Cold milling method for asphalt pavement in arid desert region
By setting up a collection and cleaning mechanism and laser monitoring device on the milling machine, the rapid collection of residues and effective control of dust during the asphalt pavement milling process in arid desert areas is achieved, which solves the problems of large labor consumption and dust, and improves the milling efficiency and safety.
Patent Information
- Application Number
- CN202510583986.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-08-01
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the milling process of asphalt pavement in arid desert areas, cleaning the residue after milling requires a lot of manpower, and dust affects the health of the staff.
The collection and cleaning mechanism is adopted, including dust collection box, hydraulic rod, cleaning brush and push plate, and other components, to quickly collect and process the milled residue and dust through mechanization, reduce manual cleaning, and add laser or visual monitoring devices to ensure the flatness of the milling surface.
It improves milling efficiency, reduces manpower consumption, reduces dust, and ensures the safety and production efficiency of the working environment.
Smart Images
Figure CN120401331A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cold milling of asphalt pavements, and particularly to a method for cold milling of asphalt pavements in arid desert areas. Background Art
[0002] The road milling machine is one of the main types of machinery for asphalt pavement maintenance construction and one of the main equipment for asphalt concrete pavement maintenance construction. It is mainly used for the excavation and renovation of the asphalt concrete surface layer of highways, urban roads, airports, freight yards, etc., and can also be used to remove defects such as pavement bumps, oil waves, reticulations, ruts, etc. It can also be used to excavate pavement potholes and trenches, as well as the roughening of cement pavements and the milling of surface layer stepped joints.
[0003] When the road milling machine mills the road surface flat, there will be residues after milling. And during the slag cleaning process after asphalt pavement milling, a large amount of manpower needs to be equipped to follow up and clean. The whole process consumes a large amount of manpower, and the climatic conditions in arid desert areas will cause a lot of dust during the slag cleaning process and the road milling process. When the dust enters the mouths and noses of the staff, it will have an adverse impact on the physical health of the staff. Therefore, this application provides a method for cold milling of asphalt pavements in arid desert areas to meet the needs. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to provide a method for cold milling of asphalt pavements in arid desert areas. By setting up a collection and cleaning mechanism, not only can the aging pavement be removed more quickly and effectively by using cold milling technology, providing sufficient raw materials for the subsequent production of recycled asphalt mixture and improving production efficiency, but also the residues after road milling can be quickly collected and processed by using the collection and cleaning mechanism. Through the above settings, the problem that a large amount of manpower is consumed in the existing road milling residue cleaning can be solved.
[0005] To solve the above technical problem, the present invention provides the following technical solutions:
[0006] A method for cold milling of asphalt pavements in arid desert areas includes the following steps.
[0007] Step 1: First, park the milling machine at the starting position, straighten the direction, and then adjust the discharge port according to the height of the dump truck carriage.
[0008] Step 2: Then start the milling machine. The technician operates the milling depth control instrument to adjust to the designed depth, and then start the milling machine to start the milling operation. The milling speed is adjusted according to the road surface conditions and equipment performance. At the same time, the staff directs the dump truck to receive the milled material in front of the milling machine, and a special person directs the movement of the vehicle to avoid collisions. The segmented milling method is adopted to form a single milling, avoiding leaving corners or poor connection of the two milling interfaces.
[0009] Step 3: During the milling process, a water truck adds water to the milling machine to reduce dust, and for the milled materials that are not transported onto the dump truck, manual cleaning is carried out.
[0010] Step 4: After construction, transport the milled materials to the designated stockpiling yard. The stockpiling yard should be leveled, compacted, and drainage facilities should be provided. According to needs, the milled materials are stored separately or mixed with other materials for treatment.
[0011] Step 5: Clean up the remaining milled materials and sundries in the construction area, restore the cleanliness of the road, and conduct daily maintenance on the milling machine. Clean the residues on the equipment, check and replace worn parts.
[0012] The milling machine includes a main body of the milling device. A dust collection box is installed on the top of the main body of the milling device. A first guard plate is installed at the bottom of the main body of the milling device. Milling cutters are installed on the main body of the milling device near the first guard plate. A second guard plate is installed at the bottom of the dust collection box. A discharge port baffle is rotatably connected to the outer wall of one side of the dust collection box. A first hydraulic rod body is installed on the outer wall of the other side of the dust collection box.
[0013] A collection and cleaning mechanism is used to collect the residues and dust after milling. The collection and cleaning mechanism is connected to the main body of the milling device.
[0014] Optionally, a dust suction port is opened at the bottom of the main body of the milling device. A channel is opened inside the main body of the milling device near the dust suction port. A dust collection chamber is opened inside the dust collection box. A magnet is provided at the bottom of the dust collection box near the discharge port baffle. Another magnet is provided at the bottom of the discharge port baffle. The bottom of the dust collection box near one side of the discharge port baffle is rotatably connected to the bottom plate of the main body of the milling device.
[0015] Optionally, the collection and cleaning mechanism includes a second hydraulic rod body installed at the bottom of the main body of the milling device. A first connecting rope is fixedly connected to the bottom of the second hydraulic rod body. A first guiding rod is fixedly connected to the inner wall of the second guard plate. A first movable block is fixedly connected to the bottom of the first connecting rope. A first connecting framework is fixedly connected to the bottom of the first movable block. A motor body is installed inside the first connecting framework. An output end of the motor body is fixedly connected to a cleaning brush body.
[0016] Optionally, a second connecting framework is installed between the two first movable blocks. The second connecting framework is made of plastic material and has an arc-shaped structure protruding towards the bottom of the main body of the milling device.
[0017] Optionally, first lightweight slots are equidistantly formed in the second connecting framework, and a weakening portion is formed in the middle of the second connecting framework.
[0018] Optionally, reinforcing wires adapted to the shape of the second connecting framework are equidistantly installed at the top of the second connecting framework, and the reinforcing wires are made of iron wire.
[0019] Optionally, a second guiding rod is fixedly connected to the bottom of the milling device main body near one side of the second hydraulic rod main body. A second movable block is installed on the second guiding rod. One side of the second movable block is fixedly connected to a spring body. The bottom of the second movable block is fixedly connected to a pushing plate, and the bottom of the second movable block is fixedly connected to a second connecting rope.
[0020] Optionally, the pushing plate is made of stainless steel, and second lightweight slots are equidistantly formed at the top of the pushing plate.
[0021] Optionally, first rolling slots are formed at both the top and the bottom of the first guiding rod, and first rolling blocks adapted to the shape of the first rolling slots are rotatably connected to both the top and the bottom of the first movable block through rotating shafts.
[0022] Optionally, a second rolling block is rotatably connected to the second movable block through a rotating shaft, and a second rolling slot adapted to the shape of the second rolling block is formed at the top of the second guiding rod.
[0023] Compared with the prior art, the present invention has at least the following beneficial effects:
[0024] In the above solution, by setting up a collection and cleaning mechanism, not only can the aging road surface be removed more quickly and effectively by using the cold milling technology, providing sufficient raw materials for the subsequent production of recycled asphalt mixture and improving the production efficiency, but also the residues after road milling can be quickly collected and processed by the collection and cleaning mechanism. The residues and dust are collected from the dust suction port into the dust collection box. When the residues in the dust collection box are almost full, the first hydraulic rod body is started to make a telescopic movement. The first hydraulic rod body raises the side of the dust collection box away from the discharge port baffle, and the residues collected in the dust collection box are poured towards the discharge port baffle. The discharge port baffle is opened under the action of gravity, so that the residues collected in the dust collection box are quickly poured out. The residues are poured on the un-milled road surface, so that the milling device main body can collect the residues into the residue collection vehicle together when milling the un-milled road surface, thereby improving the recycling efficiency of the entire road surface. Moreover, there is no need for manual cleaning of residues during the milling process, thus greatly reducing the labor consumption. And by adding a combined monitoring device of laser or vision at the milling cutter head, real-time tracking monitoring of the integrity parameters such as the arc degree of the cutter head is carried out to avoid the situation of uneven milling surface or deep grooves during the milling process. By adding cutting wheels before and after the milling machine, the overall milling efficiency is improved.
[0025] By providing a first connecting rope, a first movable block and a second connecting framework in the collection and cleaning mechanism, not only can the second hydraulic rod body drive the first movable block connected thereto through the first connecting rope to move along the first guide rod, and by using the second connecting framework, the first movable block can return to its original position when not affected by the second hydraulic rod body, and further the position of the cleaning brush body connected to the bottom of the first movable block through the first connecting framework and the motor body can be adjusted, so that the cleaning range of the cleaning brush body is larger, reducing the cleaning dead angle at the bottom of the vehicle, thus making the road surface residues and dust cleaner. And the combined use of the structures effectively makes the use effect of the collection and cleaning mechanism better, and the structure is simple and convenient to use.
[0026] By providing a push plate and a second lightening groove in the collection and cleaning mechanism, not only can the residue shoveled by the bottom of the push plate be pushed towards the bottom of the milling cutter inside the first guard plate when the push plate at the bottom of the second movable block moves towards the first guard plate, so that the milling cutter can recycle this part of the residue together with the recycled road surface into the collection vehicle, but also by using the telescopic movement of the second hydraulic rod body, the push plate can move back and forth along the second guide rod, making the residue pushed by the bottom of the push plate into small piles and intermittently pushing the residue towards the bottom of the first guard plate, thus ensuring the working efficiency of milling. At the same time, after the push plate processes most of the residue, the cleaning brush body then cleans the road surface. Since most of the residue and dust on the road surface have been pushed by the push plate to the bottom of the first guard plate for treatment and collection, there is less residual dust on the road surface when the cleaning brush body is cleaning. With the protection of the second guard plate, only a small amount of dust will be generated during the cleaning process, thus achieving an effective dust reduction effect. Moreover, the second lightening groove reduces the weight of the push plate, and the second lightening groove also allows the dust to pass through it when the push plate shovels the residue, and the dust suction mechanism in the dust collection box sucks the dust from the dust suction port into the collection cavity in the dust collection box. The combined use of the structures effectively makes the collection and cleaning mechanism have a better use effect, and the structure is simple and easy to use.
[0027] By providing a second guide rod, a second movable block and a second connecting rope in the collection and cleaning mechanism, not only can the second hydraulic rod body be extended, the second hydraulic rod body pulls the second connecting rope, making the angle between the second connecting rope and the bottom of the dust collection box larger, and the second movable block moves along the second guide rod towards the second hydraulic rod body, and the spring body is stretched under force. When the second hydraulic rod body makes a shortening movement, the spring body rebounds and pulls the second movable block towards the first guard plate, so that the push plate at the bottom of the second movable block moves towards the first guard plate, and then the residue shoveled by the bottom of the push plate can be indirectly pushed towards the bottom of the milling cutter inside the first guard plate, so that the milling cutter can recycle this part of the residue together with the recycled road surface into the collection vehicle, and the combined use of the structures effectively makes the collection and cleaning mechanism have a better use effect, and the structure is simple and easy to use.
[0028] In summary, this device can not only collect and process the residue after milling twice through the combined use of the collection and cleaning mechanism and its various components, but also generate less dust during the collection and processing process, effectively saving a large amount of manpower. Moreover, the structure of this device is simple, convenient and fast to use, the production cost of the device is low, and the practicability is good, which is convenient for popularization and use. Brief Description of the Drawings
[0029] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.
[0030] Figure 1 Schematic three-dimensional structure diagram of a cold milling device for asphalt pavement in arid desert areas;
[0031] Figure 2 Schematic three-dimensional sectional structure diagram of a milling device for asphalt pavement in arid desert areas;
[0032] Figure 3 For Figure 2 Enlarged structure diagram at position A in
[0033] Figure 4 Schematic enlarged three-dimensional structure diagram of the cooperation between the first guard plate and the second guard plate;
[0034] Figure 5 Schematic enlarged three-dimensional structure diagram of the cooperation between the second guide rod and the push plate;
[0035] Figure 6 For Figure 5 Enlarged structure diagram at position B in
[0036] Figure 7 Schematic enlarged three-dimensional structure diagram of the cooperation between the second hydraulic rod body and the first guide rod;
[0037] Figure 8 For Figure 7 Enlarged structure diagram at position C in
[0038] Figure 9 Schematic enlarged structure diagram of the cooperation between the second hydraulic rod body and the first guide rod.
[0039] Reference numerals:
[0040] 1. Milling device main body; 2. Dust collection box; 3. First guard plate; 4. Second guard plate; 5. Discharge port baffle; 6. First hydraulic rod body; 7. Dust suction port; 8. Second hydraulic rod body; 9. First connecting rope; 10. First guide rod; 11. First movable block; 12. First connecting skeleton; 13. Motor body; 14. Cleaning brush body; 15. Second connecting skeleton; 16. First lightweight groove; 17. Reinforcing wire; 18. Weakening part; 19. Second guide rod; 20. Second movable block; 21. Spring body; 22. Push plate; 23. Second lightweight groove; 24. Second connecting rope; 25. First rolling block; 26. First rolling groove; 27. Second rolling block.
[0041] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device, and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed Description of the Invention
[0042] The following describes in detail a cold milling method for asphalt pavement in arid desert areas provided by the present invention with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.
[0043] It should be noted that when referring to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. in the specification, it is indicated that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe specific features, structures, or characteristics, it should be within the knowledge of those skilled in the relevant art to implement such features, structures, or characteristics in combination with other embodiments whether or not they are explicitly described.
[0044] Generally, terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that may not be explicitly described.
[0045] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.
[0046] In addition, spatial relative terms such as "under", "below", "lower part", "above", "upper part", etc. may be used in this text for convenience of description to describe the relationship between one element or feature and another or more elements or features, as shown in the accompanying drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptive terms used in this text may be similarly interpreted accordingly.
[0047] As Figures 1 to 3 shown, an embodiment of the present invention provides a cold milling method for asphalt pavement in arid desert areas, including the following steps:
[0048] Step 1: First, park the milling machine at the starting position, straighten the direction, and then adjust the discharge port according to the height of the dump truck carriage.
[0049] Step 2: Then start the milling machine. The technician operates the milling depth control instrument to adjust to the designed depth, and then start the milling machine to start the milling operation. The milling speed is adjusted according to the road surface condition and equipment performance. At the same time, the staff directs the dump truck to receive the milled material in front of the milling machine, and a special person directs the movement of the vehicle to avoid collision. The segmented milling method is adopted to form a single milling, avoiding leaving corners or poor connection of the two milling interfaces.
[0050] Step 3: During the milling process, the water truck adds water to the milling machine to reduce dust, and for the milled material that has not been transported onto the dump truck, manual cleaning is carried out.
[0051] Step 4: After construction, transport the milled material to the designated stockpile yard. The stockpile yard should be leveled, compacted, and drainage facilities should be provided. According to needs, the milled material is stored separately or mixed with other materials for treatment.
[0052] Step 5: Clean the remaining milled material and sundries in the construction area, restore the cleanliness of the road, and perform daily maintenance on the milling machine, clean the residues on the equipment, and check and replace the worn parts.
[0053] The milling machine includes a milling device main body 1. A dust collection box 2 is installed on the top of the milling device main body 1. A first guard plate 3 is installed at the bottom of the milling device main body 1. Milling cutters are installed near the first guard plate 3 of the milling device main body 1. A second guard plate 4 is installed at the bottom of the dust collection box 2. A discharge port baffle 5 is rotatably connected to the outer wall of one side of the dust collection box 2. A first hydraulic rod body 6 is installed on the outer wall of the other side of the dust collection box 2.
[0054] The collection and cleaning mechanism is used to collect the residues and dust after milling. The collection and cleaning mechanism is connected to the main body 1 of the milling device. A dust suction port 7 is opened at the bottom of the main body 1 of the milling device. A channel is opened inside one side of the main body 1 of the milling device near the dust suction port 7. A dust collection chamber is opened inside the dust collection box 2. A magnet is provided at the bottom of the dust collection box 2 near the discharge port baffle 5. Another magnet is provided at the bottom of the discharge port baffle 5. One side of the bottom of the dust collection box 2 near the discharge port baffle 5 is rotatably connected to the bottom plate of the main body 1 of the milling device. A dust suction mechanism is provided inside the dust collection box 2. The main body 1 of the milling device, the dust collection box 2 and the dust suction mechanism are all existing mature technologies. Therefore, their working principles and specific structures will not be elaborated here. By using the cold milling technology, this device can more quickly and effectively remove the aged road surface, provide sufficient raw materials for the subsequent production of recycled asphalt mixture, improve production efficiency, and use the collection and cleaning mechanism to quickly collect and process the residues after road milling, collect the residues and dust from the dust suction port 7 into the dust collection box 2. When the residues in the dust collection box 2 are almost full, start the first hydraulic rod body 6 to make the first hydraulic rod body 6 perform telescopic motion. The first hydraulic rod body 6 is an existing production technology. Its working principle and specific structure will not be elaborated here. The first hydraulic rod body 6 raises the side of the dust collection box 2 away from the discharge port baffle 5. The residues collected in the dust collection box 2 are poured towards the discharge port baffle 5. The discharge port baffle 5 is opened under the action of gravity, so that the residues collected in the dust collection box 2 can be quickly poured out. The residues are poured on the un-milled road surface, so that when the main body 1 of the milling device mills the un-milled road surface, the residues can be collected into the residue collection vehicle together, thereby improving the recycling efficiency of the entire road surface. And there is no need for manual cleaning of the residues during the milling process, thus greatly reducing the labor consumption. And by adding a combined monitoring device of laser or vision at the milling cutter head, real-time tracking monitoring is carried out on the integrity parameters such as the arc degree of the cutter head, to avoid the situation of uneven milling surface or deep grooves during the milling process. By adding cutting wheels before and after the milling machine, the overall milling efficiency is improved. The above combined monitoring of laser or vision and the cutting wheels are existing mature technologies. Their working principles and specific structures will not be elaborated here.
[0055] Such as Figures 4 to 9As shown, the collection and cleaning mechanism includes a second hydraulic rod body 8 installed at the bottom of the milling device main body 1. A first connecting rope 9 is fixedly connected to the bottom of the second hydraulic rod body 8. A first guide rod 10 is fixedly connected to the inner wall of the second guard plate 4. The bottom of the first connecting rope 9 is fixedly connected to a first movable block 11. A first connecting skeleton 12 is fixedly connected to the bottom of the first movable block 11. A motor body 13 is installed in the first connecting skeleton 12. The output end of the motor body 13 is fixedly connected to a cleaning brush body 14. A second connecting skeleton 15 is installed between the two first movable blocks 11. The second connecting skeleton 15 is made of plastic material and is an arc-shaped structure protruding towards the bottom of the milling device main body 1. The first connecting rope 9 is made of steel wire material. The first guard plate 3 is used to protect both sides of the milling cutter installed at the bottom of the milling device main body 1 to prevent danger caused by flying gravel during the road milling process. The second guard plate 4 is used to protect the cleaning brush body 14 and reduce the dispersion range of dust when the cleaning brush body 14 is cleaning. The cross-section of the second guard plate 4 is concave, and its opening faces the side of the first guard plate 3. Both ends of the first guide rod 10 are fixedly connected to the inner walls on both sides of the second guard plate 4. By starting the second hydraulic rod body 8, the second hydraulic rod body 8 is shortened, and the position of the end of the second hydraulic rod body 8 changes. The top of the first connecting rope 9 is fixedly connected to the bottom end of the second hydraulic rod body 8. Under the action of the second hydraulic rod body 8, the angle between the first connecting rope 9 and the first guide rod 10 becomes larger, so that the first connecting rope 9 pulls the two first movable blocks 11 to move along the first guide rod 10 in a mutually approaching trend. The second connecting skeleton 15 between the two first movable blocks 11 is stressed and undergoes a bending deformation. When the second hydraulic rod body 8 extends and moves, the second connecting skeleton 15 rebounds, causing the two first movable blocks 11 to move in a mutually separating trend, making the angle between the first connecting rope 9 and the first guide rod 10 smaller. Furthermore, the position of the cleaning brush body 14 connected to the bottom of the first movable block 11 through the first connecting skeleton 12 and the motor body 13 can be adjusted, so that the cleaning range of the cleaning brush body 14 is larger, reducing the cleaning dead angle under the vehicle, and thus making the road residues and dust cleaner. When using the cleaning brush body 14 to clean the ground, the motor body 13 installed in the first connecting skeleton 12 drives the cleaning brush body 14 to rotate. The motor body 13 is an existing mature technology, and its working principle will not be elaborated too much. And the above structure is relatively simple, and the cooperation between the structures further makes the use effect of the device better.
[0056] Furthermore, first lightweight grooves 16 are equidistantly formed on the second connecting skeleton 15, which reduces the weight of the second connecting skeleton 15 and enables the second connecting skeleton 15 to be more easily deformed under the action of an external force. A weakening portion 18 is formed in the middle of the second connecting skeleton 15, so that the second connecting skeleton 15 is first bent and deformed from the weakening portion 18 under the action of an external force. Reinforcing wires 17 adapted to the shape of the second connecting skeleton 15 are equidistantly installed on the top of the second connecting skeleton 15. The reinforcing wires 17 are made of iron wire. The combined use of the second connecting skeleton 15 and the reinforcing wires 17 makes the structural toughness of the second connecting skeleton 15 better, preventing the second connecting skeleton 15 from being excessively deformed and fractured after multiple bends. First rolling grooves 26 are formed at both the top and the bottom of the first guide rod 10. First rolling blocks 25 adapted to the shape of the first rolling grooves 26 are rotatably connected to both the top and the bottom of the first movable block 11 through rotating shafts. By using the cooperation of the first rolling blocks 25 and the first rolling grooves 26, when the first movable block 11 moves on the first guide rod 10, rolling friction is generated between the first movable block 11 and the first guide rod 10. The frictional force of rolling friction is relatively small, so that the first movable block 11 can move more smoothly along the first guide rod 10, and the above structure is relatively simple with low production cost.
[0057] Such as Figures 4 to 9As shown in the figure, a second guide rod 19 is fixedly connected to one side of the bottom of the milling device main body 1 close to the second hydraulic rod main body 8. A second movable block 20 is installed on the second guide rod 19. One side of the second movable block 20 is fixedly connected to a spring main body 21. The bottom of the second movable block 20 is fixedly connected to a push plate 22. The bottom of the second movable block 20 is fixedly connected to a second connecting rope 24. The two ends of the top of the second guide rod 19 are fixed to the bottom of the milling device main body 1. The side of the spring main body 21 away from the second movable block 20 is fixed to the bottom of the milling device main body 1. The second connecting rope 24 is made of steel wire. The end of the second connecting rope 24 away from the second movable block 20 is fixed to the bottom end of the second hydraulic rod main body 8. By extending the second hydraulic rod main body 8, the second hydraulic rod main body 8 pulls the second connecting rope 24, making the angle between the second connecting rope 24 and the bottom of the dust collection box 2 larger. The second movable block 20 moves along the second guide rod 19 towards the second hydraulic rod main body 8, and the spring main body 21 is stretched under force. When the second hydraulic rod main body 8 shortens, the spring main body 21 rebounds and pulls the second movable block 20 towards the first guard plate 3, so that the push plate 22 at the bottom of the second movable block 20 moves towards the first guard plate 3. Furthermore, the residue shoveled by the bottom of the push plate 22 can be pushed to the bottom of the milling cutter inside the first guard plate 3, so that the milling cutter can recycle this part of the residue together with the recycled road surface into the collection vehicle. And by using the telescopic movement of the second hydraulic rod main body 8, the push plate 22 makes a reciprocating movement along the second guide rod 19, so that the residue pushed by the bottom of the push plate 22 forms small piles, and the residue is pushed to the bottom of the first guard plate 3 at intervals, thus ensuring the working efficiency of milling. At the same time, after the push plate 22 processes most of the residue, the cleaning brush main body 14 cleans the road surface. Since most of the residue and dust on the road surface have been pushed to the bottom of the first guard plate 3 for treatment and collection by the push plate 22, when the cleaning brush main body 14 cleans, there is less residual dust on the road surface. With the protection of the second guard plate 4, only a small amount of dust is generated during the cleaning process, thus achieving an effective dust reduction effect. And the above structure is relatively simple, and the cooperation between the structures makes the use effect of the collection and cleaning mechanism better.
[0058] Furthermore, the pushing plate 22 is made of stainless steel, which has better stability. The top of the pushing plate 22 is equidistantly provided with second lightening grooves 23, reducing the weight of the pushing plate 22. And when the pushing plate 22 shovels the residue, the dust can pass through the second lightening grooves 23 and be sucked into the collection chamber in the dust collection box 2 by the dust suction mechanism in the dust collection box 2 from the dust suction port 7. A second rolling block 27 is rotatably connected to the second movable block 20 through a rotating shaft. The top of the second guide rod 19 is provided with a second rolling groove adapted to the shape of the second rolling block 27. By using the cooperation of the second rolling block 27 and the second rolling groove, when the second movable block 20 moves on the second guide rod 19, rolling friction is generated between the second guide rod 19 and the second movable block 20. The frictional force of rolling friction is smaller, so that the second movable block 20 can move more smoothly along the second guide rod 19. And the above structure is relatively simple, and the cooperation between the structures further makes the use effect of the device better.
[0059] The working principle of the technical solution provided by the present invention is as follows:
[0060] During use, first, conduct in-depth research on the road surface structure of the arid desert area road, and study key parameters such as the erosion degree of the road surface by wind and sand, the road surface structure strength, the road surface driving quality, the road surface rut depth, the road surface damage degree, and the road surface anti-skid performance. By comprehensively evaluating these parameters, accurately determine the thickness of the road surface layer that needs to be removed. After determining the thickness of the road surface layer to be removed, according to this thickness and the specific working conditions of the road surface, design a cutting wheel device with appropriate front and rear design parameters for the milling machine, and add a cutting process before and after milling to improve the efficiency of road surface asphalt milling. The cutting wheel is an existing mature technology, and its working principle and specific structure will not be elaborated here too much. During the milling process, with the help of sensor technology, the particle size of the asphalt mixture and the force received by the milling machine are monitored in real time. Through intelligent control technology, accessing the sensor data, key parameters such as the milling speed, rotation speed, and the tool spacing of the milling drum can be optimized in real time according to the sensor monitoring data to ensure the smooth progress of the milling process. During the milling process, the first guard plate 3 is used to protect both sides of the milling cutter installed at the bottom of the milling device main body 1 to prevent danger caused by flying gravel during the road surface milling process. The second guard plate 4 is used to protect the cleaning brush body 14 to reduce the dust dispersion range when the cleaning brush body 14 is cleaning.
[0061] By activating the second hydraulic rod body 8, the second hydraulic rod body 8 is shortened, and the position of the end of the second hydraulic rod body 8 changes. The top of the first connecting rope 9 is fixed to the bottom end of the second hydraulic rod body 8. Under the action of the second hydraulic rod body 8, the angle between the first connecting rope 9 and the first guide rod 10 becomes larger, so that the first connecting rope 9 pulls the two first movable blocks 11 to move along the first guide rod 10 in a trend of approaching each other. The second connecting skeleton 15 between the two first movable blocks 11 is stressed and undergoes bending deformation. When the second hydraulic rod body 8 extends and moves, the second connecting skeleton 15 rebounds, causing the two first movable blocks 11 to move in a trend of moving away from each other, making the angle between the first connecting rope 9 and the first guide rod 10 smaller. Furthermore, the position of the cleaning brush body 14 connected to the bottom of the first movable block 11 through the first connecting skeleton 12 and the motor body 13 can be adjusted, so that the cleaning range of the cleaning brush body 14 is larger, reducing the cleaning dead angle at the bottom of the vehicle, making the road surface residues and dust cleaner. And during the movement of the first movable block 11, by using the cooperation of the first rolling block 25 and the first rolling groove 26, when the first movable block 11 moves on the first guide rod 10, rolling friction is generated between the first movable block 11 and the first guide rod 10. The friction force of rolling friction is smaller, so that the first movable block 11 can move more smoothly along the first guide rod 10. And when the second hydraulic rod body 8 extends, the second hydraulic rod body 8 pulls the second connecting rope 24, making the angle between the second connecting rope 24 and the bottom of the dust collection box 2 larger. The second movable block 20 moves along the second guide rod 19 in a direction closer to the second hydraulic rod body 8, and the spring body 21 is stressed and extends. When the second hydraulic rod body 8 makes a shortening movement, the spring body 21 rebounds and pulls the second movable block 20 to move in a direction closer to the first guard plate 3, so that the push plate 22 at the bottom of the second movable block 20 moves in the direction of the first guard plate 3. Furthermore, the residues shoveled by the bottom of the push plate 22 can be pushed to the bottom of the milling cutter inside the first guard plate 3, so that the milling cutter can recycle the residues in this part together with the recycled road surface into the collection vehicle. And by using the telescopic movement of the second hydraulic rod body 8, the push plate 22 makes a reciprocating movement along the second guide rod 19, which can make the residues pushed by the bottom of the push plate 22 form small piles and push the residues to the bottom of the first guard plate 3 at intervals, thus ensuring the working efficiency of milling. At the same time, after the push plate 22 processes most of the residues, the cleaning brush body 14 cleans the road surface. Since most of the residues and dust on the road surface have been pushed by the push plate 22 to the bottom of the first guard plate 3 for treatment and collection, when the cleaning brush body 14 cleans, there is less residual dust on the road surface. With the protection of the second guard plate 4, only a small amount of dust is generated during the cleaning process, thus achieving an effective dust reduction effect. And the top of the push plate 22 is equidistantly provided with second lightweight grooves 23, reducing the weight of the push plate 22, and when the push plate 22 shovels residues, the dust can pass through the second lightweight grooves 23.It is sucked into the collection cavity in the dust collection box 2 from the dust suction port 7 by the dust suction mechanism in the dust collection box 2. A second rolling block 27 is rotatably connected to the second movable block 20 through a rotating shaft. A second rolling groove adapted to the shape of the second rolling block 27 is formed at the top of the second guide rod 19. By using the cooperation of the second rolling block 27 and the second rolling groove, when the second movable block 20 moves on the second guide rod 19, rolling friction is generated between the second guide rod 19 and the second movable block 20. The frictional force of rolling friction is relatively small, so that the second movable block 20 can move more smoothly along the second guide rod 19, and the above structure is relatively simple. The cooperation between the structures further makes the use effect of the device better.
[0062] The present invention covers any substitutions, modifications, equivalent methods and solutions made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.
[0063] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.
Claims
1. A cold milling method for asphalt pavement in arid desert areas, characterized in that, It includes the following steps: Step 1: First, park the milling machine at the starting position, and then adjust the discharge port according to the height of the dump truck carriage. Step 2: Then start the milling machine. The technician operates the milling depth control instrument to adjust to the designed depth, and then start the milling machine. The milling speed is adjusted according to the road surface condition and equipment performance. At the same time, the dump truck receives the milled material in front of the milling machine, and a special person commands the movement of the vehicle to avoid collision. The segmented milling method is adopted to complete the milling in one pass. Step 3: During the milling process, the water truck adds water to the milling machine to reduce dust, and for the milled material that has not been transported onto the dump truck, manual cleaning is carried out. Step 4: After construction, transport the milled material to the designated stockpile yard, and store the milled material classified or mix it with other materials for treatment. Step 5: Clean the remaining milled material and sundries in the construction area, restore the cleanliness of the road, and clean the residues on the equipment, check and replace the worn parts. The milling machine includes a main body of the milling device. A dust collection box is installed at the top of the main body of the milling device. A first guard plate is installed at the bottom of the main body of the milling device. Milling cutters are installed at the main body of the milling device near the first guard plate. A second guard plate is installed at the bottom of the dust collection box. A discharge port baffle is rotatably connected to the outer wall of one side of the dust collection box. A first hydraulic rod body is installed on the outer wall of the other side of the dust collection box. A collection and cleaning mechanism is used to collect the residues and dust after milling, and the collection and cleaning mechanism is connected to the main body of the milling device.
2. The cold milling method for asphalt pavement in arid desert areas according to claim 1, characterized in that A dust suction port is opened at the bottom of the main body of the milling device. A channel is opened inside the main body of the milling device near the dust suction port. A dust collection chamber is opened in the dust collection box. A magnet is provided at the bottom of the dust collection box near the discharge port baffle. Another magnet is provided at the bottom of the discharge port baffle. The bottom of the dust collection box near one side of the discharge port baffle is rotatably connected to the bottom plate of the main body of the milling device.
3. The cold milling method for asphalt pavement in arid desert areas according to claim 1, characterized in that, The collection and cleaning mechanism includes a second hydraulic rod body installed at the bottom of the main body of the milling device. A first connecting rope is fixedly connected to the bottom of the second hydraulic rod body. A first guiding rod is fixedly connected to the inner wall of the second guard plate. The bottom of the first connecting rope is fixedly connected to a first movable block. A first connecting frame is fixedly connected to the bottom of the first movable block. A motor body is installed inside the first connecting frame. The output end of the motor body is fixedly connected to a cleaning brush body.
4. The cold milling method for asphalt pavement in arid desert areas according to claim 3, characterized in that A second connecting frame is installed between the two first movable blocks. The second connecting frame is made of plastic material and is an arc-shaped structure protruding towards the bottom of the main body of the milling device.
5. The cold milling method for asphalt pavement in arid desert areas according to claim 4, characterized in that A first lightweight groove is equidistantly opened on the second connecting frame, and a weakening part is opened in the middle of the second connecting frame.
6. The cold milling method for asphalt pavement in arid desert areas according to claim 4, characterized in that, Reinforcing wires adapted to the shape of the second connecting frame are equidistantly installed on the top of the second connecting frame. The reinforcing wires are made of iron wire.
7. The cold milling method for asphalt pavement in arid desert areas according to claim 3, characterized in that, One side of the bottom of the milling device main body close to the second hydraulic rod body is fixedly connected with a second guide rod, a second movable block is installed on the second guide rod, one side of the second movable block is fixedly connected with a spring body, the bottom of the second movable block is fixedly connected with a push plate, and the bottom of the second movable block is fixedly connected with a second connecting rope.
8. The cold milling method for asphalt pavement in arid desert areas according to claim 7, characterized in that, The push plate is made of stainless steel, and second lightweight grooves are equidistantly arranged at the top of the push plate.
9. The cold milling method for asphalt pavement in arid desert areas according to claim 3, characterized in that, First rolling grooves are arranged at both the top and the bottom of the first guide rod, and first rolling blocks which are rotationally connected through rotating shafts at both the top and the bottom of the first movable block and are adapted to the shapes of the first rolling grooves are provided.
10. The cold milling method for asphalt pavement in arid desert areas according to claim 7, characterized in that, A second rolling block is rotationally connected to the second movable block through a rotating shaft, and a second rolling groove which is adapted to the shape of the second rolling block is arranged at the top of the second guide rod.