Pile foundation sediment thickness detection device for ocean engineering

Abstract

The utility model relates to the technical field of pile foundation sediment thickness detection instruments, and discloses a pile foundation sediment thickness detection device for ocean engineering, which comprises a detector host, placing pockets, a take-up and pay-off line and a detection probe, the placing pockets are fixed on two sides of the detector host, one side of the detector host is fixedly connected with the detection probe through the take-up and pay-off line, and the detection probe is fixedly connected with the detector host through the take-up and pay-off line. The outer side of the upper end of the detection probe is sequentially sleeved with a first protection cylinder, a second protection cylinder and a third protection cylinder to form a multi-layer telescopic protection structure; when the detection probe is put down, the first to third protection cylinders are telescopically folded through linkage of the sliding blocks and the sliding grooves, and are gradually unfolded to form a protection layer during putting down, so that impact and collision of the inner wall of a pile foundation or other external structures on the probe can be effectively resisted, the detection probe is allowed to be put down quickly, and the operation efficiency is improved; through supporting of three layers of supporting rings, a guide channel is formed by matching with multiple groups of pulleys on the inner side of the protective cylinder, vertical detection of the probe is ensured, and the detection accuracy of the probe is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of pile foundation sediment thickness detection instruments, and in particular to a pile foundation sediment thickness detection device for marine engineering. Background Technology

[0002] In marine engineering pile foundation construction, accurate detection of sediment thickness is crucial for assessing pile bearing capacity. Traditional detection methods often employ gravity probes, which are vertically lowered to the pile bottom via a guide wire. Sediment data is then fed back via sensors. Specific instrument details can be found in the appendix. Figure 1 Operators can control and read the detection probes through the host computer.

[0003] However, existing technologies have the following drawbacks: insufficient probe protection, making the probe prone to collision with the pile wall during lowering, leading to sensor damage; to avoid impact, the probe must be lowered extremely slowly (usually at a speed below 0.5 m / s), severely impacting detection efficiency, especially in deep-water pile foundations where time consumption is significant; poor positioning stability, as the probe lacks a radial positioning device, making it susceptible to tilting due to water flow or line swaying during lowering, resulting in a non-perpendicular contact surface with the sediment and measurement thickness values ​​deviating from the actual value (errors can reach 10%-15%); and limited adaptability, as existing protective devices are mostly fixed sleeves, making it difficult to balance protective strength with foldable storage functionality, resulting in poor applicability. Therefore, a marine engineering pile foundation sediment thickness detection device with good protective effect, high operational efficiency, and improved detection accuracy is needed.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this utility model, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the problems in existing pile foundation sediment thickness detectors, such as slow lowering due to poor protection and inability to maintain a stable vertical position after lowering, which affects the detection results, this invention provides a marine engineering pile foundation sediment thickness detection device with good protection, easy and rapid line laying, and high detection accuracy.

[0006] The present invention provides a device for detecting the thickness of sediment in marine engineering pile foundations, which adopts the following technical solution:

[0007] A device for detecting the thickness of sediment in pile foundations for marine engineering includes a main unit, a storage bag, a take-up and release line, and a detection probe. The storage bag is fixed to both sides of the main unit, and the detection probe is fixedly connected to one side of the main unit via the take-up and release line. The storage bag is used to store the detection probe. A first protective cylinder, a second protective cylinder, and a third protective cylinder are sequentially sleeved on the upper outer side of the detection probe to form a multi-layered retractable protective structure. The second protective cylinder is slidably connected to the first protective cylinder by a first slider on the upper inner wall and a first sliding groove on the outer wall of the first protective cylinder. The third protective cylinder is slidably connected to the third protective cylinder by a second slider on the upper inner wall and a second sliding groove on the outer wall of the second protective cylinder. An elastic ring is fixed to the lower outer side of the third protective cylinder to buffer external impacts.

[0008] Furthermore, a guide ring is fixed in the middle of the top surface of the first protective cylinder, and the take-up and release line passes through the guide ring; the inner wall of the guide ring is provided with a connecting groove, and a second pulley is movably connected in the connecting groove through a second shaft to reduce the frictional resistance of the take-up and release line.

[0009] Furthermore, a first support ring is fixed to the lower outer wall of the first protective cylinder, a second support ring is fixed to the lower outer wall of the second protective cylinder, and a third support ring is fixed to the lower outer wall of the third protective cylinder; the elastic ring is fixedly connected to the outer wall of the third support ring.

[0010] Furthermore, the first protective cylinder is longer than the second protective cylinder, and the second protective cylinder is longer than the third protective cylinder, forming a stepped contraction structure.

[0011] Furthermore, a support rod is fixed to the lower inner wall of the first protective cylinder, and a rotating groove is provided at the end of the support rod. The rotating groove is movably connected to a first pulley through an inner first shaft, and the first pulley abuts against the outer wall of the detection probe to assist its vertical movement.

[0012] Furthermore, the first, second, and third support rings are all made of elastic material to buffer the impact of external impacts on the detection probe and ensure the stability of the protective cylinder's extension and retraction.

[0013] Furthermore, the first slide groove and the first slider are symmetrically arranged in four sets, and the second slide groove and the second slider are symmetrically arranged in four sets, to ensure the stability of the protective cylinder's extension and retraction.

[0014] Furthermore, the connecting grooves are symmetrically arranged in four sets with the second pulley, and the support rods are symmetrically arranged in four sets with the first pulley, forming a uniformly stressed structure.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] (1) The multi-layer protective cylinder set in this scheme is sleeved on the outside of the detection probe and the take-up and put-down line. When the detection probe is lowered, the first to third protective cylinders are extended and folded through the linkage of slider and slide groove. When lowered, they unfold step by step to form a protective layer, which protects the outside of the detection probe. It can effectively resist the impact and collision of the probe from the inner wall of the pile foundation or other external structures, thereby allowing the detection probe to be lowered quickly, improving the operation efficiency, and avoiding the situation where the conventional operation method requires the probe to be lowered slowly in order to reduce the impact and affect the efficiency.

[0017] (2) The retractable multi-layer protective cylinder, guide ring, and support rod set in this scheme allow the second protective cylinder to slide inside the third protective cylinder until the second support ring contacts the sludge surface when the probe moves down until the bottom of the third protective cylinder contacts the sludge surface. The first protective cylinder can slide inside the second protective cylinder until the first support ring contacts the sludge surface. With the support of the three layers of support rings, and in conjunction with multiple sets of pulleys inside the protective cylinder to form a guide channel, the tension on the take-up and release line is uniform, the verticality deviation of the probe is <0.5, and the detection is carried out vertically, thus improving the detection accuracy of the probe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the connection between the protective cylinder and the detection probe of this utility model;

[0020] Figure 3 This is a schematic diagram of the retractable protective cylinder of this utility model;

[0021] Figure 4 This is a three-dimensional sectional view of the protective cylinder of this utility model;

[0022] Figure 5 This is a utility model Figure 4 Enlarged view of point A in the middle;

[0023] Figure 6 This is a utility model Figure 4 Enlarged diagram of point B in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Main unit of the detector; 2. Housing pocket; 3. Cable retraction / delay; 4. First protective cylinder; 41. Guide ring; 411. Connecting groove; 412. Second shaft; 413. Second pulley; 42. First slide groove; 43. First support ring; 44. Support rod; 441. Rotating groove; 442. First shaft; 443. First pulley; 5. Second protective cylinder; 51. Second support ring; 52. Second slide groove; 53. First slider; 6. Third protective cylinder; 61. Elastic ring; 62. Third support ring; 63. Second slider; 7. Detection probe. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0026] Example 1: In this example, refer to Figure 1 As shown, specifically, a pile foundation sediment thickness detection device for marine engineering includes a main unit 1, a housing 2, a take-up and take-down cable 3, and a detection probe 7. The top surface of the main unit 1 is equipped with a display screen and operation buttons. The housing 2 is fixed to both sides of the main unit 1. The detection probe 7 is fixedly connected to one side of the main unit 1 through the take-up and take-down cable 3. The housing 2 is used to store the detection probe 7 and can also hold other tools. The above structure constitutes a common pile foundation sediment thickness detection device. The specific principle and method can be referred to the existing technology.

[0027] Reference Figure 1 and Figure 2 As shown, specifically, the upper outer side of the detection probe 7 is sequentially fitted with a first protective cylinder 4, a second protective cylinder 5, and a third protective cylinder 6, forming a multi-layered retractable protective structure. The length of the protective cylinder is greater than that of the probe. The second protective cylinder 5 is slidably connected to the first sliding block 53 on the upper inner wall and the first sliding groove 42 on the outer wall of the first protective cylinder 4. The third protective cylinder 6 is slidably connected to the second sliding block 63 on the upper inner wall and the second sliding groove 52 on the outer wall of the second protective cylinder 5, so that the three layers of protective cylinders can retract. An elastic ring 61 is fixed on the lower outer side of the third protective cylinder 6 to buffer external impacts. The lower third protective cylinder 6 has a large diameter, and the elastic ring 61 is most likely to come into contact with external force impacts, which facilitates buffering. The first sliding groove 42 and the first sliding block 53 are symmetrically arranged in four sets, and the second sliding groove 52 and the second sliding block 63 are symmetrically arranged in four sets to ensure the stability of the protective cylinder's expansion and contraction.

[0028] Specifically, by attaching a sliding and telescopic multi-layer protective sleeve to the outside of the detection probe 7, when the operator lowers the probe to the inside of the pile foundation to detect the sediment thickness, the multi-layer protective sleeve can be stretched and unfolded during the process of lowering the probe, and is fitted to protect the outside of the probe. The protective sleeve can effectively resist external pile foundation impacts, allowing the operator to quickly lower the probe, thereby improving the probe protection effect and greatly improving the operation efficiency, avoiding the situation of low efficiency caused by the traditional method of slowly lowering the probe to avoid impacts.

[0029] Example 2: In this example, refer to Figure 2 , Figure 3 and Figure 4As shown, specifically, the lower outer wall of the first protective cylinder 4 is fixed with a first support ring 43, located inside the second protective cylinder 5, to facilitate the sliding of the first protective cylinder 4 inside the second protective cylinder 5. The lower outer wall of the second protective cylinder 5 is fixed with a second support ring 51, located inside the third protective cylinder 6, to facilitate the sliding of the second protective cylinder 5 inside the third protective cylinder 6. The lower outer wall of the third protective cylinder 6 is fixed with a third support ring 62. The support rings are made of polyurethane, which can effectively resist external impacts. At the same time, after the protective cylinder shrinks, the three support rings can be flat to form a support surface. The elastic ring 61 is fixedly connected to the outer wall of the third support ring 62. The first support ring 43, the second support ring 51 and the third support ring 62 are all made of elastic material to buffer the impact of external impacts on the detection probe 7 and ensure the stability of the protective cylinder's expansion and contraction. The length of the first protective cylinder 4 is greater than that of the second protective cylinder 5, and the length of the second protective cylinder 5 is greater than that of the third protective cylinder 6, forming a stepped contraction structure.

[0030] Specifically, by setting up a three-layer telescopic protective cylinder, when the probe is lowered to detect the thickness of the pile foundation sediment, the third support ring 62 of the third protective cylinder 6 first contacts the sediment surface, followed by the second support ring 51 of the second protective cylinder 5, and then the first support ring 43 of the first protective cylinder 4. The three support rings are flush with each other in the folded state of the protective cylinder to form a radial support surface, which allows the probe to move vertically inside the protective cylinder to contact the sediment for detection. At the same time, the external support prevents the probe from tilting or tipping over, thus improving the detection accuracy.

[0031] Example 3: In this example, refer to Figure 4 , Figure 5 and Figure 6 As shown, specifically, a guide ring 41 is fixed in the middle of the top surface of the first protective cylinder 4, and the take-up and release line 3 passes through the guide ring 41. The inner wall of the guide ring 41 is provided with a connecting groove 411, and a second pulley 413 is movably connected to the connecting groove 411 through a second shaft 412, which is used to reduce the frictional resistance of the take-up and release line 3, so that the take-up and release line 3 can move smoothly inside the protective cylinder. A support rod 44 is fixed to the lower inner wall of the first protective cylinder 4, and the end of the support rod 44 is provided with a rotating groove 441. The rotating groove 441 is connected to the inner side of the second shaft 412. A shaft 442 is movably connected to a first pulley 443, which abuts against the outer wall of the detection probe 7 to assist its vertical movement. Four sets of connecting grooves 411 and second pulleys 413 are symmetrically arranged, and four sets of support rods 44 and first pulleys 443 are symmetrically arranged to form a uniform force structure. Specifically, the four sets of symmetrically arranged first pulleys 443 and second pulleys 413 form a double guide channel to ensure that the force on the take-up and release line 3 and the probe is uniform, improve the verticality of the probe's lowering, and ensure smooth probe movement.

[0032] Working Principle: When using the pile foundation sediment thickness testing instrument for sediment detection, the operator moves the main unit 1 of the instrument to one side or above the pile foundation (with a top grid). Then, the operator takes out the detection probe 7 and the retraction line 3 from the inside of the placement bag 2 and lowers the detection probe 7 to the inside of the pile foundation. During the lowering process, the first protective cylinder 4, the second protective cylinder 5, and the third protective cylinder 6 on the outside of the detection probe 7 unfold layer by layer, protecting the outside of the detection probe 7 and effectively resisting external impacts. This allows the operator to quickly lower the probe, improving operational efficiency. When the probe contacts the sediment surface, the three protective cylinders fold and retract. The support ring at the bottom of each protective cylinder can stably support the sediment surface, preventing the probe from tilting when touching the bottom. At the same time, the probe can be guided vertically by multiple sets of pulleys inside the protective cylinders to achieve vertical contact with the sediment, improving detection accuracy. After the subsequent detection is completed, the probe can be quickly retracted through the protection of the protective cylinders. The operation is convenient and highly practical.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the thickness of sediment in pile foundations for marine engineering, comprising a main unit of the detector, a mounting bag, a launching and retrieving cable, and a detection probe, characterized in that: The detector host has pockets fixed on both sides, and a detection probe is fixedly connected to one side of the detector host via a take-up and put-out cable. The pockets are used to store the detection probe. The upper outer side of the detection probe is sequentially fitted with a first protective cylinder, a second protective cylinder, and a third protective cylinder to form a multi-layer retractable protective structure. The second protective cylinder is slidably connected to the first protective cylinder via a first slider on the upper inner wall and a first groove on the outer wall of the first protective cylinder; the third protective cylinder is slidably connected to the second protective cylinder via a second slider on the upper inner wall and a second groove on the outer wall of the second protective cylinder. An elastic ring is fixed to the lower outer side of the third protective cylinder to buffer external impacts.

2. The device for detecting the thickness of sediment in marine engineering pile foundations according to claim 1, characterized in that: A guide ring is fixed in the middle of the top surface of the first protective cylinder, and the take-up and release lines pass through the guide ring; The inner wall of the guide ring is provided with a connecting groove, and a second pulley is movably connected to the connecting groove through a second shaft to reduce the frictional resistance of the wire winding and unwinding.

3. The device for detecting the thickness of sediment in marine engineering pile foundations according to claim 2, characterized in that: A first support ring is fixed to the lower outer wall of the first protective cylinder, a second support ring is fixed to the lower outer wall of the second protective cylinder, and a third support ring is fixed to the lower outer wall of the third protective cylinder. The elastic ring is fixedly connected to the outer wall of the third support ring.

4. The device for detecting the thickness of sediment in marine engineering pile foundations according to claim 3, characterized in that: The length of the first protective cylinder is greater than that of the second protective cylinder, and the length of the second protective cylinder is greater than that of the third protective cylinder, forming a stepped shrinkage structure.

5. The device for detecting the thickness of sediment in marine engineering pile foundations according to claim 4, characterized in that: A support rod is fixed to the lower inner wall of the first protective cylinder. The end of the support rod is provided with a rotating groove. The rotating groove is movably connected to a first pulley through an inner first shaft. The first pulley abuts against the outer wall of the detection probe to assist its vertical movement.

6. The device for detecting the thickness of sediment in marine engineering pile foundations according to claim 5, characterized in that: The first, second, and third support rings are all made of elastic material to buffer the impact of external shocks on the detection probe and ensure the stability of the protective cylinder's extension and retraction.

7. The device for detecting the thickness of sediment in marine engineering pile foundations according to claim 6, characterized in that: The first slide groove and the first slider are symmetrically arranged in four sets, and the second slide groove and the second slider are symmetrically arranged in four sets to ensure the stability of the protective cylinder's extension and retraction.

8. The device for detecting the thickness of sediment in marine engineering pile foundations according to claim 7, characterized in that: The connecting grooves are symmetrically arranged in four sets with the second pulley, and the support rods are symmetrically arranged in four sets with the first pulley, forming a uniformly stressed structure.

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