Cast-in-situ bored pile sediment device

Abstract

The invention relates to a cast-in-situ bored pile sediment device, and relates to the field of foundation structure engineering. The telescopic supporting pieces are configured to be supported on the hole wall of the drill hole in the radial direction of the base disc so as to support the base disc; one end of the sleeve is coaxially fixed at the lower end of the base disc; the lead screw is rotatably connected into the sleeve in the circumferential direction of the sleeve and is fixed relative to the base disc in the axial direction; the driving motor is fixed on the base disc to drive the screw rod to rotate; the driving disc is in threaded connection with the lead screw, and the driving disc is configured to be slidably connected with the sleeve in the axial direction under the action of the lead screw; the chassis is fixed at the other end of the screw rod and seals the other end of the sleeve; one end of the slicking rod is connected to the peripheral wall of the chassis and extends in the horizontal direction; and the thickness measuring rod is accommodated in the chassis and the screw rod along the axial direction of the screw rod, the thickness measuring rod is in damping connection with the chassis, and the thickness measuring rod is configured to slide out of the chassis from the lower end under the action of the driving disc. The method has the effect of improving the measurement accuracy of the sediment thickness in the drill hole.

Description

Technical Field

[0001] The present application relates to the technical field of infrastructure engineering, and in particular to a bored cast-in-place pile sedimentation device. Background Art

[0002] Bored piles are currently widely used in various building foundation projects. Before the pile foundation is poured, the bottom sediment of the bored pile needs to be strictly controlled to ensure the pile end bearing capacity of the pile foundation. The thickness of the bottom sediment plays a vital role in the bearing capacity of the bored pile. Excessive sediment will not only cause insufficient bearing capacity of the pile foundation, but also cause excessive settlement of the building.

[0003] As announced as a Chinese invention patent CN113026833A, a device for accurately detecting the thickness of bored cast-in-place pile sediment is disclosed, comprising an integrally formed counterweight portion and a hollow tube, the bottom of the hollow tube being sharpened to facilitate penetration into the sediment, a matching indicator disk being fitted in the hollow tube, and the inner cavity of the hollow tube being able to accommodate mud sediment against the wall for lifting the indicator disk, and a vertical opening being provided on the side wall of the hollow tube to balance the mud sediment pressure in the hollow tube.

[0004] With regard to the above-mentioned related technologies, the inventors believe that the uneven distribution of sediment at the bottom of bored cast-in-place piles can easily lead to undulations on the upper surface of the sediment layer, which in turn makes the result of measuring the sediment thickness using the above-mentioned technical solution inaccurate, affecting the construction quality of bored cast-in-place piles, and there is still room for improvement. Summary of the invention

[0005] In order to improve the accuracy of measuring the thickness of sediment in a borehole, the present application provides a bored pile sediment device.

[0006] The present application provides a bored pile sedimentation device, which adopts the following technical solution: A bored pile sediment device, used for detecting the thickness of sediment at the bottom of a borehole, comprising: The base plate is arranged horizontally; A plurality of telescopic support members, configured to be supported on the wall of the borehole along the radial direction of the base plate to provide support for the base plate; A sleeve, one end of which is coaxially fixed to the lower end of the base plate; A screw rod is rotatably connected to the sleeve along the circumference of the sleeve and is fixed relative to the base plate along the axial direction; A driving motor, fixed on the base plate to drive the screw to rotate; A drive disc, threadedly connected to the screw rod, wherein the drive disc is configured to be slidably connected to the sleeve along the axial direction under the action of the screw rod; A chassis, fixed to the other end of the screw rod and closing the other end of the sleeve; A scraping rod, one end of which is connected to the outer peripheral wall of the chassis and extends in a horizontal direction; and A thickness measuring rod is accommodated in the chassis and the screw rod along the axial direction of the screw rod. The thickness measuring rod is dampingly connected to the chassis. The thickness measuring rod is configured to slide out of the chassis from the lower end under the action of the driving disc.

[0007] By adopting the above technical scheme, after the bored pile sediment device is placed at the bottom of the borehole, it is supported on the inner wall of the borehole by the telescopic support rod, and the scraping rod, the chassis and the screw rod are driven by the driving motor to rotate, and the scraping rod scrapes the upper surface of the sediment layer at the bottom of the borehole. Then, the driving plate moves downward under the drive of the screw rod and the driving motor, and the thickness measuring rod is pushed out of the chassis and inserted into the sediment layer until the bottom of the borehole, and the thickness of the sediment in the borehole is measured, so as to avoid the influence of the undulation of the upper surface of the sediment layer on the sediment thickness measurement, and improve the accuracy of the sediment thickness measurement in the borehole.

[0008] Preferably, it also includes: An elastic ring is rotatably connected to the outer side of the sleeve, and the elastic ring can move synchronously with the driving disk along the axial direction of the screw rod; A connecting rod, one end of which is pivotally connected to the elastic ring, one end of the scraping rod is pivotally connected to the chassis, and the other end of the connecting rod is pivotally connected to the other end of the scraping rod, so that the scraping rod can be attached to the outside of the sleeve or unfolded to extend radially along the chassis; Among them, when the driving disk moves to the first position, the scraping rod is horizontally arranged and the bottom surface of the scraping rod is not higher than the bottom surface of the chassis, the other end of the scraping rod abuts against the inner wall of the drill hole, and the elastic ring is separated from the driving disk and maintained in the first position.

[0009] Preferably, the outer peripheral wall of the driving disk has at least one limiting sliding block, the sleeve is provided with a sliding groove penetrating therethrough and extending along the axial direction of the screw rod, and the limiting sliding block is slidably connected in the sliding groove along the axial direction of the screw rod.

[0010] Preferably, the portion of the limiting sliding block extending out of the sliding groove forms a wedge block having an upper inclined surface and a lower inclined surface, the tip of the wedge block is located outside the sliding groove, and an annular groove adapted to the wedge block is provided on the inner circumferential wall of the elastic ring.

[0011] Preferably, the elastic ring is a rubber ring, and the elastic ring is dampingly connected to the sleeve.

[0012] Preferably, the scraping rod is a telescopic rod, which includes a rod portion and a sleeve portion, one end of the rod portion is pivotally connected to the chassis, the other end of the rod portion is slidably connected to the sleeve portion, and the end of the sleeve portion facing away from the rod portion is pivotally connected to the connecting rod.

[0013] Preferably, the screw rod is provided with a receiving groove extending from the middle to the other end and a limiting guide groove penetrating the side wall of the screw rod and connected with the receiving groove, the thickness measuring rod can be slidably received in the receiving groove, and an abutment column slidably connected to the limiting guide groove and extending out of the limiting guide groove is provided on the outer peripheral wall of the thickness measuring rod, when the driving disk moves to the second position, the driving disk abuts against the upper end of the abutment column, and the second position is located below the first position.

[0014] Preferably, the telescopic support member includes a first rod, a second rod and a compression spring, one end of the first rod is pivotally connected to the base plate, the first rod is arranged in a tubular shape with an opening facing away from the base plate, one end of the second rod is slidably connected to the first rod, the compression spring is arranged in the first rod, one end of the compression spring abuts against the bottom of the first rod and the other end abuts against one end of the second rod, so that the second rod maintains a tendency to slide out of the first rod, and the other end of the first rod and one end of the second rod limit each other, so that the first end of the second rod is maintained in the first rod.

[0015] Preferably, the other end of the telescopic support member is pivotally connected to a guide member extending vertically via a pivot axis extending horizontally, the pivot axis is located in the upper middle part of the guide member, the guide members on both sides of the pivot axis have equal weight, and the guide member has a guide line extending vertically on the side facing away from the telescopic support member, and the guide line is coplanar with the axis of the telescopic support member.

[0016] Preferably, the chassis is provided with a through hole for the thickness measuring rod to pass through, and the outer side of the thickness measuring rod is sleeved with a damping ring, which is arranged in the through hole and fixedly connected to the chassis.

[0017] Preferably, the lower end of the thickness measuring rod has a pointed end, and the outer peripheral wall of the thickness measuring rod is evenly distributed with scale grooves extending in the axial direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a bored pile sedimentation device according to an embodiment of the present application.

[0019] Figure 2 yes Figure 1 Sectional view along AA direction.

[0020] Figure 3 It is a partial exploded schematic diagram of the driving disk, elastic ring and sleeve of an embodiment of the present application; Figure 4 is an exploded schematic diagram of a scraping rod according to an embodiment of the present application; Figure 5is a structural schematic diagram of a bored pile sedimentation device when the driving disk of an embodiment of the present application moves to a second position; Figure 6 yes Figure 5 Cross-sectional view along the BB direction; Figure 7 It is an exploded schematic diagram of the thickness measuring rod, the damping ring and the chassis of the embodiment of the present application; Figure 8 It is a structural schematic diagram of an embodiment of the present application in which a driving disc drives a thickness measuring rod to extend out of a chassis to measure the thickness of sediment.

[0021] Description of reference numerals: 10, base plate; 20, telescopic support member; 21, first rod; 22, second rod; 23, compression spring; 30, sleeve; 31, sliding groove; 40, screw rod; 41, storage groove; 42, limit guide groove; 50, driving motor; 60, driving plate; 61, limit sliding block; 62, wedge block; 70, chassis; 71, through hole; 711, limit groove; 72 , baffle; 73, plug-in slot; 80, scraping rod; 81, rod portion; 82, sleeve portion; 83, scraping teeth; 90, thickness measuring rod; 91, damping ring; 911, limit ring; 92, tip; 93, abutment column; 94, scale groove; 100, elastic ring; 101, ring groove; 110, connecting rod; 120, guide member; 121, pivot shaft; 122, guide wire; 123, vertical plate. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-8 This application is described in further detail.

[0023] The present application embodiment discloses a bored pile sediment device for detecting the thickness of sediment at the bottom of the borehole. Figure 1 and Figure 2 The bored pile sedimentation device includes a base plate 10, a telescopic support member 20, a casing 30, a screw rod 40, a driving motor 50, a driving plate 60, a chassis 70, a scraping rod 80 and a thickness measuring rod 90.

[0024] The base plate 10 is set in a disc shape and the base plate 10 is set horizontally. The telescopic support member 20 is configured to support the borehole wall along the radial direction of the base plate 10 to provide support for the base plate 10, so that the base plate 10 is set horizontally. Several telescopic support members 20 are evenly distributed along the circumference of the base plate 10, one end of the telescopic support member 20 can be directly fixed to the lower end of the base plate 10, and the telescopic support member 20 extends radially along the base plate 10; one end of the telescopic support member 20 can also be pivoted to the lower side of the base plate 10, and the axis of the telescopic support member 20 is coplanar with the axis of the base plate 10, so that during the process of placing the bored pile sediment device into the borehole, the telescopic support member 20 is stored in the lower side of the base plate 10, and it is not easy to contact the borehole wall, so as to avoid affecting the placement of the bored pile sediment device into the borehole. In this embodiment, one end of the telescopic support member 20 is pivoted to the lower side of the base plate 10, and the axis of the telescopic support member 20 is coplanar with the axis of the base plate 10. Specifically, the telescopic support member 20 includes a first rod 21, a second rod 22 and a compression spring 23. One end of the first rod 21 is pivotally connected to the base plate 10. The first rod 21 is arranged in a tubular shape with an opening facing away from the base plate 10. One end of the second rod 22 is slidably connected to the first rod 21. The compression spring 23 is arranged in the first rod 21. One end of the compression spring 23 abuts against the bottom of the first rod 21, and the other end of the compression spring 23 abuts against one end of the second rod 22, so that the second rod 22 maintains a tendency to slide out of the first rod 21. The other end of the first rod 21 and one end of the second rod 22 are mutually limited, that is, a limiting inner convex ring is provided at the open end of the first rod 21, and a limiting outer convex ring is provided at the outer peripheral wall of one end of the second rod 22. The limiting inner convex ring and the limiting outer convex ring are mutually limited, so that the first end of the second rod 22 is maintained in the first rod 21. When the telescopic support member 20 swings to a horizontal setting, the first rod 21 abuts against the lower end of the base plate 10.

[0025] Furthermore, the other end of the telescopic support member 20 is pivotally connected to a guide member 120 extending vertically through a pivot shaft 121 extending horizontally, and the pivot shaft 121 is located in the upper middle part of the guide member 120. The weight of the guide member 120 on both sides of the pivot shaft 121 is equal, so that when the telescopic support member 20 swings relative to the base plate 10, the guide member 120 remains vertically arranged. The guide member 120 has a guide line 122 extending vertically on the side facing away from the telescopic support member 20, and the guide line 122 is coplanar with the axis of the telescopic support member 20. Specifically, the guide member 120 includes two vertical plates 123, which extend vertically, and one side of the two vertical plates 123 is fixed in a V-shape, and the opening of the V-shape formed by the two vertical plates 123 is arranged toward the sleeve 30. In the process of pulling the telescopic support member 20 upward to a horizontal setting by pulling the rope, the guide member 120 makes it difficult for the other end of the telescopic support member 20 to fall into the depression of the borehole wall, thereby making the process of pulling the telescopic support member 20 upward to a horizontal setting by pulling the rope smoother.

[0026] The sleeve 30 is fixed to the lower end of the base plate 10 and is coaxially arranged with the base plate 10. The screw rod 40 is inserted into the sleeve 30 and is coaxially arranged with the sleeve 30. The upper end of the screw rod 40 is rotatably connected to the base plate 10 via a bearing in the circumferential direction, so that the screw rod 40 is fixed relative to the sleeve 30 in the axial direction, and the lower end of the screw rod 40 extends to the lower end of the sleeve 30. The drive motor 50 is fixed to the base plate 10 and connected to the upper end of the screw rod 40 to drive the screw rod 40 to rotate. The drive motor 50 can drive the screw rod 40 to rotate forward or reverse.

[0027] Reference Figure 2 and Figure 3 The driving disk 60 is threadedly connected to the screw rod 40, and the driving disk 60 is configured to be slidably connected to the sleeve 30 along the axial direction under the action of the screw rod 40, that is, the driving disk 60 is sleeved on the screw rod 40 and threadedly connected to the screw rod 40, and the driving disk 60 is slidably connected to the sleeve 30 along the axial direction. The driving disk 60 is stationary relative to the sleeve 30 along the circumferential direction, so that when the screw rod 40 rotates, the driving disk 60 can be driven to slide axially relative to the screw rod 40 and the sleeve 30. Specifically, the outer peripheral wall of the driving disk 60 has at least one limiting sliding block 61. In this example, there are preferably three limiting sliding blocks 61 and they are evenly distributed along the circumference of the driving disk 60. The sleeve 30 is provided with a sliding groove 31 that passes through and extends axially along the screw rod 40. The limiting sliding block 61 is slidably connected to the sliding groove 31 along the axial direction of the screw rod 40; when the screw rod 40 rotates, the driving disk 60 does not rotate with the screw rod 40 under the limiting action of the limiting sliding block 61 and the sliding groove 31, thereby moving axially along the sleeve 30 through the threaded connection between the screw rod 40 and the driving disk 60.

[0028] The chassis 70 is fixed to the lower end of the screw rod 40 and closes the lower end of the sleeve 30. The chassis 70 is rotatably connected to the sleeve 30. One end of the scraping rod 80 is connected to the outer peripheral wall of the chassis 70 and extends in the horizontal direction. There are at least two scraping rods 80. The two scraping rods 80 are evenly distributed along the circumference of the chassis 70. When the bored pile sediment device is placed in the borehole, the end of the scraping rod 80 away from the chassis 70 approaches or abuts against the inner peripheral wall of the borehole. The scraping rod 80 rotates with the screw rod 40 through the chassis 70, and can scrape the unevenness of the upper surface of the sediment layer. A plurality of scraping teeth 83 are provided on the lower side of the scraping rod 80. The plurality of scraping teeth 83 are evenly distributed along the length direction of the scraping rod 80. The scraping teeth 83 can be partially inserted into the upper surface of the sediment layer to more effectively scrape the upper surface of the sediment layer and scrape the upper surface of the sediment layer.

[0029] In one example, one end of the scraping rod 80 is fixedly connected to the outer peripheral wall of the chassis 70, so that the scraping rod 80 can rotate with the screw 40 through the chassis 70, and can scrape off the unevenness of the upper surface of the sediment layer, so as to facilitate the subsequent measurement of the thickness of the sediment in the borehole, thereby improving the measurement accuracy of the sediment thickness in the borehole.

[0030] The scraping rod 80 is fixedly connected to the outer peripheral wall of the chassis 70. When the bored pile sedimentation device is placed in the borehole, the end of the scraping rod 80 away from the chassis 70 approaches or abuts against the inner peripheral wall of the borehole, which easily affects the smooth placement of the bored pile sedimentation device into the bottom of the borehole. Figure 2 and Figure 3 In one example, one end of the scraping rod 80 is pivotally connected to the outer peripheral wall of the chassis 70 so that the scraping rod 80 can swing up and down around one end thereof. The bored pile sedimentation device further includes an elastic ring 100 and a connecting rod 110. The elastic ring 100 is rotatably sleeved on the outer side of the sleeve 30, and the elastic ring 100 is configured to move synchronously with the driving disc 60 along the axial direction of the screw rod 40. Specifically, the elastic ring 100 is made of rubber, and the elastic ring 100 is dampingly connected to the sleeve 30; the portion of the limiting sliding block 61 extending out of the sliding groove 31 forms a wedge block 62 having an upper inclined surface and a lower inclined surface, and the tip 92 of the wedge block 62 is located on the outer side of the sliding groove 31. Correspondingly, an annular groove 101 adapted to the wedge block 62 is provided on the inner circumferential wall of the elastic ring 100, and the opening of the annular groove 101 gradually decreases in the direction radially away from the axis, and the wedge block 62 is embedded in the annular groove 101 and can rotate circumferentially relative to the elastic ring 100 in the annular groove 101, so that the elastic ring 100 can rotate circumferentially relative to the driving disk 60.

[0031] One end of the connecting rod 110 is pivotally connected to the elastic ring 100 so that the other end of the connecting rod 110 can swing closer to or away from the sleeve 30, and the other end of the connecting rod 110 is pivotally connected to the other end of the scraping rod 80 so that the scraping rod 80 can be stored on one side of the sleeve 30 or unfolded to be horizontally arranged under the drive of the elastic ring 100 and the driving disk 60.

[0032] Reference Figure 5 A baffle 72 is integrally provided at the lower end of the chassis 70. When the scraping rod 80 is horizontally arranged, the baffle 72 abuts against the lower side of the scraping rod 80 to limit the scraping rod 80, so that the scraping rod 80 no longer continues to swing downward and remains horizontally arranged.

[0033] When the driving disk 60 moves to the first position, the scraping rod 80 is horizontally arranged and the bottom surface of the scraping rod 80 is not higher than the bottom surface of the chassis 70. The other end of the scraping rod 80 abuts against the inner wall of the borehole. The driving disk 60 continues to move downward under the drive of the screw 40. The driving disk 60 drives the elastic ring 100 to elastically deform outward and thus separates from the elastic ring 100. After the elastic ring 100 recovers its deformation, it is dampedly connected to the sleeve 30, so that the elastic ring 100 maintains the first position, thereby keeping the scraping rod 80 horizontally arranged.

[0034] When the diameter of the drilled hole is large, the length of the scraping rod 80 is correspondingly long, which is not conducive to being received on one side of the casing 30. Figure 4In one example, the scraping rod 80 is a telescopic rod, and the scraping rod 80 includes a rod portion 81 and a sleeve portion 82. One end of the rod portion 81 is pivotally connected to the chassis 70, and the other end of the rod portion 81 is slidably connected to the sleeve portion 82. The end of the sleeve portion 82 away from the rod portion 81 is pivotally connected to the connecting rod 110. Initially, the rod portion 81 is accommodated in the sleeve portion 82. When the scraping rod 80 is driven by the elastic ring 100, the driving disk 60 and the connecting rod 110 to abut against the upper side of the baffle plate 72, the elastic ring 100 and the driving disk 60 continue to move downward, and the connecting rod 110 drives the rod portion 81 to gradually slide out of the sleeve portion 82 until the end of the scraping rod 80 away from the chassis 70 abuts against the inner peripheral wall of the drill hole.

[0035] Reference Figure 6 and Figure 7 The upper end of the chassis 70 is provided with a plug-in slot 73, which is coaxially arranged with the chassis 70. The optical axis at the lower end of the screw rod 40 is plugged into the plug-in slot 73 to fix the chassis 70 to the lower end of the screw rod 40. The screw rod 40 is provided with a receiving slot 41 extending from the middle to the lower end, and a limiting guide slot 42 penetrating the side wall of the screw rod 40 and communicating with the receiving slot 41. The thickness measuring rod 90 can be slidably received in the receiving slot 41. The outer peripheral wall of the thickness measuring rod 90 is provided with an abutment column 93, which can be slidably connected to the limiting guide slot 42 and extend out of the limiting guide slot 42. When the driving disk 60 moves to the second position, the driving disk 60 abuts against the upper end of the abutment column 93, and the second position is located below the first position; the driving disk 60 continues to move downward under the action of the driving motor 50 and the screw rod 40, and the thickness measuring rod 90 can be driven to slide out of the screw rod 40.

[0036] The thickness measuring rod 90 penetrates the chassis 70 along the axial direction of the screw rod 40. The chassis 70 is provided with a through hole 71 for the thickness measuring rod 90 to penetrate. The through hole 71 is coaxially arranged with the chassis 70 and communicated with the receiving groove 41. The thickness measuring rod 90 is sequentially penetrated in the through hole 71 and the receiving groove 41. The thickness measuring rod 90 is dampedly connected with the chassis 70. Specifically, a damping ring 91 is sleeved on the outer side of the thickness measuring rod 90. The damping ring 91 is arranged in the through hole 71. The upper end surface of the damping ring 91 is flush with the bottom surface of the plug-in groove 73. The lower end surface of the damping ring 91 is flush with the lower end surface of the chassis 70. A limiting ring 911 is integrally provided in the middle of the outer peripheral wall of the damping ring 91. A limiting groove 711 is provided in the middle of the inner peripheral wall of the through hole 71. The limiting ring 911 is embedded in the limiting groove 711 to fix the damping ring 91 on the chassis 70.

[0037] Furthermore, the lower end of the thickness measuring rod 90 has a tip 92 to facilitate the insertion of the thickness measuring rod 90 into the sediment layer. The outer peripheral wall of the thickness measuring rod 90 is evenly distributed with scale grooves 94 extending along the axial direction to facilitate reading the length of the thickness measuring rod 90 extending from the lower end of the chassis 70.

[0038] The implementation principle of a bored pile sediment device in the embodiment of the present application is as follows: the bored pile sediment device is placed at the bottom of the borehole by fixing a pull rope on the base plate 10, and the pull rope connected to the telescopic support member 20 is used to pull the telescopic support member 20, so that the telescopic support member 20 is supported on the inner peripheral wall of the borehole along the borehole radial direction, so that the base plate 10 is horizontally arranged, and the telescopic support member 20 abuts against the lower end of the base plate 10. A level meter can be set on the base plate 10 to measure whether the base plate 10 is horizontal, so that the base plate 10 is horizontally arranged by pulling a certain telescopic support member 20 or pulling several telescopic support members 20 according to the measurement value of the level meter, and the telescopic support member 20 abuts against the lower end of the base plate 10. If necessary, a counterweight ring can be coaxially arranged at the upper end of the base plate 10, so that the base plate 10 is not easy to shake when the telescopic support member 20 is pulled.

[0039] The driving motor 50 drives the screw rod 40 to rotate, and the screw rod 40 drives the driving disc 60 and the elastic ring 100 to move downward in the axial direction. The driving disc 60 moves to the first position, so that the scraping rod 80 swings downward to the end that is horizontally arranged and away from the chassis 70 and abuts against the inner peripheral wall of the drill hole; the driving disc 60 continues to move downward under the drive of the driving motor 50 and the screw rod 40, and the driving disc 60 drives the elastic ring 100 to elastically deform outward, thereby separating from the elastic ring 100, and the elastic ring 100 recovers its shape. After the change, it is dampedly connected to the casing 30, so that the elastic ring 100 remains in the first position, and then the scraping rod 80 remains horizontally set. The scraping rod 80 and the chassis 70 rotate synchronously with the screw 40 to scrape the upper surface of the sediment at the bottom of the borehole. The torque of the drive motor 50 can be used to judge whether the upper surface of the sediment at the bottom of the borehole is scraped flat. If the torque of the drive motor 50 remains unchanged after one rotation, it means that the upper surface of the sediment at the bottom of the borehole has been scraped flat. Otherwise, the upper surface of the sediment at the bottom of the borehole has not been scraped flat. After the upper surface of the sediment at the bottom of the borehole is scraped flat, the drive disk 60 continues to move downward to the second position driven by the drive motor 50 and the screw 40. The drive disk 60 abuts against the upper side of the abutment column 93, and then pushes the thickness measuring rod 90 out of the chassis 70 until the lower end of the thickness measuring rod 90 passes through the sediment and is inserted into the bottom of the borehole. Figure 8 Take out the bored pile sediment device, and the length of the thickness measuring rod 90 extending downward from the chassis 70 is the thickness of the sediment at the bottom of the borehole.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bored pile sediment device for detecting the thickness of sediment at the bottom of a borehole, characterized in that: include: The base plate (10) is arranged horizontally; A plurality of telescopic support members (20) configured to be supported radially along the base plate (10) on the wall of the drilled hole to provide support for the base plate (10); A sleeve (30), one end of which is coaxially fixed to the lower end of the base plate (10); A screw rod (40) rotatably connected to the sleeve (30) along the circumferential direction of the sleeve (30) and fixed relative to the base plate (10) along the axial direction; A driving motor (50) fixed on the base plate (10) to drive the screw rod (40) to rotate; A drive disk (60) is threadably connected to the screw rod (40), and the drive disk (60) is configured to be slidably connected to the sleeve (30) along the axial direction under the action of the screw rod (40); A chassis (70) fixed to the other end of the screw rod (40) and sealing the other end of the sleeve (30); A scraping rod (80) having one end connected to the outer peripheral wall of the chassis (70) and extending in a horizontal direction; as well as A thickness measuring rod (90) is housed in the chassis (70) and the screw rod (40) along the axial direction of the screw rod (40); the thickness measuring rod (90) is damping-connected to the chassis (70); and the thickness measuring rod (90) is configured to slide out of the chassis (70) from a lower end under the action of the drive disk (60).

2. The bored pile sedimentation device according to claim 1, characterized in that: Also includes: An elastic ring (100) is rotatably connected to the outer side of the sleeve (30), and the elastic ring (100) can move synchronously with the driving disk (60) along the axial direction of the screw rod (40); A connecting rod (110) having one end pivotally connected to the elastic ring (100), one end of the scraping rod (80) pivotally connected to the chassis (70), and the other end of the connecting rod (110) pivotally connected to the other end of the scraping rod (80), so that the scraping rod (80) can be attached to the outside of the sleeve (30) or unfolded to extend radially along the chassis (70); When the driving disk (60) moves to the first position, the scraping rod (80) is arranged horizontally and the bottom surface of the scraping rod (80) is not higher than the bottom surface of the chassis (70), the other end of the scraping rod (80) abuts against the inner peripheral wall of the drill hole, and the elastic ring (100) is separated from the driving disk (60) and maintained in the first position.

3. The bored pile sediment device according to claim 2, characterized in that: The outer peripheral wall of the driving disk (60) has at least one limiting sliding block (61), the sleeve (30) is provided with a sliding groove (31) penetrating therethrough and extending axially along the screw rod (40), and the limiting sliding block (61) is slidably connected in the sliding groove (31) along the axial direction of the screw rod (40).

4. The bored pile sediment device according to claim 3, characterized in that: The portion of the limit sliding block (61) extending out of the sliding groove (31) forms a wedge-shaped block (62) having an upper inclined surface and a lower inclined surface, the tip (92) of the wedge-shaped block (62) is located outside the sliding groove (31), and the inner peripheral wall of the elastic ring (100) is provided with an annular groove (101) adapted to the wedge-shaped block (62).

5. The bored pile sedimentation device according to any one of claims 2 to 4, characterized in that: The elastic ring (100) is a rubber ring, and the elastic ring (100) is damping-connected to the sleeve (30).

6. The bored pile sediment device according to claim 2, characterized in that: The scraping rod (80) is a telescopic rod, comprising a rod portion (81) and a sleeve portion (82), one end of the rod portion (81) being pivotally connected to the chassis (70), the other end of the rod portion (81) being slidably connected to the sleeve portion (82), and the end of the sleeve portion (82) facing away from the rod portion (81) being pivotally connected to the connecting rod (110).

7. The bored pile sediment device according to claim 2, characterized in that: The screw rod (40) is provided with a receiving groove (41) extending from the middle to the other end, and a limiting guide groove (42) penetrating the side wall of the screw rod and communicating with the receiving groove (41); the thickness measuring rod (90) is slidably received in the receiving groove (41); an abutment column (93) is provided on the outer peripheral wall of the thickness measuring rod (90) and is slidably connected to the limiting guide groove (42) and extends out of the limiting guide groove (42); when the driving disk (60) moves to the second position, the driving disk (60) abuts against the upper end of the abutment column (93); the second position is located below the first position.

8. The bored pile sediment device according to claim 1, characterized in that: The telescopic support member (20) comprises a first rod (21), a second rod (22) and a compression spring (23); one end of the first rod (21) is pivotally connected to the base plate (10); the first rod (21) is arranged in a tubular shape with an opening facing away from the base plate (10); one end of the second rod (22) is slidably connected to the first rod (21); the compression spring (23) is arranged in the first rod (21); one end of the compression spring (23) abuts against the bottom of the first rod (21) and the other end abuts against one end of the second rod (22), so that the second rod (22) maintains a tendency to slide out of the first rod (21); the other end of the first rod (21) and one end of the second rod (22) are mutually limited, so that the first end of the second rod (22) is maintained in the first rod (21).

9. The bored pile sediment device according to claim 1 or 8, characterized in that: The other end of the telescopic support member (20) is pivotally connected to a guide member (120) extending in the vertical direction via a pivot axis (121) extending in the horizontal direction, the pivot axis (121) is located in the upper middle part of the guide member (120), the guide members (120) on both sides of the pivot axis (121) have equal weight, and the guide member (120) has a guide line (122) extending in the vertical direction on a side facing away from the telescopic support member (20), the guide line (122) being coplanar with the axis of the telescopic support member (20).

10. The bored pile sedimentation device according to claim 1, characterized in that: The chassis (70) is provided with a through hole (71) for the thickness measuring rod (90) to pass through, and a damping ring (91) is sleeved on the outer side of the thickness measuring rod (90). The damping ring (91) is arranged in the through hole (71) and is fixedly connected to the chassis (70); The lower end of the thickness measuring rod (90) has a tip (92), and the outer peripheral wall of the thickness measuring rod (90) is evenly distributed with scale grooves (94) extending in the axial direction.

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