Reamer bit assembly

Abstract

The utility model provides a reamer bit assembly which comprises a first bit part, a second bit part and a third bit part which are sequentially connected along a preset axis, and the first bit part and the second bit part are provided with a first liquid through hole and a second liquid through hole respectively. The first drill bit component comprises a first drill bit and a first connecting rod located at the end, close to the second drill bit component, of the first drill bit, and the first connecting rod is arranged on the second drill bit component in a penetrating mode and fixedly connected with the second drill bit component so as to communicate the first liquid through hole with the second liquid through hole. The second drill bit component comprises a second drill bit and a second connecting rod located at the end, close to the third drill bit component, of the second drill bit, the second connecting rod penetrates through the third drill bit component and is fixedly connected with the third drill bit component, and the end, away from the second drill bit, of the second connecting rod is located on the side, away from the second drill bit, of the third drill bit component. The problem that in the prior art, a large-aperture hole can be machined only by manually replacing a drill bit for multiple times is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit technical field, specifically, relate to a reamer drill bit assembly. BACKGROUND

[0002] In the field of drilling construction, especially in the processing of large-diameter holes, the construction method in the prior art has some obvious limitations.

[0003] At present, the processing of large-diameter holes generally adopts the mode of reaming by multiple drill bits with diameters increasing in turn, which needs manual replacement of drill bits for multiple times.

[0004] The above operation method not only has great labor intensity, but also has low work efficiency, which seriously affects the construction progress and the work experience of workers. INVENTION CONTENTS

[0005] The main purpose of the utility model is to provide a reamer drill bit assembly to solve the problem that manual replacement of drill bits for multiple times is needed to process large-diameter holes in the prior art.

[0006] In order to achieve the above purpose, the utility model provides a reamer drill bit assembly, which comprises a first drill bit component, a second drill bit component and a third drill bit component, the first drill bit component, the second drill bit component and the third drill bit component are connected in turn along a predetermined axis, the first drill bit component is provided with a first liquid passage hole, and the second drill bit component is provided with a second liquid passage hole; the first drill bit component comprises a first drill bit and a first connecting rod arranged at one end of the first drill bit close to the second drill bit component, the first connecting rod is arranged on the second drill bit component and fixedly connected with the second drill bit component, so as to communicate the first liquid passage hole and the second liquid passage hole; the second drill bit component comprises a second drill bit and a second connecting rod arranged at one end of the second drill bit close to the third drill bit component, the second connecting rod is arranged in the third drill bit component and fixedly connected with the third drill bit component, and one end of the second connecting rod away from the second drill bit is located on the side of the third drill bit component away from the second drill bit, so as to be connected with a drill bit driving component.

[0007] Further, the first drill bit comprises a first drill bit body and a plurality of first alloy heads connected with each other, the plurality of first alloy heads are uniformly arranged at one end of the first drill bit body away from the second drill bit component around the predetermined axis, and one end of the first drill bit body close to the second drill bit component is connected with the first connecting rod.

[0008] Further, one end of the first liquid passage hole extends to one end of the first drill bit body away from the second drill bit component, and the other end of the first liquid passage hole extends to one end of the first connecting rod away from the first drill bit body.

[0009] Further, the second drill bit comprises a second drill bit body and a plurality of second alloy heads connected to the second drill bit body, the plurality of second alloy heads are arranged uniformly around a predetermined axis at an end of the second drill bit body away from the third drill bit component, and an end of the second drill bit body close to the third drill bit component is connected to the second connecting rod.

[0010] Further, a first end of the second liquid passage extends to an end of the second drill bit body away from the third drill bit component, and a second end of the second liquid passage extends to an end of the second connecting rod away from the second drill bit body.

[0011] Further, the third drill bit component comprises a support frame and a plurality of alloy steel composite sheets connected to the support frame, the support frame is provided with a plurality of slag discharge holes, and the plurality of alloy steel composite sheets are arranged uniformly around a predetermined axis at an end of the support frame close to the second drill bit component.

[0012] Further, the support frame comprises a circular flange and a plurality of rib plates connected to the circular flange, the plurality of rib plates are arranged uniformly around a predetermined axis at a side of the circular flange close to the second drill bit component to form a plurality of slag discharge holes; and each of the plurality of alloy steel composite sheets is arranged on a side of the plurality of rib plates away from the circular flange.

[0013] Further, a plurality of weight-reducing holes are arranged on the circular flange; and / or the height of each rib plate in a direction parallel to the predetermined axis gradually increases in a direction close to the predetermined axis.

[0014] Further, the outer diameter of the first connecting rod is 70mm to 75mm; and / or the outer diameter of the second connecting rod is 70mm to 75mm; and / or the maximum outer diameter of the first drill bit component is 80mm to 110mm; and / or the maximum outer diameter of the second drill bit component is 140mm to 200mm; and / or the maximum outer diameter of the third drill bit component is 300mm to 600mm.

[0015] Further, the outer diameter of the first connecting rod is 73mm; and / or the outer diameter of the second connecting rod is 73mm; and / or the maximum outer diameter of the first drill bit component is 96mm; and / or the maximum outer diameter of the second drill bit component is 153mm; and / or the maximum outer diameter of the third drill bit component is 500mm.

[0016] The utility model discloses a technical scheme, the utility model discloses reamer bit assembly includes: first drill bit part, second drill bit part and third drill bit part, first drill bit part, second drill bit part and third drill bit part are connected in order along predetermined axis, be provided with first liquid hole on first drill bit part, be provided with second liquid hole on second drill bit part, first drill bit part includes first drill bit and sets up first connecting rod on the one end of first drill bit close to second drill bit part, and first connecting rod is arranged on second drill bit part and is fixedly connected with second drill bit part, to communicate first liquid hole and second liquid hole, second drill bit part includes second drill bit and sets up second connecting rod on the one end of second drill bit close to third drill bit part, and second connecting rod is arranged in third drill bit part and is fixedly connected with third drill bit part, and the one end of second connecting rod away from second drill bit is located the side of third drill bit part away from second drill bit, to be used for connecting with drill bit drive part, in this way, the utility model provides a reamer bit assembly and is connected in order along predetermined axis first drill bit part, second drill bit part and third drill bit part are set up, and under the premise that need not replace drill bit, realizes the one -time processing to big aperture hole, solves the problem that the present technical field needs manual replacement of drill bit to be able to out processing big aperture hole, reduces the consumption of various drill bits, improves the processing efficiency of big aperture hole, reduces the time needed for manual replacement of drill bit, reduces the labor intensity of operating personnel, avoids the construction risk, and simple structure, strong adaptability, easy operation, have extensive practicality. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application and are incorporated herein by reference. The embodiments disclosed in the drawings are illustrative of the present application and are not meant to limit the present application as well as the explanation is used to explain the present application. In the drawings:

[0018] Figure 1 A front view of an embodiment of the reamer bit assembly according to the present application is shown;

[0019] Figure 2 A front view of an embodiment of the reamer bit assembly according to the present application is shown; Figure 1 A top view of the third drill bit part of the reamer bit assembly shown;

[0020] Figure 3 A front view of an embodiment of the reamer bit assembly according to the present application is shown; Figure 2 A front view of an embodiment of the reamer bit assembly according to the present application is shown;

[0021] In the above drawings, the following reference signs are used:

[0022] 1, first drill bit part; 10, first liquid hole; 11, first drill bit; 111, first drill bit body; 112, first alloy head; 12, first connecting rod;

[0023] 2. Second drill bit assembly; 20. Second fluid passage; 21. Second drill bit; 211. Second drill bit body; 212. Second alloy head; 22. Second connecting rod;

[0024] 3. Third drill bit component; 31. Support frame; 310. Slag discharge hole; 311. Circular flange; 312. Rib plate; 32. Alloy steel composite sheet. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figures 1 to 3 As shown, this utility model provides a reaming drill bit assembly, including: a first drill bit component 1, a second drill bit component 2, and a third drill bit component 3, which are sequentially connected along a predetermined axis. The first drill bit component 1 is provided with a first fluid passage hole 10, and the second drill bit component 2 is provided with a second fluid passage hole 20. The first drill bit component 1 includes a first drill bit 11 and a first connecting rod 12 disposed at one end of the first drill bit 11 near the second drill bit component 2, through which the first connecting rod 12 passes. The first fluid passage 10 and the second fluid passage 20 are connected to the second drill bit component 2. The second drill bit component 2 includes a second drill bit 21 and a second connecting rod 22 disposed at one end of the second drill bit 21 near the third drill bit component 3. The second connecting rod 22 passes through the third drill bit component 3 and is fixedly connected to the third drill bit component 3. The end of the second connecting rod 22 away from the second drill bit 21 is located on the side of the third drill bit component 3 away from the second drill bit 21 for connection with the drill bit drive component.

[0027] Thus, this utility model provides a hole-reaming drill bit assembly that, by setting a first drill bit component 1, a second drill bit component 2, and a third drill bit component 3 connected sequentially along a predetermined axis, achieves one-time processing of large-diameter holes without the need to replace drill bits. This solves the problem in the prior art that requires multiple manual drill bit replacements to process large-diameter holes, reduces the consumption of various drill bits, improves the processing efficiency of large-diameter holes, reduces the time required for manual drill bit replacement, reduces the labor intensity of operators, avoids construction risks, and has a simple structure, strong adaptability, and is easy to operate, thus having wide applicability.

[0028] Specifically, the drilling diameter of the first drill bit component 1, the drilling diameter of the second drill bit component 2, and the drilling diameter of the third drill bit component 3 increase sequentially, that is, the maximum outer diameter of the first drill bit component 1, the maximum outer diameter of the second drill bit component 2, and the maximum outer diameter of the third drill bit component 3 increase sequentially.

[0029] As shown in Figure 1 The first drill head 11 comprises a first drill head body 111 and a plurality of first alloy heads 112 connected with each other, the plurality of first alloy heads 112 are uniformly arranged around a predetermined axis at an end of the first drill head body 111 away from the second drill head component 2, and an end of the first drill head body 111 close to the second drill head component 2 is connected with the first connecting rod 12.

[0030] Optionally, the first drill head body 111 and each first alloy head 112 are connected by welding or integrally casted.

[0031] As shown in Figure 1 The first end of the first liquid passage 10 extends to the end of the first drill head body 111 away from the second drill head component 2, and the second end of the first liquid passage 10 extends to an end of the first connecting rod 12 away from the first drill head body 111.

[0032] Specifically, the first end of the first liquid passage 10 comprises a plurality of second water outlets, and the plurality of second water outlets are arranged on an end face of the end of the first drill head body 111 away from the second drill head component 2.

[0033] Optionally, the first connecting rod 12 is threadedly connected and / or welded connected with the first drill head body 111; and the first connecting rod 12 is threadedly connected and / or welded connected with the second drill head component 2.

[0034] As shown in Figure 1 The second drill head 21 comprises a second drill head body 211 and a plurality of second alloy heads 212 connected with each other, the plurality of second alloy heads 212 are uniformly arranged around a predetermined axis at an end of the second drill head body 211 away from the third drill head component 3, and an end of the second drill head body 211 close to the third drill head component 3 is connected with the second connecting rod 22.

[0035] Optionally, the second drill head body 211 and each second alloy head 212 are connected by welding or integrally casted.

[0036] As shown in Figure 1 The first end of the second liquid passage 20 extends to the end of the second drill head body 211 away from the third drill head component 3, and the second end of the second liquid passage 20 extends to an end of the second connecting rod 22 away from the second drill head body 211, so as to communicate with an external liquid supply device.

[0037] Specifically, the first end of the second liquid passage 20 comprises a plurality of second water outlets, and the plurality of second water outlets are arranged on an end face of the end of the second drill head body 211 away from the third drill head component 3.

[0038] Optionally, the second connecting rod 22 is threadedly connected and / or welded to the second drill bit body 211; and the second connecting rod 22 is threadedly connected and / or welded to the third drill bit component 3.

[0039] As shown in Figures 1 to 3 The third drill bit component 3 comprises a support frame 31 and a plurality of alloy steel composite sheets 32 connected to the support frame 31, the support frame 31 is provided with a plurality of slag discharge holes 310, and the plurality of alloy steel composite sheets 32 are uniformly arranged around a predetermined axis at an end of the support frame 31 close to the second drill bit component 2.

[0040] As shown in Figures 1 to 3 The support frame 31 comprises a circular flange 311 and a plurality of rib plates 312 connected to each other, the plurality of rib plates 312 are uniformly arranged around a predetermined axis at a side of the circular flange 311 close to the second drill bit component 2 to form a plurality of slag discharge holes 310; and the plurality of alloy steel composite sheets 32 are arranged one by one at a side of the plurality of rib plates 312 away from the circular flange 311.

[0041] Preferably, each rib plate 312 is a steel plate.

[0042] As shown in Figures 1 to 3 The circular flange 311 is provided with a plurality of weight-reducing holes at intervals.

[0043] As shown in Figures 1 to 3 The height of each rib plate 312 in a direction parallel to the predetermined axis gradually increases in a direction close to the predetermined axis.

[0044] Preferably, each rib plate 312 is provided with a third liquid passage hole, and the third liquid passage hole is in communication with a part of the second liquid passage hole 20 located on the second connecting rod 22.

[0045] Preferably, the outer diameter of the first connecting rod 12 is 70mm to 75mm; and / or the outer diameter of the second connecting rod 22 is 70mm to 75mm; and / or the maximum outer diameter of the first drill bit component 1 is 80mm to 110mm; and / or the maximum outer diameter of the second drill bit component 2 is 140mm to 200mm; and / or the maximum outer diameter of the third drill bit component 3 is 300mm to 600mm.

[0046] Further preferably, the outer diameter of the first connecting rod 12 is 73mm; and / or the outer diameter of the second connecting rod 22 is 73mm; and / or the maximum outer diameter of the first drill bit component 1 is 96mm; and / or the maximum outer diameter of the second drill bit component 2 is 153mm; and / or the maximum outer diameter of the third drill bit component 3 is 500mm.

[0047] Specifically, the maximum outer diameter of the first drill bit component 1 is the drilling diameter of the first drill bit component 1, the maximum outer diameter of the second drill bit component 2 is the drilling diameter of the second drill bit component 2, and the maximum outer diameter of the third drill bit component 3 is the drilling diameter of the third drill bit component 3.

[0048] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0049] The reaming drill bit assembly of the utility model comprises a first drill bit component 1, a second drill bit component 2 and a third drill bit component 3, the first drill bit component 1, the second drill bit component 2 and the third drill bit component 3 are sequentially connected along a predetermined axis, the first drill bit component 1 is provided with a first liquid passage 10, and the second drill bit component 2 is provided with a second liquid passage 20; the first drill bit component 1 comprises a first drill bit 11 and a first connecting rod 12 arranged at one end of the first drill bit 11 close to the second drill bit component 2, the first connecting rod 12 is arranged on the second drill bit component 2 and is fixedly connected with the second drill bit component 2, so as to communicate the first liquid passage 10 and the second liquid passage 20; the second drill bit component 2 comprises a second drill bit 21 and a second connecting rod 22 arranged at one end of the second drill bit 21 close to the third drill bit component 3, the second connecting rod 22 is arranged on the third drill bit component 3 and is fixedly connected with the third drill bit component 3, and one end of the second connecting rod 22 away from the second drill bit 21 is located on the side of the third drill bit component 3 away from the second drill bit 21, so as to be connected with a drill bit driving component. In this way, the utility model provides a reaming drill bit assembly, which sequentially connects the first drill bit component 1, the second drill bit component 2 and the third drill bit component 3 along a predetermined axis, realizes one-time machining of a large-diameter hole without replacing a drill bit, solves the problem that in the prior art, a large-diameter hole can be machined only by manually replacing a drill bit multiple times, reduces the consumption of various drill bits, improves the machining efficiency of the large-diameter hole, reduces the time required for manually replacing a drill bit, reduces the labor intensity of an operator, avoids construction risks, has a simple structure, strong adaptability, is easy to operate and has wide practicability.

[0050] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0051] The foregoing description, for purposes of clarity, describes the present application in terms of its components, processes and operations. Such descriptions and representations are the means used by those skilled in the art of describing the structural and functional necessities of and changes to the present application, but are not meant to limit the present application to a particular embodiment. Also, the various embodiments of the present application presented are not necessarily the only ones in which the present application can be practiced. The embodiments presented are intended to convey the scope of the present application, its energy saving and cost saving advantages, and its intended advantages to those skilled in the art. Numerous adaptations and modifications can be practiced without departing from the scope of the present application. Accordingly, the scope of the present application is to be indicated by the appended claims, rather than by the foregoing description, and all changes that come within the meaning and range of equivalents are intended to be embraced therein.

[0052] In the description of the present application, it is to be understood that the specific location or position relationships indicated by directional terms, such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "top", "bottom", and the like, are based on the orientation or position relationships 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 devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. The orientation terms "inner" and "outer" refer to the inner and outer of the profile of the components themselves.

[0053] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", and the like can be used herein to describe the spatial position relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0054] In addition, it should be noted that the use of the terms "first", "second", and the like to describe various components does not limit the corresponding components in any way, and the above terms do not have special meanings unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0055] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An underreamer assembly, comprising: The utility model relates to a drill head, including: First drill part (1), second drill part (2) and third drill part (3), first drill part (1), second drill part (2) and third drill part (3) are connected in order along predetermined axis, be provided with first liquid hole (10) on first drill part (1), be provided with second liquid hole (20) on second drill part (2); First drill part (1) includes first drill (11) and sets up first connecting rod (12) on the one end of first drill (11) near second drill part (2), first connecting rod (12) is arranged on second drill part (2) and is fixedly connected with second drill part (2), to communicate first liquid hole (10) with second liquid hole (20); Second drill part (2) includes second drill (21) and sets up second connecting rod (22) on the one end of second drill (21) near third drill part (3), second connecting rod (22) is arranged in third drill part (3) and is fixedly connected with third drill part (3), the one end of second connecting rod (22) away from second drill (21) is located in the side of third drill part (3) away from second drill (21), to be connected with drill driving part; Third drill part (3) includes support frame (31) and multiple alloy steel composite sheets (32) connected with support frame (31), multiple alloy steel composite sheets (32) are arranged in the one end of support frame (31) near second drill part (2) around predetermined axis 360 degrees evenly.

2. The reamer bit assembly of claim 1, wherein, First drill (11) includes first drill body (111) and multiple first alloy heads (112) connected, multiple first alloy heads (112) are arranged in the one end of first drill body (111) away from second drill part (2) around predetermined axis 360 degrees evenly, and the one end of first drill body (111) near second drill part (2) is connected with first connecting rod (12).

3. The reamer bit assembly of claim 2, wherein, The first end of first liquid hole (10) extends to the one end of first drill body (111) away from second drill part (2), and the second end of first liquid hole (10) extends to the one end of first connecting rod (12) away from first drill body (111).

4. The reamer bit assembly of claim 1, wherein, Second drill (21) includes second drill body (211) and multiple second alloy heads (212) connected, multiple second alloy heads (212) are arranged in the one end of second drill body (211) away from third drill part (3) around predetermined axis 360 degrees evenly, and the one end of second drill body (211) near third drill part (3) is connected with second connecting rod (22).

5. The reamer bit assembly of claim 4, wherein, The first end of the second liquid passage hole (20) extends to one end of the second drill bit body (211) away from the third drill bit component (3), and the second end of the second liquid passage hole (20) extends to one end of the second connecting rod (22) away from the second drill bit body (211).

6. The reamer bit assembly of claim 1, wherein, The support frame (31) comprises a circular flange (311) and a plurality of rib plates (312) connected to each other, the plurality of rib plates (312) are uniformly arranged on one side of the circular flange (311) close to the second drill bit component (2) around the predetermined axis at 360 degrees to form the plurality of slag discharge holes (310); wherein the plurality of alloy steel composite sheets (32) are arranged one by one on the side of the plurality of rib plates (312) away from the circular flange (311).

7. The reamer bit assembly of claim 6, wherein, the circular flange (311) is provided with a plurality of weight-reducing holes at intervals; and / or the height of each rib plate (312) in the direction parallel to the predetermined axis gradually increases in the direction close to the predetermined axis.

8. The reamer bit assembly of any one of claims 1 to 5, wherein, the outer diameter of the first connecting rod (12) is 70mm to 75mm; and / or the outer diameter of the second connecting rod (22) is 70mm to 75mm; and / or the maximum outer diameter of the first drill bit component (1) is 80mm to 110mm; and / or the maximum outer diameter of the second drill bit component (2) is 140mm to 200mm; and / or the maximum outer diameter of the third drill bit component (3) is 300mm to 600mm.

9. The reamer bit assembly of any one of claims 1 to 5, wherein, the outer diameter of the first connecting rod (12) is 73mm; and / or the outer diameter of the second connecting rod (22) is 73mm; and / or the maximum outer diameter of the first drill bit component (1) is 96mm; and / or the maximum outer diameter of the second drill bit component (2) is 153mm; and / or the maximum outer diameter of the third drill bit component (3) is 500mm.

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