A drill bit with vibration function

Abstract

The present invention relates to the technical field of vibration grouting of sandy soil strata in geotechnical engineering, and in particular to a drill bit with a vibration function; the drill bit comprises a drill bit body, a housing cavity is provided in the drill bit body, a vibration component is provided in the housing cavity, the vibration component is connected to the inner bottom of the drill bit through a connecting column, the vibration component comprises a piston driving part and a vibration shaft provided on both sides of the piston driving part, the piston driving part drives the vibration shaft to reciprocate in the horizontal direction to hit the inner wall of the drill bit body; the drill bit is provided with a housing cavity and a vibration component in the drill bit body, the vibration component comprises a piston driving part and a vibration shaft provided on both sides of the piston driving part, the piston driving part drives the vibration shaft to reciprocate in the horizontal direction to hit the inner wall of the drill bit body, during the construction operation of the drill bit, the power shaft collides with the inner wall of the drill bit body to generate a vibration effect, thereby causing the sand and soil around the drill bit to vibrate, generating a liquefaction phenomenon, which is beneficial to the diffusion of slurry to achieve vibration grouting.

Description

Technical Field

[0001] The invention relates to the technical field of vibration grouting of sandy soil layers in geotechnical engineering, and in particular to a drill bit with a vibration function. Background Art

[0002] When drilling in saturated sand or clay, the shear strength of the soil is relatively large, and the drill bit is not easy to damage the soil structure. The drill bit in the existing technology does not have a vibration function. Grouting uses an appropriate method to inject certain solidifiable slurries into the cracks or pores of the rock foundation, so that the rock and soil become a new structure with high strength, good impermeability and high stability, thereby achieving the purpose of improving its physical and mechanical properties. According to the penetration method of the slurry, the grouting process can be roughly divided into penetration grouting, compaction grouting, splitting grouting, high-pressure rotary grouting, rotary grouting, etc. Although the grouting method has developed relatively maturely in many aspects, for sandy soil formations, the grouting effect is not satisfactory, and the slurry is often difficult to inject. The drill bit commonly used in vibration grouting construction does not have a vibration function itself, and the drilling effect is poor. Patent document No. 202022422968.7 discloses a construction device for thickening soft soil foundations with long spiral cast-in-place piles, which does not have a vibration effect. Summary of the Invention

[0003] In order to solve the above problems in the prior art, the present invention provides a drill bit with a vibration function.

[0004] In order to achieve the above-mentioned objectives, the present invention proposes a drill bit with a vibration function, comprising: a drill bit body, a accommodating chamber is provided in the drill bit body, a vibration component is provided in the accommodating chamber, the vibration component is connected to the inner bottom of the drill bit through a connecting column, the vibration component includes a piston driving part and a vibration shaft provided on both sides of the piston driving part, the piston driving part drives the vibration shaft to reciprocate in the horizontal direction to hit the inner wall of the drill bit body.

[0005] As an optional embodiment, in the drill bit with vibration function provided by the present invention, the piston driving part includes a shell, a connecting rod, an air guide block and a piston, a cavity is provided in the shell, an air inlet is opened on the shell, the two ends of the connecting rod are respectively connected to the piston and the air guide block, the two ends of the piston are respectively connected to the vibration shaft, the air guide block and the piston divide the cavity into a left air chamber and a right air chamber, the left air chamber and the right air chamber are operably connected through a connecting channel, and compressed gas enters the left air chamber or the right air chamber through the air inlet to drive the piston to reciprocate.

[0006] As an optional embodiment, in the drill bit with vibration function provided by the present invention, the connecting channel includes a first air channel and a second air channel, and the first air channel and the second air channel are arranged at intervals and staggered at the bottom of the shell; one port of the first air channel is connected to the right air chamber, and the other port is provided with a one-way valve and is located on the moving path of the piston; one port of the second air channel is connected to the left air chamber, and the other port is provided with a one-way valve and is located on the moving path of the piston.

[0007] As an optional embodiment, in the drill bit with vibration function provided by the present invention, an upper slide rail is provided inside the air guide block, and pulleys are provided at both ends of the connecting rod, and the pulley at one end of the connecting rod can move inside the upper slide rail; a lower slide rail is provided inside the piston, and the pulley at the other end of the connecting rod can move inside the lower slide rail, and the middle position of the connecting rod is fixed by a rotating shaft.

[0008] As an optional embodiment, in the drill bit with vibration function provided by the present invention, a blocking member is provided between the piston and the air guide block and at a position corresponding to the upper slide rail, and a blocking member is also provided between the piston and the air guide block and at a position corresponding to the lower slide rail.

[0009] As an optional embodiment, in the drill bit with vibration function provided by the present invention, the left end of the piston is provided with a left air vent, and the gas in the left air chamber enters the first air duct through the left air vent, and the first air duct is connected to the right air chamber.

[0010] As an optional embodiment, in the drill bit with vibration function provided by the present invention, the right end of the piston is provided with a right air vent, and the gas in the right air chamber enters the second air duct through the right air vent, and the second air duct is connected to the left air chamber.

[0011] As an optional embodiment, in the drill bit with vibration function provided by the present invention, the left air hole is connected to the end of the first air channel provided with a one-way valve, and the right air hole is connected to the end of the second air channel provided with a one-way valve.

[0012] As an optional embodiment, in the drill bit with vibration function provided by the present invention, a left exhaust hole and a right exhaust hole are provided on the side wall of the shell, the left exhaust hole is connected to the left air chamber, and the right exhaust hole is connected to the right air chamber.

[0013] Compared with the prior art, the technical solution of the present invention has the following beneficial effects: the drill bit with vibration function provided by the present invention is provided with an accommodating cavity in the drill bit body, and a vibration component is arranged in the accommodating cavity. The vibration component includes a piston driving part and a vibration shaft arranged on both sides of the piston driving part. The piston driving part drives the vibration shaft to reciprocate in the horizontal direction to hit the inner wall of the drill bit body; during the operation of the drill bit, the power shaft collides with the inner wall of the drill bit body to generate a vibration effect, and the drill bit is impacted and vibrates, thereby causing the sand and soil around the drill bit to vibrate and produce a liquefaction phenomenon, which is beneficial to the diffusion of slurry, thereby achieving the purpose of vibration grouting; in addition, due to the existence of the vibration effect, the smooth flow of slurry is guaranteed, and the problem of easy blockage during the operation of the drill bit is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention 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 invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0015] Figure 1 A schematic structural diagram of a drill bit with a vibration function provided by the present invention;

[0016] Figure 2 A schematic structural diagram of a drill bit with a vibration function provided by the present invention in a first working state;

[0017] Figure 3 This is a structural schematic diagram of the second working state of the drill bit with vibration function provided by the present invention.

[0018] [Description of Reference Numerals]

[0019] 1: drill bit body; 2: accommodating cavity;

[0020] 3: Piston drive unit; 31: Housing; 32: Connecting rod; 33: Air guide block; 34: Upper slide rail; 35: Piston; 36: Lower slide rail; 37: Left air vent; 38: Right air vent; 39: Air inlet; 40: Left air chamber; 41: Right air chamber; 42: Rotating shaft; 43: Pulley;

[0021] 4: Vibration shaft; 5: Connecting column; 6: Blocking member; 7: First air duct; 8: Second air duct; 9: One-way valve; 10: Left exhaust hole; 11: Right exhaust hole. DETAILED DESCRIPTION

[0022] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0023] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0025] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] The present invention provides a drill bit with a vibration function, such as Figure 1-Figure 3 As shown, it includes a drill body 1, a accommodating chamber 2 is provided in the drill body 1, a vibration component is provided in the accommodating chamber 2, the vibration component is connected to the inner bottom of the drill bit through a connecting column 5, and the vibration component includes a piston driving part 3 and a vibration shaft 4 provided on both sides of the piston driving part 3. The piston driving part 3 drives the vibration shaft 4 to reciprocate in the horizontal direction to hit the inner wall of the drill body 1.

[0027] The drill bit with vibration function provided by the present invention is provided with an accommodating chamber 2 in the drill bit body 1, and a vibration component is arranged in the accommodating chamber 2. The vibration component includes a piston driving part 3 and a vibration shaft 4 arranged on both sides of the piston driving part 3. The piston driving part 3 drives the vibration shaft 4 to reciprocate in the horizontal direction to hit the inner wall of the drill bit body 1; during the operation of the drill bit, the power shaft collides with the inner wall of the drill bit body 1 to produce a vibration effect, and the drill bit is impacted and vibrates, thereby causing the sand and soil around the drill bit to vibrate, the pore water pressure to increase, the effective stress to reduce, and a softening zone to form, thereby improving the grouting environment and achieving the purpose of vibration grouting; in addition, due to the existence of the vibration effect, the smooth flow of slurry is guaranteed, and the problem of easy blockage during the operation of the drill bit is avoided.

[0028] Furthermore, the piston driving unit 3 includes a shell 31, a connecting rod 32, an air guide block 33 and a piston 35. A cavity is provided in the shell 31, and an air inlet 39 is opened on the shell 31. The two ends of the connecting rod 32 are respectively connected to the piston 35 and the air guide block 33, and the two ends of the piston 35 are respectively connected to the vibration shaft 4. The air guide block 33 and the piston 35 divide the cavity into a left air chamber 40 and a right air chamber 41. The left air chamber 40 and the right air chamber 41 are operably connected through a connecting channel. The compressed gas enters the left air chamber 40 or the right air chamber 41 through the air inlet 39 to drive the piston 35 to reciprocate.

[0029] As an optional embodiment, in the drill bit with vibration function provided by the present invention, the connecting channel includes a first air channel 7 and a second air channel 8, which are alternately arranged at the bottom of the housing 31. One end of the first air channel 7 communicates with the right air chamber 41, and the other end is provided with a one-way valve 9 and is located in the movement path of the piston 35. One end of the second air channel 8 communicates with the left air chamber 40, and the other end is provided with a one-way valve 9 and is located in the movement path of the piston 35. The left end of the piston 35 is provided with a left air hole 37, through which gas from the left air chamber 40 enters the first air channel 7, connecting the first air channel 7 to the right air chamber 41. The right end of the piston 35 is provided with a right air hole 38, through which gas from the right air chamber 41 enters the second air channel 8, connecting the second air channel 8 to the left air chamber 40. The first air channel 7 and the second air channel 8 are of the same length.

[0030] like Figure 1 As shown, an upper slide rail 34 is provided inside the air guide block 33, and pulleys 43 are provided at both ends of the connecting rod 32. The pulley 43 at one end of the connecting rod 32 can move inside the upper slide rail 34; a lower slide rail 36 is provided inside the piston 35, and the pulley 43 at the other end of the connecting rod 32 can move in the lower slide rail 36, and the middle position of the connecting rod 32 is fixed by a rotating shaft 42; the left and right movement of the piston 35 drives the pulley 43 in the lower slide rail 36 to move left and right, thereby driving the pulley 43 at the other end of the connecting rod 32 to move in the upper slide rail 34, thereby driving the air guide block 33 to move in the opposite direction.

[0031] In the drill bit with vibration function provided by the present invention, a blocking member 6 is provided between the piston 35 and the air guide block 33 and at a position corresponding to the upper slide rail 34. A blocking member 6 is also provided between the piston 35 and the air guide block 33 and at a position corresponding to the lower slide rail 36 to play a limiting role and prevent the pulley 43 from sliding out of the upper slide rail 34 and the lower slide rail 36.

[0032] Furthermore, the left air vent 37 is connected to one end of the first air passage 7 provided with a one-way valve 9, and the right air vent 38 is connected to one end of the second air passage 8 provided with a one-way valve 9; the housing 31 is respectively provided with a first air passage 7 and a second air passage 8, and the left air vent 37 and the right air vent 38 are respectively provided on the left and right sides of the piston 35. When the piston 35 moves to a certain position, the right air vent 38 is connected to the second air passage 8, and the inlet end of the second air passage 8 is provided with a one-way valve 9, that is, the right air vent 38 is connected to the second air passage 8. A one-way valve 9 is provided at the joint of the duct 8 to control the high-pressure gas that has done work in the right air chamber 41 to enter the second air duct 8 and then enter the left air chamber 40, thereby achieving the effect of energy saving, and can prevent the left air chamber 40 from entering the right air chamber 41 when the pressure is greater than that of the right air chamber 41. A left one-way valve 9 is provided at the air inlet end of the first air duct 7, that is, a one-way valve 9 is provided at the joint of the left air hole 37 and the first air duct 7, thereby achieving the effect of energy saving, and can prevent the right air chamber 41 from entering the left air chamber 40 when the pressure is greater than that of the left air chamber 40.

[0033] As an optional embodiment, in the drill bit with vibration function provided by the present invention, a left exhaust hole 10 and a right exhaust hole 11 are provided on the side wall of the shell 31, the left exhaust hole 10 is connected to the outside atmosphere, the left exhaust hole 10 is connected to the left air chamber 40, the right exhaust hole 11 is connected to the outside atmosphere, and the right exhaust hole 11 is connected to the right air chamber 41 to discharge the exhaust gas generated in the left air chamber 40 and the right air chamber 41.

[0034] In the drill bit with vibration function provided by the present invention, the left and right sides of the piston 35 are connected to the vibration shaft 4, and the vibration shaft 4 collides with the inner wall of the drill bit body 1. The vibration shaft 4 on the left and the power shaft on the right can respectively collide with the drill bit body 1 during operation.

[0035] The working principle of the drill bit with vibration function provided by the present invention is as follows: Figure 1 As shown, the compressed air enters the left part of the air guide block 33 through the air inlet 39 of the shell 31, and enters the left air chamber 40 all the way to the left. At this time, the left exhaust hole 10 is blocked by the piston 35, and the left air hole 37 is not connected to the left air duct. The pressure in the left air chamber 40 rises, thereby pushing the piston 35 to move quickly to the right, and the pulley 43 in the lower slide rail 36 moves downward, driving the connecting rod 32 to rotate counterclockwise, and the pulley 43 in the upper slide rail 34 moves upward, driving the air guide block 33 to move to the left.

[0036] When the piston 35 moves to the right to the middle position, the pulley 43 in the lower slide rail 36 starts to move upward, continuing to drive the connecting rod 32 to rotate counterclockwise, and the pulley 43 in the upper slide rail 34 starts to move downward, continuing to drive the air guide block 33 to move to the left.

[0037] When the piston 35 moves rightward until the left vent hole 37 is connected to the first vent channel 7, Figure 2 As described above, the air guide block 33 has blocked the air inlet 39, the one-way valve 9 in the air inlet end of the first air duct 7 is opened, and the gas in the left air chamber 40 enters the right air chamber 41 through the left air hole 37 and then through the first air duct 7. At this time, the right exhaust hole 11 is covered by the piston 35, and the pressure in the right air chamber 41 begins to rise.

[0038] When the piston 35 moves to the right and is about to move to the limit position, the upper right side of the air guide block 33 is ventilated, and the compressed air enters the right air chamber 41 through the air inlet 39. The high-pressure gas prevents the piston 35 from continuing to move to the right until the limit position is reached. The vibration shaft 4 on the right hits the inner wall of the drill body 1, achieving a vibration effect. Figure 3 As shown, at this time, the left exhaust hole 10 is not covered by the piston 35, and is connected to the atmosphere, and the exhaust gas from the left air chamber 40 is discharged into the atmosphere; the pressure in the right air chamber 41 continues to increase, and the right air hole 38 is not connected to the second air duct 8, thereby pushing the piston 35 to move rapidly to the left, and the pulley 43 in the lower slide rail 36 moves downward, driving the connecting rod 32 to rotate clockwise, and the pulley 43 in the upper slide rail 34 moves upward, driving the air guide block 33 to move to the right.

[0039] When the piston 35 moves to the left to the middle position, the pulley 43 in the lower slide rail 36 starts to move upward, continuing to drive the connecting rod 32 to rotate clockwise, and the pulley 43 in the upper slide rail 34 starts to move downward, continuing to drive the air guide block 33 to move to the right.

[0040] When the piston 35 moves to the point where the right air vent 38 is connected to the second air duct 8, the air guide block 33 has blocked the air inlet 39, and the one-way valve 9 in the air inlet end of the second air duct 8 is opened. The gas in the right air chamber 41 enters the left air chamber 40 through the right air vent 38 and the second air duct 8. At this time, the left exhaust hole 10 is blocked by the piston 35, and the pressure in the left air chamber 40 begins to rise.

[0041] When the piston 35 moves to the left and is about to reach the limit position, the upper left side of the air guide block 33 is ventilated, and the compressed air enters the left air chamber 40 through the air inlet 39. The high-pressure gas prevents the piston 35 from continuing to move to the left until the limit position. The vibration shaft 4 on the left hits the drill body 1 to achieve a vibration effect. At this time, the right exhaust hole 11 is not covered by the piston 35, and is connected to the atmosphere, thereby discharging the exhaust gas in the right air chamber 41 into the atmosphere.

[0042] The piston 35 reciprocates and continuously performs the above-mentioned action, thereby driving the vibration shafts 4 on both sides to continuously hit the inner wall of the drill body 1, thereby achieving a vibration effect.

[0043] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A drill bit with vibration function, characterized in that: The drill bit comprises a drill body (1), wherein a receiving chamber (2) is provided in the drill body (1), wherein a vibration assembly is provided in the receiving chamber (2), wherein the vibration assembly is connected to the inner bottom of the drill bit via a connecting column (5), wherein the vibration assembly comprises a piston driving part (3) and a vibration shaft (4) provided on both sides of the piston driving part (3), wherein the piston driving part (3) drives the vibration shaft (4) to reciprocate in the horizontal direction to strike the inner wall of the drill bit body (1); wherein the piston driving part (3) comprises a shell (31), a connecting rod (32), an air guide block (33) and a piston (35), wherein the shell (31) A cavity is provided inside the housing (31), an air inlet (39) is opened on the housing (31), two ends of the connecting rod (32) are respectively connected to the piston (35) and the air guide block (33), two ends of the piston (35) are respectively connected to the vibration shaft (4), the air guide block (33) and the piston (35) divide the cavity into a left air chamber (40) and a right air chamber (41), the left air chamber (40) and the right air chamber (41) are operably connected through a connecting channel, and compressed gas enters the left air chamber (40) or the right air chamber (41) through the air inlet (39) to drive the piston (35) to reciprocate.

2. The drill bit with vibration function according to claim 1, characterized in that: The connecting passage comprises a first air passage (7) and a second air passage (8), wherein the first air passage (7) and the second air passage (8) are arranged alternately at the bottom of the shell (31); one end of the first air passage (7) is communicated with the right air chamber (41), and the other end is provided with a one-way valve (9) and is located on the moving path of the piston (35); one end of the second air passage (8) is communicated with the left air chamber (40), and the other end is provided with a one-way valve (9) and is located on the moving path of the piston (35).

3. The drill bit with vibration function according to claim 2, characterized in that: An upper slide rail (34) is provided inside the air guide block (33), and pulleys (43) are provided at both ends of the connecting rod (32). The pulley (43) at one end of the connecting rod (32) can move inside the upper slide rail (34); a lower slide rail (36) is provided inside the piston (35), and the pulley (43) at the other end of the connecting rod (32) can move inside the lower slide rail (36). The middle position of the connecting rod (32) is fixed by a rotating shaft (42).

4. The drill bit with vibration function according to claim 3, characterized in that: A blocking member (6) is provided between the piston (35) and the air guide block (33) and at a position corresponding to the upper slide rail (34). A blocking member (6) is also provided between the piston (35) and the air guide block (33) and at a position corresponding to the lower slide rail (36).

5. The drill bit with vibration function according to claim 2, characterized in that: A left vent hole (37) is provided at the left end of the piston (35), and the gas in the left air chamber (40) enters the first air passage (7) through the left vent hole (37), and the first air passage (7) is connected to the right air chamber (41).

6. The drill bit with vibration function according to claim 5, characterized in that: A right vent hole (38) is provided at the right end of the piston (35), and the gas in the right air chamber (41) enters the second air passage (8) through the right vent hole (38), and the second air passage (8) is connected to the left air chamber (40).

7. The drill bit with vibration function according to claim 6, characterized in that: The left vent hole (37) is connected to one end of the first air passage (7) provided with a one-way valve (9), and the right vent hole (38) is connected to one end of the second air passage (8) provided with a one-way valve (9).

8. The drill bit with vibration function according to claim 2, characterized in that: A left exhaust hole (10) and a right exhaust hole (11) are provided on the side wall of the shell (31); the left exhaust hole (10) is communicated with the left air chamber (40), and the right exhaust hole (11) is communicated with the right air chamber (41).

Images