Low-noise punching and reaming equipment for pile foundation engineering

Abstract

The invention relates to the field of pile foundation engineering equipment, and discloses pile foundation engineering low-noise punching and chambering equipment which comprises a semi-cylindrical drilling barrel. The drill rod is rotationally connected to the drill cylinder, and the peripheral side of the drill rod is fixedly connected with a spiral drilling tool; the power piece is mounted at the top of the drilling barrel and used for driving the drilling rod to rotate; and the cutting tooth mechanism is mounted on the edge of the side wall of the drilling barrel and used for cutting a soil body. The semi-cylindrical drilling barrel is arranged on the peripheral side of the spiral drilling tool, a closed area is formed between the drilling barrel and an uncut soil body in the reaming process, the risk that the soil body is disengaged under the centrifugal effect is reduced, the phenomenon that the soil body is accumulated at the bottom of a pile hole is reduced, it is ensured that the cut soil body can be smoothly discharged through the spiral drilling tool, and the drilling efficiency is improved. And the soil body discharging efficiency is further improved.

Description

Technical Field

[0001] The invention relates to the field of pile foundation engineering equipment, in particular to low-noise drilling and expanding equipment for pile foundation engineering. Background Art

[0002] In modern construction projects, pile foundations are the basic bearing structures of buildings, and their construction quality and efficiency directly affect the stability and safety of the entire building. Traditional pile foundation drilling and expansion equipment often produces a lot of noise during operation, which not only seriously interferes with the living and working environment of residents around the construction site, causing a large number of noise pollution complaints, but also in some areas with strict noise restrictions, such as city centers, hospitals, schools, etc., the use of traditional equipment is greatly restricted, seriously affecting the normal development of the project.

[0003] The patent with announcement number CN222121428U discloses a low-noise drilling and expanding equipment for pile foundation engineering. In this scheme, the second motor drives the screw to rotate, and the movable seat drives the rotating mechanism to move, so as to control the diameter of the auger and the center of the rotating seat, and then control the size of the hole drilled by the auger. The first motor drives the rotating seat to rotate, so that the auger moves along the circumference of the hole, so that holes of various sizes can be drilled when only a small-diameter auger is used. This method reduces noise to a certain extent, and at the same time reduces the time consumed by replacing augers of different specifications and sizes.

[0004] However, when this method is used to expand the drill hole, the vertical projection size of the auger is smaller than the size of the drill hole, causing part of the cut soil to escape from the auger under the centrifugal force and accumulate at the bottom of the pile hole. This prevents part of the soil from being smoothly transferred to the ground, thereby reducing the hole expansion efficiency. Summary of the invention

[0005] The present invention aims to provide a low-noise drilling and expanding device for pile foundation engineering to overcome the above-mentioned shortcomings.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] A low-noise drilling and expanding equipment for pile foundation engineering, comprising:

[0008] A semi-cylindrical drill tube;

[0009] A drill rod rotatably connected to the drill barrel, wherein a spiral drill cutter is fixedly connected to the circumference of the drill rod;

[0010] A power member installed on the top of the drill pipe, the power member is used to drive the drill pipe to rotate; and

[0011] A cutting tooth mechanism is installed on the edge of the side wall of the drill tube, and the cutting tooth mechanism is used for cutting soil.

[0012] Furthermore, the cutting tooth mechanism comprises:

[0013] A fixed tooth assembly arranged in a vertical direction and fixedly connected to the edge of the side wall of the drill tube, wherein the fixed tooth assembly is provided with a plurality of first teeth protruding from the edge of the side wall of the drill tube and used for cutting soil;

[0014] a sliding tooth assembly arranged in the vertical direction and slidably connected to the edge of the side wall of the drill tube, the sliding tooth assembly being arranged on a side of the fixed tooth assembly away from the drill rod, the sliding tooth assembly being provided with a plurality of second teeth protruding from the edge of the side wall of the drill tube and used for cutting soil; and

[0015] A driving assembly is provided relative to the fixed tooth assembly and is used for driving the sliding tooth assembly to slide relative to the fixed tooth assembly.

[0016] Furthermore, the sliding tooth assembly comprises:

[0017] a plurality of first sliding cavities arranged in the sliding tooth assembly at intervals along the vertical direction, and

[0018] A sliding block slidably connected in the first sliding cavity in a one-to-one correspondence along the horizontal direction, wherein a side wall of the sliding block close to the drill rod is provided with a first inclined surface, and the first inclined surface is inclined from top to bottom in a direction away from the drill rod;

[0019] The fixed tooth assembly comprises:

[0020] A plurality of second sliding cavities are arranged in the sliding tooth assembly at intervals along the vertical direction, the second sliding cavities are connected to the first sliding cavities in a one-to-one correspondence, a second inclined surface matching the first inclined surface is provided in the second sliding cavity, and the first inclined surface is slidably connected to the second inclined surface;

[0021] The driving assembly is used to drive the sliding block to slide upward along the second inclined surface.

[0022] Furthermore, the cutting tooth mechanism further includes a reset component. When the driving force of the driving component decreases, the reset component can overcome the driving force of the driving component and drive the sliding block to slide downward along the second inclined surface.

[0023] Furthermore, a first magnet is provided on one side of the upper end of the sliding block close to the drill rod, and the driving assembly is a plurality of second magnets fixedly connected to the edge of the spiral drill cutter and in a bar-shaped spiral shape. The plurality of second magnets are arranged one by one opposite to the plurality of first magnets and can attract each other.

[0024] Furthermore, the sliding block is embedded in the first sliding cavity and the second sliding cavity at the same time.

[0025] Furthermore, the reset component comprises:

[0026] A fixed sleeve embedded above the top plate of the second sliding cavity;

[0027] a sliding sleeve slidably connected in the fixed sleeve along a vertical direction, wherein the lower end of the sliding sleeve is slidably connected to the top end of the sliding block; and

[0028] An elastic member is embedded in the fixed sleeve and the sliding sleeve, and two ends of the elastic member are respectively connected to the fixed sleeve and the sliding sleeve. The elastic member is used to drive the sliding sleeve to slide downward.

[0029] Furthermore, the lower edge of the spiral drill cutter and the lower end side wall of the drill rod are both provided with drill teeth.

[0030] Furthermore, the top plate of the drill tube is provided with a soil discharge hole, and the bottom plate of the drill tube is provided with a soil intake hole.

[0031] Furthermore, the power component is a hydraulic motor, and the hydraulic motor is transmission-connected to the drill pipe; a connecting plate is fixedly connected to the upper end of the drill barrel.

[0032] Compared with the prior art, the present invention has at least the following advantages:

[0033] The present invention arranges a semi-cylindrical drill barrel on the circumferential side of the spiral drill cutter, and during the hole expansion process, a closed area is formed between the drill barrel and the uncut soil, thereby reducing the risk of soil falling out under the action of centrifuge and reducing the phenomenon of soil accumulation at the bottom of the pile hole, ensuring that the cut soil can be discharged smoothly through the spiral drill cutter, and further improving the soil discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 these drawings without paying creative labor.

[0035] Figure 1 It is a schematic diagram of the overall structure of the low-noise drilling and expanding equipment for pile foundation engineering of the present invention;

[0036] Figure 2 A cross-sectional view of the low-noise drilling and expanding equipment for pile foundation engineering of the present invention;

[0037] Figure 3 For the present invention Figure 1A partial enlarged view of the middle A area;

[0038] Figure 4 It is a schematic diagram of assembling the sliding gear assembly and the reset assembly of the present invention;

[0039] Figure 5 This is a construction flow chart of drilling and expanding holes of the present invention.

[0040] Figure numerals: 1, drill barrel; 2, drill rod; 3, spiral drill cutter; 4, power part; 5, fixed tooth assembly; 6, first tooth; 7, sliding tooth assembly; 8, second tooth; 9, first sliding cavity; 10, sliding block; 11, first inclined surface; 12, second sliding cavity; 13, second inclined surface; 14, first magnet; 15, second magnet; 16, fixed sleeve; 17, sliding sleeve; 18, elastic part; 19, drill tooth; 20, soil discharge hole; 21, soil entry hole; 22, connecting plate; 100, initial pile hole; 200, hole expansion direction; 300, terminal pile hole. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Reference Figure 1-2 The present invention relates to a low-noise drilling and expanding equipment for pile foundation engineering, and its structural design is intended to improve the drilling efficiency and reduce the construction noise at the same time.

[0044] The specific structure includes a drill barrel 1, a drill rod 2, a spiral drill cutter 3, a power piece 4 and a cutting tooth assembly. The drill barrel 1 is semi-cylindrical and is provided with a top plate, a side wall and a bottom plate. The side wall of the drill barrel 1 is an arc plate structure. The top plate of the drill barrel 1 is provided with a soil discharge hole 20 for discharging the soil generated during the drilling process; the bottom plate of the drill barrel 1 is provided with a soil entry hole 21 for facilitating the soil to enter the inside of the drill barrel 1. The drill rod 2 is rotatably connected to the inside of the drill barrel 1. The spiral drill cutter 3 is fixedly connected to the peripheral side of the drill rod 2. The lower edge of the spiral drill cutter 3 and the lower end of the drill rod 2 are provided with a plurality of drill teeth 19 for preliminary crushing of the soil. The design of the spiral drill cutter 3 can not only effectively cut the soil, but also transport the soil upward through the spiral structure so that it can be discharged from the soil discharge hole 20. A power piece 4 is installed on the top of the drill barrel 1. In this embodiment, a hydraulic motor is used as the power piece 4. The hydraulic motor is connected to the drill rod 2 in a transmission manner, and can provide stable rotational power for the drill rod 2, drive the drill rod 2 to rotate, and thus drive the spiral drill cutter 3 to perform drilling and expanding operations. A connecting plate 22 is also fixedly connected to the upper end of the drill tube 1, which is used to connect other control devices, such as excavators, cranes, construction trolleys, etc., to drive the drilling and expanding equipment of the present invention to rise and fall and change positions. In order to further improve the drilling efficiency and expanding effect, a cutting tooth mechanism is installed on the edge of the side wall of the drill tube 1.

[0045] There are two cutting tooth mechanisms, which are respectively arranged at the two edges of the side wall of the drill tube 1. The cutting tooth mechanism includes a fixed tooth assembly 5, a sliding tooth assembly 7 and a driving assembly arranged in a one-to-one correspondence. Among them, the fixed tooth assembly 5 is arranged in the vertical direction and fixedly connected to the edge of the side wall of the drill tube 1. The fixed tooth assembly 5 is provided with a plurality of first teeth 6, which are arranged in an array in the vertical direction. The first teeth 6 protrude from the edge of the side wall of the drill tube 1 and are used to cut the soil. The sliding tooth assembly 7 is also arranged in the vertical direction and slidably connected to the edge of the side wall of the drill tube 1. The sliding tooth assembly 7 is arranged on the side of the fixed tooth assembly 5 away from the drill rod 2. The sliding tooth assembly 7 is provided with a plurality of second teeth 8, which are arranged in an array in the vertical direction. The second teeth 8 also protrude from the edge of the side wall of the drill tube 1 and are used to cut the soil. It should be noted that the first teeth 6 and the second teeth 8 are both arranged in the tangent direction of the edge of the side wall of the drill tube 1 and face away from the side wall of the drill tube 1.

[0046] Reference Figure 3-4, a plurality of first sliding chambers 9 are arranged at intervals along the vertical direction inside the sliding tooth assembly 7, and a sliding block 10 is connected to each first sliding chamber 9 in a sliding manner in the horizontal direction. A first inclined surface 11 is arranged on the side wall of the sliding block 10 close to the drill rod 2, and the first inclined surface 11 is inclined from top to bottom in a direction away from the drill rod 2. A plurality of second sliding chambers 12 are arranged at intervals along the vertical direction inside the fixed tooth assembly 5, and the second sliding chambers 12 are connected to the first sliding chambers 9 in a one-to-one correspondence. A second inclined surface 13 is arranged in the second sliding chamber 12, and the second inclined surface 13 is adapted to the first inclined surface 11, and the two realize relative movement through sliding connection. When the second inclined surface 13 slides upward along the first inclined surface 11, it can drive the sliding tooth assembly 7 to move upward relative to the fixed tooth assembly 5; conversely, when the second inclined surface 13 slides downward along the first inclined surface 11, it can drive the sliding tooth assembly 7 to move downward relative to the fixed tooth assembly 5. Through this operation mode, the effect of multiple first teeth 6 and multiple second teeth 8 interlacedly cutting the soil can be achieved.

[0047] The driving assembly is used to drive the sliding tooth assembly 7 to slide relative to each other. In the present embodiment, the driving assembly is a plurality of second magnets 15 fixedly connected to the edge of the spiral drill cutter 3, and the second magnets 15 are distributed in a strip-shaped spiral shape. A first magnet 14 is arranged on the upper end of the sliding block 10 near the drill rod 2, and the first magnet 14 and the second magnet 15 are arranged opposite to each other and can attract each other. In order to reduce the interference caused by the mutual attraction between the first magnet 14 and the second magnet 15, the structures such as the drill barrel 1, the drill rod 2 and the spiral drill cutter 3 in the present invention are made of alloy material, and non-magnetic materials are selected.

[0048] When the hydraulic motor drives the drill rod 2 to rotate, the spiral drill cutter 3 rotates accordingly, and the second magnet 15 interacts with the first magnet 14 to attract the sliding block 10 to slide upward along the second inclined surface 13, thereby driving the sliding tooth assembly 7 to slide relative to the fixed tooth assembly 5 to achieve the hole expansion function.

[0049] The cutting tooth mechanism of the present invention also includes a reset assembly. When the driving force of the driving assembly decreases, the reset assembly can overcome the driving force of the driving assembly and drive the sliding block 10 to slide downward along the second inclined surface 13, so that the sliding tooth assembly 7 returns to the initial position.

[0050] The sliding block 10 can be embedded in the first sliding cavity 9 and the second sliding cavity 12 at the same time. The reset assembly includes a fixed sleeve 16, a sliding sleeve 17 and an elastic member 18. Among them, the fixed sleeve 16 is embedded above the top plate of the second sliding cavity 12. The sliding sleeve 17 is slidably connected in the fixed sleeve 16 along the vertical direction, and the lower end of the sliding sleeve 17 is slidably connected to the top of the sliding block 10. The elastic member 18 is embedded in the fixed sleeve 16 and the sliding sleeve 17, and the two ends of the elastic member 18 are respectively connected to the fixed sleeve 16 and the sliding sleeve 17. The elastic member 18 is preferably a compression spring, which is in a compressed state during normal operation. When the sliding tooth assembly rises to the highest height, as the spiral drill 3 rotates, the second magnet 15 and the first magnet 14 move away from each other, and the driving force of the driving assembly gradually decreases, the elastic member 18 releases elastic potential energy, drives the sliding sleeve 17 to slide downward, thereby driving the sliding block 10 to slide downward along the second inclined surface 13 to achieve the reset function.

[0051] Working principle of the present invention:

[0052] Reference Figure 5 This is a construction flow chart of drilling and hole enlarging of the present invention, and the drilling sequence is carried out from left to right.

[0053] First, the spiral drill rig drives a spiral drill cutter 3 with a small diameter to drill a hole at the center point of the pile foundation to form an initial pile hole 100, ensuring that the diameter of the spiral drill cutter 3 is slightly larger than the diameter of the drill barrel 1 of the drilling and expanding device of the present invention.

[0054] Secondly, the drilling and expanding device of the present invention is assembled into the pile hole by using a crane, and the connecting plate 22 is fixed on a mechanical device such as a trolley or an excavator to perform the expanding operation.

[0055] In the hole enlargement operation of the pile foundation project, the hydraulic motor is started to drive the drill rod 2 to rotate, and the spiral drill cutter 3 rotates accordingly. The hole enlargement operation is performed on the basis of the initial pile hole 100 to the circumferential side, and the groove on the side wall of the drill tube 1 is ensured to be oriented in the hole enlargement direction 200, so as to perform preliminary crushing and cutting of the soil. The hole enlargement direction 200 refers to Figure 5 In the direction of the arrow, after a single hole expansion is completed, it returns to the initial pile hole 100, and after changing the direction, the hole expansion operation is carried out in other directions until multiple hole expansion areas are formed.

[0056] During the reaming process, a closed area is formed between the drill tube 1 and the uncut soil, which reduces the risk of the cut soil coming off the spiral drill cutter 3 under the centrifugal effect. The spiral drill cutter 3 cuts the soil, and the cut soil is discharged from the soil discharge hole 20 through the spiral drill cutter 3; while the soil is dragged off the spiral drill cutter 3, the second magnet 15 on the edge of the spiral drill cutter 3 and the first magnet 14 on the sliding block 10 attract each other, driving the sliding tooth assembly 7 to slide relative to the fixed tooth assembly 5, and then the second magnet 15 and the first magnet 14 move away from each other, and the elastic member 18 in the reset assembly plays a role, driving the sliding block 10 to slide downward along the second inclined surface 13, and the sliding tooth assembly 7 returns to the initial position, thereby achieving the effect of cutting the soil at the edge of the drill tube 1. When the reaming operation is completed, the drilling and reaming device of the present invention is lifted up when the hydraulic motor stops working.

[0057] Finally, the large-diameter spiral drill 3 matched with the terminal pile hole 300 is replaced, and a hole is drilled at the center point of the pile foundation to form the terminal pile hole 300.

[0058] The present invention arranges a semi-cylindrical drill tube 1 on the circumferential side of the spiral drill cutter 3. During the hole expansion process, a closed area is formed between the drill tube 1 and the uncut soil, thereby reducing the risk of soil falling out under the action of centrifuge and reducing the phenomenon of soil accumulation at the bottom of the pile hole, ensuring that the cut soil can be smoothly discharged through the spiral drill cutter 3, and further improving the soil discharge efficiency.

[0059] The present invention drives the sliding tooth assembly 7 to realize the hole expansion function by cooperating with the first magnet 14 and the second magnet 15, thereby improving the soil cutting efficiency.

[0060] The equipment of the present invention can adapt to the construction requirements of pile foundations of different diameters. By replacing the spiral drill cutters 3 of different specifications, pile hole construction from small diameter to large diameter can be realized, which reduces construction noise and noise damage to construction workers and surrounding residents. At the same time, the optimized soil discharge mechanism reduces the risk of equipment jamming caused by soil accumulation, and improves the safety and stability of the construction process.

[0061] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A low-noise drilling and expanding equipment for pile foundation engineering, characterized in that: include: A semi-cylindrical drill tube (1); A drill rod (2) is rotatably connected to the drill tube (1), and a spiral drill cutter (3) is fixedly connected to the circumference of the drill rod (2); a power member (4) installed at the top of the drill tube (1), the power member (4) being used to drive the drill rod (2) to rotate; and A cutting tooth mechanism is installed on the edge of the side wall of the drill tube (1), and the cutting tooth mechanism is used for cutting soil.

2. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 1 is characterized in that: The cutting tooth mechanism comprises: A fixed tooth assembly (5) arranged in a vertical direction and fixedly connected to the edge of the side wall of the drill tube (1), wherein the fixed tooth assembly (5) is provided with a plurality of first teeth (6) protruding from the edge of the side wall of the drill tube (1) and used for cutting soil; a sliding tooth assembly (7) arranged in a vertical direction and slidably connected to the edge of the side wall of the drill tube (1); the sliding tooth assembly (7) is arranged on a side of the fixed tooth assembly (5) away from the drill rod (2); the sliding tooth assembly (7) is provided with a plurality of second teeth (8) protruding from the edge of the side wall of the drill tube (1) and used for cutting soil; and A driving component is provided relative to the fixed tooth component (5) and is used for driving the sliding tooth component (7) to slide relative to the fixed tooth component (5).

3. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 2 is characterized in that: The sliding tooth assembly (7) comprises: a plurality of first sliding cavities (9) arranged in a vertical direction at intervals within the sliding tooth assembly (7); and A sliding block (10) is slidably connected in the first sliding cavity (9) in a one-to-one correspondence along the horizontal direction, and a first inclined surface (11) is provided on the side wall of the sliding block (10) close to the drill rod (2), and the first inclined surface (11) is inclined from top to bottom in a direction away from the drill rod (2); The fixed tooth assembly (5) comprises: A plurality of second sliding cavities (12) are arranged in the sliding tooth assembly (7) at intervals along the vertical direction, the second sliding cavities (12) are connected to the first sliding cavities (9) in a one-to-one correspondence, a second inclined surface (13) adapted to the first inclined surface (11) is arranged in the second sliding cavity (12), and the first inclined surface (11) is slidably connected to the second inclined surface (13); The driving assembly is used to drive the sliding block (10) to slide upward along the second inclined surface (13).

4. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 3 is characterized in that: The cutting tooth mechanism also includes a reset component. When the driving force of the driving component decreases, the reset component can overcome the driving force of the driving component and drive the sliding block (10) to slide downward along the second inclined surface (13).

5. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 4 is characterized in that: A first magnet (14) is arranged on one side of the upper end of the sliding block (10) close to the drill rod (2); the driving component is a plurality of second magnets (15) fixedly connected to the edge of the spiral drill (3) and in the shape of a strip spiral; the plurality of second magnets (15) and the plurality of first magnets (14) are arranged one by one opposite to each other and can attract each other.

6. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 5 is characterized in that: The sliding block (10) is embedded in both the first sliding cavity (9) and the second sliding cavity (12).

7. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 6 is characterized in that: The reset component comprises: A fixed sleeve (16) embedded above the top plate of the second sliding cavity (12); a sliding sleeve (17) slidably connected in the fixed sleeve (16) along a vertical direction, wherein the lower end of the sliding sleeve (17) is slidably connected to the top end of the sliding block (10); and An elastic member (18) is embedded in the fixed sleeve (16) and the sliding sleeve (17), and two ends of the elastic member (18) are respectively connected to the fixed sleeve (16) and the sliding sleeve (17), and the elastic member (18) is used to drive the sliding sleeve (17) to slide downward.

8. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 1 is characterized in that: The lower edge of the spiral drill cutter (3) and the lower end side wall of the drill rod (2) are both provided with drill teeth (19).

9. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 1, characterized in that: The top plate of the drill tube (1) is provided with a soil discharge hole (20), and the bottom plate of the drill tube (1) is provided with a soil intake hole (21).

10. The low-noise drilling and expanding equipment for pile foundation engineering according to claim 1, characterized in that: The power component (4) is a hydraulic motor, which is transmission-connected to the drill rod (2); a connecting plate (22) is fixedly connected to the upper end of the drill tube (1).

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