A pile foundation structure detection sampling device

Abstract

This utility model relates to a sampling device for pile foundation structure testing, including a mobile carrier and a core drilling device mounted on the mobile carrier. The mobile carrier is equipped with a lifting support, a lifting platform, and a lifting motor that drives the lifting platform to move up and down along the lifting support. The core drilling device includes a core drilling motor fixed to the lifting platform and a core drilling tube detachably connected to the rotating shaft of the core drilling motor. The bottom end of the core drilling tube is provided with a core drilling cutter. A support shaft is provided on the rear bottom of the mobile carrier, and movable casters are provided at both ends of the support shaft and rotatably connected to it. The bottom of the mobile carrier is also provided with a positioning bracket, and the four corners of the bottom of the positioning bracket are respectively provided with gripping feet. It effectively shortens the transfer time between different sampling points, reduces labor and equipment costs, and facilitates the replacement of core drilling tubes of different specifications to meet the sampling requirements of different pile foundations.

Description

Technical Field

[0001] This utility model relates to the field of engineering pile foundation testing technology, specifically to a pile foundation structure testing and sampling device. Background Technology

[0002] In the quality inspection of pile foundations in building engineering, core sampling is a core method for assessing the strength, integrity, and internal defects of pile foundation concrete. Currently, mainstream pile foundation sampling devices generally suffer from two major problems: First, poor mobility. Most devices are heavy and poorly designed for movement, making them difficult to move in complex terrain (such as potholes and muddy areas), requiring the assistance of large handling equipment, which not only increases labor costs but also significantly delays the inspection schedule. Second, limited applicability. The connection structure between the core tube and the drive motor lacks a convenient and adaptable design, making it cumbersome to change core tubes of different specifications. Furthermore, the lack of a targeted guiding and stabilizing structure makes it difficult to meet the sampling needs of pile foundations with different diameters and depths, resulting in a limited testing range and an inability to flexibly address diverse pile foundation testing scenarios. Utility Model Content

[0003] To overcome the above-mentioned technical problems, this utility model proposes a sampling device for pile foundation structure testing, which effectively shortens the transfer time between different sampling points, reduces labor and equipment costs, and facilitates the replacement of core tubes of different specifications to meet the sampling specifications of different pile foundations.

[0004] A pile foundation structure testing and sampling device includes a mobile carrier and a core drilling device mounted on the mobile carrier. The mobile carrier is equipped with a lifting support, a lifting platform, and a lifting motor that drives the lifting platform to move up and down along the lifting support. The core drilling device includes a core drilling motor fixed on the lifting platform and a core drilling tube detachably connected to the rotating shaft of the core drilling motor. The bottom end of the core drilling tube is provided with a core drilling cutter. The bottom rear side of the mobile carrier is provided with a support shaft and the two ends of the support shaft are provided with movable casters that are rotatably connected to it. The bottom of the mobile carrier is also provided with a positioning bracket, and the four corners of the bottom of the positioning bracket are respectively provided with gripping feet.

[0005] Furthermore, a mating key shaft is fixedly connected to the shaft of the core drill motor, and the top of the core tube has a mating groove that corresponds to and matches the mating key shaft. Even further, the groove edge and the bottom edge of the mating key shaft each have arc-shaped guides to facilitate quick mating and allow for easy replacement of core tubes of different specifications.

[0006] Furthermore, the mobile carrier is equipped with a guide sleeve bracket, on which a positioning guide sleeve is fitted onto the core tube. The positioning guide sleeve and the guide sleeve bracket are detachably connected. The inner wall of the positioning guide sleeve has a tube positioning ball that surrounds the edge of the core tube and rolls in contact with the outer wall of the core tube. The inner surface of the positioning guide sleeve has a positioning groove to accommodate the tube positioning ball, and the inner side of the positioning guide sleeve also has a ball positioning ring with a corresponding circular hole. The outer wall of the positioning guide sleeve has a connecting screw that passes through the positioning guide sleeve and is threadedly connected to the positioning ball and positioning ring. The tube positioning ball rolls in contact with the outer wall of the core tube, achieving guidance and stable protection for the core tube.

[0007] Furthermore, the lifting support is equipped with a lifting guide rod, and a lifting guide block that is fixedly connected to the lifting platform is slidably connected to the lifting guide rod. A spring sleeved on the lifting guide rod abuts between the lifting guide block and the bottom end of the lifting support, which plays a role in buffering and resetting.

[0008] Furthermore, the shaft of the lifting motor is fixedly connected to a lifting screw that is arranged along the lifting bracket, and a drive seat that is threadedly connected to the lifting screw and fixedly connected to the lifting platform is sleeved on the lifting screw.

[0009] Furthermore, a trolley handle is provided at the top of the lifting support. The trolley handle has a U-shaped structure and its surface is covered with a non-slip rubber sleeve, making it easy for operators to grip and push the device.

[0010] Furthermore, the bottom of the gripping feet is equipped with a conical spike. The conical spike is made of high-strength steel and can penetrate deep into the ground to achieve stable positioning of the device.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: The device can be moved by tilting the positioning tripod, eliminating the need for large handling equipment. A single person can complete the device transfer, which greatly improves site adaptability and transfer efficiency, effectively shortens the transfer time between different sampling points, and reduces labor and equipment costs. The detachable design of the core drilling motor and core drilling tube makes it easy to replace core drilling tubes of different specifications to meet the sampling requirements of different pile foundations. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is another structural schematic diagram of the present invention.

[0015] Figure 3 This is a schematic diagram of the keyway structure in this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of the positioning ring in the middle tube of this utility model.

[0017] The components include: 1. Lifting bracket, 2. Lifting platform, 3. Lifting motor, 4. Drill core motor, 5. Drill core tube, 6. Support shaft, 7. Moving caster, 8. Positioning bracket, 9. Ground gripping foot, 10. Guide sleeve bracket, 11. Lifting guide rod, 12. Trolley handle, 31. Lifting screw, 32. Drive seat, 41. Connecting key shaft, 51. Connecting groove, 52. Positioning guide sleeve, 53. Tube body positioning ball, 54. Insertion groove, 55. Positioning screw, 21. Lifting guide block, 22. Spring, 521. Positioning groove, 522. Ball positioning ring, 523. Connecting screw. Detailed Implementation

[0018] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0019] Please see Figure 1-4 A pile foundation structure testing and sampling device includes a mobile carrier and a core drilling device mounted on the mobile carrier. The mobile carrier is equipped with a lifting support 1, a lifting platform 2, and a lifting motor 3 that drives the lifting platform 2 to move up and down along the lifting support 1. The core drilling device includes a core drilling motor 4 fixed on the lifting platform 2 and a core drilling tube 5 detachably connected to the rotating shaft of the core drilling motor 4. The bottom end of the core drilling tube 5 is provided with a core drilling cutter. The bottom rear side of the mobile carrier is provided with a support shaft 6 and the two ends of the support shaft 6 are provided with movable casters 7 rotatably connected to it. The bottom of the mobile carrier is also provided with a positioning bracket 8, and the four corners of the bottom of the positioning bracket 8 are respectively provided with gripping feet 9.

[0020] In this embodiment, as Figure 3 As shown, a docking key shaft 41 is fixedly connected to the shaft of the core drill motor 4, and the top end of the core drill tube 5 is provided with a docking groove 51 that corresponds to and matches the docking key shaft 41. Furthermore, the groove edge of the docking groove 51 and the bottom edge of the docking key shaft 41 are respectively provided with arc-shaped guide parts to facilitate quick docking of the two and facilitate quick replacement of core drill tubes 5 of different specifications.

[0021] In this embodiment, as Figure 4As shown, the mobile carrier is equipped with a guide sleeve bracket 10, and the guide sleeve bracket 10 is equipped with a positioning guide sleeve 52 that is sleeved on the core tube 5. The positioning guide sleeve 52 is detachably connected to the guide sleeve bracket 10. The inner wall of the positioning guide sleeve 52 is equipped with a tube positioning ball 53 that surrounds the edge of the core tube 5 and rolls in cooperation with the outer wall of the core tube 5. Specifically, the positioning guide sleeve 52 is equipped with an insertion groove 54 that mates with the guide sleeve bracket 10. The guide sleeve bracket 10 is equipped with a positioning hole, and the insertion groove 54 is equipped with a pin hole corresponding to the positioning hole. The insertion groove 54 is fixedly connected to the guide sleeve bracket 10 by a positioning screw 55 that is threadedly connected to the positioning hole. The positioning guide sleeve 52 has a positioning groove 521 on its inner side to accommodate the positioning ball 53 of the tube body. The inner side of the positioning guide sleeve 52 also has a ball positioning ring 522 with a circular hole corresponding to the positioning ball 53. The outer wall of the positioning guide sleeve 52 has a connecting screw 523 that passes through the positioning guide sleeve 52 and is threadedly connected to the positioning ball positioning ring 522. The positioning ball 53 of the tube body rolls in contact with the outer wall of the core tube 5, achieving guidance and stable protection for the core tube 5.

[0022] In this embodiment, the lifting bracket 1 is provided with a lifting guide rod 11, and a lifting guide block 21 that is fixedly connected to the lifting platform 2 is slidably connected to the lifting guide rod 11. A spring 22 sleeved on the lifting guide rod 11 is abutted between the lifting guide block 21 and the bottom end of the lifting bracket 1, which plays a role in buffering and resetting.

[0023] In this embodiment, the shaft of the lifting motor 3 is fixedly connected to a lifting screw 31 arranged along the lifting bracket 1. A drive seat 32, which is threadedly connected to the lifting screw 31 and fixedly connected to the lifting platform 2, is fitted onto the lifting screw 31. The lifting platform 2 is driven by a screw mechanism, which ensures smooth lifting. Together with the lifting guide rod 11, it achieves smooth lifting of the lifting platform 2, reduces device vibration, and improves device stability.

[0024] In this embodiment, the top of the lifting bracket 1 is provided with a trolley handle 12. The trolley handle 12 has a U-shaped structure and its surface is covered with a non-slip rubber sleeve, which makes it easy for the operator to grip and push the device.

[0025] In this embodiment, the bottom end of the gripping foot 9 is provided with a conical ground spike. The conical ground spike is made of high-strength steel and can penetrate deep into the ground to achieve stable positioning of the device.

[0026] The working principle of this utility model is as follows: During use, the positioning foot 8 on the front side of the device is tilted around the support shaft 6, and the device is moved to the pile foundation testing and sampling position by pushing the trolley handle 12. Then, the conical ground spike at the bottom of the gripping foot 9 is inserted into the ground to achieve stable positioning of the device. The lifting motor 3 drives the lifting platform 2 to the top of the lifting bracket 1. A suitable core tube 5 and positioning guide sleeve are taken, the positioning guide sleeve 52 is fitted onto the core tube 5, and the core tube 5 is placed below the core motor 4. The positioning guide sleeve 52 is fixed on the guide sleeve bracket 10. The lifting motor 3... The lifting platform 2 descends, causing the key shaft 41 on the core drill motor 4 to align with the groove 51 on the core drill tube 5. The core drill motor 4 starts, driving the core drill tube 5 to rotate. Simultaneously, the lifting motor 3 drives the lifting platform 2 to descend, and the core drill bit at the bottom of the core drill tube 5 drills core samples from the pile foundation. During the core drilling process, the tube positioning ball 53 inside the positioning guide sleeve 52 rolls against the outer wall of the core drill tube 5 to ensure the stability of the core drill tube 5. The shaft of the core drill motor 4 aligns with the groove 51 at the top of the core drill tube 5 through the key shaft 41, achieving stable power transmission.

[0027] The beneficial effects achieved by this utility model are as follows: The device can be moved by tilting the positioning bracket 8, without relying on large handling equipment. A single person can complete the device transfer, which greatly improves site adaptability and transfer efficiency, effectively shortens the transfer time between different sampling points, and reduces labor and equipment costs. The detachable design of the core drill motor 4 and the core drill tube 5 makes it easy to replace the core drill tube 5 with different specifications to meet the sampling requirements of different pile foundations.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A sampling device for pile foundation structure testing, comprising a mobile carrier and a core drilling device mounted on the mobile carrier, characterized in that, The mobile carrier is equipped with a lifting support, a lifting platform, and a lifting motor that drives the lifting platform to move up and down along the lifting support. The core drilling device includes a core drilling motor fixed on the lifting platform and a core drilling tube detachably connected to the rotating shaft of the core drilling motor. The bottom end of the core drilling tube is equipped with a core drilling cutter. The bottom rear side of the mobile carrier is equipped with a support shaft and the two ends of the support shaft are equipped with movable casters that are rotatably connected to it. The bottom of the mobile carrier is also equipped with a positioning foot, and the bottom four corners of the positioning foot are respectively equipped with ground gripping feet.

2. The pile foundation structure testing and sampling device according to claim 1, characterized in that, A mating key shaft is fixedly connected to the shaft of the core drill motor, and the top end of the core drill tube is provided with a mating groove that corresponds to and is adapted to the mating key shaft.

3. The pile foundation structure testing and sampling device according to claim 1 or 2, characterized in that, The mobile carrier is equipped with a guide sleeve bracket, and the guide sleeve bracket is equipped with a positioning guide sleeve that is sleeved on the core tube. The positioning guide sleeve and the guide sleeve bracket are detachably connected. The inner wall of the positioning guide sleeve is equipped with a tube positioning ball that surrounds the edge of the core tube and rolls with the outer wall of the core tube.

4. The pile foundation structure testing and sampling device according to claim 1, characterized in that, The lifting support is equipped with a lifting guide rod, and a lifting guide block that is fixedly connected to the lifting platform is slidably connected to the lifting guide rod. A spring sleeved on the lifting guide rod abuts between the lifting guide block and the bottom end of the lifting support.

5. The pile foundation structure testing and sampling device according to claim 1, characterized in that, The shaft of the lifting motor is fixedly connected to a lifting screw that runs along the lifting bracket. A drive seat that is threadedly connected to the lifting screw and fixedly connected to the lifting platform is fitted onto the lifting screw.

6. The pile foundation structure testing and sampling device according to claim 1, characterized in that, The top of the lifting support is equipped with a trolley handle.

7. The pile foundation structure testing and sampling device according to claim 1, characterized in that, The bottom of the gripping feet is equipped with conical spikes.

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