Braking pile rock-socketed percussion drill hole-forming barrel drill bit

Abstract

The utility model relates to a raking pile rock-socketed percussion drill hole-forming barrel drill bit, which belongs to the technical field of barrel drill bits, and comprises a rock percussion drill hole-forming barrel drill bit body, a rotary drilling machine, a connecting shaft, a flange plate and a bolt, and a reinforcing mechanism is arranged at the top of the rock percussion drill hole-forming barrel drill bit body. The reinforcing mechanism comprises a reinforcing sleeve fixedly installed on the peripheral wall of the connecting shaft. According to the raking pile rock-socketed percussion drill hole-forming barrel drill bit, the overall compressive strength of a connecting shaft is enhanced through the effect of a reinforcing sleeve, a connecting plate is fixed through the effect of an arc-shaped mounting base and a screw, and meanwhile an arc-shaped supporting plate is mounted in the reinforcing sleeve; part of pressure is shared to the rotary drilling machine under the action of the arc-shaped supporting plate, the supporting rod and the connecting plate, the influence of gravity and pressure on the connecting shaft when the drill bit body of the rock impact drill hole-forming barrel drill inclines is reduced, and therefore the service life of the connecting shaft is prolonged, and the stability of the connecting shaft is improved.

Description

Technical Field

[0001] This utility model relates to the field of tubular drill bit technology, specifically a tubular drill bit for inclined pile rock embedding impact drilling. Background Technology

[0002] Currently, the application of straight piles embedded in rock is quite common in domestic building construction, bridge engineering, and port engineering. However, there are few examples of inclined piles embedded in rock in port engineering. While impact drilling is widely used in pile foundations for highways, railways, and various other engineering projects both domestically and internationally, it is rarely seen in the construction of inclined piles embedded in rock at wharves. In particular, the geological conditions at wharves are relatively complex, the diameter of the inclined piles is large, and the construction conditions at sea are complex, which is different from the construction of pile foundations on land and in the general sense.

[0003] Currently, the connection between the borehole drill bit of the inclined pile rock-embedded impact drilling rig and the rotary drilling rig is generally achieved by a flange connecting shaft. Since the borehole drill bit is used in an inclined state, the connecting shaft between the borehole drill bit and the rotary drilling rig will be subjected to additional pressure. Due to the tilt of the drill bit, the connecting shaft not only has to bear the weight of the drill bit, but also the axial component force generated by the tilt, which will increase the axial pressure of the connecting shaft. When the drill bit rotates in an inclined state, it will generate additional torsional torque, which will cause additional torsional stress on the connecting shaft, thereby reducing the service life and stability of the connecting shaft. Therefore, an inclined pile rock-embedded impact drilling rig borehole drill bit is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a drill bit for inclined pile rock embedding impact drilling, which has advantages such as reducing the pressure on the connecting shaft and improving the stability of use. It solves the problem that due to the tilt of the drill bit, the connecting shaft not only has to bear the weight of the drill bit, but also the axial component force generated by the tilt, which increases the axial pressure on the connecting shaft. When the drill bit rotates in an inclined state, it will generate additional torsional torque, which will cause additional torsional stress on the connecting shaft, thereby reducing the service life and stability of the connecting shaft.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rock impact drilling drill bit for inclined pile embedding, comprising a rock impact drilling drill bit body, a rotary drilling rig, a connecting shaft, a flange and bolts, wherein a reinforcement mechanism is provided on the top of the rock impact drilling drill bit body;

[0006] The reinforcement mechanism includes a reinforcement sleeve fixedly installed on the outer peripheral wall of the connecting shaft. Two arc-shaped mounting seats are fixedly installed on the outer peripheral wall of the top flange. A connecting plate is movably installed on the side of the arc-shaped mounting seat away from the flange. A support rod is fixedly installed on the bottom outer wall of the connecting plate. An arc-shaped support plate is fixedly installed on the side of the support rod close to the connecting shaft. Screws are movably installed inside the connecting plate.

[0007] Furthermore, two wire rope connectors are fixedly installed on the top outer wall of the rock impact drilling hole forming drill bit body, and the wire rope connectors have wire rope connection holes inside.

[0008] Furthermore, the connecting plate is arc-shaped, and the length between the front and rear outer walls of the connecting plate is the same as the length between the front and rear outer walls of the arc-shaped mounting seat. The arc-shaped mounting seat fits into the opposite outer wall of the connecting plate. A threaded groove is provided on the side of the arc-shaped mounting seat away from the flange. The screw passes through the internal thread of the connecting plate and is connected to the inside of the threaded groove and is of a suitable size.

[0009] Furthermore, the length of the reinforcing sleeve is two-thirds of the length of the connecting shaft.

[0010] Furthermore, the outer peripheral wall of the reinforcing sleeve is provided with an annular groove, and the arc-shaped support plate is movably installed inside the annular groove and is adapted in size. The arc-shaped support plate is in the shape of a semi-circle, and the two arc-shaped support plates form a ring. The diameter of the ring is the same as the diameter of the reinforcing sleeve.

[0011] Furthermore, the distance between the outer walls of the two opposing sides of the support rods is less than the diameter of the drill bit body of the rock impact drilling hole forming tube drill.

[0012] Furthermore, the connecting shaft is fixedly installed on the top of the rock impact drilling hole forming drill bit body, and there are two flanges, which are respectively fixedly installed on the outer wall of the connecting shaft and the rotary drilling rig on opposite sides. The rotary drilling rig is located above the rock impact drilling hole forming drill bit body, and the bolts are installed inside the two flanges.

[0013] Furthermore, a reinforcing connecting shaft is fixedly installed on the outer wall of one side of the two connecting plates, and the side of the reinforcing connecting shaft away from the connecting plate is slidably connected to the inside of the reinforcing sleeve.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] This inclined pile rock-embedded impact drilling barrel drill bit enhances the overall compressive strength of the connecting shaft through the reinforcement sleeve. The connecting plate is fixed by the arc-shaped mounting seat and screws, while the arc-shaped support plate is installed inside the reinforcement sleeve. Through the action of the arc-shaped support plate, support rod and connecting plate, part of the pressure is distributed to the rotary drilling rig, reducing the impact of gravity and pressure on the connecting shaft when the rock impact drilling barrel drill bit body is tilted, thereby improving the service life and stability of the connecting shaft. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0018] Figure 3 This is a cross-sectional structural diagram of the drill bit body of the rock impact drilling hole forming tube drill of this utility model;

[0019] Figure 4 This is a schematic diagram of the reinforcing sleeve structure of this utility model.

[0020] In the picture:

[0021] 1. Rock impact drilling hole forming drill bit body; 2. Rotary drilling rig; 3. Connecting shaft; 4. Flange; 5. Bolt; 6. Reinforcing sleeve; 7. Arc-shaped mounting seat; 8. Connecting plate; 9. Support rod; 10. Arc-shaped support plate; 11. Screw; 12. Wire rope connecting seat. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1, please refer to Figures 1 to 4 The rock impact drilling bit for inclined pile embedding in this embodiment includes a rock impact drilling bit body 1, a rotary drilling machine 2, a connecting shaft 3, a flange 4 and bolts 5. The top of the rock impact drilling bit body 1 is provided with a reinforcement mechanism.

[0024] The connecting shaft 3 is fixedly installed on the top of the rock impact drilling hole forming drill bit body 1. There are two flanges 4, which are fixedly installed on the outer wall of the connecting shaft 3 and the rotary drilling rig 2 on opposite sides. The rotary drilling rig 2 is located above the rock impact drilling hole forming drill bit body 1. Bolts 5 are installed inside the two flanges 4.

[0025] The reinforcement mechanism includes a reinforcement sleeve 6 fixedly installed on the outer peripheral wall of the connecting shaft 3. The length of the reinforcement sleeve 6 is two-thirds of the length of the connecting shaft 3. Two arc-shaped mounting seats 7 are fixedly installed on the outer peripheral wall of the top flange 4. A connecting plate 8 is movably installed on the side of the arc-shaped mounting seat 7 away from the flange 4. A support rod 9 is fixedly installed on the bottom outer wall of the connecting plate 8. The distance between the outer walls of the two support rods 9 on opposite sides is less than the diameter of the drill bit body 1 of the rock impact drilling hole forming drill. An arc-shaped support plate 10 is fixedly installed on the side of the support rod 9 close to the connecting shaft 3. An annular groove is opened on the outer peripheral wall of the reinforcement sleeve 6. The arc-shaped support plate 10 is movably installed inside the annular groove and is of the same size. The arc-shaped support plate 10 is semi-annular in shape. The two arc-shaped support plates 10 form a ring. The diameter of the ring is the same as the diameter of the reinforcement sleeve 6.

[0026] Screws 11 are movably installed inside the connecting plate 8. The connecting plate 8 is arc-shaped. The length between the front and rear outer walls of the connecting plate 8 is the same as the length between the front and rear outer walls of the arc-shaped mounting seat 7. The arc-shaped mounting seat 7 fits against the opposite outer wall of the connecting plate 8. A threaded groove is opened on the side of the arc-shaped mounting seat 7 away from the flange 4. The screws 11 penetrate the internal threads of the connecting plate 8 and are connected inside the threaded groove and are of the same size. Two wire rope connecting seats 12 are fixedly installed on the top outer wall of the rock impact drilling hole forming drill bit body 1. The wire rope connecting seats 12 have wire rope connecting holes inside.

[0027] In this embodiment, the rock impact drilling rig body 1 is adaptable to various pile diameters and complex geological conditions, and has a relatively small self-weight, requiring less platform space and reducing the gravitational pressure on the connecting shaft 3. The drill bit can also be recycled and reused, saving construction costs. The structure of the rock impact drilling rig body 1 can be rationally designed, and the drill bit diameter can be appropriately selected to ensure that the rock embedment slope of the inclined pile remains consistent with the slope of the steel casing during construction, and to ensure that the pile diameter meets design requirements.

[0028] In Example 2, a reinforcing connecting shaft is provided based on Example 1. The reinforcing connecting shaft further reinforces the connection of the reinforcing sleeve 6, thereby additionally sharing the pressure of the connecting shaft 3 during use and improving the stability of the connecting shaft 3.

[0029] The working principle of the above embodiments is as follows:

[0030] When reinforcing the connecting shaft 3, first move the two connecting plates 8 to the left and right respectively so that they fit against the outer wall of the arc-shaped mounting base 7. At this time, the arc-shaped support plate 10 will move into the interior of the reinforcing sleeve 6. Then, the screw 11 is threaded through the interior of the connecting plate 8 and connected to the interior of the arc-shaped mounting base 7. This completes the installation of the arc-shaped support plate 10. When the rock impact drilling hole forming drill bit body 1 is used at an angle, the connecting plate 8, support rod 9 and arc-shaped support plate 10 support the connecting shaft 3, absorbing and transferring some of the pressure, thereby improving the service life and stability of the connecting shaft 3.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rock-embedded rock impact drilling bit, comprising a rock impact drilling bit body (1), a rotary drilling rig (2), a connecting shaft (3), a flange (4), and bolts (5), characterized in that: The top of the rock impact drilling hole forming tube drill bit body (1) is provided with a reinforcement mechanism; The reinforcement mechanism includes a reinforcement sleeve (6) fixedly installed on the outer peripheral wall of the connecting shaft (3), two arc-shaped mounting seats (7) fixedly installed on the outer peripheral wall of the top flange (4), a connecting plate (8) movably installed on the side of the arc-shaped mounting seat (7) away from the flange (4), a support rod (9) fixedly installed on the bottom outer wall of the connecting plate (8), an arc-shaped support plate (10) fixedly installed on the side of the support rod (9) close to the connecting shaft (3), and screws (11) movably installed inside the connecting plate (8).

2. The inclined pile rock-embedded impact drilling barrel drill bit according to claim 1, characterized in that: The top outer wall of the rock impact drilling hole forming drill bit body (1) is fixedly equipped with two wire rope connecting seats (12), and the wire rope connecting seats (12) have wire rope connecting holes inside.

3. The inclined pile rock-embedded impact drilling barrel drill bit according to claim 1, characterized in that: The connecting plate (8) is arc-shaped. The length between the front and rear outer walls of the connecting plate (8) is the same as the length between the front and rear outer walls of the arc-shaped mounting seat (7). The arc-shaped mounting seat (7) and the outer wall of the connecting plate (8) on the opposite side fit together. The arc-shaped mounting seat (7) has a threaded groove on the side away from the flange (4). The screw (11) passes through the internal thread of the connecting plate (8) and is connected to the inside of the threaded groove and is of the same size.

4. The inclined pile rock-embedded impact drilling barrel drill bit according to claim 1, characterized in that: The length of the reinforcing sleeve (6) is two-thirds the length of the connecting shaft (3).

5. The drill bit for inclined pile rock-embedded impact drilling as described in claim 1, characterized in that: The outer peripheral wall of the reinforcing sleeve (6) is provided with an annular groove. The arc-shaped support plate (10) is movably installed inside the annular groove and is of the same size. The arc-shaped support plate (10) is in the shape of a semi-circle. The two arc-shaped support plates (10) form a ring. The diameter of the ring is the same as the diameter of the reinforcing sleeve (6).

6. The inclined pile rock-embedded impact drilling barrel drill bit according to claim 1, characterized in that: The distance between the outer walls of the two support rods (9) on opposite sides is less than the diameter of the drill bit body (1) of the rock impact drilling hole forming tube drill.

7. The inclined pile rock-embedded impact drilling barrel drill bit according to claim 1, characterized in that: The connecting shaft (3) is fixedly installed on the top of the rock impact drilling hole forming drill bit body (1). There are two flanges (4) and they are fixedly installed on the outer wall of the connecting shaft (3) and the rotary drilling machine (2) on opposite sides. The rotary drilling machine (2) is located above the rock impact drilling hole forming drill bit body (1). The bolts (5) are installed inside the two flanges (4).

8. The inclined pile rock-embedded impact drilling barrel drill bit according to claim 1, characterized in that: A reinforcing connecting shaft is fixedly installed on the outer wall of the two connecting plates (8) on opposite sides, and the side of the reinforcing connecting shaft away from the connecting plate (8) is slidably connected to the inside of the reinforcing sleeve (6).

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