Reaming bit and reaming equipment

Abstract

The utility model provides a reamer bit. The reamer bit comprises a linear bit guider and a bit body, a central channel is formed in the linear drill bit guider; along the axial direction of the linear drill bit guider, the linear drill bit guider comprises a head part and a rod part which are arranged in sequence; a deslagging inclined surface is arranged on the peripheral wall of the head part and extends from the end surface of the head part to the back surface of the head part; the deslagging inclined surface inclines outwards in the direction from the end surface of the head part to the back surface of the head part; the two deslagging inclined planes are positioned on two opposite sides of the peripheral wall of the head part; a first communicating hole communicating with the central channel is formed in the head, and an outlet of the first communicating hole is located in the end face of the head; the drill bit body is arranged on the rod part. Meanwhile, the utility model further provides reaming equipment. Compared with the prior art, the reamer bit and the reaming equipment are simple in structure, easy and convenient to maintain and longer in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of hole enlarging equipment, in particular to a hole enlarging drill bit and hole enlarging equipment. Background Art

[0002] With the development of industry and the continuous advancement of various infrastructure projects, drilling equipment and drill bits are widely used for drilling holes in projects such as mines, hydropower stations, ports, roads, and tunnels. After drilling is completed, reaming equipment is often used to expand the construction hole. The reaming drill bit at the front of the reaming equipment expands the construction hole to meet subsequent construction needs.

[0003] However, the structure of the reaming drill bit in the prior art is relatively complex and has many parts. In addition, during the reaming operation, the front end of the reaming drill bit is prone to abnormal wear, which affects the service life of the reaming drill bit. Utility Model Content

[0004] In view of the technical problems that the prior art reaming drill bits have complex structures, many parts, and are prone to abnormal wear on the front end of the drill bit, thus shortening the service life, the utility model provides a reaming drill bit with a simple structure, fewer parts, and better avoids abnormal wear on the front end of the drill bit, thereby extending the service life of the drill bit.

[0005] A reaming drill bit, comprising a slotted drill guide and a drill body;

[0006] A central channel is provided inside the slotted drill guide;

[0007] Along the axial direction of the slotted drill guide, the slotted drill guide includes a head and a rod that are sequentially arranged;

[0008] The outer peripheral wall of the head is provided with a slag discharge slope, which extends from the end face of the head to the back face of the head; and the slag discharge slope is inclined outward from the end face of the head toward the back face of the head; two slag discharge slopes are provided, and the two slag discharge slopes are located on opposite sides of the outer peripheral wall of the head;

[0009] A first communicating hole communicating with the central channel is formed inside the head, and an outlet of the first communicating hole is located at an end surface of the head;

[0010] The drill body is arranged on the rod portion.

[0011] Preferably, a second communicating hole communicating with the central channel is further provided inside the head, and an outlet of the second communicating hole is located on the slag discharge slope.

[0012] Preferably, one of the first communicating hole and one of the second communicating hole are provided, the outlet of the first communicating hole is located on the end surface of the head close to one of the slag discharge slopes, and the outlet of the second communicating hole is located on the other of the slag discharge slopes.

[0013] Preferably, a threaded hole is formed at one end of the rod away from the head.

[0014] Preferably, the end surface edge of the head is provided with a first bevel;

[0015] The end surface of the head and the first inclined surface are respectively inlaid with first alloy teeth.

[0016] Preferably, a third communicating hole communicating with the central channel is opened inside the rod portion, an outlet of the third communicating hole is located on the outer peripheral wall of the rod portion, and the outlet of the third communicating hole is located on the front side of the drill body;

[0017] The outer peripheral wall of the drill body is provided with a powder discharge groove.

[0018] Preferably, a transverse groove is provided on the end surface of the drill body, and the transverse groove is connected to the powder discharge groove.

[0019] Preferably, the end face edge of the drill body is provided with a second bevel;

[0020] Second alloy teeth are respectively provided on the end surface of the drill body and the second inclined surface.

[0021] Preferably, along the axial direction of the slotted drill guide, the rod portion includes a front section, a middle section and a tail section arranged in sequence;

[0022] The front section is connected to the head;

[0023] The drill bit body is arranged in the middle section;

[0024] A tapered hole is provided in the drill body, and a tapered surface matching the tapered hole is provided on the outer peripheral wall of the middle section.

[0025] A hole-reaming device is provided, which is equipped with a hole-reaming drill bit as described in any one of the above.

[0026] Compared with the prior art, the reaming drill bit provided by the present invention includes a slotted drill guide and a drill body; a central channel is provided inside the slotted drill guide; the slotted drill guide includes a head and a rod arranged in sequence along the axial direction of the slotted drill guide; a slag removal slope is provided on the outer peripheral wall of the head, the slag removal slope extends from the end face of the head to the back face of the head; and the slag removal slope is inclined outward from the end face of the head to the back face of the head; two slag removal slopes are provided, and the two slag removal slopes are located on opposite sides of the outer peripheral wall of the head; a first connecting hole connected to the central channel is provided inside the head, and the outlet of the first connecting hole is located on the end face of the head; the drill body is provided on the rod. The reaming drill bit has a simple structure, few parts, low overall processing difficulty, and is easy to use, maintain, and inspect on site. In addition, the reaming drill bit is provided with the slag discharge slope and the first connecting hole at the head, so that airflow can be introduced into the head to cooperate with the slag discharge slope to discharge slag, which is very beneficial for removing collapsed materials, landfill materials and fallen blocks in the original construction hole. Therefore, during the reaming operation, abnormal wear of the head can be better avoided, thereby increasing the wear resistance of the reaming drill bit and improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a reaming drill bit provided in one embodiment;

[0029] Figure 2 for Figure 1 A schematic diagram of the planar structure of the reaming drill bit shown;

[0030] Figure 3 For the Figure 2 Schematic diagram of the cross-sectional structure along line AA shown;

[0031] Figure 4 for Figure 1 A schematic diagram of the planar structure of the reaming drill bit shown;

[0032] Figure 5 For the Figure 4 Schematic diagram of the cross-sectional structure of line BB shown. DETAILED DESCRIPTION

[0033] In order to help those skilled in the art 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 embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0034] It should be noted that when a component is referred to as being “fixed on”, “mounted 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.

[0035] 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 accompanying drawings, and are only for the convenience of describing this 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 cannot be understood as a limitation on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0037] 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 efficacy and purpose that can be achieved by this application.

[0038] The utility model provides a reaming drill bit, which includes a slotted drill guide and a drill body; a central channel is provided inside the slotted drill guide; along the axial direction of the slotted drill guide, the slotted drill guide includes a head and a rod portion arranged in sequence; a slag removal slope is provided on the outer peripheral wall of the head, and the slag removal slope extends from the end face of the head to the back face of the head; and the slag removal slope is inclined outward from the end face of the head to the back face of the head; two slag removal slopes are provided, and the two slag removal slopes are located on opposite sides of the outer peripheral wall of the head; a first connecting hole connected to the central channel is provided inside the head, and the outlet of the first connecting hole is located on the end face of the head; the drill body is arranged on the rod portion. The reaming drill bit has a simple structure, few parts, low overall processing difficulty, and is easy to use, maintain, and inspect on site. In addition, the reaming drill bit is provided with the slag discharge slope and the first connecting hole at the head, so that airflow can be introduced into the head to cooperate with the slag discharge slope to discharge slag, which is very beneficial for removing collapsed materials, landfill materials and fallen blocks in the original construction hole. Therefore, during the reaming operation, abnormal wear of the head can be better avoided, thereby increasing the wear resistance of the reaming drill bit and improving its service life.

[0039] Please refer to Figures 1 to 5 In one embodiment, a reaming drill bit 100 is provided, comprising a slotted drill guide 10 and a drill body 20. During reaming, the slotted drill guide 10 is primarily used to remove debris such as collapsed material, landfill, and fallen blocks from the original construction hole. The slotted drill guide 10 also serves as a guide and straightener. The drill body 20 primarily serves to reame the hole.

[0040] Along the axial direction of the slotted drill guide 10, the slotted drill guide 10 includes a head 12 and a rod 13 arranged in sequence, and a central channel 11 is provided inside the slotted drill guide 10, and the drill body 20 is provided on the rod 13. The outer peripheral wall of the head 12 is provided with a slag discharge slope 121, and the slag discharge slope 121 extends from the end face 122 of the head 12 to the back face 123 of the head 12. The end face and the back face refer to the surfaces located on both sides of a component. During construction, the end face is relatively close to the bottom of the construction hole, while the back face is relatively far away from the bottom of the construction hole. From the end face 122 of the head 12 to the back face 123 of the head 12, the slag discharge slope 121 is tilted outward (that is, tilted away from the center axis). There are two slag discharge slopes 121, and the two slag discharge slopes 121 are located on opposite sides of the outer peripheral wall of the head 12, for example, Figure 2In the direction shown, one of the slag discharge slopes 121 is located on the upper side, and the other slag discharge slope 121 is located on the lower side. By providing two large slopes (i.e., the slag discharge slopes 121) on the head 12, the entire head 12 is flattened, similar to an "I"-shaped structure, which facilitates slag discharge from the head 12.

[0041] The head portion 12 has a first communication hole 124 formed therein, communicating with the central passage 11. The outlet of the first communication hole 124 is located at the end surface 122 of the head portion 12. In other words, the first communication hole 124 extends to the end surface 122 of the head portion 12, penetrating the end surface 122 of the head portion 12.

[0042] During slag discharge, the airflow enters from the central channel 11 and then branches out from the first connecting hole 124, so that the airflow is blown out from the end face 122 of the head 12, and then flows through the slag discharge slope 121, thereby discharging collapsed materials, landfill materials, fallen blocks and other debris in the original construction hole. During the hole expansion operation, abnormal wear of the head 12 can be avoided, thereby enhancing its wear resistance.

[0043] It is understandable that the structure of the reaming drill bit in the prior art is usually more complicated, with more parts, and during the reaming operation, the front end of the reaming drill bit is prone to abnormal wear, which affects the service life of the reaming drill bit.

[0044] The reaming drill bit 100 provided in this embodiment has a simple structure, few parts, low overall processing difficulty, and is easy to use, maintain, and inspect on site. After complex formation tests and promotional use, it can withstand complex working conditions and stress conditions at the bottom of the hole. The straight-line drill guide 10 has the characteristics of guidance and straightening when operating in the original construction hole. The reaming drill bit 100 has good overall stability in the hole and obvious anti-deflection effect. In addition, the head 12 is designed to be a flat "I"-shaped structure, which is very beneficial for clearing collapsed materials, landfills, fallen blocks and other debris in the original construction hole. It can avoid abnormal wear on the front end during reaming operations, enhance the wear resistance of the head 12, and at the same time ensure its straightening performance, thereby increasing the service life of the reaming drill bit 100.

[0045] Specifically, in one embodiment, the drill bit body 20 is an annular reaming drill bit.

[0046] Preferably, in one embodiment, a second connecting hole 125 is further defined within the head portion 12, communicating with the central passage 11. The outlet of the second connecting hole 125 is located on the slag discharge slope 121. In other words, the second connecting hole 125 extends to and penetrates the slag discharge slope 121. The provision of the second connecting hole 125 enhances the slag discharge effect and efficiency of the head portion 12.

[0047] Specifically, in one embodiment, the second communication hole 125 is tilted. From the end surface 122 of the head 12 toward the back surface 123 of the head 12, the second communication hole 125 tilts inward (ie, tilts toward the central axis).

[0048] Preferably, in one embodiment, one of the first connecting hole 124 and one of the second connecting hole 125 are provided, that is, one of the first connecting hole 124 and one of the second connecting hole 125 are provided. The outlet of the first connecting hole 124 is located on the end surface 122 of the head 12, close to one of the slag discharge inclined surfaces 121, and the outlet of the second connecting hole 125 is located on the other of the slag discharge inclined surfaces 121. For example, Figure 2 In the illustrated embodiment, the outlet of the first communicating hole 124 is located near the lower slag discharge slope 121, while the outlet of the second communicating hole 125 is located on the upper slag discharge slope 121. It is understood that the structural space in the head portion 12 is relatively small, and this structural design allows the first communicating hole 124 and the second communicating hole 125 to be provided within the limited space, while also further ensuring slag discharge effectiveness and efficiency.

[0049] Preferably, in one embodiment, a threaded hole 131 is formed at one end of the rod 13 away from the head 12. The threaded hole 131 facilitates docking of the rod 13 with components in the reaming device. Specifically, the threaded hole 131 is used to connect to a drill rod in the reaming device.

[0050] Preferably, in one embodiment, a first bevel 126 is provided at the edge of the end surface 122 of the head 12. The first bevel 126 can be provided around the edge of the end surface 122 of the head 12, while the slag removal bevel 121 can extend to remove a portion of the first bevel 126. First alloy teeth 127 are inlaid on the end surface 122 and the first bevel 126 of the head 12, respectively. The provision of the first alloy teeth 127 further reduces wear on the head 12, and the use of an inlaid alloy tooth structure is simpler than a welded alloy strip structure.

[0051] Preferably, in one embodiment, a third communicating hole 132 is defined within the shaft 13, communicating with the central channel 11. The outlet of the third communicating hole 132 is located on the outer peripheral wall of the shaft 13 and at the front side of the drill body 20. The outlet of the third communicating hole 132 being located at the front side of the drill body 20 means that the outlet of the third communicating hole 132 on the shaft 13 is closer to the head 12 than the drill body 20 on the shaft 13. Thus, during reaming operations, airflow from the central channel 11 can be directed out of the front side of the drill body 20 through the third communicating hole 132. A powder discharge groove 21 is defined on the outer peripheral wall of the drill body 20. During slag discharge, the air flow enters from the central channel 11 and then flows out through the third connecting hole 132, so that the air flow is blown out from the outer peripheral wall of the rod 13, and then flows through the powder discharge groove 21, thereby discharging debris, rock chips and other debris that fall during the hole expansion process.

[0052] Preferably, in one embodiment, a transverse groove 23 is provided on the end face 22 of the drill body 20, and the transverse groove 23 is connected to the powder discharge groove 21. The provision of the transverse groove 23 facilitates guiding the airflow to the powder discharge groove 21, thereby further improving the slag discharge effect and efficiency.

[0053] Preferably, in one embodiment, a second bevel 24 is provided on the edge of the end face 22 of the drill body 20 , and second alloy teeth 25 are respectively provided on the end face 22 and the second bevel 24 of the drill body 20 .

[0054] Preferably, in one embodiment, along the axial direction of the slotted drill guide 10, the rod portion 13 includes a front section 133, a middle section 134, and a tail section 135, which are arranged in sequence. The front section 133 is connected to the head 12, and the drill body 20 is arranged in the middle section 134. This structure can further ensure the guiding performance of the slotted drill guide 10. A tapered hole 26 is provided in the drill body 20, and the outer peripheral wall of the middle section 134 is provided with a tapered surface 1341 that matches the tapered hole 26. The matching of the tapered surface 1341 and the tapered hole 26 means that the tapers of the two are the same or similar, so that the drill body 20 can be connected to the outer periphery of the middle section 134 through the cooperation between the tapered surface 1341 and the tapered hole 26. The tapered surface structure provides a strong connection with high rigidity and coaxiality. Components can be replaced based on wear and tear, and suitable alloy drill bits can be selected based on the drillability of the formation, improving material utilization and economic efficiency. Specifically, the diameter of the tapered hole 26 gradually increases from the end face 22 of the drill body 20 toward the back of the drill body 20. That is, the maximum diameter of the tapered hole 26 is located on the back side of the drill body 20, while the minimum diameter of the tapered hole 26 is located on the end face 22 of the drill body 20. Accordingly, the diameter of the tapered surface 1341 is largest near the tail section 135 and smallest near the front section 133. This further ensures the reliability of the connection between the drill body 20 and the slotted drill guide 10 during construction.

[0055] At the same time, in one embodiment, a reaming device is also provided, which uses the reaming drill bit 100.

[0056] The above is only an embodiment of the present invention. It should be pointed out that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements are all within the scope of protection of the present invention.

Claims

1. A reaming drill bit, characterized in that: It includes a slotted drill guide and a drill body; A central channel is provided inside the slotted drill guide; Along the axial direction of the slotted drill guide, the slotted drill guide includes a head and a rod that are sequentially arranged; The outer peripheral wall of the head is provided with a slag discharge slope, which extends from the end face of the head to the back face of the head; and the slag discharge slope is inclined outward from the end face of the head toward the back face of the head; two slag discharge slopes are provided, and the two slag discharge slopes are located on opposite sides of the outer peripheral wall of the head; A first communicating hole communicating with the central channel is formed inside the head, and an outlet of the first communicating hole is located at an end surface of the head; The drill body is arranged on the rod portion.

2. The reaming drill bit according to claim 1, characterized in that A second communicating hole communicating with the central channel is further provided inside the head, and an outlet of the second communicating hole is located on the slag discharge slope.

3. The reaming drill bit according to claim 2, characterized in that The first communicating hole and the second communicating hole are each provided with one, the outlet of the first communicating hole is located on the end surface of the head close to one of the slag discharge slopes, and the outlet of the second communicating hole is located on the other of the slag discharge slopes.

4. The reaming drill bit according to claim 1, wherein: A threaded hole is formed at one end of the rod away from the head.

5. The reaming drill bit according to claim 1, characterized in that The end surface edge of the head is provided with a first inclined surface; The end surface of the head and the first inclined surface are respectively inlaid with first alloy teeth.

6. The reaming drill bit according to claim 1, characterized in that A third communicating hole is formed inside the rod portion and communicates with the central channel. An outlet of the third communicating hole is located on the outer peripheral wall of the rod portion and is located on the front side of the drill body. The outer peripheral wall of the drill body is provided with a powder discharge groove.

7. The reaming drill bit according to claim 6, characterized in that A transverse groove is provided on the end surface of the drill body, and the transverse groove is communicated with the powder discharge groove.

8. The reaming drill bit according to claim 1, wherein: The end face edge of the drill body is provided with a second bevel; Second alloy teeth are respectively provided on the end surface of the drill body and the second inclined surface.

9. The reaming drill bit according to claim 1, wherein: Along the axial direction of the slotted drill guide, the rod portion includes a front section, a middle section and a tail section arranged in sequence; The front section is connected to the head; The drill bit body is arranged in the middle section; A tapered hole is provided in the drill body, and a tapered surface matching the tapered hole is provided on the outer peripheral wall of the middle section.

10. A hole enlarging device, characterized in that: The invention relates to a reaming drill bit according to any one of claims 1 to 9.

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