Pile bottom sediment thickness measuring device

Abstract

The utility model provides a pile bottom sediment thickness measuring device, which belongs to the technical field of rotary excavating construction, and comprises a main body, a lifting plate, a distance measuring component and at least three support columns, the main body is used for being placed in a pile hole, the upper end is connected with a lifting rope, and the lower end face is provided with a guide cavity for sediment to enter. The lifting plate is arranged in the guide cavity and can move in the axial direction of the guide cavity relative to the main body; the distance measuring component is arranged on the side, facing the guide cavity, of the lifting plate and used for detecting the moving distance of the lifting plate. The at least three supporting columns are arranged in the circumferential direction of the body at intervals and used for abutting against the inner wall of the pile hole so as to ensure that the body and the pile hole are axially parallel, and the inclination phenomenon after the bottom of the body makes contact with pile bottom sediment is avoided. Compared with the prior art, the pile bottom sediment thickness measuring device can ensure that the moving direction of the lifting plate is parallel to the axial direction of the pile hole, so that the accuracy of a pile bottom sediment thickness measuring result can be ensured.

Description

Technical Field

[0001] This application belongs to the field of rotary drilling technology, specifically relating to a device for measuring the thickness of sediment at the bottom of piles. Background Technology

[0002] Mechanically drilled rotary piles are underground concealed engineering projects, typically employing a mud-slurry pile forming and wall protection process. After the pile hole is formed, whether the thickness of the sediment at the pile bottom meets the specifications directly affects the mechanical properties of the pile and the quality of the pile foundation after subsequent concrete pouring. Therefore, to better control the thickness of the sediment at the pile bottom, it is necessary to measure the sediment thickness.

[0003] In existing technologies, the thickness of the sediment at the bottom of a pile is mainly measured using a cone-shaped measuring pile. Specifically, the measuring pile is lowered to the surface of the sediment at the bottom of the pile using a rope, with the tip of the measuring pile pointing downwards. The pile is then lowered further until it sinks into the sediment under its own weight. By recording the length of the rope from when the measuring pile reaches the surface of the sediment to when it sinks to the bottom, the thickness of the sediment at the bottom of the pile can be determined.

[0004] The inventors discovered that the sediment at the bottom of the pile contains hard particles, which easily cause the measuring pile to tilt after contacting the sediment. Subsequently, as the measuring pile sinks under its own weight, it is difficult to maintain a vertical position, ultimately leading to a technical defect where the final measurement result is too large. Utility Model Content

[0005] This application provides a device for measuring the thickness of sediment at the bottom of a pile, which aims to ensure that the measuring component is inserted vertically into the sediment to ensure the accuracy of the sediment thickness measurement results.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A device for measuring the thickness of sediment at the bottom of a pile is provided, comprising:

[0008] The main body is used to insert into the pile hole; a lifting rope is connected to the upper end of the main body; a guide cavity is opened on the lower end face of the main body, and the guide cavity is used to allow sediment to enter;

[0009] A lifting plate is disposed within the guide cavity and is adapted to move axially relative to the main body along the guide cavity;

[0010] A ranging component, disposed on the side of the lifting plate facing the guide cavity, is used to detect the distance the lifting plate moves axially along the guide cavity; and

[0011] At least three support columns are spaced apart circumferentially along the main body and are all connected to the outer side of the main body; wherein each support column is used to abut against the inner wall of the pile hole so that the main body and the pile hole are axially parallel.

[0012] In one possible implementation, the support column includes:

[0013] A fixing post is disposed on the outer peripheral surface of the main body and extends radially outward along the guide cavity; a slot is formed on the extended end face of the fixing post; and

[0014] A sliding rod is slidably inserted into the slot, and there is an elastic element between it and the bottom of the slot;

[0015] The elastic element is used to drive the sliding rod to move away from the bottom of the slot, so that the sliding rod extends to the outside of the slot and connects with the inner wall of the pile hole.

[0016] In one possible implementation, the extended end of the sliding rod has a roller rotatably connected thereto; the rotational axis of the roller is perpendicular to the axis of the sliding rod and parallel to the horizontal plane, so as to be suitable for rolling along the inner wall of the pile hole.

[0017] In one possible implementation, the elastic element is a spring; the spring is disposed on the side of the sliding rod facing the bottom of the slot, and its two ends are respectively connected to the bottom of the slot and the insertion end face of the sliding rod;

[0018] The spring is in an elastically compressed state to facilitate the movement of the sliding rod away from the bottom of the slot.

[0019] In one possible implementation, the subject includes:

[0020] The upper shell has a hollow interior and a downward-facing opening to form a receiving groove; the suspension rope is connected to the upper end face of the upper shell, and the ranging component is disposed inside the receiving groove; and

[0021] The lower housing is detachably connected to the lower end of the upper housing and has a through-hole structure to form a guide cavity; and the outer diameter of the lower housing gradually decreases in the direction from the upper housing to the lower housing.

[0022] The lifting plate is slidably disposed within the guide cavity and has an upwardly extending connecting rod thereon; the connecting rod is slidably inserted into the receiving groove and is positioned toward the ranging component.

[0023] In one possible implementation, the lower end face of the upper housing is provided with a recessed groove that is coaxially connected with the receiving groove, and the inner peripheral wall of the recessed groove has an internal thread structure.

[0024] The lower housing also includes:

[0025] A docking cylinder is disposed on the upper end face of the lower housing and is adapted to be inserted into the recessed groove; the outer peripheral wall of the docking cylinder has an external thread structure that is compatible with the internal thread structure; and the docking cylinder is connected to the guide cavity.

[0026] In one possible implementation, the upper end of the connecting rod has an elastic sleeve coaxially disposed therewith;

[0027] The elastic sleeve is used to move from the receiving groove to the sinking groove and abut against the upper end face of the lower housing.

[0028] In one possible implementation, the receiving groove extends axially through the upper housing; the upper housing further includes:

[0029] The top cover is detachably connected to the upper end of the upper housing and has a mounting groove communicating with the receiving groove.

[0030] The ranging component is fixedly installed in the mounting groove, and the suspension rope is connected to the upper end face of the top cover.

[0031] In one possible implementation, the top cover has an upper disc extending radially outward therefrom, and the upper housing has a lower disc extending radially outward therefrom and adapted to engage with the upper disc;

[0032] The upper plate has multiple upper through holes, each of which is through in the vertical direction, and the multiple upper through holes are spaced apart along the circumference of the upper plate; the lower plate has multiple lower through holes that are adapted to communicate with the multiple upper through holes one by one.

[0033] The upper housing also includes:

[0034] Multiple connecting bolts are adapted to be inserted into multiple upper through holes in a one-to-one correspondence; each connecting bolt is also adapted to be inserted into a corresponding lower through hole and extend to the lower side of the lower plate body;

[0035] Each of the connecting bolts has a threaded nut at its protruding end, which is used to abut against the lower side of the lower plate.

[0036] In one possible implementation, the ranging component is an infrared sensor;

[0037] The infrared sensor is fixedly installed in the mounting slot, and the opening of the mounting slot has a cover suitable for connecting with the infrared sensor.

[0038] In this embodiment, by manually lowering a hoisting rope, the main body can be inserted into the pile hole, with its lower end face abutting the bottom of the pile hole. Subsequently, by continuing to lower the hoisting rope, the main body can be inserted into the pile bottom sediment under its own weight, allowing the pile bottom sediment to enter the guide cavity, causing the lifting plate to move upward and the reading of the distance measuring component to change. When the main body contacts the bottom of the pile bottom sediment, the total change in the distance measuring component reading is equal to the thickness of the pile bottom sediment.

[0039] When the main body moves inside the pile hole, each support column is connected to the inner wall of the pile hole to make the axis of the main body and the pile hole parallel and to limit the tilt of the main body, so as to ensure that the main body is inserted into the pile bottom sediment along the axis of the pile hole.

[0040] The pile bottom sediment thickness measuring device provided in this embodiment, compared with the prior art, ensures that the measuring component is inserted into the sediment along the axial direction of the pile hole, thereby ensuring the accuracy of the pile bottom sediment thickness measurement results. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a three-dimensional structural schematic diagram of the pile bottom sediment thickness measuring device provided in the embodiments of this application;

[0043] Figure 2 for Figure 1 Front view;

[0044] Figure 3 For along Figure 2 Cross-sectional view of line AA in the middle;

[0045] Figure 4 This is a cross-sectional view of the lower shell used in the embodiments of this application;

[0046] Figure 5 This is a cross-sectional view of the upper shell used in the embodiments of this application;

[0047] Figure 6 This is a three-dimensional structural diagram of the ranging component and top cover used in the embodiments of this application from an explosion perspective;

[0048] Figure 7 This is a partially enlarged schematic diagram of the upper and lower disk bodies used in the embodiments of this application from an explosion perspective;

[0049] Figure 8This is a three-dimensional structural diagram of the lifting plate used in the embodiments of this application;

[0050] Figure 9 This is an exploded structural diagram of the support column used in the embodiments of this application;

[0051] Explanation of reference numerals in the attached drawings: 1. Main body; 11. Upper shell; 111. Receiving groove; 112. Lifting rope; 113. Sinking groove; 114. Lower plate; 1141. Lower through hole; 12. Lower shell; 121. Guide cavity; 122. Docking cylinder; 2. Lifting plate; 21. Connecting rod; 211. Elastic sleeve; 3. Distance measuring component; 4. Support column; 41. Fixed column; 411. Slot; 42. Sliding rod; 421. Elastic element; 422. Roller; 5. Top cover; 51. Mounting groove; 52. Upper plate; 521. Upper through hole; 53. Cover; 6. Connecting bolt; 61. Docking nut. Detailed Implementation

[0052] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0053] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0054] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] Please refer to the following: Figures 1 to 9The pile bottom sediment thickness measuring device provided in this application will now be described. The pile bottom sediment thickness measuring device proposed in this application includes a main body 1, a lifting plate 2, a distance measuring component 3, and a support column 4.

[0057] The main body 1 is a vertical pile structure with an outer diameter smaller than the inner diameter of the pile hole. In actual use, the main body 1 is inserted into the pile hole, and it is necessary to ensure that the axis of the main body 1 is parallel to the axis of the pile hole. It should be noted that the parallelism between the axis of the main body 1 and the axis of the pile hole includes two situations: one is that the main body 1 and the pile hole are set coaxially, in which case the thickness of the sediment at the center of the pile bottom is measured; the other is that the central axis of the main body 1 is misaligned with the central axis of the pile hole, in which case the thickness of the sediment at the location away from the center of the pile bottom is measured. Combining the two methods will result in a more accurate sediment thickness measurement, avoiding the influence of sediment shifting to one side due to construction steps.

[0058] To control the position and retraction of the main body 1, a suspension rope 112 is connected to the upper end of the main body 1. The connection point of the suspension rope 112 is located at the center of the upper surface of the main body 1. This ensures that when the suspension rope 112 is vertical and coaxial with the pile hole, the main body 1 also remains vertical and coaxial with the pile hole. It should be noted that, to ensure that the suspension rope 112 is vertical and coaxial with the pile hole, a fixed pulley is required during the actual measurement process. Specifically, the fixed pulley is fixed to the top of the pile hole, and its cross-sectional circle is tangent to the central axis of the pile hole. Based on this, the suspension rope 112 is passed around the fixed pulley and inserted into the pile hole. The horizontal (or at a certain angle to the horizontal) traction force applied by the operator to the suspension rope 112 can drive the end of the suspension rope 112 inserted into the pile hole to rise and fall.

[0059] A guide cavity 121 is provided on the lower end face of the main body 1. When the main body 1 is inserted into the pile bottom sediment under its own weight, the pile bottom sediment will enter the guide cavity 121. Furthermore, the lifting plate 2 is disposed in the guide cavity 121, and the lifting plate 2 can move relative to the main body 1 along the axial direction of the guide cavity 121. Therefore, after the pile bottom sediment enters the guide cavity 121, the pile bottom sediment will push up the lifting plate 2, thereby increasing the distance between the lifting plate 2 and the lower end face of the main body 1.

[0060] The ranging component 3 is set on the side of the lifting plate 2 facing the guide cavity 121, and is used to detect the distance of the lifting plate 2 moving along the axial direction of the guide cavity 121. Specifically, it detects the distance of the lifting plate 2 away from the lower end face of the main body 1, thereby obtaining the thickness of the sediment entering the guide cavity 121.

[0061] The support columns 4 have at least three columns, which are spaced apart circumferentially along the main body 1, specifically:

[0062] When there are three support columns 4, the three support columns 4 are arranged at intervals along the circumference of the main body 1, and the included angle between two adjacent support columns 4 is 120 degrees.

[0063] When there are three or more support columns 4, at least three of them are spaced apart along the circumference of the main body 1, and the included angle between any two adjacent support columns 4 is 120 degrees.

[0064] Based on this, each support column 4 is connected to the outer side of the main body 1 and extends outward along the radial direction of the main body 1; when the main body 1 is inserted into the pile hole, each support column 4 can abut against the inner wall of the pile hole so that the main body 1 and the pile hole are axially parallel and the main body 1 is prevented from tilting relative to the pile hole, thus achieving the technical purpose of ensuring that the main body 1 is inserted into the pile bottom sediment in a vertical direction.

[0065] In this embodiment, by manually lowering the hoisting rope 112, the main body 1 can be inserted into the pile hole, with its lower end face abutting the bottom of the pile hole. Subsequently, by continuing to lower the hoisting rope 112, the main body 1 can be inserted into the pile bottom sediment under its own weight, allowing the pile bottom sediment to enter the guide cavity 121, and causing the lifting plate 2 to move upward and the reading of the distance measuring component 3 to change. When the main body 1 contacts the bottom of the pile bottom sediment, the total change in the reading of the distance measuring component 3 is equal to the thickness of the pile bottom sediment.

[0066] When the main body 1 moves inside the pile hole, each support column 4 is connected to the inner wall of the pile hole so that the axis of the main body 1 and the pile hole are parallel and the tilt of the main body 1 is restricted, so as to ensure that the main body 1 is inserted into the pile bottom sediment along the axis of the pile hole.

[0067] In addition, during the pile bottom sediment thickness measurement stage, there is a special case where a reinforcing cage or other reinforcement system has been inserted into the pile hole. In this case, the movement of support column 4 will be affected by the reinforcing cage. For this situation, four different implementation schemes are usually adopted:

[0068] First, the main body 1 is placed inside the steel cage. This method is usually used when there are no reinforcing ribs or other components inside the steel cage that interfere with the movement of the main body 1, and the support column 4 can be stably supported on the inner wall of the steel cage.

[0069] Secondly, the main body 1 is placed in the annular cavity space between the reinforcing cage and the inner wall of the pile hole, so that the support column 4 abuts against the inner wall of the pile hole or the outer wall of the reinforcing cage. This solution is usually applied when the outer wall of the reinforcing cage can abut against the support column 4, or when the support column 4 can avoid the reinforcing cage and contact the inner wall of the pile hole.

[0070] Third, place the main body 1 in any position and support the support column 4 on the upper side of the reinforcing cage; when the lower end of the main body 1 abuts against the upper surface of the pile bottom sediment, the support column 4 is placed below the space on the upper side of the reinforcing cage to abut against the inner wall of the pile hole, and has a certain downward space; this scheme is usually applied when there is a certain distance between the top of the reinforcing cage and the top of the pile hole, and it is necessary to select the main body 1 with a length that is compatible with the insertion depth of the reinforcing cage.

[0071] Fourth, a cylindrical component coaxially arranged with the pile hole is fixed on the forming surface of the pile hole. When the main body 1 is inserted into the pile hole, the support column 4 and the inner wall of the cylindrical component are made to fit together so that the axial direction of the main body 1 is parallel to the axial direction of the pile hole. This solution is usually used when the first three solutions cannot be achieved.

[0072] The pile bottom sediment thickness measuring device provided in this embodiment, compared with the prior art, ensures that the measuring component is inserted into the sediment along the axial direction of the pile hole, thereby ensuring the accuracy of the pile bottom sediment thickness measurement results.

[0073] In some embodiments, such as Figure 1 , Figure 2 and Figure 9 As shown, the support column 4 includes a fixed column 41 and a sliding rod 42.

[0074] The fixing post 41 is disposed on the outer peripheral surface of the main body 1 and extends outward radially along the guide cavity 121; based on this, a slot 411 is provided on the extended end face of the fixing post 41.

[0075] The sliding rod 42 is slidably inserted into the slot 411, and there is an elastic element 421 between it and the bottom of the slot 411. In actual use, the elastic element 421 is used to drive the sliding rod 42 to move away from the bottom of the slot 411, so that the sliding rod 42 extends to the outside of the slot 411 and connects with the inner wall of the pile hole.

[0076] By adopting the above technical solution, the sum of the length of the sliding rod 42 extending out of the slot 411, the length of the fixed column 41, and the radius of the cross-sectional circle of the main body 1 is the radius of the inner cross-sectional circle of the pile hole; wherein, the length of the sliding rod 42 extending out of the slot 411 is adjustable, so it can be adapted to pile holes of different specifications.

[0077] It should be further explained that, in order to prevent the sliding rod 42 from disengaging from the slot 411 and causing an accidental fall, the opening of the slot 411 has a first blocking part extending radially inward, and the insertion end of the sliding rod 42 has a second blocking part extending radially outward; when the insertion end of the sliding rod 42 moves to the opening of the slot 411, the second blocking part and the first blocking part abut against each other to prevent the sliding rod 42 from separating from the fixing post 41.

[0078] In some embodiments, such as Figure 1 , Figure 2 and Figure 9 As shown, the extended end of the sliding rod 42 has a roller 422 rotatably connected to it. Specifically, the roller 422 is mounted on a connecting seat and is rotatable relative to the connecting seat; the connecting seat is fixedly connected to the extended end of the sliding rod 42, and the rotation axis of the roller 422 is perpendicular to the axis of the sliding rod 42 and parallel to the horizontal plane.

[0079] After the main body 1 is placed into the pile hole, the sliding rod 42 will move outward under the driving action of the elastic element 421, so that the extended end of the sliding rod 42 moves toward the inner wall of the pile hole, and the roller 422 abuts against the inner wall of the pile hole and rolls along the inner wall of the pile hole along the pile hole axis, thereby ensuring the smoothness of the movement process of the main body 1.

[0080] In some embodiments, such as Figure 9 As shown, the elastic element 421 is a spring.

[0081] The spring is located on the side of the sliding rod 42 facing the bottom of the slot 411, and its two ends are respectively connected to the bottom of the slot 411 and the insertion end face of the sliding rod 42.

[0082] In actual use, the spring is in an elastic compression state, which is suitable for driving the sliding rod 42 to move away from the bottom of the slot 411.

[0083] In some embodiments, such as Figures 1 to 5 As shown, the main body 1 includes an upper shell 11 and a lower shell 12.

[0084] The upper housing 11 has a hollow interior and a downward-facing opening to form a receiving groove 111. Furthermore, the support column 4 is fixedly installed on the outer wall of the upper housing 11.

[0085] Based on this, the suspension rope 112 is connected to the upper end face of the upper housing 11, and the ranging component 3 is disposed inside the receiving groove 111.

[0086] The lower housing 12 is detachably connected to the lower end of the upper housing 11 and has a through structure in the vertical direction to form the aforementioned guide cavity 121.

[0087] It should be noted that the reason for designing the upper housing 11 and the lower housing 12 as a detachable connection structure is to improve the utilization rate of the parts. Specifically, when testing pile holes of different depths, different upper housings 11 can be selected to increase or decrease the overall length. In addition, the detachable connection structure also facilitates the disassembly and cleaning of the lower housing 12, as well as the replacement, repair, and maintenance of parts.

[0088] To ensure that the lower housing 12 can be quickly inserted into the pile bottom sediment without significantly affecting the pile bottom sediment at the detection location, the outer diameter of the lower housing 12 gradually decreases in the direction from the upper housing 11 to the lower housing 12, forming a conical structure to ensure that the lower end face of the lower housing 12 can be inserted more smoothly into the interior of the pile bottom sediment.

[0089] In this embodiment, the aforementioned lifting plate 2 is slidably disposed in the guide cavity 121, and has an upwardly extending connecting rod 21 thereon; the connecting rod 21 is slidably inserted into the receiving groove 111 and is disposed toward the ranging member 3, so that the lifting movement of the lifting plate 2 is converted into the movement of the connecting rod 21 toward or away from the ranging member 3, thereby converting the lifting distance of the lifting plate 2 into the reading change of the ranging member 3.

[0090] In some embodiments, such as Figures 3 to 5 As shown, the lower end face of the upper housing 11 is provided with a recessed groove 113 that is coaxially connected with the receiving groove 111, and the inner peripheral wall of the recessed groove 113 has an internal thread structure.

[0091] Based on the foregoing, in this embodiment, the lower housing 12 further includes a docking cylinder 122.

[0092] The docking cylinder 122 is disposed on the upper end face of the lower housing 12 and is connected to the guide cavity 121. Specifically, the guide cavity 121 is disposed through the axial direction of the lower housing 12, and the guide cavity 121 is located inside the docking cylinder 12 at the through point at the upper end of the lower housing 12. Alternatively, a reserved hole communicating with the guide cavity 121 is opened on the upper end face of the lower housing 12, and this reserved hole is located inside the docking cylinder 122.

[0093] In actual use, the docking cylinder 122 is suitable for insertion into the recessed groove 113; and the outer peripheral wall of the docking cylinder 122 has an external thread structure that is compatible with the internal thread structure, so that after the docking cylinder 122 is inserted into the recessed groove 113, the lower housing 12 can be rotated to make the docking cylinder 122 and the recessed groove 113 threadedly engaged, and finally the lower housing 12 and the upper housing 11 are detachably connected.

[0094] In some embodiments, such as Figure 3 and Figure 8 As shown, the upper end of the connecting rod 21 has an elastic sleeve 211 coaxially arranged therewith; the elastic sleeve 211 is sleeved on the outer periphery of the connecting rod 21. In order to achieve stable assembly between the elastic sleeve 21 and the connecting rod 21, the outer peripheral surface of the connecting rod 21 also has a plurality of annular grooves spaced apart along its axial direction. The inner peripheral surface of the elastic sleeve 211 has a plurality of annular protrusions that are fitted into the plurality of annular grooves one by one.

[0095] In actual use, the combined structure of the elastic sleeve 211 and the connecting rod 21 can be inserted into the receiving groove 111 and move along the axial direction of the receiving groove 111; it can also move from the receiving groove 111 to the sinking groove 113 and abut against the upper end face of the lower housing 12, thereby restricting the connecting rod 21 from moving into the guide cavity 121 without human intervention, thus achieving the technical purpose of restricting the lowest position of the lifting plate 2 and restricting the lifting plate 2 from leaving the guide cavity 121.

[0096] In some embodiments, such as Figure 3 , Figure 5 and Figure 6 As shown, the receiving groove 111 extends through the axial direction of the upper housing 11; that is, the receiving groove 111 extends upward from the lower end of the upper housing 11 until it penetrates the upper end face of the upper housing 11, forming a perforated cavity structure. Alternatively, the upper end face of the upper housing 11 is provided with a mating hole that communicates with the receiving groove 111, and this mating hole and the receiving groove 111 together constitute the aforementioned through structure.

[0097] Based on the foregoing, the upper housing 11 also includes a top cover 5, which is detachably connected to the upper end of the upper housing 11, and the top cover 5 has a mounting groove 51 communicating with the receiving groove 111.

[0098] The mounting groove 51 is located on the side of the top cover 5 facing the upper housing 11 and is connected to the receiving groove 111; the ranging component 3 is fixedly installed in the mounting groove 51 and its detection end is set towards the connecting rod 21 in the receiving groove 111; the suspension rope 112 is connected to the upper end face of the top cover 5 and is located at the center of the upper end face of the top cover 5.

[0099] In some embodiments, such as Figure 3 and Figure 7 As shown, the top cover 5 has an upper plate 52 extending radially outward; based on this, the upper shell 11 has a lower plate 114 extending radially outward. When the upper shell 11 and the top cover 5 are connected at a preset position, the lower plate 114 is connected to the upper plate 52, and the lower plate 114 and the upper plate 52 are coaxially arranged, with the outer edge of the lower plate 114 aligned with the outer edge of the upper plate 52.

[0100] The upper plate 52 has multiple upper through holes 521, each of which extends axially along the top cover 5, and the multiple upper through holes 521 are spaced apart circumferentially along the upper plate 52. Similarly, the lower plate 114 has multiple lower through holes 1141, each of which extends axially along the upper shell 11, and the multiple lower through holes 1141 are spaced apart circumferentially along the lower plate 114. When the upper plate 52 and lower plate 114 are coaxially arranged, rotating the top cover 5 relative to the upper shell 11 allows the multiple lower through holes 1141 to connect with the multiple upper through holes 521 in a one-to-one correspondence.

[0101] Based on the foregoing, the upper housing 11 also includes multiple connecting bolts 6.

[0102] Multiple connecting bolts 6 can be inserted into multiple upper through holes 521 one by one; each connecting bolt 6 is also suitable for being inserted into the corresponding lower through hole 1141 and extending to the lower side of the lower plate 114.

[0103] Furthermore, each connecting bolt 6 is threaded with a mating nut 61, which is used to thread into the protruding end of the connecting bolt 6 so that the mating nut 61 abuts against the lower side of the lower plate 114, thereby cooperating with the head of the connecting bolt 6 to abut against the upper plate 52 and the lower plate 114 respectively, to fix the relative position of the lower plate 114 and the upper plate 52, thus ultimately achieving the technical purpose of detachably connecting the top cover 5 and the upper shell 11.

[0104] In some embodiments, such as Figure 3 and Figure 6 As shown, the ranging component 3 is an infrared sensor.

[0105] The infrared sensor is fixedly mounted in the mounting groove 51, and the opening of the mounting groove 51 has a cover 53 suitable for contacting the infrared sensor. The lower end face of the cover 53 is aligned with the opening face of the mounting groove 51, so that after the top cover 5 and the upper housing 11 are connected, the upper housing 11 abuts against the lower end face of the cover 53, preventing the cover 53 from becoming loose and preventing the infrared sensor from vibrating during use (due to environmental influences). Furthermore, the infrared sensor is positioned facing the receiving groove 111 that communicates with the mounting groove 51, and the cover 53 has a clearance hole that communicates with the receiving groove 111.

[0106] It should be noted that an infrared sensor is a sensor that can sense infrared radiation emitted by a target and uses the physical properties of infrared radiation for measurement. In this embodiment, the infrared sensor can emit infrared radiation into the receiving groove 111. After the infrared radiation enters the receiving groove 111 through the clearance hole, it will fall on the upper end face of the connecting rod 21, thus obtaining value one. After the lifting plate 2 rises, the position of the upper end of the connecting rod 21 will also change, thus causing the infrared sensor to obtain value two.

[0107] The difference between value 2 and value 1 is the distance by which the lifting plate 2 moves along the axial direction of the receiving groove 111. Based on this, when value 1 corresponds to the case where the lower end of the main body 1 abuts against the outer surface of the pile bottom sediment, and value 2 corresponds to the case where the lower end of the main body 1 abuts against the inner bottom surface of the pile bottom sediment, the difference between value 2 and value 1 is the measured thickness of the pile bottom sediment.

[0108] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for measuring the thickness of sediment at the bottom of a pile, characterized in that, include: The main body is used to insert into the pile hole; a lifting rope is connected to the upper end of the main body; a guide cavity is opened on the lower end face of the main body, and the guide cavity is used to allow sediment to enter; A lifting plate is disposed within the guide cavity and is adapted to move axially relative to the main body along the guide cavity; A ranging component, disposed on the side of the lifting plate facing the guide cavity, is used to detect the distance the lifting plate moves axially along the guide cavity; and At least three support columns are spaced apart circumferentially along the main body and are all connected to the outer side of the main body; wherein each support column is used to abut against the inner wall of the pile hole so that the main body and the pile hole are axially parallel.

2. The pile bottom sediment thickness measuring device as described in claim 1, characterized in that, The support column includes: A fixing post is disposed on the outer peripheral surface of the main body and extends radially outward along the guide cavity; a slot is formed on the extended end face of the fixing post; and A sliding rod is slidably inserted into the slot, and there is an elastic element between it and the bottom of the slot; The elastic element is used to drive the sliding rod to move away from the bottom of the slot, so that the sliding rod extends to the outside of the slot and connects with the inner wall of the pile hole.

3. The pile bottom sediment thickness measuring device as described in claim 2, characterized in that, The extended end of the sliding rod has a roller rotatably connected thereto; the rotation axis of the roller is perpendicular to the axis of the sliding rod and parallel to the horizontal plane, so as to be suitable for rolling along the inner wall of the pile hole.

4. The pile bottom sediment thickness measuring device as described in claim 2, characterized in that, The elastic element is a spring; the spring is disposed on the side of the sliding rod facing the bottom of the slot, and its two ends are respectively connected to the bottom of the slot and the insertion end face of the sliding rod; The spring is in an elastically compressed state to facilitate the movement of the sliding rod away from the bottom of the slot.

5. The pile bottom sediment thickness measuring device as described in claim 1, characterized in that, The subject includes: The upper shell has a hollow interior and a downward-facing opening to form a receiving groove; the suspension rope is connected to the upper end face of the upper shell, and the ranging component is disposed inside the receiving groove; and The lower housing is detachably connected to the lower end of the upper housing and has a through-structure in the vertical direction to form the guide cavity; and the outer diameter of the lower housing gradually decreases in the direction from the upper housing to the lower housing. The lifting plate is slidably disposed within the guide cavity and has an upwardly extending connecting rod thereon; the connecting rod is slidably inserted into the receiving groove and is positioned toward the ranging component.

6. The pile bottom sediment thickness measuring device as described in claim 5, characterized in that, The lower end face of the upper housing is provided with a recessed groove that is coaxially connected with the receiving groove, and the inner peripheral wall of the recessed groove has an internal thread structure. The lower housing also includes: A docking cylinder is disposed on the upper end face of the lower housing and is adapted to be inserted into the recessed groove; the outer peripheral wall of the docking cylinder has an external thread structure that is compatible with the internal thread structure; and the docking cylinder is connected to the guide cavity.

7. The pile bottom sediment thickness measuring device as described in claim 6, characterized in that, The upper end of the connecting rod has an elastic sleeve coaxially disposed therewith; The elastic sleeve is used to move from the receiving groove to the sinking groove and abut against the upper end face of the lower housing.

8. The pile bottom sediment thickness measuring device as described in claim 5, characterized in that, The receiving groove extends axially along the upper housing; the upper housing further includes: The top cover is detachably connected to the upper end of the upper housing and has a mounting groove communicating with the receiving groove. The ranging component is fixedly installed in the mounting groove, and the suspension rope is connected to the upper end face of the top cover.

9. The pile bottom sediment thickness measuring device as described in claim 8, characterized in that, The top cover has an upper plate extending radially outward therefrom, and the upper shell has a lower plate extending radially outward therefrom and adapted to connect with the upper plate. The upper plate has multiple upper through holes, each of which is through in the vertical direction, and the multiple upper through holes are spaced apart along the circumference of the upper plate; the lower plate has multiple lower through holes that are adapted to communicate with the multiple upper through holes one by one. The upper housing also includes: Multiple connecting bolts are adapted to be inserted into multiple upper through holes in a one-to-one correspondence; each connecting bolt is also adapted to be inserted into a corresponding lower through hole and extend to the lower side of the lower plate body; Each of the connecting bolts has a threaded nut at its protruding end, which is used to abut against the lower side of the lower plate.

10. The pile bottom sediment thickness measuring device as described in claim 8, characterized in that, The ranging component is an infrared sensor; The infrared sensor is fixedly installed in the mounting slot, and the opening of the mounting slot has a cover suitable for connecting with the infrared sensor.

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