A road drilling machine

Abstract

This application relates to a road drilling machine, comprising a body, a drill bit assembly, a drive motor, and a dust cover assembly. The drill bit assembly is rotatably connected to the body, and the drive motor is connected to the body and drives the drill bit assembly to rotate. The dust cover assembly is movably connected to the body, with its opening facing away from the body. The dust cover assembly is movable relative to the body along the rotation axis of the drill bit assembly, and circumferentially surrounds the drill bit assembly along its rotation axis. This application reduces the amount of dust raised during the drilling machine's operation, thereby reducing environmental pollution.

Description

Technical Field

[0001] This application relates to the field of drilling machines, and more particularly to a drilling machine for road use. Background Technology

[0002] Currently, with the development of the times and the progress of society, more and more roads are being rebuilt or widened, and old roads generally need to be demolished.

[0003] In related technologies, drilling machines are often used in road demolition work. A drilling machine includes a drill bit assembly in the main body, and an electric motor is installed in the main body. The electric motor is used to drive the drill bit to rotate. While the drill bit is rotating, it slowly moves down along the road surface. During this process, the high-speed rotating drill bit can drill holes in the road surface.

[0004] Regarding the aforementioned technologies, as the drilling machine gradually inserts itself into the ground during operation, the drill bit generates intense friction with the ground, thus raising a large amount of dust and causing significant environmental pollution. Summary of the Invention

[0005] In order to reduce the amount of dust raised during the operation of the drilling machine, thereby reducing environmental pollution, this application provides a road drilling machine.

[0006] The road drilling machine provided in this application adopts the following technical solution:

[0007] A road drilling machine includes a body, a drill bit assembly, a drive motor, and a dust cover assembly. The drill bit assembly is rotatably connected to the body, and the drive motor is connected to the body and drives the drill bit assembly to rotate. The dust cover assembly is movably connected to the body, with its opening facing away from the body. The dust cover assembly is movable relative to the body along the rotation axis of the drill bit assembly and circumferentially surrounds the drill bit assembly along its rotation axis.

[0008] By adopting the above technical solution, when the drill bit contacts the road surface, the edge of the dust cover assembly's opening can also contact the ground. At this time, the space enclosed by the dust cover assembly and the ground can completely enclose the drill bit assembly. During operation, most of the dust raised by the drill bit assembly due to friction with the ground during high-speed rotation is blocked by the inner wall of the dust cover assembly. Therefore, this solution can significantly reduce the amount of dust raised by the drill bit assembly during operation, ultimately reducing environmental pollution. Furthermore, the dust cover assembly is fixed relative to the ground but can move relative to the main body. Therefore, as the drill bit assembly gradually penetrates deeper into the ground, the dust cover assembly can guide the drill bit assembly, reducing its swaying during operation and improving its working accuracy.

[0009] Preferably, it also includes a dust collection component, which includes a wind-generating component, a dust collection duct, and a dust collection component. The air inlet of the dust collection duct is connected to the dust cover component, and the air outlet of the dust collection duct is connected to the dust collection component. The wind-generating component can generate airflow along the dust collection duct. The dust cover component is provided with ventilation holes.

[0010] By adopting the above technical solution, during the operation of the drill bit assembly, the air-generating component is activated, which generates airflow along the dust suction pipe. The airflow flows into the space enclosed by the dust cover assembly and the ground along the vent, and simultaneously flows out of the space enclosed by the dust cover assembly and the ground along the dust suction pipe. Finally, the airflow flows into the dust collection component. Therefore, the dust generated by the friction between the drill bit assembly and the road can be sucked out of the dust cover assembly by the dust suction component, and the dust eventually flows into the dust collection component with the airflow. Thus, this solution can reduce the dust raised by the drill bit assembly during operation while collecting the dust to a large extent, ultimately further reducing the pollution to the environment.

[0011] Preferably, both the dust suction pipe and the vent are provided in multiples. The air inlets of the dust suction pipe are evenly distributed circumferentially along the rotation axis of the drill bit assembly, and the air inlets of the dust suction pipe are located near the edge of the opening of the dust cover assembly. The vents are evenly distributed circumferentially along the rotation axis of the drill bit assembly, and the vents are located away from the edge of the opening of the dust cover assembly.

[0012] By adopting the above technical solution, the air inlet of the dust collection pipe is evenly distributed circumferentially along the rotation axis of the drill bit assembly, and the vent holes are also evenly distributed circumferentially along the rotation axis of the drill bit assembly. Furthermore, the air inlet of the dust collection pipe assembly is located near the side edge of the dust cover assembly opening, while the vent holes are located away from the side edge of the dust cover assembly opening. Therefore, this solution can further allow the air to flow within the space enclosed by the dust cover assembly and the ground, thereby enabling the dust collection assembly to absorb dust within this space to a greater extent. Ultimately, this solution can more thoroughly collect the dust generated during the operation of the drill bit assembly, further reducing environmental pollution.

[0013] Preferably, the dust extraction duct is made of a flexible material, one end of the air generating component is connected to the air outlet of all the dust extraction ducts, and the other end of the air generating component is connected to the dust collection component.

[0014] By adopting the above technical solution, the air-generating component and dust collection component are placed on the ground. When drilling is required along different areas of the road surface, the main body can be moved. Since the dust collection pipe is made of flexible material, the dust collection pipe assembly can deform with the movement of the main body, eliminating the need to change the position of the air-generating component and dust collection component. Therefore, this solution is more convenient when changing the position of the main body. In addition, this solution can generate airflow in all dust collection pipes simultaneously through a single air-generating component, making the structure more compact and the operation more convenient.

[0015] Preferably, the dust cover assembly is provided with a dustproof tube, one end of which is connected to a vent along the outer side wall of the dust cover assembly, and the other end of which is connected to the air.

[0016] By adopting the above technical solution, the dustproof pipe is connected to the ventilation hole along the outer wall of the dustproof cover. When the drill assembly is drilling and the dust suction assembly is turned on, the dust in the space enclosed by the dustproof cover assembly and the ground is connected to the air through the ventilation hole. Therefore, the dust in the space enclosed by the dustproof cover assembly and the ground may flow back into the air through the ventilation hole. In this solution, the dust must pass through the dustproof pipe when it flows into the air through the ventilation hole. Therefore, this solution can increase the difficulty of the dust flowing into the air through the ventilation hole, thereby further reducing the degree of dust raising and ultimately further reducing the pollution to the environment.

[0017] Preferably, the dustproof tube includes a straight section and a curved section. One end of the curved section is connected to the vent, and the other end of the curved section is connected to the straight section. The extension direction of the straight section is parallel to the rotation axis of the drill bit assembly. The curved section is Z-shaped, and the fitted curve of the curved section is coplanar with the fitted line segment of the straight section.

[0018] By adopting the above technical solution, as dust flows out along the dustproof pipe, it needs to pass through both a curved section and a straight section. Since the curved section is shaped like a "Z" and the airflow continuously flows along the dustproof pipe towards the vent, the difficulty of dust flowing back along the curved section to the straight section is greatly increased. At the same time, under normal circumstances, the rotation axis of the drill bit assembly is set perpendicular to the horizontal plane. Therefore, in this solution, the straight section is also set perpendicular to the horizontal plane. When dust flows back in the straight section, it is simultaneously subjected to gravity and the resistance of the counter-flowing air. The difficulty of dust flowing back into the air along the straight section is also increased. Therefore, this solution can further reduce the degree of dust raising and ultimately further reduce the pollution to the environment.

[0019] Preferably, an elastic element is provided between the body and the drill bit assembly. The elastic element can provide elastic force to the body and the drill bit assembly, and the direction of the elastic force provided by the elastic element is along the rotation axis of the drill bit assembly. As the drill bit assembly moves away from the dust cover assembly, the elastic force of the elastic element gradually increases.

[0020] By adopting the above technical solution, the elastic force provided by the elastic element generates pressure between the dust cover assembly and the ground, allowing the dust cover assembly to adhere tightly to the ground. This reduces the size of the gap between the dust cover and the ground, making it difficult for dust to escape through the gap, ultimately further reducing environmental pollution. Furthermore, as the drill bit assembly penetrates deeper into the ground, the elastic force of the elastic element increases, thus increasing the normal pressure between the dust cover assembly and the ground. It can be inferred that the deeper the drill bit assembly penetrates into the ground, the more stable the dust cover assembly becomes relative to the ground. The dust cover assembly can better reduce the shaking of the drill bit assembly during operation; therefore, this solution also has higher stability.

[0021] Preferably, the elastic element is a spring, the body has an annular wall, the annular wall is cylindrical, and the dust cover assembly is slidably connected to the annular wall via a linear bearing; the body has a first protrusion at one end of the annular wall and a second protrusion at the other end of the annular wall, the first protrusion has a first abutting end face, the second protrusion has a second abutting end face, the first abutting end face and the second abutting end face are arranged opposite to each other, one end of the elastic element abuts against the first abutting end face, the other end of the elastic element abuts against the outer wall of the dust cover assembly, and the second abutting end face can abut against the inner wall of the dust cover assembly.

[0022] By adopting the above technical solution, the dust cover assembly and the main body achieve relative sliding under the cooperation of the linear bearing and the annular wall. The frictional resistance generated during the sliding between the dust cover assembly and the main body is smaller, and the clearance between the linear bearing and the annular wall is smaller, making it difficult for dust to overflow along the gap between the linear bearing and the annular wall. Therefore, this solution can further reduce the degree of dust flying and ultimately reduce the pollution to the environment. In addition, when the elastic element is a spring, the elastic element can provide a more uniform elastic force between the main body and the drill bit assembly, so this solution also has better stability.

[0023] Preferably, the dust cover assembly has a bowl-shaped structure and is made of a light-transmitting material.

[0024] By adopting the above technical solution, when the dust cover assembly has a bowl-shaped structure, the inner wall of the dust cover assembly can guide the dust that is raised, making it less likely for the dust to stick to the inner wall of the dust cover; at the same time, when the dust cover assembly is made of light-transmitting material, people can easily observe the working condition of the drill bit assembly along the outside of the dust cover assembly.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. When the drill bit contacts the road surface, the edge of the dust cover assembly's opening also contacts the ground. The space formed by the dust cover assembly and the ground completely encloses the drill bit assembly. During operation, most of the dust generated by the high-speed rotation of the drill bit assembly is blocked by the inner wall of the dust cover assembly. Therefore, this solution significantly reduces the dust generated by the drill bit assembly during operation, ultimately reducing environmental pollution. Furthermore, the dust cover assembly is fixed relative to the ground but can move relative to the drill body. As the drill bit assembly gradually penetrates deeper into the ground, the dust cover assembly guides the drill bit, reducing its swaying during operation and improving its working accuracy.

[0027] 2. During operation, the air-generating component of the drill bit assembly is activated, generating airflow along the dust extraction pipe. This airflow flows through the vents into the space enclosed by the dust cover assembly and the ground, and simultaneously flows out of the same space along the dust extraction pipe, ultimately flowing into the dust collection component. Therefore, dust generated by the friction between the drill bit assembly and the road can be sucked out of the dust cover assembly and carried by the airflow into the dust collection component. This solution effectively reduces dust generated by the drill bit assembly during operation while significantly collecting it, ultimately further reducing environmental pollution.

[0028] 3. The elastic force provided by the elastic element creates pressure between the dust cover assembly and the ground, allowing the dust cover assembly to adhere tightly to the ground. This reduces the size of the gap between the dust cover and the ground, making it difficult for dust to escape through the gap, ultimately further reducing environmental pollution. Furthermore, as the drill bit assembly penetrates deeper into the ground, the elastic force of the elastic element increases, thus increasing the normal pressure between the dust cover assembly and the ground. It can be inferred that the deeper the drill bit assembly penetrates, the more stable the dust cover assembly becomes relative to the ground. The dust cover assembly can better reduce the shaking of the drill bit assembly during operation; therefore, this solution also has higher stability. Attached Figure Description

[0029] Figure 1 This is an isometric view of a road drilling machine.

[0030] Figure 2 This is a top view of a road drilling machine.

[0031] Figure 3 yes Figure 2 Sectional view along direction A.

[0032] Figure 4 hour Figure 3 Enlarged view at point B in the middle.

[0033] Explanation of reference numerals in the attached drawings: 1. Body; 11. Annular wall; 12. First protrusion; 121. First abutting end face; 13. Second protrusion; 131. Second abutting end face; 2. Drill bit assembly; 3. Drive motor; 4. Dust cover assembly; 41. Vent hole; 42. Dustproof pipe; 421. Straight section; 422. Bending section; 5. Dust suction assembly; 51. Box; 511. First accommodating cavity; 512. Second accommodating cavity; 513. Protruding cavity; 514. Wind baffle; 515. Filter screen; 52. Air generating component; 53. Dust suction pipe; 531. Air inlet; 532. Air outlet; 54. Dust collection component; 6. Elastic element. Detailed Implementation

[0034] The present application will be further described in detail below with reference to all the accompanying drawings.

[0035] This application discloses a road drilling machine.

[0036] Reference Figure 1 and 3 A road drilling machine includes a body 1, a drill bit assembly 2, a drive motor 3, a dust cover assembly 4, and a dust extraction assembly 5. The drill bit assembly 2 is rotatably connected to the body 1, and the drive motor 3 is connected to the body 1, driving the drill bit assembly to rotate. The dust cover assembly 4 is slidably connected to the body 1, and is oriented relative to the body 1 along the rotation axis of the drill bit assembly 2. The opening of the dust cover assembly 4 faces away from the end of the body 1 assembly. When the drill bit assembly 2 is working, the side edge of the opening of the dust cover assembly 4 can be in close contact with the ground, and the space enclosed by the dust cover assembly 4 and the ground can surround the drill bit assembly 2. The dust cover assembly 4 is connected to the dust extraction assembly 5, which is used to remove gas from the space enclosed by the dust cover assembly 4 and the ground. The dust cover assembly 4 also has a vent 41.

[0037] With the above structure, during the operation of the drill bit assembly 2, the edge of the opening of the dust cover assembly 4 can be in close contact with the ground, and the space enclosed by the dust cover assembly 4 and the ground can surround the drill bit assembly 2. Therefore, the dust cover assembly 4 plays a role in hindering the dust generated by the friction between the drill bit assembly 2 and the ground during operation, and the dust is difficult to be raised. Therefore, this solution can greatly reduce the degree of dust raising, thereby reducing environmental pollution.

[0038] Meanwhile, the suction component 5 can draw in air during operation. Therefore, the space enclosed by the vent 41, the dust cover component 4, and the ground, together with the suction component 5, forms an air passage. Dust generated during the operation of the drill bit component 2 can be carried into the suction component 5 by the airflow. In addition, the dust cover component 4 is in contact with the ground, and it can provide some support for the main body 1, reducing the degree of shaking of the drill bit component 2 during operation, and ultimately improving the stability of this solution.

[0039] Reference Figure 1 and 3 Specifically, the main body 1 is a hollow cylinder, and a drive motor 3 is fixedly connected to the inner wall of the main body 1. The drill bit assembly 2 is connected to the shaft of the drive motor 3 and is rotatably connected to the main body 1 through a bearing. The drill bit assembly 2 protrudes from one end of the main body 1. In this embodiment, an operating handle is provided at the end of the main body 1 away from the drill bit assembly 2 for human operation; in other embodiments, the end of the main body 1 away from the drill bit assembly 2 can also be connected to a robotic arm.

[0040] Reference Figure 3 and 4 The main body 1 has an annular wall 11 circumferentially arranged along its axis. The annular wall 11 is cylindrical and is connected to the dust cover assembly 4. The annular wall 11 serves to guide the dust cover assembly 4. The main body 1 has a first protrusion 12 at one end of the annular wall 11 and a second protrusion 13 protruding from the other end of the annular wall 11. The first protrusion 12 and the second protrusion 13 are used to limit the position of the dust cover assembly 4. Both the first protrusion 12 and the second protrusion 13 are annular cylindrical bodies and are circumferentially arranged along the axis of the annular wall 11. From a perspective perpendicular to the axis of the annular wall 11, the first protrusion 12, the annular wall 11, and the second protrusion 13 form an "I" shape. The end face of the first protrusion 12 near the second protrusion 13 is the first abutting end face 121, and the end face of the second protrusion 13 near the first protrusion 12 is the second abutting end face 131.

[0041] With the above structure, as the drill bit assembly 2 gradually penetrates deeper into the ground, the dust cover assembly 4 is fixed relative to the ground, so the dust cover assembly 4 moves relative to the body 1. Since the annular wall 11 guides the dust cover assembly 4, the dust cover assembly 4 can be more stable during its movement relative to the body 1. Therefore, the dust cover assembly 4 can provide better support for the body 1. Thus, this solution can further reduce the degree of shaking during operation and improve stability.

[0042] Reference Figure 3 and 4Specifically, the dust cover assembly 4 is made of a light-transmitting material. The end of the dust cover assembly 4 furthest from the main body 1 has an opening. The cross-sectional area of ​​the dust cover assembly 4 gradually increases along the bottom wall towards the opening. In this embodiment, the dust cover assembly 4 is bowl-shaped; in other embodiments, it can also be conical or other shapes. The axis of the dust cover assembly 4 is collinear with the rotation axis of the drill bit assembly 2. A mounting hole is provided at the center of the bottom wall of the dust cover assembly 4, and a linear bearing is installed within the mounting hole. The dust cover assembly 4 is slidably connected to the annular wall 11 on the main body 1 via the linear bearing. An elastic element 6, which is a spring, is also provided between the dust cover assembly 4 and the main body 1. The elastic element 6 surrounds the annular wall 11, with one end abutting against the first abutting end face 121 on the first protrusion 12, and the other end abutting against the outer wall of the dust cover assembly 4.

[0043] With the above structure, since the dust cover assembly 4 and the body 1 are connected by a linear bearing, the frictional resistance between the dust cover assembly 4 and the body 1 is small during relative movement. At the same time, the fit gap between the dust cover assembly 4 and the body 1 is small, so the dust cover assembly 4 can better support the body 1. This solution is more stable, and dust is difficult to flow out along the gap between the dust cover assembly 4 and the body 1. Therefore, this solution can further reduce the degree of dust raising.

[0044] Furthermore, under the action of the elastic element 6, the dust cover assembly 4 is subjected to pressure from the elastic element 6. The side edge of the opening of the dust cover assembly 4 can generate positive pressure with the ground, making the gap between the dust cover assembly 4 and the ground smaller. Thus, dust is less likely to flow out along the gap between the dust cover assembly 4 and the ground. Therefore, this solution can further reduce the degree of dust stirring. At the same time, as the drill bit assembly 2 penetrates deeper into the ground, the resistance encountered by the drill bit assembly 2 will be greater, and the degree of shaking will also be greater. At this time, the compression of the elastic element 6 will also be greater, so the positive pressure between the dust cover assembly 4 and the ground will be greater, and the dust cover assembly 4 will be more firmly fixed relative to the ground. The dust cover assembly 4 can further reduce the degree of shaking of the drill bit assembly 2 during operation and improve the stability of this solution.

[0045] Reference Figure 1 and 2 Specifically, the dust cover assembly 4 has multiple ventilation holes 41, which are located close to the main body 1 and are evenly distributed circumferentially along the axis of the dust cover assembly 4. The dust cover assembly 4 is connected to the dust collection assembly 5 near the opening side edge. The dust cover assembly 4 is also connected to a dustproof tube 42, which corresponds one-to-one with the ventilation holes 41. One end of the dustproof tube 42 is connected to the ventilation hole 41, and the other end of the dustproof tube 42 is connected to the air. The dustproof tube 42 is used to prevent dust from flowing back into the air along the ventilation hole 41.

[0046] Reference Figure 1 and3 The dustproof pipe 42 includes a straight section 421 and a curved section 422. The curved section 422 is Z-shaped, and each bend in the curved section 422 has a transition arc. One end of the curved section 422 is connected to the vent 41, and the other end is connected to the straight section 421. The straight section 421 has a flared end away from the curved section 422, and the connection between the curved section 422 and the vent 41 also has a flared end. The curve formed by the curved section 422 is coplanar with the line segment formed by the straight section 421, and the extension direction of the straight section 421 is parallel to the rotation axis of the drill bit assembly 2. When the side edge of the dustproof cover assembly 4 is in contact with the ground, the straight section 421 is perpendicular to the ground.

[0047] With the above structure, when the dust collection component 5 draws in air, the airflow passes sequentially through the vent pipe, the space enclosed by the dust cover component 4 and the ground, and the dust collection component 5. Since the height of the vent 41 is greater than the height of the connection between the dust collection component 5 and the dust cover component 4 during operation, and the vent 41 can be directly facing the drill bit component 2, the airflow can bring dust into the dust collection component 5 to a large extent, which improves the dust collection efficiency of this solution and reduces the environmental pollution of this solution.

[0048] In addition, both ends of the dustproof pipe 42 are provided with flared openings. When the airflow enters the dustproof pipe 42, the flared openings on the straight section 421 allow more airflow to enter the dustproof pipe 42, increasing the airflow velocity. When the airflow flows out along the dustproof pipe 42, the flared openings on the curved section 422 allow the airflow to diffuse more when flowing into the dustproof cover assembly 4, thus allowing the airflow to flow through a larger space and ultimately improving the dust collection efficiency. At the same time, during the backflow of dust along the dustproof pipe 42 assembly, the dust will come into contact with the inner wall of the dustproof pipe 42 in the curved section 422 and be blocked. Even if the dust can pass through the curved section 422 and enter the straight section 421, the dust needs to overcome both air resistance and airflow in the straight section 421 to flow out along the straight section 421. Therefore, this solution further increases the difficulty of dust flowing back into the air along the dustproof pipe 42; ultimately, this solution can further reduce the possibility of dust being stirred up.

[0049] Reference Figure 1 and 3Specifically, the dust collection assembly 5 includes a housing 51, an air-generating component 52, a dust collection duct 53, and a dust collection component 54. The housing 51 is equipped with a baffle plate 514, which divides the interior of the housing 51 into a first accommodating cavity 511 and a second accommodating cavity 512. The baffle plate 514 has mounting holes. The air-generating component 52 is a fan driven by an electric motor and is fixedly connected to the baffle plate 514 through the mounting holes. The dust collection duct 53 is made of flexible material and has multiple ducts. The air inlet 531 of the dust collection duct 53 is connected to the outer wall of the dust cover assembly 4. The air inlets 531 of the dust collection duct 53 are evenly distributed circumferentially along the axis of the dust cover assembly 4. The air outlet 532 of the dust collection duct 53 is connected to the first accommodating cavity 511.

[0050] Reference Figure 3 The dust collection component 54 is a cuboid container with an opening on the upper end face. The dust collection component is disposed in the second accommodating cavity 512. The box body 51 has a protruding cavity 513 along the top wall of the second accommodating cavity 512. The protruding cavity 513 is cuboid and is disposed directly above the dust collection component 54. The top wall of the protruding cavity 513 is higher than the top walls of other parts of the box body 51. The box body 51 has a filter screen 515 for filtering dust on the top wall of the protruding cavity 513.

[0051] With the above structure, since the dust suction pipe 53 is made of flexible material, the housing 51 does not need to be moved when the drill assembly 2 needs to be repositioned during operation, making the operation of this solution more convenient. When the air-generating component 52 is turned on, the airflow carries dust along the dust suction pipe 53 into the first receiving chamber 511. Then, the airflow passes through the baffle plate 514 along the air-generating component 52 and enters the second receiving chamber 512. The baffle plate 514 has the effect of preventing gas backflow. Next, when the airflow flows into the protruding chamber 513 and comes into contact with the filter screen 515, the filter screen 515 blocks the dust from flowing out of the housing 51. Finally, the dust can flow into the dust collection component 54 along the protruding chamber 513.

[0052] In summary, this solution significantly reduces the amount of dust generated during the operation of the drill bit assembly 2 by using the dust cover assembly 4 to surround the drill bit assembly 2 with the ground, thereby reducing environmental pollution. Furthermore, the dust cover assembly 4 is pressed firmly against the ground by the elastic element 6, thus providing support for the main body 1 and improving the stability of the solution during operation. The dust collection assembly 5 generates airflow, which sequentially passes through the vent 41, the space enclosed by the dust cover assembly 4 and the ground, and then through the dust collection assembly 5. The airflow carries dust into the dust collection assembly 5, ultimately completing the dust collection.

[0053] The implementation principle of a road drilling machine according to an embodiment of this application is as follows: when the drill bit assembly 2 contacts the ground, the dust cover assembly 4 contacts the ground, and the drill bit assembly 2 is placed in the space enclosed by the dust cover assembly 4 and the ground. Therefore, the dust cover assembly 4 can prevent dust generated during the operation of the drill bit from flying. In addition, the dust cover assembly 4 is fixed relative to the ground, so the dust cover assembly 4 can support the body 1 and improve the stability of this solution. At the same time, the dust suction assembly 5 can generate airflow, and the airflow carries the dust into the dust suction assembly 5 to complete the dust collection.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A road drilling machine, characterized in that: The device includes a body (1), a drill bit assembly (2), a drive motor (3), and a dust cover assembly (4). The drill bit assembly (2) is rotatably connected to the body (1), and the drive motor (3) is connected to the body (1) and is used to drive the drill bit assembly (2) to rotate. The dust cover assembly (4) is movably connected to the body (1), and the opening of the dust cover assembly (4) faces away from the body (1). The dust cover assembly (4) can move relative to the body (1) along the rotation axis of the drill bit assembly (2). The dust cover assembly (4) circumferentially surrounds the drill bit assembly (2) along the rotation axis of the drill bit assembly (2). It also includes a dust collection assembly (5), which includes a wind-generating component (52), a dust collection pipe (53), and a dust collection component (54). The air inlet (531) of the dust collection pipe (53) is connected to the dust cover assembly (4), and the air outlet (532) of the dust collection pipe (53) is connected to the dust collection component (54). The wind-generating component (52) can generate airflow along the dust collection pipe (53). The dust cover assembly (4) is provided with a vent (41). Multiple suction pipes (53) and ventilation holes (41) are provided. The air inlets (531) of the suction pipes (53) are evenly distributed circumferentially along the rotation axis of the drill assembly (2). The air inlets (531) of the suction pipes (53) are located near the edge of the opening of the dust cover assembly (4). The ventilation holes (41) are evenly distributed circumferentially along the rotation axis of the drill assembly (2). The ventilation holes (41) are located away from the edge of the opening of the dust cover assembly (4). The dust cover assembly (4) is provided with a dust cover tube (42), one end of which is connected to the vent (41) along the outer side wall of the dust cover assembly (4), and the other end of which is connected to the air. The dustproof tube (42) includes a straight section (421) and a curved section (422). One end of the curved section (422) is connected to the vent (41), and the other end of the curved section (422) is connected to the straight section (421). The extension direction of the straight section (421) is parallel to the rotation axis of the drill bit assembly (2). The curved section (422) is in the shape of a "Z". The fitted curve of the curved section (422) is coplanar with the fitted line segment of the straight section (421).

2. The road drilling machine according to claim 1, characterized in that: The dust extraction duct (53) is made of flexible material. One end of the air generating component (52) is connected to the air outlet (532) of all the dust extraction ducts (53), and the other end of the air generating component (52) is connected to the dust collection component (54).

3. A road drilling machine according to claim 1, characterized in that: An elastic element (6) is provided between the body (1) and the dust cover assembly (4). The elastic element (6) can provide elastic force to the body (1) and the drill bit assembly (2). The direction of the elastic force provided by the elastic element (6) is along the rotation axis of the drill bit assembly (2). As the drill bit assembly (2) moves away from the dust cover assembly (4), the elastic force of the elastic element (6) gradually increases.

4. A road drilling machine according to claim 3, characterized in that: The elastic element (6) is a spring. The body (1) is provided with an annular wall (11), which is cylindrical. The dust cover assembly (4) is slidably connected to the annular wall (11) through a linear bearing. The body (1) is provided with a first protrusion (12) at one end of the annular wall (11) and a second protrusion (13) at the other end of the annular wall (11). The first protrusion (12) is provided with a first abutting end face (121), and the second protrusion (13) is provided with a second abutting end face (131). The first abutting end face (121) and the second abutting end face (131) are arranged opposite to each other. One end of the elastic element (6) abuts against the first abutting end face (121), and the other end of the elastic element (6) abuts against the outer wall of the dust cover assembly (4). The second abutting end face (131) can abut against the inner wall of the dust cover assembly (4).

5. A road drilling machine according to claim 1, characterized in that: The dust cover assembly (4) has a bowl-shaped structure and is made of a light-transmitting material.

Images