A construction engineering foundation pile detection device

Abstract

The application relates to the related art, and discloses a building engineering foundation pile detection device, a top plate is driven to move up and down along a sliding groove through a sampling mechanism, the lower surface of the top plate is provided with a sampling motor, equiangular adjusting grooves are formed in a rotating disc, drill rods are arranged in the adjusting grooves, the width of the sample can be freely controlled by controlling the adjusting distance of the drill rods, and in the process of first drilling, the steel teeth on the outer cylinder can form uneven connecting surfaces on the inner wall of the first drilling, the position of the steel teeth is adjusted while the position of the drill rods is adjusted, so that uneven connecting surfaces can be formed on the inner wall of the second drilling in the second drilling, and the recast concrete can be well combined with the original foundation pile during recasting, the original foundation pile is cylindrically sampled, the recast concrete can be well combined with the original foundation pile, and the influence of the core drilling method on the original foundation pile can be reduced.

Description

Technical Field

[0001] This invention relates to the field of building engineering related technologies, and in particular to a building foundation pile testing device. Background Technology

[0002] Construction engineering refers to the engineering entity formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. "Buildings" refer to projects with roofs, beams, columns, walls, foundations, and internal spaces that meet people's needs for production, residence, study, and public activities. During building construction, to ensure the stability of the building, foundation piles must be constructed first. A deep foundation consisting of piles and pile caps connecting the pile tops, or a single pile foundation consisting of columns connected to the piles, is simply called a foundation pile. If the entire pile body is buried in the soil and the bottom of the pile cap is in contact with the soil, it is called a low-pile-cap pile. If the upper part of the pile body is exposed above the ground and the bottom of the pile cap is above the ground, it is called a high-pile-cap pile. Foundation piles, typically low-cap pile foundations, are widely used in high-rise buildings. After the foundation piles are poured and cooled, their various properties need to be tested. Current technologies commonly employ static load tests, core drilling, low-strain methods, high-strain methods, and sonic logging. Core drilling is a common testing method. However, this method requires drilling a hole in the foundation pile and then taking a sample for testing. This leaves a large borehole in the pile, and during backfilling, the smooth sidewalls of the borehole prevent proper bonding between the backfilled concrete and the original foundation pile, leading to a decline in the overall performance of the foundation pile. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a foundation pile testing device for building engineering in order to overcome the problems mentioned above.

[0004] The technical problem solved by this invention is achieved through the following technical solution:

[0005] A foundation pile testing device for building engineering includes a base and a mounting frame mounted on the base. The base has a sampling hole in its center. The mounting frame has a sliding groove on its side wall. A top plate slides within the sliding groove. The top plate moves up and down along the sliding groove via a sampling mechanism. A sampling motor is mounted on the lower surface of the top plate. A turntable is mounted at the output end of the sampling motor. Adjustment grooves are formed at equal angles on the turntable. A drill rod is mounted within the adjustment groove. A sampling blade is mounted at the lower end of the drill rod. A cutting mechanism is provided between the drill rod and the sampling blade. An adjustment mechanism for adjusting the position of the drill rod is provided within the adjustment groove. The adjustment distance of the drill rod is equal to the width to be sampled.

[0006] Preferably, the adjusting mechanism includes an adjusting screw disposed in the adjusting groove, the adjusting screw being threadedly connected to the upper end of the drill rod, and the end of the adjusting screw being provided with a nut.

[0007] Preferably, the adjustment distance of the drill rod is controlled by a ranging mechanism, which includes a ranging plate disposed at the upper end of the drill rod and an infrared rangefinder disposed on the upper surface of the turntable corresponding to the ranging plate. The four infrared rangefinders are positioned at the same distance from the center of the turntable.

[0008] Preferably, the power supply to the sampling motor can only be turned on when the distance between the four sets of infrared rangefinders and the ranging plate is the same.

[0009] Preferably, the sampling mechanism includes a sampling screw mounted on a mounting frame, the sampling screw being threadedly connected to the top plate, and the two sampling screws rotating synchronously through a synchronization mechanism.

[0010] Preferably, the synchronization mechanism includes sprockets and chains. There are four sprockets, two of which are located at the lower end of the sampling screw, and the other two are rotatably mounted on the lower surface of the base. A chain is provided between the four sprockets, and the sprockets are driven by an external drive mechanism.

[0011] Preferably, the cutting mechanism includes a rotating shaft for connecting the drill rod and the sampling knife. The drill rod and the sampling knife are rotatably connected by the rotating shaft. A cylinder is provided inside the lower end of the drill rod at a position corresponding to the upper end of the sampling knife. The extended end of the cylinder is rotatably connected to the end of the sampling knife. The cylinder is controlled by an external power source through an overcurrent slip ring.

[0012] Preferably, the outer wall of the drill rod is provided with an installation groove, and an outer cylinder is rotatably connected in the installation groove. The outer wall of the outer cylinder is continuously provided with steel teeth, the coverage area of ​​the steel teeth is half of the side area of ​​the outer cylinder, and the tooth direction of the steel teeth is randomly set.

[0013] Preferably, the outer cylinder has a set of pin holes symmetrically arranged on its side wall, and a pin is provided in the pin hole. The outer cylinder and the drill rod can be connected together by the pin. After the pin is installed in place, the end of the pin does not extend beyond the outer side wall of the outer cylinder.

[0014] Preferably, the side wall of the top plate is provided with a marking plate, and the side wall of the mounting bracket is provided with scale lines.

[0015] The advantages and positive effects of this invention are as follows: During core sampling, the sampling motor drives the turntable to rotate, which in turn drives the drill rod and sampling cutter to rotate. The sampling mechanism moves the sampling cutter downwards, thus drilling a cylindrical space in the pile. The sampling cutter is then removed, the drill rod position is adjusted, and a second drilling is performed, creating another cylindrical space in the pile. A cylindrical sample is formed between the two cylindrical spaces, allowing a cylindrical sample to be extracted from the pile. This avoids leaving large boreholes in the pile. The drilling rod is controlled... The adjustable distance allows for free control of the required sampling width. During the first drilling process, the steel teeth on the outer cylinder create an uneven connecting surface on the inner wall of the first borehole. By adjusting the position of the drill rod and simultaneously adjusting the position of the steel teeth, an uneven connecting surface can be created on the inner wall of the second borehole. This allows the backfilled concrete to bond well with the original piles. By sampling the piles in a cylindrical shape, the backfilled concrete can bond well with the original piles, thus reducing the impact of core drilling on the original piles. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the bottom structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the drill pipe;

[0020] Figure 4 This is a structural diagram of the outer cylinder and steel teeth;

[0021] The markings in the attached diagram are described below:

[0022] 1. Base; 2. Mounting bracket; 3. Top plate; 4. Sampling motor; 5. Adjustment groove; 6. Drill rod; 7. Turntable; 8. Infrared rangefinder; 9. Rangefinder plate; 10. Adjustment screw; 11. Nut; 12. Marking plate; 13. Scale line; 14. Sampling hole; 15. Sampling knife; 16. Sprocket; 17. Chain; 18. Sampling screw; 19. Cylinder; 20. Shaft; 21. Mounting groove; 22. Outer cylinder; 23. Steel tooth; 24. Pin. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0024] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0025] Reference Figures 1 to 4 As shown, the present invention discloses a foundation pile testing device for building engineering, comprising a base 1 and a mounting frame 2 mounted on the base 1. A sampling hole 14 is provided in the middle of the base 1. A sliding groove is provided on the side wall of the mounting frame 2, and a top plate 3 is slidably mounted within the sliding groove. The top plate 3 is driven by a sampling mechanism to move up and down along the sliding groove. A sampling motor 4 is provided on the lower surface of the top plate 3, and a turntable 7 is provided at the output end of the sampling motor 4. Adjustment grooves 5 are formed at equal angles on the turntable 7. A drill rod 6 is provided within the adjustment grooves 5, and a sampling blade 15 is provided at the lower end of the drill rod 6. A cutting mechanism is provided between the drill rod 6 and the sampling blade 15. The adjustment grooves 5 are equipped with mechanisms for adjusting the drill rod 6. The position adjustment mechanism allows the drill rod 6 to be adjusted at a distance equal to the required sampling width. The outer wall of the drill rod 6 has an installation groove 21, within which an outer cylinder 22 is rotatably connected. The outer wall of the outer cylinder 22 is continuously provided with steel teeth 23, the coverage area of ​​which is half the side area of ​​the outer cylinder 22. The tooth direction of the steel teeth 23 is randomly arranged. A set of pin holes are symmetrically arranged on the side wall of the outer cylinder 22, with pins 24 inserted into each hole. The outer cylinder 22 and drill rod 6 can be connected via the pins 24. After the pins 24 are installed, their ends do not extend beyond the outer wall of the outer cylinder 22. During core sampling, the sampling motor 4... The rotating disc 7 can rotate, which in turn rotates the drill rod 6 and the sampling blade 15. The sampling mechanism moves the sampling blade 15 downwards, drilling a cylindrical space in the pile. The sampling blade 15 is then removed, and the position of the drill rod 6 is adjusted for secondary drilling, creating another cylindrical space in the pile. A cylindrical sample is formed between these two spaces, allowing for the extraction of a cylindrical sample from the pile. This avoids leaving large boreholes in the pile. The adjustment distance of the drill rod 6 allows for free control of the drilling process. The required sampling width, and during the first drilling process, the steel teeth 23 on the outer cylinder 22 can form an uneven connecting surface on the inner wall of the first drilled hole. While adjusting the position of the drill rod 6, the position of the steel teeth 23 is also adjusted, so that an uneven connecting surface can be formed on the inner wall of the second drilled hole. This allows the backfilled concrete to bond well with the original foundation pile. By sampling the foundation pile in a cylindrical shape, the backfilled concrete can bond well with the original foundation pile, thereby reducing the impact of core drilling sampling on the original foundation pile.

[0026] Furthermore, the adjustment mechanism includes an adjustment screw 10 disposed in the adjustment groove 5. The adjustment screw 10 is threadedly connected to the upper end of the drill rod 6. The end of the adjustment screw 10 is provided with a nut 11. The adjustment distance of the drill rod 6 is controlled by a ranging mechanism. The ranging mechanism includes a ranging plate 9 disposed on the upper end of the drill rod 6 and an infrared rangefinder 8 disposed on the upper surface of the turntable 7 corresponding to the ranging plate 9. The four infrared rangefinders 8 are at the same position from the center of the turntable 7. The power supply of the sampling motor 4 can be turned on when the distance between the four sets of infrared rangefinders 8 and the ranging plate 9 is the same. The rotation of the adjustment screw 10 can drive the drill rod 6 to slide along the adjustment groove 5, thereby adjusting the position of the drill rod 6. The distance adjusted by the drill rod 6 can be accurately measured by the ranging plate 9 and the infrared rangefinders 8. The power supply of the sampling motor 4 can be turned on when the distance between the four sets of infrared rangefinders 8 and the ranging plate 9 is the same, thereby ensuring that the four drill rods 6 rotate in the same circumference when drilling.

[0027] Furthermore, the sampling mechanism includes sampling screws 18 mounted on the mounting frame 2. The sampling screws 18 are threadedly connected to the top plate 3. The two sampling screws 18 rotate synchronously through a synchronization mechanism, which includes sprockets 16 and chains 17. There are four sprockets 16, two of which are located at the lower end of the sampling screws 18, and the other two are rotatably mounted on the lower surface of the base 1. A chain 17 is provided between the four sprockets 16. The sprockets 16 are driven by an external drive mechanism. The sprockets 16 and the chain 17 can drive the two sampling screws 18 to rotate synchronously. The sampling screws 18 can drive the top plate 3 to move up and down, thereby allowing the sampling blade 15 to move up and down.

[0028] Furthermore, the cutting mechanism includes a rotating shaft 20 for connecting the drill rod 6 and the sampling knife 15. The drill rod 6 and the sampling knife 15 are rotatably connected via the rotating shaft 20. A cylinder 19 is provided inside the lower end of the drill rod 6 at a position corresponding to the upper end of the sampling knife 15. The extended end of the cylinder 19 is rotatably connected to the end of the sampling knife 15. The cylinder 19 is controlled by an external power supply via an overcurrent slip ring. After the second drilling is completed, the upper end of the sampling knife 15 can be moved by the cylinder 19, thereby causing the sampling knife 15 to rotate along the rotating shaft 20. This causes the lower end of the sampling knife 15 to tilt, thereby cutting off the lower end of the cylindrical sample, thus facilitating the removal of the cylindrical sample.

[0029] Furthermore, the side wall of the top plate 3 is provided with a marking plate 12, and the side wall of the mounting bracket 2 is provided with a scale line 13. The marking plate 12 and the scale line 13 can be used to observe the sampling depth.

[0030] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this invention also fall within the scope of protection of this invention.

Claims

1. A foundation pile testing device for building engineering, comprising a base (1) and a mounting frame (2) disposed on the base (1), wherein the base (1) is provided with a sampling hole (14) in the middle, and the mounting frame (2) is provided with a sliding groove on the side wall, wherein a top plate (3) is slidably disposed in the sliding groove, characterized in that: The top plate (3) is driven by the sampling mechanism to move up and down along the slide. The lower surface of the top plate (3) is provided with a sampling motor (4). The output end of the sampling motor (4) is provided with a turntable (7). An adjustment groove (5) is opened at equal angles on the turntable (7). A drill rod (6) is provided in the adjustment groove (5). A sampling knife (15) is provided at the lower end of the drill rod (6). A cutting mechanism is provided between the drill rod (6) and the sampling knife (15). An adjustment mechanism for adjusting the position of the drill rod (6) is provided in the adjustment groove (5). The adjustment distance of the drill rod (6) is equal to the width to be sampled. The adjustment mechanism includes an adjustment screw (10) disposed in the adjustment groove (5), the adjustment screw (10) is threadedly connected to the upper end of the drill rod (6), and the end of the adjustment screw (10) is provided with a nut (11). The adjustment distance of the drill rod (6) is controlled by a ranging mechanism, which includes a ranging plate (9) set on the upper end of the drill rod (6) and an infrared rangefinder (8) set on the upper surface of the turntable (7) corresponding to the ranging plate (9). The four infrared rangefinders (8) are at the same position from the center of the turntable (7). The power supply to the sampling motor (4) can only be turned on when the distance between the four sets of infrared rangefinders (8) and the rangefinder plate (9) is the same; The outer wall of the drill rod (6) is provided with an installation groove (21), and an outer cylinder (22) is rotatably connected in the installation groove (21). The outer wall of the outer cylinder (22) is continuously provided with steel teeth (23). The coverage area of ​​the steel teeth (23) is half of the side area of ​​the outer cylinder (22), and the tooth direction of the steel teeth (23) is randomly set. The outer cylinder (22) has a set of pin holes symmetrically arranged on its side wall. The pin holes are provided with pins (24). The outer cylinder (22) and the drill rod (6) can be connected together by the pins (24). After the pins (24) are installed in place, the end of the pins (24) does not extend beyond the outer side wall of the outer cylinder (22).

2. The foundation pile testing device for building engineering according to claim 1, characterized in that: The sampling mechanism includes a sampling screw (18) mounted on the mounting frame (2), the sampling screw (18) is threadedly connected to the top plate (3), and the two sampling screws (18) rotate synchronously through a synchronization mechanism.

3. The foundation pile testing device for building engineering according to claim 2, characterized in that: The synchronization mechanism includes sprockets (16) and chains (17). There are four sprockets (16), two of which are located at the lower end of the sampling screw (18), and the other two are rotatably mounted on the lower surface of the base (1). A chain (17) is provided between the four sprockets (16). The sprockets (16) are driven by an external drive mechanism.

4. The foundation pile testing device for building engineering according to claim 1, characterized in that: The cutting mechanism includes a rotating shaft (20) for connecting the drill rod (6) and the sampling knife (15). The drill rod (6) and the sampling knife (15) are rotatably connected through the rotating shaft (20). A cylinder (19) is provided inside the lower end of the drill rod (6) at a position corresponding to the upper end of the sampling knife (15). The extended end of the cylinder (19) is rotatably connected to the end of the sampling knife (15). The cylinder (19) is controlled by an external power supply through an overcurrent slip ring.

5. The foundation pile testing device for building engineering according to claim 1, characterized in that: The top plate (3) has a marking plate (12) on its side wall, and the mounting bracket (2) has scale lines (13) on its side wall.

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