Road paving cutter

Abstract

This utility model relates to the field of cutting machine technology, and more particularly to a road paving cutting machine. It includes a base plate with rollers at its bottom, a water tank on its upper surface, a handle fixedly connected to the side wall of the water tank, an engine fixedly connected to the upper surface of the base plate, a rotating shaft rotatably connected inside the base plate, a cutting blade on the side wall of the shaft, a dust removal assembly on the upper surface of the base plate, and a disassembly / removal assembly on the side wall of the cutting blade. The dust removal assembly includes a suction box, the bottom of which is fixedly connected to the upper surface of the base plate. This utility model utilizes a dust removal assembly consisting of a protective shell, a fan, and a suction box, working in conjunction with a water spray system consisting of a water tank and nozzles. This allows for efficient adsorption and filtration of dust generated during cutting, and timely cooling of the cutting blade, achieving a dual effect of dust reduction and blade protection. This structure improves the quality of the working environment and extends the service life of the cutting blade.

Description

Technical Field

[0001] This utility model relates to the field of cutting machine technology, and more particularly to a cutting machine for road paving. Background Technology

[0002] In road construction and maintenance projects, road paving cutting machines are indispensable key equipment, mainly used for cutting asphalt, concrete, and other pavement surfaces, such as cutting expansion joints, repair grooves, and marking grooves, to ensure the stability and service life of the pavement structure. With the acceleration of urbanization and the continuous expansion of road construction, increasingly higher demands are placed on the efficiency, environmental friendliness, and equipment durability of pavement cutting operations, driving the continuous development of road paving cutting machine technology. Existing road paving cutting machines typically use an engine as a power source, driving the cutting blade to rotate at high speed through belts, gears, and other transmission mechanisms, utilizing the friction between the cutting blade and the pavement material to achieve cutting. For easy movement, the bottom is generally equipped with rollers, and the operator controls the machine's direction of travel and cutting path by pushing a handle. During the cutting process, some machines are equipped with simple water spray devices to spray water onto the cutting blade in an attempt to reduce cutting temperature and dust, but they lack dedicated dust collection and filtration structures. However, existing road paving cutting machines generate a large amount of dust during operation due to the high-speed rotation of the cutting blade and intense friction with the road surface material. This dust not only permeates the working environment, causing serious air pollution and affecting the health of operators, but also has an adverse impact on the surrounding environment. At the same time, relying solely on simple water spraying devices is insufficient to adequately cool the cutting blade. During prolonged high-intensity operation, the cutting blade is prone to accelerated wear due to continuous high temperatures, shortening its service life and increasing equipment maintenance costs and downtime. Therefore, a road paving cutting machine is proposed to solve the above problems. Summary of the Invention

[0003] To overcome the above shortcomings, this utility model provides a road paving cutting machine, which aims to improve the technical problems of serious dust pollution and easy wear of cutting blades due to high temperature during the operation of existing cutting machines.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A road paving cutting machine includes a base plate with rollers at its bottom, a water tank on its upper surface, a handle fixedly connected to the side wall of the water tank, an engine fixedly connected to the upper surface of the base plate, a rotating shaft rotatably connected inside the base plate, a cutting blade on the side wall of the rotating shaft, a dust removal assembly on the upper surface of the base plate, and a disassembly assembly on the side wall of the cutting blade. The dust removal assembly includes a suction box, the bottom of which is fixedly connected to the upper surface of the base plate, a conveying pipe fixedly connected to the side wall of the suction box, a protective shell fixedly connected to the side wall of the base plate, one end of the conveying pipe fixedly connected inside the protective shell, a fan fixedly connected to the top of the suction box, the fan's suction end located inside the suction box, a filter fixedly connected inside the suction box, and a drawer slidably connected inside the suction box.

[0006] Preferably, the above-mentioned assembly and disassembly assembly includes a fixing sleeve, the side wall of which is slidably connected to the inside of the cutting blade and the rotating shaft, a clamping plate is fixedly connected to the side wall of the fixing sleeve, the side wall of the clamping plate is slidably connected to the inside of the cutting blade, and the inside of the cutting blade is slidably connected to the side wall of the rotating shaft.

[0007] Preferably, the engine sidewall is provided with a wheel, a belt is provided between the wheels, one wheel is fixedly connected to the engine sidewall, the other wheel is fixedly connected to the shaft sidewall, a rubber block is fixedly connected to the drawer sidewall, and the rubber block sidewall is slidably connected to the inside of the dust collection box.

[0008] Preferably, a water pipe is fixedly connected to the side wall of the water tank, a valve is provided on the side wall of the water pipe, a nozzle is fixedly connected to one end of the water pipe, and the side wall of the nozzle is fixedly connected to the side wall of the protective shell.

[0009] Preferably, a rotating block is rotatably connected inside the aforementioned fixed sleeve, a threaded block is fixedly connected to one end of the rotating block, the side wall of the threaded block is threadedly connected inside the fixed sleeve, and a handle is fixedly connected to the other end of the rotating block.

[0010] Preferably, the fixed sleeve has a push block slidably connected inside, and the fixed sleeve is provided with balls.

[0011] Preferably, the aforementioned fixing sleeve is provided with a spring inside, one end of the spring is fixedly connected to the side wall of the threaded block, and the other end of the spring is fixedly connected to the side wall of the push block.

[0012] Preferably, the ball sidewall is slidably connected inside the rotating shaft, and the ball sidewall is slidably connected inside the fixed sleeve.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects:

[0014] This invention utilizes a dust removal component consisting of a protective shell, a fan, and a dust collection box, working in conjunction with a water spray system composed of a water tank and nozzles. This system efficiently adsorbs and filters dust generated during cutting, while simultaneously cooling the cutting blade. This achieves dual dust reduction and blade protection, solving the problems of severe dust pollution and blade wear due to high temperatures in existing cutting machines. The structure improves the working environment and extends the lifespan of the cutting blade. Furthermore, rotating the handle activates a disassembly and assembly component consisting of a rotating block and a threaded block, allowing for quick disassembly and installation of the cutting blade. This facilitates convenient blade replacement, overcoming the cumbersome and time-consuming process of existing blade replacement methods. The structure also enhances equipment maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the road paving cutting machine of this utility model.

[0016] Figure 2 This is a side view of the road paving cutting machine of this utility model.

[0017] Figure 3 This is a schematic diagram of the dust removal component of the road paving cutting machine of this utility model.

[0018] Figure 4 This is a schematic diagram of the cutting blade of the road paving cutting machine of this utility model.

[0019] Figure 5 This is a schematic diagram of the disassembly and assembly components of the road paving cutting machine of this utility model.

[0020] Legend:

[0021] 1. Base plate; 2. Roller; 3. Water tank; 4. Handle; 5. Engine; 6. Cutting blade; 7. Rotary wheel; 8. Belt; 9. Shaft; 10. Protective shell; 11. Water pipe; 12. Valve; 13. Nozzle; 14. Dust collection box; 15. Delivery pipe; 16. Fan; 17. Filter screen; 18. Drawer; 19. Rubber block; 20. Fixing sleeve; 21. Clamping plate; 22. Rotating block; 23. Handle; 24. Threaded block; 25. Spring; 26. Push block; 27. Ball bearing. Detailed Implementation

[0022] 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.

[0023] reference Figures 1-3The road paving cutting machine of this utility model has the following structure: a base plate 1 is used to support all components and provide stable support. Rollers 2 are provided at the bottom of the base plate 1 to drive the equipment to move and facilitate adjustment of the working position. A water tank 3 is provided on the upper surface of the base plate 1 to store cooling water and provide a water source for cutting cooling and dust suppression. A handle 4 is fixedly connected to the side wall of the water tank 3 for the operator to hold and push the equipment. An engine 5 is fixedly connected to the upper surface of the base plate 1 to provide power. A rotating shaft 9 is rotatably connected inside the base plate 1 to transmit power. A cutting blade 6 is provided on the side wall of the rotating shaft 9 to directly contact the road surface and achieve the effect of cutting the road surface. A dust removal component is provided on the upper surface of the base plate 1 to collect the dust generated during cutting and reduce dust pollution. A disassembly and assembly component is provided on the side wall of the cutting blade 6 to quickly disassemble and install the cutting blade 6 and improve the replacement efficiency.The dust collection assembly includes a dust collection box 14, whose bottom is fixedly connected to the upper surface of the base plate 1. The dust collection box 14 is used to contain and process the sucked-in dust, achieving a centralized collection effect. A conveying pipe 15 is fixedly connected to the side wall of the dust collection box 14 for conveying dust. A protective shell 10 is fixedly connected to the side wall of the base plate 1, which covers the cutting area of ​​the cutting blade 6, preventing dust from splashing and protecting the operator. One end of the conveying pipe 15 is fixedly connected inside the protective shell 10. The conveying pipe 15 works in conjunction with the protective shell 10 to convey dust, achieving the effect of quickly guiding the dust generated during cutting into the dust collection box 14. A fan 16 is fixedly connected to the top of the dust collection box 14. The fan 16 generates negative pressure to provide power for dust suction. The suction end of the fan 16 is located inside the dust collection box 14. The fan 16 works with the dust collection box 14 to create a negative pressure environment inside the dust collection box 14. A filter 17 is fixedly connected inside the dust collection box 14 to filter dust and separate it from the air. A drawer 18 is slidably connected inside the dust collection box 14 to collect the filtered dust for easy cleaning. A wheel 7 is set on the side wall of the engine 5. The wheel 7 transmits power and changes the direction of power transmission. A rubber belt 8 is installed between the 7 and the shaft 9 to transmit power. One side of the pulley 7 is fixedly connected to the side wall of the engine 5, and the other side of the pulley 7 is fixedly connected to the side wall of the shaft 9. The engine 5, in conjunction with the pulley 7 and the belt 8, transmits power to the shaft 9. A rubber block 19 is fixedly connected to the side wall of the drawer 18. The rubber block 19 enhances the connection between the drawer 18 and the dust collection box 14 and prevents dust leakage. The side wall of the rubber block 19 is slidably connected to the inside of the dust collection box 14. The rubber block 19 slides with the drawer 18, facilitating the pulling out of the drawer 18. To ensure a tight seal, a water pipe 11 is fixedly connected to the side wall of the water tank 3. The water pipe 11 transports cooling water, and a valve 12 is installed on the side wall of the water pipe 11 to control the flow and volume of the water, facilitating adjustment of cooling and dust suppression effects. A nozzle 13 is fixedly connected to one end of the water pipe 11, atomizing the cooling water and increasing the contact area with the cutting disc 6 and dust, thus enhancing cooling and dust suppression. The nozzle 13 is fixedly connected to the side wall of the protective shell 10. The nozzle 13 works in conjunction with the protective shell 10 to spray water, achieving precise water spraying in the cutting area, effectively cooling the cutting disc 6 and suppressing dust.

[0024] Reference Figures 4-5The assembly includes a fixing sleeve 20, which connects the cutting blade 6 and the rotating shaft 9, thus fixing the cutting blade 6. The side wall of the fixing sleeve 20 is slidably connected inside the cutting blade 6 and the rotating shaft 9, allowing for quick positioning and installation. A retaining plate 21 is fixedly connected to the side wall of the fixing sleeve 20, embedding itself inside the cutting blade 6 to prevent relative rotation between the cutting blade 6 and the fixing sleeve 20. The retaining plate 21 is slidably connected to the side wall of the cutting blade 6, allowing for precise locking and fixing. The cutting blade 6 is slidably connected to the side wall of the rotating shaft 9, facilitating installation and positioning. A rotating block 22 is rotatably connected inside the fixing sleeve 20, transmitting torque. A threaded block 24 is fixedly connected to one end of the rotating block 22, allowing it to move within the fixing sleeve 20. The side wall of the threaded block 24 is threadedly connected inside the fixing sleeve 20, and the threaded block 24 engages with the fixing sleeve 20. The rotating block 22 rotates in a threaded manner, achieving axial movement through rotation. A handle 23 is fixedly connected to the other end of the rotating block 22, providing a grip for the operator to easily rotate it. A push block 26 is slidably connected inside the fixed sleeve 20. Ball bearings 27 are installed inside the fixed sleeve 20 to clamp the fixed sleeve 20 and the rotating shaft 9, preventing relative sliding. A spring 25 is installed inside the fixed sleeve 20 to provide elastic force to push the push block 26. One end of the spring 25 is fixedly connected to the side wall of the threaded block 24, and the other end of the spring 25 is fixedly connected to the side wall of the push block 26. The spring 25 works with the threaded block 24 and the push block 26 to extend and retract, thereby adjusting the pushing force on the push block 26 according to the movement of the threaded block 24. The side wall of the ball bearing 27 is slidably connected to the inside of the rotating shaft 9, and the side wall of the ball bearing 27 is slidably connected to the inside of the fixed sleeve 20. The ball bearing 27 works with the rotating shaft 9 and the fixed sleeve 20 to slide, thereby achieving the effect of locking and unlocking the fixed sleeve 20 and the rotating shaft 9 by clamping and disengaging.

[0025] The working principle of this utility model is as follows: When the equipment is in operation, the engine 5 outputs power, which is transmitted to the rotating shaft 9 inside the base plate 1 through the transmission mechanism composed of the rotating wheel 7 and belt 8 on the side wall. This drives the cutting blade 6 on the side wall of the rotating shaft 9 to rotate at high speed, thereby cutting the road surface. The operator can push the equipment through the handle 4 on the side wall of the water tank 3 on the upper surface of the base plate 1 and adjust the cutting position and direction using the rollers 2 at the bottom. During the cutting process, the protective shell 10 covers the cutting area of ​​the cutting blade 6 to reduce the dust diffusion range. After the fan 16 is started, a negative pressure is formed inside the dust collection box 14. The dust generated by cutting is sucked into the dust collection box 14 through the conveying pipe 15 inside the protective shell 10. After the dust enters, it is filtered by the filter screen 17. Large particles of impurities are intercepted and fall into the sliding drawer 18. Clean air is discharged through the fan 16. The drawer 18 is easy to clean later. At the same time, the water in the water tank 3 is discharged through the water tank 14. Pipe 11 delivers water to nozzle 13. The operator can control the water volume through valve 12. The water flow is sprayed onto the cutting part of the cutting blade 6, which can both cool the cutting blade 6 and suppress dust. It forms a dual dust removal effect with the dust collection component. When the cutting blade 6 needs to be replaced, the rotating block 22 and threaded block 24 are rotated by rotating the handle 23. The threaded block 24 moves in the fixed sleeve 20. The spring 25 rebounds, causing the push block 26 to release the pressure on the ball 27, allowing it to slide out from inside the rotating shaft 9. This releases the lock between the fixed sleeve 20 and the rotating shaft 9. At this time, the fixed sleeve 20 can be pulled out from inside the cutting blade 6 and the rotating shaft 9. The retaining plate 21 on its side wall disengages from the retaining groove inside the cutting blade 6, completing the disassembly of the cutting blade 6. When installing a new cutting blade 6, the operation is reversed so that the retaining plate 21 is inserted into the cutting blade 6. The ball 27 slides into the rotating shaft 9 under the elastic force of the spring 25, realizing the quick fixation of the cutting blade 6 and ensuring the stability during the cutting process.

Claims

1. A cutting machine for road paving comprising a base plate (1), characterised in that: The bottom of the base plate (1) is provided with rollers (2), the upper surface of the base plate (1) is provided with a water tank (3), the side wall of the water tank (3) is fixedly connected with a handle (4), the upper surface of the base plate (1) is fixedly connected with an engine (5), the inside of the base plate (1) is rotatably connected with a rotating shaft (9), the side wall of the rotating shaft (9) is provided with a cutting blade (6), the upper surface of the base plate (1) is provided with a dust removal assembly, the side wall of the cutting blade (6) is provided with a disassembly assembly; the dust removal assembly includes a dust collection box (14), the bottom of the dust collection box (14) A conveying pipe (15) is fixedly connected to the upper surface of the base plate (1), and a protective shell (10) is fixedly connected to the side wall of the dust collection box (14). One end of the conveying pipe (15) is fixedly connected to the inside of the protective shell (10). A fan (16) is fixedly connected to the top of the dust collection box (14). The suction end of the fan (16) is located inside the dust collection box (14). A filter screen (17) is fixedly connected inside the dust collection box (14). A drawer (18) is slidably connected inside the dust collection box (14).

2. The road paving cutter of claim 1, wherein: The assembly and disassembly assembly includes a fixing sleeve (20), the side wall of the fixing sleeve (20) is slidably connected to the inside of the cutting blade (6) and the rotating shaft (9), the side wall of the fixing sleeve (20) is fixedly connected to a clamping plate (21), the side wall of the clamping plate (21) is slidably connected to the inside of the cutting blade (6), and the inside of the cutting blade (6) is slidably connected to the side wall of the rotating shaft (9).

3. The road paving cutter of claim 1, wherein: The engine (5) has a rotating wheel (7) on its side wall, and a belt (8) is provided between the rotating wheels (7). One rotating wheel (7) is fixedly connected to the side wall of the engine (5), and the other rotating wheel (7) is fixedly connected to the side wall of the rotating shaft (9). A rubber block (19) is fixedly connected to the side wall of the drawer (18), and the side wall of the rubber block (19) is slidably connected to the inside of the dust collection box (14).

4. The road paving cutter of claim 1, wherein: A water pipe (11) is fixedly connected to the side wall of the water tank (3). A valve (12) is provided on the side wall of the water pipe (11). A nozzle (13) is fixedly connected to one end of the water pipe (11). The side wall of the nozzle (13) is fixedly connected to the side wall of the protective shell (10).

5. The road paving cutter of claim 2, wherein: The fixed sleeve (20) is rotatably connected to a rotating block (22). One end of the rotating block (22) is fixedly connected to a threaded block (24). The side wall of the threaded block (24) is threadedly connected to the inside of the fixed sleeve (20). The other end of the rotating block (22) is fixedly connected to a handle (23).

6. The road paving cutter of claim 5, wherein: The fixed sleeve (20) is slidably connected to a push block (26), and a ball bearing (27) is provided inside the fixed sleeve (20).

7. The road paving cutter of claim 5 or 6, wherein: The fixed sleeve (20) is provided with a spring (25). One end of the spring (25) is fixedly connected to the side wall of the threaded block (24), and the other end of the spring (25) is fixedly connected to the side wall of the push block (26).

8. The road paving cutter of claim 6, wherein: The sidewall of the ball (27) is slidably connected inside the rotating shaft (9), and the sidewall of the ball (27) is slidably connected inside the fixed sleeve (20).

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