Road cutting device

Abstract

This utility model discloses a road surface cutting device, including a movable frame and a cutting mechanism for cutting the road surface. The cutting mechanism includes a connecting component mounted on the frame, a drive shaft assembly rotatably mounted on the connecting component, a cutting component detachably mounted on the drive shaft assembly, and a drive component that is connected to the drive shaft assembly and drives the cutting mechanism to rotate. At least two cutting components are provided along the axial direction of the drive shaft assembly, and the spacing between adjacent cutting components is adjustable. This road surface cutting device, by setting detachable and adjustable-spacing cutting components, can not only perform single-line cutting of the road surface but also complete multiple road surface cutting tasks at once, reducing repetitive work time, effectively reducing labor intensity, and significantly improving work efficiency. Furthermore, this utility model allows for adjustment of the road surface cut width by adjusting the spacing of the cutting components to adapt to different construction needs, making operation simple and quick.

Description

Technical Field

[0001] This utility model relates to the field of road construction technology, and in particular, to a road surface cutting device. Background Technology

[0002] In municipal road construction projects, road surfaces need to be cut to facilitate subsequent construction. Road surface cutting machines are widely used for cutting road expansion joints or repairing asphalt. However, current road surface cutting machines are heavy, making them inconvenient for workers to operate, and it is difficult to adjust the cutting depth. Furthermore, workers often experience fatigue from prolonged work, which significantly reduces the effectiveness of road surface cutting.

[0003] Chinese patent CN217733707U discloses a road surface cutting device for municipal road construction, including a support plate, a fixed seat on the top of the support plate, a fixed frame fixedly installed on the top of the fixed seat, an electric push rod fixedly installed on the lower surface of the fixed frame, a connecting plate fixedly connected to the electric push rod for movement, a fixed rod fixedly installed at the bottom of the connecting plate, and a protective shell fixedly connected to one end of the fixed rod. This device can adjust the depth of road surface cutting, employing mechanization to avoid long hours of work for workers and reduce labor intensity. However, this device only has a single cutting blade, resulting in a limited cutting mode; it can only perform single-line cutting on the road surface. When the width of the cut needs to be adjusted, technicians must perform numerous repetitive cutting operations, significantly increasing operation time and greatly increasing the labor intensity of technicians. The cutting efficiency and accuracy are low, severely restricting the overall operational efficiency and economic benefits of road maintenance projects. Moreover, the device uses casters for movement, which cannot guarantee the linearity of the road surface, leading to poor road surface cutting results. Utility Model Content

[0004] This invention provides a road surface cutting device to solve the technical problems of low cutting efficiency and poor effect of existing road surface cutting devices.

[0005] According to one aspect of the present invention, a road surface cutting device is provided, including a movable frame and a cutting mechanism for cutting the road surface. The cutting mechanism includes a connecting component mounted on the frame, a drive shaft assembly rotatably mounted on the connecting component, a cutting component detachably mounted on the drive shaft assembly, and a drive component connected to the drive shaft assembly and used to drive the drive shaft assembly to rotate so as to drive the cutting mechanism to rotate.

[0006] At least two cutting assemblies are provided along the axial direction of the drive shaft assembly, and the spacing between two adjacent cutting assemblies is adjustable.

[0007] Furthermore, the frame includes a lifting and moving assembly for adjusting the cutting depth of the cutting assembly via lifting control. The lifting and moving assembly is located at the front end of the cutting mechanism and mounted on the bottom of the frame along the cutting direction.

[0008] Furthermore, the lifting and moving assembly includes two symmetrically arranged first legs, a first moving member installed at the bottom of the first legs, and a lifting adjustment member installed between the two first legs for controlling the lifting and lowering of the first legs;

[0009] The first leg includes a fixed rod installed at the bottom of the frame and a sliding rod located below the fixed rod and slidably inserted through the fixed rod along its length. The lifting adjustment component includes a positioning plate installed on the frame and / or on the two fixed rods, a lifting plate installed on the two sliding rods, and a first power component located between the positioning plate and the lifting plate and installed on the positioning plate. The output end of the first power component is fixed to the sliding rod.

[0010] Furthermore, the frame also includes a steering movement assembly for adjusting the cutting direction by rotation, the steering movement assembly being located at the rear end of the cutting mechanism along the cutting direction;

[0011] The steering moving assembly includes a second support leg mounted on the bottom of the frame, a first bearing located below the second support leg and arranged vertically in the axial direction, a rotating disk mounted on the inner ring of the first bearing, a fixing member for connecting the second support leg and the outer ring of the first bearing, and a second moving member mounted on the bottom of the rotating disk. Two steering moving assemblies are provided at intervals in the horizontal direction.

[0012] The fastener includes a fixed inner ring disposed above the first bearing and fitted onto the outside of the second support leg, and a fixed outer ring fitted onto the outside of the fixed inner ring and fixed onto the outer ring of the first bearing. The bottom of the fixed inner ring is fixed to the upper end of the outer ring of the first bearing.

[0013] Furthermore, the frame also includes a positioning component for positioning the steering movement assembly so that the movement direction is consistent with the cutting direction. The positioning component includes a plug rod slidably mounted on the second leg, a plug block mounted on the bottom of the plug rod and used to engage with the rotating disk, a connecting rod disposed between the second legs of the two steering movement assemblies and used to connect the plug rods of the two second legs, and a magnetic rod disposed above the connecting rod and used to magnetically connect with the connecting rod.

[0014] The magnetic rod is located between the two second legs and fixed to the second legs. The fixing part has a clearance notch for the insertion block to pass through.

[0015] Furthermore, the connecting assembly includes a first connecting plate and a second connecting plate respectively disposed on both sides of the cutting assembly perpendicular to the cutting direction, and a fixing plate for detachably installing the second connecting plate;

[0016] Both the fixing plate and the first connecting plate are installed at the bottom of the frame.

[0017] Furthermore, the drive shaft assembly includes a drive shaft and two second bearings sleeved and installed at both ends of the drive shaft, with the two second bearings correspondingly installed in the pre-set mounting holes on the connecting assembly;

[0018] The drive shaft is provided with external threads.

[0019] Furthermore, the cutting assembly includes a cutting wheel that is axially movable through the outside of the drive shaft, and fasteners disposed on both sides of the cutting wheel for securing the cutting wheel to the drive shaft;

[0020] Fasteners are threadedly connected to the drive shaft.

[0021] Furthermore, the drive assembly includes a second power unit mounted on the frame, a drive wheel mounted on the output end of the second power unit, and a driven wheel mounted on the drive shaft and connected to the drive wheel in a driving transmission.

[0022] The driven wheel is located between the cutting wheel and the connecting assembly.

[0023] Furthermore, the outer cover of the second power unit is equipped with a protective cover, which is mounted on the vehicle frame.

[0024] This utility model has the following beneficial effects:

[0025] This road surface cutting device, by detachably mounting the cutting components onto the drive shaft assembly, allows for the installation of different numbers of cutting components according to actual construction needs. It can perform not only single-line cutting but also multi-line cutting of the road surface in a single operation. Compared with existing technologies, it eliminates the need for workers to perform numerous repetitive cutting operations, effectively reducing labor intensity and significantly improving the overall work efficiency and economic benefits of road maintenance projects. By adjusting the spacing between adjacent cutting components, it can flexibly adapt to the need for cutting joints of different widths, achieving precise cutting of joints of varying widths, meeting diverse construction requirements, and expanding its applicability. The cutting action of the cutting components is controlled by the cooperation of the drive shaft assembly and the drive assembly. The compact structure and stable transmission effectively ensure the stability of the cutting process and improve cutting accuracy. This invention is applicable to cutting operations on various road surfaces such as asphalt and concrete, is simple and convenient to operate, and has wide applicability and practicality.

[0026] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0028] Figure 1 This is a schematic diagram of the road cutting device according to a preferred embodiment of the present invention. Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the road cutting device according to a preferred embodiment of the present invention. Figure 2 ;

[0030] Figure 3 This is a schematic diagram of the road cutting device according to a preferred embodiment of the present invention. Figure 3 ;

[0031] Figure 4 This is a partial structural schematic diagram of the steering and moving component of the road cutting device according to a preferred embodiment of the present invention.

[0032] Legend:

[0033] 100. Frame; 101. Platform; 102. Handrail; 103. Lifting and moving assembly; 1031. Fixed rod; 1032. Sliding rod; 1033. First moving component; 1034. Positioning plate; 1035. Lifting plate; 1036. First power component; 104. Steering and moving assembly; 1041. Second support leg; 1042. First bearing; 1043. Rotating disk; 1044. Fixed inner ring; 1045. Fixed outer ring; 1046. Second moving component; 105. Positioning assembly; 1051. Connecting rod ; 1052, Insert block; 1053, Connecting rod; 1054, Magnetic suction rod; 200, Cutting mechanism; 201, Connecting assembly; 2011, First connecting plate; 2012, Second connecting plate; 2013, Fixing plate; 202, Drive shaft assembly; 2021, Drive shaft; 2022, Second bearing; 203, Cutting assembly; 2031, Cutting wheel; 2032, Fastener; 204, Drive assembly; 2041, Second power component; 2042, Drive wheel; 2043, Driven wheel; 300, Protective cover. Detailed Implementation

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0035] like Figure 1 , Figure 2 and Figure 3As shown, the road cutting device of this embodiment includes a frame 100 and a cutting mechanism 200 for cutting the road surface. The frame 100 is movable, and the cutting mechanism 200 is mounted on the frame 100 and can move with the frame 100 to the construction position to perform cutting operations. Specifically, the cutting mechanism 200 includes a connecting component 201, a drive shaft assembly 202, a cutting component 203, and a drive assembly 204. The connecting component 201 is mounted on the frame 100. The drive shaft assembly 202 is mounted on the connecting component 201 and can rotate relative to the connecting component 201. The cutting component 203 is detachably mounted on the drive shaft assembly 202 for cutting the road surface. The drive assembly 204 is mounted on the frame 100 and is connected to the drive shaft assembly 202 for transmission. Thus, the drive shaft assembly 202 is rotated through power transmission to drive the cutting mechanism 200 to rotate for cutting. The cutting action of the cutting component 203 is controlled by the cooperation of the drive shaft assembly 202 and the drive assembly 204. The structure is compact, the transmission is stable, and the stability of the cutting process is effectively guaranteed, thus improving the cutting accuracy. By detachably installing the cutting component 203 onto the drive shaft assembly 202, different numbers of cutting components 203 can be installed according to actual construction needs. This not only allows for single-line cutting of the road surface but also enables multi-line cutting of the road surface at one time. Compared with existing technologies, it eliminates the need for workers to perform a large number of repetitive cutting operations on the road surface, effectively reducing labor intensity and significantly improving the overall operational efficiency and economic benefits of road maintenance projects.

[0036] In this embodiment, at least two cutting components 203 are provided along the axial direction of the drive shaft assembly 202, and the spacing between two adjacent cutting components 203 is adjustable. This allows for flexible adaptation to the cutting requirements of different road surface widths by adjusting the spacing between the cutting components 203, meeting diverse construction requirements and expanding the applicability.

[0037] like Figure 1 and Figure 2As shown, the frame 100 includes a platform 101, a handrail 102 mounted at the end of the platform 101, and a lifting and moving assembly 103 mounted at the bottom of the platform 101. The lifting and moving assembly 103 is located at the front end of the cutting mechanism 200 along the cutting direction and at the end of the platform 101 away from the handrail 102. The cutting depth of the cutting wheel 2031 can be adjusted by lifting and moving the assembly 103. The handrail 102 is located above the platform 101 and fixed to one end of the platform 101 to facilitate the operator to push the device. Preferably, the surface of the handrail 102 is provided with a non-slip rubber layer for easy gripping. When in use, when cutting the ground is required, hold the handle 102 to move the device to the construction position. According to the required cutting depth, adjust the height of the lifting and moving component 103 so that the height between the bottom of the lifting and moving component 103 and the bottom of the cutting component 203 matches the cutting depth. Then, control the handle 102 to tilt the device downwards towards the lifting and moving component 103 so that the bottom of the cutting component 203 contacts the ground for cutting, thereby achieving accurate control of the cutting depth and improving the cutting quality.

[0038] like Figure 1 and Figure 2 As shown, specifically, the lifting and moving assembly 103 includes two symmetrically arranged first legs, a first moving member 1033 mounted on the bottom of the first legs, and a lifting adjustment member mounted between the two first legs. The lifting adjustment member is used to control the lifting and lowering of the first legs. Specifically, the first leg includes a fixed rod 1031 mounted on the bottom of the platform 101, and a sliding rod 1032 located below the fixed rod 1031 and slidably passing through the fixed rod 1031 along its length. The lifting adjustment member includes a positioning plate 1034 mounted on the platform 101 and / or mounted on the two fixed rods 1031, a lifting plate 1035 mounted on the two sliding rods 1032, and a first power member 1036 located between the positioning plate 1034 and the lifting plate 1035 and mounted on the positioning plate 1034. The output end of the first power member 1036 is fixed to the sliding rod 1032. Preferably, the first power member 1036 is a drive cylinder. The first moving component 1033 includes a second mounting frame fixed to the bottom of the sliding rod 1032 and a second moving wheel rotatably mounted within the second mounting frame. The moving direction of the second moving wheel is consistent with the cutting direction of the cutting wheel 2031. In use, activating the first power component 1036 causes the lifting plate 1035 connected to the output end of the first power component 1036 to drive the sliding rod 1032 to extend and retract within the fixed rod 1031, thereby enabling the first support leg to move up and down.

[0039] like Figure 1 and Figure 4As shown, the frame 100 also includes a steering and moving assembly 104 for adjusting the cutting direction by rotation. The steering and moving assembly 104 is disposed at the rear end of the cutting mechanism 200 along the cutting direction and two are spaced apart in the horizontal direction. Specifically, the steering and moving assembly 104 includes a second leg 1041 mounted on the bottom of the platform 101, a second moving member 1046 disposed below the second leg 1041 for linear movement, and a steering member mounted between the second leg 1041 and the second moving member 1046 for controlling the steering of the second moving member 1046. Specifically, the steering component includes a first bearing 1042 located below the second support leg 1041 and axially arranged vertically, a rotating disk 1043 mounted on the inner ring of the first bearing 1042, and a fixing component for connecting the second support leg 1041 and the outer ring of the first bearing 1042. The fixing component includes a fixing inner ring 1044 located above the first bearing 1042 and sleeved on the outside of the second support leg 1041, and a fixing outer ring 1045 sleeved on the outside of the first fixing ring and fixed on the outer ring of the first bearing 1042. The bottom of the fixing inner ring 1044 is fixed to the upper end of the outer ring of the first bearing 1042. The second moving component 1046 includes a first mounting frame fixed to the lower end of the outer ring of the first bearing 1042 and a first moving wheel rotatably mounted in the first mounting frame. The two sides of the first moving wheel are limited by the first mounting frame, so that it can only move in a straight line. Therefore, the device can be controlled to rotate to the required construction direction by the cooperation of the rotating component and the second moving component 1046, and the second moving component 1046 can be positioned by the insertion and cooperation of the positioning component 105 and the steering component, so that the moving direction of the second moving component 1046 is consistent with the direction of the cutting line, avoiding directional tilting during the cutting process and improving the cutting quality.

[0040] like Figure 1 and Figure 4As shown, the frame 100 also includes a positioning assembly 105, which is mounted on the steering moving assembly 104 and used to position the steering moving assembly 104 so that the moving direction is consistent with the cutting direction. Specifically, the positioning assembly 105 includes a plug rod 1051 slidably mounted on the second support leg 1041, a plug block 1052 disposed at the bottom of the plug rod 1051, a connecting rod 1053 disposed between the two second support legs 1041 and connected to the upper end of the plug rod 1051, and a magnetic suction rod 1054 disposed above the connecting rod 1053 and mounted on the second support leg 1041. The magnetic suction rod 1054 is disposed between the two second support legs 1041 and fixed to the second support legs 1041. The magnetic suction rod 1054 is used to magnetically connect with the connecting rod 1053 so that the plug block 1052 disengages from the rotating disk 1043 and releases the restriction on the second moving member 1046. The fixing component has a clearance notch for the insertion block 1052 to pass through. The clearance notch is axially formed on the fixing inner ring 1044 and / or fixing outer ring 1045. Specifically, the second leg 1041 has a sliding groove along its length, and the insertion rod 1051 has a protrusion along its length corresponding to the sliding groove. By engaging the protrusion in the sliding groove, the insertion rod 1051 can slide within the second leg 1041. The rotating disk 1043 has an insertion groove along the cutting direction, and the fixing inner ring 1044 and / or fixing outer ring 1045 have clearance notches. By passing the insertion block 1052 through the clearance notch and inserting it into the insertion groove, the moving direction of the first moving wheel can be kept consistent with the cutting direction of the cutting wheel 2031, preventing the rotating disk 1043 from rotating during the cutting process, avoiding the first moving wheel from deviating from the cutting direction, and improving the cutting effect. Preferably, a lever is installed on the connecting rod 1053 so that the operator can pull the connecting rod 1053 upward to make it magnetically attach to the magnetic rod 1054.

[0041] In use, draw a cutting line on the ground to be cut, then align the cutting assembly 203 with the cutting line. Adjust the direction of movement of the first moving wheel to align with the direction of the cutting line, and then insert the insert block 1052 through the clearance notch into the insertion slot in the rotating disk 1043 to position the first moving wheel. This prevents the first moving wheel from shifting during movement and improves the cutting quality of the road surface. When it is necessary to turn the device, pull the connecting rod 1053 toward the magnetic suction rod 1054 to magnetically connect the connecting rod 1053 and the magnetic suction rod 1054. At this time, the insertion rod 1051 moves upward with the connecting rod 1053 under the magnetic attraction, and the insert block 1052 disengages from the insertion slot, releasing the restriction on the first moving wheel, allowing the first moving wheel to turn under the drive of the rotating disk 1043.

[0042] like Figure 1 , Figure 2 and Figure 3As shown, the connecting assembly 201 includes a first connecting plate 2011, a second connecting plate 2012, and a fixing plate 2013. The first connecting plate 2011 and the second connecting plate 2012 are respectively disposed on both sides of the cutting assembly 203 along a direction perpendicular to the cutting direction. The fixing plate 2013 and the first connecting plate 2011 are both installed on the bottom of the vehicle plate 101. The fixing plate 2013 is disposed above the second connecting plate 2012 and is used to detachably install the second connecting plate 2012. A limiting groove is formed in the fixing plate 2013, and one end of the second connecting plate 2012 is engaged in the limiting groove and connected to the fixing plate 2013 by bolts. The first connecting plate 2011 and the second connecting plate 2012 have corresponding mounting holes for installing the drive shaft assembly 202. The cutting assembly 203 is installed on the drive shaft assembly 202 between the first connecting plate 2011 and the second connecting plate 2012. Therefore, by setting the second connecting plate 2012 and the fixing plate 2013 to be detachably connected, the installation and removal of the drive shaft assembly 202 and the cutting assembly 203 can be facilitated.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the drive shaft assembly 202 includes a drive shaft 2021 and two second bearings 2022 sleeved and installed at both ends of the drive shaft 2021. The drive shaft 2021 is located between the first connecting plate 2011 and the second connecting plate 2012. The two second bearings 2022 are installed one-to-one with the two mounting holes on the first connecting plate 2011 and the second connecting plate 2012. The drive shaft 2021 is provided with external threads. Specifically, in this embodiment, the outer ring of the second bearing 2022 is engaged and fixed with the inner wall of the mounting hole, ensuring a tight connection while preventing relative rotation between the outer ring of the second bearing 2022 and the connecting assembly 201, and facilitating the installation and removal of the drive shaft assembly 202. Thus, the drive shaft 2021 can rotate within the connecting assembly 201 through the bearings, thereby driving the cutting assembly 203 to perform rotational cutting. Preferably, a limiting ring is provided at one end of the drive shaft 2021 near the first connecting plate 2011 and / or near the second connecting plate 2012 to prevent the second bearing 2022 from coming out of the mounting hole.

[0044] like Figure 1 and Figure 3As shown, the cutting assembly 203 includes a cutting wheel 2031 for cutting and fasteners 2032 for securing the cutting wheel 2031 to the drive shaft 2021. The cutting wheel 2031 is axially movably inserted through the outside of the drive shaft 2021. The fasteners 2032 are located on both sides of the cutting wheel 2031 and are threadedly connected to the drive shaft 2021 through the outside of the drive shaft 2021. Preferably, the fasteners 2032 are nuts. Thus, the cutting wheel 2031 can be secured by screwing the nuts on both sides of the cutting wheel 2031 along the drive shaft 2021 toward the end of the cutting wheel 2031, allowing the cutting wheel 2031 to rotate synchronously with the drive shaft 2021. Furthermore, the threaded engagement of the nut with the drive shaft 2021 facilitates the disassembly and position adjustment of the cutting wheel 2031. When single-line cutting of the ground is required, only one cutting wheel 2031 needs to be installed on the drive shaft 2021. When a cut of a certain width is required, two cutting wheels 2031 can be installed, and the distance between the two cutting wheels 2031 can be adjusted using the nut to accommodate different cut width requirements. Optionally, multiple cutting wheels 2031 can be installed on the drive shaft 2021 to perform multi-line cutting simultaneously, reducing repetitive cutting operations.

[0045] like Figure 3 As shown, the drive assembly 204 includes a second power component 2041, a transmission wheel 2042, and a driven wheel 2043. Both the second power component 2041 and the transmission wheel 2042 are located on the upper end of the vehicle platform 101. The transmission wheel 2042 is mounted on the output end of the second power component 2041. The driven wheel 2043 is sleeved on the outside of the transmission shaft 2021 and fixed to it. The driven wheel 2043 is connected to the transmission wheel 2042 via a transmission connection. Preferably, the second power component 2041 is a drive motor. Therefore, by turning on the second power component 2041 and rotating its output end, the transmission shaft 2021 can be driven to rotate synchronously through the transmission connection between the transmission wheel 2042 and the driven wheel 2043, thereby driving the cutting wheel 2031 to rotate and perform the cutting action. Driven wheel 2043 is located between cutting wheel 2031 and first connecting plate 2011 or second connecting plate 2012 to prevent it from affecting the adjustment of the distance between the two cutting wheels 2031, and to facilitate the installation and removal of drive shaft assembly 202 and drive assembly 204.

[0046] Preferably, in this embodiment, the drive wheel 2042 and the driven wheel 2043 are pulleys, connected by a belt for transmission, thereby achieving cooperative transmission between them. Optionally, the drive wheel 2042 and the driven wheel 2043 can also be gears, with gear meshing between them to achieve cooperative transmission. Optionally, the drive wheel 2042 and the driven wheel 2043 can also be sprockets, connected by a chain to achieve cooperative transmission between them.

[0047] like Figure 1 and Figure 2 As shown, the second power component 2041 is covered by a protective cover 300, which is mounted on the vehicle plate 101 to protect the second power component 2041 and improve the service life of the device. Preferably, the inner wall of the protective cover 300 is provided with a noise reduction structure to reduce the noise generated by the second power component 2041.

[0048] Optionally, the cutting mechanism 200 is equipped with a protective housing, the bottom of which is higher than the bottom of the cutting wheel 2031. The protective housing is installed on the bottom of the vehicle plate 101 and can shield the cutting wheel 2031 from debris and dust generated during the cutting process, thereby improving safety. Optionally, the inner wall of the protective housing is provided with a rubber pad. This rubber pad prevents direct collision between debris and the protective housing during cutting, thus protecting the housing and reducing noise. Optionally, a water spraying device is also installed inside the protective housing. Spraying water reduces dust dispersed into the air during cutting, preventing dust spread and cooling the surface of the cutting wheel 2031.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A road surface cutting device, characterized in that, The device includes a movable frame (100) and a cutting mechanism (200) for cutting the road surface. The cutting mechanism (200) includes a connecting assembly (201) mounted on the frame (100), a drive shaft assembly (202) rotatably mounted on the connecting assembly (201), a cutting assembly (203) detachably mounted on the drive shaft assembly (202), and a drive assembly (204) connected to the drive shaft assembly (202) and used to drive the drive shaft assembly (202) to rotate so as to drive the cutting mechanism (200) to rotate. At least two cutting components (203) are provided along the axial direction of the drive shaft assembly (202), and the spacing between two adjacent cutting components (203) is adjustable; The frame (100) includes a lifting and moving assembly (103) for adjusting the cutting depth of the cutting assembly (203) by lifting control. The lifting and moving assembly (103) is located at the front end of the cutting mechanism (200) along the cutting direction and is installed at the bottom of the frame (100).

2. The road surface cutting device according to claim 1, characterized in that, The lifting and moving assembly (103) includes two symmetrically arranged first legs, a first moving member (1033) installed at the bottom of the first legs, and a lifting adjustment member installed between the two first legs for controlling the lifting and lowering of the first legs. The first support leg includes a fixed rod (1031) mounted on the bottom of the frame (100) and a sliding rod (1032) disposed below the fixed rod (1031) and slidably inserted in the fixed rod (1031) along the length direction. The lifting adjustment component includes a positioning plate (1034) mounted on the frame (100) and / or mounted on the two fixed rods (1031), a lifting plate (1035) mounted on the two sliding rods (1032), and a first power component (1036) disposed between the positioning plate (1034) and the lifting plate (1035) and mounted on the positioning plate (1034). The output end of the first power component (1036) is fixed to the sliding rod (1032).

3. The road surface cutting device according to claim 1, characterized in that, The frame (100) also includes a steering movement assembly (104) for adjusting the cutting direction by rotation, the steering movement assembly (104) being disposed at the rear end of the cutting mechanism (200) along the cutting direction; The steering moving assembly (104) includes a second support leg (1041) mounted on the bottom of the frame (100), a first bearing (1042) disposed below the second support leg (1041) and arranged axially in a vertical direction, a rotating disk (1043) mounted on the inner ring of the first bearing (1042), a fixing member for connecting the second support leg (1041) and the outer ring of the first bearing (1042), and a second moving member (1046) mounted on the bottom of the rotating disk (1043). Two steering moving assemblies (104) are provided at horizontal intervals. The fastener includes a fixed inner ring (1044) disposed above the first bearing (1042) and sleeved on the outside of the second support leg (1041), and a fixed outer ring (1045) sleeved on the outside of the fixed inner ring (1044) and fixed on the outer ring of the first bearing (1042). The bottom of the fixed inner ring (1044) is fixed to the upper end of the outer ring of the first bearing (1042).

4. The road surface cutting device according to claim 3, characterized in that, The frame (100) further includes a positioning component (105) for positioning the steering moving assembly (104) so ​​that the moving direction is consistent with the cutting direction. The positioning component (105) includes a plug rod (1051) slidably mounted on the second support leg (1041), a plug block (1052) mounted on the bottom of the plug rod (1051) and used to engage with the rotating disk (1043), a connecting rod (1053) disposed between the two second support legs (1041) of the two steering moving assemblies (1041) and used to connect the two second support legs (1041), and a magnetic rod (1054) disposed above the connecting rod (1053) and used to magnetically connect with the connecting rod (1053). The magnetic rod (1054) is located between the two second legs (1041) and fixed to the second legs (1041). The fixing member has a clearance notch for the insertion block (1052) to pass through.

5. The road surface cutting device according to claim 1, characterized in that, The connecting assembly (201) includes a first connecting plate (2011) and a second connecting plate (2012) respectively disposed on both sides of the cutting assembly (203) perpendicular to the cutting direction, and a fixing plate (2013) for detachably installing the second connecting plate (2012); Both the fixing plate (2013) and the first connecting plate (2011) are installed on the bottom of the frame (100).

6. The road surface cutting device according to claim 1, characterized in that, The drive shaft assembly (202) includes a drive shaft (2021) and two second bearings (2022) sleeved and installed at both ends of the drive shaft (2021). The two second bearings (2022) are respectively installed in the preset mounting holes on the connecting assembly (201). The drive shaft (2021) is provided with external threads.

7. The road surface cutting device according to claim 6, characterized in that, The cutting assembly (203) includes a cutting wheel (2031) that is axially movably disposed outside the drive shaft (2021), and fasteners (2032) disposed on both sides of the cutting wheel (2031) for fastening the cutting wheel (2031) to the drive shaft (2021). The fastener (2032) is threadedly connected to the drive shaft (2021).

8. The road surface cutting device according to claim 7, characterized in that, The drive assembly (204) includes a second power member (2041) mounted on the frame (100), a drive wheel (2042) mounted on the output end of the second power member (2041), and a driven wheel (2043) mounted on the drive shaft (2021) and connected to the drive wheel (2042) in a drive transmission. The driven wheel (2043) is located between the cutting wheel (2031) and the connecting assembly (201).

9. The road surface cutting device according to claim 8, characterized in that, The second power component (2041) is provided with a protective cover (300) on its outer cover, and the protective cover (300) is mounted on the frame (100).

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