Pavement milling drum, pavement milling device, and pavement planer

Abstract

The present utility model provides a pavement milling drum, a pavement milling device, and a pavement planer. The pavement milling drum comprises a disc-shaped support body, the support body has a circumferential surface and a bottom surface arranged in sequence from top to bottom, the bottom surface is arranged towards the pavement, and the circumferential surface surrounds the bottom surface and is connected to the bottom surface along the edge of the bottom surface; a plurality of first milling teeth are arranged on the bottom surface around a rotation axis of the support body, and a plurality of second milling teeth are arranged on the circumferential surface around the rotation axis of the support body. The problem of crushing and leveling protruding rocks on the pavement is solved.

Description

Road cutting disc, road cutting device and road leveling machine Technical Field

[0001] The utility model relates to the technical field of road construction equipment, in particular to a road cutting disc, a road cutting device and a road leveling machine. Background Art

[0002] Rock protrusions are common on mine roads and on construction sites. Driving on such roads can cause significant bumps, which can lead to fatigue damage, increased tire wear, and slow speeds, reducing work efficiency and causing physical harm to the driver.

[0003] For this reason, there is an urgent need for a device that can crush and flatten the protruding rocks on the road surface.

[0004] Utility Model Content

[0005] In view of the problems existing in the above technology, the present invention solves them to a certain extent. To this end, the present invention provides a road surface cutting cutter head, a road surface cutting device and a road surface leveling machine, which solve the problem of crushing and leveling raised rocks on the road surface.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0007] In the first aspect, the utility model provides a road cutting disc, including a disc-shaped support body, the support body having a circumferential surface and a bottom surface arranged in sequence from top to bottom, the bottom surface is arranged toward the road surface, the circumferential surface surrounds the bottom surface and is connected to the bottom surface along the edge of the bottom surface; a plurality of first cutting teeth are arranged on the bottom surface around the rotation axis of the support body, and a plurality of second cutting teeth are arranged on the circumferential surface around the rotation axis of the support body.

[0008] Optionally, a cavity is provided inside the supporting body.

[0009] Optionally, an opening communicating with the cavity is provided on the top of the supporting body, and a rotating drive shaft mounting position is provided at a position corresponding to the opening in the cavity.

[0010] Optionally, a plurality of first cutting teeth are arranged in a circular arrangement around the rotation axis of the support body on the bottom surface, and a plurality of second cutting teeth are arranged in a circular arrangement around the rotation axis of the support body on the circumferential surface; or, a plurality of first cutting teeth are arranged in a spiral arrangement around the rotation axis of the support body on the bottom surface, and a plurality of second cutting teeth are arranged in a spiral arrangement around the rotation axis of the support body on the circumferential surface.

[0011] Optionally, on the bottom surface, the first cutting teeth extend in the direction of the circular arrangement and are inclined downward; on the circumferential surface, the second cutting teeth extend in the direction of the circular arrangement and are inclined downward; or, on the bottom surface, the first cutting teeth extend in the direction of the spiral arrangement and are inclined downward; on the circumferential surface, the second cutting teeth extend in the direction of the spiral arrangement and are inclined downward.

[0012] Optionally, the first cutting teeth are detachably connected to the support body, and the second cutting teeth are detachably connected to the support body.

[0013] In the second aspect, the utility model provides a road cutting device, including a mounting plate and a cutting disc as described above arranged in sequence from top to bottom, the top of the supporting body is rotatably mounted on the mounting plate, and a plurality of shielding plates arranged around the cutting disc are connected to the bottom surface of the mounting plate, and the plurality of shielding plates are arranged close to each other; during the process of the cutting disc cutting the road surface, the plurality of shielding plates always remain in contact with the road surface.

[0014] Optionally, each shielding plate is connected to the mounting plate via a spring.

[0015] In a third aspect, the present invention provides a road planer, comprising a vehicle body and a cutting disc as described above, wherein the cutting disc is suspended on the vehicle body to contact and engage the road surface, and the vehicle body drives the cutting disc to work.

[0016] Optionally, the road leveler also includes a rotary drive assembly; the frame of the vehicle body includes a front frame and a rear frame hinged in sequence from front to back, the rear frame is supported on the drive wheel, the front frame is supported on the steering wheel, the rear frame is provided with an engine, a pull rod is provided below the front frame, the front end of the pull rod is connected to the front end of the front frame through a multi-dimensional universal joint, and the rear end of the pull rod is connected to the front frame through a first linear actuator and a second linear actuator located on the left and right sides of the front frame; the rotary drive assembly and the cutting disc are both installed on the pull rod, and the cutting disc is located below the pull rod, and the rotary drive assembly is transmission connected to the cutting disc; the engine is transmission connected to the drive wheel and the rotary drive assembly respectively.

[0017] The beneficial effects of the utility model are:

[0018] The road cutting disc provided by the utility model has a disc-shaped supporting body, and the first cutting teeth on the bottom surface of the supporting body can cut rocks in the horizontal direction, and the second cutting teeth on the circumferential surface of the supporting body can cut rocks in the vertical direction. The rock crushing efficiency is high, and after cutting the protruding rocks, the crushed stones are easily dispersed, which can form a smoother road surface and is conducive to vehicle driving.

[0019] The road surface leveling device provided by the utility model can block the debris splashed out by the cutting disc when the cutting disc rotates to cut rocks, thereby preventing the debris from flying out and causing damage.

[0020] The road surface leveling machine provided by the utility model is equipped with the road surface cutting cutter disc and can effectively crush and level the protruding rocks on the road surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] FIG1 is a schematic diagram of the three-dimensional structure of a road surface cutting disc according to Example 1 of the present utility model;

[0023] FIG2 is an exploded schematic diagram of a road surface cutting cutter disc according to Example 1 of the present invention;

[0024] FIG3 is a schematic diagram of the matching structure of the cutting tooth mounting position, the mounting member and the cutting tooth according to Example 1 of the present utility model;

[0025] FIG4 is a schematic diagram of the three-dimensional structure of the road surface leveling device according to Example 4 of the present utility model at a first viewing angle;

[0026] FIG5 is an exploded schematic diagram of a road surface leveling device according to Example 4 of the present invention;

[0027] FIG6 is a schematic diagram of the three-dimensional structure of the road surface leveling device according to Example 4 of the present utility model at a second viewing angle;

[0028] FIG7 is a schematic diagram of the three-dimensional structure of the road planer according to Example 5 of the present utility model at a first viewing angle;

[0029] FIG8 is a schematic diagram of the three-dimensional structure of the road planer according to Example 5 of the present utility model at a second viewing angle.

[0030] Explanation of the reference numerals: 11: supporting body; 12: first cutting tooth; 13: second cutting tooth; 14: opening; 15: rotating drive shaft mounting position; 16: first mounting member; 17: first cutting tooth mounting position; 111: flange; 171: first cutting tooth mounting groove; 121: first mounting portion; 122: first cutting portion; 2: mounting plate; 3: shielding plate; 4: front frame; 41: first lifting cylinder; 42: second lifting cylinder; 5: rear frame; 6: driving wheel; 7: steering wheel; 9: pull rod; 10: rotating drive assembly; 101: universal joint. DETAILED DESCRIPTION

[0031] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the directional terms such as "upper", "lower", "front", "back", "left", and "right" mentioned herein are based on the orientation of Figures 1 and 7.

[0032] Example 1

[0033] As shown in Figures 1 to 3, this embodiment provides a road cutting disc. The road cutting disc includes a disc-shaped support body 11 having a circumferential surface and a bottom surface, arranged from top to bottom. The bottom surface faces the road surface, and the circumferential surface surrounds the bottom surface and is connected to the bottom surface along its edge. A plurality of first cutting teeth 12 are arranged on the bottom surface around the rotation axis of the support body 11, and a plurality of second cutting teeth 13 are arranged on the circumferential surface around the rotation axis of the support body 11.

[0034] The road cutting disc is configured in this way, and the supporting body 11 is disc-shaped. The first cutting teeth 12 on the bottom surface of the supporting body 11 can cut rocks in the horizontal direction, and the second cutting teeth 13 on the circumferential surface of the supporting body 11 can cut rocks in the vertical direction. The rock crushing efficiency is high, and after cutting the protruding rocks, the gravel is easily dispersed, which can form a smoother road surface and is conducive to vehicle driving.

[0035] Preferably, as shown in Figure 2, a cavity is provided inside the support body 11. Thus, the support body 11 is configured as a hollow structure, which reduces the weight of the support body 11 and facilitates the rotation drive and installation of the support body 11.

[0036] Further preferably, the top of the support body 11 is provided with an opening 14 communicating with the cavity, and a rotation drive shaft mounting position 15 is provided within the cavity at a position corresponding to the opening 14. This allows the rotation drive shaft to extend through the opening 14 into the cavity and be mounted on the rotation drive shaft mounting position 15, facilitating the connection between the cutting disc and the rotation drive shaft. Furthermore, the overall structure is more stable, thereby ensuring more stable rotary cutting by the disc.

[0037] Preferably, a plurality of first cutting teeth 12 are arranged in a circular pattern around the rotation axis of the support body 11 on the bottom surface, and a plurality of second cutting teeth 13 are arranged in a circular pattern around the rotation axis of the support body 11 on the circumferential surface. The cutting teeth arranged in this manner further improve the rock crushing efficiency.

[0038] Furthermore, preferably, on the bottom surface, the first cutting teeth 12 extend in a circular arrangement and are inclined downward, while on the circumferential surface, the second cutting teeth 13 extend in a circular arrangement and are inclined downward. This improves rock crushing efficiency, and even when protruding rocks are cut, the crushed rock is easily distributed around the cutting disc, facilitating the formation of a smooth road surface.

[0039] Furthermore, the plurality of first cutting teeth 12 are arranged on the bottom surface around the rotation axis of the support body 11 to form at least two concentric circles. The plurality of second cutting teeth 13 are arranged on the circumferential surface around the rotation axis of the support body 11 to form at least one circle arranged in a vertical direction. Furthermore, the at least two concentric circles are positioned closer to the edge of the bottom surface than the rotation axis of the support body 11. This creates a clear area at the center of the bottom surface to accommodate gravel, reducing the impact of gravel on the cutting teeth.

[0040] Specifically, in this embodiment, multiple first cutting teeth 12 are arranged on the bottom surface around the rotation axis of the support body 11 to form two concentric circles, and multiple second cutting teeth 13 are arranged on the circumferential surface around the rotation axis of the support body 11 to form a circle set close to the bottom surface.

[0041] Specifically, the cutting teeth are made of cemented carbide or diamond, which have high hardness, high toughness and high rock crushing efficiency.

[0042] Preferably, the diameter of the cutting disc is 100 to 220 cm, and the thickness (i.e., height) of the cutting disc is 40 to 60 cm. A cutting disc of this size facilitates crushing and leveling protruding rocks on the road surface. Further preferably, the diameter of the cutting disc is 220 cm, and the thickness is 50 cm. This facilitates crushing and leveling protruding rocks on the mine road surface.

[0043] Preferably, the road cutting disc further comprises a first mounting member 16 and a second mounting member, a first cutting tooth mounting position 17 protruding from the bottom surface is provided on the bottom surface, a second cutting tooth mounting position protruding from the circumferential surface is provided on the circumferential surface, the first cutting tooth mounting position 17 is provided with a first cutting tooth mounting groove 171 extending along the first cutting tooth 12, and the second cutting tooth mounting position is provided with a second cutting tooth mounting groove extending along the second cutting tooth 13; the first cutting tooth 12 has a first mounting portion 121 and a first cutting portion 122, the first mounting portion 121 extends into the first cutting tooth mounting groove 171, and the first cutting portion 122 extends out of the first cutting tooth The mounting groove 171 is located outside the support body 11, and the first mounting member 16 extends from the outside of the support body 11 into the first cutting tooth mounting groove 171 and is detachably connected to the first mounting portion 121, thereby fixing the first cutting tooth 12 to the support body 11 (as shown in FIG3 ); the second cutting tooth 13 has a second mounting portion and a second cutting portion, the second mounting portion extending into the second cutting tooth mounting groove, the second cutting portion extending out of the second cutting tooth mounting groove and located outside the support body 11, and the second mounting member extends from the outside of the support body 11 into the second cutting tooth mounting groove and is detachably connected to the second mounting portion, thereby fixing the second cutting tooth 13 to the support body 11. The cooperation between the mounting member and the cutting tooth mounting position facilitates the fixing of the cutting tooth to the support body 11. Since the cutting tooth is a wearing part, the mounting member can be directly acted on to achieve quick disassembly and assembly of the cutting tooth during maintenance.

[0044] Furthermore, the first mounting member 16 is a bolt, the first mounting portion 121 is provided with a threaded hole, and the bolt is threadedly connected to the threaded hole to achieve a detachable connection between the first mounting portion 121 and the first mounting member 16; the second mounting member is a bolt, the second mounting portion is provided with a threaded hole, and the bolt is threadedly connected to the threaded hole to achieve a detachable connection between the second mounting portion and the second mounting member.

[0045] Furthermore, in this embodiment, the first cutting portion 122 is connected to the first mounting portion 121, the first cutting portion 122 is conical, the first mounting portion 121 is cylindrical, and the cone bottom of the first cutting portion 122 is connected to the end face of the first mounting portion 121; the second cutting portion is connected to the second mounting portion, the second cutting portion is conical, the second mounting portion is cylindrical, and the cone bottom of the second cutting portion is connected to the end face of the second mounting portion.

[0046] Example 2

[0047] The main differences between this embodiment and embodiment 1 are:

[0048] A plurality of first cutting teeth are arranged in a spiral arrangement around the rotation axis of the support body on the bottom surface, and a plurality of second cutting teeth are arranged in a spiral arrangement around the rotation axis of the support body on the circumferential surface. The cutting teeth arranged in this way further improve the rock crushing efficiency.

[0049] Preferably, the plurality of first cutting teeth are arranged closer to the edge of the bottom surface than the rotation axis of the support body, so that a vacant area for accommodating gravel can be formed at the center of the bottom surface, reducing the impact of gravel on the cutting teeth.

[0050] Preferably, on the bottom surface, the first cutting teeth extend in a spiral arrangement and are inclined downward; on the circumferential surface, the second cutting teeth extend in a spiral arrangement and are inclined downward. This increases rock crushing efficiency, and even when protruding rocks are cut, the crushed rock is easily distributed around the cutting disc, facilitating a smooth road surface.

[0051] Further preferably, the spiral arrangement path of the first cutting teeth on the bottom surface is connected to the spiral arrangement path of the second cutting teeth on the circumferential surface.

[0052] The rest of the contents are the same as those in Example 1 and will not be repeated here.

[0053] Example 3

[0054] The main differences between this embodiment and embodiment 1 are:

[0055] The road cutting disc also includes a first mounting member and a second mounting member, a first cutting tooth mounting hole connecting the outside of the support body and the receiving cavity is opened on the bottom surface, and a second cutting tooth mounting hole connecting the outside of the support body and the receiving cavity is opened on the circumferential surface; the first cutting tooth has a first mounting portion and a first cutting portion, the first mounting portion extends into the first cutting tooth mounting hole, the first cutting portion is located outside the support body, the first mounting member extends from the receiving cavity into the first cutting tooth mounting hole and is detachably connected to the first mounting member, thereby fixing the first cutting tooth to the support body; the second cutting tooth has a second mounting portion and a second cutting portion, the second mounting portion extends into the second cutting tooth mounting hole, the second cutting portion is located outside the support body, the second mounting member extends from the receiving cavity into the second cutting tooth mounting hole and is detachably connected to the second mounting member, thereby fixing the second cutting tooth to the support body. In this way, the fixing of the cutting tooth to the support body is facilitated. Since the cutting tooth is a wearing part, during maintenance, the cutting tooth can be quickly disassembled and assembled by extending into the receiving cavity through the opening and acting on the mounting member.

[0056] The rest of the contents are the same as those in Example 1 and will not be repeated here.

[0057] Example 4

[0058] As shown in Figures 4 to 6 , this embodiment provides a road surface leveling device. The road surface leveling device comprises, arranged from top to bottom, a mounting plate 2 and a cutting disc as described in Example 1. The top of a support body 11 is rotatably mounted on the mounting plate 2. Connected to the bottom of the mounting plate 2 are multiple shielding plates 3 arranged adjacent to each other, surrounding the cutting disc. While the cutting disc is cutting the road surface, the shielding plates 3 maintain contact with the road surface.

[0059] With the road leveling device configured in this way, the debris splashed out by the cutting disc when it rotates to cut the rock can be blocked within the shielding plate 3, thus preventing the debris from flying out and causing damage.

[0060] Preferably, each shielding plate 3 is connected to the mounting plate 2 via a spring. This allows the shielding plates 3 to rise and fall under the action of the springs when they encounter uneven road surfaces as the road-leveling device moves with the vehicle, ensuring that the shielding plates 3 maintain contact with the road surface without affecting the vehicle's progress.

[0061] Preferably, the shielding panels 3 are made of a flexible material. This allows the multiple flexible shielding panels 3 to bend and deform when they come into contact with uneven surfaces as the road-leveling device moves with the vehicle. This ensures that the shielding panels 3 maintain constant contact with the road surface, blocking cutting debris while not hindering the vehicle's progress. Furthermore, when cutting debris strikes the shielding panels 3, the flexible material effectively absorbs the energy. Furthermore, the shielding panels 3 are made of rubber. This minimizes the noise produced by the cutting debris hitting the shielding panels 3.

[0062] Preferably, each shielding plate 3 has a width of 20 to 50 cm, a height of 50 to 100 cm, and a thickness of 2 to 5 cm.

[0063] Furthermore, in this embodiment, a plurality of shielding plates 3 form a square around the cutting disc, with a size of 2.4 m×2.4 m.

[0064] Preferably, as shown in FIG6 , the mounting plate 2 is provided with a mounting opening corresponding to the opening 14 of the support body 11. The top of the support body 11 is provided with a flange 111 surrounding the opening 14, and the flange 111 is rotatably connected to the mounting plate 2. This facilitates the connection of the rotary drive shaft to the cutting disc through the mounting opening; the rotatable connection of the flange 111 to the mounting plate 2 prevents the opening 14 from being exposed to the cutting space of the cutting disc (i.e., the space enclosed by the mounting plate 2 and the shielding plate 3), thereby preventing cutting debris from entering the support body 11 through the opening 14 and affecting the normal operation of the cutting disc.

[0065] Example 5

[0066] As shown in FIG7 and FIG8, this embodiment provides a road surface leveling machine, which includes a vehicle body and a road surface leveling device as described in Example 4. The road surface leveling device is suspended on the vehicle body to contact and engage the road surface, and the vehicle body drives the road surface leveling device to work.

[0067] The vehicle frame comprises a front frame 4 and a rear frame 5, which are articulated in sequence from front to rear, with the front frame 4 being articulated to the rear frame 5 via an articulated joint. The articulated joint enables the front frame 4 to pivot relative to the rear frame 5, for example, to help rotate the road planer when changing its direction of travel, or to perform special or unique tasks, such as operating the road planer in a "yaw" configuration where the rear frame 5 and the front frame 4 are not aligned with each other.

[0068] In order to enable the road finisher to move or travel relative to the ground, the rear frame 5 is supported on drive wheels 6 and the front frame 4 is supported on steering wheels 7 which can be used to turn and steer the road finisher.

[0069] To rotate the drive wheels 6, the road shaving machine includes an engine housed on the rear frame 5 and connected to the drive wheels 6 via a drivetrain. The drivetrain includes a transmission or other components for assisting and regulating the transmission of power to the machine. The engine can be any suitable type of engine, including, for example, a diesel engine, a spark-ignition gasoline engine, a natural gas engine, or any other engine known in the art. In addition to providing power to the drive wheels 6, the engine is operably associated with a hydraulic system that supplies pressurized hydraulic fluid to various hydraulic actuators and components located around the road shaving machine, aiding its operation and maneuverability.

[0070] In order to accommodate the operator of the road grader, a cab is mounted on the rear frame 5 .

[0071] The road leveler also includes a tie rod 9 disposed below the front frame 4. Tie rod 9 may be an A-frame truss-like structure connected to the front end of the front frame 4 via a multi-dimensional universal joint (e.g., a ball-and-socket joint). Tie rod 9 extends from the universal joint approximately rearward to the front side of the cab and may be supported generally horizontally above the road surface. The road leveler is mounted on and below the A-frame truss-like structure. Specifically, a mounting plate 2 of the road leveler is mounted on the A-frame truss-like structure.

[0072] In order to raise and lower the road grading device relative to the ground, the road grading machine includes hydraulically extendable and retractable linear actuators, such as a first lifting cylinder 41 and a second lifting cylinder 42. The first lifting bar is arranged on the left side of the front frame 4, one end of the first lifting bar is connected to the front frame 4, and the other end of the first lifting bar is connected to the A-frame truss structure; the second lifting bar is arranged on the right side of the front frame 4, one end of the second lifting bar is connected to the front frame 4, and the other end of the second lifting bar is connected to the A-frame truss structure.

[0073] Thus, the height of the road leveling device can be raised and lowered by simultaneously extending or retracting the first and second lifting cylinders 41 and 42 ; and the cutting slope of the road leveling device can be adjusted by independently extending and retracting the first and second lifting cylinders 41 and 42 .

[0074] Preferably, the road leveler comprises a rotary drive assembly 10 mounted on the A-frame truss structure or the mounting plate 2, and the rotary drive assembly 10 is in driving connection with the cutting disc.

[0075] It should be noted that the rotary drive assembly 10 is in transmission connection with the cutting disc, and can drive the cutting disc to rotate while also enabling the cutting disc's rotational speed to be adjusted. Specifically, the cutting disc's rotational speed can be adjusted within a range of 10 rpm to 2000 rpm.

[0076] Preferably, the engine is operatively connected to the rotary drive assembly 10. Specifically, the engine is sequentially connected to the drive wheels 6 and the rotary drive assembly 10 through a transmission and a transfer case. Furthermore, the transfer case is connected to the rotary drive assembly 10 through a universal joint 101. Alternatively, the engine is connected to the drive wheels 6 and the rotary drive assembly 10 through a transmission.

[0077] In addition to the above-mentioned driving modes, the rotary drive component 10 can also be: a. The rotary drive component 10 is an electric motor, and the power generated by the engine drives the generator to operate, converting kinetic energy into electrical energy, which is transmitted to the electric motor, and the electric motor drives the cutting disc to rotate; b. The rotary drive component 10 is a hydraulic motor, and the power of the engine drives the hydraulic pump, so that the hydraulic pump provides high-pressure liquid to flow to the hydraulic motor, drives the hydraulic motor to rotate, and then drives the cutting disc to rotate; c. The rotary drive component 10 is an air compressor motor, and the power of the engine drives the air pump, so that the air pump provides high-pressure air to flow to the air compressor motor, drives the air compressor motor to rotate, and then drives the cutting disc to rotate; d. The rotary drive component 10 is an electric motor, and the power source for driving the electric motor is not an engine in the traditional sense, but a battery pack. The battery pack serves as the power source of the entire flattener. Part of the power is used to drive the drive wheel 6 to move, and part is used to drive the electric motor to rotate, thereby driving the cutting gear disc to rotate, so as to achieve the purpose of flattening hard objects such as protruding rocks on the ground.

[0078] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0079] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0080] In the present invention, unless otherwise expressly specified or limited, when a first feature is “above” or “below” a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0081] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0082] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A road cutting cutter disc, characterized in that: The invention comprises a disc-shaped support body (11), wherein the support body (11) has a circumferential surface and a bottom surface arranged in sequence from top to bottom, wherein the bottom surface is arranged toward the road surface, and the circumferential surface surrounds the bottom surface and is connected to the bottom surface along the edge of the bottom surface; a plurality of first cutting teeth (12) are arranged on the bottom surface around the rotation axis of the support body (11), and a plurality of second cutting teeth (13) are arranged on the circumferential surface around the rotation axis of the support body (11).

2. The road cutting disc according to claim 1, characterized in that A cavity is provided inside the supporting body (11).

3. The road cutting disc according to claim 2, characterized in that An opening (14) communicating with the cavity is provided on the top of the supporting body (11), and a rotating drive shaft mounting position (15) is provided at a position corresponding to the opening (14) in the cavity.

4. The road cutting disc according to claim 1, wherein: A plurality of first cutting teeth (12) are arranged in a circular pattern around the rotation axis of the support body (11) on the bottom surface, and a plurality of second cutting teeth (13) are arranged in a circular pattern around the rotation axis of the support body (11) on the circumferential surface; or, A plurality of first cutting teeth (12) are arranged in a spiral arrangement around the rotation axis of the support body (11) on the bottom surface, and a plurality of second cutting teeth (13) are arranged in a spiral arrangement around the rotation axis of the support body (11) on the circumferential surface.

5. The road cutting disc according to claim 4, characterized in that On the bottom surface, the first cutting teeth (12) extend in the direction of the circular arrangement and are inclined downward; on the circumferential surface, the second cutting teeth (13) extend in the direction of the circular arrangement and are inclined downward; or, On the bottom surface, the first cutting teeth (12) extend in the direction of the spiral arrangement and are inclined downward; on the circumferential surface, the second cutting teeth (13) extend in the direction of the spiral arrangement and are inclined downward.

6. The road cutting disc according to claim 1, wherein: The first cutting teeth (12) are detachably connected to the supporting body (11), and the second cutting teeth (13) are detachably connected to the supporting body (11).

7. A road cutting device, characterized in that: It comprises mounting plates (2) arranged in sequence from top to bottom and a cutting disc as described in any one of claims 1 to 6, the top of the supporting body (11) is rotatably mounted on the mounting plate (2), and a plurality of shielding plates (3) arranged around the cutting disc are connected to the bottom surface of the mounting plate (2), and the plurality of shielding plates (3) are arranged close to each other; during the process of the cutting disc cutting the road surface, the plurality of shielding plates (3) always keep in contact with the road surface.

8. The road surface cutting device according to claim 7, characterized in that: Each shielding plate (3) is connected to the mounting plate (2) via a spring.

9. A road leveling machine, characterized in that: The vehicle comprises a vehicle body and a cutting disc according to any one of claims 1 to 6, wherein the cutting disc is suspended on the vehicle body to contact and engage a road surface, and the vehicle body drives the cutting disc to work.

10. The road planer according to claim 9, characterized in that Also included is a rotation drive assembly (10); The frame of the vehicle body includes a front frame (4) and a rear frame (5) which are hinged in sequence from front to rear, the rear frame (5) is supported on a driving wheel (6), the front frame (4) is supported on a steering wheel (7), an engine is provided on the rear frame (5), a pull rod (9) is provided below the front frame (4), the front end of the pull rod (9) is connected to the front end of the front frame (4) through a multi-dimensional universal joint, and the rear end of the pull rod (9) is connected to the front frame (4) through a first linear actuator and a second linear actuator which are respectively located on the left and right sides of the front frame (4); The rotary drive assembly (10) and the cutting disc are both mounted on the pull rod (9), and the cutting disc is located below the pull rod (9). The rotary drive assembly (10) is in transmission connection with the cutting disc; and the engine is in transmission connection with the drive wheel (6) and the rotary drive assembly (10), respectively.

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