several nozzles are provided at the bottom of the diverter plate. The conveying pipe is fixedly connected to the outside of the diverter plate. The hose is fixedly connected to the outside of the conveying pipe. A water pump is provided inside the frame body. A water tank is provided at the bottom of the water pump.

[0008] Preferably, the transmission structure includes an engine assembly, a transmission assembly, and track wheels. The engine assembly and the transmission assembly are disposed inside the frame body, and the track wheels are disposed outside the transmission assembly.

[0009] Preferably, the conveying structure includes an inner soundproof box with a milled structure inside, and a feed inlet is provided at the bottom of the inner soundproof box.

[0010] Preferably, the left side of the fixing rod is fixedly connected to the frame body, and the right side of the fixing rod is fixedly connected to the belt conveyor.

[0011] Preferably, a first locking block is fixedly installed on the top of the fixing rod, and a second locking block is fixedly installed on the left side of the dust collection box.

[0012] Preferably, the top of the external soundproof box is provided with an movable hole, which is adapted to the electro-hydraulic telescopic rod.

[0013] Preferably, the water pump inlet is fixedly connected to the water tank, the water pump outlet is fixedly connected to the hose, and the delivery pipe is connected to the water pump through the hose.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a road milling machine, which has the following beneficial effects: 1. This road milling machine, by incorporating a sound insulation mechanism, allows the machine frame to be moved onto the road surface via the control console when milling repairs are needed. The milling structure and electric hydraulic telescopic rod are then activated to mill the ground, generating significant noise. Since the milling structure is located inside the inner sound insulation box, some of the noise is reduced by the metal sound-absorbing layer. The noise then propagates outward to the outer sound insulation box, where another portion is reduced by the mineral wool sound-absorbing layer, thus creating double sound absorption and reducing noise. This sound insulation mechanism can significantly reduce noise using double sound-absorbing panels, preventing any impact on the hearing of workers.

[0015] 2. This road milling machine, by setting up a dust suppression mechanism, after the road surface is milled by the milling structure, the waste material is transported from the conveying structure to the dust suppression box. The control panel turns on the water pump, and the clean water inside the water tank is sprayed out through the hose and conveying pipe to the nozzle. The waste material is dispersed into the clean water, causing the dust in the air to combine with the moisture and fall, thus preventing the dust from flying. This dust suppression mechanism can spray the waste material to suppress dust and prevent the dust from flying. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the structure of the present invention; Figure 2 This is a front sectional view of the road milling structure of the present invention; Figure 3 This is a front sectional view of the external soundproof enclosure of the present invention; Figure 4 This is a schematic diagram of the external soundproof box of the present invention; Figure 5 This is a schematic diagram of the external soundproof box of the present invention; Figure 6 For the present invention Figure 2 Enlarged view of point A in the middle.

[0017] In the diagram: 1. Frame body; 2. Control console; 3. Transmission structure; 301. Engine assembly; 302. Transmission assembly; 303. Track wheel; 4. Conveying structure; 401. Belt conveyor one; 402. Rotating roller; 403. Belt conveyor two; 404. Fixed rod; 5. Sound insulation mechanism; 501. Connecting column; 502. External sound insulation box; 503. Mineral wool sound-absorbing layer; 504. Internal sound insulation box; 505. Metal sound-absorbing layer; 506. Outlet one; 507. Outlet two; 508. Electro-hydraulic telescopic rod; 6. Dust suppression mechanism; 601. Dust suppression box; 602. Diverter plate; 603. Nozzle; 604. Conveying pipe; 605. Hose; 606. Water pump; 607. Water tank; 701. Milling structure; 702. Feed inlet; 801. Locking block one; 802. Locking block two; 9. Movable hole. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-6 A road milling machine includes a frame body 1, a control console 2 fixedly installed on the top of the frame body 1, a transmission structure 3 inside the frame body 1, a conveying structure 4 inside the frame body 1, and a sound insulation mechanism 5 at the bottom of the frame body 1. The sound insulation mechanism 5 includes connecting columns 501, an outer sound insulation box 502, a mineral wool sound-absorbing layer 503, an inner sound insulation box 504, a metal sound-absorbing layer 505, an outlet 1 506, an outlet 2 507, and an electric hydraulic telescopic rod 508. Four connecting columns 501 are fixedly installed at the bottom of the frame body 1. An outer sound insulation box 502 is fixedly installed at the bottom of the four connecting columns 501. A mineral wool sound-absorbing layer 503 is installed inside the outer sound insulation box 502. An inner sound insulation box 504 is installed inside the outer sound insulation box 502. A metal sound-absorbing layer 505 is installed inside the inner sound insulation box 504. An outlet 1 506 is opened on the outside of the outer sound insulation box 502. An outlet 2 507 is opened on the outside of the inner sound insulation box 504. An electric hydraulic telescopic rod 508 is fixedly installed on the top of the inner sound insulation box 504.

[0020] In the implementation of the case, the conveying structure 4 includes a belt conveyor 401, a rotating roller 402, a belt conveyor 403, and a fixed rod 404. The belt conveyor 401 is installed inside the frame body 1, the rotating roller 402 is installed at the bottom of the frame body 1, the belt conveyor 403 is installed on the right side of the frame body 1, and the fixed rod 404 is fixedly connected to the right side of the frame body 1.

[0021] In the implementation of the case, a dust suppression mechanism 6 is set on the outside of the frame body 1. The dust suppression mechanism 6 includes a dust suppression box 601, a diverter plate 602, a nozzle 603, a conveying pipe 604, a hose 605, a water pump 606, and a water tank 607. The dust suppression box 601 is fixedly installed on the outside of the belt conveyor 403. The diverter plate 602 is fixedly installed inside the dust suppression box 601. Several nozzles 603 are set at the bottom of the diverter plate 602. The conveying pipe 604 is fixedly connected to the outside of the diverter plate 602. The hose 605 is fixedly connected to the outside of the conveying pipe 604. The water pump 606 is set inside the frame body 1. The water tank 607 is set at the bottom of the water pump 606.

[0022] In the implementation of the case, the transmission structure 3 includes an engine assembly 301, a transmission assembly 302, and a track wheel 303. The engine assembly 301 and the transmission assembly 302 are installed inside the frame body 1, and the track wheel 303 is installed outside the transmission assembly 302. By setting the engine assembly 301 and the transmission assembly 302, power can be provided to drive the track wheel 303 to run, so that the road surface can be continuously milled.

[0023] In the implementation of the case, the conveying structure 4 includes a milling structure 701 inside the inner soundproof box 504. The bottom of the inner soundproof box 504 is provided with a feed port 702. By setting the milling structure 701, the ground can be milled. By setting the feed port 702, the ground can come into contact with the milling structure 701.

[0024] In the implementation of the case, the left side of the fixing rod 404 is fixedly connected to the frame body 1, and the right side of the fixing rod 404 is fixedly connected to the belt conveyor 403. By setting the fixing rod 404, the belt conveyor 403 can be stably connected to the frame body 1.

[0025] In the implementation of the case, a locking block 801 is fixedly installed on the top of the fixing rod 404, and a locking block 802 is fixedly installed on the left side of the dust collection box 601. By setting the locking block 801 and the locking block 802, the hose 605 can be restricted to prevent the hose 605 from falling off.

[0026] In the implementation of the case, the top of the external soundproof box 502 is provided with an movable hole 9, which is adapted to the electric hydraulic telescopic rod 508. By setting the movable hole 9, the electric hydraulic telescopic rod 508 can push the milling structure 701 inside the internal soundproof box 504 to mill and repair the ground.

[0027] In the implementation of the case, the inlet of the water pump 606 is fixedly connected to the water tank 607, the outlet of the water pump 606 is fixedly connected to the hose 605, and the delivery pipe 604 is connected to the water pump 606 through the hose 605. By setting up the delivery pipe 604, the water pump 606 and the water tank 607, the purified water can be transported to the inside of the diversion plate 602 through the water pump 606, and then sprayed out as water mist through the nozzles 603 to suppress dust. The inside of the diversion plate 602 is provided with a water transport trough, which is connected to several nozzles 603.

[0028] In the implementation of this case, the console 2 is electrically connected to all electronic components in this patent via wires, thereby operating all electronic components in this patent by operating the console 2.

[0029] When implementing this procedure, please follow these steps: 1) When the ground needs to be milled and repaired, the frame body 1 is opened to the road surface through the control console 2, and then the milling structure 701 and the electric hydraulic telescopic rod 508 are started to mill the ground, generating a lot of noise; 2) Then, through the milling of the outer inner soundproof box 504 of the structure 701, the noise is reduced by part of the metal sound-absorbing layer 505, and the noise is transmitted outward to the outer soundproof box 502, where the other part of the noise is reduced by the mineral wool sound-absorbing layer 503, thus forming double sound absorption and reducing noise. 3) After the milling structure 701 mills the road surface, the waste material is transported from the conveying structure 4 to the dust collection box 601, and the control console 2 turns on the water pump 606. 4) Finally, the clean water inside the water tank 607 is sprayed out through the hose 605 and the delivery pipe 604 to the nozzle 603. The waste is dispersed into the clean water, so that the dust in the air combines with the moisture and falls down, preventing the dust from flying.

[0030] In summary, this road milling machine, by incorporating a sound insulation mechanism 5, allows the machine frame 1 to be moved onto the road surface via the control console 2 when milling repairs are needed. The milling structure 701 and the electric hydraulic telescopic rod 508 are then activated to mill the ground, generating significant noise. Since the milling structure 701 is located inside the inner sound insulation box 504, some of the noise is reduced by the metal sound-absorbing layer 505. The noise then propagates outward to the outer sound insulation box 502, where another portion is reduced by the mineral wool sound-absorbing layer 503, thus forming double sound absorption and reducing noise. This sound insulation mechanism 5 can significantly reduce noise using double sound-absorbing panels, preventing any impact on the hearing of workers.

[0031] Furthermore, the road milling machine, by setting up a dust suppression mechanism 6, after the road surface is milled by the milling structure 701, the waste material is transported from the conveying structure 4 to the dust suppression box 601. The control console 2 turns on the water pump 606, and sprays the clean water inside the water tank 607 through the hose 605 and the conveying pipe 604 to the nozzle 603. The waste material is dispersed into the clean water, so that the dust in the air combines with the moisture and falls, preventing the dust from flying. The dust suppression mechanism 6 can spray the waste material to suppress dust and prevent the dust from flying.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A road milling machine, comprising a frame body (1), characterized in that: A control console (2) is fixedly installed on the top of the frame body (1), a transmission structure (3) is provided inside the frame body (1), a conveying structure (4) is provided inside the frame body (1), and a sound insulation mechanism (5) is provided at the bottom of the frame body (1). The sound insulation mechanism (5) includes connecting columns (501), an outer sound insulation box (502), a mineral wool sound-absorbing layer (503), an inner sound insulation box (504), a metal sound-absorbing layer (505), an outlet one (506), an outlet two (507), and an electric hydraulic telescopic rod (508). Four connecting columns (501) are fixedly installed at the bottom of the frame body (1), and an outer sound insulation box (502) is fixedly installed at the bottom of the four connecting columns (501). The outer soundproof box (502) is provided with a mineral wool sound-absorbing layer (503), the inner soundproof box (504) is provided inside the outer soundproof box (502), the inner soundproof box (504) is provided with a metal sound-absorbing layer (505), the outer soundproof box (502) has an outlet one (506) on the outside, the inner soundproof box (504) has an outlet two (507) on the outside, and an electric hydraulic telescopic rod (508) is fixedly installed on the top of the inner soundproof box (504).

2. A road milling machine according to claim 1, characterized in that: The conveying structure (4) includes a belt conveyor (401), a rotating roller (402), a belt conveyor (403), and a fixed rod (404). The belt conveyor (401) is installed inside the frame body (1). The rotating roller (402) is installed at the bottom of the frame body (1). The belt conveyor (403) is installed on the right side of the frame body (1). The fixed rod (404) is fixedly connected to the right side of the frame body (1).

3. A road milling machine according to claim 2, characterized in that: The frame body (1) is provided with a dust suppression mechanism (6) on the outside. The dust suppression mechanism (6) includes a dust suppression box (601), a diverter plate (602), a nozzle (603), a conveying pipe (604), a hose (605), a water pump (606), and a water tank (607). The belt conveyor (403) is fixedly installed with a dust suppression box (601) on the outside. The dust suppression box (601) is fixedly installed with a diverter plate (602) inside. The bottom of the diverter plate (602) is provided with a number of nozzles (603). The diverter plate (602) is fixedly connected to the outside of the diverter plate (602). The conveying pipe (604) is fixedly connected to the outside of the conveying pipe (604). The hose (605) is fixedly connected to the outside of the conveying pipe (604). The frame body (1) is provided with a water pump (606). The bottom of the water pump (606) is provided with a water tank (607).

4. A road milling machine according to claim 1, characterized in that: The transmission structure (3) includes an engine assembly (301), a transmission assembly (302), and a track wheel (303). The engine assembly (301) and the transmission assembly (302) are arranged inside the frame body (1), and the track wheel (303) is arranged outside the transmission assembly (302).

5. A road milling machine according to claim 1, characterized in that: The conveying structure (4) includes an inner soundproof box (504) with a milling structure (701) inside, and a feed inlet (702) is provided at the bottom of the inner soundproof box (504).

6. A road milling machine according to claim 2, characterized in that: The left side of the fixed rod (404) is fixedly connected to the frame body (1), and the right side of the fixed rod (404) is fixedly connected to the belt conveyor (403).

7. A road milling machine according to claim 1, characterized in that: A first locking block (801) is fixedly installed on the top of the fixing rod (404), and a second locking block (802) is fixedly installed on the left side of the dust settling box (601).

8. A road milling machine according to claim 1, characterized in that: The top of the external soundproof box (502) is provided with an movable hole (9), which is adapted to the electric hydraulic telescopic rod (508).

9. A road milling machine according to claim 3, characterized in that: The inlet of the water pump (606) is fixedly connected to the water tank (607), the outlet of the water pump (606) is fixedly connected to the hose (605), and the delivery pipe (604) is connected to the water pump (606) through the hose (605).

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