Core drilling and sampling device for pile foundation detection

Abstract

The utility model discloses a pile foundation detection core drilling sampling device which comprises a base and a base frame used for supporting the base, and the base frame comprises guide supporting structures arranged at the four corners of the base. A lifting air cylinder is fixedly installed on the base, a cylinder rod of the lifting air cylinder penetrates through the base and is fixedly connected with an installation plate, a motor is fixedly installed on the installation plate downwards through two motor supports, and an output shaft of the motor is arranged downwards and fixedly provided with a drill bit. The guide supporting structure comprises guide columns, the guide columns are provided with vertical adjusting assemblies used for driving the bracket to move in the vertical direction, the base is fixedly connected with the bracket, and connecting assemblies are further arranged between the adjacent guide columns. The pile foundation detection drill core sampling device has the advantages of being convenient to adjust and operate, and ensuring the safety of the drill core.

Description

Technical Field

[0001] This utility model relates to the field of pile foundation testing technology, and in particular to a core sampling device for pile foundation testing. Background Technology

[0002] The main methods for pile foundation testing include static load testing, core drilling, low-strain method, high-strain method, and sonic logging. Core drilling is scientific, intuitive, and practical, and is widely used in testing cast-in-place concrete piles. A complete and successful core drilling test can obtain information on pile length, concrete strength, pile bottom sediment thickness, and pile integrity, and determine or identify the soil and rock properties of the bearing stratum at the pile tip.

[0003] Currently, when core drilling is carried out, a support frame is used and erected around the pile foundation. The current core drill bit is erected on the support frame. Since the land around the pile foundation is mostly uneven, the placement position needs to be leveled to ensure the stability of the core drilling. However, it is difficult to ensure that the core drill bit is perpendicular to the ground after placement, which can easily cause damage during core drilling. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a pile foundation testing core sampling device that is easy to adjust, ensures core drilling safety, and is easy to operate.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A core sampling device for pile foundation testing includes a base and a base frame for supporting the base. The base frame includes guide support structures located at the four corners of the base. A lifting cylinder is fixedly installed on the base. The cylinder rod of the lifting cylinder passes through the base and is fixedly connected to a mounting plate. A motor is fixedly installed downward on the mounting plate via two motor brackets. The output axis of the motor is arranged downward and a drill bit is fixedly installed thereon.

[0007] The guide support structure includes guide columns, each equipped with a vertical adjustment component for moving the bracket in the vertical direction. The base is fixedly connected to the bracket, and a connecting component is provided between adjacent guide columns.

[0008] In this way, the base frame is installed at the sampling site. After the installation is completed, the base is connected to the base frame. The cylinder rod of the lifting cylinder extends downward to drive the mounting plate to move downward. The motor starts and drives the drill bit to rotate, and the drill bit is used to drill core samples of the pile foundation.

[0009] The connecting components connect the guide columns to form a whole. During the installation of the base frame, the four columns are fixedly installed at the sampling site. Taking one of the brackets as a reference, the level is placed on the two adjacent brackets. The vertical adjustment components are used to adjust the other bracket until the level shows horizontal. The three brackets are adjusted in turn so that the four brackets are on the same plane, completing the installation of the base frame. Then the base is placed on the bracket and fixedly connected to the bracket. At this time, the bracket is a horizontally set bracket, and core drilling and sampling can then be carried out.

[0010] Preferably, four vertically arranged guide rods are fixedly mounted upwards on the mounting plate, and guide holes that slide and engage with the guide rods are provided through the base. The guide rods, in conjunction with the guide holes, guide the movement of the mounting plate, improving the accuracy and stability of core sampling.

[0011] Preferably, a support is fixedly installed outward at the lower end of the guide post, and the support has an anchor hole through which an anchor rod can pass. The guide post is fixedly installed at the sampling site by passing the anchor rod through the anchor hole.

[0012] Preferably, the vertical adjustment assembly includes a screw, a guide post with a mounting groove, the screw located within the mounting groove and connected to the guide post via a bearing, the upper end of the screw passing through the guide post and fixed with a knob, and a nut block threaded onto the screw. The two sides of the nut block are slidably engaged with the two sides of the mounting groove, and the bracket is fixedly connected to the nut block. Rotating the knob rotates the screw, which in turn moves the bracket via the nut block, thus adjusting the height of the bracket. The slidable engagement of the nut block with the two sides of the mounting groove ensures that the nut block can only move vertically.

[0013] Preferably, the bracket is provided with a support opening, the base is fixedly mounted with bolts downwards, the support opening is provided with a through hole that allows the bolt to pass through, the bolt passes through the through hole and is connected to a locking nut, and the locking nut abuts against the bracket.

[0014] Preferably, the connecting assembly is disposed on the guide rails on the inner and outer sides of the guide post, and clamps are installed on the guide rails. The clamps on the inner sides of the two guide posts are fixedly connected by a straight bracket, and the clamps on the outer sides of the two guide posts are fixedly connected by a U-shaped bracket.

[0015] In summary, this pile foundation testing core sampling device has the advantages of being easy to adjust, ensuring core drilling safety, and being convenient to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a core sampling device for pile foundation testing according to the present invention.

[0017] Figure 2 for Figure 1 A structural diagram from another location.

[0018] Figure 3 This is a schematic diagram of the base frame. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0020] like Figure 1-3 As shown, a core sampling device for pile foundation testing includes a base 1 and a base frame for supporting the base. The base frame includes guide support structures located at the four corners of the base. A lifting cylinder 2 is fixedly installed on the base. The cylinder rod of the lifting cylinder passes through the base and is fixedly connected to a mounting plate 3. A motor 5 is fixedly installed downward on the mounting plate via two motor brackets 4. The output axis of the motor is set downward and a drill bit 6 is fixedly installed thereon.

[0021] The guide support structure includes a guide post 7, which is equipped with a vertical adjustment component for driving the bracket 8 to move in the vertical direction. The base is fixedly connected to the bracket, and a connecting component is also provided between adjacent guide posts.

[0022] In this way, the base frame is installed at the sampling site. After the installation is completed, the base is connected to the base frame. The cylinder rod of the lifting cylinder extends downward to drive the mounting plate to move downward. The motor starts and drives the drill bit to rotate, and the drill bit is used to drill core samples of the pile foundation.

[0023] The connecting components connect the guide columns to form a whole. During the installation of the base frame, the four columns are fixedly installed at the sampling site. Taking one of the brackets as a reference, the level is placed on the two adjacent brackets. The vertical adjustment components are used to adjust the other bracket until the level shows horizontal. The three brackets are adjusted in turn so that the four brackets are on the same plane, completing the installation of the base frame. Then the base is placed on the bracket and fixedly connected to the bracket. At this time, the bracket is a horizontally set bracket, and core drilling and sampling can then be carried out.

[0024] In implementation, four vertically arranged guide rods 9 are fixedly mounted upwards on the mounting plate, and guide holes that slide and engage with the guide rods are provided through the base. The guide rods, in conjunction with the guide holes, guide the movement of the mounting plate, improving the accuracy and stability of core sampling.

[0025] In practice, a support 10 is fixedly installed outward at the lower end of the guide post, and the support has an anchor hole through which the anchor rod 11 can pass. The guide post is fixedly installed at the sampling site by passing the anchor rod through the anchor hole.

[0026] In implementation, the vertical adjustment assembly includes a screw 12, a guide post with an installation groove, the screw located within the installation groove and connected to the guide post via a bearing, the upper end of the screw passing through the guide post and fixed with a knob 13, and a nut block threaded onto the screw. The two sides of the nut block slide against the two sides of the installation groove, and the bracket 8 is fixedly connected to the nut block. Rotating the knob rotates the screw, which in turn moves the bracket via the nut block, thus adjusting the height of the bracket. The sliding engagement of the nut block with the two sides of the installation groove ensures that the nut block can only move vertically.

[0027] In practice, the bracket is provided with a support opening 14, and the base is fixedly mounted with bolts downwards. The support opening has a through hole 15 that allows the bolt to pass through. The bolt passes through the through hole and connects with a locking nut, which abuts against the bracket. This facilitates quick and easy fixing of the base and bracket.

[0028] In implementation, the connecting assembly is set on the guide rails 16 on the inner and outer sides of the guide posts. Clamping devices 17 are installed on the guide rails. The clamping devices on the inner sides of the two guide posts are fixedly connected by a straight bracket 18, and the clamping devices on the outer sides of the two guide posts are fixedly connected by a U-shaped bracket 19. The guide rails and clamping devices allow for positional fixation of the two guide posts. When the clamping device is clamped onto the guide rail, it is fixed relative to the guide rail. For sampling sites with different terrains, the clamping device can be loosened and then tightened again after the guide posts are installed. The straight bracket and U-shaped bracket facilitate the connection of the two guide posts.

[0029] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A core sampling device for pile foundation testing, characterized in that, It includes a base (1) and a base frame for supporting the base. The base frame includes guide support structures located at the four corners of the base. A lifting cylinder (2) is fixedly installed on the base. The cylinder rod of the lifting cylinder passes through the base and is fixedly connected to the mounting plate (3). The mounting plate is fixedly installed with a motor (5) downward through two motor brackets (4). The output shaft of the motor is set downward and a drill bit (6) is fixedly installed thereon. The guide support structure includes a guide post (7), which is equipped with a vertical adjustment component for driving the bracket to move in the vertical direction. The base is fixedly connected to the bracket (8), and a connecting component is also provided between adjacent guide posts.

2. The pile foundation testing core sampling device according to claim 1, characterized in that, The mounting plate is fixedly mounted with four vertically arranged guide rods (9), and the base is provided with guide holes that slide with the guide rods.

3. The pile foundation testing core sampling device according to claim 2, characterized in that, The lower end of the guide post is fixedly installed with a support (10), and the support is provided with an anchor hole that allows the anchor rod (11) to pass through.

4. The pile foundation testing core sampling device according to claim 3, characterized in that, The vertical adjustment assembly includes a screw (12), the guide post has an installation groove, the screw is located in the installation groove and connected to the guide post through a bearing, the upper end of the screw passes through the guide post and is fixed with a knob (13), a nut block is threaded onto the screw, the two sides of the nut block are slidably engaged with the two sides of the installation groove, and the bracket is fixedly connected to the nut block.

5. The pile foundation testing core sampling device according to claim 4, characterized in that, The bracket is provided with a support opening (14), and the base is fixedly installed with bolts downward. The support opening is provided with a through hole (15) that allows the bolt to pass through. The bolt passes through the through hole and is connected to a locking nut. The locking nut abuts against the bracket.

6. The pile foundation testing core sampling device according to claim 5, characterized in that, The connecting assembly is set on the guide rails (16) on the inner and outer sides of the guide post. Clamps (17) are installed on the guide rails. The clamps on the inner sides of the two guide posts are fixedly connected by a straight frame (18), and the clamps on the outer sides of the two guide posts are fixedly connected by a U-shaped frame (19).

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