Coring and drilling device

Abstract

The coring and drilling device comprises a device body, an output shaft and a liquid spraying component, the output shaft is rotatably supported on the device body, a conveying channel with an opening in the front end is formed in the output shaft, and the liquid spraying component is connected to the front end of the output shaft. The liquid spraying component is provided with a liquid inlet channel communicating with the conveying channel and a plurality of liquid spraying windows circumferentially distributed in the liquid inlet channel and communicating with the liquid inlet channel, the end, away from the device body, of the output shaft is detachably connected with a drilling piece, and a cavity used for containing machined materials is formed in the drilling piece. The liquid spraying component is at least partially contained in the cavity of the drilling piece so as to guide cooling liquid which flows through the liquid inlet channel and enters the cavity to flow to the inner wall of the cavity, and therefore the drilling piece can be cooled.

Description

Technical Field

[0001] The utility model relates to the field of electric tools, in particular to a coring and drilling device. Background Art

[0002] During drilling operations, the drill bit installed in existing drilling devices gradually reaches a high temperature over time. If the drill bit is not cooled down during this period, it is very likely to deform or even damage at high temperatures, thus affecting the subsequent use of the drill bit. Furthermore, if the hot drill bit is not cooled down in time, if a worker accidentally touches the drill bit, there is a risk of burns.

[0003] Therefore, most existing drilling devices require water operation, that is, cooling water is sprayed on the outer wall of the drill bit through the output shaft to provide cooling water to the drill bit surface from the outside, so that the cooling water can flow from the surface of the drill bit to the drilled part. However, in the early stage of drilling, this method will cause the cooling water mixed with drill cuttings to be splashed on the work site by the running drill bit, which may interfere with the workers' vision.

[0004] In addition, for some special places where water operations cannot be carried out, existing drilling devices mostly use the method of cooling the drill bit internally, that is, setting a water outlet channel leading to the inside of the drill bit, and supplying cooling water to the channel so that the high-temperature drill bit is filled with cooling water and can be cooled. However, this not only leads to an increase in the amount of cooling water used, but also makes it difficult for the cooling water to cool the drill bit evenly during the flow process, so that some parts of the inner wall of the drill bit cannot be cooled quickly.

[0005] Chinese patent publication number CN111805392A discloses a grinding and drilling sampling tool for obtaining cylindrical test blocks and a method of using the same. The tool installs a spraying structure inside the drill bit so that cooling water flows toward the inner wall of the drill bit in the form of a spray to cool the inner wall of the drill bit.

[0006] However, this method also has corresponding defects. For example, when the spraying structure is installed too close to the drill teeth of the drill bit, it will not only cause the drilling depth to become shallower, but also cause the outlet of cooling water to the inner wall of the drill bit to increase, thereby reducing the speed of cooling water flowing out of the outlet. As a result, the spraying range of the cooling water will become smaller and it will be difficult to spray to all positions on the inner wall of the drill bit, resulting in the cooling effect of the drill bit being affected. Utility Model Content

[0007] In order to solve the above technical problems and achieve at least one advantage of the present invention, the present invention provides a coring drilling device, which includes:

[0008] Device body;

[0009] an output shaft rotatably supported on the device body, and having an interior of the output shaft having a conveying passage with an open front end;

[0010] In which, the core drilling device also includes a liquid sprinkling component, which is connected to the front end of the output shaft, and the liquid sprinkling component has a liquid inlet channel connected to the conveying channel, and a plurality of liquid dispersion windows circumferentially distributed on the liquid inlet channel and connected thereto, and the coolant flowing out of the liquid inlet channel is diffused to the surroundings through the liquid dispersion windows.

[0011] According to one embodiment of the present invention, a drilling member is detachably connected to the end of the output shaft away from the device body, and a cavity is provided inside the drilling member for accommodating the material to be processed. When the drilling member is connected to the output shaft, the liquid dispersion window is at least partially accommodated in the cavity of the drilling member to guide the coolant flowing through the liquid inlet channel and entering the cavity to flow toward the inner wall of the cavity.

[0012] According to one embodiment of the present utility model, the liquid sprinkling component includes a liquid inlet component and a stopper, the liquid inlet component has a liquid inlet, a liquid outlet, and the liquid inlet channel arranged between the liquid inlet and the liquid outlet and connected with the liquid inlet and the liquid outlet, the liquid outlet is arranged to extend toward the axial direction of the drilling component, and the side wall of the liquid inlet component is provided with a plurality of liquid dispersion windows connected with the liquid outlet and the cavity, the direction of the liquid dispersion windows is set toward the radial direction of the drilling component, the stopper is arranged in the cavity of the drilling component, the stopper has a guide portion for guiding the flow of coolant, the guide portion has an arc-shaped guide surface whose arc surface convex toward the liquid outlet, and the guide portion remains in the flow direction of the coolant flowing through the liquid inlet channel.

[0013] According to one embodiment of the present utility model, the liquid inlet component includes a plurality of connecting ribs and a liquid inlet body, wherein each of the connecting ribs is arranged between the liquid inlet body and the block, and the connecting ribs are arranged to extend in a radial direction, and at least one liquid dispersion window is formed between two adjacent connecting ribs, and the plurality of liquid dispersion windows are arranged at circumferential positions of the liquid inlet component with the axial direction of the liquid inlet component as the center line, and the liquid dispersion windows are at least partially retained in the cavity of the drilling component, and the liquid inlet body is arranged to form at least part of the liquid inlet channel.

[0014] According to one embodiment of the present invention, the liquid inlet body is at least partially inserted into the delivery channel of the output shaft, and at the same time fixedly connected to the inner wall forming the delivery channel, and the block is located at the liquid outlet of the liquid inlet channel and forms the guide portion toward the liquid outlet.

[0015] According to an embodiment of the present invention, the direction of at least one of the liquid diffusion windows is set to form a predetermined angle with the axial direction of the liquid inlet component and tends to be toward the end of the drilling component away from the output shaft.

[0016] According to an embodiment of the present invention, the outer wall of the output shaft has a mounting structure for fixedly connecting with the drilling member, and the delivery channel is provided through both ends of the output shaft.

[0017] According to an embodiment of the present invention, the device body is arranged to extend horizontally from the middle to form a handheld portion, and the device body is further provided with a driving component, and the output shaft is transmission-connected to the driving component.

[0018] According to one embodiment of the present invention, the coring and drilling device further includes a liquid supply component, which extends to form a liquid pipeline, and the liquid pipeline is arranged to at least partially penetrate the delivery channel of the output shaft and the liquid inlet channel of the liquid inlet member at the same time, and the liquid inlet channel is connected to the port of the liquid pipeline, and when the liquid supply component is immersed in coolant, the liquid supply component guides the coolant to be sucked into the liquid pipeline to pass the coolant into the liquid inlet channel.

[0019] According to one embodiment of the present invention, the coring and drilling device further includes a sealing unit, which includes a sealing element and a fastener, wherein the sealing element is installed in the conveying channel of the output shaft and is located in the gap between the inner wall of the output shaft and the outer wall of the liquid pipe, and is passed through the liquid pipe, the fastener is installed in a predetermined position adjacent to the conveying channel and the sealing element, and is passed through the liquid pipe, and the fastener is configured to abut the sealing element. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure shows a structural diagram of the coring and drilling device of the present invention.

[0021] Figure 2 A cross-sectional view of the core drilling device of the present invention is shown. Figure 1 .

[0022] Figure 3 A cross-sectional view of the core drilling device of the present invention is shown. Figure 2 .

[0023] Figure 4 for Figure 2 An enlarged view of a portion of the structure of the core drilling device is shown.

[0024] Figure 5 The figure shows the structure of the coring drilling device of the present invention in a state of pouring coolant.

[0025] Figure 6 A three-dimensional diagram of the liquid spraying component in the core drilling device of the present invention is shown. DETAILED DESCRIPTION

[0026] The following description is intended to disclose the present invention and enable those skilled in the art to implement the present invention. The preferred embodiments described below are provided for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0027] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0028] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0029] refer to Figures 1 to 6 A core drilling device according to a preferred embodiment of the present invention will be described in detail below. The core drilling device includes a device body 10, an output shaft 20 and a liquid sprinkling component 30, wherein the output shaft 20 is rotatably supported on the device body 10.

[0030] It should be noted that the end of the output shaft 20 away from the device body 10 can be detachably connected to multiple drilling parts 90 of different models according to the operator's choice, and then when one of the drilling parts 90 is connected to the output shaft 20 and is driven by the output shaft 20 to rotate, the drilling part 90 can drill a hole at the position to be drilled.

[0031] Specifically, in one embodiment, the outer wall of the output shaft 20 has a mounting structure 21 for connecting to the drilling member 90. In one embodiment, the mounting structure 21 is configured as a thread, that is, the output shaft 20 can be connected to the drilling member 90 via the mounting structure 21 in a threaded connection. In another embodiment, the mounting structure 21 is configured as a snap-fit, so that the drilling member 90 can be snap-fitted to the mounting structure 21.

[0032] The output shaft 20 has a delivery channel 201 with an open front end for delivering coolant.

[0033] It is worth mentioning that the drilling member 90 has a cavity 901 therein. Therefore, when the drilling member 90 is drilling, the coring drilling device can deliver coolant to the liquid dispensing member 30 through the delivery channel 201 of the output shaft 20. The coolant is then dispensed by the liquid dispensing member 30 and flows into the cavity 901 of the drilling member 90, thereby cooling the drilling member 90. It is understood that when the coring drilling device drives the drilling member 90 to perform drilling operations in a work area such as a wall, the cavity 901 can accommodate any material being processed that falls during the drilling operation.

[0034] Specifically, the liquid sprinkling member 30 is connected to the front end of the output shaft 20, and the liquid sprinkling member 30 has a liquid inlet channel 301 connected to the delivery channel 201, and a plurality of liquid dispersion windows 302 distributed circumferentially in the liquid inlet channel 301 and connected to the liquid inlet channel 301. The liquid dispersion windows 302 are connected to the cavity 901 formed inside the drilling member 90. In addition, the liquid dispersion windows 302 are at least partially accommodated in the cavity 901 of the drilling member 90.

[0035] It can be understood that the coolant flowing out of the delivery channel 201 is poured through the liquid diffusion window 302 after flowing through the liquid inlet channel 301 .

[0036] In a preferred embodiment, the delivery channel 201 is provided through both ends of the output shaft 20 to allow the coolant to flow in from the axial direction of the output shaft 20 .

[0037] Specifically, in one embodiment, the liquid dispensing member 30 includes a liquid inlet 31 and a stopper 32. The liquid inlet 31 has a liquid inlet 3101, a liquid outlet 3102, and a liquid inlet channel 3103 disposed between and communicating with the liquid inlet 3101 and the liquid outlet 3102. The liquid inlet channel 3103 is connected to the delivery channel 201 and the cavity 901. A plurality of liquid dispersion windows 3104 are provided on the sidewall of the liquid inlet 31, communicating with the liquid outlet 3101 and the cavity 901. The liquid dispersion windows 3104 are oriented at a predetermined angle to the axial direction of the liquid inlet 31. The plurality of liquid dispersion windows 3104 are arranged at circumferential positions of the liquid inlet 31 with the axial direction of the liquid inlet 31 as the centerline, and the liquid dispersion windows 3104 are at least partially retained in the cavity 901.

[0038] It can be understood that in this embodiment, after the coolant is introduced into the liquid inlet channel 3103 of the liquid inlet member 31 through the delivery channel 201 , the coolant then flows out from each of the liquid dispersion windows 3104 and into the cavity 901 to cool the drilling member 90 .

[0039] Specifically, in one embodiment, the liquid inlet member 31 includes a plurality of connecting ribs 311 and a liquid inlet body 312, wherein each connecting rib 311 is disposed between the liquid inlet body 312 and the stopper 32, and the connecting ribs 311 are configured to extend in a radial direction, and at least one liquid diffusion window 3104 is formed between two adjacent connecting ribs 311. The liquid inlet body 312 is configured to form at least a portion of the liquid inlet channel 3103.

[0040] In a preferred embodiment, a plurality of liquid diffusion windows 3104 are formed between two adjacent connecting ribs 311 .

[0041] Preferably, among the multiple liquid dispersion windows 3104 formed between two adjacent connecting ribs 311, at least one is directed radially toward the drilling member 90, and at least another is directed at a predetermined angle to the axial direction of the liquid inlet member 31 and tends toward the end of the drilling member 90 away from the output shaft 20.

[0042] In one embodiment, the liquid inlet body 312 is at least partially inserted into the delivery channel 201 of the output shaft 20 , and is fixedly connected to an inner wall forming the delivery channel 201 .

[0043] In this way, the cooling liquid flowing in through the liquid inlet channel 3103 can be guided by the liquid diffusion window 3104 and quickly flow toward the inner wall of the drilling component 90 , so that the temperature of the drilling component 90 is reduced.

[0044] The block 32 has a guide portion 321 for guiding the flow of coolant at the outlet of the liquid inlet channel 3103 and facing the liquid outlet 3102. The guide portion 321 has an arc-shaped guide surface that convexly faces the liquid inlet channel 3103, and the guide portion 321 is connected to the portion of each connecting rib 311 that penetrates the cavity 901 so that the liquid inlet component 31 forms the liquid dispersion window 3104, and the guide portion 321 remains in the flow direction of the coolant flowing through the liquid inlet channel 3103. When the coolant enters the liquid inlet channel 3103 of the liquid inlet component 31, the block 32 guides the coolant to flow toward the liquid dispersion window 3104 through the guide portion 321 so that the coolant is poured.

[0045] It can be understood by those skilled in the art that when the coolant is passed from the delivery channel 201 into the liquid inlet channel 3103 of the liquid inlet member 31, the coolant then flows along the liquid inlet channel 3103 to the block 32. At this time, the block 32 passes through the guide portion 321 to guide the flow of the coolant while increasing the flow speed of the coolant, so that after the coolant contacts the guide portion 321, the coolant can quickly flow along the guide portion 321 from each of the liquid dispersion windows 3104 to the inner wall forming the cavity 901.

[0046] In this way, when the coolant is introduced into the liquid inlet channel 3103 of the liquid inlet part 31, the coolant can be quickly poured toward the inner wall of the cavity 901 formed by the drilling part 90 under the action of the guide part 321, so that the drilling part 90 can be quickly cooled from the inside, thereby preventing the coolant mixed with drill cuttings from being splashed on the work site by the operating drilling part 90.

[0047] It is worth mentioning that due to the increase in the flow rate of the coolant, after being poured onto the inner wall of the drilling member 90, the coolant can also be splashed and continue to flow along the extension direction of the inner wall of the drilling member 90, so that the inner wall of the drilling member 90 can be completely cooled. Therefore, when the staff uses the coring drilling device to drive the drilling member 90 upward for drilling operations, the coolant can overcome the effect of gravity and flow from one end of the drilling member 90 to the other end from bottom to top in the cavity 901, so that the drilling member 90 is cooled.

[0048] In addition, when the connection between the liquid inlet member 31 and the stopper 32 is unstable, the output shaft 20 and the drilling member 90 can be directly disassembled to replace the liquid inlet member 31 and the stopper 32 with new ones.

[0049] Preferably, the guide portion 321 of the stopper 32 is disposed at a predetermined position close to the liquid outlet 3102 , so that the size of each liquid diffusion window 3104 is reduced, thereby increasing the speed at which the coolant flows out of each liquid diffusion window 3104 .

[0050] Preferably, the guide portion 321 of the stopper 32 is configured in a shape including but not limited to a hemispherical shape or a conical shape.

[0051] Preferably, the cross-sectional diameter of the stopper 32 is set to be smaller than the cross-sectional diameter of the output shaft 20, so that when the drilling member 90 is connected to the output shaft 20, the liquid inlet member 31 and the stopper 32 of the liquid sprinkling member 30 can follow the output shaft 20 and directly extend into the interior of the drilling member 90. In other words, the output shaft 20 can directly carry the liquid inlet member 31 and the stopper 32 to connect with the drilling member 90, thereby facilitating installation.

[0052] In one embodiment, the guide portion 321 of the block 32 is evenly arranged on the liquid inlet channel 3103 of the liquid inlet member 31 to reduce the size of the outlet port of the liquid inlet channel 3103 allowing the coolant to flow out. As a result, the outflow speed of the coolant from the liquid inlet channel 3103 is increased, so that the flow distance of the coolant after flowing out of the guide portion 321 is increased, so that the inner wall corners of the drilling member 90 can also be cooled by the coolant.

[0053] Preferably, the stopper 32 is integrally recessed inwardly in a direction consistent with the direction in which the guide portion 321 is formed to form a recessed space 3201 , and the inner wall of the recessed space 3201 is connected to the guide portion 321 , so that the stopper 32 forms a convex edge.

[0054] It is understandable that when the coolant flows along the direction of formation of the guide portion 321, part of the coolant will flow along the guide portion 321 and remain on the side of the stopper 32 opposite to the guide portion 321. Therefore, the stopper 32 forms the convex edge to allow this part of the coolant to condense and drip onto the inner wall of the drilling member 90 under the action of gravity.

[0055] In another embodiment, Figure 6As shown, the liquid sprinkling member 30 has a liquid inlet 301, a liquid outlet 302, and a liquid inlet channel 303 arranged between the liquid inlet 301 and the liquid outlet 302 and connected to the liquid inlet 301 and the liquid outlet 302. The liquid inlet 301 is connected to the delivery channel 201 of the output shaft 20, and the liquid outlet 302 is arranged to extend axially toward the drilling member 90. The liquid sprinkling member 30 also forms a plurality of connecting ribs 31 and a guide portion 32, and the guide portion 32 has an arc-shaped guide surface with an arc surface convex toward the liquid inlet 301, and the guide portion 32 is maintained in the flow direction of the coolant flowing through the liquid inlet channel 303, and the guide portion 32 is also arranged in the cavity 901 and connected to each of the connecting ribs 31 to form a plurality of liquid dispersion windows 304. Each of the liquid spreading windows 304 is connected to the liquid outlet 302 and the cavity 901 , and the liquid spreading member 30 arranges each of the liquid spreading windows 304 along a circumferential direction to guide the coolant to flow along the radial direction of the drilling member 90 .

[0056] Preferably, the device body 10 is provided with a hand-held portion 11 extending horizontally from the middle, so that the staff can apply their hands to the hand-held portion 11 to facilitate the staff to hold the core drilling device. In addition, the device body 10 is also provided with a driving member 12, and the output shaft 20 is transmission-connected to the driving member 12, and then after the drilling member 90 is connected to the output shaft 20, the driving member 12 can drive the output shaft 20 to rotate the drilling member 90.

[0057] Furthermore, the coring and drilling device also includes a liquid supply component 40. Preferably, the liquid supply component 40 extends to form a liquid pipe 41, and the liquid pipe 41 is arranged to at least partially penetrate the delivery channel 201 of the output shaft 20 and the liquid inlet channel 3103 of the liquid inlet member 31 at the same time, and the liquid inlet channel 3103 is connected to a port of the liquid pipe 41, and when the liquid supply component 40 is immersed in coolant, the liquid supply component 40 guides the coolant to be sucked into the liquid pipe 41 to pass the coolant into the liquid inlet channel 3103.

[0058] It is understandable that when the drilling member 90 is driven to perform a drilling operation, the liquid supply component 40 introduces coolant into the liquid inlet channel 3103 of the liquid inlet component 31, so that the coolant passes through the liquid sprinkling component 30 into the interior of the drilling member 90, thereby cooling the drilling member 90.

[0059] Preferably, the liquid supply component 40 is implemented as a water valve assembly.

[0060] In addition, the coring drilling device further includes a sealing unit 50. Preferably, the sealing unit 50 includes a sealing element 51 and a fastener 52. The sealing element 51 is installed in the delivery channel 201 of the output shaft 20 and is located in the gap between the inner wall of the output shaft 20 and the outer wall of the liquid passage 41, and is passed through by the liquid passage 41. The fastener 52 is installed in a predetermined position adjacent to the delivery channel 201 and the sealing element 51, and is passed through by the liquid passage 41. The fastener 52 is configured to abut the sealing element 51, thereby preventing the sealing element 51 from moving axially along the output shaft 20.

[0061] It should be noted that when the coring drilling device drives the drilling member 90 upward to perform a drilling operation, part of the coolant flowing out of the liquid pipe 41 will flow back into the delivery channel 201 of the output shaft 20 under the action of gravity, and then flow into the interior of the device body 10, causing damage to the driving component 12 of the device body 10. Therefore, the sealing unit 50 is provided to prevent part of the coolant flowing out of the liquid pipe 41 from flowing back into the delivery channel 201 to protect the driving component 12.

[0062] Preferably, the sealing element 51 is implemented as a sealing ring. The fastener 52 is implemented as a clip spring.

[0063] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A core drilling device, characterized in that: The coring drilling device comprises: Device body; an output shaft rotatably supported on the device body, and having an interior of the output shaft having a conveying passage with an open front end; In which, the core drilling device also includes a liquid sprinkling component, which is connected to the front end of the output shaft, and the liquid sprinkling component has a liquid inlet channel connected to the conveying channel, and a plurality of liquid dispersion windows circumferentially distributed on the liquid inlet channel and connected thereto, and the coolant flowing out of the liquid inlet channel is diffused to the surroundings through the liquid dispersion windows.

2. The core drilling device according to claim 1, characterized in that: A drilling member is detachably connected to the end of the output shaft away from the device body. The drilling member has a cavity inside for accommodating the material to be processed. When the drilling member is connected to the output shaft, the liquid dispersion window is at least partially accommodated in the cavity of the drilling member to guide the coolant flowing through the liquid inlet channel and entering the cavity to flow toward the inner wall of the cavity.

3. The core drilling device according to claim 2, characterized in that: The liquid sprinkling component includes a liquid inlet and a stopper, the liquid inlet having a liquid inlet, a liquid outlet, and the liquid inlet channel arranged between the liquid inlet and the liquid outlet and connected with the liquid inlet and the liquid outlet, the liquid outlet being arranged to extend toward the axial direction of the drilling member, and the side wall of the liquid inlet is provided with a plurality of liquid dispersion windows connected with the liquid outlet and the cavity, the liquid dispersion windows being oriented toward the radial direction of the drilling member, the stopper being arranged in the cavity of the drilling member, the stopper having a guide portion for guiding the flow of coolant, the guide portion having an arc-shaped guide surface convex toward the liquid outlet, and the guide portion being maintained in the flow direction of the coolant flowing through the liquid inlet channel.

4. The core drilling device according to claim 3, characterized in that: The liquid inlet member includes a plurality of connecting ribs and a liquid inlet body, wherein each of the connecting ribs is arranged between the liquid inlet body and the block, and the connecting ribs are arranged to extend in a radial direction, and at least one liquid dispersion window is formed between two adjacent connecting ribs. The plurality of liquid dispersion windows are arranged at circumferential positions of the liquid inlet member with the axial direction of the liquid inlet member as the center line, and the liquid dispersion windows are at least partially retained in the cavity of the drilling member, and the liquid inlet body is arranged to form at least part of the liquid inlet channel.

5. The core drilling device according to claim 4, characterized in that: The liquid inlet body is at least partially inserted into the delivery channel of the output shaft and is fixedly connected to the inner wall forming the delivery channel. The block is located at the liquid outlet of the liquid inlet channel and forms the guide portion toward the liquid outlet.

6. The core drilling device according to claim 5, characterized in that: The direction of at least one of the liquid diffusion windows is set to form a predetermined angle with the axial direction of the liquid inlet component and tends to be toward the end of the drilling component away from the output shaft.

7. The core drilling device according to claim 6, characterized in that: The outer wall of the output shaft has a mounting structure for fixedly connecting with the drilling member, and the delivery channel is provided through both ends of the output shaft.

8. The coring drilling device according to claim 1 or 7, characterized in that: The device body is arranged to extend from the middle portion in a horizontal direction to form a handheld portion, and the device body is further provided with a driving component, and the output shaft is transmission-connected to the driving component.

9. The core drilling device according to claim 7, characterized in that: The coring drilling device also includes a liquid supply component, which extends to form a liquid pipeline. The liquid pipeline is arranged to at least partially penetrate the delivery channel of the output shaft and the liquid inlet channel of the liquid inlet member at the same time, and the liquid inlet channel is connected to the port of the liquid pipeline. When the liquid supply component is immersed in coolant, the liquid supply component guides the coolant to be sucked into the liquid pipeline to pass the coolant into the liquid inlet channel.

10. The core drilling device according to claim 9, characterized in that: The coring and drilling device also includes a sealing unit, which includes a sealing element and a fastener, wherein the sealing element is installed in the conveying channel of the output shaft and is located in the gap between the inner wall of the output shaft and the outer wall of the liquid pipeline, and is passed through by the liquid pipeline. The fastener is installed in a predetermined position adjacent to the conveying channel and the sealing element, and is passed through by the liquid pipeline, and the fastener is configured to abut the sealing element.

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