Drilling structure and drilling equipment

Abstract

The invention provides a drilling structure. The drilling structure comprises a drill rod, an eccentric drill bit and a sleeve. The eccentric drill bit is connected with the drill rod, the eccentric drill bit comprises a drill bit body and an eccentric part arranged on one side of the circumferential surface of the drill bit body, and the maximum diameter of the drill bit body is smaller than the inner diameter of the sleeve; the sleeve is arranged outside the drill bit body in a sleeving mode, and the head of the drill bit body and at least part of the eccentric part are located outside the sleeve. A receding groove is formed in one side of the sleeve, the receding groove penetrates through the sleeve wall of the sleeve in the axial direction, and the width of the eccentric part is smaller than that of the receding groove. Meanwhile, the invention further provides drilling equipment. Compared with the prior art, the drilling structure and the drilling equipment can improve the construction efficiency and reduce the construction cost.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and in particular to a drilling structure and a drilling equipment. Background Art

[0002] With the development of industry and the continuous advancement of various construction projects, drilling equipment is widely used in hole opening operations in various engineering construction projects.

[0003] At present, the steps of underground anchor construction are to first drill a hole with a drilling device. When the drilling depth reaches the required depth, a sleeve is placed in the hole and mortar is injected to ensure that the sleeve is vertical and maintains stability. The anchor is then anchored after the mortar solidifies.

[0004] However, in the prior art, when performing anchor construction, it is necessary to first drill a hole using a drilling device, then move the drill bit out of the construction hole, and then place a sleeve in the hole. The overall construction requires many steps and is inefficient, increasing labor costs, time costs, machine loss costs, and other costs. Summary of the invention

[0005] In view of the technical problem that in the prior art, when constructing anchor rods, it is necessary to drill holes first and then place sleeves, which has low construction efficiency and increases costs, the present invention provides a drilling structure that can simultaneously place sleeves into holes during the drilling process, thereby reducing the steps required for construction, improving construction efficiency and reducing construction costs.

[0006] A drilling structure, comprising a drill rod, an eccentric drill bit and a sleeve; The eccentric drill bit is connected to the drill rod, and the eccentric drill bit includes a drill bit body and an eccentric portion arranged on one side of the circumferential surface of the drill bit body, and the maximum diameter of the drill bit body is smaller than the inner diameter of the sleeve; The sleeve is sleeved on the outside of the drill body, and the head of the drill body and the eccentric part are at least partially located outside the sleeve; A relief groove is provided on one side of the sleeve, and the relief groove penetrates the cylinder wall of the sleeve along the axial direction, and the width of the eccentric portion is smaller than the width of the relief groove.

[0007] Preferably, it also includes a connecting sleeve; The sleeve is located between the connecting sleeve and the eccentric portion, and one end of the sleeve abuts against the end surface of the connecting sleeve.

[0008] Preferably, the eccentric drill bit is an integrated eccentric drill bit.

[0009] Preferably, along the axial direction of the drill bit body, the drill bit body includes a head portion and a stem portion which are arranged in sequence, the stem portion is at least partially located in the sleeve, and the head portion is located outside the sleeve.

[0010] Preferably, the gap between the outer peripheral surface of the rod and the inner surface of the sleeve is 2-3 mm.

[0011] Preferably, the diameter of the construction hole formed by the eccentric portion is larger than the outer diameter of the sleeve.

[0012] Preferably, the diameter of the construction hole opened by the eccentric part is 1-3 mm larger than the outer diameter of the sleeve.

[0013] Preferably, a central channel is provided inside the rod; A powder discharge groove is provided on the outer periphery of the head, and a first connecting hole communicating with the central channel is provided inside the head, and the first connecting hole extends to the end surface of the head.

[0014] Preferably, a second connecting hole is further provided inside the head, and the second connecting hole connects the central channel with the powder discharge groove.

[0015] A drilling device is provided, which is applied with the drilling structure as described in any one of the above.

[0016] Compared with the prior art, the drilling structure provided by the present invention comprises a drill rod, an eccentric drill bit and a sleeve; the eccentric drill bit is connected to the drill rod, and comprises a drill bit body and an eccentric portion arranged on one side of the circumferential surface of the drill bit body, and the maximum diameter of the drill bit body is smaller than the inner diameter of the sleeve; the sleeve is sleeved on the outside of the drill bit body, and the head of the drill bit body and the eccentric portion are at least partially located outside the sleeve; an avoidance groove is opened on one side of the sleeve, and the avoidance groove penetrates the cylinder wall of the sleeve along the axial direction, and the width of the eccentric portion is smaller than the width of the avoidance groove. The sleeve is provided in the drilling structure, and the avoidance groove is provided on the sleeve, and the eccentric part is provided in the eccentric drill bit. Before drilling, the eccentric part in the eccentric drill bit can be aligned with the avoidance groove, so that the eccentric drill bit can pass through the sleeve, and then drilling can be performed. During the drilling process, the sleeve can be synchronously driven into the hole, thereby saving the steps required for construction, improving construction efficiency, and reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a drilling structure provided in an embodiment; Figure 2 for Figure 1 A schematic diagram of the structure of the drilling structure shown in another angle; Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the sleeve shown; Figure 4 for Figure 3 A schematic diagram of the planar structure of the sleeve shown; Figure 5 A schematic cross-sectional structure diagram of an eccentric drill bit provided in an embodiment. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] It should be noted that when a component is referred to as being "fixed on", "installed on" or "set on" another component, it can be directly on the other component or indirectly set on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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, and therefore should not be understood as a limitation on the present application.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0023] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0024] The present invention provides a drilling structure, which comprises a drill rod, an eccentric drill bit and a sleeve; the eccentric drill bit is connected to the drill rod, and comprises a drill bit body and an eccentric part arranged on one side of the circumferential surface of the drill bit body, and the maximum diameter of the drill bit body is smaller than the inner diameter of the sleeve; the sleeve is sleeved on the outside of the drill bit body, and the head of the drill bit body and the eccentric part are at least partially located outside the sleeve; an avoidance groove is opened on one side of the sleeve, and the avoidance groove penetrates the cylinder wall of the sleeve along the axial direction, and the width of the eccentric part is smaller than the width of the avoidance groove. The sleeve is provided in the drilling structure, and the avoidance groove is provided on the sleeve, and the eccentric part is provided in the eccentric drill bit. Before drilling, the eccentric part in the eccentric drill bit can be aligned with the avoidance groove, so that the eccentric drill bit can pass through the sleeve, and then drilling can be performed. During the drilling process, the sleeve can be synchronously driven into the hole, thereby saving the steps required for construction, improving construction efficiency, and reducing construction costs.

[0025] Please refer to Figures 1 to 5 In one embodiment, a drilling structure 100 is provided, which is mainly used to solve the problem that in the prior art, during anchor construction, drilling and placing sleeves need to be carried out in two steps, resulting in low construction efficiency and high construction cost.

[0026] The drilling structure 100 includes a drill rod 10, an eccentric drill bit 20 and a sleeve 30. The eccentric drill bit 20 is connected to the drill rod 10. The eccentric drill bit 20 includes a drill bit body 21 and an eccentric portion 22 arranged on one side of the circumferential surface of the drill bit body 21. The maximum diameter of the drill bit body 21 is smaller than the inner diameter of the sleeve 30. The sleeve 30 is sleeved on the outside of the drill bit body 21, and the head of the drill bit body 21 and the eccentric portion 22 are at least partially located outside the sleeve 30. That is, the head of the drill bit body 21 is at least partially located outside the sleeve 30, and the eccentric portion 22 is at least partially located outside the sleeve 30, so that the sleeve 30 will not affect the head of the drill bit body 21 and the eccentric portion 22 to perform normal drilling operations.

[0027] An escape groove 31 is provided on one side of the sleeve 30, and the escape groove 31 penetrates the wall of the sleeve 30 in the axial direction. The width of the eccentric portion 22 is smaller than the width of the escape groove 31. It can be understood that, since the maximum diameter of the drill body 21 is smaller than the inner diameter of the sleeve 30, and the width of the eccentric portion 22 is smaller than the width of the escape groove 31, when the eccentric portion 22 is aligned with the escape groove 31, the eccentric drill bit 20 can smoothly pass through the sleeve 30 in the axial direction, the sleeve 30 will not block the eccentric drill bit 20, and the eccentric drill bit 20 can smoothly penetrate into or out of the sleeve 30.

[0028] When drilling, the eccentric part 22 on the eccentric drill bit 20 can be aligned with the avoidance groove 31 on the sleeve 30, and then the eccentric drill bit 20 can be inserted into the sleeve 30 and out from the other end of the sleeve 30. After the eccentric drill bit 20 and the drill rod 10 are placed, the sleeve 30 is rotated to allow the eccentric part 22 to deviate from the avoidance groove 31, and then the drilling operation is performed, so that during the drilling process, the sleeve 30 can also be placed in the hole together. When the drilling is completed and the sleeve 30 enters the construction hole to the required depth, the eccentric drill bit 20 is rotated again to align the eccentric part 22 with the avoidance groove 31, and then the drill rod 10 and the eccentric drill bit 20 are taken out, and the synchronous construction of drilling and sleeve placement can be completed.

[0029] It is understandable that in the prior art, when constructing underground anchor bolts, it is necessary to first drill a hole, then take out the drill bit and other components from the construction hole, and then put the sleeve in. Drilling and placing the sleeve are two steps, which has low construction efficiency and increases labor costs, time costs, equipment loss and other costs overall.

[0030] The drilling structure 100 provided in this embodiment has the avoidance groove 31 on the sleeve 30, and the eccentric part 22 on the eccentric drill bit 20. The eccentric principle is adopted to ensure that the eccentric drill bit 20 can be placed in and passed through the sleeve 30 before drilling construction, and after the drilling construction is completed, the eccentric drill bit 20 can be smoothly retrieved from the construction hole. Before drilling, the eccentric drill bit 20 can be passed through the sleeve 30, and then the drill bit body 21 and the eccentric part 22 are used for drilling. During the drilling process, the sleeve 30 can be sent into the hole. The drilling structure 100 can simplify the construction steps, and can combine the drilling and sleeve placement steps into one, thereby improving the construction efficiency, reducing the labor cost, time cost, and equipment loss and other costs, and can also improve the construction quality. In addition, during the drilling process, the sleeve 30 is simultaneously sent into the construction hole, and the sleeve 30 can also play a supporting role to prevent the construction hole from collapsing.

[0031] Preferably, in one embodiment, the eccentric drill bit 20 is an integrated eccentric drill bit. The integrated eccentric drill bit refers to: the eccentric portion 22 and the drill body 21 are an integrated fixed structure, and the two are fixed to each other as a whole, rather than a combined or movable structure. It can be understood that the drill bit with an eccentric mechanism in the prior art usually adopts a combined or movable structure, and the eccentric mechanism can usually rotate relative to the drill body to achieve the folding and unfolding of the eccentric mechanism. However, the use of a combined or movable structure in the prior art makes the overall structure of the drill bit more complicated, the drill bit is difficult to process, and there are many connection points, so the drill bit is prone to damage. In this embodiment, the eccentric portion 22 and the drill body 21 adopt an integrated fixed structure, which makes the overall structure of the drill bit simpler, the overall structure is simple to process, can ensure good matching, and is not prone to damage, and has a longer service life.

[0032] Preferably, in one embodiment, the drilling structure 100 further includes a connecting sleeve 40, the sleeve 30 is located between the connecting sleeve 40 and the eccentric portion 22, and one end of the sleeve 30 abuts against the end surface of the connecting sleeve 40. In other words, the upper end surface of the sleeve 30 is limited by the connecting sleeve 40. The connecting sleeve 40 is connected to the drilling equipment, and when the drilling equipment drives the eccentric drill bit 20 to perform drilling operations, the drilling equipment will synchronously drive the connecting sleeve 40 forward, so that during the drilling process, the sleeve 30 can be automatically pushed into the construction hole by the drilling equipment, further reducing the construction difficulty and improving the construction efficiency. The connecting sleeve 40 and the back of the eccentric portion 22 can also play a straightening role.

[0033] Preferably, in one embodiment, along the axial direction of the drill body 21, the drill body 21 includes a head 211 and a rod 212 which are sequentially arranged, the rod 212 is at least partially located in the sleeve 30, and the head 211 is located outside the sleeve 30. The head 211 is mainly used for drilling operations, and the eccentric portion 22 is used to cooperate with hole expansion to expand the diameter of the construction hole.

[0034] Specifically, in one embodiment, alloy teeth are respectively provided on the head portion 211 and the eccentric portion 22, so as to further improve the efficiency of hole opening and hole expansion and better avoid component wear.

[0035] Preferably, in one embodiment, the gap between the outer peripheral surface of the rod portion 212 and the inner surface of the sleeve 30 is 2-3 mm, so as to better avoid the contact between the rod portion 212 and the inner surface of the sleeve 30 and avoid wear between the two.

[0036] Preferably, in one embodiment, the diameter of the construction hole formed by the eccentric portion 22 is larger than the outer diameter of the sleeve 30. That is, in the radial direction, the outermost surface of the portion of the eccentric portion 22 for expanding the hole is located outside the outer surface of the sleeve 30, so that the maximum hole diameter of the eccentric portion 22 is larger than the outer diameter of the sleeve 30, which facilitates the insertion of the sleeve 30 into the construction hole.

[0037] Specifically, in one embodiment, the diameter of the construction hole formed by the eccentric portion 22 is 1-3 mm larger than the outer diameter of the sleeve 30 .

[0038] Preferably, in one embodiment, a central channel 2121 is provided inside the rod 212, a powder discharge groove 2111 is provided on the periphery of the head 211, and a first connecting hole 2112 communicating with the central channel 2121 is provided inside the head 211, and the first connecting hole 2112 extends to the end surface 2113 of the head 211. The central channel 2121 can be connected to a corresponding airway in the drilling equipment, so that when slag is discharged, the airflow enters from the central channel 2121 and is discharged from the first connecting hole 2112, and then the airflow flows to the powder discharge groove 2111, and then the fallen gravel and other materials are discharged from the construction hole through the airflow.

[0039] More preferably, in one embodiment, the head 211 is provided with a second connection hole 2114 inside, and the second connection hole 2114 connects the central channel 2121 with the powder discharge groove 2111. When slag is discharged, the airflow enters from the central channel 2121, and then separates from the first connection hole 2112 and the second connection hole 2114, so that the airflow flows out from the end surface 2113 of the head 211 and the powder discharge groove 2111 respectively, and then the fallen gravel and other materials are discharged from the construction hole through the guidance of the airflow, further improving the effect and efficiency of slag discharge.

[0040] At the same time, in one embodiment, a drilling device is also provided, which is applied with the drilling structure 100. Before drilling, the eccentric part 22 of the eccentric drill bit 20 is aligned with the avoidance groove 31 of the sleeve 30, and then the eccentric drill bit 20 is inserted into the sleeve 30. After the eccentric drill bit 20 and the drill rod 10 are inserted, the sleeve 30 is rotated to make the avoidance groove 31 deviate from the eccentric part 22. When drilling, the head 211 and the eccentric part 22 play a role in opening the hole, and the end surface of the connecting sleeve 40 plays a role in pushing the sleeve 30. When the depth of the sleeve 30 entering the construction hole meets the requirements, the eccentric drill bit 20 is rotated so that the eccentric part 22 is aligned with the avoidance groove 31, and then the drill rod 10 and the eccentric drill bit 20 are taken out.

[0041] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A drilling structure, characterized in that: Including drill rod, eccentric drill bit and sleeve; The eccentric drill bit is connected to the drill rod, and the eccentric drill bit includes a drill bit body and an eccentric portion arranged on one side of the circumferential surface of the drill bit body, and the maximum diameter of the drill bit body is smaller than the inner diameter of the sleeve; The sleeve is sleeved on the outside of the drill body, and the head of the drill body and the eccentric part are at least partially located outside the sleeve; A relief groove is provided on one side of the sleeve, and the relief groove penetrates the cylinder wall of the sleeve along the axial direction, and the width of the eccentric portion is smaller than the width of the relief groove.

2. The drilling structure according to claim 1, characterized in that: Also includes a connecting sleeve; The sleeve is located between the connecting sleeve and the eccentric portion, and one end of the sleeve abuts against the end surface of the connecting sleeve.

3. The drilling structure according to claim 1, characterized in that: The eccentric drill bit is an integrated eccentric drill bit.

4. The drilling structure according to claim 1, characterized in that: Along the axial direction of the drill bit body, the drill bit body includes a head portion and a stem portion which are arranged in sequence, the stem portion is at least partially located in the sleeve, and the head portion is located outside the sleeve.

5. The drilling structure according to claim 4, characterized in that: The gap between the outer peripheral surface of the rod and the inner surface of the sleeve is 2-3 mm.

6. The drilling structure according to claim 4, characterized in that: The diameter of the construction hole formed by the eccentric portion is larger than the outer diameter of the sleeve.

7. The drilling structure according to claim 6, characterized in that: The diameter of the construction hole formed by the eccentric part is 1-3 mm larger than the outer diameter of the sleeve.

8. The drilling structure according to claim 4, characterized in that: A central channel is provided inside the rod; A powder discharge groove is provided on the outer periphery of the head, and a first connecting hole communicating with the central channel is provided inside the head, and the first connecting hole extends to the end surface of the head.

9. The drilling structure according to claim 8, characterized in that: A second connecting hole is also provided inside the head, and the second connecting hole connects the central channel with the powder discharge groove.

10. A drilling device, characterized in that: A drilling structure as claimed in any one of claims 1 to 9 is used.

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