Cast-in-place pile hole forming device for collapsible loess

Abstract

The utility model relates to the technical field of cast-in-place pile hole forming, and discloses a collapsible loess cast-in-place pile hole forming device which comprises a supporting base, a side edge operation opening is formed in the middle of the side edge of the supporting base, two slopes are symmetrically arranged on the two sides of the side edge operation opening, wheels are installed on the periphery of the bottom end of the supporting base, and the wheels are arranged on the side edge operation opening. A hole forming operation assembly is arranged at the top end of the supporting base, the hole forming operation assembly is arranged on the supporting base, a servo motor in the hole forming operation assembly can drive a drill rod and a spiral blade to rotate through a transmission connecting block, holes are drilled in the ground through a drill tip and a blade, and soil is prevented from being accumulated at a punching opening; the driving motor can control the drill rod to move up and down, so that straight punching operation is more facilitated, the condition that the hole is inclined after being formed is avoided, and the device is simple in overall structure, light in weight, capable of adapting to drilling operation of a user for a small cast-in-place pile hole and more suitable for collapsible loess.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bored pile hole forming technology, specifically to a device for collapsible loess bored pile hole forming. BACKGROUND

[0002] Collapsible loess refers to the soil that has significant additional deformation due to the destruction of soil structure after immersion under the action of overburden stress or the combined action of overburden stress and additional stress. The soil is relatively uniform in quality, loose in structure, and well-developed in pore. When not wetted by water, it generally has high strength and low compressibility. When wetted by water under certain pressure, the soil structure will be quickly destroyed, resulting in large additional subsidence and rapid reduction in strength. The device for collapsible loess bored pile hole forming is a common ground treatment method. It involves driving a precast or cast-in-place pile into the ground to transfer the load of the upper structure and improve the properties of the surrounding soil.

[0003] After searching, a device for collapsible loess bored pile hole forming is authorized by the Chinese patent with the public number CN 220929275 U. It includes a support frame, a guide rail is arranged inside the support frame, a sliding block is connected in the guide rail, a moving plate is connected between the sliding blocks, a drill head assembly is connected to the lower end of the moving plate, the drill head assembly includes a first drill head, a second drill head, a third drill head, and a rotating rod. The movement of the moving plate in the support frame is achieved by the sliding of the sliding block in the guide rail, so that the position of the drill head assembly can be adjusted, facilitating the up and down movement of the drill head assembly. The first drill head can compact the inner wall of the hole, the spiral blocks on the outer surface of the second drill head can further break the soil, and the soil extruded by the third drill head can be transported upwards, so that the first drill head can compact the extruded soil against the hole wall. The third drill head is provided with multiple U-shaped grooves at the bottom end. Since its contact surface is larger, the U-shaped grooves can enter the soil more quickly compared to the drill head without grooves.

[0004] The hole forming device in the above patent still has some shortcomings. Since the size of the bored pile varies, the size of the required hole also varies. Traditional hole drilling machines are mostly large in size and heavy in weight, making it difficult to operate on collapsible loess. For small holes, although hand-held drill heads can be used for drilling, the hand-held drilling operation has poor stability, often resulting in hole skewing, which is not conducive to subsequent concrete pouring and molding, and has significant defects. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of for collapsible loess ground bored pile hole-forming device, solve since the size of bored pile is not one, the size required to punch is also different, and traditional punching machine, most bulky, heavy, it is difficult to operate on collapsible loess ground, and for the operation of small hole, although it can use hand-held drill to punch, but hand-held drilling operation has the problem of poor stability, frequently there is the condition of hole skew, it is not conducive to subsequent concrete pouring forming, use there is the problem of greater defect.

[0006] The utility model provides following technical scheme: a kind of for collapsible loess ground bored pile hole-forming device, including support base, the middle part of the side edge of support base is equipped with side edge operation opening, two slopes are symmetrically equipped with in the two sides of side edge operation opening, the periphery of the bottom end of support base is equipped with wheel, the top of support base is provided with hole-forming operation subassembly, two counterweights are symmetrically provided on support base, retaining plate is arranged on support base, the side edge of support base is fixed with pull ring;

[0007] The hole-forming operation subassembly includes lifting connecting plate vertically arranged in the top of the support base, lifting recess is equipped in the side edge of the lifting connecting plate, lifting screw rod is rotatably arranged in the lifting recess, the top of the lifting connecting plate is provided with drive motor, the drive shaft of drive motor is fixedly connected with the top of the lifting screw rod, lifting screw sleeve is sleeved on the lifting screw rod, the side edge of the lifting screw sleeve is fixed with side edge mounting plate, two limit through holes are symmetrically equipped in the two sides of the side edge mounting plate, two limit insertion rods are symmetrically arranged in the side edge of the lifting connecting plate, the middle part of the limit through hole is penetrated by the limit insertion rod, servo motor is installed on the side edge mounting plate, the drive shaft of servo motor is fixed with transmission connecting block, the side edge of transmission connecting block is rotatably penetrated through the side edge of the side edge mounting plate, the bottom end of transmission connecting block is fixed with drive connecting column, drill rod is provided on the bottom of drive connecting column.

[0008] Preferred technical solution one: the top of the drill rod is screwed into the bottom of the drive connecting column, and the drill rod is provided with helical blades.

[0009] Preferred technical solution two: the bottom end of the drill rod is fixed with drill tip, and the drill tip is uniformly provided with a plurality of blades.

[0010] Preferred technical solution three: the slope is downwardly inclined.

[0011] The present scheme can make the soil drilled by the helical blades be discharged along the inclination of the slope.

[0012] Preferred technical solution four: the side edge mounting plate is composed of horizontal plate and vertical plate perpendicularly.

[0013] The scheme can make the connection between the side mounting plate and the lifting screw sleeve more convenient.

[0014] Preferred technical scheme five: the blades are uniformly provided with a plurality of blades, and the plurality of blades are inclinedly arranged on the inclined surface of the drill tip.

[0015] The scheme can make the drill tip cooperate with the blade to better drill the ground.

[0016] Compared with the prior art, the utility model provides a kind of for collapsible loess hole forming device for cast-in-place pile, with following beneficial effects:

[0017] (1) the utility model discloses a hole forming operation assembly is arranged on support base, wherein servo motor in hole forming operation assembly can drive drill rod and helical blade to rotate by transmission connecting block, and the ground is drilled by drill tip and blade, and helical blade lifts and pulls soil in the drilling process to ground, and soil on the surface of slope will be discharged along the inclined surface of slope, to avoid soil accumulation in the hole, and driving motor can control the up and down movement of drill rod, more beneficial to straight drilling operation, without the condition of skew after hole forming, and the whole device structure is simple, and the quality is lighter, can adapt to the drilling operation of user to small cast-in-place pile hole, more suitable for collapsible loess. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 it is structure three-dimensional schematic view of the utility model;

[0019] Figure 2 it is structure exploded schematic view of the utility model;

[0020] Figure 3 it is structure of the utility model Figure 2 of drill tip structure enlarged view;

[0021] Figure 4 it is structure side view schematic view of the utility model.

[0022] In the drawing: 1, support base;2, side operation port;3, slope;4, wheel;5, hole forming operation assembly;6, counterweight;7, soil retaining plate;8, pull ring;

[0023] 501, lifting connecting plate;502, lifting recess;503, lifting screw;504, driving motor;505, lifting screw sleeve;506, side mounting plate;507, limiting perforation;508, limiting insertion rod;509, servo motor;510, transmission connecting block;511, driving connecting column;512, drill rod;513, helical blade;514, drill tip;515, blade. DETAILED DESCRIPTION

[0024] Please refer to Figures 1-4 ,

[0025] Embodiment one: a kind of collapsible loess pile hole-forming device, including support base 1, the middle part of side edge of support base 1 is equipped with side edge operation opening 2, two inclined slopes 3 are symmetrically equipped in the two sides of side edge operation opening 2, wheel 4 is installed around the bottom end of support base 1, hole-forming operation assembly 5 is provided at the top end of support base 1, two counterweights 6 are symmetrically provided on support base 1, soil baffle 7 is provided on support base 1, pull ring 8 is fixed on the side edge of support base 1.

[0026] Hole-forming operation assembly 5 includes lifting connecting plate 501 vertically arranged in the top end of support base 1, lifting recess 502 is equipped in the side edge of lifting connecting plate 501, lifting screw 503 is rotatably arranged in lifting recess 502, drive motor 504 is provided at the top end of lifting connecting plate 501, the driving shaft of drive motor 504 is fixedly connected with the top end of lifting screw 503, lifting screw sleeve 505 is sleeved on lifting screw 503, side edge mounting plate 506 is fixed on the side edge of lifting screw sleeve 505, two limiting perforations 507 are symmetrically equipped in the two sides of side edge mounting plate 506, two limiting insertion rods 508 are symmetrically arranged in the side edge of lifting connecting plate 501.

[0027] The middle part of limiting insertion rod 508 is inserted into limiting perforation 507, servo motor 509 is installed on side edge mounting plate 506, drive connection block 510 is fixed on the driving shaft of servo motor 509, drive connection block 510 is rotatably inserted into the side edge of side edge mounting plate 506, drive connection column 511 is fixed on the bottom end of drive connection block 510, drill rod 512 is provided on the bottom of drive connection column 511, drill rod 512 is screwed into the bottom of drive connection column 511, spiral blade 513 is provided on drill rod 512, drill tip 514 is fixed on the bottom end of drill rod 512, a plurality of blades 515 are evenly arranged on drill tip 514.

[0028] Embodiment two: the difference between this embodiment and embodiment one is that, inclined slope 3 is downwardly inclined.

[0029] So that the soil drilled and pulled up by spiral blade 513 can be discharged along the inclined shape of inclined slope 3.

[0030] Embodiment three: the difference between this embodiment and embodiment one is that, side edge mounting plate 506 is vertically composed of horizontal plate and vertical plate.

[0031] So that the connection between side edge mounting plate 506 and lifting screw sleeve 505 is more convenient.

[0032] Embodiment four: the difference between this embodiment and embodiment one is that, wherein the blades 515 are uniformly provided with a plurality of, a plurality of blades 515 are inclined to be provided on the inclined surface of the drill tip 514.

[0033] The drill tip 514 cooperates with the blade 515 to better drill the hole.

[0034] In this embodiment, because the size of the cast-in-place pile is different, the size of the required drilling is also different, and the traditional drilling machine is mostly large in size and heavy in quality, which is difficult to operate on the collapsible loess land. For small hole operation, although a hand-held drill can be used for drilling, the hand-held drilling operation has poor stability and often appears to be skewed. It is not conducive to the subsequent formation of the cast-in-place pile, and there are many defects in use.

[0035] In summary, in specific implementation, by providing the hole forming operation assembly 5 on the supporting base 1, when the user needs to drill a cast-in-place pile on the collapsible loess land, the user can use a lighter machine to tie the device to the pulling ring 8 through a rope, and then pull the device to the drilling position. Because the overall quality of the device is lighter, it is more flexible to move and can adapt to the drilling operation of the small hole of the cast-in-place pile.

[0036] When the device moves to the drilling position, the driving motor 504 and the servo motor 509 are powered on. After the servo motor 509 is powered on, it drives the driving connection column 511 to rotate through the transmission connecting block 510. The driving connection column 511 is connected to the drill rod 512 through threads, so that the drill rod 512 is more convenient to disassemble and assemble. The screw blade 513 and the drill tip 514 are driven to rotate by the drill rod 512.

[0037] After the driving motor 504 is started, the lifting screw rod 503 is driven to rotate. The lifting screw sleeve 505 is sleeved on the lifting screw rod 503. The side of the lifting screw sleeve 505 is connected to the side mounting plate 506. The limiting hole 507 opened on the side mounting plate 506 is penetrated by the limiting plug rod 508, which limits the lifting screw sleeve 505. The lifting screw sleeve 505 can only move on the lifting screw rod 503. When the drill rod 512 and the screw blade 513 rotate, the lifting screw sleeve 505 drives the drill rod 512 and the screw blade 513 to move downward through the side mounting plate 506, so that the specified position of the loess land surface can be drilled. The soil produced by drilling is brought out to the ground by the rotation of the screw blade 513 and falls into the slope 3, and then is discharged through the inclined surface of the slope 3 to avoid soil accumulation at the drilling hole. The blades 515 provided on the drill tip 514 can speed up the drilling progress and improve the drilling efficiency of the device. The device can drill straight and stably without skewing, which is more conducive to the subsequent formation of the cast-in-place pile and facilitates the use of the user.

Claims

1. A collapsible loess ground pile hole forming device comprising a supporting base (1), characterized in that: The middle part of the side edge of the support base (1) is provided with a side edge operation opening (2), two slopes (3) are symmetrically arranged on the two sides of the side edge operation opening (2), wheels (4) are arranged around the bottom end of the support base (1), a hole forming operation assembly (5) is arranged at the top end of the support base (1), two counterweights (6) are symmetrically arranged on the support base (1), an earth retaining plate (7) is arranged on the support base (1), and a pulling ring (8) is fixed to the side edge of the support base (1); The hole forming operation assembly (5) comprises a lifting connecting plate (501) vertically arranged at the top end of the support base (1), a lifting groove (502) is formed in the side edge of the lifting connecting plate (501), a lifting screw (503) is rotatably arranged in the lifting groove (502), a driving motor (504) is arranged at the top end of the lifting connecting plate (501), the driving shaft of the driving motor (504) is fixedly connected with the top end of the lifting screw (503), a lifting screw sleeve (505) is sleeved on the lifting screw (503), a side edge mounting plate (506) is fixedly arranged on the side edge of the lifting screw sleeve (505), two limiting through holes (507) are symmetrically formed on the two sides of the side edge mounting plate (506), two limiting insertion rods (508) are symmetrically arranged on the side edge of the lifting connecting plate (501), the limiting insertion rods (508) penetrate the middle part of the limiting through holes (507), a servo motor (509) is arranged on the side edge mounting plate (506), a transmission connecting block (510) is fixedly arranged on the driving shaft of the servo motor (509), the transmission connecting block (510) is rotatably penetrated through the side edge of the side edge mounting plate (506), a driving connecting column (511) is fixedly arranged at the bottom end of the transmission connecting block (510), and a drill rod (512) is arranged at the bottom of the driving connecting column (511).

2. The hole-forming device for cast-in-place pile in collapsible loess ground according to claim 1, characterized in that: The top end of the drill rod (512) is threadedly inserted into the bottom of the driving connecting column (511), and a spiral blade (513) is arranged on the drill rod (512).

3. The hole-forming device for cast-in-place pile in collapsible loess ground according to claim 2, characterized in that: The bottom end of the drill rod (512) is fixedly provided with a drill tip (514), and a plurality of blades (515) are uniformly arranged on the drill tip (514).

4. The hole-forming device for cast-in-place pile in collapsible loess ground according to claim 3, characterized in that: The slope (3) is downwardly inclined.

5. The hole-forming device for cast-in-place pile in collapsible loess ground according to claim 4, characterized in that: The side edge mounting plate (506) is composed of a horizontal plate and a vertical plate.

6. The hole-forming device for cast-in-place pile in collapsible loess ground according to claim 5, characterized in that: The blades (515) are uniformly arranged on the inclined surface of the drill tip (514).

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